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 char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
46 module_param(qlini_mode, charp, S_IRUGO);
47 MODULE_PARM_DESC(qlini_mode,
48 "Determines when initiator mode will be enabled. Possible values: "
49 "\"exclusive\" - initiator mode will be enabled on load, "
50 "disabled on enabling target mode and then on disabling target mode "
52 "\"disabled\" - initiator mode will never be enabled; "
53 "\"enabled\" (default) - initiator mode will always stay enabled.");
55 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
58 * From scsi/fc/fc_fcp.h
60 enum fcp_resp_rsp_codes {
62 FCP_DATA_LEN_INVALID = 1,
63 FCP_CMND_FIELDS_INVALID = 2,
64 FCP_DATA_PARAM_MISMATCH = 3,
67 FCP_TMF_INVALID_LUN = 9,
71 * fc_pri_ta from scsi/fc/fc_fcp.h
73 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
74 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
75 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
76 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
77 #define FCP_PTA_MASK 7 /* mask for task attribute field */
78 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
79 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
82 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
83 * must be called under HW lock and could unlock/lock it inside.
84 * It isn't an issue, since in the current implementation on the time when
85 * those functions are called:
87 * - Either context is IRQ and only IRQ handler can modify HW data,
88 * including rings related fields,
90 * - Or access to target mode variables from struct qla_tgt doesn't
91 * cross those functions boundaries, except tgt_stop, which
92 * additionally protected by irq_cmd_count.
94 /* Predefs for callbacks handed to qla2xxx LLD */
95 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
96 struct atio_from_isp *pkt);
97 static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
98 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
99 int fn, void *iocb, int flags);
100 static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
101 *cmd, struct atio_from_isp *atio, int ha_locked);
102 static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
103 struct qla_tgt_srr_imm *imm, int ha_lock);
107 static struct kmem_cache *qla_tgt_cmd_cachep;
108 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
109 static mempool_t *qla_tgt_mgmt_cmd_mempool;
110 static struct workqueue_struct *qla_tgt_wq;
111 static DEFINE_MUTEX(qla_tgt_mutex);
112 static LIST_HEAD(qla_tgt_glist);
114 /* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
115 static struct qla_tgt_sess *qlt_find_sess_by_port_name(
117 const uint8_t *port_name)
119 struct qla_tgt_sess *sess;
121 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
122 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
129 /* Might release hw lock, then reaquire!! */
130 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
132 /* Send marker if required */
133 if (unlikely(vha->marker_needed != 0)) {
134 int rc = qla2x00_issue_marker(vha, vha_locked);
135 if (rc != QLA_SUCCESS) {
136 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
137 "qla_target(%d): issue_marker() failed\n",
146 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
149 struct qla_hw_data *ha = vha->hw;
152 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
155 if (vha->d_id.b.al_pa == d_id[2])
158 BUG_ON(ha->tgt.tgt_vp_map == NULL);
159 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
160 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
161 return ha->tgt.tgt_vp_map[vp_idx].vha;
167 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
170 struct qla_hw_data *ha = vha->hw;
172 if (vha->vp_idx == vp_idx)
175 BUG_ON(ha->tgt.tgt_vp_map == NULL);
176 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
177 return ha->tgt.tgt_vp_map[vp_idx].vha;
182 void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
183 struct atio_from_isp *atio)
185 switch (atio->u.raw.entry_type) {
188 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
189 atio->u.isp24.fcp_hdr.d_id);
190 if (unlikely(NULL == host)) {
191 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
192 "qla_target(%d): Received ATIO_TYPE7 "
193 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
194 atio->u.isp24.fcp_hdr.d_id[0],
195 atio->u.isp24.fcp_hdr.d_id[1],
196 atio->u.isp24.fcp_hdr.d_id[2]);
199 qlt_24xx_atio_pkt(host, atio);
203 case IMMED_NOTIFY_TYPE:
205 struct scsi_qla_host *host = vha;
206 struct imm_ntfy_from_isp *entry =
207 (struct imm_ntfy_from_isp *)atio;
209 if ((entry->u.isp24.vp_index != 0xFF) &&
210 (entry->u.isp24.nport_handle != 0xFFFF)) {
211 host = qlt_find_host_by_vp_idx(vha,
212 entry->u.isp24.vp_index);
213 if (unlikely(!host)) {
214 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
215 "qla_target(%d): Received "
216 "ATIO (IMMED_NOTIFY_TYPE) "
217 "with unknown vp_index %d\n",
218 vha->vp_idx, entry->u.isp24.vp_index);
222 qlt_24xx_atio_pkt(host, atio);
227 ql_dbg(ql_dbg_tgt, vha, 0xe040,
228 "qla_target(%d): Received unknown ATIO atio "
229 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
236 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
238 switch (pkt->entry_type) {
241 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
242 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
244 if (unlikely(!host)) {
245 ql_dbg(ql_dbg_tgt, vha, 0xe041,
246 "qla_target(%d): Response pkt (CTIO_TYPE7) "
247 "received, with unknown vp_index %d\n",
248 vha->vp_idx, entry->vp_index);
251 qlt_response_pkt(host, pkt);
255 case IMMED_NOTIFY_TYPE:
257 struct scsi_qla_host *host = vha;
258 struct imm_ntfy_from_isp *entry =
259 (struct imm_ntfy_from_isp *)pkt;
261 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
262 if (unlikely(!host)) {
263 ql_dbg(ql_dbg_tgt, vha, 0xe042,
264 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
265 "received, with unknown vp_index %d\n",
266 vha->vp_idx, entry->u.isp24.vp_index);
269 qlt_response_pkt(host, pkt);
273 case NOTIFY_ACK_TYPE:
275 struct scsi_qla_host *host = vha;
276 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
278 if (0xFF != entry->u.isp24.vp_index) {
279 host = qlt_find_host_by_vp_idx(vha,
280 entry->u.isp24.vp_index);
281 if (unlikely(!host)) {
282 ql_dbg(ql_dbg_tgt, vha, 0xe043,
283 "qla_target(%d): Response "
284 "pkt (NOTIFY_ACK_TYPE) "
285 "received, with unknown "
286 "vp_index %d\n", vha->vp_idx,
287 entry->u.isp24.vp_index);
291 qlt_response_pkt(host, pkt);
297 struct abts_recv_from_24xx *entry =
298 (struct abts_recv_from_24xx *)pkt;
299 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
301 if (unlikely(!host)) {
302 ql_dbg(ql_dbg_tgt, vha, 0xe044,
303 "qla_target(%d): Response pkt "
304 "(ABTS_RECV_24XX) received, with unknown "
305 "vp_index %d\n", vha->vp_idx, entry->vp_index);
308 qlt_response_pkt(host, pkt);
314 struct abts_resp_to_24xx *entry =
315 (struct abts_resp_to_24xx *)pkt;
316 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
318 if (unlikely(!host)) {
319 ql_dbg(ql_dbg_tgt, vha, 0xe045,
320 "qla_target(%d): Response pkt "
321 "(ABTS_RECV_24XX) received, with unknown "
322 "vp_index %d\n", vha->vp_idx, entry->vp_index);
325 qlt_response_pkt(host, pkt);
330 qlt_response_pkt(vha, pkt);
336 static void qlt_free_session_done(struct work_struct *work)
338 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
340 struct qla_tgt *tgt = sess->tgt;
341 struct scsi_qla_host *vha = sess->vha;
342 struct qla_hw_data *ha = vha->hw;
346 * Release the target session for FC Nexus from fabric module code.
348 if (sess->se_sess != NULL)
349 ha->tgt.tgt_ops->free_session(sess);
351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
352 "Unregistration of sess %p finished\n", sess);
356 * We need to protect against race, when tgt is freed before or
360 if (tgt->sess_count == 0)
361 wake_up_all(&tgt->waitQ);
364 /* ha->hardware_lock supposed to be held on entry */
365 void qlt_unreg_sess(struct qla_tgt_sess *sess)
367 struct scsi_qla_host *vha = sess->vha;
369 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
371 list_del(&sess->sess_list_entry);
373 list_del(&sess->del_list_entry);
375 INIT_WORK(&sess->free_work, qlt_free_session_done);
376 schedule_work(&sess->free_work);
378 EXPORT_SYMBOL(qlt_unreg_sess);
380 /* ha->hardware_lock supposed to be held on entry */
381 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
383 struct qla_hw_data *ha = vha->hw;
384 struct qla_tgt_sess *sess = NULL;
385 uint32_t unpacked_lun, lun = 0;
388 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
389 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
391 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
392 if (loop_id == 0xFFFF) {
393 #if 0 /* FIXME: Re-enable Global event handling.. */
395 atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
396 qlt_clear_tgt_db(ha->tgt.qla_tgt, 1);
397 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
398 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
399 typeof(*sess), sess_list_entry);
401 case QLA_TGT_NEXUS_LOSS_SESS:
402 mcmd = QLA_TGT_NEXUS_LOSS;
404 case QLA_TGT_ABORT_ALL_SESS:
405 mcmd = QLA_TGT_ABORT_ALL;
407 case QLA_TGT_NEXUS_LOSS:
408 case QLA_TGT_ABORT_ALL:
411 ql_dbg(ql_dbg_tgt, vha, 0xe046,
412 "qla_target(%d): Not allowed "
413 "command %x in %s", vha->vp_idx,
422 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
425 ql_dbg(ql_dbg_tgt, vha, 0xe000,
426 "Using sess for qla_tgt_reset: %p\n", sess);
432 ql_dbg(ql_dbg_tgt, vha, 0xe047,
433 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
434 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
437 lun = a->u.isp24.fcp_cmnd.lun;
438 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
440 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
441 iocb, QLA24XX_MGMT_SEND_NACK);
444 /* ha->hardware_lock supposed to be held on entry */
445 static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
448 struct qla_tgt *tgt = sess->tgt;
449 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
454 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
455 "Scheduling sess %p for deletion\n", sess);
456 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
462 sess->expires = jiffies + dev_loss_tmo * HZ;
464 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
465 "qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
466 "deletion in %u secs (expires: %lu) immed: %d\n",
467 sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
468 sess->expires, immediate);
471 schedule_delayed_work(&tgt->sess_del_work, 0);
473 schedule_delayed_work(&tgt->sess_del_work,
474 sess->expires - jiffies);
477 /* ha->hardware_lock supposed to be held on entry */
478 static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
480 struct qla_tgt_sess *sess;
482 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
483 qlt_schedule_sess_for_deletion(sess, true);
485 /* At this point tgt could be already dead */
488 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
491 struct qla_hw_data *ha = vha->hw;
492 dma_addr_t gid_list_dma;
493 struct gid_list_info *gid_list;
498 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
499 &gid_list_dma, GFP_KERNEL);
501 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
502 "qla_target(%d): DMA Alloc failed of %u\n",
503 vha->vp_idx, qla2x00_gid_list_size(ha));
507 /* Get list of logged in devices */
508 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
509 if (rc != QLA_SUCCESS) {
510 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
511 "qla_target(%d): get_id_list() failed: %x\n",
514 goto out_free_id_list;
517 id_iter = (char *)gid_list;
519 for (i = 0; i < entries; i++) {
520 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
521 if ((gid->al_pa == s_id[2]) &&
522 (gid->area == s_id[1]) &&
523 (gid->domain == s_id[0])) {
524 *loop_id = le16_to_cpu(gid->loop_id);
528 id_iter += ha->gid_list_info_size;
532 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
533 gid_list, gid_list_dma);
537 /* ha->hardware_lock supposed to be held on entry */
538 static void qlt_undelete_sess(struct qla_tgt_sess *sess)
540 BUG_ON(!sess->deleted);
542 list_del(&sess->del_list_entry);
546 static void qlt_del_sess_work_fn(struct delayed_work *work)
548 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
550 struct scsi_qla_host *vha = tgt->vha;
551 struct qla_hw_data *ha = vha->hw;
552 struct qla_tgt_sess *sess;
553 unsigned long flags, elapsed;
555 spin_lock_irqsave(&ha->hardware_lock, flags);
556 while (!list_empty(&tgt->del_sess_list)) {
557 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
560 if (time_after_eq(elapsed, sess->expires)) {
561 qlt_undelete_sess(sess);
563 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
564 "Timeout: sess %p about to be deleted\n",
566 ha->tgt.tgt_ops->shutdown_sess(sess);
567 ha->tgt.tgt_ops->put_sess(sess);
569 schedule_delayed_work(&tgt->sess_del_work,
570 sess->expires - elapsed);
574 spin_unlock_irqrestore(&ha->hardware_lock, flags);
578 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
579 * Caller must put it.
581 static struct qla_tgt_sess *qlt_create_sess(
582 struct scsi_qla_host *vha,
586 struct qla_hw_data *ha = vha->hw;
587 struct qla_tgt_sess *sess;
589 unsigned char be_sid[3];
591 /* Check to avoid double sessions */
592 spin_lock_irqsave(&ha->hardware_lock, flags);
593 list_for_each_entry(sess, &ha->tgt.qla_tgt->sess_list,
595 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
596 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
597 "Double sess %p found (s_id %x:%x:%x, "
598 "loop_id %d), updating to d_id %x:%x:%x, "
599 "loop_id %d", sess, sess->s_id.b.domain,
600 sess->s_id.b.al_pa, sess->s_id.b.area,
601 sess->loop_id, fcport->d_id.b.domain,
602 fcport->d_id.b.al_pa, fcport->d_id.b.area,
606 qlt_undelete_sess(sess);
608 kref_get(&sess->se_sess->sess_kref);
609 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
610 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
612 if (sess->local && !local)
614 spin_unlock_irqrestore(&ha->hardware_lock, flags);
619 spin_unlock_irqrestore(&ha->hardware_lock, flags);
621 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
623 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
624 "qla_target(%u): session allocation failed, all commands "
625 "from port %8phC will be refused", vha->vp_idx,
630 sess->tgt = ha->tgt.qla_tgt;
632 sess->s_id = fcport->d_id;
633 sess->loop_id = fcport->loop_id;
636 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
637 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
638 sess, ha->tgt.qla_tgt);
640 be_sid[0] = sess->s_id.b.domain;
641 be_sid[1] = sess->s_id.b.area;
642 be_sid[2] = sess->s_id.b.al_pa;
644 * Determine if this fc_port->port_name is allowed to access
645 * target mode using explict NodeACLs+MappedLUNs, or using
646 * TPG demo mode. If this is successful a target mode FC nexus
649 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
650 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
655 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
656 * access across ->hardware_lock reaquire.
658 kref_get(&sess->se_sess->sess_kref);
660 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
661 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
662 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
664 spin_lock_irqsave(&ha->hardware_lock, flags);
665 list_add_tail(&sess->sess_list_entry, &ha->tgt.qla_tgt->sess_list);
666 ha->tgt.qla_tgt->sess_count++;
667 spin_unlock_irqrestore(&ha->hardware_lock, flags);
669 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
670 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
671 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
672 vha->vp_idx, local ? "local " : "", fcport->port_name,
673 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
674 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
680 * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
682 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
684 struct qla_hw_data *ha = vha->hw;
685 struct qla_tgt *tgt = ha->tgt.qla_tgt;
686 struct qla_tgt_sess *sess;
689 if (!vha->hw->tgt.tgt_ops)
692 if (!tgt || (fcport->port_type != FCT_INITIATOR))
695 spin_lock_irqsave(&ha->hardware_lock, flags);
697 spin_unlock_irqrestore(&ha->hardware_lock, flags);
700 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
702 spin_unlock_irqrestore(&ha->hardware_lock, flags);
704 mutex_lock(&ha->tgt.tgt_mutex);
705 sess = qlt_create_sess(vha, fcport, false);
706 mutex_unlock(&ha->tgt.tgt_mutex);
708 spin_lock_irqsave(&ha->hardware_lock, flags);
710 kref_get(&sess->se_sess->sess_kref);
713 qlt_undelete_sess(sess);
715 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
716 "qla_target(%u): %ssession for port %8phC "
717 "(loop ID %d) reappeared\n", vha->vp_idx,
718 sess->local ? "local " : "", sess->port_name,
721 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
722 "Reappeared sess %p\n", sess);
724 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
725 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
728 if (sess && sess->local) {
729 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
730 "qla_target(%u): local session for "
731 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
732 fcport->port_name, sess->loop_id);
735 ha->tgt.tgt_ops->put_sess(sess);
736 spin_unlock_irqrestore(&ha->hardware_lock, flags);
739 void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
741 struct qla_hw_data *ha = vha->hw;
742 struct qla_tgt *tgt = ha->tgt.qla_tgt;
743 struct qla_tgt_sess *sess;
746 if (!vha->hw->tgt.tgt_ops)
749 if (!tgt || (fcport->port_type != FCT_INITIATOR))
752 spin_lock_irqsave(&ha->hardware_lock, flags);
754 spin_unlock_irqrestore(&ha->hardware_lock, flags);
757 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
759 spin_unlock_irqrestore(&ha->hardware_lock, flags);
763 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
766 qlt_schedule_sess_for_deletion(sess, false);
767 spin_unlock_irqrestore(&ha->hardware_lock, flags);
770 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
772 struct qla_hw_data *ha = tgt->ha;
776 * We need to protect against race, when tgt is freed before or
779 spin_lock_irqsave(&ha->hardware_lock, flags);
780 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
781 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
782 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
783 res = (tgt->sess_count == 0);
784 spin_unlock_irqrestore(&ha->hardware_lock, flags);
789 /* Called by tcm_qla2xxx configfs code */
790 void qlt_stop_phase1(struct qla_tgt *tgt)
792 struct scsi_qla_host *vha = tgt->vha;
793 struct qla_hw_data *ha = tgt->ha;
796 if (tgt->tgt_stop || tgt->tgt_stopped) {
797 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
798 "Already in tgt->tgt_stop or tgt_stopped state\n");
803 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
806 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
807 * Lock is needed, because we still can get an incoming packet.
809 mutex_lock(&ha->tgt.tgt_mutex);
810 spin_lock_irqsave(&ha->hardware_lock, flags);
812 qlt_clear_tgt_db(tgt, true);
813 spin_unlock_irqrestore(&ha->hardware_lock, flags);
814 mutex_unlock(&ha->tgt.tgt_mutex);
816 flush_delayed_work(&tgt->sess_del_work);
818 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
819 "Waiting for sess works (tgt %p)", tgt);
820 spin_lock_irqsave(&tgt->sess_work_lock, flags);
821 while (!list_empty(&tgt->sess_works_list)) {
822 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
823 flush_scheduled_work();
824 spin_lock_irqsave(&tgt->sess_work_lock, flags);
826 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
828 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
829 "Waiting for tgt %p: list_empty(sess_list)=%d "
830 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
833 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
836 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
837 qlt_disable_vha(vha);
839 /* Wait for sessions to clear out (just in case) */
840 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
842 EXPORT_SYMBOL(qlt_stop_phase1);
844 /* Called by tcm_qla2xxx configfs code */
845 void qlt_stop_phase2(struct qla_tgt *tgt)
847 struct qla_hw_data *ha = tgt->ha;
850 if (tgt->tgt_stopped) {
851 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf04f,
852 "Already in tgt->tgt_stopped state\n");
857 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00b,
858 "Waiting for %d IRQ commands to complete (tgt %p)",
859 tgt->irq_cmd_count, tgt);
861 mutex_lock(&ha->tgt.tgt_mutex);
862 spin_lock_irqsave(&ha->hardware_lock, flags);
863 while (tgt->irq_cmd_count != 0) {
864 spin_unlock_irqrestore(&ha->hardware_lock, flags);
866 spin_lock_irqsave(&ha->hardware_lock, flags);
869 tgt->tgt_stopped = 1;
870 spin_unlock_irqrestore(&ha->hardware_lock, flags);
871 mutex_unlock(&ha->tgt.tgt_mutex);
873 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00c, "Stop of tgt %p finished",
876 EXPORT_SYMBOL(qlt_stop_phase2);
878 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
879 static void qlt_release(struct qla_tgt *tgt)
881 struct qla_hw_data *ha = tgt->ha;
883 if ((ha->tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
884 qlt_stop_phase2(tgt);
886 ha->tgt.qla_tgt = NULL;
888 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00d,
889 "Release of tgt %p finished\n", tgt);
894 /* ha->hardware_lock supposed to be held on entry */
895 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
896 const void *param, unsigned int param_size)
898 struct qla_tgt_sess_work_param *prm;
901 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
903 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
904 "qla_target(%d): Unable to create session "
905 "work, command will be refused", 0);
909 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
910 "Scheduling work (type %d, prm %p)"
911 " to find session for param %p (size %d, tgt %p)\n",
912 type, prm, param, param_size, tgt);
915 memcpy(&prm->tm_iocb, param, param_size);
917 spin_lock_irqsave(&tgt->sess_work_lock, flags);
918 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
919 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
921 schedule_work(&tgt->sess_work);
927 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
929 static void qlt_send_notify_ack(struct scsi_qla_host *vha,
930 struct imm_ntfy_from_isp *ntfy,
931 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
932 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
934 struct qla_hw_data *ha = vha->hw;
936 struct nack_to_isp *nack;
938 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
940 /* Send marker if required */
941 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
944 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
946 ql_dbg(ql_dbg_tgt, vha, 0xe049,
947 "qla_target(%d): %s failed: unable to allocate "
948 "request packet\n", vha->vp_idx, __func__);
952 if (ha->tgt.qla_tgt != NULL)
953 ha->tgt.qla_tgt->notify_ack_expected++;
955 pkt->entry_type = NOTIFY_ACK_TYPE;
956 pkt->entry_count = 1;
958 nack = (struct nack_to_isp *)pkt;
959 nack->ox_id = ntfy->ox_id;
961 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
962 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
963 nack->u.isp24.flags = ntfy->u.isp24.flags &
964 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
966 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
967 nack->u.isp24.status = ntfy->u.isp24.status;
968 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
969 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
970 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
971 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
972 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
973 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
974 nack->u.isp24.srr_reject_code = srr_reject_code;
975 nack->u.isp24.srr_reject_code_expl = srr_explan;
976 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
978 ql_dbg(ql_dbg_tgt, vha, 0xe005,
979 "qla_target(%d): Sending 24xx Notify Ack %d\n",
980 vha->vp_idx, nack->u.isp24.status);
982 qla2x00_start_iocbs(vha, vha->req);
986 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
988 static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
989 struct abts_recv_from_24xx *abts, uint32_t status,
992 struct qla_hw_data *ha = vha->hw;
993 struct abts_resp_to_24xx *resp;
997 ql_dbg(ql_dbg_tgt, vha, 0xe006,
998 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1001 /* Send marker if required */
1002 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1005 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1007 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1008 "qla_target(%d): %s failed: unable to allocate "
1009 "request packet", vha->vp_idx, __func__);
1013 resp->entry_type = ABTS_RESP_24XX;
1014 resp->entry_count = 1;
1015 resp->nport_handle = abts->nport_handle;
1016 resp->vp_index = vha->vp_idx;
1017 resp->sof_type = abts->sof_type;
1018 resp->exchange_address = abts->exchange_address;
1019 resp->fcp_hdr_le = abts->fcp_hdr_le;
1020 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1021 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1022 F_CTL_SEQ_INITIATIVE);
1023 p = (uint8_t *)&f_ctl;
1024 resp->fcp_hdr_le.f_ctl[0] = *p++;
1025 resp->fcp_hdr_le.f_ctl[1] = *p++;
1026 resp->fcp_hdr_le.f_ctl[2] = *p;
1028 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1029 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1030 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1031 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1032 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1033 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1035 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1036 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1037 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1038 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1039 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1040 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1042 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1043 if (status == FCP_TMF_CMPL) {
1044 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1045 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1046 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1047 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1048 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1049 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1051 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1052 resp->payload.ba_rjt.reason_code =
1053 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1054 /* Other bytes are zero */
1057 ha->tgt.qla_tgt->abts_resp_expected++;
1059 qla2x00_start_iocbs(vha, vha->req);
1063 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1065 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1066 struct abts_resp_from_24xx_fw *entry)
1068 struct ctio7_to_24xx *ctio;
1070 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1071 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1072 /* Send marker if required */
1073 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1076 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1078 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1079 "qla_target(%d): %s failed: unable to allocate "
1080 "request packet\n", vha->vp_idx, __func__);
1085 * We've got on entrance firmware's response on by us generated
1086 * ABTS response. So, in it ID fields are reversed.
1089 ctio->entry_type = CTIO_TYPE7;
1090 ctio->entry_count = 1;
1091 ctio->nport_handle = entry->nport_handle;
1092 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1093 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1094 ctio->vp_index = vha->vp_idx;
1095 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1096 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1097 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1098 ctio->exchange_addr = entry->exchange_addr_to_abort;
1099 ctio->u.status1.flags =
1100 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1101 CTIO7_FLAGS_TERMINATE);
1102 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1104 qla2x00_start_iocbs(vha, vha->req);
1106 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1107 FCP_TMF_CMPL, true);
1110 /* ha->hardware_lock supposed to be held on entry */
1111 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1112 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1114 struct qla_hw_data *ha = vha->hw;
1115 struct se_session *se_sess = sess->se_sess;
1116 struct qla_tgt_mgmt_cmd *mcmd;
1117 struct se_cmd *se_cmd;
1120 bool found_lun = false;
1122 spin_lock(&se_sess->sess_cmd_lock);
1123 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1124 struct qla_tgt_cmd *cmd =
1125 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1126 if (cmd->tag == abts->exchange_addr_to_abort) {
1127 lun = cmd->unpacked_lun;
1132 spin_unlock(&se_sess->sess_cmd_lock);
1137 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1138 "qla_target(%d): task abort (tag=%d)\n",
1139 vha->vp_idx, abts->exchange_addr_to_abort);
1141 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1143 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1144 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1145 vha->vp_idx, __func__);
1148 memset(mcmd, 0, sizeof(*mcmd));
1151 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1153 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
1154 abts->exchange_addr_to_abort);
1156 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1157 "qla_target(%d): tgt_ops->handle_tmr()"
1158 " failed: %d", vha->vp_idx, rc);
1159 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1167 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1169 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1170 struct abts_recv_from_24xx *abts)
1172 struct qla_hw_data *ha = vha->hw;
1173 struct qla_tgt_sess *sess;
1174 uint32_t tag = abts->exchange_addr_to_abort;
1178 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1179 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1180 "qla_target(%d): ABTS: Abort Sequence not "
1181 "supported\n", vha->vp_idx);
1182 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1186 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1187 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1188 "qla_target(%d): ABTS: Unknown Exchange "
1189 "Address received\n", vha->vp_idx);
1190 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1195 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1196 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1197 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1198 le32_to_cpu(abts->fcp_hdr_le.parameter));
1200 s_id[0] = abts->fcp_hdr_le.s_id[2];
1201 s_id[1] = abts->fcp_hdr_le.s_id[1];
1202 s_id[2] = abts->fcp_hdr_le.s_id[0];
1204 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1206 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1207 "qla_target(%d): task abort for non-existant session\n",
1209 rc = qlt_sched_sess_work(ha->tgt.qla_tgt,
1210 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1212 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1218 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1220 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1221 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1223 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1229 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1231 static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1232 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1234 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1235 struct ctio7_to_24xx *ctio;
1237 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1238 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1239 ha, atio, resp_code);
1241 /* Send marker if required */
1242 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1245 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1247 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1248 "qla_target(%d): %s failed: unable to allocate "
1249 "request packet\n", ha->vp_idx, __func__);
1253 ctio->entry_type = CTIO_TYPE7;
1254 ctio->entry_count = 1;
1255 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1256 ctio->nport_handle = mcmd->sess->loop_id;
1257 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1258 ctio->vp_index = ha->vp_idx;
1259 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1260 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1261 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1262 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1263 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1264 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1265 CTIO7_FLAGS_SEND_STATUS);
1266 ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1267 ctio->u.status1.scsi_status =
1268 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1269 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
1270 ctio->u.status1.sense_data[0] = resp_code;
1272 qla2x00_start_iocbs(ha, ha->req);
1275 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1277 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1279 EXPORT_SYMBOL(qlt_free_mcmd);
1281 /* callback from target fabric module code */
1282 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1284 struct scsi_qla_host *vha = mcmd->sess->vha;
1285 struct qla_hw_data *ha = vha->hw;
1286 unsigned long flags;
1288 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1289 "TM response mcmd (%p) status %#x state %#x",
1290 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1292 spin_lock_irqsave(&ha->hardware_lock, flags);
1293 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1294 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1297 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1298 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1299 mcmd->fc_tm_rsp, false);
1301 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1305 * Make the callback for ->free_mcmd() to queue_work() and invoke
1306 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1307 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1308 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1309 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1310 * qlt_xmit_tm_rsp() returns here..
1312 ha->tgt.tgt_ops->free_mcmd(mcmd);
1313 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1315 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1318 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1320 struct qla_tgt_cmd *cmd = prm->cmd;
1322 BUG_ON(cmd->sg_cnt == 0);
1324 prm->sg = (struct scatterlist *)cmd->sg;
1325 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1326 cmd->sg_cnt, cmd->dma_data_direction);
1327 if (unlikely(prm->seg_cnt == 0))
1330 prm->cmd->sg_mapped = 1;
1333 * If greater than four sg entries then we need to allocate
1334 * the continuation entries
1336 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1337 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1338 prm->tgt->datasegs_per_cmd, prm->tgt->datasegs_per_cont);
1340 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
1341 prm->seg_cnt, prm->req_cnt);
1345 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1346 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1347 0, prm->cmd->sg_cnt);
1351 static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
1352 struct qla_tgt_cmd *cmd)
1354 struct qla_hw_data *ha = vha->hw;
1356 BUG_ON(!cmd->sg_mapped);
1357 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1361 static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1364 struct qla_hw_data *ha = vha->hw;
1365 device_reg_t __iomem *reg = ha->iobase;
1368 if (vha->req->cnt < (req_cnt + 2)) {
1369 cnt = (uint16_t)RD_REG_DWORD(®->isp24.req_q_out);
1371 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
1372 "Request ring circled: cnt=%d, vha->->ring_index=%d, "
1373 "vha->req->cnt=%d, req_cnt=%d\n", cnt,
1374 vha->req->ring_index, vha->req->cnt, req_cnt);
1375 if (vha->req->ring_index < cnt)
1376 vha->req->cnt = cnt - vha->req->ring_index;
1378 vha->req->cnt = vha->req->length -
1379 (vha->req->ring_index - cnt);
1382 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1383 ql_dbg(ql_dbg_tgt, vha, 0xe00b,
1384 "qla_target(%d): There is no room in the "
1385 "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
1386 "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
1387 vha->req->cnt, req_cnt);
1390 vha->req->cnt -= req_cnt;
1396 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1398 static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1400 /* Adjust ring index. */
1401 vha->req->ring_index++;
1402 if (vha->req->ring_index == vha->req->length) {
1403 vha->req->ring_index = 0;
1404 vha->req->ring_ptr = vha->req->ring;
1406 vha->req->ring_ptr++;
1408 return (cont_entry_t *)vha->req->ring_ptr;
1411 /* ha->hardware_lock supposed to be held on entry */
1412 static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1414 struct qla_hw_data *ha = vha->hw;
1417 h = ha->tgt.current_handle;
1418 /* always increment cmd handle */
1421 if (h > DEFAULT_OUTSTANDING_COMMANDS)
1422 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1423 if (h == ha->tgt.current_handle) {
1424 ql_dbg(ql_dbg_tgt, vha, 0xe04e,
1425 "qla_target(%d): Ran out of "
1426 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1427 h = QLA_TGT_NULL_HANDLE;
1430 } while ((h == QLA_TGT_NULL_HANDLE) ||
1431 (h == QLA_TGT_SKIP_HANDLE) ||
1432 (ha->tgt.cmds[h-1] != NULL));
1434 if (h != QLA_TGT_NULL_HANDLE)
1435 ha->tgt.current_handle = h;
1440 /* ha->hardware_lock supposed to be held on entry */
1441 static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1442 struct scsi_qla_host *vha)
1445 struct ctio7_to_24xx *pkt;
1446 struct qla_hw_data *ha = vha->hw;
1447 struct atio_from_isp *atio = &prm->cmd->atio;
1449 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1451 memset(pkt, 0, sizeof(*pkt));
1453 pkt->entry_type = CTIO_TYPE7;
1454 pkt->entry_count = (uint8_t)prm->req_cnt;
1455 pkt->vp_index = vha->vp_idx;
1457 h = qlt_make_handle(vha);
1458 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1460 * CTIO type 7 from the firmware doesn't provide a way to
1461 * know the initiator's LOOP ID, hence we can't find
1462 * the session and, so, the command.
1466 ha->tgt.cmds[h-1] = prm->cmd;
1468 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1469 pkt->nport_handle = prm->cmd->loop_id;
1470 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1471 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1472 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1473 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1474 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1475 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
1476 pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1477 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1479 ql_dbg(ql_dbg_tgt, vha, 0xe00c,
1480 "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
1481 vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT,
1482 le16_to_cpu(pkt->u.status0.ox_id));
1487 * ha->hardware_lock supposed to be held on entry. We have already made sure
1488 * that there is sufficient amount of request entries to not drop it.
1490 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1491 struct scsi_qla_host *vha)
1494 uint32_t *dword_ptr;
1495 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1497 /* Build continuation packets */
1498 while (prm->seg_cnt > 0) {
1499 cont_a64_entry_t *cont_pkt64 =
1500 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1503 * Make sure that from cont_pkt64 none of
1504 * 64-bit specific fields used for 32-bit
1505 * addressing. Cast to (cont_entry_t *) for
1509 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1511 cont_pkt64->entry_count = 1;
1512 cont_pkt64->sys_define = 0;
1514 if (enable_64bit_addressing) {
1515 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1517 (uint32_t *)&cont_pkt64->dseg_0_address;
1519 cont_pkt64->entry_type = CONTINUE_TYPE;
1521 (uint32_t *)&((cont_entry_t *)
1522 cont_pkt64)->dseg_0_address;
1525 /* Load continuation entry data segments */
1527 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1528 cnt++, prm->seg_cnt--) {
1530 cpu_to_le32(pci_dma_lo32
1531 (sg_dma_address(prm->sg)));
1532 if (enable_64bit_addressing) {
1534 cpu_to_le32(pci_dma_hi32
1538 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1540 ql_dbg(ql_dbg_tgt, vha, 0xe00d,
1541 "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
1542 (long long unsigned int)
1543 pci_dma_hi32(sg_dma_address(prm->sg)),
1544 (long long unsigned int)
1545 pci_dma_lo32(sg_dma_address(prm->sg)),
1546 (int)sg_dma_len(prm->sg));
1548 prm->sg = sg_next(prm->sg);
1554 * ha->hardware_lock supposed to be held on entry. We have already made sure
1555 * that there is sufficient amount of request entries to not drop it.
1557 static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1558 struct scsi_qla_host *vha)
1561 uint32_t *dword_ptr;
1562 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1563 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1565 ql_dbg(ql_dbg_tgt, vha, 0xe00e,
1566 "iocb->scsi_status=%x, iocb->flags=%x\n",
1567 le16_to_cpu(pkt24->u.status0.scsi_status),
1568 le16_to_cpu(pkt24->u.status0.flags));
1570 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1572 /* Setup packet address segment pointer */
1573 dword_ptr = pkt24->u.status0.dseg_0_address;
1575 /* Set total data segment count */
1577 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1579 if (prm->seg_cnt == 0) {
1580 /* No data transfer */
1586 /* If scatter gather */
1587 ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
1589 /* Load command entry data segments */
1591 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1592 cnt++, prm->seg_cnt--) {
1594 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1595 if (enable_64bit_addressing) {
1597 cpu_to_le32(pci_dma_hi32(
1598 sg_dma_address(prm->sg)));
1600 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1602 ql_dbg(ql_dbg_tgt, vha, 0xe010,
1603 "S/G Segment phys_addr=%llx:%llx, len=%d\n",
1604 (long long unsigned int)pci_dma_hi32(sg_dma_address(
1606 (long long unsigned int)pci_dma_lo32(sg_dma_address(
1608 (int)sg_dma_len(prm->sg));
1610 prm->sg = sg_next(prm->sg);
1613 qlt_load_cont_data_segments(prm, vha);
1616 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1618 return cmd->bufflen > 0;
1622 * Called without ha->hardware_lock held
1624 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1625 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1626 uint32_t *full_req_cnt)
1628 struct qla_tgt *tgt = cmd->tgt;
1629 struct scsi_qla_host *vha = tgt->vha;
1630 struct qla_hw_data *ha = vha->hw;
1631 struct se_cmd *se_cmd = &cmd->se_cmd;
1633 if (unlikely(cmd->aborted)) {
1634 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1635 "qla_target(%d): terminating exchange "
1636 "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
1639 cmd->state = QLA_TGT_STATE_ABORTED;
1641 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1643 /* !! At this point cmd could be already freed !! */
1644 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1647 ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u\n",
1648 vha->vp_idx, cmd->tag);
1652 prm->rq_result = scsi_status;
1653 prm->sense_buffer = &cmd->sense_buffer[0];
1654 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1658 prm->add_status_pkt = 0;
1660 ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
1661 prm->rq_result, xmit_type);
1663 /* Send marker if required */
1664 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1667 ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
1669 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1670 if (qlt_pci_map_calc_cnt(prm) != 0)
1674 *full_req_cnt = prm->req_cnt;
1676 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1677 prm->residual = se_cmd->residual_count;
1678 ql_dbg(ql_dbg_tgt, vha, 0xe014,
1679 "Residual underflow: %d (tag %d, "
1680 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1681 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1682 cmd->bufflen, prm->rq_result);
1683 prm->rq_result |= SS_RESIDUAL_UNDER;
1684 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1685 prm->residual = se_cmd->residual_count;
1686 ql_dbg(ql_dbg_tgt, vha, 0xe015,
1687 "Residual overflow: %d (tag %d, "
1688 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1689 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1690 cmd->bufflen, prm->rq_result);
1691 prm->rq_result |= SS_RESIDUAL_OVER;
1694 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1696 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1697 * ignored in *xmit_response() below
1699 if (qlt_has_data(cmd)) {
1700 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1701 (IS_FWI2_CAPABLE(ha) &&
1702 (prm->rq_result != 0))) {
1703 prm->add_status_pkt = 1;
1709 ql_dbg(ql_dbg_tgt, vha, 0xe016,
1710 "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
1711 prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
1716 static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1717 struct qla_tgt_cmd *cmd, int sending_sense)
1719 if (ha->tgt.enable_class_2)
1723 return cmd->conf_compl_supported;
1725 return ha->tgt.enable_explicit_conf &&
1726 cmd->conf_compl_supported;
1729 #ifdef CONFIG_QLA_TGT_DEBUG_SRR
1731 * Original taken from the XFS code
1733 static unsigned long qlt_srr_random(void)
1736 static unsigned long RandomValue;
1737 static DEFINE_SPINLOCK(lock);
1738 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1742 unsigned long flags;
1744 spin_lock_irqsave(&lock, flags);
1746 RandomValue = jiffies;
1752 rv = 16807 * lo - 2836 * hi;
1756 spin_unlock_irqrestore(&lock, flags);
1760 static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1762 #if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1763 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1765 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1766 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1767 "Dropping cmd %p (tag %d) status", cmd, cmd->tag);
1771 * It's currently not possible to simulate SRRs for FCP_WRITE without
1772 * a physical link layer failure, so don't even try here..
1774 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1777 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1778 ((qlt_srr_random() % 100) == 20)) {
1780 unsigned int tot_len = 0;
1783 leave = qlt_srr_random() % cmd->sg_cnt;
1785 for (i = 0; i < leave; i++)
1786 tot_len += cmd->sg[i].length;
1788 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1789 "Cutting cmd %p (tag %d) buffer"
1790 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1791 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
1792 cmd->bufflen, cmd->sg_cnt);
1794 cmd->bufflen = tot_len;
1795 cmd->sg_cnt = leave;
1798 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1799 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1801 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1802 "Cutting cmd %p (tag %d) buffer head "
1803 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
1806 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1807 else if (qlt_set_data_offset(cmd, offset)) {
1808 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1809 "qlt_set_data_offset() failed (tag %d)", cmd->tag);
1814 static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1818 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1819 struct qla_tgt_prm *prm)
1821 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1822 (uint32_t)sizeof(ctio->u.status1.sense_data));
1823 ctio->u.status0.flags |=
1824 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1825 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1826 ctio->u.status0.flags |= __constant_cpu_to_le16(
1827 CTIO7_FLAGS_EXPLICIT_CONFORM |
1828 CTIO7_FLAGS_CONFORM_REQ);
1830 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1831 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1832 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1835 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1836 if (prm->cmd->se_cmd.scsi_status != 0) {
1837 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1838 "Skipping EXPLICIT_CONFORM and "
1839 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1840 "non GOOD status\n");
1841 goto skip_explict_conf;
1843 ctio->u.status1.flags |= __constant_cpu_to_le16(
1844 CTIO7_FLAGS_EXPLICIT_CONFORM |
1845 CTIO7_FLAGS_CONFORM_REQ);
1848 ctio->u.status1.flags &=
1849 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1850 ctio->u.status1.flags |=
1851 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1852 ctio->u.status1.scsi_status |=
1853 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1854 ctio->u.status1.sense_length =
1855 cpu_to_le16(prm->sense_buffer_len);
1856 for (i = 0; i < prm->sense_buffer_len/4; i++)
1857 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1858 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1860 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
1863 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
1864 "qla_target(%d): %d bytes of sense "
1865 "lost", prm->tgt->ha->vp_idx,
1866 prm->sense_buffer_len % 4);
1872 ctio->u.status1.flags &=
1873 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1874 ctio->u.status1.flags |=
1875 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1876 ctio->u.status1.sense_length = 0;
1877 memset(ctio->u.status1.sense_data, 0,
1878 sizeof(ctio->u.status1.sense_data));
1881 /* Sense with len > 24, is it possible ??? */
1885 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
1886 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
1888 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
1889 uint8_t scsi_status)
1891 struct scsi_qla_host *vha = cmd->vha;
1892 struct qla_hw_data *ha = vha->hw;
1893 struct ctio7_to_24xx *pkt;
1894 struct qla_tgt_prm prm;
1895 uint32_t full_req_cnt = 0;
1896 unsigned long flags = 0;
1899 memset(&prm, 0, sizeof(prm));
1900 qlt_check_srr_debug(cmd, &xmit_type);
1902 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
1903 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, "
1904 "cmd->dma_data_direction=%d\n", (xmit_type & QLA_TGT_XMIT_STATUS) ?
1905 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction);
1907 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
1909 if (unlikely(res != 0)) {
1910 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
1916 spin_lock_irqsave(&ha->hardware_lock, flags);
1918 /* Does F/W have an IOCBs for this request */
1919 res = qlt_check_reserve_free_req(vha, full_req_cnt);
1921 goto out_unmap_unlock;
1923 res = qlt_24xx_build_ctio_pkt(&prm, vha);
1924 if (unlikely(res != 0))
1925 goto out_unmap_unlock;
1928 pkt = (struct ctio7_to_24xx *)prm.pkt;
1930 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
1931 pkt->u.status0.flags |=
1932 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
1933 CTIO7_FLAGS_STATUS_MODE_0);
1935 qlt_load_data_segments(&prm, vha);
1937 if (prm.add_status_pkt == 0) {
1938 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1939 pkt->u.status0.scsi_status =
1940 cpu_to_le16(prm.rq_result);
1941 pkt->u.status0.residual =
1942 cpu_to_le32(prm.residual);
1943 pkt->u.status0.flags |= __constant_cpu_to_le16(
1944 CTIO7_FLAGS_SEND_STATUS);
1945 if (qlt_need_explicit_conf(ha, cmd, 0)) {
1946 pkt->u.status0.flags |=
1947 __constant_cpu_to_le16(
1948 CTIO7_FLAGS_EXPLICIT_CONFORM |
1949 CTIO7_FLAGS_CONFORM_REQ);
1955 * We have already made sure that there is sufficient
1956 * amount of request entries to not drop HW lock in
1959 struct ctio7_to_24xx *ctio =
1960 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
1962 ql_dbg(ql_dbg_tgt, vha, 0xe019,
1963 "Building additional status packet\n");
1965 memcpy(ctio, pkt, sizeof(*ctio));
1966 ctio->entry_count = 1;
1967 ctio->dseg_count = 0;
1968 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
1969 CTIO7_FLAGS_DATA_IN);
1971 /* Real finish is ctio_m1's finish */
1972 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
1973 pkt->u.status0.flags |= __constant_cpu_to_le16(
1974 CTIO7_FLAGS_DONT_RET_CTIO);
1975 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
1977 pr_debug("Status CTIO7: %p\n", ctio);
1980 qlt_24xx_init_ctio_to_isp(pkt, &prm);
1983 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
1985 ql_dbg(ql_dbg_tgt, vha, 0xe01a,
1986 "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
1989 qla2x00_start_iocbs(vha, vha->req);
1990 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1996 qlt_unmap_sg(vha, cmd);
1997 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2001 EXPORT_SYMBOL(qlt_xmit_response);
2003 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2005 struct ctio7_to_24xx *pkt;
2006 struct scsi_qla_host *vha = cmd->vha;
2007 struct qla_hw_data *ha = vha->hw;
2008 struct qla_tgt *tgt = cmd->tgt;
2009 struct qla_tgt_prm prm;
2010 unsigned long flags;
2013 memset(&prm, 0, sizeof(prm));
2019 /* Send marker if required */
2020 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2023 ql_dbg(ql_dbg_tgt, vha, 0xe01b, "CTIO_start: vha(%d)",
2026 /* Calculate number of entries and segments required */
2027 if (qlt_pci_map_calc_cnt(&prm) != 0)
2030 spin_lock_irqsave(&ha->hardware_lock, flags);
2032 /* Does F/W have an IOCBs for this request */
2033 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2035 goto out_unlock_free_unmap;
2037 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2038 if (unlikely(res != 0))
2039 goto out_unlock_free_unmap;
2040 pkt = (struct ctio7_to_24xx *)prm.pkt;
2041 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2042 CTIO7_FLAGS_STATUS_MODE_0);
2043 qlt_load_data_segments(&prm, vha);
2045 cmd->state = QLA_TGT_STATE_NEED_DATA;
2047 qla2x00_start_iocbs(vha, vha->req);
2048 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2052 out_unlock_free_unmap:
2054 qlt_unmap_sg(vha, cmd);
2055 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2059 EXPORT_SYMBOL(qlt_rdy_to_xfer);
2061 /* If hardware_lock held on entry, might drop it, then reaquire */
2062 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2063 static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2064 struct qla_tgt_cmd *cmd,
2065 struct atio_from_isp *atio)
2067 struct ctio7_to_24xx *ctio24;
2068 struct qla_hw_data *ha = vha->hw;
2072 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2074 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
2076 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2077 "qla_target(%d): %s failed: unable to allocate "
2078 "request packet\n", vha->vp_idx, __func__);
2083 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2084 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2085 "qla_target(%d): Terminating cmd %p with "
2086 "incorrect state %d\n", vha->vp_idx, cmd,
2092 pkt->entry_count = 1;
2093 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2095 ctio24 = (struct ctio7_to_24xx *)pkt;
2096 ctio24->entry_type = CTIO_TYPE7;
2097 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2098 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2099 ctio24->vp_index = vha->vp_idx;
2100 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2101 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2102 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2103 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2104 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2105 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2106 CTIO7_FLAGS_TERMINATE);
2107 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
2109 /* Most likely, it isn't needed */
2110 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2111 &atio->u.isp24.fcp_cmnd.add_cdb[
2112 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2113 if (ctio24->u.status1.residual != 0)
2114 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2116 qla2x00_start_iocbs(vha, vha->req);
2120 static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2121 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2123 unsigned long flags;
2126 if (qlt_issue_marker(vha, ha_locked) < 0)
2130 rc = __qlt_send_term_exchange(vha, cmd, atio);
2133 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2134 rc = __qlt_send_term_exchange(vha, cmd, atio);
2135 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2138 if (!ha_locked && !in_interrupt())
2139 msleep(250); /* just in case */
2141 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2145 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2147 BUG_ON(cmd->sg_mapped);
2149 if (unlikely(cmd->free_sg))
2151 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2153 EXPORT_SYMBOL(qlt_free_cmd);
2155 /* ha->hardware_lock supposed to be held on entry */
2156 static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2157 struct qla_tgt_cmd *cmd, void *ctio)
2159 struct qla_tgt_srr_ctio *sc;
2160 struct qla_hw_data *ha = vha->hw;
2161 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2162 struct qla_tgt_srr_imm *imm;
2166 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2167 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2170 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2171 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2176 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2179 /* IRQ is already OFF */
2180 spin_lock(&tgt->srr_lock);
2181 sc->srr_id = tgt->ctio_srr_id;
2182 list_add_tail(&sc->srr_list_entry,
2183 &tgt->srr_ctio_list);
2184 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2185 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2186 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2188 list_for_each_entry(imm, &tgt->srr_imm_list,
2190 if (imm->srr_id == sc->srr_id) {
2196 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2197 "Scheduling srr work\n");
2198 schedule_work(&tgt->srr_work);
2200 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2201 "qla_target(%d): imm_srr_id "
2202 "== ctio_srr_id (%d), but there is no "
2203 "corresponding SRR IMM, deleting CTIO "
2204 "SRR %p\n", vha->vp_idx,
2205 tgt->ctio_srr_id, sc);
2206 list_del(&sc->srr_list_entry);
2207 spin_unlock(&tgt->srr_lock);
2213 spin_unlock(&tgt->srr_lock);
2215 struct qla_tgt_srr_imm *ti;
2217 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2218 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2220 spin_lock(&tgt->srr_lock);
2221 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2223 if (imm->srr_id == tgt->ctio_srr_id) {
2224 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2225 "IMM SRR %p deleted (id %d)\n",
2227 list_del(&imm->srr_list_entry);
2228 qlt_reject_free_srr_imm(vha, imm, 1);
2231 spin_unlock(&tgt->srr_lock);
2240 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2242 static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2243 struct qla_tgt_cmd *cmd, uint32_t status)
2248 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2250 __constant_cpu_to_le16(OF_TERM_EXCH));
2255 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2260 /* ha->hardware_lock supposed to be held on entry */
2261 static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2264 struct qla_hw_data *ha = vha->hw;
2267 if (ha->tgt.cmds[handle] != NULL) {
2268 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2269 ha->tgt.cmds[handle] = NULL;
2275 /* ha->hardware_lock supposed to be held on entry */
2276 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2277 uint32_t handle, void *ctio)
2279 struct qla_tgt_cmd *cmd = NULL;
2281 /* Clear out internal marks */
2282 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2283 CTIO_INTERMEDIATE_HANDLE_MARK);
2285 if (handle != QLA_TGT_NULL_HANDLE) {
2286 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
2287 ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
2288 "SKIP_HANDLE CTIO\n");
2291 /* handle-1 is actually used */
2292 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2293 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2294 "qla_target(%d): Wrong handle %x received\n",
2295 vha->vp_idx, handle);
2298 cmd = qlt_get_cmd(vha, handle);
2299 if (unlikely(cmd == NULL)) {
2300 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2301 "qla_target(%d): Suspicious: unable to "
2302 "find the command with handle %x\n", vha->vp_idx,
2306 } else if (ctio != NULL) {
2307 /* We can't get loop ID from CTIO7 */
2308 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2309 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2310 "support NULL handles\n", vha->vp_idx);
2318 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2320 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2321 uint32_t status, void *ctio)
2323 struct qla_hw_data *ha = vha->hw;
2324 struct se_cmd *se_cmd;
2325 struct target_core_fabric_ops *tfo;
2326 struct qla_tgt_cmd *cmd;
2328 ql_dbg(ql_dbg_tgt, vha, 0xe01e,
2329 "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
2330 vha->vp_idx, ctio, status, handle);
2332 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2333 /* That could happen only in case of an error/reset/abort */
2334 if (status != CTIO_SUCCESS) {
2335 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2336 "Intermediate CTIO received"
2337 " (status %x)\n", status);
2342 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
2346 se_cmd = &cmd->se_cmd;
2347 tfo = se_cmd->se_tfo;
2350 qlt_unmap_sg(vha, cmd);
2352 if (unlikely(status != CTIO_SUCCESS)) {
2353 switch (status & 0xFFFF) {
2354 case CTIO_LIP_RESET:
2355 case CTIO_TARGET_RESET:
2358 case CTIO_INVALID_RX_ID:
2360 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
2361 "qla_target(%d): CTIO with "
2362 "status %#x received, state %x, se_cmd %p, "
2363 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
2364 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
2365 status, cmd->state, se_cmd);
2368 case CTIO_PORT_LOGGED_OUT:
2369 case CTIO_PORT_UNAVAILABLE:
2370 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
2371 "qla_target(%d): CTIO with PORT LOGGED "
2372 "OUT (29) or PORT UNAVAILABLE (28) status %x "
2373 "received (state %x, se_cmd %p)\n", vha->vp_idx,
2374 status, cmd->state, se_cmd);
2377 case CTIO_SRR_RECEIVED:
2378 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
2379 "qla_target(%d): CTIO with SRR_RECEIVED"
2380 " status %x received (state %x, se_cmd %p)\n",
2381 vha->vp_idx, status, cmd->state, se_cmd);
2382 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
2388 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
2389 "qla_target(%d): CTIO with error status "
2390 "0x%x received (state %x, se_cmd %p\n",
2391 vha->vp_idx, status, cmd->state, se_cmd);
2395 if (cmd->state != QLA_TGT_STATE_NEED_DATA)
2396 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
2400 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
2401 ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
2402 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2405 cmd->state = QLA_TGT_STATE_DATA_IN;
2407 if (unlikely(status != CTIO_SUCCESS))
2410 cmd->write_data_transferred = 1;
2412 ql_dbg(ql_dbg_tgt, vha, 0xe020,
2413 "Data received, context %x, rx_status %d\n",
2416 ha->tgt.tgt_ops->handle_data(cmd);
2418 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
2419 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
2420 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
2422 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
2423 "qla_target(%d): A command in state (%d) should "
2424 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
2427 if (unlikely(status != CTIO_SUCCESS)) {
2428 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
2432 ha->tgt.tgt_ops->free_cmd(cmd);
2435 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
2440 switch (task_codes) {
2441 case ATIO_SIMPLE_QUEUE:
2442 fcp_task_attr = MSG_SIMPLE_TAG;
2444 case ATIO_HEAD_OF_QUEUE:
2445 fcp_task_attr = MSG_HEAD_TAG;
2447 case ATIO_ORDERED_QUEUE:
2448 fcp_task_attr = MSG_ORDERED_TAG;
2450 case ATIO_ACA_QUEUE:
2451 fcp_task_attr = MSG_ACA_TAG;
2454 fcp_task_attr = MSG_SIMPLE_TAG;
2457 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
2458 "qla_target: unknown task code %x, use ORDERED instead\n",
2460 fcp_task_attr = MSG_ORDERED_TAG;
2464 return fcp_task_attr;
2467 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
2470 * Process context for I/O path into tcm_qla2xxx code
2472 static void qlt_do_work(struct work_struct *work)
2474 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
2475 scsi_qla_host_t *vha = cmd->vha;
2476 struct qla_hw_data *ha = vha->hw;
2477 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2478 struct qla_tgt_sess *sess = NULL;
2479 struct atio_from_isp *atio = &cmd->atio;
2481 unsigned long flags;
2482 uint32_t data_length;
2483 int ret, fcp_task_attr, data_dir, bidi = 0;
2488 spin_lock_irqsave(&ha->hardware_lock, flags);
2489 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
2490 atio->u.isp24.fcp_hdr.s_id);
2491 /* Do kref_get() before dropping qla_hw_data->hardware_lock. */
2493 kref_get(&sess->se_sess->sess_kref);
2494 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2496 if (unlikely(!sess)) {
2497 uint8_t *s_id = atio->u.isp24.fcp_hdr.s_id;
2499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
2500 "qla_target(%d): Unable to find wwn login"
2501 " (s_id %x:%x:%x), trying to create it manually\n",
2502 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
2504 if (atio->u.raw.entry_count > 1) {
2505 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
2506 "Dropping multy entry cmd %p\n", cmd);
2510 mutex_lock(&ha->tgt.tgt_mutex);
2511 sess = qlt_make_local_sess(vha, s_id);
2512 /* sess has an extra creation ref. */
2513 mutex_unlock(&ha->tgt.tgt_mutex);
2520 cmd->loop_id = sess->loop_id;
2521 cmd->conf_compl_supported = sess->conf_compl_supported;
2523 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
2524 cmd->tag = atio->u.isp24.exchange_addr;
2525 cmd->unpacked_lun = scsilun_to_int(
2526 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
2528 if (atio->u.isp24.fcp_cmnd.rddata &&
2529 atio->u.isp24.fcp_cmnd.wrdata) {
2531 data_dir = DMA_TO_DEVICE;
2532 } else if (atio->u.isp24.fcp_cmnd.rddata)
2533 data_dir = DMA_FROM_DEVICE;
2534 else if (atio->u.isp24.fcp_cmnd.wrdata)
2535 data_dir = DMA_TO_DEVICE;
2537 data_dir = DMA_NONE;
2539 fcp_task_attr = qlt_get_fcp_task_attr(vha,
2540 atio->u.isp24.fcp_cmnd.task_attr);
2541 data_length = be32_to_cpu(get_unaligned((uint32_t *)
2542 &atio->u.isp24.fcp_cmnd.add_cdb[
2543 atio->u.isp24.fcp_cmnd.add_cdb_len]));
2545 ql_dbg(ql_dbg_tgt, vha, 0xe022,
2546 "qla_target: START qla command: %p lun: 0x%04x (tag %d)\n",
2547 cmd, cmd->unpacked_lun, cmd->tag);
2549 ret = vha->hw->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
2550 fcp_task_attr, data_dir, bidi);
2554 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
2556 spin_lock_irqsave(&ha->hardware_lock, flags);
2557 ha->tgt.tgt_ops->put_sess(sess);
2558 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2562 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
2564 * cmd has not sent to target yet, so pass NULL as the second
2565 * argument to qlt_send_term_exchange() and free the memory here.
2567 spin_lock_irqsave(&ha->hardware_lock, flags);
2568 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
2569 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2571 ha->tgt.tgt_ops->put_sess(sess);
2572 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2575 /* ha->hardware_lock supposed to be held on entry */
2576 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
2577 struct atio_from_isp *atio)
2579 struct qla_hw_data *ha = vha->hw;
2580 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2581 struct qla_tgt_cmd *cmd;
2583 if (unlikely(tgt->tgt_stop)) {
2584 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
2585 "New command while device %p is shutting down\n", tgt);
2589 cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC);
2591 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
2592 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
2596 INIT_LIST_HEAD(&cmd->cmd_list);
2598 memcpy(&cmd->atio, atio, sizeof(*atio));
2599 cmd->state = QLA_TGT_STATE_NEW;
2600 cmd->tgt = ha->tgt.qla_tgt;
2603 INIT_WORK(&cmd->work, qlt_do_work);
2604 queue_work(qla_tgt_wq, &cmd->work);
2609 /* ha->hardware_lock supposed to be held on entry */
2610 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
2611 int fn, void *iocb, int flags)
2613 struct scsi_qla_host *vha = sess->vha;
2614 struct qla_hw_data *ha = vha->hw;
2615 struct qla_tgt_mgmt_cmd *mcmd;
2619 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2621 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
2622 "qla_target(%d): Allocation of management "
2623 "command failed, some commands and their data could "
2624 "leak\n", vha->vp_idx);
2627 memset(mcmd, 0, sizeof(*mcmd));
2631 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
2632 sizeof(mcmd->orig_iocb.imm_ntfy));
2634 mcmd->tmr_func = fn;
2635 mcmd->flags = flags;
2638 case QLA_TGT_CLEAR_ACA:
2639 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
2640 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
2641 tmr_func = TMR_CLEAR_ACA;
2644 case QLA_TGT_TARGET_RESET:
2645 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
2646 "qla_target(%d): TARGET_RESET received\n",
2648 tmr_func = TMR_TARGET_WARM_RESET;
2651 case QLA_TGT_LUN_RESET:
2652 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
2653 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
2654 tmr_func = TMR_LUN_RESET;
2657 case QLA_TGT_CLEAR_TS:
2658 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
2659 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
2660 tmr_func = TMR_CLEAR_TASK_SET;
2663 case QLA_TGT_ABORT_TS:
2664 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
2665 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
2666 tmr_func = TMR_ABORT_TASK_SET;
2669 case QLA_TGT_ABORT_ALL:
2670 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
2671 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
2676 case QLA_TGT_ABORT_ALL_SESS:
2677 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
2678 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
2683 case QLA_TGT_NEXUS_LOSS_SESS:
2684 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
2685 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
2690 case QLA_TGT_NEXUS_LOSS:
2691 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
2692 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
2697 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
2698 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
2699 sess->vha->vp_idx, fn);
2700 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2704 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
2706 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
2707 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
2708 sess->vha->vp_idx, res);
2709 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2716 /* ha->hardware_lock supposed to be held on entry */
2717 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
2719 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2720 struct qla_hw_data *ha = vha->hw;
2721 struct qla_tgt *tgt;
2722 struct qla_tgt_sess *sess;
2723 uint32_t lun, unpacked_lun;
2726 tgt = ha->tgt.qla_tgt;
2728 lun = a->u.isp24.fcp_cmnd.lun;
2729 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
2730 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
2731 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
2732 a->u.isp24.fcp_hdr.s_id);
2733 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
2736 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
2737 "qla_target(%d): task mgmt fn 0x%x for "
2738 "non-existant session\n", vha->vp_idx, fn);
2739 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
2740 sizeof(struct atio_from_isp));
2743 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
2746 /* ha->hardware_lock supposed to be held on entry */
2747 static int __qlt_abort_task(struct scsi_qla_host *vha,
2748 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
2750 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2751 struct qla_hw_data *ha = vha->hw;
2752 struct qla_tgt_mgmt_cmd *mcmd;
2753 uint32_t lun, unpacked_lun;
2756 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2758 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
2759 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
2760 vha->vp_idx, __func__);
2763 memset(mcmd, 0, sizeof(*mcmd));
2766 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
2767 sizeof(mcmd->orig_iocb.imm_ntfy));
2769 lun = a->u.isp24.fcp_cmnd.lun;
2770 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
2772 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
2773 le16_to_cpu(iocb->u.isp2x.seq_id));
2775 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
2776 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2778 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2785 /* ha->hardware_lock supposed to be held on entry */
2786 static int qlt_abort_task(struct scsi_qla_host *vha,
2787 struct imm_ntfy_from_isp *iocb)
2789 struct qla_hw_data *ha = vha->hw;
2790 struct qla_tgt_sess *sess;
2793 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
2795 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
2797 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
2798 "qla_target(%d): task abort for unexisting "
2799 "session\n", vha->vp_idx);
2800 return qlt_sched_sess_work(ha->tgt.qla_tgt,
2801 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
2804 return __qlt_abort_task(vha, iocb, sess);
2808 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2810 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
2811 struct imm_ntfy_from_isp *iocb)
2813 struct qla_hw_data *ha = vha->hw;
2816 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
2817 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
2818 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2820 switch (iocb->u.isp24.status_subcode) {
2826 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
2831 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2832 if (tgt->link_reinit_iocb_pending) {
2833 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
2835 tgt->link_reinit_iocb_pending = 0;
2837 res = 1; /* send notify ack */
2842 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
2843 "qla_target(%d): Unsupported ELS command %x "
2844 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
2845 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
2852 static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
2854 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
2855 size_t first_offset = 0, rem_offset = offset, tmp = 0;
2856 int i, sg_srr_cnt, bufflen = 0;
2858 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
2859 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
2860 "cmd->sg_cnt: %u, direction: %d\n",
2861 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
2864 * FIXME: Reject non zero SRR relative offset until we can test
2865 * this code properly.
2867 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
2870 if (!cmd->sg || !cmd->sg_cnt) {
2871 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
2872 "Missing cmd->sg or zero cmd->sg_cnt in"
2873 " qla_tgt_set_data_offset\n");
2877 * Walk the current cmd->sg list until we locate the new sg_srr_start
2879 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
2880 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
2881 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
2882 i, sg, sg_page(sg), sg->length, sg->offset);
2884 if ((sg->length + tmp) > offset) {
2885 first_offset = rem_offset;
2887 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
2888 "Found matching sg[%d], using %p as sg_srr_start, "
2889 "and using first_offset: %zu\n", i, sg,
2894 rem_offset -= sg->length;
2897 if (!sg_srr_start) {
2898 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
2899 "Unable to locate sg_srr_start for offset: %u\n", offset);
2902 sg_srr_cnt = (cmd->sg_cnt - i);
2904 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
2906 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
2907 "Unable to allocate sgp\n");
2910 sg_init_table(sg_srr, sg_srr_cnt);
2913 * Walk the remaining list for sg_srr_start, mapping to the newly
2914 * allocated sg_srr taking first_offset into account.
2916 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
2918 sg_set_page(sgp, sg_page(sg),
2919 (sg->length - first_offset), first_offset);
2922 sg_set_page(sgp, sg_page(sg), sg->length, 0);
2924 bufflen += sgp->length;
2932 cmd->sg_cnt = sg_srr_cnt;
2933 cmd->bufflen = bufflen;
2934 cmd->offset += offset;
2937 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
2938 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
2940 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
2942 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
2945 if (cmd->sg_cnt < 0)
2948 if (cmd->bufflen < 0)
2954 static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
2955 uint32_t srr_rel_offs, int *xmit_type)
2957 int res = 0, rel_offs;
2959 rel_offs = srr_rel_offs - cmd->offset;
2960 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
2961 srr_rel_offs, rel_offs);
2963 *xmit_type = QLA_TGT_XMIT_ALL;
2966 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
2967 "qla_target(%d): SRR rel_offs (%d) < 0",
2968 cmd->vha->vp_idx, rel_offs);
2970 } else if (rel_offs == cmd->bufflen)
2971 *xmit_type = QLA_TGT_XMIT_STATUS;
2972 else if (rel_offs > 0)
2973 res = qlt_set_data_offset(cmd, rel_offs);
2978 /* No locks, thread context */
2979 static void qlt_handle_srr(struct scsi_qla_host *vha,
2980 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
2982 struct imm_ntfy_from_isp *ntfy =
2983 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
2984 struct qla_hw_data *ha = vha->hw;
2985 struct qla_tgt_cmd *cmd = sctio->cmd;
2986 struct se_cmd *se_cmd = &cmd->se_cmd;
2987 unsigned long flags;
2988 int xmit_type = 0, resp = 0;
2992 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
2993 srr_ui = ntfy->u.isp24.srr_ui;
2995 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3000 spin_lock_irqsave(&ha->hardware_lock, flags);
3001 qlt_send_notify_ack(vha, ntfy,
3002 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3003 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3004 xmit_type = QLA_TGT_XMIT_STATUS;
3007 case SRR_IU_DATA_IN:
3008 if (!cmd->sg || !cmd->sg_cnt) {
3009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3010 "Unable to process SRR_IU_DATA_IN due to"
3011 " missing cmd->sg, state: %d\n", cmd->state);
3015 if (se_cmd->scsi_status != 0) {
3016 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3017 "Rejecting SRR_IU_DATA_IN with non GOOD "
3021 cmd->bufflen = se_cmd->data_length;
3023 if (qlt_has_data(cmd)) {
3024 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3026 spin_lock_irqsave(&ha->hardware_lock, flags);
3027 qlt_send_notify_ack(vha, ntfy,
3028 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3029 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3032 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3033 "qla_target(%d): SRR for in data for cmd "
3034 "without them (tag %d, SCSI status %d), "
3035 "reject", vha->vp_idx, cmd->tag,
3036 cmd->se_cmd.scsi_status);
3040 case SRR_IU_DATA_OUT:
3041 if (!cmd->sg || !cmd->sg_cnt) {
3042 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3043 "Unable to process SRR_IU_DATA_OUT due to"
3044 " missing cmd->sg\n");
3048 if (se_cmd->scsi_status != 0) {
3049 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3050 "Rejecting SRR_IU_DATA_OUT"
3051 " with non GOOD scsi_status\n");
3054 cmd->bufflen = se_cmd->data_length;
3056 if (qlt_has_data(cmd)) {
3057 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3059 spin_lock_irqsave(&ha->hardware_lock, flags);
3060 qlt_send_notify_ack(vha, ntfy,
3061 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3062 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3063 if (xmit_type & QLA_TGT_XMIT_DATA)
3064 qlt_rdy_to_xfer(cmd);
3066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3067 "qla_target(%d): SRR for out data for cmd "
3068 "without them (tag %d, SCSI status %d), "
3069 "reject", vha->vp_idx, cmd->tag,
3070 cmd->se_cmd.scsi_status);
3075 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3076 "qla_target(%d): Unknown srr_ui value %x",
3077 vha->vp_idx, srr_ui);
3081 /* Transmit response in case of status and data-in cases */
3083 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3088 spin_lock_irqsave(&ha->hardware_lock, flags);
3089 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3090 NOTIFY_ACK_SRR_FLAGS_REJECT,
3091 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3092 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3093 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3094 cmd->state = QLA_TGT_STATE_DATA_IN;
3097 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3098 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3101 static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3102 struct qla_tgt_srr_imm *imm, int ha_locked)
3104 struct qla_hw_data *ha = vha->hw;
3105 unsigned long flags = 0;
3108 spin_lock_irqsave(&ha->hardware_lock, flags);
3110 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3111 NOTIFY_ACK_SRR_FLAGS_REJECT,
3112 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3113 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3116 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3121 static void qlt_handle_srr_work(struct work_struct *work)
3123 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3124 struct scsi_qla_host *vha = tgt->vha;
3125 struct qla_tgt_srr_ctio *sctio;
3126 unsigned long flags;
3128 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3132 spin_lock_irqsave(&tgt->srr_lock, flags);
3133 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3134 struct qla_tgt_srr_imm *imm, *i, *ti;
3135 struct qla_tgt_cmd *cmd;
3136 struct se_cmd *se_cmd;
3139 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3141 if (i->srr_id == sctio->srr_id) {
3142 list_del(&i->srr_list_entry);
3144 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3145 "qla_target(%d): There must be "
3146 "only one IMM SRR per CTIO SRR "
3147 "(IMM SRR %p, id %d, CTIO %p\n",
3148 vha->vp_idx, i, i->srr_id, sctio);
3149 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3155 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3156 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3160 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3161 "Not found matching IMM for SRR CTIO (id %d)\n",
3165 list_del(&sctio->srr_list_entry);
3167 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3171 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3172 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3181 se_cmd = &cmd->se_cmd;
3183 cmd->sg_cnt = se_cmd->t_data_nents;
3184 cmd->sg = se_cmd->t_data_sg;
3186 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3187 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3188 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
3189 se_cmd->t_task_cdb[0], cmd->sg_cnt, cmd->offset);
3191 qlt_handle_srr(vha, sctio, imm);
3197 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3200 /* ha->hardware_lock supposed to be held on entry */
3201 static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3202 struct imm_ntfy_from_isp *iocb)
3204 struct qla_tgt_srr_imm *imm;
3205 struct qla_hw_data *ha = vha->hw;
3206 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3207 struct qla_tgt_srr_ctio *sctio;
3211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
3214 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
3216 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
3218 /* IRQ is already OFF */
3219 spin_lock(&tgt->srr_lock);
3220 imm->srr_id = tgt->imm_srr_id;
3221 list_add_tail(&imm->srr_list_entry,
3222 &tgt->srr_imm_list);
3223 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
3224 "IMM NTFY SRR %p added (id %d, ui %x)\n",
3225 imm, imm->srr_id, iocb->u.isp24.srr_ui);
3226 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3228 list_for_each_entry(sctio, &tgt->srr_ctio_list,
3230 if (sctio->srr_id == imm->srr_id) {
3236 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
3237 "Scheduling srr work\n");
3238 schedule_work(&tgt->srr_work);
3240 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
3241 "qla_target(%d): imm_srr_id "
3242 "== ctio_srr_id (%d), but there is no "
3243 "corresponding SRR CTIO, deleting IMM "
3244 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
3246 list_del(&imm->srr_list_entry);
3250 spin_unlock(&tgt->srr_lock);
3254 spin_unlock(&tgt->srr_lock);
3256 struct qla_tgt_srr_ctio *ts;
3258 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
3259 "qla_target(%d): Unable to allocate SRR IMM "
3260 "entry, SRR request will be rejected\n", vha->vp_idx);
3262 /* IRQ is already OFF */
3263 spin_lock(&tgt->srr_lock);
3264 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
3266 if (sctio->srr_id == tgt->imm_srr_id) {
3267 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
3268 "CTIO SRR %p deleted (id %d)\n",
3269 sctio, sctio->srr_id);
3270 list_del(&sctio->srr_list_entry);
3271 qlt_send_term_exchange(vha, sctio->cmd,
3272 &sctio->cmd->atio, 1);
3276 spin_unlock(&tgt->srr_lock);
3283 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
3284 NOTIFY_ACK_SRR_FLAGS_REJECT,
3285 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3286 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3290 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3292 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
3293 struct imm_ntfy_from_isp *iocb)
3295 struct qla_hw_data *ha = vha->hw;
3296 uint32_t add_flags = 0;
3297 int send_notify_ack = 1;
3300 status = le16_to_cpu(iocb->u.isp2x.status);
3302 case IMM_NTFY_LIP_RESET:
3304 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
3305 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
3306 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
3307 iocb->u.isp24.status_subcode);
3309 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3310 send_notify_ack = 0;
3314 case IMM_NTFY_LIP_LINK_REINIT:
3316 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3317 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
3318 "qla_target(%d): LINK REINIT (loop %#x, "
3319 "subcode %x)\n", vha->vp_idx,
3320 le16_to_cpu(iocb->u.isp24.nport_handle),
3321 iocb->u.isp24.status_subcode);
3322 if (tgt->link_reinit_iocb_pending) {
3323 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3326 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
3327 tgt->link_reinit_iocb_pending = 1;
3329 * QLogic requires to wait after LINK REINIT for possible
3330 * PDISC or ADISC ELS commands
3332 send_notify_ack = 0;
3336 case IMM_NTFY_PORT_LOGOUT:
3337 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
3338 "qla_target(%d): Port logout (loop "
3339 "%#x, subcode %x)\n", vha->vp_idx,
3340 le16_to_cpu(iocb->u.isp24.nport_handle),
3341 iocb->u.isp24.status_subcode);
3343 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
3344 send_notify_ack = 0;
3345 /* The sessions will be cleared in the callback, if needed */
3348 case IMM_NTFY_GLBL_TPRLO:
3349 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
3350 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
3351 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3352 send_notify_ack = 0;
3353 /* The sessions will be cleared in the callback, if needed */
3356 case IMM_NTFY_PORT_CONFIG:
3357 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
3358 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
3360 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3361 send_notify_ack = 0;
3362 /* The sessions will be cleared in the callback, if needed */
3365 case IMM_NTFY_GLBL_LOGO:
3366 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
3367 "qla_target(%d): Link failure detected\n",
3369 /* I_T nexus loss */
3370 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3371 send_notify_ack = 0;
3374 case IMM_NTFY_IOCB_OVERFLOW:
3375 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
3376 "qla_target(%d): Cannot provide requested "
3377 "capability (IOCB overflowed the immediate notify "
3378 "resource count)\n", vha->vp_idx);
3381 case IMM_NTFY_ABORT_TASK:
3382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
3383 "qla_target(%d): Abort Task (S %08x I %#x -> "
3384 "L %#x)\n", vha->vp_idx,
3385 le16_to_cpu(iocb->u.isp2x.seq_id),
3386 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
3387 le16_to_cpu(iocb->u.isp2x.lun));
3388 if (qlt_abort_task(vha, iocb) == 0)
3389 send_notify_ack = 0;
3392 case IMM_NTFY_RESOURCE:
3393 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
3394 "qla_target(%d): Out of resources, host %ld\n",
3395 vha->vp_idx, vha->host_no);
3398 case IMM_NTFY_MSG_RX:
3399 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
3400 "qla_target(%d): Immediate notify task %x\n",
3401 vha->vp_idx, iocb->u.isp2x.task_flags);
3402 if (qlt_handle_task_mgmt(vha, iocb) == 0)
3403 send_notify_ack = 0;
3407 if (qlt_24xx_handle_els(vha, iocb) == 0)
3408 send_notify_ack = 0;
3412 qlt_prepare_srr_imm(vha, iocb);
3413 send_notify_ack = 0;
3417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
3418 "qla_target(%d): Received unknown immediate "
3419 "notify status %x\n", vha->vp_idx, status);
3423 if (send_notify_ack)
3424 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
3428 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3429 * This function sends busy to ISP 2xxx or 24xx.
3431 static void qlt_send_busy(struct scsi_qla_host *vha,
3432 struct atio_from_isp *atio, uint16_t status)
3434 struct ctio7_to_24xx *ctio24;
3435 struct qla_hw_data *ha = vha->hw;
3437 struct qla_tgt_sess *sess = NULL;
3439 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3440 atio->u.isp24.fcp_hdr.s_id);
3442 qlt_send_term_exchange(vha, NULL, atio, 1);
3445 /* Sending marker isn't necessary, since we called from ISR */
3447 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3449 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
3450 "qla_target(%d): %s failed: unable to allocate "
3451 "request packet", vha->vp_idx, __func__);
3455 pkt->entry_count = 1;
3456 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3458 ctio24 = (struct ctio7_to_24xx *)pkt;
3459 ctio24->entry_type = CTIO_TYPE7;
3460 ctio24->nport_handle = sess->loop_id;
3461 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
3462 ctio24->vp_index = vha->vp_idx;
3463 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3464 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3465 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3466 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3467 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
3468 __constant_cpu_to_le16(
3469 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
3470 CTIO7_FLAGS_DONT_RET_CTIO);
3472 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
3473 * if the explicit conformation is used.
3475 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
3476 ctio24->u.status1.scsi_status = cpu_to_le16(status);
3477 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3478 &atio->u.isp24.fcp_cmnd.add_cdb[
3479 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3480 if (ctio24->u.status1.residual != 0)
3481 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3483 qla2x00_start_iocbs(vha, vha->req);
3486 /* ha->hardware_lock supposed to be held on entry */
3487 /* called via callback from qla2xxx */
3488 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
3489 struct atio_from_isp *atio)
3491 struct qla_hw_data *ha = vha->hw;
3492 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3495 if (unlikely(tgt == NULL)) {
3496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
3497 "ATIO pkt, but no tgt (ha %p)", ha);
3500 ql_dbg(ql_dbg_tgt, vha, 0xe02c,
3501 "qla_target(%d): ATIO pkt %p: type %02x count %02x",
3502 vha->vp_idx, atio, atio->u.raw.entry_type,
3503 atio->u.raw.entry_count);
3505 * In tgt_stop mode we also should allow all requests to pass.
3506 * Otherwise, some commands can stuck.
3509 tgt->irq_cmd_count++;
3511 switch (atio->u.raw.entry_type) {
3513 ql_dbg(ql_dbg_tgt, vha, 0xe02d,
3514 "ATIO_TYPE7 instance %d, lun %Lx, read/write %d/%d, "
3515 "add_cdb_len %d, data_length %04x, s_id %x:%x:%x\n",
3516 vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
3517 atio->u.isp24.fcp_cmnd.rddata,
3518 atio->u.isp24.fcp_cmnd.wrdata,
3519 atio->u.isp24.fcp_cmnd.add_cdb_len,
3520 be32_to_cpu(get_unaligned((uint32_t *)
3521 &atio->u.isp24.fcp_cmnd.add_cdb[
3522 atio->u.isp24.fcp_cmnd.add_cdb_len])),
3523 atio->u.isp24.fcp_hdr.s_id[0],
3524 atio->u.isp24.fcp_hdr.s_id[1],
3525 atio->u.isp24.fcp_hdr.s_id[2]);
3527 if (unlikely(atio->u.isp24.exchange_addr ==
3528 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
3529 ql_dbg(ql_dbg_tgt, vha, 0xe058,
3530 "qla_target(%d): ATIO_TYPE7 "
3531 "received with UNKNOWN exchange address, "
3532 "sending QUEUE_FULL\n", vha->vp_idx);
3533 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
3536 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
3537 rc = qlt_handle_cmd_for_atio(vha, atio);
3539 rc = qlt_handle_task_mgmt(vha, atio);
3540 if (unlikely(rc != 0)) {
3542 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
3543 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
3545 qlt_send_term_exchange(vha, NULL, atio, 1);
3548 if (tgt->tgt_stop) {
3549 ql_dbg(ql_dbg_tgt, vha, 0xe059,
3550 "qla_target: Unable to send "
3551 "command to target for req, "
3554 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
3555 "qla_target(%d): Unable to send "
3556 "command to target, sending BUSY "
3557 "status.\n", vha->vp_idx);
3558 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
3564 case IMMED_NOTIFY_TYPE:
3566 if (unlikely(atio->u.isp2x.entry_status != 0)) {
3567 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
3568 "qla_target(%d): Received ATIO packet %x "
3569 "with error status %x\n", vha->vp_idx,
3570 atio->u.raw.entry_type,
3571 atio->u.isp2x.entry_status);
3574 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
3575 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
3580 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
3581 "qla_target(%d): Received unknown ATIO atio "
3582 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
3586 tgt->irq_cmd_count--;
3589 /* ha->hardware_lock supposed to be held on entry */
3590 /* called via callback from qla2xxx */
3591 static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
3593 struct qla_hw_data *ha = vha->hw;
3594 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3596 if (unlikely(tgt == NULL)) {
3597 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
3598 "qla_target(%d): Response pkt %x received, but no "
3599 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
3603 ql_dbg(ql_dbg_tgt, vha, 0xe02f,
3604 "qla_target(%d): response pkt %p: T %02x C %02x S %02x "
3605 "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
3606 pkt->entry_count, pkt->entry_status, pkt->handle);
3609 * In tgt_stop mode we also should allow all requests to pass.
3610 * Otherwise, some commands can stuck.
3613 tgt->irq_cmd_count++;
3615 switch (pkt->entry_type) {
3618 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
3619 ql_dbg(ql_dbg_tgt, vha, 0xe030, "CTIO_TYPE7: instance %d\n",
3621 qlt_do_ctio_completion(vha, entry->handle,
3622 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
3627 case ACCEPT_TGT_IO_TYPE:
3629 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
3631 ql_dbg(ql_dbg_tgt, vha, 0xe031,
3632 "ACCEPT_TGT_IO instance %d status %04x "
3633 "lun %04x read/write %d data_length %04x "
3634 "target_id %02x rx_id %04x\n ", vha->vp_idx,
3635 le16_to_cpu(atio->u.isp2x.status),
3636 le16_to_cpu(atio->u.isp2x.lun),
3637 atio->u.isp2x.execution_codes,
3638 le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
3639 atio), atio->u.isp2x.rx_id);
3640 if (atio->u.isp2x.status !=
3641 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
3642 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
3643 "qla_target(%d): ATIO with error "
3644 "status %x received\n", vha->vp_idx,
3645 le16_to_cpu(atio->u.isp2x.status));
3648 ql_dbg(ql_dbg_tgt, vha, 0xe032,
3649 "FCP CDB: 0x%02x, sizeof(cdb): %lu",
3650 atio->u.isp2x.cdb[0], (unsigned long
3651 int)sizeof(atio->u.isp2x.cdb));
3653 rc = qlt_handle_cmd_for_atio(vha, atio);
3654 if (unlikely(rc != 0)) {
3656 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
3657 qlt_send_busy(vha, atio, 0);
3659 qlt_send_term_exchange(vha, NULL, atio, 1);
3662 if (tgt->tgt_stop) {
3663 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
3664 "qla_target: Unable to send "
3665 "command to target, sending TERM "
3666 "EXCHANGE for rsp\n");
3667 qlt_send_term_exchange(vha, NULL,
3670 ql_dbg(ql_dbg_tgt, vha, 0xe060,
3671 "qla_target(%d): Unable to send "
3672 "command to target, sending BUSY "
3673 "status\n", vha->vp_idx);
3674 qlt_send_busy(vha, atio, 0);
3681 case CONTINUE_TGT_IO_TYPE:
3683 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
3684 ql_dbg(ql_dbg_tgt, vha, 0xe033,
3685 "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
3686 qlt_do_ctio_completion(vha, entry->handle,
3687 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
3694 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
3695 ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
3697 qlt_do_ctio_completion(vha, entry->handle,
3698 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
3703 case IMMED_NOTIFY_TYPE:
3704 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
3705 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
3708 case NOTIFY_ACK_TYPE:
3709 if (tgt->notify_ack_expected > 0) {
3710 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
3711 ql_dbg(ql_dbg_tgt, vha, 0xe036,
3712 "NOTIFY_ACK seq %08x status %x\n",
3713 le16_to_cpu(entry->u.isp2x.seq_id),
3714 le16_to_cpu(entry->u.isp2x.status));
3715 tgt->notify_ack_expected--;
3716 if (entry->u.isp2x.status !=
3717 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
3718 ql_dbg(ql_dbg_tgt, vha, 0xe061,
3719 "qla_target(%d): NOTIFY_ACK "
3720 "failed %x\n", vha->vp_idx,
3721 le16_to_cpu(entry->u.isp2x.status));
3724 ql_dbg(ql_dbg_tgt, vha, 0xe062,
3725 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
3730 case ABTS_RECV_24XX:
3731 ql_dbg(ql_dbg_tgt, vha, 0xe037,
3732 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
3733 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
3736 case ABTS_RESP_24XX:
3737 if (tgt->abts_resp_expected > 0) {
3738 struct abts_resp_from_24xx_fw *entry =
3739 (struct abts_resp_from_24xx_fw *)pkt;
3740 ql_dbg(ql_dbg_tgt, vha, 0xe038,
3741 "ABTS_RESP_24XX: compl_status %x\n",
3742 entry->compl_status);
3743 tgt->abts_resp_expected--;
3744 if (le16_to_cpu(entry->compl_status) !=
3745 ABTS_RESP_COMPL_SUCCESS) {
3746 if ((entry->error_subcode1 == 0x1E) &&
3747 (entry->error_subcode2 == 0)) {
3749 * We've got a race here: aborted
3750 * exchange not terminated, i.e.
3751 * response for the aborted command was
3752 * sent between the abort request was
3753 * received and processed.
3754 * Unfortunately, the firmware has a
3755 * silly requirement that all aborted
3756 * exchanges must be explicitely
3757 * terminated, otherwise it refuses to
3758 * send responses for the abort
3759 * requests. So, we have to
3760 * (re)terminate the exchange and retry
3761 * the abort response.
3763 qlt_24xx_retry_term_exchange(vha,
3766 ql_dbg(ql_dbg_tgt, vha, 0xe063,
3767 "qla_target(%d): ABTS_RESP_24XX "
3768 "failed %x (subcode %x:%x)",
3769 vha->vp_idx, entry->compl_status,
3770 entry->error_subcode1,
3771 entry->error_subcode2);
3774 ql_dbg(ql_dbg_tgt, vha, 0xe064,
3775 "qla_target(%d): Unexpected ABTS_RESP_24XX "
3776 "received\n", vha->vp_idx);
3781 ql_dbg(ql_dbg_tgt, vha, 0xe065,
3782 "qla_target(%d): Received unknown response pkt "
3783 "type %x\n", vha->vp_idx, pkt->entry_type);
3787 tgt->irq_cmd_count--;
3791 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3793 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
3796 struct qla_hw_data *ha = vha->hw;
3797 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3800 ql_dbg(ql_dbg_tgt, vha, 0xe039,
3801 "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
3802 vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
3803 ha->operating_mode, ha->current_topology);
3805 if (!ha->tgt.tgt_ops)
3808 if (unlikely(tgt == NULL)) {
3809 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
3810 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
3814 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
3818 * In tgt_stop mode we also should allow all requests to pass.
3819 * Otherwise, some commands can stuck.
3822 tgt->irq_cmd_count++;
3825 case MBA_RESET: /* Reset */
3826 case MBA_SYSTEM_ERR: /* System Error */
3827 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
3828 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
3829 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
3830 "qla_target(%d): System error async event %#x "
3831 "occurred", vha->vp_idx, code);
3833 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
3834 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3839 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
3840 "qla_target(%d): Async LOOP_UP occurred "
3841 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
3842 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
3843 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
3844 if (tgt->link_reinit_iocb_pending) {
3845 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
3847 tgt->link_reinit_iocb_pending = 0;
3852 case MBA_LIP_OCCURRED:
3855 case MBA_RSCN_UPDATE:
3856 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
3857 "qla_target(%d): Async event %#x occurred "
3858 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
3859 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
3860 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
3863 case MBA_PORT_UPDATE:
3864 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
3865 "qla_target(%d): Port update async event %#x "
3866 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
3867 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
3868 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
3869 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
3871 login_code = le16_to_cpu(mailbox[2]);
3872 if (login_code == 0x4)
3873 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
3874 "Async MB 2: Got PLOGI Complete\n");
3875 else if (login_code == 0x7)
3876 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
3877 "Async MB 2: Port Logged Out\n");
3881 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
3882 "qla_target(%d): Async event %#x occurred: "
3883 "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
3884 code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
3885 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
3889 tgt->irq_cmd_count--;
3892 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
3898 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
3900 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
3901 "qla_target(%d): Allocation of tmp FC port failed",
3906 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
3908 fcport->loop_id = loop_id;
3910 rc = qla2x00_get_port_database(vha, fcport, 0);
3911 if (rc != QLA_SUCCESS) {
3912 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
3913 "qla_target(%d): Failed to retrieve fcport "
3914 "information -- get_port_database() returned %x "
3915 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
3923 /* Must be called under tgt_mutex */
3924 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
3927 struct qla_hw_data *ha = vha->hw;
3928 struct qla_tgt_sess *sess = NULL;
3929 fc_port_t *fcport = NULL;
3930 int rc, global_resets;
3931 uint16_t loop_id = 0;
3934 global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count);
3936 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
3938 if ((s_id[0] == 0xFF) &&
3939 (s_id[1] == 0xFC)) {
3941 * This is Domain Controller, so it should be
3942 * OK to drop SCSI commands from it.
3944 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
3945 "Unable to find initiator with S_ID %x:%x:%x",
3946 s_id[0], s_id[1], s_id[2]);
3948 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
3949 "qla_target(%d): Unable to find "
3950 "initiator with S_ID %x:%x:%x",
3951 vha->vp_idx, s_id[0], s_id[1],
3956 fcport = qlt_get_port_database(vha, loop_id);
3960 if (global_resets !=
3961 atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) {
3962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
3963 "qla_target(%d): global reset during session discovery "
3964 "(counter was %d, new %d), retrying", vha->vp_idx,
3966 atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count));
3970 sess = qlt_create_sess(vha, fcport, true);
3976 static void qlt_abort_work(struct qla_tgt *tgt,
3977 struct qla_tgt_sess_work_param *prm)
3979 struct scsi_qla_host *vha = tgt->vha;
3980 struct qla_hw_data *ha = vha->hw;
3981 struct qla_tgt_sess *sess = NULL;
3982 unsigned long flags;
3987 spin_lock_irqsave(&ha->hardware_lock, flags);
3992 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
3993 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
3994 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
3996 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3997 (unsigned char *)&be_s_id);
3999 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4001 mutex_lock(&ha->tgt.tgt_mutex);
4002 sess = qlt_make_local_sess(vha, s_id);
4003 /* sess has got an extra creation ref */
4004 mutex_unlock(&ha->tgt.tgt_mutex);
4006 spin_lock_irqsave(&ha->hardware_lock, flags);
4010 kref_get(&sess->se_sess->sess_kref);
4016 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4020 ha->tgt.tgt_ops->put_sess(sess);
4021 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4025 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
4027 ha->tgt.tgt_ops->put_sess(sess);
4028 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4031 static void qlt_tmr_work(struct qla_tgt *tgt,
4032 struct qla_tgt_sess_work_param *prm)
4034 struct atio_from_isp *a = &prm->tm_iocb2;
4035 struct scsi_qla_host *vha = tgt->vha;
4036 struct qla_hw_data *ha = vha->hw;
4037 struct qla_tgt_sess *sess = NULL;
4038 unsigned long flags;
4039 uint8_t *s_id = NULL; /* to hide compiler warnings */
4041 uint32_t lun, unpacked_lun;
4045 spin_lock_irqsave(&ha->hardware_lock, flags);
4050 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4051 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4053 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4055 mutex_lock(&ha->tgt.tgt_mutex);
4056 sess = qlt_make_local_sess(vha, s_id);
4057 /* sess has got an extra creation ref */
4058 mutex_unlock(&ha->tgt.tgt_mutex);
4060 spin_lock_irqsave(&ha->hardware_lock, flags);
4064 kref_get(&sess->se_sess->sess_kref);
4068 lun = a->u.isp24.fcp_cmnd.lun;
4069 lun_size = sizeof(lun);
4070 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4071 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4073 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4077 ha->tgt.tgt_ops->put_sess(sess);
4078 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4082 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
4084 ha->tgt.tgt_ops->put_sess(sess);
4085 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4088 static void qlt_sess_work_fn(struct work_struct *work)
4090 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4091 struct scsi_qla_host *vha = tgt->vha;
4092 unsigned long flags;
4094 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4096 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4097 while (!list_empty(&tgt->sess_works_list)) {
4098 struct qla_tgt_sess_work_param *prm = list_entry(
4099 tgt->sess_works_list.next, typeof(*prm),
4100 sess_works_list_entry);
4103 * This work can be scheduled on several CPUs at time, so we
4104 * must delete the entry to eliminate double processing
4106 list_del(&prm->sess_works_list_entry);
4108 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4110 switch (prm->type) {
4111 case QLA_TGT_SESS_WORK_ABORT:
4112 qlt_abort_work(tgt, prm);
4114 case QLA_TGT_SESS_WORK_TM:
4115 qlt_tmr_work(tgt, prm);
4122 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4126 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4129 /* Must be called under tgt_host_action_mutex */
4130 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4132 struct qla_tgt *tgt;
4134 if (!QLA_TGT_MODE_ENABLED())
4137 if (!IS_TGT_MODE_CAPABLE(ha)) {
4138 ql_log(ql_log_warn, base_vha, 0xe070,
4139 "This adapter does not support target mode.\n");
4143 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
4144 "Registering target for host %ld(%p)", base_vha->host_no, ha);
4146 BUG_ON((ha->tgt.qla_tgt != NULL) || (ha->tgt.tgt_ops != NULL));
4148 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4150 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4151 "Unable to allocate struct qla_tgt\n");
4155 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4156 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4159 tgt->vha = base_vha;
4160 init_waitqueue_head(&tgt->waitQ);
4161 INIT_LIST_HEAD(&tgt->sess_list);
4162 INIT_LIST_HEAD(&tgt->del_sess_list);
4163 INIT_DELAYED_WORK(&tgt->sess_del_work,
4164 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4165 spin_lock_init(&tgt->sess_work_lock);
4166 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4167 INIT_LIST_HEAD(&tgt->sess_works_list);
4168 spin_lock_init(&tgt->srr_lock);
4169 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4170 INIT_LIST_HEAD(&tgt->srr_imm_list);
4171 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4172 atomic_set(&tgt->tgt_global_resets_count, 0);
4174 ha->tgt.qla_tgt = tgt;
4176 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4177 "qla_target(%d): using 64 Bit PCI addressing",
4179 tgt->tgt_enable_64bit_addr = 1;
4181 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4182 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4183 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4185 mutex_lock(&qla_tgt_mutex);
4186 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4187 mutex_unlock(&qla_tgt_mutex);
4192 /* Must be called under tgt_host_action_mutex */
4193 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4195 if (!ha->tgt.qla_tgt)
4198 mutex_lock(&qla_tgt_mutex);
4199 list_del(&ha->tgt.qla_tgt->tgt_list_entry);
4200 mutex_unlock(&qla_tgt_mutex);
4202 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4204 qlt_release(ha->tgt.qla_tgt);
4209 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4214 pr_debug("qla2xxx HW vha->node_name: ");
4215 for (i = 0; i < WWN_SIZE; i++)
4216 pr_debug("%02x ", vha->node_name[i]);
4218 pr_debug("qla2xxx HW vha->port_name: ");
4219 for (i = 0; i < WWN_SIZE; i++)
4220 pr_debug("%02x ", vha->port_name[i]);
4223 pr_debug("qla2xxx passed configfs WWPN: ");
4224 put_unaligned_be64(wwpn, b);
4225 for (i = 0; i < WWN_SIZE; i++)
4226 pr_debug("%02x ", b[i]);
4231 * qla_tgt_lport_register - register lport with external module
4233 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4234 * @wwpn: Passwd FC target WWPN
4235 * @callback: lport initialization callback for tcm_qla2xxx code
4236 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4238 int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
4239 int (*callback)(struct scsi_qla_host *), void *target_lport_ptr)
4241 struct qla_tgt *tgt;
4242 struct scsi_qla_host *vha;
4243 struct qla_hw_data *ha;
4244 struct Scsi_Host *host;
4245 unsigned long flags;
4249 mutex_lock(&qla_tgt_mutex);
4250 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4258 if (ha->tgt.tgt_ops != NULL)
4261 if (!(host->hostt->supported_mode & MODE_TARGET))
4264 spin_lock_irqsave(&ha->hardware_lock, flags);
4265 if (host->active_mode & MODE_TARGET) {
4266 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4268 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4271 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4273 if (!scsi_host_get(host)) {
4274 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4275 "Unable to scsi_host_get() for"
4276 " qla2xxx scsi_host\n");
4279 qlt_lport_dump(vha, wwpn, b);
4281 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4282 scsi_host_put(host);
4286 * Setup passed parameters ahead of invoking callback
4288 ha->tgt.tgt_ops = qla_tgt_ops;
4289 ha->tgt.target_lport_ptr = target_lport_ptr;
4290 rc = (*callback)(vha);
4292 ha->tgt.tgt_ops = NULL;
4293 ha->tgt.target_lport_ptr = NULL;
4294 scsi_host_put(host);
4296 mutex_unlock(&qla_tgt_mutex);
4299 mutex_unlock(&qla_tgt_mutex);
4303 EXPORT_SYMBOL(qlt_lport_register);
4306 * qla_tgt_lport_deregister - Degister lport
4308 * @vha: Registered scsi_qla_host pointer
4310 void qlt_lport_deregister(struct scsi_qla_host *vha)
4312 struct qla_hw_data *ha = vha->hw;
4313 struct Scsi_Host *sh = vha->host;
4315 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
4317 ha->tgt.target_lport_ptr = NULL;
4318 ha->tgt.tgt_ops = NULL;
4320 * Release the Scsi_Host reference for the underlying qla2xxx host
4324 EXPORT_SYMBOL(qlt_lport_deregister);
4326 /* Must be called under HW lock */
4327 void qlt_set_mode(struct scsi_qla_host *vha)
4329 struct qla_hw_data *ha = vha->hw;
4331 switch (ql2x_ini_mode) {
4332 case QLA2XXX_INI_MODE_DISABLED:
4333 case QLA2XXX_INI_MODE_EXCLUSIVE:
4334 vha->host->active_mode = MODE_TARGET;
4336 case QLA2XXX_INI_MODE_ENABLED:
4337 vha->host->active_mode |= MODE_TARGET;
4343 if (ha->tgt.ini_mode_force_reverse)
4344 qla_reverse_ini_mode(vha);
4347 /* Must be called under HW lock */
4348 void qlt_clear_mode(struct scsi_qla_host *vha)
4350 struct qla_hw_data *ha = vha->hw;
4352 switch (ql2x_ini_mode) {
4353 case QLA2XXX_INI_MODE_DISABLED:
4354 vha->host->active_mode = MODE_UNKNOWN;
4356 case QLA2XXX_INI_MODE_EXCLUSIVE:
4357 vha->host->active_mode = MODE_INITIATOR;
4359 case QLA2XXX_INI_MODE_ENABLED:
4360 vha->host->active_mode &= ~MODE_TARGET;
4366 if (ha->tgt.ini_mode_force_reverse)
4367 qla_reverse_ini_mode(vha);
4371 * qla_tgt_enable_vha - NO LOCK HELD
4373 * host_reset, bring up w/ Target Mode Enabled
4376 qlt_enable_vha(struct scsi_qla_host *vha)
4378 struct qla_hw_data *ha = vha->hw;
4379 struct qla_tgt *tgt = ha->tgt.qla_tgt;
4380 unsigned long flags;
4383 ql_dbg(ql_dbg_tgt, vha, 0xe069,
4384 "Unable to locate qla_tgt pointer from"
4385 " struct qla_hw_data\n");
4390 spin_lock_irqsave(&ha->hardware_lock, flags);
4391 tgt->tgt_stopped = 0;
4393 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4395 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4396 qla2xxx_wake_dpc(vha);
4397 qla2x00_wait_for_hba_online(vha);
4399 EXPORT_SYMBOL(qlt_enable_vha);
4402 * qla_tgt_disable_vha - NO LOCK HELD
4404 * Disable Target Mode and reset the adapter
4407 qlt_disable_vha(struct scsi_qla_host *vha)
4409 struct qla_hw_data *ha = vha->hw;
4410 struct qla_tgt *tgt = ha->tgt.qla_tgt;
4411 unsigned long flags;
4414 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
4415 "Unable to locate qla_tgt pointer from"
4416 " struct qla_hw_data\n");
4421 spin_lock_irqsave(&ha->hardware_lock, flags);
4422 qlt_clear_mode(vha);
4423 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4425 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4426 qla2xxx_wake_dpc(vha);
4427 qla2x00_wait_for_hba_online(vha);
4431 * Called from qla_init.c:qla24xx_vport_create() contex to setup
4432 * the target mode specific struct scsi_qla_host and struct qla_hw_data
4436 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
4438 if (!qla_tgt_mode_enabled(vha))
4441 mutex_init(&ha->tgt.tgt_mutex);
4442 mutex_init(&ha->tgt.tgt_host_action_mutex);
4444 qlt_clear_mode(vha);
4447 * NOTE: Currently the value is kept the same for <24xx and
4448 * >=24xx ISPs. If it is necessary to change it,
4449 * the check should be added for specific ISPs,
4450 * assigning the value appropriately.
4452 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
4456 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
4459 * FC-4 Feature bit 0 indicates target functionality to the name server.
4461 if (qla_tgt_mode_enabled(vha)) {
4462 if (qla_ini_mode_enabled(vha))
4463 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
4465 ct_req->req.rff_id.fc4_feature = BIT_0;
4466 } else if (qla_ini_mode_enabled(vha)) {
4467 ct_req->req.rff_id.fc4_feature = BIT_1;
4472 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
4475 * Beginning of ATIO ring has initialization control block already built
4476 * by nvram config routine.
4478 * Returns 0 on success.
4481 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
4483 struct qla_hw_data *ha = vha->hw;
4485 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
4487 if (!qla_tgt_mode_enabled(vha))
4490 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
4491 pkt->u.raw.signature = ATIO_PROCESSED;
4498 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
4499 * @ha: SCSI driver HA context
4502 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
4504 struct qla_hw_data *ha = vha->hw;
4505 struct atio_from_isp *pkt;
4508 if (!vha->flags.online)
4511 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
4512 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
4513 cnt = pkt->u.raw.entry_count;
4515 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
4517 for (i = 0; i < cnt; i++) {
4518 ha->tgt.atio_ring_index++;
4519 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
4520 ha->tgt.atio_ring_index = 0;
4521 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
4523 ha->tgt.atio_ring_ptr++;
4525 pkt->u.raw.signature = ATIO_PROCESSED;
4526 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
4531 /* Adjust ring index */
4532 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
4536 qlt_24xx_config_rings(struct scsi_qla_host *vha)
4538 struct qla_hw_data *ha = vha->hw;
4539 if (!QLA_TGT_MODE_ENABLED())
4542 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
4543 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
4544 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
4546 if (IS_ATIO_MSIX_CAPABLE(ha)) {
4547 struct qla_msix_entry *msix = &ha->msix_entries[2];
4548 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
4550 icb->msix_atio = cpu_to_le16(msix->entry);
4551 ql_dbg(ql_dbg_init, vha, 0xf072,
4552 "Registering ICB vector 0x%x for atio que.\n",
4558 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
4560 struct qla_hw_data *ha = vha->hw;
4562 if (qla_tgt_mode_enabled(vha)) {
4563 if (!ha->tgt.saved_set) {
4564 /* We save only once */
4565 ha->tgt.saved_exchange_count = nv->exchange_count;
4566 ha->tgt.saved_firmware_options_1 =
4567 nv->firmware_options_1;
4568 ha->tgt.saved_firmware_options_2 =
4569 nv->firmware_options_2;
4570 ha->tgt.saved_firmware_options_3 =
4571 nv->firmware_options_3;
4572 ha->tgt.saved_set = 1;
4575 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
4577 /* Enable target mode */
4578 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
4580 /* Disable ini mode, if requested */
4581 if (!qla_ini_mode_enabled(vha))
4582 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
4584 /* Disable Full Login after LIP */
4585 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
4586 /* Enable initial LIP */
4587 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
4588 /* Enable FC tapes support */
4589 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
4590 /* Disable Full Login after LIP */
4591 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
4592 /* Enable target PRLI control */
4593 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
4595 if (ha->tgt.saved_set) {
4596 nv->exchange_count = ha->tgt.saved_exchange_count;
4597 nv->firmware_options_1 =
4598 ha->tgt.saved_firmware_options_1;
4599 nv->firmware_options_2 =
4600 ha->tgt.saved_firmware_options_2;
4601 nv->firmware_options_3 =
4602 ha->tgt.saved_firmware_options_3;
4607 /* out-of-order frames reassembly */
4608 nv->firmware_options_3 |= BIT_6|BIT_9;
4610 if (ha->tgt.enable_class_2) {
4611 if (vha->flags.init_done)
4612 fc_host_supported_classes(vha->host) =
4613 FC_COS_CLASS2 | FC_COS_CLASS3;
4615 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
4617 if (vha->flags.init_done)
4618 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
4620 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
4625 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
4626 struct init_cb_24xx *icb)
4628 struct qla_hw_data *ha = vha->hw;
4630 if (ha->tgt.node_name_set) {
4631 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
4632 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
4637 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
4639 struct qla_hw_data *ha = vha->hw;
4641 if (!QLA_TGT_MODE_ENABLED())
4644 if (qla_tgt_mode_enabled(vha)) {
4645 if (!ha->tgt.saved_set) {
4646 /* We save only once */
4647 ha->tgt.saved_exchange_count = nv->exchange_count;
4648 ha->tgt.saved_firmware_options_1 =
4649 nv->firmware_options_1;
4650 ha->tgt.saved_firmware_options_2 =
4651 nv->firmware_options_2;
4652 ha->tgt.saved_firmware_options_3 =
4653 nv->firmware_options_3;
4654 ha->tgt.saved_set = 1;
4657 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
4659 /* Enable target mode */
4660 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
4662 /* Disable ini mode, if requested */
4663 if (!qla_ini_mode_enabled(vha))
4664 nv->firmware_options_1 |=
4665 __constant_cpu_to_le32(BIT_5);
4667 /* Disable Full Login after LIP */
4668 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
4669 /* Enable initial LIP */
4670 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
4671 /* Enable FC tapes support */
4672 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
4673 /* Disable Full Login after LIP */
4674 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
4675 /* Enable target PRLI control */
4676 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
4678 if (ha->tgt.saved_set) {
4679 nv->exchange_count = ha->tgt.saved_exchange_count;
4680 nv->firmware_options_1 =
4681 ha->tgt.saved_firmware_options_1;
4682 nv->firmware_options_2 =
4683 ha->tgt.saved_firmware_options_2;
4684 nv->firmware_options_3 =
4685 ha->tgt.saved_firmware_options_3;
4690 /* out-of-order frames reassembly */
4691 nv->firmware_options_3 |= BIT_6|BIT_9;
4693 if (ha->tgt.enable_class_2) {
4694 if (vha->flags.init_done)
4695 fc_host_supported_classes(vha->host) =
4696 FC_COS_CLASS2 | FC_COS_CLASS3;
4698 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
4700 if (vha->flags.init_done)
4701 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
4703 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
4708 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
4709 struct init_cb_81xx *icb)
4711 struct qla_hw_data *ha = vha->hw;
4713 if (!QLA_TGT_MODE_ENABLED())
4716 if (ha->tgt.node_name_set) {
4717 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
4718 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
4723 qlt_83xx_iospace_config(struct qla_hw_data *ha)
4725 if (!QLA_TGT_MODE_ENABLED())
4728 ha->msix_count += 1; /* For ATIO Q */
4732 qlt_24xx_process_response_error(struct scsi_qla_host *vha,
4733 struct sts_entry_24xx *pkt)
4735 switch (pkt->entry_type) {
4736 case ABTS_RECV_24XX:
4737 case ABTS_RESP_24XX:
4739 case NOTIFY_ACK_TYPE:
4747 qlt_modify_vp_config(struct scsi_qla_host *vha,
4748 struct vp_config_entry_24xx *vpmod)
4750 if (qla_tgt_mode_enabled(vha))
4751 vpmod->options_idx1 &= ~BIT_5;
4752 /* Disable ini mode, if requested */
4753 if (!qla_ini_mode_enabled(vha))
4754 vpmod->options_idx1 &= ~BIT_4;
4758 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
4760 if (!QLA_TGT_MODE_ENABLED())
4763 if (ha->mqenable || IS_QLA83XX(ha)) {
4764 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
4765 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
4767 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
4768 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
4771 mutex_init(&ha->tgt.tgt_mutex);
4772 mutex_init(&ha->tgt.tgt_host_action_mutex);
4773 qlt_clear_mode(base_vha);
4777 qla83xx_msix_atio_q(int irq, void *dev_id)
4779 struct rsp_que *rsp;
4780 scsi_qla_host_t *vha;
4781 struct qla_hw_data *ha;
4782 unsigned long flags;
4784 rsp = (struct rsp_que *) dev_id;
4786 vha = pci_get_drvdata(ha->pdev);
4788 spin_lock_irqsave(&ha->hardware_lock, flags);
4790 qlt_24xx_process_atio_queue(vha);
4791 qla24xx_process_response_queue(vha, rsp);
4793 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4799 qlt_mem_alloc(struct qla_hw_data *ha)
4801 if (!QLA_TGT_MODE_ENABLED())
4804 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
4805 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
4806 if (!ha->tgt.tgt_vp_map)
4809 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
4810 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
4811 &ha->tgt.atio_dma, GFP_KERNEL);
4812 if (!ha->tgt.atio_ring) {
4813 kfree(ha->tgt.tgt_vp_map);
4820 qlt_mem_free(struct qla_hw_data *ha)
4822 if (!QLA_TGT_MODE_ENABLED())
4825 if (ha->tgt.atio_ring) {
4826 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
4827 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
4830 kfree(ha->tgt.tgt_vp_map);
4833 /* vport_slock to be held by the caller */
4835 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
4837 if (!QLA_TGT_MODE_ENABLED())
4842 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
4845 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
4848 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
4851 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
4856 static int __init qlt_parse_ini_mode(void)
4858 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
4859 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
4860 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
4861 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
4862 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
4863 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
4870 int __init qlt_init(void)
4874 if (!qlt_parse_ini_mode()) {
4875 ql_log(ql_log_fatal, NULL, 0xe06b,
4876 "qlt_parse_ini_mode() failed\n");
4880 if (!QLA_TGT_MODE_ENABLED())
4883 qla_tgt_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep",
4884 sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd), 0,
4886 if (!qla_tgt_cmd_cachep) {
4887 ql_log(ql_log_fatal, NULL, 0xe06c,
4888 "kmem_cache_create for qla_tgt_cmd_cachep failed\n");
4892 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
4893 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
4894 qla_tgt_mgmt_cmd), 0, NULL);
4895 if (!qla_tgt_mgmt_cmd_cachep) {
4896 ql_log(ql_log_fatal, NULL, 0xe06d,
4897 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
4902 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
4903 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
4904 if (!qla_tgt_mgmt_cmd_mempool) {
4905 ql_log(ql_log_fatal, NULL, 0xe06e,
4906 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
4908 goto out_mgmt_cmd_cachep;
4911 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
4913 ql_log(ql_log_fatal, NULL, 0xe06f,
4914 "alloc_workqueue for qla_tgt_wq failed\n");
4916 goto out_cmd_mempool;
4919 * Return 1 to signal that initiator-mode is being disabled
4921 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
4924 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
4925 out_mgmt_cmd_cachep:
4926 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
4928 kmem_cache_destroy(qla_tgt_cmd_cachep);
4934 if (!QLA_TGT_MODE_ENABLED())
4937 destroy_workqueue(qla_tgt_wq);
4938 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
4939 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
4940 kmem_cache_destroy(qla_tgt_cmd_cachep);