2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
4 * based on qla2x00t.c code:
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
11 * Forward port and refactoring to modern qla2xxx and target/configfs
13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/types.h>
29 #include <linux/blkdev.h>
30 #include <linux/interrupt.h>
31 #include <linux/pci.h>
32 #include <linux/delay.h>
33 #include <linux/list.h>
34 #include <linux/workqueue.h>
35 #include <asm/unaligned.h>
36 #include <scsi/scsi.h>
37 #include <scsi/scsi_host.h>
38 #include <scsi/scsi_tcq.h>
39 #include <target/target_core_base.h>
40 #include <target/target_core_fabric.h>
43 #include "qla_target.h"
45 static int ql2xtgt_tape_enable;
46 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47 MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
50 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51 module_param(qlini_mode, charp, S_IRUGO);
52 MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
57 "\"disabled\" - initiator mode will never be enabled; "
58 "\"enabled\" (default) - initiator mode will always stay enabled.");
60 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
62 static int temp_sam_status = SAM_STAT_BUSY;
65 * From scsi/fc/fc_fcp.h
67 enum fcp_resp_rsp_codes {
69 FCP_DATA_LEN_INVALID = 1,
70 FCP_CMND_FIELDS_INVALID = 2,
71 FCP_DATA_PARAM_MISMATCH = 3,
74 FCP_TMF_INVALID_LUN = 9,
78 * fc_pri_ta from scsi/fc/fc_fcp.h
80 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
81 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
82 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
83 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
84 #define FCP_PTA_MASK 7 /* mask for task attribute field */
85 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
86 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
89 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
90 * must be called under HW lock and could unlock/lock it inside.
91 * It isn't an issue, since in the current implementation on the time when
92 * those functions are called:
94 * - Either context is IRQ and only IRQ handler can modify HW data,
95 * including rings related fields,
97 * - Or access to target mode variables from struct qla_tgt doesn't
98 * cross those functions boundaries, except tgt_stop, which
99 * additionally protected by irq_cmd_count.
101 /* Predefs for callbacks handed to qla2xxx LLD */
102 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
103 struct atio_from_isp *pkt, uint8_t);
104 static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
105 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
106 int fn, void *iocb, int flags);
107 static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
108 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
109 static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
110 struct qla_tgt_srr_imm *imm, int ha_lock);
111 static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
112 struct qla_tgt_cmd *cmd);
113 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
114 struct atio_from_isp *atio, uint16_t status, int qfull);
115 static void qlt_disable_vha(struct scsi_qla_host *vha);
116 static void qlt_clear_tgt_db(struct qla_tgt *tgt);
117 static void qlt_send_notify_ack(struct scsi_qla_host *vha,
118 struct imm_ntfy_from_isp *ntfy,
119 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
120 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
121 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
122 struct imm_ntfy_from_isp *imm, int ha_locked);
126 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
127 static struct kmem_cache *qla_tgt_plogi_cachep;
128 static mempool_t *qla_tgt_mgmt_cmd_mempool;
129 static struct workqueue_struct *qla_tgt_wq;
130 static DEFINE_MUTEX(qla_tgt_mutex);
131 static LIST_HEAD(qla_tgt_glist);
133 /* This API intentionally takes dest as a parameter, rather than returning
134 * int value to avoid caller forgetting to issue wmb() after the store */
135 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
137 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
138 *dest = atomic_inc_return(&base_vha->generation_tick);
143 /* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
144 static struct qla_tgt_sess *qlt_find_sess_by_port_name(
146 const uint8_t *port_name)
148 struct qla_tgt_sess *sess;
150 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
151 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
158 /* Might release hw lock, then reaquire!! */
159 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
161 /* Send marker if required */
162 if (unlikely(vha->marker_needed != 0)) {
163 int rc = qla2x00_issue_marker(vha, vha_locked);
164 if (rc != QLA_SUCCESS) {
165 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
166 "qla_target(%d): issue_marker() failed\n",
175 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
178 struct qla_hw_data *ha = vha->hw;
181 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
184 if (vha->d_id.b.al_pa == d_id[2])
187 BUG_ON(ha->tgt.tgt_vp_map == NULL);
188 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
189 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
190 return ha->tgt.tgt_vp_map[vp_idx].vha;
196 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
199 struct qla_hw_data *ha = vha->hw;
201 if (vha->vp_idx == vp_idx)
204 BUG_ON(ha->tgt.tgt_vp_map == NULL);
205 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
206 return ha->tgt.tgt_vp_map[vp_idx].vha;
211 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
215 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
217 vha->hw->tgt.num_pend_cmds++;
218 if (vha->hw->tgt.num_pend_cmds > vha->hw->qla_stats.stat_max_pend_cmds)
219 vha->hw->qla_stats.stat_max_pend_cmds =
220 vha->hw->tgt.num_pend_cmds;
221 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
223 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
227 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
228 vha->hw->tgt.num_pend_cmds--;
229 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
232 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
233 struct atio_from_isp *atio, uint8_t ha_locked)
235 ql_dbg(ql_dbg_tgt, vha, 0xe072,
236 "%s: qla_target(%d): type %x ox_id %04x\n",
237 __func__, vha->vp_idx, atio->u.raw.entry_type,
238 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
240 switch (atio->u.raw.entry_type) {
243 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
244 atio->u.isp24.fcp_hdr.d_id);
245 if (unlikely(NULL == host)) {
246 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
247 "qla_target(%d): Received ATIO_TYPE7 "
248 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
249 atio->u.isp24.fcp_hdr.d_id[0],
250 atio->u.isp24.fcp_hdr.d_id[1],
251 atio->u.isp24.fcp_hdr.d_id[2]);
254 qlt_24xx_atio_pkt(host, atio, ha_locked);
258 case IMMED_NOTIFY_TYPE:
260 struct scsi_qla_host *host = vha;
261 struct imm_ntfy_from_isp *entry =
262 (struct imm_ntfy_from_isp *)atio;
264 if ((entry->u.isp24.vp_index != 0xFF) &&
265 (entry->u.isp24.nport_handle != 0xFFFF)) {
266 host = qlt_find_host_by_vp_idx(vha,
267 entry->u.isp24.vp_index);
268 if (unlikely(!host)) {
269 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
270 "qla_target(%d): Received "
271 "ATIO (IMMED_NOTIFY_TYPE) "
272 "with unknown vp_index %d\n",
273 vha->vp_idx, entry->u.isp24.vp_index);
277 qlt_24xx_atio_pkt(host, atio, ha_locked);
282 ql_dbg(ql_dbg_tgt, vha, 0xe040,
283 "qla_target(%d): Received unknown ATIO atio "
284 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
291 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
293 switch (pkt->entry_type) {
295 ql_dbg(ql_dbg_tgt, vha, 0xe073,
296 "qla_target(%d):%s: CRC2 Response pkt\n",
297 vha->vp_idx, __func__);
300 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
301 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
303 if (unlikely(!host)) {
304 ql_dbg(ql_dbg_tgt, vha, 0xe041,
305 "qla_target(%d): Response pkt (CTIO_TYPE7) "
306 "received, with unknown vp_index %d\n",
307 vha->vp_idx, entry->vp_index);
310 qlt_response_pkt(host, pkt);
314 case IMMED_NOTIFY_TYPE:
316 struct scsi_qla_host *host = vha;
317 struct imm_ntfy_from_isp *entry =
318 (struct imm_ntfy_from_isp *)pkt;
320 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
321 if (unlikely(!host)) {
322 ql_dbg(ql_dbg_tgt, vha, 0xe042,
323 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
324 "received, with unknown vp_index %d\n",
325 vha->vp_idx, entry->u.isp24.vp_index);
328 qlt_response_pkt(host, pkt);
332 case NOTIFY_ACK_TYPE:
334 struct scsi_qla_host *host = vha;
335 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
337 if (0xFF != entry->u.isp24.vp_index) {
338 host = qlt_find_host_by_vp_idx(vha,
339 entry->u.isp24.vp_index);
340 if (unlikely(!host)) {
341 ql_dbg(ql_dbg_tgt, vha, 0xe043,
342 "qla_target(%d): Response "
343 "pkt (NOTIFY_ACK_TYPE) "
344 "received, with unknown "
345 "vp_index %d\n", vha->vp_idx,
346 entry->u.isp24.vp_index);
350 qlt_response_pkt(host, pkt);
356 struct abts_recv_from_24xx *entry =
357 (struct abts_recv_from_24xx *)pkt;
358 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
360 if (unlikely(!host)) {
361 ql_dbg(ql_dbg_tgt, vha, 0xe044,
362 "qla_target(%d): Response pkt "
363 "(ABTS_RECV_24XX) received, with unknown "
364 "vp_index %d\n", vha->vp_idx, entry->vp_index);
367 qlt_response_pkt(host, pkt);
373 struct abts_resp_to_24xx *entry =
374 (struct abts_resp_to_24xx *)pkt;
375 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
377 if (unlikely(!host)) {
378 ql_dbg(ql_dbg_tgt, vha, 0xe045,
379 "qla_target(%d): Response pkt "
380 "(ABTS_RECV_24XX) received, with unknown "
381 "vp_index %d\n", vha->vp_idx, entry->vp_index);
384 qlt_response_pkt(host, pkt);
389 qlt_response_pkt(vha, pkt);
396 * All qlt_plogi_ack_t operations are protected by hardware_lock
400 * This is a zero-base ref-counting solution, since hardware_lock
401 * guarantees that ref_count is not modified concurrently.
402 * Upon successful return content of iocb is undefined
404 static qlt_plogi_ack_t *
405 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
406 struct imm_ntfy_from_isp *iocb)
408 qlt_plogi_ack_t *pla;
410 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
411 if (pla->id.b24 == id->b24) {
412 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
418 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
420 ql_dbg(ql_dbg_async, vha, 0x5088,
421 "qla_target(%d): Allocation of plogi_ack failed\n",
428 list_add_tail(&pla->list, &vha->plogi_ack_list);
433 static void qlt_plogi_ack_unref(struct scsi_qla_host *vha, qlt_plogi_ack_t *pla)
435 BUG_ON(!pla->ref_count);
441 ql_dbg(ql_dbg_async, vha, 0x5089,
442 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
443 " exch %#x ox_id %#x\n", pla->iocb.u.isp24.port_name,
444 pla->iocb.u.isp24.port_id[2], pla->iocb.u.isp24.port_id[1],
445 pla->iocb.u.isp24.port_id[0],
446 le16_to_cpu(pla->iocb.u.isp24.nport_handle),
447 pla->iocb.u.isp24.exchange_address, pla->iocb.ox_id);
448 qlt_send_notify_ack(vha, &pla->iocb, 0, 0, 0, 0, 0, 0);
450 list_del(&pla->list);
451 kmem_cache_free(qla_tgt_plogi_cachep, pla);
455 qlt_plogi_ack_link(struct scsi_qla_host *vha, qlt_plogi_ack_t *pla,
456 struct qla_tgt_sess *sess, qlt_plogi_link_t link)
458 /* Inc ref_count first because link might already be pointing at pla */
461 if (sess->plogi_link[link])
462 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
464 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
465 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
466 " s_id %02x:%02x:%02x, ref=%d\n", sess, link, sess->port_name,
467 pla->iocb.u.isp24.port_name, pla->iocb.u.isp24.port_id[2],
468 pla->iocb.u.isp24.port_id[1], pla->iocb.u.isp24.port_id[0],
471 sess->plogi_link[link] = pla;
475 /* These fields must be initialized by the caller */
478 * number of cmds dropped while we were waiting for
479 * initiator to ack LOGO initialize to 1 if LOGO is
480 * triggered by a command, otherwise, to 0
484 /* These fields are used by callee */
485 struct list_head list;
489 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
491 qlt_port_logo_t *tmp;
494 mutex_lock(&vha->vha_tgt.tgt_mutex);
496 list_for_each_entry(tmp, &vha->logo_list, list) {
497 if (tmp->id.b24 == logo->id.b24) {
498 tmp->cmd_count += logo->cmd_count;
499 mutex_unlock(&vha->vha_tgt.tgt_mutex);
504 list_add_tail(&logo->list, &vha->logo_list);
506 mutex_unlock(&vha->vha_tgt.tgt_mutex);
508 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
510 mutex_lock(&vha->vha_tgt.tgt_mutex);
511 list_del(&logo->list);
512 mutex_unlock(&vha->vha_tgt.tgt_mutex);
514 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
515 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
516 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
517 logo->cmd_count, res);
520 static void qlt_free_session_done(struct work_struct *work)
522 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
524 struct qla_tgt *tgt = sess->tgt;
525 struct scsi_qla_host *vha = sess->vha;
526 struct qla_hw_data *ha = vha->hw;
528 bool logout_started = false;
531 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
532 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
533 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
534 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
535 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
536 sess->logout_on_delete, sess->keep_nport_handle,
537 sess->send_els_logo);
541 if (sess->send_els_logo) {
542 qlt_port_logo_t logo;
543 logo.id = sess->s_id;
545 qlt_send_first_logo(vha, &logo);
548 if (sess->logout_on_delete) {
551 memset(&fcport, 0, sizeof(fcport));
552 fcport.loop_id = sess->loop_id;
553 fcport.d_id = sess->s_id;
554 memcpy(fcport.port_name, sess->port_name, WWN_SIZE);
556 fcport.tgt_session = sess;
558 rc = qla2x00_post_async_logout_work(vha, &fcport, NULL);
559 if (rc != QLA_SUCCESS)
560 ql_log(ql_log_warn, vha, 0xf085,
561 "Schedule logo failed sess %p rc %d\n",
564 logout_started = true;
568 * Release the target session for FC Nexus from fabric module code.
570 if (sess->se_sess != NULL)
571 ha->tgt.tgt_ops->free_session(sess);
573 if (logout_started) {
576 while (!ACCESS_ONCE(sess->logout_completed)) {
578 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
579 "%s: waiting for sess %p logout\n",
586 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf087,
587 "%s: sess %p logout completed\n",
591 spin_lock_irqsave(&ha->hardware_lock, flags);
594 qlt_plogi_ack_t *own =
595 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
596 qlt_plogi_ack_t *con =
597 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
600 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
601 "se_sess %p / sess %p port %8phC is gone,"
602 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
603 sess->se_sess, sess, sess->port_name,
604 own ? "releasing own PLOGI" :
605 "no own PLOGI pending",
606 own ? own->ref_count : -1,
607 con->iocb.u.isp24.port_name, con->ref_count);
608 qlt_plogi_ack_unref(vha, con);
610 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
611 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
612 sess->se_sess, sess, sess->port_name,
613 own ? "releasing own PLOGI" :
614 "no own PLOGI pending",
615 own ? own->ref_count : -1);
619 qlt_plogi_ack_unref(vha, own);
622 list_del(&sess->sess_list_entry);
624 spin_unlock_irqrestore(&ha->hardware_lock, flags);
626 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
627 "Unregistration of sess %p finished\n", sess);
631 * We need to protect against race, when tgt is freed before or
635 if (tgt->sess_count == 0)
636 wake_up_all(&tgt->waitQ);
639 /* ha->tgt.sess_lock supposed to be held on entry */
640 void qlt_unreg_sess(struct qla_tgt_sess *sess)
642 struct scsi_qla_host *vha = sess->vha;
645 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
647 if (!list_empty(&sess->del_list_entry))
648 list_del_init(&sess->del_list_entry);
649 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
651 INIT_WORK(&sess->free_work, qlt_free_session_done);
652 schedule_work(&sess->free_work);
654 EXPORT_SYMBOL(qlt_unreg_sess);
657 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
659 struct qla_hw_data *ha = vha->hw;
660 struct qla_tgt_sess *sess = NULL;
661 uint32_t unpacked_lun, lun = 0;
664 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
665 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
668 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
669 if (loop_id == 0xFFFF) {
671 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
672 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
673 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
674 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
675 #if 0 /* FIXME: do we need to choose a session here? */
676 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
677 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
678 typeof(*sess), sess_list_entry);
680 case QLA_TGT_NEXUS_LOSS_SESS:
681 mcmd = QLA_TGT_NEXUS_LOSS;
683 case QLA_TGT_ABORT_ALL_SESS:
684 mcmd = QLA_TGT_ABORT_ALL;
686 case QLA_TGT_NEXUS_LOSS:
687 case QLA_TGT_ABORT_ALL:
690 ql_dbg(ql_dbg_tgt, vha, 0xe046,
691 "qla_target(%d): Not allowed "
692 "command %x in %s", vha->vp_idx,
701 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
702 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
703 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
706 ql_dbg(ql_dbg_tgt, vha, 0xe000,
707 "Using sess for qla_tgt_reset: %p\n", sess);
713 ql_dbg(ql_dbg_tgt, vha, 0xe047,
714 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
715 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
718 lun = a->u.isp24.fcp_cmnd.lun;
719 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
721 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
722 iocb, QLA24XX_MGMT_SEND_NACK);
725 /* ha->tgt.sess_lock supposed to be held on entry */
726 static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
729 struct qla_tgt *tgt = sess->tgt;
730 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
733 /* Upgrade to unconditional deletion in case it was temporary */
734 if (immediate && sess->deleted == QLA_SESS_DELETION_PENDING)
735 list_del(&sess->del_list_entry);
740 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
741 "Scheduling sess %p for deletion\n", sess);
745 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
746 list_add(&sess->del_list_entry, &tgt->del_sess_list);
748 sess->deleted = QLA_SESS_DELETION_PENDING;
749 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
752 sess->expires = jiffies + dev_loss_tmo * HZ;
754 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
755 "qla_target(%d): session for port %8phC (loop ID %d s_id %02x:%02x:%02x)"
756 " scheduled for deletion in %u secs (expires: %lu) immed: %d, logout: %d, gen: %#x\n",
757 sess->vha->vp_idx, sess->port_name, sess->loop_id,
758 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
759 dev_loss_tmo, sess->expires, immediate, sess->logout_on_delete,
763 mod_delayed_work(system_wq, &tgt->sess_del_work, 0);
765 schedule_delayed_work(&tgt->sess_del_work,
766 sess->expires - jiffies);
769 /* ha->tgt.sess_lock supposed to be held on entry */
770 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
772 struct qla_tgt_sess *sess;
774 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
775 qlt_schedule_sess_for_deletion(sess, true);
777 /* At this point tgt could be already dead */
780 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
783 struct qla_hw_data *ha = vha->hw;
784 dma_addr_t gid_list_dma;
785 struct gid_list_info *gid_list;
790 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
791 &gid_list_dma, GFP_KERNEL);
793 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
794 "qla_target(%d): DMA Alloc failed of %u\n",
795 vha->vp_idx, qla2x00_gid_list_size(ha));
799 /* Get list of logged in devices */
800 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
801 if (rc != QLA_SUCCESS) {
802 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
803 "qla_target(%d): get_id_list() failed: %x\n",
806 goto out_free_id_list;
809 id_iter = (char *)gid_list;
811 for (i = 0; i < entries; i++) {
812 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
813 if ((gid->al_pa == s_id[2]) &&
814 (gid->area == s_id[1]) &&
815 (gid->domain == s_id[0])) {
816 *loop_id = le16_to_cpu(gid->loop_id);
820 id_iter += ha->gid_list_info_size;
824 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
825 gid_list, gid_list_dma);
829 /* ha->tgt.sess_lock supposed to be held on entry */
830 static void qlt_undelete_sess(struct qla_tgt_sess *sess)
832 BUG_ON(sess->deleted != QLA_SESS_DELETION_PENDING);
834 list_del_init(&sess->del_list_entry);
838 static void qlt_del_sess_work_fn(struct delayed_work *work)
840 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
842 struct scsi_qla_host *vha = tgt->vha;
843 struct qla_hw_data *ha = vha->hw;
844 struct qla_tgt_sess *sess;
845 unsigned long flags, elapsed;
847 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
848 while (!list_empty(&tgt->del_sess_list)) {
849 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
852 if (time_after_eq(elapsed, sess->expires)) {
853 /* No turning back */
854 list_del_init(&sess->del_list_entry);
855 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
857 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
858 "Timeout: sess %p about to be deleted\n",
861 ha->tgt.tgt_ops->shutdown_sess(sess);
862 ha->tgt.tgt_ops->put_sess(sess);
864 qlt_unreg_sess(sess);
867 schedule_delayed_work(&tgt->sess_del_work,
868 sess->expires - elapsed);
872 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
876 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
877 * Caller must put it.
879 static struct qla_tgt_sess *qlt_create_sess(
880 struct scsi_qla_host *vha,
884 struct qla_hw_data *ha = vha->hw;
885 struct qla_tgt_sess *sess;
888 /* Check to avoid double sessions */
889 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
890 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
892 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
893 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
894 "Double sess %p found (s_id %x:%x:%x, "
895 "loop_id %d), updating to d_id %x:%x:%x, "
896 "loop_id %d", sess, sess->s_id.b.domain,
897 sess->s_id.b.al_pa, sess->s_id.b.area,
898 sess->loop_id, fcport->d_id.b.domain,
899 fcport->d_id.b.al_pa, fcport->d_id.b.area,
902 /* Cannot undelete at this point */
903 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
904 spin_unlock_irqrestore(&ha->tgt.sess_lock,
910 qlt_undelete_sess(sess);
912 if (!sess->se_sess) {
913 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
914 &sess->port_name[0], sess) < 0) {
915 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
920 kref_get(&sess->se_sess->sess_kref);
921 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
922 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
924 if (sess->local && !local)
927 qlt_do_generation_tick(vha, &sess->generation);
929 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
934 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
936 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
938 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
939 "qla_target(%u): session allocation failed, all commands "
940 "from port %8phC will be refused", vha->vp_idx,
945 sess->tgt = vha->vha_tgt.qla_tgt;
947 sess->s_id = fcport->d_id;
948 sess->loop_id = fcport->loop_id;
950 INIT_LIST_HEAD(&sess->del_list_entry);
952 /* Under normal circumstances we want to logout from firmware when
953 * session eventually ends and release corresponding nport handle.
954 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
955 * code will adjust these flags as necessary. */
956 sess->logout_on_delete = 1;
957 sess->keep_nport_handle = 0;
959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
960 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
961 sess, vha->vha_tgt.qla_tgt);
963 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
964 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
965 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
967 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
968 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
969 vha->vha_tgt.qla_tgt->sess_count++;
970 qlt_do_generation_tick(vha, &sess->generation);
971 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
973 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
974 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
975 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
976 vha->vp_idx, local ? "local " : "", fcport->port_name,
977 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
978 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
981 * Determine if this fc_port->port_name is allowed to access
982 * target mode using explict NodeACLs+MappedLUNs, or using
983 * TPG demo mode. If this is successful a target mode FC nexus
986 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
987 &fcport->port_name[0], sess) < 0) {
991 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
992 * access across ->tgt.sess_lock reaquire.
994 kref_get(&sess->se_sess->sess_kref);
1001 * Called from qla2x00_reg_remote_port()
1003 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
1005 struct qla_hw_data *ha = vha->hw;
1006 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1007 struct qla_tgt_sess *sess;
1008 unsigned long flags;
1010 if (!vha->hw->tgt.tgt_ops)
1013 if (!tgt || (fcport->port_type != FCT_INITIATOR))
1016 if (qla_ini_mode_enabled(vha))
1019 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1020 if (tgt->tgt_stop) {
1021 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1024 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
1026 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1028 mutex_lock(&vha->vha_tgt.tgt_mutex);
1029 sess = qlt_create_sess(vha, fcport, false);
1030 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1032 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1033 } else if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1034 /* Point of no return */
1035 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1038 kref_get(&sess->se_sess->sess_kref);
1040 if (sess->deleted) {
1041 qlt_undelete_sess(sess);
1043 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
1044 "qla_target(%u): %ssession for port %8phC "
1045 "(loop ID %d) reappeared\n", vha->vp_idx,
1046 sess->local ? "local " : "", sess->port_name,
1049 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
1050 "Reappeared sess %p\n", sess);
1052 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
1053 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
1056 if (sess && sess->local) {
1057 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
1058 "qla_target(%u): local session for "
1059 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
1060 fcport->port_name, sess->loop_id);
1063 ha->tgt.tgt_ops->put_sess(sess);
1064 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1068 * max_gen - specifies maximum session generation
1069 * at which this deletion requestion is still valid
1072 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
1074 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1075 struct qla_tgt_sess *sess;
1076 unsigned long flags;
1078 if (!vha->hw->tgt.tgt_ops)
1084 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
1085 if (tgt->tgt_stop) {
1086 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1089 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
1091 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1095 if (max_gen - sess->generation < 0) {
1096 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1098 "Ignoring stale deletion request for se_sess %p / sess %p"
1099 " for port %8phC, req_gen %d, sess_gen %d\n",
1100 sess->se_sess, sess, sess->port_name, max_gen,
1105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1108 qlt_schedule_sess_for_deletion(sess, false);
1109 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1112 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1114 struct qla_hw_data *ha = tgt->ha;
1115 unsigned long flags;
1118 * We need to protect against race, when tgt is freed before or
1121 spin_lock_irqsave(&ha->hardware_lock, flags);
1122 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1123 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
1124 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
1125 res = (tgt->sess_count == 0);
1126 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1131 /* Called by tcm_qla2xxx configfs code */
1132 int qlt_stop_phase1(struct qla_tgt *tgt)
1134 struct scsi_qla_host *vha = tgt->vha;
1135 struct qla_hw_data *ha = tgt->ha;
1136 unsigned long flags;
1138 mutex_lock(&qla_tgt_mutex);
1139 if (!vha->fc_vport) {
1140 struct Scsi_Host *sh = vha->host;
1141 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1144 spin_lock_irqsave(sh->host_lock, flags);
1145 npiv_vports = (fc_host->npiv_vports_inuse);
1146 spin_unlock_irqrestore(sh->host_lock, flags);
1149 mutex_unlock(&qla_tgt_mutex);
1153 if (tgt->tgt_stop || tgt->tgt_stopped) {
1154 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1155 "Already in tgt->tgt_stop or tgt_stopped state\n");
1156 mutex_unlock(&qla_tgt_mutex);
1160 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1163 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1164 * Lock is needed, because we still can get an incoming packet.
1166 mutex_lock(&vha->vha_tgt.tgt_mutex);
1167 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1169 qlt_clear_tgt_db(tgt);
1170 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1171 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1172 mutex_unlock(&qla_tgt_mutex);
1174 flush_delayed_work(&tgt->sess_del_work);
1176 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1177 "Waiting for sess works (tgt %p)", tgt);
1178 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1179 while (!list_empty(&tgt->sess_works_list)) {
1180 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1181 flush_scheduled_work();
1182 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1184 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1186 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1187 "Waiting for tgt %p: list_empty(sess_list)=%d "
1188 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
1191 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1194 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
1195 qlt_disable_vha(vha);
1197 /* Wait for sessions to clear out (just in case) */
1198 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1201 EXPORT_SYMBOL(qlt_stop_phase1);
1203 /* Called by tcm_qla2xxx configfs code */
1204 void qlt_stop_phase2(struct qla_tgt *tgt)
1206 struct qla_hw_data *ha = tgt->ha;
1207 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1208 unsigned long flags;
1210 if (tgt->tgt_stopped) {
1211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1212 "Already in tgt->tgt_stopped state\n");
1217 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1218 "Waiting for %d IRQ commands to complete (tgt %p)",
1219 tgt->irq_cmd_count, tgt);
1221 mutex_lock(&vha->vha_tgt.tgt_mutex);
1222 spin_lock_irqsave(&ha->hardware_lock, flags);
1223 while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) {
1224 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1226 spin_lock_irqsave(&ha->hardware_lock, flags);
1229 tgt->tgt_stopped = 1;
1230 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1231 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1233 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
1236 EXPORT_SYMBOL(qlt_stop_phase2);
1238 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1239 static void qlt_release(struct qla_tgt *tgt)
1241 scsi_qla_host_t *vha = tgt->vha;
1243 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
1244 qlt_stop_phase2(tgt);
1246 vha->vha_tgt.qla_tgt = NULL;
1248 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1249 "Release of tgt %p finished\n", tgt);
1254 /* ha->hardware_lock supposed to be held on entry */
1255 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1256 const void *param, unsigned int param_size)
1258 struct qla_tgt_sess_work_param *prm;
1259 unsigned long flags;
1261 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1263 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1264 "qla_target(%d): Unable to create session "
1265 "work, command will be refused", 0);
1269 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1270 "Scheduling work (type %d, prm %p)"
1271 " to find session for param %p (size %d, tgt %p)\n",
1272 type, prm, param, param_size, tgt);
1275 memcpy(&prm->tm_iocb, param, param_size);
1277 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1278 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1279 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1281 schedule_work(&tgt->sess_work);
1287 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1289 static void qlt_send_notify_ack(struct scsi_qla_host *vha,
1290 struct imm_ntfy_from_isp *ntfy,
1291 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1292 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1294 struct qla_hw_data *ha = vha->hw;
1296 struct nack_to_isp *nack;
1298 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1300 /* Send marker if required */
1301 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1304 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1306 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1307 "qla_target(%d): %s failed: unable to allocate "
1308 "request packet\n", vha->vp_idx, __func__);
1312 if (vha->vha_tgt.qla_tgt != NULL)
1313 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1315 pkt->entry_type = NOTIFY_ACK_TYPE;
1316 pkt->entry_count = 1;
1318 nack = (struct nack_to_isp *)pkt;
1319 nack->ox_id = ntfy->ox_id;
1321 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1322 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1323 nack->u.isp24.flags = ntfy->u.isp24.flags &
1324 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1326 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1327 nack->u.isp24.status = ntfy->u.isp24.status;
1328 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1329 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1330 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1331 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1332 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1333 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1334 nack->u.isp24.srr_reject_code = srr_reject_code;
1335 nack->u.isp24.srr_reject_code_expl = srr_explan;
1336 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1338 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1339 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1340 vha->vp_idx, nack->u.isp24.status);
1342 /* Memory Barrier */
1344 qla2x00_start_iocbs(vha, vha->req);
1348 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1350 static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1351 struct abts_recv_from_24xx *abts, uint32_t status,
1354 struct qla_hw_data *ha = vha->hw;
1355 struct abts_resp_to_24xx *resp;
1359 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1360 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1363 /* Send marker if required */
1364 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1367 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
1369 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1370 "qla_target(%d): %s failed: unable to allocate "
1371 "request packet", vha->vp_idx, __func__);
1375 resp->entry_type = ABTS_RESP_24XX;
1376 resp->entry_count = 1;
1377 resp->nport_handle = abts->nport_handle;
1378 resp->vp_index = vha->vp_idx;
1379 resp->sof_type = abts->sof_type;
1380 resp->exchange_address = abts->exchange_address;
1381 resp->fcp_hdr_le = abts->fcp_hdr_le;
1382 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1383 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1384 F_CTL_SEQ_INITIATIVE);
1385 p = (uint8_t *)&f_ctl;
1386 resp->fcp_hdr_le.f_ctl[0] = *p++;
1387 resp->fcp_hdr_le.f_ctl[1] = *p++;
1388 resp->fcp_hdr_le.f_ctl[2] = *p;
1390 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1391 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1392 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1393 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1394 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1395 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1397 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1398 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1399 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1400 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1401 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1402 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1404 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1405 if (status == FCP_TMF_CMPL) {
1406 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1407 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1408 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1409 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1410 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1411 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1413 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1414 resp->payload.ba_rjt.reason_code =
1415 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1416 /* Other bytes are zero */
1419 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1421 /* Memory Barrier */
1423 qla2x00_start_iocbs(vha, vha->req);
1427 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1429 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1430 struct abts_resp_from_24xx_fw *entry)
1432 struct ctio7_to_24xx *ctio;
1434 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1435 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1436 /* Send marker if required */
1437 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1440 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
1442 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1443 "qla_target(%d): %s failed: unable to allocate "
1444 "request packet\n", vha->vp_idx, __func__);
1449 * We've got on entrance firmware's response on by us generated
1450 * ABTS response. So, in it ID fields are reversed.
1453 ctio->entry_type = CTIO_TYPE7;
1454 ctio->entry_count = 1;
1455 ctio->nport_handle = entry->nport_handle;
1456 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1457 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1458 ctio->vp_index = vha->vp_idx;
1459 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1460 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1461 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1462 ctio->exchange_addr = entry->exchange_addr_to_abort;
1463 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1464 CTIO7_FLAGS_TERMINATE);
1465 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
1467 /* Memory Barrier */
1469 qla2x00_start_iocbs(vha, vha->req);
1471 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1472 FCP_TMF_CMPL, true);
1475 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1477 struct qla_tgt_sess_op *op;
1478 struct qla_tgt_cmd *cmd;
1480 spin_lock(&vha->cmd_list_lock);
1482 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1483 if (tag == op->atio.u.isp24.exchange_addr) {
1485 spin_unlock(&vha->cmd_list_lock);
1490 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1491 if (tag == cmd->atio.u.isp24.exchange_addr) {
1493 spin_unlock(&vha->cmd_list_lock);
1498 spin_unlock(&vha->cmd_list_lock);
1502 /* drop cmds for the given lun
1503 * XXX only looks for cmds on the port through which lun reset was recieved
1504 * XXX does not go through the list of other port (which may have cmds
1507 static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1508 uint32_t lun, uint8_t *s_id)
1510 struct qla_tgt_sess_op *op;
1511 struct qla_tgt_cmd *cmd;
1514 key = sid_to_key(s_id);
1515 spin_lock(&vha->cmd_list_lock);
1516 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1520 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1521 op_lun = scsilun_to_int(
1522 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1523 if (op_key == key && op_lun == lun)
1526 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1530 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1531 cmd_lun = scsilun_to_int(
1532 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1533 if (cmd_key == key && cmd_lun == lun)
1536 spin_unlock(&vha->cmd_list_lock);
1539 /* ha->hardware_lock supposed to be held on entry */
1540 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1541 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1543 struct qla_hw_data *ha = vha->hw;
1544 struct se_session *se_sess = sess->se_sess;
1545 struct qla_tgt_mgmt_cmd *mcmd;
1546 struct se_cmd *se_cmd;
1549 bool found_lun = false;
1551 spin_lock(&se_sess->sess_cmd_lock);
1552 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1553 struct qla_tgt_cmd *cmd =
1554 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1555 if (se_cmd->tag == abts->exchange_addr_to_abort) {
1556 lun = cmd->unpacked_lun;
1561 spin_unlock(&se_sess->sess_cmd_lock);
1563 /* cmd not in LIO lists, look in qla list */
1565 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1566 /* send TASK_ABORT response immediately */
1567 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
1570 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
1571 "unable to find cmd in driver or LIO for tag 0x%x\n",
1572 abts->exchange_addr_to_abort);
1577 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1578 "qla_target(%d): task abort (tag=%d)\n",
1579 vha->vp_idx, abts->exchange_addr_to_abort);
1581 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1583 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1584 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1585 vha->vp_idx, __func__);
1588 memset(mcmd, 0, sizeof(*mcmd));
1591 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1592 mcmd->reset_count = vha->hw->chip_reset;
1594 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
1595 abts->exchange_addr_to_abort);
1597 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1598 "qla_target(%d): tgt_ops->handle_tmr()"
1599 " failed: %d", vha->vp_idx, rc);
1600 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1608 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1610 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1611 struct abts_recv_from_24xx *abts)
1613 struct qla_hw_data *ha = vha->hw;
1614 struct qla_tgt_sess *sess;
1615 uint32_t tag = abts->exchange_addr_to_abort;
1618 unsigned long flags;
1620 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1621 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1622 "qla_target(%d): ABTS: Abort Sequence not "
1623 "supported\n", vha->vp_idx);
1624 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1628 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1629 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1630 "qla_target(%d): ABTS: Unknown Exchange "
1631 "Address received\n", vha->vp_idx);
1632 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1636 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1637 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1638 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1639 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1640 le32_to_cpu(abts->fcp_hdr_le.parameter));
1642 s_id[0] = abts->fcp_hdr_le.s_id[2];
1643 s_id[1] = abts->fcp_hdr_le.s_id[1];
1644 s_id[2] = abts->fcp_hdr_le.s_id[0];
1646 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1647 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1649 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1650 "qla_target(%d): task abort for non-existant session\n",
1652 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
1653 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1655 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1658 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1663 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1666 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1667 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1671 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1673 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1674 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1676 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1682 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1684 static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1685 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1687 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1688 struct ctio7_to_24xx *ctio;
1691 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1692 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1693 ha, atio, resp_code);
1695 /* Send marker if required */
1696 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1699 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1701 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1702 "qla_target(%d): %s failed: unable to allocate "
1703 "request packet\n", ha->vp_idx, __func__);
1707 ctio->entry_type = CTIO_TYPE7;
1708 ctio->entry_count = 1;
1709 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1710 ctio->nport_handle = mcmd->sess->loop_id;
1711 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1712 ctio->vp_index = ha->vp_idx;
1713 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1714 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1715 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1716 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1717 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1718 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
1719 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1720 ctio->u.status1.ox_id = cpu_to_le16(temp);
1721 ctio->u.status1.scsi_status =
1722 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1723 ctio->u.status1.response_len = cpu_to_le16(8);
1724 ctio->u.status1.sense_data[0] = resp_code;
1726 /* Memory Barrier */
1728 qla2x00_start_iocbs(ha, ha->req);
1731 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1733 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1735 EXPORT_SYMBOL(qlt_free_mcmd);
1737 /* callback from target fabric module code */
1738 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1740 struct scsi_qla_host *vha = mcmd->sess->vha;
1741 struct qla_hw_data *ha = vha->hw;
1742 unsigned long flags;
1744 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1745 "TM response mcmd (%p) status %#x state %#x",
1746 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1748 spin_lock_irqsave(&ha->hardware_lock, flags);
1750 if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) {
1752 * Either the port is not online or this request was from
1753 * previous life, just abort the processing.
1755 ql_dbg(ql_dbg_async, vha, 0xe100,
1756 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
1757 vha->flags.online, qla2x00_reset_active(vha),
1758 mcmd->reset_count, ha->chip_reset);
1759 ha->tgt.tgt_ops->free_mcmd(mcmd);
1760 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1764 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1765 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1768 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
1769 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1770 mcmd->fc_tm_rsp, false);
1772 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1776 * Make the callback for ->free_mcmd() to queue_work() and invoke
1777 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1778 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1779 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1780 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1781 * qlt_xmit_tm_rsp() returns here..
1783 ha->tgt.tgt_ops->free_mcmd(mcmd);
1784 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1786 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1789 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1791 struct qla_tgt_cmd *cmd = prm->cmd;
1793 BUG_ON(cmd->sg_cnt == 0);
1795 prm->sg = (struct scatterlist *)cmd->sg;
1796 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1797 cmd->sg_cnt, cmd->dma_data_direction);
1798 if (unlikely(prm->seg_cnt == 0))
1801 prm->cmd->sg_mapped = 1;
1803 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1805 * If greater than four sg entries then we need to allocate
1806 * the continuation entries
1808 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1809 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1810 prm->tgt->datasegs_per_cmd,
1811 prm->tgt->datasegs_per_cont);
1814 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1815 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1816 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1817 prm->tot_dsds = prm->seg_cnt;
1819 prm->tot_dsds = prm->seg_cnt;
1821 if (cmd->prot_sg_cnt) {
1822 prm->prot_sg = cmd->prot_sg;
1823 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1824 cmd->prot_sg, cmd->prot_sg_cnt,
1825 cmd->dma_data_direction);
1826 if (unlikely(prm->prot_seg_cnt == 0))
1829 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1830 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1831 /* Dif Bundling not support here */
1832 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1834 prm->tot_dsds += prm->prot_seg_cnt;
1836 prm->tot_dsds += prm->prot_seg_cnt;
1843 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1844 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1845 0, prm->cmd->sg_cnt);
1849 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
1851 struct qla_hw_data *ha = vha->hw;
1853 if (!cmd->sg_mapped)
1856 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1859 if (cmd->prot_sg_cnt)
1860 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1861 cmd->dma_data_direction);
1863 if (cmd->ctx_dsd_alloced)
1864 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1867 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
1870 static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1873 uint32_t cnt, cnt_in;
1875 if (vha->req->cnt < (req_cnt + 2)) {
1876 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
1877 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
1879 if (vha->req->ring_index < cnt)
1880 vha->req->cnt = cnt - vha->req->ring_index;
1882 vha->req->cnt = vha->req->length -
1883 (vha->req->ring_index - cnt);
1885 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1886 ql_dbg(ql_dbg_io, vha, 0x305a,
1887 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n",
1888 vha->vp_idx, vha->req->ring_index,
1889 vha->req->cnt, req_cnt, cnt, cnt_in,
1895 vha->req->cnt -= req_cnt;
1901 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1903 static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1905 /* Adjust ring index. */
1906 vha->req->ring_index++;
1907 if (vha->req->ring_index == vha->req->length) {
1908 vha->req->ring_index = 0;
1909 vha->req->ring_ptr = vha->req->ring;
1911 vha->req->ring_ptr++;
1913 return (cont_entry_t *)vha->req->ring_ptr;
1916 /* ha->hardware_lock supposed to be held on entry */
1917 static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1919 struct qla_hw_data *ha = vha->hw;
1922 h = ha->tgt.current_handle;
1923 /* always increment cmd handle */
1926 if (h > DEFAULT_OUTSTANDING_COMMANDS)
1927 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1928 if (h == ha->tgt.current_handle) {
1929 ql_dbg(ql_dbg_io, vha, 0x305b,
1930 "qla_target(%d): Ran out of "
1931 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1932 h = QLA_TGT_NULL_HANDLE;
1935 } while ((h == QLA_TGT_NULL_HANDLE) ||
1936 (h == QLA_TGT_SKIP_HANDLE) ||
1937 (ha->tgt.cmds[h-1] != NULL));
1939 if (h != QLA_TGT_NULL_HANDLE)
1940 ha->tgt.current_handle = h;
1945 /* ha->hardware_lock supposed to be held on entry */
1946 static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1947 struct scsi_qla_host *vha)
1950 struct ctio7_to_24xx *pkt;
1951 struct qla_hw_data *ha = vha->hw;
1952 struct atio_from_isp *atio = &prm->cmd->atio;
1955 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1957 memset(pkt, 0, sizeof(*pkt));
1959 pkt->entry_type = CTIO_TYPE7;
1960 pkt->entry_count = (uint8_t)prm->req_cnt;
1961 pkt->vp_index = vha->vp_idx;
1963 h = qlt_make_handle(vha);
1964 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1966 * CTIO type 7 from the firmware doesn't provide a way to
1967 * know the initiator's LOOP ID, hence we can't find
1968 * the session and, so, the command.
1972 ha->tgt.cmds[h-1] = prm->cmd;
1974 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1975 pkt->nport_handle = prm->cmd->loop_id;
1976 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1977 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1978 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1979 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1980 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1981 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
1982 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1983 pkt->u.status0.ox_id = cpu_to_le16(temp);
1984 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1990 * ha->hardware_lock supposed to be held on entry. We have already made sure
1991 * that there is sufficient amount of request entries to not drop it.
1993 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1994 struct scsi_qla_host *vha)
1997 uint32_t *dword_ptr;
1998 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2000 /* Build continuation packets */
2001 while (prm->seg_cnt > 0) {
2002 cont_a64_entry_t *cont_pkt64 =
2003 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
2006 * Make sure that from cont_pkt64 none of
2007 * 64-bit specific fields used for 32-bit
2008 * addressing. Cast to (cont_entry_t *) for
2012 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2014 cont_pkt64->entry_count = 1;
2015 cont_pkt64->sys_define = 0;
2017 if (enable_64bit_addressing) {
2018 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2020 (uint32_t *)&cont_pkt64->dseg_0_address;
2022 cont_pkt64->entry_type = CONTINUE_TYPE;
2024 (uint32_t *)&((cont_entry_t *)
2025 cont_pkt64)->dseg_0_address;
2028 /* Load continuation entry data segments */
2030 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
2031 cnt++, prm->seg_cnt--) {
2033 cpu_to_le32(pci_dma_lo32
2034 (sg_dma_address(prm->sg)));
2035 if (enable_64bit_addressing) {
2037 cpu_to_le32(pci_dma_hi32
2041 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2043 prm->sg = sg_next(prm->sg);
2049 * ha->hardware_lock supposed to be held on entry. We have already made sure
2050 * that there is sufficient amount of request entries to not drop it.
2052 static void qlt_load_data_segments(struct qla_tgt_prm *prm,
2053 struct scsi_qla_host *vha)
2056 uint32_t *dword_ptr;
2057 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2058 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2060 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2062 /* Setup packet address segment pointer */
2063 dword_ptr = pkt24->u.status0.dseg_0_address;
2065 /* Set total data segment count */
2067 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2069 if (prm->seg_cnt == 0) {
2070 /* No data transfer */
2076 /* If scatter gather */
2078 /* Load command entry data segments */
2080 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
2081 cnt++, prm->seg_cnt--) {
2083 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2084 if (enable_64bit_addressing) {
2086 cpu_to_le32(pci_dma_hi32(
2087 sg_dma_address(prm->sg)));
2089 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2091 prm->sg = sg_next(prm->sg);
2094 qlt_load_cont_data_segments(prm, vha);
2097 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2099 return cmd->bufflen > 0;
2103 * Called without ha->hardware_lock held
2105 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2106 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2107 uint32_t *full_req_cnt)
2109 struct qla_tgt *tgt = cmd->tgt;
2110 struct scsi_qla_host *vha = tgt->vha;
2111 struct qla_hw_data *ha = vha->hw;
2112 struct se_cmd *se_cmd = &cmd->se_cmd;
2116 prm->rq_result = scsi_status;
2117 prm->sense_buffer = &cmd->sense_buffer[0];
2118 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2122 prm->add_status_pkt = 0;
2124 /* Send marker if required */
2125 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2128 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2129 if (qlt_pci_map_calc_cnt(prm) != 0)
2133 *full_req_cnt = prm->req_cnt;
2135 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2136 prm->residual = se_cmd->residual_count;
2137 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
2138 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2139 prm->residual, se_cmd->tag,
2140 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2141 cmd->bufflen, prm->rq_result);
2142 prm->rq_result |= SS_RESIDUAL_UNDER;
2143 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2144 prm->residual = se_cmd->residual_count;
2145 ql_dbg(ql_dbg_io, vha, 0x305d,
2146 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2147 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2148 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2149 prm->rq_result |= SS_RESIDUAL_OVER;
2152 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2154 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2155 * ignored in *xmit_response() below
2157 if (qlt_has_data(cmd)) {
2158 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2159 (IS_FWI2_CAPABLE(ha) &&
2160 (prm->rq_result != 0))) {
2161 prm->add_status_pkt = 1;
2170 static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
2171 struct qla_tgt_cmd *cmd, int sending_sense)
2173 if (ha->tgt.enable_class_2)
2177 return cmd->conf_compl_supported;
2179 return ha->tgt.enable_explicit_conf &&
2180 cmd->conf_compl_supported;
2183 #ifdef CONFIG_QLA_TGT_DEBUG_SRR
2185 * Original taken from the XFS code
2187 static unsigned long qlt_srr_random(void)
2190 static unsigned long RandomValue;
2191 static DEFINE_SPINLOCK(lock);
2192 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
2196 unsigned long flags;
2198 spin_lock_irqsave(&lock, flags);
2200 RandomValue = jiffies;
2206 rv = 16807 * lo - 2836 * hi;
2210 spin_unlock_irqrestore(&lock, flags);
2214 static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
2216 #if 0 /* This is not a real status packets lost, so it won't lead to SRR */
2217 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
2219 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
2220 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
2221 "Dropping cmd %p (tag %d) status", cmd, se_cmd->tag);
2225 * It's currently not possible to simulate SRRs for FCP_WRITE without
2226 * a physical link layer failure, so don't even try here..
2228 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
2231 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
2232 ((qlt_srr_random() % 100) == 20)) {
2234 unsigned int tot_len = 0;
2237 leave = qlt_srr_random() % cmd->sg_cnt;
2239 for (i = 0; i < leave; i++)
2240 tot_len += cmd->sg[i].length;
2242 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
2243 "Cutting cmd %p (tag %d) buffer"
2244 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
2245 " cmd->sg_cnt %d)", cmd, se_cmd->tag, tot_len, leave,
2246 cmd->bufflen, cmd->sg_cnt);
2248 cmd->bufflen = tot_len;
2249 cmd->sg_cnt = leave;
2252 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
2253 unsigned int offset = qlt_srr_random() % cmd->bufflen;
2255 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
2256 "Cutting cmd %p (tag %d) buffer head "
2257 "to offset %d (cmd->bufflen %d)", cmd, se_cmd->tag, offset,
2260 *xmit_type &= ~QLA_TGT_XMIT_DATA;
2261 else if (qlt_set_data_offset(cmd, offset)) {
2262 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
2263 "qlt_set_data_offset() failed (tag %d)", se_cmd->tag);
2268 static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
2272 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2273 struct qla_tgt_prm *prm)
2275 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2276 (uint32_t)sizeof(ctio->u.status1.sense_data));
2277 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2278 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
2279 ctio->u.status0.flags |= cpu_to_le16(
2280 CTIO7_FLAGS_EXPLICIT_CONFORM |
2281 CTIO7_FLAGS_CONFORM_REQ);
2283 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2284 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2285 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2288 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
2289 if (prm->cmd->se_cmd.scsi_status != 0) {
2290 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
2291 "Skipping EXPLICIT_CONFORM and "
2292 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2293 "non GOOD status\n");
2294 goto skip_explict_conf;
2296 ctio->u.status1.flags |= cpu_to_le16(
2297 CTIO7_FLAGS_EXPLICIT_CONFORM |
2298 CTIO7_FLAGS_CONFORM_REQ);
2301 ctio->u.status1.flags &=
2302 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2303 ctio->u.status1.flags |=
2304 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2305 ctio->u.status1.scsi_status |=
2306 cpu_to_le16(SS_SENSE_LEN_VALID);
2307 ctio->u.status1.sense_length =
2308 cpu_to_le16(prm->sense_buffer_len);
2309 for (i = 0; i < prm->sense_buffer_len/4; i++)
2310 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2311 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2313 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
2316 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
2317 "qla_target(%d): %d bytes of sense "
2318 "lost", prm->tgt->ha->vp_idx,
2319 prm->sense_buffer_len % 4);
2325 ctio->u.status1.flags &=
2326 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2327 ctio->u.status1.flags |=
2328 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2329 ctio->u.status1.sense_length = 0;
2330 memset(ctio->u.status1.sense_data, 0,
2331 sizeof(ctio->u.status1.sense_data));
2334 /* Sense with len > 24, is it possible ??? */
2341 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2344 * Uncomment when corresponding SCSI changes are done.
2346 if (!sp->cmd->prot_chk)
2350 switch (se_cmd->prot_op) {
2351 case TARGET_PROT_DOUT_INSERT:
2352 case TARGET_PROT_DIN_STRIP:
2353 if (ql2xenablehba_err_chk >= 1)
2356 case TARGET_PROT_DOUT_PASS:
2357 case TARGET_PROT_DIN_PASS:
2358 if (ql2xenablehba_err_chk >= 2)
2361 case TARGET_PROT_DIN_INSERT:
2362 case TARGET_PROT_DOUT_STRIP:
2371 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
2375 qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
2377 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2379 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
2380 * have been immplemented by TCM, before AppTag is avail.
2381 * Look for modesense_handlers[]
2384 ctx->app_tag_mask[0] = 0x0;
2385 ctx->app_tag_mask[1] = 0x0;
2387 switch (se_cmd->prot_type) {
2388 case TARGET_DIF_TYPE0_PROT:
2390 * No check for ql2xenablehba_err_chk, as it would be an
2391 * I/O error if hba tag generation is not done.
2393 ctx->ref_tag = cpu_to_le32(lba);
2395 if (!qlt_hba_err_chk_enabled(se_cmd))
2398 /* enable ALL bytes of the ref tag */
2399 ctx->ref_tag_mask[0] = 0xff;
2400 ctx->ref_tag_mask[1] = 0xff;
2401 ctx->ref_tag_mask[2] = 0xff;
2402 ctx->ref_tag_mask[3] = 0xff;
2405 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2408 case TARGET_DIF_TYPE1_PROT:
2409 ctx->ref_tag = cpu_to_le32(lba);
2411 if (!qlt_hba_err_chk_enabled(se_cmd))
2414 /* enable ALL bytes of the ref tag */
2415 ctx->ref_tag_mask[0] = 0xff;
2416 ctx->ref_tag_mask[1] = 0xff;
2417 ctx->ref_tag_mask[2] = 0xff;
2418 ctx->ref_tag_mask[3] = 0xff;
2421 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2422 * match LBA in CDB + N
2424 case TARGET_DIF_TYPE2_PROT:
2425 ctx->ref_tag = cpu_to_le32(lba);
2427 if (!qlt_hba_err_chk_enabled(se_cmd))
2430 /* enable ALL bytes of the ref tag */
2431 ctx->ref_tag_mask[0] = 0xff;
2432 ctx->ref_tag_mask[1] = 0xff;
2433 ctx->ref_tag_mask[2] = 0xff;
2434 ctx->ref_tag_mask[3] = 0xff;
2437 /* For Type 3 protection: 16 bit GUARD only */
2438 case TARGET_DIF_TYPE3_PROT:
2439 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2440 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2447 qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2450 uint32_t transfer_length = 0;
2451 uint32_t data_bytes;
2453 uint8_t bundling = 1;
2455 struct crc_context *crc_ctx_pkt = NULL;
2456 struct qla_hw_data *ha;
2457 struct ctio_crc2_to_fw *pkt;
2458 dma_addr_t crc_ctx_dma;
2459 uint16_t fw_prot_opts = 0;
2460 struct qla_tgt_cmd *cmd = prm->cmd;
2461 struct se_cmd *se_cmd = &cmd->se_cmd;
2463 struct atio_from_isp *atio = &prm->cmd->atio;
2468 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2470 memset(pkt, 0, sizeof(*pkt));
2472 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2473 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2474 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2475 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2477 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2478 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2481 /* Compute dif len and adjust data len to incude protection */
2482 data_bytes = cmd->bufflen;
2483 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2485 switch (se_cmd->prot_op) {
2486 case TARGET_PROT_DIN_INSERT:
2487 case TARGET_PROT_DOUT_STRIP:
2488 transfer_length = data_bytes;
2489 data_bytes += dif_bytes;
2492 case TARGET_PROT_DIN_STRIP:
2493 case TARGET_PROT_DOUT_INSERT:
2494 case TARGET_PROT_DIN_PASS:
2495 case TARGET_PROT_DOUT_PASS:
2496 transfer_length = data_bytes + dif_bytes;
2504 if (!qlt_hba_err_chk_enabled(se_cmd))
2505 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2506 /* HBA error checking enabled */
2507 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2508 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2509 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2510 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2511 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2512 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2515 switch (se_cmd->prot_op) {
2516 case TARGET_PROT_DIN_INSERT:
2517 case TARGET_PROT_DOUT_INSERT:
2518 fw_prot_opts |= PO_MODE_DIF_INSERT;
2520 case TARGET_PROT_DIN_STRIP:
2521 case TARGET_PROT_DOUT_STRIP:
2522 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2524 case TARGET_PROT_DIN_PASS:
2525 case TARGET_PROT_DOUT_PASS:
2526 fw_prot_opts |= PO_MODE_DIF_PASS;
2527 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2529 default:/* Normal Request */
2530 fw_prot_opts |= PO_MODE_DIF_PASS;
2536 /* Update entry type to indicate Command Type CRC_2 IOCB */
2537 pkt->entry_type = CTIO_CRC2;
2538 pkt->entry_count = 1;
2539 pkt->vp_index = vha->vp_idx;
2541 h = qlt_make_handle(vha);
2542 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2544 * CTIO type 7 from the firmware doesn't provide a way to
2545 * know the initiator's LOOP ID, hence we can't find
2546 * the session and, so, the command.
2550 ha->tgt.cmds[h-1] = prm->cmd;
2553 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2554 pkt->nport_handle = prm->cmd->loop_id;
2555 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2556 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2557 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2558 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2559 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2561 /* silence compile warning */
2562 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2563 pkt->ox_id = cpu_to_le16(t16);
2565 t16 = (atio->u.isp24.attr << 9);
2566 pkt->flags |= cpu_to_le16(t16);
2567 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2569 /* Set transfer direction */
2570 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2571 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2572 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2573 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2576 pkt->dseg_count = prm->tot_dsds;
2577 /* Fibre channel byte count */
2578 pkt->transfer_length = cpu_to_le32(transfer_length);
2581 /* ----- CRC context -------- */
2583 /* Allocate CRC context from global pool */
2584 crc_ctx_pkt = cmd->ctx =
2585 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2588 goto crc_queuing_error;
2590 /* Zero out CTX area. */
2591 clr_ptr = (uint8_t *)crc_ctx_pkt;
2592 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2594 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2595 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2598 crc_ctx_pkt->handle = pkt->handle;
2600 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2602 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2603 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2604 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2608 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2611 * Configure Bundling if we need to fetch interlaving
2612 * protection PCI accesses
2614 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2615 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2616 crc_ctx_pkt->u.bundling.dseg_count =
2617 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2618 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2621 /* Finish the common fields of CRC pkt */
2622 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2623 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2624 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
2625 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
2628 /* Walks data segments */
2629 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
2631 if (!bundling && prm->prot_seg_cnt) {
2632 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2633 prm->tot_dsds, cmd))
2634 goto crc_queuing_error;
2635 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2636 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2637 goto crc_queuing_error;
2639 if (bundling && prm->prot_seg_cnt) {
2640 /* Walks dif segments */
2641 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
2643 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2644 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2645 prm->prot_seg_cnt, cmd))
2646 goto crc_queuing_error;
2651 /* Cleanup will be performed by the caller */
2653 return QLA_FUNCTION_FAILED;
2658 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2659 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2661 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2662 uint8_t scsi_status)
2664 struct scsi_qla_host *vha = cmd->vha;
2665 struct qla_hw_data *ha = vha->hw;
2666 struct ctio7_to_24xx *pkt;
2667 struct qla_tgt_prm prm;
2668 uint32_t full_req_cnt = 0;
2669 unsigned long flags = 0;
2672 spin_lock_irqsave(&ha->hardware_lock, flags);
2673 if (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
2674 cmd->state = QLA_TGT_STATE_PROCESSED;
2675 if (cmd->sess->logout_completed)
2676 /* no need to terminate. FW already freed exchange. */
2677 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2679 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
2680 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2683 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2685 memset(&prm, 0, sizeof(prm));
2686 qlt_check_srr_debug(cmd, &xmit_type);
2688 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
2689 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2690 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2691 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2694 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2696 if (unlikely(res != 0)) {
2700 spin_lock_irqsave(&ha->hardware_lock, flags);
2702 if (xmit_type == QLA_TGT_XMIT_STATUS)
2703 vha->tgt_counters.core_qla_snd_status++;
2705 vha->tgt_counters.core_qla_que_buf++;
2707 if (!vha->flags.online || cmd->reset_count != ha->chip_reset) {
2709 * Either the port is not online or this request was from
2710 * previous life, just abort the processing.
2712 cmd->state = QLA_TGT_STATE_PROCESSED;
2713 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2714 ql_dbg(ql_dbg_async, vha, 0xe101,
2715 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
2716 vha->flags.online, qla2x00_reset_active(vha),
2717 cmd->reset_count, ha->chip_reset);
2718 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2722 /* Does F/W have an IOCBs for this request */
2723 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2725 goto out_unmap_unlock;
2727 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2728 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2730 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2731 if (unlikely(res != 0)) {
2732 vha->req->cnt += full_req_cnt;
2733 goto out_unmap_unlock;
2736 pkt = (struct ctio7_to_24xx *)prm.pkt;
2738 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2739 pkt->u.status0.flags |=
2740 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2741 CTIO7_FLAGS_STATUS_MODE_0);
2743 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2744 qlt_load_data_segments(&prm, vha);
2746 if (prm.add_status_pkt == 0) {
2747 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2748 pkt->u.status0.scsi_status =
2749 cpu_to_le16(prm.rq_result);
2750 pkt->u.status0.residual =
2751 cpu_to_le32(prm.residual);
2752 pkt->u.status0.flags |= cpu_to_le16(
2753 CTIO7_FLAGS_SEND_STATUS);
2754 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2755 pkt->u.status0.flags |=
2757 CTIO7_FLAGS_EXPLICIT_CONFORM |
2758 CTIO7_FLAGS_CONFORM_REQ);
2764 * We have already made sure that there is sufficient
2765 * amount of request entries to not drop HW lock in
2768 struct ctio7_to_24xx *ctio =
2769 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2771 ql_dbg(ql_dbg_io, vha, 0x305e,
2772 "Building additional status packet 0x%p.\n",
2776 * T10Dif: ctio_crc2_to_fw overlay ontop of
2779 memcpy(ctio, pkt, sizeof(*ctio));
2780 /* reset back to CTIO7 */
2781 ctio->entry_count = 1;
2782 ctio->entry_type = CTIO_TYPE7;
2783 ctio->dseg_count = 0;
2784 ctio->u.status1.flags &= ~cpu_to_le16(
2785 CTIO7_FLAGS_DATA_IN);
2787 /* Real finish is ctio_m1's finish */
2788 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
2789 pkt->u.status0.flags |= cpu_to_le16(
2790 CTIO7_FLAGS_DONT_RET_CTIO);
2792 /* qlt_24xx_init_ctio_to_isp will correct
2793 * all neccessary fields that's part of CTIO7.
2794 * There should be no residual of CTIO-CRC2 data.
2796 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2798 pr_debug("Status CTIO7: %p\n", ctio);
2801 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2804 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
2805 cmd->cmd_sent_to_fw = 1;
2807 /* Memory Barrier */
2809 qla2x00_start_iocbs(vha, vha->req);
2810 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2815 qlt_unmap_sg(vha, cmd);
2816 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2820 EXPORT_SYMBOL(qlt_xmit_response);
2822 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2824 struct ctio7_to_24xx *pkt;
2825 struct scsi_qla_host *vha = cmd->vha;
2826 struct qla_hw_data *ha = vha->hw;
2827 struct qla_tgt *tgt = cmd->tgt;
2828 struct qla_tgt_prm prm;
2829 unsigned long flags;
2832 memset(&prm, 0, sizeof(prm));
2838 /* Send marker if required */
2839 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2842 /* Calculate number of entries and segments required */
2843 if (qlt_pci_map_calc_cnt(&prm) != 0)
2846 spin_lock_irqsave(&ha->hardware_lock, flags);
2848 if (!vha->flags.online || (cmd->reset_count != ha->chip_reset) ||
2849 (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)) {
2851 * Either the port is not online or this request was from
2852 * previous life, just abort the processing.
2854 cmd->state = QLA_TGT_STATE_NEED_DATA;
2855 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2856 ql_dbg(ql_dbg_async, vha, 0xe102,
2857 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2858 vha->flags.online, qla2x00_reset_active(vha),
2859 cmd->reset_count, ha->chip_reset);
2860 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2864 /* Does F/W have an IOCBs for this request */
2865 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2867 goto out_unlock_free_unmap;
2868 if (cmd->se_cmd.prot_op)
2869 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2871 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2873 if (unlikely(res != 0)) {
2874 vha->req->cnt += prm.req_cnt;
2875 goto out_unlock_free_unmap;
2878 pkt = (struct ctio7_to_24xx *)prm.pkt;
2879 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2880 CTIO7_FLAGS_STATUS_MODE_0);
2882 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2883 qlt_load_data_segments(&prm, vha);
2885 cmd->state = QLA_TGT_STATE_NEED_DATA;
2886 cmd->cmd_sent_to_fw = 1;
2888 /* Memory Barrier */
2890 qla2x00_start_iocbs(vha, vha->req);
2891 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2895 out_unlock_free_unmap:
2896 qlt_unmap_sg(vha, cmd);
2897 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2901 EXPORT_SYMBOL(qlt_rdy_to_xfer);
2905 * Checks the guard or meta-data for the type of error
2906 * detected by the HBA.
2909 qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2910 struct ctio_crc_from_fw *sts)
2912 uint8_t *ap = &sts->actual_dif[0];
2913 uint8_t *ep = &sts->expected_dif[0];
2914 uint32_t e_ref_tag, a_ref_tag;
2915 uint16_t e_app_tag, a_app_tag;
2916 uint16_t e_guard, a_guard;
2917 uint64_t lba = cmd->se_cmd.t_task_lba;
2919 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2920 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2921 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2923 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2924 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2925 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2927 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2928 "iocb(s) %p Returned STATUS.\n", sts);
2930 ql_dbg(ql_dbg_tgt, vha, 0xf075,
2931 "dif check TGT cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n",
2932 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2933 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2937 * For type 3: ref & app tag is all 'f's
2938 * For type 0,1,2: app tag is all 'f's
2940 if ((a_app_tag == 0xffff) &&
2941 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2942 (a_ref_tag == 0xffffffff))) {
2943 uint32_t blocks_done;
2945 /* 2TB boundary case covered automatically with this */
2946 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2947 cmd->se_cmd.bad_sector = e_ref_tag;
2948 cmd->se_cmd.pi_err = 0;
2949 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2950 "need to return scsi good\n");
2952 /* Update protection tag */
2953 if (cmd->prot_sg_cnt) {
2954 uint32_t i, k = 0, num_ent;
2955 struct scatterlist *sg, *sgl;
2960 /* Patch the corresponding protection tags */
2961 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2962 num_ent = sg_dma_len(sg) / 8;
2963 if (k + num_ent < blocks_done) {
2971 if (k != blocks_done) {
2972 ql_log(ql_log_warn, vha, 0xf076,
2973 "unexpected tag values tag:lba=%u:%llu)\n",
2974 e_ref_tag, (unsigned long long)lba);
2979 struct sd_dif_tuple *spt;
2981 * This section came from initiator. Is it valid here?
2982 * should ulp be override with actual val???
2984 spt = page_address(sg_page(sg)) + sg->offset;
2987 spt->app_tag = 0xffff;
2988 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2989 spt->ref_tag = 0xffffffff;
2997 if (e_guard != a_guard) {
2998 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2999 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
3001 ql_log(ql_log_warn, vha, 0xe076,
3002 "Guard ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
3003 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3004 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3005 a_guard, e_guard, cmd);
3010 if (e_ref_tag != a_ref_tag) {
3011 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
3012 cmd->se_cmd.bad_sector = e_ref_tag;
3014 ql_log(ql_log_warn, vha, 0xe077,
3015 "Ref Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
3016 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3017 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3018 a_guard, e_guard, cmd);
3022 /* check appl tag */
3023 if (e_app_tag != a_app_tag) {
3024 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
3025 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
3027 ql_log(ql_log_warn, vha, 0xe078,
3028 "App Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
3029 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3030 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3031 a_guard, e_guard, cmd);
3039 /* If hardware_lock held on entry, might drop it, then reaquire */
3040 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3041 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3042 struct imm_ntfy_from_isp *ntfy)
3044 struct nack_to_isp *nack;
3045 struct qla_hw_data *ha = vha->hw;
3049 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3050 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3052 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
3054 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3055 "qla_target(%d): %s failed: unable to allocate "
3056 "request packet\n", vha->vp_idx, __func__);
3060 pkt->entry_type = NOTIFY_ACK_TYPE;
3061 pkt->entry_count = 1;
3062 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3064 nack = (struct nack_to_isp *)pkt;
3065 nack->ox_id = ntfy->ox_id;
3067 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3068 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3069 nack->u.isp24.flags = ntfy->u.isp24.flags &
3070 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3074 nack->u.isp24.flags |=
3075 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3077 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3078 nack->u.isp24.status = ntfy->u.isp24.status;
3079 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3080 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3081 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3082 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3083 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3084 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3086 qla2x00_start_iocbs(vha, vha->req);
3090 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3091 struct imm_ntfy_from_isp *imm, int ha_locked)
3093 unsigned long flags = 0;
3096 if (qlt_issue_marker(vha, ha_locked) < 0)
3100 rc = __qlt_send_term_imm_notif(vha, imm);
3104 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3109 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3110 rc = __qlt_send_term_imm_notif(vha, imm);
3114 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3119 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3122 /* If hardware_lock held on entry, might drop it, then reaquire */
3123 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3124 static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
3125 struct qla_tgt_cmd *cmd,
3126 struct atio_from_isp *atio)
3128 struct ctio7_to_24xx *ctio24;
3129 struct qla_hw_data *ha = vha->hw;
3134 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3136 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
3138 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3139 "qla_target(%d): %s failed: unable to allocate "
3140 "request packet\n", vha->vp_idx, __func__);
3145 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3146 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3147 "qla_target(%d): Terminating cmd %p with "
3148 "incorrect state %d\n", vha->vp_idx, cmd,
3154 vha->tgt_counters.num_term_xchg_sent++;
3155 pkt->entry_count = 1;
3156 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3158 ctio24 = (struct ctio7_to_24xx *)pkt;
3159 ctio24->entry_type = CTIO_TYPE7;
3160 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
3161 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3162 ctio24->vp_index = vha->vp_idx;
3163 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3164 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3165 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3166 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3167 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
3168 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
3169 CTIO7_FLAGS_TERMINATE);
3170 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3171 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3173 /* Most likely, it isn't needed */
3174 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3175 &atio->u.isp24.fcp_cmnd.add_cdb[
3176 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3177 if (ctio24->u.status1.residual != 0)
3178 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3180 /* Memory Barrier */
3182 qla2x00_start_iocbs(vha, vha->req);
3186 static void qlt_send_term_exchange(struct scsi_qla_host *vha,
3187 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3190 unsigned long flags = 0;
3193 if (qlt_issue_marker(vha, ha_locked) < 0)
3197 rc = __qlt_send_term_exchange(vha, cmd, atio);
3199 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3202 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3203 rc = __qlt_send_term_exchange(vha, cmd, atio);
3205 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3208 if (cmd && !ul_abort && !cmd->aborted) {
3210 qlt_unmap_sg(vha, cmd);
3211 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3215 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3220 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3222 struct list_head free_list;
3223 struct qla_tgt_cmd *cmd, *tcmd;
3225 vha->hw->tgt.leak_exchg_thresh_hold =
3226 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3229 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3230 INIT_LIST_HEAD(&free_list);
3231 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3233 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3234 list_del(&cmd->cmd_list);
3235 /* This cmd was never sent to TCM. There is no need
3236 * to schedule free or call free_cmd
3239 vha->hw->tgt.num_qfull_cmds_alloc--;
3242 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3245 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3247 uint32_t total_leaked;
3249 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3251 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3252 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3254 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3255 "Chip reset due to exchange starvation: %d/%d.\n",
3256 total_leaked, vha->hw->cur_fw_xcb_count);
3258 if (IS_P3P_TYPE(vha->hw))
3259 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3261 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3262 qla2xxx_wake_dpc(vha);
3267 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3269 struct qla_tgt *tgt = cmd->tgt;
3270 struct scsi_qla_host *vha = tgt->vha;
3271 struct se_cmd *se_cmd = &cmd->se_cmd;
3272 unsigned long flags;
3274 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3275 "qla_target(%d): terminating exchange for aborted cmd=%p "
3276 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3279 spin_lock_irqsave(&cmd->cmd_lock, flags);
3281 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3283 * It's normal to see 2 calls in this path:
3284 * 1) XFER Rdy completion + CMD_T_ABORT
3285 * 2) TCM TMR - drain_state_list
3287 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
3288 "multiple abort. %p transport_state %x, t_state %x,"
3289 " se_cmd_flags %x \n", cmd, cmd->se_cmd.transport_state,
3290 cmd->se_cmd.t_state,cmd->se_cmd.se_cmd_flags);
3294 cmd->cmd_flags |= BIT_6;
3295 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3297 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1);
3300 EXPORT_SYMBOL(qlt_abort_cmd);
3302 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3304 struct qla_tgt_sess *sess = cmd->sess;
3306 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3307 "%s: se_cmd[%p] ox_id %04x\n",
3308 __func__, &cmd->se_cmd,
3309 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3311 BUG_ON(cmd->cmd_in_wq);
3314 qlt_unmap_sg(cmd->vha, cmd);
3317 qlt_decr_num_pend_cmds(cmd->vha);
3319 BUG_ON(cmd->sg_mapped);
3320 cmd->jiffies_at_free = get_jiffies_64();
3321 if (unlikely(cmd->free_sg))
3324 if (!sess || !sess->se_sess) {
3328 cmd->jiffies_at_free = get_jiffies_64();
3329 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3331 EXPORT_SYMBOL(qlt_free_cmd);
3333 /* ha->hardware_lock supposed to be held on entry */
3334 static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
3335 struct qla_tgt_cmd *cmd, void *ctio)
3337 struct qla_tgt_srr_ctio *sc;
3338 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
3339 struct qla_tgt_srr_imm *imm;
3342 cmd->cmd_flags |= BIT_15;
3344 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
3345 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
3348 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
3349 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
3354 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
3357 /* IRQ is already OFF */
3358 spin_lock(&tgt->srr_lock);
3359 sc->srr_id = tgt->ctio_srr_id;
3360 list_add_tail(&sc->srr_list_entry,
3361 &tgt->srr_ctio_list);
3362 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
3363 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
3364 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3366 list_for_each_entry(imm, &tgt->srr_imm_list,
3368 if (imm->srr_id == sc->srr_id) {
3374 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
3375 "Scheduling srr work\n");
3376 schedule_work(&tgt->srr_work);
3378 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
3379 "qla_target(%d): imm_srr_id "
3380 "== ctio_srr_id (%d), but there is no "
3381 "corresponding SRR IMM, deleting CTIO "
3382 "SRR %p\n", vha->vp_idx,
3383 tgt->ctio_srr_id, sc);
3384 list_del(&sc->srr_list_entry);
3385 spin_unlock(&tgt->srr_lock);
3391 spin_unlock(&tgt->srr_lock);
3393 struct qla_tgt_srr_imm *ti;
3395 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
3396 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
3398 spin_lock(&tgt->srr_lock);
3399 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
3401 if (imm->srr_id == tgt->ctio_srr_id) {
3402 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
3403 "IMM SRR %p deleted (id %d)\n",
3405 list_del(&imm->srr_list_entry);
3406 qlt_reject_free_srr_imm(vha, imm, 1);
3409 spin_unlock(&tgt->srr_lock);
3418 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3420 static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
3421 struct qla_tgt_cmd *cmd, uint32_t status)
3426 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3428 cpu_to_le16(OF_TERM_EXCH));
3433 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
3438 /* ha->hardware_lock supposed to be held on entry */
3439 static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
3442 struct qla_hw_data *ha = vha->hw;
3445 if (ha->tgt.cmds[handle] != NULL) {
3446 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
3447 ha->tgt.cmds[handle] = NULL;
3453 /* ha->hardware_lock supposed to be held on entry */
3454 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3455 uint32_t handle, void *ctio)
3457 struct qla_tgt_cmd *cmd = NULL;
3459 /* Clear out internal marks */
3460 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
3461 CTIO_INTERMEDIATE_HANDLE_MARK);
3463 if (handle != QLA_TGT_NULL_HANDLE) {
3464 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
3467 /* handle-1 is actually used */
3468 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
3469 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3470 "qla_target(%d): Wrong handle %x received\n",
3471 vha->vp_idx, handle);
3474 cmd = qlt_get_cmd(vha, handle);
3475 if (unlikely(cmd == NULL)) {
3476 ql_dbg(ql_dbg_tgt, vha, 0xe053,
3477 "qla_target(%d): Suspicious: unable to "
3478 "find the command with handle %x\n", vha->vp_idx,
3482 } else if (ctio != NULL) {
3483 /* We can't get loop ID from CTIO7 */
3484 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3485 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3486 "support NULL handles\n", vha->vp_idx);
3493 /* hardware_lock should be held by caller. */
3495 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3497 struct qla_hw_data *ha = vha->hw;
3501 qlt_unmap_sg(vha, cmd);
3503 handle = qlt_make_handle(vha);
3505 /* TODO: fix debug message type and ids. */
3506 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3507 ql_dbg(ql_dbg_io, vha, 0xff00,
3508 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
3509 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3510 cmd->write_data_transferred = 0;
3511 cmd->state = QLA_TGT_STATE_DATA_IN;
3513 ql_dbg(ql_dbg_io, vha, 0xff01,
3514 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
3516 ha->tgt.tgt_ops->handle_data(cmd);
3519 ql_dbg(ql_dbg_io, vha, 0xff03,
3520 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
3525 cmd->cmd_flags |= BIT_17;
3526 ha->tgt.tgt_ops->free_cmd(cmd);
3530 qlt_host_reset_handler(struct qla_hw_data *ha)
3532 struct qla_tgt_cmd *cmd;
3533 unsigned long flags;
3534 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
3535 scsi_qla_host_t *vha = NULL;
3536 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
3539 if (!base_vha->hw->tgt.tgt_ops)
3542 if (!tgt || qla_ini_mode_enabled(base_vha)) {
3543 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
3544 "Target mode disabled\n");
3548 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
3549 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
3550 base_vha->dpc_flags);
3552 spin_lock_irqsave(&ha->hardware_lock, flags);
3553 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
3554 cmd = qlt_get_cmd(base_vha, i);
3557 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
3559 qlt_abort_cmd_on_host_reset(vha, cmd);
3561 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3566 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3568 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
3569 uint32_t status, void *ctio)
3571 struct qla_hw_data *ha = vha->hw;
3572 struct se_cmd *se_cmd;
3573 struct qla_tgt_cmd *cmd;
3575 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3576 /* That could happen only in case of an error/reset/abort */
3577 if (status != CTIO_SUCCESS) {
3578 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3579 "Intermediate CTIO received"
3580 " (status %x)\n", status);
3585 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
3589 se_cmd = &cmd->se_cmd;
3590 cmd->cmd_sent_to_fw = 0;
3592 qlt_unmap_sg(vha, cmd);
3594 if (unlikely(status != CTIO_SUCCESS)) {
3595 switch (status & 0xFFFF) {
3596 case CTIO_LIP_RESET:
3597 case CTIO_TARGET_RESET:
3599 /* driver request abort via Terminate exchange */
3601 case CTIO_INVALID_RX_ID:
3603 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3604 "qla_target(%d): CTIO with "
3605 "status %#x received, state %x, se_cmd %p, "
3606 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3607 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3608 status, cmd->state, se_cmd);
3611 case CTIO_PORT_LOGGED_OUT:
3612 case CTIO_PORT_UNAVAILABLE:
3615 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3617 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3618 "qla_target(%d): CTIO with %s status %x "
3619 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3620 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
3621 status, cmd->state, se_cmd);
3623 if (logged_out && cmd->sess) {
3625 * Session is already logged out, but we need
3626 * to notify initiator, who's not aware of this
3628 cmd->sess->logout_on_delete = 0;
3629 cmd->sess->send_els_logo = 1;
3630 qlt_schedule_sess_for_deletion(cmd->sess, true);
3634 case CTIO_SRR_RECEIVED:
3635 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
3636 "qla_target(%d): CTIO with SRR_RECEIVED"
3637 " status %x received (state %x, se_cmd %p)\n",
3638 vha->vp_idx, status, cmd->state, se_cmd);
3639 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
3644 case CTIO_DIF_ERROR: {
3645 struct ctio_crc_from_fw *crc =
3646 (struct ctio_crc_from_fw *)ctio;
3647 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3648 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
3649 vha->vp_idx, status, cmd->state, se_cmd,
3650 *((u64 *)&crc->actual_dif[0]),
3651 *((u64 *)&crc->expected_dif[0]));
3653 if (qlt_handle_dif_error(vha, cmd, ctio)) {
3654 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3655 /* scsi Write/xfer rdy complete */
3658 /* scsi read/xmit respond complete
3659 * call handle dif to send scsi status
3660 * rather than terminate exchange.
3662 cmd->state = QLA_TGT_STATE_PROCESSED;
3663 ha->tgt.tgt_ops->handle_dif_err(cmd);
3667 /* Need to generate a SCSI good completion.
3668 * because FW did not send scsi status.
3676 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
3677 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
3678 vha->vp_idx, status, cmd->state, se_cmd);
3683 /* "cmd->aborted" means
3684 * cmd is already aborted/terminated, we don't
3685 * need to terminate again. The exchange is already
3686 * cleaned up/freed at FW level. Just cleanup at driver
3689 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3691 cmd->cmd_flags |= BIT_13;
3692 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3698 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3699 cmd->cmd_flags |= BIT_12;
3700 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3701 cmd->state = QLA_TGT_STATE_DATA_IN;
3703 if (status == CTIO_SUCCESS)
3704 cmd->write_data_transferred = 1;
3706 ha->tgt.tgt_ops->handle_data(cmd);
3708 } else if (cmd->aborted) {
3709 cmd->cmd_flags |= BIT_18;
3710 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3711 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
3713 cmd->cmd_flags |= BIT_19;
3714 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3715 "qla_target(%d): A command in state (%d) should "
3716 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3719 if (unlikely(status != CTIO_SUCCESS) &&
3721 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3725 ha->tgt.tgt_ops->free_cmd(cmd);
3728 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3733 switch (task_codes) {
3734 case ATIO_SIMPLE_QUEUE:
3735 fcp_task_attr = TCM_SIMPLE_TAG;
3737 case ATIO_HEAD_OF_QUEUE:
3738 fcp_task_attr = TCM_HEAD_TAG;
3740 case ATIO_ORDERED_QUEUE:
3741 fcp_task_attr = TCM_ORDERED_TAG;
3743 case ATIO_ACA_QUEUE:
3744 fcp_task_attr = TCM_ACA_TAG;
3747 fcp_task_attr = TCM_SIMPLE_TAG;
3750 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3751 "qla_target: unknown task code %x, use ORDERED instead\n",
3753 fcp_task_attr = TCM_ORDERED_TAG;
3757 return fcp_task_attr;
3760 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3763 * Process context for I/O path into tcm_qla2xxx code
3765 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
3767 scsi_qla_host_t *vha = cmd->vha;
3768 struct qla_hw_data *ha = vha->hw;
3769 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
3770 struct qla_tgt_sess *sess = cmd->sess;
3771 struct atio_from_isp *atio = &cmd->atio;
3773 unsigned long flags;
3774 uint32_t data_length;
3775 int ret, fcp_task_attr, data_dir, bidi = 0;
3778 cmd->cmd_flags |= BIT_1;
3783 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
3784 "cmd with tag %u is aborted\n",
3785 cmd->atio.u.isp24.exchange_addr);
3789 spin_lock_init(&cmd->cmd_lock);
3790 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
3791 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
3792 cmd->unpacked_lun = scsilun_to_int(
3793 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3795 if (atio->u.isp24.fcp_cmnd.rddata &&
3796 atio->u.isp24.fcp_cmnd.wrdata) {
3798 data_dir = DMA_TO_DEVICE;
3799 } else if (atio->u.isp24.fcp_cmnd.rddata)
3800 data_dir = DMA_FROM_DEVICE;
3801 else if (atio->u.isp24.fcp_cmnd.wrdata)
3802 data_dir = DMA_TO_DEVICE;
3804 data_dir = DMA_NONE;
3806 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3807 atio->u.isp24.fcp_cmnd.task_attr);
3808 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3809 &atio->u.isp24.fcp_cmnd.add_cdb[
3810 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3812 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3813 fcp_task_attr, data_dir, bidi);
3817 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3819 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
3820 ha->tgt.tgt_ops->put_sess(sess);
3821 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
3825 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
3827 * cmd has not sent to target yet, so pass NULL as the second
3828 * argument to qlt_send_term_exchange() and free the memory here.
3830 cmd->cmd_flags |= BIT_2;
3831 spin_lock_irqsave(&ha->hardware_lock, flags);
3832 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0);
3834 qlt_decr_num_pend_cmds(vha);
3835 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3836 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3838 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
3839 ha->tgt.tgt_ops->put_sess(sess);
3840 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
3843 static void qlt_do_work(struct work_struct *work)
3845 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
3846 scsi_qla_host_t *vha = cmd->vha;
3847 unsigned long flags;
3849 spin_lock_irqsave(&vha->cmd_list_lock, flags);
3850 list_del(&cmd->cmd_list);
3851 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
3856 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
3857 struct qla_tgt_sess *sess,
3858 struct atio_from_isp *atio)
3860 struct se_session *se_sess = sess->se_sess;
3861 struct qla_tgt_cmd *cmd;
3864 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3868 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3869 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3871 memcpy(&cmd->atio, atio, sizeof(*atio));
3872 cmd->state = QLA_TGT_STATE_NEW;
3873 cmd->tgt = vha->vha_tgt.qla_tgt;
3874 qlt_incr_num_pend_cmds(vha);
3876 cmd->se_cmd.map_tag = tag;
3878 cmd->loop_id = sess->loop_id;
3879 cmd->conf_compl_supported = sess->conf_compl_supported;
3882 cmd->jiffies_at_alloc = get_jiffies_64();
3884 cmd->reset_count = vha->hw->chip_reset;
3889 static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
3892 static void qlt_create_sess_from_atio(struct work_struct *work)
3894 struct qla_tgt_sess_op *op = container_of(work,
3895 struct qla_tgt_sess_op, work);
3896 scsi_qla_host_t *vha = op->vha;
3897 struct qla_hw_data *ha = vha->hw;
3898 struct qla_tgt_sess *sess;
3899 struct qla_tgt_cmd *cmd;
3900 unsigned long flags;
3901 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
3903 spin_lock_irqsave(&vha->cmd_list_lock, flags);
3904 list_del(&op->cmd_list);
3905 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
3908 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
3909 "sess_op with tag %u is aborted\n",
3910 op->atio.u.isp24.exchange_addr);
3914 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
3915 "qla_target(%d): Unable to find wwn login"
3916 " (s_id %x:%x:%x), trying to create it manually\n",
3917 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
3919 if (op->atio.u.raw.entry_count > 1) {
3920 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
3921 "Dropping multy entry atio %p\n", &op->atio);
3925 sess = qlt_make_local_sess(vha, s_id);
3926 /* sess has an extra creation ref. */
3931 * Now obtain a pre-allocated session tag using the original op->atio
3932 * packet header, and dispatch into __qlt_do_work() using the existing
3935 cmd = qlt_get_tag(vha, sess, &op->atio);
3937 spin_lock_irqsave(&ha->hardware_lock, flags);
3938 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
3939 ha->tgt.tgt_ops->put_sess(sess);
3940 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3945 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release
3946 * the extra reference taken above by qlt_make_local_sess()
3953 spin_lock_irqsave(&ha->hardware_lock, flags);
3954 qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0);
3955 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3960 /* ha->hardware_lock supposed to be held on entry */
3961 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3962 struct atio_from_isp *atio)
3964 struct qla_hw_data *ha = vha->hw;
3965 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
3966 struct qla_tgt_sess *sess;
3967 struct qla_tgt_cmd *cmd;
3969 if (unlikely(tgt->tgt_stop)) {
3970 ql_dbg(ql_dbg_io, vha, 0x3061,
3971 "New command while device %p is shutting down\n", tgt);
3975 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
3976 if (unlikely(!sess)) {
3977 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
3982 memcpy(&op->atio, atio, sizeof(*atio));
3985 spin_lock(&vha->cmd_list_lock);
3986 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
3987 spin_unlock(&vha->cmd_list_lock);
3989 INIT_WORK(&op->work, qlt_create_sess_from_atio);
3990 queue_work(qla_tgt_wq, &op->work);
3994 /* Another WWN used to have our s_id. Our PLOGI scheduled its
3995 * session deletion, but it's still in sess_del_work wq */
3996 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
3997 ql_dbg(ql_dbg_io, vha, 0x3061,
3998 "New command while old session %p is being deleted\n",
4004 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4006 kref_get(&sess->se_sess->sess_kref);
4008 cmd = qlt_get_tag(vha, sess, atio);
4010 ql_dbg(ql_dbg_io, vha, 0x3062,
4011 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4012 ha->tgt.tgt_ops->put_sess(sess);
4017 cmd->cmd_flags |= BIT_0;
4018 cmd->se_cmd.cpuid = ha->msix_count ?
4019 ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND;
4021 spin_lock(&vha->cmd_list_lock);
4022 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4023 spin_unlock(&vha->cmd_list_lock);
4025 INIT_WORK(&cmd->work, qlt_do_work);
4026 if (ha->msix_count) {
4027 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4028 queue_work_on(smp_processor_id(), qla_tgt_wq,
4031 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4034 queue_work(qla_tgt_wq, &cmd->work);
4040 /* ha->hardware_lock supposed to be held on entry */
4041 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
4042 int fn, void *iocb, int flags)
4044 struct scsi_qla_host *vha = sess->vha;
4045 struct qla_hw_data *ha = vha->hw;
4046 struct qla_tgt_mgmt_cmd *mcmd;
4047 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4051 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4053 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4054 "qla_target(%d): Allocation of management "
4055 "command failed, some commands and their data could "
4056 "leak\n", vha->vp_idx);
4059 memset(mcmd, 0, sizeof(*mcmd));
4063 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4064 sizeof(mcmd->orig_iocb.imm_ntfy));
4066 mcmd->tmr_func = fn;
4067 mcmd->flags = flags;
4068 mcmd->reset_count = vha->hw->chip_reset;
4071 case QLA_TGT_CLEAR_ACA:
4072 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
4073 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
4074 tmr_func = TMR_CLEAR_ACA;
4077 case QLA_TGT_TARGET_RESET:
4078 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
4079 "qla_target(%d): TARGET_RESET received\n",
4081 tmr_func = TMR_TARGET_WARM_RESET;
4084 case QLA_TGT_LUN_RESET:
4085 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
4086 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
4087 tmr_func = TMR_LUN_RESET;
4088 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4091 case QLA_TGT_CLEAR_TS:
4092 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
4093 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
4094 tmr_func = TMR_CLEAR_TASK_SET;
4097 case QLA_TGT_ABORT_TS:
4098 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
4099 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
4100 tmr_func = TMR_ABORT_TASK_SET;
4103 case QLA_TGT_ABORT_ALL:
4104 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
4105 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
4110 case QLA_TGT_ABORT_ALL_SESS:
4111 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
4112 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
4117 case QLA_TGT_NEXUS_LOSS_SESS:
4118 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
4119 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
4124 case QLA_TGT_NEXUS_LOSS:
4125 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
4126 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
4131 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
4132 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
4133 sess->vha->vp_idx, fn);
4134 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4138 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
4140 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4141 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4142 sess->vha->vp_idx, res);
4143 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4150 /* ha->hardware_lock supposed to be held on entry */
4151 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4153 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4154 struct qla_hw_data *ha = vha->hw;
4155 struct qla_tgt *tgt;
4156 struct qla_tgt_sess *sess;
4157 uint32_t lun, unpacked_lun;
4159 unsigned long flags;
4161 tgt = vha->vha_tgt.qla_tgt;
4163 lun = a->u.isp24.fcp_cmnd.lun;
4164 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4166 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4167 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4168 a->u.isp24.fcp_hdr.s_id);
4169 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4171 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4174 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4175 "qla_target(%d): task mgmt fn 0x%x for "
4176 "non-existant session\n", vha->vp_idx, fn);
4177 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4178 sizeof(struct atio_from_isp));
4181 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)
4184 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4187 /* ha->hardware_lock supposed to be held on entry */
4188 static int __qlt_abort_task(struct scsi_qla_host *vha,
4189 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
4191 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4192 struct qla_hw_data *ha = vha->hw;
4193 struct qla_tgt_mgmt_cmd *mcmd;
4194 uint32_t lun, unpacked_lun;
4197 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4199 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4200 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4201 vha->vp_idx, __func__);
4204 memset(mcmd, 0, sizeof(*mcmd));
4207 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4208 sizeof(mcmd->orig_iocb.imm_ntfy));
4210 lun = a->u.isp24.fcp_cmnd.lun;
4211 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4212 mcmd->reset_count = vha->hw->chip_reset;
4214 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
4215 le16_to_cpu(iocb->u.isp2x.seq_id));
4217 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4218 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4220 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4227 /* ha->hardware_lock supposed to be held on entry */
4228 static int qlt_abort_task(struct scsi_qla_host *vha,
4229 struct imm_ntfy_from_isp *iocb)
4231 struct qla_hw_data *ha = vha->hw;
4232 struct qla_tgt_sess *sess;
4234 unsigned long flags;
4236 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4238 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4239 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4240 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4243 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4244 "qla_target(%d): task abort for unexisting "
4245 "session\n", vha->vp_idx);
4246 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4247 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4250 return __qlt_abort_task(vha, iocb, sess);
4253 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4255 if (fcport->tgt_session) {
4256 if (rc != MBS_COMMAND_COMPLETE) {
4257 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4258 "%s: se_sess %p / sess %p from"
4259 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4260 " LOGO failed: %#x\n",
4262 fcport->tgt_session->se_sess,
4263 fcport->tgt_session,
4264 fcport->port_name, fcport->loop_id,
4265 fcport->d_id.b.domain, fcport->d_id.b.area,
4266 fcport->d_id.b.al_pa, rc);
4269 fcport->tgt_session->logout_completed = 1;
4274 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4276 * Schedules sessions with matching port_id/loop_id but different wwn for
4277 * deletion. Returns existing session with matching wwn if present.
4280 static struct qla_tgt_sess *
4281 qlt_find_sess_invalidate_other(struct qla_tgt *tgt, uint64_t wwn,
4282 port_id_t port_id, uint16_t loop_id, struct qla_tgt_sess **conflict_sess)
4284 struct qla_tgt_sess *sess = NULL, *other_sess;
4287 *conflict_sess = NULL;
4289 list_for_each_entry(other_sess, &tgt->sess_list, sess_list_entry) {
4291 other_wwn = wwn_to_u64(other_sess->port_name);
4293 if (wwn == other_wwn) {
4299 /* find other sess with nport_id collision */
4300 if (port_id.b24 == other_sess->s_id.b24) {
4301 if (loop_id != other_sess->loop_id) {
4302 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000c,
4303 "Invalidating sess %p loop_id %d wwn %llx.\n",
4304 other_sess, other_sess->loop_id, other_wwn);
4307 * logout_on_delete is set by default, but another
4308 * session that has the same s_id/loop_id combo
4309 * might have cleared it when requested this session
4310 * deletion, so don't touch it
4312 qlt_schedule_sess_for_deletion(other_sess, true);
4315 * Another wwn used to have our s_id/loop_id
4316 * kill the session, but don't free the loop_id
4318 other_sess->keep_nport_handle = 1;
4319 *conflict_sess = other_sess;
4320 qlt_schedule_sess_for_deletion(other_sess,
4326 /* find other sess with nport handle collision */
4327 if (loop_id == other_sess->loop_id) {
4328 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000d,
4329 "Invalidating sess %p loop_id %d wwn %llx.\n",
4330 other_sess, other_sess->loop_id, other_wwn);
4332 /* Same loop_id but different s_id
4333 * Ok to kill and logout */
4334 qlt_schedule_sess_for_deletion(other_sess, true);
4341 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4342 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4344 struct qla_tgt_sess_op *op;
4345 struct qla_tgt_cmd *cmd;
4349 key = (((u32)s_id->b.domain << 16) |
4350 ((u32)s_id->b.area << 8) |
4351 ((u32)s_id->b.al_pa));
4353 spin_lock(&vha->cmd_list_lock);
4354 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4355 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4356 if (op_key == key) {
4361 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4362 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4363 if (cmd_key == key) {
4368 spin_unlock(&vha->cmd_list_lock);
4374 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4376 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4377 struct imm_ntfy_from_isp *iocb)
4379 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4380 struct qla_hw_data *ha = vha->hw;
4381 struct qla_tgt_sess *sess = NULL, *conflict_sess = NULL;
4387 qlt_plogi_ack_t *pla;
4388 unsigned long flags;
4390 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4392 port_id.b.domain = iocb->u.isp24.port_id[2];
4393 port_id.b.area = iocb->u.isp24.port_id[1];
4394 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4395 port_id.b.rsvd_1 = 0;
4397 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4399 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
4400 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
4401 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
4403 /* res = 1 means ack at the end of thread
4404 * res = 0 means ack async/later.
4406 switch (iocb->u.isp24.status_subcode) {
4409 /* Mark all stale commands in qla_tgt_wq for deletion */
4410 abort_cmds_for_s_id(vha, &port_id);
4413 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4414 sess = qlt_find_sess_invalidate_other(tgt, wwn,
4415 port_id, loop_id, &conflict_sess);
4416 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4419 if (IS_SW_RESV_ADDR(port_id) || (!sess && !conflict_sess)) {
4424 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4426 qlt_send_term_imm_notif(vha, iocb, 1);
4435 qlt_plogi_ack_link(vha, pla, conflict_sess,
4436 QLT_PLOGI_LINK_CONFLICT);
4441 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4443 * Under normal circumstances we want to release nport handle
4444 * during LOGO process to avoid nport handle leaks inside FW.
4445 * The exception is when LOGO is done while another PLOGI with
4446 * the same nport handle is waiting as might be the case here.
4447 * Note: there is always a possibily of a race where session
4448 * deletion has already started for other reasons (e.g. ACL
4449 * removal) and now PLOGI arrives:
4450 * 1. if PLOGI arrived in FW after nport handle has been freed,
4451 * FW must have assigned this PLOGI a new/same handle and we
4452 * can proceed ACK'ing it as usual when session deletion
4454 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4455 * bit reached it, the handle has now been released. We'll
4456 * get an error when we ACK this PLOGI. Nothing will be sent
4457 * back to initiator. Initiator should eventually retry
4458 * PLOGI and situation will correct itself.
4460 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4461 (sess->s_id.b24 == port_id.b24));
4462 qlt_schedule_sess_for_deletion(sess, true);
4466 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4469 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4470 sess = qlt_find_sess_invalidate_other(tgt, wwn, port_id,
4471 loop_id, &conflict_sess);
4472 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4475 if (conflict_sess) {
4476 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4477 "PRLI with conflicting sess %p port %8phC\n",
4478 conflict_sess, conflict_sess->port_name);
4479 qlt_send_term_imm_notif(vha, iocb, 1);
4485 if (sess->deleted) {
4487 * Impatient initiator sent PRLI before last
4488 * PLOGI could finish. Will force him to re-try,
4489 * while last one finishes.
4491 ql_log(ql_log_warn, sess->vha, 0xf095,
4492 "sess %p PRLI received, before plogi ack.\n",
4494 qlt_send_term_imm_notif(vha, iocb, 1);
4500 * This shouldn't happen under normal circumstances,
4501 * since we have deleted the old session during PLOGI
4503 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
4504 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4505 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4508 sess->loop_id = loop_id;
4509 sess->s_id = port_id;
4512 sess->conf_compl_supported = 1;
4515 res = 1; /* send notify ack */
4517 /* Make session global (not used in fabric mode) */
4518 if (ha->current_topology != ISP_CFG_F) {
4519 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4520 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4521 qla2xxx_wake_dpc(vha);
4523 /* todo: else - create sess here. */
4524 res = 1; /* send notify ack */
4531 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4536 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4537 if (tgt->link_reinit_iocb_pending) {
4538 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4540 tgt->link_reinit_iocb_pending = 0;
4542 res = 1; /* send notify ack */
4546 case ELS_FLOGI: /* should never happen */
4548 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4549 "qla_target(%d): Unsupported ELS command %x "
4550 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4551 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4558 static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
4562 * FIXME: Reject non zero SRR relative offset until we can test
4563 * this code properly.
4565 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
4568 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
4569 size_t first_offset = 0, rem_offset = offset, tmp = 0;
4570 int i, sg_srr_cnt, bufflen = 0;
4572 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
4573 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
4574 "cmd->sg_cnt: %u, direction: %d\n",
4575 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
4577 if (!cmd->sg || !cmd->sg_cnt) {
4578 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
4579 "Missing cmd->sg or zero cmd->sg_cnt in"
4580 " qla_tgt_set_data_offset\n");
4584 * Walk the current cmd->sg list until we locate the new sg_srr_start
4586 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
4587 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
4588 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
4589 i, sg, sg_page(sg), sg->length, sg->offset);
4591 if ((sg->length + tmp) > offset) {
4592 first_offset = rem_offset;
4594 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
4595 "Found matching sg[%d], using %p as sg_srr_start, "
4596 "and using first_offset: %zu\n", i, sg,
4601 rem_offset -= sg->length;
4604 if (!sg_srr_start) {
4605 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
4606 "Unable to locate sg_srr_start for offset: %u\n", offset);
4609 sg_srr_cnt = (cmd->sg_cnt - i);
4611 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
4613 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
4614 "Unable to allocate sgp\n");
4617 sg_init_table(sg_srr, sg_srr_cnt);
4620 * Walk the remaining list for sg_srr_start, mapping to the newly
4621 * allocated sg_srr taking first_offset into account.
4623 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
4625 sg_set_page(sgp, sg_page(sg),
4626 (sg->length - first_offset), first_offset);
4629 sg_set_page(sgp, sg_page(sg), sg->length, 0);
4631 bufflen += sgp->length;
4639 cmd->sg_cnt = sg_srr_cnt;
4640 cmd->bufflen = bufflen;
4641 cmd->offset += offset;
4644 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
4645 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
4647 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
4649 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
4652 if (cmd->sg_cnt < 0)
4655 if (cmd->bufflen < 0)
4662 static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
4663 uint32_t srr_rel_offs, int *xmit_type)
4665 int res = 0, rel_offs;
4667 rel_offs = srr_rel_offs - cmd->offset;
4668 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
4669 srr_rel_offs, rel_offs);
4671 *xmit_type = QLA_TGT_XMIT_ALL;
4674 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
4675 "qla_target(%d): SRR rel_offs (%d) < 0",
4676 cmd->vha->vp_idx, rel_offs);
4678 } else if (rel_offs == cmd->bufflen)
4679 *xmit_type = QLA_TGT_XMIT_STATUS;
4680 else if (rel_offs > 0)
4681 res = qlt_set_data_offset(cmd, rel_offs);
4686 /* No locks, thread context */
4687 static void qlt_handle_srr(struct scsi_qla_host *vha,
4688 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
4690 struct imm_ntfy_from_isp *ntfy =
4691 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
4692 struct qla_hw_data *ha = vha->hw;
4693 struct qla_tgt_cmd *cmd = sctio->cmd;
4694 struct se_cmd *se_cmd = &cmd->se_cmd;
4695 unsigned long flags;
4696 int xmit_type = 0, resp = 0;
4700 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
4701 srr_ui = ntfy->u.isp24.srr_ui;
4703 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
4708 spin_lock_irqsave(&ha->hardware_lock, flags);
4709 qlt_send_notify_ack(vha, ntfy,
4710 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4711 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4712 xmit_type = QLA_TGT_XMIT_STATUS;
4715 case SRR_IU_DATA_IN:
4716 if (!cmd->sg || !cmd->sg_cnt) {
4717 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
4718 "Unable to process SRR_IU_DATA_IN due to"
4719 " missing cmd->sg, state: %d\n", cmd->state);
4723 if (se_cmd->scsi_status != 0) {
4724 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
4725 "Rejecting SRR_IU_DATA_IN with non GOOD "
4729 cmd->bufflen = se_cmd->data_length;
4731 if (qlt_has_data(cmd)) {
4732 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
4734 spin_lock_irqsave(&ha->hardware_lock, flags);
4735 qlt_send_notify_ack(vha, ntfy,
4736 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4737 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4740 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
4741 "qla_target(%d): SRR for in data for cmd without them (tag %lld, SCSI status %d), reject",
4742 vha->vp_idx, se_cmd->tag,
4743 cmd->se_cmd.scsi_status);
4747 case SRR_IU_DATA_OUT:
4748 if (!cmd->sg || !cmd->sg_cnt) {
4749 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
4750 "Unable to process SRR_IU_DATA_OUT due to"
4751 " missing cmd->sg\n");
4755 if (se_cmd->scsi_status != 0) {
4756 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
4757 "Rejecting SRR_IU_DATA_OUT"
4758 " with non GOOD scsi_status\n");
4761 cmd->bufflen = se_cmd->data_length;
4763 if (qlt_has_data(cmd)) {
4764 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
4766 spin_lock_irqsave(&ha->hardware_lock, flags);
4767 qlt_send_notify_ack(vha, ntfy,
4768 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4769 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4770 if (xmit_type & QLA_TGT_XMIT_DATA) {
4771 cmd->cmd_flags |= BIT_8;
4772 qlt_rdy_to_xfer(cmd);
4775 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
4776 "qla_target(%d): SRR for out data for cmd without them (tag %lld, SCSI status %d), reject",
4777 vha->vp_idx, se_cmd->tag, cmd->se_cmd.scsi_status);
4782 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
4783 "qla_target(%d): Unknown srr_ui value %x",
4784 vha->vp_idx, srr_ui);
4788 /* Transmit response in case of status and data-in cases */
4790 cmd->cmd_flags |= BIT_7;
4791 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
4797 spin_lock_irqsave(&ha->hardware_lock, flags);
4798 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
4799 NOTIFY_ACK_SRR_FLAGS_REJECT,
4800 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4801 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4802 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
4803 cmd->state = QLA_TGT_STATE_DATA_IN;
4806 cmd->cmd_flags |= BIT_9;
4807 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
4809 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4812 static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
4813 struct qla_tgt_srr_imm *imm, int ha_locked)
4815 struct qla_hw_data *ha = vha->hw;
4816 unsigned long flags = 0;
4820 spin_lock_irqsave(&ha->hardware_lock, flags);
4823 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
4824 NOTIFY_ACK_SRR_FLAGS_REJECT,
4825 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4826 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4830 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4836 static void qlt_handle_srr_work(struct work_struct *work)
4838 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
4839 struct scsi_qla_host *vha = tgt->vha;
4840 struct qla_tgt_srr_ctio *sctio;
4841 unsigned long flags;
4843 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
4847 spin_lock_irqsave(&tgt->srr_lock, flags);
4848 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
4849 struct qla_tgt_srr_imm *imm, *i, *ti;
4850 struct qla_tgt_cmd *cmd;
4851 struct se_cmd *se_cmd;
4854 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
4856 if (i->srr_id == sctio->srr_id) {
4857 list_del(&i->srr_list_entry);
4859 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
4860 "qla_target(%d): There must be "
4861 "only one IMM SRR per CTIO SRR "
4862 "(IMM SRR %p, id %d, CTIO %p\n",
4863 vha->vp_idx, i, i->srr_id, sctio);
4864 qlt_reject_free_srr_imm(tgt->vha, i, 0);
4870 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
4871 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
4875 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
4876 "Not found matching IMM for SRR CTIO (id %d)\n",
4880 list_del(&sctio->srr_list_entry);
4882 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4886 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
4887 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
4896 se_cmd = &cmd->se_cmd;
4898 cmd->sg_cnt = se_cmd->t_data_nents;
4899 cmd->sg = se_cmd->t_data_sg;
4901 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
4902 "SRR cmd %p (se_cmd %p, tag %lld, op %x), sg_cnt=%d, offset=%d",
4903 cmd, &cmd->se_cmd, se_cmd->tag, se_cmd->t_task_cdb ?
4904 se_cmd->t_task_cdb[0] : 0, cmd->sg_cnt, cmd->offset);
4906 qlt_handle_srr(vha, sctio, imm);
4912 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4915 /* ha->hardware_lock supposed to be held on entry */
4916 static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
4917 struct imm_ntfy_from_isp *iocb)
4919 struct qla_tgt_srr_imm *imm;
4920 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4921 struct qla_tgt_srr_ctio *sctio;
4925 ql_log(ql_log_warn, vha, 0xf02d, "qla_target(%d): SRR received\n",
4928 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
4930 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
4932 /* IRQ is already OFF */
4933 spin_lock(&tgt->srr_lock);
4934 imm->srr_id = tgt->imm_srr_id;
4935 list_add_tail(&imm->srr_list_entry,
4936 &tgt->srr_imm_list);
4937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
4938 "IMM NTFY SRR %p added (id %d, ui %x)\n",
4939 imm, imm->srr_id, iocb->u.isp24.srr_ui);
4940 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
4942 list_for_each_entry(sctio, &tgt->srr_ctio_list,
4944 if (sctio->srr_id == imm->srr_id) {
4950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
4951 "Scheduling srr work\n");
4952 schedule_work(&tgt->srr_work);
4954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
4955 "qla_target(%d): imm_srr_id "
4956 "== ctio_srr_id (%d), but there is no "
4957 "corresponding SRR CTIO, deleting IMM "
4958 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
4960 list_del(&imm->srr_list_entry);
4964 spin_unlock(&tgt->srr_lock);
4968 spin_unlock(&tgt->srr_lock);
4970 struct qla_tgt_srr_ctio *ts;
4972 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
4973 "qla_target(%d): Unable to allocate SRR IMM "
4974 "entry, SRR request will be rejected\n", vha->vp_idx);
4976 /* IRQ is already OFF */
4977 spin_lock(&tgt->srr_lock);
4978 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
4980 if (sctio->srr_id == tgt->imm_srr_id) {
4981 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
4982 "CTIO SRR %p deleted (id %d)\n",
4983 sctio, sctio->srr_id);
4984 list_del(&sctio->srr_list_entry);
4985 qlt_send_term_exchange(vha, sctio->cmd,
4986 &sctio->cmd->atio, 1, 0);
4990 spin_unlock(&tgt->srr_lock);
4997 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
4998 NOTIFY_ACK_SRR_FLAGS_REJECT,
4999 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
5000 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
5004 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5006 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5007 struct imm_ntfy_from_isp *iocb)
5009 struct qla_hw_data *ha = vha->hw;
5010 uint32_t add_flags = 0;
5011 int send_notify_ack = 1;
5014 status = le16_to_cpu(iocb->u.isp2x.status);
5016 case IMM_NTFY_LIP_RESET:
5018 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5019 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5020 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5021 iocb->u.isp24.status_subcode);
5023 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5024 send_notify_ack = 0;
5028 case IMM_NTFY_LIP_LINK_REINIT:
5030 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5032 "qla_target(%d): LINK REINIT (loop %#x, "
5033 "subcode %x)\n", vha->vp_idx,
5034 le16_to_cpu(iocb->u.isp24.nport_handle),
5035 iocb->u.isp24.status_subcode);
5036 if (tgt->link_reinit_iocb_pending) {
5037 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
5040 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5041 tgt->link_reinit_iocb_pending = 1;
5043 * QLogic requires to wait after LINK REINIT for possible
5044 * PDISC or ADISC ELS commands
5046 send_notify_ack = 0;
5050 case IMM_NTFY_PORT_LOGOUT:
5051 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5052 "qla_target(%d): Port logout (loop "
5053 "%#x, subcode %x)\n", vha->vp_idx,
5054 le16_to_cpu(iocb->u.isp24.nport_handle),
5055 iocb->u.isp24.status_subcode);
5057 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5058 send_notify_ack = 0;
5059 /* The sessions will be cleared in the callback, if needed */
5062 case IMM_NTFY_GLBL_TPRLO:
5063 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5064 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5065 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5066 send_notify_ack = 0;
5067 /* The sessions will be cleared in the callback, if needed */
5070 case IMM_NTFY_PORT_CONFIG:
5071 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5072 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5074 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5075 send_notify_ack = 0;
5076 /* The sessions will be cleared in the callback, if needed */
5079 case IMM_NTFY_GLBL_LOGO:
5080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5081 "qla_target(%d): Link failure detected\n",
5083 /* I_T nexus loss */
5084 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5085 send_notify_ack = 0;
5088 case IMM_NTFY_IOCB_OVERFLOW:
5089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5090 "qla_target(%d): Cannot provide requested "
5091 "capability (IOCB overflowed the immediate notify "
5092 "resource count)\n", vha->vp_idx);
5095 case IMM_NTFY_ABORT_TASK:
5096 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5097 "qla_target(%d): Abort Task (S %08x I %#x -> "
5098 "L %#x)\n", vha->vp_idx,
5099 le16_to_cpu(iocb->u.isp2x.seq_id),
5100 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5101 le16_to_cpu(iocb->u.isp2x.lun));
5102 if (qlt_abort_task(vha, iocb) == 0)
5103 send_notify_ack = 0;
5106 case IMM_NTFY_RESOURCE:
5107 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5108 "qla_target(%d): Out of resources, host %ld\n",
5109 vha->vp_idx, vha->host_no);
5112 case IMM_NTFY_MSG_RX:
5113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5114 "qla_target(%d): Immediate notify task %x\n",
5115 vha->vp_idx, iocb->u.isp2x.task_flags);
5116 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5117 send_notify_ack = 0;
5121 if (qlt_24xx_handle_els(vha, iocb) == 0)
5122 send_notify_ack = 0;
5126 qlt_prepare_srr_imm(vha, iocb);
5127 send_notify_ack = 0;
5131 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5132 "qla_target(%d): Received unknown immediate "
5133 "notify status %x\n", vha->vp_idx, status);
5137 if (send_notify_ack)
5138 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
5142 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5143 * This function sends busy to ISP 2xxx or 24xx.
5145 static int __qlt_send_busy(struct scsi_qla_host *vha,
5146 struct atio_from_isp *atio, uint16_t status)
5148 struct ctio7_to_24xx *ctio24;
5149 struct qla_hw_data *ha = vha->hw;
5151 struct qla_tgt_sess *sess = NULL;
5152 unsigned long flags;
5154 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5155 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5156 atio->u.isp24.fcp_hdr.s_id);
5157 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5159 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
5162 /* Sending marker isn't necessary, since we called from ISR */
5164 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
5166 ql_dbg(ql_dbg_io, vha, 0x3063,
5167 "qla_target(%d): %s failed: unable to allocate "
5168 "request packet", vha->vp_idx, __func__);
5172 vha->tgt_counters.num_q_full_sent++;
5173 pkt->entry_count = 1;
5174 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5176 ctio24 = (struct ctio7_to_24xx *)pkt;
5177 ctio24->entry_type = CTIO_TYPE7;
5178 ctio24->nport_handle = sess->loop_id;
5179 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5180 ctio24->vp_index = vha->vp_idx;
5181 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5182 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5183 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5184 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5185 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
5187 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5188 CTIO7_FLAGS_DONT_RET_CTIO);
5190 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5191 * if the explicit conformation is used.
5193 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5194 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5195 /* Memory Barrier */
5197 qla2x00_start_iocbs(vha, vha->req);
5202 * This routine is used to allocate a command for either a QFull condition
5203 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5207 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5208 struct atio_from_isp *atio, uint16_t status, int qfull)
5210 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5211 struct qla_hw_data *ha = vha->hw;
5212 struct qla_tgt_sess *sess;
5213 struct se_session *se_sess;
5214 struct qla_tgt_cmd *cmd;
5217 if (unlikely(tgt->tgt_stop)) {
5218 ql_dbg(ql_dbg_io, vha, 0x300a,
5219 "New command while device %p is shutting down\n", tgt);
5223 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5224 vha->hw->tgt.num_qfull_cmds_dropped++;
5225 if (vha->hw->tgt.num_qfull_cmds_dropped >
5226 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
5227 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
5228 vha->hw->tgt.num_qfull_cmds_dropped;
5230 ql_dbg(ql_dbg_io, vha, 0x3068,
5231 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5232 vha->vp_idx, __func__,
5233 vha->hw->tgt.num_qfull_cmds_dropped);
5235 qlt_chk_exch_leak_thresh_hold(vha);
5239 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5240 (vha, atio->u.isp24.fcp_hdr.s_id);
5244 se_sess = sess->se_sess;
5246 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5250 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5252 ql_dbg(ql_dbg_io, vha, 0x3009,
5253 "qla_target(%d): %s: Allocation of cmd failed\n",
5254 vha->vp_idx, __func__);
5256 vha->hw->tgt.num_qfull_cmds_dropped++;
5257 if (vha->hw->tgt.num_qfull_cmds_dropped >
5258 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
5259 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
5260 vha->hw->tgt.num_qfull_cmds_dropped;
5262 qlt_chk_exch_leak_thresh_hold(vha);
5266 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5268 qlt_incr_num_pend_cmds(vha);
5269 INIT_LIST_HEAD(&cmd->cmd_list);
5270 memcpy(&cmd->atio, atio, sizeof(*atio));
5272 cmd->tgt = vha->vha_tgt.qla_tgt;
5274 cmd->reset_count = vha->hw->chip_reset;
5279 /* NOTE: borrowing the state field to carry the status */
5280 cmd->state = status;
5282 cmd->term_exchg = 1;
5284 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5286 vha->hw->tgt.num_qfull_cmds_alloc++;
5287 if (vha->hw->tgt.num_qfull_cmds_alloc >
5288 vha->hw->qla_stats.stat_max_qfull_cmds_alloc)
5289 vha->hw->qla_stats.stat_max_qfull_cmds_alloc =
5290 vha->hw->tgt.num_qfull_cmds_alloc;
5294 qlt_free_qfull_cmds(struct scsi_qla_host *vha)
5296 struct qla_hw_data *ha = vha->hw;
5297 unsigned long flags;
5298 struct qla_tgt_cmd *cmd, *tcmd;
5299 struct list_head free_list;
5302 if (list_empty(&ha->tgt.q_full_list))
5305 INIT_LIST_HEAD(&free_list);
5307 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
5309 if (list_empty(&ha->tgt.q_full_list)) {
5310 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5314 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
5316 /* cmd->state is a borrowed field to hold status */
5317 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
5318 else if (cmd->term_exchg)
5319 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
5325 ql_dbg(ql_dbg_io, vha, 0x3006,
5326 "%s: busy sent for ox_id[%04x]\n", __func__,
5327 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5328 else if (cmd->term_exchg)
5329 ql_dbg(ql_dbg_io, vha, 0x3007,
5330 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5331 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5333 ql_dbg(ql_dbg_io, vha, 0x3008,
5334 "%s: Unexpected cmd in QFull list %p\n", __func__,
5337 list_del(&cmd->cmd_list);
5338 list_add_tail(&cmd->cmd_list, &free_list);
5340 /* piggy back on hardware_lock for protection */
5341 vha->hw->tgt.num_qfull_cmds_alloc--;
5343 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5347 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5348 list_del(&cmd->cmd_list);
5349 /* This cmd was never sent to TCM. There is no need
5350 * to schedule free or call free_cmd
5358 qlt_send_busy(struct scsi_qla_host *vha,
5359 struct atio_from_isp *atio, uint16_t status)
5363 rc = __qlt_send_busy(vha, atio, status);
5365 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5369 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
5370 struct atio_from_isp *atio)
5372 struct qla_hw_data *ha = vha->hw;
5375 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5378 status = temp_sam_status;
5379 qlt_send_busy(vha, atio, status);
5383 /* ha->hardware_lock supposed to be held on entry */
5384 /* called via callback from qla2xxx */
5385 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5386 struct atio_from_isp *atio, uint8_t ha_locked)
5388 struct qla_hw_data *ha = vha->hw;
5389 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5391 unsigned long flags;
5393 if (unlikely(tgt == NULL)) {
5394 ql_dbg(ql_dbg_io, vha, 0x3064,
5395 "ATIO pkt, but no tgt (ha %p)", ha);
5399 * In tgt_stop mode we also should allow all requests to pass.
5400 * Otherwise, some commands can stuck.
5403 tgt->atio_irq_cmd_count++;
5405 switch (atio->u.raw.entry_type) {
5407 if (unlikely(atio->u.isp24.exchange_addr ==
5408 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
5409 ql_dbg(ql_dbg_io, vha, 0x3065,
5410 "qla_target(%d): ATIO_TYPE7 "
5411 "received with UNKNOWN exchange address, "
5412 "sending QUEUE_FULL\n", vha->vp_idx);
5414 spin_lock_irqsave(&ha->hardware_lock, flags);
5415 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
5417 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5423 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5424 rc = qlt_chk_qfull_thresh_hold(vha, atio);
5426 tgt->atio_irq_cmd_count--;
5429 rc = qlt_handle_cmd_for_atio(vha, atio);
5431 rc = qlt_handle_task_mgmt(vha, atio);
5433 if (unlikely(rc != 0)) {
5437 (&ha->hardware_lock, flags);
5439 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5440 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5442 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
5446 spin_unlock_irqrestore
5447 (&ha->hardware_lock, flags);
5450 if (tgt->tgt_stop) {
5451 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5452 "qla_target: Unable to send "
5453 "command to target for req, "
5456 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5457 "qla_target(%d): Unable to send "
5458 "command to target, sending BUSY "
5459 "status.\n", vha->vp_idx);
5462 &ha->hardware_lock, flags);
5463 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5465 spin_unlock_irqrestore(
5466 &ha->hardware_lock, flags);
5472 case IMMED_NOTIFY_TYPE:
5474 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5475 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5476 "qla_target(%d): Received ATIO packet %x "
5477 "with error status %x\n", vha->vp_idx,
5478 atio->u.raw.entry_type,
5479 atio->u.isp2x.entry_status);
5482 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5485 spin_lock_irqsave(&ha->hardware_lock, flags);
5486 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5488 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5493 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5494 "qla_target(%d): Received unknown ATIO atio "
5495 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5499 tgt->atio_irq_cmd_count--;
5502 /* ha->hardware_lock supposed to be held on entry */
5503 /* called via callback from qla2xxx */
5504 static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
5506 struct qla_hw_data *ha = vha->hw;
5507 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5509 if (unlikely(tgt == NULL)) {
5510 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5511 "qla_target(%d): Response pkt %x received, but no "
5512 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
5517 * In tgt_stop mode we also should allow all requests to pass.
5518 * Otherwise, some commands can stuck.
5521 tgt->irq_cmd_count++;
5523 switch (pkt->entry_type) {
5527 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5528 qlt_do_ctio_completion(vha, entry->handle,
5529 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5534 case ACCEPT_TGT_IO_TYPE:
5536 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5538 if (atio->u.isp2x.status !=
5539 cpu_to_le16(ATIO_CDB_VALID)) {
5540 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5541 "qla_target(%d): ATIO with error "
5542 "status %x received\n", vha->vp_idx,
5543 le16_to_cpu(atio->u.isp2x.status));
5547 rc = qlt_chk_qfull_thresh_hold(vha, atio);
5549 tgt->irq_cmd_count--;
5553 rc = qlt_handle_cmd_for_atio(vha, atio);
5554 if (unlikely(rc != 0)) {
5556 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5557 qlt_send_busy(vha, atio, 0);
5559 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
5562 if (tgt->tgt_stop) {
5563 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5564 "qla_target: Unable to send "
5565 "command to target, sending TERM "
5566 "EXCHANGE for rsp\n");
5567 qlt_send_term_exchange(vha, NULL,
5570 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5571 "qla_target(%d): Unable to send "
5572 "command to target, sending BUSY "
5573 "status\n", vha->vp_idx);
5574 qlt_send_busy(vha, atio, 0);
5581 case CONTINUE_TGT_IO_TYPE:
5583 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5584 qlt_do_ctio_completion(vha, entry->handle,
5585 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5592 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5593 qlt_do_ctio_completion(vha, entry->handle,
5594 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5599 case IMMED_NOTIFY_TYPE:
5600 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5601 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5604 case NOTIFY_ACK_TYPE:
5605 if (tgt->notify_ack_expected > 0) {
5606 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5607 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5608 "NOTIFY_ACK seq %08x status %x\n",
5609 le16_to_cpu(entry->u.isp2x.seq_id),
5610 le16_to_cpu(entry->u.isp2x.status));
5611 tgt->notify_ack_expected--;
5612 if (entry->u.isp2x.status !=
5613 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5614 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5615 "qla_target(%d): NOTIFY_ACK "
5616 "failed %x\n", vha->vp_idx,
5617 le16_to_cpu(entry->u.isp2x.status));
5620 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5621 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5626 case ABTS_RECV_24XX:
5627 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5628 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5629 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5632 case ABTS_RESP_24XX:
5633 if (tgt->abts_resp_expected > 0) {
5634 struct abts_resp_from_24xx_fw *entry =
5635 (struct abts_resp_from_24xx_fw *)pkt;
5636 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5637 "ABTS_RESP_24XX: compl_status %x\n",
5638 entry->compl_status);
5639 tgt->abts_resp_expected--;
5640 if (le16_to_cpu(entry->compl_status) !=
5641 ABTS_RESP_COMPL_SUCCESS) {
5642 if ((entry->error_subcode1 == 0x1E) &&
5643 (entry->error_subcode2 == 0)) {
5645 * We've got a race here: aborted
5646 * exchange not terminated, i.e.
5647 * response for the aborted command was
5648 * sent between the abort request was
5649 * received and processed.
5650 * Unfortunately, the firmware has a
5651 * silly requirement that all aborted
5652 * exchanges must be explicitely
5653 * terminated, otherwise it refuses to
5654 * send responses for the abort
5655 * requests. So, we have to
5656 * (re)terminate the exchange and retry
5657 * the abort response.
5659 qlt_24xx_retry_term_exchange(vha,
5662 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5663 "qla_target(%d): ABTS_RESP_24XX "
5664 "failed %x (subcode %x:%x)",
5665 vha->vp_idx, entry->compl_status,
5666 entry->error_subcode1,
5667 entry->error_subcode2);
5670 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5671 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5672 "received\n", vha->vp_idx);
5677 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5678 "qla_target(%d): Received unknown response pkt "
5679 "type %x\n", vha->vp_idx, pkt->entry_type);
5683 tgt->irq_cmd_count--;
5687 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5689 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5692 struct qla_hw_data *ha = vha->hw;
5693 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5696 if (!ha->tgt.tgt_ops)
5699 if (unlikely(tgt == NULL)) {
5700 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
5701 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
5705 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5709 * In tgt_stop mode we also should allow all requests to pass.
5710 * Otherwise, some commands can stuck.
5713 tgt->irq_cmd_count++;
5716 case MBA_RESET: /* Reset */
5717 case MBA_SYSTEM_ERR: /* System Error */
5718 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5719 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5720 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5721 "qla_target(%d): System error async event %#x "
5722 "occurred", vha->vp_idx, code);
5724 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5725 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5730 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
5731 "qla_target(%d): Async LOOP_UP occurred "
5732 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5733 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5734 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5735 if (tgt->link_reinit_iocb_pending) {
5736 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
5738 tgt->link_reinit_iocb_pending = 0;
5743 case MBA_LIP_OCCURRED:
5746 case MBA_RSCN_UPDATE:
5747 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
5748 "qla_target(%d): Async event %#x occurred "
5749 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5750 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5751 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5754 case MBA_PORT_UPDATE:
5755 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5756 "qla_target(%d): Port update async event %#x "
5757 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
5758 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5759 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5760 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5762 login_code = le16_to_cpu(mailbox[2]);
5763 if (login_code == 0x4)
5764 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5765 "Async MB 2: Got PLOGI Complete\n");
5766 else if (login_code == 0x7)
5767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5768 "Async MB 2: Port Logged Out\n");
5775 tgt->irq_cmd_count--;
5778 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5784 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
5786 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5787 "qla_target(%d): Allocation of tmp FC port failed",
5792 fcport->loop_id = loop_id;
5794 rc = qla2x00_get_port_database(vha, fcport, 0);
5795 if (rc != QLA_SUCCESS) {
5796 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5797 "qla_target(%d): Failed to retrieve fcport "
5798 "information -- get_port_database() returned %x "
5799 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5807 /* Must be called under tgt_mutex */
5808 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
5811 struct qla_tgt_sess *sess = NULL;
5812 fc_port_t *fcport = NULL;
5813 int rc, global_resets;
5814 uint16_t loop_id = 0;
5816 mutex_lock(&vha->vha_tgt.tgt_mutex);
5820 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
5822 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5824 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5826 if ((s_id[0] == 0xFF) &&
5827 (s_id[1] == 0xFC)) {
5829 * This is Domain Controller, so it should be
5830 * OK to drop SCSI commands from it.
5832 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5833 "Unable to find initiator with S_ID %x:%x:%x",
5834 s_id[0], s_id[1], s_id[2]);
5836 ql_log(ql_log_info, vha, 0xf071,
5837 "qla_target(%d): Unable to find "
5838 "initiator with S_ID %x:%x:%x",
5839 vha->vp_idx, s_id[0], s_id[1],
5842 if (rc == -ENOENT) {
5843 qlt_port_logo_t logo;
5844 sid_to_portid(s_id, &logo.id);
5846 qlt_send_first_logo(vha, &logo);
5852 fcport = qlt_get_port_database(vha, loop_id);
5854 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5858 if (global_resets !=
5859 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
5860 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5861 "qla_target(%d): global reset during session discovery "
5862 "(counter was %d, new %d), retrying", vha->vp_idx,
5864 atomic_read(&vha->vha_tgt.
5865 qla_tgt->tgt_global_resets_count));
5869 sess = qlt_create_sess(vha, fcport, true);
5871 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5877 static void qlt_abort_work(struct qla_tgt *tgt,
5878 struct qla_tgt_sess_work_param *prm)
5880 struct scsi_qla_host *vha = tgt->vha;
5881 struct qla_hw_data *ha = vha->hw;
5882 struct qla_tgt_sess *sess = NULL;
5883 unsigned long flags = 0, flags2 = 0;
5888 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5893 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5894 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5895 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5897 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5898 (unsigned char *)&be_s_id);
5900 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5902 sess = qlt_make_local_sess(vha, s_id);
5903 /* sess has got an extra creation ref */
5905 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5909 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
5914 kref_get(&sess->se_sess->sess_kref);
5917 spin_lock_irqsave(&ha->hardware_lock, flags);
5922 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
5925 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5927 ha->tgt.tgt_ops->put_sess(sess);
5928 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5932 spin_lock_irqsave(&ha->hardware_lock, flags);
5935 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
5936 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5939 ha->tgt.tgt_ops->put_sess(sess);
5940 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5943 static void qlt_tmr_work(struct qla_tgt *tgt,
5944 struct qla_tgt_sess_work_param *prm)
5946 struct atio_from_isp *a = &prm->tm_iocb2;
5947 struct scsi_qla_host *vha = tgt->vha;
5948 struct qla_hw_data *ha = vha->hw;
5949 struct qla_tgt_sess *sess = NULL;
5950 unsigned long flags;
5951 uint8_t *s_id = NULL; /* to hide compiler warnings */
5953 uint32_t lun, unpacked_lun;
5957 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5962 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5963 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5965 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5967 sess = qlt_make_local_sess(vha, s_id);
5968 /* sess has got an extra creation ref */
5970 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5974 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
5979 kref_get(&sess->se_sess->sess_kref);
5983 lun = a->u.isp24.fcp_cmnd.lun;
5984 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
5985 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
5987 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5991 ha->tgt.tgt_ops->put_sess(sess);
5992 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5996 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0);
5998 ha->tgt.tgt_ops->put_sess(sess);
5999 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6002 static void qlt_sess_work_fn(struct work_struct *work)
6004 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6005 struct scsi_qla_host *vha = tgt->vha;
6006 unsigned long flags;
6008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6010 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6011 while (!list_empty(&tgt->sess_works_list)) {
6012 struct qla_tgt_sess_work_param *prm = list_entry(
6013 tgt->sess_works_list.next, typeof(*prm),
6014 sess_works_list_entry);
6017 * This work can be scheduled on several CPUs at time, so we
6018 * must delete the entry to eliminate double processing
6020 list_del(&prm->sess_works_list_entry);
6022 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6024 switch (prm->type) {
6025 case QLA_TGT_SESS_WORK_ABORT:
6026 qlt_abort_work(tgt, prm);
6028 case QLA_TGT_SESS_WORK_TM:
6029 qlt_tmr_work(tgt, prm);
6036 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6040 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6043 /* Must be called under tgt_host_action_mutex */
6044 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6046 struct qla_tgt *tgt;
6048 if (!QLA_TGT_MODE_ENABLED())
6051 if (!IS_TGT_MODE_CAPABLE(ha)) {
6052 ql_log(ql_log_warn, base_vha, 0xe070,
6053 "This adapter does not support target mode.\n");
6057 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
6058 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
6060 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
6062 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6064 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6065 "Unable to allocate struct qla_tgt\n");
6069 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6070 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6073 tgt->vha = base_vha;
6074 init_waitqueue_head(&tgt->waitQ);
6075 INIT_LIST_HEAD(&tgt->sess_list);
6076 INIT_LIST_HEAD(&tgt->del_sess_list);
6077 INIT_DELAYED_WORK(&tgt->sess_del_work,
6078 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
6079 spin_lock_init(&tgt->sess_work_lock);
6080 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6081 INIT_LIST_HEAD(&tgt->sess_works_list);
6082 spin_lock_init(&tgt->srr_lock);
6083 INIT_LIST_HEAD(&tgt->srr_ctio_list);
6084 INIT_LIST_HEAD(&tgt->srr_imm_list);
6085 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
6086 atomic_set(&tgt->tgt_global_resets_count, 0);
6088 base_vha->vha_tgt.qla_tgt = tgt;
6090 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6091 "qla_target(%d): using 64 Bit PCI addressing",
6093 tgt->tgt_enable_64bit_addr = 1;
6095 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6096 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
6097 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
6099 if (base_vha->fc_vport)
6102 mutex_lock(&qla_tgt_mutex);
6103 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6104 mutex_unlock(&qla_tgt_mutex);
6109 /* Must be called under tgt_host_action_mutex */
6110 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6112 if (!vha->vha_tgt.qla_tgt)
6115 if (vha->fc_vport) {
6116 qlt_release(vha->vha_tgt.qla_tgt);
6120 /* free left over qfull cmds */
6121 qlt_init_term_exchange(vha);
6123 mutex_lock(&qla_tgt_mutex);
6124 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
6125 mutex_unlock(&qla_tgt_mutex);
6127 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6129 qlt_release(vha->vha_tgt.qla_tgt);
6134 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6139 pr_debug("qla2xxx HW vha->node_name: ");
6140 for (i = 0; i < WWN_SIZE; i++)
6141 pr_debug("%02x ", vha->node_name[i]);
6143 pr_debug("qla2xxx HW vha->port_name: ");
6144 for (i = 0; i < WWN_SIZE; i++)
6145 pr_debug("%02x ", vha->port_name[i]);
6148 pr_debug("qla2xxx passed configfs WWPN: ");
6149 put_unaligned_be64(wwpn, b);
6150 for (i = 0; i < WWN_SIZE; i++)
6151 pr_debug("%02x ", b[i]);
6156 * qla_tgt_lport_register - register lport with external module
6158 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6159 * @wwpn: Passwd FC target WWPN
6160 * @callback: lport initialization callback for tcm_qla2xxx code
6161 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6163 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6164 u64 npiv_wwpn, u64 npiv_wwnn,
6165 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6167 struct qla_tgt *tgt;
6168 struct scsi_qla_host *vha;
6169 struct qla_hw_data *ha;
6170 struct Scsi_Host *host;
6171 unsigned long flags;
6175 mutex_lock(&qla_tgt_mutex);
6176 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6184 if (!(host->hostt->supported_mode & MODE_TARGET))
6187 spin_lock_irqsave(&ha->hardware_lock, flags);
6188 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6189 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6191 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6194 if (tgt->tgt_stop) {
6195 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6197 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6200 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6202 if (!scsi_host_get(host)) {
6203 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6204 "Unable to scsi_host_get() for"
6205 " qla2xxx scsi_host\n");
6208 qlt_lport_dump(vha, phys_wwpn, b);
6210 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6211 scsi_host_put(host);
6214 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6216 scsi_host_put(host);
6218 mutex_unlock(&qla_tgt_mutex);
6221 mutex_unlock(&qla_tgt_mutex);
6225 EXPORT_SYMBOL(qlt_lport_register);
6228 * qla_tgt_lport_deregister - Degister lport
6230 * @vha: Registered scsi_qla_host pointer
6232 void qlt_lport_deregister(struct scsi_qla_host *vha)
6234 struct qla_hw_data *ha = vha->hw;
6235 struct Scsi_Host *sh = vha->host;
6237 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6239 vha->vha_tgt.target_lport_ptr = NULL;
6240 ha->tgt.tgt_ops = NULL;
6242 * Release the Scsi_Host reference for the underlying qla2xxx host
6246 EXPORT_SYMBOL(qlt_lport_deregister);
6248 /* Must be called under HW lock */
6249 static void qlt_set_mode(struct scsi_qla_host *vha)
6251 struct qla_hw_data *ha = vha->hw;
6253 switch (ql2x_ini_mode) {
6254 case QLA2XXX_INI_MODE_DISABLED:
6255 case QLA2XXX_INI_MODE_EXCLUSIVE:
6256 vha->host->active_mode = MODE_TARGET;
6258 case QLA2XXX_INI_MODE_ENABLED:
6259 vha->host->active_mode |= MODE_TARGET;
6265 if (ha->tgt.ini_mode_force_reverse)
6266 qla_reverse_ini_mode(vha);
6269 /* Must be called under HW lock */
6270 static void qlt_clear_mode(struct scsi_qla_host *vha)
6272 struct qla_hw_data *ha = vha->hw;
6274 switch (ql2x_ini_mode) {
6275 case QLA2XXX_INI_MODE_DISABLED:
6276 vha->host->active_mode = MODE_UNKNOWN;
6278 case QLA2XXX_INI_MODE_EXCLUSIVE:
6279 vha->host->active_mode = MODE_INITIATOR;
6281 case QLA2XXX_INI_MODE_ENABLED:
6282 vha->host->active_mode &= ~MODE_TARGET;
6288 if (ha->tgt.ini_mode_force_reverse)
6289 qla_reverse_ini_mode(vha);
6293 * qla_tgt_enable_vha - NO LOCK HELD
6295 * host_reset, bring up w/ Target Mode Enabled
6298 qlt_enable_vha(struct scsi_qla_host *vha)
6300 struct qla_hw_data *ha = vha->hw;
6301 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6302 unsigned long flags;
6303 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6304 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER;
6307 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6308 "Unable to locate qla_tgt pointer from"
6309 " struct qla_hw_data\n");
6314 spin_lock_irqsave(&ha->hardware_lock, flags);
6315 tgt->tgt_stopped = 0;
6317 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6320 qla24xx_disable_vp(vha);
6321 qla24xx_enable_vp(vha);
6323 if (ha->msix_entries) {
6324 ql_dbg(ql_dbg_tgt, vha, 0xffff,
6325 "%s: host%ld : vector %d cpu %d\n",
6326 __func__, vha->host_no,
6327 ha->msix_entries[rspq_ent].vector,
6328 ha->msix_entries[rspq_ent].cpuid);
6330 ha->tgt.rspq_vector_cpuid =
6331 ha->msix_entries[rspq_ent].cpuid;
6334 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6335 qla2xxx_wake_dpc(base_vha);
6336 qla2x00_wait_for_hba_online(base_vha);
6339 EXPORT_SYMBOL(qlt_enable_vha);
6342 * qla_tgt_disable_vha - NO LOCK HELD
6344 * Disable Target Mode and reset the adapter
6346 static void qlt_disable_vha(struct scsi_qla_host *vha)
6348 struct qla_hw_data *ha = vha->hw;
6349 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6350 unsigned long flags;
6353 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6354 "Unable to locate qla_tgt pointer from"
6355 " struct qla_hw_data\n");
6360 spin_lock_irqsave(&ha->hardware_lock, flags);
6361 qlt_clear_mode(vha);
6362 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6364 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6365 qla2xxx_wake_dpc(vha);
6366 qla2x00_wait_for_hba_online(vha);
6370 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6371 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6375 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6377 if (!qla_tgt_mode_enabled(vha))
6380 vha->vha_tgt.qla_tgt = NULL;
6382 mutex_init(&vha->vha_tgt.tgt_mutex);
6383 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6385 qlt_clear_mode(vha);
6388 * NOTE: Currently the value is kept the same for <24xx and
6389 * >=24xx ISPs. If it is necessary to change it,
6390 * the check should be added for specific ISPs,
6391 * assigning the value appropriately.
6393 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6395 qlt_add_target(ha, vha);
6399 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6402 * FC-4 Feature bit 0 indicates target functionality to the name server.
6404 if (qla_tgt_mode_enabled(vha)) {
6405 if (qla_ini_mode_enabled(vha))
6406 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
6408 ct_req->req.rff_id.fc4_feature = BIT_0;
6409 } else if (qla_ini_mode_enabled(vha)) {
6410 ct_req->req.rff_id.fc4_feature = BIT_1;
6415 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6418 * Beginning of ATIO ring has initialization control block already built
6419 * by nvram config routine.
6421 * Returns 0 on success.
6424 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6426 struct qla_hw_data *ha = vha->hw;
6428 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6430 if (!qla_tgt_mode_enabled(vha))
6433 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6434 pkt->u.raw.signature = ATIO_PROCESSED;
6441 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6442 * @ha: SCSI driver HA context
6445 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6447 struct qla_hw_data *ha = vha->hw;
6448 struct atio_from_isp *pkt;
6451 if (!vha->flags.online)
6454 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
6455 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6456 cnt = pkt->u.raw.entry_count;
6458 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt,
6461 for (i = 0; i < cnt; i++) {
6462 ha->tgt.atio_ring_index++;
6463 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6464 ha->tgt.atio_ring_index = 0;
6465 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6467 ha->tgt.atio_ring_ptr++;
6469 pkt->u.raw.signature = ATIO_PROCESSED;
6470 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6475 /* Adjust ring index */
6476 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6477 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
6481 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6483 struct qla_hw_data *ha = vha->hw;
6484 if (!QLA_TGT_MODE_ENABLED())
6487 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6488 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6489 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6491 if (IS_ATIO_MSIX_CAPABLE(ha)) {
6492 struct qla_msix_entry *msix = &ha->msix_entries[2];
6493 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6495 icb->msix_atio = cpu_to_le16(msix->entry);
6496 ql_dbg(ql_dbg_init, vha, 0xf072,
6497 "Registering ICB vector 0x%x for atio que.\n",
6503 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6505 struct qla_hw_data *ha = vha->hw;
6507 if (qla_tgt_mode_enabled(vha)) {
6508 if (!ha->tgt.saved_set) {
6509 /* We save only once */
6510 ha->tgt.saved_exchange_count = nv->exchange_count;
6511 ha->tgt.saved_firmware_options_1 =
6512 nv->firmware_options_1;
6513 ha->tgt.saved_firmware_options_2 =
6514 nv->firmware_options_2;
6515 ha->tgt.saved_firmware_options_3 =
6516 nv->firmware_options_3;
6517 ha->tgt.saved_set = 1;
6520 nv->exchange_count = cpu_to_le16(0xFFFF);
6522 /* Enable target mode */
6523 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6525 /* Disable ini mode, if requested */
6526 if (!qla_ini_mode_enabled(vha))
6527 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6529 /* Disable Full Login after LIP */
6530 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6531 /* Enable initial LIP */
6532 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6533 if (ql2xtgt_tape_enable)
6534 /* Enable FC Tape support */
6535 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6537 /* Disable FC Tape support */
6538 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6540 /* Disable Full Login after LIP */
6541 nv->host_p &= cpu_to_le32(~BIT_10);
6542 /* Enable target PRLI control */
6543 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6545 if (ha->tgt.saved_set) {
6546 nv->exchange_count = ha->tgt.saved_exchange_count;
6547 nv->firmware_options_1 =
6548 ha->tgt.saved_firmware_options_1;
6549 nv->firmware_options_2 =
6550 ha->tgt.saved_firmware_options_2;
6551 nv->firmware_options_3 =
6552 ha->tgt.saved_firmware_options_3;
6557 /* out-of-order frames reassembly */
6558 nv->firmware_options_3 |= BIT_6|BIT_9;
6560 if (ha->tgt.enable_class_2) {
6561 if (vha->flags.init_done)
6562 fc_host_supported_classes(vha->host) =
6563 FC_COS_CLASS2 | FC_COS_CLASS3;
6565 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6567 if (vha->flags.init_done)
6568 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6570 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6575 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6576 struct init_cb_24xx *icb)
6578 struct qla_hw_data *ha = vha->hw;
6580 if (!QLA_TGT_MODE_ENABLED())
6583 if (ha->tgt.node_name_set) {
6584 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6585 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6588 /* disable ZIO at start time. */
6589 if (!vha->flags.init_done) {
6591 tmp = le32_to_cpu(icb->firmware_options_2);
6592 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6593 icb->firmware_options_2 = cpu_to_le32(tmp);
6598 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6600 struct qla_hw_data *ha = vha->hw;
6602 if (!QLA_TGT_MODE_ENABLED())
6605 if (qla_tgt_mode_enabled(vha)) {
6606 if (!ha->tgt.saved_set) {
6607 /* We save only once */
6608 ha->tgt.saved_exchange_count = nv->exchange_count;
6609 ha->tgt.saved_firmware_options_1 =
6610 nv->firmware_options_1;
6611 ha->tgt.saved_firmware_options_2 =
6612 nv->firmware_options_2;
6613 ha->tgt.saved_firmware_options_3 =
6614 nv->firmware_options_3;
6615 ha->tgt.saved_set = 1;
6618 nv->exchange_count = cpu_to_le16(0xFFFF);
6620 /* Enable target mode */
6621 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6623 /* Disable ini mode, if requested */
6624 if (!qla_ini_mode_enabled(vha))
6625 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6627 /* Disable Full Login after LIP */
6628 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6629 /* Enable initial LIP */
6630 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6631 if (ql2xtgt_tape_enable)
6632 /* Enable FC tape support */
6633 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6635 /* Disable FC tape support */
6636 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6638 /* Disable Full Login after LIP */
6639 nv->host_p &= cpu_to_le32(~BIT_10);
6640 /* Enable target PRLI control */
6641 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6643 if (ha->tgt.saved_set) {
6644 nv->exchange_count = ha->tgt.saved_exchange_count;
6645 nv->firmware_options_1 =
6646 ha->tgt.saved_firmware_options_1;
6647 nv->firmware_options_2 =
6648 ha->tgt.saved_firmware_options_2;
6649 nv->firmware_options_3 =
6650 ha->tgt.saved_firmware_options_3;
6655 /* out-of-order frames reassembly */
6656 nv->firmware_options_3 |= BIT_6|BIT_9;
6658 if (ha->tgt.enable_class_2) {
6659 if (vha->flags.init_done)
6660 fc_host_supported_classes(vha->host) =
6661 FC_COS_CLASS2 | FC_COS_CLASS3;
6663 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6665 if (vha->flags.init_done)
6666 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6668 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6673 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6674 struct init_cb_81xx *icb)
6676 struct qla_hw_data *ha = vha->hw;
6678 if (!QLA_TGT_MODE_ENABLED())
6681 if (ha->tgt.node_name_set) {
6682 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6683 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6686 /* disable ZIO at start time. */
6687 if (!vha->flags.init_done) {
6689 tmp = le32_to_cpu(icb->firmware_options_2);
6690 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6691 icb->firmware_options_2 = cpu_to_le32(tmp);
6697 qlt_83xx_iospace_config(struct qla_hw_data *ha)
6699 if (!QLA_TGT_MODE_ENABLED())
6702 ha->msix_count += 1; /* For ATIO Q */
6706 qlt_24xx_process_response_error(struct scsi_qla_host *vha,
6707 struct sts_entry_24xx *pkt)
6709 switch (pkt->entry_type) {
6710 case ABTS_RECV_24XX:
6711 case ABTS_RESP_24XX:
6713 case NOTIFY_ACK_TYPE:
6722 qlt_modify_vp_config(struct scsi_qla_host *vha,
6723 struct vp_config_entry_24xx *vpmod)
6725 if (qla_tgt_mode_enabled(vha))
6726 vpmod->options_idx1 &= ~BIT_5;
6727 /* Disable ini mode, if requested */
6728 if (!qla_ini_mode_enabled(vha))
6729 vpmod->options_idx1 &= ~BIT_4;
6733 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6735 if (!QLA_TGT_MODE_ENABLED())
6738 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6739 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6740 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6742 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6743 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6746 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6747 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
6748 qlt_clear_mode(base_vha);
6752 qla83xx_msix_atio_q(int irq, void *dev_id)
6754 struct rsp_que *rsp;
6755 scsi_qla_host_t *vha;
6756 struct qla_hw_data *ha;
6757 unsigned long flags;
6759 rsp = (struct rsp_que *) dev_id;
6761 vha = pci_get_drvdata(ha->pdev);
6763 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6765 qlt_24xx_process_atio_queue(vha, 0);
6767 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6773 qlt_handle_abts_recv_work(struct work_struct *work)
6775 struct qla_tgt_sess_op *op = container_of(work,
6776 struct qla_tgt_sess_op, work);
6777 scsi_qla_host_t *vha = op->vha;
6778 struct qla_hw_data *ha = vha->hw;
6779 unsigned long flags;
6781 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset))
6784 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6785 qlt_24xx_process_atio_queue(vha, 0);
6786 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6788 spin_lock_irqsave(&ha->hardware_lock, flags);
6789 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio);
6790 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6794 qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
6796 struct qla_tgt_sess_op *op;
6798 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6801 /* do not reach for ATIO queue here. This is best effort err
6802 * recovery at this point.
6804 qlt_response_pkt_all_vps(vha, pkt);
6808 memcpy(&op->atio, pkt, sizeof(*pkt));
6810 op->chip_reset = vha->hw->chip_reset;
6811 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6812 queue_work(qla_tgt_wq, &op->work);
6817 qlt_mem_alloc(struct qla_hw_data *ha)
6819 if (!QLA_TGT_MODE_ENABLED())
6822 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6823 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6824 if (!ha->tgt.tgt_vp_map)
6827 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6828 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6829 &ha->tgt.atio_dma, GFP_KERNEL);
6830 if (!ha->tgt.atio_ring) {
6831 kfree(ha->tgt.tgt_vp_map);
6838 qlt_mem_free(struct qla_hw_data *ha)
6840 if (!QLA_TGT_MODE_ENABLED())
6843 if (ha->tgt.atio_ring) {
6844 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6845 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6848 kfree(ha->tgt.tgt_vp_map);
6851 /* vport_slock to be held by the caller */
6853 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6855 if (!QLA_TGT_MODE_ENABLED())
6860 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6863 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
6866 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
6869 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
6874 static int __init qlt_parse_ini_mode(void)
6876 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
6877 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
6878 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
6879 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
6880 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
6881 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
6888 int __init qlt_init(void)
6892 if (!qlt_parse_ini_mode()) {
6893 ql_log(ql_log_fatal, NULL, 0xe06b,
6894 "qlt_parse_ini_mode() failed\n");
6898 if (!QLA_TGT_MODE_ENABLED())
6901 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
6902 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
6903 qla_tgt_mgmt_cmd), 0, NULL);
6904 if (!qla_tgt_mgmt_cmd_cachep) {
6905 ql_log(ql_log_fatal, NULL, 0xe06d,
6906 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
6910 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
6911 sizeof(qlt_plogi_ack_t),
6912 __alignof__(qlt_plogi_ack_t),
6915 if (!qla_tgt_plogi_cachep) {
6916 ql_log(ql_log_fatal, NULL, 0xe06d,
6917 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
6919 goto out_mgmt_cmd_cachep;
6922 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
6923 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
6924 if (!qla_tgt_mgmt_cmd_mempool) {
6925 ql_log(ql_log_fatal, NULL, 0xe06e,
6926 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
6928 goto out_plogi_cachep;
6931 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
6933 ql_log(ql_log_fatal, NULL, 0xe06f,
6934 "alloc_workqueue for qla_tgt_wq failed\n");
6936 goto out_cmd_mempool;
6939 * Return 1 to signal that initiator-mode is being disabled
6941 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
6944 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
6946 kmem_cache_destroy(qla_tgt_plogi_cachep);
6947 out_mgmt_cmd_cachep:
6948 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
6954 if (!QLA_TGT_MODE_ENABLED())
6957 destroy_workqueue(qla_tgt_wq);
6958 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
6959 kmem_cache_destroy(qla_tgt_plogi_cachep);
6960 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);