2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
4 * based on qla2x00t.c code:
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
11 * Forward port and refactoring to modern qla2xxx and target/configfs
13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/types.h>
29 #include <linux/blkdev.h>
30 #include <linux/interrupt.h>
31 #include <linux/pci.h>
32 #include <linux/delay.h>
33 #include <linux/list.h>
34 #include <linux/workqueue.h>
35 #include <asm/unaligned.h>
36 #include <scsi/scsi.h>
37 #include <scsi/scsi_host.h>
38 #include <scsi/scsi_tcq.h>
39 #include <target/target_core_base.h>
40 #include <target/target_core_fabric.h>
43 #include "qla_target.h"
45 static int ql2xtgt_tape_enable;
46 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47 MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
50 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51 module_param(qlini_mode, charp, S_IRUGO);
52 MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
57 "\"disabled\" - initiator mode will never be enabled; "
58 "\"enabled\" (default) - initiator mode will always stay enabled.");
60 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
62 static int temp_sam_status = SAM_STAT_BUSY;
65 * From scsi/fc/fc_fcp.h
67 enum fcp_resp_rsp_codes {
69 FCP_DATA_LEN_INVALID = 1,
70 FCP_CMND_FIELDS_INVALID = 2,
71 FCP_DATA_PARAM_MISMATCH = 3,
74 FCP_TMF_INVALID_LUN = 9,
78 * fc_pri_ta from scsi/fc/fc_fcp.h
80 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
81 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
82 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
83 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
84 #define FCP_PTA_MASK 7 /* mask for task attribute field */
85 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
86 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
89 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
90 * must be called under HW lock and could unlock/lock it inside.
91 * It isn't an issue, since in the current implementation on the time when
92 * those functions are called:
94 * - Either context is IRQ and only IRQ handler can modify HW data,
95 * including rings related fields,
97 * - Or access to target mode variables from struct qla_tgt doesn't
98 * cross those functions boundaries, except tgt_stop, which
99 * additionally protected by irq_cmd_count.
101 /* Predefs for callbacks handed to qla2xxx LLD */
102 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
103 struct atio_from_isp *pkt);
104 static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
105 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
106 int fn, void *iocb, int flags);
107 static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
108 *cmd, struct atio_from_isp *atio, int ha_locked);
109 static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
110 struct qla_tgt_srr_imm *imm, int ha_lock);
111 static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
112 struct qla_tgt_cmd *cmd);
113 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
114 struct atio_from_isp *atio, uint16_t status, int qfull);
115 static void qlt_disable_vha(struct scsi_qla_host *vha);
119 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
120 static mempool_t *qla_tgt_mgmt_cmd_mempool;
121 static struct workqueue_struct *qla_tgt_wq;
122 static DEFINE_MUTEX(qla_tgt_mutex);
123 static LIST_HEAD(qla_tgt_glist);
125 /* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
126 static struct qla_tgt_sess *qlt_find_sess_by_port_name(
128 const uint8_t *port_name)
130 struct qla_tgt_sess *sess;
132 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
133 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
140 /* Might release hw lock, then reaquire!! */
141 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
143 /* Send marker if required */
144 if (unlikely(vha->marker_needed != 0)) {
145 int rc = qla2x00_issue_marker(vha, vha_locked);
146 if (rc != QLA_SUCCESS) {
147 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
148 "qla_target(%d): issue_marker() failed\n",
157 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
160 struct qla_hw_data *ha = vha->hw;
163 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
166 if (vha->d_id.b.al_pa == d_id[2])
169 BUG_ON(ha->tgt.tgt_vp_map == NULL);
170 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
171 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
172 return ha->tgt.tgt_vp_map[vp_idx].vha;
178 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
181 struct qla_hw_data *ha = vha->hw;
183 if (vha->vp_idx == vp_idx)
186 BUG_ON(ha->tgt.tgt_vp_map == NULL);
187 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
188 return ha->tgt.tgt_vp_map[vp_idx].vha;
193 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
197 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
199 vha->hw->tgt.num_pend_cmds++;
200 if (vha->hw->tgt.num_pend_cmds > vha->hw->qla_stats.stat_max_pend_cmds)
201 vha->hw->qla_stats.stat_max_pend_cmds =
202 vha->hw->tgt.num_pend_cmds;
203 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
205 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
209 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
210 vha->hw->tgt.num_pend_cmds--;
211 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
214 static void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
215 struct atio_from_isp *atio)
217 ql_dbg(ql_dbg_tgt, vha, 0xe072,
218 "%s: qla_target(%d): type %x ox_id %04x\n",
219 __func__, vha->vp_idx, atio->u.raw.entry_type,
220 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
222 switch (atio->u.raw.entry_type) {
225 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
226 atio->u.isp24.fcp_hdr.d_id);
227 if (unlikely(NULL == host)) {
228 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
229 "qla_target(%d): Received ATIO_TYPE7 "
230 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
231 atio->u.isp24.fcp_hdr.d_id[0],
232 atio->u.isp24.fcp_hdr.d_id[1],
233 atio->u.isp24.fcp_hdr.d_id[2]);
236 qlt_24xx_atio_pkt(host, atio);
240 case IMMED_NOTIFY_TYPE:
242 struct scsi_qla_host *host = vha;
243 struct imm_ntfy_from_isp *entry =
244 (struct imm_ntfy_from_isp *)atio;
246 if ((entry->u.isp24.vp_index != 0xFF) &&
247 (entry->u.isp24.nport_handle != 0xFFFF)) {
248 host = qlt_find_host_by_vp_idx(vha,
249 entry->u.isp24.vp_index);
250 if (unlikely(!host)) {
251 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
252 "qla_target(%d): Received "
253 "ATIO (IMMED_NOTIFY_TYPE) "
254 "with unknown vp_index %d\n",
255 vha->vp_idx, entry->u.isp24.vp_index);
259 qlt_24xx_atio_pkt(host, atio);
264 ql_dbg(ql_dbg_tgt, vha, 0xe040,
265 "qla_target(%d): Received unknown ATIO atio "
266 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
273 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
275 switch (pkt->entry_type) {
277 ql_dbg(ql_dbg_tgt, vha, 0xe073,
278 "qla_target(%d):%s: CRC2 Response pkt\n",
279 vha->vp_idx, __func__);
282 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
283 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
285 if (unlikely(!host)) {
286 ql_dbg(ql_dbg_tgt, vha, 0xe041,
287 "qla_target(%d): Response pkt (CTIO_TYPE7) "
288 "received, with unknown vp_index %d\n",
289 vha->vp_idx, entry->vp_index);
292 qlt_response_pkt(host, pkt);
296 case IMMED_NOTIFY_TYPE:
298 struct scsi_qla_host *host = vha;
299 struct imm_ntfy_from_isp *entry =
300 (struct imm_ntfy_from_isp *)pkt;
302 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
303 if (unlikely(!host)) {
304 ql_dbg(ql_dbg_tgt, vha, 0xe042,
305 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
306 "received, with unknown vp_index %d\n",
307 vha->vp_idx, entry->u.isp24.vp_index);
310 qlt_response_pkt(host, pkt);
314 case NOTIFY_ACK_TYPE:
316 struct scsi_qla_host *host = vha;
317 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
319 if (0xFF != entry->u.isp24.vp_index) {
320 host = qlt_find_host_by_vp_idx(vha,
321 entry->u.isp24.vp_index);
322 if (unlikely(!host)) {
323 ql_dbg(ql_dbg_tgt, vha, 0xe043,
324 "qla_target(%d): Response "
325 "pkt (NOTIFY_ACK_TYPE) "
326 "received, with unknown "
327 "vp_index %d\n", vha->vp_idx,
328 entry->u.isp24.vp_index);
332 qlt_response_pkt(host, pkt);
338 struct abts_recv_from_24xx *entry =
339 (struct abts_recv_from_24xx *)pkt;
340 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
342 if (unlikely(!host)) {
343 ql_dbg(ql_dbg_tgt, vha, 0xe044,
344 "qla_target(%d): Response pkt "
345 "(ABTS_RECV_24XX) received, with unknown "
346 "vp_index %d\n", vha->vp_idx, entry->vp_index);
349 qlt_response_pkt(host, pkt);
355 struct abts_resp_to_24xx *entry =
356 (struct abts_resp_to_24xx *)pkt;
357 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
359 if (unlikely(!host)) {
360 ql_dbg(ql_dbg_tgt, vha, 0xe045,
361 "qla_target(%d): Response pkt "
362 "(ABTS_RECV_24XX) received, with unknown "
363 "vp_index %d\n", vha->vp_idx, entry->vp_index);
366 qlt_response_pkt(host, pkt);
371 qlt_response_pkt(vha, pkt);
377 static void qlt_free_session_done(struct work_struct *work)
379 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
381 struct qla_tgt *tgt = sess->tgt;
382 struct scsi_qla_host *vha = sess->vha;
383 struct qla_hw_data *ha = vha->hw;
387 * Release the target session for FC Nexus from fabric module code.
389 if (sess->se_sess != NULL)
390 ha->tgt.tgt_ops->free_session(sess);
392 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
393 "Unregistration of sess %p finished\n", sess);
397 * We need to protect against race, when tgt is freed before or
401 if (tgt->sess_count == 0)
402 wake_up_all(&tgt->waitQ);
405 /* ha->hardware_lock supposed to be held on entry */
406 void qlt_unreg_sess(struct qla_tgt_sess *sess)
408 struct scsi_qla_host *vha = sess->vha;
410 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
412 list_del(&sess->sess_list_entry);
414 list_del(&sess->del_list_entry);
416 INIT_WORK(&sess->free_work, qlt_free_session_done);
417 schedule_work(&sess->free_work);
419 EXPORT_SYMBOL(qlt_unreg_sess);
421 /* ha->hardware_lock supposed to be held on entry */
422 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
424 struct qla_hw_data *ha = vha->hw;
425 struct qla_tgt_sess *sess = NULL;
426 uint32_t unpacked_lun, lun = 0;
429 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
430 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
432 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
433 if (loop_id == 0xFFFF) {
434 #if 0 /* FIXME: Re-enable Global event handling.. */
436 atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
437 qlt_clear_tgt_db(ha->tgt.qla_tgt);
438 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
439 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
440 typeof(*sess), sess_list_entry);
442 case QLA_TGT_NEXUS_LOSS_SESS:
443 mcmd = QLA_TGT_NEXUS_LOSS;
445 case QLA_TGT_ABORT_ALL_SESS:
446 mcmd = QLA_TGT_ABORT_ALL;
448 case QLA_TGT_NEXUS_LOSS:
449 case QLA_TGT_ABORT_ALL:
452 ql_dbg(ql_dbg_tgt, vha, 0xe046,
453 "qla_target(%d): Not allowed "
454 "command %x in %s", vha->vp_idx,
463 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
466 ql_dbg(ql_dbg_tgt, vha, 0xe000,
467 "Using sess for qla_tgt_reset: %p\n", sess);
473 ql_dbg(ql_dbg_tgt, vha, 0xe047,
474 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
475 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
478 lun = a->u.isp24.fcp_cmnd.lun;
479 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
481 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
482 iocb, QLA24XX_MGMT_SEND_NACK);
485 /* ha->hardware_lock supposed to be held on entry */
486 static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
489 struct qla_tgt *tgt = sess->tgt;
490 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
495 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
496 "Scheduling sess %p for deletion\n", sess);
497 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
503 sess->expires = jiffies + dev_loss_tmo * HZ;
505 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
506 "qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
507 "deletion in %u secs (expires: %lu) immed: %d\n",
508 sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
509 sess->expires, immediate);
512 schedule_delayed_work(&tgt->sess_del_work, 0);
514 schedule_delayed_work(&tgt->sess_del_work,
515 sess->expires - jiffies);
518 /* ha->hardware_lock supposed to be held on entry */
519 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
521 struct qla_tgt_sess *sess;
523 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
524 qlt_schedule_sess_for_deletion(sess, true);
526 /* At this point tgt could be already dead */
529 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
532 struct qla_hw_data *ha = vha->hw;
533 dma_addr_t gid_list_dma;
534 struct gid_list_info *gid_list;
539 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
540 &gid_list_dma, GFP_KERNEL);
542 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
543 "qla_target(%d): DMA Alloc failed of %u\n",
544 vha->vp_idx, qla2x00_gid_list_size(ha));
548 /* Get list of logged in devices */
549 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
550 if (rc != QLA_SUCCESS) {
551 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
552 "qla_target(%d): get_id_list() failed: %x\n",
555 goto out_free_id_list;
558 id_iter = (char *)gid_list;
560 for (i = 0; i < entries; i++) {
561 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
562 if ((gid->al_pa == s_id[2]) &&
563 (gid->area == s_id[1]) &&
564 (gid->domain == s_id[0])) {
565 *loop_id = le16_to_cpu(gid->loop_id);
569 id_iter += ha->gid_list_info_size;
573 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
574 gid_list, gid_list_dma);
578 /* ha->hardware_lock supposed to be held on entry */
579 static void qlt_undelete_sess(struct qla_tgt_sess *sess)
581 BUG_ON(!sess->deleted);
583 list_del(&sess->del_list_entry);
587 static void qlt_del_sess_work_fn(struct delayed_work *work)
589 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
591 struct scsi_qla_host *vha = tgt->vha;
592 struct qla_hw_data *ha = vha->hw;
593 struct qla_tgt_sess *sess;
594 unsigned long flags, elapsed;
596 spin_lock_irqsave(&ha->hardware_lock, flags);
597 while (!list_empty(&tgt->del_sess_list)) {
598 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
601 if (time_after_eq(elapsed, sess->expires)) {
602 qlt_undelete_sess(sess);
604 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
605 "Timeout: sess %p about to be deleted\n",
607 ha->tgt.tgt_ops->shutdown_sess(sess);
608 ha->tgt.tgt_ops->put_sess(sess);
610 schedule_delayed_work(&tgt->sess_del_work,
611 sess->expires - elapsed);
615 spin_unlock_irqrestore(&ha->hardware_lock, flags);
619 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
620 * Caller must put it.
622 static struct qla_tgt_sess *qlt_create_sess(
623 struct scsi_qla_host *vha,
627 struct qla_hw_data *ha = vha->hw;
628 struct qla_tgt_sess *sess;
630 unsigned char be_sid[3];
632 /* Check to avoid double sessions */
633 spin_lock_irqsave(&ha->hardware_lock, flags);
634 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
636 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
637 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
638 "Double sess %p found (s_id %x:%x:%x, "
639 "loop_id %d), updating to d_id %x:%x:%x, "
640 "loop_id %d", sess, sess->s_id.b.domain,
641 sess->s_id.b.al_pa, sess->s_id.b.area,
642 sess->loop_id, fcport->d_id.b.domain,
643 fcport->d_id.b.al_pa, fcport->d_id.b.area,
647 qlt_undelete_sess(sess);
649 kref_get(&sess->se_sess->sess_kref);
650 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
651 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
653 if (sess->local && !local)
655 spin_unlock_irqrestore(&ha->hardware_lock, flags);
660 spin_unlock_irqrestore(&ha->hardware_lock, flags);
662 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
664 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
665 "qla_target(%u): session allocation failed, all commands "
666 "from port %8phC will be refused", vha->vp_idx,
671 sess->tgt = vha->vha_tgt.qla_tgt;
673 sess->s_id = fcport->d_id;
674 sess->loop_id = fcport->loop_id;
677 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
678 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
679 sess, vha->vha_tgt.qla_tgt);
681 be_sid[0] = sess->s_id.b.domain;
682 be_sid[1] = sess->s_id.b.area;
683 be_sid[2] = sess->s_id.b.al_pa;
685 * Determine if this fc_port->port_name is allowed to access
686 * target mode using explict NodeACLs+MappedLUNs, or using
687 * TPG demo mode. If this is successful a target mode FC nexus
690 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
691 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
696 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
697 * access across ->hardware_lock reaquire.
699 kref_get(&sess->se_sess->sess_kref);
701 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
702 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
703 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
705 spin_lock_irqsave(&ha->hardware_lock, flags);
706 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
707 vha->vha_tgt.qla_tgt->sess_count++;
708 spin_unlock_irqrestore(&ha->hardware_lock, flags);
710 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
711 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
712 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
713 vha->vp_idx, local ? "local " : "", fcport->port_name,
714 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
715 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
721 * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
723 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
725 struct qla_hw_data *ha = vha->hw;
726 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
727 struct qla_tgt_sess *sess;
730 if (!vha->hw->tgt.tgt_ops)
733 if (!tgt || (fcport->port_type != FCT_INITIATOR))
736 if (qla_ini_mode_enabled(vha))
739 spin_lock_irqsave(&ha->hardware_lock, flags);
741 spin_unlock_irqrestore(&ha->hardware_lock, flags);
744 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
746 spin_unlock_irqrestore(&ha->hardware_lock, flags);
748 mutex_lock(&vha->vha_tgt.tgt_mutex);
749 sess = qlt_create_sess(vha, fcport, false);
750 mutex_unlock(&vha->vha_tgt.tgt_mutex);
752 spin_lock_irqsave(&ha->hardware_lock, flags);
754 kref_get(&sess->se_sess->sess_kref);
757 qlt_undelete_sess(sess);
759 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
760 "qla_target(%u): %ssession for port %8phC "
761 "(loop ID %d) reappeared\n", vha->vp_idx,
762 sess->local ? "local " : "", sess->port_name,
765 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
766 "Reappeared sess %p\n", sess);
768 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
769 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
772 if (sess && sess->local) {
773 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
774 "qla_target(%u): local session for "
775 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
776 fcport->port_name, sess->loop_id);
779 ha->tgt.tgt_ops->put_sess(sess);
780 spin_unlock_irqrestore(&ha->hardware_lock, flags);
783 void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
785 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
786 struct qla_tgt_sess *sess;
788 if (!vha->hw->tgt.tgt_ops)
791 if (!tgt || (fcport->port_type != FCT_INITIATOR))
797 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
802 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
805 qlt_schedule_sess_for_deletion(sess, false);
808 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
810 struct qla_hw_data *ha = tgt->ha;
814 * We need to protect against race, when tgt is freed before or
817 spin_lock_irqsave(&ha->hardware_lock, flags);
818 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
819 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
820 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
821 res = (tgt->sess_count == 0);
822 spin_unlock_irqrestore(&ha->hardware_lock, flags);
827 /* Called by tcm_qla2xxx configfs code */
828 int qlt_stop_phase1(struct qla_tgt *tgt)
830 struct scsi_qla_host *vha = tgt->vha;
831 struct qla_hw_data *ha = tgt->ha;
834 mutex_lock(&qla_tgt_mutex);
835 if (!vha->fc_vport) {
836 struct Scsi_Host *sh = vha->host;
837 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
840 spin_lock_irqsave(sh->host_lock, flags);
841 npiv_vports = (fc_host->npiv_vports_inuse);
842 spin_unlock_irqrestore(sh->host_lock, flags);
845 mutex_unlock(&qla_tgt_mutex);
849 if (tgt->tgt_stop || tgt->tgt_stopped) {
850 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
851 "Already in tgt->tgt_stop or tgt_stopped state\n");
852 mutex_unlock(&qla_tgt_mutex);
856 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
859 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
860 * Lock is needed, because we still can get an incoming packet.
862 mutex_lock(&vha->vha_tgt.tgt_mutex);
863 spin_lock_irqsave(&ha->hardware_lock, flags);
865 qlt_clear_tgt_db(tgt);
866 spin_unlock_irqrestore(&ha->hardware_lock, flags);
867 mutex_unlock(&vha->vha_tgt.tgt_mutex);
868 mutex_unlock(&qla_tgt_mutex);
870 flush_delayed_work(&tgt->sess_del_work);
872 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
873 "Waiting for sess works (tgt %p)", tgt);
874 spin_lock_irqsave(&tgt->sess_work_lock, flags);
875 while (!list_empty(&tgt->sess_works_list)) {
876 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
877 flush_scheduled_work();
878 spin_lock_irqsave(&tgt->sess_work_lock, flags);
880 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
882 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
883 "Waiting for tgt %p: list_empty(sess_list)=%d "
884 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
887 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
890 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
891 qlt_disable_vha(vha);
893 /* Wait for sessions to clear out (just in case) */
894 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
897 EXPORT_SYMBOL(qlt_stop_phase1);
899 /* Called by tcm_qla2xxx configfs code */
900 void qlt_stop_phase2(struct qla_tgt *tgt)
902 struct qla_hw_data *ha = tgt->ha;
903 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
906 if (tgt->tgt_stopped) {
907 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
908 "Already in tgt->tgt_stopped state\n");
913 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
914 "Waiting for %d IRQ commands to complete (tgt %p)",
915 tgt->irq_cmd_count, tgt);
917 mutex_lock(&vha->vha_tgt.tgt_mutex);
918 spin_lock_irqsave(&ha->hardware_lock, flags);
919 while (tgt->irq_cmd_count != 0) {
920 spin_unlock_irqrestore(&ha->hardware_lock, flags);
922 spin_lock_irqsave(&ha->hardware_lock, flags);
925 tgt->tgt_stopped = 1;
926 spin_unlock_irqrestore(&ha->hardware_lock, flags);
927 mutex_unlock(&vha->vha_tgt.tgt_mutex);
929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
932 EXPORT_SYMBOL(qlt_stop_phase2);
934 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
935 static void qlt_release(struct qla_tgt *tgt)
937 scsi_qla_host_t *vha = tgt->vha;
939 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
940 qlt_stop_phase2(tgt);
942 vha->vha_tgt.qla_tgt = NULL;
944 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
945 "Release of tgt %p finished\n", tgt);
950 /* ha->hardware_lock supposed to be held on entry */
951 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
952 const void *param, unsigned int param_size)
954 struct qla_tgt_sess_work_param *prm;
957 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
959 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
960 "qla_target(%d): Unable to create session "
961 "work, command will be refused", 0);
965 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
966 "Scheduling work (type %d, prm %p)"
967 " to find session for param %p (size %d, tgt %p)\n",
968 type, prm, param, param_size, tgt);
971 memcpy(&prm->tm_iocb, param, param_size);
973 spin_lock_irqsave(&tgt->sess_work_lock, flags);
974 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
975 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
977 schedule_work(&tgt->sess_work);
983 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
985 static void qlt_send_notify_ack(struct scsi_qla_host *vha,
986 struct imm_ntfy_from_isp *ntfy,
987 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
988 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
990 struct qla_hw_data *ha = vha->hw;
992 struct nack_to_isp *nack;
994 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
996 /* Send marker if required */
997 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1000 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1002 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1003 "qla_target(%d): %s failed: unable to allocate "
1004 "request packet\n", vha->vp_idx, __func__);
1008 if (vha->vha_tgt.qla_tgt != NULL)
1009 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1011 pkt->entry_type = NOTIFY_ACK_TYPE;
1012 pkt->entry_count = 1;
1014 nack = (struct nack_to_isp *)pkt;
1015 nack->ox_id = ntfy->ox_id;
1017 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1018 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1019 nack->u.isp24.flags = ntfy->u.isp24.flags &
1020 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1022 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1023 nack->u.isp24.status = ntfy->u.isp24.status;
1024 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1025 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1026 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1027 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1028 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1029 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1030 nack->u.isp24.srr_reject_code = srr_reject_code;
1031 nack->u.isp24.srr_reject_code_expl = srr_explan;
1032 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1034 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1035 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1036 vha->vp_idx, nack->u.isp24.status);
1038 /* Memory Barrier */
1040 qla2x00_start_iocbs(vha, vha->req);
1044 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1046 static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1047 struct abts_recv_from_24xx *abts, uint32_t status,
1050 struct qla_hw_data *ha = vha->hw;
1051 struct abts_resp_to_24xx *resp;
1055 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1056 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1059 /* Send marker if required */
1060 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1063 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
1065 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1066 "qla_target(%d): %s failed: unable to allocate "
1067 "request packet", vha->vp_idx, __func__);
1071 resp->entry_type = ABTS_RESP_24XX;
1072 resp->entry_count = 1;
1073 resp->nport_handle = abts->nport_handle;
1074 resp->vp_index = vha->vp_idx;
1075 resp->sof_type = abts->sof_type;
1076 resp->exchange_address = abts->exchange_address;
1077 resp->fcp_hdr_le = abts->fcp_hdr_le;
1078 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1079 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1080 F_CTL_SEQ_INITIATIVE);
1081 p = (uint8_t *)&f_ctl;
1082 resp->fcp_hdr_le.f_ctl[0] = *p++;
1083 resp->fcp_hdr_le.f_ctl[1] = *p++;
1084 resp->fcp_hdr_le.f_ctl[2] = *p;
1086 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1087 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1088 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1089 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1090 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1091 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1093 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1094 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1095 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1096 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1097 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1098 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1100 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1101 if (status == FCP_TMF_CMPL) {
1102 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1103 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1104 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1105 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1106 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1107 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1109 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1110 resp->payload.ba_rjt.reason_code =
1111 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1112 /* Other bytes are zero */
1115 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1117 /* Memory Barrier */
1119 qla2x00_start_iocbs(vha, vha->req);
1123 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1125 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1126 struct abts_resp_from_24xx_fw *entry)
1128 struct ctio7_to_24xx *ctio;
1130 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1131 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1132 /* Send marker if required */
1133 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1136 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
1138 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1139 "qla_target(%d): %s failed: unable to allocate "
1140 "request packet\n", vha->vp_idx, __func__);
1145 * We've got on entrance firmware's response on by us generated
1146 * ABTS response. So, in it ID fields are reversed.
1149 ctio->entry_type = CTIO_TYPE7;
1150 ctio->entry_count = 1;
1151 ctio->nport_handle = entry->nport_handle;
1152 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1153 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1154 ctio->vp_index = vha->vp_idx;
1155 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1156 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1157 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1158 ctio->exchange_addr = entry->exchange_addr_to_abort;
1159 ctio->u.status1.flags =
1160 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1161 CTIO7_FLAGS_TERMINATE);
1162 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
1164 /* Memory Barrier */
1166 qla2x00_start_iocbs(vha, vha->req);
1168 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1169 FCP_TMF_CMPL, true);
1172 /* ha->hardware_lock supposed to be held on entry */
1173 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1174 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1176 struct qla_hw_data *ha = vha->hw;
1177 struct se_session *se_sess = sess->se_sess;
1178 struct qla_tgt_mgmt_cmd *mcmd;
1179 struct se_cmd *se_cmd;
1182 bool found_lun = false;
1184 spin_lock(&se_sess->sess_cmd_lock);
1185 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1186 struct qla_tgt_cmd *cmd =
1187 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1188 if (se_cmd->tag == abts->exchange_addr_to_abort) {
1189 lun = cmd->unpacked_lun;
1194 spin_unlock(&se_sess->sess_cmd_lock);
1199 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1200 "qla_target(%d): task abort (tag=%d)\n",
1201 vha->vp_idx, abts->exchange_addr_to_abort);
1203 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1205 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1206 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1207 vha->vp_idx, __func__);
1210 memset(mcmd, 0, sizeof(*mcmd));
1213 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1214 mcmd->reset_count = vha->hw->chip_reset;
1216 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
1217 abts->exchange_addr_to_abort);
1219 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1220 "qla_target(%d): tgt_ops->handle_tmr()"
1221 " failed: %d", vha->vp_idx, rc);
1222 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1230 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1232 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1233 struct abts_recv_from_24xx *abts)
1235 struct qla_hw_data *ha = vha->hw;
1236 struct qla_tgt_sess *sess;
1237 uint32_t tag = abts->exchange_addr_to_abort;
1241 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1242 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1243 "qla_target(%d): ABTS: Abort Sequence not "
1244 "supported\n", vha->vp_idx);
1245 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1249 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1251 "qla_target(%d): ABTS: Unknown Exchange "
1252 "Address received\n", vha->vp_idx);
1253 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1257 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1258 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1259 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1260 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1261 le32_to_cpu(abts->fcp_hdr_le.parameter));
1263 s_id[0] = abts->fcp_hdr_le.s_id[2];
1264 s_id[1] = abts->fcp_hdr_le.s_id[1];
1265 s_id[2] = abts->fcp_hdr_le.s_id[0];
1267 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1269 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1270 "qla_target(%d): task abort for non-existant session\n",
1272 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
1273 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1275 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1281 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1283 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1284 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1286 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1292 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1294 static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1295 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1297 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1298 struct ctio7_to_24xx *ctio;
1301 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1302 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1303 ha, atio, resp_code);
1305 /* Send marker if required */
1306 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1309 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1311 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1312 "qla_target(%d): %s failed: unable to allocate "
1313 "request packet\n", ha->vp_idx, __func__);
1317 ctio->entry_type = CTIO_TYPE7;
1318 ctio->entry_count = 1;
1319 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1320 ctio->nport_handle = mcmd->sess->loop_id;
1321 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1322 ctio->vp_index = ha->vp_idx;
1323 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1324 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1325 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1326 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1327 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1328 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1329 CTIO7_FLAGS_SEND_STATUS);
1330 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1331 ctio->u.status1.ox_id = cpu_to_le16(temp);
1332 ctio->u.status1.scsi_status =
1333 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1334 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
1335 ctio->u.status1.sense_data[0] = resp_code;
1337 /* Memory Barrier */
1339 qla2x00_start_iocbs(ha, ha->req);
1342 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1344 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1346 EXPORT_SYMBOL(qlt_free_mcmd);
1348 /* callback from target fabric module code */
1349 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1351 struct scsi_qla_host *vha = mcmd->sess->vha;
1352 struct qla_hw_data *ha = vha->hw;
1353 unsigned long flags;
1355 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1356 "TM response mcmd (%p) status %#x state %#x",
1357 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1359 spin_lock_irqsave(&ha->hardware_lock, flags);
1361 if (qla2x00_reset_active(vha) || mcmd->reset_count != ha->chip_reset) {
1363 * Either a chip reset is active or this request was from
1364 * previous life, just abort the processing.
1366 ql_dbg(ql_dbg_async, vha, 0xe100,
1367 "RESET-TMR active/old-count/new-count = %d/%d/%d.\n",
1368 qla2x00_reset_active(vha), mcmd->reset_count,
1370 ha->tgt.tgt_ops->free_mcmd(mcmd);
1371 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1375 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1376 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1379 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1380 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1381 mcmd->fc_tm_rsp, false);
1383 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1387 * Make the callback for ->free_mcmd() to queue_work() and invoke
1388 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1389 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1390 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1391 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1392 * qlt_xmit_tm_rsp() returns here..
1394 ha->tgt.tgt_ops->free_mcmd(mcmd);
1395 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1397 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1400 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1402 struct qla_tgt_cmd *cmd = prm->cmd;
1404 BUG_ON(cmd->sg_cnt == 0);
1406 prm->sg = (struct scatterlist *)cmd->sg;
1407 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1408 cmd->sg_cnt, cmd->dma_data_direction);
1409 if (unlikely(prm->seg_cnt == 0))
1412 prm->cmd->sg_mapped = 1;
1414 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1416 * If greater than four sg entries then we need to allocate
1417 * the continuation entries
1419 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1420 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1421 prm->tgt->datasegs_per_cmd,
1422 prm->tgt->datasegs_per_cont);
1425 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1426 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1427 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1428 prm->tot_dsds = prm->seg_cnt;
1430 prm->tot_dsds = prm->seg_cnt;
1432 if (cmd->prot_sg_cnt) {
1433 prm->prot_sg = cmd->prot_sg;
1434 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1435 cmd->prot_sg, cmd->prot_sg_cnt,
1436 cmd->dma_data_direction);
1437 if (unlikely(prm->prot_seg_cnt == 0))
1440 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1441 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1442 /* Dif Bundling not support here */
1443 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1445 prm->tot_dsds += prm->prot_seg_cnt;
1447 prm->tot_dsds += prm->prot_seg_cnt;
1454 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1455 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1456 0, prm->cmd->sg_cnt);
1460 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
1462 struct qla_hw_data *ha = vha->hw;
1464 if (!cmd->sg_mapped)
1467 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1470 if (cmd->prot_sg_cnt)
1471 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1472 cmd->dma_data_direction);
1474 if (cmd->ctx_dsd_alloced)
1475 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1478 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
1481 static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1484 uint32_t cnt, cnt_in;
1486 if (vha->req->cnt < (req_cnt + 2)) {
1487 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
1488 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
1490 if (vha->req->ring_index < cnt)
1491 vha->req->cnt = cnt - vha->req->ring_index;
1493 vha->req->cnt = vha->req->length -
1494 (vha->req->ring_index - cnt);
1497 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1498 ql_dbg(ql_dbg_io, vha, 0x305a,
1499 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n",
1500 vha->vp_idx, vha->req->ring_index,
1501 vha->req->cnt, req_cnt, cnt, cnt_in, vha->req->length);
1504 vha->req->cnt -= req_cnt;
1510 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1512 static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1514 /* Adjust ring index. */
1515 vha->req->ring_index++;
1516 if (vha->req->ring_index == vha->req->length) {
1517 vha->req->ring_index = 0;
1518 vha->req->ring_ptr = vha->req->ring;
1520 vha->req->ring_ptr++;
1522 return (cont_entry_t *)vha->req->ring_ptr;
1525 /* ha->hardware_lock supposed to be held on entry */
1526 static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1528 struct qla_hw_data *ha = vha->hw;
1531 h = ha->tgt.current_handle;
1532 /* always increment cmd handle */
1535 if (h > DEFAULT_OUTSTANDING_COMMANDS)
1536 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1537 if (h == ha->tgt.current_handle) {
1538 ql_dbg(ql_dbg_io, vha, 0x305b,
1539 "qla_target(%d): Ran out of "
1540 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1541 h = QLA_TGT_NULL_HANDLE;
1544 } while ((h == QLA_TGT_NULL_HANDLE) ||
1545 (h == QLA_TGT_SKIP_HANDLE) ||
1546 (ha->tgt.cmds[h-1] != NULL));
1548 if (h != QLA_TGT_NULL_HANDLE)
1549 ha->tgt.current_handle = h;
1554 /* ha->hardware_lock supposed to be held on entry */
1555 static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1556 struct scsi_qla_host *vha)
1559 struct ctio7_to_24xx *pkt;
1560 struct qla_hw_data *ha = vha->hw;
1561 struct atio_from_isp *atio = &prm->cmd->atio;
1564 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1566 memset(pkt, 0, sizeof(*pkt));
1568 pkt->entry_type = CTIO_TYPE7;
1569 pkt->entry_count = (uint8_t)prm->req_cnt;
1570 pkt->vp_index = vha->vp_idx;
1572 h = qlt_make_handle(vha);
1573 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1575 * CTIO type 7 from the firmware doesn't provide a way to
1576 * know the initiator's LOOP ID, hence we can't find
1577 * the session and, so, the command.
1581 ha->tgt.cmds[h-1] = prm->cmd;
1583 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1584 pkt->nport_handle = prm->cmd->loop_id;
1585 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1586 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1587 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1588 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1589 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1590 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
1591 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1592 pkt->u.status0.ox_id = cpu_to_le16(temp);
1593 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1599 * ha->hardware_lock supposed to be held on entry. We have already made sure
1600 * that there is sufficient amount of request entries to not drop it.
1602 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1603 struct scsi_qla_host *vha)
1606 uint32_t *dword_ptr;
1607 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1609 /* Build continuation packets */
1610 while (prm->seg_cnt > 0) {
1611 cont_a64_entry_t *cont_pkt64 =
1612 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1615 * Make sure that from cont_pkt64 none of
1616 * 64-bit specific fields used for 32-bit
1617 * addressing. Cast to (cont_entry_t *) for
1621 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1623 cont_pkt64->entry_count = 1;
1624 cont_pkt64->sys_define = 0;
1626 if (enable_64bit_addressing) {
1627 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1629 (uint32_t *)&cont_pkt64->dseg_0_address;
1631 cont_pkt64->entry_type = CONTINUE_TYPE;
1633 (uint32_t *)&((cont_entry_t *)
1634 cont_pkt64)->dseg_0_address;
1637 /* Load continuation entry data segments */
1639 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1640 cnt++, prm->seg_cnt--) {
1642 cpu_to_le32(pci_dma_lo32
1643 (sg_dma_address(prm->sg)));
1644 if (enable_64bit_addressing) {
1646 cpu_to_le32(pci_dma_hi32
1650 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1652 prm->sg = sg_next(prm->sg);
1658 * ha->hardware_lock supposed to be held on entry. We have already made sure
1659 * that there is sufficient amount of request entries to not drop it.
1661 static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1662 struct scsi_qla_host *vha)
1665 uint32_t *dword_ptr;
1666 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1667 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1669 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1671 /* Setup packet address segment pointer */
1672 dword_ptr = pkt24->u.status0.dseg_0_address;
1674 /* Set total data segment count */
1676 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1678 if (prm->seg_cnt == 0) {
1679 /* No data transfer */
1685 /* If scatter gather */
1687 /* Load command entry data segments */
1689 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1690 cnt++, prm->seg_cnt--) {
1692 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1693 if (enable_64bit_addressing) {
1695 cpu_to_le32(pci_dma_hi32(
1696 sg_dma_address(prm->sg)));
1698 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1700 prm->sg = sg_next(prm->sg);
1703 qlt_load_cont_data_segments(prm, vha);
1706 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1708 return cmd->bufflen > 0;
1712 * Called without ha->hardware_lock held
1714 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1715 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1716 uint32_t *full_req_cnt)
1718 struct qla_tgt *tgt = cmd->tgt;
1719 struct scsi_qla_host *vha = tgt->vha;
1720 struct qla_hw_data *ha = vha->hw;
1721 struct se_cmd *se_cmd = &cmd->se_cmd;
1723 if (unlikely(cmd->aborted)) {
1724 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1725 "qla_target(%d): terminating exchange for aborted cmd=%p (se_cmd=%p, tag=%lld)",
1726 vha->vp_idx, cmd, se_cmd, se_cmd->tag);
1728 cmd->state = QLA_TGT_STATE_ABORTED;
1729 cmd->cmd_flags |= BIT_6;
1731 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1733 /* !! At this point cmd could be already freed !! */
1734 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1739 prm->rq_result = scsi_status;
1740 prm->sense_buffer = &cmd->sense_buffer[0];
1741 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1745 prm->add_status_pkt = 0;
1747 /* Send marker if required */
1748 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1751 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1752 if (qlt_pci_map_calc_cnt(prm) != 0)
1756 *full_req_cnt = prm->req_cnt;
1758 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1759 prm->residual = se_cmd->residual_count;
1760 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
1761 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
1762 prm->residual, se_cmd->tag,
1763 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1764 cmd->bufflen, prm->rq_result);
1765 prm->rq_result |= SS_RESIDUAL_UNDER;
1766 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1767 prm->residual = se_cmd->residual_count;
1768 ql_dbg(ql_dbg_io, vha, 0x305d,
1769 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
1770 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
1771 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
1772 prm->rq_result |= SS_RESIDUAL_OVER;
1775 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1777 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1778 * ignored in *xmit_response() below
1780 if (qlt_has_data(cmd)) {
1781 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1782 (IS_FWI2_CAPABLE(ha) &&
1783 (prm->rq_result != 0))) {
1784 prm->add_status_pkt = 1;
1793 static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1794 struct qla_tgt_cmd *cmd, int sending_sense)
1796 if (ha->tgt.enable_class_2)
1800 return cmd->conf_compl_supported;
1802 return ha->tgt.enable_explicit_conf &&
1803 cmd->conf_compl_supported;
1806 #ifdef CONFIG_QLA_TGT_DEBUG_SRR
1808 * Original taken from the XFS code
1810 static unsigned long qlt_srr_random(void)
1813 static unsigned long RandomValue;
1814 static DEFINE_SPINLOCK(lock);
1815 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1819 unsigned long flags;
1821 spin_lock_irqsave(&lock, flags);
1823 RandomValue = jiffies;
1829 rv = 16807 * lo - 2836 * hi;
1833 spin_unlock_irqrestore(&lock, flags);
1837 static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1839 #if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1840 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1842 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1843 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1844 "Dropping cmd %p (tag %d) status", cmd, se_cmd->tag);
1848 * It's currently not possible to simulate SRRs for FCP_WRITE without
1849 * a physical link layer failure, so don't even try here..
1851 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1854 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1855 ((qlt_srr_random() % 100) == 20)) {
1857 unsigned int tot_len = 0;
1860 leave = qlt_srr_random() % cmd->sg_cnt;
1862 for (i = 0; i < leave; i++)
1863 tot_len += cmd->sg[i].length;
1865 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1866 "Cutting cmd %p (tag %d) buffer"
1867 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1868 " cmd->sg_cnt %d)", cmd, se_cmd->tag, tot_len, leave,
1869 cmd->bufflen, cmd->sg_cnt);
1871 cmd->bufflen = tot_len;
1872 cmd->sg_cnt = leave;
1875 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1876 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1878 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1879 "Cutting cmd %p (tag %d) buffer head "
1880 "to offset %d (cmd->bufflen %d)", cmd, se_cmd->tag, offset,
1883 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1884 else if (qlt_set_data_offset(cmd, offset)) {
1885 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1886 "qlt_set_data_offset() failed (tag %d)", se_cmd->tag);
1891 static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1895 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1896 struct qla_tgt_prm *prm)
1898 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1899 (uint32_t)sizeof(ctio->u.status1.sense_data));
1900 ctio->u.status0.flags |=
1901 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1902 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1903 ctio->u.status0.flags |= __constant_cpu_to_le16(
1904 CTIO7_FLAGS_EXPLICIT_CONFORM |
1905 CTIO7_FLAGS_CONFORM_REQ);
1907 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1908 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1909 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1912 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1913 if (prm->cmd->se_cmd.scsi_status != 0) {
1914 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1915 "Skipping EXPLICIT_CONFORM and "
1916 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1917 "non GOOD status\n");
1918 goto skip_explict_conf;
1920 ctio->u.status1.flags |= __constant_cpu_to_le16(
1921 CTIO7_FLAGS_EXPLICIT_CONFORM |
1922 CTIO7_FLAGS_CONFORM_REQ);
1925 ctio->u.status1.flags &=
1926 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1927 ctio->u.status1.flags |=
1928 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1929 ctio->u.status1.scsi_status |=
1930 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1931 ctio->u.status1.sense_length =
1932 cpu_to_le16(prm->sense_buffer_len);
1933 for (i = 0; i < prm->sense_buffer_len/4; i++)
1934 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1935 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1937 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
1940 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
1941 "qla_target(%d): %d bytes of sense "
1942 "lost", prm->tgt->ha->vp_idx,
1943 prm->sense_buffer_len % 4);
1949 ctio->u.status1.flags &=
1950 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1951 ctio->u.status1.flags |=
1952 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1953 ctio->u.status1.sense_length = 0;
1954 memset(ctio->u.status1.sense_data, 0,
1955 sizeof(ctio->u.status1.sense_data));
1958 /* Sense with len > 24, is it possible ??? */
1965 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
1968 * Uncomment when corresponding SCSI changes are done.
1970 if (!sp->cmd->prot_chk)
1974 switch (se_cmd->prot_op) {
1975 case TARGET_PROT_DOUT_INSERT:
1976 case TARGET_PROT_DIN_STRIP:
1977 if (ql2xenablehba_err_chk >= 1)
1980 case TARGET_PROT_DOUT_PASS:
1981 case TARGET_PROT_DIN_PASS:
1982 if (ql2xenablehba_err_chk >= 2)
1985 case TARGET_PROT_DIN_INSERT:
1986 case TARGET_PROT_DOUT_STRIP:
1995 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
1999 qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
2001 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2003 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
2004 * have been immplemented by TCM, before AppTag is avail.
2005 * Look for modesense_handlers[]
2008 ctx->app_tag_mask[0] = 0x0;
2009 ctx->app_tag_mask[1] = 0x0;
2011 switch (se_cmd->prot_type) {
2012 case TARGET_DIF_TYPE0_PROT:
2014 * No check for ql2xenablehba_err_chk, as it would be an
2015 * I/O error if hba tag generation is not done.
2017 ctx->ref_tag = cpu_to_le32(lba);
2019 if (!qlt_hba_err_chk_enabled(se_cmd))
2022 /* enable ALL bytes of the ref tag */
2023 ctx->ref_tag_mask[0] = 0xff;
2024 ctx->ref_tag_mask[1] = 0xff;
2025 ctx->ref_tag_mask[2] = 0xff;
2026 ctx->ref_tag_mask[3] = 0xff;
2029 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2032 case TARGET_DIF_TYPE1_PROT:
2033 ctx->ref_tag = cpu_to_le32(lba);
2035 if (!qlt_hba_err_chk_enabled(se_cmd))
2038 /* enable ALL bytes of the ref tag */
2039 ctx->ref_tag_mask[0] = 0xff;
2040 ctx->ref_tag_mask[1] = 0xff;
2041 ctx->ref_tag_mask[2] = 0xff;
2042 ctx->ref_tag_mask[3] = 0xff;
2045 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2046 * match LBA in CDB + N
2048 case TARGET_DIF_TYPE2_PROT:
2049 ctx->ref_tag = cpu_to_le32(lba);
2051 if (!qlt_hba_err_chk_enabled(se_cmd))
2054 /* enable ALL bytes of the ref tag */
2055 ctx->ref_tag_mask[0] = 0xff;
2056 ctx->ref_tag_mask[1] = 0xff;
2057 ctx->ref_tag_mask[2] = 0xff;
2058 ctx->ref_tag_mask[3] = 0xff;
2061 /* For Type 3 protection: 16 bit GUARD only */
2062 case TARGET_DIF_TYPE3_PROT:
2063 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2064 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2071 qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2075 uint32_t transfer_length = 0;
2076 uint32_t data_bytes;
2078 uint8_t bundling = 1;
2080 struct crc_context *crc_ctx_pkt = NULL;
2081 struct qla_hw_data *ha;
2082 struct ctio_crc2_to_fw *pkt;
2083 dma_addr_t crc_ctx_dma;
2084 uint16_t fw_prot_opts = 0;
2085 struct qla_tgt_cmd *cmd = prm->cmd;
2086 struct se_cmd *se_cmd = &cmd->se_cmd;
2088 struct atio_from_isp *atio = &prm->cmd->atio;
2094 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2096 memset(pkt, 0, sizeof(*pkt));
2098 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2099 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2100 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2101 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2103 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2104 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2107 /* Compute dif len and adjust data len to incude protection */
2108 data_bytes = cmd->bufflen;
2109 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2111 switch (se_cmd->prot_op) {
2112 case TARGET_PROT_DIN_INSERT:
2113 case TARGET_PROT_DOUT_STRIP:
2114 transfer_length = data_bytes;
2115 data_bytes += dif_bytes;
2118 case TARGET_PROT_DIN_STRIP:
2119 case TARGET_PROT_DOUT_INSERT:
2120 case TARGET_PROT_DIN_PASS:
2121 case TARGET_PROT_DOUT_PASS:
2122 transfer_length = data_bytes + dif_bytes;
2130 if (!qlt_hba_err_chk_enabled(se_cmd))
2131 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2132 /* HBA error checking enabled */
2133 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2134 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2135 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2136 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2137 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2138 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2141 switch (se_cmd->prot_op) {
2142 case TARGET_PROT_DIN_INSERT:
2143 case TARGET_PROT_DOUT_INSERT:
2144 fw_prot_opts |= PO_MODE_DIF_INSERT;
2146 case TARGET_PROT_DIN_STRIP:
2147 case TARGET_PROT_DOUT_STRIP:
2148 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2150 case TARGET_PROT_DIN_PASS:
2151 case TARGET_PROT_DOUT_PASS:
2152 fw_prot_opts |= PO_MODE_DIF_PASS;
2153 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2155 default:/* Normal Request */
2156 fw_prot_opts |= PO_MODE_DIF_PASS;
2162 /* Update entry type to indicate Command Type CRC_2 IOCB */
2163 pkt->entry_type = CTIO_CRC2;
2164 pkt->entry_count = 1;
2165 pkt->vp_index = vha->vp_idx;
2167 h = qlt_make_handle(vha);
2168 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2170 * CTIO type 7 from the firmware doesn't provide a way to
2171 * know the initiator's LOOP ID, hence we can't find
2172 * the session and, so, the command.
2176 ha->tgt.cmds[h-1] = prm->cmd;
2179 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2180 pkt->nport_handle = prm->cmd->loop_id;
2181 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2182 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2183 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2184 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2185 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2187 /* silence compile warning */
2188 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2189 pkt->ox_id = cpu_to_le16(t16);
2191 t16 = (atio->u.isp24.attr << 9);
2192 pkt->flags |= cpu_to_le16(t16);
2193 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2195 /* Set transfer direction */
2196 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2197 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2198 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2199 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2202 pkt->dseg_count = prm->tot_dsds;
2203 /* Fibre channel byte count */
2204 pkt->transfer_length = cpu_to_le32(transfer_length);
2207 /* ----- CRC context -------- */
2209 /* Allocate CRC context from global pool */
2210 crc_ctx_pkt = cmd->ctx =
2211 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2214 goto crc_queuing_error;
2216 /* Zero out CTX area. */
2217 clr_ptr = (uint8_t *)crc_ctx_pkt;
2218 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2220 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2221 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2224 crc_ctx_pkt->handle = pkt->handle;
2226 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2228 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2229 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2230 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2234 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2237 * Configure Bundling if we need to fetch interlaving
2238 * protection PCI accesses
2240 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2241 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2242 crc_ctx_pkt->u.bundling.dseg_count =
2243 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2244 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2247 /* Finish the common fields of CRC pkt */
2248 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2249 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2250 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
2251 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0);
2254 /* Walks data segments */
2255 pkt->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
2257 if (!bundling && prm->prot_seg_cnt) {
2258 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2259 prm->tot_dsds, cmd))
2260 goto crc_queuing_error;
2261 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2262 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2263 goto crc_queuing_error;
2265 if (bundling && prm->prot_seg_cnt) {
2266 /* Walks dif segments */
2267 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
2269 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2270 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2271 prm->prot_seg_cnt, cmd))
2272 goto crc_queuing_error;
2277 /* Cleanup will be performed by the caller */
2279 return QLA_FUNCTION_FAILED;
2284 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2285 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2287 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2288 uint8_t scsi_status)
2290 struct scsi_qla_host *vha = cmd->vha;
2291 struct qla_hw_data *ha = vha->hw;
2292 struct ctio7_to_24xx *pkt;
2293 struct qla_tgt_prm prm;
2294 uint32_t full_req_cnt = 0;
2295 unsigned long flags = 0;
2298 memset(&prm, 0, sizeof(prm));
2299 qlt_check_srr_debug(cmd, &xmit_type);
2301 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
2302 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2303 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2304 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2307 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2309 if (unlikely(res != 0)) {
2310 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
2316 spin_lock_irqsave(&ha->hardware_lock, flags);
2318 if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
2320 * Either a chip reset is active or this request was from
2321 * previous life, just abort the processing.
2323 cmd->state = QLA_TGT_STATE_PROCESSED;
2324 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2325 ql_dbg(ql_dbg_async, vha, 0xe101,
2326 "RESET-RSP active/old-count/new-count = %d/%d/%d.\n",
2327 qla2x00_reset_active(vha), cmd->reset_count,
2329 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2333 /* Does F/W have an IOCBs for this request */
2334 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2336 goto out_unmap_unlock;
2338 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2339 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2341 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2342 if (unlikely(res != 0))
2343 goto out_unmap_unlock;
2346 pkt = (struct ctio7_to_24xx *)prm.pkt;
2348 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2349 pkt->u.status0.flags |=
2350 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2351 CTIO7_FLAGS_STATUS_MODE_0);
2353 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2354 qlt_load_data_segments(&prm, vha);
2356 if (prm.add_status_pkt == 0) {
2357 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2358 pkt->u.status0.scsi_status =
2359 cpu_to_le16(prm.rq_result);
2360 pkt->u.status0.residual =
2361 cpu_to_le32(prm.residual);
2362 pkt->u.status0.flags |= __constant_cpu_to_le16(
2363 CTIO7_FLAGS_SEND_STATUS);
2364 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2365 pkt->u.status0.flags |=
2366 __constant_cpu_to_le16(
2367 CTIO7_FLAGS_EXPLICIT_CONFORM |
2368 CTIO7_FLAGS_CONFORM_REQ);
2374 * We have already made sure that there is sufficient
2375 * amount of request entries to not drop HW lock in
2378 struct ctio7_to_24xx *ctio =
2379 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2381 ql_dbg(ql_dbg_io, vha, 0x305e,
2382 "Building additional status packet 0x%p.\n",
2386 * T10Dif: ctio_crc2_to_fw overlay ontop of
2389 memcpy(ctio, pkt, sizeof(*ctio));
2390 /* reset back to CTIO7 */
2391 ctio->entry_count = 1;
2392 ctio->entry_type = CTIO_TYPE7;
2393 ctio->dseg_count = 0;
2394 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
2395 CTIO7_FLAGS_DATA_IN);
2397 /* Real finish is ctio_m1's finish */
2398 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
2399 pkt->u.status0.flags |= __constant_cpu_to_le16(
2400 CTIO7_FLAGS_DONT_RET_CTIO);
2402 /* qlt_24xx_init_ctio_to_isp will correct
2403 * all neccessary fields that's part of CTIO7.
2404 * There should be no residual of CTIO-CRC2 data.
2406 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2408 pr_debug("Status CTIO7: %p\n", ctio);
2411 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2414 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
2415 cmd->cmd_sent_to_fw = 1;
2417 /* Memory Barrier */
2419 qla2x00_start_iocbs(vha, vha->req);
2420 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2425 qlt_unmap_sg(vha, cmd);
2426 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2430 EXPORT_SYMBOL(qlt_xmit_response);
2432 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2434 struct ctio7_to_24xx *pkt;
2435 struct scsi_qla_host *vha = cmd->vha;
2436 struct qla_hw_data *ha = vha->hw;
2437 struct qla_tgt *tgt = cmd->tgt;
2438 struct qla_tgt_prm prm;
2439 unsigned long flags;
2442 memset(&prm, 0, sizeof(prm));
2448 /* Send marker if required */
2449 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2452 /* Calculate number of entries and segments required */
2453 if (qlt_pci_map_calc_cnt(&prm) != 0)
2456 spin_lock_irqsave(&ha->hardware_lock, flags);
2458 if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
2460 * Either a chip reset is active or this request was from
2461 * previous life, just abort the processing.
2463 cmd->state = QLA_TGT_STATE_NEED_DATA;
2464 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2465 ql_dbg(ql_dbg_async, vha, 0xe102,
2466 "RESET-XFR active/old-count/new-count = %d/%d/%d.\n",
2467 qla2x00_reset_active(vha), cmd->reset_count,
2469 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2473 /* Does F/W have an IOCBs for this request */
2474 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2476 goto out_unlock_free_unmap;
2477 if (cmd->se_cmd.prot_op)
2478 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2480 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2482 if (unlikely(res != 0))
2483 goto out_unlock_free_unmap;
2484 pkt = (struct ctio7_to_24xx *)prm.pkt;
2485 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2486 CTIO7_FLAGS_STATUS_MODE_0);
2488 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2489 qlt_load_data_segments(&prm, vha);
2491 cmd->state = QLA_TGT_STATE_NEED_DATA;
2492 cmd->cmd_sent_to_fw = 1;
2494 /* Memory Barrier */
2496 qla2x00_start_iocbs(vha, vha->req);
2497 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2501 out_unlock_free_unmap:
2502 qlt_unmap_sg(vha, cmd);
2503 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2507 EXPORT_SYMBOL(qlt_rdy_to_xfer);
2511 * Checks the guard or meta-data for the type of error
2512 * detected by the HBA.
2515 qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2516 struct ctio_crc_from_fw *sts)
2518 uint8_t *ap = &sts->actual_dif[0];
2519 uint8_t *ep = &sts->expected_dif[0];
2520 uint32_t e_ref_tag, a_ref_tag;
2521 uint16_t e_app_tag, a_app_tag;
2522 uint16_t e_guard, a_guard;
2523 uint64_t lba = cmd->se_cmd.t_task_lba;
2525 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2526 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2527 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2529 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2530 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2531 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2533 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2534 "iocb(s) %p Returned STATUS.\n", sts);
2536 ql_dbg(ql_dbg_tgt, vha, 0xf075,
2537 "dif check TGT cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n",
2538 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2539 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2543 * For type 3: ref & app tag is all 'f's
2544 * For type 0,1,2: app tag is all 'f's
2546 if ((a_app_tag == 0xffff) &&
2547 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2548 (a_ref_tag == 0xffffffff))) {
2549 uint32_t blocks_done;
2551 /* 2TB boundary case covered automatically with this */
2552 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2553 cmd->se_cmd.bad_sector = e_ref_tag;
2554 cmd->se_cmd.pi_err = 0;
2555 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2556 "need to return scsi good\n");
2558 /* Update protection tag */
2559 if (cmd->prot_sg_cnt) {
2560 uint32_t i, j = 0, k = 0, num_ent;
2561 struct scatterlist *sg, *sgl;
2566 /* Patch the corresponding protection tags */
2567 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2568 num_ent = sg_dma_len(sg) / 8;
2569 if (k + num_ent < blocks_done) {
2573 j = blocks_done - k - 1;
2578 if (k != blocks_done) {
2579 ql_log(ql_log_warn, vha, 0xf076,
2580 "unexpected tag values tag:lba=%u:%llu)\n",
2581 e_ref_tag, (unsigned long long)lba);
2586 struct sd_dif_tuple *spt;
2588 * This section came from initiator. Is it valid here?
2589 * should ulp be override with actual val???
2591 spt = page_address(sg_page(sg)) + sg->offset;
2594 spt->app_tag = 0xffff;
2595 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2596 spt->ref_tag = 0xffffffff;
2604 if (e_guard != a_guard) {
2605 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2606 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2608 ql_log(ql_log_warn, vha, 0xe076,
2609 "Guard ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
2610 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2611 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2612 a_guard, e_guard, cmd);
2617 if (e_ref_tag != a_ref_tag) {
2618 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
2619 cmd->se_cmd.bad_sector = e_ref_tag;
2621 ql_log(ql_log_warn, vha, 0xe077,
2622 "Ref Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
2623 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2624 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2625 a_guard, e_guard, cmd);
2629 /* check appl tag */
2630 if (e_app_tag != a_app_tag) {
2631 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
2632 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2634 ql_log(ql_log_warn, vha, 0xe078,
2635 "App Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
2636 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2637 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2638 a_guard, e_guard, cmd);
2646 /* If hardware_lock held on entry, might drop it, then reaquire */
2647 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2648 static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2649 struct qla_tgt_cmd *cmd,
2650 struct atio_from_isp *atio)
2652 struct ctio7_to_24xx *ctio24;
2653 struct qla_hw_data *ha = vha->hw;
2658 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2660 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
2662 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2663 "qla_target(%d): %s failed: unable to allocate "
2664 "request packet\n", vha->vp_idx, __func__);
2669 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2670 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2671 "qla_target(%d): Terminating cmd %p with "
2672 "incorrect state %d\n", vha->vp_idx, cmd,
2678 pkt->entry_count = 1;
2679 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2681 ctio24 = (struct ctio7_to_24xx *)pkt;
2682 ctio24->entry_type = CTIO_TYPE7;
2683 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2684 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2685 ctio24->vp_index = vha->vp_idx;
2686 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2687 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2688 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2689 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2690 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2691 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2692 CTIO7_FLAGS_TERMINATE);
2693 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2694 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2696 /* Most likely, it isn't needed */
2697 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2698 &atio->u.isp24.fcp_cmnd.add_cdb[
2699 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2700 if (ctio24->u.status1.residual != 0)
2701 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2703 /* Memory Barrier */
2705 qla2x00_start_iocbs(vha, vha->req);
2709 static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2710 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2712 unsigned long flags;
2715 if (qlt_issue_marker(vha, ha_locked) < 0)
2719 rc = __qlt_send_term_exchange(vha, cmd, atio);
2721 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2724 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2725 rc = __qlt_send_term_exchange(vha, cmd, atio);
2727 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2728 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2731 if (cmd && ((cmd->state != QLA_TGT_STATE_ABORTED) ||
2732 !cmd->cmd_sent_to_fw)) {
2733 if (!ha_locked && !in_interrupt())
2734 msleep(250); /* just in case */
2736 qlt_unmap_sg(vha, cmd);
2737 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2742 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
2744 struct list_head free_list;
2745 struct qla_tgt_cmd *cmd, *tcmd;
2747 vha->hw->tgt.leak_exchg_thresh_hold =
2748 (vha->hw->fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
2751 if (!list_empty(&vha->hw->tgt.q_full_list)) {
2752 INIT_LIST_HEAD(&free_list);
2753 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
2755 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
2756 list_del(&cmd->cmd_list);
2757 /* This cmd was never sent to TCM. There is no need
2758 * to schedule free or call free_cmd
2761 vha->hw->tgt.num_qfull_cmds_alloc--;
2764 vha->hw->tgt.num_qfull_cmds_dropped = 0;
2767 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
2769 uint32_t total_leaked;
2771 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
2773 if (vha->hw->tgt.leak_exchg_thresh_hold &&
2774 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
2776 ql_dbg(ql_dbg_tgt, vha, 0xe079,
2777 "Chip reset due to exchange starvation: %d/%d.\n",
2778 total_leaked, vha->hw->fw_xcb_count);
2780 if (IS_P3P_TYPE(vha->hw))
2781 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2783 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2784 qla2xxx_wake_dpc(vha);
2789 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2791 struct qla_tgt_sess *sess = cmd->sess;
2793 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
2794 "%s: se_cmd[%p] ox_id %04x\n",
2795 __func__, &cmd->se_cmd,
2796 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2798 BUG_ON(cmd->cmd_in_wq);
2801 qlt_decr_num_pend_cmds(cmd->vha);
2803 BUG_ON(cmd->sg_mapped);
2804 cmd->jiffies_at_free = get_jiffies_64();
2805 if (unlikely(cmd->free_sg))
2808 if (!sess || !sess->se_sess) {
2812 cmd->jiffies_at_free = get_jiffies_64();
2813 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2815 EXPORT_SYMBOL(qlt_free_cmd);
2817 /* ha->hardware_lock supposed to be held on entry */
2818 static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2819 struct qla_tgt_cmd *cmd, void *ctio)
2821 struct qla_tgt_srr_ctio *sc;
2822 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2823 struct qla_tgt_srr_imm *imm;
2826 cmd->cmd_flags |= BIT_15;
2828 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2829 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2832 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2833 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2838 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2841 /* IRQ is already OFF */
2842 spin_lock(&tgt->srr_lock);
2843 sc->srr_id = tgt->ctio_srr_id;
2844 list_add_tail(&sc->srr_list_entry,
2845 &tgt->srr_ctio_list);
2846 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2847 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2848 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2850 list_for_each_entry(imm, &tgt->srr_imm_list,
2852 if (imm->srr_id == sc->srr_id) {
2858 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2859 "Scheduling srr work\n");
2860 schedule_work(&tgt->srr_work);
2862 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2863 "qla_target(%d): imm_srr_id "
2864 "== ctio_srr_id (%d), but there is no "
2865 "corresponding SRR IMM, deleting CTIO "
2866 "SRR %p\n", vha->vp_idx,
2867 tgt->ctio_srr_id, sc);
2868 list_del(&sc->srr_list_entry);
2869 spin_unlock(&tgt->srr_lock);
2875 spin_unlock(&tgt->srr_lock);
2877 struct qla_tgt_srr_imm *ti;
2879 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2880 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2882 spin_lock(&tgt->srr_lock);
2883 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2885 if (imm->srr_id == tgt->ctio_srr_id) {
2886 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2887 "IMM SRR %p deleted (id %d)\n",
2889 list_del(&imm->srr_list_entry);
2890 qlt_reject_free_srr_imm(vha, imm, 1);
2893 spin_unlock(&tgt->srr_lock);
2902 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2904 static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2905 struct qla_tgt_cmd *cmd, uint32_t status)
2910 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2912 __constant_cpu_to_le16(OF_TERM_EXCH));
2917 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2922 /* ha->hardware_lock supposed to be held on entry */
2923 static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2926 struct qla_hw_data *ha = vha->hw;
2929 if (ha->tgt.cmds[handle] != NULL) {
2930 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2931 ha->tgt.cmds[handle] = NULL;
2937 /* ha->hardware_lock supposed to be held on entry */
2938 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2939 uint32_t handle, void *ctio)
2941 struct qla_tgt_cmd *cmd = NULL;
2943 /* Clear out internal marks */
2944 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2945 CTIO_INTERMEDIATE_HANDLE_MARK);
2947 if (handle != QLA_TGT_NULL_HANDLE) {
2948 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
2951 /* handle-1 is actually used */
2952 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2953 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2954 "qla_target(%d): Wrong handle %x received\n",
2955 vha->vp_idx, handle);
2958 cmd = qlt_get_cmd(vha, handle);
2959 if (unlikely(cmd == NULL)) {
2960 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2961 "qla_target(%d): Suspicious: unable to "
2962 "find the command with handle %x\n", vha->vp_idx,
2966 } else if (ctio != NULL) {
2967 /* We can't get loop ID from CTIO7 */
2968 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2969 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2970 "support NULL handles\n", vha->vp_idx);
2977 /* hardware_lock should be held by caller. */
2979 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2981 struct qla_hw_data *ha = vha->hw;
2985 qlt_unmap_sg(vha, cmd);
2987 handle = qlt_make_handle(vha);
2989 /* TODO: fix debug message type and ids. */
2990 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
2991 ql_dbg(ql_dbg_io, vha, 0xff00,
2992 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
2993 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2994 cmd->write_data_transferred = 0;
2995 cmd->state = QLA_TGT_STATE_DATA_IN;
2997 ql_dbg(ql_dbg_io, vha, 0xff01,
2998 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
3000 ha->tgt.tgt_ops->handle_data(cmd);
3002 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
3003 ql_dbg(ql_dbg_io, vha, 0xff02,
3004 "HOST-ABORT: handle=%d, state=ABORTED.\n", handle);
3006 ql_dbg(ql_dbg_io, vha, 0xff03,
3007 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
3012 cmd->cmd_flags |= BIT_12;
3013 ha->tgt.tgt_ops->free_cmd(cmd);
3017 qlt_host_reset_handler(struct qla_hw_data *ha)
3019 struct qla_tgt_cmd *cmd;
3020 unsigned long flags;
3021 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
3022 scsi_qla_host_t *vha = NULL;
3023 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
3026 if (!base_vha->hw->tgt.tgt_ops)
3029 if (!tgt || qla_ini_mode_enabled(base_vha)) {
3030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
3031 "Target mode disabled\n");
3035 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
3036 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
3037 base_vha->dpc_flags);
3039 spin_lock_irqsave(&ha->hardware_lock, flags);
3040 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
3041 cmd = qlt_get_cmd(base_vha, i);
3044 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
3046 qlt_abort_cmd_on_host_reset(vha, cmd);
3048 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3053 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3055 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
3056 uint32_t status, void *ctio)
3058 struct qla_hw_data *ha = vha->hw;
3059 struct se_cmd *se_cmd;
3060 const struct target_core_fabric_ops *tfo;
3061 struct qla_tgt_cmd *cmd;
3063 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3064 /* That could happen only in case of an error/reset/abort */
3065 if (status != CTIO_SUCCESS) {
3066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3067 "Intermediate CTIO received"
3068 " (status %x)\n", status);
3073 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
3077 se_cmd = &cmd->se_cmd;
3078 tfo = se_cmd->se_tfo;
3079 cmd->cmd_sent_to_fw = 0;
3081 qlt_unmap_sg(vha, cmd);
3083 if (unlikely(status != CTIO_SUCCESS)) {
3084 switch (status & 0xFFFF) {
3085 case CTIO_LIP_RESET:
3086 case CTIO_TARGET_RESET:
3088 /* driver request abort via Terminate exchange */
3090 case CTIO_INVALID_RX_ID:
3092 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3093 "qla_target(%d): CTIO with "
3094 "status %#x received, state %x, se_cmd %p, "
3095 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3096 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3097 status, cmd->state, se_cmd);
3100 case CTIO_PORT_LOGGED_OUT:
3101 case CTIO_PORT_UNAVAILABLE:
3102 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3103 "qla_target(%d): CTIO with PORT LOGGED "
3104 "OUT (29) or PORT UNAVAILABLE (28) status %x "
3105 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3106 status, cmd->state, se_cmd);
3109 case CTIO_SRR_RECEIVED:
3110 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
3111 "qla_target(%d): CTIO with SRR_RECEIVED"
3112 " status %x received (state %x, se_cmd %p)\n",
3113 vha->vp_idx, status, cmd->state, se_cmd);
3114 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
3119 case CTIO_DIF_ERROR: {
3120 struct ctio_crc_from_fw *crc =
3121 (struct ctio_crc_from_fw *)ctio;
3122 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3123 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
3124 vha->vp_idx, status, cmd->state, se_cmd,
3125 *((u64 *)&crc->actual_dif[0]),
3126 *((u64 *)&crc->expected_dif[0]));
3128 if (qlt_handle_dif_error(vha, cmd, ctio)) {
3129 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3130 /* scsi Write/xfer rdy complete */
3133 /* scsi read/xmit respond complete
3134 * call handle dif to send scsi status
3135 * rather than terminate exchange.
3137 cmd->state = QLA_TGT_STATE_PROCESSED;
3138 ha->tgt.tgt_ops->handle_dif_err(cmd);
3142 /* Need to generate a SCSI good completion.
3143 * because FW did not send scsi status.
3151 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
3152 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
3153 vha->vp_idx, status, cmd->state, se_cmd);
3158 /* "cmd->state == QLA_TGT_STATE_ABORTED" means
3159 * cmd is already aborted/terminated, we don't
3160 * need to terminate again. The exchange is already
3161 * cleaned up/freed at FW level. Just cleanup at driver
3164 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3165 (cmd->state != QLA_TGT_STATE_ABORTED)) {
3166 cmd->cmd_flags |= BIT_13;
3167 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3173 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3175 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3178 cmd->state = QLA_TGT_STATE_DATA_IN;
3180 if (unlikely(status != CTIO_SUCCESS))
3183 cmd->write_data_transferred = 1;
3185 ha->tgt.tgt_ops->handle_data(cmd);
3187 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
3188 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3189 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
3191 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3192 "qla_target(%d): A command in state (%d) should "
3193 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3196 if (unlikely(status != CTIO_SUCCESS) &&
3197 (cmd->state != QLA_TGT_STATE_ABORTED)) {
3198 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3203 ha->tgt.tgt_ops->free_cmd(cmd);
3206 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3211 switch (task_codes) {
3212 case ATIO_SIMPLE_QUEUE:
3213 fcp_task_attr = TCM_SIMPLE_TAG;
3215 case ATIO_HEAD_OF_QUEUE:
3216 fcp_task_attr = TCM_HEAD_TAG;
3218 case ATIO_ORDERED_QUEUE:
3219 fcp_task_attr = TCM_ORDERED_TAG;
3221 case ATIO_ACA_QUEUE:
3222 fcp_task_attr = TCM_ACA_TAG;
3225 fcp_task_attr = TCM_SIMPLE_TAG;
3228 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3229 "qla_target: unknown task code %x, use ORDERED instead\n",
3231 fcp_task_attr = TCM_ORDERED_TAG;
3235 return fcp_task_attr;
3238 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3241 * Process context for I/O path into tcm_qla2xxx code
3243 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
3245 scsi_qla_host_t *vha = cmd->vha;
3246 struct qla_hw_data *ha = vha->hw;
3247 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
3248 struct qla_tgt_sess *sess = cmd->sess;
3249 struct atio_from_isp *atio = &cmd->atio;
3251 unsigned long flags;
3252 uint32_t data_length;
3253 int ret, fcp_task_attr, data_dir, bidi = 0;
3256 cmd->cmd_flags |= BIT_1;
3260 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
3261 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
3262 cmd->unpacked_lun = scsilun_to_int(
3263 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3265 if (atio->u.isp24.fcp_cmnd.rddata &&
3266 atio->u.isp24.fcp_cmnd.wrdata) {
3268 data_dir = DMA_TO_DEVICE;
3269 } else if (atio->u.isp24.fcp_cmnd.rddata)
3270 data_dir = DMA_FROM_DEVICE;
3271 else if (atio->u.isp24.fcp_cmnd.wrdata)
3272 data_dir = DMA_TO_DEVICE;
3274 data_dir = DMA_NONE;
3276 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3277 atio->u.isp24.fcp_cmnd.task_attr);
3278 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3279 &atio->u.isp24.fcp_cmnd.add_cdb[
3280 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3282 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3283 fcp_task_attr, data_dir, bidi);
3287 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3289 spin_lock_irqsave(&ha->hardware_lock, flags);
3290 ha->tgt.tgt_ops->put_sess(sess);
3291 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3295 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
3297 * cmd has not sent to target yet, so pass NULL as the second
3298 * argument to qlt_send_term_exchange() and free the memory here.
3300 cmd->cmd_flags |= BIT_2;
3301 spin_lock_irqsave(&ha->hardware_lock, flags);
3302 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
3304 qlt_decr_num_pend_cmds(vha);
3305 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3306 ha->tgt.tgt_ops->put_sess(sess);
3307 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3310 static void qlt_do_work(struct work_struct *work)
3312 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
3317 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
3318 struct qla_tgt_sess *sess,
3319 struct atio_from_isp *atio)
3321 struct se_session *se_sess = sess->se_sess;
3322 struct qla_tgt_cmd *cmd;
3325 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3329 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3330 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3332 memcpy(&cmd->atio, atio, sizeof(*atio));
3333 cmd->state = QLA_TGT_STATE_NEW;
3334 cmd->tgt = vha->vha_tgt.qla_tgt;
3335 qlt_incr_num_pend_cmds(vha);
3337 cmd->se_cmd.map_tag = tag;
3339 cmd->loop_id = sess->loop_id;
3340 cmd->conf_compl_supported = sess->conf_compl_supported;
3345 static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
3348 static void qlt_create_sess_from_atio(struct work_struct *work)
3350 struct qla_tgt_sess_op *op = container_of(work,
3351 struct qla_tgt_sess_op, work);
3352 scsi_qla_host_t *vha = op->vha;
3353 struct qla_hw_data *ha = vha->hw;
3354 struct qla_tgt_sess *sess;
3355 struct qla_tgt_cmd *cmd;
3356 unsigned long flags;
3357 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
3359 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
3360 "qla_target(%d): Unable to find wwn login"
3361 " (s_id %x:%x:%x), trying to create it manually\n",
3362 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
3364 if (op->atio.u.raw.entry_count > 1) {
3365 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
3366 "Dropping multy entry atio %p\n", &op->atio);
3370 mutex_lock(&vha->vha_tgt.tgt_mutex);
3371 sess = qlt_make_local_sess(vha, s_id);
3372 /* sess has an extra creation ref. */
3373 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3378 * Now obtain a pre-allocated session tag using the original op->atio
3379 * packet header, and dispatch into __qlt_do_work() using the existing
3382 cmd = qlt_get_tag(vha, sess, &op->atio);
3384 spin_lock_irqsave(&ha->hardware_lock, flags);
3385 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
3386 ha->tgt.tgt_ops->put_sess(sess);
3387 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3392 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release
3393 * the extra reference taken above by qlt_make_local_sess()
3400 spin_lock_irqsave(&ha->hardware_lock, flags);
3401 qlt_send_term_exchange(vha, NULL, &op->atio, 1);
3402 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3407 /* ha->hardware_lock supposed to be held on entry */
3408 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3409 struct atio_from_isp *atio)
3411 struct qla_hw_data *ha = vha->hw;
3412 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
3413 struct qla_tgt_sess *sess;
3414 struct qla_tgt_cmd *cmd;
3416 if (unlikely(tgt->tgt_stop)) {
3417 ql_dbg(ql_dbg_io, vha, 0x3061,
3418 "New command while device %p is shutting down\n", tgt);
3422 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
3423 if (unlikely(!sess)) {
3424 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
3429 memcpy(&op->atio, atio, sizeof(*atio));
3431 INIT_WORK(&op->work, qlt_create_sess_from_atio);
3432 queue_work(qla_tgt_wq, &op->work);
3436 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
3438 kref_get(&sess->se_sess->sess_kref);
3440 cmd = qlt_get_tag(vha, sess, atio);
3442 ql_dbg(ql_dbg_io, vha, 0x3062,
3443 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
3444 ha->tgt.tgt_ops->put_sess(sess);
3449 cmd->jiffies_at_alloc = get_jiffies_64();
3451 cmd->reset_count = vha->hw->chip_reset;
3454 cmd->cmd_flags |= BIT_0;
3455 INIT_WORK(&cmd->work, qlt_do_work);
3456 queue_work(qla_tgt_wq, &cmd->work);
3461 /* ha->hardware_lock supposed to be held on entry */
3462 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
3463 int fn, void *iocb, int flags)
3465 struct scsi_qla_host *vha = sess->vha;
3466 struct qla_hw_data *ha = vha->hw;
3467 struct qla_tgt_mgmt_cmd *mcmd;
3471 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3473 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
3474 "qla_target(%d): Allocation of management "
3475 "command failed, some commands and their data could "
3476 "leak\n", vha->vp_idx);
3479 memset(mcmd, 0, sizeof(*mcmd));
3483 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3484 sizeof(mcmd->orig_iocb.imm_ntfy));
3486 mcmd->tmr_func = fn;
3487 mcmd->flags = flags;
3488 mcmd->reset_count = vha->hw->chip_reset;
3491 case QLA_TGT_CLEAR_ACA:
3492 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
3493 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
3494 tmr_func = TMR_CLEAR_ACA;
3497 case QLA_TGT_TARGET_RESET:
3498 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
3499 "qla_target(%d): TARGET_RESET received\n",
3501 tmr_func = TMR_TARGET_WARM_RESET;
3504 case QLA_TGT_LUN_RESET:
3505 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
3506 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
3507 tmr_func = TMR_LUN_RESET;
3510 case QLA_TGT_CLEAR_TS:
3511 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
3512 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
3513 tmr_func = TMR_CLEAR_TASK_SET;
3516 case QLA_TGT_ABORT_TS:
3517 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
3518 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
3519 tmr_func = TMR_ABORT_TASK_SET;
3522 case QLA_TGT_ABORT_ALL:
3523 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
3524 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
3529 case QLA_TGT_ABORT_ALL_SESS:
3530 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
3531 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
3536 case QLA_TGT_NEXUS_LOSS_SESS:
3537 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
3538 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
3543 case QLA_TGT_NEXUS_LOSS:
3544 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
3545 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
3550 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
3551 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
3552 sess->vha->vp_idx, fn);
3553 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3557 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
3559 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
3560 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
3561 sess->vha->vp_idx, res);
3562 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3569 /* ha->hardware_lock supposed to be held on entry */
3570 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
3572 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3573 struct qla_hw_data *ha = vha->hw;
3574 struct qla_tgt *tgt;
3575 struct qla_tgt_sess *sess;
3576 uint32_t lun, unpacked_lun;
3579 tgt = vha->vha_tgt.qla_tgt;
3581 lun = a->u.isp24.fcp_cmnd.lun;
3582 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
3583 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
3584 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3585 a->u.isp24.fcp_hdr.s_id);
3586 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3589 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
3590 "qla_target(%d): task mgmt fn 0x%x for "
3591 "non-existant session\n", vha->vp_idx, fn);
3592 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
3593 sizeof(struct atio_from_isp));
3596 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
3599 /* ha->hardware_lock supposed to be held on entry */
3600 static int __qlt_abort_task(struct scsi_qla_host *vha,
3601 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
3603 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3604 struct qla_hw_data *ha = vha->hw;
3605 struct qla_tgt_mgmt_cmd *mcmd;
3606 uint32_t lun, unpacked_lun;
3609 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3611 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
3612 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
3613 vha->vp_idx, __func__);
3616 memset(mcmd, 0, sizeof(*mcmd));
3619 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3620 sizeof(mcmd->orig_iocb.imm_ntfy));
3622 lun = a->u.isp24.fcp_cmnd.lun;
3623 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3624 mcmd->reset_count = vha->hw->chip_reset;
3626 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
3627 le16_to_cpu(iocb->u.isp2x.seq_id));
3629 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
3630 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
3632 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3639 /* ha->hardware_lock supposed to be held on entry */
3640 static int qlt_abort_task(struct scsi_qla_host *vha,
3641 struct imm_ntfy_from_isp *iocb)
3643 struct qla_hw_data *ha = vha->hw;
3644 struct qla_tgt_sess *sess;
3647 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
3649 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
3651 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
3652 "qla_target(%d): task abort for unexisting "
3653 "session\n", vha->vp_idx);
3654 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
3655 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
3658 return __qlt_abort_task(vha, iocb, sess);
3662 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3664 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
3665 struct imm_ntfy_from_isp *iocb)
3669 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
3670 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
3671 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
3673 switch (iocb->u.isp24.status_subcode) {
3679 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3684 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
3685 if (tgt->link_reinit_iocb_pending) {
3686 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3688 tgt->link_reinit_iocb_pending = 0;
3690 res = 1; /* send notify ack */
3695 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
3696 "qla_target(%d): Unsupported ELS command %x "
3697 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
3698 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3705 static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
3709 * FIXME: Reject non zero SRR relative offset until we can test
3710 * this code properly.
3712 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
3715 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
3716 size_t first_offset = 0, rem_offset = offset, tmp = 0;
3717 int i, sg_srr_cnt, bufflen = 0;
3719 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
3720 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
3721 "cmd->sg_cnt: %u, direction: %d\n",
3722 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
3724 if (!cmd->sg || !cmd->sg_cnt) {
3725 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
3726 "Missing cmd->sg or zero cmd->sg_cnt in"
3727 " qla_tgt_set_data_offset\n");
3731 * Walk the current cmd->sg list until we locate the new sg_srr_start
3733 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
3734 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
3735 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
3736 i, sg, sg_page(sg), sg->length, sg->offset);
3738 if ((sg->length + tmp) > offset) {
3739 first_offset = rem_offset;
3741 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
3742 "Found matching sg[%d], using %p as sg_srr_start, "
3743 "and using first_offset: %zu\n", i, sg,
3748 rem_offset -= sg->length;
3751 if (!sg_srr_start) {
3752 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
3753 "Unable to locate sg_srr_start for offset: %u\n", offset);
3756 sg_srr_cnt = (cmd->sg_cnt - i);
3758 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
3760 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
3761 "Unable to allocate sgp\n");
3764 sg_init_table(sg_srr, sg_srr_cnt);
3767 * Walk the remaining list for sg_srr_start, mapping to the newly
3768 * allocated sg_srr taking first_offset into account.
3770 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
3772 sg_set_page(sgp, sg_page(sg),
3773 (sg->length - first_offset), first_offset);
3776 sg_set_page(sgp, sg_page(sg), sg->length, 0);
3778 bufflen += sgp->length;
3786 cmd->sg_cnt = sg_srr_cnt;
3787 cmd->bufflen = bufflen;
3788 cmd->offset += offset;
3791 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
3792 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
3794 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
3796 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
3799 if (cmd->sg_cnt < 0)
3802 if (cmd->bufflen < 0)
3809 static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
3810 uint32_t srr_rel_offs, int *xmit_type)
3812 int res = 0, rel_offs;
3814 rel_offs = srr_rel_offs - cmd->offset;
3815 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
3816 srr_rel_offs, rel_offs);
3818 *xmit_type = QLA_TGT_XMIT_ALL;
3821 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
3822 "qla_target(%d): SRR rel_offs (%d) < 0",
3823 cmd->vha->vp_idx, rel_offs);
3825 } else if (rel_offs == cmd->bufflen)
3826 *xmit_type = QLA_TGT_XMIT_STATUS;
3827 else if (rel_offs > 0)
3828 res = qlt_set_data_offset(cmd, rel_offs);
3833 /* No locks, thread context */
3834 static void qlt_handle_srr(struct scsi_qla_host *vha,
3835 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
3837 struct imm_ntfy_from_isp *ntfy =
3838 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
3839 struct qla_hw_data *ha = vha->hw;
3840 struct qla_tgt_cmd *cmd = sctio->cmd;
3841 struct se_cmd *se_cmd = &cmd->se_cmd;
3842 unsigned long flags;
3843 int xmit_type = 0, resp = 0;
3847 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
3848 srr_ui = ntfy->u.isp24.srr_ui;
3850 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3855 spin_lock_irqsave(&ha->hardware_lock, flags);
3856 qlt_send_notify_ack(vha, ntfy,
3857 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3858 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3859 xmit_type = QLA_TGT_XMIT_STATUS;
3862 case SRR_IU_DATA_IN:
3863 if (!cmd->sg || !cmd->sg_cnt) {
3864 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3865 "Unable to process SRR_IU_DATA_IN due to"
3866 " missing cmd->sg, state: %d\n", cmd->state);
3870 if (se_cmd->scsi_status != 0) {
3871 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3872 "Rejecting SRR_IU_DATA_IN with non GOOD "
3876 cmd->bufflen = se_cmd->data_length;
3878 if (qlt_has_data(cmd)) {
3879 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3881 spin_lock_irqsave(&ha->hardware_lock, flags);
3882 qlt_send_notify_ack(vha, ntfy,
3883 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3884 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3887 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3888 "qla_target(%d): SRR for in data for cmd without them (tag %lld, SCSI status %d), reject",
3889 vha->vp_idx, se_cmd->tag,
3890 cmd->se_cmd.scsi_status);
3894 case SRR_IU_DATA_OUT:
3895 if (!cmd->sg || !cmd->sg_cnt) {
3896 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3897 "Unable to process SRR_IU_DATA_OUT due to"
3898 " missing cmd->sg\n");
3902 if (se_cmd->scsi_status != 0) {
3903 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3904 "Rejecting SRR_IU_DATA_OUT"
3905 " with non GOOD scsi_status\n");
3908 cmd->bufflen = se_cmd->data_length;
3910 if (qlt_has_data(cmd)) {
3911 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3913 spin_lock_irqsave(&ha->hardware_lock, flags);
3914 qlt_send_notify_ack(vha, ntfy,
3915 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3916 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3917 if (xmit_type & QLA_TGT_XMIT_DATA) {
3918 cmd->cmd_flags |= BIT_8;
3919 qlt_rdy_to_xfer(cmd);
3922 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3923 "qla_target(%d): SRR for out data for cmd without them (tag %lld, SCSI status %d), reject",
3924 vha->vp_idx, se_cmd->tag, cmd->se_cmd.scsi_status);
3929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3930 "qla_target(%d): Unknown srr_ui value %x",
3931 vha->vp_idx, srr_ui);
3935 /* Transmit response in case of status and data-in cases */
3937 cmd->cmd_flags |= BIT_7;
3938 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3944 spin_lock_irqsave(&ha->hardware_lock, flags);
3945 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3946 NOTIFY_ACK_SRR_FLAGS_REJECT,
3947 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3948 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3949 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3950 cmd->state = QLA_TGT_STATE_DATA_IN;
3953 cmd->cmd_flags |= BIT_9;
3954 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3956 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3959 static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3960 struct qla_tgt_srr_imm *imm, int ha_locked)
3962 struct qla_hw_data *ha = vha->hw;
3963 unsigned long flags = 0;
3966 spin_lock_irqsave(&ha->hardware_lock, flags);
3968 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3969 NOTIFY_ACK_SRR_FLAGS_REJECT,
3970 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3971 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3974 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3979 static void qlt_handle_srr_work(struct work_struct *work)
3981 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3982 struct scsi_qla_host *vha = tgt->vha;
3983 struct qla_tgt_srr_ctio *sctio;
3984 unsigned long flags;
3986 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3990 spin_lock_irqsave(&tgt->srr_lock, flags);
3991 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3992 struct qla_tgt_srr_imm *imm, *i, *ti;
3993 struct qla_tgt_cmd *cmd;
3994 struct se_cmd *se_cmd;
3997 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3999 if (i->srr_id == sctio->srr_id) {
4000 list_del(&i->srr_list_entry);
4002 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
4003 "qla_target(%d): There must be "
4004 "only one IMM SRR per CTIO SRR "
4005 "(IMM SRR %p, id %d, CTIO %p\n",
4006 vha->vp_idx, i, i->srr_id, sctio);
4007 qlt_reject_free_srr_imm(tgt->vha, i, 0);
4013 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
4014 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
4018 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
4019 "Not found matching IMM for SRR CTIO (id %d)\n",
4023 list_del(&sctio->srr_list_entry);
4025 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4029 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
4030 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
4039 se_cmd = &cmd->se_cmd;
4041 cmd->sg_cnt = se_cmd->t_data_nents;
4042 cmd->sg = se_cmd->t_data_sg;
4044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
4045 "SRR cmd %p (se_cmd %p, tag %lld, op %x), sg_cnt=%d, offset=%d",
4046 cmd, &cmd->se_cmd, se_cmd->tag, se_cmd->t_task_cdb ?
4047 se_cmd->t_task_cdb[0] : 0, cmd->sg_cnt, cmd->offset);
4049 qlt_handle_srr(vha, sctio, imm);
4055 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4058 /* ha->hardware_lock supposed to be held on entry */
4059 static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
4060 struct imm_ntfy_from_isp *iocb)
4062 struct qla_tgt_srr_imm *imm;
4063 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4064 struct qla_tgt_srr_ctio *sctio;
4068 ql_log(ql_log_warn, vha, 0xf02d, "qla_target(%d): SRR received\n",
4071 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
4073 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
4075 /* IRQ is already OFF */
4076 spin_lock(&tgt->srr_lock);
4077 imm->srr_id = tgt->imm_srr_id;
4078 list_add_tail(&imm->srr_list_entry,
4079 &tgt->srr_imm_list);
4080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
4081 "IMM NTFY SRR %p added (id %d, ui %x)\n",
4082 imm, imm->srr_id, iocb->u.isp24.srr_ui);
4083 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
4085 list_for_each_entry(sctio, &tgt->srr_ctio_list,
4087 if (sctio->srr_id == imm->srr_id) {
4093 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
4094 "Scheduling srr work\n");
4095 schedule_work(&tgt->srr_work);
4097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
4098 "qla_target(%d): imm_srr_id "
4099 "== ctio_srr_id (%d), but there is no "
4100 "corresponding SRR CTIO, deleting IMM "
4101 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
4103 list_del(&imm->srr_list_entry);
4107 spin_unlock(&tgt->srr_lock);
4111 spin_unlock(&tgt->srr_lock);
4113 struct qla_tgt_srr_ctio *ts;
4115 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
4116 "qla_target(%d): Unable to allocate SRR IMM "
4117 "entry, SRR request will be rejected\n", vha->vp_idx);
4119 /* IRQ is already OFF */
4120 spin_lock(&tgt->srr_lock);
4121 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
4123 if (sctio->srr_id == tgt->imm_srr_id) {
4124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
4125 "CTIO SRR %p deleted (id %d)\n",
4126 sctio, sctio->srr_id);
4127 list_del(&sctio->srr_list_entry);
4128 qlt_send_term_exchange(vha, sctio->cmd,
4129 &sctio->cmd->atio, 1);
4133 spin_unlock(&tgt->srr_lock);
4140 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
4141 NOTIFY_ACK_SRR_FLAGS_REJECT,
4142 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4143 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4147 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4149 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4150 struct imm_ntfy_from_isp *iocb)
4152 struct qla_hw_data *ha = vha->hw;
4153 uint32_t add_flags = 0;
4154 int send_notify_ack = 1;
4157 status = le16_to_cpu(iocb->u.isp2x.status);
4159 case IMM_NTFY_LIP_RESET:
4161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4162 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4163 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4164 iocb->u.isp24.status_subcode);
4166 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4167 send_notify_ack = 0;
4171 case IMM_NTFY_LIP_LINK_REINIT:
4173 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4174 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4175 "qla_target(%d): LINK REINIT (loop %#x, "
4176 "subcode %x)\n", vha->vp_idx,
4177 le16_to_cpu(iocb->u.isp24.nport_handle),
4178 iocb->u.isp24.status_subcode);
4179 if (tgt->link_reinit_iocb_pending) {
4180 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4183 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4184 tgt->link_reinit_iocb_pending = 1;
4186 * QLogic requires to wait after LINK REINIT for possible
4187 * PDISC or ADISC ELS commands
4189 send_notify_ack = 0;
4193 case IMM_NTFY_PORT_LOGOUT:
4194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4195 "qla_target(%d): Port logout (loop "
4196 "%#x, subcode %x)\n", vha->vp_idx,
4197 le16_to_cpu(iocb->u.isp24.nport_handle),
4198 iocb->u.isp24.status_subcode);
4200 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4201 send_notify_ack = 0;
4202 /* The sessions will be cleared in the callback, if needed */
4205 case IMM_NTFY_GLBL_TPRLO:
4206 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4207 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4208 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4209 send_notify_ack = 0;
4210 /* The sessions will be cleared in the callback, if needed */
4213 case IMM_NTFY_PORT_CONFIG:
4214 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4215 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4217 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4218 send_notify_ack = 0;
4219 /* The sessions will be cleared in the callback, if needed */
4222 case IMM_NTFY_GLBL_LOGO:
4223 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4224 "qla_target(%d): Link failure detected\n",
4226 /* I_T nexus loss */
4227 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4228 send_notify_ack = 0;
4231 case IMM_NTFY_IOCB_OVERFLOW:
4232 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4233 "qla_target(%d): Cannot provide requested "
4234 "capability (IOCB overflowed the immediate notify "
4235 "resource count)\n", vha->vp_idx);
4238 case IMM_NTFY_ABORT_TASK:
4239 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4240 "qla_target(%d): Abort Task (S %08x I %#x -> "
4241 "L %#x)\n", vha->vp_idx,
4242 le16_to_cpu(iocb->u.isp2x.seq_id),
4243 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4244 le16_to_cpu(iocb->u.isp2x.lun));
4245 if (qlt_abort_task(vha, iocb) == 0)
4246 send_notify_ack = 0;
4249 case IMM_NTFY_RESOURCE:
4250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4251 "qla_target(%d): Out of resources, host %ld\n",
4252 vha->vp_idx, vha->host_no);
4255 case IMM_NTFY_MSG_RX:
4256 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4257 "qla_target(%d): Immediate notify task %x\n",
4258 vha->vp_idx, iocb->u.isp2x.task_flags);
4259 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4260 send_notify_ack = 0;
4264 if (qlt_24xx_handle_els(vha, iocb) == 0)
4265 send_notify_ack = 0;
4269 qlt_prepare_srr_imm(vha, iocb);
4270 send_notify_ack = 0;
4274 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4275 "qla_target(%d): Received unknown immediate "
4276 "notify status %x\n", vha->vp_idx, status);
4280 if (send_notify_ack)
4281 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4285 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4286 * This function sends busy to ISP 2xxx or 24xx.
4288 static int __qlt_send_busy(struct scsi_qla_host *vha,
4289 struct atio_from_isp *atio, uint16_t status)
4291 struct ctio7_to_24xx *ctio24;
4292 struct qla_hw_data *ha = vha->hw;
4294 struct qla_tgt_sess *sess = NULL;
4296 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4297 atio->u.isp24.fcp_hdr.s_id);
4299 qlt_send_term_exchange(vha, NULL, atio, 1);
4302 /* Sending marker isn't necessary, since we called from ISR */
4304 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4306 ql_dbg(ql_dbg_io, vha, 0x3063,
4307 "qla_target(%d): %s failed: unable to allocate "
4308 "request packet", vha->vp_idx, __func__);
4312 pkt->entry_count = 1;
4313 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
4315 ctio24 = (struct ctio7_to_24xx *)pkt;
4316 ctio24->entry_type = CTIO_TYPE7;
4317 ctio24->nport_handle = sess->loop_id;
4318 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
4319 ctio24->vp_index = vha->vp_idx;
4320 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
4321 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
4322 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
4323 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
4324 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
4325 __constant_cpu_to_le16(
4326 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
4327 CTIO7_FLAGS_DONT_RET_CTIO);
4329 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
4330 * if the explicit conformation is used.
4332 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
4333 ctio24->u.status1.scsi_status = cpu_to_le16(status);
4334 /* Memory Barrier */
4336 qla2x00_start_iocbs(vha, vha->req);
4341 * This routine is used to allocate a command for either a QFull condition
4342 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
4346 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
4347 struct atio_from_isp *atio, uint16_t status, int qfull)
4349 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4350 struct qla_hw_data *ha = vha->hw;
4351 struct qla_tgt_sess *sess;
4352 struct se_session *se_sess;
4353 struct qla_tgt_cmd *cmd;
4356 if (unlikely(tgt->tgt_stop)) {
4357 ql_dbg(ql_dbg_io, vha, 0x300a,
4358 "New command while device %p is shutting down\n", tgt);
4362 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
4363 vha->hw->tgt.num_qfull_cmds_dropped++;
4364 if (vha->hw->tgt.num_qfull_cmds_dropped >
4365 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
4366 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
4367 vha->hw->tgt.num_qfull_cmds_dropped;
4369 ql_dbg(ql_dbg_io, vha, 0x3068,
4370 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
4371 vha->vp_idx, __func__,
4372 vha->hw->tgt.num_qfull_cmds_dropped);
4374 qlt_chk_exch_leak_thresh_hold(vha);
4378 sess = ha->tgt.tgt_ops->find_sess_by_s_id
4379 (vha, atio->u.isp24.fcp_hdr.s_id);
4383 se_sess = sess->se_sess;
4385 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4389 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4391 ql_dbg(ql_dbg_io, vha, 0x3009,
4392 "qla_target(%d): %s: Allocation of cmd failed\n",
4393 vha->vp_idx, __func__);
4395 vha->hw->tgt.num_qfull_cmds_dropped++;
4396 if (vha->hw->tgt.num_qfull_cmds_dropped >
4397 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
4398 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
4399 vha->hw->tgt.num_qfull_cmds_dropped;
4401 qlt_chk_exch_leak_thresh_hold(vha);
4405 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4407 qlt_incr_num_pend_cmds(vha);
4408 INIT_LIST_HEAD(&cmd->cmd_list);
4409 memcpy(&cmd->atio, atio, sizeof(*atio));
4411 cmd->tgt = vha->vha_tgt.qla_tgt;
4413 cmd->reset_count = vha->hw->chip_reset;
4418 /* NOTE: borrowing the state field to carry the status */
4419 cmd->state = status;
4421 cmd->term_exchg = 1;
4423 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
4425 vha->hw->tgt.num_qfull_cmds_alloc++;
4426 if (vha->hw->tgt.num_qfull_cmds_alloc >
4427 vha->hw->qla_stats.stat_max_qfull_cmds_alloc)
4428 vha->hw->qla_stats.stat_max_qfull_cmds_alloc =
4429 vha->hw->tgt.num_qfull_cmds_alloc;
4433 qlt_free_qfull_cmds(struct scsi_qla_host *vha)
4435 struct qla_hw_data *ha = vha->hw;
4436 unsigned long flags;
4437 struct qla_tgt_cmd *cmd, *tcmd;
4438 struct list_head free_list;
4441 if (list_empty(&ha->tgt.q_full_list))
4444 INIT_LIST_HEAD(&free_list);
4446 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
4448 if (list_empty(&ha->tgt.q_full_list)) {
4449 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
4453 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
4455 /* cmd->state is a borrowed field to hold status */
4456 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
4457 else if (cmd->term_exchg)
4458 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
4464 ql_dbg(ql_dbg_io, vha, 0x3006,
4465 "%s: busy sent for ox_id[%04x]\n", __func__,
4466 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
4467 else if (cmd->term_exchg)
4468 ql_dbg(ql_dbg_io, vha, 0x3007,
4469 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
4470 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
4472 ql_dbg(ql_dbg_io, vha, 0x3008,
4473 "%s: Unexpected cmd in QFull list %p\n", __func__,
4476 list_del(&cmd->cmd_list);
4477 list_add_tail(&cmd->cmd_list, &free_list);
4479 /* piggy back on hardware_lock for protection */
4480 vha->hw->tgt.num_qfull_cmds_alloc--;
4482 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
4486 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
4487 list_del(&cmd->cmd_list);
4488 /* This cmd was never sent to TCM. There is no need
4489 * to schedule free or call free_cmd
4497 qlt_send_busy(struct scsi_qla_host *vha,
4498 struct atio_from_isp *atio, uint16_t status)
4502 rc = __qlt_send_busy(vha, atio, status);
4504 qlt_alloc_qfull_cmd(vha, atio, status, 1);
4508 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
4509 struct atio_from_isp *atio)
4511 struct qla_hw_data *ha = vha->hw;
4514 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
4517 status = temp_sam_status;
4518 qlt_send_busy(vha, atio, status);
4522 /* ha->hardware_lock supposed to be held on entry */
4523 /* called via callback from qla2xxx */
4524 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
4525 struct atio_from_isp *atio)
4527 struct qla_hw_data *ha = vha->hw;
4528 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4531 if (unlikely(tgt == NULL)) {
4532 ql_dbg(ql_dbg_io, vha, 0x3064,
4533 "ATIO pkt, but no tgt (ha %p)", ha);
4537 * In tgt_stop mode we also should allow all requests to pass.
4538 * Otherwise, some commands can stuck.
4541 tgt->irq_cmd_count++;
4543 switch (atio->u.raw.entry_type) {
4545 if (unlikely(atio->u.isp24.exchange_addr ==
4546 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
4547 ql_dbg(ql_dbg_io, vha, 0x3065,
4548 "qla_target(%d): ATIO_TYPE7 "
4549 "received with UNKNOWN exchange address, "
4550 "sending QUEUE_FULL\n", vha->vp_idx);
4551 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
4557 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
4558 rc = qlt_chk_qfull_thresh_hold(vha, atio);
4560 tgt->irq_cmd_count--;
4563 rc = qlt_handle_cmd_for_atio(vha, atio);
4565 rc = qlt_handle_task_mgmt(vha, atio);
4567 if (unlikely(rc != 0)) {
4569 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4570 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4572 qlt_send_term_exchange(vha, NULL, atio, 1);
4575 if (tgt->tgt_stop) {
4576 ql_dbg(ql_dbg_tgt, vha, 0xe059,
4577 "qla_target: Unable to send "
4578 "command to target for req, "
4581 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
4582 "qla_target(%d): Unable to send "
4583 "command to target, sending BUSY "
4584 "status.\n", vha->vp_idx);
4585 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4591 case IMMED_NOTIFY_TYPE:
4593 if (unlikely(atio->u.isp2x.entry_status != 0)) {
4594 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
4595 "qla_target(%d): Received ATIO packet %x "
4596 "with error status %x\n", vha->vp_idx,
4597 atio->u.raw.entry_type,
4598 atio->u.isp2x.entry_status);
4601 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
4602 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
4607 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
4608 "qla_target(%d): Received unknown ATIO atio "
4609 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
4613 tgt->irq_cmd_count--;
4616 /* ha->hardware_lock supposed to be held on entry */
4617 /* called via callback from qla2xxx */
4618 static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
4620 struct qla_hw_data *ha = vha->hw;
4621 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4623 if (unlikely(tgt == NULL)) {
4624 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
4625 "qla_target(%d): Response pkt %x received, but no "
4626 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
4631 * In tgt_stop mode we also should allow all requests to pass.
4632 * Otherwise, some commands can stuck.
4635 tgt->irq_cmd_count++;
4637 switch (pkt->entry_type) {
4641 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
4642 qlt_do_ctio_completion(vha, entry->handle,
4643 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4648 case ACCEPT_TGT_IO_TYPE:
4650 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
4652 if (atio->u.isp2x.status !=
4653 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
4654 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
4655 "qla_target(%d): ATIO with error "
4656 "status %x received\n", vha->vp_idx,
4657 le16_to_cpu(atio->u.isp2x.status));
4661 rc = qlt_chk_qfull_thresh_hold(vha, atio);
4663 tgt->irq_cmd_count--;
4667 rc = qlt_handle_cmd_for_atio(vha, atio);
4668 if (unlikely(rc != 0)) {
4670 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4671 qlt_send_busy(vha, atio, 0);
4673 qlt_send_term_exchange(vha, NULL, atio, 1);
4676 if (tgt->tgt_stop) {
4677 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
4678 "qla_target: Unable to send "
4679 "command to target, sending TERM "
4680 "EXCHANGE for rsp\n");
4681 qlt_send_term_exchange(vha, NULL,
4684 ql_dbg(ql_dbg_tgt, vha, 0xe060,
4685 "qla_target(%d): Unable to send "
4686 "command to target, sending BUSY "
4687 "status\n", vha->vp_idx);
4688 qlt_send_busy(vha, atio, 0);
4695 case CONTINUE_TGT_IO_TYPE:
4697 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4698 qlt_do_ctio_completion(vha, entry->handle,
4699 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4706 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4707 qlt_do_ctio_completion(vha, entry->handle,
4708 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4713 case IMMED_NOTIFY_TYPE:
4714 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
4715 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
4718 case NOTIFY_ACK_TYPE:
4719 if (tgt->notify_ack_expected > 0) {
4720 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
4721 ql_dbg(ql_dbg_tgt, vha, 0xe036,
4722 "NOTIFY_ACK seq %08x status %x\n",
4723 le16_to_cpu(entry->u.isp2x.seq_id),
4724 le16_to_cpu(entry->u.isp2x.status));
4725 tgt->notify_ack_expected--;
4726 if (entry->u.isp2x.status !=
4727 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
4728 ql_dbg(ql_dbg_tgt, vha, 0xe061,
4729 "qla_target(%d): NOTIFY_ACK "
4730 "failed %x\n", vha->vp_idx,
4731 le16_to_cpu(entry->u.isp2x.status));
4734 ql_dbg(ql_dbg_tgt, vha, 0xe062,
4735 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
4740 case ABTS_RECV_24XX:
4741 ql_dbg(ql_dbg_tgt, vha, 0xe037,
4742 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
4743 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
4746 case ABTS_RESP_24XX:
4747 if (tgt->abts_resp_expected > 0) {
4748 struct abts_resp_from_24xx_fw *entry =
4749 (struct abts_resp_from_24xx_fw *)pkt;
4750 ql_dbg(ql_dbg_tgt, vha, 0xe038,
4751 "ABTS_RESP_24XX: compl_status %x\n",
4752 entry->compl_status);
4753 tgt->abts_resp_expected--;
4754 if (le16_to_cpu(entry->compl_status) !=
4755 ABTS_RESP_COMPL_SUCCESS) {
4756 if ((entry->error_subcode1 == 0x1E) &&
4757 (entry->error_subcode2 == 0)) {
4759 * We've got a race here: aborted
4760 * exchange not terminated, i.e.
4761 * response for the aborted command was
4762 * sent between the abort request was
4763 * received and processed.
4764 * Unfortunately, the firmware has a
4765 * silly requirement that all aborted
4766 * exchanges must be explicitely
4767 * terminated, otherwise it refuses to
4768 * send responses for the abort
4769 * requests. So, we have to
4770 * (re)terminate the exchange and retry
4771 * the abort response.
4773 qlt_24xx_retry_term_exchange(vha,
4776 ql_dbg(ql_dbg_tgt, vha, 0xe063,
4777 "qla_target(%d): ABTS_RESP_24XX "
4778 "failed %x (subcode %x:%x)",
4779 vha->vp_idx, entry->compl_status,
4780 entry->error_subcode1,
4781 entry->error_subcode2);
4784 ql_dbg(ql_dbg_tgt, vha, 0xe064,
4785 "qla_target(%d): Unexpected ABTS_RESP_24XX "
4786 "received\n", vha->vp_idx);
4791 ql_dbg(ql_dbg_tgt, vha, 0xe065,
4792 "qla_target(%d): Received unknown response pkt "
4793 "type %x\n", vha->vp_idx, pkt->entry_type);
4797 tgt->irq_cmd_count--;
4801 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4803 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
4806 struct qla_hw_data *ha = vha->hw;
4807 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4810 if (!ha->tgt.tgt_ops)
4813 if (unlikely(tgt == NULL)) {
4814 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
4815 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
4819 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
4823 * In tgt_stop mode we also should allow all requests to pass.
4824 * Otherwise, some commands can stuck.
4827 tgt->irq_cmd_count++;
4830 case MBA_RESET: /* Reset */
4831 case MBA_SYSTEM_ERR: /* System Error */
4832 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
4833 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
4834 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
4835 "qla_target(%d): System error async event %#x "
4836 "occurred", vha->vp_idx, code);
4838 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
4839 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4844 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
4845 "qla_target(%d): Async LOOP_UP occurred "
4846 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4847 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4848 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
4849 if (tgt->link_reinit_iocb_pending) {
4850 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
4852 tgt->link_reinit_iocb_pending = 0;
4857 case MBA_LIP_OCCURRED:
4860 case MBA_RSCN_UPDATE:
4861 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
4862 "qla_target(%d): Async event %#x occurred "
4863 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4864 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4865 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
4868 case MBA_PORT_UPDATE:
4869 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
4870 "qla_target(%d): Port update async event %#x "
4871 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4872 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4873 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4874 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
4876 login_code = le16_to_cpu(mailbox[2]);
4877 if (login_code == 0x4)
4878 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
4879 "Async MB 2: Got PLOGI Complete\n");
4880 else if (login_code == 0x7)
4881 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
4882 "Async MB 2: Port Logged Out\n");
4889 tgt->irq_cmd_count--;
4892 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
4898 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
4900 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
4901 "qla_target(%d): Allocation of tmp FC port failed",
4906 fcport->loop_id = loop_id;
4908 rc = qla2x00_get_port_database(vha, fcport, 0);
4909 if (rc != QLA_SUCCESS) {
4910 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
4911 "qla_target(%d): Failed to retrieve fcport "
4912 "information -- get_port_database() returned %x "
4913 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
4921 /* Must be called under tgt_mutex */
4922 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
4925 struct qla_tgt_sess *sess = NULL;
4926 fc_port_t *fcport = NULL;
4927 int rc, global_resets;
4928 uint16_t loop_id = 0;
4932 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
4934 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
4936 if ((s_id[0] == 0xFF) &&
4937 (s_id[1] == 0xFC)) {
4939 * This is Domain Controller, so it should be
4940 * OK to drop SCSI commands from it.
4942 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
4943 "Unable to find initiator with S_ID %x:%x:%x",
4944 s_id[0], s_id[1], s_id[2]);
4946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
4947 "qla_target(%d): Unable to find "
4948 "initiator with S_ID %x:%x:%x",
4949 vha->vp_idx, s_id[0], s_id[1],
4954 fcport = qlt_get_port_database(vha, loop_id);
4958 if (global_resets !=
4959 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
4960 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
4961 "qla_target(%d): global reset during session discovery "
4962 "(counter was %d, new %d), retrying", vha->vp_idx,
4964 atomic_read(&vha->vha_tgt.
4965 qla_tgt->tgt_global_resets_count));
4969 sess = qlt_create_sess(vha, fcport, true);
4975 static void qlt_abort_work(struct qla_tgt *tgt,
4976 struct qla_tgt_sess_work_param *prm)
4978 struct scsi_qla_host *vha = tgt->vha;
4979 struct qla_hw_data *ha = vha->hw;
4980 struct qla_tgt_sess *sess = NULL;
4981 unsigned long flags;
4986 spin_lock_irqsave(&ha->hardware_lock, flags);
4991 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
4992 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
4993 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
4995 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4996 (unsigned char *)&be_s_id);
4998 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5000 mutex_lock(&vha->vha_tgt.tgt_mutex);
5001 sess = qlt_make_local_sess(vha, s_id);
5002 /* sess has got an extra creation ref */
5003 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5005 spin_lock_irqsave(&ha->hardware_lock, flags);
5009 kref_get(&sess->se_sess->sess_kref);
5015 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
5019 ha->tgt.tgt_ops->put_sess(sess);
5020 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5024 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
5026 ha->tgt.tgt_ops->put_sess(sess);
5027 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5030 static void qlt_tmr_work(struct qla_tgt *tgt,
5031 struct qla_tgt_sess_work_param *prm)
5033 struct atio_from_isp *a = &prm->tm_iocb2;
5034 struct scsi_qla_host *vha = tgt->vha;
5035 struct qla_hw_data *ha = vha->hw;
5036 struct qla_tgt_sess *sess = NULL;
5037 unsigned long flags;
5038 uint8_t *s_id = NULL; /* to hide compiler warnings */
5040 uint32_t lun, unpacked_lun;
5044 spin_lock_irqsave(&ha->hardware_lock, flags);
5049 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5050 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5052 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5054 mutex_lock(&vha->vha_tgt.tgt_mutex);
5055 sess = qlt_make_local_sess(vha, s_id);
5056 /* sess has got an extra creation ref */
5057 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5059 spin_lock_irqsave(&ha->hardware_lock, flags);
5063 kref_get(&sess->se_sess->sess_kref);
5067 lun = a->u.isp24.fcp_cmnd.lun;
5068 lun_size = sizeof(lun);
5069 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
5070 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
5072 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5076 ha->tgt.tgt_ops->put_sess(sess);
5077 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5081 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
5083 ha->tgt.tgt_ops->put_sess(sess);
5084 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5087 static void qlt_sess_work_fn(struct work_struct *work)
5089 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
5090 struct scsi_qla_host *vha = tgt->vha;
5091 unsigned long flags;
5093 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
5095 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5096 while (!list_empty(&tgt->sess_works_list)) {
5097 struct qla_tgt_sess_work_param *prm = list_entry(
5098 tgt->sess_works_list.next, typeof(*prm),
5099 sess_works_list_entry);
5102 * This work can be scheduled on several CPUs at time, so we
5103 * must delete the entry to eliminate double processing
5105 list_del(&prm->sess_works_list_entry);
5107 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5109 switch (prm->type) {
5110 case QLA_TGT_SESS_WORK_ABORT:
5111 qlt_abort_work(tgt, prm);
5113 case QLA_TGT_SESS_WORK_TM:
5114 qlt_tmr_work(tgt, prm);
5121 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5125 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5128 /* Must be called under tgt_host_action_mutex */
5129 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
5131 struct qla_tgt *tgt;
5133 if (!QLA_TGT_MODE_ENABLED())
5136 if (!IS_TGT_MODE_CAPABLE(ha)) {
5137 ql_log(ql_log_warn, base_vha, 0xe070,
5138 "This adapter does not support target mode.\n");
5142 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
5143 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
5145 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
5147 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
5149 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
5150 "Unable to allocate struct qla_tgt\n");
5154 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
5155 base_vha->host->hostt->supported_mode |= MODE_TARGET;
5158 tgt->vha = base_vha;
5159 init_waitqueue_head(&tgt->waitQ);
5160 INIT_LIST_HEAD(&tgt->sess_list);
5161 INIT_LIST_HEAD(&tgt->del_sess_list);
5162 INIT_DELAYED_WORK(&tgt->sess_del_work,
5163 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
5164 spin_lock_init(&tgt->sess_work_lock);
5165 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
5166 INIT_LIST_HEAD(&tgt->sess_works_list);
5167 spin_lock_init(&tgt->srr_lock);
5168 INIT_LIST_HEAD(&tgt->srr_ctio_list);
5169 INIT_LIST_HEAD(&tgt->srr_imm_list);
5170 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
5171 atomic_set(&tgt->tgt_global_resets_count, 0);
5173 base_vha->vha_tgt.qla_tgt = tgt;
5175 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
5176 "qla_target(%d): using 64 Bit PCI addressing",
5178 tgt->tgt_enable_64bit_addr = 1;
5180 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
5181 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
5182 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
5184 if (base_vha->fc_vport)
5187 mutex_lock(&qla_tgt_mutex);
5188 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
5189 mutex_unlock(&qla_tgt_mutex);
5194 /* Must be called under tgt_host_action_mutex */
5195 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
5197 if (!vha->vha_tgt.qla_tgt)
5200 if (vha->fc_vport) {
5201 qlt_release(vha->vha_tgt.qla_tgt);
5205 /* free left over qfull cmds */
5206 qlt_init_term_exchange(vha);
5208 mutex_lock(&qla_tgt_mutex);
5209 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
5210 mutex_unlock(&qla_tgt_mutex);
5212 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
5214 qlt_release(vha->vha_tgt.qla_tgt);
5219 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
5224 pr_debug("qla2xxx HW vha->node_name: ");
5225 for (i = 0; i < WWN_SIZE; i++)
5226 pr_debug("%02x ", vha->node_name[i]);
5228 pr_debug("qla2xxx HW vha->port_name: ");
5229 for (i = 0; i < WWN_SIZE; i++)
5230 pr_debug("%02x ", vha->port_name[i]);
5233 pr_debug("qla2xxx passed configfs WWPN: ");
5234 put_unaligned_be64(wwpn, b);
5235 for (i = 0; i < WWN_SIZE; i++)
5236 pr_debug("%02x ", b[i]);
5241 * qla_tgt_lport_register - register lport with external module
5243 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
5244 * @wwpn: Passwd FC target WWPN
5245 * @callback: lport initialization callback for tcm_qla2xxx code
5246 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
5248 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
5249 u64 npiv_wwpn, u64 npiv_wwnn,
5250 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
5252 struct qla_tgt *tgt;
5253 struct scsi_qla_host *vha;
5254 struct qla_hw_data *ha;
5255 struct Scsi_Host *host;
5256 unsigned long flags;
5260 mutex_lock(&qla_tgt_mutex);
5261 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
5269 if (!(host->hostt->supported_mode & MODE_TARGET))
5272 spin_lock_irqsave(&ha->hardware_lock, flags);
5273 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
5274 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
5276 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5279 if (tgt->tgt_stop) {
5280 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
5282 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5285 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5287 if (!scsi_host_get(host)) {
5288 ql_dbg(ql_dbg_tgt, vha, 0xe068,
5289 "Unable to scsi_host_get() for"
5290 " qla2xxx scsi_host\n");
5293 qlt_lport_dump(vha, phys_wwpn, b);
5295 if (memcmp(vha->port_name, b, WWN_SIZE)) {
5296 scsi_host_put(host);
5299 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
5301 scsi_host_put(host);
5303 mutex_unlock(&qla_tgt_mutex);
5306 mutex_unlock(&qla_tgt_mutex);
5310 EXPORT_SYMBOL(qlt_lport_register);
5313 * qla_tgt_lport_deregister - Degister lport
5315 * @vha: Registered scsi_qla_host pointer
5317 void qlt_lport_deregister(struct scsi_qla_host *vha)
5319 struct qla_hw_data *ha = vha->hw;
5320 struct Scsi_Host *sh = vha->host;
5322 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
5324 vha->vha_tgt.target_lport_ptr = NULL;
5325 ha->tgt.tgt_ops = NULL;
5327 * Release the Scsi_Host reference for the underlying qla2xxx host
5331 EXPORT_SYMBOL(qlt_lport_deregister);
5333 /* Must be called under HW lock */
5334 static void qlt_set_mode(struct scsi_qla_host *vha)
5336 struct qla_hw_data *ha = vha->hw;
5338 switch (ql2x_ini_mode) {
5339 case QLA2XXX_INI_MODE_DISABLED:
5340 case QLA2XXX_INI_MODE_EXCLUSIVE:
5341 vha->host->active_mode = MODE_TARGET;
5343 case QLA2XXX_INI_MODE_ENABLED:
5344 vha->host->active_mode |= MODE_TARGET;
5350 if (ha->tgt.ini_mode_force_reverse)
5351 qla_reverse_ini_mode(vha);
5354 /* Must be called under HW lock */
5355 static void qlt_clear_mode(struct scsi_qla_host *vha)
5357 struct qla_hw_data *ha = vha->hw;
5359 switch (ql2x_ini_mode) {
5360 case QLA2XXX_INI_MODE_DISABLED:
5361 vha->host->active_mode = MODE_UNKNOWN;
5363 case QLA2XXX_INI_MODE_EXCLUSIVE:
5364 vha->host->active_mode = MODE_INITIATOR;
5366 case QLA2XXX_INI_MODE_ENABLED:
5367 vha->host->active_mode &= ~MODE_TARGET;
5373 if (ha->tgt.ini_mode_force_reverse)
5374 qla_reverse_ini_mode(vha);
5378 * qla_tgt_enable_vha - NO LOCK HELD
5380 * host_reset, bring up w/ Target Mode Enabled
5383 qlt_enable_vha(struct scsi_qla_host *vha)
5385 struct qla_hw_data *ha = vha->hw;
5386 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5387 unsigned long flags;
5388 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
5391 ql_dbg(ql_dbg_tgt, vha, 0xe069,
5392 "Unable to locate qla_tgt pointer from"
5393 " struct qla_hw_data\n");
5398 spin_lock_irqsave(&ha->hardware_lock, flags);
5399 tgt->tgt_stopped = 0;
5401 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5404 qla24xx_disable_vp(vha);
5405 qla24xx_enable_vp(vha);
5407 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
5408 qla2xxx_wake_dpc(base_vha);
5409 qla2x00_wait_for_hba_online(base_vha);
5412 EXPORT_SYMBOL(qlt_enable_vha);
5415 * qla_tgt_disable_vha - NO LOCK HELD
5417 * Disable Target Mode and reset the adapter
5419 static void qlt_disable_vha(struct scsi_qla_host *vha)
5421 struct qla_hw_data *ha = vha->hw;
5422 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5423 unsigned long flags;
5426 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
5427 "Unable to locate qla_tgt pointer from"
5428 " struct qla_hw_data\n");
5433 spin_lock_irqsave(&ha->hardware_lock, flags);
5434 qlt_clear_mode(vha);
5435 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5437 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5438 qla2xxx_wake_dpc(vha);
5439 qla2x00_wait_for_hba_online(vha);
5443 * Called from qla_init.c:qla24xx_vport_create() contex to setup
5444 * the target mode specific struct scsi_qla_host and struct qla_hw_data
5448 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
5450 if (!qla_tgt_mode_enabled(vha))
5453 vha->vha_tgt.qla_tgt = NULL;
5455 mutex_init(&vha->vha_tgt.tgt_mutex);
5456 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
5458 qlt_clear_mode(vha);
5461 * NOTE: Currently the value is kept the same for <24xx and
5462 * >=24xx ISPs. If it is necessary to change it,
5463 * the check should be added for specific ISPs,
5464 * assigning the value appropriately.
5466 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
5468 qlt_add_target(ha, vha);
5472 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
5475 * FC-4 Feature bit 0 indicates target functionality to the name server.
5477 if (qla_tgt_mode_enabled(vha)) {
5478 if (qla_ini_mode_enabled(vha))
5479 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
5481 ct_req->req.rff_id.fc4_feature = BIT_0;
5482 } else if (qla_ini_mode_enabled(vha)) {
5483 ct_req->req.rff_id.fc4_feature = BIT_1;
5488 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
5491 * Beginning of ATIO ring has initialization control block already built
5492 * by nvram config routine.
5494 * Returns 0 on success.
5497 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
5499 struct qla_hw_data *ha = vha->hw;
5501 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
5503 if (!qla_tgt_mode_enabled(vha))
5506 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
5507 pkt->u.raw.signature = ATIO_PROCESSED;
5514 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
5515 * @ha: SCSI driver HA context
5518 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
5520 struct qla_hw_data *ha = vha->hw;
5521 struct atio_from_isp *pkt;
5524 if (!vha->flags.online)
5527 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
5528 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5529 cnt = pkt->u.raw.entry_count;
5531 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
5533 for (i = 0; i < cnt; i++) {
5534 ha->tgt.atio_ring_index++;
5535 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
5536 ha->tgt.atio_ring_index = 0;
5537 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
5539 ha->tgt.atio_ring_ptr++;
5541 pkt->u.raw.signature = ATIO_PROCESSED;
5542 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5547 /* Adjust ring index */
5548 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
5549 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
5553 qlt_24xx_config_rings(struct scsi_qla_host *vha)
5555 struct qla_hw_data *ha = vha->hw;
5556 if (!QLA_TGT_MODE_ENABLED())
5559 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
5560 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
5561 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
5563 if (IS_ATIO_MSIX_CAPABLE(ha)) {
5564 struct qla_msix_entry *msix = &ha->msix_entries[2];
5565 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
5567 icb->msix_atio = cpu_to_le16(msix->entry);
5568 ql_dbg(ql_dbg_init, vha, 0xf072,
5569 "Registering ICB vector 0x%x for atio que.\n",
5575 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
5577 struct qla_hw_data *ha = vha->hw;
5579 if (qla_tgt_mode_enabled(vha)) {
5580 if (!ha->tgt.saved_set) {
5581 /* We save only once */
5582 ha->tgt.saved_exchange_count = nv->exchange_count;
5583 ha->tgt.saved_firmware_options_1 =
5584 nv->firmware_options_1;
5585 ha->tgt.saved_firmware_options_2 =
5586 nv->firmware_options_2;
5587 ha->tgt.saved_firmware_options_3 =
5588 nv->firmware_options_3;
5589 ha->tgt.saved_set = 1;
5592 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5594 /* Enable target mode */
5595 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5597 /* Disable ini mode, if requested */
5598 if (!qla_ini_mode_enabled(vha))
5599 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
5601 /* Disable Full Login after LIP */
5602 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5603 /* Enable initial LIP */
5604 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5605 if (ql2xtgt_tape_enable)
5606 /* Enable FC Tape support */
5607 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
5609 /* Disable FC Tape support */
5610 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
5612 /* Disable Full Login after LIP */
5613 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5614 /* Enable target PRLI control */
5615 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5617 if (ha->tgt.saved_set) {
5618 nv->exchange_count = ha->tgt.saved_exchange_count;
5619 nv->firmware_options_1 =
5620 ha->tgt.saved_firmware_options_1;
5621 nv->firmware_options_2 =
5622 ha->tgt.saved_firmware_options_2;
5623 nv->firmware_options_3 =
5624 ha->tgt.saved_firmware_options_3;
5629 /* out-of-order frames reassembly */
5630 nv->firmware_options_3 |= BIT_6|BIT_9;
5632 if (ha->tgt.enable_class_2) {
5633 if (vha->flags.init_done)
5634 fc_host_supported_classes(vha->host) =
5635 FC_COS_CLASS2 | FC_COS_CLASS3;
5637 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5639 if (vha->flags.init_done)
5640 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5642 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5647 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
5648 struct init_cb_24xx *icb)
5650 struct qla_hw_data *ha = vha->hw;
5652 if (ha->tgt.node_name_set) {
5653 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5654 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5659 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
5661 struct qla_hw_data *ha = vha->hw;
5663 if (!QLA_TGT_MODE_ENABLED())
5666 if (qla_tgt_mode_enabled(vha)) {
5667 if (!ha->tgt.saved_set) {
5668 /* We save only once */
5669 ha->tgt.saved_exchange_count = nv->exchange_count;
5670 ha->tgt.saved_firmware_options_1 =
5671 nv->firmware_options_1;
5672 ha->tgt.saved_firmware_options_2 =
5673 nv->firmware_options_2;
5674 ha->tgt.saved_firmware_options_3 =
5675 nv->firmware_options_3;
5676 ha->tgt.saved_set = 1;
5679 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5681 /* Enable target mode */
5682 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5684 /* Disable ini mode, if requested */
5685 if (!qla_ini_mode_enabled(vha))
5686 nv->firmware_options_1 |=
5687 __constant_cpu_to_le32(BIT_5);
5689 /* Disable Full Login after LIP */
5690 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5691 /* Enable initial LIP */
5692 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5693 if (ql2xtgt_tape_enable)
5694 /* Enable FC tape support */
5695 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
5697 /* Disable FC tape support */
5698 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
5700 /* Disable Full Login after LIP */
5701 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5702 /* Enable target PRLI control */
5703 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5705 if (ha->tgt.saved_set) {
5706 nv->exchange_count = ha->tgt.saved_exchange_count;
5707 nv->firmware_options_1 =
5708 ha->tgt.saved_firmware_options_1;
5709 nv->firmware_options_2 =
5710 ha->tgt.saved_firmware_options_2;
5711 nv->firmware_options_3 =
5712 ha->tgt.saved_firmware_options_3;
5717 /* out-of-order frames reassembly */
5718 nv->firmware_options_3 |= BIT_6|BIT_9;
5720 if (ha->tgt.enable_class_2) {
5721 if (vha->flags.init_done)
5722 fc_host_supported_classes(vha->host) =
5723 FC_COS_CLASS2 | FC_COS_CLASS3;
5725 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5727 if (vha->flags.init_done)
5728 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5730 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5735 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
5736 struct init_cb_81xx *icb)
5738 struct qla_hw_data *ha = vha->hw;
5740 if (!QLA_TGT_MODE_ENABLED())
5743 if (ha->tgt.node_name_set) {
5744 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5745 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5750 qlt_83xx_iospace_config(struct qla_hw_data *ha)
5752 if (!QLA_TGT_MODE_ENABLED())
5755 ha->msix_count += 1; /* For ATIO Q */
5759 qlt_24xx_process_response_error(struct scsi_qla_host *vha,
5760 struct sts_entry_24xx *pkt)
5762 switch (pkt->entry_type) {
5763 case ABTS_RECV_24XX:
5764 case ABTS_RESP_24XX:
5766 case NOTIFY_ACK_TYPE:
5775 qlt_modify_vp_config(struct scsi_qla_host *vha,
5776 struct vp_config_entry_24xx *vpmod)
5778 if (qla_tgt_mode_enabled(vha))
5779 vpmod->options_idx1 &= ~BIT_5;
5780 /* Disable ini mode, if requested */
5781 if (!qla_ini_mode_enabled(vha))
5782 vpmod->options_idx1 &= ~BIT_4;
5786 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
5788 if (!QLA_TGT_MODE_ENABLED())
5791 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
5792 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
5793 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
5795 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
5796 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
5799 mutex_init(&base_vha->vha_tgt.tgt_mutex);
5800 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
5801 qlt_clear_mode(base_vha);
5805 qla83xx_msix_atio_q(int irq, void *dev_id)
5807 struct rsp_que *rsp;
5808 scsi_qla_host_t *vha;
5809 struct qla_hw_data *ha;
5810 unsigned long flags;
5812 rsp = (struct rsp_que *) dev_id;
5814 vha = pci_get_drvdata(ha->pdev);
5816 spin_lock_irqsave(&ha->hardware_lock, flags);
5818 qlt_24xx_process_atio_queue(vha);
5819 qla24xx_process_response_queue(vha, rsp);
5821 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5827 qlt_mem_alloc(struct qla_hw_data *ha)
5829 if (!QLA_TGT_MODE_ENABLED())
5832 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
5833 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
5834 if (!ha->tgt.tgt_vp_map)
5837 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
5838 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
5839 &ha->tgt.atio_dma, GFP_KERNEL);
5840 if (!ha->tgt.atio_ring) {
5841 kfree(ha->tgt.tgt_vp_map);
5848 qlt_mem_free(struct qla_hw_data *ha)
5850 if (!QLA_TGT_MODE_ENABLED())
5853 if (ha->tgt.atio_ring) {
5854 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
5855 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
5858 kfree(ha->tgt.tgt_vp_map);
5861 /* vport_slock to be held by the caller */
5863 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
5865 if (!QLA_TGT_MODE_ENABLED())
5870 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
5873 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
5876 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
5879 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
5884 static int __init qlt_parse_ini_mode(void)
5886 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
5887 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
5888 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
5889 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
5890 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
5891 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
5898 int __init qlt_init(void)
5902 if (!qlt_parse_ini_mode()) {
5903 ql_log(ql_log_fatal, NULL, 0xe06b,
5904 "qlt_parse_ini_mode() failed\n");
5908 if (!QLA_TGT_MODE_ENABLED())
5911 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
5912 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
5913 qla_tgt_mgmt_cmd), 0, NULL);
5914 if (!qla_tgt_mgmt_cmd_cachep) {
5915 ql_log(ql_log_fatal, NULL, 0xe06d,
5916 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
5920 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
5921 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
5922 if (!qla_tgt_mgmt_cmd_mempool) {
5923 ql_log(ql_log_fatal, NULL, 0xe06e,
5924 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
5926 goto out_mgmt_cmd_cachep;
5929 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
5931 ql_log(ql_log_fatal, NULL, 0xe06f,
5932 "alloc_workqueue for qla_tgt_wq failed\n");
5934 goto out_cmd_mempool;
5937 * Return 1 to signal that initiator-mode is being disabled
5939 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
5942 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5943 out_mgmt_cmd_cachep:
5944 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
5950 if (!QLA_TGT_MODE_ENABLED())
5953 destroy_workqueue(qla_tgt_wq);
5954 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5955 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);