summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/lpfc/lpfc_sli.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/scsi/lpfc/lpfc_sli.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_sli.c22656
1 files changed, 22656 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
new file mode 100644
index 000000000..427a6ac80
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -0,0 +1,22656 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for *
+ * Fibre Channel Host Bus Adapters. *
+ * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term *
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
+ * Copyright (C) 2004-2016 Emulex. All rights reserved. *
+ * EMULEX and SLI are trademarks of Emulex. *
+ * www.broadcom.com *
+ * Portions Copyright (C) 2004-2005 Christoph Hellwig *
+ * *
+ * This program is free software; you can redistribute it and/or *
+ * modify it under the terms of version 2 of the GNU General *
+ * Public License as published by the Free Software Foundation. *
+ * This program is distributed in the hope that it will be useful. *
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
+ * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
+ * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
+ * TO BE LEGALLY INVALID. See the GNU General Public License for *
+ * more details, a copy of which can be found in the file COPYING *
+ * included with this package. *
+ *******************************************************************/
+
+#include <linux/blkdev.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/lockdep.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_transport_fc.h>
+#include <scsi/fc/fc_fs.h>
+#include <linux/aer.h>
+#include <linux/crash_dump.h>
+#ifdef CONFIG_X86
+#include <asm/set_memory.h>
+#endif
+
+#include "lpfc_hw4.h"
+#include "lpfc_hw.h"
+#include "lpfc_sli.h"
+#include "lpfc_sli4.h"
+#include "lpfc_nl.h"
+#include "lpfc_disc.h"
+#include "lpfc.h"
+#include "lpfc_scsi.h"
+#include "lpfc_nvme.h"
+#include "lpfc_crtn.h"
+#include "lpfc_logmsg.h"
+#include "lpfc_compat.h"
+#include "lpfc_debugfs.h"
+#include "lpfc_vport.h"
+#include "lpfc_version.h"
+
+/* There are only four IOCB completion types. */
+typedef enum _lpfc_iocb_type {
+ LPFC_UNKNOWN_IOCB,
+ LPFC_UNSOL_IOCB,
+ LPFC_SOL_IOCB,
+ LPFC_ABORT_IOCB
+} lpfc_iocb_type;
+
+
+/* Provide function prototypes local to this module. */
+static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *,
+ uint32_t);
+static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *,
+ uint8_t *, uint32_t *);
+static struct lpfc_iocbq *
+lpfc_sli4_els_preprocess_rspiocbq(struct lpfc_hba *phba,
+ struct lpfc_iocbq *rspiocbq);
+static void lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *,
+ struct hbq_dmabuf *);
+static void lpfc_sli4_handle_mds_loopback(struct lpfc_vport *vport,
+ struct hbq_dmabuf *dmabuf);
+static bool lpfc_sli4_fp_handle_cqe(struct lpfc_hba *phba,
+ struct lpfc_queue *cq, struct lpfc_cqe *cqe);
+static int lpfc_sli4_post_sgl_list(struct lpfc_hba *, struct list_head *,
+ int);
+static void lpfc_sli4_hba_handle_eqe(struct lpfc_hba *phba,
+ struct lpfc_queue *eq,
+ struct lpfc_eqe *eqe);
+static bool lpfc_sli4_mbox_completions_pending(struct lpfc_hba *phba);
+static bool lpfc_sli4_process_missed_mbox_completions(struct lpfc_hba *phba);
+static struct lpfc_cqe *lpfc_sli4_cq_get(struct lpfc_queue *q);
+static void __lpfc_sli4_consume_cqe(struct lpfc_hba *phba,
+ struct lpfc_queue *cq,
+ struct lpfc_cqe *cqe);
+static uint16_t lpfc_wqe_bpl2sgl(struct lpfc_hba *phba,
+ struct lpfc_iocbq *pwqeq,
+ struct lpfc_sglq *sglq);
+
+union lpfc_wqe128 lpfc_iread_cmd_template;
+union lpfc_wqe128 lpfc_iwrite_cmd_template;
+union lpfc_wqe128 lpfc_icmnd_cmd_template;
+
+/* Setup WQE templates for IOs */
+void lpfc_wqe_cmd_template(void)
+{
+ union lpfc_wqe128 *wqe;
+
+ /* IREAD template */
+ wqe = &lpfc_iread_cmd_template;
+ memset(wqe, 0, sizeof(union lpfc_wqe128));
+
+ /* Word 0, 1, 2 - BDE is variable */
+
+ /* Word 3 - cmd_buff_len, payload_offset_len is zero */
+
+ /* Word 4 - total_xfer_len is variable */
+
+ /* Word 5 - is zero */
+
+ /* Word 6 - ctxt_tag, xri_tag is variable */
+
+ /* Word 7 */
+ bf_set(wqe_cmnd, &wqe->fcp_iread.wqe_com, CMD_FCP_IREAD64_WQE);
+ bf_set(wqe_pu, &wqe->fcp_iread.wqe_com, PARM_READ_CHECK);
+ bf_set(wqe_class, &wqe->fcp_iread.wqe_com, CLASS3);
+ bf_set(wqe_ct, &wqe->fcp_iread.wqe_com, SLI4_CT_RPI);
+
+ /* Word 8 - abort_tag is variable */
+
+ /* Word 9 - reqtag is variable */
+
+ /* Word 10 - dbde, wqes is variable */
+ bf_set(wqe_qosd, &wqe->fcp_iread.wqe_com, 0);
+ bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, LPFC_WQE_IOD_READ);
+ bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com, LPFC_WQE_LENLOC_WORD4);
+ bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 0);
+ bf_set(wqe_wqes, &wqe->fcp_iread.wqe_com, 1);
+
+ /* Word 11 - pbde is variable */
+ bf_set(wqe_cmd_type, &wqe->fcp_iread.wqe_com, COMMAND_DATA_IN);
+ bf_set(wqe_cqid, &wqe->fcp_iread.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_pbde, &wqe->fcp_iread.wqe_com, 0);
+
+ /* Word 12 - is zero */
+
+ /* Word 13, 14, 15 - PBDE is variable */
+
+ /* IWRITE template */
+ wqe = &lpfc_iwrite_cmd_template;
+ memset(wqe, 0, sizeof(union lpfc_wqe128));
+
+ /* Word 0, 1, 2 - BDE is variable */
+
+ /* Word 3 - cmd_buff_len, payload_offset_len is zero */
+
+ /* Word 4 - total_xfer_len is variable */
+
+ /* Word 5 - initial_xfer_len is variable */
+
+ /* Word 6 - ctxt_tag, xri_tag is variable */
+
+ /* Word 7 */
+ bf_set(wqe_cmnd, &wqe->fcp_iwrite.wqe_com, CMD_FCP_IWRITE64_WQE);
+ bf_set(wqe_pu, &wqe->fcp_iwrite.wqe_com, PARM_READ_CHECK);
+ bf_set(wqe_class, &wqe->fcp_iwrite.wqe_com, CLASS3);
+ bf_set(wqe_ct, &wqe->fcp_iwrite.wqe_com, SLI4_CT_RPI);
+
+ /* Word 8 - abort_tag is variable */
+
+ /* Word 9 - reqtag is variable */
+
+ /* Word 10 - dbde, wqes is variable */
+ bf_set(wqe_qosd, &wqe->fcp_iwrite.wqe_com, 0);
+ bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_IOD_WRITE);
+ bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_LENLOC_WORD4);
+ bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0);
+ bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
+
+ /* Word 11 - pbde is variable */
+ bf_set(wqe_cmd_type, &wqe->fcp_iwrite.wqe_com, COMMAND_DATA_OUT);
+ bf_set(wqe_cqid, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_pbde, &wqe->fcp_iwrite.wqe_com, 0);
+
+ /* Word 12 - is zero */
+
+ /* Word 13, 14, 15 - PBDE is variable */
+
+ /* ICMND template */
+ wqe = &lpfc_icmnd_cmd_template;
+ memset(wqe, 0, sizeof(union lpfc_wqe128));
+
+ /* Word 0, 1, 2 - BDE is variable */
+
+ /* Word 3 - payload_offset_len is variable */
+
+ /* Word 4, 5 - is zero */
+
+ /* Word 6 - ctxt_tag, xri_tag is variable */
+
+ /* Word 7 */
+ bf_set(wqe_cmnd, &wqe->fcp_icmd.wqe_com, CMD_FCP_ICMND64_WQE);
+ bf_set(wqe_pu, &wqe->fcp_icmd.wqe_com, 0);
+ bf_set(wqe_class, &wqe->fcp_icmd.wqe_com, CLASS3);
+ bf_set(wqe_ct, &wqe->fcp_icmd.wqe_com, SLI4_CT_RPI);
+
+ /* Word 8 - abort_tag is variable */
+
+ /* Word 9 - reqtag is variable */
+
+ /* Word 10 - dbde, wqes is variable */
+ bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1);
+ bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_NONE);
+ bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com, LPFC_WQE_LENLOC_NONE);
+ bf_set(wqe_dbde, &wqe->fcp_icmd.wqe_com, 0);
+ bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1);
+
+ /* Word 11 */
+ bf_set(wqe_cmd_type, &wqe->fcp_icmd.wqe_com, COMMAND_DATA_IN);
+ bf_set(wqe_cqid, &wqe->fcp_icmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_pbde, &wqe->fcp_icmd.wqe_com, 0);
+
+ /* Word 12, 13, 14, 15 - is zero */
+}
+
+#if defined(CONFIG_64BIT) && defined(__LITTLE_ENDIAN)
+/**
+ * lpfc_sli4_pcimem_bcopy - SLI4 memory copy function
+ * @srcp: Source memory pointer.
+ * @destp: Destination memory pointer.
+ * @cnt: Number of words required to be copied.
+ * Must be a multiple of sizeof(uint64_t)
+ *
+ * This function is used for copying data between driver memory
+ * and the SLI WQ. This function also changes the endianness
+ * of each word if native endianness is different from SLI
+ * endianness. This function can be called with or without
+ * lock.
+ **/
+static void
+lpfc_sli4_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
+{
+ uint64_t *src = srcp;
+ uint64_t *dest = destp;
+ int i;
+
+ for (i = 0; i < (int)cnt; i += sizeof(uint64_t))
+ *dest++ = *src++;
+}
+#else
+#define lpfc_sli4_pcimem_bcopy(a, b, c) lpfc_sli_pcimem_bcopy(a, b, c)
+#endif
+
+/**
+ * lpfc_sli4_wq_put - Put a Work Queue Entry on an Work Queue
+ * @q: The Work Queue to operate on.
+ * @wqe: The work Queue Entry to put on the Work queue.
+ *
+ * This routine will copy the contents of @wqe to the next available entry on
+ * the @q. This function will then ring the Work Queue Doorbell to signal the
+ * HBA to start processing the Work Queue Entry. This function returns 0 if
+ * successful. If no entries are available on @q then this function will return
+ * -ENOMEM.
+ * The caller is expected to hold the hbalock when calling this routine.
+ **/
+static int
+lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe128 *wqe)
+{
+ union lpfc_wqe *temp_wqe;
+ struct lpfc_register doorbell;
+ uint32_t host_index;
+ uint32_t idx;
+ uint32_t i = 0;
+ uint8_t *tmp;
+ u32 if_type;
+
+ /* sanity check on queue memory */
+ if (unlikely(!q))
+ return -ENOMEM;
+
+ temp_wqe = lpfc_sli4_qe(q, q->host_index);
+
+ /* If the host has not yet processed the next entry then we are done */
+ idx = ((q->host_index + 1) % q->entry_count);
+ if (idx == q->hba_index) {
+ q->WQ_overflow++;
+ return -EBUSY;
+ }
+ q->WQ_posted++;
+ /* set consumption flag every once in a while */
+ if (!((q->host_index + 1) % q->notify_interval))
+ bf_set(wqe_wqec, &wqe->generic.wqe_com, 1);
+ else
+ bf_set(wqe_wqec, &wqe->generic.wqe_com, 0);
+ if (q->phba->sli3_options & LPFC_SLI4_PHWQ_ENABLED)
+ bf_set(wqe_wqid, &wqe->generic.wqe_com, q->queue_id);
+ lpfc_sli4_pcimem_bcopy(wqe, temp_wqe, q->entry_size);
+ if (q->dpp_enable && q->phba->cfg_enable_dpp) {
+ /* write to DPP aperture taking advatage of Combined Writes */
+ tmp = (uint8_t *)temp_wqe;
+#ifdef __raw_writeq
+ for (i = 0; i < q->entry_size; i += sizeof(uint64_t))
+ __raw_writeq(*((uint64_t *)(tmp + i)),
+ q->dpp_regaddr + i);
+#else
+ for (i = 0; i < q->entry_size; i += sizeof(uint32_t))
+ __raw_writel(*((uint32_t *)(tmp + i)),
+ q->dpp_regaddr + i);
+#endif
+ }
+ /* ensure WQE bcopy and DPP flushed before doorbell write */
+ wmb();
+
+ /* Update the host index before invoking device */
+ host_index = q->host_index;
+
+ q->host_index = idx;
+
+ /* Ring Doorbell */
+ doorbell.word0 = 0;
+ if (q->db_format == LPFC_DB_LIST_FORMAT) {
+ if (q->dpp_enable && q->phba->cfg_enable_dpp) {
+ bf_set(lpfc_if6_wq_db_list_fm_num_posted, &doorbell, 1);
+ bf_set(lpfc_if6_wq_db_list_fm_dpp, &doorbell, 1);
+ bf_set(lpfc_if6_wq_db_list_fm_dpp_id, &doorbell,
+ q->dpp_id);
+ bf_set(lpfc_if6_wq_db_list_fm_id, &doorbell,
+ q->queue_id);
+ } else {
+ bf_set(lpfc_wq_db_list_fm_num_posted, &doorbell, 1);
+ bf_set(lpfc_wq_db_list_fm_id, &doorbell, q->queue_id);
+
+ /* Leave bits <23:16> clear for if_type 6 dpp */
+ if_type = bf_get(lpfc_sli_intf_if_type,
+ &q->phba->sli4_hba.sli_intf);
+ if (if_type != LPFC_SLI_INTF_IF_TYPE_6)
+ bf_set(lpfc_wq_db_list_fm_index, &doorbell,
+ host_index);
+ }
+ } else if (q->db_format == LPFC_DB_RING_FORMAT) {
+ bf_set(lpfc_wq_db_ring_fm_num_posted, &doorbell, 1);
+ bf_set(lpfc_wq_db_ring_fm_id, &doorbell, q->queue_id);
+ } else {
+ return -EINVAL;
+ }
+ writel(doorbell.word0, q->db_regaddr);
+
+ return 0;
+}
+
+/**
+ * lpfc_sli4_wq_release - Updates internal hba index for WQ
+ * @q: The Work Queue to operate on.
+ * @index: The index to advance the hba index to.
+ *
+ * This routine will update the HBA index of a queue to reflect consumption of
+ * Work Queue Entries by the HBA. When the HBA indicates that it has consumed
+ * an entry the host calls this function to update the queue's internal
+ * pointers.
+ **/
+static void
+lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index)
+{
+ /* sanity check on queue memory */
+ if (unlikely(!q))
+ return;
+
+ q->hba_index = index;
+}
+
+/**
+ * lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue
+ * @q: The Mailbox Queue to operate on.
+ * @mqe: The Mailbox Queue Entry to put on the Work queue.
+ *
+ * This routine will copy the contents of @mqe to the next available entry on
+ * the @q. This function will then ring the Work Queue Doorbell to signal the
+ * HBA to start processing the Work Queue Entry. This function returns 0 if
+ * successful. If no entries are available on @q then this function will return
+ * -ENOMEM.
+ * The caller is expected to hold the hbalock when calling this routine.
+ **/
+static uint32_t
+lpfc_sli4_mq_put(struct lpfc_queue *q, struct lpfc_mqe *mqe)
+{
+ struct lpfc_mqe *temp_mqe;
+ struct lpfc_register doorbell;
+
+ /* sanity check on queue memory */
+ if (unlikely(!q))
+ return -ENOMEM;
+ temp_mqe = lpfc_sli4_qe(q, q->host_index);
+
+ /* If the host has not yet processed the next entry then we are done */
+ if (((q->host_index + 1) % q->entry_count) == q->hba_index)
+ return -ENOMEM;
+ lpfc_sli4_pcimem_bcopy(mqe, temp_mqe, q->entry_size);
+ /* Save off the mailbox pointer for completion */
+ q->phba->mbox = (MAILBOX_t *)temp_mqe;
+
+ /* Update the host index before invoking device */
+ q->host_index = ((q->host_index + 1) % q->entry_count);
+
+ /* Ring Doorbell */
+ doorbell.word0 = 0;
+ bf_set(lpfc_mq_doorbell_num_posted, &doorbell, 1);
+ bf_set(lpfc_mq_doorbell_id, &doorbell, q->queue_id);
+ writel(doorbell.word0, q->phba->sli4_hba.MQDBregaddr);
+ return 0;
+}
+
+/**
+ * lpfc_sli4_mq_release - Updates internal hba index for MQ
+ * @q: The Mailbox Queue to operate on.
+ *
+ * This routine will update the HBA index of a queue to reflect consumption of
+ * a Mailbox Queue Entry by the HBA. When the HBA indicates that it has consumed
+ * an entry the host calls this function to update the queue's internal
+ * pointers. This routine returns the number of entries that were consumed by
+ * the HBA.
+ **/
+static uint32_t
+lpfc_sli4_mq_release(struct lpfc_queue *q)
+{
+ /* sanity check on queue memory */
+ if (unlikely(!q))
+ return 0;
+
+ /* Clear the mailbox pointer for completion */
+ q->phba->mbox = NULL;
+ q->hba_index = ((q->hba_index + 1) % q->entry_count);
+ return 1;
+}
+
+/**
+ * lpfc_sli4_eq_get - Gets the next valid EQE from a EQ
+ * @q: The Event Queue to get the first valid EQE from
+ *
+ * This routine will get the first valid Event Queue Entry from @q, update
+ * the queue's internal hba index, and return the EQE. If no valid EQEs are in
+ * the Queue (no more work to do), or the Queue is full of EQEs that have been
+ * processed, but not popped back to the HBA then this routine will return NULL.
+ **/
+static struct lpfc_eqe *
+lpfc_sli4_eq_get(struct lpfc_queue *q)
+{
+ struct lpfc_eqe *eqe;
+
+ /* sanity check on queue memory */
+ if (unlikely(!q))
+ return NULL;
+ eqe = lpfc_sli4_qe(q, q->host_index);
+
+ /* If the next EQE is not valid then we are done */
+ if (bf_get_le32(lpfc_eqe_valid, eqe) != q->qe_valid)
+ return NULL;
+
+ /*
+ * insert barrier for instruction interlock : data from the hardware
+ * must have the valid bit checked before it can be copied and acted
+ * upon. Speculative instructions were allowing a bcopy at the start
+ * of lpfc_sli4_fp_handle_wcqe(), which is called immediately
+ * after our return, to copy data before the valid bit check above
+ * was done. As such, some of the copied data was stale. The barrier
+ * ensures the check is before any data is copied.
+ */
+ mb();
+ return eqe;
+}
+
+/**
+ * lpfc_sli4_eq_clr_intr - Turn off interrupts from this EQ
+ * @q: The Event Queue to disable interrupts
+ *
+ **/
+void
+lpfc_sli4_eq_clr_intr(struct lpfc_queue *q)
+{
+ struct lpfc_register doorbell;
+
+ doorbell.word0 = 0;
+ bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
+ bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
+ bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell,
+ (q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT));
+ bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id);
+ writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
+}
+
+/**
+ * lpfc_sli4_if6_eq_clr_intr - Turn off interrupts from this EQ
+ * @q: The Event Queue to disable interrupts
+ *
+ **/
+void
+lpfc_sli4_if6_eq_clr_intr(struct lpfc_queue *q)
+{
+ struct lpfc_register doorbell;
+
+ doorbell.word0 = 0;
+ bf_set(lpfc_if6_eq_doorbell_eqid, &doorbell, q->queue_id);
+ writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
+}
+
+/**
+ * lpfc_sli4_write_eq_db - write EQ DB for eqe's consumed or arm state
+ * @phba: adapter with EQ
+ * @q: The Event Queue that the host has completed processing for.
+ * @count: Number of elements that have been consumed
+ * @arm: Indicates whether the host wants to arms this CQ.
+ *
+ * This routine will notify the HBA, by ringing the doorbell, that count
+ * number of EQEs have been processed. The @arm parameter indicates whether
+ * the queue should be rearmed when ringing the doorbell.
+ **/
+void
+lpfc_sli4_write_eq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
+ uint32_t count, bool arm)
+{
+ struct lpfc_register doorbell;
+
+ /* sanity check on queue memory */
+ if (unlikely(!q || (count == 0 && !arm)))
+ return;
+
+ /* ring doorbell for number popped */
+ doorbell.word0 = 0;
+ if (arm) {
+ bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
+ bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
+ }
+ bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, count);
+ bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
+ bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell,
+ (q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT));
+ bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id);
+ writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
+ /* PCI read to flush PCI pipeline on re-arming for INTx mode */
+ if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM))
+ readl(q->phba->sli4_hba.EQDBregaddr);
+}
+
+/**
+ * lpfc_sli4_if6_write_eq_db - write EQ DB for eqe's consumed or arm state
+ * @phba: adapter with EQ
+ * @q: The Event Queue that the host has completed processing for.
+ * @count: Number of elements that have been consumed
+ * @arm: Indicates whether the host wants to arms this CQ.
+ *
+ * This routine will notify the HBA, by ringing the doorbell, that count
+ * number of EQEs have been processed. The @arm parameter indicates whether
+ * the queue should be rearmed when ringing the doorbell.
+ **/
+void
+lpfc_sli4_if6_write_eq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
+ uint32_t count, bool arm)
+{
+ struct lpfc_register doorbell;
+
+ /* sanity check on queue memory */
+ if (unlikely(!q || (count == 0 && !arm)))
+ return;
+
+ /* ring doorbell for number popped */
+ doorbell.word0 = 0;
+ if (arm)
+ bf_set(lpfc_if6_eq_doorbell_arm, &doorbell, 1);
+ bf_set(lpfc_if6_eq_doorbell_num_released, &doorbell, count);
+ bf_set(lpfc_if6_eq_doorbell_eqid, &doorbell, q->queue_id);
+ writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
+ /* PCI read to flush PCI pipeline on re-arming for INTx mode */
+ if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM))
+ readl(q->phba->sli4_hba.EQDBregaddr);
+}
+
+static void
+__lpfc_sli4_consume_eqe(struct lpfc_hba *phba, struct lpfc_queue *eq,
+ struct lpfc_eqe *eqe)
+{
+ if (!phba->sli4_hba.pc_sli4_params.eqav)
+ bf_set_le32(lpfc_eqe_valid, eqe, 0);
+
+ eq->host_index = ((eq->host_index + 1) % eq->entry_count);
+
+ /* if the index wrapped around, toggle the valid bit */
+ if (phba->sli4_hba.pc_sli4_params.eqav && !eq->host_index)
+ eq->qe_valid = (eq->qe_valid) ? 0 : 1;
+}
+
+static void
+lpfc_sli4_eqcq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq)
+{
+ struct lpfc_eqe *eqe = NULL;
+ u32 eq_count = 0, cq_count = 0;
+ struct lpfc_cqe *cqe = NULL;
+ struct lpfc_queue *cq = NULL, *childq = NULL;
+ int cqid = 0;
+
+ /* walk all the EQ entries and drop on the floor */
+ eqe = lpfc_sli4_eq_get(eq);
+ while (eqe) {
+ /* Get the reference to the corresponding CQ */
+ cqid = bf_get_le32(lpfc_eqe_resource_id, eqe);
+ cq = NULL;
+
+ list_for_each_entry(childq, &eq->child_list, list) {
+ if (childq->queue_id == cqid) {
+ cq = childq;
+ break;
+ }
+ }
+ /* If CQ is valid, iterate through it and drop all the CQEs */
+ if (cq) {
+ cqe = lpfc_sli4_cq_get(cq);
+ while (cqe) {
+ __lpfc_sli4_consume_cqe(phba, cq, cqe);
+ cq_count++;
+ cqe = lpfc_sli4_cq_get(cq);
+ }
+ /* Clear and re-arm the CQ */
+ phba->sli4_hba.sli4_write_cq_db(phba, cq, cq_count,
+ LPFC_QUEUE_REARM);
+ cq_count = 0;
+ }
+ __lpfc_sli4_consume_eqe(phba, eq, eqe);
+ eq_count++;
+ eqe = lpfc_sli4_eq_get(eq);
+ }
+
+ /* Clear and re-arm the EQ */
+ phba->sli4_hba.sli4_write_eq_db(phba, eq, eq_count, LPFC_QUEUE_REARM);
+}
+
+static int
+lpfc_sli4_process_eq(struct lpfc_hba *phba, struct lpfc_queue *eq,
+ uint8_t rearm)
+{
+ struct lpfc_eqe *eqe;
+ int count = 0, consumed = 0;
+
+ if (cmpxchg(&eq->queue_claimed, 0, 1) != 0)
+ goto rearm_and_exit;
+
+ eqe = lpfc_sli4_eq_get(eq);
+ while (eqe) {
+ lpfc_sli4_hba_handle_eqe(phba, eq, eqe);
+ __lpfc_sli4_consume_eqe(phba, eq, eqe);
+
+ consumed++;
+ if (!(++count % eq->max_proc_limit))
+ break;
+
+ if (!(count % eq->notify_interval)) {
+ phba->sli4_hba.sli4_write_eq_db(phba, eq, consumed,
+ LPFC_QUEUE_NOARM);
+ consumed = 0;
+ }
+
+ eqe = lpfc_sli4_eq_get(eq);
+ }
+ eq->EQ_processed += count;
+
+ /* Track the max number of EQEs processed in 1 intr */
+ if (count > eq->EQ_max_eqe)
+ eq->EQ_max_eqe = count;
+
+ xchg(&eq->queue_claimed, 0);
+
+rearm_and_exit:
+ /* Always clear the EQ. */
+ phba->sli4_hba.sli4_write_eq_db(phba, eq, consumed, rearm);
+
+ return count;
+}
+
+/**
+ * lpfc_sli4_cq_get - Gets the next valid CQE from a CQ
+ * @q: The Completion Queue to get the first valid CQE from
+ *
+ * This routine will get the first valid Completion Queue Entry from @q, update
+ * the queue's internal hba index, and return the CQE. If no valid CQEs are in
+ * the Queue (no more work to do), or the Queue is full of CQEs that have been
+ * processed, but not popped back to the HBA then this routine will return NULL.
+ **/
+static struct lpfc_cqe *
+lpfc_sli4_cq_get(struct lpfc_queue *q)
+{
+ struct lpfc_cqe *cqe;
+
+ /* sanity check on queue memory */
+ if (unlikely(!q))
+ return NULL;
+ cqe = lpfc_sli4_qe(q, q->host_index);
+
+ /* If the next CQE is not valid then we are done */
+ if (bf_get_le32(lpfc_cqe_valid, cqe) != q->qe_valid)
+ return NULL;
+
+ /*
+ * insert barrier for instruction interlock : data from the hardware
+ * must have the valid bit checked before it can be copied and acted
+ * upon. Given what was seen in lpfc_sli4_cq_get() of speculative
+ * instructions allowing action on content before valid bit checked,
+ * add barrier here as well. May not be needed as "content" is a
+ * single 32-bit entity here (vs multi word structure for cq's).
+ */
+ mb();
+ return cqe;
+}
+
+static void
+__lpfc_sli4_consume_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ struct lpfc_cqe *cqe)
+{
+ if (!phba->sli4_hba.pc_sli4_params.cqav)
+ bf_set_le32(lpfc_cqe_valid, cqe, 0);
+
+ cq->host_index = ((cq->host_index + 1) % cq->entry_count);
+
+ /* if the index wrapped around, toggle the valid bit */
+ if (phba->sli4_hba.pc_sli4_params.cqav && !cq->host_index)
+ cq->qe_valid = (cq->qe_valid) ? 0 : 1;
+}
+
+/**
+ * lpfc_sli4_write_cq_db - write cq DB for entries consumed or arm state.
+ * @phba: the adapter with the CQ
+ * @q: The Completion Queue that the host has completed processing for.
+ * @count: the number of elements that were consumed
+ * @arm: Indicates whether the host wants to arms this CQ.
+ *
+ * This routine will notify the HBA, by ringing the doorbell, that the
+ * CQEs have been processed. The @arm parameter specifies whether the
+ * queue should be rearmed when ringing the doorbell.
+ **/
+void
+lpfc_sli4_write_cq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
+ uint32_t count, bool arm)
+{
+ struct lpfc_register doorbell;
+
+ /* sanity check on queue memory */
+ if (unlikely(!q || (count == 0 && !arm)))
+ return;
+
+ /* ring doorbell for number popped */
+ doorbell.word0 = 0;
+ if (arm)
+ bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
+ bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, count);
+ bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION);
+ bf_set(lpfc_eqcq_doorbell_cqid_hi, &doorbell,
+ (q->queue_id >> LPFC_CQID_HI_FIELD_SHIFT));
+ bf_set(lpfc_eqcq_doorbell_cqid_lo, &doorbell, q->queue_id);
+ writel(doorbell.word0, q->phba->sli4_hba.CQDBregaddr);
+}
+
+/**
+ * lpfc_sli4_if6_write_cq_db - write cq DB for entries consumed or arm state.
+ * @phba: the adapter with the CQ
+ * @q: The Completion Queue that the host has completed processing for.
+ * @count: the number of elements that were consumed
+ * @arm: Indicates whether the host wants to arms this CQ.
+ *
+ * This routine will notify the HBA, by ringing the doorbell, that the
+ * CQEs have been processed. The @arm parameter specifies whether the
+ * queue should be rearmed when ringing the doorbell.
+ **/
+void
+lpfc_sli4_if6_write_cq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
+ uint32_t count, bool arm)
+{
+ struct lpfc_register doorbell;
+
+ /* sanity check on queue memory */
+ if (unlikely(!q || (count == 0 && !arm)))
+ return;
+
+ /* ring doorbell for number popped */
+ doorbell.word0 = 0;
+ if (arm)
+ bf_set(lpfc_if6_cq_doorbell_arm, &doorbell, 1);
+ bf_set(lpfc_if6_cq_doorbell_num_released, &doorbell, count);
+ bf_set(lpfc_if6_cq_doorbell_cqid, &doorbell, q->queue_id);
+ writel(doorbell.word0, q->phba->sli4_hba.CQDBregaddr);
+}
+
+/*
+ * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue
+ *
+ * This routine will copy the contents of @wqe to the next available entry on
+ * the @q. This function will then ring the Receive Queue Doorbell to signal the
+ * HBA to start processing the Receive Queue Entry. This function returns the
+ * index that the rqe was copied to if successful. If no entries are available
+ * on @q then this function will return -ENOMEM.
+ * The caller is expected to hold the hbalock when calling this routine.
+ **/
+int
+lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq,
+ struct lpfc_rqe *hrqe, struct lpfc_rqe *drqe)
+{
+ struct lpfc_rqe *temp_hrqe;
+ struct lpfc_rqe *temp_drqe;
+ struct lpfc_register doorbell;
+ int hq_put_index;
+ int dq_put_index;
+
+ /* sanity check on queue memory */
+ if (unlikely(!hq) || unlikely(!dq))
+ return -ENOMEM;
+ hq_put_index = hq->host_index;
+ dq_put_index = dq->host_index;
+ temp_hrqe = lpfc_sli4_qe(hq, hq_put_index);
+ temp_drqe = lpfc_sli4_qe(dq, dq_put_index);
+
+ if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ)
+ return -EINVAL;
+ if (hq_put_index != dq_put_index)
+ return -EINVAL;
+ /* If the host has not yet processed the next entry then we are done */
+ if (((hq_put_index + 1) % hq->entry_count) == hq->hba_index)
+ return -EBUSY;
+ lpfc_sli4_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size);
+ lpfc_sli4_pcimem_bcopy(drqe, temp_drqe, dq->entry_size);
+
+ /* Update the host index to point to the next slot */
+ hq->host_index = ((hq_put_index + 1) % hq->entry_count);
+ dq->host_index = ((dq_put_index + 1) % dq->entry_count);
+ hq->RQ_buf_posted++;
+
+ /* Ring The Header Receive Queue Doorbell */
+ if (!(hq->host_index % hq->notify_interval)) {
+ doorbell.word0 = 0;
+ if (hq->db_format == LPFC_DB_RING_FORMAT) {
+ bf_set(lpfc_rq_db_ring_fm_num_posted, &doorbell,
+ hq->notify_interval);
+ bf_set(lpfc_rq_db_ring_fm_id, &doorbell, hq->queue_id);
+ } else if (hq->db_format == LPFC_DB_LIST_FORMAT) {
+ bf_set(lpfc_rq_db_list_fm_num_posted, &doorbell,
+ hq->notify_interval);
+ bf_set(lpfc_rq_db_list_fm_index, &doorbell,
+ hq->host_index);
+ bf_set(lpfc_rq_db_list_fm_id, &doorbell, hq->queue_id);
+ } else {
+ return -EINVAL;
+ }
+ writel(doorbell.word0, hq->db_regaddr);
+ }
+ return hq_put_index;
+}
+
+/*
+ * lpfc_sli4_rq_release - Updates internal hba index for RQ
+ *
+ * This routine will update the HBA index of a queue to reflect consumption of
+ * one Receive Queue Entry by the HBA. When the HBA indicates that it has
+ * consumed an entry the host calls this function to update the queue's
+ * internal pointers. This routine returns the number of entries that were
+ * consumed by the HBA.
+ **/
+static uint32_t
+lpfc_sli4_rq_release(struct lpfc_queue *hq, struct lpfc_queue *dq)
+{
+ /* sanity check on queue memory */
+ if (unlikely(!hq) || unlikely(!dq))
+ return 0;
+
+ if ((hq->type != LPFC_HRQ) || (dq->type != LPFC_DRQ))
+ return 0;
+ hq->hba_index = ((hq->hba_index + 1) % hq->entry_count);
+ dq->hba_index = ((dq->hba_index + 1) % dq->entry_count);
+ return 1;
+}
+
+/**
+ * lpfc_cmd_iocb - Get next command iocb entry in the ring
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ *
+ * This function returns pointer to next command iocb entry
+ * in the command ring. The caller must hold hbalock to prevent
+ * other threads consume the next command iocb.
+ * SLI-2/SLI-3 provide different sized iocbs.
+ **/
+static inline IOCB_t *
+lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
+{
+ return (IOCB_t *) (((char *) pring->sli.sli3.cmdringaddr) +
+ pring->sli.sli3.cmdidx * phba->iocb_cmd_size);
+}
+
+/**
+ * lpfc_resp_iocb - Get next response iocb entry in the ring
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ *
+ * This function returns pointer to next response iocb entry
+ * in the response ring. The caller must hold hbalock to make sure
+ * that no other thread consume the next response iocb.
+ * SLI-2/SLI-3 provide different sized iocbs.
+ **/
+static inline IOCB_t *
+lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
+{
+ return (IOCB_t *) (((char *) pring->sli.sli3.rspringaddr) +
+ pring->sli.sli3.rspidx * phba->iocb_rsp_size);
+}
+
+/**
+ * __lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called with hbalock held. This function
+ * allocates a new driver iocb object from the iocb pool. If the
+ * allocation is successful, it returns pointer to the newly
+ * allocated iocb object else it returns NULL.
+ **/
+struct lpfc_iocbq *
+__lpfc_sli_get_iocbq(struct lpfc_hba *phba)
+{
+ struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
+ struct lpfc_iocbq * iocbq = NULL;
+
+ lockdep_assert_held(&phba->hbalock);
+
+ list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
+ if (iocbq)
+ phba->iocb_cnt++;
+ if (phba->iocb_cnt > phba->iocb_max)
+ phba->iocb_max = phba->iocb_cnt;
+ return iocbq;
+}
+
+/**
+ * __lpfc_clear_active_sglq - Remove the active sglq for this XRI.
+ * @phba: Pointer to HBA context object.
+ * @xritag: XRI value.
+ *
+ * This function clears the sglq pointer from the array of active
+ * sglq's. The xritag that is passed in is used to index into the
+ * array. Before the xritag can be used it needs to be adjusted
+ * by subtracting the xribase.
+ *
+ * Returns sglq ponter = success, NULL = Failure.
+ **/
+struct lpfc_sglq *
+__lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
+{
+ struct lpfc_sglq *sglq;
+
+ sglq = phba->sli4_hba.lpfc_sglq_active_list[xritag];
+ phba->sli4_hba.lpfc_sglq_active_list[xritag] = NULL;
+ return sglq;
+}
+
+/**
+ * __lpfc_get_active_sglq - Get the active sglq for this XRI.
+ * @phba: Pointer to HBA context object.
+ * @xritag: XRI value.
+ *
+ * This function returns the sglq pointer from the array of active
+ * sglq's. The xritag that is passed in is used to index into the
+ * array. Before the xritag can be used it needs to be adjusted
+ * by subtracting the xribase.
+ *
+ * Returns sglq ponter = success, NULL = Failure.
+ **/
+struct lpfc_sglq *
+__lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
+{
+ struct lpfc_sglq *sglq;
+
+ sglq = phba->sli4_hba.lpfc_sglq_active_list[xritag];
+ return sglq;
+}
+
+/**
+ * lpfc_clr_rrq_active - Clears RRQ active bit in xri_bitmap.
+ * @phba: Pointer to HBA context object.
+ * @xritag: xri used in this exchange.
+ * @rrq: The RRQ to be cleared.
+ *
+ **/
+void
+lpfc_clr_rrq_active(struct lpfc_hba *phba,
+ uint16_t xritag,
+ struct lpfc_node_rrq *rrq)
+{
+ struct lpfc_nodelist *ndlp = NULL;
+
+ /* Lookup did to verify if did is still active on this vport */
+ if (rrq->vport)
+ ndlp = lpfc_findnode_did(rrq->vport, rrq->nlp_DID);
+
+ if (!ndlp)
+ goto out;
+
+ if (test_and_clear_bit(xritag, ndlp->active_rrqs_xri_bitmap)) {
+ rrq->send_rrq = 0;
+ rrq->xritag = 0;
+ rrq->rrq_stop_time = 0;
+ }
+out:
+ mempool_free(rrq, phba->rrq_pool);
+}
+
+/**
+ * lpfc_handle_rrq_active - Checks if RRQ has waithed RATOV.
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called with hbalock held. This function
+ * Checks if stop_time (ratov from setting rrq active) has
+ * been reached, if it has and the send_rrq flag is set then
+ * it will call lpfc_send_rrq. If the send_rrq flag is not set
+ * then it will just call the routine to clear the rrq and
+ * free the rrq resource.
+ * The timer is set to the next rrq that is going to expire before
+ * leaving the routine.
+ *
+ **/
+void
+lpfc_handle_rrq_active(struct lpfc_hba *phba)
+{
+ struct lpfc_node_rrq *rrq;
+ struct lpfc_node_rrq *nextrrq;
+ unsigned long next_time;
+ unsigned long iflags;
+ LIST_HEAD(send_rrq);
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ phba->hba_flag &= ~HBA_RRQ_ACTIVE;
+ next_time = jiffies + msecs_to_jiffies(1000 * (phba->fc_ratov + 1));
+ list_for_each_entry_safe(rrq, nextrrq,
+ &phba->active_rrq_list, list) {
+ if (time_after(jiffies, rrq->rrq_stop_time))
+ list_move(&rrq->list, &send_rrq);
+ else if (time_before(rrq->rrq_stop_time, next_time))
+ next_time = rrq->rrq_stop_time;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ if ((!list_empty(&phba->active_rrq_list)) &&
+ (!(phba->pport->load_flag & FC_UNLOADING)))
+ mod_timer(&phba->rrq_tmr, next_time);
+ list_for_each_entry_safe(rrq, nextrrq, &send_rrq, list) {
+ list_del(&rrq->list);
+ if (!rrq->send_rrq) {
+ /* this call will free the rrq */
+ lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
+ } else if (lpfc_send_rrq(phba, rrq)) {
+ /* if we send the rrq then the completion handler
+ * will clear the bit in the xribitmap.
+ */
+ lpfc_clr_rrq_active(phba, rrq->xritag,
+ rrq);
+ }
+ }
+}
+
+/**
+ * lpfc_get_active_rrq - Get the active RRQ for this exchange.
+ * @vport: Pointer to vport context object.
+ * @xri: The xri used in the exchange.
+ * @did: The targets DID for this exchange.
+ *
+ * returns NULL = rrq not found in the phba->active_rrq_list.
+ * rrq = rrq for this xri and target.
+ **/
+struct lpfc_node_rrq *
+lpfc_get_active_rrq(struct lpfc_vport *vport, uint16_t xri, uint32_t did)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_node_rrq *rrq;
+ struct lpfc_node_rrq *nextrrq;
+ unsigned long iflags;
+
+ if (phba->sli_rev != LPFC_SLI_REV4)
+ return NULL;
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) {
+ if (rrq->vport == vport && rrq->xritag == xri &&
+ rrq->nlp_DID == did){
+ list_del(&rrq->list);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return rrq;
+ }
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return NULL;
+}
+
+/**
+ * lpfc_cleanup_vports_rrqs - Remove and clear the active RRQ for this vport.
+ * @vport: Pointer to vport context object.
+ * @ndlp: Pointer to the lpfc_node_list structure.
+ * If ndlp is NULL Remove all active RRQs for this vport from the
+ * phba->active_rrq_list and clear the rrq.
+ * If ndlp is not NULL then only remove rrqs for this vport & this ndlp.
+ **/
+void
+lpfc_cleanup_vports_rrqs(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
+
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_node_rrq *rrq;
+ struct lpfc_node_rrq *nextrrq;
+ unsigned long iflags;
+ LIST_HEAD(rrq_list);
+
+ if (phba->sli_rev != LPFC_SLI_REV4)
+ return;
+ if (!ndlp) {
+ lpfc_sli4_vport_delete_els_xri_aborted(vport);
+ lpfc_sli4_vport_delete_fcp_xri_aborted(vport);
+ }
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) {
+ if (rrq->vport != vport)
+ continue;
+
+ if (!ndlp || ndlp == lpfc_findnode_did(vport, rrq->nlp_DID))
+ list_move(&rrq->list, &rrq_list);
+
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ list_for_each_entry_safe(rrq, nextrrq, &rrq_list, list) {
+ list_del(&rrq->list);
+ lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
+ }
+}
+
+/**
+ * lpfc_test_rrq_active - Test RRQ bit in xri_bitmap.
+ * @phba: Pointer to HBA context object.
+ * @ndlp: Targets nodelist pointer for this exchange.
+ * @xritag: the xri in the bitmap to test.
+ *
+ * This function returns:
+ * 0 = rrq not active for this xri
+ * 1 = rrq is valid for this xri.
+ **/
+int
+lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
+ uint16_t xritag)
+{
+ if (!ndlp)
+ return 0;
+ if (!ndlp->active_rrqs_xri_bitmap)
+ return 0;
+ if (test_bit(xritag, ndlp->active_rrqs_xri_bitmap))
+ return 1;
+ else
+ return 0;
+}
+
+/**
+ * lpfc_set_rrq_active - set RRQ active bit in xri_bitmap.
+ * @phba: Pointer to HBA context object.
+ * @ndlp: nodelist pointer for this target.
+ * @xritag: xri used in this exchange.
+ * @rxid: Remote Exchange ID.
+ * @send_rrq: Flag used to determine if we should send rrq els cmd.
+ *
+ * This function takes the hbalock.
+ * The active bit is always set in the active rrq xri_bitmap even
+ * if there is no slot avaiable for the other rrq information.
+ *
+ * returns 0 rrq actived for this xri
+ * < 0 No memory or invalid ndlp.
+ **/
+int
+lpfc_set_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
+ uint16_t xritag, uint16_t rxid, uint16_t send_rrq)
+{
+ unsigned long iflags;
+ struct lpfc_node_rrq *rrq;
+ int empty;
+
+ if (!ndlp)
+ return -EINVAL;
+
+ if (!phba->cfg_enable_rrq)
+ return -EINVAL;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ if (phba->pport->load_flag & FC_UNLOADING) {
+ phba->hba_flag &= ~HBA_RRQ_ACTIVE;
+ goto out;
+ }
+
+ if (ndlp->vport && (ndlp->vport->load_flag & FC_UNLOADING))
+ goto out;
+
+ if (!ndlp->active_rrqs_xri_bitmap)
+ goto out;
+
+ if (test_and_set_bit(xritag, ndlp->active_rrqs_xri_bitmap))
+ goto out;
+
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ rrq = mempool_alloc(phba->rrq_pool, GFP_ATOMIC);
+ if (!rrq) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "3155 Unable to allocate RRQ xri:0x%x rxid:0x%x"
+ " DID:0x%x Send:%d\n",
+ xritag, rxid, ndlp->nlp_DID, send_rrq);
+ return -EINVAL;
+ }
+ if (phba->cfg_enable_rrq == 1)
+ rrq->send_rrq = send_rrq;
+ else
+ rrq->send_rrq = 0;
+ rrq->xritag = xritag;
+ rrq->rrq_stop_time = jiffies +
+ msecs_to_jiffies(1000 * (phba->fc_ratov + 1));
+ rrq->nlp_DID = ndlp->nlp_DID;
+ rrq->vport = ndlp->vport;
+ rrq->rxid = rxid;
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ empty = list_empty(&phba->active_rrq_list);
+ list_add_tail(&rrq->list, &phba->active_rrq_list);
+ phba->hba_flag |= HBA_RRQ_ACTIVE;
+ if (empty)
+ lpfc_worker_wake_up(phba);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return 0;
+out:
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "2921 Can't set rrq active xri:0x%x rxid:0x%x"
+ " DID:0x%x Send:%d\n",
+ xritag, rxid, ndlp->nlp_DID, send_rrq);
+ return -EINVAL;
+}
+
+/**
+ * __lpfc_sli_get_els_sglq - Allocates an iocb object from sgl pool
+ * @phba: Pointer to HBA context object.
+ * @piocbq: Pointer to the iocbq.
+ *
+ * The driver calls this function with either the nvme ls ring lock
+ * or the fc els ring lock held depending on the iocb usage. This function
+ * gets a new driver sglq object from the sglq list. If the list is not empty
+ * then it is successful, it returns pointer to the newly allocated sglq
+ * object else it returns NULL.
+ **/
+static struct lpfc_sglq *
+__lpfc_sli_get_els_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq)
+{
+ struct list_head *lpfc_els_sgl_list = &phba->sli4_hba.lpfc_els_sgl_list;
+ struct lpfc_sglq *sglq = NULL;
+ struct lpfc_sglq *start_sglq = NULL;
+ struct lpfc_io_buf *lpfc_cmd;
+ struct lpfc_nodelist *ndlp;
+ int found = 0;
+ u8 cmnd;
+
+ cmnd = get_job_cmnd(phba, piocbq);
+
+ if (piocbq->cmd_flag & LPFC_IO_FCP) {
+ lpfc_cmd = piocbq->io_buf;
+ ndlp = lpfc_cmd->rdata->pnode;
+ } else if ((cmnd == CMD_GEN_REQUEST64_CR) &&
+ !(piocbq->cmd_flag & LPFC_IO_LIBDFC)) {
+ ndlp = piocbq->ndlp;
+ } else if (piocbq->cmd_flag & LPFC_IO_LIBDFC) {
+ if (piocbq->cmd_flag & LPFC_IO_LOOPBACK)
+ ndlp = NULL;
+ else
+ ndlp = piocbq->ndlp;
+ } else {
+ ndlp = piocbq->ndlp;
+ }
+
+ spin_lock(&phba->sli4_hba.sgl_list_lock);
+ list_remove_head(lpfc_els_sgl_list, sglq, struct lpfc_sglq, list);
+ start_sglq = sglq;
+ while (!found) {
+ if (!sglq)
+ break;
+ if (ndlp && ndlp->active_rrqs_xri_bitmap &&
+ test_bit(sglq->sli4_lxritag,
+ ndlp->active_rrqs_xri_bitmap)) {
+ /* This xri has an rrq outstanding for this DID.
+ * put it back in the list and get another xri.
+ */
+ list_add_tail(&sglq->list, lpfc_els_sgl_list);
+ sglq = NULL;
+ list_remove_head(lpfc_els_sgl_list, sglq,
+ struct lpfc_sglq, list);
+ if (sglq == start_sglq) {
+ list_add_tail(&sglq->list, lpfc_els_sgl_list);
+ sglq = NULL;
+ break;
+ } else
+ continue;
+ }
+ sglq->ndlp = ndlp;
+ found = 1;
+ phba->sli4_hba.lpfc_sglq_active_list[sglq->sli4_lxritag] = sglq;
+ sglq->state = SGL_ALLOCATED;
+ }
+ spin_unlock(&phba->sli4_hba.sgl_list_lock);
+ return sglq;
+}
+
+/**
+ * __lpfc_sli_get_nvmet_sglq - Allocates an iocb object from sgl pool
+ * @phba: Pointer to HBA context object.
+ * @piocbq: Pointer to the iocbq.
+ *
+ * This function is called with the sgl_list lock held. This function
+ * gets a new driver sglq object from the sglq list. If the
+ * list is not empty then it is successful, it returns pointer to the newly
+ * allocated sglq object else it returns NULL.
+ **/
+struct lpfc_sglq *
+__lpfc_sli_get_nvmet_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq)
+{
+ struct list_head *lpfc_nvmet_sgl_list;
+ struct lpfc_sglq *sglq = NULL;
+
+ lpfc_nvmet_sgl_list = &phba->sli4_hba.lpfc_nvmet_sgl_list;
+
+ lockdep_assert_held(&phba->sli4_hba.sgl_list_lock);
+
+ list_remove_head(lpfc_nvmet_sgl_list, sglq, struct lpfc_sglq, list);
+ if (!sglq)
+ return NULL;
+ phba->sli4_hba.lpfc_sglq_active_list[sglq->sli4_lxritag] = sglq;
+ sglq->state = SGL_ALLOCATED;
+ return sglq;
+}
+
+/**
+ * lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called with no lock held. This function
+ * allocates a new driver iocb object from the iocb pool. If the
+ * allocation is successful, it returns pointer to the newly
+ * allocated iocb object else it returns NULL.
+ **/
+struct lpfc_iocbq *
+lpfc_sli_get_iocbq(struct lpfc_hba *phba)
+{
+ struct lpfc_iocbq * iocbq = NULL;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ iocbq = __lpfc_sli_get_iocbq(phba);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return iocbq;
+}
+
+/**
+ * __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool
+ * @phba: Pointer to HBA context object.
+ * @iocbq: Pointer to driver iocb object.
+ *
+ * This function is called to release the driver iocb object
+ * to the iocb pool. The iotag in the iocb object
+ * does not change for each use of the iocb object. This function
+ * clears all other fields of the iocb object when it is freed.
+ * The sqlq structure that holds the xritag and phys and virtual
+ * mappings for the scatter gather list is retrieved from the
+ * active array of sglq. The get of the sglq pointer also clears
+ * the entry in the array. If the status of the IO indiactes that
+ * this IO was aborted then the sglq entry it put on the
+ * lpfc_abts_els_sgl_list until the CQ_ABORTED_XRI is received. If the
+ * IO has good status or fails for any other reason then the sglq
+ * entry is added to the free list (lpfc_els_sgl_list). The hbalock is
+ * asserted held in the code path calling this routine.
+ **/
+static void
+__lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+ struct lpfc_sglq *sglq;
+ size_t start_clean = offsetof(struct lpfc_iocbq, wqe);
+ unsigned long iflag = 0;
+ struct lpfc_sli_ring *pring;
+
+ if (iocbq->sli4_xritag == NO_XRI)
+ sglq = NULL;
+ else
+ sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_lxritag);
+
+
+ if (sglq) {
+ if (iocbq->cmd_flag & LPFC_IO_NVMET) {
+ spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock,
+ iflag);
+ sglq->state = SGL_FREED;
+ sglq->ndlp = NULL;
+ list_add_tail(&sglq->list,
+ &phba->sli4_hba.lpfc_nvmet_sgl_list);
+ spin_unlock_irqrestore(
+ &phba->sli4_hba.sgl_list_lock, iflag);
+ goto out;
+ }
+
+ if ((iocbq->cmd_flag & LPFC_EXCHANGE_BUSY) &&
+ (!(unlikely(pci_channel_offline(phba->pcidev)))) &&
+ sglq->state != SGL_XRI_ABORTED) {
+ spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock,
+ iflag);
+
+ /* Check if we can get a reference on ndlp */
+ if (sglq->ndlp && !lpfc_nlp_get(sglq->ndlp))
+ sglq->ndlp = NULL;
+
+ list_add(&sglq->list,
+ &phba->sli4_hba.lpfc_abts_els_sgl_list);
+ spin_unlock_irqrestore(
+ &phba->sli4_hba.sgl_list_lock, iflag);
+ } else {
+ spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock,
+ iflag);
+ sglq->state = SGL_FREED;
+ sglq->ndlp = NULL;
+ list_add_tail(&sglq->list,
+ &phba->sli4_hba.lpfc_els_sgl_list);
+ spin_unlock_irqrestore(
+ &phba->sli4_hba.sgl_list_lock, iflag);
+ pring = lpfc_phba_elsring(phba);
+ /* Check if TXQ queue needs to be serviced */
+ if (pring && (!list_empty(&pring->txq)))
+ lpfc_worker_wake_up(phba);
+ }
+ }
+
+out:
+ /*
+ * Clean all volatile data fields, preserve iotag and node struct.
+ */
+ memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
+ iocbq->sli4_lxritag = NO_XRI;
+ iocbq->sli4_xritag = NO_XRI;
+ iocbq->cmd_flag &= ~(LPFC_IO_NVME | LPFC_IO_NVMET | LPFC_IO_CMF |
+ LPFC_IO_NVME_LS);
+ list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
+}
+
+
+/**
+ * __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool
+ * @phba: Pointer to HBA context object.
+ * @iocbq: Pointer to driver iocb object.
+ *
+ * This function is called to release the driver iocb object to the
+ * iocb pool. The iotag in the iocb object does not change for each
+ * use of the iocb object. This function clears all other fields of
+ * the iocb object when it is freed. The hbalock is asserted held in
+ * the code path calling this routine.
+ **/
+static void
+__lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+ size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
+
+ /*
+ * Clean all volatile data fields, preserve iotag and node struct.
+ */
+ memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
+ iocbq->sli4_xritag = NO_XRI;
+ list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
+}
+
+/**
+ * __lpfc_sli_release_iocbq - Release iocb to the iocb pool
+ * @phba: Pointer to HBA context object.
+ * @iocbq: Pointer to driver iocb object.
+ *
+ * This function is called with hbalock held to release driver
+ * iocb object to the iocb pool. The iotag in the iocb object
+ * does not change for each use of the iocb object. This function
+ * clears all other fields of the iocb object when it is freed.
+ **/
+static void
+__lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+ lockdep_assert_held(&phba->hbalock);
+
+ phba->__lpfc_sli_release_iocbq(phba, iocbq);
+ phba->iocb_cnt--;
+}
+
+/**
+ * lpfc_sli_release_iocbq - Release iocb to the iocb pool
+ * @phba: Pointer to HBA context object.
+ * @iocbq: Pointer to driver iocb object.
+ *
+ * This function is called with no lock held to release the iocb to
+ * iocb pool.
+ **/
+void
+lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+ unsigned long iflags;
+
+ /*
+ * Clean all volatile data fields, preserve iotag and node struct.
+ */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ __lpfc_sli_release_iocbq(phba, iocbq);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+}
+
+/**
+ * lpfc_sli_cancel_iocbs - Cancel all iocbs from a list.
+ * @phba: Pointer to HBA context object.
+ * @iocblist: List of IOCBs.
+ * @ulpstatus: ULP status in IOCB command field.
+ * @ulpWord4: ULP word-4 in IOCB command field.
+ *
+ * This function is called with a list of IOCBs to cancel. It cancels the IOCB
+ * on the list by invoking the complete callback function associated with the
+ * IOCB with the provided @ulpstatus and @ulpword4 set to the IOCB commond
+ * fields.
+ **/
+void
+lpfc_sli_cancel_iocbs(struct lpfc_hba *phba, struct list_head *iocblist,
+ uint32_t ulpstatus, uint32_t ulpWord4)
+{
+ struct lpfc_iocbq *piocb;
+
+ while (!list_empty(iocblist)) {
+ list_remove_head(iocblist, piocb, struct lpfc_iocbq, list);
+ if (piocb->cmd_cmpl) {
+ if (piocb->cmd_flag & LPFC_IO_NVME) {
+ lpfc_nvme_cancel_iocb(phba, piocb,
+ ulpstatus, ulpWord4);
+ } else {
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ bf_set(lpfc_wcqe_c_status,
+ &piocb->wcqe_cmpl, ulpstatus);
+ piocb->wcqe_cmpl.parameter = ulpWord4;
+ } else {
+ piocb->iocb.ulpStatus = ulpstatus;
+ piocb->iocb.un.ulpWord[4] = ulpWord4;
+ }
+ (piocb->cmd_cmpl) (phba, piocb, piocb);
+ }
+ } else {
+ lpfc_sli_release_iocbq(phba, piocb);
+ }
+ }
+ return;
+}
+
+/**
+ * lpfc_sli_iocb_cmd_type - Get the iocb type
+ * @iocb_cmnd: iocb command code.
+ *
+ * This function is called by ring event handler function to get the iocb type.
+ * This function translates the iocb command to an iocb command type used to
+ * decide the final disposition of each completed IOCB.
+ * The function returns
+ * LPFC_UNKNOWN_IOCB if it is an unsupported iocb
+ * LPFC_SOL_IOCB if it is a solicited iocb completion
+ * LPFC_ABORT_IOCB if it is an abort iocb
+ * LPFC_UNSOL_IOCB if it is an unsolicited iocb
+ *
+ * The caller is not required to hold any lock.
+ **/
+static lpfc_iocb_type
+lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
+{
+ lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
+
+ if (iocb_cmnd > CMD_MAX_IOCB_CMD)
+ return 0;
+
+ switch (iocb_cmnd) {
+ case CMD_XMIT_SEQUENCE_CR:
+ case CMD_XMIT_SEQUENCE_CX:
+ case CMD_XMIT_BCAST_CN:
+ case CMD_XMIT_BCAST_CX:
+ case CMD_ELS_REQUEST_CR:
+ case CMD_ELS_REQUEST_CX:
+ case CMD_CREATE_XRI_CR:
+ case CMD_CREATE_XRI_CX:
+ case CMD_GET_RPI_CN:
+ case CMD_XMIT_ELS_RSP_CX:
+ case CMD_GET_RPI_CR:
+ case CMD_FCP_IWRITE_CR:
+ case CMD_FCP_IWRITE_CX:
+ case CMD_FCP_IREAD_CR:
+ case CMD_FCP_IREAD_CX:
+ case CMD_FCP_ICMND_CR:
+ case CMD_FCP_ICMND_CX:
+ case CMD_FCP_TSEND_CX:
+ case CMD_FCP_TRSP_CX:
+ case CMD_FCP_TRECEIVE_CX:
+ case CMD_FCP_AUTO_TRSP_CX:
+ case CMD_ADAPTER_MSG:
+ case CMD_ADAPTER_DUMP:
+ case CMD_XMIT_SEQUENCE64_CR:
+ case CMD_XMIT_SEQUENCE64_CX:
+ case CMD_XMIT_BCAST64_CN:
+ case CMD_XMIT_BCAST64_CX:
+ case CMD_ELS_REQUEST64_CR:
+ case CMD_ELS_REQUEST64_CX:
+ case CMD_FCP_IWRITE64_CR:
+ case CMD_FCP_IWRITE64_CX:
+ case CMD_FCP_IREAD64_CR:
+ case CMD_FCP_IREAD64_CX:
+ case CMD_FCP_ICMND64_CR:
+ case CMD_FCP_ICMND64_CX:
+ case CMD_FCP_TSEND64_CX:
+ case CMD_FCP_TRSP64_CX:
+ case CMD_FCP_TRECEIVE64_CX:
+ case CMD_GEN_REQUEST64_CR:
+ case CMD_GEN_REQUEST64_CX:
+ case CMD_XMIT_ELS_RSP64_CX:
+ case DSSCMD_IWRITE64_CR:
+ case DSSCMD_IWRITE64_CX:
+ case DSSCMD_IREAD64_CR:
+ case DSSCMD_IREAD64_CX:
+ case CMD_SEND_FRAME:
+ type = LPFC_SOL_IOCB;
+ break;
+ case CMD_ABORT_XRI_CN:
+ case CMD_ABORT_XRI_CX:
+ case CMD_CLOSE_XRI_CN:
+ case CMD_CLOSE_XRI_CX:
+ case CMD_XRI_ABORTED_CX:
+ case CMD_ABORT_MXRI64_CN:
+ case CMD_XMIT_BLS_RSP64_CX:
+ type = LPFC_ABORT_IOCB;
+ break;
+ case CMD_RCV_SEQUENCE_CX:
+ case CMD_RCV_ELS_REQ_CX:
+ case CMD_RCV_SEQUENCE64_CX:
+ case CMD_RCV_ELS_REQ64_CX:
+ case CMD_ASYNC_STATUS:
+ case CMD_IOCB_RCV_SEQ64_CX:
+ case CMD_IOCB_RCV_ELS64_CX:
+ case CMD_IOCB_RCV_CONT64_CX:
+ case CMD_IOCB_RET_XRI64_CX:
+ type = LPFC_UNSOL_IOCB;
+ break;
+ case CMD_IOCB_XMIT_MSEQ64_CR:
+ case CMD_IOCB_XMIT_MSEQ64_CX:
+ case CMD_IOCB_RCV_SEQ_LIST64_CX:
+ case CMD_IOCB_RCV_ELS_LIST64_CX:
+ case CMD_IOCB_CLOSE_EXTENDED_CN:
+ case CMD_IOCB_ABORT_EXTENDED_CN:
+ case CMD_IOCB_RET_HBQE64_CN:
+ case CMD_IOCB_FCP_IBIDIR64_CR:
+ case CMD_IOCB_FCP_IBIDIR64_CX:
+ case CMD_IOCB_FCP_ITASKMGT64_CX:
+ case CMD_IOCB_LOGENTRY_CN:
+ case CMD_IOCB_LOGENTRY_ASYNC_CN:
+ printk("%s - Unhandled SLI-3 Command x%x\n",
+ __func__, iocb_cmnd);
+ type = LPFC_UNKNOWN_IOCB;
+ break;
+ default:
+ type = LPFC_UNKNOWN_IOCB;
+ break;
+ }
+
+ return type;
+}
+
+/**
+ * lpfc_sli_ring_map - Issue config_ring mbox for all rings
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called from SLI initialization code
+ * to configure every ring of the HBA's SLI interface. The
+ * caller is not required to hold any lock. This function issues
+ * a config_ring mailbox command for each ring.
+ * This function returns zero if successful else returns a negative
+ * error code.
+ **/
+static int
+lpfc_sli_ring_map(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ LPFC_MBOXQ_t *pmb;
+ MAILBOX_t *pmbox;
+ int i, rc, ret = 0;
+
+ pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!pmb)
+ return -ENOMEM;
+ pmbox = &pmb->u.mb;
+ phba->link_state = LPFC_INIT_MBX_CMDS;
+ for (i = 0; i < psli->num_rings; i++) {
+ lpfc_config_ring(phba, i, pmb);
+ rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
+ if (rc != MBX_SUCCESS) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0446 Adapter failed to init (%d), "
+ "mbxCmd x%x CFG_RING, mbxStatus x%x, "
+ "ring %d\n",
+ rc, pmbox->mbxCommand,
+ pmbox->mbxStatus, i);
+ phba->link_state = LPFC_HBA_ERROR;
+ ret = -ENXIO;
+ break;
+ }
+ }
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return ret;
+}
+
+/**
+ * lpfc_sli_ringtxcmpl_put - Adds new iocb to the txcmplq
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @piocb: Pointer to the driver iocb object.
+ *
+ * The driver calls this function with the hbalock held for SLI3 ports or
+ * the ring lock held for SLI4 ports. The function adds the
+ * new iocb to txcmplq of the given ring. This function always returns
+ * 0. If this function is called for ELS ring, this function checks if
+ * there is a vport associated with the ELS command. This function also
+ * starts els_tmofunc timer if this is an ELS command.
+ **/
+static int
+lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *piocb)
+{
+ u32 ulp_command = 0;
+
+ BUG_ON(!piocb);
+ ulp_command = get_job_cmnd(phba, piocb);
+
+ list_add_tail(&piocb->list, &pring->txcmplq);
+ piocb->cmd_flag |= LPFC_IO_ON_TXCMPLQ;
+ pring->txcmplq_cnt++;
+ if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
+ (ulp_command != CMD_ABORT_XRI_WQE) &&
+ (ulp_command != CMD_ABORT_XRI_CN) &&
+ (ulp_command != CMD_CLOSE_XRI_CN)) {
+ BUG_ON(!piocb->vport);
+ if (!(piocb->vport->load_flag & FC_UNLOADING))
+ mod_timer(&piocb->vport->els_tmofunc,
+ jiffies +
+ msecs_to_jiffies(1000 * (phba->fc_ratov << 1)));
+ }
+
+ return 0;
+}
+
+/**
+ * lpfc_sli_ringtx_get - Get first element of the txq
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ *
+ * This function is called with hbalock held to get next
+ * iocb in txq of the given ring. If there is any iocb in
+ * the txq, the function returns first iocb in the list after
+ * removing the iocb from the list, else it returns NULL.
+ **/
+struct lpfc_iocbq *
+lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
+{
+ struct lpfc_iocbq *cmd_iocb;
+
+ lockdep_assert_held(&phba->hbalock);
+
+ list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list);
+ return cmd_iocb;
+}
+
+/**
+ * lpfc_cmf_sync_cmpl - Process a CMF_SYNC_WQE cmpl
+ * @phba: Pointer to HBA context object.
+ * @cmdiocb: Pointer to driver command iocb object.
+ * @rspiocb: Pointer to driver response iocb object.
+ *
+ * This routine will inform the driver of any BW adjustments we need
+ * to make. These changes will be picked up during the next CMF
+ * timer interrupt. In addition, any BW changes will be logged
+ * with LOG_CGN_MGMT.
+ **/
+static void
+lpfc_cmf_sync_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ union lpfc_wqe128 *wqe;
+ uint32_t status, info;
+ struct lpfc_wcqe_complete *wcqe = &rspiocb->wcqe_cmpl;
+ uint64_t bw, bwdif, slop;
+ uint64_t pcent, bwpcent;
+ int asig, afpin, sigcnt, fpincnt;
+ int wsigmax, wfpinmax, cg, tdp;
+ char *s;
+
+ /* First check for error */
+ status = bf_get(lpfc_wcqe_c_status, wcqe);
+ if (status) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6211 CMF_SYNC_WQE Error "
+ "req_tag x%x status x%x hwstatus x%x "
+ "tdatap x%x parm x%x\n",
+ bf_get(lpfc_wcqe_c_request_tag, wcqe),
+ bf_get(lpfc_wcqe_c_status, wcqe),
+ bf_get(lpfc_wcqe_c_hw_status, wcqe),
+ wcqe->total_data_placed,
+ wcqe->parameter);
+ goto out;
+ }
+
+ /* Gather congestion information on a successful cmpl */
+ info = wcqe->parameter;
+ phba->cmf_active_info = info;
+
+ /* See if firmware info count is valid or has changed */
+ if (info > LPFC_MAX_CMF_INFO || phba->cmf_info_per_interval == info)
+ info = 0;
+ else
+ phba->cmf_info_per_interval = info;
+
+ tdp = bf_get(lpfc_wcqe_c_cmf_bw, wcqe);
+ cg = bf_get(lpfc_wcqe_c_cmf_cg, wcqe);
+
+ /* Get BW requirement from firmware */
+ bw = (uint64_t)tdp * LPFC_CMF_BLK_SIZE;
+ if (!bw) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6212 CMF_SYNC_WQE x%x: NULL bw\n",
+ bf_get(lpfc_wcqe_c_request_tag, wcqe));
+ goto out;
+ }
+
+ /* Gather information needed for logging if a BW change is required */
+ wqe = &cmdiocb->wqe;
+ asig = bf_get(cmf_sync_asig, &wqe->cmf_sync);
+ afpin = bf_get(cmf_sync_afpin, &wqe->cmf_sync);
+ fpincnt = bf_get(cmf_sync_wfpincnt, &wqe->cmf_sync);
+ sigcnt = bf_get(cmf_sync_wsigcnt, &wqe->cmf_sync);
+ if (phba->cmf_max_bytes_per_interval != bw ||
+ (asig || afpin || sigcnt || fpincnt)) {
+ /* Are we increasing or decreasing BW */
+ if (phba->cmf_max_bytes_per_interval < bw) {
+ bwdif = bw - phba->cmf_max_bytes_per_interval;
+ s = "Increase";
+ } else {
+ bwdif = phba->cmf_max_bytes_per_interval - bw;
+ s = "Decrease";
+ }
+
+ /* What is the change percentage */
+ slop = div_u64(phba->cmf_link_byte_count, 200); /*For rounding*/
+ pcent = div64_u64(bwdif * 100 + slop,
+ phba->cmf_link_byte_count);
+ bwpcent = div64_u64(bw * 100 + slop,
+ phba->cmf_link_byte_count);
+ if (asig) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6237 BW Threshold %lld%% (%lld): "
+ "%lld%% %s: Signal Alarm: cg:%d "
+ "Info:%u\n",
+ bwpcent, bw, pcent, s, cg,
+ phba->cmf_active_info);
+ } else if (afpin) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6238 BW Threshold %lld%% (%lld): "
+ "%lld%% %s: FPIN Alarm: cg:%d "
+ "Info:%u\n",
+ bwpcent, bw, pcent, s, cg,
+ phba->cmf_active_info);
+ } else if (sigcnt) {
+ wsigmax = bf_get(cmf_sync_wsigmax, &wqe->cmf_sync);
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6239 BW Threshold %lld%% (%lld): "
+ "%lld%% %s: Signal Warning: "
+ "Cnt %d Max %d: cg:%d Info:%u\n",
+ bwpcent, bw, pcent, s, sigcnt,
+ wsigmax, cg, phba->cmf_active_info);
+ } else if (fpincnt) {
+ wfpinmax = bf_get(cmf_sync_wfpinmax, &wqe->cmf_sync);
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6240 BW Threshold %lld%% (%lld): "
+ "%lld%% %s: FPIN Warning: "
+ "Cnt %d Max %d: cg:%d Info:%u\n",
+ bwpcent, bw, pcent, s, fpincnt,
+ wfpinmax, cg, phba->cmf_active_info);
+ } else {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6241 BW Threshold %lld%% (%lld): "
+ "CMF %lld%% %s: cg:%d Info:%u\n",
+ bwpcent, bw, pcent, s, cg,
+ phba->cmf_active_info);
+ }
+ } else if (info) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6246 Info Threshold %u\n", info);
+ }
+
+ /* Save BW change to be picked up during next timer interrupt */
+ phba->cmf_last_sync_bw = bw;
+out:
+ lpfc_sli_release_iocbq(phba, cmdiocb);
+}
+
+/**
+ * lpfc_issue_cmf_sync_wqe - Issue a CMF_SYNC_WQE
+ * @phba: Pointer to HBA context object.
+ * @ms: ms to set in WQE interval, 0 means use init op
+ * @total: Total rcv bytes for this interval
+ *
+ * This routine is called every CMF timer interrupt. Its purpose is
+ * to issue a CMF_SYNC_WQE to the firmware to inform it of any events
+ * that may indicate we have congestion (FPINs or Signals). Upon
+ * completion, the firmware will indicate any BW restrictions the
+ * driver may need to take.
+ **/
+int
+lpfc_issue_cmf_sync_wqe(struct lpfc_hba *phba, u32 ms, u64 total)
+{
+ union lpfc_wqe128 *wqe;
+ struct lpfc_iocbq *sync_buf;
+ unsigned long iflags;
+ u32 ret_val;
+ u32 atot, wtot, max;
+ u16 warn_sync_period = 0;
+
+ /* First address any alarm / warning activity */
+ atot = atomic_xchg(&phba->cgn_sync_alarm_cnt, 0);
+ wtot = atomic_xchg(&phba->cgn_sync_warn_cnt, 0);
+
+ /* ONLY Managed mode will send the CMF_SYNC_WQE to the HBA */
+ if (phba->cmf_active_mode != LPFC_CFG_MANAGED ||
+ phba->link_state == LPFC_LINK_DOWN)
+ return 0;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ sync_buf = __lpfc_sli_get_iocbq(phba);
+ if (!sync_buf) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT,
+ "6244 No available WQEs for CMF_SYNC_WQE\n");
+ ret_val = ENOMEM;
+ goto out_unlock;
+ }
+
+ wqe = &sync_buf->wqe;
+
+ /* WQEs are reused. Clear stale data and set key fields to zero */
+ memset(wqe, 0, sizeof(*wqe));
+
+ /* If this is the very first CMF_SYNC_WQE, issue an init operation */
+ if (!ms) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6441 CMF Init %d - CMF_SYNC_WQE\n",
+ phba->fc_eventTag);
+ bf_set(cmf_sync_op, &wqe->cmf_sync, 1); /* 1=init */
+ bf_set(cmf_sync_interval, &wqe->cmf_sync, LPFC_CMF_INTERVAL);
+ goto initpath;
+ }
+
+ bf_set(cmf_sync_op, &wqe->cmf_sync, 0); /* 0=recalc */
+ bf_set(cmf_sync_interval, &wqe->cmf_sync, ms);
+
+ /* Check for alarms / warnings */
+ if (atot) {
+ if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
+ /* We hit an Signal alarm condition */
+ bf_set(cmf_sync_asig, &wqe->cmf_sync, 1);
+ } else {
+ /* We hit a FPIN alarm condition */
+ bf_set(cmf_sync_afpin, &wqe->cmf_sync, 1);
+ }
+ } else if (wtot) {
+ if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
+ phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
+ /* We hit an Signal warning condition */
+ max = LPFC_SEC_TO_MSEC / lpfc_fabric_cgn_frequency *
+ lpfc_acqe_cgn_frequency;
+ bf_set(cmf_sync_wsigmax, &wqe->cmf_sync, max);
+ bf_set(cmf_sync_wsigcnt, &wqe->cmf_sync, wtot);
+ warn_sync_period = lpfc_acqe_cgn_frequency;
+ } else {
+ /* We hit a FPIN warning condition */
+ bf_set(cmf_sync_wfpinmax, &wqe->cmf_sync, 1);
+ bf_set(cmf_sync_wfpincnt, &wqe->cmf_sync, 1);
+ if (phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ)
+ warn_sync_period =
+ LPFC_MSECS_TO_SECS(phba->cgn_fpin_frequency);
+ }
+ }
+
+ /* Update total read blocks during previous timer interval */
+ wqe->cmf_sync.read_bytes = (u32)(total / LPFC_CMF_BLK_SIZE);
+
+initpath:
+ bf_set(cmf_sync_ver, &wqe->cmf_sync, LPFC_CMF_SYNC_VER);
+ wqe->cmf_sync.event_tag = phba->fc_eventTag;
+ bf_set(cmf_sync_cmnd, &wqe->cmf_sync, CMD_CMF_SYNC_WQE);
+
+ /* Setup reqtag to match the wqe completion. */
+ bf_set(cmf_sync_reqtag, &wqe->cmf_sync, sync_buf->iotag);
+
+ bf_set(cmf_sync_qosd, &wqe->cmf_sync, 1);
+ bf_set(cmf_sync_period, &wqe->cmf_sync, warn_sync_period);
+
+ bf_set(cmf_sync_cmd_type, &wqe->cmf_sync, CMF_SYNC_COMMAND);
+ bf_set(cmf_sync_wqec, &wqe->cmf_sync, 1);
+ bf_set(cmf_sync_cqid, &wqe->cmf_sync, LPFC_WQE_CQ_ID_DEFAULT);
+
+ sync_buf->vport = phba->pport;
+ sync_buf->cmd_cmpl = lpfc_cmf_sync_cmpl;
+ sync_buf->cmd_dmabuf = NULL;
+ sync_buf->rsp_dmabuf = NULL;
+ sync_buf->bpl_dmabuf = NULL;
+ sync_buf->sli4_xritag = NO_XRI;
+
+ sync_buf->cmd_flag |= LPFC_IO_CMF;
+ ret_val = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], sync_buf);
+ if (ret_val) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "6214 Cannot issue CMF_SYNC_WQE: x%x\n",
+ ret_val);
+ __lpfc_sli_release_iocbq(phba, sync_buf);
+ }
+out_unlock:
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return ret_val;
+}
+
+/**
+ * lpfc_sli_next_iocb_slot - Get next iocb slot in the ring
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ *
+ * This function is called with hbalock held and the caller must post the
+ * iocb without releasing the lock. If the caller releases the lock,
+ * iocb slot returned by the function is not guaranteed to be available.
+ * The function returns pointer to the next available iocb slot if there
+ * is available slot in the ring, else it returns NULL.
+ * If the get index of the ring is ahead of the put index, the function
+ * will post an error attention event to the worker thread to take the
+ * HBA to offline state.
+ **/
+static IOCB_t *
+lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
+{
+ struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
+ uint32_t max_cmd_idx = pring->sli.sli3.numCiocb;
+
+ lockdep_assert_held(&phba->hbalock);
+
+ if ((pring->sli.sli3.next_cmdidx == pring->sli.sli3.cmdidx) &&
+ (++pring->sli.sli3.next_cmdidx >= max_cmd_idx))
+ pring->sli.sli3.next_cmdidx = 0;
+
+ if (unlikely(pring->sli.sli3.local_getidx ==
+ pring->sli.sli3.next_cmdidx)) {
+
+ pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx);
+
+ if (unlikely(pring->sli.sli3.local_getidx >= max_cmd_idx)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0315 Ring %d issue: portCmdGet %d "
+ "is bigger than cmd ring %d\n",
+ pring->ringno,
+ pring->sli.sli3.local_getidx,
+ max_cmd_idx);
+
+ phba->link_state = LPFC_HBA_ERROR;
+ /*
+ * All error attention handlers are posted to
+ * worker thread
+ */
+ phba->work_ha |= HA_ERATT;
+ phba->work_hs = HS_FFER3;
+
+ lpfc_worker_wake_up(phba);
+
+ return NULL;
+ }
+
+ if (pring->sli.sli3.local_getidx == pring->sli.sli3.next_cmdidx)
+ return NULL;
+ }
+
+ return lpfc_cmd_iocb(phba, pring);
+}
+
+/**
+ * lpfc_sli_next_iotag - Get an iotag for the iocb
+ * @phba: Pointer to HBA context object.
+ * @iocbq: Pointer to driver iocb object.
+ *
+ * This function gets an iotag for the iocb. If there is no unused iotag and
+ * the iocbq_lookup_len < 0xffff, this function allocates a bigger iotag_lookup
+ * array and assigns a new iotag.
+ * The function returns the allocated iotag if successful, else returns zero.
+ * Zero is not a valid iotag.
+ * The caller is not required to hold any lock.
+ **/
+uint16_t
+lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+ struct lpfc_iocbq **new_arr;
+ struct lpfc_iocbq **old_arr;
+ size_t new_len;
+ struct lpfc_sli *psli = &phba->sli;
+ uint16_t iotag;
+
+ spin_lock_irq(&phba->hbalock);
+ iotag = psli->last_iotag;
+ if(++iotag < psli->iocbq_lookup_len) {
+ psli->last_iotag = iotag;
+ psli->iocbq_lookup[iotag] = iocbq;
+ spin_unlock_irq(&phba->hbalock);
+ iocbq->iotag = iotag;
+ return iotag;
+ } else if (psli->iocbq_lookup_len < (0xffff
+ - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
+ new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
+ spin_unlock_irq(&phba->hbalock);
+ new_arr = kcalloc(new_len, sizeof(struct lpfc_iocbq *),
+ GFP_KERNEL);
+ if (new_arr) {
+ spin_lock_irq(&phba->hbalock);
+ old_arr = psli->iocbq_lookup;
+ if (new_len <= psli->iocbq_lookup_len) {
+ /* highly unprobable case */
+ kfree(new_arr);
+ iotag = psli->last_iotag;
+ if(++iotag < psli->iocbq_lookup_len) {
+ psli->last_iotag = iotag;
+ psli->iocbq_lookup[iotag] = iocbq;
+ spin_unlock_irq(&phba->hbalock);
+ iocbq->iotag = iotag;
+ return iotag;
+ }
+ spin_unlock_irq(&phba->hbalock);
+ return 0;
+ }
+ if (psli->iocbq_lookup)
+ memcpy(new_arr, old_arr,
+ ((psli->last_iotag + 1) *
+ sizeof (struct lpfc_iocbq *)));
+ psli->iocbq_lookup = new_arr;
+ psli->iocbq_lookup_len = new_len;
+ psli->last_iotag = iotag;
+ psli->iocbq_lookup[iotag] = iocbq;
+ spin_unlock_irq(&phba->hbalock);
+ iocbq->iotag = iotag;
+ kfree(old_arr);
+ return iotag;
+ }
+ } else
+ spin_unlock_irq(&phba->hbalock);
+
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0318 Failed to allocate IOTAG.last IOTAG is %d\n",
+ psli->last_iotag);
+
+ return 0;
+}
+
+/**
+ * lpfc_sli_submit_iocb - Submit an iocb to the firmware
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @iocb: Pointer to iocb slot in the ring.
+ * @nextiocb: Pointer to driver iocb object which need to be
+ * posted to firmware.
+ *
+ * This function is called to post a new iocb to the firmware. This
+ * function copies the new iocb to ring iocb slot and updates the
+ * ring pointers. It adds the new iocb to txcmplq if there is
+ * a completion call back for this iocb else the function will free the
+ * iocb object. The hbalock is asserted held in the code path calling
+ * this routine.
+ **/
+static void
+lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
+{
+ /*
+ * Set up an iotag
+ */
+ nextiocb->iocb.ulpIoTag = (nextiocb->cmd_cmpl) ? nextiocb->iotag : 0;
+
+
+ if (pring->ringno == LPFC_ELS_RING) {
+ lpfc_debugfs_slow_ring_trc(phba,
+ "IOCB cmd ring: wd4:x%08x wd6:x%08x wd7:x%08x",
+ *(((uint32_t *) &nextiocb->iocb) + 4),
+ *(((uint32_t *) &nextiocb->iocb) + 6),
+ *(((uint32_t *) &nextiocb->iocb) + 7));
+ }
+
+ /*
+ * Issue iocb command to adapter
+ */
+ lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size);
+ wmb();
+ pring->stats.iocb_cmd++;
+
+ /*
+ * If there is no completion routine to call, we can release the
+ * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
+ * that have no rsp ring completion, cmd_cmpl MUST be NULL.
+ */
+ if (nextiocb->cmd_cmpl)
+ lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
+ else
+ __lpfc_sli_release_iocbq(phba, nextiocb);
+
+ /*
+ * Let the HBA know what IOCB slot will be the next one the
+ * driver will put a command into.
+ */
+ pring->sli.sli3.cmdidx = pring->sli.sli3.next_cmdidx;
+ writel(pring->sli.sli3.cmdidx, &phba->host_gp[pring->ringno].cmdPutInx);
+}
+
+/**
+ * lpfc_sli_update_full_ring - Update the chip attention register
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ *
+ * The caller is not required to hold any lock for calling this function.
+ * This function updates the chip attention bits for the ring to inform firmware
+ * that there are pending work to be done for this ring and requests an
+ * interrupt when there is space available in the ring. This function is
+ * called when the driver is unable to post more iocbs to the ring due
+ * to unavailability of space in the ring.
+ **/
+static void
+lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
+{
+ int ringno = pring->ringno;
+
+ pring->flag |= LPFC_CALL_RING_AVAILABLE;
+
+ wmb();
+
+ /*
+ * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
+ * The HBA will tell us when an IOCB entry is available.
+ */
+ writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
+ readl(phba->CAregaddr); /* flush */
+
+ pring->stats.iocb_cmd_full++;
+}
+
+/**
+ * lpfc_sli_update_ring - Update chip attention register
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ *
+ * This function updates the chip attention register bit for the
+ * given ring to inform HBA that there is more work to be done
+ * in this ring. The caller is not required to hold any lock.
+ **/
+static void
+lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
+{
+ int ringno = pring->ringno;
+
+ /*
+ * Tell the HBA that there is work to do in this ring.
+ */
+ if (!(phba->sli3_options & LPFC_SLI3_CRP_ENABLED)) {
+ wmb();
+ writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
+ readl(phba->CAregaddr); /* flush */
+ }
+}
+
+/**
+ * lpfc_sli_resume_iocb - Process iocbs in the txq
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ *
+ * This function is called with hbalock held to post pending iocbs
+ * in the txq to the firmware. This function is called when driver
+ * detects space available in the ring.
+ **/
+static void
+lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
+{
+ IOCB_t *iocb;
+ struct lpfc_iocbq *nextiocb;
+
+ lockdep_assert_held(&phba->hbalock);
+
+ /*
+ * Check to see if:
+ * (a) there is anything on the txq to send
+ * (b) link is up
+ * (c) link attention events can be processed (fcp ring only)
+ * (d) IOCB processing is not blocked by the outstanding mbox command.
+ */
+
+ if (lpfc_is_link_up(phba) &&
+ (!list_empty(&pring->txq)) &&
+ (pring->ringno != LPFC_FCP_RING ||
+ phba->sli.sli_flag & LPFC_PROCESS_LA)) {
+
+ while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
+ (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
+ lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
+
+ if (iocb)
+ lpfc_sli_update_ring(phba, pring);
+ else
+ lpfc_sli_update_full_ring(phba, pring);
+ }
+
+ return;
+}
+
+/**
+ * lpfc_sli_next_hbq_slot - Get next hbq entry for the HBQ
+ * @phba: Pointer to HBA context object.
+ * @hbqno: HBQ number.
+ *
+ * This function is called with hbalock held to get the next
+ * available slot for the given HBQ. If there is free slot
+ * available for the HBQ it will return pointer to the next available
+ * HBQ entry else it will return NULL.
+ **/
+static struct lpfc_hbq_entry *
+lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
+{
+ struct hbq_s *hbqp = &phba->hbqs[hbqno];
+
+ lockdep_assert_held(&phba->hbalock);
+
+ if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx &&
+ ++hbqp->next_hbqPutIdx >= hbqp->entry_count)
+ hbqp->next_hbqPutIdx = 0;
+
+ if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) {
+ uint32_t raw_index = phba->hbq_get[hbqno];
+ uint32_t getidx = le32_to_cpu(raw_index);
+
+ hbqp->local_hbqGetIdx = getidx;
+
+ if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "1802 HBQ %d: local_hbqGetIdx "
+ "%u is > than hbqp->entry_count %u\n",
+ hbqno, hbqp->local_hbqGetIdx,
+ hbqp->entry_count);
+
+ phba->link_state = LPFC_HBA_ERROR;
+ return NULL;
+ }
+
+ if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)
+ return NULL;
+ }
+
+ return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt +
+ hbqp->hbqPutIdx;
+}
+
+/**
+ * lpfc_sli_hbqbuf_free_all - Free all the hbq buffers
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called with no lock held to free all the
+ * hbq buffers while uninitializing the SLI interface. It also
+ * frees the HBQ buffers returned by the firmware but not yet
+ * processed by the upper layers.
+ **/
+void
+lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
+{
+ struct lpfc_dmabuf *dmabuf, *next_dmabuf;
+ struct hbq_dmabuf *hbq_buf;
+ unsigned long flags;
+ int i, hbq_count;
+
+ hbq_count = lpfc_sli_hbq_count();
+ /* Return all memory used by all HBQs */
+ spin_lock_irqsave(&phba->hbalock, flags);
+ for (i = 0; i < hbq_count; ++i) {
+ list_for_each_entry_safe(dmabuf, next_dmabuf,
+ &phba->hbqs[i].hbq_buffer_list, list) {
+ hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
+ list_del(&hbq_buf->dbuf.list);
+ (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
+ }
+ phba->hbqs[i].buffer_count = 0;
+ }
+
+ /* Mark the HBQs not in use */
+ phba->hbq_in_use = 0;
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+}
+
+/**
+ * lpfc_sli_hbq_to_firmware - Post the hbq buffer to firmware
+ * @phba: Pointer to HBA context object.
+ * @hbqno: HBQ number.
+ * @hbq_buf: Pointer to HBQ buffer.
+ *
+ * This function is called with the hbalock held to post a
+ * hbq buffer to the firmware. If the function finds an empty
+ * slot in the HBQ, it will post the buffer. The function will return
+ * pointer to the hbq entry if it successfully post the buffer
+ * else it will return NULL.
+ **/
+static int
+lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
+ struct hbq_dmabuf *hbq_buf)
+{
+ lockdep_assert_held(&phba->hbalock);
+ return phba->lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buf);
+}
+
+/**
+ * lpfc_sli_hbq_to_firmware_s3 - Post the hbq buffer to SLI3 firmware
+ * @phba: Pointer to HBA context object.
+ * @hbqno: HBQ number.
+ * @hbq_buf: Pointer to HBQ buffer.
+ *
+ * This function is called with the hbalock held to post a hbq buffer to the
+ * firmware. If the function finds an empty slot in the HBQ, it will post the
+ * buffer and place it on the hbq_buffer_list. The function will return zero if
+ * it successfully post the buffer else it will return an error.
+ **/
+static int
+lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno,
+ struct hbq_dmabuf *hbq_buf)
+{
+ struct lpfc_hbq_entry *hbqe;
+ dma_addr_t physaddr = hbq_buf->dbuf.phys;
+
+ lockdep_assert_held(&phba->hbalock);
+ /* Get next HBQ entry slot to use */
+ hbqe = lpfc_sli_next_hbq_slot(phba, hbqno);
+ if (hbqe) {
+ struct hbq_s *hbqp = &phba->hbqs[hbqno];
+
+ hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
+ hbqe->bde.addrLow = le32_to_cpu(putPaddrLow(physaddr));
+ hbqe->bde.tus.f.bdeSize = hbq_buf->total_size;
+ hbqe->bde.tus.f.bdeFlags = 0;
+ hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w);
+ hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag);
+ /* Sync SLIM */
+ hbqp->hbqPutIdx = hbqp->next_hbqPutIdx;
+ writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno);
+ /* flush */
+ readl(phba->hbq_put + hbqno);
+ list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list);
+ return 0;
+ } else
+ return -ENOMEM;
+}
+
+/**
+ * lpfc_sli_hbq_to_firmware_s4 - Post the hbq buffer to SLI4 firmware
+ * @phba: Pointer to HBA context object.
+ * @hbqno: HBQ number.
+ * @hbq_buf: Pointer to HBQ buffer.
+ *
+ * This function is called with the hbalock held to post an RQE to the SLI4
+ * firmware. If able to post the RQE to the RQ it will queue the hbq entry to
+ * the hbq_buffer_list and return zero, otherwise it will return an error.
+ **/
+static int
+lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno,
+ struct hbq_dmabuf *hbq_buf)
+{
+ int rc;
+ struct lpfc_rqe hrqe;
+ struct lpfc_rqe drqe;
+ struct lpfc_queue *hrq;
+ struct lpfc_queue *drq;
+
+ if (hbqno != LPFC_ELS_HBQ)
+ return 1;
+ hrq = phba->sli4_hba.hdr_rq;
+ drq = phba->sli4_hba.dat_rq;
+
+ lockdep_assert_held(&phba->hbalock);
+ hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys);
+ hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys);
+ drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys);
+ drqe.address_hi = putPaddrHigh(hbq_buf->dbuf.phys);
+ rc = lpfc_sli4_rq_put(hrq, drq, &hrqe, &drqe);
+ if (rc < 0)
+ return rc;
+ hbq_buf->tag = (rc | (hbqno << 16));
+ list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list);
+ return 0;
+}
+
+/* HBQ for ELS and CT traffic. */
+static struct lpfc_hbq_init lpfc_els_hbq = {
+ .rn = 1,
+ .entry_count = 256,
+ .mask_count = 0,
+ .profile = 0,
+ .ring_mask = (1 << LPFC_ELS_RING),
+ .buffer_count = 0,
+ .init_count = 40,
+ .add_count = 40,
+};
+
+/* Array of HBQs */
+struct lpfc_hbq_init *lpfc_hbq_defs[] = {
+ &lpfc_els_hbq,
+};
+
+/**
+ * lpfc_sli_hbqbuf_fill_hbqs - Post more hbq buffers to HBQ
+ * @phba: Pointer to HBA context object.
+ * @hbqno: HBQ number.
+ * @count: Number of HBQ buffers to be posted.
+ *
+ * This function is called with no lock held to post more hbq buffers to the
+ * given HBQ. The function returns the number of HBQ buffers successfully
+ * posted.
+ **/
+static int
+lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
+{
+ uint32_t i, posted = 0;
+ unsigned long flags;
+ struct hbq_dmabuf *hbq_buffer;
+ LIST_HEAD(hbq_buf_list);
+ if (!phba->hbqs[hbqno].hbq_alloc_buffer)
+ return 0;
+
+ if ((phba->hbqs[hbqno].buffer_count + count) >
+ lpfc_hbq_defs[hbqno]->entry_count)
+ count = lpfc_hbq_defs[hbqno]->entry_count -
+ phba->hbqs[hbqno].buffer_count;
+ if (!count)
+ return 0;
+ /* Allocate HBQ entries */
+ for (i = 0; i < count; i++) {
+ hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
+ if (!hbq_buffer)
+ break;
+ list_add_tail(&hbq_buffer->dbuf.list, &hbq_buf_list);
+ }
+ /* Check whether HBQ is still in use */
+ spin_lock_irqsave(&phba->hbalock, flags);
+ if (!phba->hbq_in_use)
+ goto err;
+ while (!list_empty(&hbq_buf_list)) {
+ list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
+ dbuf.list);
+ hbq_buffer->tag = (phba->hbqs[hbqno].buffer_count |
+ (hbqno << 16));
+ if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
+ phba->hbqs[hbqno].buffer_count++;
+ posted++;
+ } else
+ (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
+ }
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ return posted;
+err:
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ while (!list_empty(&hbq_buf_list)) {
+ list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
+ dbuf.list);
+ (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
+ }
+ return 0;
+}
+
+/**
+ * lpfc_sli_hbqbuf_add_hbqs - Post more HBQ buffers to firmware
+ * @phba: Pointer to HBA context object.
+ * @qno: HBQ number.
+ *
+ * This function posts more buffers to the HBQ. This function
+ * is called with no lock held. The function returns the number of HBQ entries
+ * successfully allocated.
+ **/
+int
+lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno)
+{
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ return 0;
+ else
+ return lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
+ lpfc_hbq_defs[qno]->add_count);
+}
+
+/**
+ * lpfc_sli_hbqbuf_init_hbqs - Post initial buffers to the HBQ
+ * @phba: Pointer to HBA context object.
+ * @qno: HBQ queue number.
+ *
+ * This function is called from SLI initialization code path with
+ * no lock held to post initial HBQ buffers to firmware. The
+ * function returns the number of HBQ entries successfully allocated.
+ **/
+static int
+lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
+{
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ return lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
+ lpfc_hbq_defs[qno]->entry_count);
+ else
+ return lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
+ lpfc_hbq_defs[qno]->init_count);
+}
+
+/*
+ * lpfc_sli_hbqbuf_get - Remove the first hbq off of an hbq list
+ *
+ * This function removes the first hbq buffer on an hbq list and returns a
+ * pointer to that buffer. If it finds no buffers on the list it returns NULL.
+ **/
+static struct hbq_dmabuf *
+lpfc_sli_hbqbuf_get(struct list_head *rb_list)
+{
+ struct lpfc_dmabuf *d_buf;
+
+ list_remove_head(rb_list, d_buf, struct lpfc_dmabuf, list);
+ if (!d_buf)
+ return NULL;
+ return container_of(d_buf, struct hbq_dmabuf, dbuf);
+}
+
+/**
+ * lpfc_sli_rqbuf_get - Remove the first dma buffer off of an RQ list
+ * @phba: Pointer to HBA context object.
+ * @hrq: HBQ number.
+ *
+ * This function removes the first RQ buffer on an RQ buffer list and returns a
+ * pointer to that buffer. If it finds no buffers on the list it returns NULL.
+ **/
+static struct rqb_dmabuf *
+lpfc_sli_rqbuf_get(struct lpfc_hba *phba, struct lpfc_queue *hrq)
+{
+ struct lpfc_dmabuf *h_buf;
+ struct lpfc_rqb *rqbp;
+
+ rqbp = hrq->rqbp;
+ list_remove_head(&rqbp->rqb_buffer_list, h_buf,
+ struct lpfc_dmabuf, list);
+ if (!h_buf)
+ return NULL;
+ rqbp->buffer_count--;
+ return container_of(h_buf, struct rqb_dmabuf, hbuf);
+}
+
+/**
+ * lpfc_sli_hbqbuf_find - Find the hbq buffer associated with a tag
+ * @phba: Pointer to HBA context object.
+ * @tag: Tag of the hbq buffer.
+ *
+ * This function searches for the hbq buffer associated with the given tag in
+ * the hbq buffer list. If it finds the hbq buffer, it returns the hbq_buffer
+ * otherwise it returns NULL.
+ **/
+static struct hbq_dmabuf *
+lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
+{
+ struct lpfc_dmabuf *d_buf;
+ struct hbq_dmabuf *hbq_buf;
+ uint32_t hbqno;
+
+ hbqno = tag >> 16;
+ if (hbqno >= LPFC_MAX_HBQS)
+ return NULL;
+
+ spin_lock_irq(&phba->hbalock);
+ list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) {
+ hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+ if (hbq_buf->tag == tag) {
+ spin_unlock_irq(&phba->hbalock);
+ return hbq_buf;
+ }
+ }
+ spin_unlock_irq(&phba->hbalock);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "1803 Bad hbq tag. Data: x%x x%x\n",
+ tag, phba->hbqs[tag >> 16].buffer_count);
+ return NULL;
+}
+
+/**
+ * lpfc_sli_free_hbq - Give back the hbq buffer to firmware
+ * @phba: Pointer to HBA context object.
+ * @hbq_buffer: Pointer to HBQ buffer.
+ *
+ * This function is called with hbalock. This function gives back
+ * the hbq buffer to firmware. If the HBQ does not have space to
+ * post the buffer, it will free the buffer.
+ **/
+void
+lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer)
+{
+ uint32_t hbqno;
+
+ if (hbq_buffer) {
+ hbqno = hbq_buffer->tag >> 16;
+ if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
+ (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
+ }
+}
+
+/**
+ * lpfc_sli_chk_mbx_command - Check if the mailbox is a legitimate mailbox
+ * @mbxCommand: mailbox command code.
+ *
+ * This function is called by the mailbox event handler function to verify
+ * that the completed mailbox command is a legitimate mailbox command. If the
+ * completed mailbox is not known to the function, it will return MBX_SHUTDOWN
+ * and the mailbox event handler will take the HBA offline.
+ **/
+static int
+lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
+{
+ uint8_t ret;
+
+ switch (mbxCommand) {
+ case MBX_LOAD_SM:
+ case MBX_READ_NV:
+ case MBX_WRITE_NV:
+ case MBX_WRITE_VPARMS:
+ case MBX_RUN_BIU_DIAG:
+ case MBX_INIT_LINK:
+ case MBX_DOWN_LINK:
+ case MBX_CONFIG_LINK:
+ case MBX_CONFIG_RING:
+ case MBX_RESET_RING:
+ case MBX_READ_CONFIG:
+ case MBX_READ_RCONFIG:
+ case MBX_READ_SPARM:
+ case MBX_READ_STATUS:
+ case MBX_READ_RPI:
+ case MBX_READ_XRI:
+ case MBX_READ_REV:
+ case MBX_READ_LNK_STAT:
+ case MBX_REG_LOGIN:
+ case MBX_UNREG_LOGIN:
+ case MBX_CLEAR_LA:
+ case MBX_DUMP_MEMORY:
+ case MBX_DUMP_CONTEXT:
+ case MBX_RUN_DIAGS:
+ case MBX_RESTART:
+ case MBX_UPDATE_CFG:
+ case MBX_DOWN_LOAD:
+ case MBX_DEL_LD_ENTRY:
+ case MBX_RUN_PROGRAM:
+ case MBX_SET_MASK:
+ case MBX_SET_VARIABLE:
+ case MBX_UNREG_D_ID:
+ case MBX_KILL_BOARD:
+ case MBX_CONFIG_FARP:
+ case MBX_BEACON:
+ case MBX_LOAD_AREA:
+ case MBX_RUN_BIU_DIAG64:
+ case MBX_CONFIG_PORT:
+ case MBX_READ_SPARM64:
+ case MBX_READ_RPI64:
+ case MBX_REG_LOGIN64:
+ case MBX_READ_TOPOLOGY:
+ case MBX_WRITE_WWN:
+ case MBX_SET_DEBUG:
+ case MBX_LOAD_EXP_ROM:
+ case MBX_ASYNCEVT_ENABLE:
+ case MBX_REG_VPI:
+ case MBX_UNREG_VPI:
+ case MBX_HEARTBEAT:
+ case MBX_PORT_CAPABILITIES:
+ case MBX_PORT_IOV_CONTROL:
+ case MBX_SLI4_CONFIG:
+ case MBX_SLI4_REQ_FTRS:
+ case MBX_REG_FCFI:
+ case MBX_UNREG_FCFI:
+ case MBX_REG_VFI:
+ case MBX_UNREG_VFI:
+ case MBX_INIT_VPI:
+ case MBX_INIT_VFI:
+ case MBX_RESUME_RPI:
+ case MBX_READ_EVENT_LOG_STATUS:
+ case MBX_READ_EVENT_LOG:
+ case MBX_SECURITY_MGMT:
+ case MBX_AUTH_PORT:
+ case MBX_ACCESS_VDATA:
+ ret = mbxCommand;
+ break;
+ default:
+ ret = MBX_SHUTDOWN;
+ break;
+ }
+ return ret;
+}
+
+/**
+ * lpfc_sli_wake_mbox_wait - lpfc_sli_issue_mbox_wait mbox completion handler
+ * @phba: Pointer to HBA context object.
+ * @pmboxq: Pointer to mailbox command.
+ *
+ * This is completion handler function for mailbox commands issued from
+ * lpfc_sli_issue_mbox_wait function. This function is called by the
+ * mailbox event handler function with no lock held. This function
+ * will wake up thread waiting on the wait queue pointed by context1
+ * of the mailbox.
+ **/
+void
+lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
+{
+ unsigned long drvr_flag;
+ struct completion *pmbox_done;
+
+ /*
+ * If pmbox_done is empty, the driver thread gave up waiting and
+ * continued running.
+ */
+ pmboxq->mbox_flag |= LPFC_MBX_WAKE;
+ spin_lock_irqsave(&phba->hbalock, drvr_flag);
+ pmbox_done = (struct completion *)pmboxq->context3;
+ if (pmbox_done)
+ complete(pmbox_done);
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ return;
+}
+
+static void
+__lpfc_sli_rpi_release(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
+{
+ unsigned long iflags;
+
+ if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
+ lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
+ spin_lock_irqsave(&ndlp->lock, iflags);
+ ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
+ ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
+ spin_unlock_irqrestore(&ndlp->lock, iflags);
+ }
+ ndlp->nlp_flag &= ~NLP_UNREG_INP;
+}
+
+void
+lpfc_sli_rpi_release(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
+{
+ __lpfc_sli_rpi_release(vport, ndlp);
+}
+
+/**
+ * lpfc_sli_def_mbox_cmpl - Default mailbox completion handler
+ * @phba: Pointer to HBA context object.
+ * @pmb: Pointer to mailbox object.
+ *
+ * This function is the default mailbox completion handler. It
+ * frees the memory resources associated with the completed mailbox
+ * command. If the completed command is a REG_LOGIN mailbox command,
+ * this function will issue a UREG_LOGIN to re-claim the RPI.
+ **/
+void
+lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+{
+ struct lpfc_vport *vport = pmb->vport;
+ struct lpfc_dmabuf *mp;
+ struct lpfc_nodelist *ndlp;
+ struct Scsi_Host *shost;
+ uint16_t rpi, vpi;
+ int rc;
+
+ /*
+ * If a REG_LOGIN succeeded after node is destroyed or node
+ * is in re-discovery driver need to cleanup the RPI.
+ */
+ if (!(phba->pport->load_flag & FC_UNLOADING) &&
+ pmb->u.mb.mbxCommand == MBX_REG_LOGIN64 &&
+ !pmb->u.mb.mbxStatus) {
+ mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
+ if (mp) {
+ pmb->ctx_buf = NULL;
+ lpfc_mbuf_free(phba, mp->virt, mp->phys);
+ kfree(mp);
+ }
+ rpi = pmb->u.mb.un.varWords[0];
+ vpi = pmb->u.mb.un.varRegLogin.vpi;
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ vpi -= phba->sli4_hba.max_cfg_param.vpi_base;
+ lpfc_unreg_login(phba, vpi, rpi, pmb);
+ pmb->vport = vport;
+ pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+ if (rc != MBX_NOT_FINISHED)
+ return;
+ }
+
+ if ((pmb->u.mb.mbxCommand == MBX_REG_VPI) &&
+ !(phba->pport->load_flag & FC_UNLOADING) &&
+ !pmb->u.mb.mbxStatus) {
+ shost = lpfc_shost_from_vport(vport);
+ spin_lock_irq(shost->host_lock);
+ vport->vpi_state |= LPFC_VPI_REGISTERED;
+ vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
+ spin_unlock_irq(shost->host_lock);
+ }
+
+ if (pmb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
+ ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
+ lpfc_nlp_put(ndlp);
+ }
+
+ if (pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) {
+ ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
+
+ /* Check to see if there are any deferred events to process */
+ if (ndlp) {
+ lpfc_printf_vlog(
+ vport,
+ KERN_INFO, LOG_MBOX | LOG_DISCOVERY,
+ "1438 UNREG cmpl deferred mbox x%x "
+ "on NPort x%x Data: x%x x%x x%px x%x x%x\n",
+ ndlp->nlp_rpi, ndlp->nlp_DID,
+ ndlp->nlp_flag, ndlp->nlp_defer_did,
+ ndlp, vport->load_flag, kref_read(&ndlp->kref));
+
+ if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
+ (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
+ ndlp->nlp_flag &= ~NLP_UNREG_INP;
+ ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
+ lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+ } else {
+ __lpfc_sli_rpi_release(vport, ndlp);
+ }
+
+ /* The unreg_login mailbox is complete and had a
+ * reference that has to be released. The PLOGI
+ * got its own ref.
+ */
+ lpfc_nlp_put(ndlp);
+ pmb->ctx_ndlp = NULL;
+ }
+ }
+
+ /* This nlp_put pairs with lpfc_sli4_resume_rpi */
+ if (pmb->u.mb.mbxCommand == MBX_RESUME_RPI) {
+ ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
+ lpfc_nlp_put(ndlp);
+ }
+
+ /* Check security permission status on INIT_LINK mailbox command */
+ if ((pmb->u.mb.mbxCommand == MBX_INIT_LINK) &&
+ (pmb->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION))
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2860 SLI authentication is required "
+ "for INIT_LINK but has not done yet\n");
+
+ if (bf_get(lpfc_mqe_command, &pmb->u.mqe) == MBX_SLI4_CONFIG)
+ lpfc_sli4_mbox_cmd_free(phba, pmb);
+ else
+ lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
+}
+ /**
+ * lpfc_sli4_unreg_rpi_cmpl_clr - mailbox completion handler
+ * @phba: Pointer to HBA context object.
+ * @pmb: Pointer to mailbox object.
+ *
+ * This function is the unreg rpi mailbox completion handler. It
+ * frees the memory resources associated with the completed mailbox
+ * command. An additional reference is put on the ndlp to prevent
+ * lpfc_nlp_release from freeing the rpi bit in the bitmask before
+ * the unreg mailbox command completes, this routine puts the
+ * reference back.
+ *
+ **/
+void
+lpfc_sli4_unreg_rpi_cmpl_clr(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+{
+ struct lpfc_vport *vport = pmb->vport;
+ struct lpfc_nodelist *ndlp;
+
+ ndlp = pmb->ctx_ndlp;
+ if (pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) {
+ if (phba->sli_rev == LPFC_SLI_REV4 &&
+ (bf_get(lpfc_sli_intf_if_type,
+ &phba->sli4_hba.sli_intf) >=
+ LPFC_SLI_INTF_IF_TYPE_2)) {
+ if (ndlp) {
+ lpfc_printf_vlog(
+ vport, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "0010 UNREG_LOGIN vpi:%x "
+ "rpi:%x DID:%x defer x%x flg x%x "
+ "x%px\n",
+ vport->vpi, ndlp->nlp_rpi,
+ ndlp->nlp_DID, ndlp->nlp_defer_did,
+ ndlp->nlp_flag,
+ ndlp);
+ ndlp->nlp_flag &= ~NLP_LOGO_ACC;
+
+ /* Check to see if there are any deferred
+ * events to process
+ */
+ if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
+ (ndlp->nlp_defer_did !=
+ NLP_EVT_NOTHING_PENDING)) {
+ lpfc_printf_vlog(
+ vport, KERN_INFO, LOG_DISCOVERY,
+ "4111 UNREG cmpl deferred "
+ "clr x%x on "
+ "NPort x%x Data: x%x x%px\n",
+ ndlp->nlp_rpi, ndlp->nlp_DID,
+ ndlp->nlp_defer_did, ndlp);
+ ndlp->nlp_flag &= ~NLP_UNREG_INP;
+ ndlp->nlp_defer_did =
+ NLP_EVT_NOTHING_PENDING;
+ lpfc_issue_els_plogi(
+ vport, ndlp->nlp_DID, 0);
+ } else {
+ __lpfc_sli_rpi_release(vport, ndlp);
+ }
+ lpfc_nlp_put(ndlp);
+ }
+ }
+ }
+
+ mempool_free(pmb, phba->mbox_mem_pool);
+}
+
+/**
+ * lpfc_sli_handle_mb_event - Handle mailbox completions from firmware
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called with no lock held. This function processes all
+ * the completed mailbox commands and gives it to upper layers. The interrupt
+ * service routine processes mailbox completion interrupt and adds completed
+ * mailbox commands to the mboxq_cmpl queue and signals the worker thread.
+ * Worker thread call lpfc_sli_handle_mb_event, which will return the
+ * completed mailbox commands in mboxq_cmpl queue to the upper layers. This
+ * function returns the mailbox commands to the upper layer by calling the
+ * completion handler function of each mailbox.
+ **/
+int
+lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
+{
+ MAILBOX_t *pmbox;
+ LPFC_MBOXQ_t *pmb;
+ int rc;
+ LIST_HEAD(cmplq);
+
+ phba->sli.slistat.mbox_event++;
+
+ /* Get all completed mailboxe buffers into the cmplq */
+ spin_lock_irq(&phba->hbalock);
+ list_splice_init(&phba->sli.mboxq_cmpl, &cmplq);
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Get a Mailbox buffer to setup mailbox commands for callback */
+ do {
+ list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list);
+ if (pmb == NULL)
+ break;
+
+ pmbox = &pmb->u.mb;
+
+ if (pmbox->mbxCommand != MBX_HEARTBEAT) {
+ if (pmb->vport) {
+ lpfc_debugfs_disc_trc(pmb->vport,
+ LPFC_DISC_TRC_MBOX_VPORT,
+ "MBOX cmpl vport: cmd:x%x mb:x%x x%x",
+ (uint32_t)pmbox->mbxCommand,
+ pmbox->un.varWords[0],
+ pmbox->un.varWords[1]);
+ }
+ else {
+ lpfc_debugfs_disc_trc(phba->pport,
+ LPFC_DISC_TRC_MBOX,
+ "MBOX cmpl: cmd:x%x mb:x%x x%x",
+ (uint32_t)pmbox->mbxCommand,
+ pmbox->un.varWords[0],
+ pmbox->un.varWords[1]);
+ }
+ }
+
+ /*
+ * It is a fatal error if unknown mbox command completion.
+ */
+ if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
+ MBX_SHUTDOWN) {
+ /* Unknown mailbox command compl */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):0323 Unknown Mailbox command "
+ "x%x (x%x/x%x) Cmpl\n",
+ pmb->vport ? pmb->vport->vpi :
+ LPFC_VPORT_UNKNOWN,
+ pmbox->mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba,
+ pmb),
+ lpfc_sli_config_mbox_opcode_get(phba,
+ pmb));
+ phba->link_state = LPFC_HBA_ERROR;
+ phba->work_hs = HS_FFER3;
+ lpfc_handle_eratt(phba);
+ continue;
+ }
+
+ if (pmbox->mbxStatus) {
+ phba->sli.slistat.mbox_stat_err++;
+ if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
+ /* Mbox cmd cmpl error - RETRYing */
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_MBOX | LOG_SLI,
+ "(%d):0305 Mbox cmd cmpl "
+ "error - RETRYing Data: x%x "
+ "(x%x/x%x) x%x x%x x%x\n",
+ pmb->vport ? pmb->vport->vpi :
+ LPFC_VPORT_UNKNOWN,
+ pmbox->mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba,
+ pmb),
+ lpfc_sli_config_mbox_opcode_get(phba,
+ pmb),
+ pmbox->mbxStatus,
+ pmbox->un.varWords[0],
+ pmb->vport ? pmb->vport->port_state :
+ LPFC_VPORT_UNKNOWN);
+ pmbox->mbxStatus = 0;
+ pmbox->mbxOwner = OWN_HOST;
+ rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+ if (rc != MBX_NOT_FINISHED)
+ continue;
+ }
+ }
+
+ /* Mailbox cmd <cmd> Cmpl <cmpl> */
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "(%d):0307 Mailbox cmd x%x (x%x/x%x) Cmpl %ps "
+ "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x "
+ "x%x x%x x%x\n",
+ pmb->vport ? pmb->vport->vpi : 0,
+ pmbox->mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba, pmb),
+ lpfc_sli_config_mbox_opcode_get(phba, pmb),
+ pmb->mbox_cmpl,
+ *((uint32_t *) pmbox),
+ pmbox->un.varWords[0],
+ pmbox->un.varWords[1],
+ pmbox->un.varWords[2],
+ pmbox->un.varWords[3],
+ pmbox->un.varWords[4],
+ pmbox->un.varWords[5],
+ pmbox->un.varWords[6],
+ pmbox->un.varWords[7],
+ pmbox->un.varWords[8],
+ pmbox->un.varWords[9],
+ pmbox->un.varWords[10]);
+
+ if (pmb->mbox_cmpl)
+ pmb->mbox_cmpl(phba,pmb);
+ } while (1);
+ return 0;
+}
+
+/**
+ * lpfc_sli_get_buff - Get the buffer associated with the buffer tag
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @tag: buffer tag.
+ *
+ * This function is called with no lock held. When QUE_BUFTAG_BIT bit
+ * is set in the tag the buffer is posted for a particular exchange,
+ * the function will return the buffer without replacing the buffer.
+ * If the buffer is for unsolicited ELS or CT traffic, this function
+ * returns the buffer and also posts another buffer to the firmware.
+ **/
+static struct lpfc_dmabuf *
+lpfc_sli_get_buff(struct lpfc_hba *phba,
+ struct lpfc_sli_ring *pring,
+ uint32_t tag)
+{
+ struct hbq_dmabuf *hbq_entry;
+
+ if (tag & QUE_BUFTAG_BIT)
+ return lpfc_sli_ring_taggedbuf_get(phba, pring, tag);
+ hbq_entry = lpfc_sli_hbqbuf_find(phba, tag);
+ if (!hbq_entry)
+ return NULL;
+ return &hbq_entry->dbuf;
+}
+
+/**
+ * lpfc_nvme_unsol_ls_handler - Process an unsolicited event data buffer
+ * containing a NVME LS request.
+ * @phba: pointer to lpfc hba data structure.
+ * @piocb: pointer to the iocbq struct representing the sequence starting
+ * frame.
+ *
+ * This routine initially validates the NVME LS, validates there is a login
+ * with the port that sent the LS, and then calls the appropriate nvme host
+ * or target LS request handler.
+ **/
+static void
+lpfc_nvme_unsol_ls_handler(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
+{
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_dmabuf *d_buf;
+ struct hbq_dmabuf *nvmebuf;
+ struct fc_frame_header *fc_hdr;
+ struct lpfc_async_xchg_ctx *axchg = NULL;
+ char *failwhy = NULL;
+ uint32_t oxid, sid, did, fctl, size;
+ int ret = 1;
+
+ d_buf = piocb->cmd_dmabuf;
+
+ nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+ fc_hdr = nvmebuf->hbuf.virt;
+ oxid = be16_to_cpu(fc_hdr->fh_ox_id);
+ sid = sli4_sid_from_fc_hdr(fc_hdr);
+ did = sli4_did_from_fc_hdr(fc_hdr);
+ fctl = (fc_hdr->fh_f_ctl[0] << 16 |
+ fc_hdr->fh_f_ctl[1] << 8 |
+ fc_hdr->fh_f_ctl[2]);
+ size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl);
+
+ lpfc_nvmeio_data(phba, "NVME LS RCV: xri x%x sz %d from %06x\n",
+ oxid, size, sid);
+
+ if (phba->pport->load_flag & FC_UNLOADING) {
+ failwhy = "Driver Unloading";
+ } else if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) {
+ failwhy = "NVME FC4 Disabled";
+ } else if (!phba->nvmet_support && !phba->pport->localport) {
+ failwhy = "No Localport";
+ } else if (phba->nvmet_support && !phba->targetport) {
+ failwhy = "No Targetport";
+ } else if (unlikely(fc_hdr->fh_r_ctl != FC_RCTL_ELS4_REQ)) {
+ failwhy = "Bad NVME LS R_CTL";
+ } else if (unlikely((fctl & 0x00FF0000) !=
+ (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT))) {
+ failwhy = "Bad NVME LS F_CTL";
+ } else {
+ axchg = kzalloc(sizeof(*axchg), GFP_ATOMIC);
+ if (!axchg)
+ failwhy = "No CTX memory";
+ }
+
+ if (unlikely(failwhy)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6154 Drop NVME LS: SID %06X OXID x%X: %s\n",
+ sid, oxid, failwhy);
+ goto out_fail;
+ }
+
+ /* validate the source of the LS is logged in */
+ ndlp = lpfc_findnode_did(phba->pport, sid);
+ if (!ndlp ||
+ ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
+ "6216 NVME Unsol rcv: No ndlp: "
+ "NPort_ID x%x oxid x%x\n",
+ sid, oxid);
+ goto out_fail;
+ }
+
+ axchg->phba = phba;
+ axchg->ndlp = ndlp;
+ axchg->size = size;
+ axchg->oxid = oxid;
+ axchg->sid = sid;
+ axchg->wqeq = NULL;
+ axchg->state = LPFC_NVME_STE_LS_RCV;
+ axchg->entry_cnt = 1;
+ axchg->rqb_buffer = (void *)nvmebuf;
+ axchg->hdwq = &phba->sli4_hba.hdwq[0];
+ axchg->payload = nvmebuf->dbuf.virt;
+ INIT_LIST_HEAD(&axchg->list);
+
+ if (phba->nvmet_support) {
+ ret = lpfc_nvmet_handle_lsreq(phba, axchg);
+ spin_lock_irq(&ndlp->lock);
+ if (!ret && !(ndlp->fc4_xpt_flags & NLP_XPT_HAS_HH)) {
+ ndlp->fc4_xpt_flags |= NLP_XPT_HAS_HH;
+ spin_unlock_irq(&ndlp->lock);
+
+ /* This reference is a single occurrence to hold the
+ * node valid until the nvmet transport calls
+ * host_release.
+ */
+ if (!lpfc_nlp_get(ndlp))
+ goto out_fail;
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_NODE,
+ "6206 NVMET unsol ls_req ndlp x%px "
+ "DID x%x xflags x%x refcnt %d\n",
+ ndlp, ndlp->nlp_DID,
+ ndlp->fc4_xpt_flags,
+ kref_read(&ndlp->kref));
+ } else {
+ spin_unlock_irq(&ndlp->lock);
+ }
+ } else {
+ ret = lpfc_nvme_handle_lsreq(phba, axchg);
+ }
+
+ /* if zero, LS was successfully handled. If non-zero, LS not handled */
+ if (!ret)
+ return;
+
+out_fail:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6155 Drop NVME LS from DID %06X: SID %06X OXID x%X "
+ "NVMe%s handler failed %d\n",
+ did, sid, oxid,
+ (phba->nvmet_support) ? "T" : "I", ret);
+
+ /* recycle receive buffer */
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+
+ /* If start of new exchange, abort it */
+ if (axchg && (fctl & FC_FC_FIRST_SEQ && !(fctl & FC_FC_EX_CTX)))
+ ret = lpfc_nvme_unsol_ls_issue_abort(phba, axchg, sid, oxid);
+
+ if (ret)
+ kfree(axchg);
+}
+
+/**
+ * lpfc_complete_unsol_iocb - Complete an unsolicited sequence
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @saveq: Pointer to the iocbq struct representing the sequence starting frame.
+ * @fch_r_ctl: the r_ctl for the first frame of the sequence.
+ * @fch_type: the type for the first frame of the sequence.
+ *
+ * This function is called with no lock held. This function uses the r_ctl and
+ * type of the received sequence to find the correct callback function to call
+ * to process the sequence.
+ **/
+static int
+lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *saveq, uint32_t fch_r_ctl,
+ uint32_t fch_type)
+{
+ int i;
+
+ switch (fch_type) {
+ case FC_TYPE_NVME:
+ lpfc_nvme_unsol_ls_handler(phba, saveq);
+ return 1;
+ default:
+ break;
+ }
+
+ /* unSolicited Responses */
+ if (pring->prt[0].profile) {
+ if (pring->prt[0].lpfc_sli_rcv_unsol_event)
+ (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
+ saveq);
+ return 1;
+ }
+ /* We must search, based on rctl / type
+ for the right routine */
+ for (i = 0; i < pring->num_mask; i++) {
+ if ((pring->prt[i].rctl == fch_r_ctl) &&
+ (pring->prt[i].type == fch_type)) {
+ if (pring->prt[i].lpfc_sli_rcv_unsol_event)
+ (pring->prt[i].lpfc_sli_rcv_unsol_event)
+ (phba, pring, saveq);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static void
+lpfc_sli_prep_unsol_wqe(struct lpfc_hba *phba,
+ struct lpfc_iocbq *saveq)
+{
+ IOCB_t *irsp;
+ union lpfc_wqe128 *wqe;
+ u16 i = 0;
+
+ irsp = &saveq->iocb;
+ wqe = &saveq->wqe;
+
+ /* Fill wcqe with the IOCB status fields */
+ bf_set(lpfc_wcqe_c_status, &saveq->wcqe_cmpl, irsp->ulpStatus);
+ saveq->wcqe_cmpl.word3 = irsp->ulpBdeCount;
+ saveq->wcqe_cmpl.parameter = irsp->un.ulpWord[4];
+ saveq->wcqe_cmpl.total_data_placed = irsp->unsli3.rcvsli3.acc_len;
+
+ /* Source ID */
+ bf_set(els_rsp64_sid, &wqe->xmit_els_rsp, irsp->un.rcvels.parmRo);
+
+ /* rx-id of the response frame */
+ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, irsp->ulpContext);
+
+ /* ox-id of the frame */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ irsp->unsli3.rcvsli3.ox_id);
+
+ /* DID */
+ bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest,
+ irsp->un.rcvels.remoteID);
+
+ /* unsol data len */
+ for (i = 0; i < irsp->ulpBdeCount; i++) {
+ struct lpfc_hbq_entry *hbqe = NULL;
+
+ if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
+ if (i == 0) {
+ hbqe = (struct lpfc_hbq_entry *)
+ &irsp->un.ulpWord[0];
+ saveq->wqe.gen_req.bde.tus.f.bdeSize =
+ hbqe->bde.tus.f.bdeSize;
+ } else if (i == 1) {
+ hbqe = (struct lpfc_hbq_entry *)
+ &irsp->unsli3.sli3Words[4];
+ saveq->unsol_rcv_len = hbqe->bde.tus.f.bdeSize;
+ }
+ }
+ }
+}
+
+/**
+ * lpfc_sli_process_unsol_iocb - Unsolicited iocb handler
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @saveq: Pointer to the unsolicited iocb.
+ *
+ * This function is called with no lock held by the ring event handler
+ * when there is an unsolicited iocb posted to the response ring by the
+ * firmware. This function gets the buffer associated with the iocbs
+ * and calls the event handler for the ring. This function handles both
+ * qring buffers and hbq buffers.
+ * When the function returns 1 the caller can free the iocb object otherwise
+ * upper layer functions will free the iocb objects.
+ **/
+static int
+lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *saveq)
+{
+ IOCB_t * irsp;
+ WORD5 * w5p;
+ dma_addr_t paddr;
+ uint32_t Rctl, Type;
+ struct lpfc_iocbq *iocbq;
+ struct lpfc_dmabuf *dmzbuf;
+
+ irsp = &saveq->iocb;
+ saveq->vport = phba->pport;
+
+ if (irsp->ulpCommand == CMD_ASYNC_STATUS) {
+ if (pring->lpfc_sli_rcv_async_status)
+ pring->lpfc_sli_rcv_async_status(phba, pring, saveq);
+ else
+ lpfc_printf_log(phba,
+ KERN_WARNING,
+ LOG_SLI,
+ "0316 Ring %d handler: unexpected "
+ "ASYNC_STATUS iocb received evt_code "
+ "0x%x\n",
+ pring->ringno,
+ irsp->un.asyncstat.evt_code);
+ return 1;
+ }
+
+ if ((irsp->ulpCommand == CMD_IOCB_RET_XRI64_CX) &&
+ (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) {
+ if (irsp->ulpBdeCount > 0) {
+ dmzbuf = lpfc_sli_get_buff(phba, pring,
+ irsp->un.ulpWord[3]);
+ lpfc_in_buf_free(phba, dmzbuf);
+ }
+
+ if (irsp->ulpBdeCount > 1) {
+ dmzbuf = lpfc_sli_get_buff(phba, pring,
+ irsp->unsli3.sli3Words[3]);
+ lpfc_in_buf_free(phba, dmzbuf);
+ }
+
+ if (irsp->ulpBdeCount > 2) {
+ dmzbuf = lpfc_sli_get_buff(phba, pring,
+ irsp->unsli3.sli3Words[7]);
+ lpfc_in_buf_free(phba, dmzbuf);
+ }
+
+ return 1;
+ }
+
+ if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
+ if (irsp->ulpBdeCount != 0) {
+ saveq->cmd_dmabuf = lpfc_sli_get_buff(phba, pring,
+ irsp->un.ulpWord[3]);
+ if (!saveq->cmd_dmabuf)
+ lpfc_printf_log(phba,
+ KERN_ERR,
+ LOG_SLI,
+ "0341 Ring %d Cannot find buffer for "
+ "an unsolicited iocb. tag 0x%x\n",
+ pring->ringno,
+ irsp->un.ulpWord[3]);
+ }
+ if (irsp->ulpBdeCount == 2) {
+ saveq->bpl_dmabuf = lpfc_sli_get_buff(phba, pring,
+ irsp->unsli3.sli3Words[7]);
+ if (!saveq->bpl_dmabuf)
+ lpfc_printf_log(phba,
+ KERN_ERR,
+ LOG_SLI,
+ "0342 Ring %d Cannot find buffer for an"
+ " unsolicited iocb. tag 0x%x\n",
+ pring->ringno,
+ irsp->unsli3.sli3Words[7]);
+ }
+ list_for_each_entry(iocbq, &saveq->list, list) {
+ irsp = &iocbq->iocb;
+ if (irsp->ulpBdeCount != 0) {
+ iocbq->cmd_dmabuf = lpfc_sli_get_buff(phba,
+ pring,
+ irsp->un.ulpWord[3]);
+ if (!iocbq->cmd_dmabuf)
+ lpfc_printf_log(phba,
+ KERN_ERR,
+ LOG_SLI,
+ "0343 Ring %d Cannot find "
+ "buffer for an unsolicited iocb"
+ ". tag 0x%x\n", pring->ringno,
+ irsp->un.ulpWord[3]);
+ }
+ if (irsp->ulpBdeCount == 2) {
+ iocbq->bpl_dmabuf = lpfc_sli_get_buff(phba,
+ pring,
+ irsp->unsli3.sli3Words[7]);
+ if (!iocbq->bpl_dmabuf)
+ lpfc_printf_log(phba,
+ KERN_ERR,
+ LOG_SLI,
+ "0344 Ring %d Cannot find "
+ "buffer for an unsolicited "
+ "iocb. tag 0x%x\n",
+ pring->ringno,
+ irsp->unsli3.sli3Words[7]);
+ }
+ }
+ } else {
+ paddr = getPaddr(irsp->un.cont64[0].addrHigh,
+ irsp->un.cont64[0].addrLow);
+ saveq->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
+ paddr);
+ if (irsp->ulpBdeCount == 2) {
+ paddr = getPaddr(irsp->un.cont64[1].addrHigh,
+ irsp->un.cont64[1].addrLow);
+ saveq->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
+ pring,
+ paddr);
+ }
+ }
+
+ if (irsp->ulpBdeCount != 0 &&
+ (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX ||
+ irsp->ulpStatus == IOSTAT_INTERMED_RSP)) {
+ int found = 0;
+
+ /* search continue save q for same XRI */
+ list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) {
+ if (iocbq->iocb.unsli3.rcvsli3.ox_id ==
+ saveq->iocb.unsli3.rcvsli3.ox_id) {
+ list_add_tail(&saveq->list, &iocbq->list);
+ found = 1;
+ break;
+ }
+ }
+ if (!found)
+ list_add_tail(&saveq->clist,
+ &pring->iocb_continue_saveq);
+
+ if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) {
+ list_del_init(&iocbq->clist);
+ saveq = iocbq;
+ irsp = &saveq->iocb;
+ } else {
+ return 0;
+ }
+ }
+ if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) ||
+ (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) ||
+ (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) {
+ Rctl = FC_RCTL_ELS_REQ;
+ Type = FC_TYPE_ELS;
+ } else {
+ w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]);
+ Rctl = w5p->hcsw.Rctl;
+ Type = w5p->hcsw.Type;
+
+ /* Firmware Workaround */
+ if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
+ (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX ||
+ irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
+ Rctl = FC_RCTL_ELS_REQ;
+ Type = FC_TYPE_ELS;
+ w5p->hcsw.Rctl = Rctl;
+ w5p->hcsw.Type = Type;
+ }
+ }
+
+ if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
+ (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
+ irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
+ if (irsp->unsli3.rcvsli3.vpi == 0xffff)
+ saveq->vport = phba->pport;
+ else
+ saveq->vport = lpfc_find_vport_by_vpid(phba,
+ irsp->unsli3.rcvsli3.vpi);
+ }
+
+ /* Prepare WQE with Unsol frame */
+ lpfc_sli_prep_unsol_wqe(phba, saveq);
+
+ if (!lpfc_complete_unsol_iocb(phba, pring, saveq, Rctl, Type))
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0313 Ring %d handler: unexpected Rctl x%x "
+ "Type x%x received\n",
+ pring->ringno, Rctl, Type);
+
+ return 1;
+}
+
+/**
+ * lpfc_sli_iocbq_lookup - Find command iocb for the given response iocb
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @prspiocb: Pointer to response iocb object.
+ *
+ * This function looks up the iocb_lookup table to get the command iocb
+ * corresponding to the given response iocb using the iotag of the
+ * response iocb. The driver calls this function with the hbalock held
+ * for SLI3 ports or the ring lock held for SLI4 ports.
+ * This function returns the command iocb object if it finds the command
+ * iocb else returns NULL.
+ **/
+static struct lpfc_iocbq *
+lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
+ struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *prspiocb)
+{
+ struct lpfc_iocbq *cmd_iocb = NULL;
+ u16 iotag;
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ iotag = get_wqe_reqtag(prspiocb);
+ else
+ iotag = prspiocb->iocb.ulpIoTag;
+
+ if (iotag != 0 && iotag <= phba->sli.last_iotag) {
+ cmd_iocb = phba->sli.iocbq_lookup[iotag];
+ if (cmd_iocb->cmd_flag & LPFC_IO_ON_TXCMPLQ) {
+ /* remove from txcmpl queue list */
+ list_del_init(&cmd_iocb->list);
+ cmd_iocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
+ pring->txcmplq_cnt--;
+ return cmd_iocb;
+ }
+ }
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0317 iotag x%x is out of "
+ "range: max iotag x%x\n",
+ iotag, phba->sli.last_iotag);
+ return NULL;
+}
+
+/**
+ * lpfc_sli_iocbq_lookup_by_tag - Find command iocb for the iotag
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @iotag: IOCB tag.
+ *
+ * This function looks up the iocb_lookup table to get the command iocb
+ * corresponding to the given iotag. The driver calls this function with
+ * the ring lock held because this function is an SLI4 port only helper.
+ * This function returns the command iocb object if it finds the command
+ * iocb else returns NULL.
+ **/
+static struct lpfc_iocbq *
+lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba,
+ struct lpfc_sli_ring *pring, uint16_t iotag)
+{
+ struct lpfc_iocbq *cmd_iocb = NULL;
+
+ if (iotag != 0 && iotag <= phba->sli.last_iotag) {
+ cmd_iocb = phba->sli.iocbq_lookup[iotag];
+ if (cmd_iocb->cmd_flag & LPFC_IO_ON_TXCMPLQ) {
+ /* remove from txcmpl queue list */
+ list_del_init(&cmd_iocb->list);
+ cmd_iocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
+ pring->txcmplq_cnt--;
+ return cmd_iocb;
+ }
+ }
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0372 iotag x%x lookup error: max iotag (x%x) "
+ "cmd_flag x%x\n",
+ iotag, phba->sli.last_iotag,
+ cmd_iocb ? cmd_iocb->cmd_flag : 0xffff);
+ return NULL;
+}
+
+/**
+ * lpfc_sli_process_sol_iocb - process solicited iocb completion
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @saveq: Pointer to the response iocb to be processed.
+ *
+ * This function is called by the ring event handler for non-fcp
+ * rings when there is a new response iocb in the response ring.
+ * The caller is not required to hold any locks. This function
+ * gets the command iocb associated with the response iocb and
+ * calls the completion handler for the command iocb. If there
+ * is no completion handler, the function will free the resources
+ * associated with command iocb. If the response iocb is for
+ * an already aborted command iocb, the status of the completion
+ * is changed to IOSTAT_LOCAL_REJECT/IOERR_SLI_ABORTED.
+ * This function always returns 1.
+ **/
+static int
+lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *saveq)
+{
+ struct lpfc_iocbq *cmdiocbp;
+ unsigned long iflag;
+ u32 ulp_command, ulp_status, ulp_word4, ulp_context, iotag;
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_lock_irqsave(&pring->ring_lock, iflag);
+ else
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock_irqrestore(&pring->ring_lock, iflag);
+ else
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+
+ ulp_command = get_job_cmnd(phba, saveq);
+ ulp_status = get_job_ulpstatus(phba, saveq);
+ ulp_word4 = get_job_word4(phba, saveq);
+ ulp_context = get_job_ulpcontext(phba, saveq);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ iotag = get_wqe_reqtag(saveq);
+ else
+ iotag = saveq->iocb.ulpIoTag;
+
+ if (cmdiocbp) {
+ ulp_command = get_job_cmnd(phba, cmdiocbp);
+ if (cmdiocbp->cmd_cmpl) {
+ /*
+ * If an ELS command failed send an event to mgmt
+ * application.
+ */
+ if (ulp_status &&
+ (pring->ringno == LPFC_ELS_RING) &&
+ (ulp_command == CMD_ELS_REQUEST64_CR))
+ lpfc_send_els_failure_event(phba,
+ cmdiocbp, saveq);
+
+ /*
+ * Post all ELS completions to the worker thread.
+ * All other are passed to the completion callback.
+ */
+ if (pring->ringno == LPFC_ELS_RING) {
+ if ((phba->sli_rev < LPFC_SLI_REV4) &&
+ (cmdiocbp->cmd_flag &
+ LPFC_DRIVER_ABORTED)) {
+ spin_lock_irqsave(&phba->hbalock,
+ iflag);
+ cmdiocbp->cmd_flag &=
+ ~LPFC_DRIVER_ABORTED;
+ spin_unlock_irqrestore(&phba->hbalock,
+ iflag);
+ saveq->iocb.ulpStatus =
+ IOSTAT_LOCAL_REJECT;
+ saveq->iocb.un.ulpWord[4] =
+ IOERR_SLI_ABORTED;
+
+ /* Firmware could still be in progress
+ * of DMAing payload, so don't free data
+ * buffer till after a hbeat.
+ */
+ spin_lock_irqsave(&phba->hbalock,
+ iflag);
+ saveq->cmd_flag |= LPFC_DELAY_MEM_FREE;
+ spin_unlock_irqrestore(&phba->hbalock,
+ iflag);
+ }
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ if (saveq->cmd_flag &
+ LPFC_EXCHANGE_BUSY) {
+ /* Set cmdiocb flag for the
+ * exchange busy so sgl (xri)
+ * will not be released until
+ * the abort xri is received
+ * from hba.
+ */
+ spin_lock_irqsave(
+ &phba->hbalock, iflag);
+ cmdiocbp->cmd_flag |=
+ LPFC_EXCHANGE_BUSY;
+ spin_unlock_irqrestore(
+ &phba->hbalock, iflag);
+ }
+ if (cmdiocbp->cmd_flag &
+ LPFC_DRIVER_ABORTED) {
+ /*
+ * Clear LPFC_DRIVER_ABORTED
+ * bit in case it was driver
+ * initiated abort.
+ */
+ spin_lock_irqsave(
+ &phba->hbalock, iflag);
+ cmdiocbp->cmd_flag &=
+ ~LPFC_DRIVER_ABORTED;
+ spin_unlock_irqrestore(
+ &phba->hbalock, iflag);
+ set_job_ulpstatus(cmdiocbp,
+ IOSTAT_LOCAL_REJECT);
+ set_job_ulpword4(cmdiocbp,
+ IOERR_ABORT_REQUESTED);
+ /*
+ * For SLI4, irspiocb contains
+ * NO_XRI in sli_xritag, it
+ * shall not affect releasing
+ * sgl (xri) process.
+ */
+ set_job_ulpstatus(saveq,
+ IOSTAT_LOCAL_REJECT);
+ set_job_ulpword4(saveq,
+ IOERR_SLI_ABORTED);
+ spin_lock_irqsave(
+ &phba->hbalock, iflag);
+ saveq->cmd_flag |=
+ LPFC_DELAY_MEM_FREE;
+ spin_unlock_irqrestore(
+ &phba->hbalock, iflag);
+ }
+ }
+ }
+ cmdiocbp->cmd_cmpl(phba, cmdiocbp, saveq);
+ } else
+ lpfc_sli_release_iocbq(phba, cmdiocbp);
+ } else {
+ /*
+ * Unknown initiating command based on the response iotag.
+ * This could be the case on the ELS ring because of
+ * lpfc_els_abort().
+ */
+ if (pring->ringno != LPFC_ELS_RING) {
+ /*
+ * Ring <ringno> handler: unexpected completion IoTag
+ * <IoTag>
+ */
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0322 Ring %d handler: "
+ "unexpected completion IoTag x%x "
+ "Data: x%x x%x x%x x%x\n",
+ pring->ringno, iotag, ulp_status,
+ ulp_word4, ulp_command, ulp_context);
+ }
+ }
+
+ return 1;
+}
+
+/**
+ * lpfc_sli_rsp_pointers_error - Response ring pointer error handler
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ *
+ * This function is called from the iocb ring event handlers when
+ * put pointer is ahead of the get pointer for a ring. This function signal
+ * an error attention condition to the worker thread and the worker
+ * thread will transition the HBA to offline state.
+ **/
+static void
+lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
+{
+ struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
+ /*
+ * Ring <ringno> handler: portRspPut <portRspPut> is bigger than
+ * rsp ring <portRspMax>
+ */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0312 Ring %d handler: portRspPut %d "
+ "is bigger than rsp ring %d\n",
+ pring->ringno, le32_to_cpu(pgp->rspPutInx),
+ pring->sli.sli3.numRiocb);
+
+ phba->link_state = LPFC_HBA_ERROR;
+
+ /*
+ * All error attention handlers are posted to
+ * worker thread
+ */
+ phba->work_ha |= HA_ERATT;
+ phba->work_hs = HS_FFER3;
+
+ lpfc_worker_wake_up(phba);
+
+ return;
+}
+
+/**
+ * lpfc_poll_eratt - Error attention polling timer timeout handler
+ * @t: Context to fetch pointer to address of HBA context object from.
+ *
+ * This function is invoked by the Error Attention polling timer when the
+ * timer times out. It will check the SLI Error Attention register for
+ * possible attention events. If so, it will post an Error Attention event
+ * and wake up worker thread to process it. Otherwise, it will set up the
+ * Error Attention polling timer for the next poll.
+ **/
+void lpfc_poll_eratt(struct timer_list *t)
+{
+ struct lpfc_hba *phba;
+ uint32_t eratt = 0;
+ uint64_t sli_intr, cnt;
+
+ phba = from_timer(phba, t, eratt_poll);
+ if (!(phba->hba_flag & HBA_SETUP))
+ return;
+
+ /* Here we will also keep track of interrupts per sec of the hba */
+ sli_intr = phba->sli.slistat.sli_intr;
+
+ if (phba->sli.slistat.sli_prev_intr > sli_intr)
+ cnt = (((uint64_t)(-1) - phba->sli.slistat.sli_prev_intr) +
+ sli_intr);
+ else
+ cnt = (sli_intr - phba->sli.slistat.sli_prev_intr);
+
+ /* 64-bit integer division not supported on 32-bit x86 - use do_div */
+ do_div(cnt, phba->eratt_poll_interval);
+ phba->sli.slistat.sli_ips = cnt;
+
+ phba->sli.slistat.sli_prev_intr = sli_intr;
+
+ /* Check chip HA register for error event */
+ eratt = lpfc_sli_check_eratt(phba);
+
+ if (eratt)
+ /* Tell the worker thread there is work to do */
+ lpfc_worker_wake_up(phba);
+ else
+ /* Restart the timer for next eratt poll */
+ mod_timer(&phba->eratt_poll,
+ jiffies +
+ msecs_to_jiffies(1000 * phba->eratt_poll_interval));
+ return;
+}
+
+
+/**
+ * lpfc_sli_handle_fast_ring_event - Handle ring events on FCP ring
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @mask: Host attention register mask for this ring.
+ *
+ * This function is called from the interrupt context when there is a ring
+ * event for the fcp ring. The caller does not hold any lock.
+ * The function processes each response iocb in the response ring until it
+ * finds an iocb with LE bit set and chains all the iocbs up to the iocb with
+ * LE bit set. The function will call the completion handler of the command iocb
+ * if the response iocb indicates a completion for a command iocb or it is
+ * an abort completion. The function will call lpfc_sli_process_unsol_iocb
+ * function if this is an unsolicited iocb.
+ * This routine presumes LPFC_FCP_RING handling and doesn't bother
+ * to check it explicitly.
+ */
+int
+lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
+ struct lpfc_sli_ring *pring, uint32_t mask)
+{
+ struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
+ IOCB_t *irsp = NULL;
+ IOCB_t *entry = NULL;
+ struct lpfc_iocbq *cmdiocbq = NULL;
+ struct lpfc_iocbq rspiocbq;
+ uint32_t status;
+ uint32_t portRspPut, portRspMax;
+ int rc = 1;
+ lpfc_iocb_type type;
+ unsigned long iflag;
+ uint32_t rsp_cmpl = 0;
+
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ pring->stats.iocb_event++;
+
+ /*
+ * The next available response entry should never exceed the maximum
+ * entries. If it does, treat it as an adapter hardware error.
+ */
+ portRspMax = pring->sli.sli3.numRiocb;
+ portRspPut = le32_to_cpu(pgp->rspPutInx);
+ if (unlikely(portRspPut >= portRspMax)) {
+ lpfc_sli_rsp_pointers_error(phba, pring);
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return 1;
+ }
+ if (phba->fcp_ring_in_use) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return 1;
+ } else
+ phba->fcp_ring_in_use = 1;
+
+ rmb();
+ while (pring->sli.sli3.rspidx != portRspPut) {
+ /*
+ * Fetch an entry off the ring and copy it into a local data
+ * structure. The copy involves a byte-swap since the
+ * network byte order and pci byte orders are different.
+ */
+ entry = lpfc_resp_iocb(phba, pring);
+ phba->last_completion_time = jiffies;
+
+ if (++pring->sli.sli3.rspidx >= portRspMax)
+ pring->sli.sli3.rspidx = 0;
+
+ lpfc_sli_pcimem_bcopy((uint32_t *) entry,
+ (uint32_t *) &rspiocbq.iocb,
+ phba->iocb_rsp_size);
+ INIT_LIST_HEAD(&(rspiocbq.list));
+ irsp = &rspiocbq.iocb;
+
+ type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
+ pring->stats.iocb_rsp++;
+ rsp_cmpl++;
+
+ if (unlikely(irsp->ulpStatus)) {
+ /*
+ * If resource errors reported from HBA, reduce
+ * queuedepths of the SCSI device.
+ */
+ if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
+ ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
+ IOERR_NO_RESOURCES)) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ phba->lpfc_rampdown_queue_depth(phba);
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ }
+
+ /* Rsp ring <ringno> error: IOCB */
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0336 Rsp Ring %d error: IOCB Data: "
+ "x%x x%x x%x x%x x%x x%x x%x x%x\n",
+ pring->ringno,
+ irsp->un.ulpWord[0],
+ irsp->un.ulpWord[1],
+ irsp->un.ulpWord[2],
+ irsp->un.ulpWord[3],
+ irsp->un.ulpWord[4],
+ irsp->un.ulpWord[5],
+ *(uint32_t *)&irsp->un1,
+ *((uint32_t *)&irsp->un1 + 1));
+ }
+
+ switch (type) {
+ case LPFC_ABORT_IOCB:
+ case LPFC_SOL_IOCB:
+ /*
+ * Idle exchange closed via ABTS from port. No iocb
+ * resources need to be recovered.
+ */
+ if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0333 IOCB cmd 0x%x"
+ " processed. Skipping"
+ " completion\n",
+ irsp->ulpCommand);
+ break;
+ }
+
+ cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
+ &rspiocbq);
+ if (unlikely(!cmdiocbq))
+ break;
+ if (cmdiocbq->cmd_flag & LPFC_DRIVER_ABORTED)
+ cmdiocbq->cmd_flag &= ~LPFC_DRIVER_ABORTED;
+ if (cmdiocbq->cmd_cmpl) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ cmdiocbq->cmd_cmpl(phba, cmdiocbq, &rspiocbq);
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ }
+ break;
+ case LPFC_UNSOL_IOCB:
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ break;
+ default:
+ if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
+ char adaptermsg[LPFC_MAX_ADPTMSG];
+ memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
+ memcpy(&adaptermsg[0], (uint8_t *) irsp,
+ MAX_MSG_DATA);
+ dev_warn(&((phba->pcidev)->dev),
+ "lpfc%d: %s\n",
+ phba->brd_no, adaptermsg);
+ } else {
+ /* Unknown IOCB command */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0334 Unknown IOCB command "
+ "Data: x%x, x%x x%x x%x x%x\n",
+ type, irsp->ulpCommand,
+ irsp->ulpStatus,
+ irsp->ulpIoTag,
+ irsp->ulpContext);
+ }
+ break;
+ }
+
+ /*
+ * The response IOCB has been processed. Update the ring
+ * pointer in SLIM. If the port response put pointer has not
+ * been updated, sync the pgp->rspPutInx and fetch the new port
+ * response put pointer.
+ */
+ writel(pring->sli.sli3.rspidx,
+ &phba->host_gp[pring->ringno].rspGetInx);
+
+ if (pring->sli.sli3.rspidx == portRspPut)
+ portRspPut = le32_to_cpu(pgp->rspPutInx);
+ }
+
+ if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
+ pring->stats.iocb_rsp_full++;
+ status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
+ writel(status, phba->CAregaddr);
+ readl(phba->CAregaddr);
+ }
+ if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
+ pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
+ pring->stats.iocb_cmd_empty++;
+
+ /* Force update of the local copy of cmdGetInx */
+ pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx);
+ lpfc_sli_resume_iocb(phba, pring);
+
+ if ((pring->lpfc_sli_cmd_available))
+ (pring->lpfc_sli_cmd_available) (phba, pring);
+
+ }
+
+ phba->fcp_ring_in_use = 0;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return rc;
+}
+
+/**
+ * lpfc_sli_sp_handle_rspiocb - Handle slow-path response iocb
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @rspiocbp: Pointer to driver response IOCB object.
+ *
+ * This function is called from the worker thread when there is a slow-path
+ * response IOCB to process. This function chains all the response iocbs until
+ * seeing the iocb with the LE bit set. The function will call
+ * lpfc_sli_process_sol_iocb function if the response iocb indicates a
+ * completion of a command iocb. The function will call the
+ * lpfc_sli_process_unsol_iocb function if this is an unsolicited iocb.
+ * The function frees the resources or calls the completion handler if this
+ * iocb is an abort completion. The function returns NULL when the response
+ * iocb has the LE bit set and all the chained iocbs are processed, otherwise
+ * this function shall chain the iocb on to the iocb_continueq and return the
+ * response iocb passed in.
+ **/
+static struct lpfc_iocbq *
+lpfc_sli_sp_handle_rspiocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *rspiocbp)
+{
+ struct lpfc_iocbq *saveq;
+ struct lpfc_iocbq *cmdiocb;
+ struct lpfc_iocbq *next_iocb;
+ IOCB_t *irsp;
+ uint32_t free_saveq;
+ u8 cmd_type;
+ lpfc_iocb_type type;
+ unsigned long iflag;
+ u32 ulp_status = get_job_ulpstatus(phba, rspiocbp);
+ u32 ulp_word4 = get_job_word4(phba, rspiocbp);
+ u32 ulp_command = get_job_cmnd(phba, rspiocbp);
+ int rc;
+
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ /* First add the response iocb to the countinueq list */
+ list_add_tail(&rspiocbp->list, &pring->iocb_continueq);
+ pring->iocb_continueq_cnt++;
+
+ /*
+ * By default, the driver expects to free all resources
+ * associated with this iocb completion.
+ */
+ free_saveq = 1;
+ saveq = list_get_first(&pring->iocb_continueq,
+ struct lpfc_iocbq, list);
+ list_del_init(&pring->iocb_continueq);
+ pring->iocb_continueq_cnt = 0;
+
+ pring->stats.iocb_rsp++;
+
+ /*
+ * If resource errors reported from HBA, reduce
+ * queuedepths of the SCSI device.
+ */
+ if (ulp_status == IOSTAT_LOCAL_REJECT &&
+ ((ulp_word4 & IOERR_PARAM_MASK) ==
+ IOERR_NO_RESOURCES)) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ phba->lpfc_rampdown_queue_depth(phba);
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ }
+
+ if (ulp_status) {
+ /* Rsp ring <ringno> error: IOCB */
+ if (phba->sli_rev < LPFC_SLI_REV4) {
+ irsp = &rspiocbp->iocb;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0328 Rsp Ring %d error: ulp_status x%x "
+ "IOCB Data: "
+ "x%08x x%08x x%08x x%08x "
+ "x%08x x%08x x%08x x%08x "
+ "x%08x x%08x x%08x x%08x "
+ "x%08x x%08x x%08x x%08x\n",
+ pring->ringno, ulp_status,
+ get_job_ulpword(rspiocbp, 0),
+ get_job_ulpword(rspiocbp, 1),
+ get_job_ulpword(rspiocbp, 2),
+ get_job_ulpword(rspiocbp, 3),
+ get_job_ulpword(rspiocbp, 4),
+ get_job_ulpword(rspiocbp, 5),
+ *(((uint32_t *)irsp) + 6),
+ *(((uint32_t *)irsp) + 7),
+ *(((uint32_t *)irsp) + 8),
+ *(((uint32_t *)irsp) + 9),
+ *(((uint32_t *)irsp) + 10),
+ *(((uint32_t *)irsp) + 11),
+ *(((uint32_t *)irsp) + 12),
+ *(((uint32_t *)irsp) + 13),
+ *(((uint32_t *)irsp) + 14),
+ *(((uint32_t *)irsp) + 15));
+ } else {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0321 Rsp Ring %d error: "
+ "IOCB Data: "
+ "x%x x%x x%x x%x\n",
+ pring->ringno,
+ rspiocbp->wcqe_cmpl.word0,
+ rspiocbp->wcqe_cmpl.total_data_placed,
+ rspiocbp->wcqe_cmpl.parameter,
+ rspiocbp->wcqe_cmpl.word3);
+ }
+ }
+
+
+ /*
+ * Fetch the iocb command type and call the correct completion
+ * routine. Solicited and Unsolicited IOCBs on the ELS ring
+ * get freed back to the lpfc_iocb_list by the discovery
+ * kernel thread.
+ */
+ cmd_type = ulp_command & CMD_IOCB_MASK;
+ type = lpfc_sli_iocb_cmd_type(cmd_type);
+ switch (type) {
+ case LPFC_SOL_IOCB:
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ rc = lpfc_sli_process_sol_iocb(phba, pring, saveq);
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ break;
+ case LPFC_UNSOL_IOCB:
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ rc = lpfc_sli_process_unsol_iocb(phba, pring, saveq);
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ if (!rc)
+ free_saveq = 0;
+ break;
+ case LPFC_ABORT_IOCB:
+ cmdiocb = NULL;
+ if (ulp_command != CMD_XRI_ABORTED_CX)
+ cmdiocb = lpfc_sli_iocbq_lookup(phba, pring,
+ saveq);
+ if (cmdiocb) {
+ /* Call the specified completion routine */
+ if (cmdiocb->cmd_cmpl) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ cmdiocb->cmd_cmpl(phba, cmdiocb, saveq);
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ } else {
+ __lpfc_sli_release_iocbq(phba, cmdiocb);
+ }
+ }
+ break;
+ case LPFC_UNKNOWN_IOCB:
+ if (ulp_command == CMD_ADAPTER_MSG) {
+ char adaptermsg[LPFC_MAX_ADPTMSG];
+
+ memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
+ memcpy(&adaptermsg[0], (uint8_t *)&rspiocbp->wqe,
+ MAX_MSG_DATA);
+ dev_warn(&((phba->pcidev)->dev),
+ "lpfc%d: %s\n",
+ phba->brd_no, adaptermsg);
+ } else {
+ /* Unknown command */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0335 Unknown IOCB "
+ "command Data: x%x "
+ "x%x x%x x%x\n",
+ ulp_command,
+ ulp_status,
+ get_wqe_reqtag(rspiocbp),
+ get_job_ulpcontext(phba, rspiocbp));
+ }
+ break;
+ }
+
+ if (free_saveq) {
+ list_for_each_entry_safe(rspiocbp, next_iocb,
+ &saveq->list, list) {
+ list_del_init(&rspiocbp->list);
+ __lpfc_sli_release_iocbq(phba, rspiocbp);
+ }
+ __lpfc_sli_release_iocbq(phba, saveq);
+ }
+ rspiocbp = NULL;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return rspiocbp;
+}
+
+/**
+ * lpfc_sli_handle_slow_ring_event - Wrapper func for handling slow-path iocbs
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @mask: Host attention register mask for this ring.
+ *
+ * This routine wraps the actual slow_ring event process routine from the
+ * API jump table function pointer from the lpfc_hba struct.
+ **/
+void
+lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
+ struct lpfc_sli_ring *pring, uint32_t mask)
+{
+ phba->lpfc_sli_handle_slow_ring_event(phba, pring, mask);
+}
+
+/**
+ * lpfc_sli_handle_slow_ring_event_s3 - Handle SLI3 ring event for non-FCP rings
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @mask: Host attention register mask for this ring.
+ *
+ * This function is called from the worker thread when there is a ring event
+ * for non-fcp rings. The caller does not hold any lock. The function will
+ * remove each response iocb in the response ring and calls the handle
+ * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
+ **/
+static void
+lpfc_sli_handle_slow_ring_event_s3(struct lpfc_hba *phba,
+ struct lpfc_sli_ring *pring, uint32_t mask)
+{
+ struct lpfc_pgp *pgp;
+ IOCB_t *entry;
+ IOCB_t *irsp = NULL;
+ struct lpfc_iocbq *rspiocbp = NULL;
+ uint32_t portRspPut, portRspMax;
+ unsigned long iflag;
+ uint32_t status;
+
+ pgp = &phba->port_gp[pring->ringno];
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ pring->stats.iocb_event++;
+
+ /*
+ * The next available response entry should never exceed the maximum
+ * entries. If it does, treat it as an adapter hardware error.
+ */
+ portRspMax = pring->sli.sli3.numRiocb;
+ portRspPut = le32_to_cpu(pgp->rspPutInx);
+ if (portRspPut >= portRspMax) {
+ /*
+ * Ring <ringno> handler: portRspPut <portRspPut> is bigger than
+ * rsp ring <portRspMax>
+ */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0303 Ring %d handler: portRspPut %d "
+ "is bigger than rsp ring %d\n",
+ pring->ringno, portRspPut, portRspMax);
+
+ phba->link_state = LPFC_HBA_ERROR;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+
+ phba->work_hs = HS_FFER3;
+ lpfc_handle_eratt(phba);
+
+ return;
+ }
+
+ rmb();
+ while (pring->sli.sli3.rspidx != portRspPut) {
+ /*
+ * Build a completion list and call the appropriate handler.
+ * The process is to get the next available response iocb, get
+ * a free iocb from the list, copy the response data into the
+ * free iocb, insert to the continuation list, and update the
+ * next response index to slim. This process makes response
+ * iocb's in the ring available to DMA as fast as possible but
+ * pays a penalty for a copy operation. Since the iocb is
+ * only 32 bytes, this penalty is considered small relative to
+ * the PCI reads for register values and a slim write. When
+ * the ulpLe field is set, the entire Command has been
+ * received.
+ */
+ entry = lpfc_resp_iocb(phba, pring);
+
+ phba->last_completion_time = jiffies;
+ rspiocbp = __lpfc_sli_get_iocbq(phba);
+ if (rspiocbp == NULL) {
+ printk(KERN_ERR "%s: out of buffers! Failing "
+ "completion.\n", __func__);
+ break;
+ }
+
+ lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb,
+ phba->iocb_rsp_size);
+ irsp = &rspiocbp->iocb;
+
+ if (++pring->sli.sli3.rspidx >= portRspMax)
+ pring->sli.sli3.rspidx = 0;
+
+ if (pring->ringno == LPFC_ELS_RING) {
+ lpfc_debugfs_slow_ring_trc(phba,
+ "IOCB rsp ring: wd4:x%08x wd6:x%08x wd7:x%08x",
+ *(((uint32_t *) irsp) + 4),
+ *(((uint32_t *) irsp) + 6),
+ *(((uint32_t *) irsp) + 7));
+ }
+
+ writel(pring->sli.sli3.rspidx,
+ &phba->host_gp[pring->ringno].rspGetInx);
+
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ /* Handle the response IOCB */
+ rspiocbp = lpfc_sli_sp_handle_rspiocb(phba, pring, rspiocbp);
+ spin_lock_irqsave(&phba->hbalock, iflag);
+
+ /*
+ * If the port response put pointer has not been updated, sync
+ * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
+ * response put pointer.
+ */
+ if (pring->sli.sli3.rspidx == portRspPut) {
+ portRspPut = le32_to_cpu(pgp->rspPutInx);
+ }
+ } /* while (pring->sli.sli3.rspidx != portRspPut) */
+
+ if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) {
+ /* At least one response entry has been freed */
+ pring->stats.iocb_rsp_full++;
+ /* SET RxRE_RSP in Chip Att register */
+ status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
+ writel(status, phba->CAregaddr);
+ readl(phba->CAregaddr); /* flush */
+ }
+ if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
+ pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
+ pring->stats.iocb_cmd_empty++;
+
+ /* Force update of the local copy of cmdGetInx */
+ pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx);
+ lpfc_sli_resume_iocb(phba, pring);
+
+ if ((pring->lpfc_sli_cmd_available))
+ (pring->lpfc_sli_cmd_available) (phba, pring);
+
+ }
+
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return;
+}
+
+/**
+ * lpfc_sli_handle_slow_ring_event_s4 - Handle SLI4 slow-path els events
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @mask: Host attention register mask for this ring.
+ *
+ * This function is called from the worker thread when there is a pending
+ * ELS response iocb on the driver internal slow-path response iocb worker
+ * queue. The caller does not hold any lock. The function will remove each
+ * response iocb from the response worker queue and calls the handle
+ * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
+ **/
+static void
+lpfc_sli_handle_slow_ring_event_s4(struct lpfc_hba *phba,
+ struct lpfc_sli_ring *pring, uint32_t mask)
+{
+ struct lpfc_iocbq *irspiocbq;
+ struct hbq_dmabuf *dmabuf;
+ struct lpfc_cq_event *cq_event;
+ unsigned long iflag;
+ int count = 0;
+
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
+ /* Get the response iocb from the head of work queue */
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ list_remove_head(&phba->sli4_hba.sp_queue_event,
+ cq_event, struct lpfc_cq_event, list);
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+
+ switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
+ case CQE_CODE_COMPL_WQE:
+ irspiocbq = container_of(cq_event, struct lpfc_iocbq,
+ cq_event);
+ /* Translate ELS WCQE to response IOCBQ */
+ irspiocbq = lpfc_sli4_els_preprocess_rspiocbq(phba,
+ irspiocbq);
+ if (irspiocbq)
+ lpfc_sli_sp_handle_rspiocb(phba, pring,
+ irspiocbq);
+ count++;
+ break;
+ case CQE_CODE_RECEIVE:
+ case CQE_CODE_RECEIVE_V1:
+ dmabuf = container_of(cq_event, struct hbq_dmabuf,
+ cq_event);
+ lpfc_sli4_handle_received_buffer(phba, dmabuf);
+ count++;
+ break;
+ default:
+ break;
+ }
+
+ /* Limit the number of events to 64 to avoid soft lockups */
+ if (count == 64)
+ break;
+ }
+}
+
+/**
+ * lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ *
+ * This function aborts all iocbs in the given ring and frees all the iocb
+ * objects in txq. This function issues an abort iocb for all the iocb commands
+ * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before
+ * the return of this function. The caller is not required to hold any locks.
+ **/
+void
+lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
+{
+ LIST_HEAD(tx_completions);
+ LIST_HEAD(txcmplq_completions);
+ struct lpfc_iocbq *iocb, *next_iocb;
+ int offline;
+
+ if (pring->ringno == LPFC_ELS_RING) {
+ lpfc_fabric_abort_hba(phba);
+ }
+ offline = pci_channel_offline(phba->pcidev);
+
+ /* Error everything on txq and txcmplq
+ * First do the txq.
+ */
+ if (phba->sli_rev >= LPFC_SLI_REV4) {
+ spin_lock_irq(&pring->ring_lock);
+ list_splice_init(&pring->txq, &tx_completions);
+ pring->txq_cnt = 0;
+
+ if (offline) {
+ list_splice_init(&pring->txcmplq,
+ &txcmplq_completions);
+ } else {
+ /* Next issue ABTS for everything on the txcmplq */
+ list_for_each_entry_safe(iocb, next_iocb,
+ &pring->txcmplq, list)
+ lpfc_sli_issue_abort_iotag(phba, pring,
+ iocb, NULL);
+ }
+ spin_unlock_irq(&pring->ring_lock);
+ } else {
+ spin_lock_irq(&phba->hbalock);
+ list_splice_init(&pring->txq, &tx_completions);
+ pring->txq_cnt = 0;
+
+ if (offline) {
+ list_splice_init(&pring->txcmplq, &txcmplq_completions);
+ } else {
+ /* Next issue ABTS for everything on the txcmplq */
+ list_for_each_entry_safe(iocb, next_iocb,
+ &pring->txcmplq, list)
+ lpfc_sli_issue_abort_iotag(phba, pring,
+ iocb, NULL);
+ }
+ spin_unlock_irq(&phba->hbalock);
+ }
+
+ if (offline) {
+ /* Cancel all the IOCBs from the completions list */
+ lpfc_sli_cancel_iocbs(phba, &txcmplq_completions,
+ IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
+ } else {
+ /* Make sure HBA is alive */
+ lpfc_issue_hb_tmo(phba);
+ }
+ /* Cancel all the IOCBs from the completions list */
+ lpfc_sli_cancel_iocbs(phba, &tx_completions, IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_ABORTED);
+}
+
+/**
+ * lpfc_sli_abort_fcp_rings - Abort all iocbs in all FCP rings
+ * @phba: Pointer to HBA context object.
+ *
+ * This function aborts all iocbs in FCP rings and frees all the iocb
+ * objects in txq. This function issues an abort iocb for all the iocb commands
+ * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before
+ * the return of this function. The caller is not required to hold any locks.
+ **/
+void
+lpfc_sli_abort_fcp_rings(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_sli_ring *pring;
+ uint32_t i;
+
+ /* Look on all the FCP Rings for the iotag */
+ if (phba->sli_rev >= LPFC_SLI_REV4) {
+ for (i = 0; i < phba->cfg_hdw_queue; i++) {
+ pring = phba->sli4_hba.hdwq[i].io_wq->pring;
+ lpfc_sli_abort_iocb_ring(phba, pring);
+ }
+ } else {
+ pring = &psli->sli3_ring[LPFC_FCP_RING];
+ lpfc_sli_abort_iocb_ring(phba, pring);
+ }
+}
+
+/**
+ * lpfc_sli_flush_io_rings - flush all iocbs in the IO ring
+ * @phba: Pointer to HBA context object.
+ *
+ * This function flushes all iocbs in the IO ring and frees all the iocb
+ * objects in txq and txcmplq. This function will not issue abort iocbs
+ * for all the iocb commands in txcmplq, they will just be returned with
+ * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
+ * slot has been permanently disabled.
+ **/
+void
+lpfc_sli_flush_io_rings(struct lpfc_hba *phba)
+{
+ LIST_HEAD(txq);
+ LIST_HEAD(txcmplq);
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_sli_ring *pring;
+ uint32_t i;
+ struct lpfc_iocbq *piocb, *next_iocb;
+
+ spin_lock_irq(&phba->hbalock);
+ /* Indicate the I/O queues are flushed */
+ phba->hba_flag |= HBA_IOQ_FLUSH;
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Look on all the FCP Rings for the iotag */
+ if (phba->sli_rev >= LPFC_SLI_REV4) {
+ for (i = 0; i < phba->cfg_hdw_queue; i++) {
+ pring = phba->sli4_hba.hdwq[i].io_wq->pring;
+
+ spin_lock_irq(&pring->ring_lock);
+ /* Retrieve everything on txq */
+ list_splice_init(&pring->txq, &txq);
+ list_for_each_entry_safe(piocb, next_iocb,
+ &pring->txcmplq, list)
+ piocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
+ /* Retrieve everything on the txcmplq */
+ list_splice_init(&pring->txcmplq, &txcmplq);
+ pring->txq_cnt = 0;
+ pring->txcmplq_cnt = 0;
+ spin_unlock_irq(&pring->ring_lock);
+
+ /* Flush the txq */
+ lpfc_sli_cancel_iocbs(phba, &txq,
+ IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_DOWN);
+ /* Flush the txcmplq */
+ lpfc_sli_cancel_iocbs(phba, &txcmplq,
+ IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_DOWN);
+ if (unlikely(pci_channel_offline(phba->pcidev)))
+ lpfc_sli4_io_xri_aborted(phba, NULL, 0);
+ }
+ } else {
+ pring = &psli->sli3_ring[LPFC_FCP_RING];
+
+ spin_lock_irq(&phba->hbalock);
+ /* Retrieve everything on txq */
+ list_splice_init(&pring->txq, &txq);
+ list_for_each_entry_safe(piocb, next_iocb,
+ &pring->txcmplq, list)
+ piocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
+ /* Retrieve everything on the txcmplq */
+ list_splice_init(&pring->txcmplq, &txcmplq);
+ pring->txq_cnt = 0;
+ pring->txcmplq_cnt = 0;
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Flush the txq */
+ lpfc_sli_cancel_iocbs(phba, &txq, IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_DOWN);
+ /* Flush the txcmpq */
+ lpfc_sli_cancel_iocbs(phba, &txcmplq, IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_DOWN);
+ }
+}
+
+/**
+ * lpfc_sli_brdready_s3 - Check for sli3 host ready status
+ * @phba: Pointer to HBA context object.
+ * @mask: Bit mask to be checked.
+ *
+ * This function reads the host status register and compares
+ * with the provided bit mask to check if HBA completed
+ * the restart. This function will wait in a loop for the
+ * HBA to complete restart. If the HBA does not restart within
+ * 15 iterations, the function will reset the HBA again. The
+ * function returns 1 when HBA fail to restart otherwise returns
+ * zero.
+ **/
+static int
+lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask)
+{
+ uint32_t status;
+ int i = 0;
+ int retval = 0;
+
+ /* Read the HBA Host Status Register */
+ if (lpfc_readl(phba->HSregaddr, &status))
+ return 1;
+
+ phba->hba_flag |= HBA_NEEDS_CFG_PORT;
+
+ /*
+ * Check status register every 100ms for 5 retries, then every
+ * 500ms for 5, then every 2.5 sec for 5, then reset board and
+ * every 2.5 sec for 4.
+ * Break our of the loop if errors occurred during init.
+ */
+ while (((status & mask) != mask) &&
+ !(status & HS_FFERM) &&
+ i++ < 20) {
+
+ if (i <= 5)
+ msleep(10);
+ else if (i <= 10)
+ msleep(500);
+ else
+ msleep(2500);
+
+ if (i == 15) {
+ /* Do post */
+ phba->pport->port_state = LPFC_VPORT_UNKNOWN;
+ lpfc_sli_brdrestart(phba);
+ }
+ /* Read the HBA Host Status Register */
+ if (lpfc_readl(phba->HSregaddr, &status)) {
+ retval = 1;
+ break;
+ }
+ }
+
+ /* Check to see if any errors occurred during init */
+ if ((status & HS_FFERM) || (i >= 20)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2751 Adapter failed to restart, "
+ "status reg x%x, FW Data: A8 x%x AC x%x\n",
+ status,
+ readl(phba->MBslimaddr + 0xa8),
+ readl(phba->MBslimaddr + 0xac));
+ phba->link_state = LPFC_HBA_ERROR;
+ retval = 1;
+ }
+
+ return retval;
+}
+
+/**
+ * lpfc_sli_brdready_s4 - Check for sli4 host ready status
+ * @phba: Pointer to HBA context object.
+ * @mask: Bit mask to be checked.
+ *
+ * This function checks the host status register to check if HBA is
+ * ready. This function will wait in a loop for the HBA to be ready
+ * If the HBA is not ready , the function will will reset the HBA PCI
+ * function again. The function returns 1 when HBA fail to be ready
+ * otherwise returns zero.
+ **/
+static int
+lpfc_sli_brdready_s4(struct lpfc_hba *phba, uint32_t mask)
+{
+ uint32_t status;
+ int retval = 0;
+
+ /* Read the HBA Host Status Register */
+ status = lpfc_sli4_post_status_check(phba);
+
+ if (status) {
+ phba->pport->port_state = LPFC_VPORT_UNKNOWN;
+ lpfc_sli_brdrestart(phba);
+ status = lpfc_sli4_post_status_check(phba);
+ }
+
+ /* Check to see if any errors occurred during init */
+ if (status) {
+ phba->link_state = LPFC_HBA_ERROR;
+ retval = 1;
+ } else
+ phba->sli4_hba.intr_enable = 0;
+
+ phba->hba_flag &= ~HBA_SETUP;
+ return retval;
+}
+
+/**
+ * lpfc_sli_brdready - Wrapper func for checking the hba readyness
+ * @phba: Pointer to HBA context object.
+ * @mask: Bit mask to be checked.
+ *
+ * This routine wraps the actual SLI3 or SLI4 hba readyness check routine
+ * from the API jump table function pointer from the lpfc_hba struct.
+ **/
+int
+lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
+{
+ return phba->lpfc_sli_brdready(phba, mask);
+}
+
+#define BARRIER_TEST_PATTERN (0xdeadbeef)
+
+/**
+ * lpfc_reset_barrier - Make HBA ready for HBA reset
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called before resetting an HBA. This function is called
+ * with hbalock held and requests HBA to quiesce DMAs before a reset.
+ **/
+void lpfc_reset_barrier(struct lpfc_hba *phba)
+{
+ uint32_t __iomem *resp_buf;
+ uint32_t __iomem *mbox_buf;
+ volatile struct MAILBOX_word0 mbox;
+ uint32_t hc_copy, ha_copy, resp_data;
+ int i;
+ uint8_t hdrtype;
+
+ lockdep_assert_held(&phba->hbalock);
+
+ pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
+ if (hdrtype != 0x80 ||
+ (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
+ FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
+ return;
+
+ /*
+ * Tell the other part of the chip to suspend temporarily all
+ * its DMA activity.
+ */
+ resp_buf = phba->MBslimaddr;
+
+ /* Disable the error attention */
+ if (lpfc_readl(phba->HCregaddr, &hc_copy))
+ return;
+ writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+ phba->link_flag |= LS_IGNORE_ERATT;
+
+ if (lpfc_readl(phba->HAregaddr, &ha_copy))
+ return;
+ if (ha_copy & HA_ERATT) {
+ /* Clear Chip error bit */
+ writel(HA_ERATT, phba->HAregaddr);
+ phba->pport->stopped = 1;
+ }
+
+ mbox.word0 = 0;
+ mbox.mbxCommand = MBX_KILL_BOARD;
+ mbox.mbxOwner = OWN_CHIP;
+
+ writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
+ mbox_buf = phba->MBslimaddr;
+ writel(mbox.word0, mbox_buf);
+
+ for (i = 0; i < 50; i++) {
+ if (lpfc_readl((resp_buf + 1), &resp_data))
+ return;
+ if (resp_data != ~(BARRIER_TEST_PATTERN))
+ mdelay(1);
+ else
+ break;
+ }
+ resp_data = 0;
+ if (lpfc_readl((resp_buf + 1), &resp_data))
+ return;
+ if (resp_data != ~(BARRIER_TEST_PATTERN)) {
+ if (phba->sli.sli_flag & LPFC_SLI_ACTIVE ||
+ phba->pport->stopped)
+ goto restore_hc;
+ else
+ goto clear_errat;
+ }
+
+ mbox.mbxOwner = OWN_HOST;
+ resp_data = 0;
+ for (i = 0; i < 500; i++) {
+ if (lpfc_readl(resp_buf, &resp_data))
+ return;
+ if (resp_data != mbox.word0)
+ mdelay(1);
+ else
+ break;
+ }
+
+clear_errat:
+
+ while (++i < 500) {
+ if (lpfc_readl(phba->HAregaddr, &ha_copy))
+ return;
+ if (!(ha_copy & HA_ERATT))
+ mdelay(1);
+ else
+ break;
+ }
+
+ if (readl(phba->HAregaddr) & HA_ERATT) {
+ writel(HA_ERATT, phba->HAregaddr);
+ phba->pport->stopped = 1;
+ }
+
+restore_hc:
+ phba->link_flag &= ~LS_IGNORE_ERATT;
+ writel(hc_copy, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+}
+
+/**
+ * lpfc_sli_brdkill - Issue a kill_board mailbox command
+ * @phba: Pointer to HBA context object.
+ *
+ * This function issues a kill_board mailbox command and waits for
+ * the error attention interrupt. This function is called for stopping
+ * the firmware processing. The caller is not required to hold any
+ * locks. This function calls lpfc_hba_down_post function to free
+ * any pending commands after the kill. The function will return 1 when it
+ * fails to kill the board else will return 0.
+ **/
+int
+lpfc_sli_brdkill(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli;
+ LPFC_MBOXQ_t *pmb;
+ uint32_t status;
+ uint32_t ha_copy;
+ int retval;
+ int i = 0;
+
+ psli = &phba->sli;
+
+ /* Kill HBA */
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0329 Kill HBA Data: x%x x%x\n",
+ phba->pport->port_state, psli->sli_flag);
+
+ pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!pmb)
+ return 1;
+
+ /* Disable the error attention */
+ spin_lock_irq(&phba->hbalock);
+ if (lpfc_readl(phba->HCregaddr, &status)) {
+ spin_unlock_irq(&phba->hbalock);
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return 1;
+ }
+ status &= ~HC_ERINT_ENA;
+ writel(status, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+ phba->link_flag |= LS_IGNORE_ERATT;
+ spin_unlock_irq(&phba->hbalock);
+
+ lpfc_kill_board(phba, pmb);
+ pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+
+ if (retval != MBX_SUCCESS) {
+ if (retval != MBX_BUSY)
+ mempool_free(pmb, phba->mbox_mem_pool);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2752 KILL_BOARD command failed retval %d\n",
+ retval);
+ spin_lock_irq(&phba->hbalock);
+ phba->link_flag &= ~LS_IGNORE_ERATT;
+ spin_unlock_irq(&phba->hbalock);
+ return 1;
+ }
+
+ spin_lock_irq(&phba->hbalock);
+ psli->sli_flag &= ~LPFC_SLI_ACTIVE;
+ spin_unlock_irq(&phba->hbalock);
+
+ mempool_free(pmb, phba->mbox_mem_pool);
+
+ /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
+ * attention every 100ms for 3 seconds. If we don't get ERATT after
+ * 3 seconds we still set HBA_ERROR state because the status of the
+ * board is now undefined.
+ */
+ if (lpfc_readl(phba->HAregaddr, &ha_copy))
+ return 1;
+ while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
+ mdelay(100);
+ if (lpfc_readl(phba->HAregaddr, &ha_copy))
+ return 1;
+ }
+
+ del_timer_sync(&psli->mbox_tmo);
+ if (ha_copy & HA_ERATT) {
+ writel(HA_ERATT, phba->HAregaddr);
+ phba->pport->stopped = 1;
+ }
+ spin_lock_irq(&phba->hbalock);
+ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ psli->mbox_active = NULL;
+ phba->link_flag &= ~LS_IGNORE_ERATT;
+ spin_unlock_irq(&phba->hbalock);
+
+ lpfc_hba_down_post(phba);
+ phba->link_state = LPFC_HBA_ERROR;
+
+ return ha_copy & HA_ERATT ? 0 : 1;
+}
+
+/**
+ * lpfc_sli_brdreset - Reset a sli-2 or sli-3 HBA
+ * @phba: Pointer to HBA context object.
+ *
+ * This function resets the HBA by writing HC_INITFF to the control
+ * register. After the HBA resets, this function resets all the iocb ring
+ * indices. This function disables PCI layer parity checking during
+ * the reset.
+ * This function returns 0 always.
+ * The caller is not required to hold any locks.
+ **/
+int
+lpfc_sli_brdreset(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli;
+ struct lpfc_sli_ring *pring;
+ uint16_t cfg_value;
+ int i;
+
+ psli = &phba->sli;
+
+ /* Reset HBA */
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0325 Reset HBA Data: x%x x%x\n",
+ (phba->pport) ? phba->pport->port_state : 0,
+ psli->sli_flag);
+
+ /* perform board reset */
+ phba->fc_eventTag = 0;
+ phba->link_events = 0;
+ phba->hba_flag |= HBA_NEEDS_CFG_PORT;
+ if (phba->pport) {
+ phba->pport->fc_myDID = 0;
+ phba->pport->fc_prevDID = 0;
+ }
+
+ /* Turn off parity checking and serr during the physical reset */
+ if (pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value))
+ return -EIO;
+
+ pci_write_config_word(phba->pcidev, PCI_COMMAND,
+ (cfg_value &
+ ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
+
+ psli->sli_flag &= ~(LPFC_SLI_ACTIVE | LPFC_PROCESS_LA);
+
+ /* Now toggle INITFF bit in the Host Control Register */
+ writel(HC_INITFF, phba->HCregaddr);
+ mdelay(1);
+ readl(phba->HCregaddr); /* flush */
+ writel(0, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+
+ /* Restore PCI cmd register */
+ pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
+
+ /* Initialize relevant SLI info */
+ for (i = 0; i < psli->num_rings; i++) {
+ pring = &psli->sli3_ring[i];
+ pring->flag = 0;
+ pring->sli.sli3.rspidx = 0;
+ pring->sli.sli3.next_cmdidx = 0;
+ pring->sli.sli3.local_getidx = 0;
+ pring->sli.sli3.cmdidx = 0;
+ pring->missbufcnt = 0;
+ }
+
+ phba->link_state = LPFC_WARM_START;
+ return 0;
+}
+
+/**
+ * lpfc_sli4_brdreset - Reset a sli-4 HBA
+ * @phba: Pointer to HBA context object.
+ *
+ * This function resets a SLI4 HBA. This function disables PCI layer parity
+ * checking during resets the device. The caller is not required to hold
+ * any locks.
+ *
+ * This function returns 0 on success else returns negative error code.
+ **/
+int
+lpfc_sli4_brdreset(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ uint16_t cfg_value;
+ int rc = 0;
+
+ /* Reset HBA */
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0295 Reset HBA Data: x%x x%x x%x\n",
+ phba->pport->port_state, psli->sli_flag,
+ phba->hba_flag);
+
+ /* perform board reset */
+ phba->fc_eventTag = 0;
+ phba->link_events = 0;
+ phba->pport->fc_myDID = 0;
+ phba->pport->fc_prevDID = 0;
+ phba->hba_flag &= ~HBA_SETUP;
+
+ spin_lock_irq(&phba->hbalock);
+ psli->sli_flag &= ~(LPFC_PROCESS_LA);
+ phba->fcf.fcf_flag = 0;
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Now physically reset the device */
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "0389 Performing PCI function reset!\n");
+
+ /* Turn off parity checking and serr during the physical reset */
+ if (pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value)) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "3205 PCI read Config failed\n");
+ return -EIO;
+ }
+
+ pci_write_config_word(phba->pcidev, PCI_COMMAND, (cfg_value &
+ ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
+
+ /* Perform FCoE PCI function reset before freeing queue memory */
+ rc = lpfc_pci_function_reset(phba);
+
+ /* Restore PCI cmd register */
+ pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
+
+ return rc;
+}
+
+/**
+ * lpfc_sli_brdrestart_s3 - Restart a sli-3 hba
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called in the SLI initialization code path to
+ * restart the HBA. The caller is not required to hold any lock.
+ * This function writes MBX_RESTART mailbox command to the SLIM and
+ * resets the HBA. At the end of the function, it calls lpfc_hba_down_post
+ * function to free any pending commands. The function enables
+ * POST only during the first initialization. The function returns zero.
+ * The function does not guarantee completion of MBX_RESTART mailbox
+ * command before the return of this function.
+ **/
+static int
+lpfc_sli_brdrestart_s3(struct lpfc_hba *phba)
+{
+ volatile struct MAILBOX_word0 mb;
+ struct lpfc_sli *psli;
+ void __iomem *to_slim;
+ uint32_t hba_aer_enabled;
+
+ spin_lock_irq(&phba->hbalock);
+
+ /* Take PCIe device Advanced Error Reporting (AER) state */
+ hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED;
+
+ psli = &phba->sli;
+
+ /* Restart HBA */
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0337 Restart HBA Data: x%x x%x\n",
+ (phba->pport) ? phba->pport->port_state : 0,
+ psli->sli_flag);
+
+ mb.word0 = 0;
+ mb.mbxCommand = MBX_RESTART;
+ mb.mbxHc = 1;
+
+ lpfc_reset_barrier(phba);
+
+ to_slim = phba->MBslimaddr;
+ writel(mb.word0, to_slim);
+ readl(to_slim); /* flush */
+
+ /* Only skip post after fc_ffinit is completed */
+ if (phba->pport && phba->pport->port_state)
+ mb.word0 = 1; /* This is really setting up word1 */
+ else
+ mb.word0 = 0; /* This is really setting up word1 */
+ to_slim = phba->MBslimaddr + sizeof (uint32_t);
+ writel(mb.word0, to_slim);
+ readl(to_slim); /* flush */
+
+ lpfc_sli_brdreset(phba);
+ if (phba->pport)
+ phba->pport->stopped = 0;
+ phba->link_state = LPFC_INIT_START;
+ phba->hba_flag = 0;
+ spin_unlock_irq(&phba->hbalock);
+
+ memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
+ psli->stats_start = ktime_get_seconds();
+
+ /* Give the INITFF and Post time to settle. */
+ mdelay(100);
+
+ /* Reset HBA AER if it was enabled, note hba_flag was reset above */
+ if (hba_aer_enabled)
+ pci_disable_pcie_error_reporting(phba->pcidev);
+
+ lpfc_hba_down_post(phba);
+
+ return 0;
+}
+
+/**
+ * lpfc_sli_brdrestart_s4 - Restart the sli-4 hba
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called in the SLI initialization code path to restart
+ * a SLI4 HBA. The caller is not required to hold any lock.
+ * At the end of the function, it calls lpfc_hba_down_post function to
+ * free any pending commands.
+ **/
+static int
+lpfc_sli_brdrestart_s4(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ uint32_t hba_aer_enabled;
+ int rc;
+
+ /* Restart HBA */
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0296 Restart HBA Data: x%x x%x\n",
+ phba->pport->port_state, psli->sli_flag);
+
+ /* Take PCIe device Advanced Error Reporting (AER) state */
+ hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED;
+
+ rc = lpfc_sli4_brdreset(phba);
+ if (rc) {
+ phba->link_state = LPFC_HBA_ERROR;
+ goto hba_down_queue;
+ }
+
+ spin_lock_irq(&phba->hbalock);
+ phba->pport->stopped = 0;
+ phba->link_state = LPFC_INIT_START;
+ phba->hba_flag = 0;
+ /* Preserve FA-PWWN expectation */
+ phba->sli4_hba.fawwpn_flag &= LPFC_FAWWPN_FABRIC;
+ spin_unlock_irq(&phba->hbalock);
+
+ memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
+ psli->stats_start = ktime_get_seconds();
+
+ /* Reset HBA AER if it was enabled, note hba_flag was reset above */
+ if (hba_aer_enabled)
+ pci_disable_pcie_error_reporting(phba->pcidev);
+
+hba_down_queue:
+ lpfc_hba_down_post(phba);
+ lpfc_sli4_queue_destroy(phba);
+
+ return rc;
+}
+
+/**
+ * lpfc_sli_brdrestart - Wrapper func for restarting hba
+ * @phba: Pointer to HBA context object.
+ *
+ * This routine wraps the actual SLI3 or SLI4 hba restart routine from the
+ * API jump table function pointer from the lpfc_hba struct.
+**/
+int
+lpfc_sli_brdrestart(struct lpfc_hba *phba)
+{
+ return phba->lpfc_sli_brdrestart(phba);
+}
+
+/**
+ * lpfc_sli_chipset_init - Wait for the restart of the HBA after a restart
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called after a HBA restart to wait for successful
+ * restart of the HBA. Successful restart of the HBA is indicated by
+ * HS_FFRDY and HS_MBRDY bits. If the HBA fails to restart even after 15
+ * iteration, the function will restart the HBA again. The function returns
+ * zero if HBA successfully restarted else returns negative error code.
+ **/
+int
+lpfc_sli_chipset_init(struct lpfc_hba *phba)
+{
+ uint32_t status, i = 0;
+
+ /* Read the HBA Host Status Register */
+ if (lpfc_readl(phba->HSregaddr, &status))
+ return -EIO;
+
+ /* Check status register to see what current state is */
+ i = 0;
+ while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
+
+ /* Check every 10ms for 10 retries, then every 100ms for 90
+ * retries, then every 1 sec for 50 retires for a total of
+ * ~60 seconds before reset the board again and check every
+ * 1 sec for 50 retries. The up to 60 seconds before the
+ * board ready is required by the Falcon FIPS zeroization
+ * complete, and any reset the board in between shall cause
+ * restart of zeroization, further delay the board ready.
+ */
+ if (i++ >= 200) {
+ /* Adapter failed to init, timeout, status reg
+ <status> */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0436 Adapter failed to init, "
+ "timeout, status reg x%x, "
+ "FW Data: A8 x%x AC x%x\n", status,
+ readl(phba->MBslimaddr + 0xa8),
+ readl(phba->MBslimaddr + 0xac));
+ phba->link_state = LPFC_HBA_ERROR;
+ return -ETIMEDOUT;
+ }
+
+ /* Check to see if any errors occurred during init */
+ if (status & HS_FFERM) {
+ /* ERROR: During chipset initialization */
+ /* Adapter failed to init, chipset, status reg
+ <status> */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0437 Adapter failed to init, "
+ "chipset, status reg x%x, "
+ "FW Data: A8 x%x AC x%x\n", status,
+ readl(phba->MBslimaddr + 0xa8),
+ readl(phba->MBslimaddr + 0xac));
+ phba->link_state = LPFC_HBA_ERROR;
+ return -EIO;
+ }
+
+ if (i <= 10)
+ msleep(10);
+ else if (i <= 100)
+ msleep(100);
+ else
+ msleep(1000);
+
+ if (i == 150) {
+ /* Do post */
+ phba->pport->port_state = LPFC_VPORT_UNKNOWN;
+ lpfc_sli_brdrestart(phba);
+ }
+ /* Read the HBA Host Status Register */
+ if (lpfc_readl(phba->HSregaddr, &status))
+ return -EIO;
+ }
+
+ /* Check to see if any errors occurred during init */
+ if (status & HS_FFERM) {
+ /* ERROR: During chipset initialization */
+ /* Adapter failed to init, chipset, status reg <status> */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0438 Adapter failed to init, chipset, "
+ "status reg x%x, "
+ "FW Data: A8 x%x AC x%x\n", status,
+ readl(phba->MBslimaddr + 0xa8),
+ readl(phba->MBslimaddr + 0xac));
+ phba->link_state = LPFC_HBA_ERROR;
+ return -EIO;
+ }
+
+ phba->hba_flag |= HBA_NEEDS_CFG_PORT;
+
+ /* Clear all interrupt enable conditions */
+ writel(0, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+
+ /* setup host attn register */
+ writel(0xffffffff, phba->HAregaddr);
+ readl(phba->HAregaddr); /* flush */
+ return 0;
+}
+
+/**
+ * lpfc_sli_hbq_count - Get the number of HBQs to be configured
+ *
+ * This function calculates and returns the number of HBQs required to be
+ * configured.
+ **/
+int
+lpfc_sli_hbq_count(void)
+{
+ return ARRAY_SIZE(lpfc_hbq_defs);
+}
+
+/**
+ * lpfc_sli_hbq_entry_count - Calculate total number of hbq entries
+ *
+ * This function adds the number of hbq entries in every HBQ to get
+ * the total number of hbq entries required for the HBA and returns
+ * the total count.
+ **/
+static int
+lpfc_sli_hbq_entry_count(void)
+{
+ int hbq_count = lpfc_sli_hbq_count();
+ int count = 0;
+ int i;
+
+ for (i = 0; i < hbq_count; ++i)
+ count += lpfc_hbq_defs[i]->entry_count;
+ return count;
+}
+
+/**
+ * lpfc_sli_hbq_size - Calculate memory required for all hbq entries
+ *
+ * This function calculates amount of memory required for all hbq entries
+ * to be configured and returns the total memory required.
+ **/
+int
+lpfc_sli_hbq_size(void)
+{
+ return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry);
+}
+
+/**
+ * lpfc_sli_hbq_setup - configure and initialize HBQs
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called during the SLI initialization to configure
+ * all the HBQs and post buffers to the HBQ. The caller is not
+ * required to hold any locks. This function will return zero if successful
+ * else it will return negative error code.
+ **/
+static int
+lpfc_sli_hbq_setup(struct lpfc_hba *phba)
+{
+ int hbq_count = lpfc_sli_hbq_count();
+ LPFC_MBOXQ_t *pmb;
+ MAILBOX_t *pmbox;
+ uint32_t hbqno;
+ uint32_t hbq_entry_index;
+
+ /* Get a Mailbox buffer to setup mailbox
+ * commands for HBA initialization
+ */
+ pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+
+ if (!pmb)
+ return -ENOMEM;
+
+ pmbox = &pmb->u.mb;
+
+ /* Initialize the struct lpfc_sli_hbq structure for each hbq */
+ phba->link_state = LPFC_INIT_MBX_CMDS;
+ phba->hbq_in_use = 1;
+
+ hbq_entry_index = 0;
+ for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
+ phba->hbqs[hbqno].next_hbqPutIdx = 0;
+ phba->hbqs[hbqno].hbqPutIdx = 0;
+ phba->hbqs[hbqno].local_hbqGetIdx = 0;
+ phba->hbqs[hbqno].entry_count =
+ lpfc_hbq_defs[hbqno]->entry_count;
+ lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno],
+ hbq_entry_index, pmb);
+ hbq_entry_index += phba->hbqs[hbqno].entry_count;
+
+ if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
+ /* Adapter failed to init, mbxCmd <cmd> CFG_RING,
+ mbxStatus <status>, ring <num> */
+
+ lpfc_printf_log(phba, KERN_ERR,
+ LOG_SLI | LOG_VPORT,
+ "1805 Adapter failed to init. "
+ "Data: x%x x%x x%x\n",
+ pmbox->mbxCommand,
+ pmbox->mbxStatus, hbqno);
+
+ phba->link_state = LPFC_HBA_ERROR;
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return -ENXIO;
+ }
+ }
+ phba->hbq_count = hbq_count;
+
+ mempool_free(pmb, phba->mbox_mem_pool);
+
+ /* Initially populate or replenish the HBQs */
+ for (hbqno = 0; hbqno < hbq_count; ++hbqno)
+ lpfc_sli_hbqbuf_init_hbqs(phba, hbqno);
+ return 0;
+}
+
+/**
+ * lpfc_sli4_rb_setup - Initialize and post RBs to HBA
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called during the SLI initialization to configure
+ * all the HBQs and post buffers to the HBQ. The caller is not
+ * required to hold any locks. This function will return zero if successful
+ * else it will return negative error code.
+ **/
+static int
+lpfc_sli4_rb_setup(struct lpfc_hba *phba)
+{
+ phba->hbq_in_use = 1;
+ /**
+ * Specific case when the MDS diagnostics is enabled and supported.
+ * The receive buffer count is truncated to manage the incoming
+ * traffic.
+ **/
+ if (phba->cfg_enable_mds_diags && phba->mds_diags_support)
+ phba->hbqs[LPFC_ELS_HBQ].entry_count =
+ lpfc_hbq_defs[LPFC_ELS_HBQ]->entry_count >> 1;
+ else
+ phba->hbqs[LPFC_ELS_HBQ].entry_count =
+ lpfc_hbq_defs[LPFC_ELS_HBQ]->entry_count;
+ phba->hbq_count = 1;
+ lpfc_sli_hbqbuf_init_hbqs(phba, LPFC_ELS_HBQ);
+ /* Initially populate or replenish the HBQs */
+ return 0;
+}
+
+/**
+ * lpfc_sli_config_port - Issue config port mailbox command
+ * @phba: Pointer to HBA context object.
+ * @sli_mode: sli mode - 2/3
+ *
+ * This function is called by the sli initialization code path
+ * to issue config_port mailbox command. This function restarts the
+ * HBA firmware and issues a config_port mailbox command to configure
+ * the SLI interface in the sli mode specified by sli_mode
+ * variable. The caller is not required to hold any locks.
+ * The function returns 0 if successful, else returns negative error
+ * code.
+ **/
+int
+lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode)
+{
+ LPFC_MBOXQ_t *pmb;
+ uint32_t resetcount = 0, rc = 0, done = 0;
+
+ pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!pmb) {
+ phba->link_state = LPFC_HBA_ERROR;
+ return -ENOMEM;
+ }
+
+ phba->sli_rev = sli_mode;
+ while (resetcount < 2 && !done) {
+ spin_lock_irq(&phba->hbalock);
+ phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
+ spin_unlock_irq(&phba->hbalock);
+ phba->pport->port_state = LPFC_VPORT_UNKNOWN;
+ lpfc_sli_brdrestart(phba);
+ rc = lpfc_sli_chipset_init(phba);
+ if (rc)
+ break;
+
+ spin_lock_irq(&phba->hbalock);
+ phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ spin_unlock_irq(&phba->hbalock);
+ resetcount++;
+
+ /* Call pre CONFIG_PORT mailbox command initialization. A
+ * value of 0 means the call was successful. Any other
+ * nonzero value is a failure, but if ERESTART is returned,
+ * the driver may reset the HBA and try again.
+ */
+ rc = lpfc_config_port_prep(phba);
+ if (rc == -ERESTART) {
+ phba->link_state = LPFC_LINK_UNKNOWN;
+ continue;
+ } else if (rc)
+ break;
+
+ phba->link_state = LPFC_INIT_MBX_CMDS;
+ lpfc_config_port(phba, pmb);
+ rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
+ phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED |
+ LPFC_SLI3_HBQ_ENABLED |
+ LPFC_SLI3_CRP_ENABLED |
+ LPFC_SLI3_DSS_ENABLED);
+ if (rc != MBX_SUCCESS) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0442 Adapter failed to init, mbxCmd x%x "
+ "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
+ pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus, 0);
+ spin_lock_irq(&phba->hbalock);
+ phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
+ spin_unlock_irq(&phba->hbalock);
+ rc = -ENXIO;
+ } else {
+ /* Allow asynchronous mailbox command to go through */
+ spin_lock_irq(&phba->hbalock);
+ phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
+ spin_unlock_irq(&phba->hbalock);
+ done = 1;
+
+ if ((pmb->u.mb.un.varCfgPort.casabt == 1) &&
+ (pmb->u.mb.un.varCfgPort.gasabt == 0))
+ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+ "3110 Port did not grant ASABT\n");
+ }
+ }
+ if (!done) {
+ rc = -EINVAL;
+ goto do_prep_failed;
+ }
+ if (pmb->u.mb.un.varCfgPort.sli_mode == 3) {
+ if (!pmb->u.mb.un.varCfgPort.cMA) {
+ rc = -ENXIO;
+ goto do_prep_failed;
+ }
+ if (phba->max_vpi && pmb->u.mb.un.varCfgPort.gmv) {
+ phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
+ phba->max_vpi = pmb->u.mb.un.varCfgPort.max_vpi;
+ phba->max_vports = (phba->max_vpi > phba->max_vports) ?
+ phba->max_vpi : phba->max_vports;
+
+ } else
+ phba->max_vpi = 0;
+ if (pmb->u.mb.un.varCfgPort.gerbm)
+ phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
+ if (pmb->u.mb.un.varCfgPort.gcrp)
+ phba->sli3_options |= LPFC_SLI3_CRP_ENABLED;
+
+ phba->hbq_get = phba->mbox->us.s3_pgp.hbq_get;
+ phba->port_gp = phba->mbox->us.s3_pgp.port;
+
+ if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
+ if (pmb->u.mb.un.varCfgPort.gbg == 0) {
+ phba->cfg_enable_bg = 0;
+ phba->sli3_options &= ~LPFC_SLI3_BG_ENABLED;
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0443 Adapter did not grant "
+ "BlockGuard\n");
+ }
+ }
+ } else {
+ phba->hbq_get = NULL;
+ phba->port_gp = phba->mbox->us.s2.port;
+ phba->max_vpi = 0;
+ }
+do_prep_failed:
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return rc;
+}
+
+
+/**
+ * lpfc_sli_hba_setup - SLI initialization function
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is the main SLI initialization function. This function
+ * is called by the HBA initialization code, HBA reset code and HBA
+ * error attention handler code. Caller is not required to hold any
+ * locks. This function issues config_port mailbox command to configure
+ * the SLI, setup iocb rings and HBQ rings. In the end the function
+ * calls the config_port_post function to issue init_link mailbox
+ * command and to start the discovery. The function will return zero
+ * if successful, else it will return negative error code.
+ **/
+int
+lpfc_sli_hba_setup(struct lpfc_hba *phba)
+{
+ uint32_t rc;
+ int i;
+ int longs;
+
+ /* Enable ISR already does config_port because of config_msi mbx */
+ if (phba->hba_flag & HBA_NEEDS_CFG_PORT) {
+ rc = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
+ if (rc)
+ return -EIO;
+ phba->hba_flag &= ~HBA_NEEDS_CFG_PORT;
+ }
+ phba->fcp_embed_io = 0; /* SLI4 FC support only */
+
+ /* Enable PCIe device Advanced Error Reporting (AER) if configured */
+ if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) {
+ rc = pci_enable_pcie_error_reporting(phba->pcidev);
+ if (!rc) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "2709 This device supports "
+ "Advanced Error Reporting (AER)\n");
+ spin_lock_irq(&phba->hbalock);
+ phba->hba_flag |= HBA_AER_ENABLED;
+ spin_unlock_irq(&phba->hbalock);
+ } else {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "2708 This device does not support "
+ "Advanced Error Reporting (AER): %d\n",
+ rc);
+ phba->cfg_aer_support = 0;
+ }
+ }
+
+ if (phba->sli_rev == 3) {
+ phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE;
+ phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE;
+ } else {
+ phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE;
+ phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE;
+ phba->sli3_options = 0;
+ }
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "0444 Firmware in SLI %x mode. Max_vpi %d\n",
+ phba->sli_rev, phba->max_vpi);
+ rc = lpfc_sli_ring_map(phba);
+
+ if (rc)
+ goto lpfc_sli_hba_setup_error;
+
+ /* Initialize VPIs. */
+ if (phba->sli_rev == LPFC_SLI_REV3) {
+ /*
+ * The VPI bitmask and physical ID array are allocated
+ * and initialized once only - at driver load. A port
+ * reset doesn't need to reinitialize this memory.
+ */
+ if ((phba->vpi_bmask == NULL) && (phba->vpi_ids == NULL)) {
+ longs = (phba->max_vpi + BITS_PER_LONG) / BITS_PER_LONG;
+ phba->vpi_bmask = kcalloc(longs,
+ sizeof(unsigned long),
+ GFP_KERNEL);
+ if (!phba->vpi_bmask) {
+ rc = -ENOMEM;
+ goto lpfc_sli_hba_setup_error;
+ }
+
+ phba->vpi_ids = kcalloc(phba->max_vpi + 1,
+ sizeof(uint16_t),
+ GFP_KERNEL);
+ if (!phba->vpi_ids) {
+ kfree(phba->vpi_bmask);
+ rc = -ENOMEM;
+ goto lpfc_sli_hba_setup_error;
+ }
+ for (i = 0; i < phba->max_vpi; i++)
+ phba->vpi_ids[i] = i;
+ }
+ }
+
+ /* Init HBQs */
+ if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
+ rc = lpfc_sli_hbq_setup(phba);
+ if (rc)
+ goto lpfc_sli_hba_setup_error;
+ }
+ spin_lock_irq(&phba->hbalock);
+ phba->sli.sli_flag |= LPFC_PROCESS_LA;
+ spin_unlock_irq(&phba->hbalock);
+
+ rc = lpfc_config_port_post(phba);
+ if (rc)
+ goto lpfc_sli_hba_setup_error;
+
+ return rc;
+
+lpfc_sli_hba_setup_error:
+ phba->link_state = LPFC_HBA_ERROR;
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0445 Firmware initialization failed\n");
+ return rc;
+}
+
+/**
+ * lpfc_sli4_read_fcoe_params - Read fcoe params from conf region
+ * @phba: Pointer to HBA context object.
+ *
+ * This function issue a dump mailbox command to read config region
+ * 23 and parse the records in the region and populate driver
+ * data structure.
+ **/
+static int
+lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *mboxq;
+ struct lpfc_dmabuf *mp;
+ struct lpfc_mqe *mqe;
+ uint32_t data_length;
+ int rc;
+
+ /* Program the default value of vlan_id and fc_map */
+ phba->valid_vlan = 0;
+ phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
+ phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
+ phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
+
+ mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ return -ENOMEM;
+
+ mqe = &mboxq->u.mqe;
+ if (lpfc_sli4_dump_cfg_rg23(phba, mboxq)) {
+ rc = -ENOMEM;
+ goto out_free_mboxq;
+ }
+
+ mp = (struct lpfc_dmabuf *)mboxq->ctx_buf;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "(%d):2571 Mailbox cmd x%x Status x%x "
+ "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x "
+ "x%x x%x x%x x%x x%x x%x x%x x%x x%x "
+ "CQ: x%x x%x x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0,
+ bf_get(lpfc_mqe_command, mqe),
+ bf_get(lpfc_mqe_status, mqe),
+ mqe->un.mb_words[0], mqe->un.mb_words[1],
+ mqe->un.mb_words[2], mqe->un.mb_words[3],
+ mqe->un.mb_words[4], mqe->un.mb_words[5],
+ mqe->un.mb_words[6], mqe->un.mb_words[7],
+ mqe->un.mb_words[8], mqe->un.mb_words[9],
+ mqe->un.mb_words[10], mqe->un.mb_words[11],
+ mqe->un.mb_words[12], mqe->un.mb_words[13],
+ mqe->un.mb_words[14], mqe->un.mb_words[15],
+ mqe->un.mb_words[16], mqe->un.mb_words[50],
+ mboxq->mcqe.word0,
+ mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1,
+ mboxq->mcqe.trailer);
+
+ if (rc) {
+ rc = -EIO;
+ goto out_free_mboxq;
+ }
+ data_length = mqe->un.mb_words[5];
+ if (data_length > DMP_RGN23_SIZE) {
+ rc = -EIO;
+ goto out_free_mboxq;
+ }
+
+ lpfc_parse_fcoe_conf(phba, mp->virt, data_length);
+ rc = 0;
+
+out_free_mboxq:
+ lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
+ return rc;
+}
+
+/**
+ * lpfc_sli4_read_rev - Issue READ_REV and collect vpd data
+ * @phba: pointer to lpfc hba data structure.
+ * @mboxq: pointer to the LPFC_MBOXQ_t structure.
+ * @vpd: pointer to the memory to hold resulting port vpd data.
+ * @vpd_size: On input, the number of bytes allocated to @vpd.
+ * On output, the number of data bytes in @vpd.
+ *
+ * This routine executes a READ_REV SLI4 mailbox command. In
+ * addition, this routine gets the port vpd data.
+ *
+ * Return codes
+ * 0 - successful
+ * -ENOMEM - could not allocated memory.
+ **/
+static int
+lpfc_sli4_read_rev(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
+ uint8_t *vpd, uint32_t *vpd_size)
+{
+ int rc = 0;
+ uint32_t dma_size;
+ struct lpfc_dmabuf *dmabuf;
+ struct lpfc_mqe *mqe;
+
+ dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+ if (!dmabuf)
+ return -ENOMEM;
+
+ /*
+ * Get a DMA buffer for the vpd data resulting from the READ_REV
+ * mailbox command.
+ */
+ dma_size = *vpd_size;
+ dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, dma_size,
+ &dmabuf->phys, GFP_KERNEL);
+ if (!dmabuf->virt) {
+ kfree(dmabuf);
+ return -ENOMEM;
+ }
+
+ /*
+ * The SLI4 implementation of READ_REV conflicts at word1,
+ * bits 31:16 and SLI4 adds vpd functionality not present
+ * in SLI3. This code corrects the conflicts.
+ */
+ lpfc_read_rev(phba, mboxq);
+ mqe = &mboxq->u.mqe;
+ mqe->un.read_rev.vpd_paddr_high = putPaddrHigh(dmabuf->phys);
+ mqe->un.read_rev.vpd_paddr_low = putPaddrLow(dmabuf->phys);
+ mqe->un.read_rev.word1 &= 0x0000FFFF;
+ bf_set(lpfc_mbx_rd_rev_vpd, &mqe->un.read_rev, 1);
+ bf_set(lpfc_mbx_rd_rev_avail_len, &mqe->un.read_rev, dma_size);
+
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (rc) {
+ dma_free_coherent(&phba->pcidev->dev, dma_size,
+ dmabuf->virt, dmabuf->phys);
+ kfree(dmabuf);
+ return -EIO;
+ }
+
+ /*
+ * The available vpd length cannot be bigger than the
+ * DMA buffer passed to the port. Catch the less than
+ * case and update the caller's size.
+ */
+ if (mqe->un.read_rev.avail_vpd_len < *vpd_size)
+ *vpd_size = mqe->un.read_rev.avail_vpd_len;
+
+ memcpy(vpd, dmabuf->virt, *vpd_size);
+
+ dma_free_coherent(&phba->pcidev->dev, dma_size,
+ dmabuf->virt, dmabuf->phys);
+ kfree(dmabuf);
+ return 0;
+}
+
+/**
+ * lpfc_sli4_get_ctl_attr - Retrieve SLI4 device controller attributes
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine retrieves SLI4 device physical port name this PCI function
+ * is attached to.
+ *
+ * Return codes
+ * 0 - successful
+ * otherwise - failed to retrieve controller attributes
+ **/
+static int
+lpfc_sli4_get_ctl_attr(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *mboxq;
+ struct lpfc_mbx_get_cntl_attributes *mbx_cntl_attr;
+ struct lpfc_controller_attribute *cntl_attr;
+ void *virtaddr = NULL;
+ uint32_t alloclen, reqlen;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ int rc;
+
+ mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ return -ENOMEM;
+
+ /* Send COMMON_GET_CNTL_ATTRIBUTES mbox cmd */
+ reqlen = sizeof(struct lpfc_mbx_get_cntl_attributes);
+ alloclen = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_GET_CNTL_ATTRIBUTES, reqlen,
+ LPFC_SLI4_MBX_NEMBED);
+
+ if (alloclen < reqlen) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3084 Allocated DMA memory size (%d) is "
+ "less than the requested DMA memory size "
+ "(%d)\n", alloclen, reqlen);
+ rc = -ENOMEM;
+ goto out_free_mboxq;
+ }
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ virtaddr = mboxq->sge_array->addr[0];
+ mbx_cntl_attr = (struct lpfc_mbx_get_cntl_attributes *)virtaddr;
+ shdr = &mbx_cntl_attr->cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "3085 Mailbox x%x (x%x/x%x) failed, "
+ "rc:x%x, status:x%x, add_status:x%x\n",
+ bf_get(lpfc_mqe_command, &mboxq->u.mqe),
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ rc, shdr_status, shdr_add_status);
+ rc = -ENXIO;
+ goto out_free_mboxq;
+ }
+
+ cntl_attr = &mbx_cntl_attr->cntl_attr;
+ phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
+ phba->sli4_hba.lnk_info.lnk_tp =
+ bf_get(lpfc_cntl_attr_lnk_type, cntl_attr);
+ phba->sli4_hba.lnk_info.lnk_no =
+ bf_get(lpfc_cntl_attr_lnk_numb, cntl_attr);
+ phba->sli4_hba.flash_id = bf_get(lpfc_cntl_attr_flash_id, cntl_attr);
+ phba->sli4_hba.asic_rev = bf_get(lpfc_cntl_attr_asic_rev, cntl_attr);
+
+ memset(phba->BIOSVersion, 0, sizeof(phba->BIOSVersion));
+ strlcat(phba->BIOSVersion, (char *)cntl_attr->bios_ver_str,
+ sizeof(phba->BIOSVersion));
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "3086 lnk_type:%d, lnk_numb:%d, bios_ver:%s, "
+ "flash_id: x%02x, asic_rev: x%02x\n",
+ phba->sli4_hba.lnk_info.lnk_tp,
+ phba->sli4_hba.lnk_info.lnk_no,
+ phba->BIOSVersion, phba->sli4_hba.flash_id,
+ phba->sli4_hba.asic_rev);
+out_free_mboxq:
+ if (bf_get(lpfc_mqe_command, &mboxq->u.mqe) == MBX_SLI4_CONFIG)
+ lpfc_sli4_mbox_cmd_free(phba, mboxq);
+ else
+ mempool_free(mboxq, phba->mbox_mem_pool);
+ return rc;
+}
+
+/**
+ * lpfc_sli4_retrieve_pport_name - Retrieve SLI4 device physical port name
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine retrieves SLI4 device physical port name this PCI function
+ * is attached to.
+ *
+ * Return codes
+ * 0 - successful
+ * otherwise - failed to retrieve physical port name
+ **/
+static int
+lpfc_sli4_retrieve_pport_name(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *mboxq;
+ struct lpfc_mbx_get_port_name *get_port_name;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ char cport_name = 0;
+ int rc;
+
+ /* We assume nothing at this point */
+ phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_INVAL;
+ phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_NON;
+
+ mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ return -ENOMEM;
+ /* obtain link type and link number via READ_CONFIG */
+ phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_INVAL;
+ lpfc_sli4_read_config(phba);
+
+ if (phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG)
+ phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
+
+ if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL)
+ goto retrieve_ppname;
+
+ /* obtain link type and link number via COMMON_GET_CNTL_ATTRIBUTES */
+ rc = lpfc_sli4_get_ctl_attr(phba);
+ if (rc)
+ goto out_free_mboxq;
+
+retrieve_ppname:
+ lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_GET_PORT_NAME,
+ sizeof(struct lpfc_mbx_get_port_name) -
+ sizeof(struct lpfc_sli4_cfg_mhdr),
+ LPFC_SLI4_MBX_EMBED);
+ get_port_name = &mboxq->u.mqe.un.get_port_name;
+ shdr = (union lpfc_sli4_cfg_shdr *)&get_port_name->header.cfg_shdr;
+ bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_OPCODE_VERSION_1);
+ bf_set(lpfc_mbx_get_port_name_lnk_type, &get_port_name->u.request,
+ phba->sli4_hba.lnk_info.lnk_tp);
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "3087 Mailbox x%x (x%x/x%x) failed: "
+ "rc:x%x, status:x%x, add_status:x%x\n",
+ bf_get(lpfc_mqe_command, &mboxq->u.mqe),
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ rc, shdr_status, shdr_add_status);
+ rc = -ENXIO;
+ goto out_free_mboxq;
+ }
+ switch (phba->sli4_hba.lnk_info.lnk_no) {
+ case LPFC_LINK_NUMBER_0:
+ cport_name = bf_get(lpfc_mbx_get_port_name_name0,
+ &get_port_name->u.response);
+ phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
+ break;
+ case LPFC_LINK_NUMBER_1:
+ cport_name = bf_get(lpfc_mbx_get_port_name_name1,
+ &get_port_name->u.response);
+ phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
+ break;
+ case LPFC_LINK_NUMBER_2:
+ cport_name = bf_get(lpfc_mbx_get_port_name_name2,
+ &get_port_name->u.response);
+ phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
+ break;
+ case LPFC_LINK_NUMBER_3:
+ cport_name = bf_get(lpfc_mbx_get_port_name_name3,
+ &get_port_name->u.response);
+ phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
+ break;
+ default:
+ break;
+ }
+
+ if (phba->sli4_hba.pport_name_sta == LPFC_SLI4_PPNAME_GET) {
+ phba->Port[0] = cport_name;
+ phba->Port[1] = '\0';
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "3091 SLI get port name: %s\n", phba->Port);
+ }
+
+out_free_mboxq:
+ if (bf_get(lpfc_mqe_command, &mboxq->u.mqe) == MBX_SLI4_CONFIG)
+ lpfc_sli4_mbox_cmd_free(phba, mboxq);
+ else
+ mempool_free(mboxq, phba->mbox_mem_pool);
+ return rc;
+}
+
+/**
+ * lpfc_sli4_arm_cqeq_intr - Arm sli-4 device completion and event queues
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is called to explicitly arm the SLI4 device's completion and
+ * event queues
+ **/
+static void
+lpfc_sli4_arm_cqeq_intr(struct lpfc_hba *phba)
+{
+ int qidx;
+ struct lpfc_sli4_hba *sli4_hba = &phba->sli4_hba;
+ struct lpfc_sli4_hdw_queue *qp;
+ struct lpfc_queue *eq;
+
+ sli4_hba->sli4_write_cq_db(phba, sli4_hba->mbx_cq, 0, LPFC_QUEUE_REARM);
+ sli4_hba->sli4_write_cq_db(phba, sli4_hba->els_cq, 0, LPFC_QUEUE_REARM);
+ if (sli4_hba->nvmels_cq)
+ sli4_hba->sli4_write_cq_db(phba, sli4_hba->nvmels_cq, 0,
+ LPFC_QUEUE_REARM);
+
+ if (sli4_hba->hdwq) {
+ /* Loop thru all Hardware Queues */
+ for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
+ qp = &sli4_hba->hdwq[qidx];
+ /* ARM the corresponding CQ */
+ sli4_hba->sli4_write_cq_db(phba, qp->io_cq, 0,
+ LPFC_QUEUE_REARM);
+ }
+
+ /* Loop thru all IRQ vectors */
+ for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
+ eq = sli4_hba->hba_eq_hdl[qidx].eq;
+ /* ARM the corresponding EQ */
+ sli4_hba->sli4_write_eq_db(phba, eq,
+ 0, LPFC_QUEUE_REARM);
+ }
+ }
+
+ if (phba->nvmet_support) {
+ for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++) {
+ sli4_hba->sli4_write_cq_db(phba,
+ sli4_hba->nvmet_cqset[qidx], 0,
+ LPFC_QUEUE_REARM);
+ }
+ }
+}
+
+/**
+ * lpfc_sli4_get_avail_extnt_rsrc - Get available resource extent count.
+ * @phba: Pointer to HBA context object.
+ * @type: The resource extent type.
+ * @extnt_count: buffer to hold port available extent count.
+ * @extnt_size: buffer to hold element count per extent.
+ *
+ * This function calls the port and retrievs the number of available
+ * extents and their size for a particular extent type.
+ *
+ * Returns: 0 if successful. Nonzero otherwise.
+ **/
+int
+lpfc_sli4_get_avail_extnt_rsrc(struct lpfc_hba *phba, uint16_t type,
+ uint16_t *extnt_count, uint16_t *extnt_size)
+{
+ int rc = 0;
+ uint32_t length;
+ uint32_t mbox_tmo;
+ struct lpfc_mbx_get_rsrc_extent_info *rsrc_info;
+ LPFC_MBOXQ_t *mbox;
+
+ *extnt_count = 0;
+ *extnt_size = 0;
+
+ mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+
+ /* Find out how many extents are available for this resource type */
+ length = (sizeof(struct lpfc_mbx_get_rsrc_extent_info) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_GET_RSRC_EXTENT_INFO,
+ length, LPFC_SLI4_MBX_EMBED);
+
+ /* Send an extents count of 0 - the GET doesn't use it. */
+ rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, 0, type,
+ LPFC_SLI4_MBX_EMBED);
+ if (unlikely(rc)) {
+ rc = -EIO;
+ goto err_exit;
+ }
+
+ if (!phba->sli4_hba.intr_enable)
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ else {
+ mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
+ rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+ }
+ if (unlikely(rc)) {
+ rc = -EIO;
+ goto err_exit;
+ }
+
+ rsrc_info = &mbox->u.mqe.un.rsrc_extent_info;
+ if (bf_get(lpfc_mbox_hdr_status,
+ &rsrc_info->header.cfg_shdr.response)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2930 Failed to get resource extents "
+ "Status 0x%x Add'l Status 0x%x\n",
+ bf_get(lpfc_mbox_hdr_status,
+ &rsrc_info->header.cfg_shdr.response),
+ bf_get(lpfc_mbox_hdr_add_status,
+ &rsrc_info->header.cfg_shdr.response));
+ rc = -EIO;
+ goto err_exit;
+ }
+
+ *extnt_count = bf_get(lpfc_mbx_get_rsrc_extent_info_cnt,
+ &rsrc_info->u.rsp);
+ *extnt_size = bf_get(lpfc_mbx_get_rsrc_extent_info_size,
+ &rsrc_info->u.rsp);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "3162 Retrieved extents type-%d from port: count:%d, "
+ "size:%d\n", type, *extnt_count, *extnt_size);
+
+err_exit:
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return rc;
+}
+
+/**
+ * lpfc_sli4_chk_avail_extnt_rsrc - Check for available SLI4 resource extents.
+ * @phba: Pointer to HBA context object.
+ * @type: The extent type to check.
+ *
+ * This function reads the current available extents from the port and checks
+ * if the extent count or extent size has changed since the last access.
+ * Callers use this routine post port reset to understand if there is a
+ * extent reprovisioning requirement.
+ *
+ * Returns:
+ * -Error: error indicates problem.
+ * 1: Extent count or size has changed.
+ * 0: No changes.
+ **/
+static int
+lpfc_sli4_chk_avail_extnt_rsrc(struct lpfc_hba *phba, uint16_t type)
+{
+ uint16_t curr_ext_cnt, rsrc_ext_cnt;
+ uint16_t size_diff, rsrc_ext_size;
+ int rc = 0;
+ struct lpfc_rsrc_blks *rsrc_entry;
+ struct list_head *rsrc_blk_list = NULL;
+
+ size_diff = 0;
+ curr_ext_cnt = 0;
+ rc = lpfc_sli4_get_avail_extnt_rsrc(phba, type,
+ &rsrc_ext_cnt,
+ &rsrc_ext_size);
+ if (unlikely(rc))
+ return -EIO;
+
+ switch (type) {
+ case LPFC_RSC_TYPE_FCOE_RPI:
+ rsrc_blk_list = &phba->sli4_hba.lpfc_rpi_blk_list;
+ break;
+ case LPFC_RSC_TYPE_FCOE_VPI:
+ rsrc_blk_list = &phba->lpfc_vpi_blk_list;
+ break;
+ case LPFC_RSC_TYPE_FCOE_XRI:
+ rsrc_blk_list = &phba->sli4_hba.lpfc_xri_blk_list;
+ break;
+ case LPFC_RSC_TYPE_FCOE_VFI:
+ rsrc_blk_list = &phba->sli4_hba.lpfc_vfi_blk_list;
+ break;
+ default:
+ break;
+ }
+
+ list_for_each_entry(rsrc_entry, rsrc_blk_list, list) {
+ curr_ext_cnt++;
+ if (rsrc_entry->rsrc_size != rsrc_ext_size)
+ size_diff++;
+ }
+
+ if (curr_ext_cnt != rsrc_ext_cnt || size_diff != 0)
+ rc = 1;
+
+ return rc;
+}
+
+/**
+ * lpfc_sli4_cfg_post_extnts -
+ * @phba: Pointer to HBA context object.
+ * @extnt_cnt: number of available extents.
+ * @type: the extent type (rpi, xri, vfi, vpi).
+ * @emb: buffer to hold either MBX_EMBED or MBX_NEMBED operation.
+ * @mbox: pointer to the caller's allocated mailbox structure.
+ *
+ * This function executes the extents allocation request. It also
+ * takes care of the amount of memory needed to allocate or get the
+ * allocated extents. It is the caller's responsibility to evaluate
+ * the response.
+ *
+ * Returns:
+ * -Error: Error value describes the condition found.
+ * 0: if successful
+ **/
+static int
+lpfc_sli4_cfg_post_extnts(struct lpfc_hba *phba, uint16_t extnt_cnt,
+ uint16_t type, bool *emb, LPFC_MBOXQ_t *mbox)
+{
+ int rc = 0;
+ uint32_t req_len;
+ uint32_t emb_len;
+ uint32_t alloc_len, mbox_tmo;
+
+ /* Calculate the total requested length of the dma memory */
+ req_len = extnt_cnt * sizeof(uint16_t);
+
+ /*
+ * Calculate the size of an embedded mailbox. The uint32_t
+ * accounts for extents-specific word.
+ */
+ emb_len = sizeof(MAILBOX_t) - sizeof(struct mbox_header) -
+ sizeof(uint32_t);
+
+ /*
+ * Presume the allocation and response will fit into an embedded
+ * mailbox. If not true, reconfigure to a non-embedded mailbox.
+ */
+ *emb = LPFC_SLI4_MBX_EMBED;
+ if (req_len > emb_len) {
+ req_len = extnt_cnt * sizeof(uint16_t) +
+ sizeof(union lpfc_sli4_cfg_shdr) +
+ sizeof(uint32_t);
+ *emb = LPFC_SLI4_MBX_NEMBED;
+ }
+
+ alloc_len = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_ALLOC_RSRC_EXTENT,
+ req_len, *emb);
+ if (alloc_len < req_len) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2982 Allocated DMA memory size (x%x) is "
+ "less than the requested DMA memory "
+ "size (x%x)\n", alloc_len, req_len);
+ return -ENOMEM;
+ }
+ rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, extnt_cnt, type, *emb);
+ if (unlikely(rc))
+ return -EIO;
+
+ if (!phba->sli4_hba.intr_enable)
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ else {
+ mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
+ rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+ }
+
+ if (unlikely(rc))
+ rc = -EIO;
+ return rc;
+}
+
+/**
+ * lpfc_sli4_alloc_extent - Allocate an SLI4 resource extent.
+ * @phba: Pointer to HBA context object.
+ * @type: The resource extent type to allocate.
+ *
+ * This function allocates the number of elements for the specified
+ * resource type.
+ **/
+static int
+lpfc_sli4_alloc_extent(struct lpfc_hba *phba, uint16_t type)
+{
+ bool emb = false;
+ uint16_t rsrc_id_cnt, rsrc_cnt, rsrc_size;
+ uint16_t rsrc_id, rsrc_start, j, k;
+ uint16_t *ids;
+ int i, rc;
+ unsigned long longs;
+ unsigned long *bmask;
+ struct lpfc_rsrc_blks *rsrc_blks;
+ LPFC_MBOXQ_t *mbox;
+ uint32_t length;
+ struct lpfc_id_range *id_array = NULL;
+ void *virtaddr = NULL;
+ struct lpfc_mbx_nembed_rsrc_extent *n_rsrc;
+ struct lpfc_mbx_alloc_rsrc_extents *rsrc_ext;
+ struct list_head *ext_blk_list;
+
+ rc = lpfc_sli4_get_avail_extnt_rsrc(phba, type,
+ &rsrc_cnt,
+ &rsrc_size);
+ if (unlikely(rc))
+ return -EIO;
+
+ if ((rsrc_cnt == 0) || (rsrc_size == 0)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3009 No available Resource Extents "
+ "for resource type 0x%x: Count: 0x%x, "
+ "Size 0x%x\n", type, rsrc_cnt,
+ rsrc_size);
+ return -ENOMEM;
+ }
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_INIT | LOG_SLI,
+ "2903 Post resource extents type-0x%x: "
+ "count:%d, size %d\n", type, rsrc_cnt, rsrc_size);
+
+ mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+
+ rc = lpfc_sli4_cfg_post_extnts(phba, rsrc_cnt, type, &emb, mbox);
+ if (unlikely(rc)) {
+ rc = -EIO;
+ goto err_exit;
+ }
+
+ /*
+ * Figure out where the response is located. Then get local pointers
+ * to the response data. The port does not guarantee to respond to
+ * all extents counts request so update the local variable with the
+ * allocated count from the port.
+ */
+ if (emb == LPFC_SLI4_MBX_EMBED) {
+ rsrc_ext = &mbox->u.mqe.un.alloc_rsrc_extents;
+ id_array = &rsrc_ext->u.rsp.id[0];
+ rsrc_cnt = bf_get(lpfc_mbx_rsrc_cnt, &rsrc_ext->u.rsp);
+ } else {
+ virtaddr = mbox->sge_array->addr[0];
+ n_rsrc = (struct lpfc_mbx_nembed_rsrc_extent *) virtaddr;
+ rsrc_cnt = bf_get(lpfc_mbx_rsrc_cnt, n_rsrc);
+ id_array = &n_rsrc->id;
+ }
+
+ longs = ((rsrc_cnt * rsrc_size) + BITS_PER_LONG - 1) / BITS_PER_LONG;
+ rsrc_id_cnt = rsrc_cnt * rsrc_size;
+
+ /*
+ * Based on the resource size and count, correct the base and max
+ * resource values.
+ */
+ length = sizeof(struct lpfc_rsrc_blks);
+ switch (type) {
+ case LPFC_RSC_TYPE_FCOE_RPI:
+ phba->sli4_hba.rpi_bmask = kcalloc(longs,
+ sizeof(unsigned long),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.rpi_bmask)) {
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+ phba->sli4_hba.rpi_ids = kcalloc(rsrc_id_cnt,
+ sizeof(uint16_t),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.rpi_ids)) {
+ kfree(phba->sli4_hba.rpi_bmask);
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+
+ /*
+ * The next_rpi was initialized with the maximum available
+ * count but the port may allocate a smaller number. Catch
+ * that case and update the next_rpi.
+ */
+ phba->sli4_hba.next_rpi = rsrc_id_cnt;
+
+ /* Initialize local ptrs for common extent processing later. */
+ bmask = phba->sli4_hba.rpi_bmask;
+ ids = phba->sli4_hba.rpi_ids;
+ ext_blk_list = &phba->sli4_hba.lpfc_rpi_blk_list;
+ break;
+ case LPFC_RSC_TYPE_FCOE_VPI:
+ phba->vpi_bmask = kcalloc(longs, sizeof(unsigned long),
+ GFP_KERNEL);
+ if (unlikely(!phba->vpi_bmask)) {
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+ phba->vpi_ids = kcalloc(rsrc_id_cnt, sizeof(uint16_t),
+ GFP_KERNEL);
+ if (unlikely(!phba->vpi_ids)) {
+ kfree(phba->vpi_bmask);
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+
+ /* Initialize local ptrs for common extent processing later. */
+ bmask = phba->vpi_bmask;
+ ids = phba->vpi_ids;
+ ext_blk_list = &phba->lpfc_vpi_blk_list;
+ break;
+ case LPFC_RSC_TYPE_FCOE_XRI:
+ phba->sli4_hba.xri_bmask = kcalloc(longs,
+ sizeof(unsigned long),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.xri_bmask)) {
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+ phba->sli4_hba.max_cfg_param.xri_used = 0;
+ phba->sli4_hba.xri_ids = kcalloc(rsrc_id_cnt,
+ sizeof(uint16_t),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.xri_ids)) {
+ kfree(phba->sli4_hba.xri_bmask);
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+
+ /* Initialize local ptrs for common extent processing later. */
+ bmask = phba->sli4_hba.xri_bmask;
+ ids = phba->sli4_hba.xri_ids;
+ ext_blk_list = &phba->sli4_hba.lpfc_xri_blk_list;
+ break;
+ case LPFC_RSC_TYPE_FCOE_VFI:
+ phba->sli4_hba.vfi_bmask = kcalloc(longs,
+ sizeof(unsigned long),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.vfi_bmask)) {
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+ phba->sli4_hba.vfi_ids = kcalloc(rsrc_id_cnt,
+ sizeof(uint16_t),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.vfi_ids)) {
+ kfree(phba->sli4_hba.vfi_bmask);
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+
+ /* Initialize local ptrs for common extent processing later. */
+ bmask = phba->sli4_hba.vfi_bmask;
+ ids = phba->sli4_hba.vfi_ids;
+ ext_blk_list = &phba->sli4_hba.lpfc_vfi_blk_list;
+ break;
+ default:
+ /* Unsupported Opcode. Fail call. */
+ id_array = NULL;
+ bmask = NULL;
+ ids = NULL;
+ ext_blk_list = NULL;
+ goto err_exit;
+ }
+
+ /*
+ * Complete initializing the extent configuration with the
+ * allocated ids assigned to this function. The bitmask serves
+ * as an index into the array and manages the available ids. The
+ * array just stores the ids communicated to the port via the wqes.
+ */
+ for (i = 0, j = 0, k = 0; i < rsrc_cnt; i++) {
+ if ((i % 2) == 0)
+ rsrc_id = bf_get(lpfc_mbx_rsrc_id_word4_0,
+ &id_array[k]);
+ else
+ rsrc_id = bf_get(lpfc_mbx_rsrc_id_word4_1,
+ &id_array[k]);
+
+ rsrc_blks = kzalloc(length, GFP_KERNEL);
+ if (unlikely(!rsrc_blks)) {
+ rc = -ENOMEM;
+ kfree(bmask);
+ kfree(ids);
+ goto err_exit;
+ }
+ rsrc_blks->rsrc_start = rsrc_id;
+ rsrc_blks->rsrc_size = rsrc_size;
+ list_add_tail(&rsrc_blks->list, ext_blk_list);
+ rsrc_start = rsrc_id;
+ if ((type == LPFC_RSC_TYPE_FCOE_XRI) && (j == 0)) {
+ phba->sli4_hba.io_xri_start = rsrc_start +
+ lpfc_sli4_get_iocb_cnt(phba);
+ }
+
+ while (rsrc_id < (rsrc_start + rsrc_size)) {
+ ids[j] = rsrc_id;
+ rsrc_id++;
+ j++;
+ }
+ /* Entire word processed. Get next word.*/
+ if ((i % 2) == 1)
+ k++;
+ }
+ err_exit:
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ return rc;
+}
+
+
+
+/**
+ * lpfc_sli4_dealloc_extent - Deallocate an SLI4 resource extent.
+ * @phba: Pointer to HBA context object.
+ * @type: the extent's type.
+ *
+ * This function deallocates all extents of a particular resource type.
+ * SLI4 does not allow for deallocating a particular extent range. It
+ * is the caller's responsibility to release all kernel memory resources.
+ **/
+static int
+lpfc_sli4_dealloc_extent(struct lpfc_hba *phba, uint16_t type)
+{
+ int rc;
+ uint32_t length, mbox_tmo = 0;
+ LPFC_MBOXQ_t *mbox;
+ struct lpfc_mbx_dealloc_rsrc_extents *dealloc_rsrc;
+ struct lpfc_rsrc_blks *rsrc_blk, *rsrc_blk_next;
+
+ mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+
+ /*
+ * This function sends an embedded mailbox because it only sends the
+ * the resource type. All extents of this type are released by the
+ * port.
+ */
+ length = (sizeof(struct lpfc_mbx_dealloc_rsrc_extents) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_DEALLOC_RSRC_EXTENT,
+ length, LPFC_SLI4_MBX_EMBED);
+
+ /* Send an extents count of 0 - the dealloc doesn't use it. */
+ rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, 0, type,
+ LPFC_SLI4_MBX_EMBED);
+ if (unlikely(rc)) {
+ rc = -EIO;
+ goto out_free_mbox;
+ }
+ if (!phba->sli4_hba.intr_enable)
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ else {
+ mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
+ rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+ }
+ if (unlikely(rc)) {
+ rc = -EIO;
+ goto out_free_mbox;
+ }
+
+ dealloc_rsrc = &mbox->u.mqe.un.dealloc_rsrc_extents;
+ if (bf_get(lpfc_mbox_hdr_status,
+ &dealloc_rsrc->header.cfg_shdr.response)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2919 Failed to release resource extents "
+ "for type %d - Status 0x%x Add'l Status 0x%x. "
+ "Resource memory not released.\n",
+ type,
+ bf_get(lpfc_mbox_hdr_status,
+ &dealloc_rsrc->header.cfg_shdr.response),
+ bf_get(lpfc_mbox_hdr_add_status,
+ &dealloc_rsrc->header.cfg_shdr.response));
+ rc = -EIO;
+ goto out_free_mbox;
+ }
+
+ /* Release kernel memory resources for the specific type. */
+ switch (type) {
+ case LPFC_RSC_TYPE_FCOE_VPI:
+ kfree(phba->vpi_bmask);
+ kfree(phba->vpi_ids);
+ bf_set(lpfc_vpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
+ list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
+ &phba->lpfc_vpi_blk_list, list) {
+ list_del_init(&rsrc_blk->list);
+ kfree(rsrc_blk);
+ }
+ phba->sli4_hba.max_cfg_param.vpi_used = 0;
+ break;
+ case LPFC_RSC_TYPE_FCOE_XRI:
+ kfree(phba->sli4_hba.xri_bmask);
+ kfree(phba->sli4_hba.xri_ids);
+ list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
+ &phba->sli4_hba.lpfc_xri_blk_list, list) {
+ list_del_init(&rsrc_blk->list);
+ kfree(rsrc_blk);
+ }
+ break;
+ case LPFC_RSC_TYPE_FCOE_VFI:
+ kfree(phba->sli4_hba.vfi_bmask);
+ kfree(phba->sli4_hba.vfi_ids);
+ bf_set(lpfc_vfi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
+ list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
+ &phba->sli4_hba.lpfc_vfi_blk_list, list) {
+ list_del_init(&rsrc_blk->list);
+ kfree(rsrc_blk);
+ }
+ break;
+ case LPFC_RSC_TYPE_FCOE_RPI:
+ /* RPI bitmask and physical id array are cleaned up earlier. */
+ list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
+ &phba->sli4_hba.lpfc_rpi_blk_list, list) {
+ list_del_init(&rsrc_blk->list);
+ kfree(rsrc_blk);
+ }
+ break;
+ default:
+ break;
+ }
+
+ bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
+
+ out_free_mbox:
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return rc;
+}
+
+static void
+lpfc_set_features(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox,
+ uint32_t feature)
+{
+ uint32_t len;
+ u32 sig_freq = 0;
+
+ len = sizeof(struct lpfc_mbx_set_feature) -
+ sizeof(struct lpfc_sli4_cfg_mhdr);
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_SET_FEATURES, len,
+ LPFC_SLI4_MBX_EMBED);
+
+ switch (feature) {
+ case LPFC_SET_UE_RECOVERY:
+ bf_set(lpfc_mbx_set_feature_UER,
+ &mbox->u.mqe.un.set_feature, 1);
+ mbox->u.mqe.un.set_feature.feature = LPFC_SET_UE_RECOVERY;
+ mbox->u.mqe.un.set_feature.param_len = 8;
+ break;
+ case LPFC_SET_MDS_DIAGS:
+ bf_set(lpfc_mbx_set_feature_mds,
+ &mbox->u.mqe.un.set_feature, 1);
+ bf_set(lpfc_mbx_set_feature_mds_deep_loopbk,
+ &mbox->u.mqe.un.set_feature, 1);
+ mbox->u.mqe.un.set_feature.feature = LPFC_SET_MDS_DIAGS;
+ mbox->u.mqe.un.set_feature.param_len = 8;
+ break;
+ case LPFC_SET_CGN_SIGNAL:
+ if (phba->cmf_active_mode == LPFC_CFG_OFF)
+ sig_freq = 0;
+ else
+ sig_freq = phba->cgn_sig_freq;
+
+ if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
+ bf_set(lpfc_mbx_set_feature_CGN_alarm_freq,
+ &mbox->u.mqe.un.set_feature, sig_freq);
+ bf_set(lpfc_mbx_set_feature_CGN_warn_freq,
+ &mbox->u.mqe.un.set_feature, sig_freq);
+ }
+
+ if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY)
+ bf_set(lpfc_mbx_set_feature_CGN_warn_freq,
+ &mbox->u.mqe.un.set_feature, sig_freq);
+
+ if (phba->cmf_active_mode == LPFC_CFG_OFF ||
+ phba->cgn_reg_signal == EDC_CG_SIG_NOTSUPPORTED)
+ sig_freq = 0;
+ else
+ sig_freq = lpfc_acqe_cgn_frequency;
+
+ bf_set(lpfc_mbx_set_feature_CGN_acqe_freq,
+ &mbox->u.mqe.un.set_feature, sig_freq);
+
+ mbox->u.mqe.un.set_feature.feature = LPFC_SET_CGN_SIGNAL;
+ mbox->u.mqe.un.set_feature.param_len = 12;
+ break;
+ case LPFC_SET_DUAL_DUMP:
+ bf_set(lpfc_mbx_set_feature_dd,
+ &mbox->u.mqe.un.set_feature, LPFC_ENABLE_DUAL_DUMP);
+ bf_set(lpfc_mbx_set_feature_ddquery,
+ &mbox->u.mqe.un.set_feature, 0);
+ mbox->u.mqe.un.set_feature.feature = LPFC_SET_DUAL_DUMP;
+ mbox->u.mqe.un.set_feature.param_len = 4;
+ break;
+ case LPFC_SET_ENABLE_MI:
+ mbox->u.mqe.un.set_feature.feature = LPFC_SET_ENABLE_MI;
+ mbox->u.mqe.un.set_feature.param_len = 4;
+ bf_set(lpfc_mbx_set_feature_milunq, &mbox->u.mqe.un.set_feature,
+ phba->pport->cfg_lun_queue_depth);
+ bf_set(lpfc_mbx_set_feature_mi, &mbox->u.mqe.un.set_feature,
+ phba->sli4_hba.pc_sli4_params.mi_ver);
+ break;
+ case LPFC_SET_LD_SIGNAL:
+ mbox->u.mqe.un.set_feature.feature = LPFC_SET_LD_SIGNAL;
+ mbox->u.mqe.un.set_feature.param_len = 16;
+ bf_set(lpfc_mbx_set_feature_lds_qry,
+ &mbox->u.mqe.un.set_feature, LPFC_QUERY_LDS_OP);
+ break;
+ case LPFC_SET_ENABLE_CMF:
+ mbox->u.mqe.un.set_feature.feature = LPFC_SET_ENABLE_CMF;
+ mbox->u.mqe.un.set_feature.param_len = 4;
+ bf_set(lpfc_mbx_set_feature_cmf,
+ &mbox->u.mqe.un.set_feature, 1);
+ break;
+ }
+ return;
+}
+
+/**
+ * lpfc_ras_stop_fwlog: Disable FW logging by the adapter
+ * @phba: Pointer to HBA context object.
+ *
+ * Disable FW logging into host memory on the adapter. To
+ * be done before reading logs from the host memory.
+ **/
+void
+lpfc_ras_stop_fwlog(struct lpfc_hba *phba)
+{
+ struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
+
+ spin_lock_irq(&phba->hbalock);
+ ras_fwlog->state = INACTIVE;
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Disable FW logging to host memory */
+ writel(LPFC_CTL_PDEV_CTL_DDL_RAS,
+ phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET);
+
+ /* Wait 10ms for firmware to stop using DMA buffer */
+ usleep_range(10 * 1000, 20 * 1000);
+}
+
+/**
+ * lpfc_sli4_ras_dma_free - Free memory allocated for FW logging.
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called to free memory allocated for RAS FW logging
+ * support in the driver.
+ **/
+void
+lpfc_sli4_ras_dma_free(struct lpfc_hba *phba)
+{
+ struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
+ struct lpfc_dmabuf *dmabuf, *next;
+
+ if (!list_empty(&ras_fwlog->fwlog_buff_list)) {
+ list_for_each_entry_safe(dmabuf, next,
+ &ras_fwlog->fwlog_buff_list,
+ list) {
+ list_del(&dmabuf->list);
+ dma_free_coherent(&phba->pcidev->dev,
+ LPFC_RAS_MAX_ENTRY_SIZE,
+ dmabuf->virt, dmabuf->phys);
+ kfree(dmabuf);
+ }
+ }
+
+ if (ras_fwlog->lwpd.virt) {
+ dma_free_coherent(&phba->pcidev->dev,
+ sizeof(uint32_t) * 2,
+ ras_fwlog->lwpd.virt,
+ ras_fwlog->lwpd.phys);
+ ras_fwlog->lwpd.virt = NULL;
+ }
+
+ spin_lock_irq(&phba->hbalock);
+ ras_fwlog->state = INACTIVE;
+ spin_unlock_irq(&phba->hbalock);
+}
+
+/**
+ * lpfc_sli4_ras_dma_alloc: Allocate memory for FW support
+ * @phba: Pointer to HBA context object.
+ * @fwlog_buff_count: Count of buffers to be created.
+ *
+ * This routine DMA memory for Log Write Position Data[LPWD] and buffer
+ * to update FW log is posted to the adapter.
+ * Buffer count is calculated based on module param ras_fwlog_buffsize
+ * Size of each buffer posted to FW is 64K.
+ **/
+
+static int
+lpfc_sli4_ras_dma_alloc(struct lpfc_hba *phba,
+ uint32_t fwlog_buff_count)
+{
+ struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
+ struct lpfc_dmabuf *dmabuf;
+ int rc = 0, i = 0;
+
+ /* Initialize List */
+ INIT_LIST_HEAD(&ras_fwlog->fwlog_buff_list);
+
+ /* Allocate memory for the LWPD */
+ ras_fwlog->lwpd.virt = dma_alloc_coherent(&phba->pcidev->dev,
+ sizeof(uint32_t) * 2,
+ &ras_fwlog->lwpd.phys,
+ GFP_KERNEL);
+ if (!ras_fwlog->lwpd.virt) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6185 LWPD Memory Alloc Failed\n");
+
+ return -ENOMEM;
+ }
+
+ ras_fwlog->fw_buffcount = fwlog_buff_count;
+ for (i = 0; i < ras_fwlog->fw_buffcount; i++) {
+ dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
+ GFP_KERNEL);
+ if (!dmabuf) {
+ rc = -ENOMEM;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+ "6186 Memory Alloc failed FW logging");
+ goto free_mem;
+ }
+
+ dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
+ LPFC_RAS_MAX_ENTRY_SIZE,
+ &dmabuf->phys, GFP_KERNEL);
+ if (!dmabuf->virt) {
+ kfree(dmabuf);
+ rc = -ENOMEM;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+ "6187 DMA Alloc Failed FW logging");
+ goto free_mem;
+ }
+ dmabuf->buffer_tag = i;
+ list_add_tail(&dmabuf->list, &ras_fwlog->fwlog_buff_list);
+ }
+
+free_mem:
+ if (rc)
+ lpfc_sli4_ras_dma_free(phba);
+
+ return rc;
+}
+
+/**
+ * lpfc_sli4_ras_mbox_cmpl: Completion handler for RAS MBX command
+ * @phba: pointer to lpfc hba data structure.
+ * @pmb: pointer to the driver internal queue element for mailbox command.
+ *
+ * Completion handler for driver's RAS MBX command to the device.
+ **/
+static void
+lpfc_sli4_ras_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+{
+ MAILBOX_t *mb;
+ union lpfc_sli4_cfg_shdr *shdr;
+ uint32_t shdr_status, shdr_add_status;
+ struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
+
+ mb = &pmb->u.mb;
+
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &pmb->u.mqe.un.ras_fwlog.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+
+ if (mb->mbxStatus != MBX_SUCCESS || shdr_status) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6188 FW LOG mailbox "
+ "completed with status x%x add_status x%x,"
+ " mbx status x%x\n",
+ shdr_status, shdr_add_status, mb->mbxStatus);
+
+ ras_fwlog->ras_hwsupport = false;
+ goto disable_ras;
+ }
+
+ spin_lock_irq(&phba->hbalock);
+ ras_fwlog->state = ACTIVE;
+ spin_unlock_irq(&phba->hbalock);
+ mempool_free(pmb, phba->mbox_mem_pool);
+
+ return;
+
+disable_ras:
+ /* Free RAS DMA memory */
+ lpfc_sli4_ras_dma_free(phba);
+ mempool_free(pmb, phba->mbox_mem_pool);
+}
+
+/**
+ * lpfc_sli4_ras_fwlog_init: Initialize memory and post RAS MBX command
+ * @phba: pointer to lpfc hba data structure.
+ * @fwlog_level: Logging verbosity level.
+ * @fwlog_enable: Enable/Disable logging.
+ *
+ * Initialize memory and post mailbox command to enable FW logging in host
+ * memory.
+ **/
+int
+lpfc_sli4_ras_fwlog_init(struct lpfc_hba *phba,
+ uint32_t fwlog_level,
+ uint32_t fwlog_enable)
+{
+ struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
+ struct lpfc_mbx_set_ras_fwlog *mbx_fwlog = NULL;
+ struct lpfc_dmabuf *dmabuf;
+ LPFC_MBOXQ_t *mbox;
+ uint32_t len = 0, fwlog_buffsize, fwlog_entry_count;
+ int rc = 0;
+
+ spin_lock_irq(&phba->hbalock);
+ ras_fwlog->state = INACTIVE;
+ spin_unlock_irq(&phba->hbalock);
+
+ fwlog_buffsize = (LPFC_RAS_MIN_BUFF_POST_SIZE *
+ phba->cfg_ras_fwlog_buffsize);
+ fwlog_entry_count = (fwlog_buffsize/LPFC_RAS_MAX_ENTRY_SIZE);
+
+ /*
+ * If re-enabling FW logging support use earlier allocated
+ * DMA buffers while posting MBX command.
+ **/
+ if (!ras_fwlog->lwpd.virt) {
+ rc = lpfc_sli4_ras_dma_alloc(phba, fwlog_entry_count);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+ "6189 FW Log Memory Allocation Failed");
+ return rc;
+ }
+ }
+
+ /* Setup Mailbox command */
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6190 RAS MBX Alloc Failed");
+ rc = -ENOMEM;
+ goto mem_free;
+ }
+
+ ras_fwlog->fw_loglevel = fwlog_level;
+ len = (sizeof(struct lpfc_mbx_set_ras_fwlog) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_LOWLEVEL,
+ LPFC_MBOX_OPCODE_SET_DIAG_LOG_OPTION,
+ len, LPFC_SLI4_MBX_EMBED);
+
+ mbx_fwlog = (struct lpfc_mbx_set_ras_fwlog *)&mbox->u.mqe.un.ras_fwlog;
+ bf_set(lpfc_fwlog_enable, &mbx_fwlog->u.request,
+ fwlog_enable);
+ bf_set(lpfc_fwlog_loglvl, &mbx_fwlog->u.request,
+ ras_fwlog->fw_loglevel);
+ bf_set(lpfc_fwlog_buffcnt, &mbx_fwlog->u.request,
+ ras_fwlog->fw_buffcount);
+ bf_set(lpfc_fwlog_buffsz, &mbx_fwlog->u.request,
+ LPFC_RAS_MAX_ENTRY_SIZE/SLI4_PAGE_SIZE);
+
+ /* Update DMA buffer address */
+ list_for_each_entry(dmabuf, &ras_fwlog->fwlog_buff_list, list) {
+ memset(dmabuf->virt, 0, LPFC_RAS_MAX_ENTRY_SIZE);
+
+ mbx_fwlog->u.request.buff_fwlog[dmabuf->buffer_tag].addr_lo =
+ putPaddrLow(dmabuf->phys);
+
+ mbx_fwlog->u.request.buff_fwlog[dmabuf->buffer_tag].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ }
+
+ /* Update LPWD address */
+ mbx_fwlog->u.request.lwpd.addr_lo = putPaddrLow(ras_fwlog->lwpd.phys);
+ mbx_fwlog->u.request.lwpd.addr_hi = putPaddrHigh(ras_fwlog->lwpd.phys);
+
+ spin_lock_irq(&phba->hbalock);
+ ras_fwlog->state = REG_INPROGRESS;
+ spin_unlock_irq(&phba->hbalock);
+ mbox->vport = phba->pport;
+ mbox->mbox_cmpl = lpfc_sli4_ras_mbox_cmpl;
+
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+
+ if (rc == MBX_NOT_FINISHED) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6191 FW-Log Mailbox failed. "
+ "status %d mbxStatus : x%x", rc,
+ bf_get(lpfc_mqe_status, &mbox->u.mqe));
+ mempool_free(mbox, phba->mbox_mem_pool);
+ rc = -EIO;
+ goto mem_free;
+ } else
+ rc = 0;
+mem_free:
+ if (rc)
+ lpfc_sli4_ras_dma_free(phba);
+
+ return rc;
+}
+
+/**
+ * lpfc_sli4_ras_setup - Check if RAS supported on the adapter
+ * @phba: Pointer to HBA context object.
+ *
+ * Check if RAS is supported on the adapter and initialize it.
+ **/
+void
+lpfc_sli4_ras_setup(struct lpfc_hba *phba)
+{
+ /* Check RAS FW Log needs to be enabled or not */
+ if (lpfc_check_fwlog_support(phba))
+ return;
+
+ lpfc_sli4_ras_fwlog_init(phba, phba->cfg_ras_fwlog_level,
+ LPFC_RAS_ENABLE_LOGGING);
+}
+
+/**
+ * lpfc_sli4_alloc_resource_identifiers - Allocate all SLI4 resource extents.
+ * @phba: Pointer to HBA context object.
+ *
+ * This function allocates all SLI4 resource identifiers.
+ **/
+int
+lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba)
+{
+ int i, rc, error = 0;
+ uint16_t count, base;
+ unsigned long longs;
+
+ if (!phba->sli4_hba.rpi_hdrs_in_use)
+ phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
+ if (phba->sli4_hba.extents_in_use) {
+ /*
+ * The port supports resource extents. The XRI, VPI, VFI, RPI
+ * resource extent count must be read and allocated before
+ * provisioning the resource id arrays.
+ */
+ if (bf_get(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags) ==
+ LPFC_IDX_RSRC_RDY) {
+ /*
+ * Extent-based resources are set - the driver could
+ * be in a port reset. Figure out if any corrective
+ * actions need to be taken.
+ */
+ rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
+ LPFC_RSC_TYPE_FCOE_VFI);
+ if (rc != 0)
+ error++;
+ rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
+ LPFC_RSC_TYPE_FCOE_VPI);
+ if (rc != 0)
+ error++;
+ rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
+ LPFC_RSC_TYPE_FCOE_XRI);
+ if (rc != 0)
+ error++;
+ rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
+ LPFC_RSC_TYPE_FCOE_RPI);
+ if (rc != 0)
+ error++;
+
+ /*
+ * It's possible that the number of resources
+ * provided to this port instance changed between
+ * resets. Detect this condition and reallocate
+ * resources. Otherwise, there is no action.
+ */
+ if (error) {
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_MBOX | LOG_INIT,
+ "2931 Detected extent resource "
+ "change. Reallocating all "
+ "extents.\n");
+ rc = lpfc_sli4_dealloc_extent(phba,
+ LPFC_RSC_TYPE_FCOE_VFI);
+ rc = lpfc_sli4_dealloc_extent(phba,
+ LPFC_RSC_TYPE_FCOE_VPI);
+ rc = lpfc_sli4_dealloc_extent(phba,
+ LPFC_RSC_TYPE_FCOE_XRI);
+ rc = lpfc_sli4_dealloc_extent(phba,
+ LPFC_RSC_TYPE_FCOE_RPI);
+ } else
+ return 0;
+ }
+
+ rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_VFI);
+ if (unlikely(rc))
+ goto err_exit;
+
+ rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_VPI);
+ if (unlikely(rc))
+ goto err_exit;
+
+ rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_RPI);
+ if (unlikely(rc))
+ goto err_exit;
+
+ rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_XRI);
+ if (unlikely(rc))
+ goto err_exit;
+ bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags,
+ LPFC_IDX_RSRC_RDY);
+ return rc;
+ } else {
+ /*
+ * The port does not support resource extents. The XRI, VPI,
+ * VFI, RPI resource ids were determined from READ_CONFIG.
+ * Just allocate the bitmasks and provision the resource id
+ * arrays. If a port reset is active, the resources don't
+ * need any action - just exit.
+ */
+ if (bf_get(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags) ==
+ LPFC_IDX_RSRC_RDY) {
+ lpfc_sli4_dealloc_resource_identifiers(phba);
+ lpfc_sli4_remove_rpis(phba);
+ }
+ /* RPIs. */
+ count = phba->sli4_hba.max_cfg_param.max_rpi;
+ if (count <= 0) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3279 Invalid provisioning of "
+ "rpi:%d\n", count);
+ rc = -EINVAL;
+ goto err_exit;
+ }
+ base = phba->sli4_hba.max_cfg_param.rpi_base;
+ longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
+ phba->sli4_hba.rpi_bmask = kcalloc(longs,
+ sizeof(unsigned long),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.rpi_bmask)) {
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+ phba->sli4_hba.rpi_ids = kcalloc(count, sizeof(uint16_t),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.rpi_ids)) {
+ rc = -ENOMEM;
+ goto free_rpi_bmask;
+ }
+
+ for (i = 0; i < count; i++)
+ phba->sli4_hba.rpi_ids[i] = base + i;
+
+ /* VPIs. */
+ count = phba->sli4_hba.max_cfg_param.max_vpi;
+ if (count <= 0) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3280 Invalid provisioning of "
+ "vpi:%d\n", count);
+ rc = -EINVAL;
+ goto free_rpi_ids;
+ }
+ base = phba->sli4_hba.max_cfg_param.vpi_base;
+ longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
+ phba->vpi_bmask = kcalloc(longs, sizeof(unsigned long),
+ GFP_KERNEL);
+ if (unlikely(!phba->vpi_bmask)) {
+ rc = -ENOMEM;
+ goto free_rpi_ids;
+ }
+ phba->vpi_ids = kcalloc(count, sizeof(uint16_t),
+ GFP_KERNEL);
+ if (unlikely(!phba->vpi_ids)) {
+ rc = -ENOMEM;
+ goto free_vpi_bmask;
+ }
+
+ for (i = 0; i < count; i++)
+ phba->vpi_ids[i] = base + i;
+
+ /* XRIs. */
+ count = phba->sli4_hba.max_cfg_param.max_xri;
+ if (count <= 0) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3281 Invalid provisioning of "
+ "xri:%d\n", count);
+ rc = -EINVAL;
+ goto free_vpi_ids;
+ }
+ base = phba->sli4_hba.max_cfg_param.xri_base;
+ longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
+ phba->sli4_hba.xri_bmask = kcalloc(longs,
+ sizeof(unsigned long),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.xri_bmask)) {
+ rc = -ENOMEM;
+ goto free_vpi_ids;
+ }
+ phba->sli4_hba.max_cfg_param.xri_used = 0;
+ phba->sli4_hba.xri_ids = kcalloc(count, sizeof(uint16_t),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.xri_ids)) {
+ rc = -ENOMEM;
+ goto free_xri_bmask;
+ }
+
+ for (i = 0; i < count; i++)
+ phba->sli4_hba.xri_ids[i] = base + i;
+
+ /* VFIs. */
+ count = phba->sli4_hba.max_cfg_param.max_vfi;
+ if (count <= 0) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3282 Invalid provisioning of "
+ "vfi:%d\n", count);
+ rc = -EINVAL;
+ goto free_xri_ids;
+ }
+ base = phba->sli4_hba.max_cfg_param.vfi_base;
+ longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
+ phba->sli4_hba.vfi_bmask = kcalloc(longs,
+ sizeof(unsigned long),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.vfi_bmask)) {
+ rc = -ENOMEM;
+ goto free_xri_ids;
+ }
+ phba->sli4_hba.vfi_ids = kcalloc(count, sizeof(uint16_t),
+ GFP_KERNEL);
+ if (unlikely(!phba->sli4_hba.vfi_ids)) {
+ rc = -ENOMEM;
+ goto free_vfi_bmask;
+ }
+
+ for (i = 0; i < count; i++)
+ phba->sli4_hba.vfi_ids[i] = base + i;
+
+ /*
+ * Mark all resources ready. An HBA reset doesn't need
+ * to reset the initialization.
+ */
+ bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags,
+ LPFC_IDX_RSRC_RDY);
+ return 0;
+ }
+
+ free_vfi_bmask:
+ kfree(phba->sli4_hba.vfi_bmask);
+ phba->sli4_hba.vfi_bmask = NULL;
+ free_xri_ids:
+ kfree(phba->sli4_hba.xri_ids);
+ phba->sli4_hba.xri_ids = NULL;
+ free_xri_bmask:
+ kfree(phba->sli4_hba.xri_bmask);
+ phba->sli4_hba.xri_bmask = NULL;
+ free_vpi_ids:
+ kfree(phba->vpi_ids);
+ phba->vpi_ids = NULL;
+ free_vpi_bmask:
+ kfree(phba->vpi_bmask);
+ phba->vpi_bmask = NULL;
+ free_rpi_ids:
+ kfree(phba->sli4_hba.rpi_ids);
+ phba->sli4_hba.rpi_ids = NULL;
+ free_rpi_bmask:
+ kfree(phba->sli4_hba.rpi_bmask);
+ phba->sli4_hba.rpi_bmask = NULL;
+ err_exit:
+ return rc;
+}
+
+/**
+ * lpfc_sli4_dealloc_resource_identifiers - Deallocate all SLI4 resource extents.
+ * @phba: Pointer to HBA context object.
+ *
+ * This function allocates the number of elements for the specified
+ * resource type.
+ **/
+int
+lpfc_sli4_dealloc_resource_identifiers(struct lpfc_hba *phba)
+{
+ if (phba->sli4_hba.extents_in_use) {
+ lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_VPI);
+ lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_RPI);
+ lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_XRI);
+ lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_VFI);
+ } else {
+ kfree(phba->vpi_bmask);
+ phba->sli4_hba.max_cfg_param.vpi_used = 0;
+ kfree(phba->vpi_ids);
+ bf_set(lpfc_vpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
+ kfree(phba->sli4_hba.xri_bmask);
+ kfree(phba->sli4_hba.xri_ids);
+ kfree(phba->sli4_hba.vfi_bmask);
+ kfree(phba->sli4_hba.vfi_ids);
+ bf_set(lpfc_vfi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
+ bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
+ }
+
+ return 0;
+}
+
+/**
+ * lpfc_sli4_get_allocated_extnts - Get the port's allocated extents.
+ * @phba: Pointer to HBA context object.
+ * @type: The resource extent type.
+ * @extnt_cnt: buffer to hold port extent count response
+ * @extnt_size: buffer to hold port extent size response.
+ *
+ * This function calls the port to read the host allocated extents
+ * for a particular type.
+ **/
+int
+lpfc_sli4_get_allocated_extnts(struct lpfc_hba *phba, uint16_t type,
+ uint16_t *extnt_cnt, uint16_t *extnt_size)
+{
+ bool emb;
+ int rc = 0;
+ uint16_t curr_blks = 0;
+ uint32_t req_len, emb_len;
+ uint32_t alloc_len, mbox_tmo;
+ struct list_head *blk_list_head;
+ struct lpfc_rsrc_blks *rsrc_blk;
+ LPFC_MBOXQ_t *mbox;
+ void *virtaddr = NULL;
+ struct lpfc_mbx_nembed_rsrc_extent *n_rsrc;
+ struct lpfc_mbx_alloc_rsrc_extents *rsrc_ext;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ switch (type) {
+ case LPFC_RSC_TYPE_FCOE_VPI:
+ blk_list_head = &phba->lpfc_vpi_blk_list;
+ break;
+ case LPFC_RSC_TYPE_FCOE_XRI:
+ blk_list_head = &phba->sli4_hba.lpfc_xri_blk_list;
+ break;
+ case LPFC_RSC_TYPE_FCOE_VFI:
+ blk_list_head = &phba->sli4_hba.lpfc_vfi_blk_list;
+ break;
+ case LPFC_RSC_TYPE_FCOE_RPI:
+ blk_list_head = &phba->sli4_hba.lpfc_rpi_blk_list;
+ break;
+ default:
+ return -EIO;
+ }
+
+ /* Count the number of extents currently allocatd for this type. */
+ list_for_each_entry(rsrc_blk, blk_list_head, list) {
+ if (curr_blks == 0) {
+ /*
+ * The GET_ALLOCATED mailbox does not return the size,
+ * just the count. The size should be just the size
+ * stored in the current allocated block and all sizes
+ * for an extent type are the same so set the return
+ * value now.
+ */
+ *extnt_size = rsrc_blk->rsrc_size;
+ }
+ curr_blks++;
+ }
+
+ /*
+ * Calculate the size of an embedded mailbox. The uint32_t
+ * accounts for extents-specific word.
+ */
+ emb_len = sizeof(MAILBOX_t) - sizeof(struct mbox_header) -
+ sizeof(uint32_t);
+
+ /*
+ * Presume the allocation and response will fit into an embedded
+ * mailbox. If not true, reconfigure to a non-embedded mailbox.
+ */
+ emb = LPFC_SLI4_MBX_EMBED;
+ req_len = emb_len;
+ if (req_len > emb_len) {
+ req_len = curr_blks * sizeof(uint16_t) +
+ sizeof(union lpfc_sli4_cfg_shdr) +
+ sizeof(uint32_t);
+ emb = LPFC_SLI4_MBX_NEMBED;
+ }
+
+ mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ memset(mbox, 0, sizeof(LPFC_MBOXQ_t));
+
+ alloc_len = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_GET_ALLOC_RSRC_EXTENT,
+ req_len, emb);
+ if (alloc_len < req_len) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2983 Allocated DMA memory size (x%x) is "
+ "less than the requested DMA memory "
+ "size (x%x)\n", alloc_len, req_len);
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+ rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, curr_blks, type, emb);
+ if (unlikely(rc)) {
+ rc = -EIO;
+ goto err_exit;
+ }
+
+ if (!phba->sli4_hba.intr_enable)
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ else {
+ mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
+ rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+ }
+
+ if (unlikely(rc)) {
+ rc = -EIO;
+ goto err_exit;
+ }
+
+ /*
+ * Figure out where the response is located. Then get local pointers
+ * to the response data. The port does not guarantee to respond to
+ * all extents counts request so update the local variable with the
+ * allocated count from the port.
+ */
+ if (emb == LPFC_SLI4_MBX_EMBED) {
+ rsrc_ext = &mbox->u.mqe.un.alloc_rsrc_extents;
+ shdr = &rsrc_ext->header.cfg_shdr;
+ *extnt_cnt = bf_get(lpfc_mbx_rsrc_cnt, &rsrc_ext->u.rsp);
+ } else {
+ virtaddr = mbox->sge_array->addr[0];
+ n_rsrc = (struct lpfc_mbx_nembed_rsrc_extent *) virtaddr;
+ shdr = &n_rsrc->cfg_shdr;
+ *extnt_cnt = bf_get(lpfc_mbx_rsrc_cnt, n_rsrc);
+ }
+
+ if (bf_get(lpfc_mbox_hdr_status, &shdr->response)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2984 Failed to read allocated resources "
+ "for type %d - Status 0x%x Add'l Status 0x%x.\n",
+ type,
+ bf_get(lpfc_mbox_hdr_status, &shdr->response),
+ bf_get(lpfc_mbox_hdr_add_status, &shdr->response));
+ rc = -EIO;
+ goto err_exit;
+ }
+ err_exit:
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ return rc;
+}
+
+/**
+ * lpfc_sli4_repost_sgl_list - Repost the buffers sgl pages as block
+ * @phba: pointer to lpfc hba data structure.
+ * @sgl_list: linked link of sgl buffers to post
+ * @cnt: number of linked list buffers
+ *
+ * This routine walks the list of buffers that have been allocated and
+ * repost them to the port by using SGL block post. This is needed after a
+ * pci_function_reset/warm_start or start. It attempts to construct blocks
+ * of buffer sgls which contains contiguous xris and uses the non-embedded
+ * SGL block post mailbox commands to post them to the port. For single
+ * buffer sgl with non-contiguous xri, if any, it shall use embedded SGL post
+ * mailbox command for posting.
+ *
+ * Returns: 0 = success, non-zero failure.
+ **/
+static int
+lpfc_sli4_repost_sgl_list(struct lpfc_hba *phba,
+ struct list_head *sgl_list, int cnt)
+{
+ struct lpfc_sglq *sglq_entry = NULL;
+ struct lpfc_sglq *sglq_entry_next = NULL;
+ struct lpfc_sglq *sglq_entry_first = NULL;
+ int status, total_cnt;
+ int post_cnt = 0, num_posted = 0, block_cnt = 0;
+ int last_xritag = NO_XRI;
+ LIST_HEAD(prep_sgl_list);
+ LIST_HEAD(blck_sgl_list);
+ LIST_HEAD(allc_sgl_list);
+ LIST_HEAD(post_sgl_list);
+ LIST_HEAD(free_sgl_list);
+
+ spin_lock_irq(&phba->hbalock);
+ spin_lock(&phba->sli4_hba.sgl_list_lock);
+ list_splice_init(sgl_list, &allc_sgl_list);
+ spin_unlock(&phba->sli4_hba.sgl_list_lock);
+ spin_unlock_irq(&phba->hbalock);
+
+ total_cnt = cnt;
+ list_for_each_entry_safe(sglq_entry, sglq_entry_next,
+ &allc_sgl_list, list) {
+ list_del_init(&sglq_entry->list);
+ block_cnt++;
+ if ((last_xritag != NO_XRI) &&
+ (sglq_entry->sli4_xritag != last_xritag + 1)) {
+ /* a hole in xri block, form a sgl posting block */
+ list_splice_init(&prep_sgl_list, &blck_sgl_list);
+ post_cnt = block_cnt - 1;
+ /* prepare list for next posting block */
+ list_add_tail(&sglq_entry->list, &prep_sgl_list);
+ block_cnt = 1;
+ } else {
+ /* prepare list for next posting block */
+ list_add_tail(&sglq_entry->list, &prep_sgl_list);
+ /* enough sgls for non-embed sgl mbox command */
+ if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
+ list_splice_init(&prep_sgl_list,
+ &blck_sgl_list);
+ post_cnt = block_cnt;
+ block_cnt = 0;
+ }
+ }
+ num_posted++;
+
+ /* keep track of last sgl's xritag */
+ last_xritag = sglq_entry->sli4_xritag;
+
+ /* end of repost sgl list condition for buffers */
+ if (num_posted == total_cnt) {
+ if (post_cnt == 0) {
+ list_splice_init(&prep_sgl_list,
+ &blck_sgl_list);
+ post_cnt = block_cnt;
+ } else if (block_cnt == 1) {
+ status = lpfc_sli4_post_sgl(phba,
+ sglq_entry->phys, 0,
+ sglq_entry->sli4_xritag);
+ if (!status) {
+ /* successful, put sgl to posted list */
+ list_add_tail(&sglq_entry->list,
+ &post_sgl_list);
+ } else {
+ /* Failure, put sgl to free list */
+ lpfc_printf_log(phba, KERN_WARNING,
+ LOG_SLI,
+ "3159 Failed to post "
+ "sgl, xritag:x%x\n",
+ sglq_entry->sli4_xritag);
+ list_add_tail(&sglq_entry->list,
+ &free_sgl_list);
+ total_cnt--;
+ }
+ }
+ }
+
+ /* continue until a nembed page worth of sgls */
+ if (post_cnt == 0)
+ continue;
+
+ /* post the buffer list sgls as a block */
+ status = lpfc_sli4_post_sgl_list(phba, &blck_sgl_list,
+ post_cnt);
+
+ if (!status) {
+ /* success, put sgl list to posted sgl list */
+ list_splice_init(&blck_sgl_list, &post_sgl_list);
+ } else {
+ /* Failure, put sgl list to free sgl list */
+ sglq_entry_first = list_first_entry(&blck_sgl_list,
+ struct lpfc_sglq,
+ list);
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "3160 Failed to post sgl-list, "
+ "xritag:x%x-x%x\n",
+ sglq_entry_first->sli4_xritag,
+ (sglq_entry_first->sli4_xritag +
+ post_cnt - 1));
+ list_splice_init(&blck_sgl_list, &free_sgl_list);
+ total_cnt -= post_cnt;
+ }
+
+ /* don't reset xirtag due to hole in xri block */
+ if (block_cnt == 0)
+ last_xritag = NO_XRI;
+
+ /* reset sgl post count for next round of posting */
+ post_cnt = 0;
+ }
+
+ /* free the sgls failed to post */
+ lpfc_free_sgl_list(phba, &free_sgl_list);
+
+ /* push sgls posted to the available list */
+ if (!list_empty(&post_sgl_list)) {
+ spin_lock_irq(&phba->hbalock);
+ spin_lock(&phba->sli4_hba.sgl_list_lock);
+ list_splice_init(&post_sgl_list, sgl_list);
+ spin_unlock(&phba->sli4_hba.sgl_list_lock);
+ spin_unlock_irq(&phba->hbalock);
+ } else {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3161 Failure to post sgl to port,status %x "
+ "blkcnt %d totalcnt %d postcnt %d\n",
+ status, block_cnt, total_cnt, post_cnt);
+ return -EIO;
+ }
+
+ /* return the number of XRIs actually posted */
+ return total_cnt;
+}
+
+/**
+ * lpfc_sli4_repost_io_sgl_list - Repost all the allocated nvme buffer sgls
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine walks the list of nvme buffers that have been allocated and
+ * repost them to the port by using SGL block post. This is needed after a
+ * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
+ * is responsible for moving all nvme buffers on the lpfc_abts_nvme_sgl_list
+ * to the lpfc_io_buf_list. If the repost fails, reject all nvme buffers.
+ *
+ * Returns: 0 = success, non-zero failure.
+ **/
+static int
+lpfc_sli4_repost_io_sgl_list(struct lpfc_hba *phba)
+{
+ LIST_HEAD(post_nblist);
+ int num_posted, rc = 0;
+
+ /* get all NVME buffers need to repost to a local list */
+ lpfc_io_buf_flush(phba, &post_nblist);
+
+ /* post the list of nvme buffer sgls to port if available */
+ if (!list_empty(&post_nblist)) {
+ num_posted = lpfc_sli4_post_io_sgl_list(
+ phba, &post_nblist, phba->sli4_hba.io_xri_cnt);
+ /* failed to post any nvme buffer, return error */
+ if (num_posted == 0)
+ rc = -EIO;
+ }
+ return rc;
+}
+
+static void
+lpfc_set_host_data(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox)
+{
+ uint32_t len;
+
+ len = sizeof(struct lpfc_mbx_set_host_data) -
+ sizeof(struct lpfc_sli4_cfg_mhdr);
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_SET_HOST_DATA, len,
+ LPFC_SLI4_MBX_EMBED);
+
+ mbox->u.mqe.un.set_host_data.param_id = LPFC_SET_HOST_OS_DRIVER_VERSION;
+ mbox->u.mqe.un.set_host_data.param_len =
+ LPFC_HOST_OS_DRIVER_VERSION_SIZE;
+ snprintf(mbox->u.mqe.un.set_host_data.un.data,
+ LPFC_HOST_OS_DRIVER_VERSION_SIZE,
+ "Linux %s v"LPFC_DRIVER_VERSION,
+ (phba->hba_flag & HBA_FCOE_MODE) ? "FCoE" : "FC");
+}
+
+int
+lpfc_post_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *hrq,
+ struct lpfc_queue *drq, int count, int idx)
+{
+ int rc, i;
+ struct lpfc_rqe hrqe;
+ struct lpfc_rqe drqe;
+ struct lpfc_rqb *rqbp;
+ unsigned long flags;
+ struct rqb_dmabuf *rqb_buffer;
+ LIST_HEAD(rqb_buf_list);
+
+ rqbp = hrq->rqbp;
+ for (i = 0; i < count; i++) {
+ spin_lock_irqsave(&phba->hbalock, flags);
+ /* IF RQ is already full, don't bother */
+ if (rqbp->buffer_count + i >= rqbp->entry_count - 1) {
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ break;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+
+ rqb_buffer = rqbp->rqb_alloc_buffer(phba);
+ if (!rqb_buffer)
+ break;
+ rqb_buffer->hrq = hrq;
+ rqb_buffer->drq = drq;
+ rqb_buffer->idx = idx;
+ list_add_tail(&rqb_buffer->hbuf.list, &rqb_buf_list);
+ }
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+ while (!list_empty(&rqb_buf_list)) {
+ list_remove_head(&rqb_buf_list, rqb_buffer, struct rqb_dmabuf,
+ hbuf.list);
+
+ hrqe.address_lo = putPaddrLow(rqb_buffer->hbuf.phys);
+ hrqe.address_hi = putPaddrHigh(rqb_buffer->hbuf.phys);
+ drqe.address_lo = putPaddrLow(rqb_buffer->dbuf.phys);
+ drqe.address_hi = putPaddrHigh(rqb_buffer->dbuf.phys);
+ rc = lpfc_sli4_rq_put(hrq, drq, &hrqe, &drqe);
+ if (rc < 0) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6421 Cannot post to HRQ %d: %x %x %x "
+ "DRQ %x %x\n",
+ hrq->queue_id,
+ hrq->host_index,
+ hrq->hba_index,
+ hrq->entry_count,
+ drq->host_index,
+ drq->hba_index);
+ rqbp->rqb_free_buffer(phba, rqb_buffer);
+ } else {
+ list_add_tail(&rqb_buffer->hbuf.list,
+ &rqbp->rqb_buffer_list);
+ rqbp->buffer_count++;
+ }
+ }
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ return 1;
+}
+
+static void
+lpfc_mbx_cmpl_read_lds_params(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+{
+ union lpfc_sli4_cfg_shdr *shdr;
+ u32 shdr_status, shdr_add_status;
+
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || pmb->u.mb.mbxStatus) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_LDS_EVENT | LOG_MBOX,
+ "4622 SET_FEATURE (x%x) mbox failed, "
+ "status x%x add_status x%x, mbx status x%x\n",
+ LPFC_SET_LD_SIGNAL, shdr_status,
+ shdr_add_status, pmb->u.mb.mbxStatus);
+ phba->degrade_activate_threshold = 0;
+ phba->degrade_deactivate_threshold = 0;
+ phba->fec_degrade_interval = 0;
+ goto out;
+ }
+
+ phba->degrade_activate_threshold = pmb->u.mqe.un.set_feature.word7;
+ phba->degrade_deactivate_threshold = pmb->u.mqe.un.set_feature.word8;
+ phba->fec_degrade_interval = pmb->u.mqe.un.set_feature.word10;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_LDS_EVENT,
+ "4624 Success: da x%x dd x%x interval x%x\n",
+ phba->degrade_activate_threshold,
+ phba->degrade_deactivate_threshold,
+ phba->fec_degrade_interval);
+out:
+ mempool_free(pmb, phba->mbox_mem_pool);
+}
+
+int
+lpfc_read_lds_params(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *mboxq;
+ int rc;
+
+ mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ return -ENOMEM;
+
+ lpfc_set_features(phba, mboxq, LPFC_SET_LD_SIGNAL);
+ mboxq->vport = phba->pport;
+ mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_lds_params;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ mempool_free(mboxq, phba->mbox_mem_pool);
+ return -EIO;
+ }
+ return 0;
+}
+
+static void
+lpfc_mbx_cmpl_cgn_set_ftrs(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+{
+ struct lpfc_vport *vport = pmb->vport;
+ union lpfc_sli4_cfg_shdr *shdr;
+ u32 shdr_status, shdr_add_status;
+ u32 sig, acqe;
+
+ /* Two outcomes. (1) Set featurs was successul and EDC negotiation
+ * is done. (2) Mailbox failed and send FPIN support only.
+ */
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || pmb->u.mb.mbxStatus) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_CGN_MGMT,
+ "2516 CGN SET_FEATURE mbox failed with "
+ "status x%x add_status x%x, mbx status x%x "
+ "Reset Congestion to FPINs only\n",
+ shdr_status, shdr_add_status,
+ pmb->u.mb.mbxStatus);
+ /* If there is a mbox error, move on to RDF */
+ phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
+ phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
+ goto out;
+ }
+
+ /* Zero out Congestion Signal ACQE counter */
+ phba->cgn_acqe_cnt = 0;
+
+ acqe = bf_get(lpfc_mbx_set_feature_CGN_acqe_freq,
+ &pmb->u.mqe.un.set_feature);
+ sig = bf_get(lpfc_mbx_set_feature_CGN_warn_freq,
+ &pmb->u.mqe.un.set_feature);
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "4620 SET_FEATURES Success: Freq: %ds %dms "
+ " Reg: x%x x%x\n", acqe, sig,
+ phba->cgn_reg_signal, phba->cgn_reg_fpin);
+out:
+ mempool_free(pmb, phba->mbox_mem_pool);
+
+ /* Register for FPIN events from the fabric now that the
+ * EDC common_set_features has completed.
+ */
+ lpfc_issue_els_rdf(vport, 0);
+}
+
+int
+lpfc_config_cgn_signal(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *mboxq;
+ u32 rc;
+
+ mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ goto out_rdf;
+
+ lpfc_set_features(phba, mboxq, LPFC_SET_CGN_SIGNAL);
+ mboxq->vport = phba->pport;
+ mboxq->mbox_cmpl = lpfc_mbx_cmpl_cgn_set_ftrs;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "4621 SET_FEATURES: FREQ sig x%x acqe x%x: "
+ "Reg: x%x x%x\n",
+ phba->cgn_sig_freq, lpfc_acqe_cgn_frequency,
+ phba->cgn_reg_signal, phba->cgn_reg_fpin);
+
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED)
+ goto out;
+ return 0;
+
+out:
+ mempool_free(mboxq, phba->mbox_mem_pool);
+out_rdf:
+ /* If there is a mbox error, move on to RDF */
+ phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
+ phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
+ lpfc_issue_els_rdf(phba->pport, 0);
+ return -EIO;
+}
+
+/**
+ * lpfc_init_idle_stat_hb - Initialize idle_stat tracking
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine initializes the per-cq idle_stat to dynamically dictate
+ * polling decisions.
+ *
+ * Return codes:
+ * None
+ **/
+static void lpfc_init_idle_stat_hb(struct lpfc_hba *phba)
+{
+ int i;
+ struct lpfc_sli4_hdw_queue *hdwq;
+ struct lpfc_queue *cq;
+ struct lpfc_idle_stat *idle_stat;
+ u64 wall;
+
+ for_each_present_cpu(i) {
+ hdwq = &phba->sli4_hba.hdwq[phba->sli4_hba.cpu_map[i].hdwq];
+ cq = hdwq->io_cq;
+
+ /* Skip if we've already handled this cq's primary CPU */
+ if (cq->chann != i)
+ continue;
+
+ idle_stat = &phba->sli4_hba.idle_stat[i];
+
+ idle_stat->prev_idle = get_cpu_idle_time(i, &wall, 1);
+ idle_stat->prev_wall = wall;
+
+ if (phba->nvmet_support ||
+ phba->cmf_active_mode != LPFC_CFG_OFF)
+ cq->poll_mode = LPFC_QUEUE_WORK;
+ else
+ cq->poll_mode = LPFC_IRQ_POLL;
+ }
+
+ if (!phba->nvmet_support)
+ schedule_delayed_work(&phba->idle_stat_delay_work,
+ msecs_to_jiffies(LPFC_IDLE_STAT_DELAY));
+}
+
+static void lpfc_sli4_dip(struct lpfc_hba *phba)
+{
+ uint32_t if_type;
+
+ if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
+ if (if_type == LPFC_SLI_INTF_IF_TYPE_2 ||
+ if_type == LPFC_SLI_INTF_IF_TYPE_6) {
+ struct lpfc_register reg_data;
+
+ if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
+ &reg_data.word0))
+ return;
+
+ if (bf_get(lpfc_sliport_status_dip, &reg_data))
+ lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+ "2904 Firmware Dump Image Present"
+ " on Adapter");
+ }
+}
+
+/**
+ * lpfc_rx_monitor_create_ring - Initialize ring buffer for rx_monitor
+ * @rx_monitor: Pointer to lpfc_rx_info_monitor object
+ * @entries: Number of rx_info_entry objects to allocate in ring
+ *
+ * Return:
+ * 0 - Success
+ * ENOMEM - Failure to kmalloc
+ **/
+int lpfc_rx_monitor_create_ring(struct lpfc_rx_info_monitor *rx_monitor,
+ u32 entries)
+{
+ rx_monitor->ring = kmalloc_array(entries, sizeof(struct rx_info_entry),
+ GFP_KERNEL);
+ if (!rx_monitor->ring)
+ return -ENOMEM;
+
+ rx_monitor->head_idx = 0;
+ rx_monitor->tail_idx = 0;
+ spin_lock_init(&rx_monitor->lock);
+ rx_monitor->entries = entries;
+
+ return 0;
+}
+
+/**
+ * lpfc_rx_monitor_destroy_ring - Free ring buffer for rx_monitor
+ * @rx_monitor: Pointer to lpfc_rx_info_monitor object
+ **/
+void lpfc_rx_monitor_destroy_ring(struct lpfc_rx_info_monitor *rx_monitor)
+{
+ spin_lock(&rx_monitor->lock);
+ kfree(rx_monitor->ring);
+ rx_monitor->ring = NULL;
+ rx_monitor->entries = 0;
+ rx_monitor->head_idx = 0;
+ rx_monitor->tail_idx = 0;
+ spin_unlock(&rx_monitor->lock);
+}
+
+/**
+ * lpfc_rx_monitor_record - Insert an entry into rx_monitor's ring
+ * @rx_monitor: Pointer to lpfc_rx_info_monitor object
+ * @entry: Pointer to rx_info_entry
+ *
+ * Used to insert an rx_info_entry into rx_monitor's ring. Note that this is a
+ * deep copy of rx_info_entry not a shallow copy of the rx_info_entry ptr.
+ *
+ * This is called from lpfc_cmf_timer, which is in timer/softirq context.
+ *
+ * In cases of old data overflow, we do a best effort of FIFO order.
+ **/
+void lpfc_rx_monitor_record(struct lpfc_rx_info_monitor *rx_monitor,
+ struct rx_info_entry *entry)
+{
+ struct rx_info_entry *ring = rx_monitor->ring;
+ u32 *head_idx = &rx_monitor->head_idx;
+ u32 *tail_idx = &rx_monitor->tail_idx;
+ spinlock_t *ring_lock = &rx_monitor->lock;
+ u32 ring_size = rx_monitor->entries;
+
+ spin_lock(ring_lock);
+ memcpy(&ring[*tail_idx], entry, sizeof(*entry));
+ *tail_idx = (*tail_idx + 1) % ring_size;
+
+ /* Best effort of FIFO saved data */
+ if (*tail_idx == *head_idx)
+ *head_idx = (*head_idx + 1) % ring_size;
+
+ spin_unlock(ring_lock);
+}
+
+/**
+ * lpfc_rx_monitor_report - Read out rx_monitor's ring
+ * @phba: Pointer to lpfc_hba object
+ * @rx_monitor: Pointer to lpfc_rx_info_monitor object
+ * @buf: Pointer to char buffer that will contain rx monitor info data
+ * @buf_len: Length buf including null char
+ * @max_read_entries: Maximum number of entries to read out of ring
+ *
+ * Used to dump/read what's in rx_monitor's ring buffer.
+ *
+ * If buf is NULL || buf_len == 0, then it is implied that we want to log the
+ * information to kmsg instead of filling out buf.
+ *
+ * Return:
+ * Number of entries read out of the ring
+ **/
+u32 lpfc_rx_monitor_report(struct lpfc_hba *phba,
+ struct lpfc_rx_info_monitor *rx_monitor, char *buf,
+ u32 buf_len, u32 max_read_entries)
+{
+ struct rx_info_entry *ring = rx_monitor->ring;
+ struct rx_info_entry *entry;
+ u32 *head_idx = &rx_monitor->head_idx;
+ u32 *tail_idx = &rx_monitor->tail_idx;
+ spinlock_t *ring_lock = &rx_monitor->lock;
+ u32 ring_size = rx_monitor->entries;
+ u32 cnt = 0;
+ char tmp[DBG_LOG_STR_SZ] = {0};
+ bool log_to_kmsg = (!buf || !buf_len) ? true : false;
+
+ if (!log_to_kmsg) {
+ /* clear the buffer to be sure */
+ memset(buf, 0, buf_len);
+
+ scnprintf(buf, buf_len, "\t%-16s%-16s%-16s%-16s%-8s%-8s%-8s"
+ "%-8s%-8s%-8s%-16s\n",
+ "MaxBPI", "Tot_Data_CMF",
+ "Tot_Data_Cmd", "Tot_Data_Cmpl",
+ "Lat(us)", "Avg_IO", "Max_IO", "Bsy",
+ "IO_cnt", "Info", "BWutil(ms)");
+ }
+
+ /* Needs to be _irq because record is called from timer interrupt
+ * context
+ */
+ spin_lock_irq(ring_lock);
+ while (*head_idx != *tail_idx) {
+ entry = &ring[*head_idx];
+
+ /* Read out this entry's data. */
+ if (!log_to_kmsg) {
+ /* If !log_to_kmsg, then store to buf. */
+ scnprintf(tmp, sizeof(tmp),
+ "%03d:\t%-16llu%-16llu%-16llu%-16llu%-8llu"
+ "%-8llu%-8llu%-8u%-8u%-8u%u(%u)\n",
+ *head_idx, entry->max_bytes_per_interval,
+ entry->cmf_bytes, entry->total_bytes,
+ entry->rcv_bytes, entry->avg_io_latency,
+ entry->avg_io_size, entry->max_read_cnt,
+ entry->cmf_busy, entry->io_cnt,
+ entry->cmf_info, entry->timer_utilization,
+ entry->timer_interval);
+
+ /* Check for buffer overflow */
+ if ((strlen(buf) + strlen(tmp)) >= buf_len)
+ break;
+
+ /* Append entry's data to buffer */
+ strlcat(buf, tmp, buf_len);
+ } else {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "4410 %02u: MBPI %llu Xmit %llu "
+ "Cmpl %llu Lat %llu ASz %llu Info %02u "
+ "BWUtil %u Int %u slot %u\n",
+ cnt, entry->max_bytes_per_interval,
+ entry->total_bytes, entry->rcv_bytes,
+ entry->avg_io_latency,
+ entry->avg_io_size, entry->cmf_info,
+ entry->timer_utilization,
+ entry->timer_interval, *head_idx);
+ }
+
+ *head_idx = (*head_idx + 1) % ring_size;
+
+ /* Don't feed more than max_read_entries */
+ cnt++;
+ if (cnt >= max_read_entries)
+ break;
+ }
+ spin_unlock_irq(ring_lock);
+
+ return cnt;
+}
+
+/**
+ * lpfc_cmf_setup - Initialize idle_stat tracking
+ * @phba: Pointer to HBA context object.
+ *
+ * This is called from HBA setup during driver load or when the HBA
+ * comes online. this does all the initialization to support CMF and MI.
+ **/
+static int
+lpfc_cmf_setup(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *mboxq;
+ struct lpfc_dmabuf *mp;
+ struct lpfc_pc_sli4_params *sli4_params;
+ int rc, cmf, mi_ver;
+
+ rc = lpfc_sli4_refresh_params(phba);
+ if (unlikely(rc))
+ return rc;
+
+ mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ return -ENOMEM;
+
+ sli4_params = &phba->sli4_hba.pc_sli4_params;
+
+ /* Always try to enable MI feature if we can */
+ if (sli4_params->mi_ver) {
+ lpfc_set_features(phba, mboxq, LPFC_SET_ENABLE_MI);
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ mi_ver = bf_get(lpfc_mbx_set_feature_mi,
+ &mboxq->u.mqe.un.set_feature);
+
+ if (rc == MBX_SUCCESS) {
+ if (mi_ver) {
+ lpfc_printf_log(phba,
+ KERN_WARNING, LOG_CGN_MGMT,
+ "6215 MI is enabled\n");
+ sli4_params->mi_ver = mi_ver;
+ } else {
+ lpfc_printf_log(phba,
+ KERN_WARNING, LOG_CGN_MGMT,
+ "6338 MI is disabled\n");
+ sli4_params->mi_ver = 0;
+ }
+ } else {
+ /* mi_ver is already set from GET_SLI4_PARAMETERS */
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_CGN_MGMT | LOG_INIT,
+ "6245 Enable MI Mailbox x%x (x%x/x%x) "
+ "failed, rc:x%x mi:x%x\n",
+ bf_get(lpfc_mqe_command, &mboxq->u.mqe),
+ lpfc_sli_config_mbox_subsys_get
+ (phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get
+ (phba, mboxq),
+ rc, sli4_params->mi_ver);
+ }
+ } else {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
+ "6217 MI is disabled\n");
+ }
+
+ /* Ensure FDMI is enabled for MI if enable_mi is set */
+ if (sli4_params->mi_ver)
+ phba->cfg_fdmi_on = LPFC_FDMI_SUPPORT;
+
+ /* Always try to enable CMF feature if we can */
+ if (sli4_params->cmf) {
+ lpfc_set_features(phba, mboxq, LPFC_SET_ENABLE_CMF);
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ cmf = bf_get(lpfc_mbx_set_feature_cmf,
+ &mboxq->u.mqe.un.set_feature);
+ if (rc == MBX_SUCCESS && cmf) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
+ "6218 CMF is enabled: mode %d\n",
+ phba->cmf_active_mode);
+ } else {
+ lpfc_printf_log(phba, KERN_WARNING,
+ LOG_CGN_MGMT | LOG_INIT,
+ "6219 Enable CMF Mailbox x%x (x%x/x%x) "
+ "failed, rc:x%x dd:x%x\n",
+ bf_get(lpfc_mqe_command, &mboxq->u.mqe),
+ lpfc_sli_config_mbox_subsys_get
+ (phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get
+ (phba, mboxq),
+ rc, cmf);
+ sli4_params->cmf = 0;
+ phba->cmf_active_mode = LPFC_CFG_OFF;
+ goto no_cmf;
+ }
+
+ /* Allocate Congestion Information Buffer */
+ if (!phba->cgn_i) {
+ mp = kmalloc(sizeof(*mp), GFP_KERNEL);
+ if (mp)
+ mp->virt = dma_alloc_coherent
+ (&phba->pcidev->dev,
+ sizeof(struct lpfc_cgn_info),
+ &mp->phys, GFP_KERNEL);
+ if (!mp || !mp->virt) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "2640 Failed to alloc memory "
+ "for Congestion Info\n");
+ kfree(mp);
+ sli4_params->cmf = 0;
+ phba->cmf_active_mode = LPFC_CFG_OFF;
+ goto no_cmf;
+ }
+ phba->cgn_i = mp;
+
+ /* initialize congestion buffer info */
+ lpfc_init_congestion_buf(phba);
+ lpfc_init_congestion_stat(phba);
+
+ /* Zero out Congestion Signal counters */
+ atomic64_set(&phba->cgn_acqe_stat.alarm, 0);
+ atomic64_set(&phba->cgn_acqe_stat.warn, 0);
+ }
+
+ rc = lpfc_sli4_cgn_params_read(phba);
+ if (rc < 0) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
+ "6242 Error reading Cgn Params (%d)\n",
+ rc);
+ /* Ensure CGN Mode is off */
+ sli4_params->cmf = 0;
+ } else if (!rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
+ "6243 CGN Event empty object.\n");
+ /* Ensure CGN Mode is off */
+ sli4_params->cmf = 0;
+ }
+ } else {
+no_cmf:
+ lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
+ "6220 CMF is disabled\n");
+ }
+
+ /* Only register congestion buffer with firmware if BOTH
+ * CMF and E2E are enabled.
+ */
+ if (sli4_params->cmf && sli4_params->mi_ver) {
+ rc = lpfc_reg_congestion_buf(phba);
+ if (rc) {
+ dma_free_coherent(&phba->pcidev->dev,
+ sizeof(struct lpfc_cgn_info),
+ phba->cgn_i->virt, phba->cgn_i->phys);
+ kfree(phba->cgn_i);
+ phba->cgn_i = NULL;
+ /* Ensure CGN Mode is off */
+ phba->cmf_active_mode = LPFC_CFG_OFF;
+ return 0;
+ }
+ }
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "6470 Setup MI version %d CMF %d mode %d\n",
+ sli4_params->mi_ver, sli4_params->cmf,
+ phba->cmf_active_mode);
+
+ mempool_free(mboxq, phba->mbox_mem_pool);
+
+ /* Initialize atomic counters */
+ atomic_set(&phba->cgn_fabric_warn_cnt, 0);
+ atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
+ atomic_set(&phba->cgn_sync_alarm_cnt, 0);
+ atomic_set(&phba->cgn_sync_warn_cnt, 0);
+ atomic_set(&phba->cgn_driver_evt_cnt, 0);
+ atomic_set(&phba->cgn_latency_evt_cnt, 0);
+ atomic64_set(&phba->cgn_latency_evt, 0);
+
+ phba->cmf_interval_rate = LPFC_CMF_INTERVAL;
+
+ /* Allocate RX Monitor Buffer */
+ if (!phba->rx_monitor) {
+ phba->rx_monitor = kzalloc(sizeof(*phba->rx_monitor),
+ GFP_KERNEL);
+
+ if (!phba->rx_monitor) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "2644 Failed to alloc memory "
+ "for RX Monitor Buffer\n");
+ return -ENOMEM;
+ }
+
+ /* Instruct the rx_monitor object to instantiate its ring */
+ if (lpfc_rx_monitor_create_ring(phba->rx_monitor,
+ LPFC_MAX_RXMONITOR_ENTRY)) {
+ kfree(phba->rx_monitor);
+ phba->rx_monitor = NULL;
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "2645 Failed to alloc memory "
+ "for RX Monitor's Ring\n");
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+}
+
+static int
+lpfc_set_host_tm(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *mboxq;
+ uint32_t len, rc;
+ struct timespec64 cur_time;
+ struct tm broken;
+ uint32_t month, day, year;
+ uint32_t hour, minute, second;
+ struct lpfc_mbx_set_host_date_time *tm;
+
+ mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ return -ENOMEM;
+
+ len = sizeof(struct lpfc_mbx_set_host_data) -
+ sizeof(struct lpfc_sli4_cfg_mhdr);
+ lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_SET_HOST_DATA, len,
+ LPFC_SLI4_MBX_EMBED);
+
+ mboxq->u.mqe.un.set_host_data.param_id = LPFC_SET_HOST_DATE_TIME;
+ mboxq->u.mqe.un.set_host_data.param_len =
+ sizeof(struct lpfc_mbx_set_host_date_time);
+ tm = &mboxq->u.mqe.un.set_host_data.un.tm;
+ ktime_get_real_ts64(&cur_time);
+ time64_to_tm(cur_time.tv_sec, 0, &broken);
+ month = broken.tm_mon + 1;
+ day = broken.tm_mday;
+ year = broken.tm_year - 100;
+ hour = broken.tm_hour;
+ minute = broken.tm_min;
+ second = broken.tm_sec;
+ bf_set(lpfc_mbx_set_host_month, tm, month);
+ bf_set(lpfc_mbx_set_host_day, tm, day);
+ bf_set(lpfc_mbx_set_host_year, tm, year);
+ bf_set(lpfc_mbx_set_host_hour, tm, hour);
+ bf_set(lpfc_mbx_set_host_min, tm, minute);
+ bf_set(lpfc_mbx_set_host_sec, tm, second);
+
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ mempool_free(mboxq, phba->mbox_mem_pool);
+ return rc;
+}
+
+/**
+ * lpfc_sli4_hba_setup - SLI4 device initialization PCI function
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is the main SLI4 device initialization PCI function. This
+ * function is called by the HBA initialization code, HBA reset code and
+ * HBA error attention handler code. Caller is not required to hold any
+ * locks.
+ **/
+int
+lpfc_sli4_hba_setup(struct lpfc_hba *phba)
+{
+ int rc, i, cnt, len, dd;
+ LPFC_MBOXQ_t *mboxq;
+ struct lpfc_mqe *mqe;
+ uint8_t *vpd;
+ uint32_t vpd_size;
+ uint32_t ftr_rsp = 0;
+ struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
+ struct lpfc_vport *vport = phba->pport;
+ struct lpfc_dmabuf *mp;
+ struct lpfc_rqb *rqbp;
+ u32 flg;
+
+ /* Perform a PCI function reset to start from clean */
+ rc = lpfc_pci_function_reset(phba);
+ if (unlikely(rc))
+ return -ENODEV;
+
+ /* Check the HBA Host Status Register for readyness */
+ rc = lpfc_sli4_post_status_check(phba);
+ if (unlikely(rc))
+ return -ENODEV;
+ else {
+ spin_lock_irq(&phba->hbalock);
+ phba->sli.sli_flag |= LPFC_SLI_ACTIVE;
+ flg = phba->sli.sli_flag;
+ spin_unlock_irq(&phba->hbalock);
+ /* Allow a little time after setting SLI_ACTIVE for any polled
+ * MBX commands to complete via BSG.
+ */
+ for (i = 0; i < 50 && (flg & LPFC_SLI_MBOX_ACTIVE); i++) {
+ msleep(20);
+ spin_lock_irq(&phba->hbalock);
+ flg = phba->sli.sli_flag;
+ spin_unlock_irq(&phba->hbalock);
+ }
+ }
+ phba->hba_flag &= ~HBA_SETUP;
+
+ lpfc_sli4_dip(phba);
+
+ /*
+ * Allocate a single mailbox container for initializing the
+ * port.
+ */
+ mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ return -ENOMEM;
+
+ /* Issue READ_REV to collect vpd and FW information. */
+ vpd_size = SLI4_PAGE_SIZE;
+ vpd = kzalloc(vpd_size, GFP_KERNEL);
+ if (!vpd) {
+ rc = -ENOMEM;
+ goto out_free_mbox;
+ }
+
+ rc = lpfc_sli4_read_rev(phba, mboxq, vpd, &vpd_size);
+ if (unlikely(rc)) {
+ kfree(vpd);
+ goto out_free_mbox;
+ }
+
+ mqe = &mboxq->u.mqe;
+ phba->sli_rev = bf_get(lpfc_mbx_rd_rev_sli_lvl, &mqe->un.read_rev);
+ if (bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev)) {
+ phba->hba_flag |= HBA_FCOE_MODE;
+ phba->fcp_embed_io = 0; /* SLI4 FC support only */
+ } else {
+ phba->hba_flag &= ~HBA_FCOE_MODE;
+ }
+
+ if (bf_get(lpfc_mbx_rd_rev_cee_ver, &mqe->un.read_rev) ==
+ LPFC_DCBX_CEE_MODE)
+ phba->hba_flag |= HBA_FIP_SUPPORT;
+ else
+ phba->hba_flag &= ~HBA_FIP_SUPPORT;
+
+ phba->hba_flag &= ~HBA_IOQ_FLUSH;
+
+ if (phba->sli_rev != LPFC_SLI_REV4) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0376 READ_REV Error. SLI Level %d "
+ "FCoE enabled %d\n",
+ phba->sli_rev, phba->hba_flag & HBA_FCOE_MODE);
+ rc = -EIO;
+ kfree(vpd);
+ goto out_free_mbox;
+ }
+
+ rc = lpfc_set_host_tm(phba);
+ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT,
+ "6468 Set host date / time: Status x%x:\n", rc);
+
+ /*
+ * Continue initialization with default values even if driver failed
+ * to read FCoE param config regions, only read parameters if the
+ * board is FCoE
+ */
+ if (phba->hba_flag & HBA_FCOE_MODE &&
+ lpfc_sli4_read_fcoe_params(phba))
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_INIT,
+ "2570 Failed to read FCoE parameters\n");
+
+ /*
+ * Retrieve sli4 device physical port name, failure of doing it
+ * is considered as non-fatal.
+ */
+ rc = lpfc_sli4_retrieve_pport_name(phba);
+ if (!rc)
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "3080 Successful retrieving SLI4 device "
+ "physical port name: %s.\n", phba->Port);
+
+ rc = lpfc_sli4_get_ctl_attr(phba);
+ if (!rc)
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "8351 Successful retrieving SLI4 device "
+ "CTL ATTR\n");
+
+ /*
+ * Evaluate the read rev and vpd data. Populate the driver
+ * state with the results. If this routine fails, the failure
+ * is not fatal as the driver will use generic values.
+ */
+ rc = lpfc_parse_vpd(phba, vpd, vpd_size);
+ if (unlikely(!rc)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0377 Error %d parsing vpd. "
+ "Using defaults.\n", rc);
+ rc = 0;
+ }
+ kfree(vpd);
+
+ /* Save information as VPD data */
+ phba->vpd.rev.biuRev = mqe->un.read_rev.first_hw_rev;
+ phba->vpd.rev.smRev = mqe->un.read_rev.second_hw_rev;
+
+ /*
+ * This is because first G7 ASIC doesn't support the standard
+ * 0x5a NVME cmd descriptor type/subtype
+ */
+ if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
+ LPFC_SLI_INTF_IF_TYPE_6) &&
+ (phba->vpd.rev.biuRev == LPFC_G7_ASIC_1) &&
+ (phba->vpd.rev.smRev == 0) &&
+ (phba->cfg_nvme_embed_cmd == 1))
+ phba->cfg_nvme_embed_cmd = 0;
+
+ phba->vpd.rev.endecRev = mqe->un.read_rev.third_hw_rev;
+ phba->vpd.rev.fcphHigh = bf_get(lpfc_mbx_rd_rev_fcph_high,
+ &mqe->un.read_rev);
+ phba->vpd.rev.fcphLow = bf_get(lpfc_mbx_rd_rev_fcph_low,
+ &mqe->un.read_rev);
+ phba->vpd.rev.feaLevelHigh = bf_get(lpfc_mbx_rd_rev_ftr_lvl_high,
+ &mqe->un.read_rev);
+ phba->vpd.rev.feaLevelLow = bf_get(lpfc_mbx_rd_rev_ftr_lvl_low,
+ &mqe->un.read_rev);
+ phba->vpd.rev.sli1FwRev = mqe->un.read_rev.fw_id_rev;
+ memcpy(phba->vpd.rev.sli1FwName, mqe->un.read_rev.fw_name, 16);
+ phba->vpd.rev.sli2FwRev = mqe->un.read_rev.ulp_fw_id_rev;
+ memcpy(phba->vpd.rev.sli2FwName, mqe->un.read_rev.ulp_fw_name, 16);
+ phba->vpd.rev.opFwRev = mqe->un.read_rev.fw_id_rev;
+ memcpy(phba->vpd.rev.opFwName, mqe->un.read_rev.fw_name, 16);
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "(%d):0380 READ_REV Status x%x "
+ "fw_rev:%s fcphHi:%x fcphLo:%x flHi:%x flLo:%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0,
+ bf_get(lpfc_mqe_status, mqe),
+ phba->vpd.rev.opFwName,
+ phba->vpd.rev.fcphHigh, phba->vpd.rev.fcphLow,
+ phba->vpd.rev.feaLevelHigh, phba->vpd.rev.feaLevelLow);
+
+ if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
+ LPFC_SLI_INTF_IF_TYPE_0) {
+ lpfc_set_features(phba, mboxq, LPFC_SET_UE_RECOVERY);
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (rc == MBX_SUCCESS) {
+ phba->hba_flag |= HBA_RECOVERABLE_UE;
+ /* Set 1Sec interval to detect UE */
+ phba->eratt_poll_interval = 1;
+ phba->sli4_hba.ue_to_sr = bf_get(
+ lpfc_mbx_set_feature_UESR,
+ &mboxq->u.mqe.un.set_feature);
+ phba->sli4_hba.ue_to_rp = bf_get(
+ lpfc_mbx_set_feature_UERP,
+ &mboxq->u.mqe.un.set_feature);
+ }
+ }
+
+ if (phba->cfg_enable_mds_diags && phba->mds_diags_support) {
+ /* Enable MDS Diagnostics only if the SLI Port supports it */
+ lpfc_set_features(phba, mboxq, LPFC_SET_MDS_DIAGS);
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (rc != MBX_SUCCESS)
+ phba->mds_diags_support = 0;
+ }
+
+ /*
+ * Discover the port's supported feature set and match it against the
+ * hosts requests.
+ */
+ lpfc_request_features(phba, mboxq);
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (unlikely(rc)) {
+ rc = -EIO;
+ goto out_free_mbox;
+ }
+
+ /* Disable VMID if app header is not supported */
+ if (phba->cfg_vmid_app_header && !(bf_get(lpfc_mbx_rq_ftr_rsp_ashdr,
+ &mqe->un.req_ftrs))) {
+ bf_set(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags, 0);
+ phba->cfg_vmid_app_header = 0;
+ lpfc_printf_log(phba, KERN_DEBUG, LOG_SLI,
+ "1242 vmid feature not supported\n");
+ }
+
+ /*
+ * The port must support FCP initiator mode as this is the
+ * only mode running in the host.
+ */
+ if (!(bf_get(lpfc_mbx_rq_ftr_rsp_fcpi, &mqe->un.req_ftrs))) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+ "0378 No support for fcpi mode.\n");
+ ftr_rsp++;
+ }
+
+ /* Performance Hints are ONLY for FCoE */
+ if (phba->hba_flag & HBA_FCOE_MODE) {
+ if (bf_get(lpfc_mbx_rq_ftr_rsp_perfh, &mqe->un.req_ftrs))
+ phba->sli3_options |= LPFC_SLI4_PERFH_ENABLED;
+ else
+ phba->sli3_options &= ~LPFC_SLI4_PERFH_ENABLED;
+ }
+
+ /*
+ * If the port cannot support the host's requested features
+ * then turn off the global config parameters to disable the
+ * feature in the driver. This is not a fatal error.
+ */
+ if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
+ if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs))) {
+ phba->cfg_enable_bg = 0;
+ phba->sli3_options &= ~LPFC_SLI3_BG_ENABLED;
+ ftr_rsp++;
+ }
+ }
+
+ if (phba->max_vpi && phba->cfg_enable_npiv &&
+ !(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
+ ftr_rsp++;
+
+ if (ftr_rsp) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+ "0379 Feature Mismatch Data: x%08x %08x "
+ "x%x x%x x%x\n", mqe->un.req_ftrs.word2,
+ mqe->un.req_ftrs.word3, phba->cfg_enable_bg,
+ phba->cfg_enable_npiv, phba->max_vpi);
+ if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs)))
+ phba->cfg_enable_bg = 0;
+ if (!(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
+ phba->cfg_enable_npiv = 0;
+ }
+
+ /* These SLI3 features are assumed in SLI4 */
+ spin_lock_irq(&phba->hbalock);
+ phba->sli3_options |= (LPFC_SLI3_NPIV_ENABLED | LPFC_SLI3_HBQ_ENABLED);
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Always try to enable dual dump feature if we can */
+ lpfc_set_features(phba, mboxq, LPFC_SET_DUAL_DUMP);
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ dd = bf_get(lpfc_mbx_set_feature_dd, &mboxq->u.mqe.un.set_feature);
+ if ((rc == MBX_SUCCESS) && (dd == LPFC_ENABLE_DUAL_DUMP))
+ lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+ "6448 Dual Dump is enabled\n");
+ else
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI | LOG_INIT,
+ "6447 Dual Dump Mailbox x%x (x%x/x%x) failed, "
+ "rc:x%x dd:x%x\n",
+ bf_get(lpfc_mqe_command, &mboxq->u.mqe),
+ lpfc_sli_config_mbox_subsys_get(
+ phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(
+ phba, mboxq),
+ rc, dd);
+ /*
+ * Allocate all resources (xri,rpi,vpi,vfi) now. Subsequent
+ * calls depends on these resources to complete port setup.
+ */
+ rc = lpfc_sli4_alloc_resource_identifiers(phba);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2920 Failed to alloc Resource IDs "
+ "rc = x%x\n", rc);
+ goto out_free_mbox;
+ }
+
+ lpfc_set_host_data(phba, mboxq);
+
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+ "2134 Failed to set host os driver version %x",
+ rc);
+ }
+
+ /* Read the port's service parameters. */
+ rc = lpfc_read_sparam(phba, mboxq, vport->vpi);
+ if (rc) {
+ phba->link_state = LPFC_HBA_ERROR;
+ rc = -ENOMEM;
+ goto out_free_mbox;
+ }
+
+ mboxq->vport = vport;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ mp = (struct lpfc_dmabuf *)mboxq->ctx_buf;
+ if (rc == MBX_SUCCESS) {
+ memcpy(&vport->fc_sparam, mp->virt, sizeof(struct serv_parm));
+ rc = 0;
+ }
+
+ /*
+ * This memory was allocated by the lpfc_read_sparam routine but is
+ * no longer needed. It is released and ctx_buf NULLed to prevent
+ * unintended pointer access as the mbox is reused.
+ */
+ lpfc_mbuf_free(phba, mp->virt, mp->phys);
+ kfree(mp);
+ mboxq->ctx_buf = NULL;
+ if (unlikely(rc)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0382 READ_SPARAM command failed "
+ "status %d, mbxStatus x%x\n",
+ rc, bf_get(lpfc_mqe_status, mqe));
+ phba->link_state = LPFC_HBA_ERROR;
+ rc = -EIO;
+ goto out_free_mbox;
+ }
+
+ lpfc_update_vport_wwn(vport);
+
+ /* Update the fc_host data structures with new wwn. */
+ fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
+ fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
+
+ /* Create all the SLI4 queues */
+ rc = lpfc_sli4_queue_create(phba);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3089 Failed to allocate queues\n");
+ rc = -ENODEV;
+ goto out_free_mbox;
+ }
+ /* Set up all the queues to the device */
+ rc = lpfc_sli4_queue_setup(phba);
+ if (unlikely(rc)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0381 Error %d during queue setup.\n ", rc);
+ goto out_stop_timers;
+ }
+ /* Initialize the driver internal SLI layer lists. */
+ lpfc_sli4_setup(phba);
+ lpfc_sli4_queue_init(phba);
+
+ /* update host els xri-sgl sizes and mappings */
+ rc = lpfc_sli4_els_sgl_update(phba);
+ if (unlikely(rc)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "1400 Failed to update xri-sgl size and "
+ "mapping: %d\n", rc);
+ goto out_destroy_queue;
+ }
+
+ /* register the els sgl pool to the port */
+ rc = lpfc_sli4_repost_sgl_list(phba, &phba->sli4_hba.lpfc_els_sgl_list,
+ phba->sli4_hba.els_xri_cnt);
+ if (unlikely(rc < 0)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0582 Error %d during els sgl post "
+ "operation\n", rc);
+ rc = -ENODEV;
+ goto out_destroy_queue;
+ }
+ phba->sli4_hba.els_xri_cnt = rc;
+
+ if (phba->nvmet_support) {
+ /* update host nvmet xri-sgl sizes and mappings */
+ rc = lpfc_sli4_nvmet_sgl_update(phba);
+ if (unlikely(rc)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6308 Failed to update nvmet-sgl size "
+ "and mapping: %d\n", rc);
+ goto out_destroy_queue;
+ }
+
+ /* register the nvmet sgl pool to the port */
+ rc = lpfc_sli4_repost_sgl_list(
+ phba,
+ &phba->sli4_hba.lpfc_nvmet_sgl_list,
+ phba->sli4_hba.nvmet_xri_cnt);
+ if (unlikely(rc < 0)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3117 Error %d during nvmet "
+ "sgl post\n", rc);
+ rc = -ENODEV;
+ goto out_destroy_queue;
+ }
+ phba->sli4_hba.nvmet_xri_cnt = rc;
+
+ /* We allocate an iocbq for every receive context SGL.
+ * The additional allocation is for abort and ls handling.
+ */
+ cnt = phba->sli4_hba.nvmet_xri_cnt +
+ phba->sli4_hba.max_cfg_param.max_xri;
+ } else {
+ /* update host common xri-sgl sizes and mappings */
+ rc = lpfc_sli4_io_sgl_update(phba);
+ if (unlikely(rc)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6082 Failed to update nvme-sgl size "
+ "and mapping: %d\n", rc);
+ goto out_destroy_queue;
+ }
+
+ /* register the allocated common sgl pool to the port */
+ rc = lpfc_sli4_repost_io_sgl_list(phba);
+ if (unlikely(rc)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6116 Error %d during nvme sgl post "
+ "operation\n", rc);
+ /* Some NVME buffers were moved to abort nvme list */
+ /* A pci function reset will repost them */
+ rc = -ENODEV;
+ goto out_destroy_queue;
+ }
+ /* Each lpfc_io_buf job structure has an iocbq element.
+ * This cnt provides for abort, els, ct and ls requests.
+ */
+ cnt = phba->sli4_hba.max_cfg_param.max_xri;
+ }
+
+ if (!phba->sli.iocbq_lookup) {
+ /* Initialize and populate the iocb list per host */
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "2821 initialize iocb list with %d entries\n",
+ cnt);
+ rc = lpfc_init_iocb_list(phba, cnt);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "1413 Failed to init iocb list.\n");
+ goto out_destroy_queue;
+ }
+ }
+
+ if (phba->nvmet_support)
+ lpfc_nvmet_create_targetport(phba);
+
+ if (phba->nvmet_support && phba->cfg_nvmet_mrq) {
+ /* Post initial buffers to all RQs created */
+ for (i = 0; i < phba->cfg_nvmet_mrq; i++) {
+ rqbp = phba->sli4_hba.nvmet_mrq_hdr[i]->rqbp;
+ INIT_LIST_HEAD(&rqbp->rqb_buffer_list);
+ rqbp->rqb_alloc_buffer = lpfc_sli4_nvmet_alloc;
+ rqbp->rqb_free_buffer = lpfc_sli4_nvmet_free;
+ rqbp->entry_count = LPFC_NVMET_RQE_DEF_COUNT;
+ rqbp->buffer_count = 0;
+
+ lpfc_post_rq_buffer(
+ phba, phba->sli4_hba.nvmet_mrq_hdr[i],
+ phba->sli4_hba.nvmet_mrq_data[i],
+ phba->cfg_nvmet_mrq_post, i);
+ }
+ }
+
+ /* Post the rpi header region to the device. */
+ rc = lpfc_sli4_post_all_rpi_hdrs(phba);
+ if (unlikely(rc)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0393 Error %d during rpi post operation\n",
+ rc);
+ rc = -ENODEV;
+ goto out_free_iocblist;
+ }
+ lpfc_sli4_node_prep(phba);
+
+ if (!(phba->hba_flag & HBA_FCOE_MODE)) {
+ if ((phba->nvmet_support == 0) || (phba->cfg_nvmet_mrq == 1)) {
+ /*
+ * The FC Port needs to register FCFI (index 0)
+ */
+ lpfc_reg_fcfi(phba, mboxq);
+ mboxq->vport = phba->pport;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (rc != MBX_SUCCESS)
+ goto out_unset_queue;
+ rc = 0;
+ phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi,
+ &mboxq->u.mqe.un.reg_fcfi);
+ } else {
+ /* We are a NVME Target mode with MRQ > 1 */
+
+ /* First register the FCFI */
+ lpfc_reg_fcfi_mrq(phba, mboxq, 0);
+ mboxq->vport = phba->pport;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (rc != MBX_SUCCESS)
+ goto out_unset_queue;
+ rc = 0;
+ phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_mrq_fcfi,
+ &mboxq->u.mqe.un.reg_fcfi_mrq);
+
+ /* Next register the MRQs */
+ lpfc_reg_fcfi_mrq(phba, mboxq, 1);
+ mboxq->vport = phba->pport;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (rc != MBX_SUCCESS)
+ goto out_unset_queue;
+ rc = 0;
+ }
+ /* Check if the port is configured to be disabled */
+ lpfc_sli_read_link_ste(phba);
+ }
+
+ /* Don't post more new bufs if repost already recovered
+ * the nvme sgls.
+ */
+ if (phba->nvmet_support == 0) {
+ if (phba->sli4_hba.io_xri_cnt == 0) {
+ len = lpfc_new_io_buf(
+ phba, phba->sli4_hba.io_xri_max);
+ if (len == 0) {
+ rc = -ENOMEM;
+ goto out_unset_queue;
+ }
+
+ if (phba->cfg_xri_rebalancing)
+ lpfc_create_multixri_pools(phba);
+ }
+ } else {
+ phba->cfg_xri_rebalancing = 0;
+ }
+
+ /* Allow asynchronous mailbox command to go through */
+ spin_lock_irq(&phba->hbalock);
+ phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Post receive buffers to the device */
+ lpfc_sli4_rb_setup(phba);
+
+ /* Reset HBA FCF states after HBA reset */
+ phba->fcf.fcf_flag = 0;
+ phba->fcf.current_rec.flag = 0;
+
+ /* Start the ELS watchdog timer */
+ mod_timer(&vport->els_tmofunc,
+ jiffies + msecs_to_jiffies(1000 * (phba->fc_ratov * 2)));
+
+ /* Start heart beat timer */
+ mod_timer(&phba->hb_tmofunc,
+ jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
+ phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
+ phba->last_completion_time = jiffies;
+
+ /* start eq_delay heartbeat */
+ if (phba->cfg_auto_imax)
+ queue_delayed_work(phba->wq, &phba->eq_delay_work,
+ msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
+
+ /* start per phba idle_stat_delay heartbeat */
+ lpfc_init_idle_stat_hb(phba);
+
+ /* Start error attention (ERATT) polling timer */
+ mod_timer(&phba->eratt_poll,
+ jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
+
+ /* Enable PCIe device Advanced Error Reporting (AER) if configured */
+ if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) {
+ rc = pci_enable_pcie_error_reporting(phba->pcidev);
+ if (!rc) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "2829 This device supports "
+ "Advanced Error Reporting (AER)\n");
+ spin_lock_irq(&phba->hbalock);
+ phba->hba_flag |= HBA_AER_ENABLED;
+ spin_unlock_irq(&phba->hbalock);
+ } else {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "2830 This device does not support "
+ "Advanced Error Reporting (AER)\n");
+ phba->cfg_aer_support = 0;
+ }
+ rc = 0;
+ }
+
+ /*
+ * The port is ready, set the host's link state to LINK_DOWN
+ * in preparation for link interrupts.
+ */
+ spin_lock_irq(&phba->hbalock);
+ phba->link_state = LPFC_LINK_DOWN;
+
+ /* Check if physical ports are trunked */
+ if (bf_get(lpfc_conf_trunk_port0, &phba->sli4_hba))
+ phba->trunk_link.link0.state = LPFC_LINK_DOWN;
+ if (bf_get(lpfc_conf_trunk_port1, &phba->sli4_hba))
+ phba->trunk_link.link1.state = LPFC_LINK_DOWN;
+ if (bf_get(lpfc_conf_trunk_port2, &phba->sli4_hba))
+ phba->trunk_link.link2.state = LPFC_LINK_DOWN;
+ if (bf_get(lpfc_conf_trunk_port3, &phba->sli4_hba))
+ phba->trunk_link.link3.state = LPFC_LINK_DOWN;
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Arm the CQs and then EQs on device */
+ lpfc_sli4_arm_cqeq_intr(phba);
+
+ /* Indicate device interrupt mode */
+ phba->sli4_hba.intr_enable = 1;
+
+ /* Setup CMF after HBA is initialized */
+ lpfc_cmf_setup(phba);
+
+ if (!(phba->hba_flag & HBA_FCOE_MODE) &&
+ (phba->hba_flag & LINK_DISABLED)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3103 Adapter Link is disabled.\n");
+ lpfc_down_link(phba, mboxq);
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (rc != MBX_SUCCESS) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3104 Adapter failed to issue "
+ "DOWN_LINK mbox cmd, rc:x%x\n", rc);
+ goto out_io_buff_free;
+ }
+ } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
+ /* don't perform init_link on SLI4 FC port loopback test */
+ if (!(phba->link_flag & LS_LOOPBACK_MODE)) {
+ rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
+ if (rc)
+ goto out_io_buff_free;
+ }
+ }
+ mempool_free(mboxq, phba->mbox_mem_pool);
+
+ /* Enable RAS FW log support */
+ lpfc_sli4_ras_setup(phba);
+
+ phba->hba_flag |= HBA_SETUP;
+ return rc;
+
+out_io_buff_free:
+ /* Free allocated IO Buffers */
+ lpfc_io_free(phba);
+out_unset_queue:
+ /* Unset all the queues set up in this routine when error out */
+ lpfc_sli4_queue_unset(phba);
+out_free_iocblist:
+ lpfc_free_iocb_list(phba);
+out_destroy_queue:
+ lpfc_sli4_queue_destroy(phba);
+out_stop_timers:
+ lpfc_stop_hba_timers(phba);
+out_free_mbox:
+ mempool_free(mboxq, phba->mbox_mem_pool);
+ return rc;
+}
+
+/**
+ * lpfc_mbox_timeout - Timeout call back function for mbox timer
+ * @t: Context to fetch pointer to hba structure from.
+ *
+ * This is the callback function for mailbox timer. The mailbox
+ * timer is armed when a new mailbox command is issued and the timer
+ * is deleted when the mailbox complete. The function is called by
+ * the kernel timer code when a mailbox does not complete within
+ * expected time. This function wakes up the worker thread to
+ * process the mailbox timeout and returns. All the processing is
+ * done by the worker thread function lpfc_mbox_timeout_handler.
+ **/
+void
+lpfc_mbox_timeout(struct timer_list *t)
+{
+ struct lpfc_hba *phba = from_timer(phba, t, sli.mbox_tmo);
+ unsigned long iflag;
+ uint32_t tmo_posted;
+
+ spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
+ tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO;
+ if (!tmo_posted)
+ phba->pport->work_port_events |= WORKER_MBOX_TMO;
+ spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
+
+ if (!tmo_posted)
+ lpfc_worker_wake_up(phba);
+ return;
+}
+
+/**
+ * lpfc_sli4_mbox_completions_pending - check to see if any mailbox completions
+ * are pending
+ * @phba: Pointer to HBA context object.
+ *
+ * This function checks if any mailbox completions are present on the mailbox
+ * completion queue.
+ **/
+static bool
+lpfc_sli4_mbox_completions_pending(struct lpfc_hba *phba)
+{
+
+ uint32_t idx;
+ struct lpfc_queue *mcq;
+ struct lpfc_mcqe *mcqe;
+ bool pending_completions = false;
+ uint8_t qe_valid;
+
+ if (unlikely(!phba) || (phba->sli_rev != LPFC_SLI_REV4))
+ return false;
+
+ /* Check for completions on mailbox completion queue */
+
+ mcq = phba->sli4_hba.mbx_cq;
+ idx = mcq->hba_index;
+ qe_valid = mcq->qe_valid;
+ while (bf_get_le32(lpfc_cqe_valid,
+ (struct lpfc_cqe *)lpfc_sli4_qe(mcq, idx)) == qe_valid) {
+ mcqe = (struct lpfc_mcqe *)(lpfc_sli4_qe(mcq, idx));
+ if (bf_get_le32(lpfc_trailer_completed, mcqe) &&
+ (!bf_get_le32(lpfc_trailer_async, mcqe))) {
+ pending_completions = true;
+ break;
+ }
+ idx = (idx + 1) % mcq->entry_count;
+ if (mcq->hba_index == idx)
+ break;
+
+ /* if the index wrapped around, toggle the valid bit */
+ if (phba->sli4_hba.pc_sli4_params.cqav && !idx)
+ qe_valid = (qe_valid) ? 0 : 1;
+ }
+ return pending_completions;
+
+}
+
+/**
+ * lpfc_sli4_process_missed_mbox_completions - process mbox completions
+ * that were missed.
+ * @phba: Pointer to HBA context object.
+ *
+ * For sli4, it is possible to miss an interrupt. As such mbox completions
+ * maybe missed causing erroneous mailbox timeouts to occur. This function
+ * checks to see if mbox completions are on the mailbox completion queue
+ * and will process all the completions associated with the eq for the
+ * mailbox completion queue.
+ **/
+static bool
+lpfc_sli4_process_missed_mbox_completions(struct lpfc_hba *phba)
+{
+ struct lpfc_sli4_hba *sli4_hba = &phba->sli4_hba;
+ uint32_t eqidx;
+ struct lpfc_queue *fpeq = NULL;
+ struct lpfc_queue *eq;
+ bool mbox_pending;
+
+ if (unlikely(!phba) || (phba->sli_rev != LPFC_SLI_REV4))
+ return false;
+
+ /* Find the EQ associated with the mbox CQ */
+ if (sli4_hba->hdwq) {
+ for (eqidx = 0; eqidx < phba->cfg_irq_chann; eqidx++) {
+ eq = phba->sli4_hba.hba_eq_hdl[eqidx].eq;
+ if (eq && eq->queue_id == sli4_hba->mbx_cq->assoc_qid) {
+ fpeq = eq;
+ break;
+ }
+ }
+ }
+ if (!fpeq)
+ return false;
+
+ /* Turn off interrupts from this EQ */
+
+ sli4_hba->sli4_eq_clr_intr(fpeq);
+
+ /* Check to see if a mbox completion is pending */
+
+ mbox_pending = lpfc_sli4_mbox_completions_pending(phba);
+
+ /*
+ * If a mbox completion is pending, process all the events on EQ
+ * associated with the mbox completion queue (this could include
+ * mailbox commands, async events, els commands, receive queue data
+ * and fcp commands)
+ */
+
+ if (mbox_pending)
+ /* process and rearm the EQ */
+ lpfc_sli4_process_eq(phba, fpeq, LPFC_QUEUE_REARM);
+ else
+ /* Always clear and re-arm the EQ */
+ sli4_hba->sli4_write_eq_db(phba, fpeq, 0, LPFC_QUEUE_REARM);
+
+ return mbox_pending;
+
+}
+
+/**
+ * lpfc_mbox_timeout_handler - Worker thread function to handle mailbox timeout
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called from worker thread when a mailbox command times out.
+ * The caller is not required to hold any locks. This function will reset the
+ * HBA and recover all the pending commands.
+ **/
+void
+lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
+ MAILBOX_t *mb = NULL;
+
+ struct lpfc_sli *psli = &phba->sli;
+
+ /* If the mailbox completed, process the completion */
+ lpfc_sli4_process_missed_mbox_completions(phba);
+
+ if (!(psli->sli_flag & LPFC_SLI_ACTIVE))
+ return;
+
+ if (pmbox != NULL)
+ mb = &pmbox->u.mb;
+ /* Check the pmbox pointer first. There is a race condition
+ * between the mbox timeout handler getting executed in the
+ * worklist and the mailbox actually completing. When this
+ * race condition occurs, the mbox_active will be NULL.
+ */
+ spin_lock_irq(&phba->hbalock);
+ if (pmbox == NULL) {
+ lpfc_printf_log(phba, KERN_WARNING,
+ LOG_MBOX | LOG_SLI,
+ "0353 Active Mailbox cleared - mailbox timeout "
+ "exiting\n");
+ spin_unlock_irq(&phba->hbalock);
+ return;
+ }
+
+ /* Mbox cmd <mbxCommand> timeout */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0310 Mailbox command x%x timeout Data: x%x x%x x%px\n",
+ mb->mbxCommand,
+ phba->pport->port_state,
+ phba->sli.sli_flag,
+ phba->sli.mbox_active);
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Setting state unknown so lpfc_sli_abort_iocb_ring
+ * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing
+ * it to fail all outstanding SCSI IO.
+ */
+ set_bit(MBX_TMO_ERR, &phba->bit_flags);
+ spin_lock_irq(&phba->pport->work_port_lock);
+ phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
+ spin_unlock_irq(&phba->pport->work_port_lock);
+ spin_lock_irq(&phba->hbalock);
+ phba->link_state = LPFC_LINK_UNKNOWN;
+ psli->sli_flag &= ~LPFC_SLI_ACTIVE;
+ spin_unlock_irq(&phba->hbalock);
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0345 Resetting board due to mailbox timeout\n");
+
+ /* Reset the HBA device */
+ lpfc_reset_hba(phba);
+}
+
+/**
+ * lpfc_sli_issue_mbox_s3 - Issue an SLI3 mailbox command to firmware
+ * @phba: Pointer to HBA context object.
+ * @pmbox: Pointer to mailbox object.
+ * @flag: Flag indicating how the mailbox need to be processed.
+ *
+ * This function is called by discovery code and HBA management code
+ * to submit a mailbox command to firmware with SLI-3 interface spec. This
+ * function gets the hbalock to protect the data structures.
+ * The mailbox command can be submitted in polling mode, in which case
+ * this function will wait in a polling loop for the completion of the
+ * mailbox.
+ * If the mailbox is submitted in no_wait mode (not polling) the
+ * function will submit the command and returns immediately without waiting
+ * for the mailbox completion. The no_wait is supported only when HBA
+ * is in SLI2/SLI3 mode - interrupts are enabled.
+ * The SLI interface allows only one mailbox pending at a time. If the
+ * mailbox is issued in polling mode and there is already a mailbox
+ * pending, then the function will return an error. If the mailbox is issued
+ * in NO_WAIT mode and there is a mailbox pending already, the function
+ * will return MBX_BUSY after queuing the mailbox into mailbox queue.
+ * The sli layer owns the mailbox object until the completion of mailbox
+ * command if this function return MBX_BUSY or MBX_SUCCESS. For all other
+ * return codes the caller owns the mailbox command after the return of
+ * the function.
+ **/
+static int
+lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox,
+ uint32_t flag)
+{
+ MAILBOX_t *mbx;
+ struct lpfc_sli *psli = &phba->sli;
+ uint32_t status, evtctr;
+ uint32_t ha_copy, hc_copy;
+ int i;
+ unsigned long timeout;
+ unsigned long drvr_flag = 0;
+ uint32_t word0, ldata;
+ void __iomem *to_slim;
+ int processing_queue = 0;
+
+ spin_lock_irqsave(&phba->hbalock, drvr_flag);
+ if (!pmbox) {
+ phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ /* processing mbox queue from intr_handler */
+ if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ return MBX_SUCCESS;
+ }
+ processing_queue = 1;
+ pmbox = lpfc_mbox_get(phba);
+ if (!pmbox) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ return MBX_SUCCESS;
+ }
+ }
+
+ if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
+ pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
+ if(!pmbox->vport) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ lpfc_printf_log(phba, KERN_ERR,
+ LOG_MBOX | LOG_VPORT,
+ "1806 Mbox x%x failed. No vport\n",
+ pmbox->u.mb.mbxCommand);
+ dump_stack();
+ goto out_not_finished;
+ }
+ }
+
+ /* If the PCI channel is in offline state, do not post mbox. */
+ if (unlikely(pci_channel_offline(phba->pcidev))) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ goto out_not_finished;
+ }
+
+ /* If HBA has a deferred error attention, fail the iocb. */
+ if (unlikely(phba->hba_flag & DEFER_ERATT)) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ goto out_not_finished;
+ }
+
+ psli = &phba->sli;
+
+ mbx = &pmbox->u.mb;
+ status = MBX_SUCCESS;
+
+ if (phba->link_state == LPFC_HBA_ERROR) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+
+ /* Mbox command <mbxCommand> cannot issue */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):0311 Mailbox command x%x cannot "
+ "issue Data: x%x x%x\n",
+ pmbox->vport ? pmbox->vport->vpi : 0,
+ pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
+ goto out_not_finished;
+ }
+
+ if (mbx->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT) {
+ if (lpfc_readl(phba->HCregaddr, &hc_copy) ||
+ !(hc_copy & HC_MBINT_ENA)) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):2528 Mailbox command x%x cannot "
+ "issue Data: x%x x%x\n",
+ pmbox->vport ? pmbox->vport->vpi : 0,
+ pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
+ goto out_not_finished;
+ }
+ }
+
+ if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
+ /* Polling for a mbox command when another one is already active
+ * is not allowed in SLI. Also, the driver must have established
+ * SLI2 mode to queue and process multiple mbox commands.
+ */
+
+ if (flag & MBX_POLL) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+
+ /* Mbox command <mbxCommand> cannot issue */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):2529 Mailbox command x%x "
+ "cannot issue Data: x%x x%x\n",
+ pmbox->vport ? pmbox->vport->vpi : 0,
+ pmbox->u.mb.mbxCommand,
+ psli->sli_flag, flag);
+ goto out_not_finished;
+ }
+
+ if (!(psli->sli_flag & LPFC_SLI_ACTIVE)) {
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ /* Mbox command <mbxCommand> cannot issue */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):2530 Mailbox command x%x "
+ "cannot issue Data: x%x x%x\n",
+ pmbox->vport ? pmbox->vport->vpi : 0,
+ pmbox->u.mb.mbxCommand,
+ psli->sli_flag, flag);
+ goto out_not_finished;
+ }
+
+ /* Another mailbox command is still being processed, queue this
+ * command to be processed later.
+ */
+ lpfc_mbox_put(phba, pmbox);
+
+ /* Mbox cmd issue - BUSY */
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "(%d):0308 Mbox cmd issue - BUSY Data: "
+ "x%x x%x x%x x%x\n",
+ pmbox->vport ? pmbox->vport->vpi : 0xffffff,
+ mbx->mbxCommand,
+ phba->pport ? phba->pport->port_state : 0xff,
+ psli->sli_flag, flag);
+
+ psli->slistat.mbox_busy++;
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+
+ if (pmbox->vport) {
+ lpfc_debugfs_disc_trc(pmbox->vport,
+ LPFC_DISC_TRC_MBOX_VPORT,
+ "MBOX Bsy vport: cmd:x%x mb:x%x x%x",
+ (uint32_t)mbx->mbxCommand,
+ mbx->un.varWords[0], mbx->un.varWords[1]);
+ }
+ else {
+ lpfc_debugfs_disc_trc(phba->pport,
+ LPFC_DISC_TRC_MBOX,
+ "MBOX Bsy: cmd:x%x mb:x%x x%x",
+ (uint32_t)mbx->mbxCommand,
+ mbx->un.varWords[0], mbx->un.varWords[1]);
+ }
+
+ return MBX_BUSY;
+ }
+
+ psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
+
+ /* If we are not polling, we MUST be in SLI2 mode */
+ if (flag != MBX_POLL) {
+ if (!(psli->sli_flag & LPFC_SLI_ACTIVE) &&
+ (mbx->mbxCommand != MBX_KILL_BOARD)) {
+ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ /* Mbox command <mbxCommand> cannot issue */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):2531 Mailbox command x%x "
+ "cannot issue Data: x%x x%x\n",
+ pmbox->vport ? pmbox->vport->vpi : 0,
+ pmbox->u.mb.mbxCommand,
+ psli->sli_flag, flag);
+ goto out_not_finished;
+ }
+ /* timeout active mbox command */
+ timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, pmbox) *
+ 1000);
+ mod_timer(&psli->mbox_tmo, jiffies + timeout);
+ }
+
+ /* Mailbox cmd <cmd> issue */
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x "
+ "x%x\n",
+ pmbox->vport ? pmbox->vport->vpi : 0,
+ mbx->mbxCommand,
+ phba->pport ? phba->pport->port_state : 0xff,
+ psli->sli_flag, flag);
+
+ if (mbx->mbxCommand != MBX_HEARTBEAT) {
+ if (pmbox->vport) {
+ lpfc_debugfs_disc_trc(pmbox->vport,
+ LPFC_DISC_TRC_MBOX_VPORT,
+ "MBOX Send vport: cmd:x%x mb:x%x x%x",
+ (uint32_t)mbx->mbxCommand,
+ mbx->un.varWords[0], mbx->un.varWords[1]);
+ }
+ else {
+ lpfc_debugfs_disc_trc(phba->pport,
+ LPFC_DISC_TRC_MBOX,
+ "MBOX Send: cmd:x%x mb:x%x x%x",
+ (uint32_t)mbx->mbxCommand,
+ mbx->un.varWords[0], mbx->un.varWords[1]);
+ }
+ }
+
+ psli->slistat.mbox_cmd++;
+ evtctr = psli->slistat.mbox_event;
+
+ /* next set own bit for the adapter and copy over command word */
+ mbx->mbxOwner = OWN_CHIP;
+
+ if (psli->sli_flag & LPFC_SLI_ACTIVE) {
+ /* Populate mbox extension offset word. */
+ if (pmbox->in_ext_byte_len || pmbox->out_ext_byte_len) {
+ *(((uint32_t *)mbx) + pmbox->mbox_offset_word)
+ = (uint8_t *)phba->mbox_ext
+ - (uint8_t *)phba->mbox;
+ }
+
+ /* Copy the mailbox extension data */
+ if (pmbox->in_ext_byte_len && pmbox->ctx_buf) {
+ lpfc_sli_pcimem_bcopy(pmbox->ctx_buf,
+ (uint8_t *)phba->mbox_ext,
+ pmbox->in_ext_byte_len);
+ }
+ /* Copy command data to host SLIM area */
+ lpfc_sli_pcimem_bcopy(mbx, phba->mbox, MAILBOX_CMD_SIZE);
+ } else {
+ /* Populate mbox extension offset word. */
+ if (pmbox->in_ext_byte_len || pmbox->out_ext_byte_len)
+ *(((uint32_t *)mbx) + pmbox->mbox_offset_word)
+ = MAILBOX_HBA_EXT_OFFSET;
+
+ /* Copy the mailbox extension data */
+ if (pmbox->in_ext_byte_len && pmbox->ctx_buf)
+ lpfc_memcpy_to_slim(phba->MBslimaddr +
+ MAILBOX_HBA_EXT_OFFSET,
+ pmbox->ctx_buf, pmbox->in_ext_byte_len);
+
+ if (mbx->mbxCommand == MBX_CONFIG_PORT)
+ /* copy command data into host mbox for cmpl */
+ lpfc_sli_pcimem_bcopy(mbx, phba->mbox,
+ MAILBOX_CMD_SIZE);
+
+ /* First copy mbox command data to HBA SLIM, skip past first
+ word */
+ to_slim = phba->MBslimaddr + sizeof (uint32_t);
+ lpfc_memcpy_to_slim(to_slim, &mbx->un.varWords[0],
+ MAILBOX_CMD_SIZE - sizeof (uint32_t));
+
+ /* Next copy over first word, with mbxOwner set */
+ ldata = *((uint32_t *)mbx);
+ to_slim = phba->MBslimaddr;
+ writel(ldata, to_slim);
+ readl(to_slim); /* flush */
+
+ if (mbx->mbxCommand == MBX_CONFIG_PORT)
+ /* switch over to host mailbox */
+ psli->sli_flag |= LPFC_SLI_ACTIVE;
+ }
+
+ wmb();
+
+ switch (flag) {
+ case MBX_NOWAIT:
+ /* Set up reference to mailbox command */
+ psli->mbox_active = pmbox;
+ /* Interrupt board to do it */
+ writel(CA_MBATT, phba->CAregaddr);
+ readl(phba->CAregaddr); /* flush */
+ /* Don't wait for it to finish, just return */
+ break;
+
+ case MBX_POLL:
+ /* Set up null reference to mailbox command */
+ psli->mbox_active = NULL;
+ /* Interrupt board to do it */
+ writel(CA_MBATT, phba->CAregaddr);
+ readl(phba->CAregaddr); /* flush */
+
+ if (psli->sli_flag & LPFC_SLI_ACTIVE) {
+ /* First read mbox status word */
+ word0 = *((uint32_t *)phba->mbox);
+ word0 = le32_to_cpu(word0);
+ } else {
+ /* First read mbox status word */
+ if (lpfc_readl(phba->MBslimaddr, &word0)) {
+ spin_unlock_irqrestore(&phba->hbalock,
+ drvr_flag);
+ goto out_not_finished;
+ }
+ }
+
+ /* Read the HBA Host Attention Register */
+ if (lpfc_readl(phba->HAregaddr, &ha_copy)) {
+ spin_unlock_irqrestore(&phba->hbalock,
+ drvr_flag);
+ goto out_not_finished;
+ }
+ timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, pmbox) *
+ 1000) + jiffies;
+ i = 0;
+ /* Wait for command to complete */
+ while (((word0 & OWN_CHIP) == OWN_CHIP) ||
+ (!(ha_copy & HA_MBATT) &&
+ (phba->link_state > LPFC_WARM_START))) {
+ if (time_after(jiffies, timeout)) {
+ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ spin_unlock_irqrestore(&phba->hbalock,
+ drvr_flag);
+ goto out_not_finished;
+ }
+
+ /* Check if we took a mbox interrupt while we were
+ polling */
+ if (((word0 & OWN_CHIP) != OWN_CHIP)
+ && (evtctr != psli->slistat.mbox_event))
+ break;
+
+ if (i++ > 10) {
+ spin_unlock_irqrestore(&phba->hbalock,
+ drvr_flag);
+ msleep(1);
+ spin_lock_irqsave(&phba->hbalock, drvr_flag);
+ }
+
+ if (psli->sli_flag & LPFC_SLI_ACTIVE) {
+ /* First copy command data */
+ word0 = *((uint32_t *)phba->mbox);
+ word0 = le32_to_cpu(word0);
+ if (mbx->mbxCommand == MBX_CONFIG_PORT) {
+ MAILBOX_t *slimmb;
+ uint32_t slimword0;
+ /* Check real SLIM for any errors */
+ slimword0 = readl(phba->MBslimaddr);
+ slimmb = (MAILBOX_t *) & slimword0;
+ if (((slimword0 & OWN_CHIP) != OWN_CHIP)
+ && slimmb->mbxStatus) {
+ psli->sli_flag &=
+ ~LPFC_SLI_ACTIVE;
+ word0 = slimword0;
+ }
+ }
+ } else {
+ /* First copy command data */
+ word0 = readl(phba->MBslimaddr);
+ }
+ /* Read the HBA Host Attention Register */
+ if (lpfc_readl(phba->HAregaddr, &ha_copy)) {
+ spin_unlock_irqrestore(&phba->hbalock,
+ drvr_flag);
+ goto out_not_finished;
+ }
+ }
+
+ if (psli->sli_flag & LPFC_SLI_ACTIVE) {
+ /* copy results back to user */
+ lpfc_sli_pcimem_bcopy(phba->mbox, mbx,
+ MAILBOX_CMD_SIZE);
+ /* Copy the mailbox extension data */
+ if (pmbox->out_ext_byte_len && pmbox->ctx_buf) {
+ lpfc_sli_pcimem_bcopy(phba->mbox_ext,
+ pmbox->ctx_buf,
+ pmbox->out_ext_byte_len);
+ }
+ } else {
+ /* First copy command data */
+ lpfc_memcpy_from_slim(mbx, phba->MBslimaddr,
+ MAILBOX_CMD_SIZE);
+ /* Copy the mailbox extension data */
+ if (pmbox->out_ext_byte_len && pmbox->ctx_buf) {
+ lpfc_memcpy_from_slim(
+ pmbox->ctx_buf,
+ phba->MBslimaddr +
+ MAILBOX_HBA_EXT_OFFSET,
+ pmbox->out_ext_byte_len);
+ }
+ }
+
+ writel(HA_MBATT, phba->HAregaddr);
+ readl(phba->HAregaddr); /* flush */
+
+ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ status = mbx->mbxStatus;
+ }
+
+ spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+ return status;
+
+out_not_finished:
+ if (processing_queue) {
+ pmbox->u.mb.mbxStatus = MBX_NOT_FINISHED;
+ lpfc_mbox_cmpl_put(phba, pmbox);
+ }
+ return MBX_NOT_FINISHED;
+}
+
+/**
+ * lpfc_sli4_async_mbox_block - Block posting SLI4 asynchronous mailbox command
+ * @phba: Pointer to HBA context object.
+ *
+ * The function blocks the posting of SLI4 asynchronous mailbox commands from
+ * the driver internal pending mailbox queue. It will then try to wait out the
+ * possible outstanding mailbox command before return.
+ *
+ * Returns:
+ * 0 - the outstanding mailbox command completed; otherwise, the wait for
+ * the outstanding mailbox command timed out.
+ **/
+static int
+lpfc_sli4_async_mbox_block(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ LPFC_MBOXQ_t *mboxq;
+ int rc = 0;
+ unsigned long timeout = 0;
+ u32 sli_flag;
+ u8 cmd, subsys, opcode;
+
+ /* Mark the asynchronous mailbox command posting as blocked */
+ spin_lock_irq(&phba->hbalock);
+ psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
+ /* Determine how long we might wait for the active mailbox
+ * command to be gracefully completed by firmware.
+ */
+ if (phba->sli.mbox_active)
+ timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
+ phba->sli.mbox_active) *
+ 1000) + jiffies;
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Make sure the mailbox is really active */
+ if (timeout)
+ lpfc_sli4_process_missed_mbox_completions(phba);
+
+ /* Wait for the outstanding mailbox command to complete */
+ while (phba->sli.mbox_active) {
+ /* Check active mailbox complete status every 2ms */
+ msleep(2);
+ if (time_after(jiffies, timeout)) {
+ /* Timeout, mark the outstanding cmd not complete */
+
+ /* Sanity check sli.mbox_active has not completed or
+ * cancelled from another context during last 2ms sleep,
+ * so take hbalock to be sure before logging.
+ */
+ spin_lock_irq(&phba->hbalock);
+ if (phba->sli.mbox_active) {
+ mboxq = phba->sli.mbox_active;
+ cmd = mboxq->u.mb.mbxCommand;
+ subsys = lpfc_sli_config_mbox_subsys_get(phba,
+ mboxq);
+ opcode = lpfc_sli_config_mbox_opcode_get(phba,
+ mboxq);
+ sli_flag = psli->sli_flag;
+ spin_unlock_irq(&phba->hbalock);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2352 Mailbox command x%x "
+ "(x%x/x%x) sli_flag x%x could "
+ "not complete\n",
+ cmd, subsys, opcode,
+ sli_flag);
+ } else {
+ spin_unlock_irq(&phba->hbalock);
+ }
+
+ rc = 1;
+ break;
+ }
+ }
+
+ /* Can not cleanly block async mailbox command, fails it */
+ if (rc) {
+ spin_lock_irq(&phba->hbalock);
+ psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
+ spin_unlock_irq(&phba->hbalock);
+ }
+ return rc;
+}
+
+/**
+ * lpfc_sli4_async_mbox_unblock - Block posting SLI4 async mailbox command
+ * @phba: Pointer to HBA context object.
+ *
+ * The function unblocks and resume posting of SLI4 asynchronous mailbox
+ * commands from the driver internal pending mailbox queue. It makes sure
+ * that there is no outstanding mailbox command before resuming posting
+ * asynchronous mailbox commands. If, for any reason, there is outstanding
+ * mailbox command, it will try to wait it out before resuming asynchronous
+ * mailbox command posting.
+ **/
+static void
+lpfc_sli4_async_mbox_unblock(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli = &phba->sli;
+
+ spin_lock_irq(&phba->hbalock);
+ if (!(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
+ /* Asynchronous mailbox posting is not blocked, do nothing */
+ spin_unlock_irq(&phba->hbalock);
+ return;
+ }
+
+ /* Outstanding synchronous mailbox command is guaranteed to be done,
+ * successful or timeout, after timing-out the outstanding mailbox
+ * command shall always be removed, so just unblock posting async
+ * mailbox command and resume
+ */
+ psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
+ spin_unlock_irq(&phba->hbalock);
+
+ /* wake up worker thread to post asynchronous mailbox command */
+ lpfc_worker_wake_up(phba);
+}
+
+/**
+ * lpfc_sli4_wait_bmbx_ready - Wait for bootstrap mailbox register ready
+ * @phba: Pointer to HBA context object.
+ * @mboxq: Pointer to mailbox object.
+ *
+ * The function waits for the bootstrap mailbox register ready bit from
+ * port for twice the regular mailbox command timeout value.
+ *
+ * 0 - no timeout on waiting for bootstrap mailbox register ready.
+ * MBXERR_ERROR - wait for bootstrap mailbox register timed out.
+ **/
+static int
+lpfc_sli4_wait_bmbx_ready(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
+{
+ uint32_t db_ready;
+ unsigned long timeout;
+ struct lpfc_register bmbx_reg;
+
+ timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mboxq)
+ * 1000) + jiffies;
+
+ do {
+ bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr);
+ db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg);
+ if (!db_ready)
+ mdelay(2);
+
+ if (time_after(jiffies, timeout))
+ return MBXERR_ERROR;
+ } while (!db_ready);
+
+ return 0;
+}
+
+/**
+ * lpfc_sli4_post_sync_mbox - Post an SLI4 mailbox to the bootstrap mailbox
+ * @phba: Pointer to HBA context object.
+ * @mboxq: Pointer to mailbox object.
+ *
+ * The function posts a mailbox to the port. The mailbox is expected
+ * to be comletely filled in and ready for the port to operate on it.
+ * This routine executes a synchronous completion operation on the
+ * mailbox by polling for its completion.
+ *
+ * The caller must not be holding any locks when calling this routine.
+ *
+ * Returns:
+ * MBX_SUCCESS - mailbox posted successfully
+ * Any of the MBX error values.
+ **/
+static int
+lpfc_sli4_post_sync_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
+{
+ int rc = MBX_SUCCESS;
+ unsigned long iflag;
+ uint32_t mcqe_status;
+ uint32_t mbx_cmnd;
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_mqe *mb = &mboxq->u.mqe;
+ struct lpfc_bmbx_create *mbox_rgn;
+ struct dma_address *dma_address;
+
+ /*
+ * Only one mailbox can be active to the bootstrap mailbox region
+ * at a time and there is no queueing provided.
+ */
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):2532 Mailbox command x%x (x%x/x%x) "
+ "cannot issue Data: x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0,
+ mboxq->u.mb.mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ psli->sli_flag, MBX_POLL);
+ return MBXERR_ERROR;
+ }
+ /* The server grabs the token and owns it until release */
+ psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
+ phba->sli.mbox_active = mboxq;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+
+ /* wait for bootstrap mbox register for readyness */
+ rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq);
+ if (rc)
+ goto exit;
+ /*
+ * Initialize the bootstrap memory region to avoid stale data areas
+ * in the mailbox post. Then copy the caller's mailbox contents to
+ * the bmbx mailbox region.
+ */
+ mbx_cmnd = bf_get(lpfc_mqe_command, mb);
+ memset(phba->sli4_hba.bmbx.avirt, 0, sizeof(struct lpfc_bmbx_create));
+ lpfc_sli4_pcimem_bcopy(mb, phba->sli4_hba.bmbx.avirt,
+ sizeof(struct lpfc_mqe));
+
+ /* Post the high mailbox dma address to the port and wait for ready. */
+ dma_address = &phba->sli4_hba.bmbx.dma_address;
+ writel(dma_address->addr_hi, phba->sli4_hba.BMBXregaddr);
+
+ /* wait for bootstrap mbox register for hi-address write done */
+ rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq);
+ if (rc)
+ goto exit;
+
+ /* Post the low mailbox dma address to the port. */
+ writel(dma_address->addr_lo, phba->sli4_hba.BMBXregaddr);
+
+ /* wait for bootstrap mbox register for low address write done */
+ rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq);
+ if (rc)
+ goto exit;
+
+ /*
+ * Read the CQ to ensure the mailbox has completed.
+ * If so, update the mailbox status so that the upper layers
+ * can complete the request normally.
+ */
+ lpfc_sli4_pcimem_bcopy(phba->sli4_hba.bmbx.avirt, mb,
+ sizeof(struct lpfc_mqe));
+ mbox_rgn = (struct lpfc_bmbx_create *) phba->sli4_hba.bmbx.avirt;
+ lpfc_sli4_pcimem_bcopy(&mbox_rgn->mcqe, &mboxq->mcqe,
+ sizeof(struct lpfc_mcqe));
+ mcqe_status = bf_get(lpfc_mcqe_status, &mbox_rgn->mcqe);
+ /*
+ * When the CQE status indicates a failure and the mailbox status
+ * indicates success then copy the CQE status into the mailbox status
+ * (and prefix it with x4000).
+ */
+ if (mcqe_status != MB_CQE_STATUS_SUCCESS) {
+ if (bf_get(lpfc_mqe_status, mb) == MBX_SUCCESS)
+ bf_set(lpfc_mqe_status, mb,
+ (LPFC_MBX_ERROR_RANGE | mcqe_status));
+ rc = MBXERR_ERROR;
+ } else
+ lpfc_sli4_swap_str(phba, mboxq);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "(%d):0356 Mailbox cmd x%x (x%x/x%x) Status x%x "
+ "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x"
+ " x%x x%x CQ: x%x x%x x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd,
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ bf_get(lpfc_mqe_status, mb),
+ mb->un.mb_words[0], mb->un.mb_words[1],
+ mb->un.mb_words[2], mb->un.mb_words[3],
+ mb->un.mb_words[4], mb->un.mb_words[5],
+ mb->un.mb_words[6], mb->un.mb_words[7],
+ mb->un.mb_words[8], mb->un.mb_words[9],
+ mb->un.mb_words[10], mb->un.mb_words[11],
+ mb->un.mb_words[12], mboxq->mcqe.word0,
+ mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1,
+ mboxq->mcqe.trailer);
+exit:
+ /* We are holding the token, no needed for lock when release */
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ phba->sli.mbox_active = NULL;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return rc;
+}
+
+/**
+ * lpfc_sli_issue_mbox_s4 - Issue an SLI4 mailbox command to firmware
+ * @phba: Pointer to HBA context object.
+ * @mboxq: Pointer to mailbox object.
+ * @flag: Flag indicating how the mailbox need to be processed.
+ *
+ * This function is called by discovery code and HBA management code to submit
+ * a mailbox command to firmware with SLI-4 interface spec.
+ *
+ * Return codes the caller owns the mailbox command after the return of the
+ * function.
+ **/
+static int
+lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
+ uint32_t flag)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ unsigned long iflags;
+ int rc;
+
+ /* dump from issue mailbox command if setup */
+ lpfc_idiag_mbxacc_dump_issue_mbox(phba, &mboxq->u.mb);
+
+ rc = lpfc_mbox_dev_check(phba);
+ if (unlikely(rc)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):2544 Mailbox command x%x (x%x/x%x) "
+ "cannot issue Data: x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0,
+ mboxq->u.mb.mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ psli->sli_flag, flag);
+ goto out_not_finished;
+ }
+
+ /* Detect polling mode and jump to a handler */
+ if (!phba->sli4_hba.intr_enable) {
+ if (flag == MBX_POLL)
+ rc = lpfc_sli4_post_sync_mbox(phba, mboxq);
+ else
+ rc = -EIO;
+ if (rc != MBX_SUCCESS)
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+ "(%d):2541 Mailbox command x%x "
+ "(x%x/x%x) failure: "
+ "mqe_sta: x%x mcqe_sta: x%x/x%x "
+ "Data: x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0,
+ mboxq->u.mb.mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba,
+ mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba,
+ mboxq),
+ bf_get(lpfc_mqe_status, &mboxq->u.mqe),
+ bf_get(lpfc_mcqe_status, &mboxq->mcqe),
+ bf_get(lpfc_mcqe_ext_status,
+ &mboxq->mcqe),
+ psli->sli_flag, flag);
+ return rc;
+ } else if (flag == MBX_POLL) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+ "(%d):2542 Try to issue mailbox command "
+ "x%x (x%x/x%x) synchronously ahead of async "
+ "mailbox command queue: x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0,
+ mboxq->u.mb.mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ psli->sli_flag, flag);
+ /* Try to block the asynchronous mailbox posting */
+ rc = lpfc_sli4_async_mbox_block(phba);
+ if (!rc) {
+ /* Successfully blocked, now issue sync mbox cmd */
+ rc = lpfc_sli4_post_sync_mbox(phba, mboxq);
+ if (rc != MBX_SUCCESS)
+ lpfc_printf_log(phba, KERN_WARNING,
+ LOG_MBOX | LOG_SLI,
+ "(%d):2597 Sync Mailbox command "
+ "x%x (x%x/x%x) failure: "
+ "mqe_sta: x%x mcqe_sta: x%x/x%x "
+ "Data: x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0,
+ mboxq->u.mb.mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba,
+ mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba,
+ mboxq),
+ bf_get(lpfc_mqe_status, &mboxq->u.mqe),
+ bf_get(lpfc_mcqe_status, &mboxq->mcqe),
+ bf_get(lpfc_mcqe_ext_status,
+ &mboxq->mcqe),
+ psli->sli_flag, flag);
+ /* Unblock the async mailbox posting afterward */
+ lpfc_sli4_async_mbox_unblock(phba);
+ }
+ return rc;
+ }
+
+ /* Now, interrupt mode asynchronous mailbox command */
+ rc = lpfc_mbox_cmd_check(phba, mboxq);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):2543 Mailbox command x%x (x%x/x%x) "
+ "cannot issue Data: x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0,
+ mboxq->u.mb.mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ psli->sli_flag, flag);
+ goto out_not_finished;
+ }
+
+ /* Put the mailbox command to the driver internal FIFO */
+ psli->slistat.mbox_busy++;
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ lpfc_mbox_put(phba, mboxq);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "(%d):0354 Mbox cmd issue - Enqueue Data: "
+ "x%x (x%x/x%x) x%x x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0xffffff,
+ bf_get(lpfc_mqe_command, &mboxq->u.mqe),
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ phba->pport->port_state,
+ psli->sli_flag, MBX_NOWAIT);
+ /* Wake up worker thread to transport mailbox command from head */
+ lpfc_worker_wake_up(phba);
+
+ return MBX_BUSY;
+
+out_not_finished:
+ return MBX_NOT_FINISHED;
+}
+
+/**
+ * lpfc_sli4_post_async_mbox - Post an SLI4 mailbox command to device
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called by worker thread to send a mailbox command to
+ * SLI4 HBA firmware.
+ *
+ **/
+int
+lpfc_sli4_post_async_mbox(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ LPFC_MBOXQ_t *mboxq;
+ int rc = MBX_SUCCESS;
+ unsigned long iflags;
+ struct lpfc_mqe *mqe;
+ uint32_t mbx_cmnd;
+
+ /* Check interrupt mode before post async mailbox command */
+ if (unlikely(!phba->sli4_hba.intr_enable))
+ return MBX_NOT_FINISHED;
+
+ /* Check for mailbox command service token */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return MBX_NOT_FINISHED;
+ }
+ if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return MBX_NOT_FINISHED;
+ }
+ if (unlikely(phba->sli.mbox_active)) {
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0384 There is pending active mailbox cmd\n");
+ return MBX_NOT_FINISHED;
+ }
+ /* Take the mailbox command service token */
+ psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
+
+ /* Get the next mailbox command from head of queue */
+ mboxq = lpfc_mbox_get(phba);
+
+ /* If no more mailbox command waiting for post, we're done */
+ if (!mboxq) {
+ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return MBX_SUCCESS;
+ }
+ phba->sli.mbox_active = mboxq;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ /* Check device readiness for posting mailbox command */
+ rc = lpfc_mbox_dev_check(phba);
+ if (unlikely(rc))
+ /* Driver clean routine will clean up pending mailbox */
+ goto out_not_finished;
+
+ /* Prepare the mbox command to be posted */
+ mqe = &mboxq->u.mqe;
+ mbx_cmnd = bf_get(lpfc_mqe_command, mqe);
+
+ /* Start timer for the mbox_tmo and log some mailbox post messages */
+ mod_timer(&psli->mbox_tmo, (jiffies +
+ msecs_to_jiffies(1000 * lpfc_mbox_tmo_val(phba, mboxq))));
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "(%d):0355 Mailbox cmd x%x (x%x/x%x) issue Data: "
+ "x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd,
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ phba->pport->port_state, psli->sli_flag);
+
+ if (mbx_cmnd != MBX_HEARTBEAT) {
+ if (mboxq->vport) {
+ lpfc_debugfs_disc_trc(mboxq->vport,
+ LPFC_DISC_TRC_MBOX_VPORT,
+ "MBOX Send vport: cmd:x%x mb:x%x x%x",
+ mbx_cmnd, mqe->un.mb_words[0],
+ mqe->un.mb_words[1]);
+ } else {
+ lpfc_debugfs_disc_trc(phba->pport,
+ LPFC_DISC_TRC_MBOX,
+ "MBOX Send: cmd:x%x mb:x%x x%x",
+ mbx_cmnd, mqe->un.mb_words[0],
+ mqe->un.mb_words[1]);
+ }
+ }
+ psli->slistat.mbox_cmd++;
+
+ /* Post the mailbox command to the port */
+ rc = lpfc_sli4_mq_put(phba->sli4_hba.mbx_wq, mqe);
+ if (rc != MBX_SUCCESS) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):2533 Mailbox command x%x (x%x/x%x) "
+ "cannot issue Data: x%x x%x\n",
+ mboxq->vport ? mboxq->vport->vpi : 0,
+ mboxq->u.mb.mbxCommand,
+ lpfc_sli_config_mbox_subsys_get(phba, mboxq),
+ lpfc_sli_config_mbox_opcode_get(phba, mboxq),
+ psli->sli_flag, MBX_NOWAIT);
+ goto out_not_finished;
+ }
+
+ return rc;
+
+out_not_finished:
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ if (phba->sli.mbox_active) {
+ mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
+ __lpfc_mbox_cmpl_put(phba, mboxq);
+ /* Release the token */
+ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ phba->sli.mbox_active = NULL;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ return MBX_NOT_FINISHED;
+}
+
+/**
+ * lpfc_sli_issue_mbox - Wrapper func for issuing mailbox command
+ * @phba: Pointer to HBA context object.
+ * @pmbox: Pointer to mailbox object.
+ * @flag: Flag indicating how the mailbox need to be processed.
+ *
+ * This routine wraps the actual SLI3 or SLI4 mailbox issuing routine from
+ * the API jump table function pointer from the lpfc_hba struct.
+ *
+ * Return codes the caller owns the mailbox command after the return of the
+ * function.
+ **/
+int
+lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
+{
+ return phba->lpfc_sli_issue_mbox(phba, pmbox, flag);
+}
+
+/**
+ * lpfc_mbox_api_table_setup - Set up mbox api function jump table
+ * @phba: The hba struct for which this call is being executed.
+ * @dev_grp: The HBA PCI-Device group number.
+ *
+ * This routine sets up the mbox interface API function jump table in @phba
+ * struct.
+ * Returns: 0 - success, -ENODEV - failure.
+ **/
+int
+lpfc_mbox_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
+{
+
+ switch (dev_grp) {
+ case LPFC_PCI_DEV_LP:
+ phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s3;
+ phba->lpfc_sli_handle_slow_ring_event =
+ lpfc_sli_handle_slow_ring_event_s3;
+ phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s3;
+ phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s3;
+ phba->lpfc_sli_brdready = lpfc_sli_brdready_s3;
+ break;
+ case LPFC_PCI_DEV_OC:
+ phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s4;
+ phba->lpfc_sli_handle_slow_ring_event =
+ lpfc_sli_handle_slow_ring_event_s4;
+ phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s4;
+ phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s4;
+ phba->lpfc_sli_brdready = lpfc_sli_brdready_s4;
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "1420 Invalid HBA PCI-device group: 0x%x\n",
+ dev_grp);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+/**
+ * __lpfc_sli_ringtx_put - Add an iocb to the txq
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @piocb: Pointer to address of newly added command iocb.
+ *
+ * This function is called with hbalock held for SLI3 ports or
+ * the ring lock held for SLI4 ports to add a command
+ * iocb to the txq when SLI layer cannot submit the command iocb
+ * to the ring.
+ **/
+void
+__lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *piocb)
+{
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ lockdep_assert_held(&pring->ring_lock);
+ else
+ lockdep_assert_held(&phba->hbalock);
+ /* Insert the caller's iocb in the txq tail for later processing. */
+ list_add_tail(&piocb->list, &pring->txq);
+}
+
+/**
+ * lpfc_sli_next_iocb - Get the next iocb in the txq
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @piocb: Pointer to address of newly added command iocb.
+ *
+ * This function is called with hbalock held before a new
+ * iocb is submitted to the firmware. This function checks
+ * txq to flush the iocbs in txq to Firmware before
+ * submitting new iocbs to the Firmware.
+ * If there are iocbs in the txq which need to be submitted
+ * to firmware, lpfc_sli_next_iocb returns the first element
+ * of the txq after dequeuing it from txq.
+ * If there is no iocb in the txq then the function will return
+ * *piocb and *piocb is set to NULL. Caller needs to check
+ * *piocb to find if there are more commands in the txq.
+ **/
+static struct lpfc_iocbq *
+lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq **piocb)
+{
+ struct lpfc_iocbq * nextiocb;
+
+ lockdep_assert_held(&phba->hbalock);
+
+ nextiocb = lpfc_sli_ringtx_get(phba, pring);
+ if (!nextiocb) {
+ nextiocb = *piocb;
+ *piocb = NULL;
+ }
+
+ return nextiocb;
+}
+
+/**
+ * __lpfc_sli_issue_iocb_s3 - SLI3 device lockless ver of lpfc_sli_issue_iocb
+ * @phba: Pointer to HBA context object.
+ * @ring_number: SLI ring number to issue iocb on.
+ * @piocb: Pointer to command iocb.
+ * @flag: Flag indicating if this command can be put into txq.
+ *
+ * __lpfc_sli_issue_iocb_s3 is used by other functions in the driver to issue
+ * an iocb command to an HBA with SLI-3 interface spec. If the PCI slot is
+ * recovering from error state, if HBA is resetting or if LPFC_STOP_IOCB_EVENT
+ * flag is turned on, the function returns IOCB_ERROR. When the link is down,
+ * this function allows only iocbs for posting buffers. This function finds
+ * next available slot in the command ring and posts the command to the
+ * available slot and writes the port attention register to request HBA start
+ * processing new iocb. If there is no slot available in the ring and
+ * flag & SLI_IOCB_RET_IOCB is set, the new iocb is added to the txq, otherwise
+ * the function returns IOCB_BUSY.
+ *
+ * This function is called with hbalock held. The function will return success
+ * after it successfully submit the iocb to firmware or after adding to the
+ * txq.
+ **/
+static int
+__lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number,
+ struct lpfc_iocbq *piocb, uint32_t flag)
+{
+ struct lpfc_iocbq *nextiocb;
+ IOCB_t *iocb;
+ struct lpfc_sli_ring *pring = &phba->sli.sli3_ring[ring_number];
+
+ lockdep_assert_held(&phba->hbalock);
+
+ if (piocb->cmd_cmpl && (!piocb->vport) &&
+ (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
+ (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "1807 IOCB x%x failed. No vport\n",
+ piocb->iocb.ulpCommand);
+ dump_stack();
+ return IOCB_ERROR;
+ }
+
+
+ /* If the PCI channel is in offline state, do not post iocbs. */
+ if (unlikely(pci_channel_offline(phba->pcidev)))
+ return IOCB_ERROR;
+
+ /* If HBA has a deferred error attention, fail the iocb. */
+ if (unlikely(phba->hba_flag & DEFER_ERATT))
+ return IOCB_ERROR;
+
+ /*
+ * We should never get an IOCB if we are in a < LINK_DOWN state
+ */
+ if (unlikely(phba->link_state < LPFC_LINK_DOWN))
+ return IOCB_ERROR;
+
+ /*
+ * Check to see if we are blocking IOCB processing because of a
+ * outstanding event.
+ */
+ if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
+ goto iocb_busy;
+
+ if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
+ /*
+ * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF
+ * can be issued if the link is not up.
+ */
+ switch (piocb->iocb.ulpCommand) {
+ case CMD_QUE_RING_BUF_CN:
+ case CMD_QUE_RING_BUF64_CN:
+ /*
+ * For IOCBs, like QUE_RING_BUF, that have no rsp ring
+ * completion, cmd_cmpl MUST be 0.
+ */
+ if (piocb->cmd_cmpl)
+ piocb->cmd_cmpl = NULL;
+ fallthrough;
+ case CMD_CREATE_XRI_CR:
+ case CMD_CLOSE_XRI_CN:
+ case CMD_CLOSE_XRI_CX:
+ break;
+ default:
+ goto iocb_busy;
+ }
+
+ /*
+ * For FCP commands, we must be in a state where we can process link
+ * attention events.
+ */
+ } else if (unlikely(pring->ringno == LPFC_FCP_RING &&
+ !(phba->sli.sli_flag & LPFC_PROCESS_LA))) {
+ goto iocb_busy;
+ }
+
+ while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
+ (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
+ lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
+
+ if (iocb)
+ lpfc_sli_update_ring(phba, pring);
+ else
+ lpfc_sli_update_full_ring(phba, pring);
+
+ if (!piocb)
+ return IOCB_SUCCESS;
+
+ goto out_busy;
+
+ iocb_busy:
+ pring->stats.iocb_cmd_delay++;
+
+ out_busy:
+
+ if (!(flag & SLI_IOCB_RET_IOCB)) {
+ __lpfc_sli_ringtx_put(phba, pring, piocb);
+ return IOCB_SUCCESS;
+ }
+
+ return IOCB_BUSY;
+}
+
+/**
+ * __lpfc_sli_issue_fcp_io_s3 - SLI3 device for sending fcp io iocb
+ * @phba: Pointer to HBA context object.
+ * @ring_number: SLI ring number to issue wqe on.
+ * @piocb: Pointer to command iocb.
+ * @flag: Flag indicating if this command can be put into txq.
+ *
+ * __lpfc_sli_issue_fcp_io_s3 is wrapper function to invoke lockless func to
+ * send an iocb command to an HBA with SLI-3 interface spec.
+ *
+ * This function takes the hbalock before invoking the lockless version.
+ * The function will return success after it successfully submit the wqe to
+ * firmware or after adding to the txq.
+ **/
+static int
+__lpfc_sli_issue_fcp_io_s3(struct lpfc_hba *phba, uint32_t ring_number,
+ struct lpfc_iocbq *piocb, uint32_t flag)
+{
+ unsigned long iflags;
+ int rc;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ rc = __lpfc_sli_issue_iocb_s3(phba, ring_number, piocb, flag);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ return rc;
+}
+
+/**
+ * __lpfc_sli_issue_fcp_io_s4 - SLI4 device for sending fcp io wqe
+ * @phba: Pointer to HBA context object.
+ * @ring_number: SLI ring number to issue wqe on.
+ * @piocb: Pointer to command iocb.
+ * @flag: Flag indicating if this command can be put into txq.
+ *
+ * __lpfc_sli_issue_fcp_io_s4 is used by other functions in the driver to issue
+ * an wqe command to an HBA with SLI-4 interface spec.
+ *
+ * This function is a lockless version. The function will return success
+ * after it successfully submit the wqe to firmware or after adding to the
+ * txq.
+ **/
+static int
+__lpfc_sli_issue_fcp_io_s4(struct lpfc_hba *phba, uint32_t ring_number,
+ struct lpfc_iocbq *piocb, uint32_t flag)
+{
+ struct lpfc_io_buf *lpfc_cmd = piocb->io_buf;
+
+ lpfc_prep_embed_io(phba, lpfc_cmd);
+ return lpfc_sli4_issue_wqe(phba, lpfc_cmd->hdwq, piocb);
+}
+
+void
+lpfc_prep_embed_io(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
+{
+ struct lpfc_iocbq *piocb = &lpfc_cmd->cur_iocbq;
+ union lpfc_wqe128 *wqe = &lpfc_cmd->cur_iocbq.wqe;
+ struct sli4_sge *sgl;
+
+ /* 128 byte wqe support here */
+ sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
+
+ if (phba->fcp_embed_io) {
+ struct fcp_cmnd *fcp_cmnd;
+ u32 *ptr;
+
+ fcp_cmnd = lpfc_cmd->fcp_cmnd;
+
+ /* Word 0-2 - FCP_CMND */
+ wqe->generic.bde.tus.f.bdeFlags =
+ BUFF_TYPE_BDE_IMMED;
+ wqe->generic.bde.tus.f.bdeSize = sgl->sge_len;
+ wqe->generic.bde.addrHigh = 0;
+ wqe->generic.bde.addrLow = 88; /* Word 22 */
+
+ bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
+ bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0);
+
+ /* Word 22-29 FCP CMND Payload */
+ ptr = &wqe->words[22];
+ memcpy(ptr, fcp_cmnd, sizeof(struct fcp_cmnd));
+ } else {
+ /* Word 0-2 - Inline BDE */
+ wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ wqe->generic.bde.tus.f.bdeSize = sizeof(struct fcp_cmnd);
+ wqe->generic.bde.addrHigh = sgl->addr_hi;
+ wqe->generic.bde.addrLow = sgl->addr_lo;
+
+ /* Word 10 */
+ bf_set(wqe_dbde, &wqe->generic.wqe_com, 1);
+ bf_set(wqe_wqes, &wqe->generic.wqe_com, 0);
+ }
+
+ /* add the VMID tags as per switch response */
+ if (unlikely(piocb->cmd_flag & LPFC_IO_VMID)) {
+ if (phba->pport->vmid_flag & LPFC_VMID_TYPE_PRIO) {
+ bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1);
+ bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com,
+ (piocb->vmid_tag.cs_ctl_vmid));
+ } else if (phba->cfg_vmid_app_header) {
+ bf_set(wqe_appid, &wqe->fcp_iwrite.wqe_com, 1);
+ bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
+ wqe->words[31] = piocb->vmid_tag.app_id;
+ }
+ }
+}
+
+/**
+ * __lpfc_sli_issue_iocb_s4 - SLI4 device lockless ver of lpfc_sli_issue_iocb
+ * @phba: Pointer to HBA context object.
+ * @ring_number: SLI ring number to issue iocb on.
+ * @piocb: Pointer to command iocb.
+ * @flag: Flag indicating if this command can be put into txq.
+ *
+ * __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue
+ * an iocb command to an HBA with SLI-4 interface spec.
+ *
+ * This function is called with ringlock held. The function will return success
+ * after it successfully submit the iocb to firmware or after adding to the
+ * txq.
+ **/
+static int
+__lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
+ struct lpfc_iocbq *piocb, uint32_t flag)
+{
+ struct lpfc_sglq *sglq;
+ union lpfc_wqe128 *wqe;
+ struct lpfc_queue *wq;
+ struct lpfc_sli_ring *pring;
+ u32 ulp_command = get_job_cmnd(phba, piocb);
+
+ /* Get the WQ */
+ if ((piocb->cmd_flag & LPFC_IO_FCP) ||
+ (piocb->cmd_flag & LPFC_USE_FCPWQIDX)) {
+ wq = phba->sli4_hba.hdwq[piocb->hba_wqidx].io_wq;
+ } else {
+ wq = phba->sli4_hba.els_wq;
+ }
+
+ /* Get corresponding ring */
+ pring = wq->pring;
+
+ /*
+ * The WQE can be either 64 or 128 bytes,
+ */
+
+ lockdep_assert_held(&pring->ring_lock);
+ wqe = &piocb->wqe;
+ if (piocb->sli4_xritag == NO_XRI) {
+ if (ulp_command == CMD_ABORT_XRI_CX)
+ sglq = NULL;
+ else {
+ sglq = __lpfc_sli_get_els_sglq(phba, piocb);
+ if (!sglq) {
+ if (!(flag & SLI_IOCB_RET_IOCB)) {
+ __lpfc_sli_ringtx_put(phba,
+ pring,
+ piocb);
+ return IOCB_SUCCESS;
+ } else {
+ return IOCB_BUSY;
+ }
+ }
+ }
+ } else if (piocb->cmd_flag & LPFC_IO_FCP) {
+ /* These IO's already have an XRI and a mapped sgl. */
+ sglq = NULL;
+ }
+ else {
+ /*
+ * This is a continuation of a commandi,(CX) so this
+ * sglq is on the active list
+ */
+ sglq = __lpfc_get_active_sglq(phba, piocb->sli4_lxritag);
+ if (!sglq)
+ return IOCB_ERROR;
+ }
+
+ if (sglq) {
+ piocb->sli4_lxritag = sglq->sli4_lxritag;
+ piocb->sli4_xritag = sglq->sli4_xritag;
+
+ /* ABTS sent by initiator to CT exchange, the
+ * RX_ID field will be filled with the newly
+ * allocated responder XRI.
+ */
+ if (ulp_command == CMD_XMIT_BLS_RSP64_CX &&
+ piocb->abort_bls == LPFC_ABTS_UNSOL_INT)
+ bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp,
+ piocb->sli4_xritag);
+
+ bf_set(wqe_xri_tag, &wqe->generic.wqe_com,
+ piocb->sli4_xritag);
+
+ if (lpfc_wqe_bpl2sgl(phba, piocb, sglq) == NO_XRI)
+ return IOCB_ERROR;
+ }
+
+ if (lpfc_sli4_wq_put(wq, wqe))
+ return IOCB_ERROR;
+
+ lpfc_sli_ringtxcmpl_put(phba, pring, piocb);
+
+ return 0;
+}
+
+/*
+ * lpfc_sli_issue_fcp_io - Wrapper func for issuing fcp i/o
+ *
+ * This routine wraps the actual fcp i/o function for issusing WQE for sli-4
+ * or IOCB for sli-3 function.
+ * pointer from the lpfc_hba struct.
+ *
+ * Return codes:
+ * IOCB_ERROR - Error
+ * IOCB_SUCCESS - Success
+ * IOCB_BUSY - Busy
+ **/
+int
+lpfc_sli_issue_fcp_io(struct lpfc_hba *phba, uint32_t ring_number,
+ struct lpfc_iocbq *piocb, uint32_t flag)
+{
+ return phba->__lpfc_sli_issue_fcp_io(phba, ring_number, piocb, flag);
+}
+
+/*
+ * __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb
+ *
+ * This routine wraps the actual lockless version for issusing IOCB function
+ * pointer from the lpfc_hba struct.
+ *
+ * Return codes:
+ * IOCB_ERROR - Error
+ * IOCB_SUCCESS - Success
+ * IOCB_BUSY - Busy
+ **/
+int
+__lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
+ struct lpfc_iocbq *piocb, uint32_t flag)
+{
+ return phba->__lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
+}
+
+static void
+__lpfc_sli_prep_els_req_rsp_s3(struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_vport *vport,
+ struct lpfc_dmabuf *bmp, u16 cmd_size, u32 did,
+ u32 elscmd, u8 tmo, u8 expect_rsp)
+{
+ struct lpfc_hba *phba = vport->phba;
+ IOCB_t *cmd;
+
+ cmd = &cmdiocbq->iocb;
+ memset(cmd, 0, sizeof(*cmd));
+
+ cmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
+ cmd->un.elsreq64.bdl.addrLow = putPaddrLow(bmp->phys);
+ cmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
+
+ if (expect_rsp) {
+ cmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
+ cmd->un.elsreq64.remoteID = did; /* DID */
+ cmd->ulpCommand = CMD_ELS_REQUEST64_CR;
+ cmd->ulpTimeout = tmo;
+ } else {
+ cmd->un.elsreq64.bdl.bdeSize = sizeof(struct ulp_bde64);
+ cmd->un.genreq64.xmit_els_remoteID = did; /* DID */
+ cmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
+ cmd->ulpPU = PARM_NPIV_DID;
+ }
+ cmd->ulpBdeCount = 1;
+ cmd->ulpLe = 1;
+ cmd->ulpClass = CLASS3;
+
+ /* If we have NPIV enabled, we want to send ELS traffic by VPI. */
+ if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
+ if (expect_rsp) {
+ cmd->un.elsreq64.myID = vport->fc_myDID;
+
+ /* For ELS_REQUEST64_CR, use the VPI by default */
+ cmd->ulpContext = phba->vpi_ids[vport->vpi];
+ }
+
+ cmd->ulpCt_h = 0;
+ /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
+ if (elscmd == ELS_CMD_ECHO)
+ cmd->ulpCt_l = 0; /* context = invalid RPI */
+ else
+ cmd->ulpCt_l = 1; /* context = VPI */
+ }
+}
+
+static void
+__lpfc_sli_prep_els_req_rsp_s4(struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_vport *vport,
+ struct lpfc_dmabuf *bmp, u16 cmd_size, u32 did,
+ u32 elscmd, u8 tmo, u8 expect_rsp)
+{
+ struct lpfc_hba *phba = vport->phba;
+ union lpfc_wqe128 *wqe;
+ struct ulp_bde64_le *bde;
+ u8 els_id;
+
+ wqe = &cmdiocbq->wqe;
+ memset(wqe, 0, sizeof(*wqe));
+
+ /* Word 0 - 2 BDE */
+ bde = (struct ulp_bde64_le *)&wqe->generic.bde;
+ bde->addr_low = cpu_to_le32(putPaddrLow(bmp->phys));
+ bde->addr_high = cpu_to_le32(putPaddrHigh(bmp->phys));
+ bde->type_size = cpu_to_le32(cmd_size);
+ bde->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
+
+ if (expect_rsp) {
+ bf_set(wqe_cmnd, &wqe->els_req.wqe_com, CMD_ELS_REQUEST64_WQE);
+
+ /* Transfer length */
+ wqe->els_req.payload_len = cmd_size;
+ wqe->els_req.max_response_payload_len = FCELSSIZE;
+
+ /* DID */
+ bf_set(wqe_els_did, &wqe->els_req.wqe_dest, did);
+
+ /* Word 11 - ELS_ID */
+ switch (elscmd) {
+ case ELS_CMD_PLOGI:
+ els_id = LPFC_ELS_ID_PLOGI;
+ break;
+ case ELS_CMD_FLOGI:
+ els_id = LPFC_ELS_ID_FLOGI;
+ break;
+ case ELS_CMD_LOGO:
+ els_id = LPFC_ELS_ID_LOGO;
+ break;
+ case ELS_CMD_FDISC:
+ if (!vport->fc_myDID) {
+ els_id = LPFC_ELS_ID_FDISC;
+ break;
+ }
+ fallthrough;
+ default:
+ els_id = LPFC_ELS_ID_DEFAULT;
+ break;
+ }
+
+ bf_set(wqe_els_id, &wqe->els_req.wqe_com, els_id);
+ } else {
+ /* DID */
+ bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest, did);
+
+ /* Transfer length */
+ wqe->xmit_els_rsp.response_payload_len = cmd_size;
+
+ bf_set(wqe_cmnd, &wqe->xmit_els_rsp.wqe_com,
+ CMD_XMIT_ELS_RSP64_WQE);
+ }
+
+ bf_set(wqe_tmo, &wqe->generic.wqe_com, tmo);
+ bf_set(wqe_reqtag, &wqe->generic.wqe_com, cmdiocbq->iotag);
+ bf_set(wqe_class, &wqe->generic.wqe_com, CLASS3);
+
+ /* If we have NPIV enabled, we want to send ELS traffic by VPI.
+ * For SLI4, since the driver controls VPIs we also want to include
+ * all ELS pt2pt protocol traffic as well.
+ */
+ if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) ||
+ (vport->fc_flag & FC_PT2PT)) {
+ if (expect_rsp) {
+ bf_set(els_req64_sid, &wqe->els_req, vport->fc_myDID);
+
+ /* For ELS_REQUEST64_WQE, use the VPI by default */
+ bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
+ phba->vpi_ids[vport->vpi]);
+ }
+
+ /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
+ if (elscmd == ELS_CMD_ECHO)
+ bf_set(wqe_ct, &wqe->generic.wqe_com, 0);
+ else
+ bf_set(wqe_ct, &wqe->generic.wqe_com, 1);
+ }
+}
+
+void
+lpfc_sli_prep_els_req_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
+ u16 cmd_size, u32 did, u32 elscmd, u8 tmo,
+ u8 expect_rsp)
+{
+ phba->__lpfc_sli_prep_els_req_rsp(cmdiocbq, vport, bmp, cmd_size, did,
+ elscmd, tmo, expect_rsp);
+}
+
+static void
+__lpfc_sli_prep_gen_req_s3(struct lpfc_iocbq *cmdiocbq, struct lpfc_dmabuf *bmp,
+ u16 rpi, u32 num_entry, u8 tmo)
+{
+ IOCB_t *cmd;
+
+ cmd = &cmdiocbq->iocb;
+ memset(cmd, 0, sizeof(*cmd));
+
+ cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
+ cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
+ cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
+ cmd->un.genreq64.bdl.bdeSize = num_entry * sizeof(struct ulp_bde64);
+
+ cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
+ cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT;
+ cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
+
+ cmd->ulpContext = rpi;
+ cmd->ulpClass = CLASS3;
+ cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
+ cmd->ulpBdeCount = 1;
+ cmd->ulpLe = 1;
+ cmd->ulpOwner = OWN_CHIP;
+ cmd->ulpTimeout = tmo;
+}
+
+static void
+__lpfc_sli_prep_gen_req_s4(struct lpfc_iocbq *cmdiocbq, struct lpfc_dmabuf *bmp,
+ u16 rpi, u32 num_entry, u8 tmo)
+{
+ union lpfc_wqe128 *cmdwqe;
+ struct ulp_bde64_le *bde, *bpl;
+ u32 xmit_len = 0, total_len = 0, size, type, i;
+
+ cmdwqe = &cmdiocbq->wqe;
+ memset(cmdwqe, 0, sizeof(*cmdwqe));
+
+ /* Calculate total_len and xmit_len */
+ bpl = (struct ulp_bde64_le *)bmp->virt;
+ for (i = 0; i < num_entry; i++) {
+ size = le32_to_cpu(bpl[i].type_size) & ULP_BDE64_SIZE_MASK;
+ total_len += size;
+ }
+ for (i = 0; i < num_entry; i++) {
+ size = le32_to_cpu(bpl[i].type_size) & ULP_BDE64_SIZE_MASK;
+ type = le32_to_cpu(bpl[i].type_size) & ULP_BDE64_TYPE_MASK;
+ if (type != ULP_BDE64_TYPE_BDE_64)
+ break;
+ xmit_len += size;
+ }
+
+ /* Words 0 - 2 */
+ bde = (struct ulp_bde64_le *)&cmdwqe->generic.bde;
+ bde->addr_low = bpl->addr_low;
+ bde->addr_high = bpl->addr_high;
+ bde->type_size = cpu_to_le32(xmit_len);
+ bde->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
+
+ /* Word 3 */
+ cmdwqe->gen_req.request_payload_len = xmit_len;
+
+ /* Word 5 */
+ bf_set(wqe_type, &cmdwqe->gen_req.wge_ctl, FC_TYPE_CT);
+ bf_set(wqe_rctl, &cmdwqe->gen_req.wge_ctl, FC_RCTL_DD_UNSOL_CTL);
+ bf_set(wqe_si, &cmdwqe->gen_req.wge_ctl, 1);
+ bf_set(wqe_la, &cmdwqe->gen_req.wge_ctl, 1);
+
+ /* Word 6 */
+ bf_set(wqe_ctxt_tag, &cmdwqe->gen_req.wqe_com, rpi);
+
+ /* Word 7 */
+ bf_set(wqe_tmo, &cmdwqe->gen_req.wqe_com, tmo);
+ bf_set(wqe_class, &cmdwqe->gen_req.wqe_com, CLASS3);
+ bf_set(wqe_cmnd, &cmdwqe->gen_req.wqe_com, CMD_GEN_REQUEST64_CR);
+ bf_set(wqe_ct, &cmdwqe->gen_req.wqe_com, SLI4_CT_RPI);
+
+ /* Word 12 */
+ cmdwqe->gen_req.max_response_payload_len = total_len - xmit_len;
+}
+
+void
+lpfc_sli_prep_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_dmabuf *bmp, u16 rpi, u32 num_entry, u8 tmo)
+{
+ phba->__lpfc_sli_prep_gen_req(cmdiocbq, bmp, rpi, num_entry, tmo);
+}
+
+static void
+__lpfc_sli_prep_xmit_seq64_s3(struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_dmabuf *bmp, u16 rpi, u16 ox_id,
+ u32 num_entry, u8 rctl, u8 last_seq, u8 cr_cx_cmd)
+{
+ IOCB_t *icmd;
+
+ icmd = &cmdiocbq->iocb;
+ memset(icmd, 0, sizeof(*icmd));
+
+ icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
+ icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
+ icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
+ icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
+ icmd->un.xseq64.w5.hcsw.Fctl = LA;
+ if (last_seq)
+ icmd->un.xseq64.w5.hcsw.Fctl |= LS;
+ icmd->un.xseq64.w5.hcsw.Dfctl = 0;
+ icmd->un.xseq64.w5.hcsw.Rctl = rctl;
+ icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
+
+ icmd->ulpBdeCount = 1;
+ icmd->ulpLe = 1;
+ icmd->ulpClass = CLASS3;
+
+ switch (cr_cx_cmd) {
+ case CMD_XMIT_SEQUENCE64_CR:
+ icmd->ulpContext = rpi;
+ icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
+ break;
+ case CMD_XMIT_SEQUENCE64_CX:
+ icmd->ulpContext = ox_id;
+ icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+__lpfc_sli_prep_xmit_seq64_s4(struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_dmabuf *bmp, u16 rpi, u16 ox_id,
+ u32 full_size, u8 rctl, u8 last_seq, u8 cr_cx_cmd)
+{
+ union lpfc_wqe128 *wqe;
+ struct ulp_bde64 *bpl;
+
+ wqe = &cmdiocbq->wqe;
+ memset(wqe, 0, sizeof(*wqe));
+
+ /* Words 0 - 2 */
+ bpl = (struct ulp_bde64 *)bmp->virt;
+ wqe->xmit_sequence.bde.addrHigh = bpl->addrHigh;
+ wqe->xmit_sequence.bde.addrLow = bpl->addrLow;
+ wqe->xmit_sequence.bde.tus.w = bpl->tus.w;
+
+ /* Word 5 */
+ bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, last_seq);
+ bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 1);
+ bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0);
+ bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, rctl);
+ bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_CT);
+
+ /* Word 6 */
+ bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com, rpi);
+
+ bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com,
+ CMD_XMIT_SEQUENCE64_WQE);
+
+ /* Word 7 */
+ bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3);
+
+ /* Word 9 */
+ bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ox_id);
+
+ /* Word 12 */
+ if (cmdiocbq->cmd_flag & (LPFC_IO_LIBDFC | LPFC_IO_LOOPBACK))
+ wqe->xmit_sequence.xmit_len = full_size;
+ else
+ wqe->xmit_sequence.xmit_len =
+ wqe->xmit_sequence.bde.tus.f.bdeSize;
+}
+
+void
+lpfc_sli_prep_xmit_seq64(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_dmabuf *bmp, u16 rpi, u16 ox_id,
+ u32 num_entry, u8 rctl, u8 last_seq, u8 cr_cx_cmd)
+{
+ phba->__lpfc_sli_prep_xmit_seq64(cmdiocbq, bmp, rpi, ox_id, num_entry,
+ rctl, last_seq, cr_cx_cmd);
+}
+
+static void
+__lpfc_sli_prep_abort_xri_s3(struct lpfc_iocbq *cmdiocbq, u16 ulp_context,
+ u16 iotag, u8 ulp_class, u16 cqid, bool ia,
+ bool wqec)
+{
+ IOCB_t *icmd = NULL;
+
+ icmd = &cmdiocbq->iocb;
+ memset(icmd, 0, sizeof(*icmd));
+
+ /* Word 5 */
+ icmd->un.acxri.abortContextTag = ulp_context;
+ icmd->un.acxri.abortIoTag = iotag;
+
+ if (ia) {
+ /* Word 7 */
+ icmd->ulpCommand = CMD_CLOSE_XRI_CN;
+ } else {
+ /* Word 3 */
+ icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
+
+ /* Word 7 */
+ icmd->ulpClass = ulp_class;
+ icmd->ulpCommand = CMD_ABORT_XRI_CN;
+ }
+
+ /* Word 7 */
+ icmd->ulpLe = 1;
+}
+
+static void
+__lpfc_sli_prep_abort_xri_s4(struct lpfc_iocbq *cmdiocbq, u16 ulp_context,
+ u16 iotag, u8 ulp_class, u16 cqid, bool ia,
+ bool wqec)
+{
+ union lpfc_wqe128 *wqe;
+
+ wqe = &cmdiocbq->wqe;
+ memset(wqe, 0, sizeof(*wqe));
+
+ /* Word 3 */
+ bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG);
+ if (ia)
+ bf_set(abort_cmd_ia, &wqe->abort_cmd, 1);
+ else
+ bf_set(abort_cmd_ia, &wqe->abort_cmd, 0);
+
+ /* Word 7 */
+ bf_set(wqe_cmnd, &wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_WQE);
+
+ /* Word 8 */
+ wqe->abort_cmd.wqe_com.abort_tag = ulp_context;
+
+ /* Word 9 */
+ bf_set(wqe_reqtag, &wqe->abort_cmd.wqe_com, iotag);
+
+ /* Word 10 */
+ bf_set(wqe_qosd, &wqe->abort_cmd.wqe_com, 1);
+
+ /* Word 11 */
+ if (wqec)
+ bf_set(wqe_wqec, &wqe->abort_cmd.wqe_com, 1);
+ bf_set(wqe_cqid, &wqe->abort_cmd.wqe_com, cqid);
+ bf_set(wqe_cmd_type, &wqe->abort_cmd.wqe_com, OTHER_COMMAND);
+}
+
+void
+lpfc_sli_prep_abort_xri(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq,
+ u16 ulp_context, u16 iotag, u8 ulp_class, u16 cqid,
+ bool ia, bool wqec)
+{
+ phba->__lpfc_sli_prep_abort_xri(cmdiocbq, ulp_context, iotag, ulp_class,
+ cqid, ia, wqec);
+}
+
+/**
+ * lpfc_sli_api_table_setup - Set up sli api function jump table
+ * @phba: The hba struct for which this call is being executed.
+ * @dev_grp: The HBA PCI-Device group number.
+ *
+ * This routine sets up the SLI interface API function jump table in @phba
+ * struct.
+ * Returns: 0 - success, -ENODEV - failure.
+ **/
+int
+lpfc_sli_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
+{
+
+ switch (dev_grp) {
+ case LPFC_PCI_DEV_LP:
+ phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3;
+ phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3;
+ phba->__lpfc_sli_issue_fcp_io = __lpfc_sli_issue_fcp_io_s3;
+ phba->__lpfc_sli_prep_els_req_rsp = __lpfc_sli_prep_els_req_rsp_s3;
+ phba->__lpfc_sli_prep_gen_req = __lpfc_sli_prep_gen_req_s3;
+ phba->__lpfc_sli_prep_xmit_seq64 = __lpfc_sli_prep_xmit_seq64_s3;
+ phba->__lpfc_sli_prep_abort_xri = __lpfc_sli_prep_abort_xri_s3;
+ break;
+ case LPFC_PCI_DEV_OC:
+ phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s4;
+ phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s4;
+ phba->__lpfc_sli_issue_fcp_io = __lpfc_sli_issue_fcp_io_s4;
+ phba->__lpfc_sli_prep_els_req_rsp = __lpfc_sli_prep_els_req_rsp_s4;
+ phba->__lpfc_sli_prep_gen_req = __lpfc_sli_prep_gen_req_s4;
+ phba->__lpfc_sli_prep_xmit_seq64 = __lpfc_sli_prep_xmit_seq64_s4;
+ phba->__lpfc_sli_prep_abort_xri = __lpfc_sli_prep_abort_xri_s4;
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "1419 Invalid HBA PCI-device group: 0x%x\n",
+ dev_grp);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+/**
+ * lpfc_sli4_calc_ring - Calculates which ring to use
+ * @phba: Pointer to HBA context object.
+ * @piocb: Pointer to command iocb.
+ *
+ * For SLI4 only, FCP IO can deferred to one fo many WQs, based on
+ * hba_wqidx, thus we need to calculate the corresponding ring.
+ * Since ABORTS must go on the same WQ of the command they are
+ * aborting, we use command's hba_wqidx.
+ */
+struct lpfc_sli_ring *
+lpfc_sli4_calc_ring(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
+{
+ struct lpfc_io_buf *lpfc_cmd;
+
+ if (piocb->cmd_flag & (LPFC_IO_FCP | LPFC_USE_FCPWQIDX)) {
+ if (unlikely(!phba->sli4_hba.hdwq))
+ return NULL;
+ /*
+ * for abort iocb hba_wqidx should already
+ * be setup based on what work queue we used.
+ */
+ if (!(piocb->cmd_flag & LPFC_USE_FCPWQIDX)) {
+ lpfc_cmd = piocb->io_buf;
+ piocb->hba_wqidx = lpfc_cmd->hdwq_no;
+ }
+ return phba->sli4_hba.hdwq[piocb->hba_wqidx].io_wq->pring;
+ } else {
+ if (unlikely(!phba->sli4_hba.els_wq))
+ return NULL;
+ piocb->hba_wqidx = 0;
+ return phba->sli4_hba.els_wq->pring;
+ }
+}
+
+/**
+ * lpfc_sli_issue_iocb - Wrapper function for __lpfc_sli_issue_iocb
+ * @phba: Pointer to HBA context object.
+ * @ring_number: Ring number
+ * @piocb: Pointer to command iocb.
+ * @flag: Flag indicating if this command can be put into txq.
+ *
+ * lpfc_sli_issue_iocb is a wrapper around __lpfc_sli_issue_iocb
+ * function. This function gets the hbalock and calls
+ * __lpfc_sli_issue_iocb function and will return the error returned
+ * by __lpfc_sli_issue_iocb function. This wrapper is used by
+ * functions which do not hold hbalock.
+ **/
+int
+lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
+ struct lpfc_iocbq *piocb, uint32_t flag)
+{
+ struct lpfc_sli_ring *pring;
+ struct lpfc_queue *eq;
+ unsigned long iflags;
+ int rc;
+
+ /* If the PCI channel is in offline state, do not post iocbs. */
+ if (unlikely(pci_channel_offline(phba->pcidev)))
+ return IOCB_ERROR;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ lpfc_sli_prep_wqe(phba, piocb);
+
+ eq = phba->sli4_hba.hdwq[piocb->hba_wqidx].hba_eq;
+
+ pring = lpfc_sli4_calc_ring(phba, piocb);
+ if (unlikely(pring == NULL))
+ return IOCB_ERROR;
+
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+
+ lpfc_sli4_poll_eq(eq, LPFC_POLL_FASTPATH);
+ } else {
+ /* For now, SLI2/3 will still use hbalock */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ }
+ return rc;
+}
+
+/**
+ * lpfc_extra_ring_setup - Extra ring setup function
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called while driver attaches with the
+ * HBA to setup the extra ring. The extra ring is used
+ * only when driver needs to support target mode functionality
+ * or IP over FC functionalities.
+ *
+ * This function is called with no lock held. SLI3 only.
+ **/
+static int
+lpfc_extra_ring_setup( struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli;
+ struct lpfc_sli_ring *pring;
+
+ psli = &phba->sli;
+
+ /* Adjust cmd/rsp ring iocb entries more evenly */
+
+ /* Take some away from the FCP ring */
+ pring = &psli->sli3_ring[LPFC_FCP_RING];
+ pring->sli.sli3.numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
+ pring->sli.sli3.numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
+ pring->sli.sli3.numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
+ pring->sli.sli3.numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
+
+ /* and give them to the extra ring */
+ pring = &psli->sli3_ring[LPFC_EXTRA_RING];
+
+ pring->sli.sli3.numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
+ pring->sli.sli3.numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
+ pring->sli.sli3.numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
+ pring->sli.sli3.numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
+
+ /* Setup default profile for this ring */
+ pring->iotag_max = 4096;
+ pring->num_mask = 1;
+ pring->prt[0].profile = 0; /* Mask 0 */
+ pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
+ pring->prt[0].type = phba->cfg_multi_ring_type;
+ pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
+ return 0;
+}
+
+static void
+lpfc_sli_post_recovery_event(struct lpfc_hba *phba,
+ struct lpfc_nodelist *ndlp)
+{
+ unsigned long iflags;
+ struct lpfc_work_evt *evtp = &ndlp->recovery_evt;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ if (!list_empty(&evtp->evt_listp)) {
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return;
+ }
+
+ /* Incrementing the reference count until the queued work is done. */
+ evtp->evt_arg1 = lpfc_nlp_get(ndlp);
+ if (!evtp->evt_arg1) {
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return;
+ }
+ evtp->evt = LPFC_EVT_RECOVER_PORT;
+ list_add_tail(&evtp->evt_listp, &phba->work_list);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ lpfc_worker_wake_up(phba);
+}
+
+/* lpfc_sli_abts_err_handler - handle a failed ABTS request from an SLI3 port.
+ * @phba: Pointer to HBA context object.
+ * @iocbq: Pointer to iocb object.
+ *
+ * The async_event handler calls this routine when it receives
+ * an ASYNC_STATUS_CN event from the port. The port generates
+ * this event when an Abort Sequence request to an rport fails
+ * twice in succession. The abort could be originated by the
+ * driver or by the port. The ABTS could have been for an ELS
+ * or FCP IO. The port only generates this event when an ABTS
+ * fails to complete after one retry.
+ */
+static void
+lpfc_sli_abts_err_handler(struct lpfc_hba *phba,
+ struct lpfc_iocbq *iocbq)
+{
+ struct lpfc_nodelist *ndlp = NULL;
+ uint16_t rpi = 0, vpi = 0;
+ struct lpfc_vport *vport = NULL;
+
+ /* The rpi in the ulpContext is vport-sensitive. */
+ vpi = iocbq->iocb.un.asyncstat.sub_ctxt_tag;
+ rpi = iocbq->iocb.ulpContext;
+
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "3092 Port generated ABTS async event "
+ "on vpi %d rpi %d status 0x%x\n",
+ vpi, rpi, iocbq->iocb.ulpStatus);
+
+ vport = lpfc_find_vport_by_vpid(phba, vpi);
+ if (!vport)
+ goto err_exit;
+ ndlp = lpfc_findnode_rpi(vport, rpi);
+ if (!ndlp)
+ goto err_exit;
+
+ if (iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT)
+ lpfc_sli_abts_recover_port(vport, ndlp);
+ return;
+
+ err_exit:
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "3095 Event Context not found, no "
+ "action on vpi %d rpi %d status 0x%x, reason 0x%x\n",
+ vpi, rpi, iocbq->iocb.ulpStatus,
+ iocbq->iocb.ulpContext);
+}
+
+/* lpfc_sli4_abts_err_handler - handle a failed ABTS request from an SLI4 port.
+ * @phba: pointer to HBA context object.
+ * @ndlp: nodelist pointer for the impacted rport.
+ * @axri: pointer to the wcqe containing the failed exchange.
+ *
+ * The driver calls this routine when it receives an ABORT_XRI_FCP CQE from the
+ * port. The port generates this event when an abort exchange request to an
+ * rport fails twice in succession with no reply. The abort could be originated
+ * by the driver or by the port. The ABTS could have been for an ELS or FCP IO.
+ */
+void
+lpfc_sli4_abts_err_handler(struct lpfc_hba *phba,
+ struct lpfc_nodelist *ndlp,
+ struct sli4_wcqe_xri_aborted *axri)
+{
+ uint32_t ext_status = 0;
+
+ if (!ndlp) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "3115 Node Context not found, driver "
+ "ignoring abts err event\n");
+ return;
+ }
+
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "3116 Port generated FCP XRI ABORT event on "
+ "vpi %d rpi %d xri x%x status 0x%x parameter x%x\n",
+ ndlp->vport->vpi, phba->sli4_hba.rpi_ids[ndlp->nlp_rpi],
+ bf_get(lpfc_wcqe_xa_xri, axri),
+ bf_get(lpfc_wcqe_xa_status, axri),
+ axri->parameter);
+
+ /*
+ * Catch the ABTS protocol failure case. Older OCe FW releases returned
+ * LOCAL_REJECT and 0 for a failed ABTS exchange and later OCe and
+ * LPe FW releases returned LOCAL_REJECT and SEQUENCE_TIMEOUT.
+ */
+ ext_status = axri->parameter & IOERR_PARAM_MASK;
+ if ((bf_get(lpfc_wcqe_xa_status, axri) == IOSTAT_LOCAL_REJECT) &&
+ ((ext_status == IOERR_SEQUENCE_TIMEOUT) || (ext_status == 0)))
+ lpfc_sli_post_recovery_event(phba, ndlp);
+}
+
+/**
+ * lpfc_sli_async_event_handler - ASYNC iocb handler function
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @iocbq: Pointer to iocb object.
+ *
+ * This function is called by the slow ring event handler
+ * function when there is an ASYNC event iocb in the ring.
+ * This function is called with no lock held.
+ * Currently this function handles only temperature related
+ * ASYNC events. The function decodes the temperature sensor
+ * event message and posts events for the management applications.
+ **/
+static void
+lpfc_sli_async_event_handler(struct lpfc_hba * phba,
+ struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
+{
+ IOCB_t *icmd;
+ uint16_t evt_code;
+ struct temp_event temp_event_data;
+ struct Scsi_Host *shost;
+ uint32_t *iocb_w;
+
+ icmd = &iocbq->iocb;
+ evt_code = icmd->un.asyncstat.evt_code;
+
+ switch (evt_code) {
+ case ASYNC_TEMP_WARN:
+ case ASYNC_TEMP_SAFE:
+ temp_event_data.data = (uint32_t) icmd->ulpContext;
+ temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
+ if (evt_code == ASYNC_TEMP_WARN) {
+ temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0347 Adapter is very hot, please take "
+ "corrective action. temperature : %d Celsius\n",
+ (uint32_t) icmd->ulpContext);
+ } else {
+ temp_event_data.event_code = LPFC_NORMAL_TEMP;
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0340 Adapter temperature is OK now. "
+ "temperature : %d Celsius\n",
+ (uint32_t) icmd->ulpContext);
+ }
+
+ /* Send temperature change event to applications */
+ shost = lpfc_shost_from_vport(phba->pport);
+ fc_host_post_vendor_event(shost, fc_get_event_number(),
+ sizeof(temp_event_data), (char *) &temp_event_data,
+ LPFC_NL_VENDOR_ID);
+ break;
+ case ASYNC_STATUS_CN:
+ lpfc_sli_abts_err_handler(phba, iocbq);
+ break;
+ default:
+ iocb_w = (uint32_t *) icmd;
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0346 Ring %d handler: unexpected ASYNC_STATUS"
+ " evt_code 0x%x\n"
+ "W0 0x%08x W1 0x%08x W2 0x%08x W3 0x%08x\n"
+ "W4 0x%08x W5 0x%08x W6 0x%08x W7 0x%08x\n"
+ "W8 0x%08x W9 0x%08x W10 0x%08x W11 0x%08x\n"
+ "W12 0x%08x W13 0x%08x W14 0x%08x W15 0x%08x\n",
+ pring->ringno, icmd->un.asyncstat.evt_code,
+ iocb_w[0], iocb_w[1], iocb_w[2], iocb_w[3],
+ iocb_w[4], iocb_w[5], iocb_w[6], iocb_w[7],
+ iocb_w[8], iocb_w[9], iocb_w[10], iocb_w[11],
+ iocb_w[12], iocb_w[13], iocb_w[14], iocb_w[15]);
+
+ break;
+ }
+}
+
+
+/**
+ * lpfc_sli4_setup - SLI ring setup function
+ * @phba: Pointer to HBA context object.
+ *
+ * lpfc_sli_setup sets up rings of the SLI interface with
+ * number of iocbs per ring and iotags. This function is
+ * called while driver attach to the HBA and before the
+ * interrupts are enabled. So there is no need for locking.
+ *
+ * This function always returns 0.
+ **/
+int
+lpfc_sli4_setup(struct lpfc_hba *phba)
+{
+ struct lpfc_sli_ring *pring;
+
+ pring = phba->sli4_hba.els_wq->pring;
+ pring->num_mask = LPFC_MAX_RING_MASK;
+ pring->prt[0].profile = 0; /* Mask 0 */
+ pring->prt[0].rctl = FC_RCTL_ELS_REQ;
+ pring->prt[0].type = FC_TYPE_ELS;
+ pring->prt[0].lpfc_sli_rcv_unsol_event =
+ lpfc_els_unsol_event;
+ pring->prt[1].profile = 0; /* Mask 1 */
+ pring->prt[1].rctl = FC_RCTL_ELS_REP;
+ pring->prt[1].type = FC_TYPE_ELS;
+ pring->prt[1].lpfc_sli_rcv_unsol_event =
+ lpfc_els_unsol_event;
+ pring->prt[2].profile = 0; /* Mask 2 */
+ /* NameServer Inquiry */
+ pring->prt[2].rctl = FC_RCTL_DD_UNSOL_CTL;
+ /* NameServer */
+ pring->prt[2].type = FC_TYPE_CT;
+ pring->prt[2].lpfc_sli_rcv_unsol_event =
+ lpfc_ct_unsol_event;
+ pring->prt[3].profile = 0; /* Mask 3 */
+ /* NameServer response */
+ pring->prt[3].rctl = FC_RCTL_DD_SOL_CTL;
+ /* NameServer */
+ pring->prt[3].type = FC_TYPE_CT;
+ pring->prt[3].lpfc_sli_rcv_unsol_event =
+ lpfc_ct_unsol_event;
+ return 0;
+}
+
+/**
+ * lpfc_sli_setup - SLI ring setup function
+ * @phba: Pointer to HBA context object.
+ *
+ * lpfc_sli_setup sets up rings of the SLI interface with
+ * number of iocbs per ring and iotags. This function is
+ * called while driver attach to the HBA and before the
+ * interrupts are enabled. So there is no need for locking.
+ *
+ * This function always returns 0. SLI3 only.
+ **/
+int
+lpfc_sli_setup(struct lpfc_hba *phba)
+{
+ int i, totiocbsize = 0;
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_sli_ring *pring;
+
+ psli->num_rings = MAX_SLI3_CONFIGURED_RINGS;
+ psli->sli_flag = 0;
+
+ psli->iocbq_lookup = NULL;
+ psli->iocbq_lookup_len = 0;
+ psli->last_iotag = 0;
+
+ for (i = 0; i < psli->num_rings; i++) {
+ pring = &psli->sli3_ring[i];
+ switch (i) {
+ case LPFC_FCP_RING: /* ring 0 - FCP */
+ /* numCiocb and numRiocb are used in config_port */
+ pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
+ pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
+ pring->sli.sli3.numCiocb +=
+ SLI2_IOCB_CMD_R1XTRA_ENTRIES;
+ pring->sli.sli3.numRiocb +=
+ SLI2_IOCB_RSP_R1XTRA_ENTRIES;
+ pring->sli.sli3.numCiocb +=
+ SLI2_IOCB_CMD_R3XTRA_ENTRIES;
+ pring->sli.sli3.numRiocb +=
+ SLI2_IOCB_RSP_R3XTRA_ENTRIES;
+ pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ?
+ SLI3_IOCB_CMD_SIZE :
+ SLI2_IOCB_CMD_SIZE;
+ pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ?
+ SLI3_IOCB_RSP_SIZE :
+ SLI2_IOCB_RSP_SIZE;
+ pring->iotag_ctr = 0;
+ pring->iotag_max =
+ (phba->cfg_hba_queue_depth * 2);
+ pring->fast_iotag = pring->iotag_max;
+ pring->num_mask = 0;
+ break;
+ case LPFC_EXTRA_RING: /* ring 1 - EXTRA */
+ /* numCiocb and numRiocb are used in config_port */
+ pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
+ pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
+ pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ?
+ SLI3_IOCB_CMD_SIZE :
+ SLI2_IOCB_CMD_SIZE;
+ pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ?
+ SLI3_IOCB_RSP_SIZE :
+ SLI2_IOCB_RSP_SIZE;
+ pring->iotag_max = phba->cfg_hba_queue_depth;
+ pring->num_mask = 0;
+ break;
+ case LPFC_ELS_RING: /* ring 2 - ELS / CT */
+ /* numCiocb and numRiocb are used in config_port */
+ pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
+ pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
+ pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ?
+ SLI3_IOCB_CMD_SIZE :
+ SLI2_IOCB_CMD_SIZE;
+ pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ?
+ SLI3_IOCB_RSP_SIZE :
+ SLI2_IOCB_RSP_SIZE;
+ pring->fast_iotag = 0;
+ pring->iotag_ctr = 0;
+ pring->iotag_max = 4096;
+ pring->lpfc_sli_rcv_async_status =
+ lpfc_sli_async_event_handler;
+ pring->num_mask = LPFC_MAX_RING_MASK;
+ pring->prt[0].profile = 0; /* Mask 0 */
+ pring->prt[0].rctl = FC_RCTL_ELS_REQ;
+ pring->prt[0].type = FC_TYPE_ELS;
+ pring->prt[0].lpfc_sli_rcv_unsol_event =
+ lpfc_els_unsol_event;
+ pring->prt[1].profile = 0; /* Mask 1 */
+ pring->prt[1].rctl = FC_RCTL_ELS_REP;
+ pring->prt[1].type = FC_TYPE_ELS;
+ pring->prt[1].lpfc_sli_rcv_unsol_event =
+ lpfc_els_unsol_event;
+ pring->prt[2].profile = 0; /* Mask 2 */
+ /* NameServer Inquiry */
+ pring->prt[2].rctl = FC_RCTL_DD_UNSOL_CTL;
+ /* NameServer */
+ pring->prt[2].type = FC_TYPE_CT;
+ pring->prt[2].lpfc_sli_rcv_unsol_event =
+ lpfc_ct_unsol_event;
+ pring->prt[3].profile = 0; /* Mask 3 */
+ /* NameServer response */
+ pring->prt[3].rctl = FC_RCTL_DD_SOL_CTL;
+ /* NameServer */
+ pring->prt[3].type = FC_TYPE_CT;
+ pring->prt[3].lpfc_sli_rcv_unsol_event =
+ lpfc_ct_unsol_event;
+ break;
+ }
+ totiocbsize += (pring->sli.sli3.numCiocb *
+ pring->sli.sli3.sizeCiocb) +
+ (pring->sli.sli3.numRiocb * pring->sli.sli3.sizeRiocb);
+ }
+ if (totiocbsize > MAX_SLIM_IOCB_SIZE) {
+ /* Too many cmd / rsp ring entries in SLI2 SLIM */
+ printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in "
+ "SLI2 SLIM Data: x%x x%lx\n",
+ phba->brd_no, totiocbsize,
+ (unsigned long) MAX_SLIM_IOCB_SIZE);
+ }
+ if (phba->cfg_multi_ring_support == 2)
+ lpfc_extra_ring_setup(phba);
+
+ return 0;
+}
+
+/**
+ * lpfc_sli4_queue_init - Queue initialization function
+ * @phba: Pointer to HBA context object.
+ *
+ * lpfc_sli4_queue_init sets up mailbox queues and iocb queues for each
+ * ring. This function also initializes ring indices of each ring.
+ * This function is called during the initialization of the SLI
+ * interface of an HBA.
+ * This function is called with no lock held and always returns
+ * 1.
+ **/
+void
+lpfc_sli4_queue_init(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli;
+ struct lpfc_sli_ring *pring;
+ int i;
+
+ psli = &phba->sli;
+ spin_lock_irq(&phba->hbalock);
+ INIT_LIST_HEAD(&psli->mboxq);
+ INIT_LIST_HEAD(&psli->mboxq_cmpl);
+ /* Initialize list headers for txq and txcmplq as double linked lists */
+ for (i = 0; i < phba->cfg_hdw_queue; i++) {
+ pring = phba->sli4_hba.hdwq[i].io_wq->pring;
+ pring->flag = 0;
+ pring->ringno = LPFC_FCP_RING;
+ pring->txcmplq_cnt = 0;
+ INIT_LIST_HEAD(&pring->txq);
+ INIT_LIST_HEAD(&pring->txcmplq);
+ INIT_LIST_HEAD(&pring->iocb_continueq);
+ spin_lock_init(&pring->ring_lock);
+ }
+ pring = phba->sli4_hba.els_wq->pring;
+ pring->flag = 0;
+ pring->ringno = LPFC_ELS_RING;
+ pring->txcmplq_cnt = 0;
+ INIT_LIST_HEAD(&pring->txq);
+ INIT_LIST_HEAD(&pring->txcmplq);
+ INIT_LIST_HEAD(&pring->iocb_continueq);
+ spin_lock_init(&pring->ring_lock);
+
+ if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
+ pring = phba->sli4_hba.nvmels_wq->pring;
+ pring->flag = 0;
+ pring->ringno = LPFC_ELS_RING;
+ pring->txcmplq_cnt = 0;
+ INIT_LIST_HEAD(&pring->txq);
+ INIT_LIST_HEAD(&pring->txcmplq);
+ INIT_LIST_HEAD(&pring->iocb_continueq);
+ spin_lock_init(&pring->ring_lock);
+ }
+
+ spin_unlock_irq(&phba->hbalock);
+}
+
+/**
+ * lpfc_sli_queue_init - Queue initialization function
+ * @phba: Pointer to HBA context object.
+ *
+ * lpfc_sli_queue_init sets up mailbox queues and iocb queues for each
+ * ring. This function also initializes ring indices of each ring.
+ * This function is called during the initialization of the SLI
+ * interface of an HBA.
+ * This function is called with no lock held and always returns
+ * 1.
+ **/
+void
+lpfc_sli_queue_init(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli;
+ struct lpfc_sli_ring *pring;
+ int i;
+
+ psli = &phba->sli;
+ spin_lock_irq(&phba->hbalock);
+ INIT_LIST_HEAD(&psli->mboxq);
+ INIT_LIST_HEAD(&psli->mboxq_cmpl);
+ /* Initialize list headers for txq and txcmplq as double linked lists */
+ for (i = 0; i < psli->num_rings; i++) {
+ pring = &psli->sli3_ring[i];
+ pring->ringno = i;
+ pring->sli.sli3.next_cmdidx = 0;
+ pring->sli.sli3.local_getidx = 0;
+ pring->sli.sli3.cmdidx = 0;
+ INIT_LIST_HEAD(&pring->iocb_continueq);
+ INIT_LIST_HEAD(&pring->iocb_continue_saveq);
+ INIT_LIST_HEAD(&pring->postbufq);
+ pring->flag = 0;
+ INIT_LIST_HEAD(&pring->txq);
+ INIT_LIST_HEAD(&pring->txcmplq);
+ spin_lock_init(&pring->ring_lock);
+ }
+ spin_unlock_irq(&phba->hbalock);
+}
+
+/**
+ * lpfc_sli_mbox_sys_flush - Flush mailbox command sub-system
+ * @phba: Pointer to HBA context object.
+ *
+ * This routine flushes the mailbox command subsystem. It will unconditionally
+ * flush all the mailbox commands in the three possible stages in the mailbox
+ * command sub-system: pending mailbox command queue; the outstanding mailbox
+ * command; and completed mailbox command queue. It is caller's responsibility
+ * to make sure that the driver is in the proper state to flush the mailbox
+ * command sub-system. Namely, the posting of mailbox commands into the
+ * pending mailbox command queue from the various clients must be stopped;
+ * either the HBA is in a state that it will never works on the outstanding
+ * mailbox command (such as in EEH or ERATT conditions) or the outstanding
+ * mailbox command has been completed.
+ **/
+static void
+lpfc_sli_mbox_sys_flush(struct lpfc_hba *phba)
+{
+ LIST_HEAD(completions);
+ struct lpfc_sli *psli = &phba->sli;
+ LPFC_MBOXQ_t *pmb;
+ unsigned long iflag;
+
+ /* Disable softirqs, including timers from obtaining phba->hbalock */
+ local_bh_disable();
+
+ /* Flush all the mailbox commands in the mbox system */
+ spin_lock_irqsave(&phba->hbalock, iflag);
+
+ /* The pending mailbox command queue */
+ list_splice_init(&phba->sli.mboxq, &completions);
+ /* The outstanding active mailbox command */
+ if (psli->mbox_active) {
+ list_add_tail(&psli->mbox_active->list, &completions);
+ psli->mbox_active = NULL;
+ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ }
+ /* The completed mailbox command queue */
+ list_splice_init(&phba->sli.mboxq_cmpl, &completions);
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+
+ /* Enable softirqs again, done with phba->hbalock */
+ local_bh_enable();
+
+ /* Return all flushed mailbox commands with MBX_NOT_FINISHED status */
+ while (!list_empty(&completions)) {
+ list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
+ pmb->u.mb.mbxStatus = MBX_NOT_FINISHED;
+ if (pmb->mbox_cmpl)
+ pmb->mbox_cmpl(phba, pmb);
+ }
+}
+
+/**
+ * lpfc_sli_host_down - Vport cleanup function
+ * @vport: Pointer to virtual port object.
+ *
+ * lpfc_sli_host_down is called to clean up the resources
+ * associated with a vport before destroying virtual
+ * port data structures.
+ * This function does following operations:
+ * - Free discovery resources associated with this virtual
+ * port.
+ * - Free iocbs associated with this virtual port in
+ * the txq.
+ * - Send abort for all iocb commands associated with this
+ * vport in txcmplq.
+ *
+ * This function is called with no lock held and always returns 1.
+ **/
+int
+lpfc_sli_host_down(struct lpfc_vport *vport)
+{
+ LIST_HEAD(completions);
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_queue *qp = NULL;
+ struct lpfc_sli_ring *pring;
+ struct lpfc_iocbq *iocb, *next_iocb;
+ int i;
+ unsigned long flags = 0;
+ uint16_t prev_pring_flag;
+
+ lpfc_cleanup_discovery_resources(vport);
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+
+ /*
+ * Error everything on the txq since these iocbs
+ * have not been given to the FW yet.
+ * Also issue ABTS for everything on the txcmplq
+ */
+ if (phba->sli_rev != LPFC_SLI_REV4) {
+ for (i = 0; i < psli->num_rings; i++) {
+ pring = &psli->sli3_ring[i];
+ prev_pring_flag = pring->flag;
+ /* Only slow rings */
+ if (pring->ringno == LPFC_ELS_RING) {
+ pring->flag |= LPFC_DEFERRED_RING_EVENT;
+ /* Set the lpfc data pending flag */
+ set_bit(LPFC_DATA_READY, &phba->data_flags);
+ }
+ list_for_each_entry_safe(iocb, next_iocb,
+ &pring->txq, list) {
+ if (iocb->vport != vport)
+ continue;
+ list_move_tail(&iocb->list, &completions);
+ }
+ list_for_each_entry_safe(iocb, next_iocb,
+ &pring->txcmplq, list) {
+ if (iocb->vport != vport)
+ continue;
+ lpfc_sli_issue_abort_iotag(phba, pring, iocb,
+ NULL);
+ }
+ pring->flag = prev_pring_flag;
+ }
+ } else {
+ list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
+ pring = qp->pring;
+ if (!pring)
+ continue;
+ if (pring == phba->sli4_hba.els_wq->pring) {
+ pring->flag |= LPFC_DEFERRED_RING_EVENT;
+ /* Set the lpfc data pending flag */
+ set_bit(LPFC_DATA_READY, &phba->data_flags);
+ }
+ prev_pring_flag = pring->flag;
+ spin_lock(&pring->ring_lock);
+ list_for_each_entry_safe(iocb, next_iocb,
+ &pring->txq, list) {
+ if (iocb->vport != vport)
+ continue;
+ list_move_tail(&iocb->list, &completions);
+ }
+ spin_unlock(&pring->ring_lock);
+ list_for_each_entry_safe(iocb, next_iocb,
+ &pring->txcmplq, list) {
+ if (iocb->vport != vport)
+ continue;
+ lpfc_sli_issue_abort_iotag(phba, pring, iocb,
+ NULL);
+ }
+ pring->flag = prev_pring_flag;
+ }
+ }
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+
+ /* Make sure HBA is alive */
+ lpfc_issue_hb_tmo(phba);
+
+ /* Cancel all the IOCBs from the completions list */
+ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_DOWN);
+ return 1;
+}
+
+/**
+ * lpfc_sli_hba_down - Resource cleanup function for the HBA
+ * @phba: Pointer to HBA context object.
+ *
+ * This function cleans up all iocb, buffers, mailbox commands
+ * while shutting down the HBA. This function is called with no
+ * lock held and always returns 1.
+ * This function does the following to cleanup driver resources:
+ * - Free discovery resources for each virtual port
+ * - Cleanup any pending fabric iocbs
+ * - Iterate through the iocb txq and free each entry
+ * in the list.
+ * - Free up any buffer posted to the HBA
+ * - Free mailbox commands in the mailbox queue.
+ **/
+int
+lpfc_sli_hba_down(struct lpfc_hba *phba)
+{
+ LIST_HEAD(completions);
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_queue *qp = NULL;
+ struct lpfc_sli_ring *pring;
+ struct lpfc_dmabuf *buf_ptr;
+ unsigned long flags = 0;
+ int i;
+
+ /* Shutdown the mailbox command sub-system */
+ lpfc_sli_mbox_sys_shutdown(phba, LPFC_MBX_WAIT);
+
+ lpfc_hba_down_prep(phba);
+
+ /* Disable softirqs, including timers from obtaining phba->hbalock */
+ local_bh_disable();
+
+ lpfc_fabric_abort_hba(phba);
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+
+ /*
+ * Error everything on the txq since these iocbs
+ * have not been given to the FW yet.
+ */
+ if (phba->sli_rev != LPFC_SLI_REV4) {
+ for (i = 0; i < psli->num_rings; i++) {
+ pring = &psli->sli3_ring[i];
+ /* Only slow rings */
+ if (pring->ringno == LPFC_ELS_RING) {
+ pring->flag |= LPFC_DEFERRED_RING_EVENT;
+ /* Set the lpfc data pending flag */
+ set_bit(LPFC_DATA_READY, &phba->data_flags);
+ }
+ list_splice_init(&pring->txq, &completions);
+ }
+ } else {
+ list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
+ pring = qp->pring;
+ if (!pring)
+ continue;
+ spin_lock(&pring->ring_lock);
+ list_splice_init(&pring->txq, &completions);
+ spin_unlock(&pring->ring_lock);
+ if (pring == phba->sli4_hba.els_wq->pring) {
+ pring->flag |= LPFC_DEFERRED_RING_EVENT;
+ /* Set the lpfc data pending flag */
+ set_bit(LPFC_DATA_READY, &phba->data_flags);
+ }
+ }
+ }
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+
+ /* Cancel all the IOCBs from the completions list */
+ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_DOWN);
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+ list_splice_init(&phba->elsbuf, &completions);
+ phba->elsbuf_cnt = 0;
+ phba->elsbuf_prev_cnt = 0;
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+
+ while (!list_empty(&completions)) {
+ list_remove_head(&completions, buf_ptr,
+ struct lpfc_dmabuf, list);
+ lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
+ kfree(buf_ptr);
+ }
+
+ /* Enable softirqs again, done with phba->hbalock */
+ local_bh_enable();
+
+ /* Return any active mbox cmds */
+ del_timer_sync(&psli->mbox_tmo);
+
+ spin_lock_irqsave(&phba->pport->work_port_lock, flags);
+ phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
+ spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
+
+ return 1;
+}
+
+/**
+ * lpfc_sli_pcimem_bcopy - SLI memory copy function
+ * @srcp: Source memory pointer.
+ * @destp: Destination memory pointer.
+ * @cnt: Number of words required to be copied.
+ *
+ * This function is used for copying data between driver memory
+ * and the SLI memory. This function also changes the endianness
+ * of each word if native endianness is different from SLI
+ * endianness. This function can be called with or without
+ * lock.
+ **/
+void
+lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
+{
+ uint32_t *src = srcp;
+ uint32_t *dest = destp;
+ uint32_t ldata;
+ int i;
+
+ for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
+ ldata = *src;
+ ldata = le32_to_cpu(ldata);
+ *dest = ldata;
+ src++;
+ dest++;
+ }
+}
+
+
+/**
+ * lpfc_sli_bemem_bcopy - SLI memory copy function
+ * @srcp: Source memory pointer.
+ * @destp: Destination memory pointer.
+ * @cnt: Number of words required to be copied.
+ *
+ * This function is used for copying data between a data structure
+ * with big endian representation to local endianness.
+ * This function can be called with or without lock.
+ **/
+void
+lpfc_sli_bemem_bcopy(void *srcp, void *destp, uint32_t cnt)
+{
+ uint32_t *src = srcp;
+ uint32_t *dest = destp;
+ uint32_t ldata;
+ int i;
+
+ for (i = 0; i < (int)cnt; i += sizeof(uint32_t)) {
+ ldata = *src;
+ ldata = be32_to_cpu(ldata);
+ *dest = ldata;
+ src++;
+ dest++;
+ }
+}
+
+/**
+ * lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @mp: Pointer to driver buffer object.
+ *
+ * This function is called with no lock held.
+ * It always return zero after adding the buffer to the postbufq
+ * buffer list.
+ **/
+int
+lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_dmabuf *mp)
+{
+ /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
+ later */
+ spin_lock_irq(&phba->hbalock);
+ list_add_tail(&mp->list, &pring->postbufq);
+ pring->postbufq_cnt++;
+ spin_unlock_irq(&phba->hbalock);
+ return 0;
+}
+
+/**
+ * lpfc_sli_get_buffer_tag - allocates a tag for a CMD_QUE_XRI64_CX buffer
+ * @phba: Pointer to HBA context object.
+ *
+ * When HBQ is enabled, buffers are searched based on tags. This function
+ * allocates a tag for buffer posted using CMD_QUE_XRI64_CX iocb. The
+ * tag is bit wise or-ed with QUE_BUFTAG_BIT to make sure that the tag
+ * does not conflict with tags of buffer posted for unsolicited events.
+ * The function returns the allocated tag. The function is called with
+ * no locks held.
+ **/
+uint32_t
+lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
+{
+ spin_lock_irq(&phba->hbalock);
+ phba->buffer_tag_count++;
+ /*
+ * Always set the QUE_BUFTAG_BIT to distiguish between
+ * a tag assigned by HBQ.
+ */
+ phba->buffer_tag_count |= QUE_BUFTAG_BIT;
+ spin_unlock_irq(&phba->hbalock);
+ return phba->buffer_tag_count;
+}
+
+/**
+ * lpfc_sli_ring_taggedbuf_get - find HBQ buffer associated with given tag
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @tag: Buffer tag.
+ *
+ * Buffers posted using CMD_QUE_XRI64_CX iocb are in pring->postbufq
+ * list. After HBA DMA data to these buffers, CMD_IOCB_RET_XRI64_CX
+ * iocb is posted to the response ring with the tag of the buffer.
+ * This function searches the pring->postbufq list using the tag
+ * to find buffer associated with CMD_IOCB_RET_XRI64_CX
+ * iocb. If the buffer is found then lpfc_dmabuf object of the
+ * buffer is returned to the caller else NULL is returned.
+ * This function is called with no lock held.
+ **/
+struct lpfc_dmabuf *
+lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ uint32_t tag)
+{
+ struct lpfc_dmabuf *mp, *next_mp;
+ struct list_head *slp = &pring->postbufq;
+
+ /* Search postbufq, from the beginning, looking for a match on tag */
+ spin_lock_irq(&phba->hbalock);
+ list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
+ if (mp->buffer_tag == tag) {
+ list_del_init(&mp->list);
+ pring->postbufq_cnt--;
+ spin_unlock_irq(&phba->hbalock);
+ return mp;
+ }
+ }
+
+ spin_unlock_irq(&phba->hbalock);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0402 Cannot find virtual addr for buffer tag on "
+ "ring %d Data x%lx x%px x%px x%x\n",
+ pring->ringno, (unsigned long) tag,
+ slp->next, slp->prev, pring->postbufq_cnt);
+
+ return NULL;
+}
+
+/**
+ * lpfc_sli_ringpostbuf_get - search buffers for unsolicited CT and ELS events
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @phys: DMA address of the buffer.
+ *
+ * This function searches the buffer list using the dma_address
+ * of unsolicited event to find the driver's lpfc_dmabuf object
+ * corresponding to the dma_address. The function returns the
+ * lpfc_dmabuf object if a buffer is found else it returns NULL.
+ * This function is called by the ct and els unsolicited event
+ * handlers to get the buffer associated with the unsolicited
+ * event.
+ *
+ * This function is called with no lock held.
+ **/
+struct lpfc_dmabuf *
+lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ dma_addr_t phys)
+{
+ struct lpfc_dmabuf *mp, *next_mp;
+ struct list_head *slp = &pring->postbufq;
+
+ /* Search postbufq, from the beginning, looking for a match on phys */
+ spin_lock_irq(&phba->hbalock);
+ list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
+ if (mp->phys == phys) {
+ list_del_init(&mp->list);
+ pring->postbufq_cnt--;
+ spin_unlock_irq(&phba->hbalock);
+ return mp;
+ }
+ }
+
+ spin_unlock_irq(&phba->hbalock);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0410 Cannot find virtual addr for mapped buf on "
+ "ring %d Data x%llx x%px x%px x%x\n",
+ pring->ringno, (unsigned long long)phys,
+ slp->next, slp->prev, pring->postbufq_cnt);
+ return NULL;
+}
+
+/**
+ * lpfc_sli_abort_els_cmpl - Completion handler for the els abort iocbs
+ * @phba: Pointer to HBA context object.
+ * @cmdiocb: Pointer to driver command iocb object.
+ * @rspiocb: Pointer to driver response iocb object.
+ *
+ * This function is the completion handler for the abort iocbs for
+ * ELS commands. This function is called from the ELS ring event
+ * handler with no lock held. This function frees memory resources
+ * associated with the abort iocb.
+ **/
+static void
+lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
+ u32 ulp_word4 = get_job_word4(phba, rspiocb);
+ u8 cmnd = get_job_cmnd(phba, cmdiocb);
+
+ if (ulp_status) {
+ /*
+ * Assume that the port already completed and returned, or
+ * will return the iocb. Just Log the message.
+ */
+ if (phba->sli_rev < LPFC_SLI_REV4) {
+ if (cmnd == CMD_ABORT_XRI_CX &&
+ ulp_status == IOSTAT_LOCAL_REJECT &&
+ ulp_word4 == IOERR_ABORT_REQUESTED) {
+ goto release_iocb;
+ }
+ }
+
+ lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_SLI,
+ "0327 Cannot abort els iocb x%px "
+ "with io cmd xri %x abort tag : x%x, "
+ "abort status %x abort code %x\n",
+ cmdiocb, get_job_abtsiotag(phba, cmdiocb),
+ (phba->sli_rev == LPFC_SLI_REV4) ?
+ get_wqe_reqtag(cmdiocb) :
+ cmdiocb->iocb.un.acxri.abortContextTag,
+ ulp_status, ulp_word4);
+
+ }
+release_iocb:
+ lpfc_sli_release_iocbq(phba, cmdiocb);
+ return;
+}
+
+/**
+ * lpfc_ignore_els_cmpl - Completion handler for aborted ELS command
+ * @phba: Pointer to HBA context object.
+ * @cmdiocb: Pointer to driver command iocb object.
+ * @rspiocb: Pointer to driver response iocb object.
+ *
+ * The function is called from SLI ring event handler with no
+ * lock held. This function is the completion handler for ELS commands
+ * which are aborted. The function frees memory resources used for
+ * the aborted ELS commands.
+ **/
+void
+lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
+ IOCB_t *irsp;
+ LPFC_MBOXQ_t *mbox;
+ u32 ulp_command, ulp_status, ulp_word4, iotag;
+
+ ulp_command = get_job_cmnd(phba, cmdiocb);
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ iotag = get_wqe_reqtag(cmdiocb);
+ } else {
+ irsp = &rspiocb->iocb;
+ iotag = irsp->ulpIoTag;
+
+ /* It is possible a PLOGI_RJT for NPIV ports to get aborted.
+ * The MBX_REG_LOGIN64 mbox command is freed back to the
+ * mbox_mem_pool here.
+ */
+ if (cmdiocb->context_un.mbox) {
+ mbox = cmdiocb->context_un.mbox;
+ lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
+ cmdiocb->context_un.mbox = NULL;
+ }
+ }
+
+ /* ELS cmd tag <ulpIoTag> completes */
+ lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+ "0139 Ignoring ELS cmd code x%x completion Data: "
+ "x%x x%x x%x x%px\n",
+ ulp_command, ulp_status, ulp_word4, iotag,
+ cmdiocb->ndlp);
+ /*
+ * Deref the ndlp after free_iocb. sli_release_iocb will access the ndlp
+ * if exchange is busy.
+ */
+ if (ulp_command == CMD_GEN_REQUEST64_CR)
+ lpfc_ct_free_iocb(phba, cmdiocb);
+ else
+ lpfc_els_free_iocb(phba, cmdiocb);
+
+ lpfc_nlp_put(ndlp);
+}
+
+/**
+ * lpfc_sli_issue_abort_iotag - Abort function for a command iocb
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @cmdiocb: Pointer to driver command iocb object.
+ * @cmpl: completion function.
+ *
+ * This function issues an abort iocb for the provided command iocb. In case
+ * of unloading, the abort iocb will not be issued to commands on the ELS
+ * ring. Instead, the callback function shall be changed to those commands
+ * so that nothing happens when them finishes. This function is called with
+ * hbalock held andno ring_lock held (SLI4). The function returns IOCB_SUCCESS
+ * when the command iocb is an abort request.
+ *
+ **/
+int
+lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *cmdiocb, void *cmpl)
+{
+ struct lpfc_vport *vport = cmdiocb->vport;
+ struct lpfc_iocbq *abtsiocbp;
+ int retval = IOCB_ERROR;
+ unsigned long iflags;
+ struct lpfc_nodelist *ndlp = NULL;
+ u32 ulp_command = get_job_cmnd(phba, cmdiocb);
+ u16 ulp_context, iotag;
+ bool ia;
+
+ /*
+ * There are certain command types we don't want to abort. And we
+ * don't want to abort commands that are already in the process of
+ * being aborted.
+ */
+ if (ulp_command == CMD_ABORT_XRI_WQE ||
+ ulp_command == CMD_ABORT_XRI_CN ||
+ ulp_command == CMD_CLOSE_XRI_CN ||
+ cmdiocb->cmd_flag & LPFC_DRIVER_ABORTED)
+ return IOCB_ABORTING;
+
+ if (!pring) {
+ if (cmdiocb->cmd_flag & LPFC_IO_FABRIC)
+ cmdiocb->fabric_cmd_cmpl = lpfc_ignore_els_cmpl;
+ else
+ cmdiocb->cmd_cmpl = lpfc_ignore_els_cmpl;
+ return retval;
+ }
+
+ /*
+ * If we're unloading, don't abort iocb on the ELS ring, but change
+ * the callback so that nothing happens when it finishes.
+ */
+ if ((vport->load_flag & FC_UNLOADING) &&
+ pring->ringno == LPFC_ELS_RING) {
+ if (cmdiocb->cmd_flag & LPFC_IO_FABRIC)
+ cmdiocb->fabric_cmd_cmpl = lpfc_ignore_els_cmpl;
+ else
+ cmdiocb->cmd_cmpl = lpfc_ignore_els_cmpl;
+ return retval;
+ }
+
+ /* issue ABTS for this IOCB based on iotag */
+ abtsiocbp = __lpfc_sli_get_iocbq(phba);
+ if (abtsiocbp == NULL)
+ return IOCB_NORESOURCE;
+
+ /* This signals the response to set the correct status
+ * before calling the completion handler
+ */
+ cmdiocb->cmd_flag |= LPFC_DRIVER_ABORTED;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ ulp_context = cmdiocb->sli4_xritag;
+ iotag = abtsiocbp->iotag;
+ } else {
+ iotag = cmdiocb->iocb.ulpIoTag;
+ if (pring->ringno == LPFC_ELS_RING) {
+ ndlp = cmdiocb->ndlp;
+ ulp_context = ndlp->nlp_rpi;
+ } else {
+ ulp_context = cmdiocb->iocb.ulpContext;
+ }
+ }
+
+ if (phba->link_state < LPFC_LINK_UP ||
+ (phba->sli_rev == LPFC_SLI_REV4 &&
+ phba->sli4_hba.link_state.status == LPFC_FC_LA_TYPE_LINK_DOWN) ||
+ (phba->link_flag & LS_EXTERNAL_LOOPBACK))
+ ia = true;
+ else
+ ia = false;
+
+ lpfc_sli_prep_abort_xri(phba, abtsiocbp, ulp_context, iotag,
+ cmdiocb->iocb.ulpClass,
+ LPFC_WQE_CQ_ID_DEFAULT, ia, false);
+
+ abtsiocbp->vport = vport;
+
+ /* ABTS WQE must go to the same WQ as the WQE to be aborted */
+ abtsiocbp->hba_wqidx = cmdiocb->hba_wqidx;
+ if (cmdiocb->cmd_flag & LPFC_IO_FCP)
+ abtsiocbp->cmd_flag |= (LPFC_IO_FCP | LPFC_USE_FCPWQIDX);
+
+ if (cmdiocb->cmd_flag & LPFC_IO_FOF)
+ abtsiocbp->cmd_flag |= LPFC_IO_FOF;
+
+ if (cmpl)
+ abtsiocbp->cmd_cmpl = cmpl;
+ else
+ abtsiocbp->cmd_cmpl = lpfc_sli_abort_els_cmpl;
+ abtsiocbp->vport = vport;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ pring = lpfc_sli4_calc_ring(phba, abtsiocbp);
+ if (unlikely(pring == NULL))
+ goto abort_iotag_exit;
+ /* Note: both hbalock and ring_lock need to be set here */
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ retval = __lpfc_sli_issue_iocb(phba, pring->ringno,
+ abtsiocbp, 0);
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ } else {
+ retval = __lpfc_sli_issue_iocb(phba, pring->ringno,
+ abtsiocbp, 0);
+ }
+
+abort_iotag_exit:
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
+ "0339 Abort IO XRI x%x, Original iotag x%x, "
+ "abort tag x%x Cmdjob : x%px Abortjob : x%px "
+ "retval x%x\n",
+ ulp_context, (phba->sli_rev == LPFC_SLI_REV4) ?
+ cmdiocb->iotag : iotag, iotag, cmdiocb, abtsiocbp,
+ retval);
+ if (retval) {
+ cmdiocb->cmd_flag &= ~LPFC_DRIVER_ABORTED;
+ __lpfc_sli_release_iocbq(phba, abtsiocbp);
+ }
+
+ /*
+ * Caller to this routine should check for IOCB_ERROR
+ * and handle it properly. This routine no longer removes
+ * iocb off txcmplq and call compl in case of IOCB_ERROR.
+ */
+ return retval;
+}
+
+/**
+ * lpfc_sli_hba_iocb_abort - Abort all iocbs to an hba.
+ * @phba: pointer to lpfc HBA data structure.
+ *
+ * This routine will abort all pending and outstanding iocbs to an HBA.
+ **/
+void
+lpfc_sli_hba_iocb_abort(struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_sli_ring *pring;
+ struct lpfc_queue *qp = NULL;
+ int i;
+
+ if (phba->sli_rev != LPFC_SLI_REV4) {
+ for (i = 0; i < psli->num_rings; i++) {
+ pring = &psli->sli3_ring[i];
+ lpfc_sli_abort_iocb_ring(phba, pring);
+ }
+ return;
+ }
+ list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
+ pring = qp->pring;
+ if (!pring)
+ continue;
+ lpfc_sli_abort_iocb_ring(phba, pring);
+ }
+}
+
+/**
+ * lpfc_sli_validate_fcp_iocb_for_abort - filter iocbs appropriate for FCP aborts
+ * @iocbq: Pointer to iocb object.
+ * @vport: Pointer to driver virtual port object.
+ *
+ * This function acts as an iocb filter for functions which abort FCP iocbs.
+ *
+ * Return values
+ * -ENODEV, if a null iocb or vport ptr is encountered
+ * -EINVAL, if the iocb is not an FCP I/O, not on the TX cmpl queue, premarked as
+ * driver already started the abort process, or is an abort iocb itself
+ * 0, passes criteria for aborting the FCP I/O iocb
+ **/
+static int
+lpfc_sli_validate_fcp_iocb_for_abort(struct lpfc_iocbq *iocbq,
+ struct lpfc_vport *vport)
+{
+ u8 ulp_command;
+
+ /* No null ptr vports */
+ if (!iocbq || iocbq->vport != vport)
+ return -ENODEV;
+
+ /* iocb must be for FCP IO, already exists on the TX cmpl queue,
+ * can't be premarked as driver aborted, nor be an ABORT iocb itself
+ */
+ ulp_command = get_job_cmnd(vport->phba, iocbq);
+ if (!(iocbq->cmd_flag & LPFC_IO_FCP) ||
+ !(iocbq->cmd_flag & LPFC_IO_ON_TXCMPLQ) ||
+ (iocbq->cmd_flag & LPFC_DRIVER_ABORTED) ||
+ (ulp_command == CMD_ABORT_XRI_CN ||
+ ulp_command == CMD_CLOSE_XRI_CN ||
+ ulp_command == CMD_ABORT_XRI_WQE))
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * lpfc_sli_validate_fcp_iocb - validate commands associated with a SCSI target
+ * @iocbq: Pointer to driver iocb object.
+ * @vport: Pointer to driver virtual port object.
+ * @tgt_id: SCSI ID of the target.
+ * @lun_id: LUN ID of the scsi device.
+ * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST
+ *
+ * This function acts as an iocb filter for validating a lun/SCSI target/SCSI
+ * host.
+ *
+ * It will return
+ * 0 if the filtering criteria is met for the given iocb and will return
+ * 1 if the filtering criteria is not met.
+ * If ctx_cmd == LPFC_CTX_LUN, the function returns 0 only if the
+ * given iocb is for the SCSI device specified by vport, tgt_id and
+ * lun_id parameter.
+ * If ctx_cmd == LPFC_CTX_TGT, the function returns 0 only if the
+ * given iocb is for the SCSI target specified by vport and tgt_id
+ * parameters.
+ * If ctx_cmd == LPFC_CTX_HOST, the function returns 0 only if the
+ * given iocb is for the SCSI host associated with the given vport.
+ * This function is called with no locks held.
+ **/
+static int
+lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport,
+ uint16_t tgt_id, uint64_t lun_id,
+ lpfc_ctx_cmd ctx_cmd)
+{
+ struct lpfc_io_buf *lpfc_cmd;
+ int rc = 1;
+
+ lpfc_cmd = container_of(iocbq, struct lpfc_io_buf, cur_iocbq);
+
+ if (lpfc_cmd->pCmd == NULL)
+ return rc;
+
+ switch (ctx_cmd) {
+ case LPFC_CTX_LUN:
+ if ((lpfc_cmd->rdata) && (lpfc_cmd->rdata->pnode) &&
+ (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id) &&
+ (scsilun_to_int(&lpfc_cmd->fcp_cmnd->fcp_lun) == lun_id))
+ rc = 0;
+ break;
+ case LPFC_CTX_TGT:
+ if ((lpfc_cmd->rdata) && (lpfc_cmd->rdata->pnode) &&
+ (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id))
+ rc = 0;
+ break;
+ case LPFC_CTX_HOST:
+ rc = 0;
+ break;
+ default:
+ printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
+ __func__, ctx_cmd);
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * lpfc_sli_sum_iocb - Function to count the number of FCP iocbs pending
+ * @vport: Pointer to virtual port.
+ * @tgt_id: SCSI ID of the target.
+ * @lun_id: LUN ID of the scsi device.
+ * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
+ *
+ * This function returns number of FCP commands pending for the vport.
+ * When ctx_cmd == LPFC_CTX_LUN, the function returns number of FCP
+ * commands pending on the vport associated with SCSI device specified
+ * by tgt_id and lun_id parameters.
+ * When ctx_cmd == LPFC_CTX_TGT, the function returns number of FCP
+ * commands pending on the vport associated with SCSI target specified
+ * by tgt_id parameter.
+ * When ctx_cmd == LPFC_CTX_HOST, the function returns number of FCP
+ * commands pending on the vport.
+ * This function returns the number of iocbs which satisfy the filter.
+ * This function is called without any lock held.
+ **/
+int
+lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
+ lpfc_ctx_cmd ctx_cmd)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *iocbq;
+ int sum, i;
+ unsigned long iflags;
+ u8 ulp_command;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
+ iocbq = phba->sli.iocbq_lookup[i];
+
+ if (!iocbq || iocbq->vport != vport)
+ continue;
+ if (!(iocbq->cmd_flag & LPFC_IO_FCP) ||
+ !(iocbq->cmd_flag & LPFC_IO_ON_TXCMPLQ))
+ continue;
+
+ /* Include counting outstanding aborts */
+ ulp_command = get_job_cmnd(phba, iocbq);
+ if (ulp_command == CMD_ABORT_XRI_CN ||
+ ulp_command == CMD_CLOSE_XRI_CN ||
+ ulp_command == CMD_ABORT_XRI_WQE) {
+ sum++;
+ continue;
+ }
+
+ if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
+ ctx_cmd) == 0)
+ sum++;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ return sum;
+}
+
+/**
+ * lpfc_sli_abort_fcp_cmpl - Completion handler function for aborted FCP IOCBs
+ * @phba: Pointer to HBA context object
+ * @cmdiocb: Pointer to command iocb object.
+ * @rspiocb: Pointer to response iocb object.
+ *
+ * This function is called when an aborted FCP iocb completes. This
+ * function is called by the ring event handler with no lock held.
+ * This function frees the iocb.
+ **/
+void
+lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "3096 ABORT_XRI_CX completing on rpi x%x "
+ "original iotag x%x, abort cmd iotag x%x "
+ "status 0x%x, reason 0x%x\n",
+ (phba->sli_rev == LPFC_SLI_REV4) ?
+ cmdiocb->sli4_xritag :
+ cmdiocb->iocb.un.acxri.abortContextTag,
+ get_job_abtsiotag(phba, cmdiocb),
+ cmdiocb->iotag, get_job_ulpstatus(phba, rspiocb),
+ get_job_word4(phba, rspiocb));
+ lpfc_sli_release_iocbq(phba, cmdiocb);
+ return;
+}
+
+/**
+ * lpfc_sli_abort_iocb - issue abort for all commands on a host/target/LUN
+ * @vport: Pointer to virtual port.
+ * @tgt_id: SCSI ID of the target.
+ * @lun_id: LUN ID of the scsi device.
+ * @abort_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
+ *
+ * This function sends an abort command for every SCSI command
+ * associated with the given virtual port pending on the ring
+ * filtered by lpfc_sli_validate_fcp_iocb_for_abort and then
+ * lpfc_sli_validate_fcp_iocb function. The ordering for validation before
+ * submitting abort iocbs must be lpfc_sli_validate_fcp_iocb_for_abort
+ * followed by lpfc_sli_validate_fcp_iocb.
+ *
+ * When abort_cmd == LPFC_CTX_LUN, the function sends abort only to the
+ * FCP iocbs associated with lun specified by tgt_id and lun_id
+ * parameters
+ * When abort_cmd == LPFC_CTX_TGT, the function sends abort only to the
+ * FCP iocbs associated with SCSI target specified by tgt_id parameter.
+ * When abort_cmd == LPFC_CTX_HOST, the function sends abort to all
+ * FCP iocbs associated with virtual port.
+ * The pring used for SLI3 is sli3_ring[LPFC_FCP_RING], for SLI4
+ * lpfc_sli4_calc_ring is used.
+ * This function returns number of iocbs it failed to abort.
+ * This function is called with no locks held.
+ **/
+int
+lpfc_sli_abort_iocb(struct lpfc_vport *vport, u16 tgt_id, u64 lun_id,
+ lpfc_ctx_cmd abort_cmd)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_sli_ring *pring = NULL;
+ struct lpfc_iocbq *iocbq;
+ int errcnt = 0, ret_val = 0;
+ unsigned long iflags;
+ int i;
+
+ /* all I/Os are in process of being flushed */
+ if (phba->hba_flag & HBA_IOQ_FLUSH)
+ return errcnt;
+
+ for (i = 1; i <= phba->sli.last_iotag; i++) {
+ iocbq = phba->sli.iocbq_lookup[i];
+
+ if (lpfc_sli_validate_fcp_iocb_for_abort(iocbq, vport))
+ continue;
+
+ if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
+ abort_cmd) != 0)
+ continue;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ if (phba->sli_rev == LPFC_SLI_REV3) {
+ pring = &phba->sli.sli3_ring[LPFC_FCP_RING];
+ } else if (phba->sli_rev == LPFC_SLI_REV4) {
+ pring = lpfc_sli4_calc_ring(phba, iocbq);
+ }
+ ret_val = lpfc_sli_issue_abort_iotag(phba, pring, iocbq,
+ lpfc_sli_abort_fcp_cmpl);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ if (ret_val != IOCB_SUCCESS)
+ errcnt++;
+ }
+
+ return errcnt;
+}
+
+/**
+ * lpfc_sli_abort_taskmgmt - issue abort for all commands on a host/target/LUN
+ * @vport: Pointer to virtual port.
+ * @pring: Pointer to driver SLI ring object.
+ * @tgt_id: SCSI ID of the target.
+ * @lun_id: LUN ID of the scsi device.
+ * @cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
+ *
+ * This function sends an abort command for every SCSI command
+ * associated with the given virtual port pending on the ring
+ * filtered by lpfc_sli_validate_fcp_iocb_for_abort and then
+ * lpfc_sli_validate_fcp_iocb function. The ordering for validation before
+ * submitting abort iocbs must be lpfc_sli_validate_fcp_iocb_for_abort
+ * followed by lpfc_sli_validate_fcp_iocb.
+ *
+ * When taskmgmt_cmd == LPFC_CTX_LUN, the function sends abort only to the
+ * FCP iocbs associated with lun specified by tgt_id and lun_id
+ * parameters
+ * When taskmgmt_cmd == LPFC_CTX_TGT, the function sends abort only to the
+ * FCP iocbs associated with SCSI target specified by tgt_id parameter.
+ * When taskmgmt_cmd == LPFC_CTX_HOST, the function sends abort to all
+ * FCP iocbs associated with virtual port.
+ * This function returns number of iocbs it aborted .
+ * This function is called with no locks held right after a taskmgmt
+ * command is sent.
+ **/
+int
+lpfc_sli_abort_taskmgmt(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
+ uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd cmd)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_io_buf *lpfc_cmd;
+ struct lpfc_iocbq *abtsiocbq;
+ struct lpfc_nodelist *ndlp = NULL;
+ struct lpfc_iocbq *iocbq;
+ int sum, i, ret_val;
+ unsigned long iflags;
+ struct lpfc_sli_ring *pring_s4 = NULL;
+ u16 ulp_context, iotag, cqid = LPFC_WQE_CQ_ID_DEFAULT;
+ bool ia;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+
+ /* all I/Os are in process of being flushed */
+ if (phba->hba_flag & HBA_IOQ_FLUSH) {
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return 0;
+ }
+ sum = 0;
+
+ for (i = 1; i <= phba->sli.last_iotag; i++) {
+ iocbq = phba->sli.iocbq_lookup[i];
+
+ if (lpfc_sli_validate_fcp_iocb_for_abort(iocbq, vport))
+ continue;
+
+ if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
+ cmd) != 0)
+ continue;
+
+ /* Guard against IO completion being called at same time */
+ lpfc_cmd = container_of(iocbq, struct lpfc_io_buf, cur_iocbq);
+ spin_lock(&lpfc_cmd->buf_lock);
+
+ if (!lpfc_cmd->pCmd) {
+ spin_unlock(&lpfc_cmd->buf_lock);
+ continue;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ pring_s4 =
+ phba->sli4_hba.hdwq[iocbq->hba_wqidx].io_wq->pring;
+ if (!pring_s4) {
+ spin_unlock(&lpfc_cmd->buf_lock);
+ continue;
+ }
+ /* Note: both hbalock and ring_lock must be set here */
+ spin_lock(&pring_s4->ring_lock);
+ }
+
+ /*
+ * If the iocbq is already being aborted, don't take a second
+ * action, but do count it.
+ */
+ if ((iocbq->cmd_flag & LPFC_DRIVER_ABORTED) ||
+ !(iocbq->cmd_flag & LPFC_IO_ON_TXCMPLQ)) {
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock(&pring_s4->ring_lock);
+ spin_unlock(&lpfc_cmd->buf_lock);
+ continue;
+ }
+
+ /* issue ABTS for this IOCB based on iotag */
+ abtsiocbq = __lpfc_sli_get_iocbq(phba);
+ if (!abtsiocbq) {
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock(&pring_s4->ring_lock);
+ spin_unlock(&lpfc_cmd->buf_lock);
+ continue;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ iotag = abtsiocbq->iotag;
+ ulp_context = iocbq->sli4_xritag;
+ cqid = lpfc_cmd->hdwq->io_cq_map;
+ } else {
+ iotag = iocbq->iocb.ulpIoTag;
+ if (pring->ringno == LPFC_ELS_RING) {
+ ndlp = iocbq->ndlp;
+ ulp_context = ndlp->nlp_rpi;
+ } else {
+ ulp_context = iocbq->iocb.ulpContext;
+ }
+ }
+
+ ndlp = lpfc_cmd->rdata->pnode;
+
+ if (lpfc_is_link_up(phba) &&
+ (ndlp && ndlp->nlp_state == NLP_STE_MAPPED_NODE) &&
+ !(phba->link_flag & LS_EXTERNAL_LOOPBACK))
+ ia = false;
+ else
+ ia = true;
+
+ lpfc_sli_prep_abort_xri(phba, abtsiocbq, ulp_context, iotag,
+ iocbq->iocb.ulpClass, cqid,
+ ia, false);
+
+ abtsiocbq->vport = vport;
+
+ /* ABTS WQE must go to the same WQ as the WQE to be aborted */
+ abtsiocbq->hba_wqidx = iocbq->hba_wqidx;
+ if (iocbq->cmd_flag & LPFC_IO_FCP)
+ abtsiocbq->cmd_flag |= LPFC_USE_FCPWQIDX;
+ if (iocbq->cmd_flag & LPFC_IO_FOF)
+ abtsiocbq->cmd_flag |= LPFC_IO_FOF;
+
+ /* Setup callback routine and issue the command. */
+ abtsiocbq->cmd_cmpl = lpfc_sli_abort_fcp_cmpl;
+
+ /*
+ * Indicate the IO is being aborted by the driver and set
+ * the caller's flag into the aborted IO.
+ */
+ iocbq->cmd_flag |= LPFC_DRIVER_ABORTED;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
+ abtsiocbq, 0);
+ spin_unlock(&pring_s4->ring_lock);
+ } else {
+ ret_val = __lpfc_sli_issue_iocb(phba, pring->ringno,
+ abtsiocbq, 0);
+ }
+
+ spin_unlock(&lpfc_cmd->buf_lock);
+
+ if (ret_val == IOCB_ERROR)
+ __lpfc_sli_release_iocbq(phba, abtsiocbq);
+ else
+ sum++;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return sum;
+}
+
+/**
+ * lpfc_sli_wake_iocb_wait - lpfc_sli_issue_iocb_wait's completion handler
+ * @phba: Pointer to HBA context object.
+ * @cmdiocbq: Pointer to command iocb.
+ * @rspiocbq: Pointer to response iocb.
+ *
+ * This function is the completion handler for iocbs issued using
+ * lpfc_sli_issue_iocb_wait function. This function is called by the
+ * ring event handler function without any lock held. This function
+ * can be called from both worker thread context and interrupt
+ * context. This function also can be called from other thread which
+ * cleans up the SLI layer objects.
+ * This function copy the contents of the response iocb to the
+ * response iocb memory object provided by the caller of
+ * lpfc_sli_issue_iocb_wait and then wakes up the thread which
+ * sleeps for the iocb completion.
+ **/
+static void
+lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
+ struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_iocbq *rspiocbq)
+{
+ wait_queue_head_t *pdone_q;
+ unsigned long iflags;
+ struct lpfc_io_buf *lpfc_cmd;
+ size_t offset = offsetof(struct lpfc_iocbq, wqe);
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ if (cmdiocbq->cmd_flag & LPFC_IO_WAKE_TMO) {
+
+ /*
+ * A time out has occurred for the iocb. If a time out
+ * completion handler has been supplied, call it. Otherwise,
+ * just free the iocbq.
+ */
+
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ cmdiocbq->cmd_cmpl = cmdiocbq->wait_cmd_cmpl;
+ cmdiocbq->wait_cmd_cmpl = NULL;
+ if (cmdiocbq->cmd_cmpl)
+ cmdiocbq->cmd_cmpl(phba, cmdiocbq, NULL);
+ else
+ lpfc_sli_release_iocbq(phba, cmdiocbq);
+ return;
+ }
+
+ /* Copy the contents of the local rspiocb into the caller's buffer. */
+ cmdiocbq->cmd_flag |= LPFC_IO_WAKE;
+ if (cmdiocbq->rsp_iocb && rspiocbq)
+ memcpy((char *)cmdiocbq->rsp_iocb + offset,
+ (char *)rspiocbq + offset, sizeof(*rspiocbq) - offset);
+
+ /* Set the exchange busy flag for task management commands */
+ if ((cmdiocbq->cmd_flag & LPFC_IO_FCP) &&
+ !(cmdiocbq->cmd_flag & LPFC_IO_LIBDFC)) {
+ lpfc_cmd = container_of(cmdiocbq, struct lpfc_io_buf,
+ cur_iocbq);
+ if (rspiocbq && (rspiocbq->cmd_flag & LPFC_EXCHANGE_BUSY))
+ lpfc_cmd->flags |= LPFC_SBUF_XBUSY;
+ else
+ lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY;
+ }
+
+ pdone_q = cmdiocbq->context_un.wait_queue;
+ if (pdone_q)
+ wake_up(pdone_q);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return;
+}
+
+/**
+ * lpfc_chk_iocb_flg - Test IOCB flag with lock held.
+ * @phba: Pointer to HBA context object..
+ * @piocbq: Pointer to command iocb.
+ * @flag: Flag to test.
+ *
+ * This routine grabs the hbalock and then test the cmd_flag to
+ * see if the passed in flag is set.
+ * Returns:
+ * 1 if flag is set.
+ * 0 if flag is not set.
+ **/
+static int
+lpfc_chk_iocb_flg(struct lpfc_hba *phba,
+ struct lpfc_iocbq *piocbq, uint32_t flag)
+{
+ unsigned long iflags;
+ int ret;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ ret = piocbq->cmd_flag & flag;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return ret;
+
+}
+
+/**
+ * lpfc_sli_issue_iocb_wait - Synchronous function to issue iocb commands
+ * @phba: Pointer to HBA context object..
+ * @ring_number: Ring number
+ * @piocb: Pointer to command iocb.
+ * @prspiocbq: Pointer to response iocb.
+ * @timeout: Timeout in number of seconds.
+ *
+ * This function issues the iocb to firmware and waits for the
+ * iocb to complete. The cmd_cmpl field of the shall be used
+ * to handle iocbs which time out. If the field is NULL, the
+ * function shall free the iocbq structure. If more clean up is
+ * needed, the caller is expected to provide a completion function
+ * that will provide the needed clean up. If the iocb command is
+ * not completed within timeout seconds, the function will either
+ * free the iocbq structure (if cmd_cmpl == NULL) or execute the
+ * completion function set in the cmd_cmpl field and then return
+ * a status of IOCB_TIMEDOUT. The caller should not free the iocb
+ * resources if this function returns IOCB_TIMEDOUT.
+ * The function waits for the iocb completion using an
+ * non-interruptible wait.
+ * This function will sleep while waiting for iocb completion.
+ * So, this function should not be called from any context which
+ * does not allow sleeping. Due to the same reason, this function
+ * cannot be called with interrupt disabled.
+ * This function assumes that the iocb completions occur while
+ * this function sleep. So, this function cannot be called from
+ * the thread which process iocb completion for this ring.
+ * This function clears the cmd_flag of the iocb object before
+ * issuing the iocb and the iocb completion handler sets this
+ * flag and wakes this thread when the iocb completes.
+ * The contents of the response iocb will be copied to prspiocbq
+ * by the completion handler when the command completes.
+ * This function returns IOCB_SUCCESS when success.
+ * This function is called with no lock held.
+ **/
+int
+lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
+ uint32_t ring_number,
+ struct lpfc_iocbq *piocb,
+ struct lpfc_iocbq *prspiocbq,
+ uint32_t timeout)
+{
+ DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
+ long timeleft, timeout_req = 0;
+ int retval = IOCB_SUCCESS;
+ uint32_t creg_val;
+ struct lpfc_iocbq *iocb;
+ int txq_cnt = 0;
+ int txcmplq_cnt = 0;
+ struct lpfc_sli_ring *pring;
+ unsigned long iflags;
+ bool iocb_completed = true;
+
+ if (phba->sli_rev >= LPFC_SLI_REV4) {
+ lpfc_sli_prep_wqe(phba, piocb);
+
+ pring = lpfc_sli4_calc_ring(phba, piocb);
+ } else
+ pring = &phba->sli.sli3_ring[ring_number];
+ /*
+ * If the caller has provided a response iocbq buffer, then rsp_iocb
+ * is NULL or its an error.
+ */
+ if (prspiocbq) {
+ if (piocb->rsp_iocb)
+ return IOCB_ERROR;
+ piocb->rsp_iocb = prspiocbq;
+ }
+
+ piocb->wait_cmd_cmpl = piocb->cmd_cmpl;
+ piocb->cmd_cmpl = lpfc_sli_wake_iocb_wait;
+ piocb->context_un.wait_queue = &done_q;
+ piocb->cmd_flag &= ~(LPFC_IO_WAKE | LPFC_IO_WAKE_TMO);
+
+ if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
+ if (lpfc_readl(phba->HCregaddr, &creg_val))
+ return IOCB_ERROR;
+ creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
+ writel(creg_val, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+ }
+
+ retval = lpfc_sli_issue_iocb(phba, ring_number, piocb,
+ SLI_IOCB_RET_IOCB);
+ if (retval == IOCB_SUCCESS) {
+ timeout_req = msecs_to_jiffies(timeout * 1000);
+ timeleft = wait_event_timeout(done_q,
+ lpfc_chk_iocb_flg(phba, piocb, LPFC_IO_WAKE),
+ timeout_req);
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ if (!(piocb->cmd_flag & LPFC_IO_WAKE)) {
+
+ /*
+ * IOCB timed out. Inform the wake iocb wait
+ * completion function and set local status
+ */
+
+ iocb_completed = false;
+ piocb->cmd_flag |= LPFC_IO_WAKE_TMO;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ if (iocb_completed) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0331 IOCB wake signaled\n");
+ /* Note: we are not indicating if the IOCB has a success
+ * status or not - that's for the caller to check.
+ * IOCB_SUCCESS means just that the command was sent and
+ * completed. Not that it completed successfully.
+ * */
+ } else if (timeleft == 0) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0338 IOCB wait timeout error - no "
+ "wake response Data x%x\n", timeout);
+ retval = IOCB_TIMEDOUT;
+ } else {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0330 IOCB wake NOT set, "
+ "Data x%x x%lx\n",
+ timeout, (timeleft / jiffies));
+ retval = IOCB_TIMEDOUT;
+ }
+ } else if (retval == IOCB_BUSY) {
+ if (phba->cfg_log_verbose & LOG_SLI) {
+ list_for_each_entry(iocb, &pring->txq, list) {
+ txq_cnt++;
+ }
+ list_for_each_entry(iocb, &pring->txcmplq, list) {
+ txcmplq_cnt++;
+ }
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "2818 Max IOCBs %d txq cnt %d txcmplq cnt %d\n",
+ phba->iocb_cnt, txq_cnt, txcmplq_cnt);
+ }
+ return retval;
+ } else {
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0332 IOCB wait issue failed, Data x%x\n",
+ retval);
+ retval = IOCB_ERROR;
+ }
+
+ if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
+ if (lpfc_readl(phba->HCregaddr, &creg_val))
+ return IOCB_ERROR;
+ creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
+ writel(creg_val, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+ }
+
+ if (prspiocbq)
+ piocb->rsp_iocb = NULL;
+
+ piocb->context_un.wait_queue = NULL;
+ piocb->cmd_cmpl = NULL;
+ return retval;
+}
+
+/**
+ * lpfc_sli_issue_mbox_wait - Synchronous function to issue mailbox
+ * @phba: Pointer to HBA context object.
+ * @pmboxq: Pointer to driver mailbox object.
+ * @timeout: Timeout in number of seconds.
+ *
+ * This function issues the mailbox to firmware and waits for the
+ * mailbox command to complete. If the mailbox command is not
+ * completed within timeout seconds, it returns MBX_TIMEOUT.
+ * The function waits for the mailbox completion using an
+ * interruptible wait. If the thread is woken up due to a
+ * signal, MBX_TIMEOUT error is returned to the caller. Caller
+ * should not free the mailbox resources, if this function returns
+ * MBX_TIMEOUT.
+ * This function will sleep while waiting for mailbox completion.
+ * So, this function should not be called from any context which
+ * does not allow sleeping. Due to the same reason, this function
+ * cannot be called with interrupt disabled.
+ * This function assumes that the mailbox completion occurs while
+ * this function sleep. So, this function cannot be called from
+ * the worker thread which processes mailbox completion.
+ * This function is called in the context of HBA management
+ * applications.
+ * This function returns MBX_SUCCESS when successful.
+ * This function is called with no lock held.
+ **/
+int
+lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
+ uint32_t timeout)
+{
+ struct completion mbox_done;
+ int retval;
+ unsigned long flag;
+
+ pmboxq->mbox_flag &= ~LPFC_MBX_WAKE;
+ /* setup wake call as IOCB callback */
+ pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
+
+ /* setup context3 field to pass wait_queue pointer to wake function */
+ init_completion(&mbox_done);
+ pmboxq->context3 = &mbox_done;
+ /* now issue the command */
+ retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
+ if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
+ wait_for_completion_timeout(&mbox_done,
+ msecs_to_jiffies(timeout * 1000));
+
+ spin_lock_irqsave(&phba->hbalock, flag);
+ pmboxq->context3 = NULL;
+ /*
+ * if LPFC_MBX_WAKE flag is set the mailbox is completed
+ * else do not free the resources.
+ */
+ if (pmboxq->mbox_flag & LPFC_MBX_WAKE) {
+ retval = MBX_SUCCESS;
+ } else {
+ retval = MBX_TIMEOUT;
+ pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, flag);
+ }
+ return retval;
+}
+
+/**
+ * lpfc_sli_mbox_sys_shutdown - shutdown mailbox command sub-system
+ * @phba: Pointer to HBA context.
+ * @mbx_action: Mailbox shutdown options.
+ *
+ * This function is called to shutdown the driver's mailbox sub-system.
+ * It first marks the mailbox sub-system is in a block state to prevent
+ * the asynchronous mailbox command from issued off the pending mailbox
+ * command queue. If the mailbox command sub-system shutdown is due to
+ * HBA error conditions such as EEH or ERATT, this routine shall invoke
+ * the mailbox sub-system flush routine to forcefully bring down the
+ * mailbox sub-system. Otherwise, if it is due to normal condition (such
+ * as with offline or HBA function reset), this routine will wait for the
+ * outstanding mailbox command to complete before invoking the mailbox
+ * sub-system flush routine to gracefully bring down mailbox sub-system.
+ **/
+void
+lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba, int mbx_action)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ unsigned long timeout;
+
+ if (mbx_action == LPFC_MBX_NO_WAIT) {
+ /* delay 100ms for port state */
+ msleep(100);
+ lpfc_sli_mbox_sys_flush(phba);
+ return;
+ }
+ timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
+
+ /* Disable softirqs, including timers from obtaining phba->hbalock */
+ local_bh_disable();
+
+ spin_lock_irq(&phba->hbalock);
+ psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
+
+ if (psli->sli_flag & LPFC_SLI_ACTIVE) {
+ /* Determine how long we might wait for the active mailbox
+ * command to be gracefully completed by firmware.
+ */
+ if (phba->sli.mbox_active)
+ timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
+ phba->sli.mbox_active) *
+ 1000) + jiffies;
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Enable softirqs again, done with phba->hbalock */
+ local_bh_enable();
+
+ while (phba->sli.mbox_active) {
+ /* Check active mailbox complete status every 2ms */
+ msleep(2);
+ if (time_after(jiffies, timeout))
+ /* Timeout, let the mailbox flush routine to
+ * forcefully release active mailbox command
+ */
+ break;
+ }
+ } else {
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Enable softirqs again, done with phba->hbalock */
+ local_bh_enable();
+ }
+
+ lpfc_sli_mbox_sys_flush(phba);
+}
+
+/**
+ * lpfc_sli_eratt_read - read sli-3 error attention events
+ * @phba: Pointer to HBA context.
+ *
+ * This function is called to read the SLI3 device error attention registers
+ * for possible error attention events. The caller must hold the hostlock
+ * with spin_lock_irq().
+ *
+ * This function returns 1 when there is Error Attention in the Host Attention
+ * Register and returns 0 otherwise.
+ **/
+static int
+lpfc_sli_eratt_read(struct lpfc_hba *phba)
+{
+ uint32_t ha_copy;
+
+ /* Read chip Host Attention (HA) register */
+ if (lpfc_readl(phba->HAregaddr, &ha_copy))
+ goto unplug_err;
+
+ if (ha_copy & HA_ERATT) {
+ /* Read host status register to retrieve error event */
+ if (lpfc_sli_read_hs(phba))
+ goto unplug_err;
+
+ /* Check if there is a deferred error condition is active */
+ if ((HS_FFER1 & phba->work_hs) &&
+ ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
+ HS_FFER6 | HS_FFER7 | HS_FFER8) & phba->work_hs)) {
+ phba->hba_flag |= DEFER_ERATT;
+ /* Clear all interrupt enable conditions */
+ writel(0, phba->HCregaddr);
+ readl(phba->HCregaddr);
+ }
+
+ /* Set the driver HA work bitmap */
+ phba->work_ha |= HA_ERATT;
+ /* Indicate polling handles this ERATT */
+ phba->hba_flag |= HBA_ERATT_HANDLED;
+ return 1;
+ }
+ return 0;
+
+unplug_err:
+ /* Set the driver HS work bitmap */
+ phba->work_hs |= UNPLUG_ERR;
+ /* Set the driver HA work bitmap */
+ phba->work_ha |= HA_ERATT;
+ /* Indicate polling handles this ERATT */
+ phba->hba_flag |= HBA_ERATT_HANDLED;
+ return 1;
+}
+
+/**
+ * lpfc_sli4_eratt_read - read sli-4 error attention events
+ * @phba: Pointer to HBA context.
+ *
+ * This function is called to read the SLI4 device error attention registers
+ * for possible error attention events. The caller must hold the hostlock
+ * with spin_lock_irq().
+ *
+ * This function returns 1 when there is Error Attention in the Host Attention
+ * Register and returns 0 otherwise.
+ **/
+static int
+lpfc_sli4_eratt_read(struct lpfc_hba *phba)
+{
+ uint32_t uerr_sta_hi, uerr_sta_lo;
+ uint32_t if_type, portsmphr;
+ struct lpfc_register portstat_reg;
+ u32 logmask;
+
+ /*
+ * For now, use the SLI4 device internal unrecoverable error
+ * registers for error attention. This can be changed later.
+ */
+ if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
+ switch (if_type) {
+ case LPFC_SLI_INTF_IF_TYPE_0:
+ if (lpfc_readl(phba->sli4_hba.u.if_type0.UERRLOregaddr,
+ &uerr_sta_lo) ||
+ lpfc_readl(phba->sli4_hba.u.if_type0.UERRHIregaddr,
+ &uerr_sta_hi)) {
+ phba->work_hs |= UNPLUG_ERR;
+ phba->work_ha |= HA_ERATT;
+ phba->hba_flag |= HBA_ERATT_HANDLED;
+ return 1;
+ }
+ if ((~phba->sli4_hba.ue_mask_lo & uerr_sta_lo) ||
+ (~phba->sli4_hba.ue_mask_hi & uerr_sta_hi)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "1423 HBA Unrecoverable error: "
+ "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, "
+ "ue_mask_lo_reg=0x%x, "
+ "ue_mask_hi_reg=0x%x\n",
+ uerr_sta_lo, uerr_sta_hi,
+ phba->sli4_hba.ue_mask_lo,
+ phba->sli4_hba.ue_mask_hi);
+ phba->work_status[0] = uerr_sta_lo;
+ phba->work_status[1] = uerr_sta_hi;
+ phba->work_ha |= HA_ERATT;
+ phba->hba_flag |= HBA_ERATT_HANDLED;
+ return 1;
+ }
+ break;
+ case LPFC_SLI_INTF_IF_TYPE_2:
+ case LPFC_SLI_INTF_IF_TYPE_6:
+ if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
+ &portstat_reg.word0) ||
+ lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
+ &portsmphr)){
+ phba->work_hs |= UNPLUG_ERR;
+ phba->work_ha |= HA_ERATT;
+ phba->hba_flag |= HBA_ERATT_HANDLED;
+ return 1;
+ }
+ if (bf_get(lpfc_sliport_status_err, &portstat_reg)) {
+ phba->work_status[0] =
+ readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
+ phba->work_status[1] =
+ readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
+ logmask = LOG_TRACE_EVENT;
+ if (phba->work_status[0] ==
+ SLIPORT_ERR1_REG_ERR_CODE_2 &&
+ phba->work_status[1] == SLIPORT_ERR2_REG_FW_RESTART)
+ logmask = LOG_SLI;
+ lpfc_printf_log(phba, KERN_ERR, logmask,
+ "2885 Port Status Event: "
+ "port status reg 0x%x, "
+ "port smphr reg 0x%x, "
+ "error 1=0x%x, error 2=0x%x\n",
+ portstat_reg.word0,
+ portsmphr,
+ phba->work_status[0],
+ phba->work_status[1]);
+ phba->work_ha |= HA_ERATT;
+ phba->hba_flag |= HBA_ERATT_HANDLED;
+ return 1;
+ }
+ break;
+ case LPFC_SLI_INTF_IF_TYPE_1:
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2886 HBA Error Attention on unsupported "
+ "if type %d.", if_type);
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * lpfc_sli_check_eratt - check error attention events
+ * @phba: Pointer to HBA context.
+ *
+ * This function is called from timer soft interrupt context to check HBA's
+ * error attention register bit for error attention events.
+ *
+ * This function returns 1 when there is Error Attention in the Host Attention
+ * Register and returns 0 otherwise.
+ **/
+int
+lpfc_sli_check_eratt(struct lpfc_hba *phba)
+{
+ uint32_t ha_copy;
+
+ /* If somebody is waiting to handle an eratt, don't process it
+ * here. The brdkill function will do this.
+ */
+ if (phba->link_flag & LS_IGNORE_ERATT)
+ return 0;
+
+ /* Check if interrupt handler handles this ERATT */
+ spin_lock_irq(&phba->hbalock);
+ if (phba->hba_flag & HBA_ERATT_HANDLED) {
+ /* Interrupt handler has handled ERATT */
+ spin_unlock_irq(&phba->hbalock);
+ return 0;
+ }
+
+ /*
+ * If there is deferred error attention, do not check for error
+ * attention
+ */
+ if (unlikely(phba->hba_flag & DEFER_ERATT)) {
+ spin_unlock_irq(&phba->hbalock);
+ return 0;
+ }
+
+ /* If PCI channel is offline, don't process it */
+ if (unlikely(pci_channel_offline(phba->pcidev))) {
+ spin_unlock_irq(&phba->hbalock);
+ return 0;
+ }
+
+ switch (phba->sli_rev) {
+ case LPFC_SLI_REV2:
+ case LPFC_SLI_REV3:
+ /* Read chip Host Attention (HA) register */
+ ha_copy = lpfc_sli_eratt_read(phba);
+ break;
+ case LPFC_SLI_REV4:
+ /* Read device Uncoverable Error (UERR) registers */
+ ha_copy = lpfc_sli4_eratt_read(phba);
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0299 Invalid SLI revision (%d)\n",
+ phba->sli_rev);
+ ha_copy = 0;
+ break;
+ }
+ spin_unlock_irq(&phba->hbalock);
+
+ return ha_copy;
+}
+
+/**
+ * lpfc_intr_state_check - Check device state for interrupt handling
+ * @phba: Pointer to HBA context.
+ *
+ * This inline routine checks whether a device or its PCI slot is in a state
+ * that the interrupt should be handled.
+ *
+ * This function returns 0 if the device or the PCI slot is in a state that
+ * interrupt should be handled, otherwise -EIO.
+ */
+static inline int
+lpfc_intr_state_check(struct lpfc_hba *phba)
+{
+ /* If the pci channel is offline, ignore all the interrupts */
+ if (unlikely(pci_channel_offline(phba->pcidev)))
+ return -EIO;
+
+ /* Update device level interrupt statistics */
+ phba->sli.slistat.sli_intr++;
+
+ /* Ignore all interrupts during initialization. */
+ if (unlikely(phba->link_state < LPFC_LINK_DOWN))
+ return -EIO;
+
+ return 0;
+}
+
+/**
+ * lpfc_sli_sp_intr_handler - Slow-path interrupt handler to SLI-3 device
+ * @irq: Interrupt number.
+ * @dev_id: The device context pointer.
+ *
+ * This function is directly called from the PCI layer as an interrupt
+ * service routine when device with SLI-3 interface spec is enabled with
+ * MSI-X multi-message interrupt mode and there are slow-path events in
+ * the HBA. However, when the device is enabled with either MSI or Pin-IRQ
+ * interrupt mode, this function is called as part of the device-level
+ * interrupt handler. When the PCI slot is in error recovery or the HBA
+ * is undergoing initialization, the interrupt handler will not process
+ * the interrupt. The link attention and ELS ring attention events are
+ * handled by the worker thread. The interrupt handler signals the worker
+ * thread and returns for these events. This function is called without
+ * any lock held. It gets the hbalock to access and update SLI data
+ * structures.
+ *
+ * This function returns IRQ_HANDLED when interrupt is handled else it
+ * returns IRQ_NONE.
+ **/
+irqreturn_t
+lpfc_sli_sp_intr_handler(int irq, void *dev_id)
+{
+ struct lpfc_hba *phba;
+ uint32_t ha_copy, hc_copy;
+ uint32_t work_ha_copy;
+ unsigned long status;
+ unsigned long iflag;
+ uint32_t control;
+
+ MAILBOX_t *mbox, *pmbox;
+ struct lpfc_vport *vport;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_dmabuf *mp;
+ LPFC_MBOXQ_t *pmb;
+ int rc;
+
+ /*
+ * Get the driver's phba structure from the dev_id and
+ * assume the HBA is not interrupting.
+ */
+ phba = (struct lpfc_hba *)dev_id;
+
+ if (unlikely(!phba))
+ return IRQ_NONE;
+
+ /*
+ * Stuff needs to be attented to when this function is invoked as an
+ * individual interrupt handler in MSI-X multi-message interrupt mode
+ */
+ if (phba->intr_type == MSIX) {
+ /* Check device state for handling interrupt */
+ if (lpfc_intr_state_check(phba))
+ return IRQ_NONE;
+ /* Need to read HA REG for slow-path events */
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ if (lpfc_readl(phba->HAregaddr, &ha_copy))
+ goto unplug_error;
+ /* If somebody is waiting to handle an eratt don't process it
+ * here. The brdkill function will do this.
+ */
+ if (phba->link_flag & LS_IGNORE_ERATT)
+ ha_copy &= ~HA_ERATT;
+ /* Check the need for handling ERATT in interrupt handler */
+ if (ha_copy & HA_ERATT) {
+ if (phba->hba_flag & HBA_ERATT_HANDLED)
+ /* ERATT polling has handled ERATT */
+ ha_copy &= ~HA_ERATT;
+ else
+ /* Indicate interrupt handler handles ERATT */
+ phba->hba_flag |= HBA_ERATT_HANDLED;
+ }
+
+ /*
+ * If there is deferred error attention, do not check for any
+ * interrupt.
+ */
+ if (unlikely(phba->hba_flag & DEFER_ERATT)) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return IRQ_NONE;
+ }
+
+ /* Clear up only attention source related to slow-path */
+ if (lpfc_readl(phba->HCregaddr, &hc_copy))
+ goto unplug_error;
+
+ writel(hc_copy & ~(HC_MBINT_ENA | HC_R2INT_ENA |
+ HC_LAINT_ENA | HC_ERINT_ENA),
+ phba->HCregaddr);
+ writel((ha_copy & (HA_MBATT | HA_R2_CLR_MSK)),
+ phba->HAregaddr);
+ writel(hc_copy, phba->HCregaddr);
+ readl(phba->HAregaddr); /* flush */
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ } else
+ ha_copy = phba->ha_copy;
+
+ work_ha_copy = ha_copy & phba->work_ha_mask;
+
+ if (work_ha_copy) {
+ if (work_ha_copy & HA_LATT) {
+ if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
+ /*
+ * Turn off Link Attention interrupts
+ * until CLEAR_LA done
+ */
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
+ if (lpfc_readl(phba->HCregaddr, &control))
+ goto unplug_error;
+ control &= ~HC_LAINT_ENA;
+ writel(control, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ }
+ else
+ work_ha_copy &= ~HA_LATT;
+ }
+
+ if (work_ha_copy & ~(HA_ERATT | HA_MBATT | HA_LATT)) {
+ /*
+ * Turn off Slow Rings interrupts, LPFC_ELS_RING is
+ * the only slow ring.
+ */
+ status = (work_ha_copy &
+ (HA_RXMASK << (4*LPFC_ELS_RING)));
+ status >>= (4*LPFC_ELS_RING);
+ if (status & HA_RXMASK) {
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ if (lpfc_readl(phba->HCregaddr, &control))
+ goto unplug_error;
+
+ lpfc_debugfs_slow_ring_trc(phba,
+ "ISR slow ring: ctl:x%x stat:x%x isrcnt:x%x",
+ control, status,
+ (uint32_t)phba->sli.slistat.sli_intr);
+
+ if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
+ lpfc_debugfs_slow_ring_trc(phba,
+ "ISR Disable ring:"
+ "pwork:x%x hawork:x%x wait:x%x",
+ phba->work_ha, work_ha_copy,
+ (uint32_t)((unsigned long)
+ &phba->work_waitq));
+
+ control &=
+ ~(HC_R0INT_ENA << LPFC_ELS_RING);
+ writel(control, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+ }
+ else {
+ lpfc_debugfs_slow_ring_trc(phba,
+ "ISR slow ring: pwork:"
+ "x%x hawork:x%x wait:x%x",
+ phba->work_ha, work_ha_copy,
+ (uint32_t)((unsigned long)
+ &phba->work_waitq));
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ }
+ }
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ if (work_ha_copy & HA_ERATT) {
+ if (lpfc_sli_read_hs(phba))
+ goto unplug_error;
+ /*
+ * Check if there is a deferred error condition
+ * is active
+ */
+ if ((HS_FFER1 & phba->work_hs) &&
+ ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
+ HS_FFER6 | HS_FFER7 | HS_FFER8) &
+ phba->work_hs)) {
+ phba->hba_flag |= DEFER_ERATT;
+ /* Clear all interrupt enable conditions */
+ writel(0, phba->HCregaddr);
+ readl(phba->HCregaddr);
+ }
+ }
+
+ if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active)) {
+ pmb = phba->sli.mbox_active;
+ pmbox = &pmb->u.mb;
+ mbox = phba->mbox;
+ vport = pmb->vport;
+
+ /* First check out the status word */
+ lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t));
+ if (pmbox->mbxOwner != OWN_HOST) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ /*
+ * Stray Mailbox Interrupt, mbxCommand <cmd>
+ * mbxStatus <status>
+ */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "(%d):0304 Stray Mailbox "
+ "Interrupt mbxCommand x%x "
+ "mbxStatus x%x\n",
+ (vport ? vport->vpi : 0),
+ pmbox->mbxCommand,
+ pmbox->mbxStatus);
+ /* clear mailbox attention bit */
+ work_ha_copy &= ~HA_MBATT;
+ } else {
+ phba->sli.mbox_active = NULL;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ phba->last_completion_time = jiffies;
+ del_timer(&phba->sli.mbox_tmo);
+ if (pmb->mbox_cmpl) {
+ lpfc_sli_pcimem_bcopy(mbox, pmbox,
+ MAILBOX_CMD_SIZE);
+ if (pmb->out_ext_byte_len &&
+ pmb->ctx_buf)
+ lpfc_sli_pcimem_bcopy(
+ phba->mbox_ext,
+ pmb->ctx_buf,
+ pmb->out_ext_byte_len);
+ }
+ if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
+ pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
+
+ lpfc_debugfs_disc_trc(vport,
+ LPFC_DISC_TRC_MBOX_VPORT,
+ "MBOX dflt rpi: : "
+ "status:x%x rpi:x%x",
+ (uint32_t)pmbox->mbxStatus,
+ pmbox->un.varWords[0], 0);
+
+ if (!pmbox->mbxStatus) {
+ mp = (struct lpfc_dmabuf *)
+ (pmb->ctx_buf);
+ ndlp = (struct lpfc_nodelist *)
+ pmb->ctx_ndlp;
+
+ /* Reg_LOGIN of dflt RPI was
+ * successful. new lets get
+ * rid of the RPI using the
+ * same mbox buffer.
+ */
+ lpfc_unreg_login(phba,
+ vport->vpi,
+ pmbox->un.varWords[0],
+ pmb);
+ pmb->mbox_cmpl =
+ lpfc_mbx_cmpl_dflt_rpi;
+ pmb->ctx_buf = mp;
+ pmb->ctx_ndlp = ndlp;
+ pmb->vport = vport;
+ rc = lpfc_sli_issue_mbox(phba,
+ pmb,
+ MBX_NOWAIT);
+ if (rc != MBX_BUSY)
+ lpfc_printf_log(phba,
+ KERN_ERR,
+ LOG_TRACE_EVENT,
+ "0350 rc should have"
+ "been MBX_BUSY\n");
+ if (rc != MBX_NOT_FINISHED)
+ goto send_current_mbox;
+ }
+ }
+ spin_lock_irqsave(
+ &phba->pport->work_port_lock,
+ iflag);
+ phba->pport->work_port_events &=
+ ~WORKER_MBOX_TMO;
+ spin_unlock_irqrestore(
+ &phba->pport->work_port_lock,
+ iflag);
+
+ /* Do NOT queue MBX_HEARTBEAT to the worker
+ * thread for processing.
+ */
+ if (pmbox->mbxCommand == MBX_HEARTBEAT) {
+ /* Process mbox now */
+ phba->sli.mbox_active = NULL;
+ phba->sli.sli_flag &=
+ ~LPFC_SLI_MBOX_ACTIVE;
+ if (pmb->mbox_cmpl)
+ pmb->mbox_cmpl(phba, pmb);
+ } else {
+ /* Queue to worker thread to process */
+ lpfc_mbox_cmpl_put(phba, pmb);
+ }
+ }
+ } else
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+
+ if ((work_ha_copy & HA_MBATT) &&
+ (phba->sli.mbox_active == NULL)) {
+send_current_mbox:
+ /* Process next mailbox command if there is one */
+ do {
+ rc = lpfc_sli_issue_mbox(phba, NULL,
+ MBX_NOWAIT);
+ } while (rc == MBX_NOT_FINISHED);
+ if (rc != MBX_SUCCESS)
+ lpfc_printf_log(phba, KERN_ERR,
+ LOG_TRACE_EVENT,
+ "0349 rc should be "
+ "MBX_SUCCESS\n");
+ }
+
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ phba->work_ha |= work_ha_copy;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ lpfc_worker_wake_up(phba);
+ }
+ return IRQ_HANDLED;
+unplug_error:
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return IRQ_HANDLED;
+
+} /* lpfc_sli_sp_intr_handler */
+
+/**
+ * lpfc_sli_fp_intr_handler - Fast-path interrupt handler to SLI-3 device.
+ * @irq: Interrupt number.
+ * @dev_id: The device context pointer.
+ *
+ * This function is directly called from the PCI layer as an interrupt
+ * service routine when device with SLI-3 interface spec is enabled with
+ * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
+ * ring event in the HBA. However, when the device is enabled with either
+ * MSI or Pin-IRQ interrupt mode, this function is called as part of the
+ * device-level interrupt handler. When the PCI slot is in error recovery
+ * or the HBA is undergoing initialization, the interrupt handler will not
+ * process the interrupt. The SCSI FCP fast-path ring event are handled in
+ * the intrrupt context. This function is called without any lock held.
+ * It gets the hbalock to access and update SLI data structures.
+ *
+ * This function returns IRQ_HANDLED when interrupt is handled else it
+ * returns IRQ_NONE.
+ **/
+irqreturn_t
+lpfc_sli_fp_intr_handler(int irq, void *dev_id)
+{
+ struct lpfc_hba *phba;
+ uint32_t ha_copy;
+ unsigned long status;
+ unsigned long iflag;
+ struct lpfc_sli_ring *pring;
+
+ /* Get the driver's phba structure from the dev_id and
+ * assume the HBA is not interrupting.
+ */
+ phba = (struct lpfc_hba *) dev_id;
+
+ if (unlikely(!phba))
+ return IRQ_NONE;
+
+ /*
+ * Stuff needs to be attented to when this function is invoked as an
+ * individual interrupt handler in MSI-X multi-message interrupt mode
+ */
+ if (phba->intr_type == MSIX) {
+ /* Check device state for handling interrupt */
+ if (lpfc_intr_state_check(phba))
+ return IRQ_NONE;
+ /* Need to read HA REG for FCP ring and other ring events */
+ if (lpfc_readl(phba->HAregaddr, &ha_copy))
+ return IRQ_HANDLED;
+ /* Clear up only attention source related to fast-path */
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ /*
+ * If there is deferred error attention, do not check for
+ * any interrupt.
+ */
+ if (unlikely(phba->hba_flag & DEFER_ERATT)) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return IRQ_NONE;
+ }
+ writel((ha_copy & (HA_R0_CLR_MSK | HA_R1_CLR_MSK)),
+ phba->HAregaddr);
+ readl(phba->HAregaddr); /* flush */
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ } else
+ ha_copy = phba->ha_copy;
+
+ /*
+ * Process all events on FCP ring. Take the optimized path for FCP IO.
+ */
+ ha_copy &= ~(phba->work_ha_mask);
+
+ status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
+ status >>= (4*LPFC_FCP_RING);
+ pring = &phba->sli.sli3_ring[LPFC_FCP_RING];
+ if (status & HA_RXMASK)
+ lpfc_sli_handle_fast_ring_event(phba, pring, status);
+
+ if (phba->cfg_multi_ring_support == 2) {
+ /*
+ * Process all events on extra ring. Take the optimized path
+ * for extra ring IO.
+ */
+ status = (ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
+ status >>= (4*LPFC_EXTRA_RING);
+ if (status & HA_RXMASK) {
+ lpfc_sli_handle_fast_ring_event(phba,
+ &phba->sli.sli3_ring[LPFC_EXTRA_RING],
+ status);
+ }
+ }
+ return IRQ_HANDLED;
+} /* lpfc_sli_fp_intr_handler */
+
+/**
+ * lpfc_sli_intr_handler - Device-level interrupt handler to SLI-3 device
+ * @irq: Interrupt number.
+ * @dev_id: The device context pointer.
+ *
+ * This function is the HBA device-level interrupt handler to device with
+ * SLI-3 interface spec, called from the PCI layer when either MSI or
+ * Pin-IRQ interrupt mode is enabled and there is an event in the HBA which
+ * requires driver attention. This function invokes the slow-path interrupt
+ * attention handling function and fast-path interrupt attention handling
+ * function in turn to process the relevant HBA attention events. This
+ * function is called without any lock held. It gets the hbalock to access
+ * and update SLI data structures.
+ *
+ * This function returns IRQ_HANDLED when interrupt is handled, else it
+ * returns IRQ_NONE.
+ **/
+irqreturn_t
+lpfc_sli_intr_handler(int irq, void *dev_id)
+{
+ struct lpfc_hba *phba;
+ irqreturn_t sp_irq_rc, fp_irq_rc;
+ unsigned long status1, status2;
+ uint32_t hc_copy;
+
+ /*
+ * Get the driver's phba structure from the dev_id and
+ * assume the HBA is not interrupting.
+ */
+ phba = (struct lpfc_hba *) dev_id;
+
+ if (unlikely(!phba))
+ return IRQ_NONE;
+
+ /* Check device state for handling interrupt */
+ if (lpfc_intr_state_check(phba))
+ return IRQ_NONE;
+
+ spin_lock(&phba->hbalock);
+ if (lpfc_readl(phba->HAregaddr, &phba->ha_copy)) {
+ spin_unlock(&phba->hbalock);
+ return IRQ_HANDLED;
+ }
+
+ if (unlikely(!phba->ha_copy)) {
+ spin_unlock(&phba->hbalock);
+ return IRQ_NONE;
+ } else if (phba->ha_copy & HA_ERATT) {
+ if (phba->hba_flag & HBA_ERATT_HANDLED)
+ /* ERATT polling has handled ERATT */
+ phba->ha_copy &= ~HA_ERATT;
+ else
+ /* Indicate interrupt handler handles ERATT */
+ phba->hba_flag |= HBA_ERATT_HANDLED;
+ }
+
+ /*
+ * If there is deferred error attention, do not check for any interrupt.
+ */
+ if (unlikely(phba->hba_flag & DEFER_ERATT)) {
+ spin_unlock(&phba->hbalock);
+ return IRQ_NONE;
+ }
+
+ /* Clear attention sources except link and error attentions */
+ if (lpfc_readl(phba->HCregaddr, &hc_copy)) {
+ spin_unlock(&phba->hbalock);
+ return IRQ_HANDLED;
+ }
+ writel(hc_copy & ~(HC_MBINT_ENA | HC_R0INT_ENA | HC_R1INT_ENA
+ | HC_R2INT_ENA | HC_LAINT_ENA | HC_ERINT_ENA),
+ phba->HCregaddr);
+ writel((phba->ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
+ writel(hc_copy, phba->HCregaddr);
+ readl(phba->HAregaddr); /* flush */
+ spin_unlock(&phba->hbalock);
+
+ /*
+ * Invokes slow-path host attention interrupt handling as appropriate.
+ */
+
+ /* status of events with mailbox and link attention */
+ status1 = phba->ha_copy & (HA_MBATT | HA_LATT | HA_ERATT);
+
+ /* status of events with ELS ring */
+ status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
+ status2 >>= (4*LPFC_ELS_RING);
+
+ if (status1 || (status2 & HA_RXMASK))
+ sp_irq_rc = lpfc_sli_sp_intr_handler(irq, dev_id);
+ else
+ sp_irq_rc = IRQ_NONE;
+
+ /*
+ * Invoke fast-path host attention interrupt handling as appropriate.
+ */
+
+ /* status of events with FCP ring */
+ status1 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
+ status1 >>= (4*LPFC_FCP_RING);
+
+ /* status of events with extra ring */
+ if (phba->cfg_multi_ring_support == 2) {
+ status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
+ status2 >>= (4*LPFC_EXTRA_RING);
+ } else
+ status2 = 0;
+
+ if ((status1 & HA_RXMASK) || (status2 & HA_RXMASK))
+ fp_irq_rc = lpfc_sli_fp_intr_handler(irq, dev_id);
+ else
+ fp_irq_rc = IRQ_NONE;
+
+ /* Return device-level interrupt handling status */
+ return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc;
+} /* lpfc_sli_intr_handler */
+
+/**
+ * lpfc_sli4_els_xri_abort_event_proc - Process els xri abort event
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked by the worker thread to process all the pending
+ * SLI4 els abort xri events.
+ **/
+void lpfc_sli4_els_xri_abort_event_proc(struct lpfc_hba *phba)
+{
+ struct lpfc_cq_event *cq_event;
+ unsigned long iflags;
+
+ /* First, declare the els xri abort event has been handled */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ phba->hba_flag &= ~ELS_XRI_ABORT_EVENT;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ /* Now, handle all the els xri abort events */
+ spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
+ while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) {
+ /* Get the first event from the head of the event queue */
+ list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
+ cq_event, struct lpfc_cq_event, list);
+ spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock,
+ iflags);
+ /* Notify aborted XRI for ELS work queue */
+ lpfc_sli4_els_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
+
+ /* Free the event processed back to the free pool */
+ lpfc_sli4_cq_event_release(phba, cq_event);
+ spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock,
+ iflags);
+ }
+ spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
+}
+
+/**
+ * lpfc_sli4_els_preprocess_rspiocbq - Get response iocbq from els wcqe
+ * @phba: Pointer to HBA context object.
+ * @irspiocbq: Pointer to work-queue completion queue entry.
+ *
+ * This routine handles an ELS work-queue completion event and construct
+ * a pseudo response ELS IOCBQ from the SLI4 ELS WCQE for the common
+ * discovery engine to handle.
+ *
+ * Return: Pointer to the receive IOCBQ, NULL otherwise.
+ **/
+static struct lpfc_iocbq *
+lpfc_sli4_els_preprocess_rspiocbq(struct lpfc_hba *phba,
+ struct lpfc_iocbq *irspiocbq)
+{
+ struct lpfc_sli_ring *pring;
+ struct lpfc_iocbq *cmdiocbq;
+ struct lpfc_wcqe_complete *wcqe;
+ unsigned long iflags;
+
+ pring = lpfc_phba_elsring(phba);
+ if (unlikely(!pring))
+ return NULL;
+
+ wcqe = &irspiocbq->cq_event.cqe.wcqe_cmpl;
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ pring->stats.iocb_event++;
+ /* Look up the ELS command IOCB and create pseudo response IOCB */
+ cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
+ bf_get(lpfc_wcqe_c_request_tag, wcqe));
+ if (unlikely(!cmdiocbq)) {
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0386 ELS complete with no corresponding "
+ "cmdiocb: 0x%x 0x%x 0x%x 0x%x\n",
+ wcqe->word0, wcqe->total_data_placed,
+ wcqe->parameter, wcqe->word3);
+ lpfc_sli_release_iocbq(phba, irspiocbq);
+ return NULL;
+ }
+
+ memcpy(&irspiocbq->wqe, &cmdiocbq->wqe, sizeof(union lpfc_wqe128));
+ memcpy(&irspiocbq->wcqe_cmpl, wcqe, sizeof(*wcqe));
+
+ /* Put the iocb back on the txcmplq */
+ lpfc_sli_ringtxcmpl_put(phba, pring, cmdiocbq);
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+
+ if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ irspiocbq->cmd_flag |= LPFC_EXCHANGE_BUSY;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ }
+
+ return irspiocbq;
+}
+
+inline struct lpfc_cq_event *
+lpfc_cq_event_setup(struct lpfc_hba *phba, void *entry, int size)
+{
+ struct lpfc_cq_event *cq_event;
+
+ /* Allocate a new internal CQ_EVENT entry */
+ cq_event = lpfc_sli4_cq_event_alloc(phba);
+ if (!cq_event) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0602 Failed to alloc CQ_EVENT entry\n");
+ return NULL;
+ }
+
+ /* Move the CQE into the event */
+ memcpy(&cq_event->cqe, entry, size);
+ return cq_event;
+}
+
+/**
+ * lpfc_sli4_sp_handle_async_event - Handle an asynchronous event
+ * @phba: Pointer to HBA context object.
+ * @mcqe: Pointer to mailbox completion queue entry.
+ *
+ * This routine process a mailbox completion queue entry with asynchronous
+ * event.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_async_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
+{
+ struct lpfc_cq_event *cq_event;
+ unsigned long iflags;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0392 Async Event: word0:x%x, word1:x%x, "
+ "word2:x%x, word3:x%x\n", mcqe->word0,
+ mcqe->mcqe_tag0, mcqe->mcqe_tag1, mcqe->trailer);
+
+ cq_event = lpfc_cq_event_setup(phba, mcqe, sizeof(struct lpfc_mcqe));
+ if (!cq_event)
+ return false;
+
+ spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
+ list_add_tail(&cq_event->list, &phba->sli4_hba.sp_asynce_work_queue);
+ spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
+
+ /* Set the async event flag */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ phba->hba_flag |= ASYNC_EVENT;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ return true;
+}
+
+/**
+ * lpfc_sli4_sp_handle_mbox_event - Handle a mailbox completion event
+ * @phba: Pointer to HBA context object.
+ * @mcqe: Pointer to mailbox completion queue entry.
+ *
+ * This routine process a mailbox completion queue entry with mailbox
+ * completion event.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_mbox_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
+{
+ uint32_t mcqe_status;
+ MAILBOX_t *mbox, *pmbox;
+ struct lpfc_mqe *mqe;
+ struct lpfc_vport *vport;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_dmabuf *mp;
+ unsigned long iflags;
+ LPFC_MBOXQ_t *pmb;
+ bool workposted = false;
+ int rc;
+
+ /* If not a mailbox complete MCQE, out by checking mailbox consume */
+ if (!bf_get(lpfc_trailer_completed, mcqe))
+ goto out_no_mqe_complete;
+
+ /* Get the reference to the active mbox command */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ pmb = phba->sli.mbox_active;
+ if (unlikely(!pmb)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "1832 No pending MBOX command to handle\n");
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ goto out_no_mqe_complete;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ mqe = &pmb->u.mqe;
+ pmbox = (MAILBOX_t *)&pmb->u.mqe;
+ mbox = phba->mbox;
+ vport = pmb->vport;
+
+ /* Reset heartbeat timer */
+ phba->last_completion_time = jiffies;
+ del_timer(&phba->sli.mbox_tmo);
+
+ /* Move mbox data to caller's mailbox region, do endian swapping */
+ if (pmb->mbox_cmpl && mbox)
+ lpfc_sli4_pcimem_bcopy(mbox, mqe, sizeof(struct lpfc_mqe));
+
+ /*
+ * For mcqe errors, conditionally move a modified error code to
+ * the mbox so that the error will not be missed.
+ */
+ mcqe_status = bf_get(lpfc_mcqe_status, mcqe);
+ if (mcqe_status != MB_CQE_STATUS_SUCCESS) {
+ if (bf_get(lpfc_mqe_status, mqe) == MBX_SUCCESS)
+ bf_set(lpfc_mqe_status, mqe,
+ (LPFC_MBX_ERROR_RANGE | mcqe_status));
+ }
+ if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
+ pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_MBOX_VPORT,
+ "MBOX dflt rpi: status:x%x rpi:x%x",
+ mcqe_status,
+ pmbox->un.varWords[0], 0);
+ if (mcqe_status == MB_CQE_STATUS_SUCCESS) {
+ mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
+ ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
+
+ /* Reg_LOGIN of dflt RPI was successful. Mark the
+ * node as having an UNREG_LOGIN in progress to stop
+ * an unsolicited PLOGI from the same NPortId from
+ * starting another mailbox transaction.
+ */
+ spin_lock_irqsave(&ndlp->lock, iflags);
+ ndlp->nlp_flag |= NLP_UNREG_INP;
+ spin_unlock_irqrestore(&ndlp->lock, iflags);
+ lpfc_unreg_login(phba, vport->vpi,
+ pmbox->un.varWords[0], pmb);
+ pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
+ pmb->ctx_buf = mp;
+
+ /* No reference taken here. This is a default
+ * RPI reg/immediate unreg cycle. The reference was
+ * taken in the reg rpi path and is released when
+ * this mailbox completes.
+ */
+ pmb->ctx_ndlp = ndlp;
+ pmb->vport = vport;
+ rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+ if (rc != MBX_BUSY)
+ lpfc_printf_log(phba, KERN_ERR,
+ LOG_TRACE_EVENT,
+ "0385 rc should "
+ "have been MBX_BUSY\n");
+ if (rc != MBX_NOT_FINISHED)
+ goto send_current_mbox;
+ }
+ }
+ spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
+ phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
+ spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
+
+ /* Do NOT queue MBX_HEARTBEAT to the worker thread for processing. */
+ if (pmbox->mbxCommand == MBX_HEARTBEAT) {
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ /* Release the mailbox command posting token */
+ phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ phba->sli.mbox_active = NULL;
+ if (bf_get(lpfc_trailer_consumed, mcqe))
+ lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ /* Post the next mbox command, if there is one */
+ lpfc_sli4_post_async_mbox(phba);
+
+ /* Process cmpl now */
+ if (pmb->mbox_cmpl)
+ pmb->mbox_cmpl(phba, pmb);
+ return false;
+ }
+
+ /* There is mailbox completion work to queue to the worker thread */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ __lpfc_mbox_cmpl_put(phba, pmb);
+ phba->work_ha |= HA_MBATT;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ workposted = true;
+
+send_current_mbox:
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ /* Release the mailbox command posting token */
+ phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+ /* Setting active mailbox pointer need to be in sync to flag clear */
+ phba->sli.mbox_active = NULL;
+ if (bf_get(lpfc_trailer_consumed, mcqe))
+ lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ /* Wake up worker thread to post the next pending mailbox command */
+ lpfc_worker_wake_up(phba);
+ return workposted;
+
+out_no_mqe_complete:
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ if (bf_get(lpfc_trailer_consumed, mcqe))
+ lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return false;
+}
+
+/**
+ * lpfc_sli4_sp_handle_mcqe - Process a mailbox completion queue entry
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to associated CQ
+ * @cqe: Pointer to mailbox completion queue entry.
+ *
+ * This routine process a mailbox completion queue entry, it invokes the
+ * proper mailbox complete handling or asynchronous event handling routine
+ * according to the MCQE's async bit.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_mcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ struct lpfc_cqe *cqe)
+{
+ struct lpfc_mcqe mcqe;
+ bool workposted;
+
+ cq->CQ_mbox++;
+
+ /* Copy the mailbox MCQE and convert endian order as needed */
+ lpfc_sli4_pcimem_bcopy(cqe, &mcqe, sizeof(struct lpfc_mcqe));
+
+ /* Invoke the proper event handling routine */
+ if (!bf_get(lpfc_trailer_async, &mcqe))
+ workposted = lpfc_sli4_sp_handle_mbox_event(phba, &mcqe);
+ else
+ workposted = lpfc_sli4_sp_handle_async_event(phba, &mcqe);
+ return workposted;
+}
+
+/**
+ * lpfc_sli4_sp_handle_els_wcqe - Handle els work-queue completion event
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to associated CQ
+ * @wcqe: Pointer to work-queue completion queue entry.
+ *
+ * This routine handles an ELS work-queue completion event.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_els_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ struct lpfc_wcqe_complete *wcqe)
+{
+ struct lpfc_iocbq *irspiocbq;
+ unsigned long iflags;
+ struct lpfc_sli_ring *pring = cq->pring;
+ int txq_cnt = 0;
+ int txcmplq_cnt = 0;
+
+ /* Check for response status */
+ if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) {
+ /* Log the error status */
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0357 ELS CQE error: status=x%x: "
+ "CQE: %08x %08x %08x %08x\n",
+ bf_get(lpfc_wcqe_c_status, wcqe),
+ wcqe->word0, wcqe->total_data_placed,
+ wcqe->parameter, wcqe->word3);
+ }
+
+ /* Get an irspiocbq for later ELS response processing use */
+ irspiocbq = lpfc_sli_get_iocbq(phba);
+ if (!irspiocbq) {
+ if (!list_empty(&pring->txq))
+ txq_cnt++;
+ if (!list_empty(&pring->txcmplq))
+ txcmplq_cnt++;
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0387 NO IOCBQ data: txq_cnt=%d iocb_cnt=%d "
+ "els_txcmplq_cnt=%d\n",
+ txq_cnt, phba->iocb_cnt,
+ txcmplq_cnt);
+ return false;
+ }
+
+ /* Save off the slow-path queue event for work thread to process */
+ memcpy(&irspiocbq->cq_event.cqe.wcqe_cmpl, wcqe, sizeof(*wcqe));
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ list_add_tail(&irspiocbq->cq_event.list,
+ &phba->sli4_hba.sp_queue_event);
+ phba->hba_flag |= HBA_SP_QUEUE_EVT;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ return true;
+}
+
+/**
+ * lpfc_sli4_sp_handle_rel_wcqe - Handle slow-path WQ entry consumed event
+ * @phba: Pointer to HBA context object.
+ * @wcqe: Pointer to work-queue completion queue entry.
+ *
+ * This routine handles slow-path WQ entry consumed event by invoking the
+ * proper WQ release routine to the slow-path WQ.
+ **/
+static void
+lpfc_sli4_sp_handle_rel_wcqe(struct lpfc_hba *phba,
+ struct lpfc_wcqe_release *wcqe)
+{
+ /* sanity check on queue memory */
+ if (unlikely(!phba->sli4_hba.els_wq))
+ return;
+ /* Check for the slow-path ELS work queue */
+ if (bf_get(lpfc_wcqe_r_wq_id, wcqe) == phba->sli4_hba.els_wq->queue_id)
+ lpfc_sli4_wq_release(phba->sli4_hba.els_wq,
+ bf_get(lpfc_wcqe_r_wqe_index, wcqe));
+ else
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "2579 Slow-path wqe consume event carries "
+ "miss-matched qid: wcqe-qid=x%x, sp-qid=x%x\n",
+ bf_get(lpfc_wcqe_r_wqe_index, wcqe),
+ phba->sli4_hba.els_wq->queue_id);
+}
+
+/**
+ * lpfc_sli4_sp_handle_abort_xri_wcqe - Handle a xri abort event
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to a WQ completion queue.
+ * @wcqe: Pointer to work-queue completion queue entry.
+ *
+ * This routine handles an XRI abort event.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_abort_xri_wcqe(struct lpfc_hba *phba,
+ struct lpfc_queue *cq,
+ struct sli4_wcqe_xri_aborted *wcqe)
+{
+ bool workposted = false;
+ struct lpfc_cq_event *cq_event;
+ unsigned long iflags;
+
+ switch (cq->subtype) {
+ case LPFC_IO:
+ lpfc_sli4_io_xri_aborted(phba, wcqe, cq->hdwq);
+ if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
+ /* Notify aborted XRI for NVME work queue */
+ if (phba->nvmet_support)
+ lpfc_sli4_nvmet_xri_aborted(phba, wcqe);
+ }
+ workposted = false;
+ break;
+ case LPFC_NVME_LS: /* NVME LS uses ELS resources */
+ case LPFC_ELS:
+ cq_event = lpfc_cq_event_setup(phba, wcqe, sizeof(*wcqe));
+ if (!cq_event) {
+ workposted = false;
+ break;
+ }
+ cq_event->hdwq = cq->hdwq;
+ spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock,
+ iflags);
+ list_add_tail(&cq_event->list,
+ &phba->sli4_hba.sp_els_xri_aborted_work_queue);
+ /* Set the els xri abort event flag */
+ phba->hba_flag |= ELS_XRI_ABORT_EVENT;
+ spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock,
+ iflags);
+ workposted = true;
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0603 Invalid CQ subtype %d: "
+ "%08x %08x %08x %08x\n",
+ cq->subtype, wcqe->word0, wcqe->parameter,
+ wcqe->word2, wcqe->word3);
+ workposted = false;
+ break;
+ }
+ return workposted;
+}
+
+#define FC_RCTL_MDS_DIAGS 0xF4
+
+/**
+ * lpfc_sli4_sp_handle_rcqe - Process a receive-queue completion queue entry
+ * @phba: Pointer to HBA context object.
+ * @rcqe: Pointer to receive-queue completion queue entry.
+ *
+ * This routine process a receive-queue completion queue entry.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_rcqe *rcqe)
+{
+ bool workposted = false;
+ struct fc_frame_header *fc_hdr;
+ struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq;
+ struct lpfc_queue *drq = phba->sli4_hba.dat_rq;
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct hbq_dmabuf *dma_buf;
+ uint32_t status, rq_id;
+ unsigned long iflags;
+
+ /* sanity check on queue memory */
+ if (unlikely(!hrq) || unlikely(!drq))
+ return workposted;
+
+ if (bf_get(lpfc_cqe_code, rcqe) == CQE_CODE_RECEIVE_V1)
+ rq_id = bf_get(lpfc_rcqe_rq_id_v1, rcqe);
+ else
+ rq_id = bf_get(lpfc_rcqe_rq_id, rcqe);
+ if (rq_id != hrq->queue_id)
+ goto out;
+
+ status = bf_get(lpfc_rcqe_status, rcqe);
+ switch (status) {
+ case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2537 Receive Frame Truncated!!\n");
+ fallthrough;
+ case FC_STATUS_RQ_SUCCESS:
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ lpfc_sli4_rq_release(hrq, drq);
+ dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list);
+ if (!dma_buf) {
+ hrq->RQ_no_buf_found++;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ goto out;
+ }
+ hrq->RQ_rcv_buf++;
+ hrq->RQ_buf_posted--;
+ memcpy(&dma_buf->cq_event.cqe.rcqe_cmpl, rcqe, sizeof(*rcqe));
+
+ fc_hdr = (struct fc_frame_header *)dma_buf->hbuf.virt;
+
+ if (fc_hdr->fh_r_ctl == FC_RCTL_MDS_DIAGS ||
+ fc_hdr->fh_r_ctl == FC_RCTL_DD_UNSOL_DATA) {
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ /* Handle MDS Loopback frames */
+ if (!(phba->pport->load_flag & FC_UNLOADING))
+ lpfc_sli4_handle_mds_loopback(phba->pport,
+ dma_buf);
+ else
+ lpfc_in_buf_free(phba, &dma_buf->dbuf);
+ break;
+ }
+
+ /* save off the frame for the work thread to process */
+ list_add_tail(&dma_buf->cq_event.list,
+ &phba->sli4_hba.sp_queue_event);
+ /* Frame received */
+ phba->hba_flag |= HBA_SP_QUEUE_EVT;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ workposted = true;
+ break;
+ case FC_STATUS_INSUFF_BUF_FRM_DISC:
+ if (phba->nvmet_support) {
+ tgtp = phba->targetport->private;
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6402 RQE Error x%x, posted %d err_cnt "
+ "%d: %x %x %x\n",
+ status, hrq->RQ_buf_posted,
+ hrq->RQ_no_posted_buf,
+ atomic_read(&tgtp->rcv_fcp_cmd_in),
+ atomic_read(&tgtp->rcv_fcp_cmd_out),
+ atomic_read(&tgtp->xmt_fcp_release));
+ }
+ fallthrough;
+
+ case FC_STATUS_INSUFF_BUF_NEED_BUF:
+ hrq->RQ_no_posted_buf++;
+ /* Post more buffers if possible */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ phba->hba_flag |= HBA_POST_RECEIVE_BUFFER;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ workposted = true;
+ break;
+ }
+out:
+ return workposted;
+}
+
+/**
+ * lpfc_sli4_sp_handle_cqe - Process a slow path completion queue entry
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to the completion queue.
+ * @cqe: Pointer to a completion queue entry.
+ *
+ * This routine process a slow-path work-queue or receive queue completion queue
+ * entry.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ struct lpfc_cqe *cqe)
+{
+ struct lpfc_cqe cqevt;
+ bool workposted = false;
+
+ /* Copy the work queue CQE and convert endian order if needed */
+ lpfc_sli4_pcimem_bcopy(cqe, &cqevt, sizeof(struct lpfc_cqe));
+
+ /* Check and process for different type of WCQE and dispatch */
+ switch (bf_get(lpfc_cqe_code, &cqevt)) {
+ case CQE_CODE_COMPL_WQE:
+ /* Process the WQ/RQ complete event */
+ phba->last_completion_time = jiffies;
+ workposted = lpfc_sli4_sp_handle_els_wcqe(phba, cq,
+ (struct lpfc_wcqe_complete *)&cqevt);
+ break;
+ case CQE_CODE_RELEASE_WQE:
+ /* Process the WQ release event */
+ lpfc_sli4_sp_handle_rel_wcqe(phba,
+ (struct lpfc_wcqe_release *)&cqevt);
+ break;
+ case CQE_CODE_XRI_ABORTED:
+ /* Process the WQ XRI abort event */
+ phba->last_completion_time = jiffies;
+ workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
+ (struct sli4_wcqe_xri_aborted *)&cqevt);
+ break;
+ case CQE_CODE_RECEIVE:
+ case CQE_CODE_RECEIVE_V1:
+ /* Process the RQ event */
+ phba->last_completion_time = jiffies;
+ workposted = lpfc_sli4_sp_handle_rcqe(phba,
+ (struct lpfc_rcqe *)&cqevt);
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0388 Not a valid WCQE code: x%x\n",
+ bf_get(lpfc_cqe_code, &cqevt));
+ break;
+ }
+ return workposted;
+}
+
+/**
+ * lpfc_sli4_sp_handle_eqe - Process a slow-path event queue entry
+ * @phba: Pointer to HBA context object.
+ * @eqe: Pointer to fast-path event queue entry.
+ * @speq: Pointer to slow-path event queue.
+ *
+ * This routine process a event queue entry from the slow-path event queue.
+ * It will check the MajorCode and MinorCode to determine this is for a
+ * completion event on a completion queue, if not, an error shall be logged
+ * and just return. Otherwise, it will get to the corresponding completion
+ * queue and process all the entries on that completion queue, rearm the
+ * completion queue, and then return.
+ *
+ **/
+static void
+lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe,
+ struct lpfc_queue *speq)
+{
+ struct lpfc_queue *cq = NULL, *childq;
+ uint16_t cqid;
+ int ret = 0;
+
+ /* Get the reference to the corresponding CQ */
+ cqid = bf_get_le32(lpfc_eqe_resource_id, eqe);
+
+ list_for_each_entry(childq, &speq->child_list, list) {
+ if (childq->queue_id == cqid) {
+ cq = childq;
+ break;
+ }
+ }
+ if (unlikely(!cq)) {
+ if (phba->sli.sli_flag & LPFC_SLI_ACTIVE)
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0365 Slow-path CQ identifier "
+ "(%d) does not exist\n", cqid);
+ return;
+ }
+
+ /* Save EQ associated with this CQ */
+ cq->assoc_qp = speq;
+
+ if (is_kdump_kernel())
+ ret = queue_work(phba->wq, &cq->spwork);
+ else
+ ret = queue_work_on(cq->chann, phba->wq, &cq->spwork);
+
+ if (!ret)
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0390 Cannot schedule queue work "
+ "for CQ eqcqid=%d, cqid=%d on CPU %d\n",
+ cqid, cq->queue_id, raw_smp_processor_id());
+}
+
+/**
+ * __lpfc_sli4_process_cq - Process elements of a CQ
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to CQ to be processed
+ * @handler: Routine to process each cqe
+ * @delay: Pointer to usdelay to set in case of rescheduling of the handler
+ * @poll_mode: Polling mode we were called from
+ *
+ * This routine processes completion queue entries in a CQ. While a valid
+ * queue element is found, the handler is called. During processing checks
+ * are made for periodic doorbell writes to let the hardware know of
+ * element consumption.
+ *
+ * If the max limit on cqes to process is hit, or there are no more valid
+ * entries, the loop stops. If we processed a sufficient number of elements,
+ * meaning there is sufficient load, rather than rearming and generating
+ * another interrupt, a cq rescheduling delay will be set. A delay of 0
+ * indicates no rescheduling.
+ *
+ * Returns True if work scheduled, False otherwise.
+ **/
+static bool
+__lpfc_sli4_process_cq(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ bool (*handler)(struct lpfc_hba *, struct lpfc_queue *,
+ struct lpfc_cqe *), unsigned long *delay,
+ enum lpfc_poll_mode poll_mode)
+{
+ struct lpfc_cqe *cqe;
+ bool workposted = false;
+ int count = 0, consumed = 0;
+ bool arm = true;
+
+ /* default - no reschedule */
+ *delay = 0;
+
+ if (cmpxchg(&cq->queue_claimed, 0, 1) != 0)
+ goto rearm_and_exit;
+
+ /* Process all the entries to the CQ */
+ cq->q_flag = 0;
+ cqe = lpfc_sli4_cq_get(cq);
+ while (cqe) {
+ workposted |= handler(phba, cq, cqe);
+ __lpfc_sli4_consume_cqe(phba, cq, cqe);
+
+ consumed++;
+ if (!(++count % cq->max_proc_limit))
+ break;
+
+ if (!(count % cq->notify_interval)) {
+ phba->sli4_hba.sli4_write_cq_db(phba, cq, consumed,
+ LPFC_QUEUE_NOARM);
+ consumed = 0;
+ cq->assoc_qp->q_flag |= HBA_EQ_DELAY_CHK;
+ }
+
+ if (count == LPFC_NVMET_CQ_NOTIFY)
+ cq->q_flag |= HBA_NVMET_CQ_NOTIFY;
+
+ cqe = lpfc_sli4_cq_get(cq);
+ }
+ if (count >= phba->cfg_cq_poll_threshold) {
+ *delay = 1;
+ arm = false;
+ }
+
+ /* Note: complete the irq_poll softirq before rearming CQ */
+ if (poll_mode == LPFC_IRQ_POLL)
+ irq_poll_complete(&cq->iop);
+
+ /* Track the max number of CQEs processed in 1 EQ */
+ if (count > cq->CQ_max_cqe)
+ cq->CQ_max_cqe = count;
+
+ cq->assoc_qp->EQ_cqe_cnt += count;
+
+ /* Catch the no cq entry condition */
+ if (unlikely(count == 0))
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0369 No entry from completion queue "
+ "qid=%d\n", cq->queue_id);
+
+ xchg(&cq->queue_claimed, 0);
+
+rearm_and_exit:
+ phba->sli4_hba.sli4_write_cq_db(phba, cq, consumed,
+ arm ? LPFC_QUEUE_REARM : LPFC_QUEUE_NOARM);
+
+ return workposted;
+}
+
+/**
+ * __lpfc_sli4_sp_process_cq - Process a slow-path event queue entry
+ * @cq: pointer to CQ to process
+ *
+ * This routine calls the cq processing routine with a handler specific
+ * to the type of queue bound to it.
+ *
+ * The CQ routine returns two values: the first is the calling status,
+ * which indicates whether work was queued to the background discovery
+ * thread. If true, the routine should wakeup the discovery thread;
+ * the second is the delay parameter. If non-zero, rather than rearming
+ * the CQ and yet another interrupt, the CQ handler should be queued so
+ * that it is processed in a subsequent polling action. The value of
+ * the delay indicates when to reschedule it.
+ **/
+static void
+__lpfc_sli4_sp_process_cq(struct lpfc_queue *cq)
+{
+ struct lpfc_hba *phba = cq->phba;
+ unsigned long delay;
+ bool workposted = false;
+ int ret = 0;
+
+ /* Process and rearm the CQ */
+ switch (cq->type) {
+ case LPFC_MCQ:
+ workposted |= __lpfc_sli4_process_cq(phba, cq,
+ lpfc_sli4_sp_handle_mcqe,
+ &delay, LPFC_QUEUE_WORK);
+ break;
+ case LPFC_WCQ:
+ if (cq->subtype == LPFC_IO)
+ workposted |= __lpfc_sli4_process_cq(phba, cq,
+ lpfc_sli4_fp_handle_cqe,
+ &delay, LPFC_QUEUE_WORK);
+ else
+ workposted |= __lpfc_sli4_process_cq(phba, cq,
+ lpfc_sli4_sp_handle_cqe,
+ &delay, LPFC_QUEUE_WORK);
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0370 Invalid completion queue type (%d)\n",
+ cq->type);
+ return;
+ }
+
+ if (delay) {
+ if (is_kdump_kernel())
+ ret = queue_delayed_work(phba->wq, &cq->sched_spwork,
+ delay);
+ else
+ ret = queue_delayed_work_on(cq->chann, phba->wq,
+ &cq->sched_spwork, delay);
+ if (!ret)
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0394 Cannot schedule queue work "
+ "for cqid=%d on CPU %d\n",
+ cq->queue_id, cq->chann);
+ }
+
+ /* wake up worker thread if there are works to be done */
+ if (workposted)
+ lpfc_worker_wake_up(phba);
+}
+
+/**
+ * lpfc_sli4_sp_process_cq - slow-path work handler when started by
+ * interrupt
+ * @work: pointer to work element
+ *
+ * translates from the work handler and calls the slow-path handler.
+ **/
+static void
+lpfc_sli4_sp_process_cq(struct work_struct *work)
+{
+ struct lpfc_queue *cq = container_of(work, struct lpfc_queue, spwork);
+
+ __lpfc_sli4_sp_process_cq(cq);
+}
+
+/**
+ * lpfc_sli4_dly_sp_process_cq - slow-path work handler when started by timer
+ * @work: pointer to work element
+ *
+ * translates from the work handler and calls the slow-path handler.
+ **/
+static void
+lpfc_sli4_dly_sp_process_cq(struct work_struct *work)
+{
+ struct lpfc_queue *cq = container_of(to_delayed_work(work),
+ struct lpfc_queue, sched_spwork);
+
+ __lpfc_sli4_sp_process_cq(cq);
+}
+
+/**
+ * lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to associated CQ
+ * @wcqe: Pointer to work-queue completion queue entry.
+ *
+ * This routine process a fast-path work queue completion entry from fast-path
+ * event queue for FCP command response completion.
+ **/
+static void
+lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ struct lpfc_wcqe_complete *wcqe)
+{
+ struct lpfc_sli_ring *pring = cq->pring;
+ struct lpfc_iocbq *cmdiocbq;
+ unsigned long iflags;
+
+ /* Check for response status */
+ if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) {
+ /* If resource errors reported from HBA, reduce queue
+ * depth of the SCSI device.
+ */
+ if (((bf_get(lpfc_wcqe_c_status, wcqe) ==
+ IOSTAT_LOCAL_REJECT)) &&
+ ((wcqe->parameter & IOERR_PARAM_MASK) ==
+ IOERR_NO_RESOURCES))
+ phba->lpfc_rampdown_queue_depth(phba);
+
+ /* Log the cmpl status */
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "0373 FCP CQE cmpl: status=x%x: "
+ "CQE: %08x %08x %08x %08x\n",
+ bf_get(lpfc_wcqe_c_status, wcqe),
+ wcqe->word0, wcqe->total_data_placed,
+ wcqe->parameter, wcqe->word3);
+ }
+
+ /* Look up the FCP command IOCB and create pseudo response IOCB */
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ pring->stats.iocb_event++;
+ cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
+ bf_get(lpfc_wcqe_c_request_tag, wcqe));
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ if (unlikely(!cmdiocbq)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0374 FCP complete with no corresponding "
+ "cmdiocb: iotag (%d)\n",
+ bf_get(lpfc_wcqe_c_request_tag, wcqe));
+ return;
+ }
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ cmdiocbq->isr_timestamp = cq->isr_timestamp;
+#endif
+ if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ cmdiocbq->cmd_flag |= LPFC_EXCHANGE_BUSY;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ }
+
+ if (cmdiocbq->cmd_cmpl) {
+ /* For FCP the flag is cleared in cmd_cmpl */
+ if (!(cmdiocbq->cmd_flag & LPFC_IO_FCP) &&
+ cmdiocbq->cmd_flag & LPFC_DRIVER_ABORTED) {
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ cmdiocbq->cmd_flag &= ~LPFC_DRIVER_ABORTED;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ }
+
+ /* Pass the cmd_iocb and the wcqe to the upper layer */
+ memcpy(&cmdiocbq->wcqe_cmpl, wcqe,
+ sizeof(struct lpfc_wcqe_complete));
+ cmdiocbq->cmd_cmpl(phba, cmdiocbq, cmdiocbq);
+ } else {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0375 FCP cmdiocb not callback function "
+ "iotag: (%d)\n",
+ bf_get(lpfc_wcqe_c_request_tag, wcqe));
+ }
+}
+
+/**
+ * lpfc_sli4_fp_handle_rel_wcqe - Handle fast-path WQ entry consumed event
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to completion queue.
+ * @wcqe: Pointer to work-queue completion queue entry.
+ *
+ * This routine handles an fast-path WQ entry consumed event by invoking the
+ * proper WQ release routine to the slow-path WQ.
+ **/
+static void
+lpfc_sli4_fp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ struct lpfc_wcqe_release *wcqe)
+{
+ struct lpfc_queue *childwq;
+ bool wqid_matched = false;
+ uint16_t hba_wqid;
+
+ /* Check for fast-path FCP work queue release */
+ hba_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe);
+ list_for_each_entry(childwq, &cq->child_list, list) {
+ if (childwq->queue_id == hba_wqid) {
+ lpfc_sli4_wq_release(childwq,
+ bf_get(lpfc_wcqe_r_wqe_index, wcqe));
+ if (childwq->q_flag & HBA_NVMET_WQFULL)
+ lpfc_nvmet_wqfull_process(phba, childwq);
+ wqid_matched = true;
+ break;
+ }
+ }
+ /* Report warning log message if no match found */
+ if (wqid_matched != true)
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "2580 Fast-path wqe consume event carries "
+ "miss-matched qid: wcqe-qid=x%x\n", hba_wqid);
+}
+
+/**
+ * lpfc_sli4_nvmet_handle_rcqe - Process a receive-queue completion queue entry
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to completion queue.
+ * @rcqe: Pointer to receive-queue completion queue entry.
+ *
+ * This routine process a receive-queue completion queue entry.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_nvmet_handle_rcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ struct lpfc_rcqe *rcqe)
+{
+ bool workposted = false;
+ struct lpfc_queue *hrq;
+ struct lpfc_queue *drq;
+ struct rqb_dmabuf *dma_buf;
+ struct fc_frame_header *fc_hdr;
+ struct lpfc_nvmet_tgtport *tgtp;
+ uint32_t status, rq_id;
+ unsigned long iflags;
+ uint32_t fctl, idx;
+
+ if ((phba->nvmet_support == 0) ||
+ (phba->sli4_hba.nvmet_cqset == NULL))
+ return workposted;
+
+ idx = cq->queue_id - phba->sli4_hba.nvmet_cqset[0]->queue_id;
+ hrq = phba->sli4_hba.nvmet_mrq_hdr[idx];
+ drq = phba->sli4_hba.nvmet_mrq_data[idx];
+
+ /* sanity check on queue memory */
+ if (unlikely(!hrq) || unlikely(!drq))
+ return workposted;
+
+ if (bf_get(lpfc_cqe_code, rcqe) == CQE_CODE_RECEIVE_V1)
+ rq_id = bf_get(lpfc_rcqe_rq_id_v1, rcqe);
+ else
+ rq_id = bf_get(lpfc_rcqe_rq_id, rcqe);
+
+ if ((phba->nvmet_support == 0) ||
+ (rq_id != hrq->queue_id))
+ return workposted;
+
+ status = bf_get(lpfc_rcqe_status, rcqe);
+ switch (status) {
+ case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6126 Receive Frame Truncated!!\n");
+ fallthrough;
+ case FC_STATUS_RQ_SUCCESS:
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ lpfc_sli4_rq_release(hrq, drq);
+ dma_buf = lpfc_sli_rqbuf_get(phba, hrq);
+ if (!dma_buf) {
+ hrq->RQ_no_buf_found++;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ goto out;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ hrq->RQ_rcv_buf++;
+ hrq->RQ_buf_posted--;
+ fc_hdr = (struct fc_frame_header *)dma_buf->hbuf.virt;
+
+ /* Just some basic sanity checks on FCP Command frame */
+ fctl = (fc_hdr->fh_f_ctl[0] << 16 |
+ fc_hdr->fh_f_ctl[1] << 8 |
+ fc_hdr->fh_f_ctl[2]);
+ if (((fctl &
+ (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) !=
+ (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) ||
+ (fc_hdr->fh_seq_cnt != 0)) /* 0 byte swapped is still 0 */
+ goto drop;
+
+ if (fc_hdr->fh_type == FC_TYPE_FCP) {
+ dma_buf->bytes_recv = bf_get(lpfc_rcqe_length, rcqe);
+ lpfc_nvmet_unsol_fcp_event(
+ phba, idx, dma_buf, cq->isr_timestamp,
+ cq->q_flag & HBA_NVMET_CQ_NOTIFY);
+ return false;
+ }
+drop:
+ lpfc_rq_buf_free(phba, &dma_buf->hbuf);
+ break;
+ case FC_STATUS_INSUFF_BUF_FRM_DISC:
+ if (phba->nvmet_support) {
+ tgtp = phba->targetport->private;
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6401 RQE Error x%x, posted %d err_cnt "
+ "%d: %x %x %x\n",
+ status, hrq->RQ_buf_posted,
+ hrq->RQ_no_posted_buf,
+ atomic_read(&tgtp->rcv_fcp_cmd_in),
+ atomic_read(&tgtp->rcv_fcp_cmd_out),
+ atomic_read(&tgtp->xmt_fcp_release));
+ }
+ fallthrough;
+
+ case FC_STATUS_INSUFF_BUF_NEED_BUF:
+ hrq->RQ_no_posted_buf++;
+ /* Post more buffers if possible */
+ break;
+ }
+out:
+ return workposted;
+}
+
+/**
+ * lpfc_sli4_fp_handle_cqe - Process fast-path work queue completion entry
+ * @phba: adapter with cq
+ * @cq: Pointer to the completion queue.
+ * @cqe: Pointer to fast-path completion queue entry.
+ *
+ * This routine process a fast-path work queue completion entry from fast-path
+ * event queue for FCP command response completion.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_fp_handle_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ struct lpfc_cqe *cqe)
+{
+ struct lpfc_wcqe_release wcqe;
+ bool workposted = false;
+
+ /* Copy the work queue CQE and convert endian order if needed */
+ lpfc_sli4_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
+
+ /* Check and process for different type of WCQE and dispatch */
+ switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
+ case CQE_CODE_COMPL_WQE:
+ case CQE_CODE_NVME_ERSP:
+ cq->CQ_wq++;
+ /* Process the WQ complete event */
+ phba->last_completion_time = jiffies;
+ if (cq->subtype == LPFC_IO || cq->subtype == LPFC_NVME_LS)
+ lpfc_sli4_fp_handle_fcp_wcqe(phba, cq,
+ (struct lpfc_wcqe_complete *)&wcqe);
+ break;
+ case CQE_CODE_RELEASE_WQE:
+ cq->CQ_release_wqe++;
+ /* Process the WQ release event */
+ lpfc_sli4_fp_handle_rel_wcqe(phba, cq,
+ (struct lpfc_wcqe_release *)&wcqe);
+ break;
+ case CQE_CODE_XRI_ABORTED:
+ cq->CQ_xri_aborted++;
+ /* Process the WQ XRI abort event */
+ phba->last_completion_time = jiffies;
+ workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
+ (struct sli4_wcqe_xri_aborted *)&wcqe);
+ break;
+ case CQE_CODE_RECEIVE_V1:
+ case CQE_CODE_RECEIVE:
+ phba->last_completion_time = jiffies;
+ if (cq->subtype == LPFC_NVMET) {
+ workposted = lpfc_sli4_nvmet_handle_rcqe(
+ phba, cq, (struct lpfc_rcqe *)&wcqe);
+ }
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0144 Not a valid CQE code: x%x\n",
+ bf_get(lpfc_wcqe_c_code, &wcqe));
+ break;
+ }
+ return workposted;
+}
+
+/**
+ * lpfc_sli4_sched_cq_work - Schedules cq work
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to CQ
+ * @cqid: CQ ID
+ *
+ * This routine checks the poll mode of the CQ corresponding to
+ * cq->chann, then either schedules a softirq or queue_work to complete
+ * cq work.
+ *
+ * queue_work path is taken if in NVMET mode, or if poll_mode is in
+ * LPFC_QUEUE_WORK mode. Otherwise, softirq path is taken.
+ *
+ **/
+static void lpfc_sli4_sched_cq_work(struct lpfc_hba *phba,
+ struct lpfc_queue *cq, uint16_t cqid)
+{
+ int ret = 0;
+
+ switch (cq->poll_mode) {
+ case LPFC_IRQ_POLL:
+ /* CGN mgmt is mutually exclusive from softirq processing */
+ if (phba->cmf_active_mode == LPFC_CFG_OFF) {
+ irq_poll_sched(&cq->iop);
+ break;
+ }
+ fallthrough;
+ case LPFC_QUEUE_WORK:
+ default:
+ if (is_kdump_kernel())
+ ret = queue_work(phba->wq, &cq->irqwork);
+ else
+ ret = queue_work_on(cq->chann, phba->wq, &cq->irqwork);
+ if (!ret)
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0383 Cannot schedule queue work "
+ "for CQ eqcqid=%d, cqid=%d on CPU %d\n",
+ cqid, cq->queue_id,
+ raw_smp_processor_id());
+ }
+}
+
+/**
+ * lpfc_sli4_hba_handle_eqe - Process a fast-path event queue entry
+ * @phba: Pointer to HBA context object.
+ * @eq: Pointer to the queue structure.
+ * @eqe: Pointer to fast-path event queue entry.
+ *
+ * This routine process a event queue entry from the fast-path event queue.
+ * It will check the MajorCode and MinorCode to determine this is for a
+ * completion event on a completion queue, if not, an error shall be logged
+ * and just return. Otherwise, it will get to the corresponding completion
+ * queue and process all the entries on the completion queue, rearm the
+ * completion queue, and then return.
+ **/
+static void
+lpfc_sli4_hba_handle_eqe(struct lpfc_hba *phba, struct lpfc_queue *eq,
+ struct lpfc_eqe *eqe)
+{
+ struct lpfc_queue *cq = NULL;
+ uint32_t qidx = eq->hdwq;
+ uint16_t cqid, id;
+
+ if (unlikely(bf_get_le32(lpfc_eqe_major_code, eqe) != 0)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0366 Not a valid completion "
+ "event: majorcode=x%x, minorcode=x%x\n",
+ bf_get_le32(lpfc_eqe_major_code, eqe),
+ bf_get_le32(lpfc_eqe_minor_code, eqe));
+ return;
+ }
+
+ /* Get the reference to the corresponding CQ */
+ cqid = bf_get_le32(lpfc_eqe_resource_id, eqe);
+
+ /* Use the fast lookup method first */
+ if (cqid <= phba->sli4_hba.cq_max) {
+ cq = phba->sli4_hba.cq_lookup[cqid];
+ if (cq)
+ goto work_cq;
+ }
+
+ /* Next check for NVMET completion */
+ if (phba->cfg_nvmet_mrq && phba->sli4_hba.nvmet_cqset) {
+ id = phba->sli4_hba.nvmet_cqset[0]->queue_id;
+ if ((cqid >= id) && (cqid < (id + phba->cfg_nvmet_mrq))) {
+ /* Process NVMET unsol rcv */
+ cq = phba->sli4_hba.nvmet_cqset[cqid - id];
+ goto process_cq;
+ }
+ }
+
+ if (phba->sli4_hba.nvmels_cq &&
+ (cqid == phba->sli4_hba.nvmels_cq->queue_id)) {
+ /* Process NVME unsol rcv */
+ cq = phba->sli4_hba.nvmels_cq;
+ }
+
+ /* Otherwise this is a Slow path event */
+ if (cq == NULL) {
+ lpfc_sli4_sp_handle_eqe(phba, eqe,
+ phba->sli4_hba.hdwq[qidx].hba_eq);
+ return;
+ }
+
+process_cq:
+ if (unlikely(cqid != cq->queue_id)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0368 Miss-matched fast-path completion "
+ "queue identifier: eqcqid=%d, fcpcqid=%d\n",
+ cqid, cq->queue_id);
+ return;
+ }
+
+work_cq:
+#if defined(CONFIG_SCSI_LPFC_DEBUG_FS)
+ if (phba->ktime_on)
+ cq->isr_timestamp = ktime_get_ns();
+ else
+ cq->isr_timestamp = 0;
+#endif
+ lpfc_sli4_sched_cq_work(phba, cq, cqid);
+}
+
+/**
+ * __lpfc_sli4_hba_process_cq - Process a fast-path event queue entry
+ * @cq: Pointer to CQ to be processed
+ * @poll_mode: Enum lpfc_poll_state to determine poll mode
+ *
+ * This routine calls the cq processing routine with the handler for
+ * fast path CQEs.
+ *
+ * The CQ routine returns two values: the first is the calling status,
+ * which indicates whether work was queued to the background discovery
+ * thread. If true, the routine should wakeup the discovery thread;
+ * the second is the delay parameter. If non-zero, rather than rearming
+ * the CQ and yet another interrupt, the CQ handler should be queued so
+ * that it is processed in a subsequent polling action. The value of
+ * the delay indicates when to reschedule it.
+ **/
+static void
+__lpfc_sli4_hba_process_cq(struct lpfc_queue *cq,
+ enum lpfc_poll_mode poll_mode)
+{
+ struct lpfc_hba *phba = cq->phba;
+ unsigned long delay;
+ bool workposted = false;
+ int ret = 0;
+
+ /* process and rearm the CQ */
+ workposted |= __lpfc_sli4_process_cq(phba, cq, lpfc_sli4_fp_handle_cqe,
+ &delay, poll_mode);
+
+ if (delay) {
+ if (is_kdump_kernel())
+ ret = queue_delayed_work(phba->wq, &cq->sched_irqwork,
+ delay);
+ else
+ ret = queue_delayed_work_on(cq->chann, phba->wq,
+ &cq->sched_irqwork, delay);
+ if (!ret)
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0367 Cannot schedule queue work "
+ "for cqid=%d on CPU %d\n",
+ cq->queue_id, cq->chann);
+ }
+
+ /* wake up worker thread if there are works to be done */
+ if (workposted)
+ lpfc_worker_wake_up(phba);
+}
+
+/**
+ * lpfc_sli4_hba_process_cq - fast-path work handler when started by
+ * interrupt
+ * @work: pointer to work element
+ *
+ * translates from the work handler and calls the fast-path handler.
+ **/
+static void
+lpfc_sli4_hba_process_cq(struct work_struct *work)
+{
+ struct lpfc_queue *cq = container_of(work, struct lpfc_queue, irqwork);
+
+ __lpfc_sli4_hba_process_cq(cq, LPFC_QUEUE_WORK);
+}
+
+/**
+ * lpfc_sli4_dly_hba_process_cq - fast-path work handler when started by timer
+ * @work: pointer to work element
+ *
+ * translates from the work handler and calls the fast-path handler.
+ **/
+static void
+lpfc_sli4_dly_hba_process_cq(struct work_struct *work)
+{
+ struct lpfc_queue *cq = container_of(to_delayed_work(work),
+ struct lpfc_queue, sched_irqwork);
+
+ __lpfc_sli4_hba_process_cq(cq, LPFC_QUEUE_WORK);
+}
+
+/**
+ * lpfc_sli4_hba_intr_handler - HBA interrupt handler to SLI-4 device
+ * @irq: Interrupt number.
+ * @dev_id: The device context pointer.
+ *
+ * This function is directly called from the PCI layer as an interrupt
+ * service routine when device with SLI-4 interface spec is enabled with
+ * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
+ * ring event in the HBA. However, when the device is enabled with either
+ * MSI or Pin-IRQ interrupt mode, this function is called as part of the
+ * device-level interrupt handler. When the PCI slot is in error recovery
+ * or the HBA is undergoing initialization, the interrupt handler will not
+ * process the interrupt. The SCSI FCP fast-path ring event are handled in
+ * the intrrupt context. This function is called without any lock held.
+ * It gets the hbalock to access and update SLI data structures. Note that,
+ * the FCP EQ to FCP CQ are one-to-one map such that the FCP EQ index is
+ * equal to that of FCP CQ index.
+ *
+ * The link attention and ELS ring attention events are handled
+ * by the worker thread. The interrupt handler signals the worker thread
+ * and returns for these events. This function is called without any lock
+ * held. It gets the hbalock to access and update SLI data structures.
+ *
+ * This function returns IRQ_HANDLED when interrupt is handled else it
+ * returns IRQ_NONE.
+ **/
+irqreturn_t
+lpfc_sli4_hba_intr_handler(int irq, void *dev_id)
+{
+ struct lpfc_hba *phba;
+ struct lpfc_hba_eq_hdl *hba_eq_hdl;
+ struct lpfc_queue *fpeq;
+ unsigned long iflag;
+ int ecount = 0;
+ int hba_eqidx;
+ struct lpfc_eq_intr_info *eqi;
+
+ /* Get the driver's phba structure from the dev_id */
+ hba_eq_hdl = (struct lpfc_hba_eq_hdl *)dev_id;
+ phba = hba_eq_hdl->phba;
+ hba_eqidx = hba_eq_hdl->idx;
+
+ if (unlikely(!phba))
+ return IRQ_NONE;
+ if (unlikely(!phba->sli4_hba.hdwq))
+ return IRQ_NONE;
+
+ /* Get to the EQ struct associated with this vector */
+ fpeq = phba->sli4_hba.hba_eq_hdl[hba_eqidx].eq;
+ if (unlikely(!fpeq))
+ return IRQ_NONE;
+
+ /* Check device state for handling interrupt */
+ if (unlikely(lpfc_intr_state_check(phba))) {
+ /* Check again for link_state with lock held */
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ if (phba->link_state < LPFC_LINK_DOWN)
+ /* Flush, clear interrupt, and rearm the EQ */
+ lpfc_sli4_eqcq_flush(phba, fpeq);
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return IRQ_NONE;
+ }
+
+ eqi = this_cpu_ptr(phba->sli4_hba.eq_info);
+ eqi->icnt++;
+
+ fpeq->last_cpu = raw_smp_processor_id();
+
+ if (eqi->icnt > LPFC_EQD_ISR_TRIGGER &&
+ fpeq->q_flag & HBA_EQ_DELAY_CHK &&
+ phba->cfg_auto_imax &&
+ fpeq->q_mode != LPFC_MAX_AUTO_EQ_DELAY &&
+ phba->sli.sli_flag & LPFC_SLI_USE_EQDR)
+ lpfc_sli4_mod_hba_eq_delay(phba, fpeq, LPFC_MAX_AUTO_EQ_DELAY);
+
+ /* process and rearm the EQ */
+ ecount = lpfc_sli4_process_eq(phba, fpeq, LPFC_QUEUE_REARM);
+
+ if (unlikely(ecount == 0)) {
+ fpeq->EQ_no_entry++;
+ if (phba->intr_type == MSIX)
+ /* MSI-X treated interrupt served as no EQ share INT */
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "0358 MSI-X interrupt with no EQE\n");
+ else
+ /* Non MSI-X treated on interrupt as EQ share INT */
+ return IRQ_NONE;
+ }
+
+ return IRQ_HANDLED;
+} /* lpfc_sli4_hba_intr_handler */
+
+/**
+ * lpfc_sli4_intr_handler - Device-level interrupt handler for SLI-4 device
+ * @irq: Interrupt number.
+ * @dev_id: The device context pointer.
+ *
+ * This function is the device-level interrupt handler to device with SLI-4
+ * interface spec, called from the PCI layer when either MSI or Pin-IRQ
+ * interrupt mode is enabled and there is an event in the HBA which requires
+ * driver attention. This function invokes the slow-path interrupt attention
+ * handling function and fast-path interrupt attention handling function in
+ * turn to process the relevant HBA attention events. This function is called
+ * without any lock held. It gets the hbalock to access and update SLI data
+ * structures.
+ *
+ * This function returns IRQ_HANDLED when interrupt is handled, else it
+ * returns IRQ_NONE.
+ **/
+irqreturn_t
+lpfc_sli4_intr_handler(int irq, void *dev_id)
+{
+ struct lpfc_hba *phba;
+ irqreturn_t hba_irq_rc;
+ bool hba_handled = false;
+ int qidx;
+
+ /* Get the driver's phba structure from the dev_id */
+ phba = (struct lpfc_hba *)dev_id;
+
+ if (unlikely(!phba))
+ return IRQ_NONE;
+
+ /*
+ * Invoke fast-path host attention interrupt handling as appropriate.
+ */
+ for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
+ hba_irq_rc = lpfc_sli4_hba_intr_handler(irq,
+ &phba->sli4_hba.hba_eq_hdl[qidx]);
+ if (hba_irq_rc == IRQ_HANDLED)
+ hba_handled |= true;
+ }
+
+ return (hba_handled == true) ? IRQ_HANDLED : IRQ_NONE;
+} /* lpfc_sli4_intr_handler */
+
+void lpfc_sli4_poll_hbtimer(struct timer_list *t)
+{
+ struct lpfc_hba *phba = from_timer(phba, t, cpuhp_poll_timer);
+ struct lpfc_queue *eq;
+ int i = 0;
+
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(eq, &phba->poll_list, _poll_list)
+ i += lpfc_sli4_poll_eq(eq, LPFC_POLL_SLOWPATH);
+ if (!list_empty(&phba->poll_list))
+ mod_timer(&phba->cpuhp_poll_timer,
+ jiffies + msecs_to_jiffies(LPFC_POLL_HB));
+
+ rcu_read_unlock();
+}
+
+inline int lpfc_sli4_poll_eq(struct lpfc_queue *eq, uint8_t path)
+{
+ struct lpfc_hba *phba = eq->phba;
+ int i = 0;
+
+ /*
+ * Unlocking an irq is one of the entry point to check
+ * for re-schedule, but we are good for io submission
+ * path as midlayer does a get_cpu to glue us in. Flush
+ * out the invalidate queue so we can see the updated
+ * value for flag.
+ */
+ smp_rmb();
+
+ if (READ_ONCE(eq->mode) == LPFC_EQ_POLL)
+ /* We will not likely get the completion for the caller
+ * during this iteration but i guess that's fine.
+ * Future io's coming on this eq should be able to
+ * pick it up. As for the case of single io's, they
+ * will be handled through a sched from polling timer
+ * function which is currently triggered every 1msec.
+ */
+ i = lpfc_sli4_process_eq(phba, eq, LPFC_QUEUE_NOARM);
+
+ return i;
+}
+
+static inline void lpfc_sli4_add_to_poll_list(struct lpfc_queue *eq)
+{
+ struct lpfc_hba *phba = eq->phba;
+
+ /* kickstart slowpath processing if needed */
+ if (list_empty(&phba->poll_list))
+ mod_timer(&phba->cpuhp_poll_timer,
+ jiffies + msecs_to_jiffies(LPFC_POLL_HB));
+
+ list_add_rcu(&eq->_poll_list, &phba->poll_list);
+ synchronize_rcu();
+}
+
+static inline void lpfc_sli4_remove_from_poll_list(struct lpfc_queue *eq)
+{
+ struct lpfc_hba *phba = eq->phba;
+
+ /* Disable slowpath processing for this eq. Kick start the eq
+ * by RE-ARMING the eq's ASAP
+ */
+ list_del_rcu(&eq->_poll_list);
+ synchronize_rcu();
+
+ if (list_empty(&phba->poll_list))
+ del_timer_sync(&phba->cpuhp_poll_timer);
+}
+
+void lpfc_sli4_cleanup_poll_list(struct lpfc_hba *phba)
+{
+ struct lpfc_queue *eq, *next;
+
+ list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list)
+ list_del(&eq->_poll_list);
+
+ INIT_LIST_HEAD(&phba->poll_list);
+ synchronize_rcu();
+}
+
+static inline void
+__lpfc_sli4_switch_eqmode(struct lpfc_queue *eq, uint8_t mode)
+{
+ if (mode == eq->mode)
+ return;
+ /*
+ * currently this function is only called during a hotplug
+ * event and the cpu on which this function is executing
+ * is going offline. By now the hotplug has instructed
+ * the scheduler to remove this cpu from cpu active mask.
+ * So we don't need to work about being put aside by the
+ * scheduler for a high priority process. Yes, the inte-
+ * rrupts could come but they are known to retire ASAP.
+ */
+
+ /* Disable polling in the fastpath */
+ WRITE_ONCE(eq->mode, mode);
+ /* flush out the store buffer */
+ smp_wmb();
+
+ /*
+ * Add this eq to the polling list and start polling. For
+ * a grace period both interrupt handler and poller will
+ * try to process the eq _but_ that's fine. We have a
+ * synchronization mechanism in place (queue_claimed) to
+ * deal with it. This is just a draining phase for int-
+ * errupt handler (not eq's) as we have guranteed through
+ * barrier that all the CPUs have seen the new CQ_POLLED
+ * state. which will effectively disable the REARMING of
+ * the EQ. The whole idea is eq's die off eventually as
+ * we are not rearming EQ's anymore.
+ */
+ mode ? lpfc_sli4_add_to_poll_list(eq) :
+ lpfc_sli4_remove_from_poll_list(eq);
+}
+
+void lpfc_sli4_start_polling(struct lpfc_queue *eq)
+{
+ __lpfc_sli4_switch_eqmode(eq, LPFC_EQ_POLL);
+}
+
+void lpfc_sli4_stop_polling(struct lpfc_queue *eq)
+{
+ struct lpfc_hba *phba = eq->phba;
+
+ __lpfc_sli4_switch_eqmode(eq, LPFC_EQ_INTERRUPT);
+
+ /* Kick start for the pending io's in h/w.
+ * Once we switch back to interrupt processing on a eq
+ * the io path completion will only arm eq's when it
+ * receives a completion. But since eq's are in disa-
+ * rmed state it doesn't receive a completion. This
+ * creates a deadlock scenaro.
+ */
+ phba->sli4_hba.sli4_write_eq_db(phba, eq, 0, LPFC_QUEUE_REARM);
+}
+
+/**
+ * lpfc_sli4_queue_free - free a queue structure and associated memory
+ * @queue: The queue structure to free.
+ *
+ * This function frees a queue structure and the DMAable memory used for
+ * the host resident queue. This function must be called after destroying the
+ * queue on the HBA.
+ **/
+void
+lpfc_sli4_queue_free(struct lpfc_queue *queue)
+{
+ struct lpfc_dmabuf *dmabuf;
+
+ if (!queue)
+ return;
+
+ if (!list_empty(&queue->wq_list))
+ list_del(&queue->wq_list);
+
+ while (!list_empty(&queue->page_list)) {
+ list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf,
+ list);
+ dma_free_coherent(&queue->phba->pcidev->dev, queue->page_size,
+ dmabuf->virt, dmabuf->phys);
+ kfree(dmabuf);
+ }
+ if (queue->rqbp) {
+ lpfc_free_rq_buffer(queue->phba, queue);
+ kfree(queue->rqbp);
+ }
+
+ if (!list_empty(&queue->cpu_list))
+ list_del(&queue->cpu_list);
+
+ kfree(queue);
+ return;
+}
+
+/**
+ * lpfc_sli4_queue_alloc - Allocate and initialize a queue structure
+ * @phba: The HBA that this queue is being created on.
+ * @page_size: The size of a queue page
+ * @entry_size: The size of each queue entry for this queue.
+ * @entry_count: The number of entries that this queue will handle.
+ * @cpu: The cpu that will primarily utilize this queue.
+ *
+ * This function allocates a queue structure and the DMAable memory used for
+ * the host resident queue. This function must be called before creating the
+ * queue on the HBA.
+ **/
+struct lpfc_queue *
+lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t page_size,
+ uint32_t entry_size, uint32_t entry_count, int cpu)
+{
+ struct lpfc_queue *queue;
+ struct lpfc_dmabuf *dmabuf;
+ uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
+ uint16_t x, pgcnt;
+
+ if (!phba->sli4_hba.pc_sli4_params.supported)
+ hw_page_size = page_size;
+
+ pgcnt = ALIGN(entry_size * entry_count, hw_page_size) / hw_page_size;
+
+ /* If needed, Adjust page count to match the max the adapter supports */
+ if (pgcnt > phba->sli4_hba.pc_sli4_params.wqpcnt)
+ pgcnt = phba->sli4_hba.pc_sli4_params.wqpcnt;
+
+ queue = kzalloc_node(sizeof(*queue) + (sizeof(void *) * pgcnt),
+ GFP_KERNEL, cpu_to_node(cpu));
+ if (!queue)
+ return NULL;
+
+ INIT_LIST_HEAD(&queue->list);
+ INIT_LIST_HEAD(&queue->_poll_list);
+ INIT_LIST_HEAD(&queue->wq_list);
+ INIT_LIST_HEAD(&queue->wqfull_list);
+ INIT_LIST_HEAD(&queue->page_list);
+ INIT_LIST_HEAD(&queue->child_list);
+ INIT_LIST_HEAD(&queue->cpu_list);
+
+ /* Set queue parameters now. If the system cannot provide memory
+ * resources, the free routine needs to know what was allocated.
+ */
+ queue->page_count = pgcnt;
+ queue->q_pgs = (void **)&queue[1];
+ queue->entry_cnt_per_pg = hw_page_size / entry_size;
+ queue->entry_size = entry_size;
+ queue->entry_count = entry_count;
+ queue->page_size = hw_page_size;
+ queue->phba = phba;
+
+ for (x = 0; x < queue->page_count; x++) {
+ dmabuf = kzalloc_node(sizeof(*dmabuf), GFP_KERNEL,
+ dev_to_node(&phba->pcidev->dev));
+ if (!dmabuf)
+ goto out_fail;
+ dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
+ hw_page_size, &dmabuf->phys,
+ GFP_KERNEL);
+ if (!dmabuf->virt) {
+ kfree(dmabuf);
+ goto out_fail;
+ }
+ dmabuf->buffer_tag = x;
+ list_add_tail(&dmabuf->list, &queue->page_list);
+ /* use lpfc_sli4_qe to index a paritcular entry in this page */
+ queue->q_pgs[x] = dmabuf->virt;
+ }
+ INIT_WORK(&queue->irqwork, lpfc_sli4_hba_process_cq);
+ INIT_WORK(&queue->spwork, lpfc_sli4_sp_process_cq);
+ INIT_DELAYED_WORK(&queue->sched_irqwork, lpfc_sli4_dly_hba_process_cq);
+ INIT_DELAYED_WORK(&queue->sched_spwork, lpfc_sli4_dly_sp_process_cq);
+
+ /* notify_interval will be set during q creation */
+
+ return queue;
+out_fail:
+ lpfc_sli4_queue_free(queue);
+ return NULL;
+}
+
+/**
+ * lpfc_dual_chute_pci_bar_map - Map pci base address register to host memory
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @pci_barset: PCI BAR set flag.
+ *
+ * This function shall perform iomap of the specified PCI BAR address to host
+ * memory address if not already done so and return it. The returned host
+ * memory address can be NULL.
+ */
+static void __iomem *
+lpfc_dual_chute_pci_bar_map(struct lpfc_hba *phba, uint16_t pci_barset)
+{
+ if (!phba->pcidev)
+ return NULL;
+
+ switch (pci_barset) {
+ case WQ_PCI_BAR_0_AND_1:
+ return phba->pci_bar0_memmap_p;
+ case WQ_PCI_BAR_2_AND_3:
+ return phba->pci_bar2_memmap_p;
+ case WQ_PCI_BAR_4_AND_5:
+ return phba->pci_bar4_memmap_p;
+ default:
+ break;
+ }
+ return NULL;
+}
+
+/**
+ * lpfc_modify_hba_eq_delay - Modify Delay Multiplier on EQs
+ * @phba: HBA structure that EQs are on.
+ * @startq: The starting EQ index to modify
+ * @numq: The number of EQs (consecutive indexes) to modify
+ * @usdelay: amount of delay
+ *
+ * This function revises the EQ delay on 1 or more EQs. The EQ delay
+ * is set either by writing to a register (if supported by the SLI Port)
+ * or by mailbox command. The mailbox command allows several EQs to be
+ * updated at once.
+ *
+ * The @phba struct is used to send a mailbox command to HBA. The @startq
+ * is used to get the starting EQ index to change. The @numq value is
+ * used to specify how many consecutive EQ indexes, starting at EQ index,
+ * are to be changed. This function is asynchronous and will wait for any
+ * mailbox commands to finish before returning.
+ *
+ * On success this function will return a zero. If unable to allocate
+ * enough memory this function will return -ENOMEM. If a mailbox command
+ * fails this function will return -ENXIO. Note: on ENXIO, some EQs may
+ * have had their delay multipler changed.
+ **/
+void
+lpfc_modify_hba_eq_delay(struct lpfc_hba *phba, uint32_t startq,
+ uint32_t numq, uint32_t usdelay)
+{
+ struct lpfc_mbx_modify_eq_delay *eq_delay;
+ LPFC_MBOXQ_t *mbox;
+ struct lpfc_queue *eq;
+ int cnt = 0, rc, length;
+ uint32_t shdr_status, shdr_add_status;
+ uint32_t dmult;
+ int qidx;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ if (startq >= phba->cfg_irq_chann)
+ return;
+
+ if (usdelay > 0xFFFF) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP | LOG_NVME,
+ "6429 usdelay %d too large. Scaled down to "
+ "0xFFFF.\n", usdelay);
+ usdelay = 0xFFFF;
+ }
+
+ /* set values by EQ_DELAY register if supported */
+ if (phba->sli.sli_flag & LPFC_SLI_USE_EQDR) {
+ for (qidx = startq; qidx < phba->cfg_irq_chann; qidx++) {
+ eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
+ if (!eq)
+ continue;
+
+ lpfc_sli4_mod_hba_eq_delay(phba, eq, usdelay);
+
+ if (++cnt >= numq)
+ break;
+ }
+ return;
+ }
+
+ /* Otherwise, set values by mailbox cmd */
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6428 Failed allocating mailbox cmd buffer."
+ " EQ delay was not set.\n");
+ return;
+ }
+ length = (sizeof(struct lpfc_mbx_modify_eq_delay) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_MODIFY_EQ_DELAY,
+ length, LPFC_SLI4_MBX_EMBED);
+ eq_delay = &mbox->u.mqe.un.eq_delay;
+
+ /* Calculate delay multiper from maximum interrupt per second */
+ dmult = (usdelay * LPFC_DMULT_CONST) / LPFC_SEC_TO_USEC;
+ if (dmult)
+ dmult--;
+ if (dmult > LPFC_DMULT_MAX)
+ dmult = LPFC_DMULT_MAX;
+
+ for (qidx = startq; qidx < phba->cfg_irq_chann; qidx++) {
+ eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
+ if (!eq)
+ continue;
+ eq->q_mode = usdelay;
+ eq_delay->u.request.eq[cnt].eq_id = eq->queue_id;
+ eq_delay->u.request.eq[cnt].phase = 0;
+ eq_delay->u.request.eq[cnt].delay_multi = dmult;
+
+ if (++cnt >= numq)
+ break;
+ }
+ eq_delay->u.request.num_eq = cnt;
+
+ mbox->vport = phba->pport;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ mbox->ctx_ndlp = NULL;
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ shdr = (union lpfc_sli4_cfg_shdr *) &eq_delay->header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2512 MODIFY_EQ_DELAY mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ }
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return;
+}
+
+/**
+ * lpfc_eq_create - Create an Event Queue on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @eq: The queue structure to use to create the event queue.
+ * @imax: The maximum interrupt per second limit.
+ *
+ * This function creates an event queue, as detailed in @eq, on a port,
+ * described by @phba by sending an EQ_CREATE mailbox command to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @eq struct
+ * is used to get the entry count and entry size that are necessary to
+ * determine the number of pages to allocate and use for this queue. This
+ * function will send the EQ_CREATE mailbox command to the HBA to setup the
+ * event queue. This function is asynchronous and will wait for the mailbox
+ * command to finish before continuing.
+ *
+ * On success this function will return a zero. If unable to allocate enough
+ * memory this function will return -ENOMEM. If the queue create mailbox command
+ * fails this function will return -ENXIO.
+ **/
+int
+lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint32_t imax)
+{
+ struct lpfc_mbx_eq_create *eq_create;
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ struct lpfc_dmabuf *dmabuf;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ uint16_t dmult;
+ uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
+
+ /* sanity check on queue memory */
+ if (!eq)
+ return -ENODEV;
+ if (!phba->sli4_hba.pc_sli4_params.supported)
+ hw_page_size = SLI4_PAGE_SIZE;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_eq_create) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_EQ_CREATE,
+ length, LPFC_SLI4_MBX_EMBED);
+ eq_create = &mbox->u.mqe.un.eq_create;
+ shdr = (union lpfc_sli4_cfg_shdr *) &eq_create->header.cfg_shdr;
+ bf_set(lpfc_mbx_eq_create_num_pages, &eq_create->u.request,
+ eq->page_count);
+ bf_set(lpfc_eq_context_size, &eq_create->u.request.context,
+ LPFC_EQE_SIZE);
+ bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1);
+
+ /* Use version 2 of CREATE_EQ if eqav is set */
+ if (phba->sli4_hba.pc_sli4_params.eqav) {
+ bf_set(lpfc_mbox_hdr_version, &shdr->request,
+ LPFC_Q_CREATE_VERSION_2);
+ bf_set(lpfc_eq_context_autovalid, &eq_create->u.request.context,
+ phba->sli4_hba.pc_sli4_params.eqav);
+ }
+
+ /* don't setup delay multiplier using EQ_CREATE */
+ dmult = 0;
+ bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context,
+ dmult);
+ switch (eq->entry_count) {
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0360 Unsupported EQ count. (%d)\n",
+ eq->entry_count);
+ if (eq->entry_count < 256) {
+ status = -EINVAL;
+ goto out;
+ }
+ fallthrough; /* otherwise default to smallest count */
+ case 256:
+ bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+ LPFC_EQ_CNT_256);
+ break;
+ case 512:
+ bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+ LPFC_EQ_CNT_512);
+ break;
+ case 1024:
+ bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+ LPFC_EQ_CNT_1024);
+ break;
+ case 2048:
+ bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+ LPFC_EQ_CNT_2048);
+ break;
+ case 4096:
+ bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+ LPFC_EQ_CNT_4096);
+ break;
+ }
+ list_for_each_entry(dmabuf, &eq->page_list, list) {
+ memset(dmabuf->virt, 0, hw_page_size);
+ eq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+ putPaddrLow(dmabuf->phys);
+ eq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ }
+ mbox->vport = phba->pport;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ mbox->ctx_buf = NULL;
+ mbox->ctx_ndlp = NULL;
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2500 EQ_CREATE mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ }
+ eq->type = LPFC_EQ;
+ eq->subtype = LPFC_NONE;
+ eq->queue_id = bf_get(lpfc_mbx_eq_create_q_id, &eq_create->u.response);
+ if (eq->queue_id == 0xFFFF)
+ status = -ENXIO;
+ eq->host_index = 0;
+ eq->notify_interval = LPFC_EQ_NOTIFY_INTRVL;
+ eq->max_proc_limit = LPFC_EQ_MAX_PROC_LIMIT;
+out:
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return status;
+}
+
+static int lpfc_cq_poll_hdler(struct irq_poll *iop, int budget)
+{
+ struct lpfc_queue *cq = container_of(iop, struct lpfc_queue, iop);
+
+ __lpfc_sli4_hba_process_cq(cq, LPFC_IRQ_POLL);
+
+ return 1;
+}
+
+/**
+ * lpfc_cq_create - Create a Completion Queue on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @cq: The queue structure to use to create the completion queue.
+ * @eq: The event queue to bind this completion queue to.
+ * @type: Type of queue (EQ, GCQ, MCQ, WCQ, etc).
+ * @subtype: Functional purpose of the queue (MBOX, IO, ELS, NVMET, etc).
+ *
+ * This function creates a completion queue, as detailed in @wq, on a port,
+ * described by @phba by sending a CQ_CREATE mailbox command to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @cq struct
+ * is used to get the entry count and entry size that are necessary to
+ * determine the number of pages to allocate and use for this queue. The @eq
+ * is used to indicate which event queue to bind this completion queue to. This
+ * function will send the CQ_CREATE mailbox command to the HBA to setup the
+ * completion queue. This function is asynchronous and will wait for the mailbox
+ * command to finish before continuing.
+ *
+ * On success this function will return a zero. If unable to allocate enough
+ * memory this function will return -ENOMEM. If the queue create mailbox command
+ * fails this function will return -ENXIO.
+ **/
+int
+lpfc_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq,
+ struct lpfc_queue *eq, uint32_t type, uint32_t subtype)
+{
+ struct lpfc_mbx_cq_create *cq_create;
+ struct lpfc_dmabuf *dmabuf;
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ /* sanity check on queue memory */
+ if (!cq || !eq)
+ return -ENODEV;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_cq_create) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_CQ_CREATE,
+ length, LPFC_SLI4_MBX_EMBED);
+ cq_create = &mbox->u.mqe.un.cq_create;
+ shdr = (union lpfc_sli4_cfg_shdr *) &cq_create->header.cfg_shdr;
+ bf_set(lpfc_mbx_cq_create_num_pages, &cq_create->u.request,
+ cq->page_count);
+ bf_set(lpfc_cq_context_event, &cq_create->u.request.context, 1);
+ bf_set(lpfc_cq_context_valid, &cq_create->u.request.context, 1);
+ bf_set(lpfc_mbox_hdr_version, &shdr->request,
+ phba->sli4_hba.pc_sli4_params.cqv);
+ if (phba->sli4_hba.pc_sli4_params.cqv == LPFC_Q_CREATE_VERSION_2) {
+ bf_set(lpfc_mbx_cq_create_page_size, &cq_create->u.request,
+ (cq->page_size / SLI4_PAGE_SIZE));
+ bf_set(lpfc_cq_eq_id_2, &cq_create->u.request.context,
+ eq->queue_id);
+ bf_set(lpfc_cq_context_autovalid, &cq_create->u.request.context,
+ phba->sli4_hba.pc_sli4_params.cqav);
+ } else {
+ bf_set(lpfc_cq_eq_id, &cq_create->u.request.context,
+ eq->queue_id);
+ }
+ switch (cq->entry_count) {
+ case 2048:
+ case 4096:
+ if (phba->sli4_hba.pc_sli4_params.cqv ==
+ LPFC_Q_CREATE_VERSION_2) {
+ cq_create->u.request.context.lpfc_cq_context_count =
+ cq->entry_count;
+ bf_set(lpfc_cq_context_count,
+ &cq_create->u.request.context,
+ LPFC_CQ_CNT_WORD7);
+ break;
+ }
+ fallthrough;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0361 Unsupported CQ count: "
+ "entry cnt %d sz %d pg cnt %d\n",
+ cq->entry_count, cq->entry_size,
+ cq->page_count);
+ if (cq->entry_count < 256) {
+ status = -EINVAL;
+ goto out;
+ }
+ fallthrough; /* otherwise default to smallest count */
+ case 256:
+ bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
+ LPFC_CQ_CNT_256);
+ break;
+ case 512:
+ bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
+ LPFC_CQ_CNT_512);
+ break;
+ case 1024:
+ bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
+ LPFC_CQ_CNT_1024);
+ break;
+ }
+ list_for_each_entry(dmabuf, &cq->page_list, list) {
+ memset(dmabuf->virt, 0, cq->page_size);
+ cq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+ putPaddrLow(dmabuf->phys);
+ cq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ }
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2501 CQ_CREATE mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ goto out;
+ }
+ cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
+ if (cq->queue_id == 0xFFFF) {
+ status = -ENXIO;
+ goto out;
+ }
+ /* link the cq onto the parent eq child list */
+ list_add_tail(&cq->list, &eq->child_list);
+ /* Set up completion queue's type and subtype */
+ cq->type = type;
+ cq->subtype = subtype;
+ cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
+ cq->assoc_qid = eq->queue_id;
+ cq->assoc_qp = eq;
+ cq->host_index = 0;
+ cq->notify_interval = LPFC_CQ_NOTIFY_INTRVL;
+ cq->max_proc_limit = min(phba->cfg_cq_max_proc_limit, cq->entry_count);
+
+ if (cq->queue_id > phba->sli4_hba.cq_max)
+ phba->sli4_hba.cq_max = cq->queue_id;
+
+ irq_poll_init(&cq->iop, LPFC_IRQ_POLL_WEIGHT, lpfc_cq_poll_hdler);
+out:
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return status;
+}
+
+/**
+ * lpfc_cq_create_set - Create a set of Completion Queues on the HBA for MRQ
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @cqp: The queue structure array to use to create the completion queues.
+ * @hdwq: The hardware queue array with the EQ to bind completion queues to.
+ * @type: Type of queue (EQ, GCQ, MCQ, WCQ, etc).
+ * @subtype: Functional purpose of the queue (MBOX, IO, ELS, NVMET, etc).
+ *
+ * This function creates a set of completion queue, s to support MRQ
+ * as detailed in @cqp, on a port,
+ * described by @phba by sending a CREATE_CQ_SET mailbox command to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @cq struct
+ * is used to get the entry count and entry size that are necessary to
+ * determine the number of pages to allocate and use for this queue. The @eq
+ * is used to indicate which event queue to bind this completion queue to. This
+ * function will send the CREATE_CQ_SET mailbox command to the HBA to setup the
+ * completion queue. This function is asynchronous and will wait for the mailbox
+ * command to finish before continuing.
+ *
+ * On success this function will return a zero. If unable to allocate enough
+ * memory this function will return -ENOMEM. If the queue create mailbox command
+ * fails this function will return -ENXIO.
+ **/
+int
+lpfc_cq_create_set(struct lpfc_hba *phba, struct lpfc_queue **cqp,
+ struct lpfc_sli4_hdw_queue *hdwq, uint32_t type,
+ uint32_t subtype)
+{
+ struct lpfc_queue *cq;
+ struct lpfc_queue *eq;
+ struct lpfc_mbx_cq_create_set *cq_set;
+ struct lpfc_dmabuf *dmabuf;
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, alloclen, status = 0;
+ int cnt, idx, numcq, page_idx = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
+
+ /* sanity check on queue memory */
+ numcq = phba->cfg_nvmet_mrq;
+ if (!cqp || !hdwq || !numcq)
+ return -ENODEV;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+
+ length = sizeof(struct lpfc_mbx_cq_create_set);
+ length += ((numcq * cqp[0]->page_count) *
+ sizeof(struct dma_address));
+ alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_CQ_CREATE_SET, length,
+ LPFC_SLI4_MBX_NEMBED);
+ if (alloclen < length) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3098 Allocated DMA memory size (%d) is "
+ "less than the requested DMA memory size "
+ "(%d)\n", alloclen, length);
+ status = -ENOMEM;
+ goto out;
+ }
+ cq_set = mbox->sge_array->addr[0];
+ shdr = (union lpfc_sli4_cfg_shdr *)&cq_set->cfg_shdr;
+ bf_set(lpfc_mbox_hdr_version, &shdr->request, 0);
+
+ for (idx = 0; idx < numcq; idx++) {
+ cq = cqp[idx];
+ eq = hdwq[idx].hba_eq;
+ if (!cq || !eq) {
+ status = -ENOMEM;
+ goto out;
+ }
+ if (!phba->sli4_hba.pc_sli4_params.supported)
+ hw_page_size = cq->page_size;
+
+ switch (idx) {
+ case 0:
+ bf_set(lpfc_mbx_cq_create_set_page_size,
+ &cq_set->u.request,
+ (hw_page_size / SLI4_PAGE_SIZE));
+ bf_set(lpfc_mbx_cq_create_set_num_pages,
+ &cq_set->u.request, cq->page_count);
+ bf_set(lpfc_mbx_cq_create_set_evt,
+ &cq_set->u.request, 1);
+ bf_set(lpfc_mbx_cq_create_set_valid,
+ &cq_set->u.request, 1);
+ bf_set(lpfc_mbx_cq_create_set_cqe_size,
+ &cq_set->u.request, 0);
+ bf_set(lpfc_mbx_cq_create_set_num_cq,
+ &cq_set->u.request, numcq);
+ bf_set(lpfc_mbx_cq_create_set_autovalid,
+ &cq_set->u.request,
+ phba->sli4_hba.pc_sli4_params.cqav);
+ switch (cq->entry_count) {
+ case 2048:
+ case 4096:
+ if (phba->sli4_hba.pc_sli4_params.cqv ==
+ LPFC_Q_CREATE_VERSION_2) {
+ bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
+ &cq_set->u.request,
+ cq->entry_count);
+ bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
+ &cq_set->u.request,
+ LPFC_CQ_CNT_WORD7);
+ break;
+ }
+ fallthrough;
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3118 Bad CQ count. (%d)\n",
+ cq->entry_count);
+ if (cq->entry_count < 256) {
+ status = -EINVAL;
+ goto out;
+ }
+ fallthrough; /* otherwise default to smallest */
+ case 256:
+ bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
+ &cq_set->u.request, LPFC_CQ_CNT_256);
+ break;
+ case 512:
+ bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
+ &cq_set->u.request, LPFC_CQ_CNT_512);
+ break;
+ case 1024:
+ bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
+ &cq_set->u.request, LPFC_CQ_CNT_1024);
+ break;
+ }
+ bf_set(lpfc_mbx_cq_create_set_eq_id0,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 1:
+ bf_set(lpfc_mbx_cq_create_set_eq_id1,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 2:
+ bf_set(lpfc_mbx_cq_create_set_eq_id2,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 3:
+ bf_set(lpfc_mbx_cq_create_set_eq_id3,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 4:
+ bf_set(lpfc_mbx_cq_create_set_eq_id4,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 5:
+ bf_set(lpfc_mbx_cq_create_set_eq_id5,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 6:
+ bf_set(lpfc_mbx_cq_create_set_eq_id6,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 7:
+ bf_set(lpfc_mbx_cq_create_set_eq_id7,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 8:
+ bf_set(lpfc_mbx_cq_create_set_eq_id8,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 9:
+ bf_set(lpfc_mbx_cq_create_set_eq_id9,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 10:
+ bf_set(lpfc_mbx_cq_create_set_eq_id10,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 11:
+ bf_set(lpfc_mbx_cq_create_set_eq_id11,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 12:
+ bf_set(lpfc_mbx_cq_create_set_eq_id12,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 13:
+ bf_set(lpfc_mbx_cq_create_set_eq_id13,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 14:
+ bf_set(lpfc_mbx_cq_create_set_eq_id14,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ case 15:
+ bf_set(lpfc_mbx_cq_create_set_eq_id15,
+ &cq_set->u.request, eq->queue_id);
+ break;
+ }
+
+ /* link the cq onto the parent eq child list */
+ list_add_tail(&cq->list, &eq->child_list);
+ /* Set up completion queue's type and subtype */
+ cq->type = type;
+ cq->subtype = subtype;
+ cq->assoc_qid = eq->queue_id;
+ cq->assoc_qp = eq;
+ cq->host_index = 0;
+ cq->notify_interval = LPFC_CQ_NOTIFY_INTRVL;
+ cq->max_proc_limit = min(phba->cfg_cq_max_proc_limit,
+ cq->entry_count);
+ cq->chann = idx;
+
+ rc = 0;
+ list_for_each_entry(dmabuf, &cq->page_list, list) {
+ memset(dmabuf->virt, 0, hw_page_size);
+ cnt = page_idx + dmabuf->buffer_tag;
+ cq_set->u.request.page[cnt].addr_lo =
+ putPaddrLow(dmabuf->phys);
+ cq_set->u.request.page[cnt].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ rc++;
+ }
+ page_idx += rc;
+ }
+
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3119 CQ_CREATE_SET mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ goto out;
+ }
+ rc = bf_get(lpfc_mbx_cq_create_set_base_id, &cq_set->u.response);
+ if (rc == 0xFFFF) {
+ status = -ENXIO;
+ goto out;
+ }
+
+ for (idx = 0; idx < numcq; idx++) {
+ cq = cqp[idx];
+ cq->queue_id = rc + idx;
+ if (cq->queue_id > phba->sli4_hba.cq_max)
+ phba->sli4_hba.cq_max = cq->queue_id;
+ }
+
+out:
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ return status;
+}
+
+/**
+ * lpfc_mq_create_fb_init - Send MCC_CREATE without async events registration
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @mq: The queue structure to use to create the mailbox queue.
+ * @mbox: An allocated pointer to type LPFC_MBOXQ_t
+ * @cq: The completion queue to associate with this cq.
+ *
+ * This function provides failback (fb) functionality when the
+ * mq_create_ext fails on older FW generations. It's purpose is identical
+ * to mq_create_ext otherwise.
+ *
+ * This routine cannot fail as all attributes were previously accessed and
+ * initialized in mq_create_ext.
+ **/
+static void
+lpfc_mq_create_fb_init(struct lpfc_hba *phba, struct lpfc_queue *mq,
+ LPFC_MBOXQ_t *mbox, struct lpfc_queue *cq)
+{
+ struct lpfc_mbx_mq_create *mq_create;
+ struct lpfc_dmabuf *dmabuf;
+ int length;
+
+ length = (sizeof(struct lpfc_mbx_mq_create) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_MQ_CREATE,
+ length, LPFC_SLI4_MBX_EMBED);
+ mq_create = &mbox->u.mqe.un.mq_create;
+ bf_set(lpfc_mbx_mq_create_num_pages, &mq_create->u.request,
+ mq->page_count);
+ bf_set(lpfc_mq_context_cq_id, &mq_create->u.request.context,
+ cq->queue_id);
+ bf_set(lpfc_mq_context_valid, &mq_create->u.request.context, 1);
+ switch (mq->entry_count) {
+ case 16:
+ bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
+ LPFC_MQ_RING_SIZE_16);
+ break;
+ case 32:
+ bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
+ LPFC_MQ_RING_SIZE_32);
+ break;
+ case 64:
+ bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
+ LPFC_MQ_RING_SIZE_64);
+ break;
+ case 128:
+ bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
+ LPFC_MQ_RING_SIZE_128);
+ break;
+ }
+ list_for_each_entry(dmabuf, &mq->page_list, list) {
+ mq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+ putPaddrLow(dmabuf->phys);
+ mq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ }
+}
+
+/**
+ * lpfc_mq_create - Create a mailbox Queue on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @mq: The queue structure to use to create the mailbox queue.
+ * @cq: The completion queue to associate with this cq.
+ * @subtype: The queue's subtype.
+ *
+ * This function creates a mailbox queue, as detailed in @mq, on a port,
+ * described by @phba by sending a MQ_CREATE mailbox command to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @cq struct
+ * is used to get the entry count and entry size that are necessary to
+ * determine the number of pages to allocate and use for this queue. This
+ * function will send the MQ_CREATE mailbox command to the HBA to setup the
+ * mailbox queue. This function is asynchronous and will wait for the mailbox
+ * command to finish before continuing.
+ *
+ * On success this function will return a zero. If unable to allocate enough
+ * memory this function will return -ENOMEM. If the queue create mailbox command
+ * fails this function will return -ENXIO.
+ **/
+int32_t
+lpfc_mq_create(struct lpfc_hba *phba, struct lpfc_queue *mq,
+ struct lpfc_queue *cq, uint32_t subtype)
+{
+ struct lpfc_mbx_mq_create *mq_create;
+ struct lpfc_mbx_mq_create_ext *mq_create_ext;
+ struct lpfc_dmabuf *dmabuf;
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
+
+ /* sanity check on queue memory */
+ if (!mq || !cq)
+ return -ENODEV;
+ if (!phba->sli4_hba.pc_sli4_params.supported)
+ hw_page_size = SLI4_PAGE_SIZE;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_mq_create_ext) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_MQ_CREATE_EXT,
+ length, LPFC_SLI4_MBX_EMBED);
+
+ mq_create_ext = &mbox->u.mqe.un.mq_create_ext;
+ shdr = (union lpfc_sli4_cfg_shdr *) &mq_create_ext->header.cfg_shdr;
+ bf_set(lpfc_mbx_mq_create_ext_num_pages,
+ &mq_create_ext->u.request, mq->page_count);
+ bf_set(lpfc_mbx_mq_create_ext_async_evt_link,
+ &mq_create_ext->u.request, 1);
+ bf_set(lpfc_mbx_mq_create_ext_async_evt_fip,
+ &mq_create_ext->u.request, 1);
+ bf_set(lpfc_mbx_mq_create_ext_async_evt_group5,
+ &mq_create_ext->u.request, 1);
+ bf_set(lpfc_mbx_mq_create_ext_async_evt_fc,
+ &mq_create_ext->u.request, 1);
+ bf_set(lpfc_mbx_mq_create_ext_async_evt_sli,
+ &mq_create_ext->u.request, 1);
+ bf_set(lpfc_mq_context_valid, &mq_create_ext->u.request.context, 1);
+ bf_set(lpfc_mbox_hdr_version, &shdr->request,
+ phba->sli4_hba.pc_sli4_params.mqv);
+ if (phba->sli4_hba.pc_sli4_params.mqv == LPFC_Q_CREATE_VERSION_1)
+ bf_set(lpfc_mbx_mq_create_ext_cq_id, &mq_create_ext->u.request,
+ cq->queue_id);
+ else
+ bf_set(lpfc_mq_context_cq_id, &mq_create_ext->u.request.context,
+ cq->queue_id);
+ switch (mq->entry_count) {
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0362 Unsupported MQ count. (%d)\n",
+ mq->entry_count);
+ if (mq->entry_count < 16) {
+ status = -EINVAL;
+ goto out;
+ }
+ fallthrough; /* otherwise default to smallest count */
+ case 16:
+ bf_set(lpfc_mq_context_ring_size,
+ &mq_create_ext->u.request.context,
+ LPFC_MQ_RING_SIZE_16);
+ break;
+ case 32:
+ bf_set(lpfc_mq_context_ring_size,
+ &mq_create_ext->u.request.context,
+ LPFC_MQ_RING_SIZE_32);
+ break;
+ case 64:
+ bf_set(lpfc_mq_context_ring_size,
+ &mq_create_ext->u.request.context,
+ LPFC_MQ_RING_SIZE_64);
+ break;
+ case 128:
+ bf_set(lpfc_mq_context_ring_size,
+ &mq_create_ext->u.request.context,
+ LPFC_MQ_RING_SIZE_128);
+ break;
+ }
+ list_for_each_entry(dmabuf, &mq->page_list, list) {
+ memset(dmabuf->virt, 0, hw_page_size);
+ mq_create_ext->u.request.page[dmabuf->buffer_tag].addr_lo =
+ putPaddrLow(dmabuf->phys);
+ mq_create_ext->u.request.page[dmabuf->buffer_tag].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ }
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id,
+ &mq_create_ext->u.response);
+ if (rc != MBX_SUCCESS) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "2795 MQ_CREATE_EXT failed with "
+ "status x%x. Failback to MQ_CREATE.\n",
+ rc);
+ lpfc_mq_create_fb_init(phba, mq, mbox, cq);
+ mq_create = &mbox->u.mqe.un.mq_create;
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ shdr = (union lpfc_sli4_cfg_shdr *) &mq_create->header.cfg_shdr;
+ mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id,
+ &mq_create->u.response);
+ }
+
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2502 MQ_CREATE mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ goto out;
+ }
+ if (mq->queue_id == 0xFFFF) {
+ status = -ENXIO;
+ goto out;
+ }
+ mq->type = LPFC_MQ;
+ mq->assoc_qid = cq->queue_id;
+ mq->subtype = subtype;
+ mq->host_index = 0;
+ mq->hba_index = 0;
+
+ /* link the mq onto the parent cq child list */
+ list_add_tail(&mq->list, &cq->child_list);
+out:
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return status;
+}
+
+/**
+ * lpfc_wq_create - Create a Work Queue on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @wq: The queue structure to use to create the work queue.
+ * @cq: The completion queue to bind this work queue to.
+ * @subtype: The subtype of the work queue indicating its functionality.
+ *
+ * This function creates a work queue, as detailed in @wq, on a port, described
+ * by @phba by sending a WQ_CREATE mailbox command to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @wq struct
+ * is used to get the entry count and entry size that are necessary to
+ * determine the number of pages to allocate and use for this queue. The @cq
+ * is used to indicate which completion queue to bind this work queue to. This
+ * function will send the WQ_CREATE mailbox command to the HBA to setup the
+ * work queue. This function is asynchronous and will wait for the mailbox
+ * command to finish before continuing.
+ *
+ * On success this function will return a zero. If unable to allocate enough
+ * memory this function will return -ENOMEM. If the queue create mailbox command
+ * fails this function will return -ENXIO.
+ **/
+int
+lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq,
+ struct lpfc_queue *cq, uint32_t subtype)
+{
+ struct lpfc_mbx_wq_create *wq_create;
+ struct lpfc_dmabuf *dmabuf;
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
+ struct dma_address *page;
+ void __iomem *bar_memmap_p;
+ uint32_t db_offset;
+ uint16_t pci_barset;
+ uint8_t dpp_barset;
+ uint32_t dpp_offset;
+ uint8_t wq_create_version;
+#ifdef CONFIG_X86
+ unsigned long pg_addr;
+#endif
+
+ /* sanity check on queue memory */
+ if (!wq || !cq)
+ return -ENODEV;
+ if (!phba->sli4_hba.pc_sli4_params.supported)
+ hw_page_size = wq->page_size;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_wq_create) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_WQ_CREATE,
+ length, LPFC_SLI4_MBX_EMBED);
+ wq_create = &mbox->u.mqe.un.wq_create;
+ shdr = (union lpfc_sli4_cfg_shdr *) &wq_create->header.cfg_shdr;
+ bf_set(lpfc_mbx_wq_create_num_pages, &wq_create->u.request,
+ wq->page_count);
+ bf_set(lpfc_mbx_wq_create_cq_id, &wq_create->u.request,
+ cq->queue_id);
+
+ /* wqv is the earliest version supported, NOT the latest */
+ bf_set(lpfc_mbox_hdr_version, &shdr->request,
+ phba->sli4_hba.pc_sli4_params.wqv);
+
+ if ((phba->sli4_hba.pc_sli4_params.wqsize & LPFC_WQ_SZ128_SUPPORT) ||
+ (wq->page_size > SLI4_PAGE_SIZE))
+ wq_create_version = LPFC_Q_CREATE_VERSION_1;
+ else
+ wq_create_version = LPFC_Q_CREATE_VERSION_0;
+
+ switch (wq_create_version) {
+ case LPFC_Q_CREATE_VERSION_1:
+ bf_set(lpfc_mbx_wq_create_wqe_count, &wq_create->u.request_1,
+ wq->entry_count);
+ bf_set(lpfc_mbox_hdr_version, &shdr->request,
+ LPFC_Q_CREATE_VERSION_1);
+
+ switch (wq->entry_size) {
+ default:
+ case 64:
+ bf_set(lpfc_mbx_wq_create_wqe_size,
+ &wq_create->u.request_1,
+ LPFC_WQ_WQE_SIZE_64);
+ break;
+ case 128:
+ bf_set(lpfc_mbx_wq_create_wqe_size,
+ &wq_create->u.request_1,
+ LPFC_WQ_WQE_SIZE_128);
+ break;
+ }
+ /* Request DPP by default */
+ bf_set(lpfc_mbx_wq_create_dpp_req, &wq_create->u.request_1, 1);
+ bf_set(lpfc_mbx_wq_create_page_size,
+ &wq_create->u.request_1,
+ (wq->page_size / SLI4_PAGE_SIZE));
+ page = wq_create->u.request_1.page;
+ break;
+ default:
+ page = wq_create->u.request.page;
+ break;
+ }
+
+ list_for_each_entry(dmabuf, &wq->page_list, list) {
+ memset(dmabuf->virt, 0, hw_page_size);
+ page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys);
+ page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys);
+ }
+
+ if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE)
+ bf_set(lpfc_mbx_wq_create_dua, &wq_create->u.request, 1);
+
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2503 WQ_CREATE mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ goto out;
+ }
+
+ if (wq_create_version == LPFC_Q_CREATE_VERSION_0)
+ wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id,
+ &wq_create->u.response);
+ else
+ wq->queue_id = bf_get(lpfc_mbx_wq_create_v1_q_id,
+ &wq_create->u.response_1);
+
+ if (wq->queue_id == 0xFFFF) {
+ status = -ENXIO;
+ goto out;
+ }
+
+ wq->db_format = LPFC_DB_LIST_FORMAT;
+ if (wq_create_version == LPFC_Q_CREATE_VERSION_0) {
+ if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) {
+ wq->db_format = bf_get(lpfc_mbx_wq_create_db_format,
+ &wq_create->u.response);
+ if ((wq->db_format != LPFC_DB_LIST_FORMAT) &&
+ (wq->db_format != LPFC_DB_RING_FORMAT)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3265 WQ[%d] doorbell format "
+ "not supported: x%x\n",
+ wq->queue_id, wq->db_format);
+ status = -EINVAL;
+ goto out;
+ }
+ pci_barset = bf_get(lpfc_mbx_wq_create_bar_set,
+ &wq_create->u.response);
+ bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba,
+ pci_barset);
+ if (!bar_memmap_p) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3263 WQ[%d] failed to memmap "
+ "pci barset:x%x\n",
+ wq->queue_id, pci_barset);
+ status = -ENOMEM;
+ goto out;
+ }
+ db_offset = wq_create->u.response.doorbell_offset;
+ if ((db_offset != LPFC_ULP0_WQ_DOORBELL) &&
+ (db_offset != LPFC_ULP1_WQ_DOORBELL)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3252 WQ[%d] doorbell offset "
+ "not supported: x%x\n",
+ wq->queue_id, db_offset);
+ status = -EINVAL;
+ goto out;
+ }
+ wq->db_regaddr = bar_memmap_p + db_offset;
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "3264 WQ[%d]: barset:x%x, offset:x%x, "
+ "format:x%x\n", wq->queue_id,
+ pci_barset, db_offset, wq->db_format);
+ } else
+ wq->db_regaddr = phba->sli4_hba.WQDBregaddr;
+ } else {
+ /* Check if DPP was honored by the firmware */
+ wq->dpp_enable = bf_get(lpfc_mbx_wq_create_dpp_rsp,
+ &wq_create->u.response_1);
+ if (wq->dpp_enable) {
+ pci_barset = bf_get(lpfc_mbx_wq_create_v1_bar_set,
+ &wq_create->u.response_1);
+ bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba,
+ pci_barset);
+ if (!bar_memmap_p) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3267 WQ[%d] failed to memmap "
+ "pci barset:x%x\n",
+ wq->queue_id, pci_barset);
+ status = -ENOMEM;
+ goto out;
+ }
+ db_offset = wq_create->u.response_1.doorbell_offset;
+ wq->db_regaddr = bar_memmap_p + db_offset;
+ wq->dpp_id = bf_get(lpfc_mbx_wq_create_dpp_id,
+ &wq_create->u.response_1);
+ dpp_barset = bf_get(lpfc_mbx_wq_create_dpp_bar,
+ &wq_create->u.response_1);
+ bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba,
+ dpp_barset);
+ if (!bar_memmap_p) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3268 WQ[%d] failed to memmap "
+ "pci barset:x%x\n",
+ wq->queue_id, dpp_barset);
+ status = -ENOMEM;
+ goto out;
+ }
+ dpp_offset = wq_create->u.response_1.dpp_offset;
+ wq->dpp_regaddr = bar_memmap_p + dpp_offset;
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "3271 WQ[%d]: barset:x%x, offset:x%x, "
+ "dpp_id:x%x dpp_barset:x%x "
+ "dpp_offset:x%x\n",
+ wq->queue_id, pci_barset, db_offset,
+ wq->dpp_id, dpp_barset, dpp_offset);
+
+#ifdef CONFIG_X86
+ /* Enable combined writes for DPP aperture */
+ pg_addr = (unsigned long)(wq->dpp_regaddr) & PAGE_MASK;
+ rc = set_memory_wc(pg_addr, 1);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "3272 Cannot setup Combined "
+ "Write on WQ[%d] - disable DPP\n",
+ wq->queue_id);
+ phba->cfg_enable_dpp = 0;
+ }
+#else
+ phba->cfg_enable_dpp = 0;
+#endif
+ } else
+ wq->db_regaddr = phba->sli4_hba.WQDBregaddr;
+ }
+ wq->pring = kzalloc(sizeof(struct lpfc_sli_ring), GFP_KERNEL);
+ if (wq->pring == NULL) {
+ status = -ENOMEM;
+ goto out;
+ }
+ wq->type = LPFC_WQ;
+ wq->assoc_qid = cq->queue_id;
+ wq->subtype = subtype;
+ wq->host_index = 0;
+ wq->hba_index = 0;
+ wq->notify_interval = LPFC_WQ_NOTIFY_INTRVL;
+
+ /* link the wq onto the parent cq child list */
+ list_add_tail(&wq->list, &cq->child_list);
+out:
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return status;
+}
+
+/**
+ * lpfc_rq_create - Create a Receive Queue on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @hrq: The queue structure to use to create the header receive queue.
+ * @drq: The queue structure to use to create the data receive queue.
+ * @cq: The completion queue to bind this work queue to.
+ * @subtype: The subtype of the work queue indicating its functionality.
+ *
+ * This function creates a receive buffer queue pair , as detailed in @hrq and
+ * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command
+ * to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq
+ * struct is used to get the entry count that is necessary to determine the
+ * number of pages to use for this queue. The @cq is used to indicate which
+ * completion queue to bind received buffers that are posted to these queues to.
+ * This function will send the RQ_CREATE mailbox command to the HBA to setup the
+ * receive queue pair. This function is asynchronous and will wait for the
+ * mailbox command to finish before continuing.
+ *
+ * On success this function will return a zero. If unable to allocate enough
+ * memory this function will return -ENOMEM. If the queue create mailbox command
+ * fails this function will return -ENXIO.
+ **/
+int
+lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq,
+ struct lpfc_queue *drq, struct lpfc_queue *cq, uint32_t subtype)
+{
+ struct lpfc_mbx_rq_create *rq_create;
+ struct lpfc_dmabuf *dmabuf;
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
+ void __iomem *bar_memmap_p;
+ uint32_t db_offset;
+ uint16_t pci_barset;
+
+ /* sanity check on queue memory */
+ if (!hrq || !drq || !cq)
+ return -ENODEV;
+ if (!phba->sli4_hba.pc_sli4_params.supported)
+ hw_page_size = SLI4_PAGE_SIZE;
+
+ if (hrq->entry_count != drq->entry_count)
+ return -EINVAL;
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_rq_create) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
+ length, LPFC_SLI4_MBX_EMBED);
+ rq_create = &mbox->u.mqe.un.rq_create;
+ shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
+ bf_set(lpfc_mbox_hdr_version, &shdr->request,
+ phba->sli4_hba.pc_sli4_params.rqv);
+ if (phba->sli4_hba.pc_sli4_params.rqv == LPFC_Q_CREATE_VERSION_1) {
+ bf_set(lpfc_rq_context_rqe_count_1,
+ &rq_create->u.request.context,
+ hrq->entry_count);
+ rq_create->u.request.context.buffer_size = LPFC_HDR_BUF_SIZE;
+ bf_set(lpfc_rq_context_rqe_size,
+ &rq_create->u.request.context,
+ LPFC_RQE_SIZE_8);
+ bf_set(lpfc_rq_context_page_size,
+ &rq_create->u.request.context,
+ LPFC_RQ_PAGE_SIZE_4096);
+ } else {
+ switch (hrq->entry_count) {
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2535 Unsupported RQ count. (%d)\n",
+ hrq->entry_count);
+ if (hrq->entry_count < 512) {
+ status = -EINVAL;
+ goto out;
+ }
+ fallthrough; /* otherwise default to smallest count */
+ case 512:
+ bf_set(lpfc_rq_context_rqe_count,
+ &rq_create->u.request.context,
+ LPFC_RQ_RING_SIZE_512);
+ break;
+ case 1024:
+ bf_set(lpfc_rq_context_rqe_count,
+ &rq_create->u.request.context,
+ LPFC_RQ_RING_SIZE_1024);
+ break;
+ case 2048:
+ bf_set(lpfc_rq_context_rqe_count,
+ &rq_create->u.request.context,
+ LPFC_RQ_RING_SIZE_2048);
+ break;
+ case 4096:
+ bf_set(lpfc_rq_context_rqe_count,
+ &rq_create->u.request.context,
+ LPFC_RQ_RING_SIZE_4096);
+ break;
+ }
+ bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
+ LPFC_HDR_BUF_SIZE);
+ }
+ bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
+ cq->queue_id);
+ bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
+ hrq->page_count);
+ list_for_each_entry(dmabuf, &hrq->page_list, list) {
+ memset(dmabuf->virt, 0, hw_page_size);
+ rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+ putPaddrLow(dmabuf->phys);
+ rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ }
+ if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE)
+ bf_set(lpfc_mbx_rq_create_dua, &rq_create->u.request, 1);
+
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2504 RQ_CREATE mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ goto out;
+ }
+ hrq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
+ if (hrq->queue_id == 0xFFFF) {
+ status = -ENXIO;
+ goto out;
+ }
+
+ if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) {
+ hrq->db_format = bf_get(lpfc_mbx_rq_create_db_format,
+ &rq_create->u.response);
+ if ((hrq->db_format != LPFC_DB_LIST_FORMAT) &&
+ (hrq->db_format != LPFC_DB_RING_FORMAT)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3262 RQ [%d] doorbell format not "
+ "supported: x%x\n", hrq->queue_id,
+ hrq->db_format);
+ status = -EINVAL;
+ goto out;
+ }
+
+ pci_barset = bf_get(lpfc_mbx_rq_create_bar_set,
+ &rq_create->u.response);
+ bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba, pci_barset);
+ if (!bar_memmap_p) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3269 RQ[%d] failed to memmap pci "
+ "barset:x%x\n", hrq->queue_id,
+ pci_barset);
+ status = -ENOMEM;
+ goto out;
+ }
+
+ db_offset = rq_create->u.response.doorbell_offset;
+ if ((db_offset != LPFC_ULP0_RQ_DOORBELL) &&
+ (db_offset != LPFC_ULP1_RQ_DOORBELL)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3270 RQ[%d] doorbell offset not "
+ "supported: x%x\n", hrq->queue_id,
+ db_offset);
+ status = -EINVAL;
+ goto out;
+ }
+ hrq->db_regaddr = bar_memmap_p + db_offset;
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "3266 RQ[qid:%d]: barset:x%x, offset:x%x, "
+ "format:x%x\n", hrq->queue_id, pci_barset,
+ db_offset, hrq->db_format);
+ } else {
+ hrq->db_format = LPFC_DB_RING_FORMAT;
+ hrq->db_regaddr = phba->sli4_hba.RQDBregaddr;
+ }
+ hrq->type = LPFC_HRQ;
+ hrq->assoc_qid = cq->queue_id;
+ hrq->subtype = subtype;
+ hrq->host_index = 0;
+ hrq->hba_index = 0;
+ hrq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
+
+ /* now create the data queue */
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
+ length, LPFC_SLI4_MBX_EMBED);
+ bf_set(lpfc_mbox_hdr_version, &shdr->request,
+ phba->sli4_hba.pc_sli4_params.rqv);
+ if (phba->sli4_hba.pc_sli4_params.rqv == LPFC_Q_CREATE_VERSION_1) {
+ bf_set(lpfc_rq_context_rqe_count_1,
+ &rq_create->u.request.context, hrq->entry_count);
+ if (subtype == LPFC_NVMET)
+ rq_create->u.request.context.buffer_size =
+ LPFC_NVMET_DATA_BUF_SIZE;
+ else
+ rq_create->u.request.context.buffer_size =
+ LPFC_DATA_BUF_SIZE;
+ bf_set(lpfc_rq_context_rqe_size, &rq_create->u.request.context,
+ LPFC_RQE_SIZE_8);
+ bf_set(lpfc_rq_context_page_size, &rq_create->u.request.context,
+ (PAGE_SIZE/SLI4_PAGE_SIZE));
+ } else {
+ switch (drq->entry_count) {
+ default:
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2536 Unsupported RQ count. (%d)\n",
+ drq->entry_count);
+ if (drq->entry_count < 512) {
+ status = -EINVAL;
+ goto out;
+ }
+ fallthrough; /* otherwise default to smallest count */
+ case 512:
+ bf_set(lpfc_rq_context_rqe_count,
+ &rq_create->u.request.context,
+ LPFC_RQ_RING_SIZE_512);
+ break;
+ case 1024:
+ bf_set(lpfc_rq_context_rqe_count,
+ &rq_create->u.request.context,
+ LPFC_RQ_RING_SIZE_1024);
+ break;
+ case 2048:
+ bf_set(lpfc_rq_context_rqe_count,
+ &rq_create->u.request.context,
+ LPFC_RQ_RING_SIZE_2048);
+ break;
+ case 4096:
+ bf_set(lpfc_rq_context_rqe_count,
+ &rq_create->u.request.context,
+ LPFC_RQ_RING_SIZE_4096);
+ break;
+ }
+ if (subtype == LPFC_NVMET)
+ bf_set(lpfc_rq_context_buf_size,
+ &rq_create->u.request.context,
+ LPFC_NVMET_DATA_BUF_SIZE);
+ else
+ bf_set(lpfc_rq_context_buf_size,
+ &rq_create->u.request.context,
+ LPFC_DATA_BUF_SIZE);
+ }
+ bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
+ cq->queue_id);
+ bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
+ drq->page_count);
+ list_for_each_entry(dmabuf, &drq->page_list, list) {
+ rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+ putPaddrLow(dmabuf->phys);
+ rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ }
+ if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE)
+ bf_set(lpfc_mbx_rq_create_dua, &rq_create->u.request, 1);
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ status = -ENXIO;
+ goto out;
+ }
+ drq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
+ if (drq->queue_id == 0xFFFF) {
+ status = -ENXIO;
+ goto out;
+ }
+ drq->type = LPFC_DRQ;
+ drq->assoc_qid = cq->queue_id;
+ drq->subtype = subtype;
+ drq->host_index = 0;
+ drq->hba_index = 0;
+ drq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
+
+ /* link the header and data RQs onto the parent cq child list */
+ list_add_tail(&hrq->list, &cq->child_list);
+ list_add_tail(&drq->list, &cq->child_list);
+
+out:
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return status;
+}
+
+/**
+ * lpfc_mrq_create - Create MRQ Receive Queues on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @hrqp: The queue structure array to use to create the header receive queues.
+ * @drqp: The queue structure array to use to create the data receive queues.
+ * @cqp: The completion queue array to bind these receive queues to.
+ * @subtype: Functional purpose of the queue (MBOX, IO, ELS, NVMET, etc).
+ *
+ * This function creates a receive buffer queue pair , as detailed in @hrq and
+ * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command
+ * to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq
+ * struct is used to get the entry count that is necessary to determine the
+ * number of pages to use for this queue. The @cq is used to indicate which
+ * completion queue to bind received buffers that are posted to these queues to.
+ * This function will send the RQ_CREATE mailbox command to the HBA to setup the
+ * receive queue pair. This function is asynchronous and will wait for the
+ * mailbox command to finish before continuing.
+ *
+ * On success this function will return a zero. If unable to allocate enough
+ * memory this function will return -ENOMEM. If the queue create mailbox command
+ * fails this function will return -ENXIO.
+ **/
+int
+lpfc_mrq_create(struct lpfc_hba *phba, struct lpfc_queue **hrqp,
+ struct lpfc_queue **drqp, struct lpfc_queue **cqp,
+ uint32_t subtype)
+{
+ struct lpfc_queue *hrq, *drq, *cq;
+ struct lpfc_mbx_rq_create_v2 *rq_create;
+ struct lpfc_dmabuf *dmabuf;
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, alloclen, status = 0;
+ int cnt, idx, numrq, page_idx = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
+
+ numrq = phba->cfg_nvmet_mrq;
+ /* sanity check on array memory */
+ if (!hrqp || !drqp || !cqp || !numrq)
+ return -ENODEV;
+ if (!phba->sli4_hba.pc_sli4_params.supported)
+ hw_page_size = SLI4_PAGE_SIZE;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+
+ length = sizeof(struct lpfc_mbx_rq_create_v2);
+ length += ((2 * numrq * hrqp[0]->page_count) *
+ sizeof(struct dma_address));
+
+ alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_RQ_CREATE, length,
+ LPFC_SLI4_MBX_NEMBED);
+ if (alloclen < length) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3099 Allocated DMA memory size (%d) is "
+ "less than the requested DMA memory size "
+ "(%d)\n", alloclen, length);
+ status = -ENOMEM;
+ goto out;
+ }
+
+
+
+ rq_create = mbox->sge_array->addr[0];
+ shdr = (union lpfc_sli4_cfg_shdr *)&rq_create->cfg_shdr;
+
+ bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_Q_CREATE_VERSION_2);
+ cnt = 0;
+
+ for (idx = 0; idx < numrq; idx++) {
+ hrq = hrqp[idx];
+ drq = drqp[idx];
+ cq = cqp[idx];
+
+ /* sanity check on queue memory */
+ if (!hrq || !drq || !cq) {
+ status = -ENODEV;
+ goto out;
+ }
+
+ if (hrq->entry_count != drq->entry_count) {
+ status = -EINVAL;
+ goto out;
+ }
+
+ if (idx == 0) {
+ bf_set(lpfc_mbx_rq_create_num_pages,
+ &rq_create->u.request,
+ hrq->page_count);
+ bf_set(lpfc_mbx_rq_create_rq_cnt,
+ &rq_create->u.request, (numrq * 2));
+ bf_set(lpfc_mbx_rq_create_dnb, &rq_create->u.request,
+ 1);
+ bf_set(lpfc_rq_context_base_cq,
+ &rq_create->u.request.context,
+ cq->queue_id);
+ bf_set(lpfc_rq_context_data_size,
+ &rq_create->u.request.context,
+ LPFC_NVMET_DATA_BUF_SIZE);
+ bf_set(lpfc_rq_context_hdr_size,
+ &rq_create->u.request.context,
+ LPFC_HDR_BUF_SIZE);
+ bf_set(lpfc_rq_context_rqe_count_1,
+ &rq_create->u.request.context,
+ hrq->entry_count);
+ bf_set(lpfc_rq_context_rqe_size,
+ &rq_create->u.request.context,
+ LPFC_RQE_SIZE_8);
+ bf_set(lpfc_rq_context_page_size,
+ &rq_create->u.request.context,
+ (PAGE_SIZE/SLI4_PAGE_SIZE));
+ }
+ rc = 0;
+ list_for_each_entry(dmabuf, &hrq->page_list, list) {
+ memset(dmabuf->virt, 0, hw_page_size);
+ cnt = page_idx + dmabuf->buffer_tag;
+ rq_create->u.request.page[cnt].addr_lo =
+ putPaddrLow(dmabuf->phys);
+ rq_create->u.request.page[cnt].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ rc++;
+ }
+ page_idx += rc;
+
+ rc = 0;
+ list_for_each_entry(dmabuf, &drq->page_list, list) {
+ memset(dmabuf->virt, 0, hw_page_size);
+ cnt = page_idx + dmabuf->buffer_tag;
+ rq_create->u.request.page[cnt].addr_lo =
+ putPaddrLow(dmabuf->phys);
+ rq_create->u.request.page[cnt].addr_hi =
+ putPaddrHigh(dmabuf->phys);
+ rc++;
+ }
+ page_idx += rc;
+
+ hrq->db_format = LPFC_DB_RING_FORMAT;
+ hrq->db_regaddr = phba->sli4_hba.RQDBregaddr;
+ hrq->type = LPFC_HRQ;
+ hrq->assoc_qid = cq->queue_id;
+ hrq->subtype = subtype;
+ hrq->host_index = 0;
+ hrq->hba_index = 0;
+ hrq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
+
+ drq->db_format = LPFC_DB_RING_FORMAT;
+ drq->db_regaddr = phba->sli4_hba.RQDBregaddr;
+ drq->type = LPFC_DRQ;
+ drq->assoc_qid = cq->queue_id;
+ drq->subtype = subtype;
+ drq->host_index = 0;
+ drq->hba_index = 0;
+ drq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
+
+ list_add_tail(&hrq->list, &cq->child_list);
+ list_add_tail(&drq->list, &cq->child_list);
+ }
+
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3120 RQ_CREATE mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ goto out;
+ }
+ rc = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
+ if (rc == 0xFFFF) {
+ status = -ENXIO;
+ goto out;
+ }
+
+ /* Initialize all RQs with associated queue id */
+ for (idx = 0; idx < numrq; idx++) {
+ hrq = hrqp[idx];
+ hrq->queue_id = rc + (2 * idx);
+ drq = drqp[idx];
+ drq->queue_id = rc + (2 * idx) + 1;
+ }
+
+out:
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ return status;
+}
+
+/**
+ * lpfc_eq_destroy - Destroy an event Queue on the HBA
+ * @phba: HBA structure that indicates port to destroy a queue on.
+ * @eq: The queue structure associated with the queue to destroy.
+ *
+ * This function destroys a queue, as detailed in @eq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @eq struct is used to get the queue ID of the queue to destroy.
+ *
+ * On success this function will return a zero. If the queue destroy mailbox
+ * command fails this function will return -ENXIO.
+ **/
+int
+lpfc_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq)
+{
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ /* sanity check on queue memory */
+ if (!eq)
+ return -ENODEV;
+
+ mbox = mempool_alloc(eq->phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_eq_destroy) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_EQ_DESTROY,
+ length, LPFC_SLI4_MBX_EMBED);
+ bf_set(lpfc_mbx_eq_destroy_q_id, &mbox->u.mqe.un.eq_destroy.u.request,
+ eq->queue_id);
+ mbox->vport = eq->phba->pport;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+
+ rc = lpfc_sli_issue_mbox(eq->phba, mbox, MBX_POLL);
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &mbox->u.mqe.un.eq_destroy.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2505 EQ_DESTROY mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ }
+
+ /* Remove eq from any list */
+ list_del_init(&eq->list);
+ mempool_free(mbox, eq->phba->mbox_mem_pool);
+ return status;
+}
+
+/**
+ * lpfc_cq_destroy - Destroy a Completion Queue on the HBA
+ * @phba: HBA structure that indicates port to destroy a queue on.
+ * @cq: The queue structure associated with the queue to destroy.
+ *
+ * This function destroys a queue, as detailed in @cq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @cq struct is used to get the queue ID of the queue to destroy.
+ *
+ * On success this function will return a zero. If the queue destroy mailbox
+ * command fails this function will return -ENXIO.
+ **/
+int
+lpfc_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq)
+{
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ /* sanity check on queue memory */
+ if (!cq)
+ return -ENODEV;
+ mbox = mempool_alloc(cq->phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_cq_destroy) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_CQ_DESTROY,
+ length, LPFC_SLI4_MBX_EMBED);
+ bf_set(lpfc_mbx_cq_destroy_q_id, &mbox->u.mqe.un.cq_destroy.u.request,
+ cq->queue_id);
+ mbox->vport = cq->phba->pport;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ rc = lpfc_sli_issue_mbox(cq->phba, mbox, MBX_POLL);
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &mbox->u.mqe.un.wq_create.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2506 CQ_DESTROY mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ }
+ /* Remove cq from any list */
+ list_del_init(&cq->list);
+ mempool_free(mbox, cq->phba->mbox_mem_pool);
+ return status;
+}
+
+/**
+ * lpfc_mq_destroy - Destroy a Mailbox Queue on the HBA
+ * @phba: HBA structure that indicates port to destroy a queue on.
+ * @mq: The queue structure associated with the queue to destroy.
+ *
+ * This function destroys a queue, as detailed in @mq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @mq struct is used to get the queue ID of the queue to destroy.
+ *
+ * On success this function will return a zero. If the queue destroy mailbox
+ * command fails this function will return -ENXIO.
+ **/
+int
+lpfc_mq_destroy(struct lpfc_hba *phba, struct lpfc_queue *mq)
+{
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ /* sanity check on queue memory */
+ if (!mq)
+ return -ENODEV;
+ mbox = mempool_alloc(mq->phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_mq_destroy) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_MQ_DESTROY,
+ length, LPFC_SLI4_MBX_EMBED);
+ bf_set(lpfc_mbx_mq_destroy_q_id, &mbox->u.mqe.un.mq_destroy.u.request,
+ mq->queue_id);
+ mbox->vport = mq->phba->pport;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ rc = lpfc_sli_issue_mbox(mq->phba, mbox, MBX_POLL);
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &mbox->u.mqe.un.mq_destroy.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2507 MQ_DESTROY mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ }
+ /* Remove mq from any list */
+ list_del_init(&mq->list);
+ mempool_free(mbox, mq->phba->mbox_mem_pool);
+ return status;
+}
+
+/**
+ * lpfc_wq_destroy - Destroy a Work Queue on the HBA
+ * @phba: HBA structure that indicates port to destroy a queue on.
+ * @wq: The queue structure associated with the queue to destroy.
+ *
+ * This function destroys a queue, as detailed in @wq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @wq struct is used to get the queue ID of the queue to destroy.
+ *
+ * On success this function will return a zero. If the queue destroy mailbox
+ * command fails this function will return -ENXIO.
+ **/
+int
+lpfc_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq)
+{
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ /* sanity check on queue memory */
+ if (!wq)
+ return -ENODEV;
+ mbox = mempool_alloc(wq->phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_wq_destroy) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_WQ_DESTROY,
+ length, LPFC_SLI4_MBX_EMBED);
+ bf_set(lpfc_mbx_wq_destroy_q_id, &mbox->u.mqe.un.wq_destroy.u.request,
+ wq->queue_id);
+ mbox->vport = wq->phba->pport;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ rc = lpfc_sli_issue_mbox(wq->phba, mbox, MBX_POLL);
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &mbox->u.mqe.un.wq_destroy.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2508 WQ_DESTROY mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ }
+ /* Remove wq from any list */
+ list_del_init(&wq->list);
+ kfree(wq->pring);
+ wq->pring = NULL;
+ mempool_free(mbox, wq->phba->mbox_mem_pool);
+ return status;
+}
+
+/**
+ * lpfc_rq_destroy - Destroy a Receive Queue on the HBA
+ * @phba: HBA structure that indicates port to destroy a queue on.
+ * @hrq: The queue structure associated with the queue to destroy.
+ * @drq: The queue structure associated with the queue to destroy.
+ *
+ * This function destroys a queue, as detailed in @rq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @rq struct is used to get the queue ID of the queue to destroy.
+ *
+ * On success this function will return a zero. If the queue destroy mailbox
+ * command fails this function will return -ENXIO.
+ **/
+int
+lpfc_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq,
+ struct lpfc_queue *drq)
+{
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, status = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ /* sanity check on queue memory */
+ if (!hrq || !drq)
+ return -ENODEV;
+ mbox = mempool_alloc(hrq->phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_rq_destroy) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_RQ_DESTROY,
+ length, LPFC_SLI4_MBX_EMBED);
+ bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
+ hrq->queue_id);
+ mbox->vport = hrq->phba->pport;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ rc = lpfc_sli_issue_mbox(hrq->phba, mbox, MBX_POLL);
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2509 RQ_DESTROY mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ mempool_free(mbox, hrq->phba->mbox_mem_pool);
+ return -ENXIO;
+ }
+ bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
+ drq->queue_id);
+ rc = lpfc_sli_issue_mbox(drq->phba, mbox, MBX_POLL);
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2510 RQ_DESTROY mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ status = -ENXIO;
+ }
+ list_del_init(&hrq->list);
+ list_del_init(&drq->list);
+ mempool_free(mbox, hrq->phba->mbox_mem_pool);
+ return status;
+}
+
+/**
+ * lpfc_sli4_post_sgl - Post scatter gather list for an XRI to HBA
+ * @phba: The virtual port for which this call being executed.
+ * @pdma_phys_addr0: Physical address of the 1st SGL page.
+ * @pdma_phys_addr1: Physical address of the 2nd SGL page.
+ * @xritag: the xritag that ties this io to the SGL pages.
+ *
+ * This routine will post the sgl pages for the IO that has the xritag
+ * that is in the iocbq structure. The xritag is assigned during iocbq
+ * creation and persists for as long as the driver is loaded.
+ * if the caller has fewer than 256 scatter gather segments to map then
+ * pdma_phys_addr1 should be 0.
+ * If the caller needs to map more than 256 scatter gather segment then
+ * pdma_phys_addr1 should be a valid physical address.
+ * physical address for SGLs must be 64 byte aligned.
+ * If you are going to map 2 SGL's then the first one must have 256 entries
+ * the second sgl can have between 1 and 256 entries.
+ *
+ * Return codes:
+ * 0 - Success
+ * -ENXIO, -ENOMEM - Failure
+ **/
+int
+lpfc_sli4_post_sgl(struct lpfc_hba *phba,
+ dma_addr_t pdma_phys_addr0,
+ dma_addr_t pdma_phys_addr1,
+ uint16_t xritag)
+{
+ struct lpfc_mbx_post_sgl_pages *post_sgl_pages;
+ LPFC_MBOXQ_t *mbox;
+ int rc;
+ uint32_t shdr_status, shdr_add_status;
+ uint32_t mbox_tmo;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ if (xritag == NO_XRI) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0364 Invalid param:\n");
+ return -EINVAL;
+ }
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES,
+ sizeof(struct lpfc_mbx_post_sgl_pages) -
+ sizeof(struct lpfc_sli4_cfg_mhdr), LPFC_SLI4_MBX_EMBED);
+
+ post_sgl_pages = (struct lpfc_mbx_post_sgl_pages *)
+ &mbox->u.mqe.un.post_sgl_pages;
+ bf_set(lpfc_post_sgl_pages_xri, post_sgl_pages, xritag);
+ bf_set(lpfc_post_sgl_pages_xricnt, post_sgl_pages, 1);
+
+ post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_lo =
+ cpu_to_le32(putPaddrLow(pdma_phys_addr0));
+ post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_hi =
+ cpu_to_le32(putPaddrHigh(pdma_phys_addr0));
+
+ post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_lo =
+ cpu_to_le32(putPaddrLow(pdma_phys_addr1));
+ post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_hi =
+ cpu_to_le32(putPaddrHigh(pdma_phys_addr1));
+ if (!phba->sli4_hba.intr_enable)
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ else {
+ mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
+ rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+ }
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr = (union lpfc_sli4_cfg_shdr *) &post_sgl_pages->header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (!phba->sli4_hba.intr_enable)
+ mempool_free(mbox, phba->mbox_mem_pool);
+ else if (rc != MBX_TIMEOUT)
+ mempool_free(mbox, phba->mbox_mem_pool);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2511 POST_SGL mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ }
+ return 0;
+}
+
+/**
+ * lpfc_sli4_alloc_xri - Get an available rpi in the device's range
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to post rpi header templates to the
+ * HBA consistent with the SLI-4 interface spec. This routine
+ * posts a SLI4_PAGE_SIZE memory region to the port to hold up to
+ * SLI4_PAGE_SIZE modulo 64 rpi context headers.
+ *
+ * Returns
+ * A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful
+ * LPFC_RPI_ALLOC_ERROR if no rpis are available.
+ **/
+static uint16_t
+lpfc_sli4_alloc_xri(struct lpfc_hba *phba)
+{
+ unsigned long xri;
+
+ /*
+ * Fetch the next logical xri. Because this index is logical,
+ * the driver starts at 0 each time.
+ */
+ spin_lock_irq(&phba->hbalock);
+ xri = find_first_zero_bit(phba->sli4_hba.xri_bmask,
+ phba->sli4_hba.max_cfg_param.max_xri);
+ if (xri >= phba->sli4_hba.max_cfg_param.max_xri) {
+ spin_unlock_irq(&phba->hbalock);
+ return NO_XRI;
+ } else {
+ set_bit(xri, phba->sli4_hba.xri_bmask);
+ phba->sli4_hba.max_cfg_param.xri_used++;
+ }
+ spin_unlock_irq(&phba->hbalock);
+ return xri;
+}
+
+/**
+ * __lpfc_sli4_free_xri - Release an xri for reuse.
+ * @phba: pointer to lpfc hba data structure.
+ * @xri: xri to release.
+ *
+ * This routine is invoked to release an xri to the pool of
+ * available rpis maintained by the driver.
+ **/
+static void
+__lpfc_sli4_free_xri(struct lpfc_hba *phba, int xri)
+{
+ if (test_and_clear_bit(xri, phba->sli4_hba.xri_bmask)) {
+ phba->sli4_hba.max_cfg_param.xri_used--;
+ }
+}
+
+/**
+ * lpfc_sli4_free_xri - Release an xri for reuse.
+ * @phba: pointer to lpfc hba data structure.
+ * @xri: xri to release.
+ *
+ * This routine is invoked to release an xri to the pool of
+ * available rpis maintained by the driver.
+ **/
+void
+lpfc_sli4_free_xri(struct lpfc_hba *phba, int xri)
+{
+ spin_lock_irq(&phba->hbalock);
+ __lpfc_sli4_free_xri(phba, xri);
+ spin_unlock_irq(&phba->hbalock);
+}
+
+/**
+ * lpfc_sli4_next_xritag - Get an xritag for the io
+ * @phba: Pointer to HBA context object.
+ *
+ * This function gets an xritag for the iocb. If there is no unused xritag
+ * it will return 0xffff.
+ * The function returns the allocated xritag if successful, else returns zero.
+ * Zero is not a valid xritag.
+ * The caller is not required to hold any lock.
+ **/
+uint16_t
+lpfc_sli4_next_xritag(struct lpfc_hba *phba)
+{
+ uint16_t xri_index;
+
+ xri_index = lpfc_sli4_alloc_xri(phba);
+ if (xri_index == NO_XRI)
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "2004 Failed to allocate XRI.last XRITAG is %d"
+ " Max XRI is %d, Used XRI is %d\n",
+ xri_index,
+ phba->sli4_hba.max_cfg_param.max_xri,
+ phba->sli4_hba.max_cfg_param.xri_used);
+ return xri_index;
+}
+
+/**
+ * lpfc_sli4_post_sgl_list - post a block of ELS sgls to the port.
+ * @phba: pointer to lpfc hba data structure.
+ * @post_sgl_list: pointer to els sgl entry list.
+ * @post_cnt: number of els sgl entries on the list.
+ *
+ * This routine is invoked to post a block of driver's sgl pages to the
+ * HBA using non-embedded mailbox command. No Lock is held. This routine
+ * is only called when the driver is loading and after all IO has been
+ * stopped.
+ **/
+static int
+lpfc_sli4_post_sgl_list(struct lpfc_hba *phba,
+ struct list_head *post_sgl_list,
+ int post_cnt)
+{
+ struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
+ struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
+ struct sgl_page_pairs *sgl_pg_pairs;
+ void *viraddr;
+ LPFC_MBOXQ_t *mbox;
+ uint32_t reqlen, alloclen, pg_pairs;
+ uint32_t mbox_tmo;
+ uint16_t xritag_start = 0;
+ int rc = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ reqlen = post_cnt * sizeof(struct sgl_page_pairs) +
+ sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
+ if (reqlen > SLI4_PAGE_SIZE) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2559 Block sgl registration required DMA "
+ "size (%d) great than a page\n", reqlen);
+ return -ENOMEM;
+ }
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+
+ /* Allocate DMA memory and set up the non-embedded mailbox command */
+ alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
+ LPFC_SLI4_MBX_NEMBED);
+
+ if (alloclen < reqlen) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "0285 Allocated DMA memory size (%d) is "
+ "less than the requested DMA memory "
+ "size (%d)\n", alloclen, reqlen);
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ return -ENOMEM;
+ }
+ /* Set up the SGL pages in the non-embedded DMA pages */
+ viraddr = mbox->sge_array->addr[0];
+ sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
+ sgl_pg_pairs = &sgl->sgl_pg_pairs;
+
+ pg_pairs = 0;
+ list_for_each_entry_safe(sglq_entry, sglq_next, post_sgl_list, list) {
+ /* Set up the sge entry */
+ sgl_pg_pairs->sgl_pg0_addr_lo =
+ cpu_to_le32(putPaddrLow(sglq_entry->phys));
+ sgl_pg_pairs->sgl_pg0_addr_hi =
+ cpu_to_le32(putPaddrHigh(sglq_entry->phys));
+ sgl_pg_pairs->sgl_pg1_addr_lo =
+ cpu_to_le32(putPaddrLow(0));
+ sgl_pg_pairs->sgl_pg1_addr_hi =
+ cpu_to_le32(putPaddrHigh(0));
+
+ /* Keep the first xritag on the list */
+ if (pg_pairs == 0)
+ xritag_start = sglq_entry->sli4_xritag;
+ sgl_pg_pairs++;
+ pg_pairs++;
+ }
+
+ /* Complete initialization and perform endian conversion. */
+ bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
+ bf_set(lpfc_post_sgl_pages_xricnt, sgl, post_cnt);
+ sgl->word0 = cpu_to_le32(sgl->word0);
+
+ if (!phba->sli4_hba.intr_enable)
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ else {
+ mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
+ rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+ }
+ shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (!phba->sli4_hba.intr_enable)
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ else if (rc != MBX_TIMEOUT)
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2513 POST_SGL_BLOCK mailbox command failed "
+ "status x%x add_status x%x mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ rc = -ENXIO;
+ }
+ return rc;
+}
+
+/**
+ * lpfc_sli4_post_io_sgl_block - post a block of nvme sgl list to firmware
+ * @phba: pointer to lpfc hba data structure.
+ * @nblist: pointer to nvme buffer list.
+ * @count: number of scsi buffers on the list.
+ *
+ * This routine is invoked to post a block of @count scsi sgl pages from a
+ * SCSI buffer list @nblist to the HBA using non-embedded mailbox command.
+ * No Lock is held.
+ *
+ **/
+static int
+lpfc_sli4_post_io_sgl_block(struct lpfc_hba *phba, struct list_head *nblist,
+ int count)
+{
+ struct lpfc_io_buf *lpfc_ncmd;
+ struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
+ struct sgl_page_pairs *sgl_pg_pairs;
+ void *viraddr;
+ LPFC_MBOXQ_t *mbox;
+ uint32_t reqlen, alloclen, pg_pairs;
+ uint32_t mbox_tmo;
+ uint16_t xritag_start = 0;
+ int rc = 0;
+ uint32_t shdr_status, shdr_add_status;
+ dma_addr_t pdma_phys_bpl1;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ /* Calculate the requested length of the dma memory */
+ reqlen = count * sizeof(struct sgl_page_pairs) +
+ sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
+ if (reqlen > SLI4_PAGE_SIZE) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+ "6118 Block sgl registration required DMA "
+ "size (%d) great than a page\n", reqlen);
+ return -ENOMEM;
+ }
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6119 Failed to allocate mbox cmd memory\n");
+ return -ENOMEM;
+ }
+
+ /* Allocate DMA memory and set up the non-embedded mailbox command */
+ alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES,
+ reqlen, LPFC_SLI4_MBX_NEMBED);
+
+ if (alloclen < reqlen) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6120 Allocated DMA memory size (%d) is "
+ "less than the requested DMA memory "
+ "size (%d)\n", alloclen, reqlen);
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ return -ENOMEM;
+ }
+
+ /* Get the first SGE entry from the non-embedded DMA memory */
+ viraddr = mbox->sge_array->addr[0];
+
+ /* Set up the SGL pages in the non-embedded DMA pages */
+ sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
+ sgl_pg_pairs = &sgl->sgl_pg_pairs;
+
+ pg_pairs = 0;
+ list_for_each_entry(lpfc_ncmd, nblist, list) {
+ /* Set up the sge entry */
+ sgl_pg_pairs->sgl_pg0_addr_lo =
+ cpu_to_le32(putPaddrLow(lpfc_ncmd->dma_phys_sgl));
+ sgl_pg_pairs->sgl_pg0_addr_hi =
+ cpu_to_le32(putPaddrHigh(lpfc_ncmd->dma_phys_sgl));
+ if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
+ pdma_phys_bpl1 = lpfc_ncmd->dma_phys_sgl +
+ SGL_PAGE_SIZE;
+ else
+ pdma_phys_bpl1 = 0;
+ sgl_pg_pairs->sgl_pg1_addr_lo =
+ cpu_to_le32(putPaddrLow(pdma_phys_bpl1));
+ sgl_pg_pairs->sgl_pg1_addr_hi =
+ cpu_to_le32(putPaddrHigh(pdma_phys_bpl1));
+ /* Keep the first xritag on the list */
+ if (pg_pairs == 0)
+ xritag_start = lpfc_ncmd->cur_iocbq.sli4_xritag;
+ sgl_pg_pairs++;
+ pg_pairs++;
+ }
+ bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
+ bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
+ /* Perform endian conversion if necessary */
+ sgl->word0 = cpu_to_le32(sgl->word0);
+
+ if (!phba->sli4_hba.intr_enable) {
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ } else {
+ mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
+ rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+ }
+ shdr = (union lpfc_sli4_cfg_shdr *)&sgl->cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ if (!phba->sli4_hba.intr_enable)
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ else if (rc != MBX_TIMEOUT)
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6125 POST_SGL_BLOCK mailbox command failed "
+ "status x%x add_status x%x mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ rc = -ENXIO;
+ }
+ return rc;
+}
+
+/**
+ * lpfc_sli4_post_io_sgl_list - Post blocks of nvme buffer sgls from a list
+ * @phba: pointer to lpfc hba data structure.
+ * @post_nblist: pointer to the nvme buffer list.
+ * @sb_count: number of nvme buffers.
+ *
+ * This routine walks a list of nvme buffers that was passed in. It attempts
+ * to construct blocks of nvme buffer sgls which contains contiguous xris and
+ * uses the non-embedded SGL block post mailbox commands to post to the port.
+ * For single NVME buffer sgl with non-contiguous xri, if any, it shall use
+ * embedded SGL post mailbox command for posting. The @post_nblist passed in
+ * must be local list, thus no lock is needed when manipulate the list.
+ *
+ * Returns: 0 = failure, non-zero number of successfully posted buffers.
+ **/
+int
+lpfc_sli4_post_io_sgl_list(struct lpfc_hba *phba,
+ struct list_head *post_nblist, int sb_count)
+{
+ struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
+ int status, sgl_size;
+ int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0;
+ dma_addr_t pdma_phys_sgl1;
+ int last_xritag = NO_XRI;
+ int cur_xritag;
+ LIST_HEAD(prep_nblist);
+ LIST_HEAD(blck_nblist);
+ LIST_HEAD(nvme_nblist);
+
+ /* sanity check */
+ if (sb_count <= 0)
+ return -EINVAL;
+
+ sgl_size = phba->cfg_sg_dma_buf_size;
+ list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, post_nblist, list) {
+ list_del_init(&lpfc_ncmd->list);
+ block_cnt++;
+ if ((last_xritag != NO_XRI) &&
+ (lpfc_ncmd->cur_iocbq.sli4_xritag != last_xritag + 1)) {
+ /* a hole in xri block, form a sgl posting block */
+ list_splice_init(&prep_nblist, &blck_nblist);
+ post_cnt = block_cnt - 1;
+ /* prepare list for next posting block */
+ list_add_tail(&lpfc_ncmd->list, &prep_nblist);
+ block_cnt = 1;
+ } else {
+ /* prepare list for next posting block */
+ list_add_tail(&lpfc_ncmd->list, &prep_nblist);
+ /* enough sgls for non-embed sgl mbox command */
+ if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
+ list_splice_init(&prep_nblist, &blck_nblist);
+ post_cnt = block_cnt;
+ block_cnt = 0;
+ }
+ }
+ num_posting++;
+ last_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag;
+
+ /* end of repost sgl list condition for NVME buffers */
+ if (num_posting == sb_count) {
+ if (post_cnt == 0) {
+ /* last sgl posting block */
+ list_splice_init(&prep_nblist, &blck_nblist);
+ post_cnt = block_cnt;
+ } else if (block_cnt == 1) {
+ /* last single sgl with non-contiguous xri */
+ if (sgl_size > SGL_PAGE_SIZE)
+ pdma_phys_sgl1 =
+ lpfc_ncmd->dma_phys_sgl +
+ SGL_PAGE_SIZE;
+ else
+ pdma_phys_sgl1 = 0;
+ cur_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag;
+ status = lpfc_sli4_post_sgl(
+ phba, lpfc_ncmd->dma_phys_sgl,
+ pdma_phys_sgl1, cur_xritag);
+ if (status) {
+ /* Post error. Buffer unavailable. */
+ lpfc_ncmd->flags |=
+ LPFC_SBUF_NOT_POSTED;
+ } else {
+ /* Post success. Bffer available. */
+ lpfc_ncmd->flags &=
+ ~LPFC_SBUF_NOT_POSTED;
+ lpfc_ncmd->status = IOSTAT_SUCCESS;
+ num_posted++;
+ }
+ /* success, put on NVME buffer sgl list */
+ list_add_tail(&lpfc_ncmd->list, &nvme_nblist);
+ }
+ }
+
+ /* continue until a nembed page worth of sgls */
+ if (post_cnt == 0)
+ continue;
+
+ /* post block of NVME buffer list sgls */
+ status = lpfc_sli4_post_io_sgl_block(phba, &blck_nblist,
+ post_cnt);
+
+ /* don't reset xirtag due to hole in xri block */
+ if (block_cnt == 0)
+ last_xritag = NO_XRI;
+
+ /* reset NVME buffer post count for next round of posting */
+ post_cnt = 0;
+
+ /* put posted NVME buffer-sgl posted on NVME buffer sgl list */
+ while (!list_empty(&blck_nblist)) {
+ list_remove_head(&blck_nblist, lpfc_ncmd,
+ struct lpfc_io_buf, list);
+ if (status) {
+ /* Post error. Mark buffer unavailable. */
+ lpfc_ncmd->flags |= LPFC_SBUF_NOT_POSTED;
+ } else {
+ /* Post success, Mark buffer available. */
+ lpfc_ncmd->flags &= ~LPFC_SBUF_NOT_POSTED;
+ lpfc_ncmd->status = IOSTAT_SUCCESS;
+ num_posted++;
+ }
+ list_add_tail(&lpfc_ncmd->list, &nvme_nblist);
+ }
+ }
+ /* Push NVME buffers with sgl posted to the available list */
+ lpfc_io_buf_replenish(phba, &nvme_nblist);
+
+ return num_posted;
+}
+
+/**
+ * lpfc_fc_frame_check - Check that this frame is a valid frame to handle
+ * @phba: pointer to lpfc_hba struct that the frame was received on
+ * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
+ *
+ * This function checks the fields in the @fc_hdr to see if the FC frame is a
+ * valid type of frame that the LPFC driver will handle. This function will
+ * return a zero if the frame is a valid frame or a non zero value when the
+ * frame does not pass the check.
+ **/
+static int
+lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)
+{
+ /* make rctl_names static to save stack space */
+ struct fc_vft_header *fc_vft_hdr;
+ uint32_t *header = (uint32_t *) fc_hdr;
+
+#define FC_RCTL_MDS_DIAGS 0xF4
+
+ switch (fc_hdr->fh_r_ctl) {
+ case FC_RCTL_DD_UNCAT: /* uncategorized information */
+ case FC_RCTL_DD_SOL_DATA: /* solicited data */
+ case FC_RCTL_DD_UNSOL_CTL: /* unsolicited control */
+ case FC_RCTL_DD_SOL_CTL: /* solicited control or reply */
+ case FC_RCTL_DD_UNSOL_DATA: /* unsolicited data */
+ case FC_RCTL_DD_DATA_DESC: /* data descriptor */
+ case FC_RCTL_DD_UNSOL_CMD: /* unsolicited command */
+ case FC_RCTL_DD_CMD_STATUS: /* command status */
+ case FC_RCTL_ELS_REQ: /* extended link services request */
+ case FC_RCTL_ELS_REP: /* extended link services reply */
+ case FC_RCTL_ELS4_REQ: /* FC-4 ELS request */
+ case FC_RCTL_ELS4_REP: /* FC-4 ELS reply */
+ case FC_RCTL_BA_ABTS: /* basic link service abort */
+ case FC_RCTL_BA_RMC: /* remove connection */
+ case FC_RCTL_BA_ACC: /* basic accept */
+ case FC_RCTL_BA_RJT: /* basic reject */
+ case FC_RCTL_BA_PRMT:
+ case FC_RCTL_ACK_1: /* acknowledge_1 */
+ case FC_RCTL_ACK_0: /* acknowledge_0 */
+ case FC_RCTL_P_RJT: /* port reject */
+ case FC_RCTL_F_RJT: /* fabric reject */
+ case FC_RCTL_P_BSY: /* port busy */
+ case FC_RCTL_F_BSY: /* fabric busy to data frame */
+ case FC_RCTL_F_BSYL: /* fabric busy to link control frame */
+ case FC_RCTL_LCR: /* link credit reset */
+ case FC_RCTL_MDS_DIAGS: /* MDS Diagnostics */
+ case FC_RCTL_END: /* end */
+ break;
+ case FC_RCTL_VFTH: /* Virtual Fabric tagging Header */
+ fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
+ fc_hdr = &((struct fc_frame_header *)fc_vft_hdr)[1];
+ return lpfc_fc_frame_check(phba, fc_hdr);
+ case FC_RCTL_BA_NOP: /* basic link service NOP */
+ default:
+ goto drop;
+ }
+
+ switch (fc_hdr->fh_type) {
+ case FC_TYPE_BLS:
+ case FC_TYPE_ELS:
+ case FC_TYPE_FCP:
+ case FC_TYPE_CT:
+ case FC_TYPE_NVME:
+ break;
+ case FC_TYPE_IP:
+ case FC_TYPE_ILS:
+ default:
+ goto drop;
+ }
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+ "2538 Received frame rctl:x%x, type:x%x, "
+ "frame Data:%08x %08x %08x %08x %08x %08x %08x\n",
+ fc_hdr->fh_r_ctl, fc_hdr->fh_type,
+ be32_to_cpu(header[0]), be32_to_cpu(header[1]),
+ be32_to_cpu(header[2]), be32_to_cpu(header[3]),
+ be32_to_cpu(header[4]), be32_to_cpu(header[5]),
+ be32_to_cpu(header[6]));
+ return 0;
+drop:
+ lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
+ "2539 Dropped frame rctl:x%x type:x%x\n",
+ fc_hdr->fh_r_ctl, fc_hdr->fh_type);
+ return 1;
+}
+
+/**
+ * lpfc_fc_hdr_get_vfi - Get the VFI from an FC frame
+ * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
+ *
+ * This function processes the FC header to retrieve the VFI from the VF
+ * header, if one exists. This function will return the VFI if one exists
+ * or 0 if no VSAN Header exists.
+ **/
+static uint32_t
+lpfc_fc_hdr_get_vfi(struct fc_frame_header *fc_hdr)
+{
+ struct fc_vft_header *fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
+
+ if (fc_hdr->fh_r_ctl != FC_RCTL_VFTH)
+ return 0;
+ return bf_get(fc_vft_hdr_vf_id, fc_vft_hdr);
+}
+
+/**
+ * lpfc_fc_frame_to_vport - Finds the vport that a frame is destined to
+ * @phba: Pointer to the HBA structure to search for the vport on
+ * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
+ * @fcfi: The FC Fabric ID that the frame came from
+ * @did: Destination ID to match against
+ *
+ * This function searches the @phba for a vport that matches the content of the
+ * @fc_hdr passed in and the @fcfi. This function uses the @fc_hdr to fetch the
+ * VFI, if the Virtual Fabric Tagging Header exists, and the DID. This function
+ * returns the matching vport pointer or NULL if unable to match frame to a
+ * vport.
+ **/
+static struct lpfc_vport *
+lpfc_fc_frame_to_vport(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr,
+ uint16_t fcfi, uint32_t did)
+{
+ struct lpfc_vport **vports;
+ struct lpfc_vport *vport = NULL;
+ int i;
+
+ if (did == Fabric_DID)
+ return phba->pport;
+ if ((phba->pport->fc_flag & FC_PT2PT) &&
+ !(phba->link_state == LPFC_HBA_READY))
+ return phba->pport;
+
+ vports = lpfc_create_vport_work_array(phba);
+ if (vports != NULL) {
+ for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+ if (phba->fcf.fcfi == fcfi &&
+ vports[i]->vfi == lpfc_fc_hdr_get_vfi(fc_hdr) &&
+ vports[i]->fc_myDID == did) {
+ vport = vports[i];
+ break;
+ }
+ }
+ }
+ lpfc_destroy_vport_work_array(phba, vports);
+ return vport;
+}
+
+/**
+ * lpfc_update_rcv_time_stamp - Update vport's rcv seq time stamp
+ * @vport: The vport to work on.
+ *
+ * This function updates the receive sequence time stamp for this vport. The
+ * receive sequence time stamp indicates the time that the last frame of the
+ * the sequence that has been idle for the longest amount of time was received.
+ * the driver uses this time stamp to indicate if any received sequences have
+ * timed out.
+ **/
+static void
+lpfc_update_rcv_time_stamp(struct lpfc_vport *vport)
+{
+ struct lpfc_dmabuf *h_buf;
+ struct hbq_dmabuf *dmabuf = NULL;
+
+ /* get the oldest sequence on the rcv list */
+ h_buf = list_get_first(&vport->rcv_buffer_list,
+ struct lpfc_dmabuf, list);
+ if (!h_buf)
+ return;
+ dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
+ vport->rcv_buffer_time_stamp = dmabuf->time_stamp;
+}
+
+/**
+ * lpfc_cleanup_rcv_buffers - Cleans up all outstanding receive sequences.
+ * @vport: The vport that the received sequences were sent to.
+ *
+ * This function cleans up all outstanding received sequences. This is called
+ * by the driver when a link event or user action invalidates all the received
+ * sequences.
+ **/
+void
+lpfc_cleanup_rcv_buffers(struct lpfc_vport *vport)
+{
+ struct lpfc_dmabuf *h_buf, *hnext;
+ struct lpfc_dmabuf *d_buf, *dnext;
+ struct hbq_dmabuf *dmabuf = NULL;
+
+ /* start with the oldest sequence on the rcv list */
+ list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) {
+ dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
+ list_del_init(&dmabuf->hbuf.list);
+ list_for_each_entry_safe(d_buf, dnext,
+ &dmabuf->dbuf.list, list) {
+ list_del_init(&d_buf->list);
+ lpfc_in_buf_free(vport->phba, d_buf);
+ }
+ lpfc_in_buf_free(vport->phba, &dmabuf->dbuf);
+ }
+}
+
+/**
+ * lpfc_rcv_seq_check_edtov - Cleans up timed out receive sequences.
+ * @vport: The vport that the received sequences were sent to.
+ *
+ * This function determines whether any received sequences have timed out by
+ * first checking the vport's rcv_buffer_time_stamp. If this time_stamp
+ * indicates that there is at least one timed out sequence this routine will
+ * go through the received sequences one at a time from most inactive to most
+ * active to determine which ones need to be cleaned up. Once it has determined
+ * that a sequence needs to be cleaned up it will simply free up the resources
+ * without sending an abort.
+ **/
+void
+lpfc_rcv_seq_check_edtov(struct lpfc_vport *vport)
+{
+ struct lpfc_dmabuf *h_buf, *hnext;
+ struct lpfc_dmabuf *d_buf, *dnext;
+ struct hbq_dmabuf *dmabuf = NULL;
+ unsigned long timeout;
+ int abort_count = 0;
+
+ timeout = (msecs_to_jiffies(vport->phba->fc_edtov) +
+ vport->rcv_buffer_time_stamp);
+ if (list_empty(&vport->rcv_buffer_list) ||
+ time_before(jiffies, timeout))
+ return;
+ /* start with the oldest sequence on the rcv list */
+ list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) {
+ dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
+ timeout = (msecs_to_jiffies(vport->phba->fc_edtov) +
+ dmabuf->time_stamp);
+ if (time_before(jiffies, timeout))
+ break;
+ abort_count++;
+ list_del_init(&dmabuf->hbuf.list);
+ list_for_each_entry_safe(d_buf, dnext,
+ &dmabuf->dbuf.list, list) {
+ list_del_init(&d_buf->list);
+ lpfc_in_buf_free(vport->phba, d_buf);
+ }
+ lpfc_in_buf_free(vport->phba, &dmabuf->dbuf);
+ }
+ if (abort_count)
+ lpfc_update_rcv_time_stamp(vport);
+}
+
+/**
+ * lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences
+ * @vport: pointer to a vitural port
+ * @dmabuf: pointer to a dmabuf that describes the hdr and data of the FC frame
+ *
+ * This function searches through the existing incomplete sequences that have
+ * been sent to this @vport. If the frame matches one of the incomplete
+ * sequences then the dbuf in the @dmabuf is added to the list of frames that
+ * make up that sequence. If no sequence is found that matches this frame then
+ * the function will add the hbuf in the @dmabuf to the @vport's rcv_buffer_list
+ * This function returns a pointer to the first dmabuf in the sequence list that
+ * the frame was linked to.
+ **/
+static struct hbq_dmabuf *
+lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
+{
+ struct fc_frame_header *new_hdr;
+ struct fc_frame_header *temp_hdr;
+ struct lpfc_dmabuf *d_buf;
+ struct lpfc_dmabuf *h_buf;
+ struct hbq_dmabuf *seq_dmabuf = NULL;
+ struct hbq_dmabuf *temp_dmabuf = NULL;
+ uint8_t found = 0;
+
+ INIT_LIST_HEAD(&dmabuf->dbuf.list);
+ dmabuf->time_stamp = jiffies;
+ new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
+
+ /* Use the hdr_buf to find the sequence that this frame belongs to */
+ list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) {
+ temp_hdr = (struct fc_frame_header *)h_buf->virt;
+ if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) ||
+ (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) ||
+ (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3)))
+ continue;
+ /* found a pending sequence that matches this frame */
+ seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
+ break;
+ }
+ if (!seq_dmabuf) {
+ /*
+ * This indicates first frame received for this sequence.
+ * Queue the buffer on the vport's rcv_buffer_list.
+ */
+ list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
+ lpfc_update_rcv_time_stamp(vport);
+ return dmabuf;
+ }
+ temp_hdr = seq_dmabuf->hbuf.virt;
+ if (be16_to_cpu(new_hdr->fh_seq_cnt) <
+ be16_to_cpu(temp_hdr->fh_seq_cnt)) {
+ list_del_init(&seq_dmabuf->hbuf.list);
+ list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
+ list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list);
+ lpfc_update_rcv_time_stamp(vport);
+ return dmabuf;
+ }
+ /* move this sequence to the tail to indicate a young sequence */
+ list_move_tail(&seq_dmabuf->hbuf.list, &vport->rcv_buffer_list);
+ seq_dmabuf->time_stamp = jiffies;
+ lpfc_update_rcv_time_stamp(vport);
+ if (list_empty(&seq_dmabuf->dbuf.list)) {
+ list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list);
+ return seq_dmabuf;
+ }
+ /* find the correct place in the sequence to insert this frame */
+ d_buf = list_entry(seq_dmabuf->dbuf.list.prev, typeof(*d_buf), list);
+ while (!found) {
+ temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+ temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt;
+ /*
+ * If the frame's sequence count is greater than the frame on
+ * the list then insert the frame right after this frame
+ */
+ if (be16_to_cpu(new_hdr->fh_seq_cnt) >
+ be16_to_cpu(temp_hdr->fh_seq_cnt)) {
+ list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list);
+ found = 1;
+ break;
+ }
+
+ if (&d_buf->list == &seq_dmabuf->dbuf.list)
+ break;
+ d_buf = list_entry(d_buf->list.prev, typeof(*d_buf), list);
+ }
+
+ if (found)
+ return seq_dmabuf;
+ return NULL;
+}
+
+/**
+ * lpfc_sli4_abort_partial_seq - Abort partially assembled unsol sequence
+ * @vport: pointer to a vitural port
+ * @dmabuf: pointer to a dmabuf that describes the FC sequence
+ *
+ * This function tries to abort from the partially assembed sequence, described
+ * by the information from basic abbort @dmabuf. It checks to see whether such
+ * partially assembled sequence held by the driver. If so, it shall free up all
+ * the frames from the partially assembled sequence.
+ *
+ * Return
+ * true -- if there is matching partially assembled sequence present and all
+ * the frames freed with the sequence;
+ * false -- if there is no matching partially assembled sequence present so
+ * nothing got aborted in the lower layer driver
+ **/
+static bool
+lpfc_sli4_abort_partial_seq(struct lpfc_vport *vport,
+ struct hbq_dmabuf *dmabuf)
+{
+ struct fc_frame_header *new_hdr;
+ struct fc_frame_header *temp_hdr;
+ struct lpfc_dmabuf *d_buf, *n_buf, *h_buf;
+ struct hbq_dmabuf *seq_dmabuf = NULL;
+
+ /* Use the hdr_buf to find the sequence that matches this frame */
+ INIT_LIST_HEAD(&dmabuf->dbuf.list);
+ INIT_LIST_HEAD(&dmabuf->hbuf.list);
+ new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
+ list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) {
+ temp_hdr = (struct fc_frame_header *)h_buf->virt;
+ if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) ||
+ (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) ||
+ (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3)))
+ continue;
+ /* found a pending sequence that matches this frame */
+ seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
+ break;
+ }
+
+ /* Free up all the frames from the partially assembled sequence */
+ if (seq_dmabuf) {
+ list_for_each_entry_safe(d_buf, n_buf,
+ &seq_dmabuf->dbuf.list, list) {
+ list_del_init(&d_buf->list);
+ lpfc_in_buf_free(vport->phba, d_buf);
+ }
+ return true;
+ }
+ return false;
+}
+
+/**
+ * lpfc_sli4_abort_ulp_seq - Abort assembled unsol sequence from ulp
+ * @vport: pointer to a vitural port
+ * @dmabuf: pointer to a dmabuf that describes the FC sequence
+ *
+ * This function tries to abort from the assembed sequence from upper level
+ * protocol, described by the information from basic abbort @dmabuf. It
+ * checks to see whether such pending context exists at upper level protocol.
+ * If so, it shall clean up the pending context.
+ *
+ * Return
+ * true -- if there is matching pending context of the sequence cleaned
+ * at ulp;
+ * false -- if there is no matching pending context of the sequence present
+ * at ulp.
+ **/
+static bool
+lpfc_sli4_abort_ulp_seq(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
+{
+ struct lpfc_hba *phba = vport->phba;
+ int handled;
+
+ /* Accepting abort at ulp with SLI4 only */
+ if (phba->sli_rev < LPFC_SLI_REV4)
+ return false;
+
+ /* Register all caring upper level protocols to attend abort */
+ handled = lpfc_ct_handle_unsol_abort(phba, dmabuf);
+ if (handled)
+ return true;
+
+ return false;
+}
+
+/**
+ * lpfc_sli4_seq_abort_rsp_cmpl - BLS ABORT RSP seq abort iocb complete handler
+ * @phba: Pointer to HBA context object.
+ * @cmd_iocbq: pointer to the command iocbq structure.
+ * @rsp_iocbq: pointer to the response iocbq structure.
+ *
+ * This function handles the sequence abort response iocb command complete
+ * event. It properly releases the memory allocated to the sequence abort
+ * accept iocb.
+ **/
+static void
+lpfc_sli4_seq_abort_rsp_cmpl(struct lpfc_hba *phba,
+ struct lpfc_iocbq *cmd_iocbq,
+ struct lpfc_iocbq *rsp_iocbq)
+{
+ if (cmd_iocbq) {
+ lpfc_nlp_put(cmd_iocbq->ndlp);
+ lpfc_sli_release_iocbq(phba, cmd_iocbq);
+ }
+
+ /* Failure means BLS ABORT RSP did not get delivered to remote node*/
+ if (rsp_iocbq && rsp_iocbq->iocb.ulpStatus)
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3154 BLS ABORT RSP failed, data: x%x/x%x\n",
+ get_job_ulpstatus(phba, rsp_iocbq),
+ get_job_word4(phba, rsp_iocbq));
+}
+
+/**
+ * lpfc_sli4_xri_inrange - check xri is in range of xris owned by driver.
+ * @phba: Pointer to HBA context object.
+ * @xri: xri id in transaction.
+ *
+ * This function validates the xri maps to the known range of XRIs allocated an
+ * used by the driver.
+ **/
+uint16_t
+lpfc_sli4_xri_inrange(struct lpfc_hba *phba,
+ uint16_t xri)
+{
+ uint16_t i;
+
+ for (i = 0; i < phba->sli4_hba.max_cfg_param.max_xri; i++) {
+ if (xri == phba->sli4_hba.xri_ids[i])
+ return i;
+ }
+ return NO_XRI;
+}
+
+/**
+ * lpfc_sli4_seq_abort_rsp - bls rsp to sequence abort
+ * @vport: pointer to a virtual port.
+ * @fc_hdr: pointer to a FC frame header.
+ * @aborted: was the partially assembled receive sequence successfully aborted
+ *
+ * This function sends a basic response to a previous unsol sequence abort
+ * event after aborting the sequence handling.
+ **/
+void
+lpfc_sli4_seq_abort_rsp(struct lpfc_vport *vport,
+ struct fc_frame_header *fc_hdr, bool aborted)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *ctiocb = NULL;
+ struct lpfc_nodelist *ndlp;
+ uint16_t oxid, rxid, xri, lxri;
+ uint32_t sid, fctl;
+ union lpfc_wqe128 *icmd;
+ int rc;
+
+ if (!lpfc_is_link_up(phba))
+ return;
+
+ sid = sli4_sid_from_fc_hdr(fc_hdr);
+ oxid = be16_to_cpu(fc_hdr->fh_ox_id);
+ rxid = be16_to_cpu(fc_hdr->fh_rx_id);
+
+ ndlp = lpfc_findnode_did(vport, sid);
+ if (!ndlp) {
+ ndlp = lpfc_nlp_init(vport, sid);
+ if (!ndlp) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
+ "1268 Failed to allocate ndlp for "
+ "oxid:x%x SID:x%x\n", oxid, sid);
+ return;
+ }
+ /* Put ndlp onto pport node list */
+ lpfc_enqueue_node(vport, ndlp);
+ }
+
+ /* Allocate buffer for rsp iocb */
+ ctiocb = lpfc_sli_get_iocbq(phba);
+ if (!ctiocb)
+ return;
+
+ icmd = &ctiocb->wqe;
+
+ /* Extract the F_CTL field from FC_HDR */
+ fctl = sli4_fctl_from_fc_hdr(fc_hdr);
+
+ ctiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!ctiocb->ndlp) {
+ lpfc_sli_release_iocbq(phba, ctiocb);
+ return;
+ }
+
+ ctiocb->vport = phba->pport;
+ ctiocb->cmd_cmpl = lpfc_sli4_seq_abort_rsp_cmpl;
+ ctiocb->sli4_lxritag = NO_XRI;
+ ctiocb->sli4_xritag = NO_XRI;
+ ctiocb->abort_rctl = FC_RCTL_BA_ACC;
+
+ if (fctl & FC_FC_EX_CTX)
+ /* Exchange responder sent the abort so we
+ * own the oxid.
+ */
+ xri = oxid;
+ else
+ xri = rxid;
+ lxri = lpfc_sli4_xri_inrange(phba, xri);
+ if (lxri != NO_XRI)
+ lpfc_set_rrq_active(phba, ndlp, lxri,
+ (xri == oxid) ? rxid : oxid, 0);
+ /* For BA_ABTS from exchange responder, if the logical xri with
+ * the oxid maps to the FCP XRI range, the port no longer has
+ * that exchange context, send a BLS_RJT. Override the IOCB for
+ * a BA_RJT.
+ */
+ if ((fctl & FC_FC_EX_CTX) &&
+ (lxri > lpfc_sli4_get_iocb_cnt(phba))) {
+ ctiocb->abort_rctl = FC_RCTL_BA_RJT;
+ bf_set(xmit_bls_rsp64_rjt_vspec, &icmd->xmit_bls_rsp, 0);
+ bf_set(xmit_bls_rsp64_rjt_expc, &icmd->xmit_bls_rsp,
+ FC_BA_RJT_INV_XID);
+ bf_set(xmit_bls_rsp64_rjt_rsnc, &icmd->xmit_bls_rsp,
+ FC_BA_RJT_UNABLE);
+ }
+
+ /* If BA_ABTS failed to abort a partially assembled receive sequence,
+ * the driver no longer has that exchange, send a BLS_RJT. Override
+ * the IOCB for a BA_RJT.
+ */
+ if (aborted == false) {
+ ctiocb->abort_rctl = FC_RCTL_BA_RJT;
+ bf_set(xmit_bls_rsp64_rjt_vspec, &icmd->xmit_bls_rsp, 0);
+ bf_set(xmit_bls_rsp64_rjt_expc, &icmd->xmit_bls_rsp,
+ FC_BA_RJT_INV_XID);
+ bf_set(xmit_bls_rsp64_rjt_rsnc, &icmd->xmit_bls_rsp,
+ FC_BA_RJT_UNABLE);
+ }
+
+ if (fctl & FC_FC_EX_CTX) {
+ /* ABTS sent by responder to CT exchange, construction
+ * of BA_ACC will use OX_ID from ABTS for the XRI_TAG
+ * field and RX_ID from ABTS for RX_ID field.
+ */
+ ctiocb->abort_bls = LPFC_ABTS_UNSOL_RSP;
+ bf_set(xmit_bls_rsp64_rxid, &icmd->xmit_bls_rsp, rxid);
+ } else {
+ /* ABTS sent by initiator to CT exchange, construction
+ * of BA_ACC will need to allocate a new XRI as for the
+ * XRI_TAG field.
+ */
+ ctiocb->abort_bls = LPFC_ABTS_UNSOL_INT;
+ }
+
+ /* OX_ID is invariable to who sent ABTS to CT exchange */
+ bf_set(xmit_bls_rsp64_oxid, &icmd->xmit_bls_rsp, oxid);
+ bf_set(xmit_bls_rsp64_oxid, &icmd->xmit_bls_rsp, rxid);
+
+ /* Use CT=VPI */
+ bf_set(wqe_els_did, &icmd->xmit_bls_rsp.wqe_dest,
+ ndlp->nlp_DID);
+ bf_set(xmit_bls_rsp64_temprpi, &icmd->xmit_bls_rsp,
+ phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
+ bf_set(wqe_cmnd, &icmd->generic.wqe_com, CMD_XMIT_BLS_RSP64_CX);
+
+ /* Xmit CT abts response on exchange <xid> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "1200 Send BLS cmd x%x on oxid x%x Data: x%x\n",
+ ctiocb->abort_rctl, oxid, phba->link_state);
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "2925 Failed to issue CT ABTS RSP x%x on "
+ "xri x%x, Data x%x\n",
+ ctiocb->abort_rctl, oxid,
+ phba->link_state);
+ lpfc_nlp_put(ndlp);
+ ctiocb->ndlp = NULL;
+ lpfc_sli_release_iocbq(phba, ctiocb);
+ }
+}
+
+/**
+ * lpfc_sli4_handle_unsol_abort - Handle sli-4 unsolicited abort event
+ * @vport: Pointer to the vport on which this sequence was received
+ * @dmabuf: pointer to a dmabuf that describes the FC sequence
+ *
+ * This function handles an SLI-4 unsolicited abort event. If the unsolicited
+ * receive sequence is only partially assembed by the driver, it shall abort
+ * the partially assembled frames for the sequence. Otherwise, if the
+ * unsolicited receive sequence has been completely assembled and passed to
+ * the Upper Layer Protocol (ULP), it then mark the per oxid status for the
+ * unsolicited sequence has been aborted. After that, it will issue a basic
+ * accept to accept the abort.
+ **/
+static void
+lpfc_sli4_handle_unsol_abort(struct lpfc_vport *vport,
+ struct hbq_dmabuf *dmabuf)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct fc_frame_header fc_hdr;
+ uint32_t fctl;
+ bool aborted;
+
+ /* Make a copy of fc_hdr before the dmabuf being released */
+ memcpy(&fc_hdr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header));
+ fctl = sli4_fctl_from_fc_hdr(&fc_hdr);
+
+ if (fctl & FC_FC_EX_CTX) {
+ /* ABTS by responder to exchange, no cleanup needed */
+ aborted = true;
+ } else {
+ /* ABTS by initiator to exchange, need to do cleanup */
+ aborted = lpfc_sli4_abort_partial_seq(vport, dmabuf);
+ if (aborted == false)
+ aborted = lpfc_sli4_abort_ulp_seq(vport, dmabuf);
+ }
+ lpfc_in_buf_free(phba, &dmabuf->dbuf);
+
+ if (phba->nvmet_support) {
+ lpfc_nvmet_rcv_unsol_abort(vport, &fc_hdr);
+ return;
+ }
+
+ /* Respond with BA_ACC or BA_RJT accordingly */
+ lpfc_sli4_seq_abort_rsp(vport, &fc_hdr, aborted);
+}
+
+/**
+ * lpfc_seq_complete - Indicates if a sequence is complete
+ * @dmabuf: pointer to a dmabuf that describes the FC sequence
+ *
+ * This function checks the sequence, starting with the frame described by
+ * @dmabuf, to see if all the frames associated with this sequence are present.
+ * the frames associated with this sequence are linked to the @dmabuf using the
+ * dbuf list. This function looks for two major things. 1) That the first frame
+ * has a sequence count of zero. 2) There is a frame with last frame of sequence
+ * set. 3) That there are no holes in the sequence count. The function will
+ * return 1 when the sequence is complete, otherwise it will return 0.
+ **/
+static int
+lpfc_seq_complete(struct hbq_dmabuf *dmabuf)
+{
+ struct fc_frame_header *hdr;
+ struct lpfc_dmabuf *d_buf;
+ struct hbq_dmabuf *seq_dmabuf;
+ uint32_t fctl;
+ int seq_count = 0;
+
+ hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
+ /* make sure first fame of sequence has a sequence count of zero */
+ if (hdr->fh_seq_cnt != seq_count)
+ return 0;
+ fctl = (hdr->fh_f_ctl[0] << 16 |
+ hdr->fh_f_ctl[1] << 8 |
+ hdr->fh_f_ctl[2]);
+ /* If last frame of sequence we can return success. */
+ if (fctl & FC_FC_END_SEQ)
+ return 1;
+ list_for_each_entry(d_buf, &dmabuf->dbuf.list, list) {
+ seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+ hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
+ /* If there is a hole in the sequence count then fail. */
+ if (++seq_count != be16_to_cpu(hdr->fh_seq_cnt))
+ return 0;
+ fctl = (hdr->fh_f_ctl[0] << 16 |
+ hdr->fh_f_ctl[1] << 8 |
+ hdr->fh_f_ctl[2]);
+ /* If last frame of sequence we can return success. */
+ if (fctl & FC_FC_END_SEQ)
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * lpfc_prep_seq - Prep sequence for ULP processing
+ * @vport: Pointer to the vport on which this sequence was received
+ * @seq_dmabuf: pointer to a dmabuf that describes the FC sequence
+ *
+ * This function takes a sequence, described by a list of frames, and creates
+ * a list of iocbq structures to describe the sequence. This iocbq list will be
+ * used to issue to the generic unsolicited sequence handler. This routine
+ * returns a pointer to the first iocbq in the list. If the function is unable
+ * to allocate an iocbq then it throw out the received frames that were not
+ * able to be described and return a pointer to the first iocbq. If unable to
+ * allocate any iocbqs (including the first) this function will return NULL.
+ **/
+static struct lpfc_iocbq *
+lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf)
+{
+ struct hbq_dmabuf *hbq_buf;
+ struct lpfc_dmabuf *d_buf, *n_buf;
+ struct lpfc_iocbq *first_iocbq, *iocbq;
+ struct fc_frame_header *fc_hdr;
+ uint32_t sid;
+ uint32_t len, tot_len;
+
+ fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
+ /* remove from receive buffer list */
+ list_del_init(&seq_dmabuf->hbuf.list);
+ lpfc_update_rcv_time_stamp(vport);
+ /* get the Remote Port's SID */
+ sid = sli4_sid_from_fc_hdr(fc_hdr);
+ tot_len = 0;
+ /* Get an iocbq struct to fill in. */
+ first_iocbq = lpfc_sli_get_iocbq(vport->phba);
+ if (first_iocbq) {
+ /* Initialize the first IOCB. */
+ first_iocbq->wcqe_cmpl.total_data_placed = 0;
+ bf_set(lpfc_wcqe_c_status, &first_iocbq->wcqe_cmpl,
+ IOSTAT_SUCCESS);
+ first_iocbq->vport = vport;
+
+ /* Check FC Header to see what TYPE of frame we are rcv'ing */
+ if (sli4_type_from_fc_hdr(fc_hdr) == FC_TYPE_ELS) {
+ bf_set(els_rsp64_sid, &first_iocbq->wqe.xmit_els_rsp,
+ sli4_did_from_fc_hdr(fc_hdr));
+ }
+
+ bf_set(wqe_ctxt_tag, &first_iocbq->wqe.xmit_els_rsp.wqe_com,
+ NO_XRI);
+ bf_set(wqe_rcvoxid, &first_iocbq->wqe.xmit_els_rsp.wqe_com,
+ be16_to_cpu(fc_hdr->fh_ox_id));
+
+ /* put the first buffer into the first iocb */
+ tot_len = bf_get(lpfc_rcqe_length,
+ &seq_dmabuf->cq_event.cqe.rcqe_cmpl);
+
+ first_iocbq->cmd_dmabuf = &seq_dmabuf->dbuf;
+ first_iocbq->bpl_dmabuf = NULL;
+ /* Keep track of the BDE count */
+ first_iocbq->wcqe_cmpl.word3 = 1;
+
+ if (tot_len > LPFC_DATA_BUF_SIZE)
+ first_iocbq->wqe.gen_req.bde.tus.f.bdeSize =
+ LPFC_DATA_BUF_SIZE;
+ else
+ first_iocbq->wqe.gen_req.bde.tus.f.bdeSize = tot_len;
+
+ first_iocbq->wcqe_cmpl.total_data_placed = tot_len;
+ bf_set(wqe_els_did, &first_iocbq->wqe.xmit_els_rsp.wqe_dest,
+ sid);
+ }
+ iocbq = first_iocbq;
+ /*
+ * Each IOCBq can have two Buffers assigned, so go through the list
+ * of buffers for this sequence and save two buffers in each IOCBq
+ */
+ list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) {
+ if (!iocbq) {
+ lpfc_in_buf_free(vport->phba, d_buf);
+ continue;
+ }
+ if (!iocbq->bpl_dmabuf) {
+ iocbq->bpl_dmabuf = d_buf;
+ iocbq->wcqe_cmpl.word3++;
+ /* We need to get the size out of the right CQE */
+ hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+ len = bf_get(lpfc_rcqe_length,
+ &hbq_buf->cq_event.cqe.rcqe_cmpl);
+ iocbq->unsol_rcv_len = len;
+ iocbq->wcqe_cmpl.total_data_placed += len;
+ tot_len += len;
+ } else {
+ iocbq = lpfc_sli_get_iocbq(vport->phba);
+ if (!iocbq) {
+ if (first_iocbq) {
+ bf_set(lpfc_wcqe_c_status,
+ &first_iocbq->wcqe_cmpl,
+ IOSTAT_SUCCESS);
+ first_iocbq->wcqe_cmpl.parameter =
+ IOERR_NO_RESOURCES;
+ }
+ lpfc_in_buf_free(vport->phba, d_buf);
+ continue;
+ }
+ /* We need to get the size out of the right CQE */
+ hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+ len = bf_get(lpfc_rcqe_length,
+ &hbq_buf->cq_event.cqe.rcqe_cmpl);
+ iocbq->cmd_dmabuf = d_buf;
+ iocbq->bpl_dmabuf = NULL;
+ iocbq->wcqe_cmpl.word3 = 1;
+
+ if (len > LPFC_DATA_BUF_SIZE)
+ iocbq->wqe.xmit_els_rsp.bde.tus.f.bdeSize =
+ LPFC_DATA_BUF_SIZE;
+ else
+ iocbq->wqe.xmit_els_rsp.bde.tus.f.bdeSize =
+ len;
+
+ tot_len += len;
+ iocbq->wcqe_cmpl.total_data_placed = tot_len;
+ bf_set(wqe_els_did, &iocbq->wqe.xmit_els_rsp.wqe_dest,
+ sid);
+ list_add_tail(&iocbq->list, &first_iocbq->list);
+ }
+ }
+ /* Free the sequence's header buffer */
+ if (!first_iocbq)
+ lpfc_in_buf_free(vport->phba, &seq_dmabuf->dbuf);
+
+ return first_iocbq;
+}
+
+static void
+lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *vport,
+ struct hbq_dmabuf *seq_dmabuf)
+{
+ struct fc_frame_header *fc_hdr;
+ struct lpfc_iocbq *iocbq, *curr_iocb, *next_iocb;
+ struct lpfc_hba *phba = vport->phba;
+
+ fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
+ iocbq = lpfc_prep_seq(vport, seq_dmabuf);
+ if (!iocbq) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2707 Ring %d handler: Failed to allocate "
+ "iocb Rctl x%x Type x%x received\n",
+ LPFC_ELS_RING,
+ fc_hdr->fh_r_ctl, fc_hdr->fh_type);
+ return;
+ }
+ if (!lpfc_complete_unsol_iocb(phba,
+ phba->sli4_hba.els_wq->pring,
+ iocbq, fc_hdr->fh_r_ctl,
+ fc_hdr->fh_type)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2540 Ring %d handler: unexpected Rctl "
+ "x%x Type x%x received\n",
+ LPFC_ELS_RING,
+ fc_hdr->fh_r_ctl, fc_hdr->fh_type);
+ lpfc_in_buf_free(phba, &seq_dmabuf->dbuf);
+ }
+
+ /* Free iocb created in lpfc_prep_seq */
+ list_for_each_entry_safe(curr_iocb, next_iocb,
+ &iocbq->list, list) {
+ list_del_init(&curr_iocb->list);
+ lpfc_sli_release_iocbq(phba, curr_iocb);
+ }
+ lpfc_sli_release_iocbq(phba, iocbq);
+}
+
+static void
+lpfc_sli4_mds_loopback_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
+
+ if (pcmd && pcmd->virt)
+ dma_pool_free(phba->lpfc_drb_pool, pcmd->virt, pcmd->phys);
+ kfree(pcmd);
+ lpfc_sli_release_iocbq(phba, cmdiocb);
+ lpfc_drain_txq(phba);
+}
+
+static void
+lpfc_sli4_handle_mds_loopback(struct lpfc_vport *vport,
+ struct hbq_dmabuf *dmabuf)
+{
+ struct fc_frame_header *fc_hdr;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *iocbq = NULL;
+ union lpfc_wqe128 *pwqe;
+ struct lpfc_dmabuf *pcmd = NULL;
+ uint32_t frame_len;
+ int rc;
+ unsigned long iflags;
+
+ fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
+ frame_len = bf_get(lpfc_rcqe_length, &dmabuf->cq_event.cqe.rcqe_cmpl);
+
+ /* Send the received frame back */
+ iocbq = lpfc_sli_get_iocbq(phba);
+ if (!iocbq) {
+ /* Queue cq event and wakeup worker thread to process it */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ list_add_tail(&dmabuf->cq_event.list,
+ &phba->sli4_hba.sp_queue_event);
+ phba->hba_flag |= HBA_SP_QUEUE_EVT;
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ lpfc_worker_wake_up(phba);
+ return;
+ }
+
+ /* Allocate buffer for command payload */
+ pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+ if (pcmd)
+ pcmd->virt = dma_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL,
+ &pcmd->phys);
+ if (!pcmd || !pcmd->virt)
+ goto exit;
+
+ INIT_LIST_HEAD(&pcmd->list);
+
+ /* copyin the payload */
+ memcpy(pcmd->virt, dmabuf->dbuf.virt, frame_len);
+
+ iocbq->cmd_dmabuf = pcmd;
+ iocbq->vport = vport;
+ iocbq->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK;
+ iocbq->cmd_flag |= LPFC_USE_FCPWQIDX;
+ iocbq->num_bdes = 0;
+
+ pwqe = &iocbq->wqe;
+ /* fill in BDE's for command */
+ pwqe->gen_req.bde.addrHigh = putPaddrHigh(pcmd->phys);
+ pwqe->gen_req.bde.addrLow = putPaddrLow(pcmd->phys);
+ pwqe->gen_req.bde.tus.f.bdeSize = frame_len;
+ pwqe->gen_req.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+
+ pwqe->send_frame.frame_len = frame_len;
+ pwqe->send_frame.fc_hdr_wd0 = be32_to_cpu(*((__be32 *)fc_hdr));
+ pwqe->send_frame.fc_hdr_wd1 = be32_to_cpu(*((__be32 *)fc_hdr + 1));
+ pwqe->send_frame.fc_hdr_wd2 = be32_to_cpu(*((__be32 *)fc_hdr + 2));
+ pwqe->send_frame.fc_hdr_wd3 = be32_to_cpu(*((__be32 *)fc_hdr + 3));
+ pwqe->send_frame.fc_hdr_wd4 = be32_to_cpu(*((__be32 *)fc_hdr + 4));
+ pwqe->send_frame.fc_hdr_wd5 = be32_to_cpu(*((__be32 *)fc_hdr + 5));
+
+ pwqe->generic.wqe_com.word7 = 0;
+ pwqe->generic.wqe_com.word10 = 0;
+
+ bf_set(wqe_cmnd, &pwqe->generic.wqe_com, CMD_SEND_FRAME);
+ bf_set(wqe_sof, &pwqe->generic.wqe_com, 0x2E); /* SOF byte */
+ bf_set(wqe_eof, &pwqe->generic.wqe_com, 0x41); /* EOF byte */
+ bf_set(wqe_lenloc, &pwqe->generic.wqe_com, 1);
+ bf_set(wqe_xbl, &pwqe->generic.wqe_com, 1);
+ bf_set(wqe_dbde, &pwqe->generic.wqe_com, 1);
+ bf_set(wqe_xc, &pwqe->generic.wqe_com, 1);
+ bf_set(wqe_cmd_type, &pwqe->generic.wqe_com, 0xA);
+ bf_set(wqe_cqid, &pwqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_xri_tag, &pwqe->generic.wqe_com, iocbq->sli4_xritag);
+ bf_set(wqe_reqtag, &pwqe->generic.wqe_com, iocbq->iotag);
+ bf_set(wqe_class, &pwqe->generic.wqe_com, CLASS3);
+ pwqe->generic.wqe_com.abort_tag = iocbq->iotag;
+
+ iocbq->cmd_cmpl = lpfc_sli4_mds_loopback_cmpl;
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocbq, 0);
+ if (rc == IOCB_ERROR)
+ goto exit;
+
+ lpfc_in_buf_free(phba, &dmabuf->dbuf);
+ return;
+
+exit:
+ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+ "2023 Unable to process MDS loopback frame\n");
+ if (pcmd && pcmd->virt)
+ dma_pool_free(phba->lpfc_drb_pool, pcmd->virt, pcmd->phys);
+ kfree(pcmd);
+ if (iocbq)
+ lpfc_sli_release_iocbq(phba, iocbq);
+ lpfc_in_buf_free(phba, &dmabuf->dbuf);
+}
+
+/**
+ * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware
+ * @phba: Pointer to HBA context object.
+ * @dmabuf: Pointer to a dmabuf that describes the FC sequence.
+ *
+ * This function is called with no lock held. This function processes all
+ * the received buffers and gives it to upper layers when a received buffer
+ * indicates that it is the final frame in the sequence. The interrupt
+ * service routine processes received buffers at interrupt contexts.
+ * Worker thread calls lpfc_sli4_handle_received_buffer, which will call the
+ * appropriate receive function when the final frame in a sequence is received.
+ **/
+void
+lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba,
+ struct hbq_dmabuf *dmabuf)
+{
+ struct hbq_dmabuf *seq_dmabuf;
+ struct fc_frame_header *fc_hdr;
+ struct lpfc_vport *vport;
+ uint32_t fcfi;
+ uint32_t did;
+
+ /* Process each received buffer */
+ fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
+
+ if (fc_hdr->fh_r_ctl == FC_RCTL_MDS_DIAGS ||
+ fc_hdr->fh_r_ctl == FC_RCTL_DD_UNSOL_DATA) {
+ vport = phba->pport;
+ /* Handle MDS Loopback frames */
+ if (!(phba->pport->load_flag & FC_UNLOADING))
+ lpfc_sli4_handle_mds_loopback(vport, dmabuf);
+ else
+ lpfc_in_buf_free(phba, &dmabuf->dbuf);
+ return;
+ }
+
+ /* check to see if this a valid type of frame */
+ if (lpfc_fc_frame_check(phba, fc_hdr)) {
+ lpfc_in_buf_free(phba, &dmabuf->dbuf);
+ return;
+ }
+
+ if ((bf_get(lpfc_cqe_code,
+ &dmabuf->cq_event.cqe.rcqe_cmpl) == CQE_CODE_RECEIVE_V1))
+ fcfi = bf_get(lpfc_rcqe_fcf_id_v1,
+ &dmabuf->cq_event.cqe.rcqe_cmpl);
+ else
+ fcfi = bf_get(lpfc_rcqe_fcf_id,
+ &dmabuf->cq_event.cqe.rcqe_cmpl);
+
+ if (fc_hdr->fh_r_ctl == 0xF4 && fc_hdr->fh_type == 0xFF) {
+ vport = phba->pport;
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "2023 MDS Loopback %d bytes\n",
+ bf_get(lpfc_rcqe_length,
+ &dmabuf->cq_event.cqe.rcqe_cmpl));
+ /* Handle MDS Loopback frames */
+ lpfc_sli4_handle_mds_loopback(vport, dmabuf);
+ return;
+ }
+
+ /* d_id this frame is directed to */
+ did = sli4_did_from_fc_hdr(fc_hdr);
+
+ vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi, did);
+ if (!vport) {
+ /* throw out the frame */
+ lpfc_in_buf_free(phba, &dmabuf->dbuf);
+ return;
+ }
+
+ /* vport is registered unless we rcv a FLOGI directed to Fabric_DID */
+ if (!(vport->vpi_state & LPFC_VPI_REGISTERED) &&
+ (did != Fabric_DID)) {
+ /*
+ * Throw out the frame if we are not pt2pt.
+ * The pt2pt protocol allows for discovery frames
+ * to be received without a registered VPI.
+ */
+ if (!(vport->fc_flag & FC_PT2PT) ||
+ (phba->link_state == LPFC_HBA_READY)) {
+ lpfc_in_buf_free(phba, &dmabuf->dbuf);
+ return;
+ }
+ }
+
+ /* Handle the basic abort sequence (BA_ABTS) event */
+ if (fc_hdr->fh_r_ctl == FC_RCTL_BA_ABTS) {
+ lpfc_sli4_handle_unsol_abort(vport, dmabuf);
+ return;
+ }
+
+ /* Link this frame */
+ seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf);
+ if (!seq_dmabuf) {
+ /* unable to add frame to vport - throw it out */
+ lpfc_in_buf_free(phba, &dmabuf->dbuf);
+ return;
+ }
+ /* If not last frame in sequence continue processing frames. */
+ if (!lpfc_seq_complete(seq_dmabuf))
+ return;
+
+ /* Send the complete sequence to the upper layer protocol */
+ lpfc_sli4_send_seq_to_ulp(vport, seq_dmabuf);
+}
+
+/**
+ * lpfc_sli4_post_all_rpi_hdrs - Post the rpi header memory region to the port
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to post rpi header templates to the
+ * HBA consistent with the SLI-4 interface spec. This routine
+ * posts a SLI4_PAGE_SIZE memory region to the port to hold up to
+ * SLI4_PAGE_SIZE modulo 64 rpi context headers.
+ *
+ * This routine does not require any locks. It's usage is expected
+ * to be driver load or reset recovery when the driver is
+ * sequential.
+ *
+ * Return codes
+ * 0 - successful
+ * -EIO - The mailbox failed to complete successfully.
+ * When this error occurs, the driver is not guaranteed
+ * to have any rpi regions posted to the device and
+ * must either attempt to repost the regions or take a
+ * fatal error.
+ **/
+int
+lpfc_sli4_post_all_rpi_hdrs(struct lpfc_hba *phba)
+{
+ struct lpfc_rpi_hdr *rpi_page;
+ uint32_t rc = 0;
+ uint16_t lrpi = 0;
+
+ /* SLI4 ports that support extents do not require RPI headers. */
+ if (!phba->sli4_hba.rpi_hdrs_in_use)
+ goto exit;
+ if (phba->sli4_hba.extents_in_use)
+ return -EIO;
+
+ list_for_each_entry(rpi_page, &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
+ /*
+ * Assign the rpi headers a physical rpi only if the driver
+ * has not initialized those resources. A port reset only
+ * needs the headers posted.
+ */
+ if (bf_get(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags) !=
+ LPFC_RPI_RSRC_RDY)
+ rpi_page->start_rpi = phba->sli4_hba.rpi_ids[lrpi];
+
+ rc = lpfc_sli4_post_rpi_hdr(phba, rpi_page);
+ if (rc != MBX_SUCCESS) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2008 Error %d posting all rpi "
+ "headers\n", rc);
+ rc = -EIO;
+ break;
+ }
+ }
+
+ exit:
+ bf_set(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags,
+ LPFC_RPI_RSRC_RDY);
+ return rc;
+}
+
+/**
+ * lpfc_sli4_post_rpi_hdr - Post an rpi header memory region to the port
+ * @phba: pointer to lpfc hba data structure.
+ * @rpi_page: pointer to the rpi memory region.
+ *
+ * This routine is invoked to post a single rpi header to the
+ * HBA consistent with the SLI-4 interface spec. This memory region
+ * maps up to 64 rpi context regions.
+ *
+ * Return codes
+ * 0 - successful
+ * -ENOMEM - No available memory
+ * -EIO - The mailbox failed to complete successfully.
+ **/
+int
+lpfc_sli4_post_rpi_hdr(struct lpfc_hba *phba, struct lpfc_rpi_hdr *rpi_page)
+{
+ LPFC_MBOXQ_t *mboxq;
+ struct lpfc_mbx_post_hdr_tmpl *hdr_tmpl;
+ uint32_t rc = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+
+ /* SLI4 ports that support extents do not require RPI headers. */
+ if (!phba->sli4_hba.rpi_hdrs_in_use)
+ return rc;
+ if (phba->sli4_hba.extents_in_use)
+ return -EIO;
+
+ /* The port is notified of the header region via a mailbox command. */
+ mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2001 Unable to allocate memory for issuing "
+ "SLI_CONFIG_SPECIAL mailbox command\n");
+ return -ENOMEM;
+ }
+
+ /* Post all rpi memory regions to the port. */
+ hdr_tmpl = &mboxq->u.mqe.un.hdr_tmpl;
+ lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_POST_HDR_TEMPLATE,
+ sizeof(struct lpfc_mbx_post_hdr_tmpl) -
+ sizeof(struct lpfc_sli4_cfg_mhdr),
+ LPFC_SLI4_MBX_EMBED);
+
+
+ /* Post the physical rpi to the port for this rpi header. */
+ bf_set(lpfc_mbx_post_hdr_tmpl_rpi_offset, hdr_tmpl,
+ rpi_page->start_rpi);
+ bf_set(lpfc_mbx_post_hdr_tmpl_page_cnt,
+ hdr_tmpl, rpi_page->page_count);
+
+ hdr_tmpl->rpi_paddr_lo = putPaddrLow(rpi_page->dmabuf->phys);
+ hdr_tmpl->rpi_paddr_hi = putPaddrHigh(rpi_page->dmabuf->phys);
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ shdr = (union lpfc_sli4_cfg_shdr *) &hdr_tmpl->header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+ mempool_free(mboxq, phba->mbox_mem_pool);
+ if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2514 POST_RPI_HDR mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ rc = -ENXIO;
+ } else {
+ /*
+ * The next_rpi stores the next logical module-64 rpi value used
+ * to post physical rpis in subsequent rpi postings.
+ */
+ spin_lock_irq(&phba->hbalock);
+ phba->sli4_hba.next_rpi = rpi_page->next_rpi;
+ spin_unlock_irq(&phba->hbalock);
+ }
+ return rc;
+}
+
+/**
+ * lpfc_sli4_alloc_rpi - Get an available rpi in the device's range
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to post rpi header templates to the
+ * HBA consistent with the SLI-4 interface spec. This routine
+ * posts a SLI4_PAGE_SIZE memory region to the port to hold up to
+ * SLI4_PAGE_SIZE modulo 64 rpi context headers.
+ *
+ * Returns
+ * A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful
+ * LPFC_RPI_ALLOC_ERROR if no rpis are available.
+ **/
+int
+lpfc_sli4_alloc_rpi(struct lpfc_hba *phba)
+{
+ unsigned long rpi;
+ uint16_t max_rpi, rpi_limit;
+ uint16_t rpi_remaining, lrpi = 0;
+ struct lpfc_rpi_hdr *rpi_hdr;
+ unsigned long iflag;
+
+ /*
+ * Fetch the next logical rpi. Because this index is logical,
+ * the driver starts at 0 each time.
+ */
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ max_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
+ rpi_limit = phba->sli4_hba.next_rpi;
+
+ rpi = find_first_zero_bit(phba->sli4_hba.rpi_bmask, rpi_limit);
+ if (rpi >= rpi_limit)
+ rpi = LPFC_RPI_ALLOC_ERROR;
+ else {
+ set_bit(rpi, phba->sli4_hba.rpi_bmask);
+ phba->sli4_hba.max_cfg_param.rpi_used++;
+ phba->sli4_hba.rpi_count++;
+ }
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_NODE | LOG_DISCOVERY,
+ "0001 Allocated rpi:x%x max:x%x lim:x%x\n",
+ (int) rpi, max_rpi, rpi_limit);
+
+ /*
+ * Don't try to allocate more rpi header regions if the device limit
+ * has been exhausted.
+ */
+ if ((rpi == LPFC_RPI_ALLOC_ERROR) &&
+ (phba->sli4_hba.rpi_count >= max_rpi)) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return rpi;
+ }
+
+ /*
+ * RPI header postings are not required for SLI4 ports capable of
+ * extents.
+ */
+ if (!phba->sli4_hba.rpi_hdrs_in_use) {
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ return rpi;
+ }
+
+ /*
+ * If the driver is running low on rpi resources, allocate another
+ * page now. Note that the next_rpi value is used because
+ * it represents how many are actually in use whereas max_rpi notes
+ * how many are supported max by the device.
+ */
+ rpi_remaining = phba->sli4_hba.next_rpi - phba->sli4_hba.rpi_count;
+ spin_unlock_irqrestore(&phba->hbalock, iflag);
+ if (rpi_remaining < LPFC_RPI_LOW_WATER_MARK) {
+ rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
+ if (!rpi_hdr) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2002 Error Could not grow rpi "
+ "count\n");
+ } else {
+ lrpi = rpi_hdr->start_rpi;
+ rpi_hdr->start_rpi = phba->sli4_hba.rpi_ids[lrpi];
+ lpfc_sli4_post_rpi_hdr(phba, rpi_hdr);
+ }
+ }
+
+ return rpi;
+}
+
+/**
+ * __lpfc_sli4_free_rpi - Release an rpi for reuse.
+ * @phba: pointer to lpfc hba data structure.
+ * @rpi: rpi to free
+ *
+ * This routine is invoked to release an rpi to the pool of
+ * available rpis maintained by the driver.
+ **/
+static void
+__lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi)
+{
+ /*
+ * if the rpi value indicates a prior unreg has already
+ * been done, skip the unreg.
+ */
+ if (rpi == LPFC_RPI_ALLOC_ERROR)
+ return;
+
+ if (test_and_clear_bit(rpi, phba->sli4_hba.rpi_bmask)) {
+ phba->sli4_hba.rpi_count--;
+ phba->sli4_hba.max_cfg_param.rpi_used--;
+ } else {
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_NODE | LOG_DISCOVERY,
+ "2016 rpi %x not inuse\n",
+ rpi);
+ }
+}
+
+/**
+ * lpfc_sli4_free_rpi - Release an rpi for reuse.
+ * @phba: pointer to lpfc hba data structure.
+ * @rpi: rpi to free
+ *
+ * This routine is invoked to release an rpi to the pool of
+ * available rpis maintained by the driver.
+ **/
+void
+lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi)
+{
+ spin_lock_irq(&phba->hbalock);
+ __lpfc_sli4_free_rpi(phba, rpi);
+ spin_unlock_irq(&phba->hbalock);
+}
+
+/**
+ * lpfc_sli4_remove_rpis - Remove the rpi bitmask region
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to remove the memory region that
+ * provided rpi via a bitmask.
+ **/
+void
+lpfc_sli4_remove_rpis(struct lpfc_hba *phba)
+{
+ kfree(phba->sli4_hba.rpi_bmask);
+ kfree(phba->sli4_hba.rpi_ids);
+ bf_set(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
+}
+
+/**
+ * lpfc_sli4_resume_rpi - Remove the rpi bitmask region
+ * @ndlp: pointer to lpfc nodelist data structure.
+ * @cmpl: completion call-back.
+ * @arg: data to load as MBox 'caller buffer information'
+ *
+ * This routine is invoked to remove the memory region that
+ * provided rpi via a bitmask.
+ **/
+int
+lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp,
+ void (*cmpl)(struct lpfc_hba *, LPFC_MBOXQ_t *), void *arg)
+{
+ LPFC_MBOXQ_t *mboxq;
+ struct lpfc_hba *phba = ndlp->phba;
+ int rc;
+
+ /* The port is notified of the header region via a mailbox command. */
+ mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ return -ENOMEM;
+
+ /* If cmpl assigned, then this nlp_get pairs with
+ * lpfc_mbx_cmpl_resume_rpi.
+ *
+ * Else cmpl is NULL, then this nlp_get pairs with
+ * lpfc_sli_def_mbox_cmpl.
+ */
+ if (!lpfc_nlp_get(ndlp)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2122 %s: Failed to get nlp ref\n",
+ __func__);
+ mempool_free(mboxq, phba->mbox_mem_pool);
+ return -EIO;
+ }
+
+ /* Post all rpi memory regions to the port. */
+ lpfc_resume_rpi(mboxq, ndlp);
+ if (cmpl) {
+ mboxq->mbox_cmpl = cmpl;
+ mboxq->ctx_buf = arg;
+ } else
+ mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ mboxq->ctx_ndlp = ndlp;
+ mboxq->vport = ndlp->vport;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2010 Resume RPI Mailbox failed "
+ "status %d, mbxStatus x%x\n", rc,
+ bf_get(lpfc_mqe_status, &mboxq->u.mqe));
+ lpfc_nlp_put(ndlp);
+ mempool_free(mboxq, phba->mbox_mem_pool);
+ return -EIO;
+ }
+ return 0;
+}
+
+/**
+ * lpfc_sli4_init_vpi - Initialize a vpi with the port
+ * @vport: Pointer to the vport for which the vpi is being initialized
+ *
+ * This routine is invoked to activate a vpi with the port.
+ *
+ * Returns:
+ * 0 success
+ * -Evalue otherwise
+ **/
+int
+lpfc_sli4_init_vpi(struct lpfc_vport *vport)
+{
+ LPFC_MBOXQ_t *mboxq;
+ int rc = 0;
+ int retval = MBX_SUCCESS;
+ uint32_t mbox_tmo;
+ struct lpfc_hba *phba = vport->phba;
+ mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq)
+ return -ENOMEM;
+ lpfc_init_vpi(phba, mboxq, vport->vpi);
+ mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
+ rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
+ if (rc != MBX_SUCCESS) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "2022 INIT VPI Mailbox failed "
+ "status %d, mbxStatus x%x\n", rc,
+ bf_get(lpfc_mqe_status, &mboxq->u.mqe));
+ retval = -EIO;
+ }
+ if (rc != MBX_TIMEOUT)
+ mempool_free(mboxq, vport->phba->mbox_mem_pool);
+
+ return retval;
+}
+
+/**
+ * lpfc_mbx_cmpl_add_fcf_record - add fcf mbox completion handler.
+ * @phba: pointer to lpfc hba data structure.
+ * @mboxq: Pointer to mailbox object.
+ *
+ * This routine is invoked to manually add a single FCF record. The caller
+ * must pass a completely initialized FCF_Record. This routine takes
+ * care of the nonembedded mailbox operations.
+ **/
+static void
+lpfc_mbx_cmpl_add_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
+{
+ void *virt_addr;
+ union lpfc_sli4_cfg_shdr *shdr;
+ uint32_t shdr_status, shdr_add_status;
+
+ virt_addr = mboxq->sge_array->addr[0];
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr = (union lpfc_sli4_cfg_shdr *) virt_addr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+
+ if ((shdr_status || shdr_add_status) &&
+ (shdr_status != STATUS_FCF_IN_USE))
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2558 ADD_FCF_RECORD mailbox failed with "
+ "status x%x add_status x%x\n",
+ shdr_status, shdr_add_status);
+
+ lpfc_sli4_mbox_cmd_free(phba, mboxq);
+}
+
+/**
+ * lpfc_sli4_add_fcf_record - Manually add an FCF Record.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_record: pointer to the initialized fcf record to add.
+ *
+ * This routine is invoked to manually add a single FCF record. The caller
+ * must pass a completely initialized FCF_Record. This routine takes
+ * care of the nonembedded mailbox operations.
+ **/
+int
+lpfc_sli4_add_fcf_record(struct lpfc_hba *phba, struct fcf_record *fcf_record)
+{
+ int rc = 0;
+ LPFC_MBOXQ_t *mboxq;
+ uint8_t *bytep;
+ void *virt_addr;
+ struct lpfc_mbx_sge sge;
+ uint32_t alloc_len, req_len;
+ uint32_t fcfindex;
+
+ mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2009 Failed to allocate mbox for ADD_FCF cmd\n");
+ return -ENOMEM;
+ }
+
+ req_len = sizeof(struct fcf_record) + sizeof(union lpfc_sli4_cfg_shdr) +
+ sizeof(uint32_t);
+
+ /* Allocate DMA memory and set up the non-embedded mailbox command */
+ alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_ADD_FCF,
+ req_len, LPFC_SLI4_MBX_NEMBED);
+ if (alloc_len < req_len) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2523 Allocated DMA memory size (x%x) is "
+ "less than the requested DMA memory "
+ "size (x%x)\n", alloc_len, req_len);
+ lpfc_sli4_mbox_cmd_free(phba, mboxq);
+ return -ENOMEM;
+ }
+
+ /*
+ * Get the first SGE entry from the non-embedded DMA memory. This
+ * routine only uses a single SGE.
+ */
+ lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
+ virt_addr = mboxq->sge_array->addr[0];
+ /*
+ * Configure the FCF record for FCFI 0. This is the driver's
+ * hardcoded default and gets used in nonFIP mode.
+ */
+ fcfindex = bf_get(lpfc_fcf_record_fcf_index, fcf_record);
+ bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
+ lpfc_sli_pcimem_bcopy(&fcfindex, bytep, sizeof(uint32_t));
+
+ /*
+ * Copy the fcf_index and the FCF Record Data. The data starts after
+ * the FCoE header plus word10. The data copy needs to be endian
+ * correct.
+ */
+ bytep += sizeof(uint32_t);
+ lpfc_sli_pcimem_bcopy(fcf_record, bytep, sizeof(struct fcf_record));
+ mboxq->vport = phba->pport;
+ mboxq->mbox_cmpl = lpfc_mbx_cmpl_add_fcf_record;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2515 ADD_FCF_RECORD mailbox failed with "
+ "status 0x%x\n", rc);
+ lpfc_sli4_mbox_cmd_free(phba, mboxq);
+ rc = -EIO;
+ } else
+ rc = 0;
+
+ return rc;
+}
+
+/**
+ * lpfc_sli4_build_dflt_fcf_record - Build the driver's default FCF Record.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_record: pointer to the fcf record to write the default data.
+ * @fcf_index: FCF table entry index.
+ *
+ * This routine is invoked to build the driver's default FCF record. The
+ * values used are hardcoded. This routine handles memory initialization.
+ *
+ **/
+void
+lpfc_sli4_build_dflt_fcf_record(struct lpfc_hba *phba,
+ struct fcf_record *fcf_record,
+ uint16_t fcf_index)
+{
+ memset(fcf_record, 0, sizeof(struct fcf_record));
+ fcf_record->max_rcv_size = LPFC_FCOE_MAX_RCV_SIZE;
+ fcf_record->fka_adv_period = LPFC_FCOE_FKA_ADV_PER;
+ fcf_record->fip_priority = LPFC_FCOE_FIP_PRIORITY;
+ bf_set(lpfc_fcf_record_mac_0, fcf_record, phba->fc_map[0]);
+ bf_set(lpfc_fcf_record_mac_1, fcf_record, phba->fc_map[1]);
+ bf_set(lpfc_fcf_record_mac_2, fcf_record, phba->fc_map[2]);
+ bf_set(lpfc_fcf_record_mac_3, fcf_record, LPFC_FCOE_FCF_MAC3);
+ bf_set(lpfc_fcf_record_mac_4, fcf_record, LPFC_FCOE_FCF_MAC4);
+ bf_set(lpfc_fcf_record_mac_5, fcf_record, LPFC_FCOE_FCF_MAC5);
+ bf_set(lpfc_fcf_record_fc_map_0, fcf_record, phba->fc_map[0]);
+ bf_set(lpfc_fcf_record_fc_map_1, fcf_record, phba->fc_map[1]);
+ bf_set(lpfc_fcf_record_fc_map_2, fcf_record, phba->fc_map[2]);
+ bf_set(lpfc_fcf_record_fcf_valid, fcf_record, 1);
+ bf_set(lpfc_fcf_record_fcf_avail, fcf_record, 1);
+ bf_set(lpfc_fcf_record_fcf_index, fcf_record, fcf_index);
+ bf_set(lpfc_fcf_record_mac_addr_prov, fcf_record,
+ LPFC_FCF_FPMA | LPFC_FCF_SPMA);
+ /* Set the VLAN bit map */
+ if (phba->valid_vlan) {
+ fcf_record->vlan_bitmap[phba->vlan_id / 8]
+ = 1 << (phba->vlan_id % 8);
+ }
+}
+
+/**
+ * lpfc_sli4_fcf_scan_read_fcf_rec - Read hba fcf record for fcf scan.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_index: FCF table entry offset.
+ *
+ * This routine is invoked to scan the entire FCF table by reading FCF
+ * record and processing it one at a time starting from the @fcf_index
+ * for initial FCF discovery or fast FCF failover rediscovery.
+ *
+ * Return 0 if the mailbox command is submitted successfully, none 0
+ * otherwise.
+ **/
+int
+lpfc_sli4_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+ int rc = 0, error;
+ LPFC_MBOXQ_t *mboxq;
+
+ phba->fcoe_eventtag_at_fcf_scan = phba->fcoe_eventtag;
+ phba->fcoe_cvl_eventtag_attn = phba->fcoe_cvl_eventtag;
+ mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2000 Failed to allocate mbox for "
+ "READ_FCF cmd\n");
+ error = -ENOMEM;
+ goto fail_fcf_scan;
+ }
+ /* Construct the read FCF record mailbox command */
+ rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
+ if (rc) {
+ error = -EINVAL;
+ goto fail_fcf_scan;
+ }
+ /* Issue the mailbox command asynchronously */
+ mboxq->vport = phba->pport;
+ mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_scan_read_fcf_rec;
+
+ spin_lock_irq(&phba->hbalock);
+ phba->hba_flag |= FCF_TS_INPROG;
+ spin_unlock_irq(&phba->hbalock);
+
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED)
+ error = -EIO;
+ else {
+ /* Reset eligible FCF count for new scan */
+ if (fcf_index == LPFC_FCOE_FCF_GET_FIRST)
+ phba->fcf.eligible_fcf_cnt = 0;
+ error = 0;
+ }
+fail_fcf_scan:
+ if (error) {
+ if (mboxq)
+ lpfc_sli4_mbox_cmd_free(phba, mboxq);
+ /* FCF scan failed, clear FCF_TS_INPROG flag */
+ spin_lock_irq(&phba->hbalock);
+ phba->hba_flag &= ~FCF_TS_INPROG;
+ spin_unlock_irq(&phba->hbalock);
+ }
+ return error;
+}
+
+/**
+ * lpfc_sli4_fcf_rr_read_fcf_rec - Read hba fcf record for roundrobin fcf.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_index: FCF table entry offset.
+ *
+ * This routine is invoked to read an FCF record indicated by @fcf_index
+ * and to use it for FLOGI roundrobin FCF failover.
+ *
+ * Return 0 if the mailbox command is submitted successfully, none 0
+ * otherwise.
+ **/
+int
+lpfc_sli4_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+ int rc = 0, error;
+ LPFC_MBOXQ_t *mboxq;
+
+ mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT,
+ "2763 Failed to allocate mbox for "
+ "READ_FCF cmd\n");
+ error = -ENOMEM;
+ goto fail_fcf_read;
+ }
+ /* Construct the read FCF record mailbox command */
+ rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
+ if (rc) {
+ error = -EINVAL;
+ goto fail_fcf_read;
+ }
+ /* Issue the mailbox command asynchronously */
+ mboxq->vport = phba->pport;
+ mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_rr_read_fcf_rec;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED)
+ error = -EIO;
+ else
+ error = 0;
+
+fail_fcf_read:
+ if (error && mboxq)
+ lpfc_sli4_mbox_cmd_free(phba, mboxq);
+ return error;
+}
+
+/**
+ * lpfc_sli4_read_fcf_rec - Read hba fcf record for update eligible fcf bmask.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_index: FCF table entry offset.
+ *
+ * This routine is invoked to read an FCF record indicated by @fcf_index to
+ * determine whether it's eligible for FLOGI roundrobin failover list.
+ *
+ * Return 0 if the mailbox command is submitted successfully, none 0
+ * otherwise.
+ **/
+int
+lpfc_sli4_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+ int rc = 0, error;
+ LPFC_MBOXQ_t *mboxq;
+
+ mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT,
+ "2758 Failed to allocate mbox for "
+ "READ_FCF cmd\n");
+ error = -ENOMEM;
+ goto fail_fcf_read;
+ }
+ /* Construct the read FCF record mailbox command */
+ rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
+ if (rc) {
+ error = -EINVAL;
+ goto fail_fcf_read;
+ }
+ /* Issue the mailbox command asynchronously */
+ mboxq->vport = phba->pport;
+ mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_rec;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED)
+ error = -EIO;
+ else
+ error = 0;
+
+fail_fcf_read:
+ if (error && mboxq)
+ lpfc_sli4_mbox_cmd_free(phba, mboxq);
+ return error;
+}
+
+/**
+ * lpfc_check_next_fcf_pri_level
+ * @phba: pointer to the lpfc_hba struct for this port.
+ * This routine is called from the lpfc_sli4_fcf_rr_next_index_get
+ * routine when the rr_bmask is empty. The FCF indecies are put into the
+ * rr_bmask based on their priority level. Starting from the highest priority
+ * to the lowest. The most likely FCF candidate will be in the highest
+ * priority group. When this routine is called it searches the fcf_pri list for
+ * next lowest priority group and repopulates the rr_bmask with only those
+ * fcf_indexes.
+ * returns:
+ * 1=success 0=failure
+ **/
+static int
+lpfc_check_next_fcf_pri_level(struct lpfc_hba *phba)
+{
+ uint16_t next_fcf_pri;
+ uint16_t last_index;
+ struct lpfc_fcf_pri *fcf_pri;
+ int rc;
+ int ret = 0;
+
+ last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
+ LPFC_SLI4_FCF_TBL_INDX_MAX);
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+ "3060 Last IDX %d\n", last_index);
+
+ /* Verify the priority list has 2 or more entries */
+ spin_lock_irq(&phba->hbalock);
+ if (list_empty(&phba->fcf.fcf_pri_list) ||
+ list_is_singular(&phba->fcf.fcf_pri_list)) {
+ spin_unlock_irq(&phba->hbalock);
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
+ "3061 Last IDX %d\n", last_index);
+ return 0; /* Empty rr list */
+ }
+ spin_unlock_irq(&phba->hbalock);
+
+ next_fcf_pri = 0;
+ /*
+ * Clear the rr_bmask and set all of the bits that are at this
+ * priority.
+ */
+ memset(phba->fcf.fcf_rr_bmask, 0,
+ sizeof(*phba->fcf.fcf_rr_bmask));
+ spin_lock_irq(&phba->hbalock);
+ list_for_each_entry(fcf_pri, &phba->fcf.fcf_pri_list, list) {
+ if (fcf_pri->fcf_rec.flag & LPFC_FCF_FLOGI_FAILED)
+ continue;
+ /*
+ * the 1st priority that has not FLOGI failed
+ * will be the highest.
+ */
+ if (!next_fcf_pri)
+ next_fcf_pri = fcf_pri->fcf_rec.priority;
+ spin_unlock_irq(&phba->hbalock);
+ if (fcf_pri->fcf_rec.priority == next_fcf_pri) {
+ rc = lpfc_sli4_fcf_rr_index_set(phba,
+ fcf_pri->fcf_rec.fcf_index);
+ if (rc)
+ return 0;
+ }
+ spin_lock_irq(&phba->hbalock);
+ }
+ /*
+ * if next_fcf_pri was not set above and the list is not empty then
+ * we have failed flogis on all of them. So reset flogi failed
+ * and start at the beginning.
+ */
+ if (!next_fcf_pri && !list_empty(&phba->fcf.fcf_pri_list)) {
+ list_for_each_entry(fcf_pri, &phba->fcf.fcf_pri_list, list) {
+ fcf_pri->fcf_rec.flag &= ~LPFC_FCF_FLOGI_FAILED;
+ /*
+ * the 1st priority that has not FLOGI failed
+ * will be the highest.
+ */
+ if (!next_fcf_pri)
+ next_fcf_pri = fcf_pri->fcf_rec.priority;
+ spin_unlock_irq(&phba->hbalock);
+ if (fcf_pri->fcf_rec.priority == next_fcf_pri) {
+ rc = lpfc_sli4_fcf_rr_index_set(phba,
+ fcf_pri->fcf_rec.fcf_index);
+ if (rc)
+ return 0;
+ }
+ spin_lock_irq(&phba->hbalock);
+ }
+ } else
+ ret = 1;
+ spin_unlock_irq(&phba->hbalock);
+
+ return ret;
+}
+/**
+ * lpfc_sli4_fcf_rr_next_index_get - Get next eligible fcf record index
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is to get the next eligible FCF record index in a round
+ * robin fashion. If the next eligible FCF record index equals to the
+ * initial roundrobin FCF record index, LPFC_FCOE_FCF_NEXT_NONE (0xFFFF)
+ * shall be returned, otherwise, the next eligible FCF record's index
+ * shall be returned.
+ **/
+uint16_t
+lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *phba)
+{
+ uint16_t next_fcf_index;
+
+initial_priority:
+ /* Search start from next bit of currently registered FCF index */
+ next_fcf_index = phba->fcf.current_rec.fcf_indx;
+
+next_priority:
+ /* Determine the next fcf index to check */
+ next_fcf_index = (next_fcf_index + 1) % LPFC_SLI4_FCF_TBL_INDX_MAX;
+ next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask,
+ LPFC_SLI4_FCF_TBL_INDX_MAX,
+ next_fcf_index);
+
+ /* Wrap around condition on phba->fcf.fcf_rr_bmask */
+ if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
+ /*
+ * If we have wrapped then we need to clear the bits that
+ * have been tested so that we can detect when we should
+ * change the priority level.
+ */
+ next_fcf_index = find_first_bit(phba->fcf.fcf_rr_bmask,
+ LPFC_SLI4_FCF_TBL_INDX_MAX);
+ }
+
+
+ /* Check roundrobin failover list empty condition */
+ if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX ||
+ next_fcf_index == phba->fcf.current_rec.fcf_indx) {
+ /*
+ * If next fcf index is not found check if there are lower
+ * Priority level fcf's in the fcf_priority list.
+ * Set up the rr_bmask with all of the avaiable fcf bits
+ * at that level and continue the selection process.
+ */
+ if (lpfc_check_next_fcf_pri_level(phba))
+ goto initial_priority;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
+ "2844 No roundrobin failover FCF available\n");
+
+ return LPFC_FCOE_FCF_NEXT_NONE;
+ }
+
+ if (next_fcf_index < LPFC_SLI4_FCF_TBL_INDX_MAX &&
+ phba->fcf.fcf_pri[next_fcf_index].fcf_rec.flag &
+ LPFC_FCF_FLOGI_FAILED) {
+ if (list_is_singular(&phba->fcf.fcf_pri_list))
+ return LPFC_FCOE_FCF_NEXT_NONE;
+
+ goto next_priority;
+ }
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+ "2845 Get next roundrobin failover FCF (x%x)\n",
+ next_fcf_index);
+
+ return next_fcf_index;
+}
+
+/**
+ * lpfc_sli4_fcf_rr_index_set - Set bmask with eligible fcf record index
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_index: index into the FCF table to 'set'
+ *
+ * This routine sets the FCF record index in to the eligible bmask for
+ * roundrobin failover search. It checks to make sure that the index
+ * does not go beyond the range of the driver allocated bmask dimension
+ * before setting the bit.
+ *
+ * Returns 0 if the index bit successfully set, otherwise, it returns
+ * -EINVAL.
+ **/
+int
+lpfc_sli4_fcf_rr_index_set(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+ if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
+ "2610 FCF (x%x) reached driver's book "
+ "keeping dimension:x%x\n",
+ fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX);
+ return -EINVAL;
+ }
+ /* Set the eligible FCF record index bmask */
+ set_bit(fcf_index, phba->fcf.fcf_rr_bmask);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+ "2790 Set FCF (x%x) to roundrobin FCF failover "
+ "bmask\n", fcf_index);
+
+ return 0;
+}
+
+/**
+ * lpfc_sli4_fcf_rr_index_clear - Clear bmask from eligible fcf record index
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_index: index into the FCF table to 'clear'
+ *
+ * This routine clears the FCF record index from the eligible bmask for
+ * roundrobin failover search. It checks to make sure that the index
+ * does not go beyond the range of the driver allocated bmask dimension
+ * before clearing the bit.
+ **/
+void
+lpfc_sli4_fcf_rr_index_clear(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+ struct lpfc_fcf_pri *fcf_pri, *fcf_pri_next;
+ if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
+ "2762 FCF (x%x) reached driver's book "
+ "keeping dimension:x%x\n",
+ fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX);
+ return;
+ }
+ /* Clear the eligible FCF record index bmask */
+ spin_lock_irq(&phba->hbalock);
+ list_for_each_entry_safe(fcf_pri, fcf_pri_next, &phba->fcf.fcf_pri_list,
+ list) {
+ if (fcf_pri->fcf_rec.fcf_index == fcf_index) {
+ list_del_init(&fcf_pri->list);
+ break;
+ }
+ }
+ spin_unlock_irq(&phba->hbalock);
+ clear_bit(fcf_index, phba->fcf.fcf_rr_bmask);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+ "2791 Clear FCF (x%x) from roundrobin failover "
+ "bmask\n", fcf_index);
+}
+
+/**
+ * lpfc_mbx_cmpl_redisc_fcf_table - completion routine for rediscover FCF table
+ * @phba: pointer to lpfc hba data structure.
+ * @mbox: An allocated pointer to type LPFC_MBOXQ_t
+ *
+ * This routine is the completion routine for the rediscover FCF table mailbox
+ * command. If the mailbox command returned failure, it will try to stop the
+ * FCF rediscover wait timer.
+ **/
+static void
+lpfc_mbx_cmpl_redisc_fcf_table(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox)
+{
+ struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf;
+ uint32_t shdr_status, shdr_add_status;
+
+ redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl;
+
+ shdr_status = bf_get(lpfc_mbox_hdr_status,
+ &redisc_fcf->header.cfg_shdr.response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
+ &redisc_fcf->header.cfg_shdr.response);
+ if (shdr_status || shdr_add_status) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
+ "2746 Requesting for FCF rediscovery failed "
+ "status x%x add_status x%x\n",
+ shdr_status, shdr_add_status);
+ if (phba->fcf.fcf_flag & FCF_ACVL_DISC) {
+ spin_lock_irq(&phba->hbalock);
+ phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
+ spin_unlock_irq(&phba->hbalock);
+ /*
+ * CVL event triggered FCF rediscover request failed,
+ * last resort to re-try current registered FCF entry.
+ */
+ lpfc_retry_pport_discovery(phba);
+ } else {
+ spin_lock_irq(&phba->hbalock);
+ phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
+ spin_unlock_irq(&phba->hbalock);
+ /*
+ * DEAD FCF event triggered FCF rediscover request
+ * failed, last resort to fail over as a link down
+ * to FCF registration.
+ */
+ lpfc_sli4_fcf_dead_failthrough(phba);
+ }
+ } else {
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+ "2775 Start FCF rediscover quiescent timer\n");
+ /*
+ * Start FCF rediscovery wait timer for pending FCF
+ * before rescan FCF record table.
+ */
+ lpfc_fcf_redisc_wait_start_timer(phba);
+ }
+
+ mempool_free(mbox, phba->mbox_mem_pool);
+}
+
+/**
+ * lpfc_sli4_redisc_fcf_table - Request to rediscover entire FCF table by port.
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to request for rediscovery of the entire FCF table
+ * by the port.
+ **/
+int
+lpfc_sli4_redisc_fcf_table(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *mbox;
+ struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf;
+ int rc, length;
+
+ /* Cancel retry delay timers to all vports before FCF rediscover */
+ lpfc_cancel_all_vport_retry_delay_timer(phba);
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2745 Failed to allocate mbox for "
+ "requesting FCF rediscover.\n");
+ return -ENOMEM;
+ }
+
+ length = (sizeof(struct lpfc_mbx_redisc_fcf_tbl) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+ LPFC_MBOX_OPCODE_FCOE_REDISCOVER_FCF,
+ length, LPFC_SLI4_MBX_EMBED);
+
+ redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl;
+ /* Set count to 0 for invalidating the entire FCF database */
+ bf_set(lpfc_mbx_redisc_fcf_count, redisc_fcf, 0);
+
+ /* Issue the mailbox command asynchronously */
+ mbox->vport = phba->pport;
+ mbox->mbox_cmpl = lpfc_mbx_cmpl_redisc_fcf_table;
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+
+ if (rc == MBX_NOT_FINISHED) {
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return -EIO;
+ }
+ return 0;
+}
+
+/**
+ * lpfc_sli4_fcf_dead_failthrough - Failthrough routine to fcf dead event
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This function is the failover routine as a last resort to the FCF DEAD
+ * event when driver failed to perform fast FCF failover.
+ **/
+void
+lpfc_sli4_fcf_dead_failthrough(struct lpfc_hba *phba)
+{
+ uint32_t link_state;
+
+ /*
+ * Last resort as FCF DEAD event failover will treat this as
+ * a link down, but save the link state because we don't want
+ * it to be changed to Link Down unless it is already down.
+ */
+ link_state = phba->link_state;
+ lpfc_linkdown(phba);
+ phba->link_state = link_state;
+
+ /* Unregister FCF if no devices connected to it */
+ lpfc_unregister_unused_fcf(phba);
+}
+
+/**
+ * lpfc_sli_get_config_region23 - Get sli3 port region 23 data.
+ * @phba: pointer to lpfc hba data structure.
+ * @rgn23_data: pointer to configure region 23 data.
+ *
+ * This function gets SLI3 port configure region 23 data through memory dump
+ * mailbox command. When it successfully retrieves data, the size of the data
+ * will be returned, otherwise, 0 will be returned.
+ **/
+static uint32_t
+lpfc_sli_get_config_region23(struct lpfc_hba *phba, char *rgn23_data)
+{
+ LPFC_MBOXQ_t *pmb = NULL;
+ MAILBOX_t *mb;
+ uint32_t offset = 0;
+ int rc;
+
+ if (!rgn23_data)
+ return 0;
+
+ pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!pmb) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2600 failed to allocate mailbox memory\n");
+ return 0;
+ }
+ mb = &pmb->u.mb;
+
+ do {
+ lpfc_dump_mem(phba, pmb, offset, DMP_REGION_23);
+ rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
+
+ if (rc != MBX_SUCCESS) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+ "2601 failed to read config "
+ "region 23, rc 0x%x Status 0x%x\n",
+ rc, mb->mbxStatus);
+ mb->un.varDmp.word_cnt = 0;
+ }
+ /*
+ * dump mem may return a zero when finished or we got a
+ * mailbox error, either way we are done.
+ */
+ if (mb->un.varDmp.word_cnt == 0)
+ break;
+
+ if (mb->un.varDmp.word_cnt > DMP_RGN23_SIZE - offset)
+ mb->un.varDmp.word_cnt = DMP_RGN23_SIZE - offset;
+
+ lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
+ rgn23_data + offset,
+ mb->un.varDmp.word_cnt);
+ offset += mb->un.varDmp.word_cnt;
+ } while (mb->un.varDmp.word_cnt && offset < DMP_RGN23_SIZE);
+
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return offset;
+}
+
+/**
+ * lpfc_sli4_get_config_region23 - Get sli4 port region 23 data.
+ * @phba: pointer to lpfc hba data structure.
+ * @rgn23_data: pointer to configure region 23 data.
+ *
+ * This function gets SLI4 port configure region 23 data through memory dump
+ * mailbox command. When it successfully retrieves data, the size of the data
+ * will be returned, otherwise, 0 will be returned.
+ **/
+static uint32_t
+lpfc_sli4_get_config_region23(struct lpfc_hba *phba, char *rgn23_data)
+{
+ LPFC_MBOXQ_t *mboxq = NULL;
+ struct lpfc_dmabuf *mp = NULL;
+ struct lpfc_mqe *mqe;
+ uint32_t data_length = 0;
+ int rc;
+
+ if (!rgn23_data)
+ return 0;
+
+ mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3105 failed to allocate mailbox memory\n");
+ return 0;
+ }
+
+ if (lpfc_sli4_dump_cfg_rg23(phba, mboxq))
+ goto out;
+ mqe = &mboxq->u.mqe;
+ mp = (struct lpfc_dmabuf *)mboxq->ctx_buf;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+ if (rc)
+ goto out;
+ data_length = mqe->un.mb_words[5];
+ if (data_length == 0)
+ goto out;
+ if (data_length > DMP_RGN23_SIZE) {
+ data_length = 0;
+ goto out;
+ }
+ lpfc_sli_pcimem_bcopy((char *)mp->virt, rgn23_data, data_length);
+out:
+ lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
+ return data_length;
+}
+
+/**
+ * lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled.
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This function read region 23 and parse TLV for port status to
+ * decide if the user disaled the port. If the TLV indicates the
+ * port is disabled, the hba_flag is set accordingly.
+ **/
+void
+lpfc_sli_read_link_ste(struct lpfc_hba *phba)
+{
+ uint8_t *rgn23_data = NULL;
+ uint32_t if_type, data_size, sub_tlv_len, tlv_offset;
+ uint32_t offset = 0;
+
+ /* Get adapter Region 23 data */
+ rgn23_data = kzalloc(DMP_RGN23_SIZE, GFP_KERNEL);
+ if (!rgn23_data)
+ goto out;
+
+ if (phba->sli_rev < LPFC_SLI_REV4)
+ data_size = lpfc_sli_get_config_region23(phba, rgn23_data);
+ else {
+ if_type = bf_get(lpfc_sli_intf_if_type,
+ &phba->sli4_hba.sli_intf);
+ if (if_type == LPFC_SLI_INTF_IF_TYPE_0)
+ goto out;
+ data_size = lpfc_sli4_get_config_region23(phba, rgn23_data);
+ }
+
+ if (!data_size)
+ goto out;
+
+ /* Check the region signature first */
+ if (memcmp(&rgn23_data[offset], LPFC_REGION23_SIGNATURE, 4)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2619 Config region 23 has bad signature\n");
+ goto out;
+ }
+ offset += 4;
+
+ /* Check the data structure version */
+ if (rgn23_data[offset] != LPFC_REGION23_VERSION) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2620 Config region 23 has bad version\n");
+ goto out;
+ }
+ offset += 4;
+
+ /* Parse TLV entries in the region */
+ while (offset < data_size) {
+ if (rgn23_data[offset] == LPFC_REGION23_LAST_REC)
+ break;
+ /*
+ * If the TLV is not driver specific TLV or driver id is
+ * not linux driver id, skip the record.
+ */
+ if ((rgn23_data[offset] != DRIVER_SPECIFIC_TYPE) ||
+ (rgn23_data[offset + 2] != LINUX_DRIVER_ID) ||
+ (rgn23_data[offset + 3] != 0)) {
+ offset += rgn23_data[offset + 1] * 4 + 4;
+ continue;
+ }
+
+ /* Driver found a driver specific TLV in the config region */
+ sub_tlv_len = rgn23_data[offset + 1] * 4;
+ offset += 4;
+ tlv_offset = 0;
+
+ /*
+ * Search for configured port state sub-TLV.
+ */
+ while ((offset < data_size) &&
+ (tlv_offset < sub_tlv_len)) {
+ if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) {
+ offset += 4;
+ tlv_offset += 4;
+ break;
+ }
+ if (rgn23_data[offset] != PORT_STE_TYPE) {
+ offset += rgn23_data[offset + 1] * 4 + 4;
+ tlv_offset += rgn23_data[offset + 1] * 4 + 4;
+ continue;
+ }
+
+ /* This HBA contains PORT_STE configured */
+ if (!rgn23_data[offset + 2])
+ phba->hba_flag |= LINK_DISABLED;
+
+ goto out;
+ }
+ }
+
+out:
+ kfree(rgn23_data);
+ return;
+}
+
+/**
+ * lpfc_log_fw_write_cmpl - logs firmware write completion status
+ * @phba: pointer to lpfc hba data structure
+ * @shdr_status: wr_object rsp's status field
+ * @shdr_add_status: wr_object rsp's add_status field
+ * @shdr_add_status_2: wr_object rsp's add_status_2 field
+ * @shdr_change_status: wr_object rsp's change_status field
+ * @shdr_csf: wr_object rsp's csf bit
+ *
+ * This routine is intended to be called after a firmware write completes.
+ * It will log next action items to be performed by the user to instantiate
+ * the newly downloaded firmware or reason for incompatibility.
+ **/
+static void
+lpfc_log_fw_write_cmpl(struct lpfc_hba *phba, u32 shdr_status,
+ u32 shdr_add_status, u32 shdr_add_status_2,
+ u32 shdr_change_status, u32 shdr_csf)
+{
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "4198 %s: flash_id x%02x, asic_rev x%02x, "
+ "status x%02x, add_status x%02x, add_status_2 x%02x, "
+ "change_status x%02x, csf %01x\n", __func__,
+ phba->sli4_hba.flash_id, phba->sli4_hba.asic_rev,
+ shdr_status, shdr_add_status, shdr_add_status_2,
+ shdr_change_status, shdr_csf);
+
+ if (shdr_add_status == LPFC_ADD_STATUS_INCOMPAT_OBJ) {
+ switch (shdr_add_status_2) {
+ case LPFC_ADD_STATUS_2_INCOMPAT_FLASH:
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+ "4199 Firmware write failed: "
+ "image incompatible with flash x%02x\n",
+ phba->sli4_hba.flash_id);
+ break;
+ case LPFC_ADD_STATUS_2_INCORRECT_ASIC:
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+ "4200 Firmware write failed: "
+ "image incompatible with ASIC "
+ "architecture x%02x\n",
+ phba->sli4_hba.asic_rev);
+ break;
+ default:
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+ "4210 Firmware write failed: "
+ "add_status_2 x%02x\n",
+ shdr_add_status_2);
+ break;
+ }
+ } else if (!shdr_status && !shdr_add_status) {
+ if (shdr_change_status == LPFC_CHANGE_STATUS_FW_RESET ||
+ shdr_change_status == LPFC_CHANGE_STATUS_PORT_MIGRATION) {
+ if (shdr_csf)
+ shdr_change_status =
+ LPFC_CHANGE_STATUS_PCI_RESET;
+ }
+
+ switch (shdr_change_status) {
+ case (LPFC_CHANGE_STATUS_PHYS_DEV_RESET):
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "3198 Firmware write complete: System "
+ "reboot required to instantiate\n");
+ break;
+ case (LPFC_CHANGE_STATUS_FW_RESET):
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "3199 Firmware write complete: "
+ "Firmware reset required to "
+ "instantiate\n");
+ break;
+ case (LPFC_CHANGE_STATUS_PORT_MIGRATION):
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "3200 Firmware write complete: Port "
+ "Migration or PCI Reset required to "
+ "instantiate\n");
+ break;
+ case (LPFC_CHANGE_STATUS_PCI_RESET):
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+ "3201 Firmware write complete: PCI "
+ "Reset required to instantiate\n");
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+/**
+ * lpfc_wr_object - write an object to the firmware
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @dmabuf_list: list of dmabufs to write to the port.
+ * @size: the total byte value of the objects to write to the port.
+ * @offset: the current offset to be used to start the transfer.
+ *
+ * This routine will create a wr_object mailbox command to send to the port.
+ * the mailbox command will be constructed using the dma buffers described in
+ * @dmabuf_list to create a list of BDEs. This routine will fill in as many
+ * BDEs that the imbedded mailbox can support. The @offset variable will be
+ * used to indicate the starting offset of the transfer and will also return
+ * the offset after the write object mailbox has completed. @size is used to
+ * determine the end of the object and whether the eof bit should be set.
+ *
+ * Return 0 is successful and offset will contain the the new offset to use
+ * for the next write.
+ * Return negative value for error cases.
+ **/
+int
+lpfc_wr_object(struct lpfc_hba *phba, struct list_head *dmabuf_list,
+ uint32_t size, uint32_t *offset)
+{
+ struct lpfc_mbx_wr_object *wr_object;
+ LPFC_MBOXQ_t *mbox;
+ int rc = 0, i = 0;
+ int mbox_status = 0;
+ uint32_t shdr_status, shdr_add_status, shdr_add_status_2;
+ uint32_t shdr_change_status = 0, shdr_csf = 0;
+ uint32_t mbox_tmo;
+ struct lpfc_dmabuf *dmabuf;
+ uint32_t written = 0;
+ bool check_change_status = false;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_WRITE_OBJECT,
+ sizeof(struct lpfc_mbx_wr_object) -
+ sizeof(struct lpfc_sli4_cfg_mhdr), LPFC_SLI4_MBX_EMBED);
+
+ wr_object = (struct lpfc_mbx_wr_object *)&mbox->u.mqe.un.wr_object;
+ wr_object->u.request.write_offset = *offset;
+ sprintf((uint8_t *)wr_object->u.request.object_name, "/");
+ wr_object->u.request.object_name[0] =
+ cpu_to_le32(wr_object->u.request.object_name[0]);
+ bf_set(lpfc_wr_object_eof, &wr_object->u.request, 0);
+ list_for_each_entry(dmabuf, dmabuf_list, list) {
+ if (i >= LPFC_MBX_WR_CONFIG_MAX_BDE || written >= size)
+ break;
+ wr_object->u.request.bde[i].addrLow = putPaddrLow(dmabuf->phys);
+ wr_object->u.request.bde[i].addrHigh =
+ putPaddrHigh(dmabuf->phys);
+ if (written + SLI4_PAGE_SIZE >= size) {
+ wr_object->u.request.bde[i].tus.f.bdeSize =
+ (size - written);
+ written += (size - written);
+ bf_set(lpfc_wr_object_eof, &wr_object->u.request, 1);
+ bf_set(lpfc_wr_object_eas, &wr_object->u.request, 1);
+ check_change_status = true;
+ } else {
+ wr_object->u.request.bde[i].tus.f.bdeSize =
+ SLI4_PAGE_SIZE;
+ written += SLI4_PAGE_SIZE;
+ }
+ i++;
+ }
+ wr_object->u.request.bde_count = i;
+ bf_set(lpfc_wr_object_write_length, &wr_object->u.request, written);
+ if (!phba->sli4_hba.intr_enable)
+ mbox_status = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ else {
+ mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
+ mbox_status = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+ }
+
+ /* The mbox status needs to be maintained to detect MBOX_TIMEOUT. */
+ rc = mbox_status;
+
+ /* The IOCTL status is embedded in the mailbox subheader. */
+ shdr_status = bf_get(lpfc_mbox_hdr_status,
+ &wr_object->header.cfg_shdr.response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
+ &wr_object->header.cfg_shdr.response);
+ shdr_add_status_2 = bf_get(lpfc_mbox_hdr_add_status_2,
+ &wr_object->header.cfg_shdr.response);
+ if (check_change_status) {
+ shdr_change_status = bf_get(lpfc_wr_object_change_status,
+ &wr_object->u.response);
+ shdr_csf = bf_get(lpfc_wr_object_csf,
+ &wr_object->u.response);
+ }
+
+ if (shdr_status || shdr_add_status || shdr_add_status_2 || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3025 Write Object mailbox failed with "
+ "status x%x add_status x%x, add_status_2 x%x, "
+ "mbx status x%x\n",
+ shdr_status, shdr_add_status, shdr_add_status_2,
+ rc);
+ rc = -ENXIO;
+ *offset = shdr_add_status;
+ } else {
+ *offset += wr_object->u.response.actual_write_length;
+ }
+
+ if (rc || check_change_status)
+ lpfc_log_fw_write_cmpl(phba, shdr_status, shdr_add_status,
+ shdr_add_status_2, shdr_change_status,
+ shdr_csf);
+
+ if (!phba->sli4_hba.intr_enable)
+ mempool_free(mbox, phba->mbox_mem_pool);
+ else if (mbox_status != MBX_TIMEOUT)
+ mempool_free(mbox, phba->mbox_mem_pool);
+
+ return rc;
+}
+
+/**
+ * lpfc_cleanup_pending_mbox - Free up vport discovery mailbox commands.
+ * @vport: pointer to vport data structure.
+ *
+ * This function iterate through the mailboxq and clean up all REG_LOGIN
+ * and REG_VPI mailbox commands associated with the vport. This function
+ * is called when driver want to restart discovery of the vport due to
+ * a Clear Virtual Link event.
+ **/
+void
+lpfc_cleanup_pending_mbox(struct lpfc_vport *vport)
+{
+ struct lpfc_hba *phba = vport->phba;
+ LPFC_MBOXQ_t *mb, *nextmb;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_nodelist *act_mbx_ndlp = NULL;
+ LIST_HEAD(mbox_cmd_list);
+ uint8_t restart_loop;
+
+ /* Clean up internally queued mailbox commands with the vport */
+ spin_lock_irq(&phba->hbalock);
+ list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
+ if (mb->vport != vport)
+ continue;
+
+ if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) &&
+ (mb->u.mb.mbxCommand != MBX_REG_VPI))
+ continue;
+
+ list_move_tail(&mb->list, &mbox_cmd_list);
+ }
+ /* Clean up active mailbox command with the vport */
+ mb = phba->sli.mbox_active;
+ if (mb && (mb->vport == vport)) {
+ if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) ||
+ (mb->u.mb.mbxCommand == MBX_REG_VPI))
+ mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
+ act_mbx_ndlp = (struct lpfc_nodelist *)mb->ctx_ndlp;
+
+ /* This reference is local to this routine. The
+ * reference is removed at routine exit.
+ */
+ act_mbx_ndlp = lpfc_nlp_get(act_mbx_ndlp);
+
+ /* Unregister the RPI when mailbox complete */
+ mb->mbox_flag |= LPFC_MBX_IMED_UNREG;
+ }
+ }
+ /* Cleanup any mailbox completions which are not yet processed */
+ do {
+ restart_loop = 0;
+ list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
+ /*
+ * If this mailox is already processed or it is
+ * for another vport ignore it.
+ */
+ if ((mb->vport != vport) ||
+ (mb->mbox_flag & LPFC_MBX_IMED_UNREG))
+ continue;
+
+ if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) &&
+ (mb->u.mb.mbxCommand != MBX_REG_VPI))
+ continue;
+
+ mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
+ ndlp = (struct lpfc_nodelist *)mb->ctx_ndlp;
+ /* Unregister the RPI when mailbox complete */
+ mb->mbox_flag |= LPFC_MBX_IMED_UNREG;
+ restart_loop = 1;
+ spin_unlock_irq(&phba->hbalock);
+ spin_lock(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
+ spin_unlock(&ndlp->lock);
+ spin_lock_irq(&phba->hbalock);
+ break;
+ }
+ }
+ } while (restart_loop);
+
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Release the cleaned-up mailbox commands */
+ while (!list_empty(&mbox_cmd_list)) {
+ list_remove_head(&mbox_cmd_list, mb, LPFC_MBOXQ_t, list);
+ if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
+ ndlp = (struct lpfc_nodelist *)mb->ctx_ndlp;
+ mb->ctx_ndlp = NULL;
+ if (ndlp) {
+ spin_lock(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
+ spin_unlock(&ndlp->lock);
+ lpfc_nlp_put(ndlp);
+ }
+ }
+ lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_UNLOCKED);
+ }
+
+ /* Release the ndlp with the cleaned-up active mailbox command */
+ if (act_mbx_ndlp) {
+ spin_lock(&act_mbx_ndlp->lock);
+ act_mbx_ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
+ spin_unlock(&act_mbx_ndlp->lock);
+ lpfc_nlp_put(act_mbx_ndlp);
+ }
+}
+
+/**
+ * lpfc_drain_txq - Drain the txq
+ * @phba: Pointer to HBA context object.
+ *
+ * This function attempt to submit IOCBs on the txq
+ * to the adapter. For SLI4 adapters, the txq contains
+ * ELS IOCBs that have been deferred because the there
+ * are no SGLs. This congestion can occur with large
+ * vport counts during node discovery.
+ **/
+
+uint32_t
+lpfc_drain_txq(struct lpfc_hba *phba)
+{
+ LIST_HEAD(completions);
+ struct lpfc_sli_ring *pring;
+ struct lpfc_iocbq *piocbq = NULL;
+ unsigned long iflags = 0;
+ char *fail_msg = NULL;
+ uint32_t txq_cnt = 0;
+ struct lpfc_queue *wq;
+ int ret = 0;
+
+ if (phba->link_flag & LS_MDS_LOOPBACK) {
+ /* MDS WQE are posted only to first WQ*/
+ wq = phba->sli4_hba.hdwq[0].io_wq;
+ if (unlikely(!wq))
+ return 0;
+ pring = wq->pring;
+ } else {
+ wq = phba->sli4_hba.els_wq;
+ if (unlikely(!wq))
+ return 0;
+ pring = lpfc_phba_elsring(phba);
+ }
+
+ if (unlikely(!pring) || list_empty(&pring->txq))
+ return 0;
+
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+ list_for_each_entry(piocbq, &pring->txq, list) {
+ txq_cnt++;
+ }
+
+ if (txq_cnt > pring->txq_max)
+ pring->txq_max = txq_cnt;
+
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+
+ while (!list_empty(&pring->txq)) {
+ spin_lock_irqsave(&pring->ring_lock, iflags);
+
+ piocbq = lpfc_sli_ringtx_get(phba, pring);
+ if (!piocbq) {
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2823 txq empty and txq_cnt is %d\n ",
+ txq_cnt);
+ break;
+ }
+ txq_cnt--;
+
+ ret = __lpfc_sli_issue_iocb(phba, pring->ringno, piocbq, 0);
+
+ if (ret && ret != IOCB_BUSY) {
+ fail_msg = " - Cannot send IO ";
+ piocbq->cmd_flag &= ~LPFC_DRIVER_ABORTED;
+ }
+ if (fail_msg) {
+ piocbq->cmd_flag |= LPFC_DRIVER_ABORTED;
+ /* Failed means we can't issue and need to cancel */
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2822 IOCB failed %s iotag 0x%x "
+ "xri 0x%x %d flg x%x\n",
+ fail_msg, piocbq->iotag,
+ piocbq->sli4_xritag, ret,
+ piocbq->cmd_flag);
+ list_add_tail(&piocbq->list, &completions);
+ fail_msg = NULL;
+ }
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ if (txq_cnt == 0 || ret == IOCB_BUSY)
+ break;
+ }
+ /* Cancel all the IOCBs that cannot be issued */
+ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_ABORTED);
+
+ return txq_cnt;
+}
+
+/**
+ * lpfc_wqe_bpl2sgl - Convert the bpl/bde to a sgl.
+ * @phba: Pointer to HBA context object.
+ * @pwqeq: Pointer to command WQE.
+ * @sglq: Pointer to the scatter gather queue object.
+ *
+ * This routine converts the bpl or bde that is in the WQE
+ * to a sgl list for the sli4 hardware. The physical address
+ * of the bpl/bde is converted back to a virtual address.
+ * If the WQE contains a BPL then the list of BDE's is
+ * converted to sli4_sge's. If the WQE contains a single
+ * BDE then it is converted to a single sli_sge.
+ * The WQE is still in cpu endianness so the contents of
+ * the bpl can be used without byte swapping.
+ *
+ * Returns valid XRI = Success, NO_XRI = Failure.
+ */
+static uint16_t
+lpfc_wqe_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeq,
+ struct lpfc_sglq *sglq)
+{
+ uint16_t xritag = NO_XRI;
+ struct ulp_bde64 *bpl = NULL;
+ struct ulp_bde64 bde;
+ struct sli4_sge *sgl = NULL;
+ struct lpfc_dmabuf *dmabuf;
+ union lpfc_wqe128 *wqe;
+ int numBdes = 0;
+ int i = 0;
+ uint32_t offset = 0; /* accumulated offset in the sg request list */
+ int inbound = 0; /* number of sg reply entries inbound from firmware */
+ uint32_t cmd;
+
+ if (!pwqeq || !sglq)
+ return xritag;
+
+ sgl = (struct sli4_sge *)sglq->sgl;
+ wqe = &pwqeq->wqe;
+ pwqeq->iocb.ulpIoTag = pwqeq->iotag;
+
+ cmd = bf_get(wqe_cmnd, &wqe->generic.wqe_com);
+ if (cmd == CMD_XMIT_BLS_RSP64_WQE)
+ return sglq->sli4_xritag;
+ numBdes = pwqeq->num_bdes;
+ if (numBdes) {
+ /* The addrHigh and addrLow fields within the WQE
+ * have not been byteswapped yet so there is no
+ * need to swap them back.
+ */
+ if (pwqeq->bpl_dmabuf)
+ dmabuf = pwqeq->bpl_dmabuf;
+ else
+ return xritag;
+
+ bpl = (struct ulp_bde64 *)dmabuf->virt;
+ if (!bpl)
+ return xritag;
+
+ for (i = 0; i < numBdes; i++) {
+ /* Should already be byte swapped. */
+ sgl->addr_hi = bpl->addrHigh;
+ sgl->addr_lo = bpl->addrLow;
+
+ sgl->word2 = le32_to_cpu(sgl->word2);
+ if ((i+1) == numBdes)
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+ else
+ bf_set(lpfc_sli4_sge_last, sgl, 0);
+ /* swap the size field back to the cpu so we
+ * can assign it to the sgl.
+ */
+ bde.tus.w = le32_to_cpu(bpl->tus.w);
+ sgl->sge_len = cpu_to_le32(bde.tus.f.bdeSize);
+ /* The offsets in the sgl need to be accumulated
+ * separately for the request and reply lists.
+ * The request is always first, the reply follows.
+ */
+ switch (cmd) {
+ case CMD_GEN_REQUEST64_WQE:
+ /* add up the reply sg entries */
+ if (bpl->tus.f.bdeFlags == BUFF_TYPE_BDE_64I)
+ inbound++;
+ /* first inbound? reset the offset */
+ if (inbound == 1)
+ offset = 0;
+ bf_set(lpfc_sli4_sge_offset, sgl, offset);
+ bf_set(lpfc_sli4_sge_type, sgl,
+ LPFC_SGE_TYPE_DATA);
+ offset += bde.tus.f.bdeSize;
+ break;
+ case CMD_FCP_TRSP64_WQE:
+ bf_set(lpfc_sli4_sge_offset, sgl, 0);
+ bf_set(lpfc_sli4_sge_type, sgl,
+ LPFC_SGE_TYPE_DATA);
+ break;
+ case CMD_FCP_TSEND64_WQE:
+ case CMD_FCP_TRECEIVE64_WQE:
+ bf_set(lpfc_sli4_sge_type, sgl,
+ bpl->tus.f.bdeFlags);
+ if (i < 3)
+ offset = 0;
+ else
+ offset += bde.tus.f.bdeSize;
+ bf_set(lpfc_sli4_sge_offset, sgl, offset);
+ break;
+ }
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ bpl++;
+ sgl++;
+ }
+ } else if (wqe->gen_req.bde.tus.f.bdeFlags == BUFF_TYPE_BDE_64) {
+ /* The addrHigh and addrLow fields of the BDE have not
+ * been byteswapped yet so they need to be swapped
+ * before putting them in the sgl.
+ */
+ sgl->addr_hi = cpu_to_le32(wqe->gen_req.bde.addrHigh);
+ sgl->addr_lo = cpu_to_le32(wqe->gen_req.bde.addrLow);
+ sgl->word2 = le32_to_cpu(sgl->word2);
+ bf_set(lpfc_sli4_sge_last, sgl, 1);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(wqe->gen_req.bde.tus.f.bdeSize);
+ }
+ return sglq->sli4_xritag;
+}
+
+/**
+ * lpfc_sli4_issue_wqe - Issue an SLI4 Work Queue Entry (WQE)
+ * @phba: Pointer to HBA context object.
+ * @qp: Pointer to HDW queue.
+ * @pwqe: Pointer to command WQE.
+ **/
+int
+lpfc_sli4_issue_wqe(struct lpfc_hba *phba, struct lpfc_sli4_hdw_queue *qp,
+ struct lpfc_iocbq *pwqe)
+{
+ union lpfc_wqe128 *wqe = &pwqe->wqe;
+ struct lpfc_async_xchg_ctx *ctxp;
+ struct lpfc_queue *wq;
+ struct lpfc_sglq *sglq;
+ struct lpfc_sli_ring *pring;
+ unsigned long iflags;
+ uint32_t ret = 0;
+
+ /* NVME_LS and NVME_LS ABTS requests. */
+ if (pwqe->cmd_flag & LPFC_IO_NVME_LS) {
+ pring = phba->sli4_hba.nvmels_wq->pring;
+ lpfc_qp_spin_lock_irqsave(&pring->ring_lock, iflags,
+ qp, wq_access);
+ sglq = __lpfc_sli_get_els_sglq(phba, pwqe);
+ if (!sglq) {
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ return WQE_BUSY;
+ }
+ pwqe->sli4_lxritag = sglq->sli4_lxritag;
+ pwqe->sli4_xritag = sglq->sli4_xritag;
+ if (lpfc_wqe_bpl2sgl(phba, pwqe, sglq) == NO_XRI) {
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ return WQE_ERROR;
+ }
+ bf_set(wqe_xri_tag, &pwqe->wqe.xmit_bls_rsp.wqe_com,
+ pwqe->sli4_xritag);
+ ret = lpfc_sli4_wq_put(phba->sli4_hba.nvmels_wq, wqe);
+ if (ret) {
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ return ret;
+ }
+
+ lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+
+ lpfc_sli4_poll_eq(qp->hba_eq, LPFC_POLL_FASTPATH);
+ return 0;
+ }
+
+ /* NVME_FCREQ and NVME_ABTS requests */
+ if (pwqe->cmd_flag & (LPFC_IO_NVME | LPFC_IO_FCP | LPFC_IO_CMF)) {
+ /* Get the IO distribution (hba_wqidx) for WQ assignment. */
+ wq = qp->io_wq;
+ pring = wq->pring;
+
+ bf_set(wqe_cqid, &wqe->generic.wqe_com, qp->io_cq_map);
+
+ lpfc_qp_spin_lock_irqsave(&pring->ring_lock, iflags,
+ qp, wq_access);
+ ret = lpfc_sli4_wq_put(wq, wqe);
+ if (ret) {
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ return ret;
+ }
+ lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+
+ lpfc_sli4_poll_eq(qp->hba_eq, LPFC_POLL_FASTPATH);
+ return 0;
+ }
+
+ /* NVMET requests */
+ if (pwqe->cmd_flag & LPFC_IO_NVMET) {
+ /* Get the IO distribution (hba_wqidx) for WQ assignment. */
+ wq = qp->io_wq;
+ pring = wq->pring;
+
+ ctxp = pwqe->context_un.axchg;
+ sglq = ctxp->ctxbuf->sglq;
+ if (pwqe->sli4_xritag == NO_XRI) {
+ pwqe->sli4_lxritag = sglq->sli4_lxritag;
+ pwqe->sli4_xritag = sglq->sli4_xritag;
+ }
+ bf_set(wqe_xri_tag, &pwqe->wqe.xmit_bls_rsp.wqe_com,
+ pwqe->sli4_xritag);
+ bf_set(wqe_cqid, &wqe->generic.wqe_com, qp->io_cq_map);
+
+ lpfc_qp_spin_lock_irqsave(&pring->ring_lock, iflags,
+ qp, wq_access);
+ ret = lpfc_sli4_wq_put(wq, wqe);
+ if (ret) {
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+ return ret;
+ }
+ lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
+ spin_unlock_irqrestore(&pring->ring_lock, iflags);
+
+ lpfc_sli4_poll_eq(qp->hba_eq, LPFC_POLL_FASTPATH);
+ return 0;
+ }
+ return WQE_ERROR;
+}
+
+/**
+ * lpfc_sli4_issue_abort_iotag - SLI-4 WQE init & issue for the Abort
+ * @phba: Pointer to HBA context object.
+ * @cmdiocb: Pointer to driver command iocb object.
+ * @cmpl: completion function.
+ *
+ * Fill the appropriate fields for the abort WQE and call
+ * internal routine lpfc_sli4_issue_wqe to send the WQE
+ * This function is called with hbalock held and no ring_lock held.
+ *
+ * RETURNS 0 - SUCCESS
+ **/
+
+int
+lpfc_sli4_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ void *cmpl)
+{
+ struct lpfc_vport *vport = cmdiocb->vport;
+ struct lpfc_iocbq *abtsiocb = NULL;
+ union lpfc_wqe128 *abtswqe;
+ struct lpfc_io_buf *lpfc_cmd;
+ int retval = IOCB_ERROR;
+ u16 xritag = cmdiocb->sli4_xritag;
+
+ /*
+ * The scsi command can not be in txq and it is in flight because the
+ * pCmd is still pointing at the SCSI command we have to abort. There
+ * is no need to search the txcmplq. Just send an abort to the FW.
+ */
+
+ abtsiocb = __lpfc_sli_get_iocbq(phba);
+ if (!abtsiocb)
+ return WQE_NORESOURCE;
+
+ /* Indicate the IO is being aborted by the driver. */
+ cmdiocb->cmd_flag |= LPFC_DRIVER_ABORTED;
+
+ abtswqe = &abtsiocb->wqe;
+ memset(abtswqe, 0, sizeof(*abtswqe));
+
+ if (!lpfc_is_link_up(phba) || (phba->link_flag & LS_EXTERNAL_LOOPBACK))
+ bf_set(abort_cmd_ia, &abtswqe->abort_cmd, 1);
+ bf_set(abort_cmd_criteria, &abtswqe->abort_cmd, T_XRI_TAG);
+ abtswqe->abort_cmd.rsrvd5 = 0;
+ abtswqe->abort_cmd.wqe_com.abort_tag = xritag;
+ bf_set(wqe_reqtag, &abtswqe->abort_cmd.wqe_com, abtsiocb->iotag);
+ bf_set(wqe_cmnd, &abtswqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
+ bf_set(wqe_xri_tag, &abtswqe->generic.wqe_com, 0);
+ bf_set(wqe_qosd, &abtswqe->abort_cmd.wqe_com, 1);
+ bf_set(wqe_lenloc, &abtswqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);
+ bf_set(wqe_cmd_type, &abtswqe->abort_cmd.wqe_com, OTHER_COMMAND);
+
+ /* ABTS WQE must go to the same WQ as the WQE to be aborted */
+ abtsiocb->hba_wqidx = cmdiocb->hba_wqidx;
+ abtsiocb->cmd_flag |= LPFC_USE_FCPWQIDX;
+ if (cmdiocb->cmd_flag & LPFC_IO_FCP)
+ abtsiocb->cmd_flag |= LPFC_IO_FCP;
+ if (cmdiocb->cmd_flag & LPFC_IO_NVME)
+ abtsiocb->cmd_flag |= LPFC_IO_NVME;
+ if (cmdiocb->cmd_flag & LPFC_IO_FOF)
+ abtsiocb->cmd_flag |= LPFC_IO_FOF;
+ abtsiocb->vport = vport;
+ abtsiocb->cmd_cmpl = cmpl;
+
+ lpfc_cmd = container_of(cmdiocb, struct lpfc_io_buf, cur_iocbq);
+ retval = lpfc_sli4_issue_wqe(phba, lpfc_cmd->hdwq, abtsiocb);
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
+ "0359 Abort xri x%x, original iotag x%x, "
+ "abort cmd iotag x%x retval x%x\n",
+ xritag, cmdiocb->iotag, abtsiocb->iotag, retval);
+
+ if (retval) {
+ cmdiocb->cmd_flag &= ~LPFC_DRIVER_ABORTED;
+ __lpfc_sli_release_iocbq(phba, abtsiocb);
+ }
+
+ return retval;
+}
+
+#ifdef LPFC_MXP_STAT
+/**
+ * lpfc_snapshot_mxp - Snapshot pbl, pvt and busy count
+ * @phba: pointer to lpfc hba data structure.
+ * @hwqid: belong to which HWQ.
+ *
+ * The purpose of this routine is to take a snapshot of pbl, pvt and busy count
+ * 15 seconds after a test case is running.
+ *
+ * The user should call lpfc_debugfs_multixripools_write before running a test
+ * case to clear stat_snapshot_taken. Then the user starts a test case. During
+ * test case is running, stat_snapshot_taken is incremented by 1 every time when
+ * this routine is called from heartbeat timer. When stat_snapshot_taken is
+ * equal to LPFC_MXP_SNAPSHOT_TAKEN, a snapshot is taken.
+ **/
+void lpfc_snapshot_mxp(struct lpfc_hba *phba, u32 hwqid)
+{
+ struct lpfc_sli4_hdw_queue *qp;
+ struct lpfc_multixri_pool *multixri_pool;
+ struct lpfc_pvt_pool *pvt_pool;
+ struct lpfc_pbl_pool *pbl_pool;
+ u32 txcmplq_cnt;
+
+ qp = &phba->sli4_hba.hdwq[hwqid];
+ multixri_pool = qp->p_multixri_pool;
+ if (!multixri_pool)
+ return;
+
+ if (multixri_pool->stat_snapshot_taken == LPFC_MXP_SNAPSHOT_TAKEN) {
+ pvt_pool = &qp->p_multixri_pool->pvt_pool;
+ pbl_pool = &qp->p_multixri_pool->pbl_pool;
+ txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;
+
+ multixri_pool->stat_pbl_count = pbl_pool->count;
+ multixri_pool->stat_pvt_count = pvt_pool->count;
+ multixri_pool->stat_busy_count = txcmplq_cnt;
+ }
+
+ multixri_pool->stat_snapshot_taken++;
+}
+#endif
+
+/**
+ * lpfc_adjust_pvt_pool_count - Adjust private pool count
+ * @phba: pointer to lpfc hba data structure.
+ * @hwqid: belong to which HWQ.
+ *
+ * This routine moves some XRIs from private to public pool when private pool
+ * is not busy.
+ **/
+void lpfc_adjust_pvt_pool_count(struct lpfc_hba *phba, u32 hwqid)
+{
+ struct lpfc_multixri_pool *multixri_pool;
+ u32 io_req_count;
+ u32 prev_io_req_count;
+
+ multixri_pool = phba->sli4_hba.hdwq[hwqid].p_multixri_pool;
+ if (!multixri_pool)
+ return;
+ io_req_count = multixri_pool->io_req_count;
+ prev_io_req_count = multixri_pool->prev_io_req_count;
+
+ if (prev_io_req_count != io_req_count) {
+ /* Private pool is busy */
+ multixri_pool->prev_io_req_count = io_req_count;
+ } else {
+ /* Private pool is not busy.
+ * Move XRIs from private to public pool.
+ */
+ lpfc_move_xri_pvt_to_pbl(phba, hwqid);
+ }
+}
+
+/**
+ * lpfc_adjust_high_watermark - Adjust high watermark
+ * @phba: pointer to lpfc hba data structure.
+ * @hwqid: belong to which HWQ.
+ *
+ * This routine sets high watermark as number of outstanding XRIs,
+ * but make sure the new value is between xri_limit/2 and xri_limit.
+ **/
+void lpfc_adjust_high_watermark(struct lpfc_hba *phba, u32 hwqid)
+{
+ u32 new_watermark;
+ u32 watermark_max;
+ u32 watermark_min;
+ u32 xri_limit;
+ u32 txcmplq_cnt;
+ u32 abts_io_bufs;
+ struct lpfc_multixri_pool *multixri_pool;
+ struct lpfc_sli4_hdw_queue *qp;
+
+ qp = &phba->sli4_hba.hdwq[hwqid];
+ multixri_pool = qp->p_multixri_pool;
+ if (!multixri_pool)
+ return;
+ xri_limit = multixri_pool->xri_limit;
+
+ watermark_max = xri_limit;
+ watermark_min = xri_limit / 2;
+
+ txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;
+ abts_io_bufs = qp->abts_scsi_io_bufs;
+ abts_io_bufs += qp->abts_nvme_io_bufs;
+
+ new_watermark = txcmplq_cnt + abts_io_bufs;
+ new_watermark = min(watermark_max, new_watermark);
+ new_watermark = max(watermark_min, new_watermark);
+ multixri_pool->pvt_pool.high_watermark = new_watermark;
+
+#ifdef LPFC_MXP_STAT
+ multixri_pool->stat_max_hwm = max(multixri_pool->stat_max_hwm,
+ new_watermark);
+#endif
+}
+
+/**
+ * lpfc_move_xri_pvt_to_pbl - Move some XRIs from private to public pool
+ * @phba: pointer to lpfc hba data structure.
+ * @hwqid: belong to which HWQ.
+ *
+ * This routine is called from hearbeat timer when pvt_pool is idle.
+ * All free XRIs are moved from private to public pool on hwqid with 2 steps.
+ * The first step moves (all - low_watermark) amount of XRIs.
+ * The second step moves the rest of XRIs.
+ **/
+void lpfc_move_xri_pvt_to_pbl(struct lpfc_hba *phba, u32 hwqid)
+{
+ struct lpfc_pbl_pool *pbl_pool;
+ struct lpfc_pvt_pool *pvt_pool;
+ struct lpfc_sli4_hdw_queue *qp;
+ struct lpfc_io_buf *lpfc_ncmd;
+ struct lpfc_io_buf *lpfc_ncmd_next;
+ unsigned long iflag;
+ struct list_head tmp_list;
+ u32 tmp_count;
+
+ qp = &phba->sli4_hba.hdwq[hwqid];
+ pbl_pool = &qp->p_multixri_pool->pbl_pool;
+ pvt_pool = &qp->p_multixri_pool->pvt_pool;
+ tmp_count = 0;
+
+ lpfc_qp_spin_lock_irqsave(&pbl_pool->lock, iflag, qp, mv_to_pub_pool);
+ lpfc_qp_spin_lock(&pvt_pool->lock, qp, mv_from_pvt_pool);
+
+ if (pvt_pool->count > pvt_pool->low_watermark) {
+ /* Step 1: move (all - low_watermark) from pvt_pool
+ * to pbl_pool
+ */
+
+ /* Move low watermark of bufs from pvt_pool to tmp_list */
+ INIT_LIST_HEAD(&tmp_list);
+ list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
+ &pvt_pool->list, list) {
+ list_move_tail(&lpfc_ncmd->list, &tmp_list);
+ tmp_count++;
+ if (tmp_count >= pvt_pool->low_watermark)
+ break;
+ }
+
+ /* Move all bufs from pvt_pool to pbl_pool */
+ list_splice_init(&pvt_pool->list, &pbl_pool->list);
+
+ /* Move all bufs from tmp_list to pvt_pool */
+ list_splice(&tmp_list, &pvt_pool->list);
+
+ pbl_pool->count += (pvt_pool->count - tmp_count);
+ pvt_pool->count = tmp_count;
+ } else {
+ /* Step 2: move the rest from pvt_pool to pbl_pool */
+ list_splice_init(&pvt_pool->list, &pbl_pool->list);
+ pbl_pool->count += pvt_pool->count;
+ pvt_pool->count = 0;
+ }
+
+ spin_unlock(&pvt_pool->lock);
+ spin_unlock_irqrestore(&pbl_pool->lock, iflag);
+}
+
+/**
+ * _lpfc_move_xri_pbl_to_pvt - Move some XRIs from public to private pool
+ * @phba: pointer to lpfc hba data structure
+ * @qp: pointer to HDW queue
+ * @pbl_pool: specified public free XRI pool
+ * @pvt_pool: specified private free XRI pool
+ * @count: number of XRIs to move
+ *
+ * This routine tries to move some free common bufs from the specified pbl_pool
+ * to the specified pvt_pool. It might move less than count XRIs if there's not
+ * enough in public pool.
+ *
+ * Return:
+ * true - if XRIs are successfully moved from the specified pbl_pool to the
+ * specified pvt_pool
+ * false - if the specified pbl_pool is empty or locked by someone else
+ **/
+static bool
+_lpfc_move_xri_pbl_to_pvt(struct lpfc_hba *phba, struct lpfc_sli4_hdw_queue *qp,
+ struct lpfc_pbl_pool *pbl_pool,
+ struct lpfc_pvt_pool *pvt_pool, u32 count)
+{
+ struct lpfc_io_buf *lpfc_ncmd;
+ struct lpfc_io_buf *lpfc_ncmd_next;
+ unsigned long iflag;
+ int ret;
+
+ ret = spin_trylock_irqsave(&pbl_pool->lock, iflag);
+ if (ret) {
+ if (pbl_pool->count) {
+ /* Move a batch of XRIs from public to private pool */
+ lpfc_qp_spin_lock(&pvt_pool->lock, qp, mv_to_pvt_pool);
+ list_for_each_entry_safe(lpfc_ncmd,
+ lpfc_ncmd_next,
+ &pbl_pool->list,
+ list) {
+ list_move_tail(&lpfc_ncmd->list,
+ &pvt_pool->list);
+ pvt_pool->count++;
+ pbl_pool->count--;
+ count--;
+ if (count == 0)
+ break;
+ }
+
+ spin_unlock(&pvt_pool->lock);
+ spin_unlock_irqrestore(&pbl_pool->lock, iflag);
+ return true;
+ }
+ spin_unlock_irqrestore(&pbl_pool->lock, iflag);
+ }
+
+ return false;
+}
+
+/**
+ * lpfc_move_xri_pbl_to_pvt - Move some XRIs from public to private pool
+ * @phba: pointer to lpfc hba data structure.
+ * @hwqid: belong to which HWQ.
+ * @count: number of XRIs to move
+ *
+ * This routine tries to find some free common bufs in one of public pools with
+ * Round Robin method. The search always starts from local hwqid, then the next
+ * HWQ which was found last time (rrb_next_hwqid). Once a public pool is found,
+ * a batch of free common bufs are moved to private pool on hwqid.
+ * It might move less than count XRIs if there's not enough in public pool.
+ **/
+void lpfc_move_xri_pbl_to_pvt(struct lpfc_hba *phba, u32 hwqid, u32 count)
+{
+ struct lpfc_multixri_pool *multixri_pool;
+ struct lpfc_multixri_pool *next_multixri_pool;
+ struct lpfc_pvt_pool *pvt_pool;
+ struct lpfc_pbl_pool *pbl_pool;
+ struct lpfc_sli4_hdw_queue *qp;
+ u32 next_hwqid;
+ u32 hwq_count;
+ int ret;
+
+ qp = &phba->sli4_hba.hdwq[hwqid];
+ multixri_pool = qp->p_multixri_pool;
+ pvt_pool = &multixri_pool->pvt_pool;
+ pbl_pool = &multixri_pool->pbl_pool;
+
+ /* Check if local pbl_pool is available */
+ ret = _lpfc_move_xri_pbl_to_pvt(phba, qp, pbl_pool, pvt_pool, count);
+ if (ret) {
+#ifdef LPFC_MXP_STAT
+ multixri_pool->local_pbl_hit_count++;
+#endif
+ return;
+ }
+
+ hwq_count = phba->cfg_hdw_queue;
+
+ /* Get the next hwqid which was found last time */
+ next_hwqid = multixri_pool->rrb_next_hwqid;
+
+ do {
+ /* Go to next hwq */
+ next_hwqid = (next_hwqid + 1) % hwq_count;
+
+ next_multixri_pool =
+ phba->sli4_hba.hdwq[next_hwqid].p_multixri_pool;
+ pbl_pool = &next_multixri_pool->pbl_pool;
+
+ /* Check if the public free xri pool is available */
+ ret = _lpfc_move_xri_pbl_to_pvt(
+ phba, qp, pbl_pool, pvt_pool, count);
+
+ /* Exit while-loop if success or all hwqid are checked */
+ } while (!ret && next_hwqid != multixri_pool->rrb_next_hwqid);
+
+ /* Starting point for the next time */
+ multixri_pool->rrb_next_hwqid = next_hwqid;
+
+ if (!ret) {
+ /* stats: all public pools are empty*/
+ multixri_pool->pbl_empty_count++;
+ }
+
+#ifdef LPFC_MXP_STAT
+ if (ret) {
+ if (next_hwqid == hwqid)
+ multixri_pool->local_pbl_hit_count++;
+ else
+ multixri_pool->other_pbl_hit_count++;
+ }
+#endif
+}
+
+/**
+ * lpfc_keep_pvt_pool_above_lowwm - Keep pvt_pool above low watermark
+ * @phba: pointer to lpfc hba data structure.
+ * @hwqid: belong to which HWQ.
+ *
+ * This routine get a batch of XRIs from pbl_pool if pvt_pool is less than
+ * low watermark.
+ **/
+void lpfc_keep_pvt_pool_above_lowwm(struct lpfc_hba *phba, u32 hwqid)
+{
+ struct lpfc_multixri_pool *multixri_pool;
+ struct lpfc_pvt_pool *pvt_pool;
+
+ multixri_pool = phba->sli4_hba.hdwq[hwqid].p_multixri_pool;
+ pvt_pool = &multixri_pool->pvt_pool;
+
+ if (pvt_pool->count < pvt_pool->low_watermark)
+ lpfc_move_xri_pbl_to_pvt(phba, hwqid, XRI_BATCH);
+}
+
+/**
+ * lpfc_release_io_buf - Return one IO buf back to free pool
+ * @phba: pointer to lpfc hba data structure.
+ * @lpfc_ncmd: IO buf to be returned.
+ * @qp: belong to which HWQ.
+ *
+ * This routine returns one IO buf back to free pool. If this is an urgent IO,
+ * the IO buf is returned to expedite pool. If cfg_xri_rebalancing==1,
+ * the IO buf is returned to pbl_pool or pvt_pool based on watermark and
+ * xri_limit. If cfg_xri_rebalancing==0, the IO buf is returned to
+ * lpfc_io_buf_list_put.
+ **/
+void lpfc_release_io_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd,
+ struct lpfc_sli4_hdw_queue *qp)
+{
+ unsigned long iflag;
+ struct lpfc_pbl_pool *pbl_pool;
+ struct lpfc_pvt_pool *pvt_pool;
+ struct lpfc_epd_pool *epd_pool;
+ u32 txcmplq_cnt;
+ u32 xri_owned;
+ u32 xri_limit;
+ u32 abts_io_bufs;
+
+ /* MUST zero fields if buffer is reused by another protocol */
+ lpfc_ncmd->nvmeCmd = NULL;
+ lpfc_ncmd->cur_iocbq.cmd_cmpl = NULL;
+
+ if (phba->cfg_xpsgl && !phba->nvmet_support &&
+ !list_empty(&lpfc_ncmd->dma_sgl_xtra_list))
+ lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
+
+ if (!list_empty(&lpfc_ncmd->dma_cmd_rsp_list))
+ lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
+
+ if (phba->cfg_xri_rebalancing) {
+ if (lpfc_ncmd->expedite) {
+ /* Return to expedite pool */
+ epd_pool = &phba->epd_pool;
+ spin_lock_irqsave(&epd_pool->lock, iflag);
+ list_add_tail(&lpfc_ncmd->list, &epd_pool->list);
+ epd_pool->count++;
+ spin_unlock_irqrestore(&epd_pool->lock, iflag);
+ return;
+ }
+
+ /* Avoid invalid access if an IO sneaks in and is being rejected
+ * just _after_ xri pools are destroyed in lpfc_offline.
+ * Nothing much can be done at this point.
+ */
+ if (!qp->p_multixri_pool)
+ return;
+
+ pbl_pool = &qp->p_multixri_pool->pbl_pool;
+ pvt_pool = &qp->p_multixri_pool->pvt_pool;
+
+ txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;
+ abts_io_bufs = qp->abts_scsi_io_bufs;
+ abts_io_bufs += qp->abts_nvme_io_bufs;
+
+ xri_owned = pvt_pool->count + txcmplq_cnt + abts_io_bufs;
+ xri_limit = qp->p_multixri_pool->xri_limit;
+
+#ifdef LPFC_MXP_STAT
+ if (xri_owned <= xri_limit)
+ qp->p_multixri_pool->below_limit_count++;
+ else
+ qp->p_multixri_pool->above_limit_count++;
+#endif
+
+ /* XRI goes to either public or private free xri pool
+ * based on watermark and xri_limit
+ */
+ if ((pvt_pool->count < pvt_pool->low_watermark) ||
+ (xri_owned < xri_limit &&
+ pvt_pool->count < pvt_pool->high_watermark)) {
+ lpfc_qp_spin_lock_irqsave(&pvt_pool->lock, iflag,
+ qp, free_pvt_pool);
+ list_add_tail(&lpfc_ncmd->list,
+ &pvt_pool->list);
+ pvt_pool->count++;
+ spin_unlock_irqrestore(&pvt_pool->lock, iflag);
+ } else {
+ lpfc_qp_spin_lock_irqsave(&pbl_pool->lock, iflag,
+ qp, free_pub_pool);
+ list_add_tail(&lpfc_ncmd->list,
+ &pbl_pool->list);
+ pbl_pool->count++;
+ spin_unlock_irqrestore(&pbl_pool->lock, iflag);
+ }
+ } else {
+ lpfc_qp_spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag,
+ qp, free_xri);
+ list_add_tail(&lpfc_ncmd->list,
+ &qp->lpfc_io_buf_list_put);
+ qp->put_io_bufs++;
+ spin_unlock_irqrestore(&qp->io_buf_list_put_lock,
+ iflag);
+ }
+}
+
+/**
+ * lpfc_get_io_buf_from_private_pool - Get one free IO buf from private pool
+ * @phba: pointer to lpfc hba data structure.
+ * @qp: pointer to HDW queue
+ * @pvt_pool: pointer to private pool data structure.
+ * @ndlp: pointer to lpfc nodelist data structure.
+ *
+ * This routine tries to get one free IO buf from private pool.
+ *
+ * Return:
+ * pointer to one free IO buf - if private pool is not empty
+ * NULL - if private pool is empty
+ **/
+static struct lpfc_io_buf *
+lpfc_get_io_buf_from_private_pool(struct lpfc_hba *phba,
+ struct lpfc_sli4_hdw_queue *qp,
+ struct lpfc_pvt_pool *pvt_pool,
+ struct lpfc_nodelist *ndlp)
+{
+ struct lpfc_io_buf *lpfc_ncmd;
+ struct lpfc_io_buf *lpfc_ncmd_next;
+ unsigned long iflag;
+
+ lpfc_qp_spin_lock_irqsave(&pvt_pool->lock, iflag, qp, alloc_pvt_pool);
+ list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
+ &pvt_pool->list, list) {
+ if (lpfc_test_rrq_active(
+ phba, ndlp, lpfc_ncmd->cur_iocbq.sli4_lxritag))
+ continue;
+ list_del(&lpfc_ncmd->list);
+ pvt_pool->count--;
+ spin_unlock_irqrestore(&pvt_pool->lock, iflag);
+ return lpfc_ncmd;
+ }
+ spin_unlock_irqrestore(&pvt_pool->lock, iflag);
+
+ return NULL;
+}
+
+/**
+ * lpfc_get_io_buf_from_expedite_pool - Get one free IO buf from expedite pool
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine tries to get one free IO buf from expedite pool.
+ *
+ * Return:
+ * pointer to one free IO buf - if expedite pool is not empty
+ * NULL - if expedite pool is empty
+ **/
+static struct lpfc_io_buf *
+lpfc_get_io_buf_from_expedite_pool(struct lpfc_hba *phba)
+{
+ struct lpfc_io_buf *lpfc_ncmd = NULL, *iter;
+ struct lpfc_io_buf *lpfc_ncmd_next;
+ unsigned long iflag;
+ struct lpfc_epd_pool *epd_pool;
+
+ epd_pool = &phba->epd_pool;
+
+ spin_lock_irqsave(&epd_pool->lock, iflag);
+ if (epd_pool->count > 0) {
+ list_for_each_entry_safe(iter, lpfc_ncmd_next,
+ &epd_pool->list, list) {
+ list_del(&iter->list);
+ epd_pool->count--;
+ lpfc_ncmd = iter;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&epd_pool->lock, iflag);
+
+ return lpfc_ncmd;
+}
+
+/**
+ * lpfc_get_io_buf_from_multixri_pools - Get one free IO bufs
+ * @phba: pointer to lpfc hba data structure.
+ * @ndlp: pointer to lpfc nodelist data structure.
+ * @hwqid: belong to which HWQ
+ * @expedite: 1 means this request is urgent.
+ *
+ * This routine will do the following actions and then return a pointer to
+ * one free IO buf.
+ *
+ * 1. If private free xri count is empty, move some XRIs from public to
+ * private pool.
+ * 2. Get one XRI from private free xri pool.
+ * 3. If we fail to get one from pvt_pool and this is an expedite request,
+ * get one free xri from expedite pool.
+ *
+ * Note: ndlp is only used on SCSI side for RRQ testing.
+ * The caller should pass NULL for ndlp on NVME side.
+ *
+ * Return:
+ * pointer to one free IO buf - if private pool is not empty
+ * NULL - if private pool is empty
+ **/
+static struct lpfc_io_buf *
+lpfc_get_io_buf_from_multixri_pools(struct lpfc_hba *phba,
+ struct lpfc_nodelist *ndlp,
+ int hwqid, int expedite)
+{
+ struct lpfc_sli4_hdw_queue *qp;
+ struct lpfc_multixri_pool *multixri_pool;
+ struct lpfc_pvt_pool *pvt_pool;
+ struct lpfc_io_buf *lpfc_ncmd;
+
+ qp = &phba->sli4_hba.hdwq[hwqid];
+ lpfc_ncmd = NULL;
+ if (!qp) {
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
+ "5556 NULL qp for hwqid x%x\n", hwqid);
+ return lpfc_ncmd;
+ }
+ multixri_pool = qp->p_multixri_pool;
+ if (!multixri_pool) {
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
+ "5557 NULL multixri for hwqid x%x\n", hwqid);
+ return lpfc_ncmd;
+ }
+ pvt_pool = &multixri_pool->pvt_pool;
+ if (!pvt_pool) {
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
+ "5558 NULL pvt_pool for hwqid x%x\n", hwqid);
+ return lpfc_ncmd;
+ }
+ multixri_pool->io_req_count++;
+
+ /* If pvt_pool is empty, move some XRIs from public to private pool */
+ if (pvt_pool->count == 0)
+ lpfc_move_xri_pbl_to_pvt(phba, hwqid, XRI_BATCH);
+
+ /* Get one XRI from private free xri pool */
+ lpfc_ncmd = lpfc_get_io_buf_from_private_pool(phba, qp, pvt_pool, ndlp);
+
+ if (lpfc_ncmd) {
+ lpfc_ncmd->hdwq = qp;
+ lpfc_ncmd->hdwq_no = hwqid;
+ } else if (expedite) {
+ /* If we fail to get one from pvt_pool and this is an expedite
+ * request, get one free xri from expedite pool.
+ */
+ lpfc_ncmd = lpfc_get_io_buf_from_expedite_pool(phba);
+ }
+
+ return lpfc_ncmd;
+}
+
+static inline struct lpfc_io_buf *
+lpfc_io_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, int idx)
+{
+ struct lpfc_sli4_hdw_queue *qp;
+ struct lpfc_io_buf *lpfc_cmd, *lpfc_cmd_next;
+
+ qp = &phba->sli4_hba.hdwq[idx];
+ list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next,
+ &qp->lpfc_io_buf_list_get, list) {
+ if (lpfc_test_rrq_active(phba, ndlp,
+ lpfc_cmd->cur_iocbq.sli4_lxritag))
+ continue;
+
+ if (lpfc_cmd->flags & LPFC_SBUF_NOT_POSTED)
+ continue;
+
+ list_del_init(&lpfc_cmd->list);
+ qp->get_io_bufs--;
+ lpfc_cmd->hdwq = qp;
+ lpfc_cmd->hdwq_no = idx;
+ return lpfc_cmd;
+ }
+ return NULL;
+}
+
+/**
+ * lpfc_get_io_buf - Get one IO buffer from free pool
+ * @phba: The HBA for which this call is being executed.
+ * @ndlp: pointer to lpfc nodelist data structure.
+ * @hwqid: belong to which HWQ
+ * @expedite: 1 means this request is urgent.
+ *
+ * This routine gets one IO buffer from free pool. If cfg_xri_rebalancing==1,
+ * removes a IO buffer from multiXRI pools. If cfg_xri_rebalancing==0, removes
+ * a IO buffer from head of @hdwq io_buf_list and returns to caller.
+ *
+ * Note: ndlp is only used on SCSI side for RRQ testing.
+ * The caller should pass NULL for ndlp on NVME side.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to lpfc_io_buf - Success
+ **/
+struct lpfc_io_buf *lpfc_get_io_buf(struct lpfc_hba *phba,
+ struct lpfc_nodelist *ndlp,
+ u32 hwqid, int expedite)
+{
+ struct lpfc_sli4_hdw_queue *qp;
+ unsigned long iflag;
+ struct lpfc_io_buf *lpfc_cmd;
+
+ qp = &phba->sli4_hba.hdwq[hwqid];
+ lpfc_cmd = NULL;
+ if (!qp) {
+ lpfc_printf_log(phba, KERN_WARNING,
+ LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
+ "5555 NULL qp for hwqid x%x\n", hwqid);
+ return lpfc_cmd;
+ }
+
+ if (phba->cfg_xri_rebalancing)
+ lpfc_cmd = lpfc_get_io_buf_from_multixri_pools(
+ phba, ndlp, hwqid, expedite);
+ else {
+ lpfc_qp_spin_lock_irqsave(&qp->io_buf_list_get_lock, iflag,
+ qp, alloc_xri_get);
+ if (qp->get_io_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite)
+ lpfc_cmd = lpfc_io_buf(phba, ndlp, hwqid);
+ if (!lpfc_cmd) {
+ lpfc_qp_spin_lock(&qp->io_buf_list_put_lock,
+ qp, alloc_xri_put);
+ list_splice(&qp->lpfc_io_buf_list_put,
+ &qp->lpfc_io_buf_list_get);
+ qp->get_io_bufs += qp->put_io_bufs;
+ INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
+ qp->put_io_bufs = 0;
+ spin_unlock(&qp->io_buf_list_put_lock);
+ if (qp->get_io_bufs > LPFC_NVME_EXPEDITE_XRICNT ||
+ expedite)
+ lpfc_cmd = lpfc_io_buf(phba, ndlp, hwqid);
+ }
+ spin_unlock_irqrestore(&qp->io_buf_list_get_lock, iflag);
+ }
+
+ return lpfc_cmd;
+}
+
+/**
+ * lpfc_read_object - Retrieve object data from HBA
+ * @phba: The HBA for which this call is being executed.
+ * @rdobject: Pathname of object data we want to read.
+ * @datap: Pointer to where data will be copied to.
+ * @datasz: size of data area
+ *
+ * This routine is limited to object sizes of LPFC_BPL_SIZE (1024) or less.
+ * The data will be truncated if datasz is not large enough.
+ * Version 1 is not supported with Embedded mbox cmd, so we must use version 0.
+ * Returns the actual bytes read from the object.
+ */
+int
+lpfc_read_object(struct lpfc_hba *phba, char *rdobject, uint32_t *datap,
+ uint32_t datasz)
+{
+ struct lpfc_mbx_read_object *read_object;
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, eof, j, byte_cnt = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ struct lpfc_dmabuf *pcmd;
+ u32 rd_object_name[LPFC_MBX_OBJECT_NAME_LEN_DW] = {0};
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_read_object) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_READ_OBJECT,
+ length, LPFC_SLI4_MBX_EMBED);
+ read_object = &mbox->u.mqe.un.read_object;
+ shdr = (union lpfc_sli4_cfg_shdr *)&read_object->header.cfg_shdr;
+
+ bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_Q_CREATE_VERSION_0);
+ bf_set(lpfc_mbx_rd_object_rlen, &read_object->u.request, datasz);
+ read_object->u.request.rd_object_offset = 0;
+ read_object->u.request.rd_object_cnt = 1;
+
+ memset((void *)read_object->u.request.rd_object_name, 0,
+ LPFC_OBJ_NAME_SZ);
+ scnprintf((char *)rd_object_name, sizeof(rd_object_name), rdobject);
+ for (j = 0; j < strlen(rdobject); j++)
+ read_object->u.request.rd_object_name[j] =
+ cpu_to_le32(rd_object_name[j]);
+
+ pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL);
+ if (pcmd)
+ pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
+ if (!pcmd || !pcmd->virt) {
+ kfree(pcmd);
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return -ENOMEM;
+ }
+ memset((void *)pcmd->virt, 0, LPFC_BPL_SIZE);
+ read_object->u.request.rd_object_hbuf[0].pa_lo =
+ putPaddrLow(pcmd->phys);
+ read_object->u.request.rd_object_hbuf[0].pa_hi =
+ putPaddrHigh(pcmd->phys);
+ read_object->u.request.rd_object_hbuf[0].length = LPFC_BPL_SIZE;
+
+ mbox->vport = phba->pport;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ mbox->ctx_ndlp = NULL;
+
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+
+ if (shdr_status == STATUS_FAILED &&
+ shdr_add_status == ADD_STATUS_INVALID_OBJECT_NAME) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_CGN_MGMT,
+ "4674 No port cfg file in FW.\n");
+ byte_cnt = -ENOENT;
+ } else if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_CGN_MGMT,
+ "2625 READ_OBJECT mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ byte_cnt = -ENXIO;
+ } else {
+ /* Success */
+ length = read_object->u.response.rd_object_actual_rlen;
+ eof = bf_get(lpfc_mbx_rd_object_eof, &read_object->u.response);
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_CGN_MGMT,
+ "2626 READ_OBJECT Success len %d:%d, EOF %d\n",
+ length, datasz, eof);
+
+ /* Detect the port config file exists but is empty */
+ if (!length && eof) {
+ byte_cnt = 0;
+ goto exit;
+ }
+
+ byte_cnt = length;
+ lpfc_sli_pcimem_bcopy(pcmd->virt, datap, byte_cnt);
+ }
+
+ exit:
+ /* This is an embedded SLI4 mailbox with an external buffer allocated.
+ * Free the pcmd and then cleanup with the correct routine.
+ */
+ lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
+ kfree(pcmd);
+ lpfc_sli4_mbox_cmd_free(phba, mbox);
+ return byte_cnt;
+}
+
+/**
+ * lpfc_get_sgl_per_hdwq - Get one SGL chunk from hdwq's pool
+ * @phba: The HBA for which this call is being executed.
+ * @lpfc_buf: IO buf structure to append the SGL chunk
+ *
+ * This routine gets one SGL chunk buffer from hdwq's SGL chunk pool,
+ * and will allocate an SGL chunk if the pool is empty.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to sli4_hybrid_sgl - Success
+ **/
+struct sli4_hybrid_sgl *
+lpfc_get_sgl_per_hdwq(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_buf)
+{
+ struct sli4_hybrid_sgl *list_entry = NULL;
+ struct sli4_hybrid_sgl *tmp = NULL;
+ struct sli4_hybrid_sgl *allocated_sgl = NULL;
+ struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
+ struct list_head *buf_list = &hdwq->sgl_list;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
+
+ if (likely(!list_empty(buf_list))) {
+ /* break off 1 chunk from the sgl_list */
+ list_for_each_entry_safe(list_entry, tmp,
+ buf_list, list_node) {
+ list_move_tail(&list_entry->list_node,
+ &lpfc_buf->dma_sgl_xtra_list);
+ break;
+ }
+ } else {
+ /* allocate more */
+ spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
+ tmp = kmalloc_node(sizeof(*tmp), GFP_ATOMIC,
+ cpu_to_node(hdwq->io_wq->chann));
+ if (!tmp) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "8353 error kmalloc memory for HDWQ "
+ "%d %s\n",
+ lpfc_buf->hdwq_no, __func__);
+ return NULL;
+ }
+
+ tmp->dma_sgl = dma_pool_alloc(phba->lpfc_sg_dma_buf_pool,
+ GFP_ATOMIC, &tmp->dma_phys_sgl);
+ if (!tmp->dma_sgl) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "8354 error pool_alloc memory for HDWQ "
+ "%d %s\n",
+ lpfc_buf->hdwq_no, __func__);
+ kfree(tmp);
+ return NULL;
+ }
+
+ spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
+ list_add_tail(&tmp->list_node, &lpfc_buf->dma_sgl_xtra_list);
+ }
+
+ allocated_sgl = list_last_entry(&lpfc_buf->dma_sgl_xtra_list,
+ struct sli4_hybrid_sgl,
+ list_node);
+
+ spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
+
+ return allocated_sgl;
+}
+
+/**
+ * lpfc_put_sgl_per_hdwq - Put one SGL chunk into hdwq pool
+ * @phba: The HBA for which this call is being executed.
+ * @lpfc_buf: IO buf structure with the SGL chunk
+ *
+ * This routine puts one SGL chunk buffer into hdwq's SGL chunk pool.
+ *
+ * Return codes:
+ * 0 - Success
+ * -EINVAL - Error
+ **/
+int
+lpfc_put_sgl_per_hdwq(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_buf)
+{
+ int rc = 0;
+ struct sli4_hybrid_sgl *list_entry = NULL;
+ struct sli4_hybrid_sgl *tmp = NULL;
+ struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
+ struct list_head *buf_list = &hdwq->sgl_list;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
+
+ if (likely(!list_empty(&lpfc_buf->dma_sgl_xtra_list))) {
+ list_for_each_entry_safe(list_entry, tmp,
+ &lpfc_buf->dma_sgl_xtra_list,
+ list_node) {
+ list_move_tail(&list_entry->list_node,
+ buf_list);
+ }
+ } else {
+ rc = -EINVAL;
+ }
+
+ spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
+ return rc;
+}
+
+/**
+ * lpfc_free_sgl_per_hdwq - Free all SGL chunks of hdwq pool
+ * @phba: phba object
+ * @hdwq: hdwq to cleanup sgl buff resources on
+ *
+ * This routine frees all SGL chunks of hdwq SGL chunk pool.
+ *
+ * Return codes:
+ * None
+ **/
+void
+lpfc_free_sgl_per_hdwq(struct lpfc_hba *phba,
+ struct lpfc_sli4_hdw_queue *hdwq)
+{
+ struct list_head *buf_list = &hdwq->sgl_list;
+ struct sli4_hybrid_sgl *list_entry = NULL;
+ struct sli4_hybrid_sgl *tmp = NULL;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
+
+ /* Free sgl pool */
+ list_for_each_entry_safe(list_entry, tmp,
+ buf_list, list_node) {
+ dma_pool_free(phba->lpfc_sg_dma_buf_pool,
+ list_entry->dma_sgl,
+ list_entry->dma_phys_sgl);
+ list_del(&list_entry->list_node);
+ kfree(list_entry);
+ }
+
+ spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
+}
+
+/**
+ * lpfc_get_cmd_rsp_buf_per_hdwq - Get one CMD/RSP buffer from hdwq
+ * @phba: The HBA for which this call is being executed.
+ * @lpfc_buf: IO buf structure to attach the CMD/RSP buffer
+ *
+ * This routine gets one CMD/RSP buffer from hdwq's CMD/RSP pool,
+ * and will allocate an CMD/RSP buffer if the pool is empty.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to fcp_cmd_rsp_buf - Success
+ **/
+struct fcp_cmd_rsp_buf *
+lpfc_get_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba,
+ struct lpfc_io_buf *lpfc_buf)
+{
+ struct fcp_cmd_rsp_buf *list_entry = NULL;
+ struct fcp_cmd_rsp_buf *tmp = NULL;
+ struct fcp_cmd_rsp_buf *allocated_buf = NULL;
+ struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
+ struct list_head *buf_list = &hdwq->cmd_rsp_buf_list;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
+
+ if (likely(!list_empty(buf_list))) {
+ /* break off 1 chunk from the list */
+ list_for_each_entry_safe(list_entry, tmp,
+ buf_list,
+ list_node) {
+ list_move_tail(&list_entry->list_node,
+ &lpfc_buf->dma_cmd_rsp_list);
+ break;
+ }
+ } else {
+ /* allocate more */
+ spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
+ tmp = kmalloc_node(sizeof(*tmp), GFP_ATOMIC,
+ cpu_to_node(hdwq->io_wq->chann));
+ if (!tmp) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "8355 error kmalloc memory for HDWQ "
+ "%d %s\n",
+ lpfc_buf->hdwq_no, __func__);
+ return NULL;
+ }
+
+ tmp->fcp_cmnd = dma_pool_zalloc(phba->lpfc_cmd_rsp_buf_pool,
+ GFP_ATOMIC,
+ &tmp->fcp_cmd_rsp_dma_handle);
+
+ if (!tmp->fcp_cmnd) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+ "8356 error pool_alloc memory for HDWQ "
+ "%d %s\n",
+ lpfc_buf->hdwq_no, __func__);
+ kfree(tmp);
+ return NULL;
+ }
+
+ tmp->fcp_rsp = (struct fcp_rsp *)((uint8_t *)tmp->fcp_cmnd +
+ sizeof(struct fcp_cmnd));
+
+ spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
+ list_add_tail(&tmp->list_node, &lpfc_buf->dma_cmd_rsp_list);
+ }
+
+ allocated_buf = list_last_entry(&lpfc_buf->dma_cmd_rsp_list,
+ struct fcp_cmd_rsp_buf,
+ list_node);
+
+ spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
+
+ return allocated_buf;
+}
+
+/**
+ * lpfc_put_cmd_rsp_buf_per_hdwq - Put one CMD/RSP buffer into hdwq pool
+ * @phba: The HBA for which this call is being executed.
+ * @lpfc_buf: IO buf structure with the CMD/RSP buf
+ *
+ * This routine puts one CMD/RSP buffer into executing CPU's CMD/RSP pool.
+ *
+ * Return codes:
+ * 0 - Success
+ * -EINVAL - Error
+ **/
+int
+lpfc_put_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba,
+ struct lpfc_io_buf *lpfc_buf)
+{
+ int rc = 0;
+ struct fcp_cmd_rsp_buf *list_entry = NULL;
+ struct fcp_cmd_rsp_buf *tmp = NULL;
+ struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
+ struct list_head *buf_list = &hdwq->cmd_rsp_buf_list;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
+
+ if (likely(!list_empty(&lpfc_buf->dma_cmd_rsp_list))) {
+ list_for_each_entry_safe(list_entry, tmp,
+ &lpfc_buf->dma_cmd_rsp_list,
+ list_node) {
+ list_move_tail(&list_entry->list_node,
+ buf_list);
+ }
+ } else {
+ rc = -EINVAL;
+ }
+
+ spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
+ return rc;
+}
+
+/**
+ * lpfc_free_cmd_rsp_buf_per_hdwq - Free all CMD/RSP chunks of hdwq pool
+ * @phba: phba object
+ * @hdwq: hdwq to cleanup cmd rsp buff resources on
+ *
+ * This routine frees all CMD/RSP buffers of hdwq's CMD/RSP buf pool.
+ *
+ * Return codes:
+ * None
+ **/
+void
+lpfc_free_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba,
+ struct lpfc_sli4_hdw_queue *hdwq)
+{
+ struct list_head *buf_list = &hdwq->cmd_rsp_buf_list;
+ struct fcp_cmd_rsp_buf *list_entry = NULL;
+ struct fcp_cmd_rsp_buf *tmp = NULL;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
+
+ /* Free cmd_rsp buf pool */
+ list_for_each_entry_safe(list_entry, tmp,
+ buf_list,
+ list_node) {
+ dma_pool_free(phba->lpfc_cmd_rsp_buf_pool,
+ list_entry->fcp_cmnd,
+ list_entry->fcp_cmd_rsp_dma_handle);
+ list_del(&list_entry->list_node);
+ kfree(list_entry);
+ }
+
+ spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
+}
+
+/**
+ * lpfc_sli_prep_wqe - Prepare WQE for the command to be posted
+ * @phba: phba object
+ * @job: job entry of the command to be posted.
+ *
+ * Fill the common fields of the wqe for each of the command.
+ *
+ * Return codes:
+ * None
+ **/
+void
+lpfc_sli_prep_wqe(struct lpfc_hba *phba, struct lpfc_iocbq *job)
+{
+ u8 cmnd;
+ u32 *pcmd;
+ u32 if_type = 0;
+ u32 fip, abort_tag;
+ struct lpfc_nodelist *ndlp = NULL;
+ union lpfc_wqe128 *wqe = &job->wqe;
+ u8 command_type = ELS_COMMAND_NON_FIP;
+
+ fip = phba->hba_flag & HBA_FIP_SUPPORT;
+ /* The fcp commands will set command type */
+ if (job->cmd_flag & LPFC_IO_FCP)
+ command_type = FCP_COMMAND;
+ else if (fip && (job->cmd_flag & LPFC_FIP_ELS_ID_MASK))
+ command_type = ELS_COMMAND_FIP;
+ else
+ command_type = ELS_COMMAND_NON_FIP;
+
+ abort_tag = job->iotag;
+ cmnd = bf_get(wqe_cmnd, &wqe->els_req.wqe_com);
+
+ switch (cmnd) {
+ case CMD_ELS_REQUEST64_WQE:
+ ndlp = job->ndlp;
+
+ if_type = bf_get(lpfc_sli_intf_if_type,
+ &phba->sli4_hba.sli_intf);
+ if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
+ pcmd = (u32 *)job->cmd_dmabuf->virt;
+ if (pcmd && (*pcmd == ELS_CMD_FLOGI ||
+ *pcmd == ELS_CMD_SCR ||
+ *pcmd == ELS_CMD_RDF ||
+ *pcmd == ELS_CMD_EDC ||
+ *pcmd == ELS_CMD_RSCN_XMT ||
+ *pcmd == ELS_CMD_FDISC ||
+ *pcmd == ELS_CMD_LOGO ||
+ *pcmd == ELS_CMD_QFPA ||
+ *pcmd == ELS_CMD_UVEM ||
+ *pcmd == ELS_CMD_PLOGI)) {
+ bf_set(els_req64_sp, &wqe->els_req, 1);
+ bf_set(els_req64_sid, &wqe->els_req,
+ job->vport->fc_myDID);
+
+ if ((*pcmd == ELS_CMD_FLOGI) &&
+ !(phba->fc_topology ==
+ LPFC_TOPOLOGY_LOOP))
+ bf_set(els_req64_sid, &wqe->els_req, 0);
+
+ bf_set(wqe_ct, &wqe->els_req.wqe_com, 1);
+ bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
+ phba->vpi_ids[job->vport->vpi]);
+ } else if (pcmd) {
+ bf_set(wqe_ct, &wqe->els_req.wqe_com, 0);
+ bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
+ phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
+ }
+ }
+
+ bf_set(wqe_temp_rpi, &wqe->els_req.wqe_com,
+ phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
+
+ bf_set(wqe_dbde, &wqe->els_req.wqe_com, 1);
+ bf_set(wqe_iod, &wqe->els_req.wqe_com, LPFC_WQE_IOD_READ);
+ bf_set(wqe_qosd, &wqe->els_req.wqe_com, 1);
+ bf_set(wqe_lenloc, &wqe->els_req.wqe_com, LPFC_WQE_LENLOC_NONE);
+ bf_set(wqe_ebde_cnt, &wqe->els_req.wqe_com, 0);
+ break;
+ case CMD_XMIT_ELS_RSP64_WQE:
+ ndlp = job->ndlp;
+
+ /* word4 */
+ wqe->xmit_els_rsp.word4 = 0;
+
+ if_type = bf_get(lpfc_sli_intf_if_type,
+ &phba->sli4_hba.sli_intf);
+ if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
+ if (job->vport->fc_flag & FC_PT2PT) {
+ bf_set(els_rsp64_sp, &wqe->xmit_els_rsp, 1);
+ bf_set(els_rsp64_sid, &wqe->xmit_els_rsp,
+ job->vport->fc_myDID);
+ if (job->vport->fc_myDID == Fabric_DID) {
+ bf_set(wqe_els_did,
+ &wqe->xmit_els_rsp.wqe_dest, 0);
+ }
+ }
+ }
+
+ bf_set(wqe_dbde, &wqe->xmit_els_rsp.wqe_com, 1);
+ bf_set(wqe_iod, &wqe->xmit_els_rsp.wqe_com, LPFC_WQE_IOD_WRITE);
+ bf_set(wqe_qosd, &wqe->xmit_els_rsp.wqe_com, 1);
+ bf_set(wqe_lenloc, &wqe->xmit_els_rsp.wqe_com,
+ LPFC_WQE_LENLOC_WORD3);
+ bf_set(wqe_ebde_cnt, &wqe->xmit_els_rsp.wqe_com, 0);
+
+ if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
+ bf_set(els_rsp64_sp, &wqe->xmit_els_rsp, 1);
+ bf_set(els_rsp64_sid, &wqe->xmit_els_rsp,
+ job->vport->fc_myDID);
+ bf_set(wqe_ct, &wqe->xmit_els_rsp.wqe_com, 1);
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ bf_set(wqe_rsp_temp_rpi, &wqe->xmit_els_rsp,
+ phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
+
+ if (bf_get(wqe_ct, &wqe->xmit_els_rsp.wqe_com))
+ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
+ phba->vpi_ids[job->vport->vpi]);
+ }
+ command_type = OTHER_COMMAND;
+ break;
+ case CMD_GEN_REQUEST64_WQE:
+ /* Word 10 */
+ bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1);
+ bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ);
+ bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1);
+ bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE);
+ bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0);
+ command_type = OTHER_COMMAND;
+ break;
+ case CMD_XMIT_SEQUENCE64_WQE:
+ if (phba->link_flag & LS_LOOPBACK_MODE)
+ bf_set(wqe_xo, &wqe->xmit_sequence.wge_ctl, 1);
+
+ wqe->xmit_sequence.rsvd3 = 0;
+ bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0);
+ bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1);
+ bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com,
+ LPFC_WQE_IOD_WRITE);
+ bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com,
+ LPFC_WQE_LENLOC_WORD12);
+ bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0);
+ command_type = OTHER_COMMAND;
+ break;
+ case CMD_XMIT_BLS_RSP64_WQE:
+ bf_set(xmit_bls_rsp64_seqcnthi, &wqe->xmit_bls_rsp, 0xffff);
+ bf_set(wqe_xmit_bls_pt, &wqe->xmit_bls_rsp.wqe_dest, 0x1);
+ bf_set(wqe_ct, &wqe->xmit_bls_rsp.wqe_com, 1);
+ bf_set(wqe_ctxt_tag, &wqe->xmit_bls_rsp.wqe_com,
+ phba->vpi_ids[phba->pport->vpi]);
+ bf_set(wqe_qosd, &wqe->xmit_bls_rsp.wqe_com, 1);
+ bf_set(wqe_lenloc, &wqe->xmit_bls_rsp.wqe_com,
+ LPFC_WQE_LENLOC_NONE);
+ /* Overwrite the pre-set comnd type with OTHER_COMMAND */
+ command_type = OTHER_COMMAND;
+ break;
+ case CMD_FCP_ICMND64_WQE: /* task mgmt commands */
+ case CMD_ABORT_XRI_WQE: /* abort iotag */
+ case CMD_SEND_FRAME: /* mds loopback */
+ /* cases already formatted for sli4 wqe - no chgs necessary */
+ return;
+ default:
+ dump_stack();
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "6207 Invalid command 0x%x\n",
+ cmnd);
+ break;
+ }
+
+ wqe->generic.wqe_com.abort_tag = abort_tag;
+ bf_set(wqe_reqtag, &wqe->generic.wqe_com, job->iotag);
+ bf_set(wqe_cmd_type, &wqe->generic.wqe_com, command_type);
+ bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
+}