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-rw-r--r--drivers/scsi/qedf/Kconfig12
-rw-r--r--drivers/scsi/qedf/Makefile6
-rw-r--r--drivers/scsi/qedf/drv_fcoe_fw_funcs.c196
-rw-r--r--drivers/scsi/qedf/drv_fcoe_fw_funcs.h90
-rw-r--r--drivers/scsi/qedf/drv_scsi_fw_funcs.c41
-rw-r--r--drivers/scsi/qedf/drv_scsi_fw_funcs.h82
-rw-r--r--drivers/scsi/qedf/qedf.h604
-rw-r--r--drivers/scsi/qedf/qedf_attr.c186
-rw-r--r--drivers/scsi/qedf/qedf_dbg.c175
-rw-r--r--drivers/scsi/qedf/qedf_dbg.h158
-rw-r--r--drivers/scsi/qedf/qedf_debugfs.c494
-rw-r--r--drivers/scsi/qedf/qedf_els.c1066
-rw-r--r--drivers/scsi/qedf/qedf_fip.c301
-rw-r--r--drivers/scsi/qedf/qedf_hsi.h351
-rw-r--r--drivers/scsi/qedf/qedf_io.c2630
-rw-r--r--drivers/scsi/qedf/qedf_main.c4200
-rw-r--r--drivers/scsi/qedf/qedf_version.h12
17 files changed, 10604 insertions, 0 deletions
diff --git a/drivers/scsi/qedf/Kconfig b/drivers/scsi/qedf/Kconfig
new file mode 100644
index 000000000..eb81a1b03
--- /dev/null
+++ b/drivers/scsi/qedf/Kconfig
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config QEDF
+ tristate "QLogic QEDF 25/40/100Gb FCoE Initiator Driver Support"
+ depends on PCI && SCSI
+ depends on QED
+ depends on LIBFC
+ depends on LIBFCOE
+ select QED_LL2
+ select QED_FCOE
+ help
+ This driver supports FCoE offload for the QLogic FastLinQ
+ 41000 Series Converged Network Adapters.
diff --git a/drivers/scsi/qedf/Makefile b/drivers/scsi/qedf/Makefile
new file mode 100644
index 000000000..c46287826
--- /dev/null
+++ b/drivers/scsi/qedf/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_QEDF) := qedf.o
+qedf-y = qedf_dbg.o qedf_main.o qedf_io.o qedf_fip.o \
+ qedf_attr.o qedf_els.o drv_scsi_fw_funcs.o drv_fcoe_fw_funcs.o
+
+qedf-$(CONFIG_DEBUG_FS) += qedf_debugfs.o
diff --git a/drivers/scsi/qedf/drv_fcoe_fw_funcs.c b/drivers/scsi/qedf/drv_fcoe_fw_funcs.c
new file mode 100644
index 000000000..e8bc8d9e4
--- /dev/null
+++ b/drivers/scsi/qedf/drv_fcoe_fw_funcs.c
@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#include "drv_fcoe_fw_funcs.h"
+#include "drv_scsi_fw_funcs.h"
+
+#define FCOE_RX_ID (0xFFFFu)
+
+static inline void init_common_sqe(struct fcoe_task_params *task_params,
+ enum fcoe_sqe_request_type request_type)
+{
+ memset(task_params->sqe, 0, sizeof(*(task_params->sqe)));
+ SET_FIELD(task_params->sqe->flags, FCOE_WQE_REQ_TYPE,
+ request_type);
+ task_params->sqe->task_id = task_params->itid;
+}
+
+int init_initiator_rw_fcoe_task(struct fcoe_task_params *task_params,
+ struct scsi_sgl_task_params *sgl_task_params,
+ struct regpair sense_data_buffer_phys_addr,
+ u32 task_retry_id,
+ u8 fcp_cmd_payload[32])
+{
+ struct fcoe_task_context *ctx = task_params->context;
+ const u8 val_byte = ctx->ystorm_ag_context.byte0;
+ struct ustorm_fcoe_task_ag_ctx *u_ag_ctx;
+ struct ystorm_fcoe_task_st_ctx *y_st_ctx;
+ struct tstorm_fcoe_task_st_ctx *t_st_ctx;
+ struct mstorm_fcoe_task_st_ctx *m_st_ctx;
+ u32 io_size, val;
+ bool slow_sgl;
+
+ memset(ctx, 0, sizeof(*(ctx)));
+ ctx->ystorm_ag_context.byte0 = val_byte;
+ slow_sgl = scsi_is_slow_sgl(sgl_task_params->num_sges,
+ sgl_task_params->small_mid_sge);
+ io_size = (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR ?
+ task_params->tx_io_size : task_params->rx_io_size);
+
+ /* Ystorm ctx */
+ y_st_ctx = &ctx->ystorm_st_context;
+ y_st_ctx->data_2_trns_rem = cpu_to_le32(io_size);
+ y_st_ctx->task_rety_identifier = cpu_to_le32(task_retry_id);
+ y_st_ctx->task_type = (u8)task_params->task_type;
+ memcpy(&y_st_ctx->tx_info_union.fcp_cmd_payload,
+ fcp_cmd_payload, sizeof(struct fcoe_fcp_cmd_payload));
+
+ /* Tstorm ctx */
+ t_st_ctx = &ctx->tstorm_st_context;
+ t_st_ctx->read_only.dev_type = (u8)(task_params->is_tape_device == 1 ?
+ FCOE_TASK_DEV_TYPE_TAPE :
+ FCOE_TASK_DEV_TYPE_DISK);
+ t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid);
+ val = cpu_to_le32(task_params->cq_rss_number);
+ t_st_ctx->read_only.glbl_q_num = val;
+ t_st_ctx->read_only.fcp_cmd_trns_size = cpu_to_le32(io_size);
+ t_st_ctx->read_only.task_type = (u8)task_params->task_type;
+ SET_FIELD(t_st_ctx->read_write.flags,
+ FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1);
+ t_st_ctx->read_write.rx_id = cpu_to_le16(FCOE_RX_ID);
+
+ /* Ustorm ctx */
+ u_ag_ctx = &ctx->ustorm_ag_context;
+ u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number);
+
+ /* Mstorm buffer for sense/rsp data placement */
+ m_st_ctx = &ctx->mstorm_st_context;
+ val = cpu_to_le32(sense_data_buffer_phys_addr.hi);
+ m_st_ctx->rsp_buf_addr.hi = val;
+ val = cpu_to_le32(sense_data_buffer_phys_addr.lo);
+ m_st_ctx->rsp_buf_addr.lo = val;
+
+ if (task_params->task_type == FCOE_TASK_TYPE_WRITE_INITIATOR) {
+ /* Ystorm ctx */
+ y_st_ctx->expect_first_xfer = 1;
+
+ /* Set the amount of super SGEs. Can be up to 4. */
+ SET_FIELD(y_st_ctx->sgl_mode,
+ YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE,
+ (slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));
+ init_scsi_sgl_context(&y_st_ctx->sgl_params,
+ &y_st_ctx->data_desc,
+ sgl_task_params);
+
+ /* Mstorm ctx */
+ SET_FIELD(m_st_ctx->flags,
+ MSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE,
+ (slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));
+ m_st_ctx->sgl_params.sgl_num_sges =
+ cpu_to_le16(sgl_task_params->num_sges);
+ } else {
+ /* Tstorm ctx */
+ SET_FIELD(t_st_ctx->read_write.flags,
+ FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_RX_SGL_MODE,
+ (slow_sgl ? SCSI_TX_SLOW_SGL : SCSI_FAST_SGL));
+
+ /* Mstorm ctx */
+ m_st_ctx->data_2_trns_rem = cpu_to_le32(io_size);
+ init_scsi_sgl_context(&m_st_ctx->sgl_params,
+ &m_st_ctx->data_desc,
+ sgl_task_params);
+ }
+
+ /* Init Sqe */
+ init_common_sqe(task_params, SEND_FCOE_CMD);
+
+ return 0;
+}
+
+int init_initiator_midpath_unsolicited_fcoe_task(
+ struct fcoe_task_params *task_params,
+ struct fcoe_tx_mid_path_params *mid_path_fc_header,
+ struct scsi_sgl_task_params *tx_sgl_task_params,
+ struct scsi_sgl_task_params *rx_sgl_task_params,
+ u8 fw_to_place_fc_header)
+{
+ struct fcoe_task_context *ctx = task_params->context;
+ const u8 val_byte = ctx->ystorm_ag_context.byte0;
+ struct ustorm_fcoe_task_ag_ctx *u_ag_ctx;
+ struct ystorm_fcoe_task_st_ctx *y_st_ctx;
+ struct tstorm_fcoe_task_st_ctx *t_st_ctx;
+ struct mstorm_fcoe_task_st_ctx *m_st_ctx;
+ u32 val;
+
+ memset(ctx, 0, sizeof(*(ctx)));
+ ctx->ystorm_ag_context.byte0 = val_byte;
+
+ /* Init Ystorm */
+ y_st_ctx = &ctx->ystorm_st_context;
+ init_scsi_sgl_context(&y_st_ctx->sgl_params,
+ &y_st_ctx->data_desc,
+ tx_sgl_task_params);
+ SET_FIELD(y_st_ctx->sgl_mode,
+ YSTORM_FCOE_TASK_ST_CTX_TX_SGL_MODE, SCSI_FAST_SGL);
+ y_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->tx_io_size);
+ y_st_ctx->task_type = (u8)task_params->task_type;
+ memcpy(&y_st_ctx->tx_info_union.tx_params.mid_path,
+ mid_path_fc_header, sizeof(struct fcoe_tx_mid_path_params));
+
+ /* Init Mstorm */
+ m_st_ctx = &ctx->mstorm_st_context;
+ init_scsi_sgl_context(&m_st_ctx->sgl_params,
+ &m_st_ctx->data_desc,
+ rx_sgl_task_params);
+ SET_FIELD(m_st_ctx->flags,
+ MSTORM_FCOE_TASK_ST_CTX_MP_INCLUDE_FC_HEADER,
+ fw_to_place_fc_header);
+ m_st_ctx->data_2_trns_rem = cpu_to_le32(task_params->rx_io_size);
+
+ /* Init Tstorm */
+ t_st_ctx = &ctx->tstorm_st_context;
+ t_st_ctx->read_only.cid = cpu_to_le32(task_params->conn_cid);
+ val = cpu_to_le32(task_params->cq_rss_number);
+ t_st_ctx->read_only.glbl_q_num = val;
+ t_st_ctx->read_only.task_type = (u8)task_params->task_type;
+ SET_FIELD(t_st_ctx->read_write.flags,
+ FCOE_TSTORM_FCOE_TASK_ST_CTX_READ_WRITE_EXP_FIRST_FRAME, 1);
+ t_st_ctx->read_write.rx_id = cpu_to_le16(FCOE_RX_ID);
+
+ /* Init Ustorm */
+ u_ag_ctx = &ctx->ustorm_ag_context;
+ u_ag_ctx->global_cq_num = cpu_to_le32(task_params->cq_rss_number);
+
+ /* Init SQE */
+ init_common_sqe(task_params, SEND_FCOE_MIDPATH);
+ task_params->sqe->additional_info_union.burst_length =
+ tx_sgl_task_params->total_buffer_size;
+ SET_FIELD(task_params->sqe->flags,
+ FCOE_WQE_NUM_SGES, tx_sgl_task_params->num_sges);
+ SET_FIELD(task_params->sqe->flags, FCOE_WQE_SGL_MODE,
+ SCSI_FAST_SGL);
+
+ return 0;
+}
+
+int init_initiator_abort_fcoe_task(struct fcoe_task_params *task_params)
+{
+ init_common_sqe(task_params, SEND_FCOE_ABTS_REQUEST);
+ return 0;
+}
+
+int init_initiator_cleanup_fcoe_task(struct fcoe_task_params *task_params)
+{
+ init_common_sqe(task_params, FCOE_EXCHANGE_CLEANUP);
+ return 0;
+}
+
+int init_initiator_sequence_recovery_fcoe_task(
+ struct fcoe_task_params *task_params, u32 desired_offset)
+{
+ init_common_sqe(task_params, FCOE_SEQUENCE_RECOVERY);
+ task_params->sqe->additional_info_union.seq_rec_updated_offset =
+ desired_offset;
+ return 0;
+}
diff --git a/drivers/scsi/qedf/drv_fcoe_fw_funcs.h b/drivers/scsi/qedf/drv_fcoe_fw_funcs.h
new file mode 100644
index 000000000..7125e484b
--- /dev/null
+++ b/drivers/scsi/qedf/drv_fcoe_fw_funcs.h
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#ifndef _FCOE_FW_FUNCS_H
+#define _FCOE_FW_FUNCS_H
+#include "drv_scsi_fw_funcs.h"
+#include "qedf_hsi.h"
+#include <linux/qed/qed_if.h>
+
+struct fcoe_task_params {
+ /* Output parameter [set/filled by the HSI function] */
+ struct fcoe_task_context *context;
+
+ /* Output parameter [set/filled by the HSI function] */
+ struct fcoe_wqe *sqe;
+ enum fcoe_task_type task_type;
+ u32 tx_io_size; /* in bytes */
+ u32 rx_io_size; /* in bytes */
+ u32 conn_cid;
+ u16 itid;
+ u8 cq_rss_number;
+
+ /* Whether it's Tape device or not (0=Disk, 1=Tape) */
+ u8 is_tape_device;
+};
+
+/**
+ * @brief init_initiator_rw_fcoe_task - Initializes FCoE task context for
+ * read/write task types and init fcoe_sqe
+ *
+ * @param task_params - Pointer to task parameters struct
+ * @param sgl_task_params - Pointer to SGL task params
+ * @param sense_data_buffer_phys_addr - Pointer to sense data buffer
+ * @param task_retry_id - retry identification - Used only for Tape device
+ * @param fcp_cmnd_payload - FCP CMD Payload
+ */
+int init_initiator_rw_fcoe_task(struct fcoe_task_params *task_params,
+ struct scsi_sgl_task_params *sgl_task_params,
+ struct regpair sense_data_buffer_phys_addr,
+ u32 task_retry_id,
+ u8 fcp_cmd_payload[32]);
+
+/**
+ * @brief init_initiator_midpath_fcoe_task - Initializes FCoE task context for
+ * midpath/unsolicited task types and init fcoe_sqe
+ *
+ * @param task_params - Pointer to task parameters struct
+ * @param mid_path_fc_header - FC header
+ * @param tx_sgl_task_params - Pointer to Tx SGL task params
+ * @param rx_sgl_task_params - Pointer to Rx SGL task params
+ * @param fw_to_place_fc_header - Indication if the FW will place the FC header
+ * in addition to the data arrives.
+ */
+int init_initiator_midpath_unsolicited_fcoe_task(
+ struct fcoe_task_params *task_params,
+ struct fcoe_tx_mid_path_params *mid_path_fc_header,
+ struct scsi_sgl_task_params *tx_sgl_task_params,
+ struct scsi_sgl_task_params *rx_sgl_task_params,
+ u8 fw_to_place_fc_header);
+
+/**
+ * @brief init_initiator_abort_fcoe_task - Initializes FCoE task context for
+ * abort task types and init fcoe_sqe
+ *
+ * @param task_params - Pointer to task parameters struct
+ */
+int init_initiator_abort_fcoe_task(struct fcoe_task_params *task_params);
+
+/**
+ * @brief init_initiator_cleanup_fcoe_task - Initializes FCoE task context for
+ * cleanup task types and init fcoe_sqe
+ *
+ *
+ * @param task_params - Pointer to task parameters struct
+ */
+int init_initiator_cleanup_fcoe_task(struct fcoe_task_params *task_params);
+
+/**
+ * @brief init_initiator_cleanup_fcoe_task - Initializes FCoE task context for
+ * sequence recovery task types and init fcoe_sqe
+ *
+ *
+ * @param task_params - Pointer to task parameters struct
+ * @param desired_offset - The desired offest the task will be re-sent from
+ */
+int init_initiator_sequence_recovery_fcoe_task(
+ struct fcoe_task_params *task_params,
+ u32 desired_offset);
+#endif
diff --git a/drivers/scsi/qedf/drv_scsi_fw_funcs.c b/drivers/scsi/qedf/drv_scsi_fw_funcs.c
new file mode 100644
index 000000000..3289b7103
--- /dev/null
+++ b/drivers/scsi/qedf/drv_scsi_fw_funcs.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#include "drv_scsi_fw_funcs.h"
+
+#define SCSI_NUM_SGES_IN_CACHE 0x4
+
+bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge)
+{
+ return (num_sges > SCSI_NUM_SGES_SLOW_SGL_THR && small_mid_sge);
+}
+
+void init_scsi_sgl_context(struct scsi_sgl_params *ctx_sgl_params,
+ struct scsi_cached_sges *ctx_data_desc,
+ struct scsi_sgl_task_params *sgl_task_params)
+{
+ /* no need to check for sgl_task_params->sgl validity */
+ u8 num_sges_to_init = sgl_task_params->num_sges >
+ SCSI_NUM_SGES_IN_CACHE ? SCSI_NUM_SGES_IN_CACHE :
+ sgl_task_params->num_sges;
+ u8 sge_index;
+ u32 val;
+
+ val = cpu_to_le32(sgl_task_params->sgl_phys_addr.lo);
+ ctx_sgl_params->sgl_addr.lo = val;
+ val = cpu_to_le32(sgl_task_params->sgl_phys_addr.hi);
+ ctx_sgl_params->sgl_addr.hi = val;
+ val = cpu_to_le32(sgl_task_params->total_buffer_size);
+ ctx_sgl_params->sgl_total_length = val;
+ ctx_sgl_params->sgl_num_sges = cpu_to_le16(sgl_task_params->num_sges);
+
+ for (sge_index = 0; sge_index < num_sges_to_init; sge_index++) {
+ val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.lo);
+ ctx_data_desc->sge[sge_index].sge_addr.lo = val;
+ val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.hi);
+ ctx_data_desc->sge[sge_index].sge_addr.hi = val;
+ val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_len);
+ ctx_data_desc->sge[sge_index].sge_len = val;
+ }
+}
diff --git a/drivers/scsi/qedf/drv_scsi_fw_funcs.h b/drivers/scsi/qedf/drv_scsi_fw_funcs.h
new file mode 100644
index 000000000..6195f13de
--- /dev/null
+++ b/drivers/scsi/qedf/drv_scsi_fw_funcs.h
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#ifndef _SCSI_FW_FUNCS_H
+#define _SCSI_FW_FUNCS_H
+#include <linux/qed/common_hsi.h>
+#include <linux/qed/storage_common.h>
+#include <linux/qed/fcoe_common.h>
+
+struct scsi_sgl_task_params {
+ struct scsi_sge *sgl;
+ struct regpair sgl_phys_addr;
+ u32 total_buffer_size;
+ u16 num_sges;
+
+ /* true if SGL contains a small (< 4KB) SGE in middle(not 1st or last)
+ * -> relevant for tx only
+ */
+ bool small_mid_sge;
+};
+
+struct scsi_dif_task_params {
+ u32 initial_ref_tag;
+ bool initial_ref_tag_is_valid;
+ u16 application_tag;
+ u16 application_tag_mask;
+ u16 dif_block_size_log;
+ bool dif_on_network;
+ bool dif_on_host;
+ u8 host_guard_type;
+ u8 protection_type;
+ u8 ref_tag_mask;
+ bool crc_seed;
+
+ /* Enable Connection error upon DIF error (segments with DIF errors are
+ * dropped)
+ */
+ bool tx_dif_conn_err_en;
+ bool ignore_app_tag;
+ bool keep_ref_tag_const;
+ bool validate_guard;
+ bool validate_app_tag;
+ bool validate_ref_tag;
+ bool forward_guard;
+ bool forward_app_tag;
+ bool forward_ref_tag;
+ bool forward_app_tag_with_mask;
+ bool forward_ref_tag_with_mask;
+};
+
+struct scsi_initiator_cmd_params {
+ /* for cdb_size > default CDB size (extended CDB > 16 bytes) ->
+ * pointer to the CDB buffer SGE
+ */
+ struct scsi_sge extended_cdb_sge;
+
+ /* Physical address of sense data buffer for sense data - 256B buffer */
+ struct regpair sense_data_buffer_phys_addr;
+};
+
+/**
+ * @brief scsi_is_slow_sgl - checks for slow SGL
+ *
+ * @param num_sges - number of sges in SGL
+ * @param small_mid_sge - True is the SGL contains an SGE which is smaller than
+ * 4KB and its not the 1st or last SGE in the SGL
+ */
+bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge);
+
+/**
+ * @brief init_scsi_sgl_context - initializes SGL task context
+ *
+ * @param sgl_params - SGL context parameters to initialize (output parameter)
+ * @param data_desc - context struct containing SGEs array to set (output
+ * parameter)
+ * @param sgl_task_params - SGL parameters (input)
+ */
+void init_scsi_sgl_context(struct scsi_sgl_params *sgl_params,
+ struct scsi_cached_sges *ctx_data_desc,
+ struct scsi_sgl_task_params *sgl_task_params);
+#endif
diff --git a/drivers/scsi/qedf/qedf.h b/drivers/scsi/qedf/qedf.h
new file mode 100644
index 000000000..c5c0bbdaf
--- /dev/null
+++ b/drivers/scsi/qedf/qedf.h
@@ -0,0 +1,604 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#ifndef _QEDFC_H_
+#define _QEDFC_H_
+
+#include <scsi/libfcoe.h>
+#include <scsi/libfc.h>
+#include <scsi/fc/fc_fip.h>
+#include <scsi/fc/fc_fc2.h>
+#include <scsi/scsi_tcq.h>
+
+/* qedf_hsi.h needs to before included any qed includes */
+#include "qedf_hsi.h"
+
+#include <linux/qed/qed_if.h>
+#include <linux/qed/qed_fcoe_if.h>
+#include <linux/qed/qed_ll2_if.h>
+#include "qedf_version.h"
+#include "qedf_dbg.h"
+#include "drv_fcoe_fw_funcs.h"
+
+/* Helpers to extract upper and lower 32-bits of pointer */
+#define U64_HI(val) ((u32)(((u64)(val)) >> 32))
+#define U64_LO(val) ((u32)(((u64)(val)) & 0xffffffff))
+
+#define QEDF_DESCR "QLogic FCoE Offload Driver"
+#define QEDF_MODULE_NAME "qedf"
+
+#define QEDF_FLOGI_RETRY_CNT 3
+#define QEDF_RPORT_RETRY_CNT 255
+#define QEDF_MAX_SESSIONS 1024
+#define QEDF_MAX_PAYLOAD 2048
+#define QEDF_MAX_BDS_PER_CMD 256
+#define QEDF_MAX_BD_LEN 0xffff
+#define QEDF_BD_SPLIT_SZ 0x1000
+#define QEDF_PAGE_SIZE 4096
+#define QED_HW_DMA_BOUNDARY 0xfff
+#define QEDF_MAX_SGLEN_FOR_CACHESGL ((1U << 16) - 1)
+#define QEDF_MFS (QEDF_MAX_PAYLOAD + \
+ sizeof(struct fc_frame_header))
+#define QEDF_MAX_NPIV 64
+#define QEDF_TM_TIMEOUT 10
+#define QEDF_ABORT_TIMEOUT (10 * 1000)
+#define QEDF_CLEANUP_TIMEOUT 1
+#define QEDF_MAX_CDB_LEN 16
+#define QEDF_LL2_BUF_SIZE 2500 /* Buffer size required for LL2 Rx */
+
+#define UPSTREAM_REMOVE 1
+#define UPSTREAM_KEEP 1
+
+struct qedf_mp_req {
+ uint32_t req_len;
+ void *req_buf;
+ dma_addr_t req_buf_dma;
+ struct scsi_sge *mp_req_bd;
+ dma_addr_t mp_req_bd_dma;
+ struct fc_frame_header req_fc_hdr;
+
+ uint32_t resp_len;
+ void *resp_buf;
+ dma_addr_t resp_buf_dma;
+ struct scsi_sge *mp_resp_bd;
+ dma_addr_t mp_resp_bd_dma;
+ struct fc_frame_header resp_fc_hdr;
+};
+
+struct qedf_els_cb_arg {
+ struct qedf_ioreq *aborted_io_req;
+ struct qedf_ioreq *io_req;
+ u8 op; /* Used to keep track of ELS op */
+ uint16_t l2_oxid;
+ u32 offset; /* Used for sequence cleanup */
+ u8 r_ctl; /* Used for sequence cleanup */
+};
+
+enum qedf_ioreq_event {
+ QEDF_IOREQ_EV_NONE,
+ QEDF_IOREQ_EV_ABORT_SUCCESS,
+ QEDF_IOREQ_EV_ABORT_FAILED,
+ QEDF_IOREQ_EV_SEND_RRQ,
+ QEDF_IOREQ_EV_ELS_TMO,
+ QEDF_IOREQ_EV_ELS_ERR_DETECT,
+ QEDF_IOREQ_EV_ELS_FLUSH,
+ QEDF_IOREQ_EV_CLEANUP_SUCCESS,
+ QEDF_IOREQ_EV_CLEANUP_FAILED,
+};
+
+#define FC_GOOD 0
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER (0x1<<2)
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER (0x1<<3)
+#define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID (0x1<<0)
+#define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID (0x1<<1)
+struct qedf_ioreq {
+ struct list_head link;
+ uint16_t xid;
+ struct scsi_cmnd *sc_cmd;
+#define QEDF_SCSI_CMD 1
+#define QEDF_TASK_MGMT_CMD 2
+#define QEDF_ABTS 3
+#define QEDF_ELS 4
+#define QEDF_CLEANUP 5
+#define QEDF_SEQ_CLEANUP 6
+ u8 cmd_type;
+#define QEDF_CMD_OUTSTANDING 0x0
+#define QEDF_CMD_IN_ABORT 0x1
+#define QEDF_CMD_IN_CLEANUP 0x2
+#define QEDF_CMD_SRR_SENT 0x3
+#define QEDF_CMD_DIRTY 0x4
+#define QEDF_CMD_ERR_SCSI_DONE 0x5
+ u8 io_req_flags;
+ uint8_t tm_flags;
+ struct qedf_rport *fcport;
+#define QEDF_CMD_ST_INACTIVE 0
+#define QEDFC_CMD_ST_IO_ACTIVE 1
+#define QEDFC_CMD_ST_ABORT_ACTIVE 2
+#define QEDFC_CMD_ST_ABORT_ACTIVE_EH 3
+#define QEDFC_CMD_ST_CLEANUP_ACTIVE 4
+#define QEDFC_CMD_ST_CLEANUP_ACTIVE_EH 5
+#define QEDFC_CMD_ST_RRQ_ACTIVE 6
+#define QEDFC_CMD_ST_RRQ_WAIT 7
+#define QEDFC_CMD_ST_OXID_RETIRE_WAIT 8
+#define QEDFC_CMD_ST_TMF_ACTIVE 9
+#define QEDFC_CMD_ST_DRAIN_ACTIVE 10
+#define QEDFC_CMD_ST_CLEANED 11
+#define QEDFC_CMD_ST_ELS_ACTIVE 12
+ atomic_t state;
+ unsigned long flags;
+ enum qedf_ioreq_event event;
+ size_t data_xfer_len;
+ /* ID: 001: Alloc cmd (qedf_alloc_cmd) */
+ /* ID: 002: Initiate ABTS (qedf_initiate_abts) */
+ /* ID: 003: For RRQ (qedf_process_abts_compl) */
+ struct kref refcount;
+ struct qedf_cmd_mgr *cmd_mgr;
+ struct io_bdt *bd_tbl;
+ struct delayed_work timeout_work;
+ struct completion tm_done;
+ struct completion abts_done;
+ struct completion cleanup_done;
+ struct fcoe_task_context *task;
+ struct fcoe_task_params *task_params;
+ struct scsi_sgl_task_params *sgl_task_params;
+ int idx;
+ int lun;
+/*
+ * Need to allocate enough room for both sense data and FCP response data
+ * which has a max length of 8 bytes according to spec.
+ */
+#define QEDF_SCSI_SENSE_BUFFERSIZE (SCSI_SENSE_BUFFERSIZE + 8)
+ uint8_t *sense_buffer;
+ dma_addr_t sense_buffer_dma;
+ u32 fcp_resid;
+ u32 fcp_rsp_len;
+ u32 fcp_sns_len;
+ u8 cdb_status;
+ u8 fcp_status;
+ u8 fcp_rsp_code;
+ u8 scsi_comp_flags;
+#define QEDF_MAX_REUSE 0xfff
+ u16 reuse_count;
+ struct qedf_mp_req mp_req;
+ void (*cb_func)(struct qedf_els_cb_arg *cb_arg);
+ struct qedf_els_cb_arg *cb_arg;
+ int fp_idx;
+ unsigned int cpu;
+ unsigned int int_cpu;
+#define QEDF_IOREQ_UNKNOWN_SGE 1
+#define QEDF_IOREQ_SLOW_SGE 2
+#define QEDF_IOREQ_FAST_SGE 3
+ u8 sge_type;
+ struct delayed_work rrq_work;
+
+ /* Used for sequence level recovery; i.e. REC/SRR */
+ uint32_t rx_buf_off;
+ uint32_t tx_buf_off;
+ uint32_t rx_id;
+ uint32_t task_retry_identifier;
+
+ /*
+ * Used to tell if we need to return a SCSI command
+ * during some form of error processing.
+ */
+ bool return_scsi_cmd_on_abts;
+
+ unsigned int alloc;
+};
+
+struct qedf_cmd_priv {
+ struct qedf_ioreq *io_req;
+};
+
+static inline struct qedf_cmd_priv *qedf_priv(struct scsi_cmnd *cmd)
+{
+ return scsi_cmd_priv(cmd);
+}
+
+extern struct workqueue_struct *qedf_io_wq;
+
+struct qedf_rport {
+ spinlock_t rport_lock;
+#define QEDF_RPORT_SESSION_READY 1
+#define QEDF_RPORT_UPLOADING_CONNECTION 2
+#define QEDF_RPORT_IN_RESET 3
+#define QEDF_RPORT_IN_LUN_RESET 4
+#define QEDF_RPORT_IN_TARGET_RESET 5
+ unsigned long flags;
+ int lun_reset_lun;
+ unsigned long retry_delay_timestamp;
+ struct fc_rport *rport;
+ struct fc_rport_priv *rdata;
+ struct qedf_ctx *qedf;
+ u32 handle; /* Handle from qed */
+ u32 fw_cid; /* fw_cid from qed */
+ void __iomem *p_doorbell;
+ /* Send queue management */
+ atomic_t free_sqes;
+ atomic_t ios_to_queue;
+ atomic_t num_active_ios;
+ struct fcoe_wqe *sq;
+ dma_addr_t sq_dma;
+ u16 sq_prod_idx;
+ u16 fw_sq_prod_idx;
+ u16 sq_con_idx;
+ u32 sq_mem_size;
+ void *sq_pbl;
+ dma_addr_t sq_pbl_dma;
+ u32 sq_pbl_size;
+ u32 sid;
+#define QEDF_RPORT_TYPE_DISK 0
+#define QEDF_RPORT_TYPE_TAPE 1
+ uint dev_type; /* Disk or tape */
+ struct list_head peers;
+};
+
+/* Used to contain LL2 skb's in ll2_skb_list */
+struct qedf_skb_work {
+ struct work_struct work;
+ struct sk_buff *skb;
+ struct qedf_ctx *qedf;
+};
+
+struct qedf_fastpath {
+#define QEDF_SB_ID_NULL 0xffff
+ u16 sb_id;
+ struct qed_sb_info *sb_info;
+ struct qedf_ctx *qedf;
+ /* Keep track of number of completions on this fastpath */
+ unsigned long completions;
+ uint32_t cq_num_entries;
+};
+
+/* Used to pass fastpath information needed to process CQEs */
+struct qedf_io_work {
+ struct work_struct work;
+ struct fcoe_cqe cqe;
+ struct qedf_ctx *qedf;
+ struct fc_frame *fp;
+};
+
+struct qedf_glbl_q_params {
+ u64 hw_p_cq; /* Completion queue PBL */
+ u64 hw_p_rq; /* Request queue PBL */
+ u64 hw_p_cmdq; /* Command queue PBL */
+};
+
+struct global_queue {
+ struct fcoe_cqe *cq;
+ dma_addr_t cq_dma;
+ u32 cq_mem_size;
+ u32 cq_cons_idx; /* Completion queue consumer index */
+ u32 cq_prod_idx;
+
+ void *cq_pbl;
+ dma_addr_t cq_pbl_dma;
+ u32 cq_pbl_size;
+};
+
+/* I/O tracing entry */
+#define QEDF_IO_TRACE_SIZE 2048
+struct qedf_io_log {
+#define QEDF_IO_TRACE_REQ 0
+#define QEDF_IO_TRACE_RSP 1
+ uint8_t direction;
+ uint16_t task_id;
+ uint32_t port_id; /* Remote port fabric ID */
+ int lun;
+ unsigned char op; /* SCSI CDB */
+ uint8_t lba[4];
+ unsigned int bufflen; /* SCSI buffer length */
+ unsigned int sg_count; /* Number of SG elements */
+ int result; /* Result passed back to mid-layer */
+ unsigned long jiffies; /* Time stamp when I/O logged */
+ int refcount; /* Reference count for task id */
+ unsigned int req_cpu; /* CPU that the task is queued on */
+ unsigned int int_cpu; /* Interrupt CPU that the task is received on */
+ unsigned int rsp_cpu; /* CPU that task is returned on */
+ u8 sge_type; /* Did we take the slow, single or fast SGE path */
+};
+
+/* Number of entries in BDQ */
+#define QEDF_BDQ_SIZE 256
+#define QEDF_BDQ_BUF_SIZE 2072
+
+/* DMA coherent buffers for BDQ */
+struct qedf_bdq_buf {
+ void *buf_addr;
+ dma_addr_t buf_dma;
+};
+
+/* Main adapter struct */
+struct qedf_ctx {
+ struct qedf_dbg_ctx dbg_ctx;
+ struct fcoe_ctlr ctlr;
+ struct fc_lport *lport;
+ u8 data_src_addr[ETH_ALEN];
+#define QEDF_LINK_DOWN 0
+#define QEDF_LINK_UP 1
+ atomic_t link_state;
+#define QEDF_DCBX_PENDING 0
+#define QEDF_DCBX_DONE 1
+ atomic_t dcbx;
+#define QEDF_NULL_VLAN_ID -1
+#define QEDF_FALLBACK_VLAN 1002
+#define QEDF_DEFAULT_PRIO 3
+ int vlan_id;
+ u8 prio;
+ struct qed_dev *cdev;
+ struct qed_dev_fcoe_info dev_info;
+ struct qed_int_info int_info;
+ uint16_t last_command;
+ spinlock_t hba_lock;
+ struct pci_dev *pdev;
+ u64 wwnn;
+ u64 wwpn;
+ u8 __aligned(16) mac[ETH_ALEN];
+ struct list_head fcports;
+ atomic_t num_offloads;
+ unsigned int curr_conn_id;
+ struct workqueue_struct *ll2_recv_wq;
+ struct workqueue_struct *link_update_wq;
+ struct devlink *devlink;
+ struct delayed_work link_update;
+ struct delayed_work link_recovery;
+ struct completion flogi_compl;
+ struct completion fipvlan_compl;
+
+ /*
+ * Used to tell if we're in the window where we are waiting for
+ * the link to come back up before informting fcoe that the link is
+ * done.
+ */
+ atomic_t link_down_tmo_valid;
+#define QEDF_TIMER_INTERVAL (1 * HZ)
+ struct timer_list timer; /* One second book keeping timer */
+#define QEDF_DRAIN_ACTIVE 1
+#define QEDF_LL2_STARTED 2
+#define QEDF_UNLOADING 3
+#define QEDF_GRCDUMP_CAPTURE 4
+#define QEDF_IN_RECOVERY 5
+#define QEDF_DBG_STOP_IO 6
+#define QEDF_PROBING 8
+ unsigned long flags; /* Miscellaneous state flags */
+ int fipvlan_retries;
+ u8 num_queues;
+ struct global_queue **global_queues;
+ /* Pointer to array of queue structures */
+ struct qedf_glbl_q_params *p_cpuq;
+ /* Physical address of array of queue structures */
+ dma_addr_t hw_p_cpuq;
+
+ struct qedf_bdq_buf bdq[QEDF_BDQ_SIZE];
+ void *bdq_pbl;
+ dma_addr_t bdq_pbl_dma;
+ size_t bdq_pbl_mem_size;
+ void *bdq_pbl_list;
+ dma_addr_t bdq_pbl_list_dma;
+ u8 bdq_pbl_list_num_entries;
+ void __iomem *bdq_primary_prod;
+ void __iomem *bdq_secondary_prod;
+ uint16_t bdq_prod_idx;
+
+ /* Structure for holding all the fastpath for this qedf_ctx */
+ struct qedf_fastpath *fp_array;
+ struct qed_fcoe_tid tasks;
+ struct qedf_cmd_mgr *cmd_mgr;
+ /* Holds the PF parameters we pass to qed to start he FCoE function */
+ struct qed_pf_params pf_params;
+ /* Used to time middle path ELS and TM commands */
+ struct workqueue_struct *timer_work_queue;
+
+#define QEDF_IO_WORK_MIN 64
+ mempool_t *io_mempool;
+ struct workqueue_struct *dpc_wq;
+ struct delayed_work recovery_work;
+ struct delayed_work board_disable_work;
+ struct delayed_work grcdump_work;
+ struct delayed_work stag_work;
+
+ u32 slow_sge_ios;
+ u32 fast_sge_ios;
+
+ uint8_t *grcdump;
+ uint32_t grcdump_size;
+
+ struct qedf_io_log io_trace_buf[QEDF_IO_TRACE_SIZE];
+ spinlock_t io_trace_lock;
+ uint16_t io_trace_idx;
+
+ bool stop_io_on_error;
+
+ u32 flogi_cnt;
+ u32 flogi_failed;
+ u32 flogi_pending;
+
+ /* Used for fc statistics */
+ struct mutex stats_mutex;
+ u64 input_requests;
+ u64 output_requests;
+ u64 control_requests;
+ u64 packet_aborts;
+ u64 alloc_failures;
+ u8 lun_resets;
+ u8 target_resets;
+ u8 task_set_fulls;
+ u8 busy;
+ /* Used for flush routine */
+ struct mutex flush_mutex;
+};
+
+struct io_bdt {
+ struct qedf_ioreq *io_req;
+ struct scsi_sge *bd_tbl;
+ dma_addr_t bd_tbl_dma;
+ u16 bd_valid;
+};
+
+struct qedf_cmd_mgr {
+ struct qedf_ctx *qedf;
+ u16 idx;
+ struct io_bdt **io_bdt_pool;
+#define FCOE_PARAMS_NUM_TASKS 2048
+ struct qedf_ioreq cmds[FCOE_PARAMS_NUM_TASKS];
+ spinlock_t lock;
+ atomic_t free_list_cnt;
+};
+
+/* Stolen from qed_cxt_api.h and adapted for qed_fcoe_info
+ * Usage:
+ *
+ * void *ptr;
+ * ptr = qedf_get_task_mem(&qedf->tasks, 128);
+ */
+static inline void *qedf_get_task_mem(struct qed_fcoe_tid *info, u32 tid)
+{
+ return (void *)(info->blocks[tid / info->num_tids_per_block] +
+ (tid % info->num_tids_per_block) * info->size);
+}
+
+static inline void qedf_stop_all_io(struct qedf_ctx *qedf)
+{
+ set_bit(QEDF_DBG_STOP_IO, &qedf->flags);
+}
+
+/*
+ * Externs
+ */
+
+/*
+ * (QEDF_LOG_NPIV | QEDF_LOG_SESS | QEDF_LOG_LPORT | QEDF_LOG_ELS | QEDF_LOG_MQ
+ * | QEDF_LOG_IO | QEDF_LOG_UNSOL | QEDF_LOG_SCSI_TM | QEDF_LOG_MP_REQ |
+ * QEDF_LOG_EVT | QEDF_LOG_CONN | QEDF_LOG_DISC | QEDF_LOG_INFO)
+ */
+#define QEDF_DEFAULT_LOG_MASK 0x3CFB6
+extern const struct qed_fcoe_ops *qed_ops;
+extern uint qedf_dump_frames;
+extern uint qedf_io_tracing;
+extern uint qedf_stop_io_on_error;
+extern uint qedf_link_down_tmo;
+#define QEDF_RETRY_DELAY_MAX 600 /* 60 seconds */
+extern bool qedf_retry_delay;
+extern uint qedf_debug;
+
+extern struct qedf_cmd_mgr *qedf_cmd_mgr_alloc(struct qedf_ctx *qedf);
+extern void qedf_cmd_mgr_free(struct qedf_cmd_mgr *cmgr);
+extern int qedf_queuecommand(struct Scsi_Host *host,
+ struct scsi_cmnd *sc_cmd);
+extern void qedf_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb);
+extern u8 *qedf_get_src_mac(struct fc_lport *lport);
+extern void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb);
+extern void qedf_fcoe_send_vlan_req(struct qedf_ctx *qedf);
+extern void qedf_scsi_completion(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *io_req);
+extern void qedf_process_warning_compl(struct qedf_ctx *qedf,
+ struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
+extern void qedf_process_error_detect(struct qedf_ctx *qedf,
+ struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
+extern void qedf_flush_active_ios(struct qedf_rport *fcport, int lun);
+extern void qedf_release_cmd(struct kref *ref);
+extern int qedf_initiate_abts(struct qedf_ioreq *io_req,
+ bool return_scsi_cmd_on_abts);
+extern void qedf_process_abts_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *io_req);
+extern struct qedf_ioreq *qedf_alloc_cmd(struct qedf_rport *fcport,
+ u8 cmd_type);
+
+extern const struct attribute_group *qedf_host_groups[];
+extern void qedf_cmd_timer_set(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
+ unsigned int timer_msec);
+extern int qedf_init_mp_req(struct qedf_ioreq *io_req);
+extern void qedf_init_mp_task(struct qedf_ioreq *io_req,
+ struct fcoe_task_context *task_ctx, struct fcoe_wqe *sqe);
+extern u16 qedf_get_sqe_idx(struct qedf_rport *fcport);
+extern void qedf_ring_doorbell(struct qedf_rport *fcport);
+extern void qedf_process_els_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *els_req);
+extern int qedf_send_rrq(struct qedf_ioreq *aborted_io_req);
+extern int qedf_send_adisc(struct qedf_rport *fcport, struct fc_frame *fp);
+extern int qedf_initiate_cleanup(struct qedf_ioreq *io_req,
+ bool return_scsi_cmd_on_abts);
+extern void qedf_process_cleanup_compl(struct qedf_ctx *qedf,
+ struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
+extern int qedf_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags);
+extern void qedf_process_tmf_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *io_req);
+extern void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe);
+extern void qedf_scsi_done(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
+ int result);
+extern void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id);
+extern void qedf_create_sysfs_ctx_attr(struct qedf_ctx *qedf);
+extern void qedf_remove_sysfs_ctx_attr(struct qedf_ctx *qedf);
+extern void qedf_capture_grc_dump(struct qedf_ctx *qedf);
+bool qedf_wait_for_upload(struct qedf_ctx *qedf);
+extern void qedf_process_unsol_compl(struct qedf_ctx *qedf, uint16_t que_idx,
+ struct fcoe_cqe *cqe);
+extern void qedf_restart_rport(struct qedf_rport *fcport);
+extern int qedf_send_rec(struct qedf_ioreq *orig_io_req);
+extern int qedf_post_io_req(struct qedf_rport *fcport,
+ struct qedf_ioreq *io_req);
+extern void qedf_process_seq_cleanup_compl(struct qedf_ctx *qedf,
+ struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
+extern int qedf_send_flogi(struct qedf_ctx *qedf);
+extern void qedf_get_protocol_tlv_data(void *dev, void *data);
+extern void qedf_fp_io_handler(struct work_struct *work);
+extern void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data);
+extern void qedf_wq_grcdump(struct work_struct *work);
+void qedf_stag_change_work(struct work_struct *work);
+void qedf_ctx_soft_reset(struct fc_lport *lport);
+extern void qedf_board_disable_work(struct work_struct *work);
+extern void qedf_schedule_hw_err_handler(void *dev,
+ enum qed_hw_err_type err_type);
+
+#define FCOE_WORD_TO_BYTE 4
+#define QEDF_MAX_TASK_NUM 0xFFFF
+#define QL45xxx 0x165C
+#define QL41xxx 0x8080
+#define MAX_CT_PAYLOAD 2048
+#define DISCOVERED_PORTS 4
+#define NUMBER_OF_PORTS 1
+
+struct fip_vlan {
+ struct ethhdr eth;
+ struct fip_header fip;
+ struct {
+ struct fip_mac_desc mac;
+ struct fip_wwn_desc wwnn;
+ } desc;
+};
+
+/* SQ/CQ Sizes */
+#define GBL_RSVD_TASKS 16
+#define NUM_TASKS_PER_CONNECTION 1024
+#define NUM_RW_TASKS_PER_CONNECTION 512
+#define FCOE_PARAMS_CQ_NUM_ENTRIES FCOE_PARAMS_NUM_TASKS
+
+#define FCOE_PARAMS_CMDQ_NUM_ENTRIES FCOE_PARAMS_NUM_TASKS
+#define SQ_NUM_ENTRIES NUM_TASKS_PER_CONNECTION
+
+#define QEDF_FCOE_PARAMS_GL_RQ_PI 0
+#define QEDF_FCOE_PARAMS_GL_CMD_PI 1
+
+#define QEDF_READ (1 << 1)
+#define QEDF_WRITE (1 << 0)
+#define MAX_FIBRE_LUNS 0xffffffff
+
+#define MIN_NUM_CPUS_MSIX(x) min_t(u32, x->dev_info.num_cqs, \
+ num_online_cpus())
+
+/*
+ * PCI function probe defines
+ */
+/* Probe/remove called during normal PCI probe */
+#define QEDF_MODE_NORMAL 0
+/* Probe/remove called from qed error recovery */
+#define QEDF_MODE_RECOVERY 1
+
+#define SUPPORTED_25000baseKR_Full (1<<27)
+#define SUPPORTED_50000baseKR2_Full (1<<28)
+#define SUPPORTED_100000baseKR4_Full (1<<29)
+#define SUPPORTED_100000baseCR4_Full (1<<30)
+
+#endif
diff --git a/drivers/scsi/qedf/qedf_attr.c b/drivers/scsi/qedf/qedf_attr.c
new file mode 100644
index 000000000..8d8c760ee
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_attr.c
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#include "qedf.h"
+
+inline bool qedf_is_vport(struct qedf_ctx *qedf)
+{
+ return qedf->lport->vport != NULL;
+}
+
+/* Get base qedf for physical port from vport */
+static struct qedf_ctx *qedf_get_base_qedf(struct qedf_ctx *qedf)
+{
+ struct fc_lport *lport;
+ struct fc_lport *base_lport;
+
+ if (!(qedf_is_vport(qedf)))
+ return NULL;
+
+ lport = qedf->lport;
+ base_lport = shost_priv(vport_to_shost(lport->vport));
+ return lport_priv(base_lport);
+}
+
+static ssize_t fcoe_mac_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct fc_lport *lport = shost_priv(class_to_shost(dev));
+ u32 port_id;
+ u8 lport_src_id[3];
+ u8 fcoe_mac[6];
+
+ port_id = fc_host_port_id(lport->host);
+ lport_src_id[2] = (port_id & 0x000000FF);
+ lport_src_id[1] = (port_id & 0x0000FF00) >> 8;
+ lport_src_id[0] = (port_id & 0x00FF0000) >> 16;
+ fc_fcoe_set_mac(fcoe_mac, lport_src_id);
+
+ return scnprintf(buf, PAGE_SIZE, "%pM\n", fcoe_mac);
+}
+
+static ssize_t fka_period_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct fc_lport *lport = shost_priv(class_to_shost(dev));
+ struct qedf_ctx *qedf = lport_priv(lport);
+ int fka_period = -1;
+
+ if (qedf_is_vport(qedf))
+ qedf = qedf_get_base_qedf(qedf);
+
+ if (qedf->ctlr.sel_fcf)
+ fka_period = qedf->ctlr.sel_fcf->fka_period;
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n", fka_period);
+}
+
+static DEVICE_ATTR_RO(fcoe_mac);
+static DEVICE_ATTR_RO(fka_period);
+
+static struct attribute *qedf_host_attrs[] = {
+ &dev_attr_fcoe_mac.attr,
+ &dev_attr_fka_period.attr,
+ NULL,
+};
+
+static const struct attribute_group qedf_host_attr_group = {
+ .attrs = qedf_host_attrs
+};
+
+const struct attribute_group *qedf_host_groups[] = {
+ &qedf_host_attr_group,
+ NULL
+};
+
+extern const struct qed_fcoe_ops *qed_ops;
+
+void qedf_capture_grc_dump(struct qedf_ctx *qedf)
+{
+ struct qedf_ctx *base_qedf;
+
+ /* Make sure we use the base qedf to take the GRC dump */
+ if (qedf_is_vport(qedf))
+ base_qedf = qedf_get_base_qedf(qedf);
+ else
+ base_qedf = qedf;
+
+ if (test_bit(QEDF_GRCDUMP_CAPTURE, &base_qedf->flags)) {
+ QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_INFO,
+ "GRC Dump already captured.\n");
+ return;
+ }
+
+
+ qedf_get_grc_dump(base_qedf->cdev, qed_ops->common,
+ &base_qedf->grcdump, &base_qedf->grcdump_size);
+ QEDF_ERR(&(base_qedf->dbg_ctx), "GRC Dump captured.\n");
+ set_bit(QEDF_GRCDUMP_CAPTURE, &base_qedf->flags);
+ qedf_uevent_emit(base_qedf->lport->host, QEDF_UEVENT_CODE_GRCDUMP,
+ NULL);
+}
+
+static ssize_t
+qedf_sysfs_read_grcdump(struct file *filep, struct kobject *kobj,
+ struct bin_attribute *ba, char *buf, loff_t off,
+ size_t count)
+{
+ ssize_t ret = 0;
+ struct fc_lport *lport = shost_priv(dev_to_shost(container_of(kobj,
+ struct device, kobj)));
+ struct qedf_ctx *qedf = lport_priv(lport);
+
+ if (test_bit(QEDF_GRCDUMP_CAPTURE, &qedf->flags)) {
+ ret = memory_read_from_buffer(buf, count, &off,
+ qedf->grcdump, qedf->grcdump_size);
+ } else {
+ QEDF_ERR(&(qedf->dbg_ctx), "GRC Dump not captured!\n");
+ }
+
+ return ret;
+}
+
+static ssize_t
+qedf_sysfs_write_grcdump(struct file *filep, struct kobject *kobj,
+ struct bin_attribute *ba, char *buf, loff_t off,
+ size_t count)
+{
+ struct fc_lport *lport = NULL;
+ struct qedf_ctx *qedf = NULL;
+ long reading;
+ int ret = 0;
+
+ if (off != 0)
+ return ret;
+
+
+ lport = shost_priv(dev_to_shost(container_of(kobj,
+ struct device, kobj)));
+ qedf = lport_priv(lport);
+
+ buf[1] = 0;
+ ret = kstrtol(buf, 10, &reading);
+ if (ret) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Invalid input, err(%d)\n", ret);
+ return ret;
+ }
+
+ switch (reading) {
+ case 0:
+ memset(qedf->grcdump, 0, qedf->grcdump_size);
+ clear_bit(QEDF_GRCDUMP_CAPTURE, &qedf->flags);
+ break;
+ case 1:
+ qedf_capture_grc_dump(qedf);
+ break;
+ }
+
+ return count;
+}
+
+static struct bin_attribute sysfs_grcdump_attr = {
+ .attr = {
+ .name = "grcdump",
+ .mode = S_IRUSR | S_IWUSR,
+ },
+ .size = 0,
+ .read = qedf_sysfs_read_grcdump,
+ .write = qedf_sysfs_write_grcdump,
+};
+
+static struct sysfs_bin_attrs bin_file_entries[] = {
+ {"grcdump", &sysfs_grcdump_attr},
+ {NULL},
+};
+
+void qedf_create_sysfs_ctx_attr(struct qedf_ctx *qedf)
+{
+ qedf_create_sysfs_attr(qedf->lport->host, bin_file_entries);
+}
+
+void qedf_remove_sysfs_ctx_attr(struct qedf_ctx *qedf)
+{
+ qedf_remove_sysfs_attr(qedf->lport->host, bin_file_entries);
+}
diff --git a/drivers/scsi/qedf/qedf_dbg.c b/drivers/scsi/qedf/qedf_dbg.c
new file mode 100644
index 000000000..0d2aed828
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_dbg.c
@@ -0,0 +1,175 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#include "qedf_dbg.h"
+#include <linux/vmalloc.h>
+
+void
+qedf_dbg_err(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
+ const char *fmt, ...)
+{
+ va_list va;
+ struct va_format vaf;
+
+ va_start(va, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &va;
+
+ if (likely(qedf) && likely(qedf->pdev))
+ pr_err("[%s]:[%s:%d]:%d: %pV", dev_name(&(qedf->pdev->dev)),
+ func, line, qedf->host_no, &vaf);
+ else
+ pr_err("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf);
+
+ va_end(va);
+}
+
+void
+qedf_dbg_warn(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
+ const char *fmt, ...)
+{
+ va_list va;
+ struct va_format vaf;
+
+ va_start(va, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &va;
+
+ if (!(qedf_debug & QEDF_LOG_WARN))
+ goto ret;
+
+ if (likely(qedf) && likely(qedf->pdev))
+ pr_warn("[%s]:[%s:%d]:%d: %pV", dev_name(&(qedf->pdev->dev)),
+ func, line, qedf->host_no, &vaf);
+ else
+ pr_warn("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf);
+
+ret:
+ va_end(va);
+}
+
+void
+qedf_dbg_notice(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
+ const char *fmt, ...)
+{
+ va_list va;
+ struct va_format vaf;
+
+ va_start(va, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &va;
+
+ if (!(qedf_debug & QEDF_LOG_NOTICE))
+ goto ret;
+
+ if (likely(qedf) && likely(qedf->pdev))
+ pr_notice("[%s]:[%s:%d]:%d: %pV",
+ dev_name(&(qedf->pdev->dev)), func, line,
+ qedf->host_no, &vaf);
+ else
+ pr_notice("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf);
+
+ret:
+ va_end(va);
+}
+
+void
+qedf_dbg_info(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
+ u32 level, const char *fmt, ...)
+{
+ va_list va;
+ struct va_format vaf;
+
+ va_start(va, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &va;
+
+ if (!(qedf_debug & level))
+ goto ret;
+
+ if (likely(qedf) && likely(qedf->pdev))
+ pr_info("[%s]:[%s:%d]:%d: %pV", dev_name(&(qedf->pdev->dev)),
+ func, line, qedf->host_no, &vaf);
+ else
+ pr_info("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf);
+
+ret:
+ va_end(va);
+}
+
+int
+qedf_alloc_grc_dump_buf(u8 **buf, uint32_t len)
+{
+ *buf = vzalloc(len);
+ if (!(*buf))
+ return -ENOMEM;
+
+ return 0;
+}
+
+void
+qedf_free_grc_dump_buf(uint8_t **buf)
+{
+ vfree(*buf);
+ *buf = NULL;
+}
+
+int
+qedf_get_grc_dump(struct qed_dev *cdev, const struct qed_common_ops *common,
+ u8 **buf, uint32_t *grcsize)
+{
+ if (!*buf)
+ return -EINVAL;
+
+ return common->dbg_all_data(cdev, *buf);
+}
+
+void
+qedf_uevent_emit(struct Scsi_Host *shost, u32 code, char *msg)
+{
+ char event_string[40];
+ char *envp[] = {event_string, NULL};
+
+ memset(event_string, 0, sizeof(event_string));
+ switch (code) {
+ case QEDF_UEVENT_CODE_GRCDUMP:
+ if (msg)
+ strscpy(event_string, msg, sizeof(event_string));
+ else
+ sprintf(event_string, "GRCDUMP=%u", shost->host_no);
+ break;
+ default:
+ /* do nothing */
+ break;
+ }
+
+ kobject_uevent_env(&shost->shost_gendev.kobj, KOBJ_CHANGE, envp);
+}
+
+int
+qedf_create_sysfs_attr(struct Scsi_Host *shost, struct sysfs_bin_attrs *iter)
+{
+ int ret = 0;
+
+ for (; iter->name; iter++) {
+ ret = sysfs_create_bin_file(&shost->shost_gendev.kobj,
+ iter->attr);
+ if (ret)
+ pr_err("Unable to create sysfs %s attr, err(%d).\n",
+ iter->name, ret);
+ }
+ return ret;
+}
+
+void
+qedf_remove_sysfs_attr(struct Scsi_Host *shost, struct sysfs_bin_attrs *iter)
+{
+ for (; iter->name; iter++)
+ sysfs_remove_bin_file(&shost->shost_gendev.kobj, iter->attr);
+}
diff --git a/drivers/scsi/qedf/qedf_dbg.h b/drivers/scsi/qedf/qedf_dbg.h
new file mode 100644
index 000000000..5ec2b817c
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_dbg.h
@@ -0,0 +1,158 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#ifndef _QEDF_DBG_H_
+#define _QEDF_DBG_H_
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/compiler.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <scsi/scsi_transport.h>
+#include <linux/fs.h>
+
+#include <linux/qed/common_hsi.h>
+#include <linux/qed/qed_if.h>
+
+extern uint qedf_debug;
+
+/* Debug print level definitions */
+#define QEDF_LOG_DEFAULT 0x1 /* Set default logging mask */
+#define QEDF_LOG_INFO 0x2 /*
+ * Informational logs,
+ * MAC address, WWPN, WWNN
+ */
+#define QEDF_LOG_DISC 0x4 /* Init, discovery, rport */
+#define QEDF_LOG_LL2 0x8 /* LL2, VLAN logs */
+#define QEDF_LOG_CONN 0x10 /* Connection setup, cleanup */
+#define QEDF_LOG_EVT 0x20 /* Events, link, mtu */
+#define QEDF_LOG_TIMER 0x40 /* Timer events */
+#define QEDF_LOG_MP_REQ 0x80 /* Middle Path (MP) logs */
+#define QEDF_LOG_SCSI_TM 0x100 /* SCSI Aborts, Task Mgmt */
+#define QEDF_LOG_UNSOL 0x200 /* unsolicited event logs */
+#define QEDF_LOG_IO 0x400 /* scsi cmd, completion */
+#define QEDF_LOG_MQ 0x800 /* Multi Queue logs */
+#define QEDF_LOG_BSG 0x1000 /* BSG logs */
+#define QEDF_LOG_DEBUGFS 0x2000 /* debugFS logs */
+#define QEDF_LOG_LPORT 0x4000 /* lport logs */
+#define QEDF_LOG_ELS 0x8000 /* ELS logs */
+#define QEDF_LOG_NPIV 0x10000 /* NPIV logs */
+#define QEDF_LOG_SESS 0x20000 /* Connection setup, cleanup */
+#define QEDF_LOG_TID 0x80000 /*
+ * FW TID context acquire
+ * free
+ */
+#define QEDF_TRACK_TID 0x100000 /*
+ * Track TID state. To be
+ * enabled only at module load
+ * and not run-time.
+ */
+#define QEDF_TRACK_CMD_LIST 0x300000 /*
+ * Track active cmd list nodes,
+ * done with reference to TID,
+ * hence TRACK_TID also enabled.
+ */
+#define QEDF_LOG_NOTICE 0x40000000 /* Notice logs */
+#define QEDF_LOG_WARN 0x80000000 /* Warning logs */
+
+#define QEDF_DEBUGFS_LOG_LEN (2 * PAGE_SIZE)
+
+/* Debug context structure */
+struct qedf_dbg_ctx {
+ unsigned int host_no;
+ struct pci_dev *pdev;
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *bdf_dentry;
+#endif
+};
+
+#define QEDF_ERR(pdev, fmt, ...) \
+ qedf_dbg_err(pdev, __func__, __LINE__, fmt, ## __VA_ARGS__)
+#define QEDF_WARN(pdev, fmt, ...) \
+ qedf_dbg_warn(pdev, __func__, __LINE__, fmt, ## __VA_ARGS__)
+#define QEDF_NOTICE(pdev, fmt, ...) \
+ qedf_dbg_notice(pdev, __func__, __LINE__, fmt, ## __VA_ARGS__)
+#define QEDF_INFO(pdev, level, fmt, ...) \
+ qedf_dbg_info(pdev, __func__, __LINE__, level, fmt, \
+ ## __VA_ARGS__)
+__printf(4, 5)
+void qedf_dbg_err(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
+ const char *fmt, ...);
+__printf(4, 5)
+void qedf_dbg_warn(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
+ const char *, ...);
+__printf(4, 5)
+void qedf_dbg_notice(struct qedf_dbg_ctx *qedf, const char *func,
+ u32 line, const char *, ...);
+__printf(5, 6)
+void qedf_dbg_info(struct qedf_dbg_ctx *qedf, const char *func, u32 line,
+ u32 info, const char *fmt, ...);
+
+/* GRC Dump related defines */
+
+struct Scsi_Host;
+
+#define QEDF_UEVENT_CODE_GRCDUMP 0
+
+struct sysfs_bin_attrs {
+ char *name;
+ struct bin_attribute *attr;
+};
+
+extern int qedf_alloc_grc_dump_buf(uint8_t **buf, uint32_t len);
+extern void qedf_free_grc_dump_buf(uint8_t **buf);
+extern int qedf_get_grc_dump(struct qed_dev *cdev,
+ const struct qed_common_ops *common, uint8_t **buf,
+ uint32_t *grcsize);
+extern void qedf_uevent_emit(struct Scsi_Host *shost, u32 code, char *msg);
+extern int qedf_create_sysfs_attr(struct Scsi_Host *shost,
+ struct sysfs_bin_attrs *iter);
+extern void qedf_remove_sysfs_attr(struct Scsi_Host *shost,
+ struct sysfs_bin_attrs *iter);
+
+struct qedf_debugfs_ops {
+ char *name;
+ struct qedf_list_of_funcs *qedf_funcs;
+};
+
+extern const struct qedf_debugfs_ops qedf_debugfs_ops[];
+extern const struct file_operations qedf_dbg_fops[];
+
+#ifdef CONFIG_DEBUG_FS
+/* DebugFS related code */
+struct qedf_list_of_funcs {
+ char *oper_str;
+ ssize_t (*oper_func)(struct qedf_dbg_ctx *qedf);
+};
+
+#define qedf_dbg_fileops(drv, ops) \
+{ \
+ .owner = THIS_MODULE, \
+ .open = simple_open, \
+ .read = drv##_dbg_##ops##_cmd_read, \
+ .write = drv##_dbg_##ops##_cmd_write \
+}
+
+/* Used for debugfs sequential files */
+#define qedf_dbg_fileops_seq(drv, ops) \
+{ \
+ .owner = THIS_MODULE, \
+ .open = drv##_dbg_##ops##_open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+}
+
+extern void qedf_dbg_host_init(struct qedf_dbg_ctx *qedf,
+ const struct qedf_debugfs_ops *dops,
+ const struct file_operations *fops);
+extern void qedf_dbg_host_exit(struct qedf_dbg_ctx *qedf);
+extern void qedf_dbg_init(char *drv_name);
+extern void qedf_dbg_exit(void);
+#endif /* CONFIG_DEBUG_FS */
+
+#endif /* _QEDF_DBG_H_ */
diff --git a/drivers/scsi/qedf/qedf_debugfs.c b/drivers/scsi/qedf/qedf_debugfs.c
new file mode 100644
index 000000000..451fd236b
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_debugfs.c
@@ -0,0 +1,494 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 QLogic Corporation
+ */
+#ifdef CONFIG_DEBUG_FS
+
+#include <linux/uaccess.h>
+#include <linux/debugfs.h>
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+
+#include "qedf.h"
+#include "qedf_dbg.h"
+
+static struct dentry *qedf_dbg_root;
+
+/*
+ * qedf_dbg_host_init - setup the debugfs file for the pf
+ */
+void
+qedf_dbg_host_init(struct qedf_dbg_ctx *qedf,
+ const struct qedf_debugfs_ops *dops,
+ const struct file_operations *fops)
+{
+ char host_dirname[32];
+
+ QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Creating debugfs host node\n");
+ /* create pf dir */
+ sprintf(host_dirname, "host%u", qedf->host_no);
+ qedf->bdf_dentry = debugfs_create_dir(host_dirname, qedf_dbg_root);
+
+ /* create debugfs files */
+ while (dops) {
+ if (!(dops->name))
+ break;
+
+ debugfs_create_file(dops->name, 0600, qedf->bdf_dentry, qedf,
+ fops);
+ dops++;
+ fops++;
+ }
+}
+
+/*
+ * qedf_dbg_host_exit - clear out the pf's debugfs entries
+ */
+void
+qedf_dbg_host_exit(struct qedf_dbg_ctx *qedf_dbg)
+{
+ QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "Destroying debugfs host "
+ "entry\n");
+ /* remove debugfs entries of this PF */
+ debugfs_remove_recursive(qedf_dbg->bdf_dentry);
+ qedf_dbg->bdf_dentry = NULL;
+}
+
+/*
+ * qedf_dbg_init - start up debugfs for the driver
+ */
+void
+qedf_dbg_init(char *drv_name)
+{
+ QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Creating debugfs root node\n");
+
+ /* create qed dir in root of debugfs. NULL means debugfs root */
+ qedf_dbg_root = debugfs_create_dir(drv_name, NULL);
+}
+
+/*
+ * qedf_dbg_exit - clean out the driver's debugfs entries
+ */
+void
+qedf_dbg_exit(void)
+{
+ QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Destroying debugfs root "
+ "entry\n");
+
+ /* remove qed dir in root of debugfs */
+ debugfs_remove_recursive(qedf_dbg_root);
+ qedf_dbg_root = NULL;
+}
+
+const struct qedf_debugfs_ops qedf_debugfs_ops[] = {
+ { "fp_int", NULL },
+ { "io_trace", NULL },
+ { "debug", NULL },
+ { "stop_io_on_error", NULL},
+ { "driver_stats", NULL},
+ { "clear_stats", NULL},
+ { "offload_stats", NULL},
+ /* This must be last */
+ { NULL, NULL }
+};
+
+DECLARE_PER_CPU(struct qedf_percpu_iothread_s, qedf_percpu_iothreads);
+
+static ssize_t
+qedf_dbg_fp_int_cmd_read(struct file *filp, char __user *buffer, size_t count,
+ loff_t *ppos)
+{
+ ssize_t ret;
+ size_t cnt = 0;
+ char *cbuf;
+ int id;
+ struct qedf_fastpath *fp = NULL;
+ struct qedf_dbg_ctx *qedf_dbg =
+ (struct qedf_dbg_ctx *)filp->private_data;
+ struct qedf_ctx *qedf = container_of(qedf_dbg,
+ struct qedf_ctx, dbg_ctx);
+
+ QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
+
+ cbuf = vmalloc(QEDF_DEBUGFS_LOG_LEN);
+ if (!cbuf)
+ return 0;
+
+ cnt += scnprintf(cbuf + cnt, QEDF_DEBUGFS_LOG_LEN - cnt, "\nFastpath I/O completions\n\n");
+
+ for (id = 0; id < qedf->num_queues; id++) {
+ fp = &(qedf->fp_array[id]);
+ if (fp->sb_id == QEDF_SB_ID_NULL)
+ continue;
+ cnt += scnprintf(cbuf + cnt, QEDF_DEBUGFS_LOG_LEN - cnt,
+ "#%d: %lu\n", id, fp->completions);
+ }
+
+ ret = simple_read_from_buffer(buffer, count, ppos, cbuf, cnt);
+
+ vfree(cbuf);
+
+ return ret;
+}
+
+static ssize_t
+qedf_dbg_fp_int_cmd_write(struct file *filp, const char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ if (!count || *ppos)
+ return 0;
+
+ return count;
+}
+
+static ssize_t
+qedf_dbg_debug_cmd_read(struct file *filp, char __user *buffer, size_t count,
+ loff_t *ppos)
+{
+ int cnt;
+ char cbuf[32];
+ struct qedf_dbg_ctx *qedf_dbg =
+ (struct qedf_dbg_ctx *)filp->private_data;
+
+ QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "debug mask=0x%x\n", qedf_debug);
+ cnt = scnprintf(cbuf, sizeof(cbuf), "debug mask = 0x%x\n", qedf_debug);
+
+ return simple_read_from_buffer(buffer, count, ppos, cbuf, cnt);
+}
+
+static ssize_t
+qedf_dbg_debug_cmd_write(struct file *filp, const char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ uint32_t val;
+ void *kern_buf;
+ int rval;
+ struct qedf_dbg_ctx *qedf_dbg =
+ (struct qedf_dbg_ctx *)filp->private_data;
+
+ if (!count || *ppos)
+ return 0;
+
+ kern_buf = memdup_user(buffer, count);
+ if (IS_ERR(kern_buf))
+ return PTR_ERR(kern_buf);
+
+ rval = kstrtouint(kern_buf, 10, &val);
+ kfree(kern_buf);
+ if (rval)
+ return rval;
+
+ if (val == 1)
+ qedf_debug = QEDF_DEFAULT_LOG_MASK;
+ else
+ qedf_debug = val;
+
+ QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "Setting debug=0x%x.\n", val);
+ return count;
+}
+
+static ssize_t
+qedf_dbg_stop_io_on_error_cmd_read(struct file *filp, char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ int cnt;
+ char cbuf[7];
+ struct qedf_dbg_ctx *qedf_dbg =
+ (struct qedf_dbg_ctx *)filp->private_data;
+ struct qedf_ctx *qedf = container_of(qedf_dbg,
+ struct qedf_ctx, dbg_ctx);
+
+ QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
+ cnt = scnprintf(cbuf, sizeof(cbuf), "%s\n",
+ qedf->stop_io_on_error ? "true" : "false");
+
+ return simple_read_from_buffer(buffer, count, ppos, cbuf, cnt);
+}
+
+static ssize_t
+qedf_dbg_stop_io_on_error_cmd_write(struct file *filp,
+ const char __user *buffer, size_t count,
+ loff_t *ppos)
+{
+ void *kern_buf;
+ struct qedf_dbg_ctx *qedf_dbg =
+ (struct qedf_dbg_ctx *)filp->private_data;
+ struct qedf_ctx *qedf = container_of(qedf_dbg, struct qedf_ctx,
+ dbg_ctx);
+
+ QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
+
+ if (!count || *ppos)
+ return 0;
+
+ kern_buf = memdup_user(buffer, 6);
+ if (IS_ERR(kern_buf))
+ return PTR_ERR(kern_buf);
+
+ if (strncmp(kern_buf, "false", 5) == 0)
+ qedf->stop_io_on_error = false;
+ else if (strncmp(kern_buf, "true", 4) == 0)
+ qedf->stop_io_on_error = true;
+ else if (strncmp(kern_buf, "now", 3) == 0)
+ /* Trigger from user to stop all I/O on this host */
+ set_bit(QEDF_DBG_STOP_IO, &qedf->flags);
+
+ kfree(kern_buf);
+ return count;
+}
+
+static int
+qedf_io_trace_show(struct seq_file *s, void *unused)
+{
+ int i, idx = 0;
+ struct qedf_ctx *qedf = s->private;
+ struct qedf_dbg_ctx *qedf_dbg = &qedf->dbg_ctx;
+ struct qedf_io_log *io_log;
+ unsigned long flags;
+
+ if (!qedf_io_tracing) {
+ seq_puts(s, "I/O tracing not enabled.\n");
+ goto out;
+ }
+
+ QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
+
+ spin_lock_irqsave(&qedf->io_trace_lock, flags);
+ idx = qedf->io_trace_idx;
+ for (i = 0; i < QEDF_IO_TRACE_SIZE; i++) {
+ io_log = &qedf->io_trace_buf[idx];
+ seq_printf(s, "%d:", io_log->direction);
+ seq_printf(s, "0x%x:", io_log->task_id);
+ seq_printf(s, "0x%06x:", io_log->port_id);
+ seq_printf(s, "%d:", io_log->lun);
+ seq_printf(s, "0x%02x:", io_log->op);
+ seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0],
+ io_log->lba[1], io_log->lba[2], io_log->lba[3]);
+ seq_printf(s, "%d:", io_log->bufflen);
+ seq_printf(s, "%d:", io_log->sg_count);
+ seq_printf(s, "0x%08x:", io_log->result);
+ seq_printf(s, "%lu:", io_log->jiffies);
+ seq_printf(s, "%d:", io_log->refcount);
+ seq_printf(s, "%d:", io_log->req_cpu);
+ seq_printf(s, "%d:", io_log->int_cpu);
+ seq_printf(s, "%d:", io_log->rsp_cpu);
+ seq_printf(s, "%d\n", io_log->sge_type);
+
+ idx++;
+ if (idx == QEDF_IO_TRACE_SIZE)
+ idx = 0;
+ }
+ spin_unlock_irqrestore(&qedf->io_trace_lock, flags);
+
+out:
+ return 0;
+}
+
+static int
+qedf_dbg_io_trace_open(struct inode *inode, struct file *file)
+{
+ struct qedf_dbg_ctx *qedf_dbg = inode->i_private;
+ struct qedf_ctx *qedf = container_of(qedf_dbg,
+ struct qedf_ctx, dbg_ctx);
+
+ return single_open(file, qedf_io_trace_show, qedf);
+}
+
+/* Based on fip_state enum from libfcoe.h */
+static char *fip_state_names[] = {
+ "FIP_ST_DISABLED",
+ "FIP_ST_LINK_WAIT",
+ "FIP_ST_AUTO",
+ "FIP_ST_NON_FIP",
+ "FIP_ST_ENABLED",
+ "FIP_ST_VNMP_START",
+ "FIP_ST_VNMP_PROBE1",
+ "FIP_ST_VNMP_PROBE2",
+ "FIP_ST_VNMP_CLAIM",
+ "FIP_ST_VNMP_UP",
+};
+
+/* Based on fc_rport_state enum from libfc.h */
+static char *fc_rport_state_names[] = {
+ "RPORT_ST_INIT",
+ "RPORT_ST_FLOGI",
+ "RPORT_ST_PLOGI_WAIT",
+ "RPORT_ST_PLOGI",
+ "RPORT_ST_PRLI",
+ "RPORT_ST_RTV",
+ "RPORT_ST_READY",
+ "RPORT_ST_ADISC",
+ "RPORT_ST_DELETE",
+};
+
+static int
+qedf_driver_stats_show(struct seq_file *s, void *unused)
+{
+ struct qedf_ctx *qedf = s->private;
+ struct qedf_rport *fcport;
+ struct fc_rport_priv *rdata;
+
+ seq_printf(s, "Host WWNN/WWPN: %016llx/%016llx\n",
+ qedf->wwnn, qedf->wwpn);
+ seq_printf(s, "Host NPortID: %06x\n", qedf->lport->port_id);
+ seq_printf(s, "Link State: %s\n", atomic_read(&qedf->link_state) ?
+ "Up" : "Down");
+ seq_printf(s, "Logical Link State: %s\n", qedf->lport->link_up ?
+ "Up" : "Down");
+ seq_printf(s, "FIP state: %s\n", fip_state_names[qedf->ctlr.state]);
+ seq_printf(s, "FIP VLAN ID: %d\n", qedf->vlan_id & 0xfff);
+ seq_printf(s, "FIP 802.1Q Priority: %d\n", qedf->prio);
+ if (qedf->ctlr.sel_fcf) {
+ seq_printf(s, "FCF WWPN: %016llx\n",
+ qedf->ctlr.sel_fcf->switch_name);
+ seq_printf(s, "FCF MAC: %pM\n", qedf->ctlr.sel_fcf->fcf_mac);
+ } else {
+ seq_puts(s, "FCF not selected\n");
+ }
+
+ seq_puts(s, "\nSGE stats:\n\n");
+ seq_printf(s, "cmg_mgr free io_reqs: %d\n",
+ atomic_read(&qedf->cmd_mgr->free_list_cnt));
+ seq_printf(s, "slow SGEs: %d\n", qedf->slow_sge_ios);
+ seq_printf(s, "fast SGEs: %d\n\n", qedf->fast_sge_ios);
+
+ seq_puts(s, "Offloaded ports:\n\n");
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
+ rdata = fcport->rdata;
+ if (rdata == NULL)
+ continue;
+ seq_printf(s, "%016llx/%016llx/%06x: state=%s, free_sqes=%d, num_active_ios=%d\n",
+ rdata->rport->node_name, rdata->rport->port_name,
+ rdata->ids.port_id,
+ fc_rport_state_names[rdata->rp_state],
+ atomic_read(&fcport->free_sqes),
+ atomic_read(&fcport->num_active_ios));
+ }
+ rcu_read_unlock();
+
+ return 0;
+}
+
+static int
+qedf_dbg_driver_stats_open(struct inode *inode, struct file *file)
+{
+ struct qedf_dbg_ctx *qedf_dbg = inode->i_private;
+ struct qedf_ctx *qedf = container_of(qedf_dbg,
+ struct qedf_ctx, dbg_ctx);
+
+ return single_open(file, qedf_driver_stats_show, qedf);
+}
+
+static ssize_t
+qedf_dbg_clear_stats_cmd_read(struct file *filp, char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ int cnt = 0;
+
+ /* Essentially a read stub */
+ cnt = min_t(int, count, cnt - *ppos);
+ *ppos += cnt;
+ return cnt;
+}
+
+static ssize_t
+qedf_dbg_clear_stats_cmd_write(struct file *filp,
+ const char __user *buffer, size_t count,
+ loff_t *ppos)
+{
+ struct qedf_dbg_ctx *qedf_dbg =
+ (struct qedf_dbg_ctx *)filp->private_data;
+ struct qedf_ctx *qedf = container_of(qedf_dbg, struct qedf_ctx,
+ dbg_ctx);
+
+ QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "Clearing stat counters.\n");
+
+ if (!count || *ppos)
+ return 0;
+
+ /* Clear stat counters exposed by 'stats' node */
+ qedf->slow_sge_ios = 0;
+ qedf->fast_sge_ios = 0;
+
+ return count;
+}
+
+static int
+qedf_offload_stats_show(struct seq_file *s, void *unused)
+{
+ struct qedf_ctx *qedf = s->private;
+ struct qed_fcoe_stats *fw_fcoe_stats;
+
+ fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
+ if (!fw_fcoe_stats) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
+ "fw_fcoe_stats.\n");
+ goto out;
+ }
+
+ /* Query firmware for offload stats */
+ qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
+
+ seq_printf(s, "fcoe_rx_byte_cnt=%llu\n"
+ "fcoe_rx_data_pkt_cnt=%llu\n"
+ "fcoe_rx_xfer_pkt_cnt=%llu\n"
+ "fcoe_rx_other_pkt_cnt=%llu\n"
+ "fcoe_silent_drop_pkt_cmdq_full_cnt=%u\n"
+ "fcoe_silent_drop_pkt_crc_error_cnt=%u\n"
+ "fcoe_silent_drop_pkt_task_invalid_cnt=%u\n"
+ "fcoe_silent_drop_total_pkt_cnt=%u\n"
+ "fcoe_silent_drop_pkt_rq_full_cnt=%u\n"
+ "fcoe_tx_byte_cnt=%llu\n"
+ "fcoe_tx_data_pkt_cnt=%llu\n"
+ "fcoe_tx_xfer_pkt_cnt=%llu\n"
+ "fcoe_tx_other_pkt_cnt=%llu\n",
+ fw_fcoe_stats->fcoe_rx_byte_cnt,
+ fw_fcoe_stats->fcoe_rx_data_pkt_cnt,
+ fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt,
+ fw_fcoe_stats->fcoe_rx_other_pkt_cnt,
+ fw_fcoe_stats->fcoe_silent_drop_pkt_cmdq_full_cnt,
+ fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt,
+ fw_fcoe_stats->fcoe_silent_drop_pkt_task_invalid_cnt,
+ fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt,
+ fw_fcoe_stats->fcoe_silent_drop_pkt_rq_full_cnt,
+ fw_fcoe_stats->fcoe_tx_byte_cnt,
+ fw_fcoe_stats->fcoe_tx_data_pkt_cnt,
+ fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt,
+ fw_fcoe_stats->fcoe_tx_other_pkt_cnt);
+
+ kfree(fw_fcoe_stats);
+out:
+ return 0;
+}
+
+static int
+qedf_dbg_offload_stats_open(struct inode *inode, struct file *file)
+{
+ struct qedf_dbg_ctx *qedf_dbg = inode->i_private;
+ struct qedf_ctx *qedf = container_of(qedf_dbg,
+ struct qedf_ctx, dbg_ctx);
+
+ return single_open(file, qedf_offload_stats_show, qedf);
+}
+
+const struct file_operations qedf_dbg_fops[] = {
+ qedf_dbg_fileops(qedf, fp_int),
+ qedf_dbg_fileops_seq(qedf, io_trace),
+ qedf_dbg_fileops(qedf, debug),
+ qedf_dbg_fileops(qedf, stop_io_on_error),
+ qedf_dbg_fileops_seq(qedf, driver_stats),
+ qedf_dbg_fileops(qedf, clear_stats),
+ qedf_dbg_fileops_seq(qedf, offload_stats),
+ /* This must be last */
+ { },
+};
+
+#else /* CONFIG_DEBUG_FS */
+void qedf_dbg_host_init(struct qedf_dbg_ctx *);
+void qedf_dbg_host_exit(struct qedf_dbg_ctx *);
+void qedf_dbg_init(char *);
+void qedf_dbg_exit(void);
+#endif /* CONFIG_DEBUG_FS */
diff --git a/drivers/scsi/qedf/qedf_els.c b/drivers/scsi/qedf/qedf_els.c
new file mode 100644
index 000000000..1ff5bc314
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_els.c
@@ -0,0 +1,1066 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#include "qedf.h"
+
+/* It's assumed that the lock is held when calling this function. */
+static int qedf_initiate_els(struct qedf_rport *fcport, unsigned int op,
+ void *data, uint32_t data_len,
+ void (*cb_func)(struct qedf_els_cb_arg *cb_arg),
+ struct qedf_els_cb_arg *cb_arg, uint32_t timer_msec)
+{
+ struct qedf_ctx *qedf;
+ struct fc_lport *lport;
+ struct qedf_ioreq *els_req;
+ struct qedf_mp_req *mp_req;
+ struct fc_frame_header *fc_hdr;
+ struct fcoe_task_context *task;
+ int rc = 0;
+ uint32_t did, sid;
+ uint16_t xid;
+ struct fcoe_wqe *sqe;
+ unsigned long flags;
+ u16 sqe_idx;
+
+ if (!fcport) {
+ QEDF_ERR(NULL, "fcport is NULL");
+ rc = -EINVAL;
+ goto els_err;
+ }
+
+ qedf = fcport->qedf;
+ lport = qedf->lport;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending ELS\n");
+
+ rc = fc_remote_port_chkready(fcport->rport);
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "els 0x%x: rport not ready\n", op);
+ rc = -EAGAIN;
+ goto els_err;
+ }
+ if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "els 0x%x: link is not ready\n",
+ op);
+ rc = -EAGAIN;
+ goto els_err;
+ }
+
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "els 0x%x: fcport not ready\n", op);
+ rc = -EINVAL;
+ goto els_err;
+ }
+
+ els_req = qedf_alloc_cmd(fcport, QEDF_ELS);
+ if (!els_req) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_ELS,
+ "Failed to alloc ELS request 0x%x\n", op);
+ rc = -ENOMEM;
+ goto els_err;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "initiate_els els_req = "
+ "0x%p cb_arg = %p xid = %x\n", els_req, cb_arg,
+ els_req->xid);
+ els_req->sc_cmd = NULL;
+ els_req->cmd_type = QEDF_ELS;
+ els_req->fcport = fcport;
+ els_req->cb_func = cb_func;
+ cb_arg->io_req = els_req;
+ cb_arg->op = op;
+ els_req->cb_arg = cb_arg;
+ els_req->data_xfer_len = data_len;
+
+ /* Record which cpu this request is associated with */
+ els_req->cpu = smp_processor_id();
+
+ mp_req = (struct qedf_mp_req *)&(els_req->mp_req);
+ rc = qedf_init_mp_req(els_req);
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "ELS MP request init failed\n");
+ kref_put(&els_req->refcount, qedf_release_cmd);
+ goto els_err;
+ } else {
+ rc = 0;
+ }
+
+ /* Fill ELS Payload */
+ if ((op >= ELS_LS_RJT) && (op <= ELS_AUTH_ELS)) {
+ memcpy(mp_req->req_buf, data, data_len);
+ } else {
+ QEDF_ERR(&(qedf->dbg_ctx), "Invalid ELS op 0x%x\n", op);
+ els_req->cb_func = NULL;
+ els_req->cb_arg = NULL;
+ kref_put(&els_req->refcount, qedf_release_cmd);
+ rc = -EINVAL;
+ }
+
+ if (rc)
+ goto els_err;
+
+ /* Fill FC header */
+ fc_hdr = &(mp_req->req_fc_hdr);
+
+ did = fcport->rdata->ids.port_id;
+ sid = fcport->sid;
+
+ __fc_fill_fc_hdr(fc_hdr, FC_RCTL_ELS_REQ, did, sid,
+ FC_TYPE_ELS, FC_FC_FIRST_SEQ | FC_FC_END_SEQ |
+ FC_FC_SEQ_INIT, 0);
+
+ /* Obtain exchange id */
+ xid = els_req->xid;
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+
+ sqe_idx = qedf_get_sqe_idx(fcport);
+ sqe = &fcport->sq[sqe_idx];
+ memset(sqe, 0, sizeof(struct fcoe_wqe));
+
+ /* Initialize task context for this IO request */
+ task = qedf_get_task_mem(&qedf->tasks, xid);
+ qedf_init_mp_task(els_req, task, sqe);
+
+ /* Put timer on els request */
+ if (timer_msec)
+ qedf_cmd_timer_set(qedf, els_req, timer_msec);
+
+ /* Ring doorbell */
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Ringing doorbell for ELS "
+ "req\n");
+ qedf_ring_doorbell(fcport);
+ set_bit(QEDF_CMD_OUTSTANDING, &els_req->flags);
+
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+els_err:
+ return rc;
+}
+
+void qedf_process_els_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *els_req)
+{
+ struct fcoe_cqe_midpath_info *mp_info;
+ struct qedf_rport *fcport;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered with xid = 0x%x"
+ " cmd_type = %d.\n", els_req->xid, els_req->cmd_type);
+
+ if ((els_req->event == QEDF_IOREQ_EV_ELS_FLUSH)
+ || (els_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS)
+ || (els_req->event == QEDF_IOREQ_EV_CLEANUP_FAILED)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "ELS completion xid=0x%x after flush event=0x%x",
+ els_req->xid, els_req->event);
+ return;
+ }
+
+ fcport = els_req->fcport;
+
+ /* When flush is active,
+ * let the cmds be completed from the cleanup context
+ */
+ if (test_bit(QEDF_RPORT_IN_TARGET_RESET, &fcport->flags) ||
+ test_bit(QEDF_RPORT_IN_LUN_RESET, &fcport->flags)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Dropping ELS completion xid=0x%x as fcport is flushing",
+ els_req->xid);
+ return;
+ }
+
+ clear_bit(QEDF_CMD_OUTSTANDING, &els_req->flags);
+
+ /* Kill the ELS timer */
+ cancel_delayed_work(&els_req->timeout_work);
+
+ /* Get ELS response length from CQE */
+ mp_info = &cqe->cqe_info.midpath_info;
+ els_req->mp_req.resp_len = mp_info->data_placement_size;
+
+ /* Parse ELS response */
+ if ((els_req->cb_func) && (els_req->cb_arg)) {
+ els_req->cb_func(els_req->cb_arg);
+ els_req->cb_arg = NULL;
+ }
+
+ kref_put(&els_req->refcount, qedf_release_cmd);
+}
+
+static void qedf_rrq_compl(struct qedf_els_cb_arg *cb_arg)
+{
+ struct qedf_ioreq *orig_io_req;
+ struct qedf_ioreq *rrq_req;
+ struct qedf_ctx *qedf;
+ int refcount;
+
+ rrq_req = cb_arg->io_req;
+ qedf = rrq_req->fcport->qedf;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered.\n");
+
+ orig_io_req = cb_arg->aborted_io_req;
+
+ if (!orig_io_req) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Original io_req is NULL, rrq_req = %p.\n", rrq_req);
+ goto out_free;
+ }
+
+ refcount = kref_read(&orig_io_req->refcount);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "rrq_compl: orig io = %p,"
+ " orig xid = 0x%x, rrq_xid = 0x%x, refcount=%d\n",
+ orig_io_req, orig_io_req->xid, rrq_req->xid, refcount);
+
+ /*
+ * This should return the aborted io_req to the command pool. Note that
+ * we need to check the refcound in case the original request was
+ * flushed but we get a completion on this xid.
+ */
+ if (orig_io_req && refcount > 0)
+ kref_put(&orig_io_req->refcount, qedf_release_cmd);
+
+out_free:
+ /*
+ * Release a reference to the rrq request if we timed out as the
+ * rrq completion handler is called directly from the timeout handler
+ * and not from els_compl where the reference would have normally been
+ * released.
+ */
+ if (rrq_req->event == QEDF_IOREQ_EV_ELS_TMO)
+ kref_put(&rrq_req->refcount, qedf_release_cmd);
+ kfree(cb_arg);
+}
+
+/* Assumes kref is already held by caller */
+int qedf_send_rrq(struct qedf_ioreq *aborted_io_req)
+{
+
+ struct fc_els_rrq rrq;
+ struct qedf_rport *fcport;
+ struct fc_lport *lport;
+ struct qedf_els_cb_arg *cb_arg = NULL;
+ struct qedf_ctx *qedf;
+ uint32_t sid;
+ uint32_t r_a_tov;
+ int rc;
+ int refcount;
+
+ if (!aborted_io_req) {
+ QEDF_ERR(NULL, "abort_io_req is NULL.\n");
+ return -EINVAL;
+ }
+
+ fcport = aborted_io_req->fcport;
+
+ if (!fcport) {
+ refcount = kref_read(&aborted_io_req->refcount);
+ QEDF_ERR(NULL,
+ "RRQ work was queued prior to a flush xid=0x%x, refcount=%d.\n",
+ aborted_io_req->xid, refcount);
+ kref_put(&aborted_io_req->refcount, qedf_release_cmd);
+ return -EINVAL;
+ }
+
+ /* Check that fcport is still offloaded */
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_ERR(NULL, "fcport is no longer offloaded.\n");
+ return -EINVAL;
+ }
+
+ if (!fcport->qedf) {
+ QEDF_ERR(NULL, "fcport->qedf is NULL.\n");
+ return -EINVAL;
+ }
+
+ qedf = fcport->qedf;
+
+ /*
+ * Sanity check that we can send a RRQ to make sure that refcount isn't
+ * 0
+ */
+ refcount = kref_read(&aborted_io_req->refcount);
+ if (refcount != 1) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_ELS,
+ "refcount for xid=%x io_req=%p refcount=%d is not 1.\n",
+ aborted_io_req->xid, aborted_io_req, refcount);
+ return -EINVAL;
+ }
+
+ lport = qedf->lport;
+ sid = fcport->sid;
+ r_a_tov = lport->r_a_tov;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending RRQ orig "
+ "io = %p, orig_xid = 0x%x\n", aborted_io_req,
+ aborted_io_req->xid);
+ memset(&rrq, 0, sizeof(rrq));
+
+ cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO);
+ if (!cb_arg) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate cb_arg for "
+ "RRQ\n");
+ rc = -ENOMEM;
+ goto rrq_err;
+ }
+
+ cb_arg->aborted_io_req = aborted_io_req;
+
+ rrq.rrq_cmd = ELS_RRQ;
+ hton24(rrq.rrq_s_id, sid);
+ rrq.rrq_ox_id = htons(aborted_io_req->xid);
+ rrq.rrq_rx_id =
+ htons(aborted_io_req->task->tstorm_st_context.read_write.rx_id);
+
+ rc = qedf_initiate_els(fcport, ELS_RRQ, &rrq, sizeof(rrq),
+ qedf_rrq_compl, cb_arg, r_a_tov);
+
+rrq_err:
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "RRQ failed - release orig io "
+ "req 0x%x\n", aborted_io_req->xid);
+ kfree(cb_arg);
+ kref_put(&aborted_io_req->refcount, qedf_release_cmd);
+ }
+ return rc;
+}
+
+static void qedf_process_l2_frame_compl(struct qedf_rport *fcport,
+ struct fc_frame *fp,
+ u16 l2_oxid)
+{
+ struct fc_lport *lport = fcport->qedf->lport;
+ struct fc_frame_header *fh;
+ u32 crc;
+
+ fh = (struct fc_frame_header *)fc_frame_header_get(fp);
+
+ /* Set the OXID we return to what libfc used */
+ if (l2_oxid != FC_XID_UNKNOWN)
+ fh->fh_ox_id = htons(l2_oxid);
+
+ /* Setup header fields */
+ fh->fh_r_ctl = FC_RCTL_ELS_REP;
+ fh->fh_type = FC_TYPE_ELS;
+ /* Last sequence, end sequence */
+ fh->fh_f_ctl[0] = 0x98;
+ hton24(fh->fh_d_id, lport->port_id);
+ hton24(fh->fh_s_id, fcport->rdata->ids.port_id);
+ fh->fh_rx_id = 0xffff;
+
+ /* Set frame attributes */
+ crc = fcoe_fc_crc(fp);
+ fc_frame_init(fp);
+ fr_dev(fp) = lport;
+ fr_sof(fp) = FC_SOF_I3;
+ fr_eof(fp) = FC_EOF_T;
+ fr_crc(fp) = cpu_to_le32(~crc);
+
+ /* Send completed request to libfc */
+ fc_exch_recv(lport, fp);
+}
+
+/*
+ * In instances where an ELS command times out we may need to restart the
+ * rport by logging out and then logging back in.
+ */
+void qedf_restart_rport(struct qedf_rport *fcport)
+{
+ struct fc_lport *lport;
+ struct fc_rport_priv *rdata;
+ u32 port_id;
+ unsigned long flags;
+
+ if (!fcport) {
+ QEDF_ERR(NULL, "fcport is NULL.\n");
+ return;
+ }
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+ if (test_bit(QEDF_RPORT_IN_RESET, &fcport->flags) ||
+ !test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) ||
+ test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
+ QEDF_ERR(&(fcport->qedf->dbg_ctx), "fcport %p already in reset or not offloaded.\n",
+ fcport);
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+ return;
+ }
+
+ /* Set that we are now in reset */
+ set_bit(QEDF_RPORT_IN_RESET, &fcport->flags);
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+
+ rdata = fcport->rdata;
+ if (rdata && !kref_get_unless_zero(&rdata->kref)) {
+ fcport->rdata = NULL;
+ rdata = NULL;
+ }
+
+ if (rdata && rdata->rp_state == RPORT_ST_READY) {
+ lport = fcport->qedf->lport;
+ port_id = rdata->ids.port_id;
+ QEDF_ERR(&(fcport->qedf->dbg_ctx),
+ "LOGO port_id=%x.\n", port_id);
+ fc_rport_logoff(rdata);
+ kref_put(&rdata->kref, fc_rport_destroy);
+ mutex_lock(&lport->disc.disc_mutex);
+ /* Recreate the rport and log back in */
+ rdata = fc_rport_create(lport, port_id);
+ mutex_unlock(&lport->disc.disc_mutex);
+ if (rdata)
+ fc_rport_login(rdata);
+ fcport->rdata = rdata;
+ }
+ clear_bit(QEDF_RPORT_IN_RESET, &fcport->flags);
+}
+
+static void qedf_l2_els_compl(struct qedf_els_cb_arg *cb_arg)
+{
+ struct qedf_ioreq *els_req;
+ struct qedf_rport *fcport;
+ struct qedf_mp_req *mp_req;
+ struct fc_frame *fp;
+ struct fc_frame_header *fh, *mp_fc_hdr;
+ void *resp_buf, *fc_payload;
+ u32 resp_len;
+ u16 l2_oxid;
+
+ l2_oxid = cb_arg->l2_oxid;
+ els_req = cb_arg->io_req;
+
+ if (!els_req) {
+ QEDF_ERR(NULL, "els_req is NULL.\n");
+ goto free_arg;
+ }
+
+ /*
+ * If we are flushing the command just free the cb_arg as none of the
+ * response data will be valid.
+ */
+ if (els_req->event == QEDF_IOREQ_EV_ELS_FLUSH) {
+ QEDF_ERR(NULL, "els_req xid=0x%x event is flush.\n",
+ els_req->xid);
+ goto free_arg;
+ }
+
+ fcport = els_req->fcport;
+ mp_req = &(els_req->mp_req);
+ mp_fc_hdr = &(mp_req->resp_fc_hdr);
+ resp_len = mp_req->resp_len;
+ resp_buf = mp_req->resp_buf;
+
+ /*
+ * If a middle path ELS command times out, don't try to return
+ * the command but rather do any internal cleanup and then libfc
+ * timeout the command and clean up its internal resources.
+ */
+ if (els_req->event == QEDF_IOREQ_EV_ELS_TMO) {
+ /*
+ * If ADISC times out, libfc will timeout the exchange and then
+ * try to send a PLOGI which will timeout since the session is
+ * still offloaded. Force libfc to logout the session which
+ * will offload the connection and allow the PLOGI response to
+ * flow over the LL2 path.
+ */
+ if (cb_arg->op == ELS_ADISC)
+ qedf_restart_rport(fcport);
+ return;
+ }
+
+ if (sizeof(struct fc_frame_header) + resp_len > QEDF_PAGE_SIZE) {
+ QEDF_ERR(&(fcport->qedf->dbg_ctx), "resp_len is "
+ "beyond page size.\n");
+ goto free_arg;
+ }
+
+ fp = fc_frame_alloc(fcport->qedf->lport, resp_len);
+ if (!fp) {
+ QEDF_ERR(&(fcport->qedf->dbg_ctx),
+ "fc_frame_alloc failure.\n");
+ return;
+ }
+
+ /* Copy frame header from firmware into fp */
+ fh = (struct fc_frame_header *)fc_frame_header_get(fp);
+ memcpy(fh, mp_fc_hdr, sizeof(struct fc_frame_header));
+
+ /* Copy payload from firmware into fp */
+ fc_payload = fc_frame_payload_get(fp, resp_len);
+ memcpy(fc_payload, resp_buf, resp_len);
+
+ QEDF_INFO(&(fcport->qedf->dbg_ctx), QEDF_LOG_ELS,
+ "Completing OX_ID 0x%x back to libfc.\n", l2_oxid);
+ qedf_process_l2_frame_compl(fcport, fp, l2_oxid);
+
+free_arg:
+ kfree(cb_arg);
+}
+
+int qedf_send_adisc(struct qedf_rport *fcport, struct fc_frame *fp)
+{
+ struct fc_els_adisc *adisc;
+ struct fc_frame_header *fh;
+ struct fc_lport *lport = fcport->qedf->lport;
+ struct qedf_els_cb_arg *cb_arg = NULL;
+ struct qedf_ctx *qedf;
+ uint32_t r_a_tov = lport->r_a_tov;
+ int rc;
+
+ qedf = fcport->qedf;
+ fh = fc_frame_header_get(fp);
+
+ cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO);
+ if (!cb_arg) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate cb_arg for "
+ "ADISC\n");
+ rc = -ENOMEM;
+ goto adisc_err;
+ }
+ cb_arg->l2_oxid = ntohs(fh->fh_ox_id);
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "Sending ADISC ox_id=0x%x.\n", cb_arg->l2_oxid);
+
+ adisc = fc_frame_payload_get(fp, sizeof(*adisc));
+
+ rc = qedf_initiate_els(fcport, ELS_ADISC, adisc, sizeof(*adisc),
+ qedf_l2_els_compl, cb_arg, r_a_tov);
+
+adisc_err:
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "ADISC failed.\n");
+ kfree(cb_arg);
+ }
+ return rc;
+}
+
+static void qedf_srr_compl(struct qedf_els_cb_arg *cb_arg)
+{
+ struct qedf_ioreq *orig_io_req;
+ struct qedf_ioreq *srr_req;
+ struct qedf_mp_req *mp_req;
+ struct fc_frame_header *mp_fc_hdr, *fh;
+ struct fc_frame *fp;
+ void *resp_buf, *fc_payload;
+ u32 resp_len;
+ struct fc_lport *lport;
+ struct qedf_ctx *qedf;
+ int refcount;
+ u8 opcode;
+
+ srr_req = cb_arg->io_req;
+ qedf = srr_req->fcport->qedf;
+ lport = qedf->lport;
+
+ orig_io_req = cb_arg->aborted_io_req;
+
+ if (!orig_io_req) {
+ QEDF_ERR(NULL, "orig_io_req is NULL.\n");
+ goto out_free;
+ }
+
+ clear_bit(QEDF_CMD_SRR_SENT, &orig_io_req->flags);
+
+ if (srr_req->event != QEDF_IOREQ_EV_ELS_TMO &&
+ srr_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
+ cancel_delayed_work_sync(&orig_io_req->timeout_work);
+
+ refcount = kref_read(&orig_io_req->refcount);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered: orig_io=%p,"
+ " orig_io_xid=0x%x, rec_xid=0x%x, refcount=%d\n",
+ orig_io_req, orig_io_req->xid, srr_req->xid, refcount);
+
+ /* If a SRR times out, simply free resources */
+ if (srr_req->event == QEDF_IOREQ_EV_ELS_TMO) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "ELS timeout rec_xid=0x%x.\n", srr_req->xid);
+ goto out_put;
+ }
+
+ /* Normalize response data into struct fc_frame */
+ mp_req = &(srr_req->mp_req);
+ mp_fc_hdr = &(mp_req->resp_fc_hdr);
+ resp_len = mp_req->resp_len;
+ resp_buf = mp_req->resp_buf;
+
+ fp = fc_frame_alloc(lport, resp_len);
+ if (!fp) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "fc_frame_alloc failure.\n");
+ goto out_put;
+ }
+
+ /* Copy frame header from firmware into fp */
+ fh = (struct fc_frame_header *)fc_frame_header_get(fp);
+ memcpy(fh, mp_fc_hdr, sizeof(struct fc_frame_header));
+
+ /* Copy payload from firmware into fp */
+ fc_payload = fc_frame_payload_get(fp, resp_len);
+ memcpy(fc_payload, resp_buf, resp_len);
+
+ opcode = fc_frame_payload_op(fp);
+ switch (opcode) {
+ case ELS_LS_ACC:
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "SRR success.\n");
+ break;
+ case ELS_LS_RJT:
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_ELS,
+ "SRR rejected.\n");
+ qedf_initiate_abts(orig_io_req, true);
+ break;
+ }
+
+ fc_frame_free(fp);
+out_put:
+ /* Put reference for original command since SRR completed */
+ kref_put(&orig_io_req->refcount, qedf_release_cmd);
+out_free:
+ kfree(cb_arg);
+}
+
+static int qedf_send_srr(struct qedf_ioreq *orig_io_req, u32 offset, u8 r_ctl)
+{
+ struct fcp_srr srr;
+ struct qedf_ctx *qedf;
+ struct qedf_rport *fcport;
+ struct fc_lport *lport;
+ struct qedf_els_cb_arg *cb_arg = NULL;
+ u32 r_a_tov;
+ int rc;
+
+ if (!orig_io_req) {
+ QEDF_ERR(NULL, "orig_io_req is NULL.\n");
+ return -EINVAL;
+ }
+
+ fcport = orig_io_req->fcport;
+
+ /* Check that fcport is still offloaded */
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_ERR(NULL, "fcport is no longer offloaded.\n");
+ return -EINVAL;
+ }
+
+ if (!fcport->qedf) {
+ QEDF_ERR(NULL, "fcport->qedf is NULL.\n");
+ return -EINVAL;
+ }
+
+ /* Take reference until SRR command completion */
+ kref_get(&orig_io_req->refcount);
+
+ qedf = fcport->qedf;
+ lport = qedf->lport;
+ r_a_tov = lport->r_a_tov;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending SRR orig_io=%p, "
+ "orig_xid=0x%x\n", orig_io_req, orig_io_req->xid);
+ memset(&srr, 0, sizeof(srr));
+
+ cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO);
+ if (!cb_arg) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate cb_arg for "
+ "SRR\n");
+ rc = -ENOMEM;
+ goto srr_err;
+ }
+
+ cb_arg->aborted_io_req = orig_io_req;
+
+ srr.srr_op = ELS_SRR;
+ srr.srr_ox_id = htons(orig_io_req->xid);
+ srr.srr_rx_id = htons(orig_io_req->rx_id);
+ srr.srr_rel_off = htonl(offset);
+ srr.srr_r_ctl = r_ctl;
+
+ rc = qedf_initiate_els(fcport, ELS_SRR, &srr, sizeof(srr),
+ qedf_srr_compl, cb_arg, r_a_tov);
+
+srr_err:
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "SRR failed - release orig_io_req"
+ "=0x%x\n", orig_io_req->xid);
+ kfree(cb_arg);
+ /* If we fail to queue SRR, send ABTS to orig_io */
+ qedf_initiate_abts(orig_io_req, true);
+ kref_put(&orig_io_req->refcount, qedf_release_cmd);
+ } else
+ /* Tell other threads that SRR is in progress */
+ set_bit(QEDF_CMD_SRR_SENT, &orig_io_req->flags);
+
+ return rc;
+}
+
+static void qedf_initiate_seq_cleanup(struct qedf_ioreq *orig_io_req,
+ u32 offset, u8 r_ctl)
+{
+ struct qedf_rport *fcport;
+ unsigned long flags;
+ struct qedf_els_cb_arg *cb_arg;
+ struct fcoe_wqe *sqe;
+ u16 sqe_idx;
+
+ fcport = orig_io_req->fcport;
+
+ QEDF_INFO(&(fcport->qedf->dbg_ctx), QEDF_LOG_ELS,
+ "Doing sequence cleanup for xid=0x%x offset=%u.\n",
+ orig_io_req->xid, offset);
+
+ cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO);
+ if (!cb_arg) {
+ QEDF_ERR(&(fcport->qedf->dbg_ctx), "Unable to allocate cb_arg "
+ "for sequence cleanup\n");
+ return;
+ }
+
+ /* Get reference for cleanup request */
+ kref_get(&orig_io_req->refcount);
+
+ orig_io_req->cmd_type = QEDF_SEQ_CLEANUP;
+ cb_arg->offset = offset;
+ cb_arg->r_ctl = r_ctl;
+ orig_io_req->cb_arg = cb_arg;
+
+ qedf_cmd_timer_set(fcport->qedf, orig_io_req,
+ QEDF_CLEANUP_TIMEOUT * HZ);
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+
+ sqe_idx = qedf_get_sqe_idx(fcport);
+ sqe = &fcport->sq[sqe_idx];
+ memset(sqe, 0, sizeof(struct fcoe_wqe));
+ orig_io_req->task_params->sqe = sqe;
+
+ init_initiator_sequence_recovery_fcoe_task(orig_io_req->task_params,
+ offset);
+ qedf_ring_doorbell(fcport);
+
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+}
+
+void qedf_process_seq_cleanup_compl(struct qedf_ctx *qedf,
+ struct fcoe_cqe *cqe, struct qedf_ioreq *io_req)
+{
+ int rc;
+ struct qedf_els_cb_arg *cb_arg;
+
+ cb_arg = io_req->cb_arg;
+
+ /* If we timed out just free resources */
+ if (io_req->event == QEDF_IOREQ_EV_ELS_TMO || !cqe) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "cqe is NULL or timeout event (0x%x)", io_req->event);
+ goto free;
+ }
+
+ /* Kill the timer we put on the request */
+ cancel_delayed_work_sync(&io_req->timeout_work);
+
+ rc = qedf_send_srr(io_req, cb_arg->offset, cb_arg->r_ctl);
+ if (rc)
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to send SRR, I/O will "
+ "abort, xid=0x%x.\n", io_req->xid);
+free:
+ kfree(cb_arg);
+ kref_put(&io_req->refcount, qedf_release_cmd);
+}
+
+static bool qedf_requeue_io_req(struct qedf_ioreq *orig_io_req)
+{
+ struct qedf_rport *fcport;
+ struct qedf_ioreq *new_io_req;
+ unsigned long flags;
+ bool rc = false;
+
+ fcport = orig_io_req->fcport;
+ if (!fcport) {
+ QEDF_ERR(NULL, "fcport is NULL.\n");
+ goto out;
+ }
+
+ if (!orig_io_req->sc_cmd) {
+ QEDF_ERR(&(fcport->qedf->dbg_ctx), "sc_cmd is NULL for "
+ "xid=0x%x.\n", orig_io_req->xid);
+ goto out;
+ }
+
+ new_io_req = qedf_alloc_cmd(fcport, QEDF_SCSI_CMD);
+ if (!new_io_req) {
+ QEDF_ERR(&(fcport->qedf->dbg_ctx), "Could not allocate new "
+ "io_req.\n");
+ goto out;
+ }
+
+ new_io_req->sc_cmd = orig_io_req->sc_cmd;
+
+ /*
+ * This keeps the sc_cmd struct from being returned to the tape
+ * driver and being requeued twice. We do need to put a reference
+ * for the original I/O request since we will not do a SCSI completion
+ * for it.
+ */
+ orig_io_req->sc_cmd = NULL;
+ kref_put(&orig_io_req->refcount, qedf_release_cmd);
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+
+ /* kref for new command released in qedf_post_io_req on error */
+ if (qedf_post_io_req(fcport, new_io_req)) {
+ QEDF_ERR(&(fcport->qedf->dbg_ctx), "Unable to post io_req\n");
+ /* Return SQE to pool */
+ atomic_inc(&fcport->free_sqes);
+ } else {
+ QEDF_INFO(&(fcport->qedf->dbg_ctx), QEDF_LOG_ELS,
+ "Reissued SCSI command from orig_xid=0x%x on "
+ "new_xid=0x%x.\n", orig_io_req->xid, new_io_req->xid);
+ /*
+ * Abort the original I/O but do not return SCSI command as
+ * it has been reissued on another OX_ID.
+ */
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+ qedf_initiate_abts(orig_io_req, false);
+ goto out;
+ }
+
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+out:
+ return rc;
+}
+
+
+static void qedf_rec_compl(struct qedf_els_cb_arg *cb_arg)
+{
+ struct qedf_ioreq *orig_io_req;
+ struct qedf_ioreq *rec_req;
+ struct qedf_mp_req *mp_req;
+ struct fc_frame_header *mp_fc_hdr, *fh;
+ struct fc_frame *fp;
+ void *resp_buf, *fc_payload;
+ u32 resp_len;
+ struct fc_lport *lport;
+ struct qedf_ctx *qedf;
+ int refcount;
+ enum fc_rctl r_ctl;
+ struct fc_els_ls_rjt *rjt;
+ struct fc_els_rec_acc *acc;
+ u8 opcode;
+ u32 offset, e_stat;
+ struct scsi_cmnd *sc_cmd;
+ bool srr_needed = false;
+
+ rec_req = cb_arg->io_req;
+ qedf = rec_req->fcport->qedf;
+ lport = qedf->lport;
+
+ orig_io_req = cb_arg->aborted_io_req;
+
+ if (!orig_io_req) {
+ QEDF_ERR(NULL, "orig_io_req is NULL.\n");
+ goto out_free;
+ }
+
+ if (rec_req->event != QEDF_IOREQ_EV_ELS_TMO &&
+ rec_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
+ cancel_delayed_work_sync(&orig_io_req->timeout_work);
+
+ refcount = kref_read(&orig_io_req->refcount);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered: orig_io=%p,"
+ " orig_io_xid=0x%x, rec_xid=0x%x, refcount=%d\n",
+ orig_io_req, orig_io_req->xid, rec_req->xid, refcount);
+
+ /* If a REC times out, free resources */
+ if (rec_req->event == QEDF_IOREQ_EV_ELS_TMO) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Got TMO event, orig_io_req %p orig_io_xid=0x%x.\n",
+ orig_io_req, orig_io_req->xid);
+ goto out_put;
+ }
+
+ /* Normalize response data into struct fc_frame */
+ mp_req = &(rec_req->mp_req);
+ mp_fc_hdr = &(mp_req->resp_fc_hdr);
+ resp_len = mp_req->resp_len;
+ acc = resp_buf = mp_req->resp_buf;
+
+ fp = fc_frame_alloc(lport, resp_len);
+ if (!fp) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "fc_frame_alloc failure.\n");
+ goto out_put;
+ }
+
+ /* Copy frame header from firmware into fp */
+ fh = (struct fc_frame_header *)fc_frame_header_get(fp);
+ memcpy(fh, mp_fc_hdr, sizeof(struct fc_frame_header));
+
+ /* Copy payload from firmware into fp */
+ fc_payload = fc_frame_payload_get(fp, resp_len);
+ memcpy(fc_payload, resp_buf, resp_len);
+
+ opcode = fc_frame_payload_op(fp);
+ if (opcode == ELS_LS_RJT) {
+ rjt = fc_frame_payload_get(fp, sizeof(*rjt));
+ if (!rjt) {
+ QEDF_ERR(&qedf->dbg_ctx, "payload get failed");
+ goto out_free_frame;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "Received LS_RJT for REC: er_reason=0x%x, "
+ "er_explan=0x%x.\n", rjt->er_reason, rjt->er_explan);
+ /*
+ * The following response(s) mean that we need to reissue the
+ * request on another exchange. We need to do this without
+ * informing the upper layers lest it cause an application
+ * error.
+ */
+ if ((rjt->er_reason == ELS_RJT_LOGIC ||
+ rjt->er_reason == ELS_RJT_UNAB) &&
+ rjt->er_explan == ELS_EXPL_OXID_RXID) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "Handle CMD LOST case.\n");
+ qedf_requeue_io_req(orig_io_req);
+ }
+ } else if (opcode == ELS_LS_ACC) {
+ offset = ntohl(acc->reca_fc4value);
+ e_stat = ntohl(acc->reca_e_stat);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "Received LS_ACC for REC: offset=0x%x, e_stat=0x%x.\n",
+ offset, e_stat);
+ if (e_stat & ESB_ST_SEQ_INIT) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "Target has the seq init\n");
+ goto out_free_frame;
+ }
+ sc_cmd = orig_io_req->sc_cmd;
+ if (!sc_cmd) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "sc_cmd is NULL for xid=0x%x.\n",
+ orig_io_req->xid);
+ goto out_free_frame;
+ }
+ /* SCSI write case */
+ if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) {
+ if (offset == orig_io_req->data_xfer_len) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "WRITE - response lost.\n");
+ r_ctl = FC_RCTL_DD_CMD_STATUS;
+ srr_needed = true;
+ offset = 0;
+ } else {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "WRITE - XFER_RDY/DATA lost.\n");
+ r_ctl = FC_RCTL_DD_DATA_DESC;
+ /* Use data from warning CQE instead of REC */
+ offset = orig_io_req->tx_buf_off;
+ }
+ /* SCSI read case */
+ } else {
+ if (orig_io_req->rx_buf_off ==
+ orig_io_req->data_xfer_len) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "READ - response lost.\n");
+ srr_needed = true;
+ r_ctl = FC_RCTL_DD_CMD_STATUS;
+ offset = 0;
+ } else {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "READ - DATA lost.\n");
+ /*
+ * For read case we always set the offset to 0
+ * for sequence recovery task.
+ */
+ offset = 0;
+ r_ctl = FC_RCTL_DD_SOL_DATA;
+ }
+ }
+
+ if (srr_needed)
+ qedf_send_srr(orig_io_req, offset, r_ctl);
+ else
+ qedf_initiate_seq_cleanup(orig_io_req, offset, r_ctl);
+ }
+
+out_free_frame:
+ fc_frame_free(fp);
+out_put:
+ /* Put reference for original command since REC completed */
+ kref_put(&orig_io_req->refcount, qedf_release_cmd);
+out_free:
+ kfree(cb_arg);
+}
+
+/* Assumes kref is already held by caller */
+int qedf_send_rec(struct qedf_ioreq *orig_io_req)
+{
+
+ struct fc_els_rec rec;
+ struct qedf_rport *fcport;
+ struct fc_lport *lport;
+ struct qedf_els_cb_arg *cb_arg = NULL;
+ struct qedf_ctx *qedf;
+ uint32_t sid;
+ uint32_t r_a_tov;
+ int rc;
+
+ if (!orig_io_req) {
+ QEDF_ERR(NULL, "orig_io_req is NULL.\n");
+ return -EINVAL;
+ }
+
+ fcport = orig_io_req->fcport;
+
+ /* Check that fcport is still offloaded */
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_ERR(NULL, "fcport is no longer offloaded.\n");
+ return -EINVAL;
+ }
+
+ if (!fcport->qedf) {
+ QEDF_ERR(NULL, "fcport->qedf is NULL.\n");
+ return -EINVAL;
+ }
+
+ /* Take reference until REC command completion */
+ kref_get(&orig_io_req->refcount);
+
+ qedf = fcport->qedf;
+ lport = qedf->lport;
+ sid = fcport->sid;
+ r_a_tov = lport->r_a_tov;
+
+ memset(&rec, 0, sizeof(rec));
+
+ cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO);
+ if (!cb_arg) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate cb_arg for "
+ "REC\n");
+ rc = -ENOMEM;
+ goto rec_err;
+ }
+
+ cb_arg->aborted_io_req = orig_io_req;
+
+ rec.rec_cmd = ELS_REC;
+ hton24(rec.rec_s_id, sid);
+ rec.rec_ox_id = htons(orig_io_req->xid);
+ rec.rec_rx_id =
+ htons(orig_io_req->task->tstorm_st_context.read_write.rx_id);
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending REC orig_io=%p, "
+ "orig_xid=0x%x rx_id=0x%x\n", orig_io_req,
+ orig_io_req->xid, rec.rec_rx_id);
+ rc = qedf_initiate_els(fcport, ELS_REC, &rec, sizeof(rec),
+ qedf_rec_compl, cb_arg, r_a_tov);
+
+rec_err:
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "REC failed - release orig_io_req"
+ "=0x%x\n", orig_io_req->xid);
+ kfree(cb_arg);
+ kref_put(&orig_io_req->refcount, qedf_release_cmd);
+ }
+ return rc;
+}
diff --git a/drivers/scsi/qedf/qedf_fip.c b/drivers/scsi/qedf/qedf_fip.c
new file mode 100644
index 000000000..ad6a56ce7
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_fip.c
@@ -0,0 +1,301 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include "qedf.h"
+
+extern const struct qed_fcoe_ops *qed_ops;
+/*
+ * FIP VLAN functions that will eventually move to libfcoe.
+ */
+
+void qedf_fcoe_send_vlan_req(struct qedf_ctx *qedf)
+{
+ struct sk_buff *skb;
+ char *eth_fr;
+ struct fip_vlan *vlan;
+#define MY_FIP_ALL_FCF_MACS ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 2 })
+ static u8 my_fcoe_all_fcfs[ETH_ALEN] = MY_FIP_ALL_FCF_MACS;
+ unsigned long flags = 0;
+ int rc;
+
+ skb = dev_alloc_skb(sizeof(struct fip_vlan));
+ if (!skb) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Failed to allocate skb.\n");
+ return;
+ }
+
+ eth_fr = (char *)skb->data;
+ vlan = (struct fip_vlan *)eth_fr;
+
+ memset(vlan, 0, sizeof(*vlan));
+ ether_addr_copy(vlan->eth.h_source, qedf->mac);
+ ether_addr_copy(vlan->eth.h_dest, my_fcoe_all_fcfs);
+ vlan->eth.h_proto = htons(ETH_P_FIP);
+
+ vlan->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
+ vlan->fip.fip_op = htons(FIP_OP_VLAN);
+ vlan->fip.fip_subcode = FIP_SC_VL_REQ;
+ vlan->fip.fip_dl_len = htons(sizeof(vlan->desc) / FIP_BPW);
+
+ vlan->desc.mac.fd_desc.fip_dtype = FIP_DT_MAC;
+ vlan->desc.mac.fd_desc.fip_dlen = sizeof(vlan->desc.mac) / FIP_BPW;
+ ether_addr_copy(vlan->desc.mac.fd_mac, qedf->mac);
+
+ vlan->desc.wwnn.fd_desc.fip_dtype = FIP_DT_NAME;
+ vlan->desc.wwnn.fd_desc.fip_dlen = sizeof(vlan->desc.wwnn) / FIP_BPW;
+ put_unaligned_be64(qedf->lport->wwnn, &vlan->desc.wwnn.fd_wwn);
+
+ skb_put(skb, sizeof(*vlan));
+ skb->protocol = htons(ETH_P_FIP);
+ skb_reset_mac_header(skb);
+ skb_reset_network_header(skb);
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Sending FIP VLAN "
+ "request.");
+
+ if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Cannot send vlan request "
+ "because link is not up.\n");
+
+ kfree_skb(skb);
+ return;
+ }
+
+ set_bit(QED_LL2_XMIT_FLAGS_FIP_DISCOVERY, &flags);
+ rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, flags);
+ if (rc) {
+ QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
+ kfree_skb(skb);
+ return;
+ }
+
+}
+
+static void qedf_fcoe_process_vlan_resp(struct qedf_ctx *qedf,
+ struct sk_buff *skb)
+{
+ struct fip_header *fiph;
+ struct fip_desc *desc;
+ u16 vid = 0;
+ ssize_t rlen;
+ size_t dlen;
+
+ fiph = (struct fip_header *)(((void *)skb->data) + 2 * ETH_ALEN + 2);
+
+ rlen = ntohs(fiph->fip_dl_len) * 4;
+ desc = (struct fip_desc *)(fiph + 1);
+ while (rlen > 0) {
+ dlen = desc->fip_dlen * FIP_BPW;
+ switch (desc->fip_dtype) {
+ case FIP_DT_VLAN:
+ vid = ntohs(((struct fip_vlan_desc *)desc)->fd_vlan);
+ break;
+ }
+ desc = (struct fip_desc *)((char *)desc + dlen);
+ rlen -= dlen;
+ }
+
+ if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Dropping VLAN response as link is down.\n");
+ return;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "VLAN response, "
+ "vid=0x%x.\n", vid);
+
+ if (vid > 0 && qedf->vlan_id != vid) {
+ qedf_set_vlan_id(qedf, vid);
+
+ /* Inform waiter that it's ok to call fcoe_ctlr_link up() */
+ if (!completion_done(&qedf->fipvlan_compl))
+ complete(&qedf->fipvlan_compl);
+ }
+}
+
+void qedf_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+ struct qedf_ctx *qedf = container_of(fip, struct qedf_ctx, ctlr);
+ struct ethhdr *eth_hdr;
+ struct fip_header *fiph;
+ u16 op, vlan_tci = 0;
+ u8 sub;
+ int rc = -1;
+
+ if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
+ QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
+ kfree_skb(skb);
+ return;
+ }
+
+ fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
+ eth_hdr = (struct ethhdr *)skb_mac_header(skb);
+ op = ntohs(fiph->fip_op);
+ sub = fiph->fip_subcode;
+
+ /*
+ * Add VLAN tag to non-offload FIP frame based on current stored VLAN
+ * for FIP/FCoE traffic.
+ */
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
+
+ /* Get VLAN ID from skb for printing purposes */
+ __vlan_hwaccel_get_tag(skb, &vlan_tci);
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FIP frame send: "
+ "dest=%pM op=%x sub=%x vlan=%04x.", eth_hdr->h_dest, op, sub,
+ vlan_tci);
+ if (qedf_dump_frames)
+ print_hex_dump(KERN_WARNING, "fip ", DUMP_PREFIX_OFFSET, 16, 1,
+ skb->data, skb->len, false);
+
+ rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
+ if (rc) {
+ QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
+ kfree_skb(skb);
+ return;
+ }
+}
+
+static u8 fcoe_all_enode[ETH_ALEN] = FIP_ALL_ENODE_MACS;
+
+/* Process incoming FIP frames. */
+void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb)
+{
+ struct ethhdr *eth_hdr;
+ struct fip_header *fiph;
+ struct fip_desc *desc;
+ struct fip_mac_desc *mp;
+ struct fip_wwn_desc *wp;
+ struct fip_vn_desc *vp;
+ size_t rlen, dlen;
+ u16 op;
+ u8 sub;
+ bool fcf_valid = false;
+ /* Default is to handle CVL regardless of fabric id descriptor */
+ bool fabric_id_valid = true;
+ bool fc_wwpn_valid = false;
+ u64 switch_name;
+ u16 vlan = 0;
+
+ eth_hdr = (struct ethhdr *)skb_mac_header(skb);
+ fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
+ op = ntohs(fiph->fip_op);
+ sub = fiph->fip_subcode;
+
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
+ "FIP frame received: skb=%p fiph=%p source=%pM destn=%pM op=%x sub=%x vlan=%04x",
+ skb, fiph, eth_hdr->h_source, eth_hdr->h_dest, op,
+ sub, vlan);
+ if (qedf_dump_frames)
+ print_hex_dump(KERN_WARNING, "fip ", DUMP_PREFIX_OFFSET, 16, 1,
+ skb->data, skb->len, false);
+
+ if (!ether_addr_equal(eth_hdr->h_dest, qedf->mac) &&
+ !ether_addr_equal(eth_hdr->h_dest, fcoe_all_enode) &&
+ !ether_addr_equal(eth_hdr->h_dest, qedf->data_src_addr)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
+ "Dropping FIP type 0x%x pkt due to destination MAC mismatch dest_mac=%pM ctlr.dest_addr=%pM data_src_addr=%pM.\n",
+ op, eth_hdr->h_dest, qedf->mac,
+ qedf->data_src_addr);
+ kfree_skb(skb);
+ return;
+ }
+
+ /* Handle FIP VLAN resp in the driver */
+ if (op == FIP_OP_VLAN && sub == FIP_SC_VL_NOTE) {
+ qedf_fcoe_process_vlan_resp(qedf, skb);
+ kfree_skb(skb);
+ } else if (op == FIP_OP_CTRL && sub == FIP_SC_CLR_VLINK) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Clear virtual "
+ "link received.\n");
+
+ /* Check that an FCF has been selected by fcoe */
+ if (qedf->ctlr.sel_fcf == NULL) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Dropping CVL since FCF has not been selected "
+ "yet.");
+ kfree_skb(skb);
+ return;
+ }
+
+ /*
+ * We need to loop through the CVL descriptors to determine
+ * if we want to reset the fcoe link
+ */
+ rlen = ntohs(fiph->fip_dl_len) * FIP_BPW;
+ desc = (struct fip_desc *)(fiph + 1);
+ while (rlen >= sizeof(*desc)) {
+ dlen = desc->fip_dlen * FIP_BPW;
+ switch (desc->fip_dtype) {
+ case FIP_DT_MAC:
+ mp = (struct fip_mac_desc *)desc;
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Switch fd_mac=%pM.\n", mp->fd_mac);
+ if (ether_addr_equal(mp->fd_mac,
+ qedf->ctlr.sel_fcf->fcf_mac))
+ fcf_valid = true;
+ break;
+ case FIP_DT_NAME:
+ wp = (struct fip_wwn_desc *)desc;
+ switch_name = get_unaligned_be64(&wp->fd_wwn);
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Switch fd_wwn=%016llx fcf_switch_name=%016llx.\n",
+ switch_name,
+ qedf->ctlr.sel_fcf->switch_name);
+ if (switch_name ==
+ qedf->ctlr.sel_fcf->switch_name)
+ fc_wwpn_valid = true;
+ break;
+ case FIP_DT_VN_ID:
+ fabric_id_valid = false;
+ vp = (struct fip_vn_desc *)desc;
+
+ QEDF_ERR(&qedf->dbg_ctx,
+ "CVL vx_port fd_fc_id=0x%x fd_mac=%pM fd_wwpn=%016llx.\n",
+ ntoh24(vp->fd_fc_id), vp->fd_mac,
+ get_unaligned_be64(&vp->fd_wwpn));
+ /* Check for vx_port wwpn OR Check vx_port
+ * fabric ID OR Check vx_port MAC
+ */
+ if ((get_unaligned_be64(&vp->fd_wwpn) ==
+ qedf->wwpn) ||
+ (ntoh24(vp->fd_fc_id) ==
+ qedf->lport->port_id) ||
+ (ether_addr_equal(vp->fd_mac,
+ qedf->data_src_addr))) {
+ fabric_id_valid = true;
+ }
+ break;
+ default:
+ /* Ignore anything else */
+ break;
+ }
+ desc = (struct fip_desc *)((char *)desc + dlen);
+ rlen -= dlen;
+ }
+
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "fcf_valid=%d fabric_id_valid=%d fc_wwpn_valid=%d.\n",
+ fcf_valid, fabric_id_valid, fc_wwpn_valid);
+ if (fcf_valid && fabric_id_valid && fc_wwpn_valid)
+ qedf_ctx_soft_reset(qedf->lport);
+ kfree_skb(skb);
+ } else {
+ /* Everything else is handled by libfcoe */
+ __skb_pull(skb, ETH_HLEN);
+ fcoe_ctlr_recv(&qedf->ctlr, skb);
+ }
+}
+
+u8 *qedf_get_src_mac(struct fc_lport *lport)
+{
+ struct qedf_ctx *qedf = lport_priv(lport);
+
+ return qedf->data_src_addr;
+}
diff --git a/drivers/scsi/qedf/qedf_hsi.h b/drivers/scsi/qedf/qedf_hsi.h
new file mode 100644
index 000000000..ecd5cb53b
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_hsi.h
@@ -0,0 +1,351 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#ifndef __QEDF_HSI__
+#define __QEDF_HSI__
+/*
+ * Add include to common target
+ */
+#include <linux/qed/common_hsi.h>
+
+/*
+ * Add include to common storage target
+ */
+#include <linux/qed/storage_common.h>
+
+/*
+ * Add include to common fcoe target for both eCore and protocol driver
+ */
+#include <linux/qed/fcoe_common.h>
+
+
+/*
+ * FCoE CQ element ABTS information
+ */
+struct fcoe_abts_info {
+ u8 r_ctl /* R_CTL in the ABTS response frame */;
+ u8 reserved0;
+ __le16 rx_id;
+ __le32 reserved2[2];
+ __le32 fc_payload[3] /* ABTS FC payload response frame */;
+};
+
+
+/*
+ * FCoE class type
+ */
+enum fcoe_class_type {
+ FCOE_TASK_CLASS_TYPE_3,
+ FCOE_TASK_CLASS_TYPE_2,
+ MAX_FCOE_CLASS_TYPE
+};
+
+
+/*
+ * FCoE CMDQ element control information
+ */
+struct fcoe_cmdqe_control {
+ __le16 conn_id;
+ u8 num_additional_cmdqes;
+ u8 cmdType;
+ /* true for ABTS request cmdqe. used in Target mode */
+#define FCOE_CMDQE_CONTROL_ABTSREQCMD_MASK 0x1
+#define FCOE_CMDQE_CONTROL_ABTSREQCMD_SHIFT 0
+#define FCOE_CMDQE_CONTROL_RESERVED1_MASK 0x7F
+#define FCOE_CMDQE_CONTROL_RESERVED1_SHIFT 1
+ u8 reserved2[4];
+};
+
+/*
+ * FCoE control + payload CMDQ element
+ */
+struct fcoe_cmdqe {
+ struct fcoe_cmdqe_control hdr;
+ u8 fc_header[24];
+ __le32 fcp_cmd_payload[8];
+};
+
+
+
+/*
+ * FCP RSP flags
+ */
+struct fcoe_fcp_rsp_flags {
+ u8 flags;
+#define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID_MASK 0x1
+#define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID_SHIFT 0
+#define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID_MASK 0x1
+#define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID_SHIFT 1
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER_MASK 0x1
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER_SHIFT 2
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER_MASK 0x1
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER_SHIFT 3
+#define FCOE_FCP_RSP_FLAGS_FCP_CONF_REQ_MASK 0x1
+#define FCOE_FCP_RSP_FLAGS_FCP_CONF_REQ_SHIFT 4
+#define FCOE_FCP_RSP_FLAGS_FCP_BIDI_FLAGS_MASK 0x7
+#define FCOE_FCP_RSP_FLAGS_FCP_BIDI_FLAGS_SHIFT 5
+};
+
+/*
+ * FCoE CQ element response information
+ */
+struct fcoe_cqe_rsp_info {
+ struct fcoe_fcp_rsp_flags rsp_flags;
+ u8 scsi_status_code;
+ __le16 retry_delay_timer;
+ __le32 fcp_resid;
+ __le32 fcp_sns_len;
+ __le32 fcp_rsp_len;
+ __le16 rx_id;
+ u8 fw_error_flags;
+#define FCOE_CQE_RSP_INFO_FW_UNDERRUN_MASK 0x1 /* FW detected underrun */
+#define FCOE_CQE_RSP_INFO_FW_UNDERRUN_SHIFT 0
+#define FCOE_CQE_RSP_INFO_RESREVED_MASK 0x7F
+#define FCOE_CQE_RSP_INFO_RESREVED_SHIFT 1
+ u8 reserved;
+ __le32 fw_residual /* Residual bytes calculated by FW */;
+};
+
+/*
+ * FCoE CQ element Target completion information
+ */
+struct fcoe_cqe_target_info {
+ __le16 rx_id;
+ __le16 reserved0;
+ __le32 reserved1[5];
+};
+
+/*
+ * FCoE error/warning reporting entry
+ */
+struct fcoe_err_report_entry {
+ __le32 err_warn_bitmap_lo /* Error bitmap lower 32 bits */;
+ __le32 err_warn_bitmap_hi /* Error bitmap higher 32 bits */;
+ /* Buffer offset the beginning of the Sequence last transmitted */
+ __le32 tx_buf_off;
+ /* Buffer offset from the beginning of the Sequence last received */
+ __le32 rx_buf_off;
+ __le16 rx_id /* RX_ID of the associated task */;
+ __le16 reserved1;
+ __le32 reserved2;
+};
+
+/*
+ * FCoE CQ element middle path information
+ */
+struct fcoe_cqe_midpath_info {
+ __le32 data_placement_size;
+ __le16 rx_id;
+ __le16 reserved0;
+ __le32 reserved1[4];
+};
+
+/*
+ * FCoE CQ element unsolicited information
+ */
+struct fcoe_unsolic_info {
+ /* BD information: Physical address and opaque data */
+ struct scsi_bd bd_info;
+ __le16 conn_id /* Connection ID the frame is associated to */;
+ __le16 pkt_len /* Packet length */;
+ u8 reserved1[4];
+};
+
+/*
+ * FCoE warning reporting entry
+ */
+struct fcoe_warning_report_entry {
+ /* BD information: Physical address and opaque data */
+ struct scsi_bd bd_info;
+ /* Buffer offset the beginning of the Sequence last transmitted */
+ __le32 buf_off;
+ __le16 rx_id /* RX_ID of the associated task */;
+ __le16 reserved1;
+};
+
+/*
+ * FCoE CQ element information
+ */
+union fcoe_cqe_info {
+ struct fcoe_cqe_rsp_info rsp_info /* Response completion information */;
+ /* Target completion information */
+ struct fcoe_cqe_target_info target_info;
+ /* Error completion information */
+ struct fcoe_err_report_entry err_info;
+ struct fcoe_abts_info abts_info /* ABTS completion information */;
+ /* Middle path completion information */
+ struct fcoe_cqe_midpath_info midpath_info;
+ /* Unsolicited packet completion information */
+ struct fcoe_unsolic_info unsolic_info;
+ /* Warning completion information (Rec Tov expiration) */
+ struct fcoe_warning_report_entry warn_info;
+};
+
+/*
+ * FCoE CQ element
+ */
+struct fcoe_cqe {
+ __le32 cqe_data;
+ /* The task identifier (OX_ID) to be completed */
+#define FCOE_CQE_TASK_ID_MASK 0xFFFF
+#define FCOE_CQE_TASK_ID_SHIFT 0
+ /*
+ * The CQE type: 0x0 Indicating on a pending work request completion.
+ * 0x1 - Indicating on an unsolicited event notification. use enum
+ * fcoe_cqe_type (use enum fcoe_cqe_type)
+ */
+#define FCOE_CQE_CQE_TYPE_MASK 0xF
+#define FCOE_CQE_CQE_TYPE_SHIFT 16
+#define FCOE_CQE_RESERVED0_MASK 0xFFF
+#define FCOE_CQE_RESERVED0_SHIFT 20
+ __le16 reserved1;
+ __le16 fw_cq_prod;
+ union fcoe_cqe_info cqe_info;
+};
+
+/*
+ * FCoE CQE type
+ */
+enum fcoe_cqe_type {
+ /* solicited response on a R/W or middle-path SQE */
+ FCOE_GOOD_COMPLETION_CQE_TYPE,
+ FCOE_UNSOLIC_CQE_TYPE /* unsolicited packet, RQ consumed */,
+ FCOE_ERROR_DETECTION_CQE_TYPE /* timer expiration, validation error */,
+ FCOE_WARNING_CQE_TYPE /* rec_tov or rr_tov timer expiration */,
+ FCOE_EXCH_CLEANUP_CQE_TYPE /* task cleanup completed */,
+ FCOE_ABTS_CQE_TYPE /* ABTS received and task cleaned */,
+ FCOE_DUMMY_CQE_TYPE /* just increment SQ CONS */,
+ /* Task was completed wight after sending a pkt to the target */
+ FCOE_LOCAL_COMP_CQE_TYPE,
+ MAX_FCOE_CQE_TYPE
+};
+
+/*
+ * FCoE fast path error codes
+ */
+enum fcoe_fp_error_warning_code {
+ FCOE_ERROR_CODE_XFER_OOO_RO /* XFER error codes */,
+ FCOE_ERROR_CODE_XFER_RO_NOT_ALIGNED,
+ FCOE_ERROR_CODE_XFER_NULL_BURST_LEN,
+ FCOE_ERROR_CODE_XFER_RO_GREATER_THAN_DATA2TRNS,
+ FCOE_ERROR_CODE_XFER_INVALID_PAYLOAD_SIZE,
+ FCOE_ERROR_CODE_XFER_TASK_TYPE_NOT_WRITE,
+ FCOE_ERROR_CODE_XFER_PEND_XFER_SET,
+ FCOE_ERROR_CODE_XFER_OPENED_SEQ,
+ FCOE_ERROR_CODE_XFER_FCTL,
+ FCOE_ERROR_CODE_FCP_RSP_BIDI_FLAGS_SET /* FCP RSP error codes */,
+ FCOE_ERROR_CODE_FCP_RSP_INVALID_LENGTH_FIELD,
+ FCOE_ERROR_CODE_FCP_RSP_INVALID_SNS_FIELD,
+ FCOE_ERROR_CODE_FCP_RSP_INVALID_PAYLOAD_SIZE,
+ FCOE_ERROR_CODE_FCP_RSP_PEND_XFER_SET,
+ FCOE_ERROR_CODE_FCP_RSP_OPENED_SEQ,
+ FCOE_ERROR_CODE_FCP_RSP_FCTL,
+ FCOE_ERROR_CODE_FCP_RSP_LAST_SEQ_RESET,
+ FCOE_ERROR_CODE_FCP_RSP_CONF_REQ_NOT_SUPPORTED_YET,
+ FCOE_ERROR_CODE_DATA_OOO_RO /* FCP DATA error codes */,
+ FCOE_ERROR_CODE_DATA_EXCEEDS_DEFINED_MAX_FRAME_SIZE,
+ FCOE_ERROR_CODE_DATA_EXCEEDS_DATA2TRNS,
+ FCOE_ERROR_CODE_DATA_SOFI3_SEQ_ACTIVE_SET,
+ FCOE_ERROR_CODE_DATA_SOFN_SEQ_ACTIVE_RESET,
+ FCOE_ERROR_CODE_DATA_EOFN_END_SEQ_SET,
+ FCOE_ERROR_CODE_DATA_EOFT_END_SEQ_RESET,
+ FCOE_ERROR_CODE_DATA_TASK_TYPE_NOT_READ,
+ FCOE_ERROR_CODE_DATA_FCTL_INITIATIR,
+ FCOE_ERROR_CODE_MIDPATH_INVALID_TYPE /* Middle path error codes */,
+ FCOE_ERROR_CODE_MIDPATH_SOFI3_SEQ_ACTIVE_SET,
+ FCOE_ERROR_CODE_MIDPATH_SOFN_SEQ_ACTIVE_RESET,
+ FCOE_ERROR_CODE_MIDPATH_EOFN_END_SEQ_SET,
+ FCOE_ERROR_CODE_MIDPATH_EOFT_END_SEQ_RESET,
+ FCOE_ERROR_CODE_MIDPATH_REPLY_FCTL,
+ FCOE_ERROR_CODE_MIDPATH_INVALID_REPLY,
+ FCOE_ERROR_CODE_MIDPATH_ELS_REPLY_RCTL,
+ FCOE_ERROR_CODE_COMMON_MIDDLE_FRAME_WITH_PAD /* Common error codes */,
+ FCOE_ERROR_CODE_COMMON_SEQ_INIT_IN_TCE,
+ FCOE_ERROR_CODE_COMMON_FC_HDR_RX_ID_MISMATCH,
+ FCOE_ERROR_CODE_COMMON_INCORRECT_SEQ_CNT,
+ FCOE_ERROR_CODE_COMMON_DATA_FC_HDR_FCP_TYPE_MISMATCH,
+ FCOE_ERROR_CODE_COMMON_DATA_NO_MORE_SGES,
+ FCOE_ERROR_CODE_COMMON_OPTIONAL_FC_HDR,
+ FCOE_ERROR_CODE_COMMON_READ_TCE_OX_ID_TOO_BIG,
+ FCOE_ERROR_CODE_COMMON_DATA_WAS_NOT_TRANSMITTED,
+ FCOE_ERROR_CODE_COMMON_TASK_DDF_RCTL_INFO_FIELD,
+ FCOE_ERROR_CODE_COMMON_TASK_INVALID_RCTL,
+ FCOE_ERROR_CODE_COMMON_TASK_RCTL_GENERAL_MISMATCH,
+ FCOE_ERROR_CODE_E_D_TOV_TIMER_EXPIRATION /* Timer error codes */,
+ FCOE_WARNING_CODE_REC_TOV_TIMER_EXPIRATION /* Timer error codes */,
+ FCOE_ERROR_CODE_RR_TOV_TIMER_EXPIRATION /* Timer error codes */,
+ /* ABTSrsp pckt arrived unexpected */
+ FCOE_ERROR_CODE_ABTS_REPLY_UNEXPECTED,
+ FCOE_ERROR_CODE_TARGET_MODE_FCP_RSP,
+ FCOE_ERROR_CODE_TARGET_MODE_FCP_XFER,
+ FCOE_ERROR_CODE_TARGET_MODE_DATA_TASK_TYPE_NOT_WRITE,
+ FCOE_ERROR_CODE_DATA_FCTL_TARGET,
+ FCOE_ERROR_CODE_TARGET_DATA_SIZE_NO_MATCH_XFER,
+ FCOE_ERROR_CODE_TARGET_DIF_CRC_CHECKSUM_ERROR,
+ FCOE_ERROR_CODE_TARGET_DIF_REF_TAG_ERROR,
+ FCOE_ERROR_CODE_TARGET_DIF_APP_TAG_ERROR,
+ MAX_FCOE_FP_ERROR_WARNING_CODE
+};
+
+
+/*
+ * FCoE RESPQ element
+ */
+struct fcoe_respqe {
+ __le16 ox_id /* OX_ID that is located in the FCP_RSP FC header */;
+ __le16 rx_id /* RX_ID that is located in the FCP_RSP FC header */;
+ __le32 additional_info;
+/* PARAM that is located in the FCP_RSP FC header */
+#define FCOE_RESPQE_PARAM_MASK 0xFFFFFF
+#define FCOE_RESPQE_PARAM_SHIFT 0
+/* Indication whther its Target-auto-rsp mode or not */
+#define FCOE_RESPQE_TARGET_AUTO_RSP_MASK 0xFF
+#define FCOE_RESPQE_TARGET_AUTO_RSP_SHIFT 24
+};
+
+
+/*
+ * FCoE slow path error codes
+ */
+enum fcoe_sp_error_code {
+ /* Error codes for Error Reporting in slow path flows */
+ FCOE_ERROR_CODE_SLOW_PATH_TOO_MANY_FUNCS,
+ FCOE_ERROR_SLOW_PATH_CODE_NO_LICENSE,
+ MAX_FCOE_SP_ERROR_CODE
+};
+
+/*
+ * FCoE task TX state
+ */
+enum fcoe_task_tx_state {
+ /* Initiate state after driver has initialized the task */
+ FCOE_TASK_TX_STATE_NORMAL,
+ /* Updated by TX path after complete transmitting unsolicited packet */
+ FCOE_TASK_TX_STATE_UNSOLICITED_COMPLETED,
+ /*
+ * Updated by TX path after start processing the task requesting the
+ * cleanup/abort operation
+ */
+ FCOE_TASK_TX_STATE_CLEAN_REQ,
+ FCOE_TASK_TX_STATE_ABTS /* Updated by TX path during abort procedure */,
+ /* Updated by TX path during exchange cleanup procedure */
+ FCOE_TASK_TX_STATE_EXCLEANUP,
+ /*
+ * Updated by TX path during exchange cleanup continuation task
+ * procedure
+ */
+ FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_WRITE_CONT,
+ /* Updated by TX path during exchange cleanup first xfer procedure */
+ FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_WRITE,
+ /* Updated by TX path during exchange cleanup read task in Target */
+ FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_READ_OR_RSP,
+ /* Updated by TX path during target exchange cleanup procedure */
+ FCOE_TASK_TX_STATE_EXCLEANUP_TARGET_WRITE_LAST_CYCLE,
+ /* Updated by TX path during sequence recovery procedure */
+ FCOE_TASK_TX_STATE_SEQRECOVERY,
+ MAX_FCOE_TASK_TX_STATE
+};
+
+#endif /* __QEDF_HSI__ */
diff --git a/drivers/scsi/qedf/qedf_io.c b/drivers/scsi/qedf/qedf_io.c
new file mode 100644
index 000000000..10fe33838
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_io.c
@@ -0,0 +1,2630 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#include <linux/spinlock.h>
+#include <linux/vmalloc.h>
+#include "qedf.h"
+#include <scsi/scsi_tcq.h>
+
+void qedf_cmd_timer_set(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
+ unsigned int timer_msec)
+{
+ queue_delayed_work(qedf->timer_work_queue, &io_req->timeout_work,
+ msecs_to_jiffies(timer_msec));
+}
+
+static void qedf_cmd_timeout(struct work_struct *work)
+{
+
+ struct qedf_ioreq *io_req =
+ container_of(work, struct qedf_ioreq, timeout_work.work);
+ struct qedf_ctx *qedf;
+ struct qedf_rport *fcport;
+
+ fcport = io_req->fcport;
+ if (io_req->fcport == NULL) {
+ QEDF_INFO(NULL, QEDF_LOG_IO, "fcport is NULL.\n");
+ return;
+ }
+
+ qedf = fcport->qedf;
+
+ switch (io_req->cmd_type) {
+ case QEDF_ABTS:
+ if (qedf == NULL) {
+ QEDF_INFO(NULL, QEDF_LOG_IO,
+ "qedf is NULL for ABTS xid=0x%x.\n",
+ io_req->xid);
+ return;
+ }
+
+ QEDF_ERR((&qedf->dbg_ctx), "ABTS timeout, xid=0x%x.\n",
+ io_req->xid);
+ /* Cleanup timed out ABTS */
+ qedf_initiate_cleanup(io_req, true);
+ complete(&io_req->abts_done);
+
+ /*
+ * Need to call kref_put for reference taken when initiate_abts
+ * was called since abts_compl won't be called now that we've
+ * cleaned up the task.
+ */
+ kref_put(&io_req->refcount, qedf_release_cmd);
+
+ /* Clear in abort bit now that we're done with the command */
+ clear_bit(QEDF_CMD_IN_ABORT, &io_req->flags);
+
+ /*
+ * Now that the original I/O and the ABTS are complete see
+ * if we need to reconnect to the target.
+ */
+ qedf_restart_rport(fcport);
+ break;
+ case QEDF_ELS:
+ if (!qedf) {
+ QEDF_INFO(NULL, QEDF_LOG_IO,
+ "qedf is NULL for ELS xid=0x%x.\n",
+ io_req->xid);
+ return;
+ }
+ /* ELS request no longer outstanding since it timed out */
+ clear_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
+
+ kref_get(&io_req->refcount);
+ /*
+ * Don't attempt to clean an ELS timeout as any subseqeunt
+ * ABTS or cleanup requests just hang. For now just free
+ * the resources of the original I/O and the RRQ
+ */
+ QEDF_ERR(&(qedf->dbg_ctx), "ELS timeout, xid=0x%x.\n",
+ io_req->xid);
+ qedf_initiate_cleanup(io_req, true);
+ io_req->event = QEDF_IOREQ_EV_ELS_TMO;
+ /* Call callback function to complete command */
+ if (io_req->cb_func && io_req->cb_arg) {
+ io_req->cb_func(io_req->cb_arg);
+ io_req->cb_arg = NULL;
+ }
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ break;
+ case QEDF_SEQ_CLEANUP:
+ QEDF_ERR(&(qedf->dbg_ctx), "Sequence cleanup timeout, "
+ "xid=0x%x.\n", io_req->xid);
+ qedf_initiate_cleanup(io_req, true);
+ io_req->event = QEDF_IOREQ_EV_ELS_TMO;
+ qedf_process_seq_cleanup_compl(qedf, NULL, io_req);
+ break;
+ default:
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Hit default case, xid=0x%x.\n", io_req->xid);
+ break;
+ }
+}
+
+void qedf_cmd_mgr_free(struct qedf_cmd_mgr *cmgr)
+{
+ struct io_bdt *bdt_info;
+ struct qedf_ctx *qedf = cmgr->qedf;
+ size_t bd_tbl_sz;
+ u16 min_xid = 0;
+ u16 max_xid = (FCOE_PARAMS_NUM_TASKS - 1);
+ int num_ios;
+ int i;
+ struct qedf_ioreq *io_req;
+
+ num_ios = max_xid - min_xid + 1;
+
+ /* Free fcoe_bdt_ctx structures */
+ if (!cmgr->io_bdt_pool) {
+ QEDF_ERR(&qedf->dbg_ctx, "io_bdt_pool is NULL.\n");
+ goto free_cmd_pool;
+ }
+
+ bd_tbl_sz = QEDF_MAX_BDS_PER_CMD * sizeof(struct scsi_sge);
+ for (i = 0; i < num_ios; i++) {
+ bdt_info = cmgr->io_bdt_pool[i];
+ if (bdt_info->bd_tbl) {
+ dma_free_coherent(&qedf->pdev->dev, bd_tbl_sz,
+ bdt_info->bd_tbl, bdt_info->bd_tbl_dma);
+ bdt_info->bd_tbl = NULL;
+ }
+ }
+
+ /* Destroy io_bdt pool */
+ for (i = 0; i < num_ios; i++) {
+ kfree(cmgr->io_bdt_pool[i]);
+ cmgr->io_bdt_pool[i] = NULL;
+ }
+
+ kfree(cmgr->io_bdt_pool);
+ cmgr->io_bdt_pool = NULL;
+
+free_cmd_pool:
+
+ for (i = 0; i < num_ios; i++) {
+ io_req = &cmgr->cmds[i];
+ kfree(io_req->sgl_task_params);
+ kfree(io_req->task_params);
+ /* Make sure we free per command sense buffer */
+ if (io_req->sense_buffer)
+ dma_free_coherent(&qedf->pdev->dev,
+ QEDF_SCSI_SENSE_BUFFERSIZE, io_req->sense_buffer,
+ io_req->sense_buffer_dma);
+ cancel_delayed_work_sync(&io_req->rrq_work);
+ }
+
+ /* Free command manager itself */
+ vfree(cmgr);
+}
+
+static void qedf_handle_rrq(struct work_struct *work)
+{
+ struct qedf_ioreq *io_req =
+ container_of(work, struct qedf_ioreq, rrq_work.work);
+
+ atomic_set(&io_req->state, QEDFC_CMD_ST_RRQ_ACTIVE);
+ qedf_send_rrq(io_req);
+
+}
+
+struct qedf_cmd_mgr *qedf_cmd_mgr_alloc(struct qedf_ctx *qedf)
+{
+ struct qedf_cmd_mgr *cmgr;
+ struct io_bdt *bdt_info;
+ struct qedf_ioreq *io_req;
+ u16 xid;
+ int i;
+ int num_ios;
+ u16 min_xid = 0;
+ u16 max_xid = (FCOE_PARAMS_NUM_TASKS - 1);
+
+ /* Make sure num_queues is already set before calling this function */
+ if (!qedf->num_queues) {
+ QEDF_ERR(&(qedf->dbg_ctx), "num_queues is not set.\n");
+ return NULL;
+ }
+
+ if (max_xid <= min_xid || max_xid == FC_XID_UNKNOWN) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Invalid min_xid 0x%x and "
+ "max_xid 0x%x.\n", min_xid, max_xid);
+ return NULL;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "min xid 0x%x, max xid "
+ "0x%x.\n", min_xid, max_xid);
+
+ num_ios = max_xid - min_xid + 1;
+
+ cmgr = vzalloc(sizeof(struct qedf_cmd_mgr));
+ if (!cmgr) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Failed to alloc cmd mgr.\n");
+ return NULL;
+ }
+
+ cmgr->qedf = qedf;
+ spin_lock_init(&cmgr->lock);
+
+ /*
+ * Initialize I/O request fields.
+ */
+ xid = 0;
+
+ for (i = 0; i < num_ios; i++) {
+ io_req = &cmgr->cmds[i];
+ INIT_DELAYED_WORK(&io_req->timeout_work, qedf_cmd_timeout);
+
+ io_req->xid = xid++;
+
+ INIT_DELAYED_WORK(&io_req->rrq_work, qedf_handle_rrq);
+
+ /* Allocate DMA memory to hold sense buffer */
+ io_req->sense_buffer = dma_alloc_coherent(&qedf->pdev->dev,
+ QEDF_SCSI_SENSE_BUFFERSIZE, &io_req->sense_buffer_dma,
+ GFP_KERNEL);
+ if (!io_req->sense_buffer) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Failed to alloc sense buffer.\n");
+ goto mem_err;
+ }
+
+ /* Allocate task parameters to pass to f/w init funcions */
+ io_req->task_params = kzalloc(sizeof(*io_req->task_params),
+ GFP_KERNEL);
+ if (!io_req->task_params) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "Failed to allocate task_params for xid=0x%x\n",
+ i);
+ goto mem_err;
+ }
+
+ /*
+ * Allocate scatter/gather list info to pass to f/w init
+ * functions.
+ */
+ io_req->sgl_task_params = kzalloc(
+ sizeof(struct scsi_sgl_task_params), GFP_KERNEL);
+ if (!io_req->sgl_task_params) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "Failed to allocate sgl_task_params for xid=0x%x\n",
+ i);
+ goto mem_err;
+ }
+ }
+
+ /* Allocate pool of io_bdts - one for each qedf_ioreq */
+ cmgr->io_bdt_pool = kmalloc_array(num_ios, sizeof(struct io_bdt *),
+ GFP_KERNEL);
+
+ if (!cmgr->io_bdt_pool) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Failed to alloc io_bdt_pool.\n");
+ goto mem_err;
+ }
+
+ for (i = 0; i < num_ios; i++) {
+ cmgr->io_bdt_pool[i] = kmalloc(sizeof(struct io_bdt),
+ GFP_KERNEL);
+ if (!cmgr->io_bdt_pool[i]) {
+ QEDF_WARN(&(qedf->dbg_ctx),
+ "Failed to alloc io_bdt_pool[%d].\n", i);
+ goto mem_err;
+ }
+ }
+
+ for (i = 0; i < num_ios; i++) {
+ bdt_info = cmgr->io_bdt_pool[i];
+ bdt_info->bd_tbl = dma_alloc_coherent(&qedf->pdev->dev,
+ QEDF_MAX_BDS_PER_CMD * sizeof(struct scsi_sge),
+ &bdt_info->bd_tbl_dma, GFP_KERNEL);
+ if (!bdt_info->bd_tbl) {
+ QEDF_WARN(&(qedf->dbg_ctx),
+ "Failed to alloc bdt_tbl[%d].\n", i);
+ goto mem_err;
+ }
+ }
+ atomic_set(&cmgr->free_list_cnt, num_ios);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "cmgr->free_list_cnt=%d.\n",
+ atomic_read(&cmgr->free_list_cnt));
+
+ return cmgr;
+
+mem_err:
+ qedf_cmd_mgr_free(cmgr);
+ return NULL;
+}
+
+struct qedf_ioreq *qedf_alloc_cmd(struct qedf_rport *fcport, u8 cmd_type)
+{
+ struct qedf_ctx *qedf = fcport->qedf;
+ struct qedf_cmd_mgr *cmd_mgr = qedf->cmd_mgr;
+ struct qedf_ioreq *io_req = NULL;
+ struct io_bdt *bd_tbl;
+ u16 xid;
+ uint32_t free_sqes;
+ int i;
+ unsigned long flags;
+
+ free_sqes = atomic_read(&fcport->free_sqes);
+
+ if (!free_sqes) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Returning NULL, free_sqes=%d.\n ",
+ free_sqes);
+ goto out_failed;
+ }
+
+ /* Limit the number of outstanding R/W tasks */
+ if ((atomic_read(&fcport->num_active_ios) >=
+ NUM_RW_TASKS_PER_CONNECTION)) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Returning NULL, num_active_ios=%d.\n",
+ atomic_read(&fcport->num_active_ios));
+ goto out_failed;
+ }
+
+ /* Limit global TIDs certain tasks */
+ if (atomic_read(&cmd_mgr->free_list_cnt) <= GBL_RSVD_TASKS) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Returning NULL, free_list_cnt=%d.\n",
+ atomic_read(&cmd_mgr->free_list_cnt));
+ goto out_failed;
+ }
+
+ spin_lock_irqsave(&cmd_mgr->lock, flags);
+ for (i = 0; i < FCOE_PARAMS_NUM_TASKS; i++) {
+ io_req = &cmd_mgr->cmds[cmd_mgr->idx];
+ cmd_mgr->idx++;
+ if (cmd_mgr->idx == FCOE_PARAMS_NUM_TASKS)
+ cmd_mgr->idx = 0;
+
+ /* Check to make sure command was previously freed */
+ if (!io_req->alloc)
+ break;
+ }
+
+ if (i == FCOE_PARAMS_NUM_TASKS) {
+ spin_unlock_irqrestore(&cmd_mgr->lock, flags);
+ goto out_failed;
+ }
+
+ if (test_bit(QEDF_CMD_DIRTY, &io_req->flags))
+ QEDF_ERR(&qedf->dbg_ctx,
+ "io_req found to be dirty ox_id = 0x%x.\n",
+ io_req->xid);
+
+ /* Clear any flags now that we've reallocated the xid */
+ io_req->flags = 0;
+ io_req->alloc = 1;
+ spin_unlock_irqrestore(&cmd_mgr->lock, flags);
+
+ atomic_inc(&fcport->num_active_ios);
+ atomic_dec(&fcport->free_sqes);
+ xid = io_req->xid;
+ atomic_dec(&cmd_mgr->free_list_cnt);
+
+ io_req->cmd_mgr = cmd_mgr;
+ io_req->fcport = fcport;
+
+ /* Clear any stale sc_cmd back pointer */
+ io_req->sc_cmd = NULL;
+ io_req->lun = -1;
+
+ /* Hold the io_req against deletion */
+ kref_init(&io_req->refcount); /* ID: 001 */
+ atomic_set(&io_req->state, QEDFC_CMD_ST_IO_ACTIVE);
+
+ /* Bind io_bdt for this io_req */
+ /* Have a static link between io_req and io_bdt_pool */
+ bd_tbl = io_req->bd_tbl = cmd_mgr->io_bdt_pool[xid];
+ if (bd_tbl == NULL) {
+ QEDF_ERR(&(qedf->dbg_ctx), "bd_tbl is NULL, xid=%x.\n", xid);
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ goto out_failed;
+ }
+ bd_tbl->io_req = io_req;
+ io_req->cmd_type = cmd_type;
+ io_req->tm_flags = 0;
+
+ /* Reset sequence offset data */
+ io_req->rx_buf_off = 0;
+ io_req->tx_buf_off = 0;
+ io_req->rx_id = 0xffff; /* No OX_ID */
+
+ return io_req;
+
+out_failed:
+ /* Record failure for stats and return NULL to caller */
+ qedf->alloc_failures++;
+ return NULL;
+}
+
+static void qedf_free_mp_resc(struct qedf_ioreq *io_req)
+{
+ struct qedf_mp_req *mp_req = &(io_req->mp_req);
+ struct qedf_ctx *qedf = io_req->fcport->qedf;
+ uint64_t sz = sizeof(struct scsi_sge);
+
+ /* clear tm flags */
+ if (mp_req->mp_req_bd) {
+ dma_free_coherent(&qedf->pdev->dev, sz,
+ mp_req->mp_req_bd, mp_req->mp_req_bd_dma);
+ mp_req->mp_req_bd = NULL;
+ }
+ if (mp_req->mp_resp_bd) {
+ dma_free_coherent(&qedf->pdev->dev, sz,
+ mp_req->mp_resp_bd, mp_req->mp_resp_bd_dma);
+ mp_req->mp_resp_bd = NULL;
+ }
+ if (mp_req->req_buf) {
+ dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
+ mp_req->req_buf, mp_req->req_buf_dma);
+ mp_req->req_buf = NULL;
+ }
+ if (mp_req->resp_buf) {
+ dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
+ mp_req->resp_buf, mp_req->resp_buf_dma);
+ mp_req->resp_buf = NULL;
+ }
+}
+
+void qedf_release_cmd(struct kref *ref)
+{
+ struct qedf_ioreq *io_req =
+ container_of(ref, struct qedf_ioreq, refcount);
+ struct qedf_cmd_mgr *cmd_mgr = io_req->cmd_mgr;
+ struct qedf_rport *fcport = io_req->fcport;
+ unsigned long flags;
+
+ if (io_req->cmd_type == QEDF_SCSI_CMD) {
+ QEDF_WARN(&fcport->qedf->dbg_ctx,
+ "Cmd released called without scsi_done called, io_req %p xid=0x%x.\n",
+ io_req, io_req->xid);
+ WARN_ON(io_req->sc_cmd);
+ }
+
+ if (io_req->cmd_type == QEDF_ELS ||
+ io_req->cmd_type == QEDF_TASK_MGMT_CMD)
+ qedf_free_mp_resc(io_req);
+
+ atomic_inc(&cmd_mgr->free_list_cnt);
+ atomic_dec(&fcport->num_active_ios);
+ atomic_set(&io_req->state, QEDF_CMD_ST_INACTIVE);
+ if (atomic_read(&fcport->num_active_ios) < 0) {
+ QEDF_WARN(&(fcport->qedf->dbg_ctx), "active_ios < 0.\n");
+ WARN_ON(1);
+ }
+
+ /* Increment task retry identifier now that the request is released */
+ io_req->task_retry_identifier++;
+ io_req->fcport = NULL;
+
+ clear_bit(QEDF_CMD_DIRTY, &io_req->flags);
+ io_req->cpu = 0;
+ spin_lock_irqsave(&cmd_mgr->lock, flags);
+ io_req->fcport = NULL;
+ io_req->alloc = 0;
+ spin_unlock_irqrestore(&cmd_mgr->lock, flags);
+}
+
+static int qedf_map_sg(struct qedf_ioreq *io_req)
+{
+ struct scsi_cmnd *sc = io_req->sc_cmd;
+ struct Scsi_Host *host = sc->device->host;
+ struct fc_lport *lport = shost_priv(host);
+ struct qedf_ctx *qedf = lport_priv(lport);
+ struct scsi_sge *bd = io_req->bd_tbl->bd_tbl;
+ struct scatterlist *sg;
+ int byte_count = 0;
+ int sg_count = 0;
+ int bd_count = 0;
+ u32 sg_len;
+ u64 addr;
+ int i = 0;
+
+ sg_count = dma_map_sg(&qedf->pdev->dev, scsi_sglist(sc),
+ scsi_sg_count(sc), sc->sc_data_direction);
+ sg = scsi_sglist(sc);
+
+ io_req->sge_type = QEDF_IOREQ_UNKNOWN_SGE;
+
+ if (sg_count <= 8 || io_req->io_req_flags == QEDF_READ)
+ io_req->sge_type = QEDF_IOREQ_FAST_SGE;
+
+ scsi_for_each_sg(sc, sg, sg_count, i) {
+ sg_len = (u32)sg_dma_len(sg);
+ addr = (u64)sg_dma_address(sg);
+
+ /*
+ * Intermediate s/g element so check if start address
+ * is page aligned. Only required for writes and only if the
+ * number of scatter/gather elements is 8 or more.
+ */
+ if (io_req->sge_type == QEDF_IOREQ_UNKNOWN_SGE && (i) &&
+ (i != (sg_count - 1)) && sg_len < QEDF_PAGE_SIZE)
+ io_req->sge_type = QEDF_IOREQ_SLOW_SGE;
+
+ bd[bd_count].sge_addr.lo = cpu_to_le32(U64_LO(addr));
+ bd[bd_count].sge_addr.hi = cpu_to_le32(U64_HI(addr));
+ bd[bd_count].sge_len = cpu_to_le32(sg_len);
+
+ bd_count++;
+ byte_count += sg_len;
+ }
+
+ /* To catch a case where FAST and SLOW nothing is set, set FAST */
+ if (io_req->sge_type == QEDF_IOREQ_UNKNOWN_SGE)
+ io_req->sge_type = QEDF_IOREQ_FAST_SGE;
+
+ if (byte_count != scsi_bufflen(sc))
+ QEDF_ERR(&(qedf->dbg_ctx), "byte_count = %d != "
+ "scsi_bufflen = %d, task_id = 0x%x.\n", byte_count,
+ scsi_bufflen(sc), io_req->xid);
+
+ return bd_count;
+}
+
+static int qedf_build_bd_list_from_sg(struct qedf_ioreq *io_req)
+{
+ struct scsi_cmnd *sc = io_req->sc_cmd;
+ struct scsi_sge *bd = io_req->bd_tbl->bd_tbl;
+ int bd_count;
+
+ if (scsi_sg_count(sc)) {
+ bd_count = qedf_map_sg(io_req);
+ if (bd_count == 0)
+ return -ENOMEM;
+ } else {
+ bd_count = 0;
+ bd[0].sge_addr.lo = bd[0].sge_addr.hi = 0;
+ bd[0].sge_len = 0;
+ }
+ io_req->bd_tbl->bd_valid = bd_count;
+
+ return 0;
+}
+
+static void qedf_build_fcp_cmnd(struct qedf_ioreq *io_req,
+ struct fcp_cmnd *fcp_cmnd)
+{
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+
+ /* fcp_cmnd is 32 bytes */
+ memset(fcp_cmnd, 0, FCP_CMND_LEN);
+
+ /* 8 bytes: SCSI LUN info */
+ int_to_scsilun(sc_cmd->device->lun,
+ (struct scsi_lun *)&fcp_cmnd->fc_lun);
+
+ /* 4 bytes: flag info */
+ fcp_cmnd->fc_pri_ta = 0;
+ fcp_cmnd->fc_tm_flags = io_req->tm_flags;
+ fcp_cmnd->fc_flags = io_req->io_req_flags;
+ fcp_cmnd->fc_cmdref = 0;
+
+ /* Populate data direction */
+ if (io_req->cmd_type == QEDF_TASK_MGMT_CMD) {
+ fcp_cmnd->fc_flags |= FCP_CFL_RDDATA;
+ } else {
+ if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
+ fcp_cmnd->fc_flags |= FCP_CFL_WRDATA;
+ else if (sc_cmd->sc_data_direction == DMA_FROM_DEVICE)
+ fcp_cmnd->fc_flags |= FCP_CFL_RDDATA;
+ }
+
+ fcp_cmnd->fc_pri_ta = FCP_PTA_SIMPLE;
+
+ /* 16 bytes: CDB information */
+ if (io_req->cmd_type != QEDF_TASK_MGMT_CMD)
+ memcpy(fcp_cmnd->fc_cdb, sc_cmd->cmnd, sc_cmd->cmd_len);
+
+ /* 4 bytes: FCP data length */
+ fcp_cmnd->fc_dl = htonl(io_req->data_xfer_len);
+}
+
+static void qedf_init_task(struct qedf_rport *fcport, struct fc_lport *lport,
+ struct qedf_ioreq *io_req, struct fcoe_task_context *task_ctx,
+ struct fcoe_wqe *sqe)
+{
+ enum fcoe_task_type task_type;
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ struct io_bdt *bd_tbl = io_req->bd_tbl;
+ u8 fcp_cmnd[32];
+ u32 tmp_fcp_cmnd[8];
+ int bd_count = 0;
+ struct qedf_ctx *qedf = fcport->qedf;
+ uint16_t cq_idx = smp_processor_id() % qedf->num_queues;
+ struct regpair sense_data_buffer_phys_addr;
+ u32 tx_io_size = 0;
+ u32 rx_io_size = 0;
+ int i, cnt;
+
+ /* Note init_initiator_rw_fcoe_task memsets the task context */
+ io_req->task = task_ctx;
+ memset(task_ctx, 0, sizeof(struct fcoe_task_context));
+ memset(io_req->task_params, 0, sizeof(struct fcoe_task_params));
+ memset(io_req->sgl_task_params, 0, sizeof(struct scsi_sgl_task_params));
+
+ /* Set task type bassed on DMA directio of command */
+ if (io_req->cmd_type == QEDF_TASK_MGMT_CMD) {
+ task_type = FCOE_TASK_TYPE_READ_INITIATOR;
+ } else {
+ if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) {
+ task_type = FCOE_TASK_TYPE_WRITE_INITIATOR;
+ tx_io_size = io_req->data_xfer_len;
+ } else {
+ task_type = FCOE_TASK_TYPE_READ_INITIATOR;
+ rx_io_size = io_req->data_xfer_len;
+ }
+ }
+
+ /* Setup the fields for fcoe_task_params */
+ io_req->task_params->context = task_ctx;
+ io_req->task_params->sqe = sqe;
+ io_req->task_params->task_type = task_type;
+ io_req->task_params->tx_io_size = tx_io_size;
+ io_req->task_params->rx_io_size = rx_io_size;
+ io_req->task_params->conn_cid = fcport->fw_cid;
+ io_req->task_params->itid = io_req->xid;
+ io_req->task_params->cq_rss_number = cq_idx;
+ io_req->task_params->is_tape_device = fcport->dev_type;
+
+ /* Fill in information for scatter/gather list */
+ if (io_req->cmd_type != QEDF_TASK_MGMT_CMD) {
+ bd_count = bd_tbl->bd_valid;
+ io_req->sgl_task_params->sgl = bd_tbl->bd_tbl;
+ io_req->sgl_task_params->sgl_phys_addr.lo =
+ U64_LO(bd_tbl->bd_tbl_dma);
+ io_req->sgl_task_params->sgl_phys_addr.hi =
+ U64_HI(bd_tbl->bd_tbl_dma);
+ io_req->sgl_task_params->num_sges = bd_count;
+ io_req->sgl_task_params->total_buffer_size =
+ scsi_bufflen(io_req->sc_cmd);
+ if (io_req->sge_type == QEDF_IOREQ_SLOW_SGE)
+ io_req->sgl_task_params->small_mid_sge = 1;
+ else
+ io_req->sgl_task_params->small_mid_sge = 0;
+ }
+
+ /* Fill in physical address of sense buffer */
+ sense_data_buffer_phys_addr.lo = U64_LO(io_req->sense_buffer_dma);
+ sense_data_buffer_phys_addr.hi = U64_HI(io_req->sense_buffer_dma);
+
+ /* fill FCP_CMND IU */
+ qedf_build_fcp_cmnd(io_req, (struct fcp_cmnd *)tmp_fcp_cmnd);
+
+ /* Swap fcp_cmnd since FC is big endian */
+ cnt = sizeof(struct fcp_cmnd) / sizeof(u32);
+ for (i = 0; i < cnt; i++) {
+ tmp_fcp_cmnd[i] = cpu_to_be32(tmp_fcp_cmnd[i]);
+ }
+ memcpy(fcp_cmnd, tmp_fcp_cmnd, sizeof(struct fcp_cmnd));
+
+ init_initiator_rw_fcoe_task(io_req->task_params,
+ io_req->sgl_task_params,
+ sense_data_buffer_phys_addr,
+ io_req->task_retry_identifier, fcp_cmnd);
+
+ /* Increment SGL type counters */
+ if (io_req->sge_type == QEDF_IOREQ_SLOW_SGE)
+ qedf->slow_sge_ios++;
+ else
+ qedf->fast_sge_ios++;
+}
+
+void qedf_init_mp_task(struct qedf_ioreq *io_req,
+ struct fcoe_task_context *task_ctx, struct fcoe_wqe *sqe)
+{
+ struct qedf_mp_req *mp_req = &(io_req->mp_req);
+ struct qedf_rport *fcport = io_req->fcport;
+ struct qedf_ctx *qedf = io_req->fcport->qedf;
+ struct fc_frame_header *fc_hdr;
+ struct fcoe_tx_mid_path_params task_fc_hdr;
+ struct scsi_sgl_task_params tx_sgl_task_params;
+ struct scsi_sgl_task_params rx_sgl_task_params;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Initializing MP task for cmd_type=%d\n",
+ io_req->cmd_type);
+
+ qedf->control_requests++;
+
+ memset(&tx_sgl_task_params, 0, sizeof(struct scsi_sgl_task_params));
+ memset(&rx_sgl_task_params, 0, sizeof(struct scsi_sgl_task_params));
+ memset(task_ctx, 0, sizeof(struct fcoe_task_context));
+ memset(&task_fc_hdr, 0, sizeof(struct fcoe_tx_mid_path_params));
+
+ /* Setup the task from io_req for easy reference */
+ io_req->task = task_ctx;
+
+ /* Setup the fields for fcoe_task_params */
+ io_req->task_params->context = task_ctx;
+ io_req->task_params->sqe = sqe;
+ io_req->task_params->task_type = FCOE_TASK_TYPE_MIDPATH;
+ io_req->task_params->tx_io_size = io_req->data_xfer_len;
+ /* rx_io_size tells the f/w how large a response buffer we have */
+ io_req->task_params->rx_io_size = PAGE_SIZE;
+ io_req->task_params->conn_cid = fcport->fw_cid;
+ io_req->task_params->itid = io_req->xid;
+ /* Return middle path commands on CQ 0 */
+ io_req->task_params->cq_rss_number = 0;
+ io_req->task_params->is_tape_device = fcport->dev_type;
+
+ fc_hdr = &(mp_req->req_fc_hdr);
+ /* Set OX_ID and RX_ID based on driver task id */
+ fc_hdr->fh_ox_id = io_req->xid;
+ fc_hdr->fh_rx_id = htons(0xffff);
+
+ /* Set up FC header information */
+ task_fc_hdr.parameter = fc_hdr->fh_parm_offset;
+ task_fc_hdr.r_ctl = fc_hdr->fh_r_ctl;
+ task_fc_hdr.type = fc_hdr->fh_type;
+ task_fc_hdr.cs_ctl = fc_hdr->fh_cs_ctl;
+ task_fc_hdr.df_ctl = fc_hdr->fh_df_ctl;
+ task_fc_hdr.rx_id = fc_hdr->fh_rx_id;
+ task_fc_hdr.ox_id = fc_hdr->fh_ox_id;
+
+ /* Set up s/g list parameters for request buffer */
+ tx_sgl_task_params.sgl = mp_req->mp_req_bd;
+ tx_sgl_task_params.sgl_phys_addr.lo = U64_LO(mp_req->mp_req_bd_dma);
+ tx_sgl_task_params.sgl_phys_addr.hi = U64_HI(mp_req->mp_req_bd_dma);
+ tx_sgl_task_params.num_sges = 1;
+ /* Set PAGE_SIZE for now since sg element is that size ??? */
+ tx_sgl_task_params.total_buffer_size = io_req->data_xfer_len;
+ tx_sgl_task_params.small_mid_sge = 0;
+
+ /* Set up s/g list parameters for request buffer */
+ rx_sgl_task_params.sgl = mp_req->mp_resp_bd;
+ rx_sgl_task_params.sgl_phys_addr.lo = U64_LO(mp_req->mp_resp_bd_dma);
+ rx_sgl_task_params.sgl_phys_addr.hi = U64_HI(mp_req->mp_resp_bd_dma);
+ rx_sgl_task_params.num_sges = 1;
+ /* Set PAGE_SIZE for now since sg element is that size ??? */
+ rx_sgl_task_params.total_buffer_size = PAGE_SIZE;
+ rx_sgl_task_params.small_mid_sge = 0;
+
+
+ /*
+ * Last arg is 0 as previous code did not set that we wanted the
+ * fc header information.
+ */
+ init_initiator_midpath_unsolicited_fcoe_task(io_req->task_params,
+ &task_fc_hdr,
+ &tx_sgl_task_params,
+ &rx_sgl_task_params, 0);
+}
+
+/* Presumed that fcport->rport_lock is held */
+u16 qedf_get_sqe_idx(struct qedf_rport *fcport)
+{
+ uint16_t total_sqe = (fcport->sq_mem_size)/(sizeof(struct fcoe_wqe));
+ u16 rval;
+
+ rval = fcport->sq_prod_idx;
+
+ /* Adjust ring index */
+ fcport->sq_prod_idx++;
+ fcport->fw_sq_prod_idx++;
+ if (fcport->sq_prod_idx == total_sqe)
+ fcport->sq_prod_idx = 0;
+
+ return rval;
+}
+
+void qedf_ring_doorbell(struct qedf_rport *fcport)
+{
+ struct fcoe_db_data dbell = { 0 };
+
+ dbell.agg_flags = 0;
+
+ dbell.params |= DB_DEST_XCM << FCOE_DB_DATA_DEST_SHIFT;
+ dbell.params |= DB_AGG_CMD_SET << FCOE_DB_DATA_AGG_CMD_SHIFT;
+ dbell.params |= DQ_XCM_FCOE_SQ_PROD_CMD <<
+ FCOE_DB_DATA_AGG_VAL_SEL_SHIFT;
+
+ dbell.sq_prod = fcport->fw_sq_prod_idx;
+ /* wmb makes sure that the BDs data is updated before updating the
+ * producer, otherwise FW may read old data from the BDs.
+ */
+ wmb();
+ barrier();
+ writel(*(u32 *)&dbell, fcport->p_doorbell);
+ /*
+ * Fence required to flush the write combined buffer, since another
+ * CPU may write to the same doorbell address and data may be lost
+ * due to relaxed order nature of write combined bar.
+ */
+ wmb();
+}
+
+static void qedf_trace_io(struct qedf_rport *fcport, struct qedf_ioreq *io_req,
+ int8_t direction)
+{
+ struct qedf_ctx *qedf = fcport->qedf;
+ struct qedf_io_log *io_log;
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ unsigned long flags;
+
+ spin_lock_irqsave(&qedf->io_trace_lock, flags);
+
+ io_log = &qedf->io_trace_buf[qedf->io_trace_idx];
+ io_log->direction = direction;
+ io_log->task_id = io_req->xid;
+ io_log->port_id = fcport->rdata->ids.port_id;
+ io_log->lun = sc_cmd->device->lun;
+ io_log->op = sc_cmd->cmnd[0];
+ io_log->lba[0] = sc_cmd->cmnd[2];
+ io_log->lba[1] = sc_cmd->cmnd[3];
+ io_log->lba[2] = sc_cmd->cmnd[4];
+ io_log->lba[3] = sc_cmd->cmnd[5];
+ io_log->bufflen = scsi_bufflen(sc_cmd);
+ io_log->sg_count = scsi_sg_count(sc_cmd);
+ io_log->result = sc_cmd->result;
+ io_log->jiffies = jiffies;
+ io_log->refcount = kref_read(&io_req->refcount);
+
+ if (direction == QEDF_IO_TRACE_REQ) {
+ /* For requests we only care abot the submission CPU */
+ io_log->req_cpu = io_req->cpu;
+ io_log->int_cpu = 0;
+ io_log->rsp_cpu = 0;
+ } else if (direction == QEDF_IO_TRACE_RSP) {
+ io_log->req_cpu = io_req->cpu;
+ io_log->int_cpu = io_req->int_cpu;
+ io_log->rsp_cpu = smp_processor_id();
+ }
+
+ io_log->sge_type = io_req->sge_type;
+
+ qedf->io_trace_idx++;
+ if (qedf->io_trace_idx == QEDF_IO_TRACE_SIZE)
+ qedf->io_trace_idx = 0;
+
+ spin_unlock_irqrestore(&qedf->io_trace_lock, flags);
+}
+
+int qedf_post_io_req(struct qedf_rport *fcport, struct qedf_ioreq *io_req)
+{
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ struct Scsi_Host *host = sc_cmd->device->host;
+ struct fc_lport *lport = shost_priv(host);
+ struct qedf_ctx *qedf = lport_priv(lport);
+ struct fcoe_task_context *task_ctx;
+ u16 xid;
+ struct fcoe_wqe *sqe;
+ u16 sqe_idx;
+
+ /* Initialize rest of io_req fileds */
+ io_req->data_xfer_len = scsi_bufflen(sc_cmd);
+ qedf_priv(sc_cmd)->io_req = io_req;
+ io_req->sge_type = QEDF_IOREQ_FAST_SGE; /* Assume fast SGL by default */
+
+ /* Record which cpu this request is associated with */
+ io_req->cpu = smp_processor_id();
+
+ if (sc_cmd->sc_data_direction == DMA_FROM_DEVICE) {
+ io_req->io_req_flags = QEDF_READ;
+ qedf->input_requests++;
+ } else if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) {
+ io_req->io_req_flags = QEDF_WRITE;
+ qedf->output_requests++;
+ } else {
+ io_req->io_req_flags = 0;
+ qedf->control_requests++;
+ }
+
+ xid = io_req->xid;
+
+ /* Build buffer descriptor list for firmware from sg list */
+ if (qedf_build_bd_list_from_sg(io_req)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "BD list creation failed.\n");
+ /* Release cmd will release io_req, but sc_cmd is assigned */
+ io_req->sc_cmd = NULL;
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ return -EAGAIN;
+ }
+
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) ||
+ test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
+ /* Release cmd will release io_req, but sc_cmd is assigned */
+ io_req->sc_cmd = NULL;
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ return -EINVAL;
+ }
+
+ /* Record LUN number for later use if we need them */
+ io_req->lun = (int)sc_cmd->device->lun;
+
+ /* Obtain free SQE */
+ sqe_idx = qedf_get_sqe_idx(fcport);
+ sqe = &fcport->sq[sqe_idx];
+ memset(sqe, 0, sizeof(struct fcoe_wqe));
+
+ /* Get the task context */
+ task_ctx = qedf_get_task_mem(&qedf->tasks, xid);
+ if (!task_ctx) {
+ QEDF_WARN(&(qedf->dbg_ctx), "task_ctx is NULL, xid=%d.\n",
+ xid);
+ /* Release cmd will release io_req, but sc_cmd is assigned */
+ io_req->sc_cmd = NULL;
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ return -EINVAL;
+ }
+
+ qedf_init_task(fcport, lport, io_req, task_ctx, sqe);
+
+ /* Ring doorbell */
+ qedf_ring_doorbell(fcport);
+
+ /* Set that command is with the firmware now */
+ set_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
+
+ if (qedf_io_tracing && io_req->sc_cmd)
+ qedf_trace_io(fcport, io_req, QEDF_IO_TRACE_REQ);
+
+ return false;
+}
+
+int
+qedf_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd)
+{
+ struct fc_lport *lport = shost_priv(host);
+ struct qedf_ctx *qedf = lport_priv(lport);
+ struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
+ struct fc_rport_libfc_priv *rp = rport->dd_data;
+ struct qedf_rport *fcport;
+ struct qedf_ioreq *io_req;
+ int rc = 0;
+ int rval;
+ unsigned long flags = 0;
+ int num_sgs = 0;
+
+ num_sgs = scsi_sg_count(sc_cmd);
+ if (scsi_sg_count(sc_cmd) > QEDF_MAX_BDS_PER_CMD) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Number of SG elements %d exceeds what hardware limitation of %d.\n",
+ num_sgs, QEDF_MAX_BDS_PER_CMD);
+ sc_cmd->result = DID_ERROR;
+ scsi_done(sc_cmd);
+ return 0;
+ }
+
+ if (test_bit(QEDF_UNLOADING, &qedf->flags) ||
+ test_bit(QEDF_DBG_STOP_IO, &qedf->flags)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Returning DNC as unloading or stop io, flags 0x%lx.\n",
+ qedf->flags);
+ sc_cmd->result = DID_NO_CONNECT << 16;
+ scsi_done(sc_cmd);
+ return 0;
+ }
+
+ if (!qedf->pdev->msix_enabled) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Completing sc_cmd=%p DID_NO_CONNECT as MSI-X is not enabled.\n",
+ sc_cmd);
+ sc_cmd->result = DID_NO_CONNECT << 16;
+ scsi_done(sc_cmd);
+ return 0;
+ }
+
+ rval = fc_remote_port_chkready(rport);
+ if (rval) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "fc_remote_port_chkready failed=0x%x for port_id=0x%06x.\n",
+ rval, rport->port_id);
+ sc_cmd->result = rval;
+ scsi_done(sc_cmd);
+ return 0;
+ }
+
+ /* Retry command if we are doing a qed drain operation */
+ if (test_bit(QEDF_DRAIN_ACTIVE, &qedf->flags)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO, "Drain active.\n");
+ rc = SCSI_MLQUEUE_HOST_BUSY;
+ goto exit_qcmd;
+ }
+
+ if (lport->state != LPORT_ST_READY ||
+ atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO, "Link down.\n");
+ rc = SCSI_MLQUEUE_HOST_BUSY;
+ goto exit_qcmd;
+ }
+
+ /* rport and tgt are allocated together, so tgt should be non-NULL */
+ fcport = (struct qedf_rport *)&rp[1];
+
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) ||
+ test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
+ /*
+ * Session is not offloaded yet. Let SCSI-ml retry
+ * the command.
+ */
+ rc = SCSI_MLQUEUE_TARGET_BUSY;
+ goto exit_qcmd;
+ }
+
+ atomic_inc(&fcport->ios_to_queue);
+
+ if (fcport->retry_delay_timestamp) {
+ /* Take fcport->rport_lock for resetting the delay_timestamp */
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+ if (time_after(jiffies, fcport->retry_delay_timestamp)) {
+ fcport->retry_delay_timestamp = 0;
+ } else {
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+ /* If retry_delay timer is active, flow off the ML */
+ rc = SCSI_MLQUEUE_TARGET_BUSY;
+ atomic_dec(&fcport->ios_to_queue);
+ goto exit_qcmd;
+ }
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+ }
+
+ io_req = qedf_alloc_cmd(fcport, QEDF_SCSI_CMD);
+ if (!io_req) {
+ rc = SCSI_MLQUEUE_HOST_BUSY;
+ atomic_dec(&fcport->ios_to_queue);
+ goto exit_qcmd;
+ }
+
+ io_req->sc_cmd = sc_cmd;
+
+ /* Take fcport->rport_lock for posting to fcport send queue */
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+ if (qedf_post_io_req(fcport, io_req)) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Unable to post io_req\n");
+ /* Return SQE to pool */
+ atomic_inc(&fcport->free_sqes);
+ rc = SCSI_MLQUEUE_HOST_BUSY;
+ }
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+ atomic_dec(&fcport->ios_to_queue);
+
+exit_qcmd:
+ return rc;
+}
+
+static void qedf_parse_fcp_rsp(struct qedf_ioreq *io_req,
+ struct fcoe_cqe_rsp_info *fcp_rsp)
+{
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ struct qedf_ctx *qedf = io_req->fcport->qedf;
+ u8 rsp_flags = fcp_rsp->rsp_flags.flags;
+ int fcp_sns_len = 0;
+ int fcp_rsp_len = 0;
+ uint8_t *rsp_info, *sense_data;
+
+ io_req->fcp_status = FC_GOOD;
+ io_req->fcp_resid = 0;
+ if (rsp_flags & (FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER |
+ FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER))
+ io_req->fcp_resid = fcp_rsp->fcp_resid;
+
+ io_req->scsi_comp_flags = rsp_flags;
+ io_req->cdb_status = fcp_rsp->scsi_status_code;
+
+ if (rsp_flags &
+ FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID)
+ fcp_rsp_len = fcp_rsp->fcp_rsp_len;
+
+ if (rsp_flags &
+ FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID)
+ fcp_sns_len = fcp_rsp->fcp_sns_len;
+
+ io_req->fcp_rsp_len = fcp_rsp_len;
+ io_req->fcp_sns_len = fcp_sns_len;
+ rsp_info = sense_data = io_req->sense_buffer;
+
+ /* fetch fcp_rsp_code */
+ if ((fcp_rsp_len == 4) || (fcp_rsp_len == 8)) {
+ /* Only for task management function */
+ io_req->fcp_rsp_code = rsp_info[3];
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "fcp_rsp_code = %d\n", io_req->fcp_rsp_code);
+ /* Adjust sense-data location. */
+ sense_data += fcp_rsp_len;
+ }
+
+ if (fcp_sns_len > SCSI_SENSE_BUFFERSIZE) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Truncating sense buffer\n");
+ fcp_sns_len = SCSI_SENSE_BUFFERSIZE;
+ }
+
+ /* The sense buffer can be NULL for TMF commands */
+ if (sc_cmd->sense_buffer) {
+ memset(sc_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
+ if (fcp_sns_len)
+ memcpy(sc_cmd->sense_buffer, sense_data,
+ fcp_sns_len);
+ }
+}
+
+static void qedf_unmap_sg_list(struct qedf_ctx *qedf, struct qedf_ioreq *io_req)
+{
+ struct scsi_cmnd *sc = io_req->sc_cmd;
+
+ if (io_req->bd_tbl->bd_valid && sc && scsi_sg_count(sc)) {
+ dma_unmap_sg(&qedf->pdev->dev, scsi_sglist(sc),
+ scsi_sg_count(sc), sc->sc_data_direction);
+ io_req->bd_tbl->bd_valid = 0;
+ }
+}
+
+void qedf_scsi_completion(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *io_req)
+{
+ struct scsi_cmnd *sc_cmd;
+ struct fcoe_cqe_rsp_info *fcp_rsp;
+ struct qedf_rport *fcport;
+ int refcount;
+ u16 scope, qualifier = 0;
+ u8 fw_residual_flag = 0;
+ unsigned long flags = 0;
+ u16 chk_scope = 0;
+
+ if (!io_req)
+ return;
+ if (!cqe)
+ return;
+
+ if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) ||
+ test_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags) ||
+ test_bit(QEDF_CMD_IN_ABORT, &io_req->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "io_req xid=0x%x already in cleanup or abort processing or already completed.\n",
+ io_req->xid);
+ return;
+ }
+
+ sc_cmd = io_req->sc_cmd;
+ fcp_rsp = &cqe->cqe_info.rsp_info;
+
+ if (!sc_cmd) {
+ QEDF_WARN(&(qedf->dbg_ctx), "sc_cmd is NULL!\n");
+ return;
+ }
+
+ if (!qedf_priv(sc_cmd)->io_req) {
+ QEDF_WARN(&(qedf->dbg_ctx),
+ "io_req is NULL, returned in another context.\n");
+ return;
+ }
+
+ if (!sc_cmd->device) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Device for sc_cmd %p is NULL.\n", sc_cmd);
+ return;
+ }
+
+ if (!scsi_cmd_to_rq(sc_cmd)->q) {
+ QEDF_WARN(&(qedf->dbg_ctx), "request->q is NULL so request "
+ "is not valid, sc_cmd=%p.\n", sc_cmd);
+ return;
+ }
+
+ fcport = io_req->fcport;
+
+ /*
+ * When flush is active, let the cmds be completed from the cleanup
+ * context
+ */
+ if (test_bit(QEDF_RPORT_IN_TARGET_RESET, &fcport->flags) ||
+ (test_bit(QEDF_RPORT_IN_LUN_RESET, &fcport->flags) &&
+ sc_cmd->device->lun == (u64)fcport->lun_reset_lun)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Dropping good completion xid=0x%x as fcport is flushing",
+ io_req->xid);
+ return;
+ }
+
+ qedf_parse_fcp_rsp(io_req, fcp_rsp);
+
+ qedf_unmap_sg_list(qedf, io_req);
+
+ /* Check for FCP transport error */
+ if (io_req->fcp_rsp_len > 3 && io_req->fcp_rsp_code) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "FCP I/O protocol failure xid=0x%x fcp_rsp_len=%d "
+ "fcp_rsp_code=%d.\n", io_req->xid, io_req->fcp_rsp_len,
+ io_req->fcp_rsp_code);
+ sc_cmd->result = DID_BUS_BUSY << 16;
+ goto out;
+ }
+
+ fw_residual_flag = GET_FIELD(cqe->cqe_info.rsp_info.fw_error_flags,
+ FCOE_CQE_RSP_INFO_FW_UNDERRUN);
+ if (fw_residual_flag) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Firmware detected underrun: xid=0x%x fcp_rsp.flags=0x%02x fcp_resid=%d fw_residual=0x%x lba=%02x%02x%02x%02x.\n",
+ io_req->xid, fcp_rsp->rsp_flags.flags,
+ io_req->fcp_resid,
+ cqe->cqe_info.rsp_info.fw_residual, sc_cmd->cmnd[2],
+ sc_cmd->cmnd[3], sc_cmd->cmnd[4], sc_cmd->cmnd[5]);
+
+ if (io_req->cdb_status == 0)
+ sc_cmd->result = (DID_ERROR << 16) | io_req->cdb_status;
+ else
+ sc_cmd->result = (DID_OK << 16) | io_req->cdb_status;
+
+ /*
+ * Set resid to the whole buffer length so we won't try to resue
+ * any previously data.
+ */
+ scsi_set_resid(sc_cmd, scsi_bufflen(sc_cmd));
+ goto out;
+ }
+
+ switch (io_req->fcp_status) {
+ case FC_GOOD:
+ if (io_req->cdb_status == 0) {
+ /* Good I/O completion */
+ sc_cmd->result = DID_OK << 16;
+ } else {
+ refcount = kref_read(&io_req->refcount);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "%d:0:%d:%lld xid=0x%0x op=0x%02x "
+ "lba=%02x%02x%02x%02x cdb_status=%d "
+ "fcp_resid=0x%x refcount=%d.\n",
+ qedf->lport->host->host_no, sc_cmd->device->id,
+ sc_cmd->device->lun, io_req->xid,
+ sc_cmd->cmnd[0], sc_cmd->cmnd[2], sc_cmd->cmnd[3],
+ sc_cmd->cmnd[4], sc_cmd->cmnd[5],
+ io_req->cdb_status, io_req->fcp_resid,
+ refcount);
+ sc_cmd->result = (DID_OK << 16) | io_req->cdb_status;
+
+ if (io_req->cdb_status == SAM_STAT_TASK_SET_FULL ||
+ io_req->cdb_status == SAM_STAT_BUSY) {
+ /*
+ * Check whether we need to set retry_delay at
+ * all based on retry_delay module parameter
+ * and the status qualifier.
+ */
+
+ /* Upper 2 bits */
+ scope = fcp_rsp->retry_delay_timer & 0xC000;
+ /* Lower 14 bits */
+ qualifier = fcp_rsp->retry_delay_timer & 0x3FFF;
+
+ if (qedf_retry_delay)
+ chk_scope = 1;
+ /* Record stats */
+ if (io_req->cdb_status ==
+ SAM_STAT_TASK_SET_FULL)
+ qedf->task_set_fulls++;
+ else
+ qedf->busy++;
+ }
+ }
+ if (io_req->fcp_resid)
+ scsi_set_resid(sc_cmd, io_req->fcp_resid);
+
+ if (chk_scope == 1) {
+ if ((scope == 1 || scope == 2) &&
+ (qualifier > 0 && qualifier <= 0x3FEF)) {
+ /* Check we don't go over the max */
+ if (qualifier > QEDF_RETRY_DELAY_MAX) {
+ qualifier = QEDF_RETRY_DELAY_MAX;
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "qualifier = %d\n",
+ (fcp_rsp->retry_delay_timer &
+ 0x3FFF));
+ }
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Scope = %d and qualifier = %d",
+ scope, qualifier);
+ /* Take fcport->rport_lock to
+ * update the retry_delay_timestamp
+ */
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+ fcport->retry_delay_timestamp =
+ jiffies + (qualifier * HZ / 10);
+ spin_unlock_irqrestore(&fcport->rport_lock,
+ flags);
+
+ } else {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "combination of scope = %d and qualifier = %d is not handled in qedf.\n",
+ scope, qualifier);
+ }
+ }
+ break;
+ default:
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, "fcp_status=%d.\n",
+ io_req->fcp_status);
+ break;
+ }
+
+out:
+ if (qedf_io_tracing)
+ qedf_trace_io(fcport, io_req, QEDF_IO_TRACE_RSP);
+
+ /*
+ * We wait till the end of the function to clear the
+ * outstanding bit in case we need to send an abort
+ */
+ clear_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
+
+ io_req->sc_cmd = NULL;
+ qedf_priv(sc_cmd)->io_req = NULL;
+ scsi_done(sc_cmd);
+ kref_put(&io_req->refcount, qedf_release_cmd);
+}
+
+/* Return a SCSI command in some other context besides a normal completion */
+void qedf_scsi_done(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
+ int result)
+{
+ struct scsi_cmnd *sc_cmd;
+ int refcount;
+
+ if (!io_req) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO, "io_req is NULL\n");
+ return;
+ }
+
+ if (test_and_set_bit(QEDF_CMD_ERR_SCSI_DONE, &io_req->flags)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "io_req:%p scsi_done handling already done\n",
+ io_req);
+ return;
+ }
+
+ /*
+ * We will be done with this command after this call so clear the
+ * outstanding bit.
+ */
+ clear_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
+
+ sc_cmd = io_req->sc_cmd;
+
+ if (!sc_cmd) {
+ QEDF_WARN(&(qedf->dbg_ctx), "sc_cmd is NULL!\n");
+ return;
+ }
+
+ if (!virt_addr_valid(sc_cmd)) {
+ QEDF_ERR(&qedf->dbg_ctx, "sc_cmd=%p is not valid.", sc_cmd);
+ goto bad_scsi_ptr;
+ }
+
+ if (!qedf_priv(sc_cmd)->io_req) {
+ QEDF_WARN(&(qedf->dbg_ctx),
+ "io_req is NULL, returned in another context.\n");
+ return;
+ }
+
+ if (!sc_cmd->device) {
+ QEDF_ERR(&qedf->dbg_ctx, "Device for sc_cmd %p is NULL.\n",
+ sc_cmd);
+ goto bad_scsi_ptr;
+ }
+
+ if (!virt_addr_valid(sc_cmd->device)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Device pointer for sc_cmd %p is bad.\n", sc_cmd);
+ goto bad_scsi_ptr;
+ }
+
+ if (!sc_cmd->sense_buffer) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "sc_cmd->sense_buffer for sc_cmd %p is NULL.\n",
+ sc_cmd);
+ goto bad_scsi_ptr;
+ }
+
+ if (!virt_addr_valid(sc_cmd->sense_buffer)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "sc_cmd->sense_buffer for sc_cmd %p is bad.\n",
+ sc_cmd);
+ goto bad_scsi_ptr;
+ }
+
+ qedf_unmap_sg_list(qedf, io_req);
+
+ sc_cmd->result = result << 16;
+ refcount = kref_read(&io_req->refcount);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, "%d:0:%d:%lld: Completing "
+ "sc_cmd=%p result=0x%08x op=0x%02x lba=0x%02x%02x%02x%02x, "
+ "allowed=%d retries=%d refcount=%d.\n",
+ qedf->lport->host->host_no, sc_cmd->device->id,
+ sc_cmd->device->lun, sc_cmd, sc_cmd->result, sc_cmd->cmnd[0],
+ sc_cmd->cmnd[2], sc_cmd->cmnd[3], sc_cmd->cmnd[4],
+ sc_cmd->cmnd[5], sc_cmd->allowed, sc_cmd->retries,
+ refcount);
+
+ /*
+ * Set resid to the whole buffer length so we won't try to resue any
+ * previously read data
+ */
+ scsi_set_resid(sc_cmd, scsi_bufflen(sc_cmd));
+
+ if (qedf_io_tracing)
+ qedf_trace_io(io_req->fcport, io_req, QEDF_IO_TRACE_RSP);
+
+ io_req->sc_cmd = NULL;
+ qedf_priv(sc_cmd)->io_req = NULL;
+ scsi_done(sc_cmd);
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ return;
+
+bad_scsi_ptr:
+ /*
+ * Clear the io_req->sc_cmd backpointer so we don't try to process
+ * this again
+ */
+ io_req->sc_cmd = NULL;
+ kref_put(&io_req->refcount, qedf_release_cmd); /* ID: 001 */
+}
+
+/*
+ * Handle warning type CQE completions. This is mainly used for REC timer
+ * popping.
+ */
+void qedf_process_warning_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *io_req)
+{
+ int rval, i;
+ struct qedf_rport *fcport = io_req->fcport;
+ u64 err_warn_bit_map;
+ u8 err_warn = 0xff;
+
+ if (!cqe) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "cqe is NULL for io_req %p xid=0x%x\n",
+ io_req, io_req->xid);
+ return;
+ }
+
+ QEDF_ERR(&(io_req->fcport->qedf->dbg_ctx), "Warning CQE, "
+ "xid=0x%x\n", io_req->xid);
+ QEDF_ERR(&(io_req->fcport->qedf->dbg_ctx),
+ "err_warn_bitmap=%08x:%08x\n",
+ le32_to_cpu(cqe->cqe_info.err_info.err_warn_bitmap_hi),
+ le32_to_cpu(cqe->cqe_info.err_info.err_warn_bitmap_lo));
+ QEDF_ERR(&(io_req->fcport->qedf->dbg_ctx), "tx_buff_off=%08x, "
+ "rx_buff_off=%08x, rx_id=%04x\n",
+ le32_to_cpu(cqe->cqe_info.err_info.tx_buf_off),
+ le32_to_cpu(cqe->cqe_info.err_info.rx_buf_off),
+ le32_to_cpu(cqe->cqe_info.err_info.rx_id));
+
+ /* Normalize the error bitmap value to an just an unsigned int */
+ err_warn_bit_map = (u64)
+ ((u64)cqe->cqe_info.err_info.err_warn_bitmap_hi << 32) |
+ (u64)cqe->cqe_info.err_info.err_warn_bitmap_lo;
+ for (i = 0; i < 64; i++) {
+ if (err_warn_bit_map & (u64)((u64)1 << i)) {
+ err_warn = i;
+ break;
+ }
+ }
+
+ /* Check if REC TOV expired if this is a tape device */
+ if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
+ if (err_warn ==
+ FCOE_WARNING_CODE_REC_TOV_TIMER_EXPIRATION) {
+ QEDF_ERR(&(qedf->dbg_ctx), "REC timer expired.\n");
+ if (!test_bit(QEDF_CMD_SRR_SENT, &io_req->flags)) {
+ io_req->rx_buf_off =
+ cqe->cqe_info.err_info.rx_buf_off;
+ io_req->tx_buf_off =
+ cqe->cqe_info.err_info.tx_buf_off;
+ io_req->rx_id = cqe->cqe_info.err_info.rx_id;
+ rval = qedf_send_rec(io_req);
+ /*
+ * We only want to abort the io_req if we
+ * can't queue the REC command as we want to
+ * keep the exchange open for recovery.
+ */
+ if (rval)
+ goto send_abort;
+ }
+ return;
+ }
+ }
+
+send_abort:
+ init_completion(&io_req->abts_done);
+ rval = qedf_initiate_abts(io_req, true);
+ if (rval)
+ QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
+}
+
+/* Cleanup a command when we receive an error detection completion */
+void qedf_process_error_detect(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *io_req)
+{
+ int rval;
+
+ if (io_req == NULL) {
+ QEDF_INFO(NULL, QEDF_LOG_IO, "io_req is NULL.\n");
+ return;
+ }
+
+ if (io_req->fcport == NULL) {
+ QEDF_INFO(NULL, QEDF_LOG_IO, "fcport is NULL.\n");
+ return;
+ }
+
+ if (!cqe) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "cqe is NULL for io_req %p\n", io_req);
+ return;
+ }
+
+ QEDF_ERR(&(io_req->fcport->qedf->dbg_ctx), "Error detection CQE, "
+ "xid=0x%x\n", io_req->xid);
+ QEDF_ERR(&(io_req->fcport->qedf->dbg_ctx),
+ "err_warn_bitmap=%08x:%08x\n",
+ le32_to_cpu(cqe->cqe_info.err_info.err_warn_bitmap_hi),
+ le32_to_cpu(cqe->cqe_info.err_info.err_warn_bitmap_lo));
+ QEDF_ERR(&(io_req->fcport->qedf->dbg_ctx), "tx_buff_off=%08x, "
+ "rx_buff_off=%08x, rx_id=%04x\n",
+ le32_to_cpu(cqe->cqe_info.err_info.tx_buf_off),
+ le32_to_cpu(cqe->cqe_info.err_info.rx_buf_off),
+ le32_to_cpu(cqe->cqe_info.err_info.rx_id));
+
+ /* When flush is active, let the cmds be flushed out from the cleanup context */
+ if (test_bit(QEDF_RPORT_IN_TARGET_RESET, &io_req->fcport->flags) ||
+ (test_bit(QEDF_RPORT_IN_LUN_RESET, &io_req->fcport->flags) &&
+ io_req->sc_cmd->device->lun == (u64)io_req->fcport->lun_reset_lun)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Dropping EQE for xid=0x%x as fcport is flushing",
+ io_req->xid);
+ return;
+ }
+
+ if (qedf->stop_io_on_error) {
+ qedf_stop_all_io(qedf);
+ return;
+ }
+
+ init_completion(&io_req->abts_done);
+ rval = qedf_initiate_abts(io_req, true);
+ if (rval)
+ QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
+}
+
+static void qedf_flush_els_req(struct qedf_ctx *qedf,
+ struct qedf_ioreq *els_req)
+{
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Flushing ELS request xid=0x%x refcount=%d.\n", els_req->xid,
+ kref_read(&els_req->refcount));
+
+ /*
+ * Need to distinguish this from a timeout when calling the
+ * els_req->cb_func.
+ */
+ els_req->event = QEDF_IOREQ_EV_ELS_FLUSH;
+
+ clear_bit(QEDF_CMD_OUTSTANDING, &els_req->flags);
+
+ /* Cancel the timer */
+ cancel_delayed_work_sync(&els_req->timeout_work);
+
+ /* Call callback function to complete command */
+ if (els_req->cb_func && els_req->cb_arg) {
+ els_req->cb_func(els_req->cb_arg);
+ els_req->cb_arg = NULL;
+ }
+
+ /* Release kref for original initiate_els */
+ kref_put(&els_req->refcount, qedf_release_cmd);
+}
+
+/* A value of -1 for lun is a wild card that means flush all
+ * active SCSI I/Os for the target.
+ */
+void qedf_flush_active_ios(struct qedf_rport *fcport, int lun)
+{
+ struct qedf_ioreq *io_req;
+ struct qedf_ctx *qedf;
+ struct qedf_cmd_mgr *cmd_mgr;
+ int i, rc;
+ unsigned long flags;
+ int flush_cnt = 0;
+ int wait_cnt = 100;
+ int refcount = 0;
+
+ if (!fcport) {
+ QEDF_ERR(NULL, "fcport is NULL\n");
+ return;
+ }
+
+ /* Check that fcport is still offloaded */
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_ERR(NULL, "fcport is no longer offloaded.\n");
+ return;
+ }
+
+ qedf = fcport->qedf;
+
+ if (!qedf) {
+ QEDF_ERR(NULL, "qedf is NULL.\n");
+ return;
+ }
+
+ /* Only wait for all commands to be queued in the Upload context */
+ if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags) &&
+ (lun == -1)) {
+ while (atomic_read(&fcport->ios_to_queue)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Waiting for %d I/Os to be queued\n",
+ atomic_read(&fcport->ios_to_queue));
+ if (wait_cnt == 0) {
+ QEDF_ERR(NULL,
+ "%d IOs request could not be queued\n",
+ atomic_read(&fcport->ios_to_queue));
+ }
+ msleep(20);
+ wait_cnt--;
+ }
+ }
+
+ cmd_mgr = qedf->cmd_mgr;
+
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Flush active i/o's num=0x%x fcport=0x%p port_id=0x%06x scsi_id=%d.\n",
+ atomic_read(&fcport->num_active_ios), fcport,
+ fcport->rdata->ids.port_id, fcport->rport->scsi_target_id);
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO, "Locking flush mutex.\n");
+
+ mutex_lock(&qedf->flush_mutex);
+ if (lun == -1) {
+ set_bit(QEDF_RPORT_IN_TARGET_RESET, &fcport->flags);
+ } else {
+ set_bit(QEDF_RPORT_IN_LUN_RESET, &fcport->flags);
+ fcport->lun_reset_lun = lun;
+ }
+
+ for (i = 0; i < FCOE_PARAMS_NUM_TASKS; i++) {
+ io_req = &cmd_mgr->cmds[i];
+
+ if (!io_req)
+ continue;
+ if (!io_req->fcport)
+ continue;
+
+ spin_lock_irqsave(&cmd_mgr->lock, flags);
+
+ if (io_req->alloc) {
+ if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags)) {
+ if (io_req->cmd_type == QEDF_SCSI_CMD)
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Allocated but not queued, xid=0x%x\n",
+ io_req->xid);
+ }
+ spin_unlock_irqrestore(&cmd_mgr->lock, flags);
+ } else {
+ spin_unlock_irqrestore(&cmd_mgr->lock, flags);
+ continue;
+ }
+
+ if (io_req->fcport != fcport)
+ continue;
+
+ /* In case of ABTS, CMD_OUTSTANDING is cleared on ABTS response,
+ * but RRQ is still pending.
+ * Workaround: Within qedf_send_rrq, we check if the fcport is
+ * NULL, and we drop the ref on the io_req to clean it up.
+ */
+ if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags)) {
+ refcount = kref_read(&io_req->refcount);
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Not outstanding, xid=0x%x, cmd_type=%d refcount=%d.\n",
+ io_req->xid, io_req->cmd_type, refcount);
+ /* If RRQ work has been queue, try to cancel it and
+ * free the io_req
+ */
+ if (atomic_read(&io_req->state) ==
+ QEDFC_CMD_ST_RRQ_WAIT) {
+ if (cancel_delayed_work_sync
+ (&io_req->rrq_work)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Putting reference for pending RRQ work xid=0x%x.\n",
+ io_req->xid);
+ /* ID: 003 */
+ kref_put(&io_req->refcount,
+ qedf_release_cmd);
+ }
+ }
+ continue;
+ }
+
+ /* Only consider flushing ELS during target reset */
+ if (io_req->cmd_type == QEDF_ELS &&
+ lun == -1) {
+ rc = kref_get_unless_zero(&io_req->refcount);
+ if (!rc) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "Could not get kref for ELS io_req=0x%p xid=0x%x.\n",
+ io_req, io_req->xid);
+ continue;
+ }
+ qedf_initiate_cleanup(io_req, false);
+ flush_cnt++;
+ qedf_flush_els_req(qedf, io_req);
+
+ /*
+ * Release the kref and go back to the top of the
+ * loop.
+ */
+ goto free_cmd;
+ }
+
+ if (io_req->cmd_type == QEDF_ABTS) {
+ /* ID: 004 */
+ rc = kref_get_unless_zero(&io_req->refcount);
+ if (!rc) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "Could not get kref for abort io_req=0x%p xid=0x%x.\n",
+ io_req, io_req->xid);
+ continue;
+ }
+ if (lun != -1 && io_req->lun != lun)
+ goto free_cmd;
+
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Flushing abort xid=0x%x.\n", io_req->xid);
+
+ if (cancel_delayed_work_sync(&io_req->rrq_work)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Putting ref for cancelled RRQ work xid=0x%x.\n",
+ io_req->xid);
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ }
+
+ if (cancel_delayed_work_sync(&io_req->timeout_work)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Putting ref for cancelled tmo work xid=0x%x.\n",
+ io_req->xid);
+ qedf_initiate_cleanup(io_req, true);
+ /* Notify eh_abort handler that ABTS is
+ * complete
+ */
+ complete(&io_req->abts_done);
+ clear_bit(QEDF_CMD_IN_ABORT, &io_req->flags);
+ /* ID: 002 */
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ }
+ flush_cnt++;
+ goto free_cmd;
+ }
+
+ if (!io_req->sc_cmd)
+ continue;
+ if (!io_req->sc_cmd->device) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Device backpointer NULL for sc_cmd=%p.\n",
+ io_req->sc_cmd);
+ /* Put reference for non-existent scsi_cmnd */
+ io_req->sc_cmd = NULL;
+ qedf_initiate_cleanup(io_req, false);
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ continue;
+ }
+ if (lun > -1) {
+ if (io_req->lun != lun)
+ continue;
+ }
+
+ /*
+ * Use kref_get_unless_zero in the unlikely case the command
+ * we're about to flush was completed in the normal SCSI path
+ */
+ rc = kref_get_unless_zero(&io_req->refcount);
+ if (!rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Could not get kref for "
+ "io_req=0x%p xid=0x%x\n", io_req, io_req->xid);
+ continue;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Cleanup xid=0x%x.\n", io_req->xid);
+ flush_cnt++;
+
+ /* Cleanup task and return I/O mid-layer */
+ qedf_initiate_cleanup(io_req, true);
+
+free_cmd:
+ kref_put(&io_req->refcount, qedf_release_cmd); /* ID: 004 */
+ }
+
+ wait_cnt = 60;
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Flushed 0x%x I/Os, active=0x%x.\n",
+ flush_cnt, atomic_read(&fcport->num_active_ios));
+ /* Only wait for all commands to complete in the Upload context */
+ if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags) &&
+ (lun == -1)) {
+ while (atomic_read(&fcport->num_active_ios)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Flushed 0x%x I/Os, active=0x%x cnt=%d.\n",
+ flush_cnt,
+ atomic_read(&fcport->num_active_ios),
+ wait_cnt);
+ if (wait_cnt == 0) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Flushed %d I/Os, active=%d.\n",
+ flush_cnt,
+ atomic_read(&fcport->num_active_ios));
+ for (i = 0; i < FCOE_PARAMS_NUM_TASKS; i++) {
+ io_req = &cmd_mgr->cmds[i];
+ if (io_req->fcport &&
+ io_req->fcport == fcport) {
+ refcount =
+ kref_read(&io_req->refcount);
+ set_bit(QEDF_CMD_DIRTY,
+ &io_req->flags);
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Outstanding io_req =%p xid=0x%x flags=0x%lx, sc_cmd=%p refcount=%d cmd_type=%d.\n",
+ io_req, io_req->xid,
+ io_req->flags,
+ io_req->sc_cmd,
+ refcount,
+ io_req->cmd_type);
+ }
+ }
+ WARN_ON(1);
+ break;
+ }
+ msleep(500);
+ wait_cnt--;
+ }
+ }
+
+ clear_bit(QEDF_RPORT_IN_LUN_RESET, &fcport->flags);
+ clear_bit(QEDF_RPORT_IN_TARGET_RESET, &fcport->flags);
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO, "Unlocking flush mutex.\n");
+ mutex_unlock(&qedf->flush_mutex);
+}
+
+/*
+ * Initiate a ABTS middle path command. Note that we don't have to initialize
+ * the task context for an ABTS task.
+ */
+int qedf_initiate_abts(struct qedf_ioreq *io_req, bool return_scsi_cmd_on_abts)
+{
+ struct fc_lport *lport;
+ struct qedf_rport *fcport = io_req->fcport;
+ struct fc_rport_priv *rdata;
+ struct qedf_ctx *qedf;
+ u16 xid;
+ int rc = 0;
+ unsigned long flags;
+ struct fcoe_wqe *sqe;
+ u16 sqe_idx;
+ int refcount = 0;
+
+ /* Sanity check qedf_rport before dereferencing any pointers */
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_ERR(NULL, "tgt not offloaded\n");
+ rc = 1;
+ goto out;
+ }
+
+ qedf = fcport->qedf;
+ rdata = fcport->rdata;
+
+ if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
+ QEDF_ERR(&qedf->dbg_ctx, "stale rport\n");
+ rc = 1;
+ goto out;
+ }
+
+ lport = qedf->lport;
+
+ if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "link is not ready\n");
+ rc = 1;
+ goto drop_rdata_kref;
+ }
+
+ if (atomic_read(&qedf->link_down_tmo_valid) > 0) {
+ QEDF_ERR(&(qedf->dbg_ctx), "link_down_tmo active.\n");
+ rc = 1;
+ goto drop_rdata_kref;
+ }
+
+ /* Ensure room on SQ */
+ if (!atomic_read(&fcport->free_sqes)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "No SQ entries available\n");
+ rc = 1;
+ goto drop_rdata_kref;
+ }
+
+ if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx, "fcport is uploading.\n");
+ rc = 1;
+ goto drop_rdata_kref;
+ }
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+ if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) ||
+ test_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags) ||
+ test_bit(QEDF_CMD_IN_ABORT, &io_req->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "io_req xid=0x%x sc_cmd=%p already in cleanup or abort processing or already completed.\n",
+ io_req->xid, io_req->sc_cmd);
+ rc = 1;
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+ goto drop_rdata_kref;
+ }
+
+ /* Set the command type to abort */
+ io_req->cmd_type = QEDF_ABTS;
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+
+ kref_get(&io_req->refcount);
+
+ xid = io_req->xid;
+ qedf->control_requests++;
+ qedf->packet_aborts++;
+
+ io_req->return_scsi_cmd_on_abts = return_scsi_cmd_on_abts;
+
+ set_bit(QEDF_CMD_IN_ABORT, &io_req->flags);
+ refcount = kref_read(&io_req->refcount);
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_SCSI_TM,
+ "ABTS io_req xid = 0x%x refcount=%d\n",
+ xid, refcount);
+
+ qedf_cmd_timer_set(qedf, io_req, QEDF_ABORT_TIMEOUT);
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+
+ sqe_idx = qedf_get_sqe_idx(fcport);
+ sqe = &fcport->sq[sqe_idx];
+ memset(sqe, 0, sizeof(struct fcoe_wqe));
+ io_req->task_params->sqe = sqe;
+
+ init_initiator_abort_fcoe_task(io_req->task_params);
+ qedf_ring_doorbell(fcport);
+
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+
+drop_rdata_kref:
+ kref_put(&rdata->kref, fc_rport_destroy);
+out:
+ return rc;
+}
+
+void qedf_process_abts_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *io_req)
+{
+ uint32_t r_ctl;
+ int rc;
+ struct qedf_rport *fcport = io_req->fcport;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_SCSI_TM, "Entered with xid = "
+ "0x%x cmd_type = %d\n", io_req->xid, io_req->cmd_type);
+
+ r_ctl = cqe->cqe_info.abts_info.r_ctl;
+
+ /* This was added at a point when we were scheduling abts_compl &
+ * cleanup_compl on different CPUs and there was a possibility of
+ * the io_req to be freed from the other context before we got here.
+ */
+ if (!fcport) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Dropping ABTS completion xid=0x%x as fcport is NULL",
+ io_req->xid);
+ return;
+ }
+
+ /*
+ * When flush is active, let the cmds be completed from the cleanup
+ * context
+ */
+ if (test_bit(QEDF_RPORT_IN_TARGET_RESET, &fcport->flags) ||
+ test_bit(QEDF_RPORT_IN_LUN_RESET, &fcport->flags)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Dropping ABTS completion xid=0x%x as fcport is flushing",
+ io_req->xid);
+ return;
+ }
+
+ if (!cancel_delayed_work(&io_req->timeout_work)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Wasn't able to cancel abts timeout work.\n");
+ }
+
+ switch (r_ctl) {
+ case FC_RCTL_BA_ACC:
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_SCSI_TM,
+ "ABTS response - ACC Send RRQ after R_A_TOV\n");
+ io_req->event = QEDF_IOREQ_EV_ABORT_SUCCESS;
+ rc = kref_get_unless_zero(&io_req->refcount); /* ID: 003 */
+ if (!rc) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_SCSI_TM,
+ "kref is already zero so ABTS was already completed or flushed xid=0x%x.\n",
+ io_req->xid);
+ return;
+ }
+ /*
+ * Dont release this cmd yet. It will be relesed
+ * after we get RRQ response
+ */
+ queue_delayed_work(qedf->dpc_wq, &io_req->rrq_work,
+ msecs_to_jiffies(qedf->lport->r_a_tov));
+ atomic_set(&io_req->state, QEDFC_CMD_ST_RRQ_WAIT);
+ break;
+ /* For error cases let the cleanup return the command */
+ case FC_RCTL_BA_RJT:
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_SCSI_TM,
+ "ABTS response - RJT\n");
+ io_req->event = QEDF_IOREQ_EV_ABORT_FAILED;
+ break;
+ default:
+ QEDF_ERR(&(qedf->dbg_ctx), "Unknown ABTS response\n");
+ break;
+ }
+
+ clear_bit(QEDF_CMD_IN_ABORT, &io_req->flags);
+
+ if (io_req->sc_cmd) {
+ if (!io_req->return_scsi_cmd_on_abts)
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_SCSI_TM,
+ "Not call scsi_done for xid=0x%x.\n",
+ io_req->xid);
+ if (io_req->return_scsi_cmd_on_abts)
+ qedf_scsi_done(qedf, io_req, DID_ERROR);
+ }
+
+ /* Notify eh_abort handler that ABTS is complete */
+ complete(&io_req->abts_done);
+
+ kref_put(&io_req->refcount, qedf_release_cmd);
+}
+
+int qedf_init_mp_req(struct qedf_ioreq *io_req)
+{
+ struct qedf_mp_req *mp_req;
+ struct scsi_sge *mp_req_bd;
+ struct scsi_sge *mp_resp_bd;
+ struct qedf_ctx *qedf = io_req->fcport->qedf;
+ dma_addr_t addr;
+ uint64_t sz;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_MP_REQ, "Entered.\n");
+
+ mp_req = (struct qedf_mp_req *)&(io_req->mp_req);
+ memset(mp_req, 0, sizeof(struct qedf_mp_req));
+
+ if (io_req->cmd_type != QEDF_ELS) {
+ mp_req->req_len = sizeof(struct fcp_cmnd);
+ io_req->data_xfer_len = mp_req->req_len;
+ } else
+ mp_req->req_len = io_req->data_xfer_len;
+
+ mp_req->req_buf = dma_alloc_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
+ &mp_req->req_buf_dma, GFP_KERNEL);
+ if (!mp_req->req_buf) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to alloc MP req buffer\n");
+ qedf_free_mp_resc(io_req);
+ return -ENOMEM;
+ }
+
+ mp_req->resp_buf = dma_alloc_coherent(&qedf->pdev->dev,
+ QEDF_PAGE_SIZE, &mp_req->resp_buf_dma, GFP_KERNEL);
+ if (!mp_req->resp_buf) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to alloc TM resp "
+ "buffer\n");
+ qedf_free_mp_resc(io_req);
+ return -ENOMEM;
+ }
+
+ /* Allocate and map mp_req_bd and mp_resp_bd */
+ sz = sizeof(struct scsi_sge);
+ mp_req->mp_req_bd = dma_alloc_coherent(&qedf->pdev->dev, sz,
+ &mp_req->mp_req_bd_dma, GFP_KERNEL);
+ if (!mp_req->mp_req_bd) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to alloc MP req bd\n");
+ qedf_free_mp_resc(io_req);
+ return -ENOMEM;
+ }
+
+ mp_req->mp_resp_bd = dma_alloc_coherent(&qedf->pdev->dev, sz,
+ &mp_req->mp_resp_bd_dma, GFP_KERNEL);
+ if (!mp_req->mp_resp_bd) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to alloc MP resp bd\n");
+ qedf_free_mp_resc(io_req);
+ return -ENOMEM;
+ }
+
+ /* Fill bd table */
+ addr = mp_req->req_buf_dma;
+ mp_req_bd = mp_req->mp_req_bd;
+ mp_req_bd->sge_addr.lo = U64_LO(addr);
+ mp_req_bd->sge_addr.hi = U64_HI(addr);
+ mp_req_bd->sge_len = QEDF_PAGE_SIZE;
+
+ /*
+ * MP buffer is either a task mgmt command or an ELS.
+ * So the assumption is that it consumes a single bd
+ * entry in the bd table
+ */
+ mp_resp_bd = mp_req->mp_resp_bd;
+ addr = mp_req->resp_buf_dma;
+ mp_resp_bd->sge_addr.lo = U64_LO(addr);
+ mp_resp_bd->sge_addr.hi = U64_HI(addr);
+ mp_resp_bd->sge_len = QEDF_PAGE_SIZE;
+
+ return 0;
+}
+
+/*
+ * Last ditch effort to clear the port if it's stuck. Used only after a
+ * cleanup task times out.
+ */
+static void qedf_drain_request(struct qedf_ctx *qedf)
+{
+ if (test_bit(QEDF_DRAIN_ACTIVE, &qedf->flags)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "MCP drain already active.\n");
+ return;
+ }
+
+ /* Set bit to return all queuecommand requests as busy */
+ set_bit(QEDF_DRAIN_ACTIVE, &qedf->flags);
+
+ /* Call qed drain request for function. Should be synchronous */
+ qed_ops->common->drain(qedf->cdev);
+
+ /* Settle time for CQEs to be returned */
+ msleep(100);
+
+ /* Unplug and continue */
+ clear_bit(QEDF_DRAIN_ACTIVE, &qedf->flags);
+}
+
+/*
+ * Returns SUCCESS if the cleanup task does not timeout, otherwise return
+ * FAILURE.
+ */
+int qedf_initiate_cleanup(struct qedf_ioreq *io_req,
+ bool return_scsi_cmd_on_abts)
+{
+ struct qedf_rport *fcport;
+ struct qedf_ctx *qedf;
+ int tmo = 0;
+ int rc = SUCCESS;
+ unsigned long flags;
+ struct fcoe_wqe *sqe;
+ u16 sqe_idx;
+ int refcount = 0;
+
+ fcport = io_req->fcport;
+ if (!fcport) {
+ QEDF_ERR(NULL, "fcport is NULL.\n");
+ return SUCCESS;
+ }
+
+ /* Sanity check qedf_rport before dereferencing any pointers */
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_ERR(NULL, "tgt not offloaded\n");
+ return SUCCESS;
+ }
+
+ qedf = fcport->qedf;
+ if (!qedf) {
+ QEDF_ERR(NULL, "qedf is NULL.\n");
+ return SUCCESS;
+ }
+
+ if (io_req->cmd_type == QEDF_ELS) {
+ goto process_els;
+ }
+
+ if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) ||
+ test_and_set_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "io_req xid=0x%x already in "
+ "cleanup processing or already completed.\n",
+ io_req->xid);
+ return SUCCESS;
+ }
+ set_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags);
+
+process_els:
+ /* Ensure room on SQ */
+ if (!atomic_read(&fcport->free_sqes)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "No SQ entries available\n");
+ /* Need to make sure we clear the flag since it was set */
+ clear_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags);
+ return FAILED;
+ }
+
+ if (io_req->cmd_type == QEDF_CLEANUP) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "io_req=0x%x is already a cleanup command cmd_type=%d.\n",
+ io_req->xid, io_req->cmd_type);
+ clear_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags);
+ return SUCCESS;
+ }
+
+ refcount = kref_read(&io_req->refcount);
+
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Entered xid=0x%x sc_cmd=%p cmd_type=%d flags=0x%lx refcount=%d fcport=%p port_id=0x%06x\n",
+ io_req->xid, io_req->sc_cmd, io_req->cmd_type, io_req->flags,
+ refcount, fcport, fcport->rdata->ids.port_id);
+
+ /* Cleanup cmds re-use the same TID as the original I/O */
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+ io_req->cmd_type = QEDF_CLEANUP;
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+ io_req->return_scsi_cmd_on_abts = return_scsi_cmd_on_abts;
+
+ init_completion(&io_req->cleanup_done);
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+
+ sqe_idx = qedf_get_sqe_idx(fcport);
+ sqe = &fcport->sq[sqe_idx];
+ memset(sqe, 0, sizeof(struct fcoe_wqe));
+ io_req->task_params->sqe = sqe;
+
+ init_initiator_cleanup_fcoe_task(io_req->task_params);
+ qedf_ring_doorbell(fcport);
+
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+
+ tmo = wait_for_completion_timeout(&io_req->cleanup_done,
+ QEDF_CLEANUP_TIMEOUT * HZ);
+
+ if (!tmo) {
+ rc = FAILED;
+ /* Timeout case */
+ QEDF_ERR(&(qedf->dbg_ctx), "Cleanup command timeout, "
+ "xid=%x.\n", io_req->xid);
+ clear_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags);
+ /* Issue a drain request if cleanup task times out */
+ QEDF_ERR(&(qedf->dbg_ctx), "Issuing MCP drain request.\n");
+ qedf_drain_request(qedf);
+ }
+
+ /* If it TASK MGMT handle it, reference will be decreased
+ * in qedf_execute_tmf
+ */
+ if (io_req->tm_flags == FCP_TMF_LUN_RESET ||
+ io_req->tm_flags == FCP_TMF_TGT_RESET) {
+ clear_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
+ io_req->sc_cmd = NULL;
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ complete(&io_req->tm_done);
+ }
+
+ if (io_req->sc_cmd) {
+ if (!io_req->return_scsi_cmd_on_abts)
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_SCSI_TM,
+ "Not call scsi_done for xid=0x%x.\n",
+ io_req->xid);
+ if (io_req->return_scsi_cmd_on_abts)
+ qedf_scsi_done(qedf, io_req, DID_ERROR);
+ }
+
+ if (rc == SUCCESS)
+ io_req->event = QEDF_IOREQ_EV_CLEANUP_SUCCESS;
+ else
+ io_req->event = QEDF_IOREQ_EV_CLEANUP_FAILED;
+
+ return rc;
+}
+
+void qedf_process_cleanup_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *io_req)
+{
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, "Entered xid = 0x%x\n",
+ io_req->xid);
+
+ clear_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags);
+
+ /* Complete so we can finish cleaning up the I/O */
+ complete(&io_req->cleanup_done);
+}
+
+static int qedf_execute_tmf(struct qedf_rport *fcport, struct scsi_cmnd *sc_cmd,
+ uint8_t tm_flags)
+{
+ struct qedf_ioreq *io_req;
+ struct fcoe_task_context *task;
+ struct qedf_ctx *qedf = fcport->qedf;
+ struct fc_lport *lport = qedf->lport;
+ int rc = 0;
+ uint16_t xid;
+ int tmo = 0;
+ int lun = 0;
+ unsigned long flags;
+ struct fcoe_wqe *sqe;
+ u16 sqe_idx;
+
+ if (!sc_cmd) {
+ QEDF_ERR(&qedf->dbg_ctx, "sc_cmd is NULL\n");
+ return FAILED;
+ }
+
+ lun = (int)sc_cmd->device->lun;
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "fcport not offloaded\n");
+ rc = FAILED;
+ goto no_flush;
+ }
+
+ io_req = qedf_alloc_cmd(fcport, QEDF_TASK_MGMT_CMD);
+ if (!io_req) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Failed TMF");
+ rc = -EAGAIN;
+ goto no_flush;
+ }
+
+ if (tm_flags == FCP_TMF_LUN_RESET)
+ qedf->lun_resets++;
+ else if (tm_flags == FCP_TMF_TGT_RESET)
+ qedf->target_resets++;
+
+ /* Initialize rest of io_req fields */
+ io_req->sc_cmd = sc_cmd;
+ io_req->fcport = fcport;
+ io_req->cmd_type = QEDF_TASK_MGMT_CMD;
+
+ /* Record which cpu this request is associated with */
+ io_req->cpu = smp_processor_id();
+
+ /* Set TM flags */
+ io_req->io_req_flags = QEDF_READ;
+ io_req->data_xfer_len = 0;
+ io_req->tm_flags = tm_flags;
+
+ /* Default is to return a SCSI command when an error occurs */
+ io_req->return_scsi_cmd_on_abts = false;
+
+ /* Obtain exchange id */
+ xid = io_req->xid;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_SCSI_TM, "TMF io_req xid = "
+ "0x%x\n", xid);
+
+ /* Initialize task context for this IO request */
+ task = qedf_get_task_mem(&qedf->tasks, xid);
+
+ init_completion(&io_req->tm_done);
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+
+ sqe_idx = qedf_get_sqe_idx(fcport);
+ sqe = &fcport->sq[sqe_idx];
+ memset(sqe, 0, sizeof(struct fcoe_wqe));
+
+ qedf_init_task(fcport, lport, io_req, task, sqe);
+ qedf_ring_doorbell(fcport);
+
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+
+ set_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
+ tmo = wait_for_completion_timeout(&io_req->tm_done,
+ QEDF_TM_TIMEOUT * HZ);
+
+ if (!tmo) {
+ rc = FAILED;
+ QEDF_ERR(&(qedf->dbg_ctx), "wait for tm_cmpl timeout!\n");
+ /* Clear outstanding bit since command timed out */
+ clear_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
+ io_req->sc_cmd = NULL;
+ } else {
+ /* Check TMF response code */
+ if (io_req->fcp_rsp_code == 0)
+ rc = SUCCESS;
+ else
+ rc = FAILED;
+ }
+ /*
+ * Double check that fcport has not gone into an uploading state before
+ * executing the command flush for the LUN/target.
+ */
+ if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "fcport is uploading, not executing flush.\n");
+ goto no_flush;
+ }
+ /* We do not need this io_req any more */
+ kref_put(&io_req->refcount, qedf_release_cmd);
+
+
+ if (tm_flags == FCP_TMF_LUN_RESET)
+ qedf_flush_active_ios(fcport, lun);
+ else
+ qedf_flush_active_ios(fcport, -1);
+
+no_flush:
+ if (rc != SUCCESS) {
+ QEDF_ERR(&(qedf->dbg_ctx), "task mgmt command failed...\n");
+ rc = FAILED;
+ } else {
+ QEDF_ERR(&(qedf->dbg_ctx), "task mgmt command success...\n");
+ rc = SUCCESS;
+ }
+ return rc;
+}
+
+int qedf_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags)
+{
+ struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
+ struct fc_rport_libfc_priv *rp = rport->dd_data;
+ struct qedf_rport *fcport = (struct qedf_rport *)&rp[1];
+ struct qedf_ctx *qedf;
+ struct fc_lport *lport = shost_priv(sc_cmd->device->host);
+ int rc = SUCCESS;
+ int rval;
+ struct qedf_ioreq *io_req = NULL;
+ int ref_cnt = 0;
+ struct fc_rport_priv *rdata = fcport->rdata;
+
+ QEDF_ERR(NULL,
+ "tm_flags 0x%x sc_cmd %p op = 0x%02x target_id = 0x%x lun=%d\n",
+ tm_flags, sc_cmd, sc_cmd->cmd_len ? sc_cmd->cmnd[0] : 0xff,
+ rport->scsi_target_id, (int)sc_cmd->device->lun);
+
+ if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
+ QEDF_ERR(NULL, "stale rport\n");
+ return FAILED;
+ }
+
+ QEDF_ERR(NULL, "portid=%06x tm_flags =%s\n", rdata->ids.port_id,
+ (tm_flags == FCP_TMF_TGT_RESET) ? "TARGET RESET" :
+ "LUN RESET");
+
+ if (qedf_priv(sc_cmd)->io_req) {
+ io_req = qedf_priv(sc_cmd)->io_req;
+ ref_cnt = kref_read(&io_req->refcount);
+ QEDF_ERR(NULL,
+ "orig io_req = %p xid = 0x%x ref_cnt = %d.\n",
+ io_req, io_req->xid, ref_cnt);
+ }
+
+ rval = fc_remote_port_chkready(rport);
+ if (rval) {
+ QEDF_ERR(NULL, "device_reset rport not ready\n");
+ rc = FAILED;
+ goto tmf_err;
+ }
+
+ rc = fc_block_scsi_eh(sc_cmd);
+ if (rc)
+ goto tmf_err;
+
+ if (!fcport) {
+ QEDF_ERR(NULL, "device_reset: rport is NULL\n");
+ rc = FAILED;
+ goto tmf_err;
+ }
+
+ qedf = fcport->qedf;
+
+ if (!qedf) {
+ QEDF_ERR(NULL, "qedf is NULL.\n");
+ rc = FAILED;
+ goto tmf_err;
+ }
+
+ if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx, "Connection is getting uploaded.\n");
+ rc = SUCCESS;
+ goto tmf_err;
+ }
+
+ if (test_bit(QEDF_UNLOADING, &qedf->flags) ||
+ test_bit(QEDF_DBG_STOP_IO, &qedf->flags)) {
+ rc = SUCCESS;
+ goto tmf_err;
+ }
+
+ if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
+ QEDF_ERR(&(qedf->dbg_ctx), "link is not ready\n");
+ rc = FAILED;
+ goto tmf_err;
+ }
+
+ if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
+ if (!fcport->rdata)
+ QEDF_ERR(&qedf->dbg_ctx, "fcport %p is uploading.\n",
+ fcport);
+ else
+ QEDF_ERR(&qedf->dbg_ctx,
+ "fcport %p port_id=%06x is uploading.\n",
+ fcport, fcport->rdata->ids.port_id);
+ rc = FAILED;
+ goto tmf_err;
+ }
+
+ rc = qedf_execute_tmf(fcport, sc_cmd, tm_flags);
+
+tmf_err:
+ kref_put(&rdata->kref, fc_rport_destroy);
+ return rc;
+}
+
+void qedf_process_tmf_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
+ struct qedf_ioreq *io_req)
+{
+ struct fcoe_cqe_rsp_info *fcp_rsp;
+
+ clear_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
+
+ fcp_rsp = &cqe->cqe_info.rsp_info;
+ qedf_parse_fcp_rsp(io_req, fcp_rsp);
+
+ io_req->sc_cmd = NULL;
+ complete(&io_req->tm_done);
+}
+
+void qedf_process_unsol_compl(struct qedf_ctx *qedf, uint16_t que_idx,
+ struct fcoe_cqe *cqe)
+{
+ unsigned long flags;
+ uint16_t pktlen = cqe->cqe_info.unsolic_info.pkt_len;
+ u32 payload_len, crc;
+ struct fc_frame_header *fh;
+ struct fc_frame *fp;
+ struct qedf_io_work *io_work;
+ u32 bdq_idx;
+ void *bdq_addr;
+ struct scsi_bd *p_bd_info;
+
+ p_bd_info = &cqe->cqe_info.unsolic_info.bd_info;
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
+ "address.hi=%x, address.lo=%x, opaque_data.hi=%x, opaque_data.lo=%x, bdq_prod_idx=%u, len=%u\n",
+ le32_to_cpu(p_bd_info->address.hi),
+ le32_to_cpu(p_bd_info->address.lo),
+ le32_to_cpu(p_bd_info->opaque.fcoe_opaque.hi),
+ le32_to_cpu(p_bd_info->opaque.fcoe_opaque.lo),
+ qedf->bdq_prod_idx, pktlen);
+
+ bdq_idx = le32_to_cpu(p_bd_info->opaque.fcoe_opaque.lo);
+ if (bdq_idx >= QEDF_BDQ_SIZE) {
+ QEDF_ERR(&(qedf->dbg_ctx), "bdq_idx is out of range %d.\n",
+ bdq_idx);
+ goto increment_prod;
+ }
+
+ bdq_addr = qedf->bdq[bdq_idx].buf_addr;
+ if (!bdq_addr) {
+ QEDF_ERR(&(qedf->dbg_ctx), "bdq_addr is NULL, dropping "
+ "unsolicited packet.\n");
+ goto increment_prod;
+ }
+
+ if (qedf_dump_frames) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
+ "BDQ frame is at addr=%p.\n", bdq_addr);
+ print_hex_dump(KERN_WARNING, "bdq ", DUMP_PREFIX_OFFSET, 16, 1,
+ (void *)bdq_addr, pktlen, false);
+ }
+
+ /* Allocate frame */
+ payload_len = pktlen - sizeof(struct fc_frame_header);
+ fp = fc_frame_alloc(qedf->lport, payload_len);
+ if (!fp) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate fp.\n");
+ goto increment_prod;
+ }
+
+ /* Copy data from BDQ buffer into fc_frame struct */
+ fh = (struct fc_frame_header *)fc_frame_header_get(fp);
+ memcpy(fh, (void *)bdq_addr, pktlen);
+
+ QEDF_WARN(&qedf->dbg_ctx,
+ "Processing Unsolicated frame, src=%06x dest=%06x r_ctl=0x%x type=0x%x cmd=%02x\n",
+ ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
+ fh->fh_type, fc_frame_payload_op(fp));
+
+ /* Initialize the frame so libfc sees it as a valid frame */
+ crc = fcoe_fc_crc(fp);
+ fc_frame_init(fp);
+ fr_dev(fp) = qedf->lport;
+ fr_sof(fp) = FC_SOF_I3;
+ fr_eof(fp) = FC_EOF_T;
+ fr_crc(fp) = cpu_to_le32(~crc);
+
+ /*
+ * We need to return the frame back up to libfc in a non-atomic
+ * context
+ */
+ io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
+ if (!io_work) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
+ "work for I/O completion.\n");
+ fc_frame_free(fp);
+ goto increment_prod;
+ }
+ memset(io_work, 0, sizeof(struct qedf_io_work));
+
+ INIT_WORK(&io_work->work, qedf_fp_io_handler);
+
+ /* Copy contents of CQE for deferred processing */
+ memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
+
+ io_work->qedf = qedf;
+ io_work->fp = fp;
+
+ queue_work_on(smp_processor_id(), qedf_io_wq, &io_work->work);
+increment_prod:
+ spin_lock_irqsave(&qedf->hba_lock, flags);
+
+ /* Increment producer to let f/w know we've handled the frame */
+ qedf->bdq_prod_idx++;
+
+ /* Producer index wraps at uint16_t boundary */
+ if (qedf->bdq_prod_idx == 0xffff)
+ qedf->bdq_prod_idx = 0;
+
+ writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
+ readw(qedf->bdq_primary_prod);
+ writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
+ readw(qedf->bdq_secondary_prod);
+
+ spin_unlock_irqrestore(&qedf->hba_lock, flags);
+}
diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
new file mode 100644
index 000000000..d969b0dc9
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -0,0 +1,4200 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+#include <linux/highmem.h>
+#include <linux/crc32.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/kthread.h>
+#include <linux/phylink.h>
+#include <scsi/libfc.h>
+#include <scsi/scsi_host.h>
+#include <scsi/fc_frame.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/cpu.h>
+#include "qedf.h"
+#include "qedf_dbg.h"
+#include <uapi/linux/pci_regs.h>
+
+const struct qed_fcoe_ops *qed_ops;
+
+static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
+static void qedf_remove(struct pci_dev *pdev);
+static void qedf_shutdown(struct pci_dev *pdev);
+static void qedf_schedule_recovery_handler(void *dev);
+static void qedf_recovery_handler(struct work_struct *work);
+static int qedf_suspend(struct pci_dev *pdev, pm_message_t state);
+
+/*
+ * Driver module parameters.
+ */
+static unsigned int qedf_dev_loss_tmo = 60;
+module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
+MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached "
+ "remote ports (default 60)");
+
+uint qedf_debug = QEDF_LOG_INFO;
+module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
+ " mask");
+
+static uint qedf_fipvlan_retries = 60;
+module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
+MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
+ "before giving up (default 60)");
+
+static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
+module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
+MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
+ "(default 1002).");
+
+static int qedf_default_prio = -1;
+module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
+MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
+ " traffic (value between 0 and 7, default 3).");
+
+uint qedf_dump_frames;
+module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
+ "(default off)");
+
+static uint qedf_queue_depth;
+module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
+MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
+ "by the qedf driver. Default is 0 (use OS default).");
+
+uint qedf_io_tracing;
+module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
+ "into trace buffer. (default off).");
+
+static uint qedf_max_lun = MAX_FIBRE_LUNS;
+module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
+MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
+ "supports. (default 0xffffffff)");
+
+uint qedf_link_down_tmo;
+module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
+MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
+ "link is down by N seconds.");
+
+bool qedf_retry_delay;
+module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
+ "delay handling (default off).");
+
+static bool qedf_dcbx_no_wait;
+module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
+ "sending FIP VLAN requests on link up (Default: off).");
+
+static uint qedf_dp_module;
+module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
+MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
+ "qed module during probe.");
+
+static uint qedf_dp_level = QED_LEVEL_NOTICE;
+module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
+MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module "
+ "during probe (0-3: 0 more verbose).");
+
+static bool qedf_enable_recovery = true;
+module_param_named(enable_recovery, qedf_enable_recovery,
+ bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware "
+ "interface level errors 0 = Disabled, 1 = Enabled (Default: 1).");
+
+struct workqueue_struct *qedf_io_wq;
+
+static struct fcoe_percpu_s qedf_global;
+static DEFINE_SPINLOCK(qedf_global_lock);
+
+static struct kmem_cache *qedf_io_work_cache;
+
+void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
+{
+ int vlan_id_tmp = 0;
+
+ vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT);
+ qedf->vlan_id = vlan_id_tmp;
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Setting vlan_id=0x%04x prio=%d.\n",
+ vlan_id_tmp, qedf->prio);
+}
+
+/* Returns true if we have a valid vlan, false otherwise */
+static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
+{
+
+ while (qedf->fipvlan_retries--) {
+ /* This is to catch if link goes down during fipvlan retries */
+ if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
+ QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
+ return false;
+ }
+
+ if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n");
+ return false;
+ }
+
+ if (qedf->vlan_id > 0) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "vlan = 0x%x already set, calling ctlr_link_up.\n",
+ qedf->vlan_id);
+ if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
+ fcoe_ctlr_link_up(&qedf->ctlr);
+ return true;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Retry %d.\n", qedf->fipvlan_retries);
+ init_completion(&qedf->fipvlan_compl);
+ qedf_fcoe_send_vlan_req(qedf);
+ wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ);
+ }
+
+ return false;
+}
+
+static void qedf_handle_link_update(struct work_struct *work)
+{
+ struct qedf_ctx *qedf =
+ container_of(work, struct qedf_ctx, link_update.work);
+ int rc;
+
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
+ atomic_read(&qedf->link_state));
+
+ if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
+ rc = qedf_initiate_fipvlan_req(qedf);
+ if (rc)
+ return;
+
+ if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Link is down, resetting vlan_id.\n");
+ qedf->vlan_id = 0;
+ return;
+ }
+
+ /*
+ * If we get here then we never received a repsonse to our
+ * fip vlan request so set the vlan_id to the default and
+ * tell FCoE that the link is up
+ */
+ QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
+ "response, falling back to default VLAN %d.\n",
+ qedf_fallback_vlan);
+ qedf_set_vlan_id(qedf, qedf_fallback_vlan);
+
+ /*
+ * Zero out data_src_addr so we'll update it with the new
+ * lport port_id
+ */
+ eth_zero_addr(qedf->data_src_addr);
+ fcoe_ctlr_link_up(&qedf->ctlr);
+ } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
+ /*
+ * If we hit here and link_down_tmo_valid is still 1 it means
+ * that link_down_tmo timed out so set it to 0 to make sure any
+ * other readers have accurate state.
+ */
+ atomic_set(&qedf->link_down_tmo_valid, 0);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Calling fcoe_ctlr_link_down().\n");
+ fcoe_ctlr_link_down(&qedf->ctlr);
+ if (qedf_wait_for_upload(qedf) == false)
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Could not upload all sessions.\n");
+ /* Reset the number of FIP VLAN retries */
+ qedf->fipvlan_retries = qedf_fipvlan_retries;
+ }
+}
+
+#define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1
+#define QEDF_FCOE_MAC_METHOD_FCF_MAP 2
+#define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3
+static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
+{
+ u8 *granted_mac;
+ struct fc_frame_header *fh = fc_frame_header_get(fp);
+ u8 fc_map[3];
+ int method = 0;
+
+ /* Get granted MAC address from FIP FLOGI payload */
+ granted_mac = fr_cb(fp)->granted_mac;
+
+ /*
+ * We set the source MAC for FCoE traffic based on the Granted MAC
+ * address from the switch.
+ *
+ * If granted_mac is non-zero, we used that.
+ * If the granted_mac is zeroed out, created the FCoE MAC based on
+ * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
+ * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
+ * d_id of the FLOGI frame.
+ */
+ if (!is_zero_ether_addr(granted_mac)) {
+ ether_addr_copy(qedf->data_src_addr, granted_mac);
+ method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
+ } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
+ hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
+ qedf->data_src_addr[0] = fc_map[0];
+ qedf->data_src_addr[1] = fc_map[1];
+ qedf->data_src_addr[2] = fc_map[2];
+ qedf->data_src_addr[3] = fh->fh_d_id[0];
+ qedf->data_src_addr[4] = fh->fh_d_id[1];
+ qedf->data_src_addr[5] = fh->fh_d_id[2];
+ method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
+ } else {
+ fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
+ method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
+}
+
+static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
+ void *arg)
+{
+ struct fc_exch *exch = fc_seq_exch(seq);
+ struct fc_lport *lport = exch->lp;
+ struct qedf_ctx *qedf = lport_priv(lport);
+
+ if (!qedf) {
+ QEDF_ERR(NULL, "qedf is NULL.\n");
+ return;
+ }
+
+ /*
+ * If ERR_PTR is set then don't try to stat anything as it will cause
+ * a crash when we access fp.
+ */
+ if (IS_ERR(fp)) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "fp has IS_ERR() set.\n");
+ goto skip_stat;
+ }
+
+ /* Log stats for FLOGI reject */
+ if (fc_frame_payload_op(fp) == ELS_LS_RJT)
+ qedf->flogi_failed++;
+ else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
+ /* Set the source MAC we will use for FCoE traffic */
+ qedf_set_data_src_addr(qedf, fp);
+ qedf->flogi_pending = 0;
+ }
+
+ /* Complete flogi_compl so we can proceed to sending ADISCs */
+ complete(&qedf->flogi_compl);
+
+skip_stat:
+ /* Report response to libfc */
+ fc_lport_flogi_resp(seq, fp, lport);
+}
+
+static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
+ struct fc_frame *fp, unsigned int op,
+ void (*resp)(struct fc_seq *,
+ struct fc_frame *,
+ void *),
+ void *arg, u32 timeout)
+{
+ struct qedf_ctx *qedf = lport_priv(lport);
+
+ /*
+ * Intercept FLOGI for statistic purposes. Note we use the resp
+ * callback to tell if this is really a flogi.
+ */
+ if (resp == fc_lport_flogi_resp) {
+ qedf->flogi_cnt++;
+ if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
+ schedule_delayed_work(&qedf->stag_work, 2);
+ return NULL;
+ }
+ qedf->flogi_pending++;
+ return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
+ arg, timeout);
+ }
+
+ return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
+}
+
+int qedf_send_flogi(struct qedf_ctx *qedf)
+{
+ struct fc_lport *lport;
+ struct fc_frame *fp;
+
+ lport = qedf->lport;
+
+ if (!lport->tt.elsct_send) {
+ QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
+ return -EINVAL;
+ }
+
+ fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
+ if (!fp) {
+ QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
+ return -ENOMEM;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
+ "Sending FLOGI to reestablish session with switch.\n");
+ lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
+ ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
+
+ init_completion(&qedf->flogi_compl);
+
+ return 0;
+}
+
+/*
+ * This function is called if link_down_tmo is in use. If we get a link up and
+ * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
+ * sessions with targets. Otherwise, just call fcoe_ctlr_link_up().
+ */
+static void qedf_link_recovery(struct work_struct *work)
+{
+ struct qedf_ctx *qedf =
+ container_of(work, struct qedf_ctx, link_recovery.work);
+ struct fc_lport *lport = qedf->lport;
+ struct fc_rport_priv *rdata;
+ bool rc;
+ int retries = 30;
+ int rval, i;
+ struct list_head rdata_login_list;
+
+ INIT_LIST_HEAD(&rdata_login_list);
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Link down tmo did not expire.\n");
+
+ /*
+ * Essentially reset the fcoe_ctlr here without affecting the state
+ * of the libfc structs.
+ */
+ qedf->ctlr.state = FIP_ST_LINK_WAIT;
+ fcoe_ctlr_link_down(&qedf->ctlr);
+
+ /*
+ * Bring the link up before we send the fipvlan request so libfcoe
+ * can select a new fcf in parallel
+ */
+ fcoe_ctlr_link_up(&qedf->ctlr);
+
+ /* Since the link when down and up to verify which vlan we're on */
+ qedf->fipvlan_retries = qedf_fipvlan_retries;
+ rc = qedf_initiate_fipvlan_req(qedf);
+ /* If getting the VLAN fails, set the VLAN to the fallback one */
+ if (!rc)
+ qedf_set_vlan_id(qedf, qedf_fallback_vlan);
+
+ /*
+ * We need to wait for an FCF to be selected due to the
+ * fcoe_ctlr_link_up other the FLOGI will be rejected.
+ */
+ while (retries > 0) {
+ if (qedf->ctlr.sel_fcf) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "FCF reselected, proceeding with FLOGI.\n");
+ break;
+ }
+ msleep(500);
+ retries--;
+ }
+
+ if (retries < 1) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
+ "FCF selection.\n");
+ return;
+ }
+
+ rval = qedf_send_flogi(qedf);
+ if (rval)
+ return;
+
+ /* Wait for FLOGI completion before proceeding with sending ADISCs */
+ i = wait_for_completion_timeout(&qedf->flogi_compl,
+ qedf->lport->r_a_tov);
+ if (i == 0) {
+ QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
+ return;
+ }
+
+ /*
+ * Call lport->tt.rport_login which will cause libfc to send an
+ * ADISC since the rport is in state ready.
+ */
+ mutex_lock(&lport->disc.disc_mutex);
+ list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
+ if (kref_get_unless_zero(&rdata->kref)) {
+ fc_rport_login(rdata);
+ kref_put(&rdata->kref, fc_rport_destroy);
+ }
+ }
+ mutex_unlock(&lport->disc.disc_mutex);
+}
+
+static void qedf_update_link_speed(struct qedf_ctx *qedf,
+ struct qed_link_output *link)
+{
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps);
+ struct fc_lport *lport = qedf->lport;
+
+ lport->link_speed = FC_PORTSPEED_UNKNOWN;
+ lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
+
+ /* Set fc_host link speed */
+ switch (link->speed) {
+ case 10000:
+ lport->link_speed = FC_PORTSPEED_10GBIT;
+ break;
+ case 25000:
+ lport->link_speed = FC_PORTSPEED_25GBIT;
+ break;
+ case 40000:
+ lport->link_speed = FC_PORTSPEED_40GBIT;
+ break;
+ case 50000:
+ lport->link_speed = FC_PORTSPEED_50GBIT;
+ break;
+ case 100000:
+ lport->link_speed = FC_PORTSPEED_100GBIT;
+ break;
+ case 20000:
+ lport->link_speed = FC_PORTSPEED_20GBIT;
+ break;
+ default:
+ lport->link_speed = FC_PORTSPEED_UNKNOWN;
+ break;
+ }
+
+ /*
+ * Set supported link speed by querying the supported
+ * capabilities of the link.
+ */
+
+ phylink_zero(sup_caps);
+ phylink_set(sup_caps, 10000baseT_Full);
+ phylink_set(sup_caps, 10000baseKX4_Full);
+ phylink_set(sup_caps, 10000baseR_FEC);
+ phylink_set(sup_caps, 10000baseCR_Full);
+ phylink_set(sup_caps, 10000baseSR_Full);
+ phylink_set(sup_caps, 10000baseLR_Full);
+ phylink_set(sup_caps, 10000baseLRM_Full);
+ phylink_set(sup_caps, 10000baseKR_Full);
+
+ if (linkmode_intersects(link->supported_caps, sup_caps))
+ lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
+
+ phylink_zero(sup_caps);
+ phylink_set(sup_caps, 25000baseKR_Full);
+ phylink_set(sup_caps, 25000baseCR_Full);
+ phylink_set(sup_caps, 25000baseSR_Full);
+
+ if (linkmode_intersects(link->supported_caps, sup_caps))
+ lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
+
+ phylink_zero(sup_caps);
+ phylink_set(sup_caps, 40000baseLR4_Full);
+ phylink_set(sup_caps, 40000baseKR4_Full);
+ phylink_set(sup_caps, 40000baseCR4_Full);
+ phylink_set(sup_caps, 40000baseSR4_Full);
+
+ if (linkmode_intersects(link->supported_caps, sup_caps))
+ lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
+
+ phylink_zero(sup_caps);
+ phylink_set(sup_caps, 50000baseKR2_Full);
+ phylink_set(sup_caps, 50000baseCR2_Full);
+ phylink_set(sup_caps, 50000baseSR2_Full);
+
+ if (linkmode_intersects(link->supported_caps, sup_caps))
+ lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
+
+ phylink_zero(sup_caps);
+ phylink_set(sup_caps, 100000baseKR4_Full);
+ phylink_set(sup_caps, 100000baseSR4_Full);
+ phylink_set(sup_caps, 100000baseCR4_Full);
+ phylink_set(sup_caps, 100000baseLR4_ER4_Full);
+
+ if (linkmode_intersects(link->supported_caps, sup_caps))
+ lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
+
+ phylink_zero(sup_caps);
+ phylink_set(sup_caps, 20000baseKR2_Full);
+
+ if (linkmode_intersects(link->supported_caps, sup_caps))
+ lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
+
+ if (lport->host && lport->host->shost_data)
+ fc_host_supported_speeds(lport->host) =
+ lport->link_supported_speeds;
+}
+
+static void qedf_bw_update(void *dev)
+{
+ struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
+ struct qed_link_output link;
+
+ /* Get the latest status of the link */
+ qed_ops->common->get_link(qedf->cdev, &link);
+
+ if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Ignore link update, driver getting unload.\n");
+ return;
+ }
+
+ if (link.link_up) {
+ if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
+ qedf_update_link_speed(qedf, &link);
+ else
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Ignore bw update, link is down.\n");
+
+ } else {
+ QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n");
+ }
+}
+
+static void qedf_link_update(void *dev, struct qed_link_output *link)
+{
+ struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
+
+ /*
+ * Prevent race where we're removing the module and we get link update
+ * for qed.
+ */
+ if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Ignore link update, driver getting unload.\n");
+ return;
+ }
+
+ if (link->link_up) {
+ if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
+ QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Ignoring link up event as link is already up.\n");
+ return;
+ }
+ QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
+ link->speed / 1000);
+
+ /* Cancel any pending link down work */
+ cancel_delayed_work(&qedf->link_update);
+
+ atomic_set(&qedf->link_state, QEDF_LINK_UP);
+ qedf_update_link_speed(qedf, link);
+
+ if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
+ qedf_dcbx_no_wait) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "DCBx done.\n");
+ if (atomic_read(&qedf->link_down_tmo_valid) > 0)
+ queue_delayed_work(qedf->link_update_wq,
+ &qedf->link_recovery, 0);
+ else
+ queue_delayed_work(qedf->link_update_wq,
+ &qedf->link_update, 0);
+ atomic_set(&qedf->link_down_tmo_valid, 0);
+ }
+
+ } else {
+ QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
+
+ atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
+ atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
+ /*
+ * Flag that we're waiting for the link to come back up before
+ * informing the fcoe layer of the event.
+ */
+ if (qedf_link_down_tmo > 0) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Starting link down tmo.\n");
+ atomic_set(&qedf->link_down_tmo_valid, 1);
+ }
+ qedf->vlan_id = 0;
+ qedf_update_link_speed(qedf, link);
+ queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
+ qedf_link_down_tmo * HZ);
+ }
+}
+
+
+static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
+{
+ struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
+ u8 tmp_prio;
+
+ QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
+ "prio=%d.\n", get->operational.valid, get->operational.enabled,
+ get->operational.app_prio.fcoe);
+
+ if (get->operational.enabled && get->operational.valid) {
+ /* If DCBX was already negotiated on link up then just exit */
+ if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "DCBX already set on link up.\n");
+ return;
+ }
+
+ atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
+
+ /*
+ * Set the 8021q priority in the following manner:
+ *
+ * 1. If a modparam is set use that
+ * 2. If the value is not between 0..7 use the default
+ * 3. Use the priority we get from the DCBX app tag
+ */
+ tmp_prio = get->operational.app_prio.fcoe;
+ if (qedf_default_prio > -1)
+ qedf->prio = qedf_default_prio;
+ else if (tmp_prio > 7) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "FIP/FCoE prio %d out of range, setting to %d.\n",
+ tmp_prio, QEDF_DEFAULT_PRIO);
+ qedf->prio = QEDF_DEFAULT_PRIO;
+ } else
+ qedf->prio = tmp_prio;
+
+ if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
+ !qedf_dcbx_no_wait) {
+ if (atomic_read(&qedf->link_down_tmo_valid) > 0)
+ queue_delayed_work(qedf->link_update_wq,
+ &qedf->link_recovery, 0);
+ else
+ queue_delayed_work(qedf->link_update_wq,
+ &qedf->link_update, 0);
+ atomic_set(&qedf->link_down_tmo_valid, 0);
+ }
+ }
+
+}
+
+static u32 qedf_get_login_failures(void *cookie)
+{
+ struct qedf_ctx *qedf;
+
+ qedf = (struct qedf_ctx *)cookie;
+ return qedf->flogi_failed;
+}
+
+static struct qed_fcoe_cb_ops qedf_cb_ops = {
+ {
+ .link_update = qedf_link_update,
+ .bw_update = qedf_bw_update,
+ .schedule_recovery_handler = qedf_schedule_recovery_handler,
+ .dcbx_aen = qedf_dcbx_handler,
+ .get_generic_tlv_data = qedf_get_generic_tlv_data,
+ .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
+ .schedule_hw_err_handler = qedf_schedule_hw_err_handler,
+ }
+};
+
+/*
+ * Various transport templates.
+ */
+
+static struct scsi_transport_template *qedf_fc_transport_template;
+static struct scsi_transport_template *qedf_fc_vport_transport_template;
+
+/*
+ * SCSI EH handlers
+ */
+static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
+{
+ struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
+ struct fc_lport *lport;
+ struct qedf_ctx *qedf;
+ struct qedf_ioreq *io_req;
+ struct fc_rport_libfc_priv *rp = rport->dd_data;
+ struct fc_rport_priv *rdata;
+ struct qedf_rport *fcport = NULL;
+ int rc = FAILED;
+ int wait_count = 100;
+ int refcount = 0;
+ int rval;
+ int got_ref = 0;
+
+ lport = shost_priv(sc_cmd->device->host);
+ qedf = (struct qedf_ctx *)lport_priv(lport);
+
+ /* rport and tgt are allocated together, so tgt should be non-NULL */
+ fcport = (struct qedf_rport *)&rp[1];
+ rdata = fcport->rdata;
+ if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
+ QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
+ rc = SUCCESS;
+ goto out;
+ }
+
+
+ io_req = qedf_priv(sc_cmd)->io_req;
+ if (!io_req) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
+ sc_cmd, sc_cmd->cmnd[0],
+ rdata->ids.port_id);
+ rc = SUCCESS;
+ goto drop_rdata_kref;
+ }
+
+ rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
+ if (rval)
+ got_ref = 1;
+
+ /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
+ if (!rval || io_req->sc_cmd != sc_cmd) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
+ io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
+
+ goto drop_rdata_kref;
+ }
+
+ if (fc_remote_port_chkready(rport)) {
+ refcount = kref_read(&io_req->refcount);
+ QEDF_ERR(&qedf->dbg_ctx,
+ "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
+ io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
+ refcount, rdata->ids.port_id);
+
+ goto drop_rdata_kref;
+ }
+
+ rc = fc_block_scsi_eh(sc_cmd);
+ if (rc)
+ goto drop_rdata_kref;
+
+ if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Connection uploading, xid=0x%x., port_id=%06x\n",
+ io_req->xid, rdata->ids.port_id);
+ while (io_req->sc_cmd && (wait_count != 0)) {
+ msleep(100);
+ wait_count--;
+ }
+ if (wait_count) {
+ QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
+ rc = SUCCESS;
+ } else {
+ QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
+ rc = FAILED;
+ }
+ goto drop_rdata_kref;
+ }
+
+ if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
+ QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
+ goto drop_rdata_kref;
+ }
+
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
+ io_req, sc_cmd, io_req->xid, io_req->fp_idx,
+ rdata->ids.port_id);
+
+ if (qedf->stop_io_on_error) {
+ qedf_stop_all_io(qedf);
+ rc = SUCCESS;
+ goto drop_rdata_kref;
+ }
+
+ init_completion(&io_req->abts_done);
+ rval = qedf_initiate_abts(io_req, true);
+ if (rval) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
+ /*
+ * If we fail to queue the ABTS then return this command to
+ * the SCSI layer as it will own and free the xid
+ */
+ rc = SUCCESS;
+ qedf_scsi_done(qedf, io_req, DID_ERROR);
+ goto drop_rdata_kref;
+ }
+
+ wait_for_completion(&io_req->abts_done);
+
+ if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
+ io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
+ io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
+ /*
+ * If we get a reponse to the abort this is success from
+ * the perspective that all references to the command have
+ * been removed from the driver and firmware
+ */
+ rc = SUCCESS;
+ } else {
+ /* If the abort and cleanup failed then return a failure */
+ rc = FAILED;
+ }
+
+ if (rc == SUCCESS)
+ QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
+ io_req->xid);
+ else
+ QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
+ io_req->xid);
+
+drop_rdata_kref:
+ kref_put(&rdata->kref, fc_rport_destroy);
+out:
+ if (got_ref)
+ kref_put(&io_req->refcount, qedf_release_cmd);
+ return rc;
+}
+
+static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
+{
+ QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
+ sc_cmd->device->host->host_no, sc_cmd->device->id,
+ sc_cmd->device->lun);
+ return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
+}
+
+static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
+{
+ QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
+ sc_cmd->device->host->host_no, sc_cmd->device->id,
+ sc_cmd->device->lun);
+ return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
+}
+
+bool qedf_wait_for_upload(struct qedf_ctx *qedf)
+{
+ struct qedf_rport *fcport;
+ int wait_cnt = 120;
+
+ while (wait_cnt--) {
+ if (atomic_read(&qedf->num_offloads))
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Waiting for all uploads to complete num_offloads = 0x%x.\n",
+ atomic_read(&qedf->num_offloads));
+ else
+ return true;
+ msleep(500);
+ }
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
+ if (test_bit(QEDF_RPORT_SESSION_READY,
+ &fcport->flags)) {
+ if (fcport->rdata)
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Waiting for fcport %p portid=%06x.\n",
+ fcport, fcport->rdata->ids.port_id);
+ } else {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Waiting for fcport %p.\n", fcport);
+ }
+ }
+
+ rcu_read_unlock();
+ return false;
+}
+
+/* Performs soft reset of qedf_ctx by simulating a link down/up */
+void qedf_ctx_soft_reset(struct fc_lport *lport)
+{
+ struct qedf_ctx *qedf;
+ struct qed_link_output if_link;
+
+ if (lport->vport) {
+ printk_ratelimited("Cannot issue host reset on NPIV port.\n");
+ return;
+ }
+
+ qedf = lport_priv(lport);
+
+ qedf->flogi_pending = 0;
+ /* For host reset, essentially do a soft link up/down */
+ atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Queuing link down work.\n");
+ queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
+ 0);
+
+ if (qedf_wait_for_upload(qedf) == false) {
+ QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
+ WARN_ON(atomic_read(&qedf->num_offloads));
+ }
+
+ /* Before setting link up query physical link state */
+ qed_ops->common->get_link(qedf->cdev, &if_link);
+ /* Bail if the physical link is not up */
+ if (!if_link.link_up) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Physical link is not up.\n");
+ return;
+ }
+ /* Flush and wait to make sure link down is processed */
+ flush_delayed_work(&qedf->link_update);
+ msleep(500);
+
+ atomic_set(&qedf->link_state, QEDF_LINK_UP);
+ qedf->vlan_id = 0;
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Queue link up work.\n");
+ queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
+ 0);
+}
+
+/* Reset the host by gracefully logging out and then logging back in */
+static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
+{
+ struct fc_lport *lport;
+ struct qedf_ctx *qedf;
+
+ lport = shost_priv(sc_cmd->device->host);
+ qedf = lport_priv(lport);
+
+ if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
+ test_bit(QEDF_UNLOADING, &qedf->flags))
+ return FAILED;
+
+ QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
+
+ qedf_ctx_soft_reset(lport);
+
+ return SUCCESS;
+}
+
+static int qedf_slave_configure(struct scsi_device *sdev)
+{
+ if (qedf_queue_depth) {
+ scsi_change_queue_depth(sdev, qedf_queue_depth);
+ }
+
+ return 0;
+}
+
+static struct scsi_host_template qedf_host_template = {
+ .module = THIS_MODULE,
+ .name = QEDF_MODULE_NAME,
+ .this_id = -1,
+ .cmd_per_lun = 32,
+ .max_sectors = 0xffff,
+ .queuecommand = qedf_queuecommand,
+ .shost_groups = qedf_host_groups,
+ .eh_abort_handler = qedf_eh_abort,
+ .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
+ .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
+ .eh_host_reset_handler = qedf_eh_host_reset,
+ .slave_configure = qedf_slave_configure,
+ .dma_boundary = QED_HW_DMA_BOUNDARY,
+ .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
+ .can_queue = FCOE_PARAMS_NUM_TASKS,
+ .change_queue_depth = scsi_change_queue_depth,
+ .cmd_size = sizeof(struct qedf_cmd_priv),
+};
+
+static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
+{
+ int rc;
+
+ spin_lock(&qedf_global_lock);
+ rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
+ spin_unlock(&qedf_global_lock);
+
+ return rc;
+}
+
+static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
+{
+ struct qedf_rport *fcport;
+ struct fc_rport_priv *rdata;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
+ rdata = fcport->rdata;
+ if (rdata == NULL)
+ continue;
+ if (rdata->ids.port_id == port_id) {
+ rcu_read_unlock();
+ return fcport;
+ }
+ }
+ rcu_read_unlock();
+
+ /* Return NULL to caller to let them know fcport was not found */
+ return NULL;
+}
+
+/* Transmits an ELS frame over an offloaded session */
+static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
+{
+ struct fc_frame_header *fh;
+ int rc = 0;
+
+ fh = fc_frame_header_get(fp);
+ if ((fh->fh_type == FC_TYPE_ELS) &&
+ (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
+ switch (fc_frame_payload_op(fp)) {
+ case ELS_ADISC:
+ qedf_send_adisc(fcport, fp);
+ rc = 1;
+ break;
+ }
+ }
+
+ return rc;
+}
+
+/*
+ * qedf_xmit - qedf FCoE frame transmit function
+ */
+static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
+{
+ struct fc_lport *base_lport;
+ struct qedf_ctx *qedf;
+ struct ethhdr *eh;
+ struct fcoe_crc_eof *cp;
+ struct sk_buff *skb;
+ struct fc_frame_header *fh;
+ struct fcoe_hdr *hp;
+ u8 sof, eof;
+ u32 crc;
+ unsigned int hlen, tlen, elen;
+ int wlen;
+ struct fc_lport *tmp_lport;
+ struct fc_lport *vn_port = NULL;
+ struct qedf_rport *fcport;
+ int rc;
+ u16 vlan_tci = 0;
+
+ qedf = (struct qedf_ctx *)lport_priv(lport);
+
+ fh = fc_frame_header_get(fp);
+ skb = fp_skb(fp);
+
+ /* Filter out traffic to other NPIV ports on the same host */
+ if (lport->vport)
+ base_lport = shost_priv(vport_to_shost(lport->vport));
+ else
+ base_lport = lport;
+
+ /* Flag if the destination is the base port */
+ if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
+ vn_port = base_lport;
+ } else {
+ /* Got through the list of vports attached to the base_lport
+ * and see if we have a match with the destination address.
+ */
+ list_for_each_entry(tmp_lport, &base_lport->vports, list) {
+ if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
+ vn_port = tmp_lport;
+ break;
+ }
+ }
+ }
+ if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
+ struct fc_rport_priv *rdata = NULL;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
+ "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
+ kfree_skb(skb);
+ rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
+ if (rdata) {
+ rdata->retries = lport->max_rport_retry_count;
+ kref_put(&rdata->kref, fc_rport_destroy);
+ }
+ return -EINVAL;
+ }
+ /* End NPIV filtering */
+
+ if (!qedf->ctlr.sel_fcf) {
+ kfree_skb(skb);
+ return 0;
+ }
+
+ if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
+ QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
+ kfree_skb(skb);
+ return 0;
+ }
+
+ if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
+ QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
+ kfree_skb(skb);
+ return 0;
+ }
+
+ if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
+ if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
+ return 0;
+ }
+
+ /* Check to see if this needs to be sent on an offloaded session */
+ fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
+
+ if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ rc = qedf_xmit_l2_frame(fcport, fp);
+ /*
+ * If the frame was successfully sent over the middle path
+ * then do not try to also send it over the LL2 path
+ */
+ if (rc)
+ return 0;
+ }
+
+ sof = fr_sof(fp);
+ eof = fr_eof(fp);
+
+ elen = sizeof(struct ethhdr);
+ hlen = sizeof(struct fcoe_hdr);
+ tlen = sizeof(struct fcoe_crc_eof);
+ wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
+
+ skb->ip_summed = CHECKSUM_NONE;
+ crc = fcoe_fc_crc(fp);
+
+ /* copy port crc and eof to the skb buff */
+ if (skb_is_nonlinear(skb)) {
+ skb_frag_t *frag;
+
+ if (qedf_get_paged_crc_eof(skb, tlen)) {
+ kfree_skb(skb);
+ return -ENOMEM;
+ }
+ frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
+ cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
+ } else {
+ cp = skb_put(skb, tlen);
+ }
+
+ memset(cp, 0, sizeof(*cp));
+ cp->fcoe_eof = eof;
+ cp->fcoe_crc32 = cpu_to_le32(~crc);
+ if (skb_is_nonlinear(skb)) {
+ kunmap_atomic(cp);
+ cp = NULL;
+ }
+
+
+ /* adjust skb network/transport offsets to match mac/fcoe/port */
+ skb_push(skb, elen + hlen);
+ skb_reset_mac_header(skb);
+ skb_reset_network_header(skb);
+ skb->mac_len = elen;
+ skb->protocol = htons(ETH_P_FCOE);
+
+ /*
+ * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
+ * for FIP/FCoE traffic.
+ */
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
+
+ /* fill up mac and fcoe headers */
+ eh = eth_hdr(skb);
+ eh->h_proto = htons(ETH_P_FCOE);
+ if (qedf->ctlr.map_dest)
+ fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
+ else
+ /* insert GW address */
+ ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
+
+ /* Set the source MAC address */
+ ether_addr_copy(eh->h_source, qedf->data_src_addr);
+
+ hp = (struct fcoe_hdr *)(eh + 1);
+ memset(hp, 0, sizeof(*hp));
+ if (FC_FCOE_VER)
+ FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
+ hp->fcoe_sof = sof;
+
+ /*update tx stats */
+ this_cpu_inc(lport->stats->TxFrames);
+ this_cpu_add(lport->stats->TxWords, wlen);
+
+ /* Get VLAN ID from skb for printing purposes */
+ __vlan_hwaccel_get_tag(skb, &vlan_tci);
+
+ /* send down to lld */
+ fr_dev(fp) = lport;
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
+ "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
+ ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
+ vlan_tci);
+ if (qedf_dump_frames)
+ print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
+ 1, skb->data, skb->len, false);
+ rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
+ if (rc) {
+ QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
+ kfree_skb(skb);
+ return rc;
+ }
+
+ return 0;
+}
+
+static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
+{
+ int rval = 0;
+ u32 *pbl;
+ dma_addr_t page;
+ int num_pages;
+
+ /* Calculate appropriate queue and PBL sizes */
+ fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
+ fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
+ fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
+ sizeof(void *);
+ fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
+
+ fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
+ &fcport->sq_dma, GFP_KERNEL);
+ if (!fcport->sq) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
+ rval = 1;
+ goto out;
+ }
+
+ fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
+ fcport->sq_pbl_size,
+ &fcport->sq_pbl_dma, GFP_KERNEL);
+ if (!fcport->sq_pbl) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
+ rval = 1;
+ goto out_free_sq;
+ }
+
+ /* Create PBL */
+ num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
+ page = fcport->sq_dma;
+ pbl = (u32 *)fcport->sq_pbl;
+
+ while (num_pages--) {
+ *pbl = U64_LO(page);
+ pbl++;
+ *pbl = U64_HI(page);
+ pbl++;
+ page += QEDF_PAGE_SIZE;
+ }
+
+ return rval;
+
+out_free_sq:
+ dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
+ fcport->sq_dma);
+out:
+ return rval;
+}
+
+static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
+{
+ if (fcport->sq_pbl)
+ dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
+ fcport->sq_pbl, fcport->sq_pbl_dma);
+ if (fcport->sq)
+ dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
+ fcport->sq, fcport->sq_dma);
+}
+
+static int qedf_offload_connection(struct qedf_ctx *qedf,
+ struct qedf_rport *fcport)
+{
+ struct qed_fcoe_params_offload conn_info;
+ u32 port_id;
+ int rval;
+ uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
+ "portid=%06x.\n", fcport->rdata->ids.port_id);
+ rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
+ &fcport->fw_cid, &fcport->p_doorbell);
+ if (rval) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
+ "for portid=%06x.\n", fcport->rdata->ids.port_id);
+ rval = 1; /* For some reason qed returns 0 on failure here */
+ goto out;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
+ "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
+ fcport->fw_cid, fcport->handle);
+
+ memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
+
+ /* Fill in the offload connection info */
+ conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
+
+ conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
+ conn_info.sq_next_page_addr =
+ (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
+
+ /* Need to use our FCoE MAC for the offload session */
+ ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
+
+ ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
+
+ conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
+ conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
+ conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
+ conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
+
+ /* Set VLAN data */
+ conn_info.vlan_tag = qedf->vlan_id <<
+ FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
+ conn_info.vlan_tag |=
+ qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
+ conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
+ FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
+
+ /* Set host port source id */
+ port_id = fc_host_port_id(qedf->lport->host);
+ fcport->sid = port_id;
+ conn_info.s_id.addr_hi = (port_id & 0x000000FF);
+ conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
+ conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
+
+ conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
+
+ /* Set remote port destination id */
+ port_id = fcport->rdata->rport->port_id;
+ conn_info.d_id.addr_hi = (port_id & 0x000000FF);
+ conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
+ conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
+
+ conn_info.def_q_idx = 0; /* Default index for send queue? */
+
+ /* Set FC-TAPE specific flags if needed */
+ if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
+ "Enable CONF, REC for portid=%06x.\n",
+ fcport->rdata->ids.port_id);
+ conn_info.flags |= 1 <<
+ FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
+ conn_info.flags |=
+ ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
+ FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
+ }
+
+ rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
+ if (rval) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
+ "for portid=%06x.\n", fcport->rdata->ids.port_id);
+ goto out_free_conn;
+ } else
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
+ "succeeded portid=%06x total_sqe=%d.\n",
+ fcport->rdata->ids.port_id, total_sqe);
+
+ spin_lock_init(&fcport->rport_lock);
+ atomic_set(&fcport->free_sqes, total_sqe);
+ return 0;
+out_free_conn:
+ qed_ops->release_conn(qedf->cdev, fcport->handle);
+out:
+ return rval;
+}
+
+#define QEDF_TERM_BUFF_SIZE 10
+static void qedf_upload_connection(struct qedf_ctx *qedf,
+ struct qedf_rport *fcport)
+{
+ void *term_params;
+ dma_addr_t term_params_dma;
+
+ /* Term params needs to be a DMA coherent buffer as qed shared the
+ * physical DMA address with the firmware. The buffer may be used in
+ * the receive path so we may eventually have to move this.
+ */
+ term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
+ &term_params_dma, GFP_KERNEL);
+ if (!term_params)
+ return;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
+ "port_id=%06x.\n", fcport->rdata->ids.port_id);
+
+ qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
+ qed_ops->release_conn(qedf->cdev, fcport->handle);
+
+ dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
+ term_params_dma);
+}
+
+static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
+ struct qedf_rport *fcport)
+{
+ struct fc_rport_priv *rdata = fcport->rdata;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
+ fcport->rdata->ids.port_id);
+
+ /* Flush any remaining i/o's before we upload the connection */
+ qedf_flush_active_ios(fcport, -1);
+
+ if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
+ qedf_upload_connection(qedf, fcport);
+ qedf_free_sq(qedf, fcport);
+ fcport->rdata = NULL;
+ fcport->qedf = NULL;
+ kref_put(&rdata->kref, fc_rport_destroy);
+}
+
+/*
+ * This event_callback is called after successful completion of libfc
+ * initiated target login. qedf can proceed with initiating the session
+ * establishment.
+ */
+static void qedf_rport_event_handler(struct fc_lport *lport,
+ struct fc_rport_priv *rdata,
+ enum fc_rport_event event)
+{
+ struct qedf_ctx *qedf = lport_priv(lport);
+ struct fc_rport *rport = rdata->rport;
+ struct fc_rport_libfc_priv *rp;
+ struct qedf_rport *fcport;
+ u32 port_id;
+ int rval;
+ unsigned long flags;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
+ "port_id = 0x%x\n", event, rdata->ids.port_id);
+
+ switch (event) {
+ case RPORT_EV_READY:
+ if (!rport) {
+ QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
+ break;
+ }
+
+ rp = rport->dd_data;
+ fcport = (struct qedf_rport *)&rp[1];
+ fcport->qedf = qedf;
+
+ if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
+ "portid=0x%x as max number of offloaded sessions "
+ "reached.\n", rdata->ids.port_id);
+ return;
+ }
+
+ /*
+ * Don't try to offload the session again. Can happen when we
+ * get an ADISC
+ */
+ if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Session already "
+ "offloaded, portid=0x%x.\n",
+ rdata->ids.port_id);
+ return;
+ }
+
+ if (rport->port_id == FC_FID_DIR_SERV) {
+ /*
+ * qedf_rport structure doesn't exist for
+ * directory server.
+ * We should not come here, as lport will
+ * take care of fabric login
+ */
+ QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
+ "exist for dir server port_id=%x\n",
+ rdata->ids.port_id);
+ break;
+ }
+
+ if (rdata->spp_type != FC_TYPE_FCP) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Not offloading since spp type isn't FCP\n");
+ break;
+ }
+ if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Not FCP target so not offloading\n");
+ break;
+ }
+
+ /* Initial reference held on entry, so this can't fail */
+ kref_get(&rdata->kref);
+ fcport->rdata = rdata;
+ fcport->rport = rport;
+
+ rval = qedf_alloc_sq(qedf, fcport);
+ if (rval) {
+ qedf_cleanup_fcport(qedf, fcport);
+ break;
+ }
+
+ /* Set device type */
+ if (rdata->flags & FC_RP_FLAGS_RETRY &&
+ rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
+ !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
+ fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "portid=%06x is a TAPE device.\n",
+ rdata->ids.port_id);
+ } else {
+ fcport->dev_type = QEDF_RPORT_TYPE_DISK;
+ }
+
+ rval = qedf_offload_connection(qedf, fcport);
+ if (rval) {
+ qedf_cleanup_fcport(qedf, fcport);
+ break;
+ }
+
+ /* Add fcport to list of qedf_ctx list of offloaded ports */
+ spin_lock_irqsave(&qedf->hba_lock, flags);
+ list_add_rcu(&fcport->peers, &qedf->fcports);
+ spin_unlock_irqrestore(&qedf->hba_lock, flags);
+
+ /*
+ * Set the session ready bit to let everyone know that this
+ * connection is ready for I/O
+ */
+ set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
+ atomic_inc(&qedf->num_offloads);
+
+ break;
+ case RPORT_EV_LOGO:
+ case RPORT_EV_FAILED:
+ case RPORT_EV_STOP:
+ port_id = rdata->ids.port_id;
+ if (port_id == FC_FID_DIR_SERV)
+ break;
+
+ if (rdata->spp_type != FC_TYPE_FCP) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "No action since spp type isn't FCP\n");
+ break;
+ }
+ if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Not FCP target so no action\n");
+ break;
+ }
+
+ if (!rport) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "port_id=%x - rport notcreated Yet!!\n", port_id);
+ break;
+ }
+ rp = rport->dd_data;
+ /*
+ * Perform session upload. Note that rdata->peers is already
+ * removed from disc->rports list before we get this event.
+ */
+ fcport = (struct qedf_rport *)&rp[1];
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+ /* Only free this fcport if it is offloaded already */
+ if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
+ !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
+ &fcport->flags)) {
+ set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
+ &fcport->flags);
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+ qedf_cleanup_fcport(qedf, fcport);
+ /*
+ * Remove fcport to list of qedf_ctx list of offloaded
+ * ports
+ */
+ spin_lock_irqsave(&qedf->hba_lock, flags);
+ list_del_rcu(&fcport->peers);
+ spin_unlock_irqrestore(&qedf->hba_lock, flags);
+
+ clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
+ &fcport->flags);
+ atomic_dec(&qedf->num_offloads);
+ } else {
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+ }
+ break;
+
+ case RPORT_EV_NONE:
+ break;
+ }
+}
+
+static void qedf_abort_io(struct fc_lport *lport)
+{
+ /* NO-OP but need to fill in the template */
+}
+
+static void qedf_fcp_cleanup(struct fc_lport *lport)
+{
+ /*
+ * NO-OP but need to fill in template to prevent a NULL
+ * function pointer dereference during link down. I/Os
+ * will be flushed when port is uploaded.
+ */
+}
+
+static struct libfc_function_template qedf_lport_template = {
+ .frame_send = qedf_xmit,
+ .fcp_abort_io = qedf_abort_io,
+ .fcp_cleanup = qedf_fcp_cleanup,
+ .rport_event_callback = qedf_rport_event_handler,
+ .elsct_send = qedf_elsct_send,
+};
+
+static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
+{
+ fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
+
+ qedf->ctlr.send = qedf_fip_send;
+ qedf->ctlr.get_src_addr = qedf_get_src_mac;
+ ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
+}
+
+static void qedf_setup_fdmi(struct qedf_ctx *qedf)
+{
+ struct fc_lport *lport = qedf->lport;
+ u8 buf[8];
+ int pos;
+ uint32_t i;
+
+ /*
+ * fdmi_enabled needs to be set for libfc
+ * to execute FDMI registration
+ */
+ lport->fdmi_enabled = 1;
+
+ /*
+ * Setup the necessary fc_host attributes to that will be used to fill
+ * in the FDMI information.
+ */
+
+ /* Get the PCI-e Device Serial Number Capability */
+ pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
+ if (pos) {
+ pos += 4;
+ for (i = 0; i < 8; i++)
+ pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
+
+ snprintf(fc_host_serial_number(lport->host),
+ FC_SERIAL_NUMBER_SIZE,
+ "%02X%02X%02X%02X%02X%02X%02X%02X",
+ buf[7], buf[6], buf[5], buf[4],
+ buf[3], buf[2], buf[1], buf[0]);
+ } else
+ snprintf(fc_host_serial_number(lport->host),
+ FC_SERIAL_NUMBER_SIZE, "Unknown");
+
+ snprintf(fc_host_manufacturer(lport->host),
+ FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc.");
+
+ if (qedf->pdev->device == QL45xxx) {
+ snprintf(fc_host_model(lport->host),
+ FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx");
+
+ snprintf(fc_host_model_description(lport->host),
+ FC_SYMBOLIC_NAME_SIZE, "%s",
+ "Marvell FastLinQ QL45xxx FCoE Adapter");
+ }
+
+ if (qedf->pdev->device == QL41xxx) {
+ snprintf(fc_host_model(lport->host),
+ FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx");
+
+ snprintf(fc_host_model_description(lport->host),
+ FC_SYMBOLIC_NAME_SIZE, "%s",
+ "Marvell FastLinQ QL41xxx FCoE Adapter");
+ }
+
+ snprintf(fc_host_hardware_version(lport->host),
+ FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision);
+
+ snprintf(fc_host_driver_version(lport->host),
+ FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION);
+
+ snprintf(fc_host_firmware_version(lport->host),
+ FC_VERSION_STRING_SIZE, "%d.%d.%d.%d",
+ FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
+ FW_ENGINEERING_VERSION);
+
+ snprintf(fc_host_vendor_identifier(lport->host),
+ FC_VENDOR_IDENTIFIER, "%s", "Marvell");
+
+}
+
+static int qedf_lport_setup(struct qedf_ctx *qedf)
+{
+ struct fc_lport *lport = qedf->lport;
+
+ lport->link_up = 0;
+ lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
+ lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
+ lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
+ FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
+ lport->boot_time = jiffies;
+ lport->e_d_tov = 2 * 1000;
+ lport->r_a_tov = 10 * 1000;
+
+ /* Set NPIV support */
+ lport->does_npiv = 1;
+ fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
+
+ fc_set_wwnn(lport, qedf->wwnn);
+ fc_set_wwpn(lport, qedf->wwpn);
+
+ if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "fcoe_libfc_config failed.\n");
+ return -ENOMEM;
+ }
+
+ /* Allocate the exchange manager */
+ fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
+ 0xfffe, NULL);
+
+ if (fc_lport_init_stats(lport))
+ return -ENOMEM;
+
+ /* Finish lport config */
+ fc_lport_config(lport);
+
+ /* Set max frame size */
+ fc_set_mfs(lport, QEDF_MFS);
+ fc_host_maxframe_size(lport->host) = lport->mfs;
+
+ /* Set default dev_loss_tmo based on module parameter */
+ fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
+
+ /* Set symbolic node name */
+ if (qedf->pdev->device == QL45xxx)
+ snprintf(fc_host_symbolic_name(lport->host), 256,
+ "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
+
+ if (qedf->pdev->device == QL41xxx)
+ snprintf(fc_host_symbolic_name(lport->host), 256,
+ "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
+
+ qedf_setup_fdmi(qedf);
+
+ return 0;
+}
+
+/*
+ * NPIV functions
+ */
+
+static int qedf_vport_libfc_config(struct fc_vport *vport,
+ struct fc_lport *lport)
+{
+ lport->link_up = 0;
+ lport->qfull = 0;
+ lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
+ lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
+ lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
+ FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
+ lport->boot_time = jiffies;
+ lport->e_d_tov = 2 * 1000;
+ lport->r_a_tov = 10 * 1000;
+ lport->does_npiv = 1; /* Temporary until we add NPIV support */
+
+ /* Allocate stats for vport */
+ if (fc_lport_init_stats(lport))
+ return -ENOMEM;
+
+ /* Finish lport config */
+ fc_lport_config(lport);
+
+ /* offload related configuration */
+ lport->crc_offload = 0;
+ lport->seq_offload = 0;
+ lport->lro_enabled = 0;
+ lport->lro_xid = 0;
+ lport->lso_max = 0;
+
+ return 0;
+}
+
+static int qedf_vport_create(struct fc_vport *vport, bool disabled)
+{
+ struct Scsi_Host *shost = vport_to_shost(vport);
+ struct fc_lport *n_port = shost_priv(shost);
+ struct fc_lport *vn_port;
+ struct qedf_ctx *base_qedf = lport_priv(n_port);
+ struct qedf_ctx *vport_qedf;
+
+ char buf[32];
+ int rc = 0;
+
+ rc = fcoe_validate_vport_create(vport);
+ if (rc) {
+ fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
+ QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
+ "WWPN (0x%s) already exists.\n", buf);
+ return rc;
+ }
+
+ if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
+ QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
+ "because link is not up.\n");
+ return -EIO;
+ }
+
+ vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
+ if (!vn_port) {
+ QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
+ "for vport.\n");
+ return -ENOMEM;
+ }
+
+ fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
+ QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
+ buf);
+
+ /* Copy some fields from base_qedf */
+ vport_qedf = lport_priv(vn_port);
+ memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
+
+ /* Set qedf data specific to this vport */
+ vport_qedf->lport = vn_port;
+ /* Use same hba_lock as base_qedf */
+ vport_qedf->hba_lock = base_qedf->hba_lock;
+ vport_qedf->pdev = base_qedf->pdev;
+ vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
+ init_completion(&vport_qedf->flogi_compl);
+ INIT_LIST_HEAD(&vport_qedf->fcports);
+ INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work);
+
+ rc = qedf_vport_libfc_config(vport, vn_port);
+ if (rc) {
+ QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
+ "for lport stats.\n");
+ goto err;
+ }
+
+ fc_set_wwnn(vn_port, vport->node_name);
+ fc_set_wwpn(vn_port, vport->port_name);
+ vport_qedf->wwnn = vn_port->wwnn;
+ vport_qedf->wwpn = vn_port->wwpn;
+
+ vn_port->host->transportt = qedf_fc_vport_transport_template;
+ vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
+ vn_port->host->max_lun = qedf_max_lun;
+ vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
+ vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
+ vn_port->host->max_id = QEDF_MAX_SESSIONS;
+
+ rc = scsi_add_host(vn_port->host, &vport->dev);
+ if (rc) {
+ QEDF_WARN(&base_qedf->dbg_ctx,
+ "Error adding Scsi_Host rc=0x%x.\n", rc);
+ goto err;
+ }
+
+ /* Set default dev_loss_tmo based on module parameter */
+ fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
+
+ /* Init libfc stuffs */
+ memcpy(&vn_port->tt, &qedf_lport_template,
+ sizeof(qedf_lport_template));
+ fc_exch_init(vn_port);
+ fc_elsct_init(vn_port);
+ fc_lport_init(vn_port);
+ fc_disc_init(vn_port);
+ fc_disc_config(vn_port, vn_port);
+
+
+ /* Allocate the exchange manager */
+ shost = vport_to_shost(vport);
+ n_port = shost_priv(shost);
+ fc_exch_mgr_list_clone(n_port, vn_port);
+
+ /* Set max frame size */
+ fc_set_mfs(vn_port, QEDF_MFS);
+
+ fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
+
+ if (disabled) {
+ fc_vport_set_state(vport, FC_VPORT_DISABLED);
+ } else {
+ vn_port->boot_time = jiffies;
+ fc_fabric_login(vn_port);
+ fc_vport_setlink(vn_port);
+ }
+
+ /* Set symbolic node name */
+ if (base_qedf->pdev->device == QL45xxx)
+ snprintf(fc_host_symbolic_name(vn_port->host), 256,
+ "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
+
+ if (base_qedf->pdev->device == QL41xxx)
+ snprintf(fc_host_symbolic_name(vn_port->host), 256,
+ "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
+
+ /* Set supported speed */
+ fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds;
+
+ /* Set speed */
+ vn_port->link_speed = n_port->link_speed;
+
+ /* Set port type */
+ fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV;
+
+ /* Set maxframe size */
+ fc_host_maxframe_size(vn_port->host) = n_port->mfs;
+
+ QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
+ vn_port);
+
+ /* Set up debug context for vport */
+ vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
+ vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
+
+ return 0;
+
+err:
+ scsi_host_put(vn_port->host);
+ return rc;
+}
+
+static int qedf_vport_destroy(struct fc_vport *vport)
+{
+ struct Scsi_Host *shost = vport_to_shost(vport);
+ struct fc_lport *n_port = shost_priv(shost);
+ struct fc_lport *vn_port = vport->dd_data;
+ struct qedf_ctx *qedf = lport_priv(vn_port);
+
+ if (!qedf) {
+ QEDF_ERR(NULL, "qedf is NULL.\n");
+ goto out;
+ }
+
+ /* Set unloading bit on vport qedf_ctx to prevent more I/O */
+ set_bit(QEDF_UNLOADING, &qedf->flags);
+
+ mutex_lock(&n_port->lp_mutex);
+ list_del(&vn_port->list);
+ mutex_unlock(&n_port->lp_mutex);
+
+ fc_fabric_logoff(vn_port);
+ fc_lport_destroy(vn_port);
+
+ /* Detach from scsi-ml */
+ fc_remove_host(vn_port->host);
+ scsi_remove_host(vn_port->host);
+
+ /*
+ * Only try to release the exchange manager if the vn_port
+ * configuration is complete.
+ */
+ if (vn_port->state == LPORT_ST_READY)
+ fc_exch_mgr_free(vn_port);
+
+ /* Free memory used by statistical counters */
+ fc_lport_free_stats(vn_port);
+
+ /* Release Scsi_Host */
+ scsi_host_put(vn_port->host);
+
+out:
+ return 0;
+}
+
+static int qedf_vport_disable(struct fc_vport *vport, bool disable)
+{
+ struct fc_lport *lport = vport->dd_data;
+
+ if (disable) {
+ fc_vport_set_state(vport, FC_VPORT_DISABLED);
+ fc_fabric_logoff(lport);
+ } else {
+ lport->boot_time = jiffies;
+ fc_fabric_login(lport);
+ fc_vport_setlink(lport);
+ }
+ return 0;
+}
+
+/*
+ * During removal we need to wait for all the vports associated with a port
+ * to be destroyed so we avoid a race condition where libfc is still trying
+ * to reap vports while the driver remove function has already reaped the
+ * driver contexts associated with the physical port.
+ */
+static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
+{
+ struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
+ "Entered.\n");
+ while (fc_host->npiv_vports_inuse > 0) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
+ "Waiting for all vports to be reaped.\n");
+ msleep(1000);
+ }
+}
+
+/**
+ * qedf_fcoe_reset - Resets the fcoe
+ *
+ * @shost: shost the reset is from
+ *
+ * Returns: always 0
+ */
+static int qedf_fcoe_reset(struct Scsi_Host *shost)
+{
+ struct fc_lport *lport = shost_priv(shost);
+
+ qedf_ctx_soft_reset(lport);
+ return 0;
+}
+
+static void qedf_get_host_port_id(struct Scsi_Host *shost)
+{
+ struct fc_lport *lport = shost_priv(shost);
+
+ fc_host_port_id(shost) = lport->port_id;
+}
+
+static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
+ *shost)
+{
+ struct fc_host_statistics *qedf_stats;
+ struct fc_lport *lport = shost_priv(shost);
+ struct qedf_ctx *qedf = lport_priv(lport);
+ struct qed_fcoe_stats *fw_fcoe_stats;
+
+ qedf_stats = fc_get_host_stats(shost);
+
+ /* We don't collect offload stats for specific NPIV ports */
+ if (lport->vport)
+ goto out;
+
+ fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
+ if (!fw_fcoe_stats) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
+ "fw_fcoe_stats.\n");
+ goto out;
+ }
+
+ mutex_lock(&qedf->stats_mutex);
+
+ /* Query firmware for offload stats */
+ qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
+
+ /*
+ * The expectation is that we add our offload stats to the stats
+ * being maintained by libfc each time the fc_get_host_status callback
+ * is invoked. The additions are not carried over for each call to
+ * the fc_get_host_stats callback.
+ */
+ qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
+ fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
+ fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
+ qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
+ fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
+ fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
+ qedf_stats->fcp_input_megabytes +=
+ do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
+ qedf_stats->fcp_output_megabytes +=
+ do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
+ qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
+ qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
+ qedf_stats->invalid_crc_count +=
+ fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
+ qedf_stats->dumped_frames =
+ fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
+ qedf_stats->error_frames +=
+ fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
+ qedf_stats->fcp_input_requests += qedf->input_requests;
+ qedf_stats->fcp_output_requests += qedf->output_requests;
+ qedf_stats->fcp_control_requests += qedf->control_requests;
+ qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
+ qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
+
+ mutex_unlock(&qedf->stats_mutex);
+ kfree(fw_fcoe_stats);
+out:
+ return qedf_stats;
+}
+
+static struct fc_function_template qedf_fc_transport_fn = {
+ .show_host_node_name = 1,
+ .show_host_port_name = 1,
+ .show_host_supported_classes = 1,
+ .show_host_supported_fc4s = 1,
+ .show_host_active_fc4s = 1,
+ .show_host_maxframe_size = 1,
+
+ .get_host_port_id = qedf_get_host_port_id,
+ .show_host_port_id = 1,
+ .show_host_supported_speeds = 1,
+ .get_host_speed = fc_get_host_speed,
+ .show_host_speed = 1,
+ .show_host_port_type = 1,
+ .get_host_port_state = fc_get_host_port_state,
+ .show_host_port_state = 1,
+ .show_host_symbolic_name = 1,
+
+ /*
+ * Tell FC transport to allocate enough space to store the backpointer
+ * for the associate qedf_rport struct.
+ */
+ .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
+ sizeof(struct qedf_rport)),
+ .show_rport_maxframe_size = 1,
+ .show_rport_supported_classes = 1,
+ .show_host_fabric_name = 1,
+ .show_starget_node_name = 1,
+ .show_starget_port_name = 1,
+ .show_starget_port_id = 1,
+ .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
+ .show_rport_dev_loss_tmo = 1,
+ .get_fc_host_stats = qedf_fc_get_host_stats,
+ .issue_fc_host_lip = qedf_fcoe_reset,
+ .vport_create = qedf_vport_create,
+ .vport_delete = qedf_vport_destroy,
+ .vport_disable = qedf_vport_disable,
+ .bsg_request = fc_lport_bsg_request,
+};
+
+static struct fc_function_template qedf_fc_vport_transport_fn = {
+ .show_host_node_name = 1,
+ .show_host_port_name = 1,
+ .show_host_supported_classes = 1,
+ .show_host_supported_fc4s = 1,
+ .show_host_active_fc4s = 1,
+ .show_host_maxframe_size = 1,
+ .show_host_port_id = 1,
+ .show_host_supported_speeds = 1,
+ .get_host_speed = fc_get_host_speed,
+ .show_host_speed = 1,
+ .show_host_port_type = 1,
+ .get_host_port_state = fc_get_host_port_state,
+ .show_host_port_state = 1,
+ .show_host_symbolic_name = 1,
+ .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
+ sizeof(struct qedf_rport)),
+ .show_rport_maxframe_size = 1,
+ .show_rport_supported_classes = 1,
+ .show_host_fabric_name = 1,
+ .show_starget_node_name = 1,
+ .show_starget_port_name = 1,
+ .show_starget_port_id = 1,
+ .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
+ .show_rport_dev_loss_tmo = 1,
+ .get_fc_host_stats = fc_get_host_stats,
+ .issue_fc_host_lip = qedf_fcoe_reset,
+ .bsg_request = fc_lport_bsg_request,
+};
+
+static bool qedf_fp_has_work(struct qedf_fastpath *fp)
+{
+ struct qedf_ctx *qedf = fp->qedf;
+ struct global_queue *que;
+ struct qed_sb_info *sb_info = fp->sb_info;
+ struct status_block *sb = sb_info->sb_virt;
+ u16 prod_idx;
+
+ /* Get the pointer to the global CQ this completion is on */
+ que = qedf->global_queues[fp->sb_id];
+
+ /* Be sure all responses have been written to PI */
+ rmb();
+
+ /* Get the current firmware producer index */
+ prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
+
+ return (que->cq_prod_idx != prod_idx);
+}
+
+/*
+ * Interrupt handler code.
+ */
+
+/* Process completion queue and copy CQE contents for deferred processesing
+ *
+ * Return true if we should wake the I/O thread, false if not.
+ */
+static bool qedf_process_completions(struct qedf_fastpath *fp)
+{
+ struct qedf_ctx *qedf = fp->qedf;
+ struct qed_sb_info *sb_info = fp->sb_info;
+ struct status_block *sb = sb_info->sb_virt;
+ struct global_queue *que;
+ u16 prod_idx;
+ struct fcoe_cqe *cqe;
+ struct qedf_io_work *io_work;
+ int num_handled = 0;
+ unsigned int cpu;
+ struct qedf_ioreq *io_req = NULL;
+ u16 xid;
+ u16 new_cqes;
+ u32 comp_type;
+
+ /* Get the current firmware producer index */
+ prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
+
+ /* Get the pointer to the global CQ this completion is on */
+ que = qedf->global_queues[fp->sb_id];
+
+ /* Calculate the amount of new elements since last processing */
+ new_cqes = (prod_idx >= que->cq_prod_idx) ?
+ (prod_idx - que->cq_prod_idx) :
+ 0x10000 - que->cq_prod_idx + prod_idx;
+
+ /* Save producer index */
+ que->cq_prod_idx = prod_idx;
+
+ while (new_cqes) {
+ fp->completions++;
+ num_handled++;
+ cqe = &que->cq[que->cq_cons_idx];
+
+ comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
+ FCOE_CQE_CQE_TYPE_MASK;
+
+ /*
+ * Process unsolicited CQEs directly in the interrupt handler
+ * sine we need the fastpath ID
+ */
+ if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
+ "Unsolicated CQE.\n");
+ qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
+ /*
+ * Don't add a work list item. Increment consumer
+ * consumer index and move on.
+ */
+ goto inc_idx;
+ }
+
+ xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
+ io_req = &qedf->cmd_mgr->cmds[xid];
+
+ /*
+ * Figure out which percpu thread we should queue this I/O
+ * on.
+ */
+ if (!io_req)
+ /* If there is not io_req assocated with this CQE
+ * just queue it on CPU 0
+ */
+ cpu = 0;
+ else {
+ cpu = io_req->cpu;
+ io_req->int_cpu = smp_processor_id();
+ }
+
+ io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
+ if (!io_work) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
+ "work for I/O completion.\n");
+ continue;
+ }
+ memset(io_work, 0, sizeof(struct qedf_io_work));
+
+ INIT_WORK(&io_work->work, qedf_fp_io_handler);
+
+ /* Copy contents of CQE for deferred processing */
+ memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
+
+ io_work->qedf = fp->qedf;
+ io_work->fp = NULL; /* Only used for unsolicited frames */
+
+ queue_work_on(cpu, qedf_io_wq, &io_work->work);
+
+inc_idx:
+ que->cq_cons_idx++;
+ if (que->cq_cons_idx == fp->cq_num_entries)
+ que->cq_cons_idx = 0;
+ new_cqes--;
+ }
+
+ return true;
+}
+
+
+/* MSI-X fastpath handler code */
+static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
+{
+ struct qedf_fastpath *fp = dev_id;
+
+ if (!fp) {
+ QEDF_ERR(NULL, "fp is null.\n");
+ return IRQ_HANDLED;
+ }
+ if (!fp->sb_info) {
+ QEDF_ERR(NULL, "fp->sb_info in null.");
+ return IRQ_HANDLED;
+ }
+
+ /*
+ * Disable interrupts for this status block while we process new
+ * completions
+ */
+ qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
+
+ while (1) {
+ qedf_process_completions(fp);
+
+ if (qedf_fp_has_work(fp) == 0) {
+ /* Update the sb information */
+ qed_sb_update_sb_idx(fp->sb_info);
+
+ /* Check for more work */
+ rmb();
+
+ if (qedf_fp_has_work(fp) == 0) {
+ /* Re-enable interrupts */
+ qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
+ return IRQ_HANDLED;
+ }
+ }
+ }
+
+ /* Do we ever want to break out of above loop? */
+ return IRQ_HANDLED;
+}
+
+/* simd handler for MSI/INTa */
+static void qedf_simd_int_handler(void *cookie)
+{
+ /* Cookie is qedf_ctx struct */
+ struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
+
+ QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
+}
+
+#define QEDF_SIMD_HANDLER_NUM 0
+static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
+{
+ int i;
+ u16 vector_idx = 0;
+ u32 vector;
+
+ if (qedf->int_info.msix_cnt) {
+ for (i = 0; i < qedf->int_info.used_cnt; i++) {
+ vector_idx = i * qedf->dev_info.common.num_hwfns +
+ qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Freeing IRQ #%d vector_idx=%d.\n",
+ i, vector_idx);
+ vector = qedf->int_info.msix[vector_idx].vector;
+ synchronize_irq(vector);
+ irq_set_affinity_hint(vector, NULL);
+ irq_set_affinity_notifier(vector, NULL);
+ free_irq(vector, &qedf->fp_array[i]);
+ }
+ } else
+ qed_ops->common->simd_handler_clean(qedf->cdev,
+ QEDF_SIMD_HANDLER_NUM);
+
+ qedf->int_info.used_cnt = 0;
+ qed_ops->common->set_fp_int(qedf->cdev, 0);
+}
+
+static int qedf_request_msix_irq(struct qedf_ctx *qedf)
+{
+ int i, rc, cpu;
+ u16 vector_idx = 0;
+ u32 vector;
+
+ cpu = cpumask_first(cpu_online_mask);
+ for (i = 0; i < qedf->num_queues; i++) {
+ vector_idx = i * qedf->dev_info.common.num_hwfns +
+ qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "Requesting IRQ #%d vector_idx=%d.\n",
+ i, vector_idx);
+ vector = qedf->int_info.msix[vector_idx].vector;
+ rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
+ &qedf->fp_array[i]);
+
+ if (rc) {
+ QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
+ qedf_sync_free_irqs(qedf);
+ return rc;
+ }
+
+ qedf->int_info.used_cnt++;
+ rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
+ cpu = cpumask_next(cpu, cpu_online_mask);
+ }
+
+ return 0;
+}
+
+static int qedf_setup_int(struct qedf_ctx *qedf)
+{
+ int rc = 0;
+
+ /*
+ * Learn interrupt configuration
+ */
+ rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
+ if (rc <= 0)
+ return 0;
+
+ rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
+ if (rc)
+ return 0;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
+ "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
+ num_online_cpus());
+
+ if (qedf->int_info.msix_cnt)
+ return qedf_request_msix_irq(qedf);
+
+ qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
+ QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
+ qedf->int_info.used_cnt = 1;
+
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Cannot load driver due to a lack of MSI-X vectors.\n");
+ return -EINVAL;
+}
+
+/* Main function for libfc frame reception */
+static void qedf_recv_frame(struct qedf_ctx *qedf,
+ struct sk_buff *skb)
+{
+ u32 fr_len;
+ struct fc_lport *lport;
+ struct fc_frame_header *fh;
+ struct fcoe_crc_eof crc_eof;
+ struct fc_frame *fp;
+ u8 *mac = NULL;
+ u8 *dest_mac = NULL;
+ struct fcoe_hdr *hp;
+ struct qedf_rport *fcport;
+ struct fc_lport *vn_port;
+ u32 f_ctl;
+
+ lport = qedf->lport;
+ if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
+ QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
+ kfree_skb(skb);
+ return;
+ }
+
+ if (skb_is_nonlinear(skb))
+ skb_linearize(skb);
+ mac = eth_hdr(skb)->h_source;
+ dest_mac = eth_hdr(skb)->h_dest;
+
+ /* Pull the header */
+ hp = (struct fcoe_hdr *)skb->data;
+ fh = (struct fc_frame_header *) skb_transport_header(skb);
+ skb_pull(skb, sizeof(struct fcoe_hdr));
+ fr_len = skb->len - sizeof(struct fcoe_crc_eof);
+
+ fp = (struct fc_frame *)skb;
+ fc_frame_init(fp);
+ fr_dev(fp) = lport;
+ fr_sof(fp) = hp->fcoe_sof;
+ if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
+ QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
+ kfree_skb(skb);
+ return;
+ }
+ fr_eof(fp) = crc_eof.fcoe_eof;
+ fr_crc(fp) = crc_eof.fcoe_crc32;
+ if (pskb_trim(skb, fr_len)) {
+ QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
+ kfree_skb(skb);
+ return;
+ }
+
+ fh = fc_frame_header_get(fp);
+
+ /*
+ * Invalid frame filters.
+ */
+
+ if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
+ fh->fh_type == FC_TYPE_FCP) {
+ /* Drop FCP data. We dont this in L2 path */
+ kfree_skb(skb);
+ return;
+ }
+ if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
+ fh->fh_type == FC_TYPE_ELS) {
+ switch (fc_frame_payload_op(fp)) {
+ case ELS_LOGO:
+ if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
+ /* drop non-FIP LOGO */
+ kfree_skb(skb);
+ return;
+ }
+ break;
+ }
+ }
+
+ if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
+ /* Drop incoming ABTS */
+ kfree_skb(skb);
+ return;
+ }
+
+ if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
+ "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
+ kfree_skb(skb);
+ return;
+ }
+
+ if (qedf->ctlr.state) {
+ if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
+ "Wrong source address: mac:%pM dest_addr:%pM.\n",
+ mac, qedf->ctlr.dest_addr);
+ kfree_skb(skb);
+ return;
+ }
+ }
+
+ vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
+
+ /*
+ * If the destination ID from the frame header does not match what we
+ * have on record for lport and the search for a NPIV port came up
+ * empty then this is not addressed to our port so simply drop it.
+ */
+ if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
+ "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
+ lport->port_id, ntoh24(fh->fh_d_id));
+ kfree_skb(skb);
+ return;
+ }
+
+ f_ctl = ntoh24(fh->fh_f_ctl);
+ if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
+ (f_ctl & FC_FC_EX_CTX)) {
+ /* Drop incoming ABTS response that has both SEQ/EX CTX set */
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
+ "Dropping ABTS response as both SEQ/EX CTX set.\n");
+ kfree_skb(skb);
+ return;
+ }
+
+ /*
+ * If a connection is uploading, drop incoming FCoE frames as there
+ * is a small window where we could try to return a frame while libfc
+ * is trying to clean things up.
+ */
+
+ /* Get fcport associated with d_id if it exists */
+ fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
+
+ if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
+ &fcport->flags)) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
+ "Connection uploading, dropping fp=%p.\n", fp);
+ kfree_skb(skb);
+ return;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
+ "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
+ ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
+ fh->fh_type);
+ if (qedf_dump_frames)
+ print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
+ 1, skb->data, skb->len, false);
+ fc_exch_recv(lport, fp);
+}
+
+static void qedf_ll2_process_skb(struct work_struct *work)
+{
+ struct qedf_skb_work *skb_work =
+ container_of(work, struct qedf_skb_work, work);
+ struct qedf_ctx *qedf = skb_work->qedf;
+ struct sk_buff *skb = skb_work->skb;
+ struct ethhdr *eh;
+
+ if (!qedf) {
+ QEDF_ERR(NULL, "qedf is NULL\n");
+ goto err_out;
+ }
+
+ eh = (struct ethhdr *)skb->data;
+
+ /* Undo VLAN encapsulation */
+ if (eh->h_proto == htons(ETH_P_8021Q)) {
+ memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
+ eh = skb_pull(skb, VLAN_HLEN);
+ skb_reset_mac_header(skb);
+ }
+
+ /*
+ * Process either a FIP frame or FCoE frame based on the
+ * protocol value. If it's not either just drop the
+ * frame.
+ */
+ if (eh->h_proto == htons(ETH_P_FIP)) {
+ qedf_fip_recv(qedf, skb);
+ goto out;
+ } else if (eh->h_proto == htons(ETH_P_FCOE)) {
+ __skb_pull(skb, ETH_HLEN);
+ qedf_recv_frame(qedf, skb);
+ goto out;
+ } else
+ goto err_out;
+
+err_out:
+ kfree_skb(skb);
+out:
+ kfree(skb_work);
+ return;
+}
+
+static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
+ u32 arg1, u32 arg2)
+{
+ struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
+ struct qedf_skb_work *skb_work;
+
+ if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
+ "Dropping frame as link state is down.\n");
+ kfree_skb(skb);
+ return 0;
+ }
+
+ skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
+ if (!skb_work) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
+ "dropping frame.\n");
+ kfree_skb(skb);
+ return 0;
+ }
+
+ INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
+ skb_work->skb = skb;
+ skb_work->qedf = qedf;
+ queue_work(qedf->ll2_recv_wq, &skb_work->work);
+
+ return 0;
+}
+
+static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
+ .rx_cb = qedf_ll2_rx,
+ .tx_cb = NULL,
+};
+
+/* Main thread to process I/O completions */
+void qedf_fp_io_handler(struct work_struct *work)
+{
+ struct qedf_io_work *io_work =
+ container_of(work, struct qedf_io_work, work);
+ u32 comp_type;
+
+ /*
+ * Deferred part of unsolicited CQE sends
+ * frame to libfc.
+ */
+ comp_type = (io_work->cqe.cqe_data >>
+ FCOE_CQE_CQE_TYPE_SHIFT) &
+ FCOE_CQE_CQE_TYPE_MASK;
+ if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
+ io_work->fp)
+ fc_exch_recv(io_work->qedf->lport, io_work->fp);
+ else
+ qedf_process_cqe(io_work->qedf, &io_work->cqe);
+
+ kfree(io_work);
+}
+
+static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
+ struct qed_sb_info *sb_info, u16 sb_id)
+{
+ struct status_block *sb_virt;
+ dma_addr_t sb_phys;
+ int ret;
+
+ sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
+ sizeof(struct status_block), &sb_phys, GFP_KERNEL);
+
+ if (!sb_virt) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Status block allocation failed for id = %d.\n",
+ sb_id);
+ return -ENOMEM;
+ }
+
+ ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
+ sb_id, QED_SB_TYPE_STORAGE);
+
+ if (ret) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Status block initialization failed (0x%x) for id = %d.\n",
+ ret, sb_id);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
+{
+ if (sb_info->sb_virt)
+ dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
+ (void *)sb_info->sb_virt, sb_info->sb_phys);
+}
+
+static void qedf_destroy_sb(struct qedf_ctx *qedf)
+{
+ int id;
+ struct qedf_fastpath *fp = NULL;
+
+ for (id = 0; id < qedf->num_queues; id++) {
+ fp = &(qedf->fp_array[id]);
+ if (fp->sb_id == QEDF_SB_ID_NULL)
+ break;
+ qedf_free_sb(qedf, fp->sb_info);
+ kfree(fp->sb_info);
+ }
+ kfree(qedf->fp_array);
+}
+
+static int qedf_prepare_sb(struct qedf_ctx *qedf)
+{
+ int id;
+ struct qedf_fastpath *fp;
+ int ret;
+
+ qedf->fp_array =
+ kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
+ GFP_KERNEL);
+
+ if (!qedf->fp_array) {
+ QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
+ "failed.\n");
+ return -ENOMEM;
+ }
+
+ for (id = 0; id < qedf->num_queues; id++) {
+ fp = &(qedf->fp_array[id]);
+ fp->sb_id = QEDF_SB_ID_NULL;
+ fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
+ if (!fp->sb_info) {
+ QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
+ "allocation failed.\n");
+ goto err;
+ }
+ ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
+ if (ret) {
+ QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
+ "initialization failed.\n");
+ goto err;
+ }
+ fp->sb_id = id;
+ fp->qedf = qedf;
+ fp->cq_num_entries =
+ qedf->global_queues[id]->cq_mem_size /
+ sizeof(struct fcoe_cqe);
+ }
+err:
+ return 0;
+}
+
+void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
+{
+ u16 xid;
+ struct qedf_ioreq *io_req;
+ struct qedf_rport *fcport;
+ u32 comp_type;
+ u8 io_comp_type;
+ unsigned long flags;
+
+ comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
+ FCOE_CQE_CQE_TYPE_MASK;
+
+ xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
+ io_req = &qedf->cmd_mgr->cmds[xid];
+
+ /* Completion not for a valid I/O anymore so just return */
+ if (!io_req) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "io_req is NULL for xid=0x%x.\n", xid);
+ return;
+ }
+
+ fcport = io_req->fcport;
+
+ if (fcport == NULL) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "fcport is NULL for xid=0x%x io_req=%p.\n",
+ xid, io_req);
+ return;
+ }
+
+ /*
+ * Check that fcport is offloaded. If it isn't then the spinlock
+ * isn't valid and shouldn't be taken. We should just return.
+ */
+ if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Session not offloaded yet, fcport = %p.\n", fcport);
+ return;
+ }
+
+ spin_lock_irqsave(&fcport->rport_lock, flags);
+ io_comp_type = io_req->cmd_type;
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
+
+ switch (comp_type) {
+ case FCOE_GOOD_COMPLETION_CQE_TYPE:
+ atomic_inc(&fcport->free_sqes);
+ switch (io_comp_type) {
+ case QEDF_SCSI_CMD:
+ qedf_scsi_completion(qedf, cqe, io_req);
+ break;
+ case QEDF_ELS:
+ qedf_process_els_compl(qedf, cqe, io_req);
+ break;
+ case QEDF_TASK_MGMT_CMD:
+ qedf_process_tmf_compl(qedf, cqe, io_req);
+ break;
+ case QEDF_SEQ_CLEANUP:
+ qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
+ break;
+ }
+ break;
+ case FCOE_ERROR_DETECTION_CQE_TYPE:
+ atomic_inc(&fcport->free_sqes);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Error detect CQE.\n");
+ qedf_process_error_detect(qedf, cqe, io_req);
+ break;
+ case FCOE_EXCH_CLEANUP_CQE_TYPE:
+ atomic_inc(&fcport->free_sqes);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Cleanup CQE.\n");
+ qedf_process_cleanup_compl(qedf, cqe, io_req);
+ break;
+ case FCOE_ABTS_CQE_TYPE:
+ atomic_inc(&fcport->free_sqes);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Abort CQE.\n");
+ qedf_process_abts_compl(qedf, cqe, io_req);
+ break;
+ case FCOE_DUMMY_CQE_TYPE:
+ atomic_inc(&fcport->free_sqes);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Dummy CQE.\n");
+ break;
+ case FCOE_LOCAL_COMP_CQE_TYPE:
+ atomic_inc(&fcport->free_sqes);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Local completion CQE.\n");
+ break;
+ case FCOE_WARNING_CQE_TYPE:
+ atomic_inc(&fcport->free_sqes);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Warning CQE.\n");
+ qedf_process_warning_compl(qedf, cqe, io_req);
+ break;
+ case MAX_FCOE_CQE_TYPE:
+ atomic_inc(&fcport->free_sqes);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Max FCoE CQE.\n");
+ break;
+ default:
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
+ "Default CQE.\n");
+ break;
+ }
+}
+
+static void qedf_free_bdq(struct qedf_ctx *qedf)
+{
+ int i;
+
+ if (qedf->bdq_pbl_list)
+ dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
+ qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
+
+ if (qedf->bdq_pbl)
+ dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
+ qedf->bdq_pbl, qedf->bdq_pbl_dma);
+
+ for (i = 0; i < QEDF_BDQ_SIZE; i++) {
+ if (qedf->bdq[i].buf_addr) {
+ dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
+ qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
+ }
+ }
+}
+
+static void qedf_free_global_queues(struct qedf_ctx *qedf)
+{
+ int i;
+ struct global_queue **gl = qedf->global_queues;
+
+ for (i = 0; i < qedf->num_queues; i++) {
+ if (!gl[i])
+ continue;
+
+ if (gl[i]->cq)
+ dma_free_coherent(&qedf->pdev->dev,
+ gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
+ if (gl[i]->cq_pbl)
+ dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
+ gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
+
+ kfree(gl[i]);
+ }
+
+ qedf_free_bdq(qedf);
+}
+
+static int qedf_alloc_bdq(struct qedf_ctx *qedf)
+{
+ int i;
+ struct scsi_bd *pbl;
+ u64 *list;
+ dma_addr_t page;
+
+ /* Alloc dma memory for BDQ buffers */
+ for (i = 0; i < QEDF_BDQ_SIZE; i++) {
+ qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
+ QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
+ if (!qedf->bdq[i].buf_addr) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
+ "buffer %d.\n", i);
+ return -ENOMEM;
+ }
+ }
+
+ /* Alloc dma memory for BDQ page buffer list */
+ qedf->bdq_pbl_mem_size =
+ QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
+ qedf->bdq_pbl_mem_size =
+ ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
+
+ qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
+ qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
+ if (!qedf->bdq_pbl) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
+ return -ENOMEM;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "BDQ PBL addr=0x%p dma=%pad\n",
+ qedf->bdq_pbl, &qedf->bdq_pbl_dma);
+
+ /*
+ * Populate BDQ PBL with physical and virtual address of individual
+ * BDQ buffers
+ */
+ pbl = (struct scsi_bd *)qedf->bdq_pbl;
+ for (i = 0; i < QEDF_BDQ_SIZE; i++) {
+ pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
+ pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
+ pbl->opaque.fcoe_opaque.hi = 0;
+ /* Opaque lo data is an index into the BDQ array */
+ pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
+ pbl++;
+ }
+
+ /* Allocate list of PBL pages */
+ qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
+ QEDF_PAGE_SIZE,
+ &qedf->bdq_pbl_list_dma,
+ GFP_KERNEL);
+ if (!qedf->bdq_pbl_list) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * Now populate PBL list with pages that contain pointers to the
+ * individual buffers.
+ */
+ qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
+ QEDF_PAGE_SIZE;
+ list = (u64 *)qedf->bdq_pbl_list;
+ page = qedf->bdq_pbl_list_dma;
+ for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
+ *list = qedf->bdq_pbl_dma;
+ list++;
+ page += QEDF_PAGE_SIZE;
+ }
+
+ return 0;
+}
+
+static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
+{
+ u32 *list;
+ int i;
+ int status;
+ u32 *pbl;
+ dma_addr_t page;
+ int num_pages;
+
+ /* Allocate and map CQs, RQs */
+ /*
+ * Number of global queues (CQ / RQ). This should
+ * be <= number of available MSIX vectors for the PF
+ */
+ if (!qedf->num_queues) {
+ QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * Make sure we allocated the PBL that will contain the physical
+ * addresses of our queues
+ */
+ if (!qedf->p_cpuq) {
+ QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
+ return -EINVAL;
+ }
+
+ qedf->global_queues = kzalloc((sizeof(struct global_queue *)
+ * qedf->num_queues), GFP_KERNEL);
+ if (!qedf->global_queues) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
+ "queues array ptr memory\n");
+ return -ENOMEM;
+ }
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "qedf->global_queues=%p.\n", qedf->global_queues);
+
+ /* Allocate DMA coherent buffers for BDQ */
+ status = qedf_alloc_bdq(qedf);
+ if (status) {
+ QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
+ goto mem_alloc_failure;
+ }
+
+ /* Allocate a CQ and an associated PBL for each MSI-X vector */
+ for (i = 0; i < qedf->num_queues; i++) {
+ qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
+ GFP_KERNEL);
+ if (!qedf->global_queues[i]) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
+ "global queue %d.\n", i);
+ status = -ENOMEM;
+ goto mem_alloc_failure;
+ }
+
+ qedf->global_queues[i]->cq_mem_size =
+ FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
+ qedf->global_queues[i]->cq_mem_size =
+ ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
+
+ qedf->global_queues[i]->cq_pbl_size =
+ (qedf->global_queues[i]->cq_mem_size /
+ PAGE_SIZE) * sizeof(void *);
+ qedf->global_queues[i]->cq_pbl_size =
+ ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
+
+ qedf->global_queues[i]->cq =
+ dma_alloc_coherent(&qedf->pdev->dev,
+ qedf->global_queues[i]->cq_mem_size,
+ &qedf->global_queues[i]->cq_dma,
+ GFP_KERNEL);
+
+ if (!qedf->global_queues[i]->cq) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
+ status = -ENOMEM;
+ goto mem_alloc_failure;
+ }
+
+ qedf->global_queues[i]->cq_pbl =
+ dma_alloc_coherent(&qedf->pdev->dev,
+ qedf->global_queues[i]->cq_pbl_size,
+ &qedf->global_queues[i]->cq_pbl_dma,
+ GFP_KERNEL);
+
+ if (!qedf->global_queues[i]->cq_pbl) {
+ QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
+ status = -ENOMEM;
+ goto mem_alloc_failure;
+ }
+
+ /* Create PBL */
+ num_pages = qedf->global_queues[i]->cq_mem_size /
+ QEDF_PAGE_SIZE;
+ page = qedf->global_queues[i]->cq_dma;
+ pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
+
+ while (num_pages--) {
+ *pbl = U64_LO(page);
+ pbl++;
+ *pbl = U64_HI(page);
+ pbl++;
+ page += QEDF_PAGE_SIZE;
+ }
+ /* Set the initial consumer index for cq */
+ qedf->global_queues[i]->cq_cons_idx = 0;
+ }
+
+ list = (u32 *)qedf->p_cpuq;
+
+ /*
+ * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
+ * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
+ * to the physical address which contains an array of pointers to
+ * the physical addresses of the specific queue pages.
+ */
+ for (i = 0; i < qedf->num_queues; i++) {
+ *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
+ list++;
+ *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
+ list++;
+ *list = U64_LO(0);
+ list++;
+ *list = U64_HI(0);
+ list++;
+ }
+
+ return 0;
+
+mem_alloc_failure:
+ qedf_free_global_queues(qedf);
+ return status;
+}
+
+static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
+{
+ u8 sq_num_pbl_pages;
+ u32 sq_mem_size;
+ u32 cq_mem_size;
+ u32 cq_num_entries;
+ int rval;
+
+ /*
+ * The number of completion queues/fastpath interrupts/status blocks
+ * we allocation is the minimum off:
+ *
+ * Number of CPUs
+ * Number allocated by qed for our PCI function
+ */
+ qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
+ qedf->num_queues);
+
+ qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
+ qedf->num_queues * sizeof(struct qedf_glbl_q_params),
+ &qedf->hw_p_cpuq, GFP_KERNEL);
+
+ if (!qedf->p_cpuq) {
+ QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
+ return 1;
+ }
+
+ rval = qedf_alloc_global_queues(qedf);
+ if (rval) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
+ "failed.\n");
+ return 1;
+ }
+
+ /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
+ sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
+ sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
+ sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
+
+ /* Calculate CQ num entries */
+ cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
+ cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
+ cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
+
+ memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
+
+ /* Setup the value for fcoe PF */
+ qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
+ qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
+ qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
+ (u64)qedf->hw_p_cpuq;
+ qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
+
+ qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
+
+ qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
+ qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
+
+ /* log_page_size: 12 for 4KB pages */
+ qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
+
+ qedf->pf_params.fcoe_pf_params.mtu = 9000;
+ qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
+ qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
+
+ /* BDQ address and size */
+ qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
+ qedf->bdq_pbl_list_dma;
+ qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
+ qedf->bdq_pbl_list_num_entries;
+ qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
+ qedf->bdq_pbl_list,
+ qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
+ qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "cq_num_entries=%d.\n",
+ qedf->pf_params.fcoe_pf_params.cq_num_entries);
+
+ return 0;
+}
+
+/* Free DMA coherent memory for array of queue pointers we pass to qed */
+static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
+{
+ size_t size = 0;
+
+ if (qedf->p_cpuq) {
+ size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
+ dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
+ qedf->hw_p_cpuq);
+ }
+
+ qedf_free_global_queues(qedf);
+
+ kfree(qedf->global_queues);
+}
+
+/*
+ * PCI driver functions
+ */
+
+static const struct pci_device_id qedf_pci_tbl[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
+ { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
+ {0}
+};
+MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
+
+static struct pci_driver qedf_pci_driver = {
+ .name = QEDF_MODULE_NAME,
+ .id_table = qedf_pci_tbl,
+ .probe = qedf_probe,
+ .remove = qedf_remove,
+ .shutdown = qedf_shutdown,
+ .suspend = qedf_suspend,
+};
+
+static int __qedf_probe(struct pci_dev *pdev, int mode)
+{
+ int rc = -EINVAL;
+ struct fc_lport *lport;
+ struct qedf_ctx *qedf = NULL;
+ struct Scsi_Host *host;
+ bool is_vf = false;
+ struct qed_ll2_params params;
+ char host_buf[20];
+ struct qed_link_params link_params;
+ int status;
+ void *task_start, *task_end;
+ struct qed_slowpath_params slowpath_params;
+ struct qed_probe_params qed_params;
+ u16 retry_cnt = 10;
+
+ /*
+ * When doing error recovery we didn't reap the lport so don't try
+ * to reallocate it.
+ */
+retry_probe:
+ if (mode == QEDF_MODE_RECOVERY)
+ msleep(2000);
+
+ if (mode != QEDF_MODE_RECOVERY) {
+ lport = libfc_host_alloc(&qedf_host_template,
+ sizeof(struct qedf_ctx));
+
+ if (!lport) {
+ QEDF_ERR(NULL, "Could not allocate lport.\n");
+ rc = -ENOMEM;
+ goto err0;
+ }
+
+ fc_disc_init(lport);
+
+ /* Initialize qedf_ctx */
+ qedf = lport_priv(lport);
+ set_bit(QEDF_PROBING, &qedf->flags);
+ qedf->lport = lport;
+ qedf->ctlr.lp = lport;
+ qedf->pdev = pdev;
+ qedf->dbg_ctx.pdev = pdev;
+ qedf->dbg_ctx.host_no = lport->host->host_no;
+ spin_lock_init(&qedf->hba_lock);
+ INIT_LIST_HEAD(&qedf->fcports);
+ qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
+ atomic_set(&qedf->num_offloads, 0);
+ qedf->stop_io_on_error = false;
+ pci_set_drvdata(pdev, qedf);
+ init_completion(&qedf->fipvlan_compl);
+ mutex_init(&qedf->stats_mutex);
+ mutex_init(&qedf->flush_mutex);
+ qedf->flogi_pending = 0;
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
+ "QLogic FastLinQ FCoE Module qedf %s, "
+ "FW %d.%d.%d.%d\n", QEDF_VERSION,
+ FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
+ FW_ENGINEERING_VERSION);
+ } else {
+ /* Init pointers during recovery */
+ qedf = pci_get_drvdata(pdev);
+ set_bit(QEDF_PROBING, &qedf->flags);
+ lport = qedf->lport;
+ }
+
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
+
+ host = lport->host;
+
+ /* Allocate mempool for qedf_io_work structs */
+ qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
+ qedf_io_work_cache);
+ if (qedf->io_mempool == NULL) {
+ QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
+ goto err1;
+ }
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
+ qedf->io_mempool);
+
+ sprintf(host_buf, "qedf_%u_link",
+ qedf->lport->host->host_no);
+ qedf->link_update_wq = create_workqueue(host_buf);
+ INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
+ INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
+ INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
+ INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
+ qedf->fipvlan_retries = qedf_fipvlan_retries;
+ /* Set a default prio in case DCBX doesn't converge */
+ if (qedf_default_prio > -1) {
+ /*
+ * This is the case where we pass a modparam in so we want to
+ * honor it even if dcbx doesn't converge.
+ */
+ qedf->prio = qedf_default_prio;
+ } else
+ qedf->prio = QEDF_DEFAULT_PRIO;
+
+ /*
+ * Common probe. Takes care of basic hardware init and pci_*
+ * functions.
+ */
+ memset(&qed_params, 0, sizeof(qed_params));
+ qed_params.protocol = QED_PROTOCOL_FCOE;
+ qed_params.dp_module = qedf_dp_module;
+ qed_params.dp_level = qedf_dp_level;
+ qed_params.is_vf = is_vf;
+ qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
+ if (!qedf->cdev) {
+ if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Retry %d initialize hardware\n", retry_cnt);
+ retry_cnt--;
+ goto retry_probe;
+ }
+ QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
+ rc = -ENODEV;
+ goto err1;
+ }
+
+ /* Learn information crucial for qedf to progress */
+ rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
+ goto err1;
+ }
+
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+ "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
+ qedf->dev_info.common.num_hwfns,
+ qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
+
+ /* queue allocation code should come here
+ * order should be
+ * slowpath_start
+ * status block allocation
+ * interrupt registration (to get min number of queues)
+ * set_fcoe_pf_param
+ * qed_sp_fcoe_func_start
+ */
+ rc = qedf_set_fcoe_pf_param(qedf);
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
+ goto err2;
+ }
+ qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
+
+ /* Learn information crucial for qedf to progress */
+ rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
+ if (rc) {
+ QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
+ goto err2;
+ }
+
+ if (mode != QEDF_MODE_RECOVERY) {
+ qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
+ if (IS_ERR(qedf->devlink)) {
+ QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
+ rc = PTR_ERR(qedf->devlink);
+ qedf->devlink = NULL;
+ goto err2;
+ }
+ }
+
+ /* Record BDQ producer doorbell addresses */
+ qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
+ qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
+ qedf->bdq_secondary_prod);
+
+ qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
+
+ rc = qedf_prepare_sb(qedf);
+ if (rc) {
+
+ QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
+ goto err2;
+ }
+
+ /* Start the Slowpath-process */
+ slowpath_params.int_mode = QED_INT_MODE_MSIX;
+ slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
+ slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
+ slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
+ slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
+ strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
+ rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
+ goto err2;
+ }
+
+ /*
+ * update_pf_params needs to be called before and after slowpath
+ * start
+ */
+ qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
+
+ /* Setup interrupts */
+ rc = qedf_setup_int(qedf);
+ if (rc) {
+ QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
+ goto err3;
+ }
+
+ rc = qed_ops->start(qedf->cdev, &qedf->tasks);
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
+ goto err4;
+ }
+ task_start = qedf_get_task_mem(&qedf->tasks, 0);
+ task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
+ "end=%p block_size=%u.\n", task_start, task_end,
+ qedf->tasks.size);
+
+ /*
+ * We need to write the number of BDs in the BDQ we've preallocated so
+ * the f/w will do a prefetch and we'll get an unsolicited CQE when a
+ * packet arrives.
+ */
+ qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Writing %d to primary and secondary BDQ doorbell registers.\n",
+ qedf->bdq_prod_idx);
+ writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
+ readw(qedf->bdq_primary_prod);
+ writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
+ readw(qedf->bdq_secondary_prod);
+
+ qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
+
+ /* Now that the dev_info struct has been filled in set the MAC
+ * address
+ */
+ ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
+ qedf->mac);
+
+ /*
+ * Set the WWNN and WWPN in the following way:
+ *
+ * If the info we get from qed is non-zero then use that to set the
+ * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
+ * on the MAC address.
+ */
+ if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Setting WWPN and WWNN from qed dev_info.\n");
+ qedf->wwnn = qedf->dev_info.wwnn;
+ qedf->wwpn = qedf->dev_info.wwpn;
+ } else {
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
+ qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
+ qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
+ }
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx "
+ "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
+
+ sprintf(host_buf, "host_%d", host->host_no);
+ qed_ops->common->set_name(qedf->cdev, host_buf);
+
+ /* Allocate cmd mgr */
+ qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
+ if (!qedf->cmd_mgr) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
+ rc = -ENOMEM;
+ goto err5;
+ }
+
+ if (mode != QEDF_MODE_RECOVERY) {
+ host->transportt = qedf_fc_transport_template;
+ host->max_lun = qedf_max_lun;
+ host->max_cmd_len = QEDF_MAX_CDB_LEN;
+ host->max_id = QEDF_MAX_SESSIONS;
+ host->can_queue = FCOE_PARAMS_NUM_TASKS;
+ rc = scsi_add_host(host, &pdev->dev);
+ if (rc) {
+ QEDF_WARN(&qedf->dbg_ctx,
+ "Error adding Scsi_Host rc=0x%x.\n", rc);
+ goto err6;
+ }
+ }
+
+ memset(&params, 0, sizeof(params));
+ params.mtu = QEDF_LL2_BUF_SIZE;
+ ether_addr_copy(params.ll2_mac_address, qedf->mac);
+
+ /* Start LL2 processing thread */
+ snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
+ qedf->ll2_recv_wq =
+ create_workqueue(host_buf);
+ if (!qedf->ll2_recv_wq) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
+ rc = -ENOMEM;
+ goto err7;
+ }
+
+#ifdef CONFIG_DEBUG_FS
+ qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
+ qedf_dbg_fops);
+#endif
+
+ /* Start LL2 */
+ qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
+ rc = qed_ops->ll2->start(qedf->cdev, &params);
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
+ goto err7;
+ }
+ set_bit(QEDF_LL2_STARTED, &qedf->flags);
+
+ /* Set initial FIP/FCoE VLAN to NULL */
+ qedf->vlan_id = 0;
+
+ /*
+ * No need to setup fcoe_ctlr or fc_lport objects during recovery since
+ * they were not reaped during the unload process.
+ */
+ if (mode != QEDF_MODE_RECOVERY) {
+ /* Setup imbedded fcoe controller */
+ qedf_fcoe_ctlr_setup(qedf);
+
+ /* Setup lport */
+ rc = qedf_lport_setup(qedf);
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "qedf_lport_setup failed.\n");
+ goto err7;
+ }
+ }
+
+ sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
+ qedf->timer_work_queue =
+ create_workqueue(host_buf);
+ if (!qedf->timer_work_queue) {
+ QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
+ "workqueue.\n");
+ rc = -ENOMEM;
+ goto err7;
+ }
+
+ /* DPC workqueue is not reaped during recovery unload */
+ if (mode != QEDF_MODE_RECOVERY) {
+ sprintf(host_buf, "qedf_%u_dpc",
+ qedf->lport->host->host_no);
+ qedf->dpc_wq = create_workqueue(host_buf);
+ }
+ INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
+
+ /*
+ * GRC dump and sysfs parameters are not reaped during the recovery
+ * unload process.
+ */
+ if (mode != QEDF_MODE_RECOVERY) {
+ qedf->grcdump_size =
+ qed_ops->common->dbg_all_data_size(qedf->cdev);
+ if (qedf->grcdump_size) {
+ rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
+ qedf->grcdump_size);
+ if (rc) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "GRC Dump buffer alloc failed.\n");
+ qedf->grcdump = NULL;
+ }
+
+ QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
+ "grcdump: addr=%p, size=%u.\n",
+ qedf->grcdump, qedf->grcdump_size);
+ }
+ qedf_create_sysfs_ctx_attr(qedf);
+
+ /* Initialize I/O tracing for this adapter */
+ spin_lock_init(&qedf->io_trace_lock);
+ qedf->io_trace_idx = 0;
+ }
+
+ init_completion(&qedf->flogi_compl);
+
+ status = qed_ops->common->update_drv_state(qedf->cdev, true);
+ if (status)
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "Failed to send drv state to MFW.\n");
+
+ memset(&link_params, 0, sizeof(struct qed_link_params));
+ link_params.link_up = true;
+ status = qed_ops->common->set_link(qedf->cdev, &link_params);
+ if (status)
+ QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
+
+ /* Start/restart discovery */
+ if (mode == QEDF_MODE_RECOVERY)
+ fcoe_ctlr_link_up(&qedf->ctlr);
+ else
+ fc_fabric_login(lport);
+
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
+
+ clear_bit(QEDF_PROBING, &qedf->flags);
+
+ /* All good */
+ return 0;
+
+err7:
+ if (qedf->ll2_recv_wq)
+ destroy_workqueue(qedf->ll2_recv_wq);
+ fc_remove_host(qedf->lport->host);
+ scsi_remove_host(qedf->lport->host);
+#ifdef CONFIG_DEBUG_FS
+ qedf_dbg_host_exit(&(qedf->dbg_ctx));
+#endif
+err6:
+ qedf_cmd_mgr_free(qedf->cmd_mgr);
+err5:
+ qed_ops->stop(qedf->cdev);
+err4:
+ qedf_free_fcoe_pf_param(qedf);
+ qedf_sync_free_irqs(qedf);
+err3:
+ qed_ops->common->slowpath_stop(qedf->cdev);
+err2:
+ qed_ops->common->remove(qedf->cdev);
+err1:
+ scsi_host_put(lport->host);
+err0:
+ return rc;
+}
+
+static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ return __qedf_probe(pdev, QEDF_MODE_NORMAL);
+}
+
+static void __qedf_remove(struct pci_dev *pdev, int mode)
+{
+ struct qedf_ctx *qedf;
+ int rc;
+
+ if (!pdev) {
+ QEDF_ERR(NULL, "pdev is NULL.\n");
+ return;
+ }
+
+ qedf = pci_get_drvdata(pdev);
+
+ /*
+ * Prevent race where we're in board disable work and then try to
+ * rmmod the module.
+ */
+ if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
+ return;
+ }
+
+ if (mode != QEDF_MODE_RECOVERY)
+ set_bit(QEDF_UNLOADING, &qedf->flags);
+
+ /* Logoff the fabric to upload all connections */
+ if (mode == QEDF_MODE_RECOVERY)
+ fcoe_ctlr_link_down(&qedf->ctlr);
+ else
+ fc_fabric_logoff(qedf->lport);
+
+ if (!qedf_wait_for_upload(qedf))
+ QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
+
+#ifdef CONFIG_DEBUG_FS
+ qedf_dbg_host_exit(&(qedf->dbg_ctx));
+#endif
+
+ /* Stop any link update handling */
+ cancel_delayed_work_sync(&qedf->link_update);
+ destroy_workqueue(qedf->link_update_wq);
+ qedf->link_update_wq = NULL;
+
+ if (qedf->timer_work_queue)
+ destroy_workqueue(qedf->timer_work_queue);
+
+ /* Stop Light L2 */
+ clear_bit(QEDF_LL2_STARTED, &qedf->flags);
+ qed_ops->ll2->stop(qedf->cdev);
+ if (qedf->ll2_recv_wq)
+ destroy_workqueue(qedf->ll2_recv_wq);
+
+ /* Stop fastpath */
+ qedf_sync_free_irqs(qedf);
+ qedf_destroy_sb(qedf);
+
+ /*
+ * During recovery don't destroy OS constructs that represent the
+ * physical port.
+ */
+ if (mode != QEDF_MODE_RECOVERY) {
+ qedf_free_grc_dump_buf(&qedf->grcdump);
+ qedf_remove_sysfs_ctx_attr(qedf);
+
+ /* Remove all SCSI/libfc/libfcoe structures */
+ fcoe_ctlr_destroy(&qedf->ctlr);
+ fc_lport_destroy(qedf->lport);
+ fc_remove_host(qedf->lport->host);
+ scsi_remove_host(qedf->lport->host);
+ }
+
+ qedf_cmd_mgr_free(qedf->cmd_mgr);
+
+ if (mode != QEDF_MODE_RECOVERY) {
+ fc_exch_mgr_free(qedf->lport);
+ fc_lport_free_stats(qedf->lport);
+
+ /* Wait for all vports to be reaped */
+ qedf_wait_for_vport_destroy(qedf);
+ }
+
+ /*
+ * Now that all connections have been uploaded we can stop the
+ * rest of the qed operations
+ */
+ qed_ops->stop(qedf->cdev);
+
+ if (mode != QEDF_MODE_RECOVERY) {
+ if (qedf->dpc_wq) {
+ /* Stop general DPC handling */
+ destroy_workqueue(qedf->dpc_wq);
+ qedf->dpc_wq = NULL;
+ }
+ }
+
+ /* Final shutdown for the board */
+ qedf_free_fcoe_pf_param(qedf);
+ if (mode != QEDF_MODE_RECOVERY) {
+ qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
+ pci_set_drvdata(pdev, NULL);
+ }
+
+ rc = qed_ops->common->update_drv_state(qedf->cdev, false);
+ if (rc)
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "Failed to send drv state to MFW.\n");
+
+ if (mode != QEDF_MODE_RECOVERY && qedf->devlink) {
+ qed_ops->common->devlink_unregister(qedf->devlink);
+ qedf->devlink = NULL;
+ }
+
+ qed_ops->common->slowpath_stop(qedf->cdev);
+ qed_ops->common->remove(qedf->cdev);
+
+ mempool_destroy(qedf->io_mempool);
+
+ /* Only reap the Scsi_host on a real removal */
+ if (mode != QEDF_MODE_RECOVERY)
+ scsi_host_put(qedf->lport->host);
+}
+
+static void qedf_remove(struct pci_dev *pdev)
+{
+ /* Check to make sure this function wasn't already disabled */
+ if (!atomic_read(&pdev->enable_cnt))
+ return;
+
+ __qedf_remove(pdev, QEDF_MODE_NORMAL);
+}
+
+void qedf_wq_grcdump(struct work_struct *work)
+{
+ struct qedf_ctx *qedf =
+ container_of(work, struct qedf_ctx, grcdump_work.work);
+
+ QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
+ qedf_capture_grc_dump(qedf);
+}
+
+void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
+{
+ struct qedf_ctx *qedf = dev;
+
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "Hardware error handler scheduled, event=%d.\n",
+ err_type);
+
+ if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
+ QEDF_ERR(&(qedf->dbg_ctx),
+ "Already in recovery, not scheduling board disable work.\n");
+ return;
+ }
+
+ switch (err_type) {
+ case QED_HW_ERR_FAN_FAIL:
+ schedule_delayed_work(&qedf->board_disable_work, 0);
+ break;
+ case QED_HW_ERR_MFW_RESP_FAIL:
+ case QED_HW_ERR_HW_ATTN:
+ case QED_HW_ERR_DMAE_FAIL:
+ case QED_HW_ERR_FW_ASSERT:
+ /* Prevent HW attentions from being reasserted */
+ qed_ops->common->attn_clr_enable(qedf->cdev, true);
+ break;
+ case QED_HW_ERR_RAMROD_FAIL:
+ /* Prevent HW attentions from being reasserted */
+ qed_ops->common->attn_clr_enable(qedf->cdev, true);
+
+ if (qedf_enable_recovery && qedf->devlink)
+ qed_ops->common->report_fatal_error(qedf->devlink,
+ err_type);
+
+ break;
+ default:
+ break;
+ }
+}
+
+/*
+ * Protocol TLV handler
+ */
+void qedf_get_protocol_tlv_data(void *dev, void *data)
+{
+ struct qedf_ctx *qedf = dev;
+ struct qed_mfw_tlv_fcoe *fcoe = data;
+ struct fc_lport *lport;
+ struct Scsi_Host *host;
+ struct fc_host_attrs *fc_host;
+ struct fc_host_statistics *hst;
+
+ if (!qedf) {
+ QEDF_ERR(NULL, "qedf is null.\n");
+ return;
+ }
+
+ if (test_bit(QEDF_PROBING, &qedf->flags)) {
+ QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
+ return;
+ }
+
+ lport = qedf->lport;
+ host = lport->host;
+ fc_host = shost_to_fc_host(host);
+
+ /* Force a refresh of the fc_host stats including offload stats */
+ hst = qedf_fc_get_host_stats(host);
+
+ fcoe->qos_pri_set = true;
+ fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
+
+ fcoe->ra_tov_set = true;
+ fcoe->ra_tov = lport->r_a_tov;
+
+ fcoe->ed_tov_set = true;
+ fcoe->ed_tov = lport->e_d_tov;
+
+ fcoe->npiv_state_set = true;
+ fcoe->npiv_state = 1; /* NPIV always enabled */
+
+ fcoe->num_npiv_ids_set = true;
+ fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
+
+ /* Certain attributes we only want to set if we've selected an FCF */
+ if (qedf->ctlr.sel_fcf) {
+ fcoe->switch_name_set = true;
+ u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
+ }
+
+ fcoe->port_state_set = true;
+ /* For qedf we're either link down or fabric attach */
+ if (lport->link_up)
+ fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
+ else
+ fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
+
+ fcoe->link_failures_set = true;
+ fcoe->link_failures = (u16)hst->link_failure_count;
+
+ fcoe->fcoe_txq_depth_set = true;
+ fcoe->fcoe_rxq_depth_set = true;
+ fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
+ fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
+
+ fcoe->fcoe_rx_frames_set = true;
+ fcoe->fcoe_rx_frames = hst->rx_frames;
+
+ fcoe->fcoe_tx_frames_set = true;
+ fcoe->fcoe_tx_frames = hst->tx_frames;
+
+ fcoe->fcoe_rx_bytes_set = true;
+ fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
+
+ fcoe->fcoe_tx_bytes_set = true;
+ fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
+
+ fcoe->crc_count_set = true;
+ fcoe->crc_count = hst->invalid_crc_count;
+
+ fcoe->tx_abts_set = true;
+ fcoe->tx_abts = hst->fcp_packet_aborts;
+
+ fcoe->tx_lun_rst_set = true;
+ fcoe->tx_lun_rst = qedf->lun_resets;
+
+ fcoe->abort_task_sets_set = true;
+ fcoe->abort_task_sets = qedf->packet_aborts;
+
+ fcoe->scsi_busy_set = true;
+ fcoe->scsi_busy = qedf->busy;
+
+ fcoe->scsi_tsk_full_set = true;
+ fcoe->scsi_tsk_full = qedf->task_set_fulls;
+}
+
+/* Deferred work function to perform soft context reset on STAG change */
+void qedf_stag_change_work(struct work_struct *work)
+{
+ struct qedf_ctx *qedf =
+ container_of(work, struct qedf_ctx, stag_work.work);
+
+ printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
+ dev_name(&qedf->pdev->dev), __func__, __LINE__,
+ qedf->dbg_ctx.host_no);
+ qedf_ctx_soft_reset(qedf->lport);
+}
+
+static void qedf_shutdown(struct pci_dev *pdev)
+{
+ __qedf_remove(pdev, QEDF_MODE_NORMAL);
+}
+
+static int qedf_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct qedf_ctx *qedf;
+
+ if (!pdev) {
+ QEDF_ERR(NULL, "pdev is NULL.\n");
+ return -ENODEV;
+ }
+
+ qedf = pci_get_drvdata(pdev);
+
+ QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__);
+
+ return -EPERM;
+}
+
+/*
+ * Recovery handler code
+ */
+static void qedf_schedule_recovery_handler(void *dev)
+{
+ struct qedf_ctx *qedf = dev;
+
+ QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
+ schedule_delayed_work(&qedf->recovery_work, 0);
+}
+
+static void qedf_recovery_handler(struct work_struct *work)
+{
+ struct qedf_ctx *qedf =
+ container_of(work, struct qedf_ctx, recovery_work.work);
+
+ if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
+ return;
+
+ /*
+ * Call common_ops->recovery_prolog to allow the MFW to quiesce
+ * any PCI transactions.
+ */
+ qed_ops->common->recovery_prolog(qedf->cdev);
+
+ QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
+ __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
+ /*
+ * Reset link and dcbx to down state since we will not get a link down
+ * event from the MFW but calling __qedf_remove will essentially be a
+ * link down event.
+ */
+ atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
+ atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
+ __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
+ clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
+ QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
+}
+
+/* Generic TLV data callback */
+void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
+{
+ struct qedf_ctx *qedf;
+
+ if (!dev) {
+ QEDF_INFO(NULL, QEDF_LOG_EVT,
+ "dev is NULL so ignoring get_generic_tlv_data request.\n");
+ return;
+ }
+ qedf = (struct qedf_ctx *)dev;
+
+ memset(data, 0, sizeof(struct qed_generic_tlvs));
+ ether_addr_copy(data->mac[0], qedf->mac);
+}
+
+/*
+ * Module Init/Remove
+ */
+
+static int __init qedf_init(void)
+{
+ int ret;
+
+ /* If debug=1 passed, set the default log mask */
+ if (qedf_debug == QEDF_LOG_DEFAULT)
+ qedf_debug = QEDF_DEFAULT_LOG_MASK;
+
+ /*
+ * Check that default prio for FIP/FCoE traffic is between 0..7 if a
+ * value has been set
+ */
+ if (qedf_default_prio > -1)
+ if (qedf_default_prio > 7) {
+ qedf_default_prio = QEDF_DEFAULT_PRIO;
+ QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
+ QEDF_DEFAULT_PRIO);
+ }
+
+ /* Print driver banner */
+ QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
+ QEDF_VERSION);
+
+ /* Create kmem_cache for qedf_io_work structs */
+ qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
+ sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
+ if (qedf_io_work_cache == NULL) {
+ QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
+ goto err1;
+ }
+ QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
+ qedf_io_work_cache);
+
+ qed_ops = qed_get_fcoe_ops();
+ if (!qed_ops) {
+ QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
+ goto err1;
+ }
+
+#ifdef CONFIG_DEBUG_FS
+ qedf_dbg_init("qedf");
+#endif
+
+ qedf_fc_transport_template =
+ fc_attach_transport(&qedf_fc_transport_fn);
+ if (!qedf_fc_transport_template) {
+ QEDF_ERR(NULL, "Could not register with FC transport\n");
+ goto err2;
+ }
+
+ qedf_fc_vport_transport_template =
+ fc_attach_transport(&qedf_fc_vport_transport_fn);
+ if (!qedf_fc_vport_transport_template) {
+ QEDF_ERR(NULL, "Could not register vport template with FC "
+ "transport\n");
+ goto err3;
+ }
+
+ qedf_io_wq = create_workqueue("qedf_io_wq");
+ if (!qedf_io_wq) {
+ QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
+ goto err4;
+ }
+
+ qedf_cb_ops.get_login_failures = qedf_get_login_failures;
+
+ ret = pci_register_driver(&qedf_pci_driver);
+ if (ret) {
+ QEDF_ERR(NULL, "Failed to register driver\n");
+ goto err5;
+ }
+
+ return 0;
+
+err5:
+ destroy_workqueue(qedf_io_wq);
+err4:
+ fc_release_transport(qedf_fc_vport_transport_template);
+err3:
+ fc_release_transport(qedf_fc_transport_template);
+err2:
+#ifdef CONFIG_DEBUG_FS
+ qedf_dbg_exit();
+#endif
+ qed_put_fcoe_ops();
+err1:
+ return -EINVAL;
+}
+
+static void __exit qedf_cleanup(void)
+{
+ pci_unregister_driver(&qedf_pci_driver);
+
+ destroy_workqueue(qedf_io_wq);
+
+ fc_release_transport(qedf_fc_vport_transport_template);
+ fc_release_transport(qedf_fc_transport_template);
+#ifdef CONFIG_DEBUG_FS
+ qedf_dbg_exit();
+#endif
+ qed_put_fcoe_ops();
+
+ kmem_cache_destroy(qedf_io_work_cache);
+}
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
+MODULE_AUTHOR("QLogic Corporation");
+MODULE_VERSION(QEDF_VERSION);
+module_init(qedf_init);
+module_exit(qedf_cleanup);
diff --git a/drivers/scsi/qedf/qedf_version.h b/drivers/scsi/qedf/qedf_version.h
new file mode 100644
index 000000000..b0e37afe5
--- /dev/null
+++ b/drivers/scsi/qedf/qedf_version.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * QLogic FCoE Offload Driver
+ * Copyright (c) 2016-2018 Cavium Inc.
+ */
+
+#define QEDF_VERSION "8.42.3.0"
+#define QEDF_DRIVER_MAJOR_VER 8
+#define QEDF_DRIVER_MINOR_VER 42
+#define QEDF_DRIVER_REV_VER 3
+#define QEDF_DRIVER_ENG_VER 0
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 21:40:54 +0000