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Diffstat (limited to 'drivers/scsi/qla2xxx/qla_target.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_target.c7409
1 files changed, 7409 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
new file mode 100644
index 000000000..5a5beb417
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -0,0 +1,7409 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
+ *
+ * based on qla2x00t.c code:
+ *
+ * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
+ * Copyright (C) 2004 - 2005 Leonid Stoljar
+ * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
+ * Copyright (C) 2006 - 2010 ID7 Ltd.
+ *
+ * Forward port and refactoring to modern qla2xxx and target/configfs
+ *
+ * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/blkdev.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <linux/workqueue.h>
+#include <asm/unaligned.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_tcq.h>
+
+#include "qla_def.h"
+#include "qla_target.h"
+
+static int ql2xtgt_tape_enable;
+module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(ql2xtgt_tape_enable,
+ "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
+
+static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
+module_param(qlini_mode, charp, S_IRUGO);
+MODULE_PARM_DESC(qlini_mode,
+ "Determines when initiator mode will be enabled. Possible values: "
+ "\"exclusive\" - initiator mode will be enabled on load, "
+ "disabled on enabling target mode and then on disabling target mode "
+ "enabled back; "
+ "\"disabled\" - initiator mode will never be enabled; "
+ "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
+ "when ready "
+ "\"enabled\" (default) - initiator mode will always stay enabled.");
+
+int ql2xuctrlirq = 1;
+module_param(ql2xuctrlirq, int, 0644);
+MODULE_PARM_DESC(ql2xuctrlirq,
+ "User to control IRQ placement via smp_affinity."
+ "Valid with qlini_mode=disabled."
+ "1(default): enable");
+
+int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
+
+static int qla_sam_status = SAM_STAT_BUSY;
+static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */
+
+/*
+ * From scsi/fc/fc_fcp.h
+ */
+enum fcp_resp_rsp_codes {
+ FCP_TMF_CMPL = 0,
+ FCP_DATA_LEN_INVALID = 1,
+ FCP_CMND_FIELDS_INVALID = 2,
+ FCP_DATA_PARAM_MISMATCH = 3,
+ FCP_TMF_REJECTED = 4,
+ FCP_TMF_FAILED = 5,
+ FCP_TMF_INVALID_LUN = 9,
+};
+
+/*
+ * fc_pri_ta from scsi/fc/fc_fcp.h
+ */
+#define FCP_PTA_SIMPLE 0 /* simple task attribute */
+#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
+#define FCP_PTA_ORDERED 2 /* ordered task attribute */
+#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
+#define FCP_PTA_MASK 7 /* mask for task attribute field */
+#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
+#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
+
+/*
+ * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
+ * must be called under HW lock and could unlock/lock it inside.
+ * It isn't an issue, since in the current implementation on the time when
+ * those functions are called:
+ *
+ * - Either context is IRQ and only IRQ handler can modify HW data,
+ * including rings related fields,
+ *
+ * - Or access to target mode variables from struct qla_tgt doesn't
+ * cross those functions boundaries, except tgt_stop, which
+ * additionally protected by irq_cmd_count.
+ */
+/* Predefs for callbacks handed to qla2xxx LLD */
+static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
+ struct atio_from_isp *pkt, uint8_t);
+static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
+ response_t *pkt);
+static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
+ int fn, void *iocb, int flags);
+static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
+ *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
+static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio, uint16_t status, int qfull);
+static void qlt_disable_vha(struct scsi_qla_host *vha);
+static void qlt_clear_tgt_db(struct qla_tgt *tgt);
+static void qlt_send_notify_ack(struct qla_qpair *qpair,
+ struct imm_ntfy_from_isp *ntfy,
+ uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
+ uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
+static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *imm, int ha_locked);
+static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
+ fc_port_t *fcport, bool local);
+void qlt_unreg_sess(struct fc_port *sess);
+static void qlt_24xx_handle_abts(struct scsi_qla_host *,
+ struct abts_recv_from_24xx *);
+static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
+ uint16_t);
+static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t);
+static inline uint32_t qlt_make_handle(struct qla_qpair *);
+
+/*
+ * Global Variables
+ */
+static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
+struct kmem_cache *qla_tgt_plogi_cachep;
+static mempool_t *qla_tgt_mgmt_cmd_mempool;
+static struct workqueue_struct *qla_tgt_wq;
+static DEFINE_MUTEX(qla_tgt_mutex);
+static LIST_HEAD(qla_tgt_glist);
+
+static const char *prot_op_str(u32 prot_op)
+{
+ switch (prot_op) {
+ case TARGET_PROT_NORMAL: return "NORMAL";
+ case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
+ case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
+ case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
+ case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
+ case TARGET_PROT_DIN_PASS: return "DIN_PASS";
+ case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
+ default: return "UNKNOWN";
+ }
+}
+
+/* This API intentionally takes dest as a parameter, rather than returning
+ * int value to avoid caller forgetting to issue wmb() after the store */
+void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
+{
+ scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
+ *dest = atomic_inc_return(&base_vha->generation_tick);
+ /* memory barrier */
+ wmb();
+}
+
+/* Might release hw lock, then reaquire!! */
+static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
+{
+ /* Send marker if required */
+ if (unlikely(vha->marker_needed != 0)) {
+ int rc = qla2x00_issue_marker(vha, vha_locked);
+
+ if (rc != QLA_SUCCESS) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe03d,
+ "qla_target(%d): issue_marker() failed\n",
+ vha->vp_idx);
+ }
+ return rc;
+ }
+ return QLA_SUCCESS;
+}
+
+struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha,
+ be_id_t d_id)
+{
+ struct scsi_qla_host *host;
+ uint32_t key;
+
+ if (vha->d_id.b.area == d_id.area &&
+ vha->d_id.b.domain == d_id.domain &&
+ vha->d_id.b.al_pa == d_id.al_pa)
+ return vha;
+
+ key = be_to_port_id(d_id).b24;
+
+ host = btree_lookup32(&vha->hw->host_map, key);
+ if (!host)
+ ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
+ "Unable to find host %06x\n", key);
+
+ return host;
+}
+
+static inline
+struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
+ uint16_t vp_idx)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ if (vha->vp_idx == vp_idx)
+ return vha;
+
+ BUG_ON(ha->tgt.tgt_vp_map == NULL);
+ if (likely(test_bit(vp_idx, ha->vp_idx_map)))
+ return ha->tgt.tgt_vp_map[vp_idx].vha;
+
+ return NULL;
+}
+
+static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
+
+ vha->hw->tgt.num_pend_cmds++;
+ if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
+ vha->qla_stats.stat_max_pend_cmds =
+ vha->hw->tgt.num_pend_cmds;
+ spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+}
+static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
+ vha->hw->tgt.num_pend_cmds--;
+ spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+}
+
+
+static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
+ struct atio_from_isp *atio, uint8_t ha_locked)
+{
+ struct qla_tgt_sess_op *u;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ unsigned long flags;
+
+ if (tgt->tgt_stop) {
+ ql_dbg(ql_dbg_async, vha, 0x502c,
+ "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
+ vha->vp_idx);
+ goto out_term;
+ }
+
+ u = kzalloc(sizeof(*u), GFP_ATOMIC);
+ if (u == NULL)
+ goto out_term;
+
+ u->vha = vha;
+ memcpy(&u->atio, atio, sizeof(*atio));
+ INIT_LIST_HEAD(&u->cmd_list);
+
+ spin_lock_irqsave(&vha->cmd_list_lock, flags);
+ list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
+ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
+
+ schedule_delayed_work(&vha->unknown_atio_work, 1);
+
+out:
+ return;
+
+out_term:
+ qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
+ goto out;
+}
+
+static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
+ uint8_t ha_locked)
+{
+ struct qla_tgt_sess_op *u, *t;
+ scsi_qla_host_t *host;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ unsigned long flags;
+ uint8_t queued = 0;
+
+ list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
+ if (u->aborted) {
+ ql_dbg(ql_dbg_async, vha, 0x502e,
+ "Freeing unknown %s %p, because of Abort\n",
+ "ATIO_TYPE7", u);
+ qlt_send_term_exchange(vha->hw->base_qpair, NULL,
+ &u->atio, ha_locked, 0);
+ goto abort;
+ }
+
+ host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
+ if (host != NULL) {
+ ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
+ "Requeuing unknown ATIO_TYPE7 %p\n", u);
+ qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
+ } else if (tgt->tgt_stop) {
+ ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
+ "Freeing unknown %s %p, because tgt is being stopped\n",
+ "ATIO_TYPE7", u);
+ qlt_send_term_exchange(vha->hw->base_qpair, NULL,
+ &u->atio, ha_locked, 0);
+ } else {
+ ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
+ "Reschedule u %p, vha %p, host %p\n", u, vha, host);
+ if (!queued) {
+ queued = 1;
+ schedule_delayed_work(&vha->unknown_atio_work,
+ 1);
+ }
+ continue;
+ }
+
+abort:
+ spin_lock_irqsave(&vha->cmd_list_lock, flags);
+ list_del(&u->cmd_list);
+ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
+ kfree(u);
+ }
+}
+
+void qlt_unknown_atio_work_fn(struct work_struct *work)
+{
+ struct scsi_qla_host *vha = container_of(to_delayed_work(work),
+ struct scsi_qla_host, unknown_atio_work);
+
+ qlt_try_to_dequeue_unknown_atios(vha, 0);
+}
+
+static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio, uint8_t ha_locked)
+{
+ ql_dbg(ql_dbg_tgt, vha, 0xe072,
+ "%s: qla_target(%d): type %x ox_id %04x\n",
+ __func__, vha->vp_idx, atio->u.raw.entry_type,
+ be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
+
+ switch (atio->u.raw.entry_type) {
+ case ATIO_TYPE7:
+ {
+ struct scsi_qla_host *host = qla_find_host_by_d_id(vha,
+ atio->u.isp24.fcp_hdr.d_id);
+ if (unlikely(NULL == host)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe03e,
+ "qla_target(%d): Received ATIO_TYPE7 "
+ "with unknown d_id %x:%x:%x\n", vha->vp_idx,
+ atio->u.isp24.fcp_hdr.d_id.domain,
+ atio->u.isp24.fcp_hdr.d_id.area,
+ atio->u.isp24.fcp_hdr.d_id.al_pa);
+
+
+ qlt_queue_unknown_atio(vha, atio, ha_locked);
+ break;
+ }
+ if (unlikely(!list_empty(&vha->unknown_atio_list)))
+ qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
+
+ qlt_24xx_atio_pkt(host, atio, ha_locked);
+ break;
+ }
+
+ case IMMED_NOTIFY_TYPE:
+ {
+ struct scsi_qla_host *host = vha;
+ struct imm_ntfy_from_isp *entry =
+ (struct imm_ntfy_from_isp *)atio;
+
+ qlt_issue_marker(vha, ha_locked);
+
+ if ((entry->u.isp24.vp_index != 0xFF) &&
+ (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) {
+ host = qlt_find_host_by_vp_idx(vha,
+ entry->u.isp24.vp_index);
+ if (unlikely(!host)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe03f,
+ "qla_target(%d): Received "
+ "ATIO (IMMED_NOTIFY_TYPE) "
+ "with unknown vp_index %d\n",
+ vha->vp_idx, entry->u.isp24.vp_index);
+ break;
+ }
+ }
+ qlt_24xx_atio_pkt(host, atio, ha_locked);
+ break;
+ }
+
+ case VP_RPT_ID_IOCB_TYPE:
+ qla24xx_report_id_acquisition(vha,
+ (struct vp_rpt_id_entry_24xx *)atio);
+ break;
+
+ case ABTS_RECV_24XX:
+ {
+ struct abts_recv_from_24xx *entry =
+ (struct abts_recv_from_24xx *)atio;
+ struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
+ entry->vp_index);
+ unsigned long flags;
+
+ if (unlikely(!host)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe00a,
+ "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
+ "received, with unknown vp_index %d\n",
+ vha->vp_idx, entry->vp_index);
+ break;
+ }
+ if (!ha_locked)
+ spin_lock_irqsave(&host->hw->hardware_lock, flags);
+ qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
+ if (!ha_locked)
+ spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
+ break;
+ }
+
+ /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
+
+ default:
+ ql_dbg(ql_dbg_tgt, vha, 0xe040,
+ "qla_target(%d): Received unknown ATIO atio "
+ "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
+ break;
+ }
+
+ return false;
+}
+
+void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
+ struct rsp_que *rsp, response_t *pkt)
+{
+ switch (pkt->entry_type) {
+ case CTIO_CRC2:
+ ql_dbg(ql_dbg_tgt, vha, 0xe073,
+ "qla_target(%d):%s: CRC2 Response pkt\n",
+ vha->vp_idx, __func__);
+ fallthrough;
+ case CTIO_TYPE7:
+ {
+ struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
+ struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
+ entry->vp_index);
+ if (unlikely(!host)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe041,
+ "qla_target(%d): Response pkt (CTIO_TYPE7) "
+ "received, with unknown vp_index %d\n",
+ vha->vp_idx, entry->vp_index);
+ break;
+ }
+ qlt_response_pkt(host, rsp, pkt);
+ break;
+ }
+
+ case IMMED_NOTIFY_TYPE:
+ {
+ struct scsi_qla_host *host;
+ struct imm_ntfy_from_isp *entry =
+ (struct imm_ntfy_from_isp *)pkt;
+
+ host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
+ if (unlikely(!host)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe042,
+ "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
+ "received, with unknown vp_index %d\n",
+ vha->vp_idx, entry->u.isp24.vp_index);
+ break;
+ }
+ qlt_response_pkt(host, rsp, pkt);
+ break;
+ }
+
+ case NOTIFY_ACK_TYPE:
+ {
+ struct scsi_qla_host *host = vha;
+ struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
+
+ if (0xFF != entry->u.isp24.vp_index) {
+ host = qlt_find_host_by_vp_idx(vha,
+ entry->u.isp24.vp_index);
+ if (unlikely(!host)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe043,
+ "qla_target(%d): Response "
+ "pkt (NOTIFY_ACK_TYPE) "
+ "received, with unknown "
+ "vp_index %d\n", vha->vp_idx,
+ entry->u.isp24.vp_index);
+ break;
+ }
+ }
+ qlt_response_pkt(host, rsp, pkt);
+ break;
+ }
+
+ case ABTS_RECV_24XX:
+ {
+ struct abts_recv_from_24xx *entry =
+ (struct abts_recv_from_24xx *)pkt;
+ struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
+ entry->vp_index);
+ if (unlikely(!host)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe044,
+ "qla_target(%d): Response pkt "
+ "(ABTS_RECV_24XX) received, with unknown "
+ "vp_index %d\n", vha->vp_idx, entry->vp_index);
+ break;
+ }
+ qlt_response_pkt(host, rsp, pkt);
+ break;
+ }
+
+ case ABTS_RESP_24XX:
+ {
+ struct abts_resp_to_24xx *entry =
+ (struct abts_resp_to_24xx *)pkt;
+ struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
+ entry->vp_index);
+ if (unlikely(!host)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe045,
+ "qla_target(%d): Response pkt "
+ "(ABTS_RECV_24XX) received, with unknown "
+ "vp_index %d\n", vha->vp_idx, entry->vp_index);
+ break;
+ }
+ qlt_response_pkt(host, rsp, pkt);
+ break;
+ }
+ default:
+ qlt_response_pkt(vha, rsp, pkt);
+ break;
+ }
+
+}
+
+/*
+ * All qlt_plogi_ack_t operations are protected by hardware_lock
+ */
+static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
+ struct imm_ntfy_from_isp *ntfy, int type)
+{
+ struct qla_work_evt *e;
+
+ e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
+ if (!e)
+ return QLA_FUNCTION_FAILED;
+
+ e->u.nack.fcport = fcport;
+ e->u.nack.type = type;
+ memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
+ return qla2x00_post_work(vha, e);
+}
+
+static void qla2x00_async_nack_sp_done(srb_t *sp, int res)
+{
+ struct scsi_qla_host *vha = sp->vha;
+ unsigned long flags;
+
+ ql_dbg(ql_dbg_disc, vha, 0x20f2,
+ "Async done-%s res %x %8phC type %d\n",
+ sp->name, res, sp->fcport->port_name, sp->type);
+
+ spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
+ sp->fcport->flags &= ~FCF_ASYNC_SENT;
+ sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
+
+ switch (sp->type) {
+ case SRB_NACK_PLOGI:
+ sp->fcport->login_gen++;
+ sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
+ sp->fcport->logout_on_delete = 1;
+ sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
+ sp->fcport->send_els_logo = 0;
+
+ if (sp->fcport->flags & FCF_FCSP_DEVICE) {
+ ql_dbg(ql_dbg_edif, vha, 0x20ef,
+ "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__,
+ sp->fcport->port_name);
+ qla2x00_set_fcport_disc_state(sp->fcport,
+ DSC_LOGIN_AUTH_PEND);
+ qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE,
+ sp->fcport->d_id.b24);
+ qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24,
+ 0, sp->fcport);
+ }
+ break;
+
+ case SRB_NACK_PRLI:
+ sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
+ sp->fcport->deleted = 0;
+ sp->fcport->send_els_logo = 0;
+
+ if (!sp->fcport->login_succ &&
+ !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
+ sp->fcport->login_succ = 1;
+
+ vha->fcport_count++;
+ spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+ qla24xx_sched_upd_fcport(sp->fcport);
+ spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
+ } else {
+ sp->fcport->login_retry = 0;
+ qla2x00_set_fcport_disc_state(sp->fcport,
+ DSC_LOGIN_COMPLETE);
+ sp->fcport->deleted = 0;
+ sp->fcport->logout_on_delete = 1;
+ }
+ break;
+
+ case SRB_NACK_LOGO:
+ sp->fcport->login_gen++;
+ sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
+ qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
+ break;
+ }
+ spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+
+ kref_put(&sp->cmd_kref, qla2x00_sp_release);
+}
+
+int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
+ struct imm_ntfy_from_isp *ntfy, int type)
+{
+ int rval = QLA_FUNCTION_FAILED;
+ srb_t *sp;
+ char *c = NULL;
+
+ fcport->flags |= FCF_ASYNC_SENT;
+ switch (type) {
+ case SRB_NACK_PLOGI:
+ fcport->fw_login_state = DSC_LS_PLOGI_PEND;
+ c = "PLOGI";
+ if (vha->hw->flags.edif_enabled &&
+ (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP))
+ fcport->flags |= FCF_FCSP_DEVICE;
+ break;
+ case SRB_NACK_PRLI:
+ fcport->fw_login_state = DSC_LS_PRLI_PEND;
+ fcport->deleted = 0;
+ c = "PRLI";
+ break;
+ case SRB_NACK_LOGO:
+ fcport->fw_login_state = DSC_LS_LOGO_PEND;
+ c = "LOGO";
+ break;
+ }
+
+ sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
+ if (!sp)
+ goto done;
+
+ sp->type = type;
+ sp->name = "nack";
+ qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2,
+ qla2x00_async_nack_sp_done);
+
+ sp->u.iocb_cmd.u.nack.ntfy = ntfy;
+
+ ql_dbg(ql_dbg_disc, vha, 0x20f4,
+ "Async-%s %8phC hndl %x %s\n",
+ sp->name, fcport->port_name, sp->handle, c);
+
+ rval = qla2x00_start_sp(sp);
+ if (rval != QLA_SUCCESS)
+ goto done_free_sp;
+
+ return rval;
+
+done_free_sp:
+ kref_put(&sp->cmd_kref, qla2x00_sp_release);
+done:
+ fcport->flags &= ~FCF_ASYNC_SENT;
+ return rval;
+}
+
+void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
+{
+ fc_port_t *t;
+
+ switch (e->u.nack.type) {
+ case SRB_NACK_PRLI:
+ t = e->u.nack.fcport;
+ flush_work(&t->del_work);
+ flush_work(&t->free_work);
+ mutex_lock(&vha->vha_tgt.tgt_mutex);
+ t = qlt_create_sess(vha, e->u.nack.fcport, 0);
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+ if (t) {
+ ql_log(ql_log_info, vha, 0xd034,
+ "%s create sess success %p", __func__, t);
+ /* create sess has an extra kref */
+ vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
+ }
+ break;
+ }
+ qla24xx_async_notify_ack(vha, e->u.nack.fcport,
+ (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type);
+}
+
+void qla24xx_delete_sess_fn(struct work_struct *work)
+{
+ fc_port_t *fcport = container_of(work, struct fc_port, del_work);
+ struct qla_hw_data *ha = NULL;
+
+ if (!fcport || !fcport->vha || !fcport->vha->hw)
+ return;
+
+ ha = fcport->vha->hw;
+
+ if (fcport->se_sess) {
+ ha->tgt.tgt_ops->shutdown_sess(fcport);
+ ha->tgt.tgt_ops->put_sess(fcport);
+ } else {
+ qlt_unreg_sess(fcport);
+ }
+}
+
+/*
+ * Called from qla2x00_reg_remote_port()
+ */
+void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct fc_port *sess = fcport;
+ unsigned long flags;
+
+ if (!vha->hw->tgt.tgt_ops)
+ return;
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ if (tgt->tgt_stop) {
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+ return;
+ }
+
+ if (fcport->disc_state == DSC_DELETE_PEND) {
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+ return;
+ }
+
+ if (!sess->se_sess) {
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+ mutex_lock(&vha->vha_tgt.tgt_mutex);
+ sess = qlt_create_sess(vha, fcport, false);
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ } else {
+ if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+ return;
+ }
+
+ if (!kref_get_unless_zero(&sess->sess_kref)) {
+ ql_dbg(ql_dbg_disc, vha, 0x2107,
+ "%s: kref_get fail sess %8phC \n",
+ __func__, sess->port_name);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+ return;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
+ "qla_target(%u): %ssession for port %8phC "
+ "(loop ID %d) reappeared\n", vha->vp_idx,
+ sess->local ? "local " : "", sess->port_name, sess->loop_id);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
+ "Reappeared sess %p\n", sess);
+
+ ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
+ fcport->loop_id,
+ (fcport->flags & FCF_CONF_COMP_SUPPORTED));
+ }
+
+ if (sess && sess->local) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
+ "qla_target(%u): local session for "
+ "port %8phC (loop ID %d) became global\n", vha->vp_idx,
+ fcport->port_name, sess->loop_id);
+ sess->local = 0;
+ }
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+ ha->tgt.tgt_ops->put_sess(sess);
+}
+
+/*
+ * This is a zero-base ref-counting solution, since hardware_lock
+ * guarantees that ref_count is not modified concurrently.
+ * Upon successful return content of iocb is undefined
+ */
+static struct qlt_plogi_ack_t *
+qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
+ struct imm_ntfy_from_isp *iocb)
+{
+ struct qlt_plogi_ack_t *pla;
+
+ lockdep_assert_held(&vha->hw->hardware_lock);
+
+ list_for_each_entry(pla, &vha->plogi_ack_list, list) {
+ if (pla->id.b24 == id->b24) {
+ ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d,
+ "%s %d %8phC Term INOT due to new INOT",
+ __func__, __LINE__,
+ pla->iocb.u.isp24.port_name);
+ qlt_send_term_imm_notif(vha, &pla->iocb, 1);
+ memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
+ return pla;
+ }
+ }
+
+ pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
+ if (!pla) {
+ ql_dbg(ql_dbg_async, vha, 0x5088,
+ "qla_target(%d): Allocation of plogi_ack failed\n",
+ vha->vp_idx);
+ return NULL;
+ }
+
+ memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
+ pla->id = *id;
+ list_add_tail(&pla->list, &vha->plogi_ack_list);
+
+ return pla;
+}
+
+void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
+ struct qlt_plogi_ack_t *pla)
+{
+ struct imm_ntfy_from_isp *iocb = &pla->iocb;
+ port_id_t port_id;
+ uint16_t loop_id;
+ fc_port_t *fcport = pla->fcport;
+
+ BUG_ON(!pla->ref_count);
+ pla->ref_count--;
+
+ if (pla->ref_count)
+ return;
+
+ ql_dbg(ql_dbg_disc, vha, 0x5089,
+ "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
+ " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
+ iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
+ iocb->u.isp24.port_id[0],
+ le16_to_cpu(iocb->u.isp24.nport_handle),
+ iocb->u.isp24.exchange_address, iocb->ox_id);
+
+ port_id.b.domain = iocb->u.isp24.port_id[2];
+ port_id.b.area = iocb->u.isp24.port_id[1];
+ port_id.b.al_pa = iocb->u.isp24.port_id[0];
+ port_id.b.rsvd_1 = 0;
+
+ loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
+
+ fcport->loop_id = loop_id;
+ fcport->d_id = port_id;
+ if (iocb->u.isp24.status_subcode == ELS_PLOGI)
+ qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
+ else
+ qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
+
+ list_for_each_entry(fcport, &vha->vp_fcports, list) {
+ if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
+ fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
+ if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
+ fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
+ }
+
+ list_del(&pla->list);
+ kmem_cache_free(qla_tgt_plogi_cachep, pla);
+}
+
+void
+qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
+ struct fc_port *sess, enum qlt_plogi_link_t link)
+{
+ struct imm_ntfy_from_isp *iocb = &pla->iocb;
+ /* Inc ref_count first because link might already be pointing at pla */
+ pla->ref_count++;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
+ "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
+ " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
+ sess, link, sess->port_name,
+ iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
+ iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
+ pla->ref_count, pla, link);
+
+ if (link == QLT_PLOGI_LINK_CONFLICT) {
+ switch (sess->disc_state) {
+ case DSC_DELETED:
+ case DSC_DELETE_PEND:
+ pla->ref_count--;
+ return;
+ default:
+ break;
+ }
+ }
+
+ if (sess->plogi_link[link])
+ qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
+
+ if (link == QLT_PLOGI_LINK_SAME_WWN)
+ pla->fcport = sess;
+
+ sess->plogi_link[link] = pla;
+}
+
+typedef struct {
+ /* These fields must be initialized by the caller */
+ port_id_t id;
+ /*
+ * number of cmds dropped while we were waiting for
+ * initiator to ack LOGO initialize to 1 if LOGO is
+ * triggered by a command, otherwise, to 0
+ */
+ int cmd_count;
+
+ /* These fields are used by callee */
+ struct list_head list;
+} qlt_port_logo_t;
+
+static void
+qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
+{
+ qlt_port_logo_t *tmp;
+ int res;
+
+ if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) {
+ res = 0;
+ goto out;
+ }
+
+ mutex_lock(&vha->vha_tgt.tgt_mutex);
+
+ list_for_each_entry(tmp, &vha->logo_list, list) {
+ if (tmp->id.b24 == logo->id.b24) {
+ tmp->cmd_count += logo->cmd_count;
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+ return;
+ }
+ }
+
+ list_add_tail(&logo->list, &vha->logo_list);
+
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+
+ res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
+
+ mutex_lock(&vha->vha_tgt.tgt_mutex);
+ list_del(&logo->list);
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+
+out:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
+ "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
+ logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
+ logo->cmd_count, res);
+}
+
+void qlt_free_session_done(struct work_struct *work)
+{
+ struct fc_port *sess = container_of(work, struct fc_port,
+ free_work);
+ struct qla_tgt *tgt = sess->tgt;
+ struct scsi_qla_host *vha = sess->vha;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+ bool logout_started = false;
+ scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
+ struct qlt_plogi_ack_t *own =
+ sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
+
+ ql_dbg(ql_dbg_disc, vha, 0xf084,
+ "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
+ " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
+ __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
+ sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
+ sess->logout_on_delete, sess->keep_nport_handle,
+ sess->send_els_logo);
+
+ if (!IS_SW_RESV_ADDR(sess->d_id)) {
+ qla2x00_mark_device_lost(vha, sess, 0);
+
+ if (sess->send_els_logo) {
+ qlt_port_logo_t logo;
+
+ logo.id = sess->d_id;
+ logo.cmd_count = 0;
+ INIT_LIST_HEAD(&logo.list);
+ if (!own)
+ qlt_send_first_logo(vha, &logo);
+ sess->send_els_logo = 0;
+ }
+
+ if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
+ int rc;
+
+ if (!own ||
+ (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) {
+ sess->logout_completed = 0;
+ rc = qla2x00_post_async_logout_work(vha, sess,
+ NULL);
+ if (rc != QLA_SUCCESS)
+ ql_log(ql_log_warn, vha, 0xf085,
+ "Schedule logo failed sess %p rc %d\n",
+ sess, rc);
+ else
+ logout_started = true;
+ } else if (own && (own->iocb.u.isp24.status_subcode ==
+ ELS_PRLI) && ha->flags.rida_fmt2) {
+ rc = qla2x00_post_async_prlo_work(vha, sess,
+ NULL);
+ if (rc != QLA_SUCCESS)
+ ql_log(ql_log_warn, vha, 0xf085,
+ "Schedule PRLO failed sess %p rc %d\n",
+ sess, rc);
+ else
+ logout_started = true;
+ }
+ } /* if sess->logout_on_delete */
+
+ if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
+ !(sess->nvme_flag & NVME_FLAG_DELETING)) {
+ sess->nvme_flag |= NVME_FLAG_DELETING;
+ qla_nvme_unregister_remote_port(sess);
+ }
+
+ if (ha->flags.edif_enabled &&
+ (!own || (own &&
+ own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
+ sess->edif.authok = 0;
+ if (!ha->flags.host_shutting_down) {
+ ql_dbg(ql_dbg_edif, vha, 0x911e,
+ "%s wwpn %8phC calling qla2x00_release_all_sadb\n",
+ __func__, sess->port_name);
+ qla2x00_release_all_sadb(vha, sess);
+ } else {
+ ql_dbg(ql_dbg_edif, vha, 0x911e,
+ "%s bypassing release_all_sadb\n",
+ __func__);
+ }
+
+ qla_edif_clear_appdata(vha, sess);
+ qla_edif_sess_down(vha, sess);
+ }
+ }
+
+ /*
+ * Release the target session for FC Nexus from fabric module code.
+ */
+ if (sess->se_sess != NULL)
+ ha->tgt.tgt_ops->free_session(sess);
+
+ if (logout_started) {
+ bool traced = false;
+ u16 cnt = 0;
+
+ while (!READ_ONCE(sess->logout_completed)) {
+ if (!traced) {
+ ql_dbg(ql_dbg_disc, vha, 0xf086,
+ "%s: waiting for sess %p logout\n",
+ __func__, sess);
+ traced = true;
+ }
+ msleep(100);
+ cnt++;
+ /*
+ * Driver timeout is set to 22 Sec, update count value to loop
+ * long enough for log-out to complete before advancing. Otherwise,
+ * straddling logout can interfere with re-login attempt.
+ */
+ if (cnt > 230)
+ break;
+ }
+
+ ql_dbg(ql_dbg_disc, vha, 0xf087,
+ "%s: sess %p logout completed\n", __func__, sess);
+ }
+
+ if (sess->logo_ack_needed) {
+ sess->logo_ack_needed = 0;
+ qla24xx_async_notify_ack(vha, sess,
+ (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
+ }
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ if (sess->se_sess) {
+ sess->se_sess = NULL;
+ if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
+ tgt->sess_count--;
+ }
+
+ qla2x00_set_fcport_disc_state(sess, DSC_DELETED);
+ sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
+
+ if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
+ vha->fcport_count--;
+ sess->login_succ = 0;
+ }
+
+ qla2x00_clear_loop_id(sess);
+
+ if (sess->conflict) {
+ sess->conflict->login_pause = 0;
+ sess->conflict = NULL;
+ if (!test_bit(UNLOADING, &vha->dpc_flags))
+ set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
+ }
+
+ {
+ struct qlt_plogi_ack_t *con =
+ sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
+ struct imm_ntfy_from_isp *iocb;
+
+ own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
+
+ if (con) {
+ iocb = &con->iocb;
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
+ "se_sess %p / sess %p port %8phC is gone,"
+ " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
+ sess->se_sess, sess, sess->port_name,
+ own ? "releasing own PLOGI" : "no own PLOGI pending",
+ own ? own->ref_count : -1,
+ iocb->u.isp24.port_name, con->ref_count);
+ qlt_plogi_ack_unref(vha, con);
+ sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
+ } else {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
+ "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
+ sess->se_sess, sess, sess->port_name,
+ own ? "releasing own PLOGI" :
+ "no own PLOGI pending",
+ own ? own->ref_count : -1);
+ }
+
+ if (own) {
+ sess->fw_login_state = DSC_LS_PLOGI_PEND;
+ qlt_plogi_ack_unref(vha, own);
+ sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
+ }
+ }
+
+ sess->explicit_logout = 0;
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+ qla2x00_dfs_remove_rport(vha, sess);
+
+ spin_lock_irqsave(&vha->work_lock, flags);
+ sess->flags &= ~FCF_ASYNC_SENT;
+ sess->deleted = QLA_SESS_DELETED;
+ sess->free_pending = 0;
+ spin_unlock_irqrestore(&vha->work_lock, flags);
+
+ ql_dbg(ql_dbg_disc, vha, 0xf001,
+ "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
+ sess, sess->port_name, vha->fcport_count);
+
+ if (tgt && (tgt->sess_count == 0))
+ wake_up_all(&tgt->waitQ);
+
+ if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) &&
+ !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) &&
+ (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
+ switch (vha->host->active_mode) {
+ case MODE_INITIATOR:
+ case MODE_DUAL:
+ set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ break;
+ case MODE_TARGET:
+ default:
+ /* no-op */
+ break;
+ }
+ }
+
+ if (vha->fcport_count == 0)
+ wake_up_all(&vha->fcport_waitQ);
+}
+
+/* ha->tgt.sess_lock supposed to be held on entry */
+void qlt_unreg_sess(struct fc_port *sess)
+{
+ struct scsi_qla_host *vha = sess->vha;
+ unsigned long flags;
+
+ ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
+ "%s sess %p for deletion %8phC\n",
+ __func__, sess, sess->port_name);
+
+ spin_lock_irqsave(&sess->vha->work_lock, flags);
+ if (sess->free_pending) {
+ spin_unlock_irqrestore(&sess->vha->work_lock, flags);
+ return;
+ }
+ sess->free_pending = 1;
+ /*
+ * Use FCF_ASYNC_SENT flag to block other cmds used in sess
+ * management from being sent.
+ */
+ sess->flags |= FCF_ASYNC_SENT;
+ sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
+ spin_unlock_irqrestore(&sess->vha->work_lock, flags);
+
+ if (sess->se_sess)
+ vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
+
+ qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
+ sess->last_rscn_gen = sess->rscn_gen;
+ sess->last_login_gen = sess->login_gen;
+
+ queue_work(sess->vha->hw->wq, &sess->free_work);
+}
+EXPORT_SYMBOL(qlt_unreg_sess);
+
+static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct fc_port *sess = NULL;
+ uint16_t loop_id;
+ int res = 0;
+ struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
+ unsigned long flags;
+
+ loop_id = le16_to_cpu(n->u.isp24.nport_handle);
+ if (loop_id == 0xFFFF) {
+ /* Global event */
+ atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+ } else {
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+ }
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe000,
+ "Using sess for qla_tgt_reset: %p\n", sess);
+ if (!sess) {
+ res = -ESRCH;
+ return res;
+ }
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe047,
+ "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
+ "loop_id %d)\n", vha->host_no, sess, sess->port_name,
+ mcmd, loop_id);
+
+ return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
+}
+
+static void qla24xx_chk_fcp_state(struct fc_port *sess)
+{
+ if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
+ sess->logout_on_delete = 0;
+ sess->logo_ack_needed = 0;
+ sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
+ }
+}
+
+void qlt_schedule_sess_for_deletion(struct fc_port *sess)
+{
+ struct qla_tgt *tgt = sess->tgt;
+ unsigned long flags;
+ u16 sec;
+
+ switch (sess->disc_state) {
+ case DSC_DELETE_PEND:
+ return;
+ case DSC_DELETED:
+ if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
+ !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) {
+ if (tgt && tgt->tgt_stop && tgt->sess_count == 0)
+ wake_up_all(&tgt->waitQ);
+
+ if (sess->vha->fcport_count == 0)
+ wake_up_all(&sess->vha->fcport_waitQ);
+ return;
+ }
+ break;
+ case DSC_UPD_FCPORT:
+ /*
+ * This port is not done reporting to upper layer.
+ * let it finish
+ */
+ sess->next_disc_state = DSC_DELETE_PEND;
+ sec = jiffies_to_msecs(jiffies -
+ sess->jiffies_at_registration)/1000;
+ if (sess->sec_since_registration < sec && sec && !(sec % 5)) {
+ sess->sec_since_registration = sec;
+ ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
+ "%s %8phC : Slow Rport registration(%d Sec)\n",
+ __func__, sess->port_name, sec);
+ }
+ return;
+ default:
+ break;
+ }
+
+ spin_lock_irqsave(&sess->vha->work_lock, flags);
+ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
+ spin_unlock_irqrestore(&sess->vha->work_lock, flags);
+ return;
+ }
+ sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
+ spin_unlock_irqrestore(&sess->vha->work_lock, flags);
+
+ sess->prli_pend_timer = 0;
+ qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
+
+ qla24xx_chk_fcp_state(sess);
+
+ ql_dbg(ql_log_warn, sess->vha, 0xe001,
+ "Scheduling sess %p for deletion %8phC fc4_type %x\n",
+ sess, sess->port_name, sess->fc4_type);
+
+ WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
+}
+
+static void qlt_clear_tgt_db(struct qla_tgt *tgt)
+{
+ struct fc_port *sess;
+ scsi_qla_host_t *vha = tgt->vha;
+
+ list_for_each_entry(sess, &vha->vp_fcports, list) {
+ if (sess->se_sess)
+ qlt_schedule_sess_for_deletion(sess);
+ }
+
+ /* At this point tgt could be already dead */
+}
+
+static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id,
+ uint16_t *loop_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+ dma_addr_t gid_list_dma;
+ struct gid_list_info *gid_list, *gid;
+ int res, rc, i;
+ uint16_t entries;
+
+ gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
+ &gid_list_dma, GFP_KERNEL);
+ if (!gid_list) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
+ "qla_target(%d): DMA Alloc failed of %u\n",
+ vha->vp_idx, qla2x00_gid_list_size(ha));
+ return -ENOMEM;
+ }
+
+ /* Get list of logged in devices */
+ rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
+ if (rc != QLA_SUCCESS) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
+ "qla_target(%d): get_id_list() failed: %x\n",
+ vha->vp_idx, rc);
+ res = -EBUSY;
+ goto out_free_id_list;
+ }
+
+ gid = gid_list;
+ res = -ENOENT;
+ for (i = 0; i < entries; i++) {
+ if (gid->al_pa == s_id.al_pa &&
+ gid->area == s_id.area &&
+ gid->domain == s_id.domain) {
+ *loop_id = le16_to_cpu(gid->loop_id);
+ res = 0;
+ break;
+ }
+ gid = (void *)gid + ha->gid_list_info_size;
+ }
+
+out_free_id_list:
+ dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
+ gid_list, gid_list_dma);
+ return res;
+}
+
+/*
+ * Adds an extra ref to allow to drop hw lock after adding sess to the list.
+ * Caller must put it.
+ */
+static struct fc_port *qlt_create_sess(
+ struct scsi_qla_host *vha,
+ fc_port_t *fcport,
+ bool local)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct fc_port *sess = fcport;
+ unsigned long flags;
+
+ if (vha->vha_tgt.qla_tgt->tgt_stop)
+ return NULL;
+
+ if (fcport->se_sess) {
+ if (!kref_get_unless_zero(&sess->sess_kref)) {
+ ql_dbg(ql_dbg_disc, vha, 0x20f6,
+ "%s: kref_get_unless_zero failed for %8phC\n",
+ __func__, sess->port_name);
+ return NULL;
+ }
+ return fcport;
+ }
+ sess->tgt = vha->vha_tgt.qla_tgt;
+ sess->local = local;
+
+ /*
+ * Under normal circumstances we want to logout from firmware when
+ * session eventually ends and release corresponding nport handle.
+ * In the exception cases (e.g. when new PLOGI is waiting) corresponding
+ * code will adjust these flags as necessary.
+ */
+ sess->logout_on_delete = 1;
+ sess->keep_nport_handle = 0;
+ sess->logout_completed = 0;
+
+ if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
+ &fcport->port_name[0], sess) < 0) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
+ "(%d) %8phC check_initiator_node_acl failed\n",
+ vha->vp_idx, fcport->port_name);
+ return NULL;
+ } else {
+ kref_init(&fcport->sess_kref);
+ /*
+ * Take an extra reference to ->sess_kref here to handle
+ * fc_port access across ->tgt.sess_lock reaquire.
+ */
+ if (!kref_get_unless_zero(&sess->sess_kref)) {
+ ql_dbg(ql_dbg_disc, vha, 0x20f7,
+ "%s: kref_get_unless_zero failed for %8phC\n",
+ __func__, sess->port_name);
+ return NULL;
+ }
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ if (!IS_SW_RESV_ADDR(sess->d_id))
+ vha->vha_tgt.qla_tgt->sess_count++;
+
+ qlt_do_generation_tick(vha, &sess->generation);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
+ "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
+ sess, sess->se_sess, vha->vha_tgt.qla_tgt,
+ vha->vha_tgt.qla_tgt->sess_count);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
+ "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
+ "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
+ vha->vp_idx, local ? "local " : "", fcport->port_name,
+ fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
+ sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
+
+ return sess;
+}
+
+/*
+ * max_gen - specifies maximum session generation
+ * at which this deletion requestion is still valid
+ */
+void
+qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
+{
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct fc_port *sess = fcport;
+ unsigned long flags;
+
+ if (!vha->hw->tgt.tgt_ops)
+ return;
+
+ if (!tgt)
+ return;
+
+ spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
+ if (tgt->tgt_stop) {
+ spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+ return;
+ }
+ if (!sess->se_sess) {
+ spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+ return;
+ }
+
+ if (max_gen - sess->generation < 0) {
+ spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
+ "Ignoring stale deletion request for se_sess %p / sess %p"
+ " for port %8phC, req_gen %d, sess_gen %d\n",
+ sess->se_sess, sess, sess->port_name, max_gen,
+ sess->generation);
+ return;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
+
+ sess->local = 1;
+ spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+ qlt_schedule_sess_for_deletion(sess);
+}
+
+static inline int test_tgt_sess_count(struct qla_tgt *tgt)
+{
+ struct qla_hw_data *ha = tgt->ha;
+ unsigned long flags;
+ int res;
+ /*
+ * We need to protect against race, when tgt is freed before or
+ * inside wake_up()
+ */
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
+ "tgt %p, sess_count=%d\n",
+ tgt, tgt->sess_count);
+ res = (tgt->sess_count == 0);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+ return res;
+}
+
+/* Called by tcm_qla2xxx configfs code */
+int qlt_stop_phase1(struct qla_tgt *tgt)
+{
+ struct scsi_qla_host *vha = tgt->vha;
+ struct qla_hw_data *ha = tgt->ha;
+ unsigned long flags;
+
+ mutex_lock(&ha->optrom_mutex);
+ mutex_lock(&qla_tgt_mutex);
+
+ if (tgt->tgt_stop || tgt->tgt_stopped) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
+ "Already in tgt->tgt_stop or tgt_stopped state\n");
+ mutex_unlock(&qla_tgt_mutex);
+ mutex_unlock(&ha->optrom_mutex);
+ return -EPERM;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
+ vha->host_no, vha);
+ /*
+ * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
+ * Lock is needed, because we still can get an incoming packet.
+ */
+ mutex_lock(&vha->vha_tgt.tgt_mutex);
+ tgt->tgt_stop = 1;
+ qlt_clear_tgt_db(tgt);
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+ mutex_unlock(&qla_tgt_mutex);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
+ "Waiting for sess works (tgt %p)", tgt);
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+ do {
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+ flush_work(&tgt->sess_work);
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+ } while (!list_empty(&tgt->sess_works_list));
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
+ "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
+
+ wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
+
+ /* Big hammer */
+ if (!ha->flags.host_shutting_down &&
+ (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
+ qlt_disable_vha(vha);
+
+ /* Wait for sessions to clear out (just in case) */
+ wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
+ mutex_unlock(&ha->optrom_mutex);
+
+ return 0;
+}
+EXPORT_SYMBOL(qlt_stop_phase1);
+
+/* Called by tcm_qla2xxx configfs code */
+void qlt_stop_phase2(struct qla_tgt *tgt)
+{
+ scsi_qla_host_t *vha = tgt->vha;
+
+ if (tgt->tgt_stopped) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
+ "Already in tgt->tgt_stopped state\n");
+ dump_stack();
+ return;
+ }
+ if (!tgt->tgt_stop) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
+ "%s: phase1 stop is not completed\n", __func__);
+ dump_stack();
+ return;
+ }
+
+ mutex_lock(&tgt->ha->optrom_mutex);
+ mutex_lock(&vha->vha_tgt.tgt_mutex);
+ tgt->tgt_stop = 0;
+ tgt->tgt_stopped = 1;
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+ mutex_unlock(&tgt->ha->optrom_mutex);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
+ tgt);
+
+ switch (vha->qlini_mode) {
+ case QLA2XXX_INI_MODE_EXCLUSIVE:
+ vha->flags.online = 1;
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ break;
+ default:
+ break;
+ }
+}
+EXPORT_SYMBOL(qlt_stop_phase2);
+
+/* Called from qlt_remove_target() -> qla2x00_remove_one() */
+static void qlt_release(struct qla_tgt *tgt)
+{
+ scsi_qla_host_t *vha = tgt->vha;
+ void *node;
+ u64 key = 0;
+ u16 i;
+ struct qla_qpair_hint *h;
+ struct qla_hw_data *ha = vha->hw;
+
+ if (!tgt->tgt_stop && !tgt->tgt_stopped)
+ qlt_stop_phase1(tgt);
+
+ if (!tgt->tgt_stopped)
+ qlt_stop_phase2(tgt);
+
+ for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
+ unsigned long flags;
+
+ h = &tgt->qphints[i];
+ if (h->qpair) {
+ spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
+ list_del(&h->hint_elem);
+ spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
+ h->qpair = NULL;
+ }
+ }
+ kfree(tgt->qphints);
+ mutex_lock(&qla_tgt_mutex);
+ list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
+ mutex_unlock(&qla_tgt_mutex);
+
+ btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
+ btree_remove64(&tgt->lun_qpair_map, key);
+
+ btree_destroy64(&tgt->lun_qpair_map);
+
+ if (vha->vp_idx)
+ if (ha->tgt.tgt_ops &&
+ ha->tgt.tgt_ops->remove_target &&
+ vha->vha_tgt.target_lport_ptr)
+ ha->tgt.tgt_ops->remove_target(vha);
+
+ vha->vha_tgt.qla_tgt = NULL;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
+ "Release of tgt %p finished\n", tgt);
+
+ kfree(tgt);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
+ const void *param, unsigned int param_size)
+{
+ struct qla_tgt_sess_work_param *prm;
+ unsigned long flags;
+
+ prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
+ if (!prm) {
+ ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
+ "qla_target(%d): Unable to create session "
+ "work, command will be refused", 0);
+ return -ENOMEM;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
+ "Scheduling work (type %d, prm %p)"
+ " to find session for param %p (size %d, tgt %p)\n",
+ type, prm, param, param_size, tgt);
+
+ prm->type = type;
+ memcpy(&prm->tm_iocb, param, param_size);
+
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+ list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+ schedule_work(&tgt->sess_work);
+
+ return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qlt_send_notify_ack(struct qla_qpair *qpair,
+ struct imm_ntfy_from_isp *ntfy,
+ uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
+ uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
+{
+ struct scsi_qla_host *vha = qpair->vha;
+ struct qla_hw_data *ha = vha->hw;
+ request_t *pkt;
+ struct nack_to_isp *nack;
+
+ if (!ha->flags.fw_started)
+ return;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
+
+ pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
+ if (!pkt) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe049,
+ "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ return;
+ }
+
+ if (vha->vha_tgt.qla_tgt != NULL)
+ vha->vha_tgt.qla_tgt->notify_ack_expected++;
+
+ pkt->entry_type = NOTIFY_ACK_TYPE;
+ pkt->entry_count = 1;
+
+ nack = (struct nack_to_isp *)pkt;
+ nack->ox_id = ntfy->ox_id;
+
+ nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
+ nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
+ if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
+ nack->u.isp24.flags = ntfy->u.isp24.flags &
+ cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
+ }
+ nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
+ nack->u.isp24.status = ntfy->u.isp24.status;
+ nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
+ nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
+ nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
+ nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
+ nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
+ nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
+ nack->u.isp24.srr_reject_code = srr_reject_code;
+ nack->u.isp24.srr_reject_code_expl = srr_explan;
+ nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
+
+ /* TODO qualify this with EDIF enable */
+ if (ntfy->u.isp24.status_subcode == ELS_PLOGI &&
+ (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) {
+ nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP);
+ }
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe005,
+ "qla_target(%d): Sending 24xx Notify Ack %d\n",
+ vha->vp_idx, nack->u.isp24.status);
+
+ /* Memory Barrier */
+ wmb();
+ qla2x00_start_iocbs(vha, qpair->req);
+}
+
+static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd)
+{
+ struct scsi_qla_host *vha = mcmd->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct abts_resp_to_24xx *resp;
+ __le32 f_ctl;
+ uint32_t h;
+ uint8_t *p;
+ int rc;
+ struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts;
+ struct qla_qpair *qpair = mcmd->qpair;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe006,
+ "Sending task mgmt ABTS response (ha=%p, status=%x)\n",
+ ha, mcmd->fc_tm_rsp);
+
+ rc = qlt_check_reserve_free_req(qpair, 1);
+ if (rc) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe04a,
+ "qla_target(%d): %s failed: unable to allocate request packet\n",
+ vha->vp_idx, __func__);
+ return -EAGAIN;
+ }
+
+ resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr;
+ memset(resp, 0, sizeof(*resp));
+
+ h = qlt_make_handle(qpair);
+ if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
+ /*
+ * CTIO type 7 from the firmware doesn't provide a way to
+ * know the initiator's LOOP ID, hence we can't find
+ * the session and, so, the command.
+ */
+ return -EAGAIN;
+ } else {
+ qpair->req->outstanding_cmds[h] = (srb_t *)mcmd;
+ }
+
+ resp->handle = make_handle(qpair->req->id, h);
+ resp->entry_type = ABTS_RESP_24XX;
+ resp->entry_count = 1;
+ resp->nport_handle = abts->nport_handle;
+ resp->vp_index = vha->vp_idx;
+ resp->sof_type = abts->sof_type;
+ resp->exchange_address = abts->exchange_address;
+ resp->fcp_hdr_le = abts->fcp_hdr_le;
+ f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
+ F_CTL_LAST_SEQ | F_CTL_END_SEQ |
+ F_CTL_SEQ_INITIATIVE);
+ p = (uint8_t *)&f_ctl;
+ resp->fcp_hdr_le.f_ctl[0] = *p++;
+ resp->fcp_hdr_le.f_ctl[1] = *p++;
+ resp->fcp_hdr_le.f_ctl[2] = *p;
+
+ resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
+ resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
+
+ resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
+ if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) {
+ resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
+ resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
+ resp->payload.ba_acct.low_seq_cnt = 0x0000;
+ resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
+ resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
+ resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
+ } else {
+ resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
+ resp->payload.ba_rjt.reason_code =
+ BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
+ /* Other bytes are zero */
+ }
+
+ vha->vha_tgt.qla_tgt->abts_resp_expected++;
+
+ /* Memory Barrier */
+ wmb();
+ if (qpair->reqq_start_iocbs)
+ qpair->reqq_start_iocbs(qpair);
+ else
+ qla2x00_start_iocbs(vha, qpair->req);
+
+ return rc;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
+ struct abts_recv_from_24xx *abts, uint32_t status,
+ bool ids_reversed)
+{
+ struct scsi_qla_host *vha = qpair->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct abts_resp_to_24xx *resp;
+ __le32 f_ctl;
+ uint8_t *p;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe006,
+ "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
+ ha, abts, status);
+
+ resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
+ NULL);
+ if (!resp) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe04a,
+ "qla_target(%d): %s failed: unable to allocate "
+ "request packet", vha->vp_idx, __func__);
+ return;
+ }
+
+ resp->entry_type = ABTS_RESP_24XX;
+ resp->handle = QLA_TGT_SKIP_HANDLE;
+ resp->entry_count = 1;
+ resp->nport_handle = abts->nport_handle;
+ resp->vp_index = vha->vp_idx;
+ resp->sof_type = abts->sof_type;
+ resp->exchange_address = abts->exchange_address;
+ resp->fcp_hdr_le = abts->fcp_hdr_le;
+ f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
+ F_CTL_LAST_SEQ | F_CTL_END_SEQ |
+ F_CTL_SEQ_INITIATIVE);
+ p = (uint8_t *)&f_ctl;
+ resp->fcp_hdr_le.f_ctl[0] = *p++;
+ resp->fcp_hdr_le.f_ctl[1] = *p++;
+ resp->fcp_hdr_le.f_ctl[2] = *p;
+ if (ids_reversed) {
+ resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id;
+ resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id;
+ } else {
+ resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
+ resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
+ }
+ resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
+ if (status == FCP_TMF_CMPL) {
+ resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
+ resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
+ resp->payload.ba_acct.low_seq_cnt = 0x0000;
+ resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
+ resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
+ resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
+ } else {
+ resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
+ resp->payload.ba_rjt.reason_code =
+ BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
+ /* Other bytes are zero */
+ }
+
+ vha->vha_tgt.qla_tgt->abts_resp_expected++;
+
+ /* Memory Barrier */
+ wmb();
+ if (qpair->reqq_start_iocbs)
+ qpair->reqq_start_iocbs(qpair);
+ else
+ qla2x00_start_iocbs(vha, qpair->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
+ struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd)
+{
+ struct ctio7_to_24xx *ctio;
+ u16 tmp;
+ struct abts_recv_from_24xx *entry;
+
+ ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL);
+ if (ctio == NULL) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe04b,
+ "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ return;
+ }
+
+ if (mcmd)
+ /* abts from remote port */
+ entry = &mcmd->orig_iocb.abts;
+ else
+ /* abts from this driver. */
+ entry = (struct abts_recv_from_24xx *)pkt;
+
+ /*
+ * We've got on entrance firmware's response on by us generated
+ * ABTS response. So, in it ID fields are reversed.
+ */
+
+ ctio->entry_type = CTIO_TYPE7;
+ ctio->entry_count = 1;
+ ctio->nport_handle = entry->nport_handle;
+ ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+ ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio->vp_index = vha->vp_idx;
+ ctio->exchange_addr = entry->exchange_addr_to_abort;
+ tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
+
+ if (mcmd) {
+ ctio->initiator_id = entry->fcp_hdr_le.s_id;
+
+ if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID)
+ tmp |= (mcmd->abort_io_attr << 9);
+ else if (qpair->retry_term_cnt & 1)
+ tmp |= (0x4 << 9);
+ } else {
+ ctio->initiator_id = entry->fcp_hdr_le.d_id;
+
+ if (qpair->retry_term_cnt & 1)
+ tmp |= (0x4 << 9);
+ }
+ ctio->u.status1.flags = cpu_to_le16(tmp);
+ ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe007,
+ "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n",
+ le16_to_cpu(ctio->u.status1.flags),
+ le16_to_cpu(ctio->u.status1.ox_id),
+ (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0);
+
+ /* Memory Barrier */
+ wmb();
+ if (qpair->reqq_start_iocbs)
+ qpair->reqq_start_iocbs(qpair);
+ else
+ qla2x00_start_iocbs(vha, qpair->req);
+
+ if (mcmd)
+ qlt_build_abts_resp_iocb(mcmd);
+ else
+ qlt_24xx_send_abts_resp(qpair,
+ (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true);
+
+}
+
+/* drop cmds for the given lun
+ * XXX only looks for cmds on the port through which lun reset was recieved
+ * XXX does not go through the list of other port (which may have cmds
+ * for the same lun)
+ */
+static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id)
+{
+ struct qla_tgt_sess_op *op;
+ struct qla_tgt_cmd *cmd;
+ uint32_t key;
+ unsigned long flags;
+
+ key = sid_to_key(s_id);
+ spin_lock_irqsave(&vha->cmd_list_lock, flags);
+ list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
+ uint32_t op_key;
+ u64 op_lun;
+
+ op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
+ op_lun = scsilun_to_int(
+ (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
+ if (op_key == key && op_lun == lun)
+ op->aborted = true;
+ }
+
+ list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
+ uint32_t cmd_key;
+ u64 cmd_lun;
+
+ cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
+ cmd_lun = scsilun_to_int(
+ (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
+ if (cmd_key == key && cmd_lun == lun)
+ cmd->aborted = 1;
+ }
+ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
+}
+
+static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha,
+ uint64_t unpacked_lun)
+{
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct qla_qpair_hint *h = NULL;
+
+ if (vha->flags.qpairs_available) {
+ h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun);
+ if (!h)
+ h = &tgt->qphints[0];
+ } else {
+ h = &tgt->qphints[0];
+ }
+
+ return h;
+}
+
+static void qlt_do_tmr_work(struct work_struct *work)
+{
+ struct qla_tgt_mgmt_cmd *mcmd =
+ container_of(work, struct qla_tgt_mgmt_cmd, work);
+ struct qla_hw_data *ha = mcmd->vha->hw;
+ int rc;
+ uint32_t tag;
+ unsigned long flags;
+
+ switch (mcmd->tmr_func) {
+ case QLA_TGT_ABTS:
+ tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort);
+ break;
+ default:
+ tag = 0;
+ break;
+ }
+
+ rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun,
+ mcmd->tmr_func, tag);
+
+ if (rc != 0) {
+ spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags);
+ switch (mcmd->tmr_func) {
+ case QLA_TGT_ABTS:
+ mcmd->fc_tm_rsp = FCP_TMF_REJECTED;
+ qlt_build_abts_resp_iocb(mcmd);
+ break;
+ case QLA_TGT_LUN_RESET:
+ case QLA_TGT_CLEAR_TS:
+ case QLA_TGT_ABORT_TS:
+ case QLA_TGT_CLEAR_ACA:
+ case QLA_TGT_TARGET_RESET:
+ qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio,
+ qla_sam_status);
+ break;
+
+ case QLA_TGT_ABORT_ALL:
+ case QLA_TGT_NEXUS_LOSS_SESS:
+ case QLA_TGT_NEXUS_LOSS:
+ qlt_send_notify_ack(mcmd->qpair,
+ &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
+ break;
+ }
+ spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags);
+
+ ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052,
+ "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
+ mcmd->vha->vp_idx, rc);
+ mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+ }
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
+ struct abts_recv_from_24xx *abts, struct fc_port *sess)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_mgmt_cmd *mcmd;
+ struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
+ struct qla_tgt_cmd *abort_cmd;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
+ "qla_target(%d): task abort (tag=%d)\n",
+ vha->vp_idx, abts->exchange_addr_to_abort);
+
+ mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
+ if (mcmd == NULL) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
+ "qla_target(%d): %s: Allocation of ABORT cmd failed",
+ vha->vp_idx, __func__);
+ return -ENOMEM;
+ }
+ memset(mcmd, 0, sizeof(*mcmd));
+ mcmd->cmd_type = TYPE_TGT_TMCMD;
+ mcmd->sess = sess;
+ memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
+ mcmd->reset_count = ha->base_qpair->chip_reset;
+ mcmd->tmr_func = QLA_TGT_ABTS;
+ mcmd->qpair = h->qpair;
+ mcmd->vha = vha;
+
+ /*
+ * LUN is looked up by target-core internally based on the passed
+ * abts->exchange_addr_to_abort tag.
+ */
+ mcmd->se_cmd.cpuid = h->cpuid;
+
+ abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess,
+ le32_to_cpu(abts->exchange_addr_to_abort));
+ if (!abort_cmd) {
+ mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+ return -EIO;
+ }
+ mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun;
+
+ if (abort_cmd->qpair) {
+ mcmd->qpair = abort_cmd->qpair;
+ mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid;
+ mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr;
+ mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID;
+ }
+
+ INIT_WORK(&mcmd->work, qlt_do_tmr_work);
+ queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work);
+
+ return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
+ struct abts_recv_from_24xx *abts)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct fc_port *sess;
+ uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort);
+ be_id_t s_id;
+ int rc;
+ unsigned long flags;
+
+ if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
+ "qla_target(%d): ABTS: Abort Sequence not "
+ "supported\n", vha->vp_idx);
+ qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
+ false);
+ return;
+ }
+
+ if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
+ "qla_target(%d): ABTS: Unknown Exchange "
+ "Address received\n", vha->vp_idx);
+ qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
+ false);
+ return;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
+ "qla_target(%d): task abort (s_id=%x:%x:%x, "
+ "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain,
+ abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag,
+ le32_to_cpu(abts->fcp_hdr_le.parameter));
+
+ s_id = le_id_to_be(abts->fcp_hdr_le.s_id);
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
+ if (!sess) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
+ "qla_target(%d): task abort for non-existent session\n",
+ vha->vp_idx);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+ qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
+ false);
+ return;
+ }
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+
+ if (sess->deleted) {
+ qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
+ false);
+ return;
+ }
+
+ rc = __qlt_24xx_handle_abts(vha, abts, sess);
+ if (rc != 0) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
+ "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
+ vha->vp_idx, rc);
+ qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
+ false);
+ return;
+ }
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
+ struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
+{
+ struct scsi_qla_host *ha = mcmd->vha;
+ struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
+ struct ctio7_to_24xx *ctio;
+ uint16_t temp;
+
+ ql_dbg(ql_dbg_tgt, ha, 0xe008,
+ "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
+ ha, atio, resp_code);
+
+
+ ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
+ if (ctio == NULL) {
+ ql_dbg(ql_dbg_tgt, ha, 0xe04c,
+ "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", ha->vp_idx, __func__);
+ return;
+ }
+
+ ctio->entry_type = CTIO_TYPE7;
+ ctio->entry_count = 1;
+ ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+ ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id);
+ ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio->vp_index = ha->vp_idx;
+ ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
+ ctio->exchange_addr = atio->u.isp24.exchange_addr;
+ temp = (atio->u.isp24.attr << 9)|
+ CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
+ ctio->u.status1.flags = cpu_to_le16(temp);
+ temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
+ ctio->u.status1.ox_id = cpu_to_le16(temp);
+ ctio->u.status1.scsi_status =
+ cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
+ ctio->u.status1.response_len = cpu_to_le16(8);
+ ctio->u.status1.sense_data[0] = resp_code;
+
+ /* Memory Barrier */
+ wmb();
+ if (qpair->reqq_start_iocbs)
+ qpair->reqq_start_iocbs(qpair);
+ else
+ qla2x00_start_iocbs(ha, qpair->req);
+}
+
+void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
+{
+ mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+}
+EXPORT_SYMBOL(qlt_free_mcmd);
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then
+ * reacquire
+ */
+void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
+ uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
+{
+ struct atio_from_isp *atio = &cmd->atio;
+ struct ctio7_to_24xx *ctio;
+ uint16_t temp;
+ struct scsi_qla_host *vha = cmd->vha;
+
+ ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
+ "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
+ "sense_key=%02x, asc=%02x, ascq=%02x",
+ vha, atio, scsi_status, sense_key, asc, ascq);
+
+ ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
+ if (!ctio) {
+ ql_dbg(ql_dbg_async, vha, 0x3067,
+ "qla2x00t(%ld): %s failed: unable to allocate request packet",
+ vha->host_no, __func__);
+ goto out;
+ }
+
+ ctio->entry_type = CTIO_TYPE7;
+ ctio->entry_count = 1;
+ ctio->handle = QLA_TGT_SKIP_HANDLE;
+ ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id);
+ ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio->vp_index = vha->vp_idx;
+ ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
+ ctio->exchange_addr = atio->u.isp24.exchange_addr;
+ temp = (atio->u.isp24.attr << 9) |
+ CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
+ ctio->u.status1.flags = cpu_to_le16(temp);
+ temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
+ ctio->u.status1.ox_id = cpu_to_le16(temp);
+ ctio->u.status1.scsi_status =
+ cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
+ ctio->u.status1.response_len = cpu_to_le16(18);
+ ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
+
+ if (ctio->u.status1.residual != 0)
+ ctio->u.status1.scsi_status |=
+ cpu_to_le16(SS_RESIDUAL_UNDER);
+
+ /* Fixed format sense data. */
+ ctio->u.status1.sense_data[0] = 0x70;
+ ctio->u.status1.sense_data[2] = sense_key;
+ /* Additional sense length */
+ ctio->u.status1.sense_data[7] = 0xa;
+ /* ASC and ASCQ */
+ ctio->u.status1.sense_data[12] = asc;
+ ctio->u.status1.sense_data[13] = ascq;
+
+ /* Memory Barrier */
+ wmb();
+
+ if (qpair->reqq_start_iocbs)
+ qpair->reqq_start_iocbs(qpair);
+ else
+ qla2x00_start_iocbs(vha, qpair->req);
+
+out:
+ return;
+}
+
+/* callback from target fabric module code */
+void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
+{
+ struct scsi_qla_host *vha = mcmd->sess->vha;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+ struct qla_qpair *qpair = mcmd->qpair;
+ bool free_mcmd = true;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
+ "TM response mcmd (%p) status %#x state %#x",
+ mcmd, mcmd->fc_tm_rsp, mcmd->flags);
+
+ spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+
+ if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
+ /*
+ * Either the port is not online or this request was from
+ * previous life, just abort the processing.
+ */
+ ql_dbg(ql_dbg_async, vha, 0xe100,
+ "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
+ vha->flags.online, qla2x00_reset_active(vha),
+ mcmd->reset_count, qpair->chip_reset);
+ ha->tgt.tgt_ops->free_mcmd(mcmd);
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+ return;
+ }
+
+ if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
+ switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) {
+ case ELS_LOGO:
+ case ELS_PRLO:
+ case ELS_TPRLO:
+ ql_dbg(ql_dbg_disc, vha, 0x2106,
+ "TM response logo %8phC status %#x state %#x",
+ mcmd->sess->port_name, mcmd->fc_tm_rsp,
+ mcmd->flags);
+ qlt_schedule_sess_for_deletion(mcmd->sess);
+ break;
+ default:
+ qlt_send_notify_ack(vha->hw->base_qpair,
+ &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
+ break;
+ }
+ } else {
+ if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) {
+ qlt_build_abts_resp_iocb(mcmd);
+ free_mcmd = false;
+ } else
+ qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
+ mcmd->fc_tm_rsp);
+ }
+ /*
+ * Make the callback for ->free_mcmd() to queue_work() and invoke
+ * target_put_sess_cmd() to drop cmd_kref to 1. The final
+ * target_put_sess_cmd() call will be made from TFO->check_stop_free()
+ * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
+ * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
+ * qlt_xmit_tm_rsp() returns here..
+ */
+ if (free_mcmd)
+ ha->tgt.tgt_ops->free_mcmd(mcmd);
+
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+}
+EXPORT_SYMBOL(qlt_xmit_tm_rsp);
+
+/* No locks */
+static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
+{
+ struct qla_tgt_cmd *cmd = prm->cmd;
+
+ BUG_ON(cmd->sg_cnt == 0);
+
+ prm->sg = (struct scatterlist *)cmd->sg;
+ prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg,
+ cmd->sg_cnt, cmd->dma_data_direction);
+ if (unlikely(prm->seg_cnt == 0))
+ goto out_err;
+
+ prm->cmd->sg_mapped = 1;
+
+ if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
+ /*
+ * If greater than four sg entries then we need to allocate
+ * the continuation entries
+ */
+ if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
+ prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
+ QLA_TGT_DATASEGS_PER_CMD_24XX,
+ QLA_TGT_DATASEGS_PER_CONT_24XX);
+ } else {
+ /* DIF */
+ if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
+ (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
+ prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
+ prm->tot_dsds = prm->seg_cnt;
+ } else
+ prm->tot_dsds = prm->seg_cnt;
+
+ if (cmd->prot_sg_cnt) {
+ prm->prot_sg = cmd->prot_sg;
+ prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev,
+ cmd->prot_sg, cmd->prot_sg_cnt,
+ cmd->dma_data_direction);
+ if (unlikely(prm->prot_seg_cnt == 0))
+ goto out_err;
+
+ if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
+ (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
+ /* Dif Bundling not support here */
+ prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
+ cmd->blk_sz);
+ prm->tot_dsds += prm->prot_seg_cnt;
+ } else
+ prm->tot_dsds += prm->prot_seg_cnt;
+ }
+ }
+
+ return 0;
+
+out_err:
+ ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
+ "qla_target(%d): PCI mapping failed: sg_cnt=%d",
+ 0, prm->cmd->sg_cnt);
+ return -1;
+}
+
+static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
+{
+ struct qla_hw_data *ha;
+ struct qla_qpair *qpair;
+
+ if (!cmd->sg_mapped)
+ return;
+
+ qpair = cmd->qpair;
+
+ dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt,
+ cmd->dma_data_direction);
+ cmd->sg_mapped = 0;
+
+ if (cmd->prot_sg_cnt)
+ dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt,
+ cmd->dma_data_direction);
+
+ if (!cmd->ctx)
+ return;
+ ha = vha->hw;
+ if (cmd->ctx_dsd_alloced)
+ qla2x00_clean_dsd_pool(ha, cmd->ctx);
+
+ dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
+}
+
+static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
+ uint32_t req_cnt)
+{
+ uint32_t cnt;
+ struct req_que *req = qpair->req;
+
+ if (req->cnt < (req_cnt + 2)) {
+ cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
+ rd_reg_dword_relaxed(req->req_q_out));
+
+ if (req->ring_index < cnt)
+ req->cnt = cnt - req->ring_index;
+ else
+ req->cnt = req->length - (req->ring_index - cnt);
+
+ if (unlikely(req->cnt < (req_cnt + 2)))
+ return -EAGAIN;
+ }
+
+ req->cnt -= req_cnt;
+
+ return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static inline void *qlt_get_req_pkt(struct req_que *req)
+{
+ /* Adjust ring index. */
+ req->ring_index++;
+ if (req->ring_index == req->length) {
+ req->ring_index = 0;
+ req->ring_ptr = req->ring;
+ } else {
+ req->ring_ptr++;
+ }
+ return (cont_entry_t *)req->ring_ptr;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
+{
+ uint32_t h;
+ int index;
+ uint8_t found = 0;
+ struct req_que *req = qpair->req;
+
+ h = req->current_outstanding_cmd;
+
+ for (index = 1; index < req->num_outstanding_cmds; index++) {
+ h++;
+ if (h == req->num_outstanding_cmds)
+ h = 1;
+
+ if (h == QLA_TGT_SKIP_HANDLE)
+ continue;
+
+ if (!req->outstanding_cmds[h]) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (found) {
+ req->current_outstanding_cmd = h;
+ } else {
+ ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
+ "qla_target(%d): Ran out of empty cmd slots\n",
+ qpair->vha->vp_idx);
+ h = QLA_TGT_NULL_HANDLE;
+ }
+
+ return h;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
+ struct qla_tgt_prm *prm)
+{
+ uint32_t h;
+ struct ctio7_to_24xx *pkt;
+ struct atio_from_isp *atio = &prm->cmd->atio;
+ uint16_t temp;
+ struct qla_tgt_cmd *cmd = prm->cmd;
+
+ pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
+ prm->pkt = pkt;
+ memset(pkt, 0, sizeof(*pkt));
+
+ pkt->entry_type = CTIO_TYPE7;
+ pkt->entry_count = (uint8_t)prm->req_cnt;
+ pkt->vp_index = prm->cmd->vp_idx;
+
+ h = qlt_make_handle(qpair);
+ if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
+ /*
+ * CTIO type 7 from the firmware doesn't provide a way to
+ * know the initiator's LOOP ID, hence we can't find
+ * the session and, so, the command.
+ */
+ return -EAGAIN;
+ } else
+ qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
+
+ pkt->handle = make_handle(qpair->req->id, h);
+ pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
+ pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
+ pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
+ pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
+ pkt->exchange_addr = atio->u.isp24.exchange_addr;
+ temp = atio->u.isp24.attr << 9;
+ pkt->u.status0.flags |= cpu_to_le16(temp);
+ temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
+ pkt->u.status0.ox_id = cpu_to_le16(temp);
+ pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
+
+ if (cmd->edif) {
+ if (cmd->dma_data_direction == DMA_TO_DEVICE)
+ prm->cmd->sess->edif.rx_bytes += cmd->bufflen;
+ if (cmd->dma_data_direction == DMA_FROM_DEVICE)
+ prm->cmd->sess->edif.tx_bytes += cmd->bufflen;
+
+ pkt->u.status0.edif_flags |= EF_EN_EDIF;
+ }
+
+ return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. We have already made sure
+ * that there is sufficient amount of request entries to not drop it.
+ */
+static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
+{
+ int cnt;
+ struct dsd64 *cur_dsd;
+
+ /* Build continuation packets */
+ while (prm->seg_cnt > 0) {
+ cont_a64_entry_t *cont_pkt64 =
+ (cont_a64_entry_t *)qlt_get_req_pkt(
+ prm->cmd->qpair->req);
+
+ /*
+ * Make sure that from cont_pkt64 none of
+ * 64-bit specific fields used for 32-bit
+ * addressing. Cast to (cont_entry_t *) for
+ * that.
+ */
+
+ memset(cont_pkt64, 0, sizeof(*cont_pkt64));
+
+ cont_pkt64->entry_count = 1;
+ cont_pkt64->sys_define = 0;
+
+ cont_pkt64->entry_type = CONTINUE_A64_TYPE;
+ cur_dsd = cont_pkt64->dsd;
+
+ /* Load continuation entry data segments */
+ for (cnt = 0;
+ cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
+ cnt++, prm->seg_cnt--) {
+ append_dsd64(&cur_dsd, prm->sg);
+ prm->sg = sg_next(prm->sg);
+ }
+ }
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. We have already made sure
+ * that there is sufficient amount of request entries to not drop it.
+ */
+static void qlt_load_data_segments(struct qla_tgt_prm *prm)
+{
+ int cnt;
+ struct dsd64 *cur_dsd;
+ struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
+
+ pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
+
+ /* Setup packet address segment pointer */
+ cur_dsd = &pkt24->u.status0.dsd;
+
+ /* Set total data segment count */
+ if (prm->seg_cnt)
+ pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
+
+ if (prm->seg_cnt == 0) {
+ /* No data transfer */
+ cur_dsd->address = 0;
+ cur_dsd->length = 0;
+ return;
+ }
+
+ /* If scatter gather */
+
+ /* Load command entry data segments */
+ for (cnt = 0;
+ (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
+ cnt++, prm->seg_cnt--) {
+ append_dsd64(&cur_dsd, prm->sg);
+ prm->sg = sg_next(prm->sg);
+ }
+
+ qlt_load_cont_data_segments(prm);
+}
+
+static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
+{
+ return cmd->bufflen > 0;
+}
+
+static void qlt_print_dif_err(struct qla_tgt_prm *prm)
+{
+ struct qla_tgt_cmd *cmd;
+ struct scsi_qla_host *vha;
+
+ /* asc 0x10=dif error */
+ if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
+ cmd = prm->cmd;
+ vha = cmd->vha;
+ /* ASCQ */
+ switch (prm->sense_buffer[13]) {
+ case 1:
+ ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
+ "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
+ "se_cmd=%p tag[%x]",
+ cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
+ cmd->atio.u.isp24.exchange_addr);
+ break;
+ case 2:
+ ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
+ "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
+ "se_cmd=%p tag[%x]",
+ cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
+ cmd->atio.u.isp24.exchange_addr);
+ break;
+ case 3:
+ ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
+ "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
+ "se_cmd=%p tag[%x]",
+ cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
+ cmd->atio.u.isp24.exchange_addr);
+ break;
+ default:
+ ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
+ "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
+ "se_cmd=%p tag[%x]",
+ cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
+ cmd->atio.u.isp24.exchange_addr);
+ break;
+ }
+ ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
+ }
+}
+
+/*
+ * Called without ha->hardware_lock held
+ */
+static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
+ struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
+ uint32_t *full_req_cnt)
+{
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ struct qla_qpair *qpair = cmd->qpair;
+
+ prm->cmd = cmd;
+ prm->tgt = cmd->tgt;
+ prm->pkt = NULL;
+ prm->rq_result = scsi_status;
+ prm->sense_buffer = &cmd->sense_buffer[0];
+ prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
+ prm->sg = NULL;
+ prm->seg_cnt = -1;
+ prm->req_cnt = 1;
+ prm->residual = 0;
+ prm->add_status_pkt = 0;
+ prm->prot_sg = NULL;
+ prm->prot_seg_cnt = 0;
+ prm->tot_dsds = 0;
+
+ if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
+ if (qlt_pci_map_calc_cnt(prm) != 0)
+ return -EAGAIN;
+ }
+
+ *full_req_cnt = prm->req_cnt;
+
+ if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
+ prm->residual = se_cmd->residual_count;
+ ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
+ "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
+ prm->residual, se_cmd->tag,
+ se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
+ cmd->bufflen, prm->rq_result);
+ prm->rq_result |= SS_RESIDUAL_UNDER;
+ } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
+ prm->residual = se_cmd->residual_count;
+ ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
+ "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
+ prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
+ se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
+ prm->rq_result |= SS_RESIDUAL_OVER;
+ }
+
+ if (xmit_type & QLA_TGT_XMIT_STATUS) {
+ /*
+ * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
+ * ignored in *xmit_response() below
+ */
+ if (qlt_has_data(cmd)) {
+ if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
+ (IS_FWI2_CAPABLE(cmd->vha->hw) &&
+ (prm->rq_result != 0))) {
+ prm->add_status_pkt = 1;
+ (*full_req_cnt)++;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
+ int sending_sense)
+{
+ if (cmd->qpair->enable_class_2)
+ return 0;
+
+ if (sending_sense)
+ return cmd->conf_compl_supported;
+ else
+ return cmd->qpair->enable_explicit_conf &&
+ cmd->conf_compl_supported;
+}
+
+static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
+ struct qla_tgt_prm *prm)
+{
+ prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
+ (uint32_t)sizeof(ctio->u.status1.sense_data));
+ ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
+ if (qlt_need_explicit_conf(prm->cmd, 0)) {
+ ctio->u.status0.flags |= cpu_to_le16(
+ CTIO7_FLAGS_EXPLICIT_CONFORM |
+ CTIO7_FLAGS_CONFORM_REQ);
+ }
+ ctio->u.status0.residual = cpu_to_le32(prm->residual);
+ ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
+ if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
+ int i;
+
+ if (qlt_need_explicit_conf(prm->cmd, 1)) {
+ if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
+ ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
+ "Skipping EXPLICIT_CONFORM and "
+ "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
+ "non GOOD status\n");
+ goto skip_explict_conf;
+ }
+ ctio->u.status1.flags |= cpu_to_le16(
+ CTIO7_FLAGS_EXPLICIT_CONFORM |
+ CTIO7_FLAGS_CONFORM_REQ);
+ }
+skip_explict_conf:
+ ctio->u.status1.flags &=
+ ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
+ ctio->u.status1.flags |=
+ cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
+ ctio->u.status1.scsi_status |=
+ cpu_to_le16(SS_SENSE_LEN_VALID);
+ ctio->u.status1.sense_length =
+ cpu_to_le16(prm->sense_buffer_len);
+ for (i = 0; i < prm->sense_buffer_len/4; i++) {
+ uint32_t v;
+
+ v = get_unaligned_be32(
+ &((uint32_t *)prm->sense_buffer)[i]);
+ put_unaligned_le32(v,
+ &((uint32_t *)ctio->u.status1.sense_data)[i]);
+ }
+ qlt_print_dif_err(prm);
+
+ } else {
+ ctio->u.status1.flags &=
+ ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
+ ctio->u.status1.flags |=
+ cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
+ ctio->u.status1.sense_length = 0;
+ memset(ctio->u.status1.sense_data, 0,
+ sizeof(ctio->u.status1.sense_data));
+ }
+
+ /* Sense with len > 24, is it possible ??? */
+}
+
+static inline int
+qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
+{
+ switch (se_cmd->prot_op) {
+ case TARGET_PROT_DOUT_INSERT:
+ case TARGET_PROT_DIN_STRIP:
+ if (ql2xenablehba_err_chk >= 1)
+ return 1;
+ break;
+ case TARGET_PROT_DOUT_PASS:
+ case TARGET_PROT_DIN_PASS:
+ if (ql2xenablehba_err_chk >= 2)
+ return 1;
+ break;
+ case TARGET_PROT_DIN_INSERT:
+ case TARGET_PROT_DOUT_STRIP:
+ return 1;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static inline int
+qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
+{
+ switch (se_cmd->prot_op) {
+ case TARGET_PROT_DIN_INSERT:
+ case TARGET_PROT_DOUT_INSERT:
+ case TARGET_PROT_DIN_STRIP:
+ case TARGET_PROT_DOUT_STRIP:
+ case TARGET_PROT_DIN_PASS:
+ case TARGET_PROT_DOUT_PASS:
+ return 1;
+ default:
+ return 0;
+ }
+ return 0;
+}
+
+/*
+ * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
+ */
+static void
+qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
+ uint16_t *pfw_prot_opts)
+{
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
+ scsi_qla_host_t *vha = cmd->tgt->vha;
+ struct qla_hw_data *ha = vha->hw;
+ uint32_t t32 = 0;
+
+ /*
+ * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
+ * have been immplemented by TCM, before AppTag is avail.
+ * Look for modesense_handlers[]
+ */
+ ctx->app_tag = 0;
+ ctx->app_tag_mask[0] = 0x0;
+ ctx->app_tag_mask[1] = 0x0;
+
+ if (IS_PI_UNINIT_CAPABLE(ha)) {
+ if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
+ (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
+ *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
+ else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
+ *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
+ }
+
+ t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
+
+ switch (se_cmd->prot_type) {
+ case TARGET_DIF_TYPE0_PROT:
+ /*
+ * No check for ql2xenablehba_err_chk, as it
+ * would be an I/O error if hba tag generation
+ * is not done.
+ */
+ ctx->ref_tag = cpu_to_le32(lba);
+ /* enable ALL bytes of the ref tag */
+ ctx->ref_tag_mask[0] = 0xff;
+ ctx->ref_tag_mask[1] = 0xff;
+ ctx->ref_tag_mask[2] = 0xff;
+ ctx->ref_tag_mask[3] = 0xff;
+ break;
+ case TARGET_DIF_TYPE1_PROT:
+ /*
+ * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
+ * REF tag, and 16 bit app tag.
+ */
+ ctx->ref_tag = cpu_to_le32(lba);
+ if (!qla_tgt_ref_mask_check(se_cmd) ||
+ !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
+ *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
+ break;
+ }
+ /* enable ALL bytes of the ref tag */
+ ctx->ref_tag_mask[0] = 0xff;
+ ctx->ref_tag_mask[1] = 0xff;
+ ctx->ref_tag_mask[2] = 0xff;
+ ctx->ref_tag_mask[3] = 0xff;
+ break;
+ case TARGET_DIF_TYPE2_PROT:
+ /*
+ * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
+ * tag has to match LBA in CDB + N
+ */
+ ctx->ref_tag = cpu_to_le32(lba);
+ if (!qla_tgt_ref_mask_check(se_cmd) ||
+ !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
+ *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
+ break;
+ }
+ /* enable ALL bytes of the ref tag */
+ ctx->ref_tag_mask[0] = 0xff;
+ ctx->ref_tag_mask[1] = 0xff;
+ ctx->ref_tag_mask[2] = 0xff;
+ ctx->ref_tag_mask[3] = 0xff;
+ break;
+ case TARGET_DIF_TYPE3_PROT:
+ /* For TYPE 3 protection: 16 bit GUARD only */
+ *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
+ ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
+ ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
+ break;
+ }
+}
+
+static inline int
+qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
+{
+ struct dsd64 *cur_dsd;
+ uint32_t transfer_length = 0;
+ uint32_t data_bytes;
+ uint32_t dif_bytes;
+ uint8_t bundling = 1;
+ struct crc_context *crc_ctx_pkt = NULL;
+ struct qla_hw_data *ha;
+ struct ctio_crc2_to_fw *pkt;
+ dma_addr_t crc_ctx_dma;
+ uint16_t fw_prot_opts = 0;
+ struct qla_tgt_cmd *cmd = prm->cmd;
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ uint32_t h;
+ struct atio_from_isp *atio = &prm->cmd->atio;
+ struct qla_tc_param tc;
+ uint16_t t16;
+ scsi_qla_host_t *vha = cmd->vha;
+
+ ha = vha->hw;
+
+ pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
+ prm->pkt = pkt;
+ memset(pkt, 0, sizeof(*pkt));
+
+ ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
+ "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
+ cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
+ prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
+
+ if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
+ (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
+ bundling = 0;
+
+ /* Compute dif len and adjust data len to incude protection */
+ data_bytes = cmd->bufflen;
+ dif_bytes = (data_bytes / cmd->blk_sz) * 8;
+
+ switch (se_cmd->prot_op) {
+ case TARGET_PROT_DIN_INSERT:
+ case TARGET_PROT_DOUT_STRIP:
+ transfer_length = data_bytes;
+ if (cmd->prot_sg_cnt)
+ data_bytes += dif_bytes;
+ break;
+ case TARGET_PROT_DIN_STRIP:
+ case TARGET_PROT_DOUT_INSERT:
+ case TARGET_PROT_DIN_PASS:
+ case TARGET_PROT_DOUT_PASS:
+ transfer_length = data_bytes + dif_bytes;
+ break;
+ default:
+ BUG();
+ break;
+ }
+
+ if (!qlt_hba_err_chk_enabled(se_cmd))
+ fw_prot_opts |= 0x10; /* Disable Guard tag checking */
+ /* HBA error checking enabled */
+ else if (IS_PI_UNINIT_CAPABLE(ha)) {
+ if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
+ (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
+ fw_prot_opts |= PO_DIS_VALD_APP_ESC;
+ else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
+ fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
+ }
+
+ switch (se_cmd->prot_op) {
+ case TARGET_PROT_DIN_INSERT:
+ case TARGET_PROT_DOUT_INSERT:
+ fw_prot_opts |= PO_MODE_DIF_INSERT;
+ break;
+ case TARGET_PROT_DIN_STRIP:
+ case TARGET_PROT_DOUT_STRIP:
+ fw_prot_opts |= PO_MODE_DIF_REMOVE;
+ break;
+ case TARGET_PROT_DIN_PASS:
+ case TARGET_PROT_DOUT_PASS:
+ fw_prot_opts |= PO_MODE_DIF_PASS;
+ /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
+ break;
+ default:/* Normal Request */
+ fw_prot_opts |= PO_MODE_DIF_PASS;
+ break;
+ }
+
+ /* ---- PKT ---- */
+ /* Update entry type to indicate Command Type CRC_2 IOCB */
+ pkt->entry_type = CTIO_CRC2;
+ pkt->entry_count = 1;
+ pkt->vp_index = cmd->vp_idx;
+
+ h = qlt_make_handle(qpair);
+ if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
+ /*
+ * CTIO type 7 from the firmware doesn't provide a way to
+ * know the initiator's LOOP ID, hence we can't find
+ * the session and, so, the command.
+ */
+ return -EAGAIN;
+ } else
+ qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
+
+ pkt->handle = make_handle(qpair->req->id, h);
+ pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
+ pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
+ pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
+ pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
+ pkt->exchange_addr = atio->u.isp24.exchange_addr;
+
+ /* silence compile warning */
+ t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
+ pkt->ox_id = cpu_to_le16(t16);
+
+ t16 = (atio->u.isp24.attr << 9);
+ pkt->flags |= cpu_to_le16(t16);
+ pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
+
+ /* Set transfer direction */
+ if (cmd->dma_data_direction == DMA_TO_DEVICE)
+ pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
+ else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
+ pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
+
+ pkt->dseg_count = cpu_to_le16(prm->tot_dsds);
+ /* Fibre channel byte count */
+ pkt->transfer_length = cpu_to_le32(transfer_length);
+
+ /* ----- CRC context -------- */
+
+ /* Allocate CRC context from global pool */
+ crc_ctx_pkt = cmd->ctx =
+ dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
+
+ if (!crc_ctx_pkt)
+ goto crc_queuing_error;
+
+ crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
+ INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
+
+ /* Set handle */
+ crc_ctx_pkt->handle = pkt->handle;
+
+ qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
+
+ put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address);
+ pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW);
+
+ if (!bundling) {
+ cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0];
+ } else {
+ /*
+ * Configure Bundling if we need to fetch interlaving
+ * protection PCI accesses
+ */
+ fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
+ crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
+ crc_ctx_pkt->u.bundling.dseg_count =
+ cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
+ cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0];
+ }
+
+ /* Finish the common fields of CRC pkt */
+ crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
+ crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
+ crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
+ crc_ctx_pkt->guard_seed = cpu_to_le16(0);
+
+ memset((uint8_t *)&tc, 0 , sizeof(tc));
+ tc.vha = vha;
+ tc.blk_sz = cmd->blk_sz;
+ tc.bufflen = cmd->bufflen;
+ tc.sg = cmd->sg;
+ tc.prot_sg = cmd->prot_sg;
+ tc.ctx = crc_ctx_pkt;
+ tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
+
+ /* Walks data segments */
+ pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
+
+ if (!bundling && prm->prot_seg_cnt) {
+ if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
+ prm->tot_dsds, &tc))
+ goto crc_queuing_error;
+ } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
+ (prm->tot_dsds - prm->prot_seg_cnt), &tc))
+ goto crc_queuing_error;
+
+ if (bundling && prm->prot_seg_cnt) {
+ /* Walks dif segments */
+ pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
+
+ cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd;
+ if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
+ prm->prot_seg_cnt, cmd))
+ goto crc_queuing_error;
+ }
+ return QLA_SUCCESS;
+
+crc_queuing_error:
+ /* Cleanup will be performed by the caller */
+ qpair->req->outstanding_cmds[h] = NULL;
+
+ return QLA_FUNCTION_FAILED;
+}
+
+/*
+ * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
+ * QLA_TGT_XMIT_STATUS for >= 24xx silicon
+ */
+int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
+ uint8_t scsi_status)
+{
+ struct scsi_qla_host *vha = cmd->vha;
+ struct qla_qpair *qpair = cmd->qpair;
+ struct ctio7_to_24xx *pkt;
+ struct qla_tgt_prm prm;
+ uint32_t full_req_cnt = 0;
+ unsigned long flags = 0;
+ int res;
+
+ if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
+ (cmd->sess && cmd->sess->deleted)) {
+ cmd->state = QLA_TGT_STATE_PROCESSED;
+ return 0;
+ }
+
+ ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
+ "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
+ (xmit_type & QLA_TGT_XMIT_STATUS) ?
+ 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
+ &cmd->se_cmd, qpair->id);
+
+ res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
+ &full_req_cnt);
+ if (unlikely(res != 0)) {
+ return res;
+ }
+
+ spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+
+ if (xmit_type == QLA_TGT_XMIT_STATUS)
+ qpair->tgt_counters.core_qla_snd_status++;
+ else
+ qpair->tgt_counters.core_qla_que_buf++;
+
+ if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
+ /*
+ * Either the port is not online or this request was from
+ * previous life, just abort the processing.
+ */
+ cmd->state = QLA_TGT_STATE_PROCESSED;
+ ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
+ "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
+ vha->flags.online, qla2x00_reset_active(vha),
+ cmd->reset_count, qpair->chip_reset);
+ res = 0;
+ goto out_unmap_unlock;
+ }
+
+ /* Does F/W have an IOCBs for this request */
+ res = qlt_check_reserve_free_req(qpair, full_req_cnt);
+ if (unlikely(res))
+ goto out_unmap_unlock;
+
+ if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
+ res = qlt_build_ctio_crc2_pkt(qpair, &prm);
+ else
+ res = qlt_24xx_build_ctio_pkt(qpair, &prm);
+ if (unlikely(res != 0)) {
+ qpair->req->cnt += full_req_cnt;
+ goto out_unmap_unlock;
+ }
+
+ pkt = (struct ctio7_to_24xx *)prm.pkt;
+
+ if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
+ pkt->u.status0.flags |=
+ cpu_to_le16(CTIO7_FLAGS_DATA_IN |
+ CTIO7_FLAGS_STATUS_MODE_0);
+
+ if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
+ qlt_load_data_segments(&prm);
+
+ if (prm.add_status_pkt == 0) {
+ if (xmit_type & QLA_TGT_XMIT_STATUS) {
+ pkt->u.status0.scsi_status =
+ cpu_to_le16(prm.rq_result);
+ if (!cmd->edif)
+ pkt->u.status0.residual =
+ cpu_to_le32(prm.residual);
+
+ pkt->u.status0.flags |= cpu_to_le16(
+ CTIO7_FLAGS_SEND_STATUS);
+ if (qlt_need_explicit_conf(cmd, 0)) {
+ pkt->u.status0.flags |=
+ cpu_to_le16(
+ CTIO7_FLAGS_EXPLICIT_CONFORM |
+ CTIO7_FLAGS_CONFORM_REQ);
+ }
+ }
+
+ } else {
+ /*
+ * We have already made sure that there is sufficient
+ * amount of request entries to not drop HW lock in
+ * req_pkt().
+ */
+ struct ctio7_to_24xx *ctio =
+ (struct ctio7_to_24xx *)qlt_get_req_pkt(
+ qpair->req);
+
+ ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
+ "Building additional status packet 0x%p.\n",
+ ctio);
+
+ /*
+ * T10Dif: ctio_crc2_to_fw overlay ontop of
+ * ctio7_to_24xx
+ */
+ memcpy(ctio, pkt, sizeof(*ctio));
+ /* reset back to CTIO7 */
+ ctio->entry_count = 1;
+ ctio->entry_type = CTIO_TYPE7;
+ ctio->dseg_count = 0;
+ ctio->u.status1.flags &= ~cpu_to_le16(
+ CTIO7_FLAGS_DATA_IN);
+
+ /* Real finish is ctio_m1's finish */
+ pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
+ pkt->u.status0.flags |= cpu_to_le16(
+ CTIO7_FLAGS_DONT_RET_CTIO);
+
+ /* qlt_24xx_init_ctio_to_isp will correct
+ * all neccessary fields that's part of CTIO7.
+ * There should be no residual of CTIO-CRC2 data.
+ */
+ qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
+ &prm);
+ }
+ } else
+ qlt_24xx_init_ctio_to_isp(pkt, &prm);
+
+
+ cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
+ cmd->cmd_sent_to_fw = 1;
+ cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
+
+ /* Memory Barrier */
+ wmb();
+ if (qpair->reqq_start_iocbs)
+ qpair->reqq_start_iocbs(qpair);
+ else
+ qla2x00_start_iocbs(vha, qpair->req);
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+
+ return 0;
+
+out_unmap_unlock:
+ qlt_unmap_sg(vha, cmd);
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(qlt_xmit_response);
+
+int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
+{
+ struct ctio7_to_24xx *pkt;
+ struct scsi_qla_host *vha = cmd->vha;
+ struct qla_tgt *tgt = cmd->tgt;
+ struct qla_tgt_prm prm;
+ unsigned long flags = 0;
+ int res = 0;
+ struct qla_qpair *qpair = cmd->qpair;
+
+ memset(&prm, 0, sizeof(prm));
+ prm.cmd = cmd;
+ prm.tgt = tgt;
+ prm.sg = NULL;
+ prm.req_cnt = 1;
+
+ if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
+ (cmd->sess && cmd->sess->deleted)) {
+ /*
+ * Either the port is not online or this request was from
+ * previous life, just abort the processing.
+ */
+ cmd->aborted = 1;
+ cmd->write_data_transferred = 0;
+ cmd->state = QLA_TGT_STATE_DATA_IN;
+ vha->hw->tgt.tgt_ops->handle_data(cmd);
+ ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
+ "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
+ vha->flags.online, qla2x00_reset_active(vha),
+ cmd->reset_count, qpair->chip_reset);
+ return 0;
+ }
+
+ /* Calculate number of entries and segments required */
+ if (qlt_pci_map_calc_cnt(&prm) != 0)
+ return -EAGAIN;
+
+ spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+ /* Does F/W have an IOCBs for this request */
+ res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
+ if (res != 0)
+ goto out_unlock_free_unmap;
+ if (cmd->se_cmd.prot_op)
+ res = qlt_build_ctio_crc2_pkt(qpair, &prm);
+ else
+ res = qlt_24xx_build_ctio_pkt(qpair, &prm);
+
+ if (unlikely(res != 0)) {
+ qpair->req->cnt += prm.req_cnt;
+ goto out_unlock_free_unmap;
+ }
+
+ pkt = (struct ctio7_to_24xx *)prm.pkt;
+ pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
+ CTIO7_FLAGS_STATUS_MODE_0);
+
+ if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
+ qlt_load_data_segments(&prm);
+
+ cmd->state = QLA_TGT_STATE_NEED_DATA;
+ cmd->cmd_sent_to_fw = 1;
+ cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
+
+ /* Memory Barrier */
+ wmb();
+ if (qpair->reqq_start_iocbs)
+ qpair->reqq_start_iocbs(qpair);
+ else
+ qla2x00_start_iocbs(vha, qpair->req);
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+
+ return res;
+
+out_unlock_free_unmap:
+ qlt_unmap_sg(vha, cmd);
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(qlt_rdy_to_xfer);
+
+
+/*
+ * it is assumed either hardware_lock or qpair lock is held.
+ */
+static void
+qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
+ struct ctio_crc_from_fw *sts)
+{
+ uint8_t *ap = &sts->actual_dif[0];
+ uint8_t *ep = &sts->expected_dif[0];
+ uint64_t lba = cmd->se_cmd.t_task_lba;
+ uint8_t scsi_status, sense_key, asc, ascq;
+ unsigned long flags;
+ struct scsi_qla_host *vha = cmd->vha;
+
+ cmd->trc_flags |= TRC_DIF_ERR;
+
+ cmd->a_guard = get_unaligned_be16(ap + 0);
+ cmd->a_app_tag = get_unaligned_be16(ap + 2);
+ cmd->a_ref_tag = get_unaligned_be32(ap + 4);
+
+ cmd->e_guard = get_unaligned_be16(ep + 0);
+ cmd->e_app_tag = get_unaligned_be16(ep + 2);
+ cmd->e_ref_tag = get_unaligned_be32(ep + 4);
+
+ ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
+ "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
+
+ scsi_status = sense_key = asc = ascq = 0;
+
+ /* check appl tag */
+ if (cmd->e_app_tag != cmd->a_app_tag) {
+ ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
+ "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]",
+ cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
+ cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
+ cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
+ cmd->atio.u.isp24.fcp_hdr.ox_id);
+
+ cmd->dif_err_code = DIF_ERR_APP;
+ scsi_status = SAM_STAT_CHECK_CONDITION;
+ sense_key = ABORTED_COMMAND;
+ asc = 0x10;
+ ascq = 0x2;
+ }
+
+ /* check ref tag */
+ if (cmd->e_ref_tag != cmd->a_ref_tag) {
+ ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
+ "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ",
+ cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
+ cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
+ cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
+ cmd->atio.u.isp24.fcp_hdr.ox_id);
+
+ cmd->dif_err_code = DIF_ERR_REF;
+ scsi_status = SAM_STAT_CHECK_CONDITION;
+ sense_key = ABORTED_COMMAND;
+ asc = 0x10;
+ ascq = 0x3;
+ goto out;
+ }
+
+ /* check guard */
+ if (cmd->e_guard != cmd->a_guard) {
+ ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
+ "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]",
+ cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
+ cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
+ cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
+ cmd->atio.u.isp24.fcp_hdr.ox_id);
+
+ cmd->dif_err_code = DIF_ERR_GRD;
+ scsi_status = SAM_STAT_CHECK_CONDITION;
+ sense_key = ABORTED_COMMAND;
+ asc = 0x10;
+ ascq = 0x1;
+ }
+out:
+ switch (cmd->state) {
+ case QLA_TGT_STATE_NEED_DATA:
+ /* handle_data will load DIF error code */
+ cmd->state = QLA_TGT_STATE_DATA_IN;
+ vha->hw->tgt.tgt_ops->handle_data(cmd);
+ break;
+ default:
+ spin_lock_irqsave(&cmd->cmd_lock, flags);
+ if (cmd->aborted) {
+ spin_unlock_irqrestore(&cmd->cmd_lock, flags);
+ vha->hw->tgt.tgt_ops->free_cmd(cmd);
+ break;
+ }
+ spin_unlock_irqrestore(&cmd->cmd_lock, flags);
+
+ qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
+ ascq);
+ /* assume scsi status gets out on the wire.
+ * Will not wait for completion.
+ */
+ vha->hw->tgt.tgt_ops->free_cmd(cmd);
+ break;
+ }
+}
+
+/* If hardware_lock held on entry, might drop it, then reaquire */
+/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
+static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *ntfy)
+{
+ struct nack_to_isp *nack;
+ struct qla_hw_data *ha = vha->hw;
+ request_t *pkt;
+ int ret = 0;
+
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
+ "Sending TERM ELS CTIO (ha=%p)\n", ha);
+
+ pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
+ if (pkt == NULL) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe080,
+ "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ return -ENOMEM;
+ }
+
+ pkt->entry_type = NOTIFY_ACK_TYPE;
+ pkt->entry_count = 1;
+ pkt->handle = QLA_TGT_SKIP_HANDLE;
+
+ nack = (struct nack_to_isp *)pkt;
+ nack->ox_id = ntfy->ox_id;
+
+ nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
+ if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
+ nack->u.isp24.flags = ntfy->u.isp24.flags &
+ cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
+ }
+
+ /* terminate */
+ nack->u.isp24.flags |=
+ __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
+
+ nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
+ nack->u.isp24.status = ntfy->u.isp24.status;
+ nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
+ nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
+ nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
+ nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
+ nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
+ nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
+
+ qla2x00_start_iocbs(vha, vha->req);
+ return ret;
+}
+
+static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *imm, int ha_locked)
+{
+ int rc;
+
+ WARN_ON_ONCE(!ha_locked);
+ rc = __qlt_send_term_imm_notif(vha, imm);
+ pr_debug("rc = %d\n", rc);
+}
+
+/*
+ * If hardware_lock held on entry, might drop it, then reaquire
+ * This function sends the appropriate CTIO to ISP 2xxx or 24xx
+ */
+static int __qlt_send_term_exchange(struct qla_qpair *qpair,
+ struct qla_tgt_cmd *cmd,
+ struct atio_from_isp *atio)
+{
+ struct scsi_qla_host *vha = qpair->vha;
+ struct ctio7_to_24xx *ctio24;
+ struct qla_hw_data *ha = vha->hw;
+ request_t *pkt;
+ int ret = 0;
+ uint16_t temp;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
+
+ if (cmd)
+ vha = cmd->vha;
+
+ pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
+ if (pkt == NULL) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe050,
+ "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ return -ENOMEM;
+ }
+
+ if (cmd != NULL) {
+ if (cmd->state < QLA_TGT_STATE_PROCESSED) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe051,
+ "qla_target(%d): Terminating cmd %p with "
+ "incorrect state %d\n", vha->vp_idx, cmd,
+ cmd->state);
+ } else
+ ret = 1;
+ }
+
+ qpair->tgt_counters.num_term_xchg_sent++;
+ pkt->entry_count = 1;
+ pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+
+ ctio24 = (struct ctio7_to_24xx *)pkt;
+ ctio24->entry_type = CTIO_TYPE7;
+ ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED);
+ ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio24->vp_index = vha->vp_idx;
+ ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
+ ctio24->exchange_addr = atio->u.isp24.exchange_addr;
+ temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
+ CTIO7_FLAGS_TERMINATE;
+ ctio24->u.status1.flags = cpu_to_le16(temp);
+ temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
+ ctio24->u.status1.ox_id = cpu_to_le16(temp);
+
+ /* Memory Barrier */
+ wmb();
+ if (qpair->reqq_start_iocbs)
+ qpair->reqq_start_iocbs(qpair);
+ else
+ qla2x00_start_iocbs(vha, qpair->req);
+ return ret;
+}
+
+static void qlt_send_term_exchange(struct qla_qpair *qpair,
+ struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
+ int ul_abort)
+{
+ struct scsi_qla_host *vha;
+ unsigned long flags = 0;
+ int rc;
+
+ /* why use different vha? NPIV */
+ if (cmd)
+ vha = cmd->vha;
+ else
+ vha = qpair->vha;
+
+ if (ha_locked) {
+ rc = __qlt_send_term_exchange(qpair, cmd, atio);
+ if (rc == -ENOMEM)
+ qlt_alloc_qfull_cmd(vha, atio, 0, 0);
+ goto done;
+ }
+ spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+ rc = __qlt_send_term_exchange(qpair, cmd, atio);
+ if (rc == -ENOMEM)
+ qlt_alloc_qfull_cmd(vha, atio, 0, 0);
+
+done:
+ if (cmd && !ul_abort && !cmd->aborted) {
+ if (cmd->sg_mapped)
+ qlt_unmap_sg(vha, cmd);
+ vha->hw->tgt.tgt_ops->free_cmd(cmd);
+ }
+
+ if (!ha_locked)
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+
+ return;
+}
+
+static void qlt_init_term_exchange(struct scsi_qla_host *vha)
+{
+ struct list_head free_list;
+ struct qla_tgt_cmd *cmd, *tcmd;
+
+ vha->hw->tgt.leak_exchg_thresh_hold =
+ (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
+
+ cmd = tcmd = NULL;
+ if (!list_empty(&vha->hw->tgt.q_full_list)) {
+ INIT_LIST_HEAD(&free_list);
+ list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
+
+ list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
+ list_del(&cmd->cmd_list);
+ /* This cmd was never sent to TCM. There is no need
+ * to schedule free or call free_cmd
+ */
+ qlt_free_cmd(cmd);
+ vha->hw->tgt.num_qfull_cmds_alloc--;
+ }
+ }
+ vha->hw->tgt.num_qfull_cmds_dropped = 0;
+}
+
+static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
+{
+ uint32_t total_leaked;
+
+ total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
+
+ if (vha->hw->tgt.leak_exchg_thresh_hold &&
+ (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe079,
+ "Chip reset due to exchange starvation: %d/%d.\n",
+ total_leaked, vha->hw->cur_fw_xcb_count);
+
+ if (IS_P3P_TYPE(vha->hw))
+ set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
+ else
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ }
+
+}
+
+int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
+{
+ struct qla_tgt *tgt = cmd->tgt;
+ struct scsi_qla_host *vha = tgt->vha;
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ unsigned long flags;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
+ "qla_target(%d): terminating exchange for aborted cmd=%p "
+ "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
+ se_cmd->tag);
+
+ spin_lock_irqsave(&cmd->cmd_lock, flags);
+ if (cmd->aborted) {
+ if (cmd->sg_mapped)
+ qlt_unmap_sg(vha, cmd);
+
+ spin_unlock_irqrestore(&cmd->cmd_lock, flags);
+ /*
+ * It's normal to see 2 calls in this path:
+ * 1) XFER Rdy completion + CMD_T_ABORT
+ * 2) TCM TMR - drain_state_list
+ */
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
+ "multiple abort. %p transport_state %x, t_state %x, "
+ "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
+ cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
+ return -EIO;
+ }
+ cmd->aborted = 1;
+ cmd->trc_flags |= TRC_ABORT;
+ spin_unlock_irqrestore(&cmd->cmd_lock, flags);
+
+ qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
+ return 0;
+}
+EXPORT_SYMBOL(qlt_abort_cmd);
+
+void qlt_free_cmd(struct qla_tgt_cmd *cmd)
+{
+ struct fc_port *sess = cmd->sess;
+
+ ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
+ "%s: se_cmd[%p] ox_id %04x\n",
+ __func__, &cmd->se_cmd,
+ be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
+
+ BUG_ON(cmd->cmd_in_wq);
+
+ if (!cmd->q_full)
+ qlt_decr_num_pend_cmds(cmd->vha);
+
+ BUG_ON(cmd->sg_mapped);
+ cmd->jiffies_at_free = get_jiffies_64();
+
+ if (!sess || !sess->se_sess) {
+ WARN_ON(1);
+ return;
+ }
+ cmd->jiffies_at_free = get_jiffies_64();
+ cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
+}
+EXPORT_SYMBOL(qlt_free_cmd);
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
+ struct qla_tgt_cmd *cmd, uint32_t status)
+{
+ int term = 0;
+ struct scsi_qla_host *vha = qpair->vha;
+
+ if (cmd->se_cmd.prot_op)
+ ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
+ "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
+ "se_cmd=%p tag[%x] op %#x/%s",
+ cmd->lba, cmd->lba,
+ cmd->num_blks, &cmd->se_cmd,
+ cmd->atio.u.isp24.exchange_addr,
+ cmd->se_cmd.prot_op,
+ prot_op_str(cmd->se_cmd.prot_op));
+
+ if (ctio != NULL) {
+ struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
+
+ term = !(c->flags &
+ cpu_to_le16(OF_TERM_EXCH));
+ } else
+ term = 1;
+
+ if (term)
+ qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
+
+ return term;
+}
+
+
+/* ha->hardware_lock supposed to be held on entry */
+static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
+ struct rsp_que *rsp, uint32_t handle, void *ctio)
+{
+ void *cmd = NULL;
+ struct req_que *req;
+ int qid = GET_QID(handle);
+ uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
+
+ if (unlikely(h == QLA_TGT_SKIP_HANDLE))
+ return NULL;
+
+ if (qid == rsp->req->id) {
+ req = rsp->req;
+ } else if (vha->hw->req_q_map[qid]) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
+ "qla_target(%d): CTIO completion with different QID %d handle %x\n",
+ vha->vp_idx, rsp->id, handle);
+ req = vha->hw->req_q_map[qid];
+ } else {
+ return NULL;
+ }
+
+ h &= QLA_CMD_HANDLE_MASK;
+
+ if (h != QLA_TGT_NULL_HANDLE) {
+ if (unlikely(h >= req->num_outstanding_cmds)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe052,
+ "qla_target(%d): Wrong handle %x received\n",
+ vha->vp_idx, handle);
+ return NULL;
+ }
+
+ cmd = req->outstanding_cmds[h];
+ if (unlikely(cmd == NULL)) {
+ ql_dbg(ql_dbg_async, vha, 0xe053,
+ "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
+ vha->vp_idx, handle, req->id, rsp->id);
+ return NULL;
+ }
+ req->outstanding_cmds[h] = NULL;
+ } else if (ctio != NULL) {
+ /* We can't get loop ID from CTIO7 */
+ ql_dbg(ql_dbg_tgt, vha, 0xe054,
+ "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
+ "support NULL handles\n", vha->vp_idx);
+ return NULL;
+ }
+
+ return cmd;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
+ struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct se_cmd *se_cmd;
+ struct qla_tgt_cmd *cmd;
+ struct qla_qpair *qpair = rsp->qpair;
+
+ if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
+ /* That could happen only in case of an error/reset/abort */
+ if (status != CTIO_SUCCESS) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
+ "Intermediate CTIO received"
+ " (status %x)\n", status);
+ }
+ return;
+ }
+
+ cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
+ if (cmd == NULL)
+ return;
+
+ if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) &&
+ cmd->sess) {
+ qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess,
+ (struct ctio7_from_24xx *)ctio);
+ }
+
+ se_cmd = &cmd->se_cmd;
+ cmd->cmd_sent_to_fw = 0;
+
+ qlt_unmap_sg(vha, cmd);
+
+ if (unlikely(status != CTIO_SUCCESS)) {
+ switch (status & 0xFFFF) {
+ case CTIO_INVALID_RX_ID:
+ if (printk_ratelimit())
+ dev_info(&vha->hw->pdev->dev,
+ "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n",
+ vha->vp_idx, cmd->atio.u.isp24.attr,
+ ((cmd->ctio_flags >> 9) & 0xf),
+ cmd->ctio_flags);
+
+ break;
+ case CTIO_LIP_RESET:
+ case CTIO_TARGET_RESET:
+ case CTIO_ABORTED:
+ /* driver request abort via Terminate exchange */
+ case CTIO_TIMEOUT:
+ /* They are OK */
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
+ "qla_target(%d): CTIO with "
+ "status %#x received, state %x, se_cmd %p, "
+ "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
+ "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
+ status, cmd->state, se_cmd);
+ break;
+
+ case CTIO_PORT_LOGGED_OUT:
+ case CTIO_PORT_UNAVAILABLE:
+ {
+ int logged_out =
+ (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
+ "qla_target(%d): CTIO with %s status %x "
+ "received (state %x, se_cmd %p)\n", vha->vp_idx,
+ logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
+ status, cmd->state, se_cmd);
+
+ if (logged_out && cmd->sess) {
+ /*
+ * Session is already logged out, but we need
+ * to notify initiator, who's not aware of this
+ */
+ cmd->sess->send_els_logo = 1;
+ ql_dbg(ql_dbg_disc, vha, 0x20f8,
+ "%s %d %8phC post del sess\n",
+ __func__, __LINE__, cmd->sess->port_name);
+
+ qlt_schedule_sess_for_deletion(cmd->sess);
+ }
+ break;
+ }
+ case CTIO_DIF_ERROR: {
+ struct ctio_crc_from_fw *crc =
+ (struct ctio_crc_from_fw *)ctio;
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
+ "qla_target(%d): CTIO with DIF_ERROR status %x "
+ "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
+ "expect_dif[0x%llx]\n",
+ vha->vp_idx, status, cmd->state, se_cmd,
+ *((u64 *)&crc->actual_dif[0]),
+ *((u64 *)&crc->expected_dif[0]));
+
+ qlt_handle_dif_error(qpair, cmd, ctio);
+ return;
+ }
+
+ case CTIO_FAST_AUTH_ERR:
+ case CTIO_FAST_INCOMP_PAD_LEN:
+ case CTIO_FAST_INVALID_REQ:
+ case CTIO_FAST_SPI_ERR:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
+ "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n",
+ vha->vp_idx, status, cmd->state, se_cmd);
+ break;
+
+ default:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
+ "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
+ vha->vp_idx, status, cmd->state, se_cmd);
+ break;
+ }
+
+
+ /* "cmd->aborted" means
+ * cmd is already aborted/terminated, we don't
+ * need to terminate again. The exchange is already
+ * cleaned up/freed at FW level. Just cleanup at driver
+ * level.
+ */
+ if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
+ (!cmd->aborted)) {
+ cmd->trc_flags |= TRC_CTIO_ERR;
+ if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
+ return;
+ }
+ }
+
+ if (cmd->state == QLA_TGT_STATE_PROCESSED) {
+ cmd->trc_flags |= TRC_CTIO_DONE;
+ } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
+ cmd->state = QLA_TGT_STATE_DATA_IN;
+
+ if (status == CTIO_SUCCESS)
+ cmd->write_data_transferred = 1;
+
+ ha->tgt.tgt_ops->handle_data(cmd);
+ return;
+ } else if (cmd->aborted) {
+ cmd->trc_flags |= TRC_CTIO_ABORTED;
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
+ "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
+ } else {
+ cmd->trc_flags |= TRC_CTIO_STRANGE;
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
+ "qla_target(%d): A command in state (%d) should "
+ "not return a CTIO complete\n", vha->vp_idx, cmd->state);
+ }
+
+ if (unlikely(status != CTIO_SUCCESS) &&
+ !cmd->aborted) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
+ dump_stack();
+ }
+
+ ha->tgt.tgt_ops->free_cmd(cmd);
+}
+
+static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
+ uint8_t task_codes)
+{
+ int fcp_task_attr;
+
+ switch (task_codes) {
+ case ATIO_SIMPLE_QUEUE:
+ fcp_task_attr = TCM_SIMPLE_TAG;
+ break;
+ case ATIO_HEAD_OF_QUEUE:
+ fcp_task_attr = TCM_HEAD_TAG;
+ break;
+ case ATIO_ORDERED_QUEUE:
+ fcp_task_attr = TCM_ORDERED_TAG;
+ break;
+ case ATIO_ACA_QUEUE:
+ fcp_task_attr = TCM_ACA_TAG;
+ break;
+ case ATIO_UNTAGGED:
+ fcp_task_attr = TCM_SIMPLE_TAG;
+ break;
+ default:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
+ "qla_target: unknown task code %x, use ORDERED instead\n",
+ task_codes);
+ fcp_task_attr = TCM_ORDERED_TAG;
+ break;
+ }
+
+ return fcp_task_attr;
+}
+
+/*
+ * Process context for I/O path into tcm_qla2xxx code
+ */
+static void __qlt_do_work(struct qla_tgt_cmd *cmd)
+{
+ scsi_qla_host_t *vha = cmd->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct fc_port *sess = cmd->sess;
+ struct atio_from_isp *atio = &cmd->atio;
+ unsigned char *cdb;
+ unsigned long flags;
+ uint32_t data_length;
+ int ret, fcp_task_attr, data_dir, bidi = 0;
+ struct qla_qpair *qpair = cmd->qpair;
+
+ cmd->cmd_in_wq = 0;
+ cmd->trc_flags |= TRC_DO_WORK;
+
+ if (cmd->aborted) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
+ "cmd with tag %u is aborted\n",
+ cmd->atio.u.isp24.exchange_addr);
+ goto out_term;
+ }
+
+ spin_lock_init(&cmd->cmd_lock);
+ cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
+ cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr);
+
+ if (atio->u.isp24.fcp_cmnd.rddata &&
+ atio->u.isp24.fcp_cmnd.wrdata) {
+ bidi = 1;
+ data_dir = DMA_TO_DEVICE;
+ } else if (atio->u.isp24.fcp_cmnd.rddata)
+ data_dir = DMA_FROM_DEVICE;
+ else if (atio->u.isp24.fcp_cmnd.wrdata)
+ data_dir = DMA_TO_DEVICE;
+ else
+ data_dir = DMA_NONE;
+
+ fcp_task_attr = qlt_get_fcp_task_attr(vha,
+ atio->u.isp24.fcp_cmnd.task_attr);
+ data_length = get_datalen_for_atio(atio);
+
+ ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
+ fcp_task_attr, data_dir, bidi);
+ if (ret != 0)
+ goto out_term;
+ /*
+ * Drop extra session reference from qlt_handle_cmd_for_atio().
+ */
+ ha->tgt.tgt_ops->put_sess(sess);
+ return;
+
+out_term:
+ ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
+ /*
+ * cmd has not sent to target yet, so pass NULL as the second
+ * argument to qlt_send_term_exchange() and free the memory here.
+ */
+ cmd->trc_flags |= TRC_DO_WORK_ERR;
+ spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+ qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
+
+ qlt_decr_num_pend_cmds(vha);
+ cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+
+ ha->tgt.tgt_ops->put_sess(sess);
+}
+
+static void qlt_do_work(struct work_struct *work)
+{
+ struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+ scsi_qla_host_t *vha = cmd->vha;
+ unsigned long flags;
+
+ spin_lock_irqsave(&vha->cmd_list_lock, flags);
+ list_del(&cmd->cmd_list);
+ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
+
+ __qlt_do_work(cmd);
+}
+
+void qlt_clr_qp_table(struct scsi_qla_host *vha)
+{
+ unsigned long flags;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ void *node;
+ u64 key = 0;
+
+ ql_log(ql_log_info, vha, 0x706c,
+ "User update Number of Active Qpairs %d\n",
+ ha->tgt.num_act_qpairs);
+
+ spin_lock_irqsave(&ha->tgt.atio_lock, flags);
+
+ btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
+ btree_remove64(&tgt->lun_qpair_map, key);
+
+ ha->base_qpair->lun_cnt = 0;
+ for (key = 0; key < ha->max_qpairs; key++)
+ if (ha->queue_pair_map[key])
+ ha->queue_pair_map[key]->lun_cnt = 0;
+
+ spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
+}
+
+static void qlt_assign_qpair(struct scsi_qla_host *vha,
+ struct qla_tgt_cmd *cmd)
+{
+ struct qla_qpair *qpair, *qp;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct qla_qpair_hint *h;
+
+ if (vha->flags.qpairs_available) {
+ h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
+ if (unlikely(!h)) {
+ /* spread lun to qpair ratio evently */
+ int lcnt = 0, rc;
+ struct scsi_qla_host *base_vha =
+ pci_get_drvdata(vha->hw->pdev);
+
+ qpair = vha->hw->base_qpair;
+ if (qpair->lun_cnt == 0) {
+ qpair->lun_cnt++;
+ h = qla_qpair_to_hint(tgt, qpair);
+ BUG_ON(!h);
+ rc = btree_insert64(&tgt->lun_qpair_map,
+ cmd->unpacked_lun, h, GFP_ATOMIC);
+ if (rc) {
+ qpair->lun_cnt--;
+ ql_log(ql_log_info, vha, 0xd037,
+ "Unable to insert lun %llx into lun_qpair_map\n",
+ cmd->unpacked_lun);
+ }
+ goto out;
+ } else {
+ lcnt = qpair->lun_cnt;
+ }
+
+ h = NULL;
+ list_for_each_entry(qp, &base_vha->qp_list,
+ qp_list_elem) {
+ if (qp->lun_cnt == 0) {
+ qp->lun_cnt++;
+ h = qla_qpair_to_hint(tgt, qp);
+ BUG_ON(!h);
+ rc = btree_insert64(&tgt->lun_qpair_map,
+ cmd->unpacked_lun, h, GFP_ATOMIC);
+ if (rc) {
+ qp->lun_cnt--;
+ ql_log(ql_log_info, vha, 0xd038,
+ "Unable to insert lun %llx into lun_qpair_map\n",
+ cmd->unpacked_lun);
+ }
+ qpair = qp;
+ goto out;
+ } else {
+ if (qp->lun_cnt < lcnt) {
+ lcnt = qp->lun_cnt;
+ qpair = qp;
+ continue;
+ }
+ }
+ }
+ BUG_ON(!qpair);
+ qpair->lun_cnt++;
+ h = qla_qpair_to_hint(tgt, qpair);
+ BUG_ON(!h);
+ rc = btree_insert64(&tgt->lun_qpair_map,
+ cmd->unpacked_lun, h, GFP_ATOMIC);
+ if (rc) {
+ qpair->lun_cnt--;
+ ql_log(ql_log_info, vha, 0xd039,
+ "Unable to insert lun %llx into lun_qpair_map\n",
+ cmd->unpacked_lun);
+ }
+ }
+ } else {
+ h = &tgt->qphints[0];
+ }
+out:
+ cmd->qpair = h->qpair;
+ cmd->se_cmd.cpuid = h->cpuid;
+}
+
+static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
+ struct fc_port *sess,
+ struct atio_from_isp *atio)
+{
+ struct qla_tgt_cmd *cmd;
+
+ cmd = vha->hw->tgt.tgt_ops->get_cmd(sess);
+ if (!cmd)
+ return NULL;
+
+ cmd->cmd_type = TYPE_TGT_CMD;
+ memcpy(&cmd->atio, atio, sizeof(*atio));
+ INIT_LIST_HEAD(&cmd->sess_cmd_list);
+ cmd->state = QLA_TGT_STATE_NEW;
+ cmd->tgt = vha->vha_tgt.qla_tgt;
+ qlt_incr_num_pend_cmds(vha);
+ cmd->vha = vha;
+ cmd->sess = sess;
+ cmd->loop_id = sess->loop_id;
+ cmd->conf_compl_supported = sess->conf_compl_supported;
+
+ cmd->trc_flags = 0;
+ cmd->jiffies_at_alloc = get_jiffies_64();
+
+ cmd->unpacked_lun = scsilun_to_int(
+ (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
+ qlt_assign_qpair(vha, cmd);
+ cmd->reset_count = vha->hw->base_qpair->chip_reset;
+ cmd->vp_idx = vha->vp_idx;
+ cmd->edif = sess->edif.enable;
+
+ return cmd;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct fc_port *sess;
+ struct qla_tgt_cmd *cmd;
+ unsigned long flags;
+ port_id_t id;
+
+ if (unlikely(tgt->tgt_stop)) {
+ ql_dbg(ql_dbg_io, vha, 0x3061,
+ "New command while device %p is shutting down\n", tgt);
+ return -ENODEV;
+ }
+
+ id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
+ if (IS_SW_RESV_ADDR(id))
+ return -EBUSY;
+
+ sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
+ if (unlikely(!sess))
+ return -EFAULT;
+
+ /* Another WWN used to have our s_id. Our PLOGI scheduled its
+ * session deletion, but it's still in sess_del_work wq */
+ if (sess->deleted) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
+ "New command while old session %p is being deleted\n",
+ sess);
+ return -EFAULT;
+ }
+
+ /*
+ * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
+ */
+ if (!kref_get_unless_zero(&sess->sess_kref)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
+ "%s: kref_get fail, %8phC oxid %x \n",
+ __func__, sess->port_name,
+ be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
+ return -EFAULT;
+ }
+
+ cmd = qlt_get_tag(vha, sess, atio);
+ if (!cmd) {
+ ql_dbg(ql_dbg_io, vha, 0x3062,
+ "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
+ ha->tgt.tgt_ops->put_sess(sess);
+ return -EBUSY;
+ }
+
+ cmd->cmd_in_wq = 1;
+ cmd->trc_flags |= TRC_NEW_CMD;
+
+ spin_lock_irqsave(&vha->cmd_list_lock, flags);
+ list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
+ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
+
+ INIT_WORK(&cmd->work, qlt_do_work);
+ if (vha->flags.qpairs_available) {
+ queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
+ } else if (ha->msix_count) {
+ if (cmd->atio.u.isp24.fcp_cmnd.rddata)
+ queue_work(qla_tgt_wq, &cmd->work);
+ else
+ queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
+ &cmd->work);
+ } else {
+ queue_work(qla_tgt_wq, &cmd->work);
+ }
+
+ return 0;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
+ int fn, void *iocb, int flags)
+{
+ struct scsi_qla_host *vha = sess->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_mgmt_cmd *mcmd;
+ struct atio_from_isp *a = (struct atio_from_isp *)iocb;
+ struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
+
+ mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
+ if (!mcmd) {
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
+ "qla_target(%d): Allocation of management "
+ "command failed, some commands and their data could "
+ "leak\n", vha->vp_idx);
+ return -ENOMEM;
+ }
+ memset(mcmd, 0, sizeof(*mcmd));
+ mcmd->sess = sess;
+
+ if (iocb) {
+ memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
+ sizeof(mcmd->orig_iocb.imm_ntfy));
+ }
+ mcmd->tmr_func = fn;
+ mcmd->flags = flags;
+ mcmd->reset_count = ha->base_qpair->chip_reset;
+ mcmd->qpair = h->qpair;
+ mcmd->vha = vha;
+ mcmd->se_cmd.cpuid = h->cpuid;
+ mcmd->unpacked_lun = lun;
+
+ switch (fn) {
+ case QLA_TGT_LUN_RESET:
+ case QLA_TGT_CLEAR_TS:
+ case QLA_TGT_ABORT_TS:
+ abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
+ fallthrough;
+ case QLA_TGT_CLEAR_ACA:
+ h = qlt_find_qphint(vha, mcmd->unpacked_lun);
+ mcmd->qpair = h->qpair;
+ mcmd->se_cmd.cpuid = h->cpuid;
+ break;
+
+ case QLA_TGT_TARGET_RESET:
+ case QLA_TGT_NEXUS_LOSS_SESS:
+ case QLA_TGT_NEXUS_LOSS:
+ case QLA_TGT_ABORT_ALL:
+ default:
+ /* no-op */
+ break;
+ }
+
+ INIT_WORK(&mcmd->work, qlt_do_tmr_work);
+ queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq,
+ &mcmd->work);
+
+ return 0;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
+{
+ struct atio_from_isp *a = (struct atio_from_isp *)iocb;
+ struct qla_hw_data *ha = vha->hw;
+ struct fc_port *sess;
+ u64 unpacked_lun;
+ int fn;
+ unsigned long flags;
+
+ fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
+ a->u.isp24.fcp_hdr.s_id);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+ unpacked_lun =
+ scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
+
+ if (sess == NULL || sess->deleted)
+ return -EFAULT;
+
+ return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int __qlt_abort_task(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
+{
+ struct atio_from_isp *a = (struct atio_from_isp *)iocb;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_mgmt_cmd *mcmd;
+ u64 unpacked_lun;
+ int rc;
+
+ mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
+ if (mcmd == NULL) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
+ "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
+ vha->vp_idx, __func__);
+ return -ENOMEM;
+ }
+ memset(mcmd, 0, sizeof(*mcmd));
+
+ mcmd->sess = sess;
+ memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
+ sizeof(mcmd->orig_iocb.imm_ntfy));
+
+ unpacked_lun =
+ scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
+ mcmd->reset_count = ha->base_qpair->chip_reset;
+ mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
+ mcmd->qpair = ha->base_qpair;
+
+ rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
+ le16_to_cpu(iocb->u.isp2x.seq_id));
+ if (rc != 0) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
+ "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
+ vha->vp_idx, rc);
+ mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qlt_abort_task(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *iocb)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct fc_port *sess;
+ int loop_id;
+ unsigned long flags;
+
+ loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+ if (sess == NULL) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
+ "qla_target(%d): task abort for unexisting "
+ "session\n", vha->vp_idx);
+ return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
+ QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
+ }
+
+ return __qlt_abort_task(vha, iocb, sess);
+}
+
+void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
+{
+ if (rc != MBS_COMMAND_COMPLETE) {
+ ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
+ "%s: se_sess %p / sess %p from"
+ " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
+ " LOGO failed: %#x\n",
+ __func__,
+ fcport->se_sess,
+ fcport,
+ fcport->port_name, fcport->loop_id,
+ fcport->d_id.b.domain, fcport->d_id.b.area,
+ fcport->d_id.b.al_pa, rc);
+ }
+
+ fcport->logout_completed = 1;
+}
+
+/*
+* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
+*
+* Schedules sessions with matching port_id/loop_id but different wwn for
+* deletion. Returns existing session with matching wwn if present.
+* Null otherwise.
+*/
+struct fc_port *
+qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
+ port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
+{
+ struct fc_port *sess = NULL, *other_sess;
+ uint64_t other_wwn;
+
+ *conflict_sess = NULL;
+
+ list_for_each_entry(other_sess, &vha->vp_fcports, list) {
+
+ other_wwn = wwn_to_u64(other_sess->port_name);
+
+ if (wwn == other_wwn) {
+ WARN_ON(sess);
+ sess = other_sess;
+ continue;
+ }
+
+ /* find other sess with nport_id collision */
+ if (port_id.b24 == other_sess->d_id.b24) {
+ if (loop_id != other_sess->loop_id) {
+ ql_dbg(ql_dbg_disc, vha, 0x1000c,
+ "Invalidating sess %p loop_id %d wwn %llx.\n",
+ other_sess, other_sess->loop_id, other_wwn);
+
+ /*
+ * logout_on_delete is set by default, but another
+ * session that has the same s_id/loop_id combo
+ * might have cleared it when requested this session
+ * deletion, so don't touch it
+ */
+ qlt_schedule_sess_for_deletion(other_sess);
+ } else {
+ /*
+ * Another wwn used to have our s_id/loop_id
+ * kill the session, but don't free the loop_id
+ */
+ ql_dbg(ql_dbg_disc, vha, 0xf01b,
+ "Invalidating sess %p loop_id %d wwn %llx.\n",
+ other_sess, other_sess->loop_id, other_wwn);
+
+ other_sess->keep_nport_handle = 1;
+ if (other_sess->disc_state != DSC_DELETED)
+ *conflict_sess = other_sess;
+ qlt_schedule_sess_for_deletion(other_sess);
+ }
+ continue;
+ }
+
+ /* find other sess with nport handle collision */
+ if ((loop_id == other_sess->loop_id) &&
+ (loop_id != FC_NO_LOOP_ID)) {
+ ql_dbg(ql_dbg_disc, vha, 0x1000d,
+ "Invalidating sess %p loop_id %d wwn %llx.\n",
+ other_sess, other_sess->loop_id, other_wwn);
+
+ /* Same loop_id but different s_id
+ * Ok to kill and logout */
+ qlt_schedule_sess_for_deletion(other_sess);
+ }
+ }
+
+ return sess;
+}
+
+/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
+static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
+{
+ struct qla_tgt_sess_op *op;
+ struct qla_tgt_cmd *cmd;
+ uint32_t key;
+ int count = 0;
+ unsigned long flags;
+
+ key = (((u32)s_id->b.domain << 16) |
+ ((u32)s_id->b.area << 8) |
+ ((u32)s_id->b.al_pa));
+
+ spin_lock_irqsave(&vha->cmd_list_lock, flags);
+ list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
+ uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
+
+ if (op_key == key) {
+ op->aborted = true;
+ count++;
+ }
+ }
+
+ list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
+ uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
+
+ if (cmd_key == key) {
+ cmd->aborted = 1;
+ count++;
+ }
+ }
+ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
+
+ return count;
+}
+
+static int qlt_handle_login(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *iocb)
+{
+ struct fc_port *sess = NULL, *conflict_sess = NULL;
+ uint64_t wwn;
+ port_id_t port_id;
+ uint16_t loop_id, wd3_lo;
+ int res = 0;
+ struct qlt_plogi_ack_t *pla;
+ unsigned long flags;
+
+ lockdep_assert_held(&vha->hw->hardware_lock);
+
+ wwn = wwn_to_u64(iocb->u.isp24.port_name);
+
+ port_id.b.domain = iocb->u.isp24.port_id[2];
+ port_id.b.area = iocb->u.isp24.port_id[1];
+ port_id.b.al_pa = iocb->u.isp24.port_id[0];
+ port_id.b.rsvd_1 = 0;
+
+ loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
+
+ /* Mark all stale commands sitting in qla_tgt_wq for deletion */
+ abort_cmds_for_s_id(vha, &port_id);
+
+ if (wwn) {
+ spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
+ sess = qlt_find_sess_invalidate_other(vha, wwn,
+ port_id, loop_id, &conflict_sess);
+ spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+ } else {
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ",
+ __func__, __LINE__, loop_id, port_id.b24);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ goto out;
+ }
+
+ if (IS_SW_RESV_ADDR(port_id)) {
+ res = 1;
+ goto out;
+ }
+
+ if (vha->hw->flags.edif_enabled &&
+ !(vha->e_dbell.db_flags & EDB_ACTIVE) &&
+ iocb->u.isp24.status_subcode == ELS_PLOGI &&
+ !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) {
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d Term INOT due to app not available lid=%d, NportID %06X ",
+ __func__, __LINE__, loop_id, port_id.b24);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ goto out;
+ }
+
+ if (vha->hw->flags.edif_enabled) {
+ if (DBELL_INACTIVE(vha)) {
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d Term INOT due to app not started lid=%d, NportID %06X ",
+ __func__, __LINE__, loop_id, port_id.b24);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ goto out;
+ } else if (iocb->u.isp24.status_subcode == ELS_PLOGI &&
+ !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) {
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d Term INOT due to unsecure lid=%d, NportID %06X ",
+ __func__, __LINE__, loop_id, port_id.b24);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ goto out;
+ }
+ }
+
+ pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
+ if (!pla) {
+ ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff,
+ "%s %d %8phC Term INOT due to mem alloc fail",
+ __func__, __LINE__,
+ iocb->u.isp24.port_name);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ goto out;
+ }
+
+ if (conflict_sess) {
+ conflict_sess->login_gen++;
+ qlt_plogi_ack_link(vha, pla, conflict_sess,
+ QLT_PLOGI_LINK_CONFLICT);
+ }
+
+ if (!sess) {
+ pla->ref_count++;
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC post new sess\n",
+ __func__, __LINE__, iocb->u.isp24.port_name);
+ if (iocb->u.isp24.status_subcode == ELS_PLOGI)
+ qla24xx_post_newsess_work(vha, &port_id,
+ iocb->u.isp24.port_name,
+ iocb->u.isp24.u.plogi.node_name,
+ pla, 0);
+ else
+ qla24xx_post_newsess_work(vha, &port_id,
+ iocb->u.isp24.port_name, NULL,
+ pla, 0);
+
+ goto out;
+ }
+
+ if (sess->disc_state == DSC_UPD_FCPORT) {
+ u16 sec;
+
+ /*
+ * Remote port registration is still going on from
+ * previous login. Allow it to finish before we
+ * accept the new login.
+ */
+ sess->next_disc_state = DSC_DELETE_PEND;
+ sec = jiffies_to_msecs(jiffies -
+ sess->jiffies_at_registration) / 1000;
+ if (sess->sec_since_registration < sec && sec &&
+ !(sec % 5)) {
+ sess->sec_since_registration = sec;
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %8phC - Slow Rport registration (%d Sec)\n",
+ __func__, sess->port_name, sec);
+ }
+
+ if (!conflict_sess) {
+ list_del(&pla->list);
+ kmem_cache_free(qla_tgt_plogi_cachep, pla);
+ }
+
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ goto out;
+ }
+
+ qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
+ sess->d_id = port_id;
+ sess->login_gen++;
+ sess->loop_id = loop_id;
+
+ if (iocb->u.isp24.status_subcode == ELS_PLOGI) {
+ /* remote port has assigned Port ID */
+ if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess))
+ vha->d_id = sess->d_id;
+
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %8phC - send port online\n",
+ __func__, sess->port_name);
+
+ qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE,
+ sess->d_id.b24);
+ }
+
+ if (iocb->u.isp24.status_subcode == ELS_PRLI) {
+ sess->fw_login_state = DSC_LS_PRLI_PEND;
+ sess->local = 0;
+ sess->loop_id = loop_id;
+ sess->d_id = port_id;
+ sess->fw_login_state = DSC_LS_PRLI_PEND;
+ wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
+
+ if (wd3_lo & BIT_7)
+ sess->conf_compl_supported = 1;
+
+ if ((wd3_lo & BIT_4) == 0)
+ sess->port_type = FCT_INITIATOR;
+ else
+ sess->port_type = FCT_TARGET;
+
+ } else
+ sess->fw_login_state = DSC_LS_PLOGI_PEND;
+
+
+ ql_dbg(ql_dbg_disc, vha, 0x20f9,
+ "%s %d %8phC DS %d\n",
+ __func__, __LINE__, sess->port_name, sess->disc_state);
+
+ switch (sess->disc_state) {
+ case DSC_DELETED:
+ case DSC_LOGIN_PEND:
+ qlt_plogi_ack_unref(vha, pla);
+ break;
+
+ default:
+ /*
+ * Under normal circumstances we want to release nport handle
+ * during LOGO process to avoid nport handle leaks inside FW.
+ * The exception is when LOGO is done while another PLOGI with
+ * the same nport handle is waiting as might be the case here.
+ * Note: there is always a possibily of a race where session
+ * deletion has already started for other reasons (e.g. ACL
+ * removal) and now PLOGI arrives:
+ * 1. if PLOGI arrived in FW after nport handle has been freed,
+ * FW must have assigned this PLOGI a new/same handle and we
+ * can proceed ACK'ing it as usual when session deletion
+ * completes.
+ * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
+ * bit reached it, the handle has now been released. We'll
+ * get an error when we ACK this PLOGI. Nothing will be sent
+ * back to initiator. Initiator should eventually retry
+ * PLOGI and situation will correct itself.
+ */
+ sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
+ (sess->d_id.b24 == port_id.b24));
+
+ ql_dbg(ql_dbg_disc, vha, 0x20f9,
+ "%s %d %8phC post del sess\n",
+ __func__, __LINE__, sess->port_name);
+
+
+ qlt_schedule_sess_for_deletion(sess);
+ break;
+ }
+out:
+ return res;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *iocb)
+{
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct qla_hw_data *ha = vha->hw;
+ struct fc_port *sess = NULL, *conflict_sess = NULL;
+ uint64_t wwn;
+ port_id_t port_id;
+ uint16_t loop_id;
+ uint16_t wd3_lo;
+ int res = 0;
+ unsigned long flags;
+
+ lockdep_assert_held(&ha->hardware_lock);
+
+ wwn = wwn_to_u64(iocb->u.isp24.port_name);
+
+ port_id.b.domain = iocb->u.isp24.port_id[2];
+ port_id.b.area = iocb->u.isp24.port_id[1];
+ port_id.b.al_pa = iocb->u.isp24.port_id[0];
+ port_id.b.rsvd_1 = 0;
+
+ loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
+
+ ql_dbg(ql_dbg_disc, vha, 0xf026,
+ "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
+ vha->vp_idx, iocb->u.isp24.port_id[2],
+ iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
+ iocb->u.isp24.status_subcode, loop_id,
+ iocb->u.isp24.port_name);
+
+ /* res = 1 means ack at the end of thread
+ * res = 0 means ack async/later.
+ */
+ switch (iocb->u.isp24.status_subcode) {
+ case ELS_PLOGI:
+ res = qlt_handle_login(vha, iocb);
+ break;
+
+ case ELS_PRLI:
+ if (N2N_TOPO(ha)) {
+ sess = qla2x00_find_fcport_by_wwpn(vha,
+ iocb->u.isp24.port_name, 1);
+
+ if (vha->hw->flags.edif_enabled && sess &&
+ (!(sess->flags & FCF_FCSP_DEVICE) ||
+ !sess->edif.authok)) {
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC Term PRLI due to unauthorize PRLI\n",
+ __func__, __LINE__, iocb->u.isp24.port_name);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ break;
+ }
+
+ if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
+ __func__, __LINE__,
+ iocb->u.isp24.port_name);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ break;
+ }
+
+ res = qlt_handle_login(vha, iocb);
+ break;
+ }
+
+ if (IS_SW_RESV_ADDR(port_id)) {
+ res = 1;
+ break;
+ }
+
+ wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
+
+ if (wwn) {
+ spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
+ sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
+ loop_id, &conflict_sess);
+ spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
+ }
+
+ if (conflict_sess) {
+ switch (conflict_sess->disc_state) {
+ case DSC_DELETED:
+ case DSC_DELETE_PEND:
+ break;
+ default:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
+ "PRLI with conflicting sess %p port %8phC\n",
+ conflict_sess, conflict_sess->port_name);
+ conflict_sess->fw_login_state =
+ DSC_LS_PORT_UNAVAIL;
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ res = 0;
+ break;
+ }
+ }
+
+ if (sess != NULL) {
+ bool delete = false;
+ int sec;
+
+ if (vha->hw->flags.edif_enabled && sess &&
+ (!(sess->flags & FCF_FCSP_DEVICE) ||
+ !sess->edif.authok)) {
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC Term PRLI due to unauthorize prli\n",
+ __func__, __LINE__, iocb->u.isp24.port_name);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ break;
+ }
+
+ spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
+ switch (sess->fw_login_state) {
+ case DSC_LS_PLOGI_PEND:
+ case DSC_LS_PLOGI_COMP:
+ case DSC_LS_PRLI_COMP:
+ break;
+ default:
+ delete = true;
+ break;
+ }
+
+ switch (sess->disc_state) {
+ case DSC_UPD_FCPORT:
+ spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
+ flags);
+
+ sec = jiffies_to_msecs(jiffies -
+ sess->jiffies_at_registration)/1000;
+ if (sess->sec_since_registration < sec && sec &&
+ !(sec % 5)) {
+ sess->sec_since_registration = sec;
+ ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
+ "%s %8phC : Slow Rport registration(%d Sec)\n",
+ __func__, sess->port_name, sec);
+ }
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ return 0;
+
+ case DSC_LOGIN_PEND:
+ case DSC_GPDB:
+ case DSC_LOGIN_COMPLETE:
+ case DSC_ADISC:
+ delete = false;
+ break;
+ default:
+ break;
+ }
+
+ if (delete) {
+ spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
+ flags);
+ /*
+ * Impatient initiator sent PRLI before last
+ * PLOGI could finish. Will force him to re-try,
+ * while last one finishes.
+ */
+ ql_log(ql_log_warn, sess->vha, 0xf095,
+ "sess %p PRLI received, before plogi ack.\n",
+ sess);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ res = 0;
+ break;
+ }
+
+ /*
+ * This shouldn't happen under normal circumstances,
+ * since we have deleted the old session during PLOGI
+ */
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
+ "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
+ sess->loop_id, sess, iocb->u.isp24.nport_handle);
+
+ sess->local = 0;
+ sess->loop_id = loop_id;
+ sess->d_id = port_id;
+ sess->fw_login_state = DSC_LS_PRLI_PEND;
+
+ if (wd3_lo & BIT_7)
+ sess->conf_compl_supported = 1;
+
+ if ((wd3_lo & BIT_4) == 0)
+ sess->port_type = FCT_INITIATOR;
+ else
+ sess->port_type = FCT_TARGET;
+
+ spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
+ }
+ res = 1; /* send notify ack */
+
+ /* Make session global (not used in fabric mode) */
+ if (ha->current_topology != ISP_CFG_F) {
+ if (sess) {
+ ql_dbg(ql_dbg_disc, vha, 0x20fa,
+ "%s %d %8phC post nack\n",
+ __func__, __LINE__, sess->port_name);
+ qla24xx_post_nack_work(vha, sess, iocb,
+ SRB_NACK_PRLI);
+ res = 0;
+ } else {
+ set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
+ set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ }
+ } else {
+ if (sess) {
+ ql_dbg(ql_dbg_disc, vha, 0x20fb,
+ "%s %d %8phC post nack\n",
+ __func__, __LINE__, sess->port_name);
+ qla24xx_post_nack_work(vha, sess, iocb,
+ SRB_NACK_PRLI);
+ res = 0;
+ }
+ }
+ break;
+
+ case ELS_TPRLO:
+ if (le16_to_cpu(iocb->u.isp24.flags) &
+ NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
+ loop_id = 0xFFFF;
+ qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
+ res = 1;
+ break;
+ }
+ fallthrough;
+ case ELS_LOGO:
+ case ELS_PRLO:
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+ if (sess) {
+ sess->login_gen++;
+ sess->fw_login_state = DSC_LS_LOGO_PEND;
+ sess->logo_ack_needed = 1;
+ memcpy(sess->iocb, iocb, IOCB_SIZE);
+ }
+
+ res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
+
+ ql_dbg(ql_dbg_disc, vha, 0x20fc,
+ "%s: logo %llx res %d sess %p ",
+ __func__, wwn, res, sess);
+ if (res == 0) {
+ /*
+ * cmd went upper layer, look for qlt_xmit_tm_rsp()
+ * for LOGO_ACK & sess delete
+ */
+ BUG_ON(!sess);
+ res = 0;
+ } else {
+ /* cmd did not go to upper layer. */
+ if (sess) {
+ qlt_schedule_sess_for_deletion(sess);
+ res = 0;
+ }
+ /* else logo will be ack */
+ }
+ break;
+ case ELS_PDISC:
+ case ELS_ADISC:
+ {
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+
+ if (tgt->link_reinit_iocb_pending) {
+ qlt_send_notify_ack(ha->base_qpair,
+ &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
+ tgt->link_reinit_iocb_pending = 0;
+ }
+
+ sess = qla2x00_find_fcport_by_wwpn(vha,
+ iocb->u.isp24.port_name, 1);
+ if (sess) {
+ ql_dbg(ql_dbg_disc, vha, 0x20fd,
+ "sess %p lid %d|%d DS %d LS %d\n",
+ sess, sess->loop_id, loop_id,
+ sess->disc_state, sess->fw_login_state);
+ }
+
+ res = 1; /* send notify ack */
+ break;
+ }
+
+ case ELS_FLOGI: /* should never happen */
+ default:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
+ "qla_target(%d): Unsupported ELS command %x "
+ "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
+ res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
+ break;
+ }
+
+ ql_dbg(ql_dbg_disc, vha, 0xf026,
+ "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
+ vha->vp_idx, iocb->u.isp24.status_subcode, res);
+
+ return res;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry.
+ * Might drop it, then reacquire.
+ */
+static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *iocb)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint32_t add_flags = 0;
+ int send_notify_ack = 1;
+ uint16_t status;
+
+ lockdep_assert_held(&ha->hardware_lock);
+
+ status = le16_to_cpu(iocb->u.isp2x.status);
+ switch (status) {
+ case IMM_NTFY_LIP_RESET:
+ {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
+ "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
+ vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
+ iocb->u.isp24.status_subcode);
+
+ if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
+ send_notify_ack = 0;
+ break;
+ }
+
+ case IMM_NTFY_LIP_LINK_REINIT:
+ {
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
+ "qla_target(%d): LINK REINIT (loop %#x, "
+ "subcode %x)\n", vha->vp_idx,
+ le16_to_cpu(iocb->u.isp24.nport_handle),
+ iocb->u.isp24.status_subcode);
+ if (tgt->link_reinit_iocb_pending) {
+ qlt_send_notify_ack(ha->base_qpair,
+ &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
+ }
+ memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
+ tgt->link_reinit_iocb_pending = 1;
+ /*
+ * QLogic requires to wait after LINK REINIT for possible
+ * PDISC or ADISC ELS commands
+ */
+ send_notify_ack = 0;
+ break;
+ }
+
+ case IMM_NTFY_PORT_LOGOUT:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
+ "qla_target(%d): Port logout (loop "
+ "%#x, subcode %x)\n", vha->vp_idx,
+ le16_to_cpu(iocb->u.isp24.nport_handle),
+ iocb->u.isp24.status_subcode);
+
+ if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
+ send_notify_ack = 0;
+ /* The sessions will be cleared in the callback, if needed */
+ break;
+
+ case IMM_NTFY_GLBL_TPRLO:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
+ "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
+ if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
+ send_notify_ack = 0;
+ /* The sessions will be cleared in the callback, if needed */
+ break;
+
+ case IMM_NTFY_PORT_CONFIG:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
+ "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
+ status);
+ if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
+ send_notify_ack = 0;
+ /* The sessions will be cleared in the callback, if needed */
+ break;
+
+ case IMM_NTFY_GLBL_LOGO:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
+ "qla_target(%d): Link failure detected\n",
+ vha->vp_idx);
+ /* I_T nexus loss */
+ if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
+ send_notify_ack = 0;
+ break;
+
+ case IMM_NTFY_IOCB_OVERFLOW:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
+ "qla_target(%d): Cannot provide requested "
+ "capability (IOCB overflowed the immediate notify "
+ "resource count)\n", vha->vp_idx);
+ break;
+
+ case IMM_NTFY_ABORT_TASK:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
+ "qla_target(%d): Abort Task (S %08x I %#x -> "
+ "L %#x)\n", vha->vp_idx,
+ le16_to_cpu(iocb->u.isp2x.seq_id),
+ GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
+ le16_to_cpu(iocb->u.isp2x.lun));
+ if (qlt_abort_task(vha, iocb) == 0)
+ send_notify_ack = 0;
+ break;
+
+ case IMM_NTFY_RESOURCE:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
+ "qla_target(%d): Out of resources, host %ld\n",
+ vha->vp_idx, vha->host_no);
+ break;
+
+ case IMM_NTFY_MSG_RX:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
+ "qla_target(%d): Immediate notify task %x\n",
+ vha->vp_idx, iocb->u.isp2x.task_flags);
+ break;
+
+ case IMM_NTFY_ELS:
+ if (qlt_24xx_handle_els(vha, iocb) == 0)
+ send_notify_ack = 0;
+ break;
+ default:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
+ "qla_target(%d): Received unknown immediate "
+ "notify status %x\n", vha->vp_idx, status);
+ break;
+ }
+
+ if (send_notify_ack)
+ qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
+ 0, 0);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ * This function sends busy to ISP 2xxx or 24xx.
+ */
+static int __qlt_send_busy(struct qla_qpair *qpair,
+ struct atio_from_isp *atio, uint16_t status)
+{
+ struct scsi_qla_host *vha = qpair->vha;
+ struct ctio7_to_24xx *ctio24;
+ struct qla_hw_data *ha = vha->hw;
+ request_t *pkt;
+ struct fc_port *sess = NULL;
+ unsigned long flags;
+ u16 temp;
+ port_id_t id;
+
+ id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+ sess = qla2x00_find_fcport_by_nportid(vha, &id, 1);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+ if (!sess) {
+ qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
+ return 0;
+ }
+ /* Sending marker isn't necessary, since we called from ISR */
+
+ pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
+ if (!pkt) {
+ ql_dbg(ql_dbg_io, vha, 0x3063,
+ "qla_target(%d): %s failed: unable to allocate "
+ "request packet", vha->vp_idx, __func__);
+ return -ENOMEM;
+ }
+
+ qpair->tgt_counters.num_q_full_sent++;
+ pkt->entry_count = 1;
+ pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+
+ ctio24 = (struct ctio7_to_24xx *)pkt;
+ ctio24->entry_type = CTIO_TYPE7;
+ ctio24->nport_handle = cpu_to_le16(sess->loop_id);
+ ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio24->vp_index = vha->vp_idx;
+ ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
+ ctio24->exchange_addr = atio->u.isp24.exchange_addr;
+ temp = (atio->u.isp24.attr << 9) |
+ CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
+ CTIO7_FLAGS_DONT_RET_CTIO;
+ ctio24->u.status1.flags = cpu_to_le16(temp);
+ /*
+ * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
+ * if the explicit conformation is used.
+ */
+ ctio24->u.status1.ox_id =
+ cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
+ ctio24->u.status1.scsi_status = cpu_to_le16(status);
+
+ ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
+
+ if (ctio24->u.status1.residual != 0)
+ ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER);
+
+ /* Memory Barrier */
+ wmb();
+ if (qpair->reqq_start_iocbs)
+ qpair->reqq_start_iocbs(qpair);
+ else
+ qla2x00_start_iocbs(vha, qpair->req);
+ return 0;
+}
+
+/*
+ * This routine is used to allocate a command for either a QFull condition
+ * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
+ * out previously.
+ */
+static void
+qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio, uint16_t status, int qfull)
+{
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct qla_hw_data *ha = vha->hw;
+ struct fc_port *sess;
+ struct qla_tgt_cmd *cmd;
+ unsigned long flags;
+
+ if (unlikely(tgt->tgt_stop)) {
+ ql_dbg(ql_dbg_io, vha, 0x300a,
+ "New command while device %p is shutting down\n", tgt);
+ return;
+ }
+
+ if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
+ vha->hw->tgt.num_qfull_cmds_dropped++;
+ if (vha->hw->tgt.num_qfull_cmds_dropped >
+ vha->qla_stats.stat_max_qfull_cmds_dropped)
+ vha->qla_stats.stat_max_qfull_cmds_dropped =
+ vha->hw->tgt.num_qfull_cmds_dropped;
+
+ ql_dbg(ql_dbg_io, vha, 0x3068,
+ "qla_target(%d): %s: QFull CMD dropped[%d]\n",
+ vha->vp_idx, __func__,
+ vha->hw->tgt.num_qfull_cmds_dropped);
+
+ qlt_chk_exch_leak_thresh_hold(vha);
+ return;
+ }
+
+ sess = ha->tgt.tgt_ops->find_sess_by_s_id
+ (vha, atio->u.isp24.fcp_hdr.s_id);
+ if (!sess)
+ return;
+
+ cmd = ha->tgt.tgt_ops->get_cmd(sess);
+ if (!cmd) {
+ ql_dbg(ql_dbg_io, vha, 0x3009,
+ "qla_target(%d): %s: Allocation of cmd failed\n",
+ vha->vp_idx, __func__);
+
+ vha->hw->tgt.num_qfull_cmds_dropped++;
+ if (vha->hw->tgt.num_qfull_cmds_dropped >
+ vha->qla_stats.stat_max_qfull_cmds_dropped)
+ vha->qla_stats.stat_max_qfull_cmds_dropped =
+ vha->hw->tgt.num_qfull_cmds_dropped;
+
+ qlt_chk_exch_leak_thresh_hold(vha);
+ return;
+ }
+
+ qlt_incr_num_pend_cmds(vha);
+ INIT_LIST_HEAD(&cmd->cmd_list);
+ memcpy(&cmd->atio, atio, sizeof(*atio));
+
+ cmd->tgt = vha->vha_tgt.qla_tgt;
+ cmd->vha = vha;
+ cmd->reset_count = ha->base_qpair->chip_reset;
+ cmd->q_full = 1;
+ cmd->qpair = ha->base_qpair;
+
+ if (qfull) {
+ cmd->q_full = 1;
+ /* NOTE: borrowing the state field to carry the status */
+ cmd->state = status;
+ } else
+ cmd->term_exchg = 1;
+
+ spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
+ list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
+
+ vha->hw->tgt.num_qfull_cmds_alloc++;
+ if (vha->hw->tgt.num_qfull_cmds_alloc >
+ vha->qla_stats.stat_max_qfull_cmds_alloc)
+ vha->qla_stats.stat_max_qfull_cmds_alloc =
+ vha->hw->tgt.num_qfull_cmds_alloc;
+ spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+}
+
+int
+qlt_free_qfull_cmds(struct qla_qpair *qpair)
+{
+ struct scsi_qla_host *vha = qpair->vha;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+ struct qla_tgt_cmd *cmd, *tcmd;
+ struct list_head free_list, q_full_list;
+ int rc = 0;
+
+ if (list_empty(&ha->tgt.q_full_list))
+ return 0;
+
+ INIT_LIST_HEAD(&free_list);
+ INIT_LIST_HEAD(&q_full_list);
+
+ spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
+ if (list_empty(&ha->tgt.q_full_list)) {
+ spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+ return 0;
+ }
+
+ list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
+ spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+
+ spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+ list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
+ if (cmd->q_full)
+ /* cmd->state is a borrowed field to hold status */
+ rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
+ else if (cmd->term_exchg)
+ rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
+
+ if (rc == -ENOMEM)
+ break;
+
+ if (cmd->q_full)
+ ql_dbg(ql_dbg_io, vha, 0x3006,
+ "%s: busy sent for ox_id[%04x]\n", __func__,
+ be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
+ else if (cmd->term_exchg)
+ ql_dbg(ql_dbg_io, vha, 0x3007,
+ "%s: Term exchg sent for ox_id[%04x]\n", __func__,
+ be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
+ else
+ ql_dbg(ql_dbg_io, vha, 0x3008,
+ "%s: Unexpected cmd in QFull list %p\n", __func__,
+ cmd);
+
+ list_move_tail(&cmd->cmd_list, &free_list);
+
+ /* piggy back on hardware_lock for protection */
+ vha->hw->tgt.num_qfull_cmds_alloc--;
+ }
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+
+ cmd = NULL;
+
+ list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
+ list_del(&cmd->cmd_list);
+ /* This cmd was never sent to TCM. There is no need
+ * to schedule free or call free_cmd
+ */
+ qlt_free_cmd(cmd);
+ }
+
+ if (!list_empty(&q_full_list)) {
+ spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
+ list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
+ spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+ }
+
+ return rc;
+}
+
+static void
+qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
+ uint16_t status)
+{
+ int rc = 0;
+ struct scsi_qla_host *vha = qpair->vha;
+
+ rc = __qlt_send_busy(qpair, atio, status);
+ if (rc == -ENOMEM)
+ qlt_alloc_qfull_cmd(vha, atio, status, 1);
+}
+
+static int
+qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
+ struct atio_from_isp *atio, uint8_t ha_locked)
+{
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+
+ if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
+ return 0;
+
+ if (!ha_locked)
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qlt_send_busy(qpair, atio, qla_sam_status);
+ if (!ha_locked)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return 1;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio, uint8_t ha_locked)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ int rc;
+ unsigned long flags = 0;
+
+ if (unlikely(tgt == NULL)) {
+ ql_dbg(ql_dbg_tgt, vha, 0x3064,
+ "ATIO pkt, but no tgt (ha %p)", ha);
+ return;
+ }
+ /*
+ * In tgt_stop mode we also should allow all requests to pass.
+ * Otherwise, some commands can stuck.
+ */
+
+ tgt->atio_irq_cmd_count++;
+
+ switch (atio->u.raw.entry_type) {
+ case ATIO_TYPE7:
+ if (unlikely(atio->u.isp24.exchange_addr ==
+ cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) {
+ ql_dbg(ql_dbg_io, vha, 0x3065,
+ "qla_target(%d): ATIO_TYPE7 "
+ "received with UNKNOWN exchange address, "
+ "sending QUEUE_FULL\n", vha->vp_idx);
+ if (!ha_locked)
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
+ if (!ha_locked)
+ spin_unlock_irqrestore(&ha->hardware_lock,
+ flags);
+ break;
+ }
+
+ if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
+ rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
+ atio, ha_locked);
+ if (rc != 0) {
+ tgt->atio_irq_cmd_count--;
+ return;
+ }
+ rc = qlt_handle_cmd_for_atio(vha, atio);
+ } else {
+ rc = qlt_handle_task_mgmt(vha, atio);
+ }
+ if (unlikely(rc != 0)) {
+ if (!ha_locked)
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ switch (rc) {
+ case -ENODEV:
+ ql_dbg(ql_dbg_tgt, vha, 0xe05f,
+ "qla_target: Unable to send command to target\n");
+ break;
+ case -EBADF:
+ ql_dbg(ql_dbg_tgt, vha, 0xe05f,
+ "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
+ qlt_send_term_exchange(ha->base_qpair, NULL,
+ atio, 1, 0);
+ break;
+ case -EBUSY:
+ ql_dbg(ql_dbg_tgt, vha, 0xe060,
+ "qla_target(%d): Unable to send command to target, sending BUSY status\n",
+ vha->vp_idx);
+ qlt_send_busy(ha->base_qpair, atio,
+ tc_sam_status);
+ break;
+ default:
+ ql_dbg(ql_dbg_tgt, vha, 0xe060,
+ "qla_target(%d): Unable to send command to target, sending BUSY status\n",
+ vha->vp_idx);
+ qlt_send_busy(ha->base_qpair, atio,
+ qla_sam_status);
+ break;
+ }
+ if (!ha_locked)
+ spin_unlock_irqrestore(&ha->hardware_lock,
+ flags);
+ }
+ break;
+
+ case IMMED_NOTIFY_TYPE:
+ {
+ if (unlikely(atio->u.isp2x.entry_status != 0)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe05b,
+ "qla_target(%d): Received ATIO packet %x "
+ "with error status %x\n", vha->vp_idx,
+ atio->u.raw.entry_type,
+ atio->u.isp2x.entry_status);
+ break;
+ }
+ ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
+
+ if (!ha_locked)
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
+ if (!ha_locked)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ break;
+ }
+
+ default:
+ ql_dbg(ql_dbg_tgt, vha, 0xe05c,
+ "qla_target(%d): Received unknown ATIO atio "
+ "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
+ break;
+ }
+
+ tgt->atio_irq_cmd_count--;
+}
+
+/*
+ * qpair lock is assume to be held
+ * rc = 0 : send terminate & abts respond
+ * rc != 0: do not send term & abts respond
+ */
+static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha,
+ struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry)
+{
+ struct qla_hw_data *ha = vha->hw;
+ int rc = 0;
+
+ /*
+ * Detect unresolved exchange. If the same ABTS is unable
+ * to terminate an existing command and the same ABTS loops
+ * between FW & Driver, then force FW dump. Under 1 jiff,
+ * we should see multiple loops.
+ */
+ if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort &&
+ qpair->retry_term_jiff == jiffies) {
+ /* found existing exchange */
+ qpair->retry_term_cnt++;
+ if (qpair->retry_term_cnt >= 5) {
+ rc = -EIO;
+ qpair->retry_term_cnt = 0;
+ ql_log(ql_log_warn, vha, 0xffff,
+ "Unable to send ABTS Respond. Dumping firmware.\n");
+ ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer,
+ vha, 0xffff, (uint8_t *)entry, sizeof(*entry));
+
+ if (qpair == ha->base_qpair)
+ ha->isp_ops->fw_dump(vha);
+ else
+ qla2xxx_dump_fw(vha);
+
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ }
+ } else if (qpair->retry_term_jiff != jiffies) {
+ qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort;
+ qpair->retry_term_cnt = 0;
+ qpair->retry_term_jiff = jiffies;
+ }
+
+ return rc;
+}
+
+
+static void qlt_handle_abts_completion(struct scsi_qla_host *vha,
+ struct rsp_que *rsp, response_t *pkt)
+{
+ struct abts_resp_from_24xx_fw *entry =
+ (struct abts_resp_from_24xx_fw *)pkt;
+ u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK;
+ struct qla_tgt_mgmt_cmd *mcmd;
+ struct qla_hw_data *ha = vha->hw;
+
+ mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt);
+ if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) {
+ ql_dbg(ql_dbg_async, vha, 0xe064,
+ "qla_target(%d): ABTS Comp without mcmd\n",
+ vha->vp_idx);
+ return;
+ }
+
+ if (mcmd)
+ vha = mcmd->vha;
+ vha->vha_tgt.qla_tgt->abts_resp_expected--;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe038,
+ "ABTS_RESP_24XX: compl_status %x\n",
+ entry->compl_status);
+
+ if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) {
+ if (le32_to_cpu(entry->error_subcode1) == 0x1E &&
+ le32_to_cpu(entry->error_subcode2) == 0) {
+ if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) {
+ ha->tgt.tgt_ops->free_mcmd(mcmd);
+ return;
+ }
+ qlt_24xx_retry_term_exchange(vha, rsp->qpair,
+ pkt, mcmd);
+ } else {
+ ql_dbg(ql_dbg_tgt, vha, 0xe063,
+ "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)",
+ vha->vp_idx, entry->compl_status,
+ entry->error_subcode1,
+ entry->error_subcode2);
+ ha->tgt.tgt_ops->free_mcmd(mcmd);
+ }
+ } else if (mcmd) {
+ ha->tgt.tgt_ops->free_mcmd(mcmd);
+ }
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+static void qlt_response_pkt(struct scsi_qla_host *vha,
+ struct rsp_que *rsp, response_t *pkt)
+{
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+
+ if (unlikely(tgt == NULL)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe05d,
+ "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
+ vha->vp_idx, pkt->entry_type, vha->hw);
+ return;
+ }
+
+ /*
+ * In tgt_stop mode we also should allow all requests to pass.
+ * Otherwise, some commands can stuck.
+ */
+
+ switch (pkt->entry_type) {
+ case CTIO_CRC2:
+ case CTIO_TYPE7:
+ {
+ struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
+
+ qlt_do_ctio_completion(vha, rsp, entry->handle,
+ le16_to_cpu(entry->status)|(pkt->entry_status << 16),
+ entry);
+ break;
+ }
+
+ case ACCEPT_TGT_IO_TYPE:
+ {
+ struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
+ int rc;
+
+ if (atio->u.isp2x.status !=
+ cpu_to_le16(ATIO_CDB_VALID)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe05e,
+ "qla_target(%d): ATIO with error "
+ "status %x received\n", vha->vp_idx,
+ le16_to_cpu(atio->u.isp2x.status));
+ break;
+ }
+
+ rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
+ if (rc != 0)
+ return;
+
+ rc = qlt_handle_cmd_for_atio(vha, atio);
+ if (unlikely(rc != 0)) {
+ switch (rc) {
+ case -ENODEV:
+ ql_dbg(ql_dbg_tgt, vha, 0xe05f,
+ "qla_target: Unable to send command to target\n");
+ break;
+ case -EBADF:
+ ql_dbg(ql_dbg_tgt, vha, 0xe05f,
+ "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
+ qlt_send_term_exchange(rsp->qpair, NULL,
+ atio, 1, 0);
+ break;
+ case -EBUSY:
+ ql_dbg(ql_dbg_tgt, vha, 0xe060,
+ "qla_target(%d): Unable to send command to target, sending BUSY status\n",
+ vha->vp_idx);
+ qlt_send_busy(rsp->qpair, atio,
+ tc_sam_status);
+ break;
+ default:
+ ql_dbg(ql_dbg_tgt, vha, 0xe060,
+ "qla_target(%d): Unable to send command to target, sending BUSY status\n",
+ vha->vp_idx);
+ qlt_send_busy(rsp->qpair, atio,
+ qla_sam_status);
+ break;
+ }
+ }
+ }
+ break;
+
+ case CONTINUE_TGT_IO_TYPE:
+ {
+ struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
+
+ qlt_do_ctio_completion(vha, rsp, entry->handle,
+ le16_to_cpu(entry->status)|(pkt->entry_status << 16),
+ entry);
+ break;
+ }
+
+ case CTIO_A64_TYPE:
+ {
+ struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
+
+ qlt_do_ctio_completion(vha, rsp, entry->handle,
+ le16_to_cpu(entry->status)|(pkt->entry_status << 16),
+ entry);
+ break;
+ }
+
+ case IMMED_NOTIFY_TYPE:
+ ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
+ qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
+ break;
+
+ case NOTIFY_ACK_TYPE:
+ if (tgt->notify_ack_expected > 0) {
+ struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe036,
+ "NOTIFY_ACK seq %08x status %x\n",
+ le16_to_cpu(entry->u.isp2x.seq_id),
+ le16_to_cpu(entry->u.isp2x.status));
+ tgt->notify_ack_expected--;
+ if (entry->u.isp2x.status !=
+ cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe061,
+ "qla_target(%d): NOTIFY_ACK "
+ "failed %x\n", vha->vp_idx,
+ le16_to_cpu(entry->u.isp2x.status));
+ }
+ } else {
+ ql_dbg(ql_dbg_tgt, vha, 0xe062,
+ "qla_target(%d): Unexpected NOTIFY_ACK received\n",
+ vha->vp_idx);
+ }
+ break;
+
+ case ABTS_RECV_24XX:
+ ql_dbg(ql_dbg_tgt, vha, 0xe037,
+ "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
+ qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
+ break;
+
+ case ABTS_RESP_24XX:
+ if (tgt->abts_resp_expected > 0) {
+ qlt_handle_abts_completion(vha, rsp, pkt);
+ } else {
+ ql_dbg(ql_dbg_tgt, vha, 0xe064,
+ "qla_target(%d): Unexpected ABTS_RESP_24XX "
+ "received\n", vha->vp_idx);
+ }
+ break;
+
+ default:
+ ql_dbg(ql_dbg_tgt, vha, 0xe065,
+ "qla_target(%d): Received unknown response pkt "
+ "type %x\n", vha->vp_idx, pkt->entry_type);
+ break;
+ }
+
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
+ uint16_t *mailbox)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ int login_code;
+
+ if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
+ return;
+
+ if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
+ IS_QLA2100(ha))
+ return;
+ /*
+ * In tgt_stop mode we also should allow all requests to pass.
+ * Otherwise, some commands can stuck.
+ */
+
+
+ switch (code) {
+ case MBA_RESET: /* Reset */
+ case MBA_SYSTEM_ERR: /* System Error */
+ case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
+ case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
+ "qla_target(%d): System error async event %#x "
+ "occurred", vha->vp_idx, code);
+ break;
+ case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ break;
+
+ case MBA_LOOP_UP:
+ {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
+ "qla_target(%d): Async LOOP_UP occurred "
+ "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
+ mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
+ if (tgt->link_reinit_iocb_pending) {
+ qlt_send_notify_ack(ha->base_qpair,
+ &tgt->link_reinit_iocb,
+ 0, 0, 0, 0, 0, 0);
+ tgt->link_reinit_iocb_pending = 0;
+ }
+ break;
+ }
+
+ case MBA_LIP_OCCURRED:
+ case MBA_LOOP_DOWN:
+ case MBA_LIP_RESET:
+ case MBA_RSCN_UPDATE:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
+ "qla_target(%d): Async event %#x occurred "
+ "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
+ mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
+ break;
+
+ case MBA_REJECTED_FCP_CMD:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
+ "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
+ vha->vp_idx,
+ mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
+
+ if (mailbox[3] == 1) {
+ /* exchange starvation. */
+ vha->hw->exch_starvation++;
+ if (vha->hw->exch_starvation > 5) {
+ ql_log(ql_log_warn, vha, 0xd03a,
+ "Exchange starvation-. Resetting RISC\n");
+
+ vha->hw->exch_starvation = 0;
+ if (IS_P3P_TYPE(vha->hw))
+ set_bit(FCOE_CTX_RESET_NEEDED,
+ &vha->dpc_flags);
+ else
+ set_bit(ISP_ABORT_NEEDED,
+ &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ }
+ }
+ break;
+
+ case MBA_PORT_UPDATE:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
+ "qla_target(%d): Port update async event %#x "
+ "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
+ "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
+ mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
+
+ login_code = mailbox[2];
+ if (login_code == 0x4) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
+ "Async MB 2: Got PLOGI Complete\n");
+ vha->hw->exch_starvation = 0;
+ } else if (login_code == 0x7)
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
+ "Async MB 2: Port Logged Out\n");
+ break;
+ default:
+ break;
+ }
+
+}
+
+static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
+ uint16_t loop_id)
+{
+ fc_port_t *fcport, *tfcp, *del;
+ int rc;
+ unsigned long flags;
+ u8 newfcport = 0;
+
+ fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
+ if (!fcport) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
+ "qla_target(%d): Allocation of tmp FC port failed",
+ vha->vp_idx);
+ return NULL;
+ }
+
+ fcport->loop_id = loop_id;
+
+ rc = qla24xx_gpdb_wait(vha, fcport, 0);
+ if (rc != QLA_SUCCESS) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
+ "qla_target(%d): Failed to retrieve fcport "
+ "information -- get_port_database() returned %x "
+ "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
+ kfree(fcport);
+ return NULL;
+ }
+
+ del = NULL;
+ spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
+ tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
+
+ if (tfcp) {
+ tfcp->d_id = fcport->d_id;
+ tfcp->port_type = fcport->port_type;
+ tfcp->supported_classes = fcport->supported_classes;
+ tfcp->flags |= fcport->flags;
+ tfcp->scan_state = QLA_FCPORT_FOUND;
+
+ del = fcport;
+ fcport = tfcp;
+ } else {
+ if (vha->hw->current_topology == ISP_CFG_F)
+ fcport->flags |= FCF_FABRIC_DEVICE;
+
+ list_add_tail(&fcport->list, &vha->vp_fcports);
+ if (!IS_SW_RESV_ADDR(fcport->d_id))
+ vha->fcport_count++;
+ fcport->login_gen++;
+ qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE);
+ fcport->login_succ = 1;
+ newfcport = 1;
+ }
+
+ fcport->deleted = 0;
+ spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+
+ switch (vha->host->active_mode) {
+ case MODE_INITIATOR:
+ case MODE_DUAL:
+ if (newfcport) {
+ if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
+ qla24xx_sched_upd_fcport(fcport);
+ } else {
+ ql_dbg(ql_dbg_disc, vha, 0x20ff,
+ "%s %d %8phC post gpsc fcp_cnt %d\n",
+ __func__, __LINE__, fcport->port_name, vha->fcport_count);
+ qla24xx_post_gpsc_work(vha, fcport);
+ }
+ }
+ break;
+
+ case MODE_TARGET:
+ default:
+ break;
+ }
+ if (del)
+ qla2x00_free_fcport(del);
+
+ return fcport;
+}
+
+/* Must be called under tgt_mutex */
+static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
+ be_id_t s_id)
+{
+ struct fc_port *sess = NULL;
+ fc_port_t *fcport = NULL;
+ int rc, global_resets;
+ uint16_t loop_id = 0;
+
+ if (s_id.domain == 0xFF && s_id.area == 0xFC) {
+ /*
+ * This is Domain Controller, so it should be
+ * OK to drop SCSI commands from it.
+ */
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
+ "Unable to find initiator with S_ID %x:%x:%x",
+ s_id.domain, s_id.area, s_id.al_pa);
+ return NULL;
+ }
+
+ mutex_lock(&vha->vha_tgt.tgt_mutex);
+
+retry:
+ global_resets =
+ atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
+
+ rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
+ if (rc != 0) {
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+
+ ql_log(ql_log_info, vha, 0xf071,
+ "qla_target(%d): Unable to find "
+ "initiator with S_ID %x:%x:%x",
+ vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa);
+
+ if (rc == -ENOENT) {
+ qlt_port_logo_t logo;
+
+ logo.id = be_to_port_id(s_id);
+ logo.cmd_count = 1;
+ qlt_send_first_logo(vha, &logo);
+ }
+
+ return NULL;
+ }
+
+ fcport = qlt_get_port_database(vha, loop_id);
+ if (!fcport) {
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+ return NULL;
+ }
+
+ if (global_resets !=
+ atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
+ "qla_target(%d): global reset during session discovery "
+ "(counter was %d, new %d), retrying", vha->vp_idx,
+ global_resets,
+ atomic_read(&vha->vha_tgt.
+ qla_tgt->tgt_global_resets_count));
+ goto retry;
+ }
+
+ sess = qlt_create_sess(vha, fcport, true);
+
+ mutex_unlock(&vha->vha_tgt.tgt_mutex);
+
+ return sess;
+}
+
+static void qlt_abort_work(struct qla_tgt *tgt,
+ struct qla_tgt_sess_work_param *prm)
+{
+ struct scsi_qla_host *vha = tgt->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct fc_port *sess = NULL;
+ unsigned long flags = 0, flags2 = 0;
+ be_id_t s_id;
+ int rc;
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
+
+ if (tgt->tgt_stop)
+ goto out_term2;
+
+ s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id);
+
+ sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
+ if (!sess) {
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
+
+ sess = qlt_make_local_sess(vha, s_id);
+ /* sess has got an extra creation ref */
+
+ spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
+ if (!sess)
+ goto out_term2;
+ } else {
+ if (sess->deleted) {
+ sess = NULL;
+ goto out_term2;
+ }
+
+ if (!kref_get_unless_zero(&sess->sess_kref)) {
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
+ "%s: kref_get fail %8phC \n",
+ __func__, sess->port_name);
+ sess = NULL;
+ goto out_term2;
+ }
+ }
+
+ rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
+
+ ha->tgt.tgt_ops->put_sess(sess);
+
+ if (rc != 0)
+ goto out_term;
+ return;
+
+out_term2:
+ spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
+
+out_term:
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
+ FCP_TMF_REJECTED, false);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+static void qlt_sess_work_fn(struct work_struct *work)
+{
+ struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
+ struct scsi_qla_host *vha = tgt->vha;
+ unsigned long flags;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
+
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+ while (!list_empty(&tgt->sess_works_list)) {
+ struct qla_tgt_sess_work_param *prm = list_entry(
+ tgt->sess_works_list.next, typeof(*prm),
+ sess_works_list_entry);
+
+ /*
+ * This work can be scheduled on several CPUs at time, so we
+ * must delete the entry to eliminate double processing
+ */
+ list_del(&prm->sess_works_list_entry);
+
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+ switch (prm->type) {
+ case QLA_TGT_SESS_WORK_ABORT:
+ qlt_abort_work(tgt, prm);
+ break;
+ default:
+ BUG_ON(1);
+ break;
+ }
+
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+
+ kfree(prm);
+ }
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+}
+
+/* Must be called under tgt_host_action_mutex */
+int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
+{
+ struct qla_tgt *tgt;
+ int rc, i;
+ struct qla_qpair_hint *h;
+
+ if (!QLA_TGT_MODE_ENABLED())
+ return 0;
+
+ if (!IS_TGT_MODE_CAPABLE(ha)) {
+ ql_log(ql_log_warn, base_vha, 0xe070,
+ "This adapter does not support target mode.\n");
+ return 0;
+ }
+
+ ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
+ "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
+
+ BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
+
+ tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
+ if (!tgt) {
+ ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
+ "Unable to allocate struct qla_tgt\n");
+ return -ENOMEM;
+ }
+
+ tgt->qphints = kcalloc(ha->max_qpairs + 1,
+ sizeof(struct qla_qpair_hint),
+ GFP_KERNEL);
+ if (!tgt->qphints) {
+ kfree(tgt);
+ ql_log(ql_log_warn, base_vha, 0x0197,
+ "Unable to allocate qpair hints.\n");
+ return -ENOMEM;
+ }
+
+ if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
+ base_vha->host->hostt->supported_mode |= MODE_TARGET;
+
+ rc = btree_init64(&tgt->lun_qpair_map);
+ if (rc) {
+ kfree(tgt->qphints);
+ kfree(tgt);
+ ql_log(ql_log_info, base_vha, 0x0198,
+ "Unable to initialize lun_qpair_map btree\n");
+ return -EIO;
+ }
+ h = &tgt->qphints[0];
+ h->qpair = ha->base_qpair;
+ INIT_LIST_HEAD(&h->hint_elem);
+ h->cpuid = ha->base_qpair->cpuid;
+ list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
+
+ for (i = 0; i < ha->max_qpairs; i++) {
+ unsigned long flags;
+
+ struct qla_qpair *qpair = ha->queue_pair_map[i];
+
+ h = &tgt->qphints[i + 1];
+ INIT_LIST_HEAD(&h->hint_elem);
+ if (qpair) {
+ h->qpair = qpair;
+ spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+ list_add_tail(&h->hint_elem, &qpair->hints_list);
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+ h->cpuid = qpair->cpuid;
+ }
+ }
+
+ tgt->ha = ha;
+ tgt->vha = base_vha;
+ init_waitqueue_head(&tgt->waitQ);
+ spin_lock_init(&tgt->sess_work_lock);
+ INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
+ INIT_LIST_HEAD(&tgt->sess_works_list);
+ atomic_set(&tgt->tgt_global_resets_count, 0);
+
+ base_vha->vha_tgt.qla_tgt = tgt;
+
+ ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
+ "qla_target(%d): using 64 Bit PCI addressing",
+ base_vha->vp_idx);
+ /* 3 is reserved */
+ tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
+
+ mutex_lock(&qla_tgt_mutex);
+ list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
+ mutex_unlock(&qla_tgt_mutex);
+
+ if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
+ ha->tgt.tgt_ops->add_target(base_vha);
+
+ return 0;
+}
+
+/* Must be called under tgt_host_action_mutex */
+int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
+{
+ if (!vha->vha_tgt.qla_tgt)
+ return 0;
+
+ if (vha->fc_vport) {
+ qlt_release(vha->vha_tgt.qla_tgt);
+ return 0;
+ }
+
+ /* free left over qfull cmds */
+ qlt_init_term_exchange(vha);
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
+ vha->host_no, ha);
+ qlt_release(vha->vha_tgt.qla_tgt);
+
+ return 0;
+}
+
+void qla_remove_hostmap(struct qla_hw_data *ha)
+{
+ struct scsi_qla_host *node;
+ u32 key = 0;
+
+ btree_for_each_safe32(&ha->host_map, key, node)
+ btree_remove32(&ha->host_map, key);
+
+ btree_destroy32(&ha->host_map);
+}
+
+static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
+ unsigned char *b)
+{
+ pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name);
+ pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name);
+ put_unaligned_be64(wwpn, b);
+ pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b);
+}
+
+/**
+ * qlt_lport_register - register lport with external module
+ *
+ * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
+ * @phys_wwpn: physical port WWPN
+ * @npiv_wwpn: NPIV WWPN
+ * @npiv_wwnn: NPIV WWNN
+ * @callback: lport initialization callback for tcm_qla2xxx code
+ */
+int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
+ u64 npiv_wwpn, u64 npiv_wwnn,
+ int (*callback)(struct scsi_qla_host *, void *, u64, u64))
+{
+ struct qla_tgt *tgt;
+ struct scsi_qla_host *vha;
+ struct qla_hw_data *ha;
+ struct Scsi_Host *host;
+ unsigned long flags;
+ int rc;
+ u8 b[WWN_SIZE];
+
+ mutex_lock(&qla_tgt_mutex);
+ list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
+ vha = tgt->vha;
+ ha = vha->hw;
+
+ host = vha->host;
+ if (!host)
+ continue;
+
+ if (!(host->hostt->supported_mode & MODE_TARGET))
+ continue;
+
+ if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
+ continue;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
+ pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
+ host->host_no);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ continue;
+ }
+ if (tgt->tgt_stop) {
+ pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
+ host->host_no);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ continue;
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if (!scsi_host_get(host)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe068,
+ "Unable to scsi_host_get() for"
+ " qla2xxx scsi_host\n");
+ continue;
+ }
+ qlt_lport_dump(vha, phys_wwpn, b);
+
+ if (memcmp(vha->port_name, b, WWN_SIZE)) {
+ scsi_host_put(host);
+ continue;
+ }
+ rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
+ if (rc != 0)
+ scsi_host_put(host);
+
+ mutex_unlock(&qla_tgt_mutex);
+ return rc;
+ }
+ mutex_unlock(&qla_tgt_mutex);
+
+ return -ENODEV;
+}
+EXPORT_SYMBOL(qlt_lport_register);
+
+/**
+ * qlt_lport_deregister - Degister lport
+ *
+ * @vha: Registered scsi_qla_host pointer
+ */
+void qlt_lport_deregister(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct Scsi_Host *sh = vha->host;
+ /*
+ * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
+ */
+ vha->vha_tgt.target_lport_ptr = NULL;
+ ha->tgt.tgt_ops = NULL;
+ /*
+ * Release the Scsi_Host reference for the underlying qla2xxx host
+ */
+ scsi_host_put(sh);
+}
+EXPORT_SYMBOL(qlt_lport_deregister);
+
+/* Must be called under HW lock */
+void qlt_set_mode(struct scsi_qla_host *vha)
+{
+ switch (vha->qlini_mode) {
+ case QLA2XXX_INI_MODE_DISABLED:
+ case QLA2XXX_INI_MODE_EXCLUSIVE:
+ vha->host->active_mode = MODE_TARGET;
+ break;
+ case QLA2XXX_INI_MODE_ENABLED:
+ vha->host->active_mode = MODE_INITIATOR;
+ break;
+ case QLA2XXX_INI_MODE_DUAL:
+ vha->host->active_mode = MODE_DUAL;
+ break;
+ default:
+ break;
+ }
+}
+
+/* Must be called under HW lock */
+static void qlt_clear_mode(struct scsi_qla_host *vha)
+{
+ switch (vha->qlini_mode) {
+ case QLA2XXX_INI_MODE_DISABLED:
+ vha->host->active_mode = MODE_UNKNOWN;
+ break;
+ case QLA2XXX_INI_MODE_EXCLUSIVE:
+ vha->host->active_mode = MODE_INITIATOR;
+ break;
+ case QLA2XXX_INI_MODE_ENABLED:
+ case QLA2XXX_INI_MODE_DUAL:
+ vha->host->active_mode = MODE_INITIATOR;
+ break;
+ default:
+ break;
+ }
+}
+
+/*
+ * qla_tgt_enable_vha - NO LOCK HELD
+ *
+ * host_reset, bring up w/ Target Mode Enabled
+ */
+void
+qlt_enable_vha(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ unsigned long flags;
+ scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
+
+ if (!tgt) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe069,
+ "Unable to locate qla_tgt pointer from"
+ " struct qla_hw_data\n");
+ dump_stack();
+ return;
+ }
+ if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
+ return;
+
+ if (ha->tgt.num_act_qpairs > ha->max_qpairs)
+ ha->tgt.num_act_qpairs = ha->max_qpairs;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ tgt->tgt_stopped = 0;
+ qlt_set_mode(vha);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ mutex_lock(&ha->optrom_mutex);
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
+ "%s.\n", __func__);
+ if (vha->vp_idx) {
+ qla24xx_disable_vp(vha);
+ qla24xx_enable_vp(vha);
+ } else {
+ set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
+ qla2xxx_wake_dpc(base_vha);
+ WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) !=
+ QLA_SUCCESS);
+ }
+ mutex_unlock(&ha->optrom_mutex);
+}
+EXPORT_SYMBOL(qlt_enable_vha);
+
+/*
+ * qla_tgt_disable_vha - NO LOCK HELD
+ *
+ * Disable Target Mode and reset the adapter
+ */
+static void qlt_disable_vha(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ unsigned long flags;
+
+ if (!tgt) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe06a,
+ "Unable to locate qla_tgt pointer from"
+ " struct qla_hw_data\n");
+ dump_stack();
+ return;
+ }
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qlt_clear_mode(vha);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+
+ /*
+ * We are expecting the offline state.
+ * QLA_FUNCTION_FAILED means that adapter is offline.
+ */
+ if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
+ ql_dbg(ql_dbg_tgt, vha, 0xe081,
+ "adapter is offline\n");
+}
+
+/*
+ * Called from qla_init.c:qla24xx_vport_create() contex to setup
+ * the target mode specific struct scsi_qla_host and struct qla_hw_data
+ * members.
+ */
+void
+qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
+{
+ vha->vha_tgt.qla_tgt = NULL;
+
+ mutex_init(&vha->vha_tgt.tgt_mutex);
+ mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
+
+ qlt_clear_mode(vha);
+
+ /*
+ * NOTE: Currently the value is kept the same for <24xx and
+ * >=24xx ISPs. If it is necessary to change it,
+ * the check should be added for specific ISPs,
+ * assigning the value appropriately.
+ */
+ ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
+
+ qlt_add_target(ha, vha);
+}
+
+u8
+qlt_rff_id(struct scsi_qla_host *vha)
+{
+ u8 fc4_feature = 0;
+ /*
+ * FC-4 Feature bit 0 indicates target functionality to the name server.
+ */
+ if (qla_tgt_mode_enabled(vha)) {
+ fc4_feature = BIT_0;
+ } else if (qla_ini_mode_enabled(vha)) {
+ fc4_feature = BIT_1;
+ } else if (qla_dual_mode_enabled(vha))
+ fc4_feature = BIT_0 | BIT_1;
+
+ return fc4_feature;
+}
+
+/*
+ * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
+ * @ha: HA context
+ *
+ * Beginning of ATIO ring has initialization control block already built
+ * by nvram config routine.
+ *
+ * Returns 0 on success.
+ */
+void
+qlt_init_atio_q_entries(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint16_t cnt;
+ struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
+
+ if (qla_ini_mode_enabled(vha))
+ return;
+
+ for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
+ pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
+ pkt++;
+ }
+
+}
+
+/*
+ * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
+ * @ha: SCSI driver HA context
+ */
+void
+qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct atio_from_isp *pkt;
+ int cnt, i;
+
+ if (!ha->flags.fw_started)
+ return;
+
+ while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
+ fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
+ pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
+ cnt = pkt->u.raw.entry_count;
+
+ if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
+ /*
+ * This packet is corrupted. The header + payload
+ * can not be trusted. There is no point in passing
+ * it further up.
+ */
+ ql_log(ql_log_warn, vha, 0xd03c,
+ "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
+ &pkt->u.isp24.fcp_hdr.s_id,
+ be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
+ pkt->u.isp24.exchange_addr, pkt);
+
+ adjust_corrupted_atio(pkt);
+ qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
+ ha_locked, 0);
+ } else {
+ qlt_24xx_atio_pkt_all_vps(vha,
+ (struct atio_from_isp *)pkt, ha_locked);
+ }
+
+ for (i = 0; i < cnt; i++) {
+ ha->tgt.atio_ring_index++;
+ if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
+ ha->tgt.atio_ring_index = 0;
+ ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
+ } else
+ ha->tgt.atio_ring_ptr++;
+
+ pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
+ pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
+ }
+ wmb();
+ }
+
+ /* Adjust ring index */
+ wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
+}
+
+void
+qlt_24xx_config_rings(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_msix_entry *msix = &ha->msix_entries[2];
+ struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
+
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+
+ wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0);
+ wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0);
+ rd_reg_dword(ISP_ATIO_Q_OUT(vha));
+
+ if (ha->flags.msix_enabled) {
+ if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
+ icb->msix_atio = cpu_to_le16(msix->entry);
+ icb->firmware_options_2 &= cpu_to_le32(~BIT_26);
+ ql_dbg(ql_dbg_init, vha, 0xf072,
+ "Registering ICB vector 0x%x for atio que.\n",
+ msix->entry);
+ }
+ } else {
+ /* INTx|MSI */
+ if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
+ icb->msix_atio = 0;
+ icb->firmware_options_2 |= cpu_to_le32(BIT_26);
+ ql_dbg(ql_dbg_init, vha, 0xf072,
+ "%s: Use INTx for ATIOQ.\n", __func__);
+ }
+ }
+}
+
+void
+qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
+{
+ struct qla_hw_data *ha = vha->hw;
+ u32 tmp;
+
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+
+ if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
+ if (!ha->tgt.saved_set) {
+ /* We save only once */
+ ha->tgt.saved_exchange_count = nv->exchange_count;
+ ha->tgt.saved_firmware_options_1 =
+ nv->firmware_options_1;
+ ha->tgt.saved_firmware_options_2 =
+ nv->firmware_options_2;
+ ha->tgt.saved_firmware_options_3 =
+ nv->firmware_options_3;
+ ha->tgt.saved_set = 1;
+ }
+
+ if (qla_tgt_mode_enabled(vha))
+ nv->exchange_count = cpu_to_le16(0xFFFF);
+ else /* dual */
+ nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
+
+ /* Enable target mode */
+ nv->firmware_options_1 |= cpu_to_le32(BIT_4);
+
+ /* Disable ini mode, if requested */
+ if (qla_tgt_mode_enabled(vha))
+ nv->firmware_options_1 |= cpu_to_le32(BIT_5);
+
+ /* Disable Full Login after LIP */
+ nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
+ /* Enable initial LIP */
+ nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
+ if (ql2xtgt_tape_enable)
+ /* Enable FC Tape support */
+ nv->firmware_options_2 |= cpu_to_le32(BIT_12);
+ else
+ /* Disable FC Tape support */
+ nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
+
+ /* Disable Full Login after LIP */
+ nv->host_p &= cpu_to_le32(~BIT_10);
+
+ /*
+ * clear BIT 15 explicitly as we have seen at least
+ * a couple of instances where this was set and this
+ * was causing the firmware to not be initialized.
+ */
+ nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
+ /* Enable target PRLI control */
+ nv->firmware_options_2 |= cpu_to_le32(BIT_14);
+
+ if (IS_QLA25XX(ha)) {
+ /* Change Loop-prefer to Pt-Pt */
+ tmp = ~(BIT_4|BIT_5|BIT_6);
+ nv->firmware_options_2 &= cpu_to_le32(tmp);
+ tmp = P2P << 4;
+ nv->firmware_options_2 |= cpu_to_le32(tmp);
+ }
+ } else {
+ if (ha->tgt.saved_set) {
+ nv->exchange_count = ha->tgt.saved_exchange_count;
+ nv->firmware_options_1 =
+ ha->tgt.saved_firmware_options_1;
+ nv->firmware_options_2 =
+ ha->tgt.saved_firmware_options_2;
+ nv->firmware_options_3 =
+ ha->tgt.saved_firmware_options_3;
+ }
+ return;
+ }
+
+ if (ha->base_qpair->enable_class_2) {
+ if (vha->flags.init_done)
+ fc_host_supported_classes(vha->host) =
+ FC_COS_CLASS2 | FC_COS_CLASS3;
+
+ nv->firmware_options_2 |= cpu_to_le32(BIT_8);
+ } else {
+ if (vha->flags.init_done)
+ fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
+
+ nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
+ }
+}
+
+void
+qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
+ struct init_cb_24xx *icb)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+
+ if (ha->tgt.node_name_set) {
+ memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
+ icb->firmware_options_1 |= cpu_to_le32(BIT_14);
+ }
+}
+
+void
+qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
+{
+ struct qla_hw_data *ha = vha->hw;
+ u32 tmp;
+
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+
+ if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
+ if (!ha->tgt.saved_set) {
+ /* We save only once */
+ ha->tgt.saved_exchange_count = nv->exchange_count;
+ ha->tgt.saved_firmware_options_1 =
+ nv->firmware_options_1;
+ ha->tgt.saved_firmware_options_2 =
+ nv->firmware_options_2;
+ ha->tgt.saved_firmware_options_3 =
+ nv->firmware_options_3;
+ ha->tgt.saved_set = 1;
+ }
+
+ if (qla_tgt_mode_enabled(vha))
+ nv->exchange_count = cpu_to_le16(0xFFFF);
+ else /* dual */
+ nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
+
+ /* Enable target mode */
+ nv->firmware_options_1 |= cpu_to_le32(BIT_4);
+
+ /* Disable ini mode, if requested */
+ if (qla_tgt_mode_enabled(vha))
+ nv->firmware_options_1 |= cpu_to_le32(BIT_5);
+ /* Disable Full Login after LIP */
+ nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
+ /* Enable initial LIP */
+ nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
+ /*
+ * clear BIT 15 explicitly as we have seen at
+ * least a couple of instances where this was set
+ * and this was causing the firmware to not be
+ * initialized.
+ */
+ nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
+ if (ql2xtgt_tape_enable)
+ /* Enable FC tape support */
+ nv->firmware_options_2 |= cpu_to_le32(BIT_12);
+ else
+ /* Disable FC tape support */
+ nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
+
+ /* Disable Full Login after LIP */
+ nv->host_p &= cpu_to_le32(~BIT_10);
+ /* Enable target PRLI control */
+ nv->firmware_options_2 |= cpu_to_le32(BIT_14);
+
+ /* Change Loop-prefer to Pt-Pt */
+ tmp = ~(BIT_4|BIT_5|BIT_6);
+ nv->firmware_options_2 &= cpu_to_le32(tmp);
+ tmp = P2P << 4;
+ nv->firmware_options_2 |= cpu_to_le32(tmp);
+ } else {
+ if (ha->tgt.saved_set) {
+ nv->exchange_count = ha->tgt.saved_exchange_count;
+ nv->firmware_options_1 =
+ ha->tgt.saved_firmware_options_1;
+ nv->firmware_options_2 =
+ ha->tgt.saved_firmware_options_2;
+ nv->firmware_options_3 =
+ ha->tgt.saved_firmware_options_3;
+ }
+ return;
+ }
+
+ if (ha->base_qpair->enable_class_2) {
+ if (vha->flags.init_done)
+ fc_host_supported_classes(vha->host) =
+ FC_COS_CLASS2 | FC_COS_CLASS3;
+
+ nv->firmware_options_2 |= cpu_to_le32(BIT_8);
+ } else {
+ if (vha->flags.init_done)
+ fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
+
+ nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
+ }
+}
+
+void
+qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
+ struct init_cb_81xx *icb)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+
+ if (ha->tgt.node_name_set) {
+ memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
+ icb->firmware_options_1 |= cpu_to_le32(BIT_14);
+ }
+}
+
+void
+qlt_83xx_iospace_config(struct qla_hw_data *ha)
+{
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+
+ ha->msix_count += 1; /* For ATIO Q */
+}
+
+
+void
+qlt_modify_vp_config(struct scsi_qla_host *vha,
+ struct vp_config_entry_24xx *vpmod)
+{
+ /* enable target mode. Bit5 = 1 => disable */
+ if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
+ vpmod->options_idx1 &= ~BIT_5;
+
+ /* Disable ini mode, if requested. bit4 = 1 => disable */
+ if (qla_tgt_mode_enabled(vha))
+ vpmod->options_idx1 &= ~BIT_4;
+}
+
+void
+qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
+{
+ mutex_init(&base_vha->vha_tgt.tgt_mutex);
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+
+ if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
+ ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
+ ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
+ } else {
+ ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
+ ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
+ }
+
+ mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
+
+ INIT_LIST_HEAD(&base_vha->unknown_atio_list);
+ INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
+ qlt_unknown_atio_work_fn);
+
+ qlt_clear_mode(base_vha);
+
+ qlt_update_vp_map(base_vha, SET_VP_IDX);
+}
+
+irqreturn_t
+qla83xx_msix_atio_q(int irq, void *dev_id)
+{
+ struct rsp_que *rsp;
+ scsi_qla_host_t *vha;
+ struct qla_hw_data *ha;
+ unsigned long flags;
+
+ rsp = (struct rsp_que *) dev_id;
+ ha = rsp->hw;
+ vha = pci_get_drvdata(ha->pdev);
+
+ spin_lock_irqsave(&ha->tgt.atio_lock, flags);
+
+ qlt_24xx_process_atio_queue(vha, 0);
+
+ spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
+
+ return IRQ_HANDLED;
+}
+
+static void
+qlt_handle_abts_recv_work(struct work_struct *work)
+{
+ struct qla_tgt_sess_op *op = container_of(work,
+ struct qla_tgt_sess_op, work);
+ scsi_qla_host_t *vha = op->vha;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+
+ if (qla2x00_reset_active(vha) ||
+ (op->chip_reset != ha->base_qpair->chip_reset))
+ return;
+
+ spin_lock_irqsave(&ha->tgt.atio_lock, flags);
+ qlt_24xx_process_atio_queue(vha, 0);
+ spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ kfree(op);
+}
+
+void
+qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
+ response_t *pkt)
+{
+ struct qla_tgt_sess_op *op;
+
+ op = kzalloc(sizeof(*op), GFP_ATOMIC);
+
+ if (!op) {
+ /* do not reach for ATIO queue here. This is best effort err
+ * recovery at this point.
+ */
+ qlt_response_pkt_all_vps(vha, rsp, pkt);
+ return;
+ }
+
+ memcpy(&op->atio, pkt, sizeof(*pkt));
+ op->vha = vha;
+ op->chip_reset = vha->hw->base_qpair->chip_reset;
+ op->rsp = rsp;
+ INIT_WORK(&op->work, qlt_handle_abts_recv_work);
+ queue_work(qla_tgt_wq, &op->work);
+ return;
+}
+
+int
+qlt_mem_alloc(struct qla_hw_data *ha)
+{
+ if (!QLA_TGT_MODE_ENABLED())
+ return 0;
+
+ ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC,
+ sizeof(struct qla_tgt_vp_map),
+ GFP_KERNEL);
+ if (!ha->tgt.tgt_vp_map)
+ return -ENOMEM;
+
+ ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
+ (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
+ &ha->tgt.atio_dma, GFP_KERNEL);
+ if (!ha->tgt.atio_ring) {
+ kfree(ha->tgt.tgt_vp_map);
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+void
+qlt_mem_free(struct qla_hw_data *ha)
+{
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+
+ if (ha->tgt.atio_ring) {
+ dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
+ sizeof(struct atio_from_isp), ha->tgt.atio_ring,
+ ha->tgt.atio_dma);
+ }
+ ha->tgt.atio_ring = NULL;
+ ha->tgt.atio_dma = 0;
+ kfree(ha->tgt.tgt_vp_map);
+ ha->tgt.tgt_vp_map = NULL;
+}
+
+/* vport_slock to be held by the caller */
+void
+qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
+{
+ void *slot;
+ u32 key;
+ int rc;
+
+ key = vha->d_id.b24;
+
+ switch (cmd) {
+ case SET_VP_IDX:
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+ vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
+ break;
+ case SET_AL_PA:
+ slot = btree_lookup32(&vha->hw->host_map, key);
+ if (!slot) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
+ "Save vha in host_map %p %06x\n", vha, key);
+ rc = btree_insert32(&vha->hw->host_map,
+ key, vha, GFP_ATOMIC);
+ if (rc)
+ ql_log(ql_log_info, vha, 0xd03e,
+ "Unable to insert s_id into host_map: %06x\n",
+ key);
+ return;
+ }
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
+ "replace existing vha in host_map %p %06x\n", vha, key);
+ btree_update32(&vha->hw->host_map, key, vha);
+ break;
+ case RESET_VP_IDX:
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+ vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
+ break;
+ case RESET_AL_PA:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
+ "clear vha in host_map %p %06x\n", vha, key);
+ slot = btree_lookup32(&vha->hw->host_map, key);
+ if (slot)
+ btree_remove32(&vha->hw->host_map, key);
+ vha->d_id.b24 = 0;
+ break;
+ }
+}
+
+void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
+{
+
+ if (!vha->d_id.b24) {
+ vha->d_id = id;
+ qlt_update_vp_map(vha, SET_AL_PA);
+ } else if (vha->d_id.b24 != id.b24) {
+ qlt_update_vp_map(vha, RESET_AL_PA);
+ vha->d_id = id;
+ qlt_update_vp_map(vha, SET_AL_PA);
+ }
+}
+
+static int __init qlt_parse_ini_mode(void)
+{
+ if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
+ ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
+ else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
+ ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
+ else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
+ ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
+ else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
+ ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
+ else
+ return false;
+
+ return true;
+}
+
+int __init qlt_init(void)
+{
+ int ret;
+
+ BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
+ BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
+
+ if (!qlt_parse_ini_mode()) {
+ ql_log(ql_log_fatal, NULL, 0xe06b,
+ "qlt_parse_ini_mode() failed\n");
+ return -EINVAL;
+ }
+
+ if (!QLA_TGT_MODE_ENABLED())
+ return 0;
+
+ qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
+ sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
+ qla_tgt_mgmt_cmd), 0, NULL);
+ if (!qla_tgt_mgmt_cmd_cachep) {
+ ql_log(ql_log_fatal, NULL, 0xd04b,
+ "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
+ return -ENOMEM;
+ }
+
+ qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
+ sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
+ 0, NULL);
+
+ if (!qla_tgt_plogi_cachep) {
+ ql_log(ql_log_fatal, NULL, 0xe06d,
+ "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
+ ret = -ENOMEM;
+ goto out_mgmt_cmd_cachep;
+ }
+
+ qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
+ mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
+ if (!qla_tgt_mgmt_cmd_mempool) {
+ ql_log(ql_log_fatal, NULL, 0xe06e,
+ "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
+ ret = -ENOMEM;
+ goto out_plogi_cachep;
+ }
+
+ qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
+ if (!qla_tgt_wq) {
+ ql_log(ql_log_fatal, NULL, 0xe06f,
+ "alloc_workqueue for qla_tgt_wq failed\n");
+ ret = -ENOMEM;
+ goto out_cmd_mempool;
+ }
+ /*
+ * Return 1 to signal that initiator-mode is being disabled
+ */
+ return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
+
+out_cmd_mempool:
+ mempool_destroy(qla_tgt_mgmt_cmd_mempool);
+out_plogi_cachep:
+ kmem_cache_destroy(qla_tgt_plogi_cachep);
+out_mgmt_cmd_cachep:
+ kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
+ return ret;
+}
+
+void qlt_exit(void)
+{
+ if (!QLA_TGT_MODE_ENABLED())
+ return;
+
+ destroy_workqueue(qla_tgt_wq);
+ mempool_destroy(qla_tgt_mgmt_cmd_mempool);
+ kmem_cache_destroy(qla_tgt_plogi_cachep);
+ kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
+}