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, &vha->vha_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 = vha->vha_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, vha->vha_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, &vha->vha_tgt.qla_tgt->sess_list);
666 vha->vha_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 = vha->vha_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 if (qla_ini_mode_enabled(vha))
698 spin_lock_irqsave(&ha->hardware_lock, flags);
700 spin_unlock_irqrestore(&ha->hardware_lock, flags);
703 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
705 spin_unlock_irqrestore(&ha->hardware_lock, flags);
707 mutex_lock(&vha->vha_tgt.tgt_mutex);
708 sess = qlt_create_sess(vha, fcport, false);
709 mutex_unlock(&vha->vha_tgt.tgt_mutex);
711 spin_lock_irqsave(&ha->hardware_lock, flags);
713 kref_get(&sess->se_sess->sess_kref);
716 qlt_undelete_sess(sess);
718 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
719 "qla_target(%u): %ssession for port %8phC "
720 "(loop ID %d) reappeared\n", vha->vp_idx,
721 sess->local ? "local " : "", sess->port_name,
724 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
725 "Reappeared sess %p\n", sess);
727 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
728 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
731 if (sess && sess->local) {
732 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
733 "qla_target(%u): local session for "
734 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
735 fcport->port_name, sess->loop_id);
738 ha->tgt.tgt_ops->put_sess(sess);
739 spin_unlock_irqrestore(&ha->hardware_lock, flags);
742 void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
744 struct qla_hw_data *ha = vha->hw;
745 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
746 struct qla_tgt_sess *sess;
749 if (!vha->hw->tgt.tgt_ops)
752 if (!tgt || (fcport->port_type != FCT_INITIATOR))
755 spin_lock_irqsave(&ha->hardware_lock, flags);
757 spin_unlock_irqrestore(&ha->hardware_lock, flags);
760 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
762 spin_unlock_irqrestore(&ha->hardware_lock, flags);
766 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
769 qlt_schedule_sess_for_deletion(sess, false);
770 spin_unlock_irqrestore(&ha->hardware_lock, flags);
773 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
775 struct qla_hw_data *ha = tgt->ha;
779 * We need to protect against race, when tgt is freed before or
782 spin_lock_irqsave(&ha->hardware_lock, flags);
783 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
784 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
785 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
786 res = (tgt->sess_count == 0);
787 spin_unlock_irqrestore(&ha->hardware_lock, flags);
792 /* Called by tcm_qla2xxx configfs code */
793 void qlt_stop_phase1(struct qla_tgt *tgt)
795 struct scsi_qla_host *vha = tgt->vha;
796 struct qla_hw_data *ha = tgt->ha;
799 if (tgt->tgt_stop || tgt->tgt_stopped) {
800 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
801 "Already in tgt->tgt_stop or tgt_stopped state\n");
806 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
809 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
810 * Lock is needed, because we still can get an incoming packet.
812 mutex_lock(&vha->vha_tgt.tgt_mutex);
813 spin_lock_irqsave(&ha->hardware_lock, flags);
815 qlt_clear_tgt_db(tgt, true);
816 spin_unlock_irqrestore(&ha->hardware_lock, flags);
817 mutex_unlock(&vha->vha_tgt.tgt_mutex);
819 flush_delayed_work(&tgt->sess_del_work);
821 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
822 "Waiting for sess works (tgt %p)", tgt);
823 spin_lock_irqsave(&tgt->sess_work_lock, flags);
824 while (!list_empty(&tgt->sess_works_list)) {
825 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
826 flush_scheduled_work();
827 spin_lock_irqsave(&tgt->sess_work_lock, flags);
829 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
831 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
832 "Waiting for tgt %p: list_empty(sess_list)=%d "
833 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
836 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
839 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
840 qlt_disable_vha(vha);
842 /* Wait for sessions to clear out (just in case) */
843 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
845 EXPORT_SYMBOL(qlt_stop_phase1);
847 /* Called by tcm_qla2xxx configfs code */
848 void qlt_stop_phase2(struct qla_tgt *tgt)
850 struct qla_hw_data *ha = tgt->ha;
851 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
854 if (tgt->tgt_stopped) {
855 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
856 "Already in tgt->tgt_stopped state\n");
861 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
862 "Waiting for %d IRQ commands to complete (tgt %p)",
863 tgt->irq_cmd_count, tgt);
865 mutex_lock(&vha->vha_tgt.tgt_mutex);
866 spin_lock_irqsave(&ha->hardware_lock, flags);
867 while (tgt->irq_cmd_count != 0) {
868 spin_unlock_irqrestore(&ha->hardware_lock, flags);
870 spin_lock_irqsave(&ha->hardware_lock, flags);
873 tgt->tgt_stopped = 1;
874 spin_unlock_irqrestore(&ha->hardware_lock, flags);
875 mutex_unlock(&vha->vha_tgt.tgt_mutex);
877 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
880 EXPORT_SYMBOL(qlt_stop_phase2);
882 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
883 static void qlt_release(struct qla_tgt *tgt)
885 scsi_qla_host_t *vha = tgt->vha;
887 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
888 qlt_stop_phase2(tgt);
890 vha->vha_tgt.qla_tgt = NULL;
892 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
893 "Release of tgt %p finished\n", tgt);
898 /* ha->hardware_lock supposed to be held on entry */
899 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
900 const void *param, unsigned int param_size)
902 struct qla_tgt_sess_work_param *prm;
905 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
907 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
908 "qla_target(%d): Unable to create session "
909 "work, command will be refused", 0);
913 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
914 "Scheduling work (type %d, prm %p)"
915 " to find session for param %p (size %d, tgt %p)\n",
916 type, prm, param, param_size, tgt);
919 memcpy(&prm->tm_iocb, param, param_size);
921 spin_lock_irqsave(&tgt->sess_work_lock, flags);
922 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
923 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
925 schedule_work(&tgt->sess_work);
931 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
933 static void qlt_send_notify_ack(struct scsi_qla_host *vha,
934 struct imm_ntfy_from_isp *ntfy,
935 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
936 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
938 struct qla_hw_data *ha = vha->hw;
940 struct nack_to_isp *nack;
942 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
944 /* Send marker if required */
945 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
948 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
950 ql_dbg(ql_dbg_tgt, vha, 0xe049,
951 "qla_target(%d): %s failed: unable to allocate "
952 "request packet\n", vha->vp_idx, __func__);
956 if (vha->vha_tgt.qla_tgt != NULL)
957 vha->vha_tgt.qla_tgt->notify_ack_expected++;
959 pkt->entry_type = NOTIFY_ACK_TYPE;
960 pkt->entry_count = 1;
962 nack = (struct nack_to_isp *)pkt;
963 nack->ox_id = ntfy->ox_id;
965 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
966 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
967 nack->u.isp24.flags = ntfy->u.isp24.flags &
968 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
970 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
971 nack->u.isp24.status = ntfy->u.isp24.status;
972 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
973 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
974 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
975 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
976 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
977 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
978 nack->u.isp24.srr_reject_code = srr_reject_code;
979 nack->u.isp24.srr_reject_code_expl = srr_explan;
980 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
982 ql_dbg(ql_dbg_tgt, vha, 0xe005,
983 "qla_target(%d): Sending 24xx Notify Ack %d\n",
984 vha->vp_idx, nack->u.isp24.status);
986 qla2x00_start_iocbs(vha, vha->req);
990 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
992 static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
993 struct abts_recv_from_24xx *abts, uint32_t status,
996 struct qla_hw_data *ha = vha->hw;
997 struct abts_resp_to_24xx *resp;
1001 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1002 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1005 /* Send marker if required */
1006 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1009 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1011 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1012 "qla_target(%d): %s failed: unable to allocate "
1013 "request packet", vha->vp_idx, __func__);
1017 resp->entry_type = ABTS_RESP_24XX;
1018 resp->entry_count = 1;
1019 resp->nport_handle = abts->nport_handle;
1020 resp->vp_index = vha->vp_idx;
1021 resp->sof_type = abts->sof_type;
1022 resp->exchange_address = abts->exchange_address;
1023 resp->fcp_hdr_le = abts->fcp_hdr_le;
1024 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1025 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1026 F_CTL_SEQ_INITIATIVE);
1027 p = (uint8_t *)&f_ctl;
1028 resp->fcp_hdr_le.f_ctl[0] = *p++;
1029 resp->fcp_hdr_le.f_ctl[1] = *p++;
1030 resp->fcp_hdr_le.f_ctl[2] = *p;
1032 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1033 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1034 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1035 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1036 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1037 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1039 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1040 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1041 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1042 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1043 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1044 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1046 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1047 if (status == FCP_TMF_CMPL) {
1048 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1049 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1050 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1051 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1052 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1053 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1055 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1056 resp->payload.ba_rjt.reason_code =
1057 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1058 /* Other bytes are zero */
1061 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1063 qla2x00_start_iocbs(vha, vha->req);
1067 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1069 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1070 struct abts_resp_from_24xx_fw *entry)
1072 struct ctio7_to_24xx *ctio;
1074 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1075 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1076 /* Send marker if required */
1077 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1080 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1082 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1083 "qla_target(%d): %s failed: unable to allocate "
1084 "request packet\n", vha->vp_idx, __func__);
1089 * We've got on entrance firmware's response on by us generated
1090 * ABTS response. So, in it ID fields are reversed.
1093 ctio->entry_type = CTIO_TYPE7;
1094 ctio->entry_count = 1;
1095 ctio->nport_handle = entry->nport_handle;
1096 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1097 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1098 ctio->vp_index = vha->vp_idx;
1099 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1100 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1101 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1102 ctio->exchange_addr = entry->exchange_addr_to_abort;
1103 ctio->u.status1.flags =
1104 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1105 CTIO7_FLAGS_TERMINATE);
1106 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1108 qla2x00_start_iocbs(vha, vha->req);
1110 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1111 FCP_TMF_CMPL, true);
1114 /* ha->hardware_lock supposed to be held on entry */
1115 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1116 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1118 struct qla_hw_data *ha = vha->hw;
1119 struct se_session *se_sess = sess->se_sess;
1120 struct qla_tgt_mgmt_cmd *mcmd;
1121 struct se_cmd *se_cmd;
1124 bool found_lun = false;
1126 spin_lock(&se_sess->sess_cmd_lock);
1127 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1128 struct qla_tgt_cmd *cmd =
1129 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1130 if (cmd->tag == abts->exchange_addr_to_abort) {
1131 lun = cmd->unpacked_lun;
1136 spin_unlock(&se_sess->sess_cmd_lock);
1141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1142 "qla_target(%d): task abort (tag=%d)\n",
1143 vha->vp_idx, abts->exchange_addr_to_abort);
1145 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1147 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1148 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1149 vha->vp_idx, __func__);
1152 memset(mcmd, 0, sizeof(*mcmd));
1155 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1157 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
1158 abts->exchange_addr_to_abort);
1160 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1161 "qla_target(%d): tgt_ops->handle_tmr()"
1162 " failed: %d", vha->vp_idx, rc);
1163 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1171 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1173 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1174 struct abts_recv_from_24xx *abts)
1176 struct qla_hw_data *ha = vha->hw;
1177 struct qla_tgt_sess *sess;
1178 uint32_t tag = abts->exchange_addr_to_abort;
1182 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1183 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1184 "qla_target(%d): ABTS: Abort Sequence not "
1185 "supported\n", vha->vp_idx);
1186 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1190 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1191 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1192 "qla_target(%d): ABTS: Unknown Exchange "
1193 "Address received\n", vha->vp_idx);
1194 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1198 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1199 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1200 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1201 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1202 le32_to_cpu(abts->fcp_hdr_le.parameter));
1204 s_id[0] = abts->fcp_hdr_le.s_id[2];
1205 s_id[1] = abts->fcp_hdr_le.s_id[1];
1206 s_id[2] = abts->fcp_hdr_le.s_id[0];
1208 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1210 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1211 "qla_target(%d): task abort for non-existant session\n",
1213 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
1214 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1216 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1222 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1224 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1225 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1227 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1233 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1235 static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1236 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1238 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1239 struct ctio7_to_24xx *ctio;
1241 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1242 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1243 ha, atio, resp_code);
1245 /* Send marker if required */
1246 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1249 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1251 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1252 "qla_target(%d): %s failed: unable to allocate "
1253 "request packet\n", ha->vp_idx, __func__);
1257 ctio->entry_type = CTIO_TYPE7;
1258 ctio->entry_count = 1;
1259 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1260 ctio->nport_handle = mcmd->sess->loop_id;
1261 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1262 ctio->vp_index = ha->vp_idx;
1263 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1264 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1265 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1266 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1267 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1268 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1269 CTIO7_FLAGS_SEND_STATUS);
1270 ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1271 ctio->u.status1.scsi_status =
1272 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1273 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
1274 ctio->u.status1.sense_data[0] = resp_code;
1276 qla2x00_start_iocbs(ha, ha->req);
1279 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1281 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1283 EXPORT_SYMBOL(qlt_free_mcmd);
1285 /* callback from target fabric module code */
1286 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1288 struct scsi_qla_host *vha = mcmd->sess->vha;
1289 struct qla_hw_data *ha = vha->hw;
1290 unsigned long flags;
1292 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1293 "TM response mcmd (%p) status %#x state %#x",
1294 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1296 spin_lock_irqsave(&ha->hardware_lock, flags);
1297 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1298 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1301 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1302 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1303 mcmd->fc_tm_rsp, false);
1305 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1309 * Make the callback for ->free_mcmd() to queue_work() and invoke
1310 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1311 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1312 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1313 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1314 * qlt_xmit_tm_rsp() returns here..
1316 ha->tgt.tgt_ops->free_mcmd(mcmd);
1317 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1319 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1322 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1324 struct qla_tgt_cmd *cmd = prm->cmd;
1326 BUG_ON(cmd->sg_cnt == 0);
1328 prm->sg = (struct scatterlist *)cmd->sg;
1329 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1330 cmd->sg_cnt, cmd->dma_data_direction);
1331 if (unlikely(prm->seg_cnt == 0))
1334 prm->cmd->sg_mapped = 1;
1337 * If greater than four sg entries then we need to allocate
1338 * the continuation entries
1340 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1341 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1342 prm->tgt->datasegs_per_cmd, prm->tgt->datasegs_per_cont);
1344 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
1345 prm->seg_cnt, prm->req_cnt);
1349 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1350 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1351 0, prm->cmd->sg_cnt);
1355 static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
1356 struct qla_tgt_cmd *cmd)
1358 struct qla_hw_data *ha = vha->hw;
1360 BUG_ON(!cmd->sg_mapped);
1361 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1365 static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1368 struct qla_hw_data *ha = vha->hw;
1369 device_reg_t __iomem *reg = ha->iobase;
1372 if (vha->req->cnt < (req_cnt + 2)) {
1373 cnt = (uint16_t)RD_REG_DWORD(®->isp24.req_q_out);
1375 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
1376 "Request ring circled: cnt=%d, vha->->ring_index=%d, "
1377 "vha->req->cnt=%d, req_cnt=%d\n", cnt,
1378 vha->req->ring_index, vha->req->cnt, req_cnt);
1379 if (vha->req->ring_index < cnt)
1380 vha->req->cnt = cnt - vha->req->ring_index;
1382 vha->req->cnt = vha->req->length -
1383 (vha->req->ring_index - cnt);
1386 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1387 ql_dbg(ql_dbg_tgt, vha, 0xe00b,
1388 "qla_target(%d): There is no room in the "
1389 "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
1390 "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
1391 vha->req->cnt, req_cnt);
1394 vha->req->cnt -= req_cnt;
1400 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1402 static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1404 /* Adjust ring index. */
1405 vha->req->ring_index++;
1406 if (vha->req->ring_index == vha->req->length) {
1407 vha->req->ring_index = 0;
1408 vha->req->ring_ptr = vha->req->ring;
1410 vha->req->ring_ptr++;
1412 return (cont_entry_t *)vha->req->ring_ptr;
1415 /* ha->hardware_lock supposed to be held on entry */
1416 static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1418 struct qla_hw_data *ha = vha->hw;
1421 h = ha->tgt.current_handle;
1422 /* always increment cmd handle */
1425 if (h > DEFAULT_OUTSTANDING_COMMANDS)
1426 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1427 if (h == ha->tgt.current_handle) {
1428 ql_dbg(ql_dbg_tgt, vha, 0xe04e,
1429 "qla_target(%d): Ran out of "
1430 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1431 h = QLA_TGT_NULL_HANDLE;
1434 } while ((h == QLA_TGT_NULL_HANDLE) ||
1435 (h == QLA_TGT_SKIP_HANDLE) ||
1436 (ha->tgt.cmds[h-1] != NULL));
1438 if (h != QLA_TGT_NULL_HANDLE)
1439 ha->tgt.current_handle = h;
1444 /* ha->hardware_lock supposed to be held on entry */
1445 static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1446 struct scsi_qla_host *vha)
1449 struct ctio7_to_24xx *pkt;
1450 struct qla_hw_data *ha = vha->hw;
1451 struct atio_from_isp *atio = &prm->cmd->atio;
1453 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1455 memset(pkt, 0, sizeof(*pkt));
1457 pkt->entry_type = CTIO_TYPE7;
1458 pkt->entry_count = (uint8_t)prm->req_cnt;
1459 pkt->vp_index = vha->vp_idx;
1461 h = qlt_make_handle(vha);
1462 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1464 * CTIO type 7 from the firmware doesn't provide a way to
1465 * know the initiator's LOOP ID, hence we can't find
1466 * the session and, so, the command.
1470 ha->tgt.cmds[h-1] = prm->cmd;
1472 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1473 pkt->nport_handle = prm->cmd->loop_id;
1474 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1475 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1476 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1477 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1478 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1479 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
1480 pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1481 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1483 ql_dbg(ql_dbg_tgt, vha, 0xe00c,
1484 "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
1485 vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT,
1486 le16_to_cpu(pkt->u.status0.ox_id));
1491 * ha->hardware_lock supposed to be held on entry. We have already made sure
1492 * that there is sufficient amount of request entries to not drop it.
1494 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1495 struct scsi_qla_host *vha)
1498 uint32_t *dword_ptr;
1499 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1501 /* Build continuation packets */
1502 while (prm->seg_cnt > 0) {
1503 cont_a64_entry_t *cont_pkt64 =
1504 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1507 * Make sure that from cont_pkt64 none of
1508 * 64-bit specific fields used for 32-bit
1509 * addressing. Cast to (cont_entry_t *) for
1513 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1515 cont_pkt64->entry_count = 1;
1516 cont_pkt64->sys_define = 0;
1518 if (enable_64bit_addressing) {
1519 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1521 (uint32_t *)&cont_pkt64->dseg_0_address;
1523 cont_pkt64->entry_type = CONTINUE_TYPE;
1525 (uint32_t *)&((cont_entry_t *)
1526 cont_pkt64)->dseg_0_address;
1529 /* Load continuation entry data segments */
1531 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1532 cnt++, prm->seg_cnt--) {
1534 cpu_to_le32(pci_dma_lo32
1535 (sg_dma_address(prm->sg)));
1536 if (enable_64bit_addressing) {
1538 cpu_to_le32(pci_dma_hi32
1542 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1544 ql_dbg(ql_dbg_tgt, vha, 0xe00d,
1545 "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
1546 (long long unsigned int)
1547 pci_dma_hi32(sg_dma_address(prm->sg)),
1548 (long long unsigned int)
1549 pci_dma_lo32(sg_dma_address(prm->sg)),
1550 (int)sg_dma_len(prm->sg));
1552 prm->sg = sg_next(prm->sg);
1558 * ha->hardware_lock supposed to be held on entry. We have already made sure
1559 * that there is sufficient amount of request entries to not drop it.
1561 static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1562 struct scsi_qla_host *vha)
1565 uint32_t *dword_ptr;
1566 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1567 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1569 ql_dbg(ql_dbg_tgt, vha, 0xe00e,
1570 "iocb->scsi_status=%x, iocb->flags=%x\n",
1571 le16_to_cpu(pkt24->u.status0.scsi_status),
1572 le16_to_cpu(pkt24->u.status0.flags));
1574 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1576 /* Setup packet address segment pointer */
1577 dword_ptr = pkt24->u.status0.dseg_0_address;
1579 /* Set total data segment count */
1581 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1583 if (prm->seg_cnt == 0) {
1584 /* No data transfer */
1590 /* If scatter gather */
1591 ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
1593 /* Load command entry data segments */
1595 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1596 cnt++, prm->seg_cnt--) {
1598 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1599 if (enable_64bit_addressing) {
1601 cpu_to_le32(pci_dma_hi32(
1602 sg_dma_address(prm->sg)));
1604 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1606 ql_dbg(ql_dbg_tgt, vha, 0xe010,
1607 "S/G Segment phys_addr=%llx:%llx, len=%d\n",
1608 (long long unsigned int)pci_dma_hi32(sg_dma_address(
1610 (long long unsigned int)pci_dma_lo32(sg_dma_address(
1612 (int)sg_dma_len(prm->sg));
1614 prm->sg = sg_next(prm->sg);
1617 qlt_load_cont_data_segments(prm, vha);
1620 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1622 return cmd->bufflen > 0;
1626 * Called without ha->hardware_lock held
1628 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1629 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1630 uint32_t *full_req_cnt)
1632 struct qla_tgt *tgt = cmd->tgt;
1633 struct scsi_qla_host *vha = tgt->vha;
1634 struct qla_hw_data *ha = vha->hw;
1635 struct se_cmd *se_cmd = &cmd->se_cmd;
1637 if (unlikely(cmd->aborted)) {
1638 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1639 "qla_target(%d): terminating exchange "
1640 "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
1643 cmd->state = QLA_TGT_STATE_ABORTED;
1645 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1647 /* !! At this point cmd could be already freed !! */
1648 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1651 ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u\n",
1652 vha->vp_idx, cmd->tag);
1656 prm->rq_result = scsi_status;
1657 prm->sense_buffer = &cmd->sense_buffer[0];
1658 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1662 prm->add_status_pkt = 0;
1664 ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
1665 prm->rq_result, xmit_type);
1667 /* Send marker if required */
1668 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1671 ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
1673 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1674 if (qlt_pci_map_calc_cnt(prm) != 0)
1678 *full_req_cnt = prm->req_cnt;
1680 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1681 prm->residual = se_cmd->residual_count;
1682 ql_dbg(ql_dbg_tgt, vha, 0xe014,
1683 "Residual underflow: %d (tag %d, "
1684 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1685 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1686 cmd->bufflen, prm->rq_result);
1687 prm->rq_result |= SS_RESIDUAL_UNDER;
1688 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1689 prm->residual = se_cmd->residual_count;
1690 ql_dbg(ql_dbg_tgt, vha, 0xe015,
1691 "Residual overflow: %d (tag %d, "
1692 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1693 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1694 cmd->bufflen, prm->rq_result);
1695 prm->rq_result |= SS_RESIDUAL_OVER;
1698 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1700 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1701 * ignored in *xmit_response() below
1703 if (qlt_has_data(cmd)) {
1704 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1705 (IS_FWI2_CAPABLE(ha) &&
1706 (prm->rq_result != 0))) {
1707 prm->add_status_pkt = 1;
1713 ql_dbg(ql_dbg_tgt, vha, 0xe016,
1714 "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
1715 prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
1720 static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1721 struct qla_tgt_cmd *cmd, int sending_sense)
1723 if (ha->tgt.enable_class_2)
1727 return cmd->conf_compl_supported;
1729 return ha->tgt.enable_explicit_conf &&
1730 cmd->conf_compl_supported;
1733 #ifdef CONFIG_QLA_TGT_DEBUG_SRR
1735 * Original taken from the XFS code
1737 static unsigned long qlt_srr_random(void)
1740 static unsigned long RandomValue;
1741 static DEFINE_SPINLOCK(lock);
1742 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1746 unsigned long flags;
1748 spin_lock_irqsave(&lock, flags);
1750 RandomValue = jiffies;
1756 rv = 16807 * lo - 2836 * hi;
1760 spin_unlock_irqrestore(&lock, flags);
1764 static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1766 #if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1767 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1769 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1770 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1771 "Dropping cmd %p (tag %d) status", cmd, cmd->tag);
1775 * It's currently not possible to simulate SRRs for FCP_WRITE without
1776 * a physical link layer failure, so don't even try here..
1778 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1781 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1782 ((qlt_srr_random() % 100) == 20)) {
1784 unsigned int tot_len = 0;
1787 leave = qlt_srr_random() % cmd->sg_cnt;
1789 for (i = 0; i < leave; i++)
1790 tot_len += cmd->sg[i].length;
1792 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1793 "Cutting cmd %p (tag %d) buffer"
1794 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1795 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
1796 cmd->bufflen, cmd->sg_cnt);
1798 cmd->bufflen = tot_len;
1799 cmd->sg_cnt = leave;
1802 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1803 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1805 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1806 "Cutting cmd %p (tag %d) buffer head "
1807 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
1810 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1811 else if (qlt_set_data_offset(cmd, offset)) {
1812 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1813 "qlt_set_data_offset() failed (tag %d)", cmd->tag);
1818 static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1822 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1823 struct qla_tgt_prm *prm)
1825 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1826 (uint32_t)sizeof(ctio->u.status1.sense_data));
1827 ctio->u.status0.flags |=
1828 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1829 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1830 ctio->u.status0.flags |= __constant_cpu_to_le16(
1831 CTIO7_FLAGS_EXPLICIT_CONFORM |
1832 CTIO7_FLAGS_CONFORM_REQ);
1834 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1835 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1836 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1839 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1840 if (prm->cmd->se_cmd.scsi_status != 0) {
1841 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1842 "Skipping EXPLICIT_CONFORM and "
1843 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1844 "non GOOD status\n");
1845 goto skip_explict_conf;
1847 ctio->u.status1.flags |= __constant_cpu_to_le16(
1848 CTIO7_FLAGS_EXPLICIT_CONFORM |
1849 CTIO7_FLAGS_CONFORM_REQ);
1852 ctio->u.status1.flags &=
1853 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1854 ctio->u.status1.flags |=
1855 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1856 ctio->u.status1.scsi_status |=
1857 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1858 ctio->u.status1.sense_length =
1859 cpu_to_le16(prm->sense_buffer_len);
1860 for (i = 0; i < prm->sense_buffer_len/4; i++)
1861 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1862 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1864 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
1867 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
1868 "qla_target(%d): %d bytes of sense "
1869 "lost", prm->tgt->ha->vp_idx,
1870 prm->sense_buffer_len % 4);
1876 ctio->u.status1.flags &=
1877 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1878 ctio->u.status1.flags |=
1879 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1880 ctio->u.status1.sense_length = 0;
1881 memset(ctio->u.status1.sense_data, 0,
1882 sizeof(ctio->u.status1.sense_data));
1885 /* Sense with len > 24, is it possible ??? */
1889 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
1890 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
1892 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
1893 uint8_t scsi_status)
1895 struct scsi_qla_host *vha = cmd->vha;
1896 struct qla_hw_data *ha = vha->hw;
1897 struct ctio7_to_24xx *pkt;
1898 struct qla_tgt_prm prm;
1899 uint32_t full_req_cnt = 0;
1900 unsigned long flags = 0;
1903 memset(&prm, 0, sizeof(prm));
1904 qlt_check_srr_debug(cmd, &xmit_type);
1906 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
1907 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, "
1908 "cmd->dma_data_direction=%d\n", (xmit_type & QLA_TGT_XMIT_STATUS) ?
1909 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction);
1911 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
1913 if (unlikely(res != 0)) {
1914 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
1920 spin_lock_irqsave(&ha->hardware_lock, flags);
1922 /* Does F/W have an IOCBs for this request */
1923 res = qlt_check_reserve_free_req(vha, full_req_cnt);
1925 goto out_unmap_unlock;
1927 res = qlt_24xx_build_ctio_pkt(&prm, vha);
1928 if (unlikely(res != 0))
1929 goto out_unmap_unlock;
1932 pkt = (struct ctio7_to_24xx *)prm.pkt;
1934 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
1935 pkt->u.status0.flags |=
1936 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
1937 CTIO7_FLAGS_STATUS_MODE_0);
1939 qlt_load_data_segments(&prm, vha);
1941 if (prm.add_status_pkt == 0) {
1942 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1943 pkt->u.status0.scsi_status =
1944 cpu_to_le16(prm.rq_result);
1945 pkt->u.status0.residual =
1946 cpu_to_le32(prm.residual);
1947 pkt->u.status0.flags |= __constant_cpu_to_le16(
1948 CTIO7_FLAGS_SEND_STATUS);
1949 if (qlt_need_explicit_conf(ha, cmd, 0)) {
1950 pkt->u.status0.flags |=
1951 __constant_cpu_to_le16(
1952 CTIO7_FLAGS_EXPLICIT_CONFORM |
1953 CTIO7_FLAGS_CONFORM_REQ);
1959 * We have already made sure that there is sufficient
1960 * amount of request entries to not drop HW lock in
1963 struct ctio7_to_24xx *ctio =
1964 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
1966 ql_dbg(ql_dbg_tgt, vha, 0xe019,
1967 "Building additional status packet\n");
1969 memcpy(ctio, pkt, sizeof(*ctio));
1970 ctio->entry_count = 1;
1971 ctio->dseg_count = 0;
1972 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
1973 CTIO7_FLAGS_DATA_IN);
1975 /* Real finish is ctio_m1's finish */
1976 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
1977 pkt->u.status0.flags |= __constant_cpu_to_le16(
1978 CTIO7_FLAGS_DONT_RET_CTIO);
1979 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
1981 pr_debug("Status CTIO7: %p\n", ctio);
1984 qlt_24xx_init_ctio_to_isp(pkt, &prm);
1987 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
1989 ql_dbg(ql_dbg_tgt, vha, 0xe01a,
1990 "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
1993 qla2x00_start_iocbs(vha, vha->req);
1994 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2000 qlt_unmap_sg(vha, cmd);
2001 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2005 EXPORT_SYMBOL(qlt_xmit_response);
2007 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2009 struct ctio7_to_24xx *pkt;
2010 struct scsi_qla_host *vha = cmd->vha;
2011 struct qla_hw_data *ha = vha->hw;
2012 struct qla_tgt *tgt = cmd->tgt;
2013 struct qla_tgt_prm prm;
2014 unsigned long flags;
2017 memset(&prm, 0, sizeof(prm));
2023 /* Send marker if required */
2024 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2027 ql_dbg(ql_dbg_tgt, vha, 0xe01b, "CTIO_start: vha(%d)",
2030 /* Calculate number of entries and segments required */
2031 if (qlt_pci_map_calc_cnt(&prm) != 0)
2034 spin_lock_irqsave(&ha->hardware_lock, flags);
2036 /* Does F/W have an IOCBs for this request */
2037 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2039 goto out_unlock_free_unmap;
2041 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2042 if (unlikely(res != 0))
2043 goto out_unlock_free_unmap;
2044 pkt = (struct ctio7_to_24xx *)prm.pkt;
2045 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2046 CTIO7_FLAGS_STATUS_MODE_0);
2047 qlt_load_data_segments(&prm, vha);
2049 cmd->state = QLA_TGT_STATE_NEED_DATA;
2051 qla2x00_start_iocbs(vha, vha->req);
2052 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2056 out_unlock_free_unmap:
2058 qlt_unmap_sg(vha, cmd);
2059 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2063 EXPORT_SYMBOL(qlt_rdy_to_xfer);
2065 /* If hardware_lock held on entry, might drop it, then reaquire */
2066 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2067 static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2068 struct qla_tgt_cmd *cmd,
2069 struct atio_from_isp *atio)
2071 struct ctio7_to_24xx *ctio24;
2072 struct qla_hw_data *ha = vha->hw;
2076 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2078 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
2080 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2081 "qla_target(%d): %s failed: unable to allocate "
2082 "request packet\n", vha->vp_idx, __func__);
2087 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2088 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2089 "qla_target(%d): Terminating cmd %p with "
2090 "incorrect state %d\n", vha->vp_idx, cmd,
2096 pkt->entry_count = 1;
2097 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2099 ctio24 = (struct ctio7_to_24xx *)pkt;
2100 ctio24->entry_type = CTIO_TYPE7;
2101 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2102 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2103 ctio24->vp_index = vha->vp_idx;
2104 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2105 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2106 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2107 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2108 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2109 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2110 CTIO7_FLAGS_TERMINATE);
2111 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
2113 /* Most likely, it isn't needed */
2114 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2115 &atio->u.isp24.fcp_cmnd.add_cdb[
2116 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2117 if (ctio24->u.status1.residual != 0)
2118 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2120 qla2x00_start_iocbs(vha, vha->req);
2124 static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2125 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2127 unsigned long flags;
2130 if (qlt_issue_marker(vha, ha_locked) < 0)
2134 rc = __qlt_send_term_exchange(vha, cmd, atio);
2137 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2138 rc = __qlt_send_term_exchange(vha, cmd, atio);
2139 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2142 if (!ha_locked && !in_interrupt())
2143 msleep(250); /* just in case */
2145 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2149 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2151 BUG_ON(cmd->sg_mapped);
2153 if (unlikely(cmd->free_sg))
2155 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2157 EXPORT_SYMBOL(qlt_free_cmd);
2159 /* ha->hardware_lock supposed to be held on entry */
2160 static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2161 struct qla_tgt_cmd *cmd, void *ctio)
2163 struct qla_tgt_srr_ctio *sc;
2164 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2165 struct qla_tgt_srr_imm *imm;
2169 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2170 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2173 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2174 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2179 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2182 /* IRQ is already OFF */
2183 spin_lock(&tgt->srr_lock);
2184 sc->srr_id = tgt->ctio_srr_id;
2185 list_add_tail(&sc->srr_list_entry,
2186 &tgt->srr_ctio_list);
2187 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2188 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2189 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2191 list_for_each_entry(imm, &tgt->srr_imm_list,
2193 if (imm->srr_id == sc->srr_id) {
2199 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2200 "Scheduling srr work\n");
2201 schedule_work(&tgt->srr_work);
2203 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2204 "qla_target(%d): imm_srr_id "
2205 "== ctio_srr_id (%d), but there is no "
2206 "corresponding SRR IMM, deleting CTIO "
2207 "SRR %p\n", vha->vp_idx,
2208 tgt->ctio_srr_id, sc);
2209 list_del(&sc->srr_list_entry);
2210 spin_unlock(&tgt->srr_lock);
2216 spin_unlock(&tgt->srr_lock);
2218 struct qla_tgt_srr_imm *ti;
2220 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2221 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2223 spin_lock(&tgt->srr_lock);
2224 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2226 if (imm->srr_id == tgt->ctio_srr_id) {
2227 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2228 "IMM SRR %p deleted (id %d)\n",
2230 list_del(&imm->srr_list_entry);
2231 qlt_reject_free_srr_imm(vha, imm, 1);
2234 spin_unlock(&tgt->srr_lock);
2243 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2245 static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2246 struct qla_tgt_cmd *cmd, uint32_t status)
2251 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2253 __constant_cpu_to_le16(OF_TERM_EXCH));
2258 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2263 /* ha->hardware_lock supposed to be held on entry */
2264 static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2267 struct qla_hw_data *ha = vha->hw;
2270 if (ha->tgt.cmds[handle] != NULL) {
2271 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2272 ha->tgt.cmds[handle] = NULL;
2278 /* ha->hardware_lock supposed to be held on entry */
2279 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2280 uint32_t handle, void *ctio)
2282 struct qla_tgt_cmd *cmd = NULL;
2284 /* Clear out internal marks */
2285 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2286 CTIO_INTERMEDIATE_HANDLE_MARK);
2288 if (handle != QLA_TGT_NULL_HANDLE) {
2289 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
2290 ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
2291 "SKIP_HANDLE CTIO\n");
2294 /* handle-1 is actually used */
2295 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2296 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2297 "qla_target(%d): Wrong handle %x received\n",
2298 vha->vp_idx, handle);
2301 cmd = qlt_get_cmd(vha, handle);
2302 if (unlikely(cmd == NULL)) {
2303 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2304 "qla_target(%d): Suspicious: unable to "
2305 "find the command with handle %x\n", vha->vp_idx,
2309 } else if (ctio != NULL) {
2310 /* We can't get loop ID from CTIO7 */
2311 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2312 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2313 "support NULL handles\n", vha->vp_idx);
2321 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2323 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2324 uint32_t status, void *ctio)
2326 struct qla_hw_data *ha = vha->hw;
2327 struct se_cmd *se_cmd;
2328 struct target_core_fabric_ops *tfo;
2329 struct qla_tgt_cmd *cmd;
2331 ql_dbg(ql_dbg_tgt, vha, 0xe01e,
2332 "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
2333 vha->vp_idx, ctio, status, handle);
2335 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2336 /* That could happen only in case of an error/reset/abort */
2337 if (status != CTIO_SUCCESS) {
2338 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2339 "Intermediate CTIO received"
2340 " (status %x)\n", status);
2345 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
2349 se_cmd = &cmd->se_cmd;
2350 tfo = se_cmd->se_tfo;
2353 qlt_unmap_sg(vha, cmd);
2355 if (unlikely(status != CTIO_SUCCESS)) {
2356 switch (status & 0xFFFF) {
2357 case CTIO_LIP_RESET:
2358 case CTIO_TARGET_RESET:
2361 case CTIO_INVALID_RX_ID:
2363 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
2364 "qla_target(%d): CTIO with "
2365 "status %#x received, state %x, se_cmd %p, "
2366 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
2367 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
2368 status, cmd->state, se_cmd);
2371 case CTIO_PORT_LOGGED_OUT:
2372 case CTIO_PORT_UNAVAILABLE:
2373 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
2374 "qla_target(%d): CTIO with PORT LOGGED "
2375 "OUT (29) or PORT UNAVAILABLE (28) status %x "
2376 "received (state %x, se_cmd %p)\n", vha->vp_idx,
2377 status, cmd->state, se_cmd);
2380 case CTIO_SRR_RECEIVED:
2381 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
2382 "qla_target(%d): CTIO with SRR_RECEIVED"
2383 " status %x received (state %x, se_cmd %p)\n",
2384 vha->vp_idx, status, cmd->state, se_cmd);
2385 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
2391 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
2392 "qla_target(%d): CTIO with error status "
2393 "0x%x received (state %x, se_cmd %p\n",
2394 vha->vp_idx, status, cmd->state, se_cmd);
2398 if (cmd->state != QLA_TGT_STATE_NEED_DATA)
2399 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
2403 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
2404 ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
2405 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2408 cmd->state = QLA_TGT_STATE_DATA_IN;
2410 if (unlikely(status != CTIO_SUCCESS))
2413 cmd->write_data_transferred = 1;
2415 ql_dbg(ql_dbg_tgt, vha, 0xe020,
2416 "Data received, context %x, rx_status %d\n",
2419 ha->tgt.tgt_ops->handle_data(cmd);
2421 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
2422 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
2423 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
2425 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
2426 "qla_target(%d): A command in state (%d) should "
2427 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
2430 if (unlikely(status != CTIO_SUCCESS)) {
2431 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
2435 ha->tgt.tgt_ops->free_cmd(cmd);
2438 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
2443 switch (task_codes) {
2444 case ATIO_SIMPLE_QUEUE:
2445 fcp_task_attr = MSG_SIMPLE_TAG;
2447 case ATIO_HEAD_OF_QUEUE:
2448 fcp_task_attr = MSG_HEAD_TAG;
2450 case ATIO_ORDERED_QUEUE:
2451 fcp_task_attr = MSG_ORDERED_TAG;
2453 case ATIO_ACA_QUEUE:
2454 fcp_task_attr = MSG_ACA_TAG;
2457 fcp_task_attr = MSG_SIMPLE_TAG;
2460 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
2461 "qla_target: unknown task code %x, use ORDERED instead\n",
2463 fcp_task_attr = MSG_ORDERED_TAG;
2467 return fcp_task_attr;
2470 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
2473 * Process context for I/O path into tcm_qla2xxx code
2475 static void qlt_do_work(struct work_struct *work)
2477 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
2478 scsi_qla_host_t *vha = cmd->vha;
2479 struct qla_hw_data *ha = vha->hw;
2480 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2481 struct qla_tgt_sess *sess = NULL;
2482 struct atio_from_isp *atio = &cmd->atio;
2484 unsigned long flags;
2485 uint32_t data_length;
2486 int ret, fcp_task_attr, data_dir, bidi = 0;
2491 spin_lock_irqsave(&ha->hardware_lock, flags);
2492 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
2493 atio->u.isp24.fcp_hdr.s_id);
2494 /* Do kref_get() before dropping qla_hw_data->hardware_lock. */
2496 kref_get(&sess->se_sess->sess_kref);
2497 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2499 if (unlikely(!sess)) {
2500 uint8_t *s_id = atio->u.isp24.fcp_hdr.s_id;
2502 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
2503 "qla_target(%d): Unable to find wwn login"
2504 " (s_id %x:%x:%x), trying to create it manually\n",
2505 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
2507 if (atio->u.raw.entry_count > 1) {
2508 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
2509 "Dropping multy entry cmd %p\n", cmd);
2513 mutex_lock(&vha->vha_tgt.tgt_mutex);
2514 sess = qlt_make_local_sess(vha, s_id);
2515 /* sess has an extra creation ref. */
2516 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2523 cmd->loop_id = sess->loop_id;
2524 cmd->conf_compl_supported = sess->conf_compl_supported;
2526 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
2527 cmd->tag = atio->u.isp24.exchange_addr;
2528 cmd->unpacked_lun = scsilun_to_int(
2529 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
2531 if (atio->u.isp24.fcp_cmnd.rddata &&
2532 atio->u.isp24.fcp_cmnd.wrdata) {
2534 data_dir = DMA_TO_DEVICE;
2535 } else if (atio->u.isp24.fcp_cmnd.rddata)
2536 data_dir = DMA_FROM_DEVICE;
2537 else if (atio->u.isp24.fcp_cmnd.wrdata)
2538 data_dir = DMA_TO_DEVICE;
2540 data_dir = DMA_NONE;
2542 fcp_task_attr = qlt_get_fcp_task_attr(vha,
2543 atio->u.isp24.fcp_cmnd.task_attr);
2544 data_length = be32_to_cpu(get_unaligned((uint32_t *)
2545 &atio->u.isp24.fcp_cmnd.add_cdb[
2546 atio->u.isp24.fcp_cmnd.add_cdb_len]));
2548 ql_dbg(ql_dbg_tgt, vha, 0xe022,
2549 "qla_target: START qla command: %p lun: 0x%04x (tag %d)\n",
2550 cmd, cmd->unpacked_lun, cmd->tag);
2552 ret = vha->hw->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
2553 fcp_task_attr, data_dir, bidi);
2557 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
2559 spin_lock_irqsave(&ha->hardware_lock, flags);
2560 ha->tgt.tgt_ops->put_sess(sess);
2561 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2565 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
2567 * cmd has not sent to target yet, so pass NULL as the second
2568 * argument to qlt_send_term_exchange() and free the memory here.
2570 spin_lock_irqsave(&ha->hardware_lock, flags);
2571 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
2572 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2574 ha->tgt.tgt_ops->put_sess(sess);
2575 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2578 /* ha->hardware_lock supposed to be held on entry */
2579 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
2580 struct atio_from_isp *atio)
2582 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2583 struct qla_tgt_cmd *cmd;
2585 if (unlikely(tgt->tgt_stop)) {
2586 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
2587 "New command while device %p is shutting down\n", tgt);
2591 cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC);
2593 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
2594 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
2598 INIT_LIST_HEAD(&cmd->cmd_list);
2600 memcpy(&cmd->atio, atio, sizeof(*atio));
2601 cmd->state = QLA_TGT_STATE_NEW;
2602 cmd->tgt = vha->vha_tgt.qla_tgt;
2605 INIT_WORK(&cmd->work, qlt_do_work);
2606 queue_work(qla_tgt_wq, &cmd->work);
2611 /* ha->hardware_lock supposed to be held on entry */
2612 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
2613 int fn, void *iocb, int flags)
2615 struct scsi_qla_host *vha = sess->vha;
2616 struct qla_hw_data *ha = vha->hw;
2617 struct qla_tgt_mgmt_cmd *mcmd;
2621 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2623 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
2624 "qla_target(%d): Allocation of management "
2625 "command failed, some commands and their data could "
2626 "leak\n", vha->vp_idx);
2629 memset(mcmd, 0, sizeof(*mcmd));
2633 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
2634 sizeof(mcmd->orig_iocb.imm_ntfy));
2636 mcmd->tmr_func = fn;
2637 mcmd->flags = flags;
2640 case QLA_TGT_CLEAR_ACA:
2641 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
2642 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
2643 tmr_func = TMR_CLEAR_ACA;
2646 case QLA_TGT_TARGET_RESET:
2647 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
2648 "qla_target(%d): TARGET_RESET received\n",
2650 tmr_func = TMR_TARGET_WARM_RESET;
2653 case QLA_TGT_LUN_RESET:
2654 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
2655 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
2656 tmr_func = TMR_LUN_RESET;
2659 case QLA_TGT_CLEAR_TS:
2660 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
2661 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
2662 tmr_func = TMR_CLEAR_TASK_SET;
2665 case QLA_TGT_ABORT_TS:
2666 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
2667 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
2668 tmr_func = TMR_ABORT_TASK_SET;
2671 case QLA_TGT_ABORT_ALL:
2672 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
2673 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
2678 case QLA_TGT_ABORT_ALL_SESS:
2679 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
2680 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
2685 case QLA_TGT_NEXUS_LOSS_SESS:
2686 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
2687 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
2692 case QLA_TGT_NEXUS_LOSS:
2693 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
2694 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
2699 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
2700 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
2701 sess->vha->vp_idx, fn);
2702 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2706 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
2708 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
2709 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
2710 sess->vha->vp_idx, res);
2711 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2718 /* ha->hardware_lock supposed to be held on entry */
2719 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
2721 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2722 struct qla_hw_data *ha = vha->hw;
2723 struct qla_tgt *tgt;
2724 struct qla_tgt_sess *sess;
2725 uint32_t lun, unpacked_lun;
2728 tgt = vha->vha_tgt.qla_tgt;
2730 lun = a->u.isp24.fcp_cmnd.lun;
2731 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
2732 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
2733 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
2734 a->u.isp24.fcp_hdr.s_id);
2735 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
2738 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
2739 "qla_target(%d): task mgmt fn 0x%x for "
2740 "non-existant session\n", vha->vp_idx, fn);
2741 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
2742 sizeof(struct atio_from_isp));
2745 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
2748 /* ha->hardware_lock supposed to be held on entry */
2749 static int __qlt_abort_task(struct scsi_qla_host *vha,
2750 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
2752 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2753 struct qla_hw_data *ha = vha->hw;
2754 struct qla_tgt_mgmt_cmd *mcmd;
2755 uint32_t lun, unpacked_lun;
2758 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2760 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
2761 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
2762 vha->vp_idx, __func__);
2765 memset(mcmd, 0, sizeof(*mcmd));
2768 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
2769 sizeof(mcmd->orig_iocb.imm_ntfy));
2771 lun = a->u.isp24.fcp_cmnd.lun;
2772 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
2774 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
2775 le16_to_cpu(iocb->u.isp2x.seq_id));
2777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
2778 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2780 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2787 /* ha->hardware_lock supposed to be held on entry */
2788 static int qlt_abort_task(struct scsi_qla_host *vha,
2789 struct imm_ntfy_from_isp *iocb)
2791 struct qla_hw_data *ha = vha->hw;
2792 struct qla_tgt_sess *sess;
2795 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
2797 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
2799 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
2800 "qla_target(%d): task abort for unexisting "
2801 "session\n", vha->vp_idx);
2802 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2803 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
2806 return __qlt_abort_task(vha, iocb, sess);
2810 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2812 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
2813 struct imm_ntfy_from_isp *iocb)
2817 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
2818 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
2819 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2821 switch (iocb->u.isp24.status_subcode) {
2827 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
2832 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2833 if (tgt->link_reinit_iocb_pending) {
2834 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
2836 tgt->link_reinit_iocb_pending = 0;
2838 res = 1; /* send notify ack */
2843 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
2844 "qla_target(%d): Unsupported ELS command %x "
2845 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
2846 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
2853 static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
2855 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
2856 size_t first_offset = 0, rem_offset = offset, tmp = 0;
2857 int i, sg_srr_cnt, bufflen = 0;
2859 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
2860 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
2861 "cmd->sg_cnt: %u, direction: %d\n",
2862 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
2865 * FIXME: Reject non zero SRR relative offset until we can test
2866 * this code properly.
2868 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
2871 if (!cmd->sg || !cmd->sg_cnt) {
2872 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
2873 "Missing cmd->sg or zero cmd->sg_cnt in"
2874 " qla_tgt_set_data_offset\n");
2878 * Walk the current cmd->sg list until we locate the new sg_srr_start
2880 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
2881 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
2882 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
2883 i, sg, sg_page(sg), sg->length, sg->offset);
2885 if ((sg->length + tmp) > offset) {
2886 first_offset = rem_offset;
2888 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
2889 "Found matching sg[%d], using %p as sg_srr_start, "
2890 "and using first_offset: %zu\n", i, sg,
2895 rem_offset -= sg->length;
2898 if (!sg_srr_start) {
2899 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
2900 "Unable to locate sg_srr_start for offset: %u\n", offset);
2903 sg_srr_cnt = (cmd->sg_cnt - i);
2905 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
2907 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
2908 "Unable to allocate sgp\n");
2911 sg_init_table(sg_srr, sg_srr_cnt);
2914 * Walk the remaining list for sg_srr_start, mapping to the newly
2915 * allocated sg_srr taking first_offset into account.
2917 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
2919 sg_set_page(sgp, sg_page(sg),
2920 (sg->length - first_offset), first_offset);
2923 sg_set_page(sgp, sg_page(sg), sg->length, 0);
2925 bufflen += sgp->length;
2933 cmd->sg_cnt = sg_srr_cnt;
2934 cmd->bufflen = bufflen;
2935 cmd->offset += offset;
2938 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
2939 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
2941 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
2943 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
2946 if (cmd->sg_cnt < 0)
2949 if (cmd->bufflen < 0)
2955 static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
2956 uint32_t srr_rel_offs, int *xmit_type)
2958 int res = 0, rel_offs;
2960 rel_offs = srr_rel_offs - cmd->offset;
2961 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
2962 srr_rel_offs, rel_offs);
2964 *xmit_type = QLA_TGT_XMIT_ALL;
2967 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
2968 "qla_target(%d): SRR rel_offs (%d) < 0",
2969 cmd->vha->vp_idx, rel_offs);
2971 } else if (rel_offs == cmd->bufflen)
2972 *xmit_type = QLA_TGT_XMIT_STATUS;
2973 else if (rel_offs > 0)
2974 res = qlt_set_data_offset(cmd, rel_offs);
2979 /* No locks, thread context */
2980 static void qlt_handle_srr(struct scsi_qla_host *vha,
2981 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
2983 struct imm_ntfy_from_isp *ntfy =
2984 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
2985 struct qla_hw_data *ha = vha->hw;
2986 struct qla_tgt_cmd *cmd = sctio->cmd;
2987 struct se_cmd *se_cmd = &cmd->se_cmd;
2988 unsigned long flags;
2989 int xmit_type = 0, resp = 0;
2993 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
2994 srr_ui = ntfy->u.isp24.srr_ui;
2996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3001 spin_lock_irqsave(&ha->hardware_lock, flags);
3002 qlt_send_notify_ack(vha, ntfy,
3003 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3004 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3005 xmit_type = QLA_TGT_XMIT_STATUS;
3008 case SRR_IU_DATA_IN:
3009 if (!cmd->sg || !cmd->sg_cnt) {
3010 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3011 "Unable to process SRR_IU_DATA_IN due to"
3012 " missing cmd->sg, state: %d\n", cmd->state);
3016 if (se_cmd->scsi_status != 0) {
3017 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3018 "Rejecting SRR_IU_DATA_IN with non GOOD "
3022 cmd->bufflen = se_cmd->data_length;
3024 if (qlt_has_data(cmd)) {
3025 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3027 spin_lock_irqsave(&ha->hardware_lock, flags);
3028 qlt_send_notify_ack(vha, ntfy,
3029 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3030 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3033 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3034 "qla_target(%d): SRR for in data for cmd "
3035 "without them (tag %d, SCSI status %d), "
3036 "reject", vha->vp_idx, cmd->tag,
3037 cmd->se_cmd.scsi_status);
3041 case SRR_IU_DATA_OUT:
3042 if (!cmd->sg || !cmd->sg_cnt) {
3043 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3044 "Unable to process SRR_IU_DATA_OUT due to"
3045 " missing cmd->sg\n");
3049 if (se_cmd->scsi_status != 0) {
3050 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3051 "Rejecting SRR_IU_DATA_OUT"
3052 " with non GOOD scsi_status\n");
3055 cmd->bufflen = se_cmd->data_length;
3057 if (qlt_has_data(cmd)) {
3058 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3060 spin_lock_irqsave(&ha->hardware_lock, flags);
3061 qlt_send_notify_ack(vha, ntfy,
3062 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3063 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3064 if (xmit_type & QLA_TGT_XMIT_DATA)
3065 qlt_rdy_to_xfer(cmd);
3067 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3068 "qla_target(%d): SRR for out data for cmd "
3069 "without them (tag %d, SCSI status %d), "
3070 "reject", vha->vp_idx, cmd->tag,
3071 cmd->se_cmd.scsi_status);
3076 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3077 "qla_target(%d): Unknown srr_ui value %x",
3078 vha->vp_idx, srr_ui);
3082 /* Transmit response in case of status and data-in cases */
3084 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3089 spin_lock_irqsave(&ha->hardware_lock, flags);
3090 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3091 NOTIFY_ACK_SRR_FLAGS_REJECT,
3092 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3093 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3094 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3095 cmd->state = QLA_TGT_STATE_DATA_IN;
3098 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3099 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3102 static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3103 struct qla_tgt_srr_imm *imm, int ha_locked)
3105 struct qla_hw_data *ha = vha->hw;
3106 unsigned long flags = 0;
3109 spin_lock_irqsave(&ha->hardware_lock, flags);
3111 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3112 NOTIFY_ACK_SRR_FLAGS_REJECT,
3113 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3114 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3117 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3122 static void qlt_handle_srr_work(struct work_struct *work)
3124 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3125 struct scsi_qla_host *vha = tgt->vha;
3126 struct qla_tgt_srr_ctio *sctio;
3127 unsigned long flags;
3129 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3133 spin_lock_irqsave(&tgt->srr_lock, flags);
3134 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3135 struct qla_tgt_srr_imm *imm, *i, *ti;
3136 struct qla_tgt_cmd *cmd;
3137 struct se_cmd *se_cmd;
3140 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3142 if (i->srr_id == sctio->srr_id) {
3143 list_del(&i->srr_list_entry);
3145 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3146 "qla_target(%d): There must be "
3147 "only one IMM SRR per CTIO SRR "
3148 "(IMM SRR %p, id %d, CTIO %p\n",
3149 vha->vp_idx, i, i->srr_id, sctio);
3150 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3156 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3157 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3162 "Not found matching IMM for SRR CTIO (id %d)\n",
3166 list_del(&sctio->srr_list_entry);
3168 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3172 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3173 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3182 se_cmd = &cmd->se_cmd;
3184 cmd->sg_cnt = se_cmd->t_data_nents;
3185 cmd->sg = se_cmd->t_data_sg;
3187 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3188 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3189 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
3190 se_cmd->t_task_cdb[0], cmd->sg_cnt, cmd->offset);
3192 qlt_handle_srr(vha, sctio, imm);
3198 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3201 /* ha->hardware_lock supposed to be held on entry */
3202 static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3203 struct imm_ntfy_from_isp *iocb)
3205 struct qla_tgt_srr_imm *imm;
3206 struct qla_tgt *tgt = vha->vha_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 = vha->vha_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 = vha->vha_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 = vha->vha_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 = vha->vha_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_tgt_sess *sess = NULL;
3928 fc_port_t *fcport = NULL;
3929 int rc, global_resets;
3930 uint16_t loop_id = 0;
3934 atomic_read(&vha->vha_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(&vha->vha_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(&vha->vha_tgt.
3967 qla_tgt->tgt_global_resets_count));
3971 sess = qlt_create_sess(vha, fcport, true);
3977 static void qlt_abort_work(struct qla_tgt *tgt,
3978 struct qla_tgt_sess_work_param *prm)
3980 struct scsi_qla_host *vha = tgt->vha;
3981 struct qla_hw_data *ha = vha->hw;
3982 struct qla_tgt_sess *sess = NULL;
3983 unsigned long flags;
3988 spin_lock_irqsave(&ha->hardware_lock, flags);
3993 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
3994 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
3995 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
3997 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3998 (unsigned char *)&be_s_id);
4000 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4002 mutex_lock(&vha->vha_tgt.tgt_mutex);
4003 sess = qlt_make_local_sess(vha, s_id);
4004 /* sess has got an extra creation ref */
4005 mutex_unlock(&vha->vha_tgt.tgt_mutex);
4007 spin_lock_irqsave(&ha->hardware_lock, flags);
4011 kref_get(&sess->se_sess->sess_kref);
4017 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4021 ha->tgt.tgt_ops->put_sess(sess);
4022 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4026 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
4028 ha->tgt.tgt_ops->put_sess(sess);
4029 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4032 static void qlt_tmr_work(struct qla_tgt *tgt,
4033 struct qla_tgt_sess_work_param *prm)
4035 struct atio_from_isp *a = &prm->tm_iocb2;
4036 struct scsi_qla_host *vha = tgt->vha;
4037 struct qla_hw_data *ha = vha->hw;
4038 struct qla_tgt_sess *sess = NULL;
4039 unsigned long flags;
4040 uint8_t *s_id = NULL; /* to hide compiler warnings */
4042 uint32_t lun, unpacked_lun;
4046 spin_lock_irqsave(&ha->hardware_lock, flags);
4051 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4052 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4054 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4056 mutex_lock(&vha->vha_tgt.tgt_mutex);
4057 sess = qlt_make_local_sess(vha, s_id);
4058 /* sess has got an extra creation ref */
4059 mutex_unlock(&vha->vha_tgt.tgt_mutex);
4061 spin_lock_irqsave(&ha->hardware_lock, flags);
4065 kref_get(&sess->se_sess->sess_kref);
4069 lun = a->u.isp24.fcp_cmnd.lun;
4070 lun_size = sizeof(lun);
4071 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4072 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4074 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4078 ha->tgt.tgt_ops->put_sess(sess);
4079 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4083 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
4085 ha->tgt.tgt_ops->put_sess(sess);
4086 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4089 static void qlt_sess_work_fn(struct work_struct *work)
4091 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4092 struct scsi_qla_host *vha = tgt->vha;
4093 unsigned long flags;
4095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4097 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4098 while (!list_empty(&tgt->sess_works_list)) {
4099 struct qla_tgt_sess_work_param *prm = list_entry(
4100 tgt->sess_works_list.next, typeof(*prm),
4101 sess_works_list_entry);
4104 * This work can be scheduled on several CPUs at time, so we
4105 * must delete the entry to eliminate double processing
4107 list_del(&prm->sess_works_list_entry);
4109 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4111 switch (prm->type) {
4112 case QLA_TGT_SESS_WORK_ABORT:
4113 qlt_abort_work(tgt, prm);
4115 case QLA_TGT_SESS_WORK_TM:
4116 qlt_tmr_work(tgt, prm);
4123 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4127 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4130 /* Must be called under tgt_host_action_mutex */
4131 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4133 struct qla_tgt *tgt;
4135 if (!QLA_TGT_MODE_ENABLED())
4138 if (!IS_TGT_MODE_CAPABLE(ha)) {
4139 ql_log(ql_log_warn, base_vha, 0xe070,
4140 "This adapter does not support target mode.\n");
4144 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
4145 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
4147 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
4149 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4151 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4152 "Unable to allocate struct qla_tgt\n");
4156 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4157 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4160 tgt->vha = base_vha;
4161 init_waitqueue_head(&tgt->waitQ);
4162 INIT_LIST_HEAD(&tgt->sess_list);
4163 INIT_LIST_HEAD(&tgt->del_sess_list);
4164 INIT_DELAYED_WORK(&tgt->sess_del_work,
4165 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4166 spin_lock_init(&tgt->sess_work_lock);
4167 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4168 INIT_LIST_HEAD(&tgt->sess_works_list);
4169 spin_lock_init(&tgt->srr_lock);
4170 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4171 INIT_LIST_HEAD(&tgt->srr_imm_list);
4172 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4173 atomic_set(&tgt->tgt_global_resets_count, 0);
4175 base_vha->vha_tgt.qla_tgt = tgt;
4177 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4178 "qla_target(%d): using 64 Bit PCI addressing",
4180 tgt->tgt_enable_64bit_addr = 1;
4182 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4183 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4184 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4186 mutex_lock(&qla_tgt_mutex);
4187 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4188 mutex_unlock(&qla_tgt_mutex);
4193 /* Must be called under tgt_host_action_mutex */
4194 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4196 if (!vha->vha_tgt.qla_tgt)
4199 mutex_lock(&qla_tgt_mutex);
4200 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
4201 mutex_unlock(&qla_tgt_mutex);
4203 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4205 qlt_release(vha->vha_tgt.qla_tgt);
4210 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4215 pr_debug("qla2xxx HW vha->node_name: ");
4216 for (i = 0; i < WWN_SIZE; i++)
4217 pr_debug("%02x ", vha->node_name[i]);
4219 pr_debug("qla2xxx HW vha->port_name: ");
4220 for (i = 0; i < WWN_SIZE; i++)
4221 pr_debug("%02x ", vha->port_name[i]);
4224 pr_debug("qla2xxx passed configfs WWPN: ");
4225 put_unaligned_be64(wwpn, b);
4226 for (i = 0; i < WWN_SIZE; i++)
4227 pr_debug("%02x ", b[i]);
4232 * qla_tgt_lport_register - register lport with external module
4234 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4235 * @wwpn: Passwd FC target WWPN
4236 * @callback: lport initialization callback for tcm_qla2xxx code
4237 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4239 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
4240 u64 npiv_wwpn, u64 npiv_wwnn,
4241 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
4243 struct qla_tgt *tgt;
4244 struct scsi_qla_host *vha;
4245 struct qla_hw_data *ha;
4246 struct Scsi_Host *host;
4247 unsigned long flags;
4251 mutex_lock(&qla_tgt_mutex);
4252 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4260 if (!(host->hostt->supported_mode & MODE_TARGET))
4263 spin_lock_irqsave(&ha->hardware_lock, flags);
4264 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
4265 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4267 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4270 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4272 if (!scsi_host_get(host)) {
4273 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4274 "Unable to scsi_host_get() for"
4275 " qla2xxx scsi_host\n");
4278 qlt_lport_dump(vha, phys_wwpn, b);
4280 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4281 scsi_host_put(host);
4284 mutex_unlock(&qla_tgt_mutex);
4286 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
4288 scsi_host_put(host);
4292 mutex_unlock(&qla_tgt_mutex);
4296 EXPORT_SYMBOL(qlt_lport_register);
4299 * qla_tgt_lport_deregister - Degister lport
4301 * @vha: Registered scsi_qla_host pointer
4303 void qlt_lport_deregister(struct scsi_qla_host *vha)
4305 struct qla_hw_data *ha = vha->hw;
4306 struct Scsi_Host *sh = vha->host;
4308 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
4310 vha->vha_tgt.target_lport_ptr = NULL;
4311 ha->tgt.tgt_ops = NULL;
4313 * Release the Scsi_Host reference for the underlying qla2xxx host
4317 EXPORT_SYMBOL(qlt_lport_deregister);
4319 /* Must be called under HW lock */
4320 void qlt_set_mode(struct scsi_qla_host *vha)
4322 struct qla_hw_data *ha = vha->hw;
4324 switch (ql2x_ini_mode) {
4325 case QLA2XXX_INI_MODE_DISABLED:
4326 case QLA2XXX_INI_MODE_EXCLUSIVE:
4327 vha->host->active_mode = MODE_TARGET;
4329 case QLA2XXX_INI_MODE_ENABLED:
4330 vha->host->active_mode |= MODE_TARGET;
4336 if (ha->tgt.ini_mode_force_reverse)
4337 qla_reverse_ini_mode(vha);
4340 /* Must be called under HW lock */
4341 void qlt_clear_mode(struct scsi_qla_host *vha)
4343 struct qla_hw_data *ha = vha->hw;
4345 switch (ql2x_ini_mode) {
4346 case QLA2XXX_INI_MODE_DISABLED:
4347 vha->host->active_mode = MODE_UNKNOWN;
4349 case QLA2XXX_INI_MODE_EXCLUSIVE:
4350 vha->host->active_mode = MODE_INITIATOR;
4352 case QLA2XXX_INI_MODE_ENABLED:
4353 vha->host->active_mode &= ~MODE_TARGET;
4359 if (ha->tgt.ini_mode_force_reverse)
4360 qla_reverse_ini_mode(vha);
4364 * qla_tgt_enable_vha - NO LOCK HELD
4366 * host_reset, bring up w/ Target Mode Enabled
4369 qlt_enable_vha(struct scsi_qla_host *vha)
4371 struct qla_hw_data *ha = vha->hw;
4372 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4373 unsigned long flags;
4374 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
4377 ql_dbg(ql_dbg_tgt, vha, 0xe069,
4378 "Unable to locate qla_tgt pointer from"
4379 " struct qla_hw_data\n");
4384 spin_lock_irqsave(&ha->hardware_lock, flags);
4385 tgt->tgt_stopped = 0;
4387 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4390 qla24xx_disable_vp(vha);
4391 qla24xx_enable_vp(vha);
4393 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
4394 qla2xxx_wake_dpc(base_vha);
4395 qla2x00_wait_for_hba_online(base_vha);
4398 EXPORT_SYMBOL(qlt_enable_vha);
4401 * qla_tgt_disable_vha - NO LOCK HELD
4403 * Disable Target Mode and reset the adapter
4406 qlt_disable_vha(struct scsi_qla_host *vha)
4408 struct qla_hw_data *ha = vha->hw;
4409 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4410 unsigned long flags;
4413 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
4414 "Unable to locate qla_tgt pointer from"
4415 " struct qla_hw_data\n");
4420 spin_lock_irqsave(&ha->hardware_lock, flags);
4421 qlt_clear_mode(vha);
4422 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4424 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4425 qla2xxx_wake_dpc(vha);
4426 qla2x00_wait_for_hba_online(vha);
4430 * Called from qla_init.c:qla24xx_vport_create() contex to setup
4431 * the target mode specific struct scsi_qla_host and struct qla_hw_data
4435 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
4437 if (!qla_tgt_mode_enabled(vha))
4440 vha->vha_tgt.qla_tgt = NULL;
4442 mutex_init(&vha->vha_tgt.tgt_mutex);
4443 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
4445 qlt_clear_mode(vha);
4448 * NOTE: Currently the value is kept the same for <24xx and
4449 * >=24xx ISPs. If it is necessary to change it,
4450 * the check should be added for specific ISPs,
4451 * assigning the value appropriately.
4453 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
4455 qlt_add_target(ha, vha);
4459 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
4462 * FC-4 Feature bit 0 indicates target functionality to the name server.
4464 if (qla_tgt_mode_enabled(vha)) {
4465 if (qla_ini_mode_enabled(vha))
4466 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
4468 ct_req->req.rff_id.fc4_feature = BIT_0;
4469 } else if (qla_ini_mode_enabled(vha)) {
4470 ct_req->req.rff_id.fc4_feature = BIT_1;
4475 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
4478 * Beginning of ATIO ring has initialization control block already built
4479 * by nvram config routine.
4481 * Returns 0 on success.
4484 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
4486 struct qla_hw_data *ha = vha->hw;
4488 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
4490 if (!qla_tgt_mode_enabled(vha))
4493 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
4494 pkt->u.raw.signature = ATIO_PROCESSED;
4501 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
4502 * @ha: SCSI driver HA context
4505 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
4507 struct qla_hw_data *ha = vha->hw;
4508 struct atio_from_isp *pkt;
4511 if (!vha->flags.online)
4514 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
4515 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
4516 cnt = pkt->u.raw.entry_count;
4518 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
4520 for (i = 0; i < cnt; i++) {
4521 ha->tgt.atio_ring_index++;
4522 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
4523 ha->tgt.atio_ring_index = 0;
4524 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
4526 ha->tgt.atio_ring_ptr++;
4528 pkt->u.raw.signature = ATIO_PROCESSED;
4529 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
4534 /* Adjust ring index */
4535 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
4539 qlt_24xx_config_rings(struct scsi_qla_host *vha)
4541 struct qla_hw_data *ha = vha->hw;
4542 if (!QLA_TGT_MODE_ENABLED())
4545 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
4546 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
4547 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
4549 if (IS_ATIO_MSIX_CAPABLE(ha)) {
4550 struct qla_msix_entry *msix = &ha->msix_entries[2];
4551 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
4553 icb->msix_atio = cpu_to_le16(msix->entry);
4554 ql_dbg(ql_dbg_init, vha, 0xf072,
4555 "Registering ICB vector 0x%x for atio que.\n",
4561 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
4563 struct qla_hw_data *ha = vha->hw;
4565 if (qla_tgt_mode_enabled(vha)) {
4566 if (!ha->tgt.saved_set) {
4567 /* We save only once */
4568 ha->tgt.saved_exchange_count = nv->exchange_count;
4569 ha->tgt.saved_firmware_options_1 =
4570 nv->firmware_options_1;
4571 ha->tgt.saved_firmware_options_2 =
4572 nv->firmware_options_2;
4573 ha->tgt.saved_firmware_options_3 =
4574 nv->firmware_options_3;
4575 ha->tgt.saved_set = 1;
4578 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
4580 /* Enable target mode */
4581 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
4583 /* Disable ini mode, if requested */
4584 if (!qla_ini_mode_enabled(vha))
4585 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
4587 /* Disable Full Login after LIP */
4588 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
4589 /* Enable initial LIP */
4590 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
4591 /* Enable FC tapes support */
4592 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
4593 /* Disable Full Login after LIP */
4594 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
4595 /* Enable target PRLI control */
4596 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
4598 if (ha->tgt.saved_set) {
4599 nv->exchange_count = ha->tgt.saved_exchange_count;
4600 nv->firmware_options_1 =
4601 ha->tgt.saved_firmware_options_1;
4602 nv->firmware_options_2 =
4603 ha->tgt.saved_firmware_options_2;
4604 nv->firmware_options_3 =
4605 ha->tgt.saved_firmware_options_3;
4610 /* out-of-order frames reassembly */
4611 nv->firmware_options_3 |= BIT_6|BIT_9;
4613 if (ha->tgt.enable_class_2) {
4614 if (vha->flags.init_done)
4615 fc_host_supported_classes(vha->host) =
4616 FC_COS_CLASS2 | FC_COS_CLASS3;
4618 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
4620 if (vha->flags.init_done)
4621 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
4623 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
4628 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
4629 struct init_cb_24xx *icb)
4631 struct qla_hw_data *ha = vha->hw;
4633 if (ha->tgt.node_name_set) {
4634 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
4635 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
4640 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
4642 struct qla_hw_data *ha = vha->hw;
4644 if (!QLA_TGT_MODE_ENABLED())
4647 if (qla_tgt_mode_enabled(vha)) {
4648 if (!ha->tgt.saved_set) {
4649 /* We save only once */
4650 ha->tgt.saved_exchange_count = nv->exchange_count;
4651 ha->tgt.saved_firmware_options_1 =
4652 nv->firmware_options_1;
4653 ha->tgt.saved_firmware_options_2 =
4654 nv->firmware_options_2;
4655 ha->tgt.saved_firmware_options_3 =
4656 nv->firmware_options_3;
4657 ha->tgt.saved_set = 1;
4660 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
4662 /* Enable target mode */
4663 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
4665 /* Disable ini mode, if requested */
4666 if (!qla_ini_mode_enabled(vha))
4667 nv->firmware_options_1 |=
4668 __constant_cpu_to_le32(BIT_5);
4670 /* Disable Full Login after LIP */
4671 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
4672 /* Enable initial LIP */
4673 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
4674 /* Enable FC tapes support */
4675 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
4676 /* Disable Full Login after LIP */
4677 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
4678 /* Enable target PRLI control */
4679 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
4681 if (ha->tgt.saved_set) {
4682 nv->exchange_count = ha->tgt.saved_exchange_count;
4683 nv->firmware_options_1 =
4684 ha->tgt.saved_firmware_options_1;
4685 nv->firmware_options_2 =
4686 ha->tgt.saved_firmware_options_2;
4687 nv->firmware_options_3 =
4688 ha->tgt.saved_firmware_options_3;
4693 /* out-of-order frames reassembly */
4694 nv->firmware_options_3 |= BIT_6|BIT_9;
4696 if (ha->tgt.enable_class_2) {
4697 if (vha->flags.init_done)
4698 fc_host_supported_classes(vha->host) =
4699 FC_COS_CLASS2 | FC_COS_CLASS3;
4701 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
4703 if (vha->flags.init_done)
4704 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
4706 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
4711 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
4712 struct init_cb_81xx *icb)
4714 struct qla_hw_data *ha = vha->hw;
4716 if (!QLA_TGT_MODE_ENABLED())
4719 if (ha->tgt.node_name_set) {
4720 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
4721 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
4726 qlt_83xx_iospace_config(struct qla_hw_data *ha)
4728 if (!QLA_TGT_MODE_ENABLED())
4731 ha->msix_count += 1; /* For ATIO Q */
4735 qlt_24xx_process_response_error(struct scsi_qla_host *vha,
4736 struct sts_entry_24xx *pkt)
4738 switch (pkt->entry_type) {
4739 case ABTS_RECV_24XX:
4740 case ABTS_RESP_24XX:
4742 case NOTIFY_ACK_TYPE:
4750 qlt_modify_vp_config(struct scsi_qla_host *vha,
4751 struct vp_config_entry_24xx *vpmod)
4753 if (qla_tgt_mode_enabled(vha))
4754 vpmod->options_idx1 &= ~BIT_5;
4755 /* Disable ini mode, if requested */
4756 if (!qla_ini_mode_enabled(vha))
4757 vpmod->options_idx1 &= ~BIT_4;
4761 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
4763 if (!QLA_TGT_MODE_ENABLED())
4766 if (ha->mqenable || IS_QLA83XX(ha)) {
4767 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
4768 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
4770 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
4771 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
4774 mutex_init(&base_vha->vha_tgt.tgt_mutex);
4775 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
4776 qlt_clear_mode(base_vha);
4780 qla83xx_msix_atio_q(int irq, void *dev_id)
4782 struct rsp_que *rsp;
4783 scsi_qla_host_t *vha;
4784 struct qla_hw_data *ha;
4785 unsigned long flags;
4787 rsp = (struct rsp_que *) dev_id;
4789 vha = pci_get_drvdata(ha->pdev);
4791 spin_lock_irqsave(&ha->hardware_lock, flags);
4793 qlt_24xx_process_atio_queue(vha);
4794 qla24xx_process_response_queue(vha, rsp);
4796 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4802 qlt_mem_alloc(struct qla_hw_data *ha)
4804 if (!QLA_TGT_MODE_ENABLED())
4807 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
4808 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
4809 if (!ha->tgt.tgt_vp_map)
4812 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
4813 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
4814 &ha->tgt.atio_dma, GFP_KERNEL);
4815 if (!ha->tgt.atio_ring) {
4816 kfree(ha->tgt.tgt_vp_map);
4823 qlt_mem_free(struct qla_hw_data *ha)
4825 if (!QLA_TGT_MODE_ENABLED())
4828 if (ha->tgt.atio_ring) {
4829 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
4830 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
4833 kfree(ha->tgt.tgt_vp_map);
4836 /* vport_slock to be held by the caller */
4838 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
4840 if (!QLA_TGT_MODE_ENABLED())
4845 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
4848 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
4851 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
4854 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
4859 static int __init qlt_parse_ini_mode(void)
4861 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
4862 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
4863 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
4864 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
4865 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
4866 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
4873 int __init qlt_init(void)
4877 if (!qlt_parse_ini_mode()) {
4878 ql_log(ql_log_fatal, NULL, 0xe06b,
4879 "qlt_parse_ini_mode() failed\n");
4883 if (!QLA_TGT_MODE_ENABLED())
4886 qla_tgt_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep",
4887 sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd), 0,
4889 if (!qla_tgt_cmd_cachep) {
4890 ql_log(ql_log_fatal, NULL, 0xe06c,
4891 "kmem_cache_create for qla_tgt_cmd_cachep failed\n");
4895 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
4896 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
4897 qla_tgt_mgmt_cmd), 0, NULL);
4898 if (!qla_tgt_mgmt_cmd_cachep) {
4899 ql_log(ql_log_fatal, NULL, 0xe06d,
4900 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
4905 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
4906 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
4907 if (!qla_tgt_mgmt_cmd_mempool) {
4908 ql_log(ql_log_fatal, NULL, 0xe06e,
4909 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
4911 goto out_mgmt_cmd_cachep;
4914 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
4916 ql_log(ql_log_fatal, NULL, 0xe06f,
4917 "alloc_workqueue for qla_tgt_wq failed\n");
4919 goto out_cmd_mempool;
4922 * Return 1 to signal that initiator-mode is being disabled
4924 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
4927 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
4928 out_mgmt_cmd_cachep:
4929 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
4931 kmem_cache_destroy(qla_tgt_cmd_cachep);
4937 if (!QLA_TGT_MODE_ENABLED())
4940 destroy_workqueue(qla_tgt_wq);
4941 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
4942 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
4943 kmem_cache_destroy(qla_tgt_cmd_cachep);