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) 2010-2011 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/version.h>
30 #include <linux/blkdev.h>
31 #include <linux/interrupt.h>
32 #include <linux/pci.h>
33 #include <linux/delay.h>
34 #include <linux/list.h>
35 #include <linux/workqueue.h>
36 #include <asm/unaligned.h>
37 #include <scsi/scsi.h>
38 #include <scsi/scsi_host.h>
39 #include <scsi/scsi_tcq.h>
40 #include <target/target_core_base.h>
41 #include <target/target_core_fabric.h>
44 #include "qla_target.h"
46 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
47 module_param(qlini_mode, charp, S_IRUGO);
48 MODULE_PARM_DESC(qlini_mode,
49 "Determines when initiator mode will be enabled. Possible values: "
50 "\"exclusive\" - initiator mode will be enabled on load, "
51 "disabled on enabling target mode and then on disabling target mode "
53 "\"disabled\" - initiator mode will never be enabled; "
54 "\"enabled\" (default) - initiator mode will always stay enabled.");
56 static int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
59 * From scsi/fc/fc_fcp.h
61 enum fcp_resp_rsp_codes {
63 FCP_DATA_LEN_INVALID = 1,
64 FCP_CMND_FIELDS_INVALID = 2,
65 FCP_DATA_PARAM_MISMATCH = 3,
68 FCP_TMF_INVALID_LUN = 9,
72 * fc_pri_ta from scsi/fc/fc_fcp.h
74 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
75 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
76 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
77 #define FCP_PTA_ACA 4 /* auto. contigent allegiance */
78 #define FCP_PTA_MASK 7 /* mask for task attribute field */
79 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
80 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
83 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
84 * must be called under HW lock and could unlock/lock it inside.
85 * It isn't an issue, since in the current implementation on the time when
86 * those functions are called:
88 * - Either context is IRQ and only IRQ handler can modify HW data,
89 * including rings related fields,
91 * - Or access to target mode variables from struct qla_tgt doesn't
92 * cross those functions boundaries, except tgt_stop, which
93 * additionally protected by irq_cmd_count.
95 /* Predefs for callbacks handed to qla2xxx LLD */
96 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
97 struct atio_from_isp *pkt);
98 static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
99 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
100 int fn, void *iocb, int flags);
101 static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
102 *cmd, struct atio_from_isp *atio, int ha_locked);
103 static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
104 struct qla_tgt_srr_imm *imm, int ha_lock);
108 static struct kmem_cache *qla_tgt_cmd_cachep;
109 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
110 static mempool_t *qla_tgt_mgmt_cmd_mempool;
111 static struct workqueue_struct *qla_tgt_wq;
112 static DEFINE_MUTEX(qla_tgt_mutex);
113 static LIST_HEAD(qla_tgt_glist);
115 /* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
116 static struct qla_tgt_sess *qlt_find_sess_by_port_name(
118 const uint8_t *port_name)
120 struct qla_tgt_sess *sess;
122 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
123 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
130 /* Might release hw lock, then reaquire!! */
131 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
133 /* Send marker if required */
134 if (unlikely(vha->marker_needed != 0)) {
135 int rc = qla2x00_issue_marker(vha, vha_locked);
136 if (rc != QLA_SUCCESS) {
137 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
138 "qla_target(%d): issue_marker() failed\n",
147 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
150 struct qla_hw_data *ha = vha->hw;
153 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
156 if (vha->d_id.b.al_pa == d_id[2])
159 BUG_ON(ha->tgt.tgt_vp_map == NULL);
160 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
161 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
162 return ha->tgt.tgt_vp_map[vp_idx].vha;
168 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
171 struct qla_hw_data *ha = vha->hw;
173 if (vha->vp_idx == vp_idx)
176 BUG_ON(ha->tgt.tgt_vp_map == NULL);
177 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
178 return ha->tgt.tgt_vp_map[vp_idx].vha;
183 void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
184 struct atio_from_isp *atio)
186 switch (atio->u.raw.entry_type) {
189 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
190 atio->u.isp24.fcp_hdr.d_id);
191 if (unlikely(NULL == host)) {
192 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
193 "qla_target(%d): Received ATIO_TYPE7 "
194 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
195 atio->u.isp24.fcp_hdr.d_id[0],
196 atio->u.isp24.fcp_hdr.d_id[1],
197 atio->u.isp24.fcp_hdr.d_id[2]);
200 qlt_24xx_atio_pkt(host, atio);
204 case IMMED_NOTIFY_TYPE:
206 struct scsi_qla_host *host = vha;
207 struct imm_ntfy_from_isp *entry =
208 (struct imm_ntfy_from_isp *)atio;
210 if ((entry->u.isp24.vp_index != 0xFF) &&
211 (entry->u.isp24.nport_handle != 0xFFFF)) {
212 host = qlt_find_host_by_vp_idx(vha,
213 entry->u.isp24.vp_index);
214 if (unlikely(!host)) {
215 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
216 "qla_target(%d): Received "
217 "ATIO (IMMED_NOTIFY_TYPE) "
218 "with unknown vp_index %d\n",
219 vha->vp_idx, entry->u.isp24.vp_index);
223 qlt_24xx_atio_pkt(host, atio);
228 ql_dbg(ql_dbg_tgt, vha, 0xe040,
229 "qla_target(%d): Received unknown ATIO atio "
230 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
237 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
239 switch (pkt->entry_type) {
242 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
243 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
245 if (unlikely(!host)) {
246 ql_dbg(ql_dbg_tgt, vha, 0xe041,
247 "qla_target(%d): Response pkt (CTIO_TYPE7) "
248 "received, with unknown vp_index %d\n",
249 vha->vp_idx, entry->vp_index);
252 qlt_response_pkt(host, pkt);
256 case IMMED_NOTIFY_TYPE:
258 struct scsi_qla_host *host = vha;
259 struct imm_ntfy_from_isp *entry =
260 (struct imm_ntfy_from_isp *)pkt;
262 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
263 if (unlikely(!host)) {
264 ql_dbg(ql_dbg_tgt, vha, 0xe042,
265 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
266 "received, with unknown vp_index %d\n",
267 vha->vp_idx, entry->u.isp24.vp_index);
270 qlt_response_pkt(host, pkt);
274 case NOTIFY_ACK_TYPE:
276 struct scsi_qla_host *host = vha;
277 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
279 if (0xFF != entry->u.isp24.vp_index) {
280 host = qlt_find_host_by_vp_idx(vha,
281 entry->u.isp24.vp_index);
282 if (unlikely(!host)) {
283 ql_dbg(ql_dbg_tgt, vha, 0xe043,
284 "qla_target(%d): Response "
285 "pkt (NOTIFY_ACK_TYPE) "
286 "received, with unknown "
287 "vp_index %d\n", vha->vp_idx,
288 entry->u.isp24.vp_index);
292 qlt_response_pkt(host, pkt);
298 struct abts_recv_from_24xx *entry =
299 (struct abts_recv_from_24xx *)pkt;
300 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
302 if (unlikely(!host)) {
303 ql_dbg(ql_dbg_tgt, vha, 0xe044,
304 "qla_target(%d): Response pkt "
305 "(ABTS_RECV_24XX) received, with unknown "
306 "vp_index %d\n", vha->vp_idx, entry->vp_index);
309 qlt_response_pkt(host, pkt);
315 struct abts_resp_to_24xx *entry =
316 (struct abts_resp_to_24xx *)pkt;
317 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
319 if (unlikely(!host)) {
320 ql_dbg(ql_dbg_tgt, vha, 0xe045,
321 "qla_target(%d): Response pkt "
322 "(ABTS_RECV_24XX) received, with unknown "
323 "vp_index %d\n", vha->vp_idx, entry->vp_index);
326 qlt_response_pkt(host, pkt);
331 qlt_response_pkt(vha, pkt);
337 static void qlt_free_session_done(struct work_struct *work)
339 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
341 struct qla_tgt *tgt = sess->tgt;
342 struct scsi_qla_host *vha = sess->vha;
343 struct qla_hw_data *ha = vha->hw;
347 * Release the target session for FC Nexus from fabric module code.
349 if (sess->se_sess != NULL)
350 ha->tgt.tgt_ops->free_session(sess);
352 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
353 "Unregistration of sess %p finished\n", sess);
357 * We need to protect against race, when tgt is freed before or
361 if (tgt->sess_count == 0)
362 wake_up_all(&tgt->waitQ);
365 /* ha->hardware_lock supposed to be held on entry */
366 void qlt_unreg_sess(struct qla_tgt_sess *sess)
368 struct scsi_qla_host *vha = sess->vha;
370 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
372 list_del(&sess->sess_list_entry);
374 list_del(&sess->del_list_entry);
376 INIT_WORK(&sess->free_work, qlt_free_session_done);
377 schedule_work(&sess->free_work);
379 EXPORT_SYMBOL(qlt_unreg_sess);
381 /* ha->hardware_lock supposed to be held on entry */
382 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
384 struct qla_hw_data *ha = vha->hw;
385 struct qla_tgt_sess *sess = NULL;
386 uint32_t unpacked_lun, lun = 0;
389 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
390 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
392 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
393 if (loop_id == 0xFFFF) {
394 #if 0 /* FIXME: Re-enable Global event handling.. */
396 atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
397 qlt_clear_tgt_db(ha->tgt.qla_tgt, 1);
398 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
399 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
400 typeof(*sess), sess_list_entry);
402 case QLA_TGT_NEXUS_LOSS_SESS:
403 mcmd = QLA_TGT_NEXUS_LOSS;
405 case QLA_TGT_ABORT_ALL_SESS:
406 mcmd = QLA_TGT_ABORT_ALL;
408 case QLA_TGT_NEXUS_LOSS:
409 case QLA_TGT_ABORT_ALL:
412 ql_dbg(ql_dbg_tgt, vha, 0xe046,
413 "qla_target(%d): Not allowed "
414 "command %x in %s", vha->vp_idx,
423 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
426 ql_dbg(ql_dbg_tgt, vha, 0xe000,
427 "Using sess for qla_tgt_reset: %p\n", sess);
433 ql_dbg(ql_dbg_tgt, vha, 0xe047,
434 "scsi(%ld): resetting (session %p from port "
435 "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x, "
436 "mcmd %x, loop_id %d)\n", vha->host_no, sess,
437 sess->port_name[0], sess->port_name[1],
438 sess->port_name[2], sess->port_name[3],
439 sess->port_name[4], sess->port_name[5],
440 sess->port_name[6], sess->port_name[7],
443 lun = a->u.isp24.fcp_cmnd.lun;
444 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
446 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
447 iocb, QLA24XX_MGMT_SEND_NACK);
450 /* ha->hardware_lock supposed to be held on entry */
451 static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
454 struct qla_tgt *tgt = sess->tgt;
455 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
460 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
461 "Scheduling sess %p for deletion\n", sess);
462 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
468 sess->expires = jiffies + dev_loss_tmo * HZ;
470 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
471 "qla_target(%d): session for port %02x:%02x:%02x:"
472 "%02x:%02x:%02x:%02x:%02x (loop ID %d) scheduled for "
473 "deletion in %u secs (expires: %lu) immed: %d\n",
475 sess->port_name[0], sess->port_name[1],
476 sess->port_name[2], sess->port_name[3],
477 sess->port_name[4], sess->port_name[5],
478 sess->port_name[6], sess->port_name[7],
479 sess->loop_id, dev_loss_tmo, sess->expires, immediate);
482 schedule_delayed_work(&tgt->sess_del_work, 0);
484 schedule_delayed_work(&tgt->sess_del_work,
485 jiffies - sess->expires);
488 /* ha->hardware_lock supposed to be held on entry */
489 static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
491 struct qla_tgt_sess *sess;
493 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
494 qlt_schedule_sess_for_deletion(sess, true);
496 /* At this point tgt could be already dead */
499 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
502 struct qla_hw_data *ha = vha->hw;
503 dma_addr_t gid_list_dma;
504 struct gid_list_info *gid_list;
509 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
510 &gid_list_dma, GFP_KERNEL);
512 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
513 "qla_target(%d): DMA Alloc failed of %u\n",
514 vha->vp_idx, qla2x00_gid_list_size(ha));
518 /* Get list of logged in devices */
519 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
520 if (rc != QLA_SUCCESS) {
521 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
522 "qla_target(%d): get_id_list() failed: %x\n",
525 goto out_free_id_list;
528 id_iter = (char *)gid_list;
530 for (i = 0; i < entries; i++) {
531 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
532 if ((gid->al_pa == s_id[2]) &&
533 (gid->area == s_id[1]) &&
534 (gid->domain == s_id[0])) {
535 *loop_id = le16_to_cpu(gid->loop_id);
539 id_iter += ha->gid_list_info_size;
543 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
544 gid_list, gid_list_dma);
548 static bool qlt_check_fcport_exist(struct scsi_qla_host *vha,
549 struct qla_tgt_sess *sess)
551 struct qla_hw_data *ha = vha->hw;
552 struct qla_port_24xx_data *pmap24;
553 bool res, found = false;
555 uint16_t loop_id = 0xFFFF; /* to eliminate compiler's warning */
563 global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count);
565 rc = qla2x00_get_node_name_list(vha, &pmap, &pmap_len);
566 if (rc != QLA_SUCCESS) {
572 entries = pmap_len/sizeof(*pmap24);
574 for (i = 0; i < entries; ++i) {
575 if (!memcmp(sess->port_name, pmap24[i].port_name, WWN_SIZE)) {
576 loop_id = le16_to_cpu(pmap24[i].loop_id);
589 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf046,
590 "qlt_check_fcport_exist(): loop_id %d", loop_id);
592 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
593 if (fcport == NULL) {
594 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf047,
595 "qla_target(%d): Allocation of tmp FC port failed",
601 fcport->loop_id = loop_id;
603 rc = qla2x00_get_port_database(vha, fcport, 0);
604 if (rc != QLA_SUCCESS) {
605 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf048,
606 "qla_target(%d): Failed to retrieve fcport "
607 "information -- get_port_database() returned %x "
608 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
610 goto out_free_fcport;
614 atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) {
615 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
616 "qla_target(%d): global reset during session discovery"
617 " (counter was %d, new %d), retrying",
618 vha->vp_idx, global_resets,
619 atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count));
623 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
624 "Updating sess %p s_id %x:%x:%x, loop_id %d) to d_id %x:%x:%x, "
625 "loop_id %d", sess, sess->s_id.b.domain, sess->s_id.b.al_pa,
626 sess->s_id.b.area, sess->loop_id, fcport->d_id.b.domain,
627 fcport->d_id.b.al_pa, fcport->d_id.b.area, fcport->loop_id);
629 sess->s_id = fcport->d_id;
630 sess->loop_id = fcport->loop_id;
631 sess->conf_compl_supported = !!(fcport->flags &
632 FCF_CONF_COMP_SUPPORTED);
643 /* ha->hardware_lock supposed to be held on entry */
644 static void qlt_undelete_sess(struct qla_tgt_sess *sess)
646 BUG_ON(!sess->deleted);
648 list_del(&sess->del_list_entry);
652 static void qlt_del_sess_work_fn(struct delayed_work *work)
654 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
656 struct scsi_qla_host *vha = tgt->vha;
657 struct qla_hw_data *ha = vha->hw;
658 struct qla_tgt_sess *sess;
661 spin_lock_irqsave(&ha->hardware_lock, flags);
662 while (!list_empty(&tgt->del_sess_list)) {
663 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
665 if (time_after_eq(jiffies, sess->expires)) {
668 qlt_undelete_sess(sess);
670 spin_unlock_irqrestore(&ha->hardware_lock, flags);
671 cancel = qlt_check_fcport_exist(vha, sess);
676 * sess was again deleted while we were
679 spin_lock_irqsave(&ha->hardware_lock,
684 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf049,
685 "qla_target(%d): cancel deletion of "
686 "session for port %02x:%02x:%02x:%02x:%02x:"
687 "%02x:%02x:%02x (loop ID %d), because "
688 " it isn't deleted by firmware",
689 vha->vp_idx, sess->port_name[0],
690 sess->port_name[1], sess->port_name[2],
691 sess->port_name[3], sess->port_name[4],
692 sess->port_name[5], sess->port_name[6],
693 sess->port_name[7], sess->loop_id);
695 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
696 "Timeout: sess %p about to be deleted\n",
698 ha->tgt.tgt_ops->shutdown_sess(sess);
699 ha->tgt.tgt_ops->put_sess(sess);
702 spin_lock_irqsave(&ha->hardware_lock, flags);
704 schedule_delayed_work(&tgt->sess_del_work,
705 jiffies - sess->expires);
709 spin_unlock_irqrestore(&ha->hardware_lock, flags);
713 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
714 * Caller must put it.
716 static struct qla_tgt_sess *qlt_create_sess(
717 struct scsi_qla_host *vha,
721 struct qla_hw_data *ha = vha->hw;
722 struct qla_tgt_sess *sess;
724 unsigned char be_sid[3];
726 /* Check to avoid double sessions */
727 spin_lock_irqsave(&ha->hardware_lock, flags);
728 list_for_each_entry(sess, &ha->tgt.qla_tgt->sess_list,
730 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
731 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
732 "Double sess %p found (s_id %x:%x:%x, "
733 "loop_id %d), updating to d_id %x:%x:%x, "
734 "loop_id %d", sess, sess->s_id.b.domain,
735 sess->s_id.b.al_pa, sess->s_id.b.area,
736 sess->loop_id, fcport->d_id.b.domain,
737 fcport->d_id.b.al_pa, fcport->d_id.b.area,
741 qlt_undelete_sess(sess);
743 kref_get(&sess->se_sess->sess_kref);
744 sess->s_id = fcport->d_id;
745 sess->loop_id = fcport->loop_id;
746 sess->conf_compl_supported = !!(fcport->flags &
747 FCF_CONF_COMP_SUPPORTED);
748 if (sess->local && !local)
750 spin_unlock_irqrestore(&ha->hardware_lock, flags);
755 spin_unlock_irqrestore(&ha->hardware_lock, flags);
757 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
759 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
760 "qla_target(%u): session allocation failed, "
761 "all commands from port %02x:%02x:%02x:%02x:"
762 "%02x:%02x:%02x:%02x will be refused", vha->vp_idx,
763 fcport->port_name[0], fcport->port_name[1],
764 fcport->port_name[2], fcport->port_name[3],
765 fcport->port_name[4], fcport->port_name[5],
766 fcport->port_name[6], fcport->port_name[7]);
770 sess->tgt = ha->tgt.qla_tgt;
772 sess->s_id = fcport->d_id;
773 sess->loop_id = fcport->loop_id;
776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
777 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
778 sess, ha->tgt.qla_tgt);
780 be_sid[0] = sess->s_id.b.domain;
781 be_sid[1] = sess->s_id.b.area;
782 be_sid[2] = sess->s_id.b.al_pa;
784 * Determine if this fc_port->port_name is allowed to access
785 * target mode using explict NodeACLs+MappedLUNs, or using
786 * TPG demo mode. If this is successful a target mode FC nexus
789 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
790 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
795 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
796 * access across ->hardware_lock reaquire.
798 kref_get(&sess->se_sess->sess_kref);
800 sess->conf_compl_supported = !!(fcport->flags &
801 FCF_CONF_COMP_SUPPORTED);
802 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
803 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
805 spin_lock_irqsave(&ha->hardware_lock, flags);
806 list_add_tail(&sess->sess_list_entry, &ha->tgt.qla_tgt->sess_list);
807 ha->tgt.qla_tgt->sess_count++;
808 spin_unlock_irqrestore(&ha->hardware_lock, flags);
810 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
811 "qla_target(%d): %ssession for wwn %02x:%02x:%02x:%02x:"
812 "%02x:%02x:%02x:%02x (loop_id %d, s_id %x:%x:%x, confirmed"
813 " completion %ssupported) added\n",
814 vha->vp_idx, local ? "local " : "", fcport->port_name[0],
815 fcport->port_name[1], fcport->port_name[2], fcport->port_name[3],
816 fcport->port_name[4], fcport->port_name[5], fcport->port_name[6],
817 fcport->port_name[7], fcport->loop_id, sess->s_id.b.domain,
818 sess->s_id.b.area, sess->s_id.b.al_pa, sess->conf_compl_supported ?
825 * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
827 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
829 struct qla_hw_data *ha = vha->hw;
830 struct qla_tgt *tgt = ha->tgt.qla_tgt;
831 struct qla_tgt_sess *sess;
834 if (!vha->hw->tgt.tgt_ops)
837 if (!tgt || (fcport->port_type != FCT_INITIATOR))
840 spin_lock_irqsave(&ha->hardware_lock, flags);
842 spin_unlock_irqrestore(&ha->hardware_lock, flags);
845 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
847 spin_unlock_irqrestore(&ha->hardware_lock, flags);
849 mutex_lock(&ha->tgt.tgt_mutex);
850 sess = qlt_create_sess(vha, fcport, false);
851 mutex_unlock(&ha->tgt.tgt_mutex);
853 spin_lock_irqsave(&ha->hardware_lock, flags);
855 kref_get(&sess->se_sess->sess_kref);
858 qlt_undelete_sess(sess);
860 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
861 "qla_target(%u): %ssession for port %02x:"
862 "%02x:%02x:%02x:%02x:%02x:%02x:%02x (loop ID %d) "
863 "reappeared\n", vha->vp_idx, sess->local ? "local "
864 : "", sess->port_name[0], sess->port_name[1],
865 sess->port_name[2], sess->port_name[3],
866 sess->port_name[4], sess->port_name[5],
867 sess->port_name[6], sess->port_name[7],
870 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
871 "Reappeared sess %p\n", sess);
873 sess->s_id = fcport->d_id;
874 sess->loop_id = fcport->loop_id;
875 sess->conf_compl_supported = !!(fcport->flags &
876 FCF_CONF_COMP_SUPPORTED);
879 if (sess && sess->local) {
880 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
881 "qla_target(%u): local session for "
882 "port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
883 "(loop ID %d) became global\n", vha->vp_idx,
884 fcport->port_name[0], fcport->port_name[1],
885 fcport->port_name[2], fcport->port_name[3],
886 fcport->port_name[4], fcport->port_name[5],
887 fcport->port_name[6], fcport->port_name[7],
891 spin_unlock_irqrestore(&ha->hardware_lock, flags);
893 ha->tgt.tgt_ops->put_sess(sess);
896 void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
898 struct qla_hw_data *ha = vha->hw;
899 struct qla_tgt *tgt = ha->tgt.qla_tgt;
900 struct qla_tgt_sess *sess;
903 if (!vha->hw->tgt.tgt_ops)
906 if (!tgt || (fcport->port_type != FCT_INITIATOR))
909 spin_lock_irqsave(&ha->hardware_lock, flags);
911 spin_unlock_irqrestore(&ha->hardware_lock, flags);
914 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
916 spin_unlock_irqrestore(&ha->hardware_lock, flags);
920 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
923 qlt_schedule_sess_for_deletion(sess, false);
924 spin_unlock_irqrestore(&ha->hardware_lock, flags);
927 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
929 struct qla_hw_data *ha = tgt->ha;
933 * We need to protect against race, when tgt is freed before or
936 spin_lock_irqsave(&ha->hardware_lock, flags);
937 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
938 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
939 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
940 res = (tgt->sess_count == 0);
941 spin_unlock_irqrestore(&ha->hardware_lock, flags);
946 /* Called by tcm_qla2xxx configfs code */
947 void qlt_stop_phase1(struct qla_tgt *tgt)
949 struct scsi_qla_host *vha = tgt->vha;
950 struct qla_hw_data *ha = tgt->ha;
953 if (tgt->tgt_stop || tgt->tgt_stopped) {
954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
955 "Already in tgt->tgt_stop or tgt_stopped state\n");
960 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
963 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
964 * Lock is needed, because we still can get an incoming packet.
966 mutex_lock(&ha->tgt.tgt_mutex);
967 spin_lock_irqsave(&ha->hardware_lock, flags);
969 qlt_clear_tgt_db(tgt, true);
970 spin_unlock_irqrestore(&ha->hardware_lock, flags);
971 mutex_unlock(&ha->tgt.tgt_mutex);
973 flush_delayed_work_sync(&tgt->sess_del_work);
975 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
976 "Waiting for sess works (tgt %p)", tgt);
977 spin_lock_irqsave(&tgt->sess_work_lock, flags);
978 while (!list_empty(&tgt->sess_works_list)) {
979 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
980 flush_scheduled_work();
981 spin_lock_irqsave(&tgt->sess_work_lock, flags);
983 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
985 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
986 "Waiting for tgt %p: list_empty(sess_list)=%d "
987 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
990 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
993 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
994 qlt_disable_vha(vha);
996 /* Wait for sessions to clear out (just in case) */
997 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
999 EXPORT_SYMBOL(qlt_stop_phase1);
1001 /* Called by tcm_qla2xxx configfs code */
1002 void qlt_stop_phase2(struct qla_tgt *tgt)
1004 struct qla_hw_data *ha = tgt->ha;
1005 unsigned long flags;
1007 if (tgt->tgt_stopped) {
1008 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf04f,
1009 "Already in tgt->tgt_stopped state\n");
1014 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00b,
1015 "Waiting for %d IRQ commands to complete (tgt %p)",
1016 tgt->irq_cmd_count, tgt);
1018 mutex_lock(&ha->tgt.tgt_mutex);
1019 spin_lock_irqsave(&ha->hardware_lock, flags);
1020 while (tgt->irq_cmd_count != 0) {
1021 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1023 spin_lock_irqsave(&ha->hardware_lock, flags);
1026 tgt->tgt_stopped = 1;
1027 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1028 mutex_unlock(&ha->tgt.tgt_mutex);
1030 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00c, "Stop of tgt %p finished",
1033 EXPORT_SYMBOL(qlt_stop_phase2);
1035 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1036 void qlt_release(struct qla_tgt *tgt)
1038 struct qla_hw_data *ha = tgt->ha;
1040 if ((ha->tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
1041 qlt_stop_phase2(tgt);
1043 ha->tgt.qla_tgt = NULL;
1045 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00d,
1046 "Release of tgt %p finished\n", tgt);
1051 /* ha->hardware_lock supposed to be held on entry */
1052 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1053 const void *param, unsigned int param_size)
1055 struct qla_tgt_sess_work_param *prm;
1056 unsigned long flags;
1058 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1060 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1061 "qla_target(%d): Unable to create session "
1062 "work, command will be refused", 0);
1066 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1067 "Scheduling work (type %d, prm %p)"
1068 " to find session for param %p (size %d, tgt %p)\n",
1069 type, prm, param, param_size, tgt);
1072 memcpy(&prm->tm_iocb, param, param_size);
1074 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1075 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1076 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1078 schedule_work(&tgt->sess_work);
1084 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1086 static void qlt_send_notify_ack(struct scsi_qla_host *vha,
1087 struct imm_ntfy_from_isp *ntfy,
1088 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1089 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1091 struct qla_hw_data *ha = vha->hw;
1093 struct nack_to_isp *nack;
1095 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1097 /* Send marker if required */
1098 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1101 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1103 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1104 "qla_target(%d): %s failed: unable to allocate "
1105 "request packet\n", vha->vp_idx, __func__);
1109 if (ha->tgt.qla_tgt != NULL)
1110 ha->tgt.qla_tgt->notify_ack_expected++;
1112 pkt->entry_type = NOTIFY_ACK_TYPE;
1113 pkt->entry_count = 1;
1115 nack = (struct nack_to_isp *)pkt;
1116 nack->ox_id = ntfy->ox_id;
1118 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1119 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1120 nack->u.isp24.flags = ntfy->u.isp24.flags &
1121 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1123 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1124 nack->u.isp24.status = ntfy->u.isp24.status;
1125 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1126 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1127 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1128 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1129 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1130 nack->u.isp24.srr_reject_code = srr_reject_code;
1131 nack->u.isp24.srr_reject_code_expl = srr_explan;
1132 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1134 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1135 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1136 vha->vp_idx, nack->u.isp24.status);
1138 qla2x00_start_iocbs(vha, vha->req);
1142 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1144 static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1145 struct abts_recv_from_24xx *abts, uint32_t status,
1148 struct qla_hw_data *ha = vha->hw;
1149 struct abts_resp_to_24xx *resp;
1153 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1154 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1157 /* Send marker if required */
1158 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1161 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1163 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1164 "qla_target(%d): %s failed: unable to allocate "
1165 "request packet", vha->vp_idx, __func__);
1169 resp->entry_type = ABTS_RESP_24XX;
1170 resp->entry_count = 1;
1171 resp->nport_handle = abts->nport_handle;
1172 resp->vp_index = vha->vp_idx;
1173 resp->sof_type = abts->sof_type;
1174 resp->exchange_address = abts->exchange_address;
1175 resp->fcp_hdr_le = abts->fcp_hdr_le;
1176 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1177 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1178 F_CTL_SEQ_INITIATIVE);
1179 p = (uint8_t *)&f_ctl;
1180 resp->fcp_hdr_le.f_ctl[0] = *p++;
1181 resp->fcp_hdr_le.f_ctl[1] = *p++;
1182 resp->fcp_hdr_le.f_ctl[2] = *p;
1184 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1185 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1186 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1187 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1188 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1189 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1191 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1192 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1193 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1194 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1195 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1196 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1198 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1199 if (status == FCP_TMF_CMPL) {
1200 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1201 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1202 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1203 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1204 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1205 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1207 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1208 resp->payload.ba_rjt.reason_code =
1209 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1210 /* Other bytes are zero */
1213 ha->tgt.qla_tgt->abts_resp_expected++;
1215 qla2x00_start_iocbs(vha, vha->req);
1219 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1221 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1222 struct abts_resp_from_24xx_fw *entry)
1224 struct ctio7_to_24xx *ctio;
1226 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1227 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1228 /* Send marker if required */
1229 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1232 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1234 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1235 "qla_target(%d): %s failed: unable to allocate "
1236 "request packet\n", vha->vp_idx, __func__);
1241 * We've got on entrance firmware's response on by us generated
1242 * ABTS response. So, in it ID fields are reversed.
1245 ctio->entry_type = CTIO_TYPE7;
1246 ctio->entry_count = 1;
1247 ctio->nport_handle = entry->nport_handle;
1248 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1249 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1250 ctio->vp_index = vha->vp_idx;
1251 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1252 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1253 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1254 ctio->exchange_addr = entry->exchange_addr_to_abort;
1255 ctio->u.status1.flags =
1256 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1257 CTIO7_FLAGS_TERMINATE);
1258 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1260 qla2x00_start_iocbs(vha, vha->req);
1262 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1263 FCP_TMF_CMPL, true);
1266 /* ha->hardware_lock supposed to be held on entry */
1267 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1268 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1270 struct qla_hw_data *ha = vha->hw;
1271 struct qla_tgt_mgmt_cmd *mcmd;
1274 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1275 "qla_target(%d): task abort (tag=%d)\n",
1276 vha->vp_idx, abts->exchange_addr_to_abort);
1278 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1280 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1281 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1282 vha->vp_idx, __func__);
1285 memset(mcmd, 0, sizeof(*mcmd));
1288 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1290 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, TMR_ABORT_TASK,
1291 abts->exchange_addr_to_abort);
1293 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1294 "qla_target(%d): tgt_ops->handle_tmr()"
1295 " failed: %d", vha->vp_idx, rc);
1296 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1304 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1306 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1307 struct abts_recv_from_24xx *abts)
1309 struct qla_hw_data *ha = vha->hw;
1310 struct qla_tgt_sess *sess;
1311 uint32_t tag = abts->exchange_addr_to_abort;
1315 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1316 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1317 "qla_target(%d): ABTS: Abort Sequence not "
1318 "supported\n", vha->vp_idx);
1319 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1323 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1324 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1325 "qla_target(%d): ABTS: Unknown Exchange "
1326 "Address received\n", vha->vp_idx);
1327 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1331 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1332 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1333 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1334 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1335 le32_to_cpu(abts->fcp_hdr_le.parameter));
1337 s_id[0] = abts->fcp_hdr_le.s_id[2];
1338 s_id[1] = abts->fcp_hdr_le.s_id[1];
1339 s_id[2] = abts->fcp_hdr_le.s_id[0];
1341 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1343 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1344 "qla_target(%d): task abort for non-existant session\n",
1346 rc = qlt_sched_sess_work(ha->tgt.qla_tgt,
1347 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1349 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1355 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1357 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1358 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1360 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1366 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1368 static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1369 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1371 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1372 struct ctio7_to_24xx *ctio;
1374 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1375 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1376 ha, atio, resp_code);
1378 /* Send marker if required */
1379 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1382 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1384 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1385 "qla_target(%d): %s failed: unable to allocate "
1386 "request packet\n", ha->vp_idx, __func__);
1390 ctio->entry_type = CTIO_TYPE7;
1391 ctio->entry_count = 1;
1392 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1393 ctio->nport_handle = mcmd->sess->loop_id;
1394 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1395 ctio->vp_index = ha->vp_idx;
1396 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1397 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1398 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1399 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1400 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1401 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1402 CTIO7_FLAGS_SEND_STATUS);
1403 ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1404 ctio->u.status1.scsi_status =
1405 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1406 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
1407 ((uint32_t *)ctio->u.status1.sense_data)[0] = cpu_to_be32(resp_code);
1409 qla2x00_start_iocbs(ha, ha->req);
1412 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1414 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1416 EXPORT_SYMBOL(qlt_free_mcmd);
1418 /* callback from target fabric module code */
1419 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1421 struct scsi_qla_host *vha = mcmd->sess->vha;
1422 struct qla_hw_data *ha = vha->hw;
1423 unsigned long flags;
1425 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1426 "TM response mcmd (%p) status %#x state %#x",
1427 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1429 spin_lock_irqsave(&ha->hardware_lock, flags);
1430 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1431 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1434 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1435 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1436 mcmd->fc_tm_rsp, false);
1438 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1442 * Make the callback for ->free_mcmd() to queue_work() and invoke
1443 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1444 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1445 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1446 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1447 * qlt_xmit_tm_rsp() returns here..
1449 ha->tgt.tgt_ops->free_mcmd(mcmd);
1450 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1452 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1455 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1457 struct qla_tgt_cmd *cmd = prm->cmd;
1459 BUG_ON(cmd->sg_cnt == 0);
1461 prm->sg = (struct scatterlist *)cmd->sg;
1462 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1463 cmd->sg_cnt, cmd->dma_data_direction);
1464 if (unlikely(prm->seg_cnt == 0))
1467 prm->cmd->sg_mapped = 1;
1470 * If greater than four sg entries then we need to allocate
1471 * the continuation entries
1473 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1474 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1475 prm->tgt->datasegs_per_cmd, prm->tgt->datasegs_per_cont);
1477 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
1478 prm->seg_cnt, prm->req_cnt);
1482 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1483 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1484 0, prm->cmd->sg_cnt);
1488 static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
1489 struct qla_tgt_cmd *cmd)
1491 struct qla_hw_data *ha = vha->hw;
1493 BUG_ON(!cmd->sg_mapped);
1494 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1498 static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1501 struct qla_hw_data *ha = vha->hw;
1502 device_reg_t __iomem *reg = ha->iobase;
1505 if (vha->req->cnt < (req_cnt + 2)) {
1506 cnt = (uint16_t)RD_REG_DWORD(®->isp24.req_q_out);
1508 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
1509 "Request ring circled: cnt=%d, vha->->ring_index=%d, "
1510 "vha->req->cnt=%d, req_cnt=%d\n", cnt,
1511 vha->req->ring_index, vha->req->cnt, req_cnt);
1512 if (vha->req->ring_index < cnt)
1513 vha->req->cnt = cnt - vha->req->ring_index;
1515 vha->req->cnt = vha->req->length -
1516 (vha->req->ring_index - cnt);
1519 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1520 ql_dbg(ql_dbg_tgt, vha, 0xe00b,
1521 "qla_target(%d): There is no room in the "
1522 "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
1523 "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
1524 vha->req->cnt, req_cnt);
1527 vha->req->cnt -= req_cnt;
1533 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1535 static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1537 /* Adjust ring index. */
1538 vha->req->ring_index++;
1539 if (vha->req->ring_index == vha->req->length) {
1540 vha->req->ring_index = 0;
1541 vha->req->ring_ptr = vha->req->ring;
1543 vha->req->ring_ptr++;
1545 return (cont_entry_t *)vha->req->ring_ptr;
1548 /* ha->hardware_lock supposed to be held on entry */
1549 static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1551 struct qla_hw_data *ha = vha->hw;
1554 h = ha->tgt.current_handle;
1555 /* always increment cmd handle */
1558 if (h > MAX_OUTSTANDING_COMMANDS)
1559 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1560 if (h == ha->tgt.current_handle) {
1561 ql_dbg(ql_dbg_tgt, vha, 0xe04e,
1562 "qla_target(%d): Ran out of "
1563 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1564 h = QLA_TGT_NULL_HANDLE;
1567 } while ((h == QLA_TGT_NULL_HANDLE) ||
1568 (h == QLA_TGT_SKIP_HANDLE) ||
1569 (ha->tgt.cmds[h-1] != NULL));
1571 if (h != QLA_TGT_NULL_HANDLE)
1572 ha->tgt.current_handle = h;
1577 /* ha->hardware_lock supposed to be held on entry */
1578 static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1579 struct scsi_qla_host *vha)
1582 struct ctio7_to_24xx *pkt;
1583 struct qla_hw_data *ha = vha->hw;
1584 struct atio_from_isp *atio = &prm->cmd->atio;
1586 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1588 memset(pkt, 0, sizeof(*pkt));
1590 pkt->entry_type = CTIO_TYPE7;
1591 pkt->entry_count = (uint8_t)prm->req_cnt;
1592 pkt->vp_index = vha->vp_idx;
1594 h = qlt_make_handle(vha);
1595 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1597 * CTIO type 7 from the firmware doesn't provide a way to
1598 * know the initiator's LOOP ID, hence we can't find
1599 * the session and, so, the command.
1603 ha->tgt.cmds[h-1] = prm->cmd;
1605 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1606 pkt->nport_handle = prm->cmd->loop_id;
1607 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1608 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1609 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1610 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1611 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1612 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
1613 pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1614 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1616 ql_dbg(ql_dbg_tgt, vha, 0xe00c,
1617 "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
1618 vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT,
1619 le16_to_cpu(pkt->u.status0.ox_id));
1624 * ha->hardware_lock supposed to be held on entry. We have already made sure
1625 * that there is sufficient amount of request entries to not drop it.
1627 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1628 struct scsi_qla_host *vha)
1631 uint32_t *dword_ptr;
1632 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1634 /* Build continuation packets */
1635 while (prm->seg_cnt > 0) {
1636 cont_a64_entry_t *cont_pkt64 =
1637 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1640 * Make sure that from cont_pkt64 none of
1641 * 64-bit specific fields used for 32-bit
1642 * addressing. Cast to (cont_entry_t *) for
1646 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1648 cont_pkt64->entry_count = 1;
1649 cont_pkt64->sys_define = 0;
1651 if (enable_64bit_addressing) {
1652 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1654 (uint32_t *)&cont_pkt64->dseg_0_address;
1656 cont_pkt64->entry_type = CONTINUE_TYPE;
1658 (uint32_t *)&((cont_entry_t *)
1659 cont_pkt64)->dseg_0_address;
1662 /* Load continuation entry data segments */
1664 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1665 cnt++, prm->seg_cnt--) {
1667 cpu_to_le32(pci_dma_lo32
1668 (sg_dma_address(prm->sg)));
1669 if (enable_64bit_addressing) {
1671 cpu_to_le32(pci_dma_hi32
1675 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1677 ql_dbg(ql_dbg_tgt, vha, 0xe00d,
1678 "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
1679 (long long unsigned int)
1680 pci_dma_hi32(sg_dma_address(prm->sg)),
1681 (long long unsigned int)
1682 pci_dma_lo32(sg_dma_address(prm->sg)),
1683 (int)sg_dma_len(prm->sg));
1685 prm->sg = sg_next(prm->sg);
1691 * ha->hardware_lock supposed to be held on entry. We have already made sure
1692 * that there is sufficient amount of request entries to not drop it.
1694 static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1695 struct scsi_qla_host *vha)
1698 uint32_t *dword_ptr;
1699 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1700 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1702 ql_dbg(ql_dbg_tgt, vha, 0xe00e,
1703 "iocb->scsi_status=%x, iocb->flags=%x\n",
1704 le16_to_cpu(pkt24->u.status0.scsi_status),
1705 le16_to_cpu(pkt24->u.status0.flags));
1707 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1709 /* Setup packet address segment pointer */
1710 dword_ptr = pkt24->u.status0.dseg_0_address;
1712 /* Set total data segment count */
1714 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1716 if (prm->seg_cnt == 0) {
1717 /* No data transfer */
1723 /* If scatter gather */
1724 ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
1726 /* Load command entry data segments */
1728 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1729 cnt++, prm->seg_cnt--) {
1731 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1732 if (enable_64bit_addressing) {
1734 cpu_to_le32(pci_dma_hi32(
1735 sg_dma_address(prm->sg)));
1737 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1739 ql_dbg(ql_dbg_tgt, vha, 0xe010,
1740 "S/G Segment phys_addr=%llx:%llx, len=%d\n",
1741 (long long unsigned int)pci_dma_hi32(sg_dma_address(
1743 (long long unsigned int)pci_dma_lo32(sg_dma_address(
1745 (int)sg_dma_len(prm->sg));
1747 prm->sg = sg_next(prm->sg);
1750 qlt_load_cont_data_segments(prm, vha);
1753 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1755 return cmd->bufflen > 0;
1759 * Called without ha->hardware_lock held
1761 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1762 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1763 uint32_t *full_req_cnt)
1765 struct qla_tgt *tgt = cmd->tgt;
1766 struct scsi_qla_host *vha = tgt->vha;
1767 struct qla_hw_data *ha = vha->hw;
1768 struct se_cmd *se_cmd = &cmd->se_cmd;
1770 if (unlikely(cmd->aborted)) {
1771 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1772 "qla_target(%d): terminating exchange "
1773 "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
1776 cmd->state = QLA_TGT_STATE_ABORTED;
1778 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1780 /* !! At this point cmd could be already freed !! */
1781 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1784 ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u\n",
1785 vha->vp_idx, cmd->tag);
1789 prm->rq_result = scsi_status;
1790 prm->sense_buffer = &cmd->sense_buffer[0];
1791 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1795 prm->add_status_pkt = 0;
1797 ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
1798 prm->rq_result, xmit_type);
1800 /* Send marker if required */
1801 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1804 ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
1806 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1807 if (qlt_pci_map_calc_cnt(prm) != 0)
1811 *full_req_cnt = prm->req_cnt;
1813 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1814 prm->residual = se_cmd->residual_count;
1815 ql_dbg(ql_dbg_tgt, vha, 0xe014,
1816 "Residual underflow: %d (tag %d, "
1817 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1818 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1819 cmd->bufflen, prm->rq_result);
1820 prm->rq_result |= SS_RESIDUAL_UNDER;
1821 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1822 prm->residual = se_cmd->residual_count;
1823 ql_dbg(ql_dbg_tgt, vha, 0xe015,
1824 "Residual overflow: %d (tag %d, "
1825 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1826 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1827 cmd->bufflen, prm->rq_result);
1828 prm->rq_result |= SS_RESIDUAL_OVER;
1831 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1833 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1834 * ignored in *xmit_response() below
1836 if (qlt_has_data(cmd)) {
1837 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1838 (IS_FWI2_CAPABLE(ha) &&
1839 (prm->rq_result != 0))) {
1840 prm->add_status_pkt = 1;
1846 ql_dbg(ql_dbg_tgt, vha, 0xe016,
1847 "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
1848 prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
1853 static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1854 struct qla_tgt_cmd *cmd, int sending_sense)
1856 if (ha->tgt.enable_class_2)
1860 return cmd->conf_compl_supported;
1862 return ha->tgt.enable_explicit_conf &&
1863 cmd->conf_compl_supported;
1866 #ifdef CONFIG_QLA_TGT_DEBUG_SRR
1868 * Original taken from the XFS code
1870 static unsigned long qlt_srr_random(void)
1873 static unsigned long RandomValue;
1874 static DEFINE_SPINLOCK(lock);
1875 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1879 unsigned long flags;
1881 spin_lock_irqsave(&lock, flags);
1883 RandomValue = jiffies;
1889 rv = 16807 * lo - 2836 * hi;
1893 spin_unlock_irqrestore(&lock, flags);
1897 static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1899 #if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1900 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1902 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1903 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1904 "Dropping cmd %p (tag %d) status", cmd, cmd->tag);
1908 * It's currently not possible to simulate SRRs for FCP_WRITE without
1909 * a physical link layer failure, so don't even try here..
1911 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1914 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1915 ((qlt_srr_random() % 100) == 20)) {
1917 unsigned int tot_len = 0;
1920 leave = qlt_srr_random() % cmd->sg_cnt;
1922 for (i = 0; i < leave; i++)
1923 tot_len += cmd->sg[i].length;
1925 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1926 "Cutting cmd %p (tag %d) buffer"
1927 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1928 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
1929 cmd->bufflen, cmd->sg_cnt);
1931 cmd->bufflen = tot_len;
1932 cmd->sg_cnt = leave;
1935 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1936 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1938 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1939 "Cutting cmd %p (tag %d) buffer head "
1940 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
1943 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1944 else if (qlt_set_data_offset(cmd, offset)) {
1945 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1946 "qlt_set_data_offset() failed (tag %d)", cmd->tag);
1951 static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1955 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1956 struct qla_tgt_prm *prm)
1958 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1959 (uint32_t)sizeof(ctio->u.status1.sense_data));
1960 ctio->u.status0.flags |=
1961 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1962 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1963 ctio->u.status0.flags |= __constant_cpu_to_le16(
1964 CTIO7_FLAGS_EXPLICIT_CONFORM |
1965 CTIO7_FLAGS_CONFORM_REQ);
1967 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1968 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1969 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1972 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1973 if (prm->cmd->se_cmd.scsi_status != 0) {
1974 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1975 "Skipping EXPLICIT_CONFORM and "
1976 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1977 "non GOOD status\n");
1978 goto skip_explict_conf;
1980 ctio->u.status1.flags |= __constant_cpu_to_le16(
1981 CTIO7_FLAGS_EXPLICIT_CONFORM |
1982 CTIO7_FLAGS_CONFORM_REQ);
1985 ctio->u.status1.flags &=
1986 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1987 ctio->u.status1.flags |=
1988 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1989 ctio->u.status1.scsi_status |=
1990 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1991 ctio->u.status1.sense_length =
1992 cpu_to_le16(prm->sense_buffer_len);
1993 for (i = 0; i < prm->sense_buffer_len/4; i++)
1994 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1995 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1997 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
2000 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
2001 "qla_target(%d): %d bytes of sense "
2002 "lost", prm->tgt->ha->vp_idx,
2003 prm->sense_buffer_len % 4);
2009 ctio->u.status1.flags &=
2010 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2011 ctio->u.status1.flags |=
2012 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2013 ctio->u.status1.sense_length = 0;
2014 memset(ctio->u.status1.sense_data, 0,
2015 sizeof(ctio->u.status1.sense_data));
2018 /* Sense with len > 24, is it possible ??? */
2022 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2023 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2025 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2026 uint8_t scsi_status)
2028 struct scsi_qla_host *vha = cmd->vha;
2029 struct qla_hw_data *ha = vha->hw;
2030 struct ctio7_to_24xx *pkt;
2031 struct qla_tgt_prm prm;
2032 uint32_t full_req_cnt = 0;
2033 unsigned long flags = 0;
2036 memset(&prm, 0, sizeof(prm));
2037 qlt_check_srr_debug(cmd, &xmit_type);
2039 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
2040 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, "
2041 "cmd->dma_data_direction=%d\n", (xmit_type & QLA_TGT_XMIT_STATUS) ?
2042 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction);
2044 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2046 if (unlikely(res != 0)) {
2047 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
2053 spin_lock_irqsave(&ha->hardware_lock, flags);
2055 /* Does F/W have an IOCBs for this request */
2056 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2058 goto out_unmap_unlock;
2060 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2061 if (unlikely(res != 0))
2062 goto out_unmap_unlock;
2065 pkt = (struct ctio7_to_24xx *)prm.pkt;
2067 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2068 pkt->u.status0.flags |=
2069 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2070 CTIO7_FLAGS_STATUS_MODE_0);
2072 qlt_load_data_segments(&prm, vha);
2074 if (prm.add_status_pkt == 0) {
2075 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2076 pkt->u.status0.scsi_status =
2077 cpu_to_le16(prm.rq_result);
2078 pkt->u.status0.residual =
2079 cpu_to_le32(prm.residual);
2080 pkt->u.status0.flags |= __constant_cpu_to_le16(
2081 CTIO7_FLAGS_SEND_STATUS);
2082 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2083 pkt->u.status0.flags |=
2084 __constant_cpu_to_le16(
2085 CTIO7_FLAGS_EXPLICIT_CONFORM |
2086 CTIO7_FLAGS_CONFORM_REQ);
2092 * We have already made sure that there is sufficient
2093 * amount of request entries to not drop HW lock in
2096 struct ctio7_to_24xx *ctio =
2097 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2099 ql_dbg(ql_dbg_tgt, vha, 0xe019,
2100 "Building additional status packet\n");
2102 memcpy(ctio, pkt, sizeof(*ctio));
2103 ctio->entry_count = 1;
2104 ctio->dseg_count = 0;
2105 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
2106 CTIO7_FLAGS_DATA_IN);
2108 /* Real finish is ctio_m1's finish */
2109 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
2110 pkt->u.status0.flags |= __constant_cpu_to_le16(
2111 CTIO7_FLAGS_DONT_RET_CTIO);
2112 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2114 pr_debug("Status CTIO7: %p\n", ctio);
2117 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2120 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
2122 ql_dbg(ql_dbg_tgt, vha, 0xe01a,
2123 "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
2126 qla2x00_start_iocbs(vha, vha->req);
2127 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2133 qlt_unmap_sg(vha, cmd);
2134 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2138 EXPORT_SYMBOL(qlt_xmit_response);
2140 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2142 struct ctio7_to_24xx *pkt;
2143 struct scsi_qla_host *vha = cmd->vha;
2144 struct qla_hw_data *ha = vha->hw;
2145 struct qla_tgt *tgt = cmd->tgt;
2146 struct qla_tgt_prm prm;
2147 unsigned long flags;
2150 memset(&prm, 0, sizeof(prm));
2156 /* Send marker if required */
2157 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2160 ql_dbg(ql_dbg_tgt, vha, 0xe01b, "CTIO_start: vha(%d)",
2163 /* Calculate number of entries and segments required */
2164 if (qlt_pci_map_calc_cnt(&prm) != 0)
2167 spin_lock_irqsave(&ha->hardware_lock, flags);
2169 /* Does F/W have an IOCBs for this request */
2170 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2172 goto out_unlock_free_unmap;
2174 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2175 if (unlikely(res != 0))
2176 goto out_unlock_free_unmap;
2177 pkt = (struct ctio7_to_24xx *)prm.pkt;
2178 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2179 CTIO7_FLAGS_STATUS_MODE_0);
2180 qlt_load_data_segments(&prm, vha);
2182 cmd->state = QLA_TGT_STATE_NEED_DATA;
2184 qla2x00_start_iocbs(vha, vha->req);
2185 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2189 out_unlock_free_unmap:
2191 qlt_unmap_sg(vha, cmd);
2192 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2196 EXPORT_SYMBOL(qlt_rdy_to_xfer);
2198 /* If hardware_lock held on entry, might drop it, then reaquire */
2199 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2200 static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2201 struct qla_tgt_cmd *cmd,
2202 struct atio_from_isp *atio)
2204 struct ctio7_to_24xx *ctio24;
2205 struct qla_hw_data *ha = vha->hw;
2209 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2211 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
2213 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2214 "qla_target(%d): %s failed: unable to allocate "
2215 "request packet\n", vha->vp_idx, __func__);
2220 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2221 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2222 "qla_target(%d): Terminating cmd %p with "
2223 "incorrect state %d\n", vha->vp_idx, cmd,
2229 pkt->entry_count = 1;
2230 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2232 ctio24 = (struct ctio7_to_24xx *)pkt;
2233 ctio24->entry_type = CTIO_TYPE7;
2234 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2235 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2236 ctio24->vp_index = vha->vp_idx;
2237 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2238 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2239 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2240 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2241 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2242 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2243 CTIO7_FLAGS_TERMINATE);
2244 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
2246 /* Most likely, it isn't needed */
2247 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2248 &atio->u.isp24.fcp_cmnd.add_cdb[
2249 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2250 if (ctio24->u.status1.residual != 0)
2251 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2253 qla2x00_start_iocbs(vha, vha->req);
2257 static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2258 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2260 unsigned long flags;
2263 if (qlt_issue_marker(vha, ha_locked) < 0)
2267 rc = __qlt_send_term_exchange(vha, cmd, atio);
2270 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2271 rc = __qlt_send_term_exchange(vha, cmd, atio);
2272 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2275 if (!ha_locked && !in_interrupt())
2276 msleep(250); /* just in case */
2278 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2282 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2284 BUG_ON(cmd->sg_mapped);
2286 if (unlikely(cmd->free_sg))
2288 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2290 EXPORT_SYMBOL(qlt_free_cmd);
2292 /* ha->hardware_lock supposed to be held on entry */
2293 static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2294 struct qla_tgt_cmd *cmd, void *ctio)
2296 struct qla_tgt_srr_ctio *sc;
2297 struct qla_hw_data *ha = vha->hw;
2298 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2299 struct qla_tgt_srr_imm *imm;
2303 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2304 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2307 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2308 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2313 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2316 /* IRQ is already OFF */
2317 spin_lock(&tgt->srr_lock);
2318 sc->srr_id = tgt->ctio_srr_id;
2319 list_add_tail(&sc->srr_list_entry,
2320 &tgt->srr_ctio_list);
2321 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2322 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2323 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2325 list_for_each_entry(imm, &tgt->srr_imm_list,
2327 if (imm->srr_id == sc->srr_id) {
2333 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2334 "Scheduling srr work\n");
2335 schedule_work(&tgt->srr_work);
2337 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2338 "qla_target(%d): imm_srr_id "
2339 "== ctio_srr_id (%d), but there is no "
2340 "corresponding SRR IMM, deleting CTIO "
2341 "SRR %p\n", vha->vp_idx,
2342 tgt->ctio_srr_id, sc);
2343 list_del(&sc->srr_list_entry);
2344 spin_unlock(&tgt->srr_lock);
2350 spin_unlock(&tgt->srr_lock);
2352 struct qla_tgt_srr_imm *ti;
2354 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2355 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2357 spin_lock(&tgt->srr_lock);
2358 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2360 if (imm->srr_id == tgt->ctio_srr_id) {
2361 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2362 "IMM SRR %p deleted (id %d)\n",
2364 list_del(&imm->srr_list_entry);
2365 qlt_reject_free_srr_imm(vha, imm, 1);
2368 spin_unlock(&tgt->srr_lock);
2377 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2379 static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2380 struct qla_tgt_cmd *cmd, uint32_t status)
2385 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2387 __constant_cpu_to_le16(OF_TERM_EXCH));
2392 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2397 /* ha->hardware_lock supposed to be held on entry */
2398 static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2401 struct qla_hw_data *ha = vha->hw;
2404 if (ha->tgt.cmds[handle] != NULL) {
2405 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2406 ha->tgt.cmds[handle] = NULL;
2412 /* ha->hardware_lock supposed to be held on entry */
2413 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2414 uint32_t handle, void *ctio)
2416 struct qla_tgt_cmd *cmd = NULL;
2418 /* Clear out internal marks */
2419 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2420 CTIO_INTERMEDIATE_HANDLE_MARK);
2422 if (handle != QLA_TGT_NULL_HANDLE) {
2423 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
2424 ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
2425 "SKIP_HANDLE CTIO\n");
2428 /* handle-1 is actually used */
2429 if (unlikely(handle > MAX_OUTSTANDING_COMMANDS)) {
2430 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2431 "qla_target(%d): Wrong handle %x received\n",
2432 vha->vp_idx, handle);
2435 cmd = qlt_get_cmd(vha, handle);
2436 if (unlikely(cmd == NULL)) {
2437 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2438 "qla_target(%d): Suspicious: unable to "
2439 "find the command with handle %x\n", vha->vp_idx,
2443 } else if (ctio != NULL) {
2444 /* We can't get loop ID from CTIO7 */
2445 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2446 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2447 "support NULL handles\n", vha->vp_idx);
2455 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2457 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2458 uint32_t status, void *ctio)
2460 struct qla_hw_data *ha = vha->hw;
2461 struct se_cmd *se_cmd;
2462 struct target_core_fabric_ops *tfo;
2463 struct qla_tgt_cmd *cmd;
2465 ql_dbg(ql_dbg_tgt, vha, 0xe01e,
2466 "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
2467 vha->vp_idx, ctio, status, handle);
2469 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2470 /* That could happen only in case of an error/reset/abort */
2471 if (status != CTIO_SUCCESS) {
2472 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2473 "Intermediate CTIO received"
2474 " (status %x)\n", status);
2479 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
2481 if (status != CTIO_SUCCESS)
2482 qlt_term_ctio_exchange(vha, ctio, NULL, status);
2485 se_cmd = &cmd->se_cmd;
2486 tfo = se_cmd->se_tfo;
2489 qlt_unmap_sg(vha, cmd);
2491 if (unlikely(status != CTIO_SUCCESS)) {
2492 switch (status & 0xFFFF) {
2493 case CTIO_LIP_RESET:
2494 case CTIO_TARGET_RESET:
2497 case CTIO_INVALID_RX_ID:
2499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
2500 "qla_target(%d): CTIO with "
2501 "status %#x received, state %x, se_cmd %p, "
2502 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
2503 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
2504 status, cmd->state, se_cmd);
2507 case CTIO_PORT_LOGGED_OUT:
2508 case CTIO_PORT_UNAVAILABLE:
2509 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
2510 "qla_target(%d): CTIO with PORT LOGGED "
2511 "OUT (29) or PORT UNAVAILABLE (28) status %x "
2512 "received (state %x, se_cmd %p)\n", vha->vp_idx,
2513 status, cmd->state, se_cmd);
2516 case CTIO_SRR_RECEIVED:
2517 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
2518 "qla_target(%d): CTIO with SRR_RECEIVED"
2519 " status %x received (state %x, se_cmd %p)\n",
2520 vha->vp_idx, status, cmd->state, se_cmd);
2521 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
2527 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
2528 "qla_target(%d): CTIO with error status "
2529 "0x%x received (state %x, se_cmd %p\n",
2530 vha->vp_idx, status, cmd->state, se_cmd);
2534 if (cmd->state != QLA_TGT_STATE_NEED_DATA)
2535 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
2539 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
2540 ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
2541 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2544 cmd->state = QLA_TGT_STATE_DATA_IN;
2546 if (unlikely(status != CTIO_SUCCESS))
2549 cmd->write_data_transferred = 1;
2551 ql_dbg(ql_dbg_tgt, vha, 0xe020,
2552 "Data received, context %x, rx_status %d\n",
2555 ha->tgt.tgt_ops->handle_data(cmd);
2557 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
2558 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
2559 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
2561 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
2562 "qla_target(%d): A command in state (%d) should "
2563 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
2566 if (unlikely(status != CTIO_SUCCESS)) {
2567 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
2571 ha->tgt.tgt_ops->free_cmd(cmd);
2574 /* ha->hardware_lock supposed to be held on entry */
2575 /* called via callback from qla2xxx */
2576 void qlt_ctio_completion(struct scsi_qla_host *vha, uint32_t handle)
2578 struct qla_hw_data *ha = vha->hw;
2579 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2581 if (likely(tgt == NULL)) {
2582 ql_dbg(ql_dbg_tgt, vha, 0xe021,
2583 "CTIO, but target mode not enabled"
2584 " (ha %d %p handle %#x)", vha->vp_idx, ha, handle);
2588 tgt->irq_cmd_count++;
2589 qlt_do_ctio_completion(vha, handle, CTIO_SUCCESS, NULL);
2590 tgt->irq_cmd_count--;
2593 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
2598 switch (task_codes) {
2599 case ATIO_SIMPLE_QUEUE:
2600 fcp_task_attr = MSG_SIMPLE_TAG;
2602 case ATIO_HEAD_OF_QUEUE:
2603 fcp_task_attr = MSG_HEAD_TAG;
2605 case ATIO_ORDERED_QUEUE:
2606 fcp_task_attr = MSG_ORDERED_TAG;
2608 case ATIO_ACA_QUEUE:
2609 fcp_task_attr = MSG_ACA_TAG;
2612 fcp_task_attr = MSG_SIMPLE_TAG;
2615 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
2616 "qla_target: unknown task code %x, use ORDERED instead\n",
2618 fcp_task_attr = MSG_ORDERED_TAG;
2622 return fcp_task_attr;
2625 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
2628 * Process context for I/O path into tcm_qla2xxx code
2630 static void qlt_do_work(struct work_struct *work)
2632 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
2633 scsi_qla_host_t *vha = cmd->vha;
2634 struct qla_hw_data *ha = vha->hw;
2635 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2636 struct qla_tgt_sess *sess = NULL;
2637 struct atio_from_isp *atio = &cmd->atio;
2639 unsigned long flags;
2640 uint32_t data_length;
2641 int ret, fcp_task_attr, data_dir, bidi = 0;
2646 spin_lock_irqsave(&ha->hardware_lock, flags);
2647 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
2648 atio->u.isp24.fcp_hdr.s_id);
2650 if (unlikely(sess->tearing_down)) {
2652 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2656 * Do the extra kref_get() before dropping
2657 * qla_hw_data->hardware_lock.
2659 kref_get(&sess->se_sess->sess_kref);
2662 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2664 if (unlikely(!sess)) {
2665 uint8_t *s_id = atio->u.isp24.fcp_hdr.s_id;
2667 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
2668 "qla_target(%d): Unable to find wwn login"
2669 " (s_id %x:%x:%x), trying to create it manually\n",
2670 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
2672 if (atio->u.raw.entry_count > 1) {
2673 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
2674 "Dropping multy entry cmd %p\n", cmd);
2678 mutex_lock(&ha->tgt.tgt_mutex);
2679 sess = qlt_make_local_sess(vha, s_id);
2680 /* sess has an extra creation ref. */
2681 mutex_unlock(&ha->tgt.tgt_mutex);
2688 cmd->loop_id = sess->loop_id;
2689 cmd->conf_compl_supported = sess->conf_compl_supported;
2691 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
2692 cmd->tag = atio->u.isp24.exchange_addr;
2693 cmd->unpacked_lun = scsilun_to_int(
2694 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
2696 if (atio->u.isp24.fcp_cmnd.rddata &&
2697 atio->u.isp24.fcp_cmnd.wrdata) {
2699 data_dir = DMA_TO_DEVICE;
2700 } else if (atio->u.isp24.fcp_cmnd.rddata)
2701 data_dir = DMA_FROM_DEVICE;
2702 else if (atio->u.isp24.fcp_cmnd.wrdata)
2703 data_dir = DMA_TO_DEVICE;
2705 data_dir = DMA_NONE;
2707 fcp_task_attr = qlt_get_fcp_task_attr(vha,
2708 atio->u.isp24.fcp_cmnd.task_attr);
2709 data_length = be32_to_cpu(get_unaligned((uint32_t *)
2710 &atio->u.isp24.fcp_cmnd.add_cdb[
2711 atio->u.isp24.fcp_cmnd.add_cdb_len]));
2713 ql_dbg(ql_dbg_tgt, vha, 0xe022,
2714 "qla_target: START qla command: %p lun: 0x%04x (tag %d)\n",
2715 cmd, cmd->unpacked_lun, cmd->tag);
2717 ret = vha->hw->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
2718 fcp_task_attr, data_dir, bidi);
2722 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
2724 ha->tgt.tgt_ops->put_sess(sess);
2728 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
2730 * cmd has not sent to target yet, so pass NULL as the second argument
2732 spin_lock_irqsave(&ha->hardware_lock, flags);
2733 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
2734 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2736 ha->tgt.tgt_ops->put_sess(sess);
2739 /* ha->hardware_lock supposed to be held on entry */
2740 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
2741 struct atio_from_isp *atio)
2743 struct qla_hw_data *ha = vha->hw;
2744 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2745 struct qla_tgt_cmd *cmd;
2747 if (unlikely(tgt->tgt_stop)) {
2748 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
2749 "New command while device %p is shutting down\n", tgt);
2753 cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC);
2755 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
2756 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
2760 INIT_LIST_HEAD(&cmd->cmd_list);
2762 memcpy(&cmd->atio, atio, sizeof(*atio));
2763 cmd->state = QLA_TGT_STATE_NEW;
2764 cmd->tgt = ha->tgt.qla_tgt;
2767 INIT_WORK(&cmd->work, qlt_do_work);
2768 queue_work(qla_tgt_wq, &cmd->work);
2773 /* ha->hardware_lock supposed to be held on entry */
2774 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
2775 int fn, void *iocb, int flags)
2777 struct scsi_qla_host *vha = sess->vha;
2778 struct qla_hw_data *ha = vha->hw;
2779 struct qla_tgt_mgmt_cmd *mcmd;
2783 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2785 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
2786 "qla_target(%d): Allocation of management "
2787 "command failed, some commands and their data could "
2788 "leak\n", vha->vp_idx);
2791 memset(mcmd, 0, sizeof(*mcmd));
2795 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
2796 sizeof(mcmd->orig_iocb.imm_ntfy));
2798 mcmd->tmr_func = fn;
2799 mcmd->flags = flags;
2802 case QLA_TGT_CLEAR_ACA:
2803 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
2804 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
2805 tmr_func = TMR_CLEAR_ACA;
2808 case QLA_TGT_TARGET_RESET:
2809 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
2810 "qla_target(%d): TARGET_RESET received\n",
2812 tmr_func = TMR_TARGET_WARM_RESET;
2815 case QLA_TGT_LUN_RESET:
2816 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
2817 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
2818 tmr_func = TMR_LUN_RESET;
2821 case QLA_TGT_CLEAR_TS:
2822 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
2823 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
2824 tmr_func = TMR_CLEAR_TASK_SET;
2827 case QLA_TGT_ABORT_TS:
2828 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
2829 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
2830 tmr_func = TMR_ABORT_TASK_SET;
2833 case QLA_TGT_ABORT_ALL:
2834 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
2835 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
2840 case QLA_TGT_ABORT_ALL_SESS:
2841 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
2842 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
2847 case QLA_TGT_NEXUS_LOSS_SESS:
2848 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
2849 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
2854 case QLA_TGT_NEXUS_LOSS:
2855 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
2856 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
2861 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
2862 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
2863 sess->vha->vp_idx, fn);
2864 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2868 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
2870 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
2871 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
2872 sess->vha->vp_idx, res);
2873 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2880 /* ha->hardware_lock supposed to be held on entry */
2881 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
2883 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2884 struct qla_hw_data *ha = vha->hw;
2885 struct qla_tgt *tgt;
2886 struct qla_tgt_sess *sess;
2887 uint32_t lun, unpacked_lun;
2890 tgt = ha->tgt.qla_tgt;
2892 lun = a->u.isp24.fcp_cmnd.lun;
2893 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
2894 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
2895 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
2896 a->u.isp24.fcp_hdr.s_id);
2897 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
2900 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
2901 "qla_target(%d): task mgmt fn 0x%x for "
2902 "non-existant session\n", vha->vp_idx, fn);
2903 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
2904 sizeof(struct atio_from_isp));
2907 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
2910 /* ha->hardware_lock supposed to be held on entry */
2911 static int __qlt_abort_task(struct scsi_qla_host *vha,
2912 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
2914 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2915 struct qla_hw_data *ha = vha->hw;
2916 struct qla_tgt_mgmt_cmd *mcmd;
2917 uint32_t lun, unpacked_lun;
2920 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2922 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
2923 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
2924 vha->vp_idx, __func__);
2927 memset(mcmd, 0, sizeof(*mcmd));
2930 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
2931 sizeof(mcmd->orig_iocb.imm_ntfy));
2933 lun = a->u.isp24.fcp_cmnd.lun;
2934 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
2936 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
2937 le16_to_cpu(iocb->u.isp2x.seq_id));
2939 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
2940 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2942 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2949 /* ha->hardware_lock supposed to be held on entry */
2950 static int qlt_abort_task(struct scsi_qla_host *vha,
2951 struct imm_ntfy_from_isp *iocb)
2953 struct qla_hw_data *ha = vha->hw;
2954 struct qla_tgt_sess *sess;
2957 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
2959 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
2961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
2962 "qla_target(%d): task abort for unexisting "
2963 "session\n", vha->vp_idx);
2964 return qlt_sched_sess_work(ha->tgt.qla_tgt,
2965 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
2968 return __qlt_abort_task(vha, iocb, sess);
2972 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2974 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
2975 struct imm_ntfy_from_isp *iocb)
2977 struct qla_hw_data *ha = vha->hw;
2980 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
2981 "qla_target(%d): Port ID: 0x%02x:%02x:%02x"
2982 " ELS opcode: 0x%02x\n", vha->vp_idx, iocb->u.isp24.port_id[0],
2983 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[2],
2984 iocb->u.isp24.status_subcode);
2986 switch (iocb->u.isp24.status_subcode) {
2992 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
2997 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2998 if (tgt->link_reinit_iocb_pending) {
2999 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3001 tgt->link_reinit_iocb_pending = 0;
3003 res = 1; /* send notify ack */
3008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
3009 "qla_target(%d): Unsupported ELS command %x "
3010 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
3011 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3018 static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
3020 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
3021 size_t first_offset = 0, rem_offset = offset, tmp = 0;
3022 int i, sg_srr_cnt, bufflen = 0;
3024 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
3025 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
3026 "cmd->sg_cnt: %u, direction: %d\n",
3027 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
3030 * FIXME: Reject non zero SRR relative offset until we can test
3031 * this code properly.
3033 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
3036 if (!cmd->sg || !cmd->sg_cnt) {
3037 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
3038 "Missing cmd->sg or zero cmd->sg_cnt in"
3039 " qla_tgt_set_data_offset\n");
3043 * Walk the current cmd->sg list until we locate the new sg_srr_start
3045 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
3046 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
3047 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
3048 i, sg, sg_page(sg), sg->length, sg->offset);
3050 if ((sg->length + tmp) > offset) {
3051 first_offset = rem_offset;
3053 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
3054 "Found matching sg[%d], using %p as sg_srr_start, "
3055 "and using first_offset: %zu\n", i, sg,
3060 rem_offset -= sg->length;
3063 if (!sg_srr_start) {
3064 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
3065 "Unable to locate sg_srr_start for offset: %u\n", offset);
3068 sg_srr_cnt = (cmd->sg_cnt - i);
3070 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
3072 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
3073 "Unable to allocate sgp\n");
3076 sg_init_table(sg_srr, sg_srr_cnt);
3079 * Walk the remaining list for sg_srr_start, mapping to the newly
3080 * allocated sg_srr taking first_offset into account.
3082 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
3084 sg_set_page(sgp, sg_page(sg),
3085 (sg->length - first_offset), first_offset);
3088 sg_set_page(sgp, sg_page(sg), sg->length, 0);
3090 bufflen += sgp->length;
3098 cmd->sg_cnt = sg_srr_cnt;
3099 cmd->bufflen = bufflen;
3100 cmd->offset += offset;
3103 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
3104 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
3106 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
3108 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
3111 if (cmd->sg_cnt < 0)
3114 if (cmd->bufflen < 0)
3120 static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
3121 uint32_t srr_rel_offs, int *xmit_type)
3123 int res = 0, rel_offs;
3125 rel_offs = srr_rel_offs - cmd->offset;
3126 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
3127 srr_rel_offs, rel_offs);
3129 *xmit_type = QLA_TGT_XMIT_ALL;
3132 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
3133 "qla_target(%d): SRR rel_offs (%d) < 0",
3134 cmd->vha->vp_idx, rel_offs);
3136 } else if (rel_offs == cmd->bufflen)
3137 *xmit_type = QLA_TGT_XMIT_STATUS;
3138 else if (rel_offs > 0)
3139 res = qlt_set_data_offset(cmd, rel_offs);
3144 /* No locks, thread context */
3145 static void qlt_handle_srr(struct scsi_qla_host *vha,
3146 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
3148 struct imm_ntfy_from_isp *ntfy =
3149 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
3150 struct qla_hw_data *ha = vha->hw;
3151 struct qla_tgt_cmd *cmd = sctio->cmd;
3152 struct se_cmd *se_cmd = &cmd->se_cmd;
3153 unsigned long flags;
3154 int xmit_type = 0, resp = 0;
3158 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
3159 srr_ui = ntfy->u.isp24.srr_ui;
3161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3166 spin_lock_irqsave(&ha->hardware_lock, flags);
3167 qlt_send_notify_ack(vha, ntfy,
3168 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3169 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3170 xmit_type = QLA_TGT_XMIT_STATUS;
3173 case SRR_IU_DATA_IN:
3174 if (!cmd->sg || !cmd->sg_cnt) {
3175 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3176 "Unable to process SRR_IU_DATA_IN due to"
3177 " missing cmd->sg, state: %d\n", cmd->state);
3181 if (se_cmd->scsi_status != 0) {
3182 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3183 "Rejecting SRR_IU_DATA_IN with non GOOD "
3187 cmd->bufflen = se_cmd->data_length;
3189 if (qlt_has_data(cmd)) {
3190 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3192 spin_lock_irqsave(&ha->hardware_lock, flags);
3193 qlt_send_notify_ack(vha, ntfy,
3194 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3195 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3198 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3199 "qla_target(%d): SRR for in data for cmd "
3200 "without them (tag %d, SCSI status %d), "
3201 "reject", vha->vp_idx, cmd->tag,
3202 cmd->se_cmd.scsi_status);
3206 case SRR_IU_DATA_OUT:
3207 if (!cmd->sg || !cmd->sg_cnt) {
3208 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3209 "Unable to process SRR_IU_DATA_OUT due to"
3210 " missing cmd->sg\n");
3214 if (se_cmd->scsi_status != 0) {
3215 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3216 "Rejecting SRR_IU_DATA_OUT"
3217 " with non GOOD scsi_status\n");
3220 cmd->bufflen = se_cmd->data_length;
3222 if (qlt_has_data(cmd)) {
3223 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3225 spin_lock_irqsave(&ha->hardware_lock, flags);
3226 qlt_send_notify_ack(vha, ntfy,
3227 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3228 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3229 if (xmit_type & QLA_TGT_XMIT_DATA)
3230 qlt_rdy_to_xfer(cmd);
3232 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3233 "qla_target(%d): SRR for out data for cmd "
3234 "without them (tag %d, SCSI status %d), "
3235 "reject", vha->vp_idx, cmd->tag,
3236 cmd->se_cmd.scsi_status);
3241 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3242 "qla_target(%d): Unknown srr_ui value %x",
3243 vha->vp_idx, srr_ui);
3247 /* Transmit response in case of status and data-in cases */
3249 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3254 spin_lock_irqsave(&ha->hardware_lock, flags);
3255 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3256 NOTIFY_ACK_SRR_FLAGS_REJECT,
3257 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3258 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3259 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3260 cmd->state = QLA_TGT_STATE_DATA_IN;
3263 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3264 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3267 static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3268 struct qla_tgt_srr_imm *imm, int ha_locked)
3270 struct qla_hw_data *ha = vha->hw;
3271 unsigned long flags = 0;
3274 spin_lock_irqsave(&ha->hardware_lock, flags);
3276 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3277 NOTIFY_ACK_SRR_FLAGS_REJECT,
3278 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3279 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3282 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3287 static void qlt_handle_srr_work(struct work_struct *work)
3289 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3290 struct scsi_qla_host *vha = tgt->vha;
3291 struct qla_tgt_srr_ctio *sctio;
3292 unsigned long flags;
3294 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3298 spin_lock_irqsave(&tgt->srr_lock, flags);
3299 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3300 struct qla_tgt_srr_imm *imm, *i, *ti;
3301 struct qla_tgt_cmd *cmd;
3302 struct se_cmd *se_cmd;
3305 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3307 if (i->srr_id == sctio->srr_id) {
3308 list_del(&i->srr_list_entry);
3310 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3311 "qla_target(%d): There must be "
3312 "only one IMM SRR per CTIO SRR "
3313 "(IMM SRR %p, id %d, CTIO %p\n",
3314 vha->vp_idx, i, i->srr_id, sctio);
3315 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3321 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3322 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3326 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3327 "Not found matching IMM for SRR CTIO (id %d)\n",
3331 list_del(&sctio->srr_list_entry);
3333 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3337 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3338 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3347 se_cmd = &cmd->se_cmd;
3349 cmd->sg_cnt = se_cmd->t_data_nents;
3350 cmd->sg = se_cmd->t_data_sg;
3352 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3353 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3354 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
3355 se_cmd->t_task_cdb[0], cmd->sg_cnt, cmd->offset);
3357 qlt_handle_srr(vha, sctio, imm);
3363 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3366 /* ha->hardware_lock supposed to be held on entry */
3367 static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3368 struct imm_ntfy_from_isp *iocb)
3370 struct qla_tgt_srr_imm *imm;
3371 struct qla_hw_data *ha = vha->hw;
3372 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3373 struct qla_tgt_srr_ctio *sctio;
3377 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
3380 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
3382 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
3384 /* IRQ is already OFF */
3385 spin_lock(&tgt->srr_lock);
3386 imm->srr_id = tgt->imm_srr_id;
3387 list_add_tail(&imm->srr_list_entry,
3388 &tgt->srr_imm_list);
3389 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
3390 "IMM NTFY SRR %p added (id %d, ui %x)\n",
3391 imm, imm->srr_id, iocb->u.isp24.srr_ui);
3392 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3394 list_for_each_entry(sctio, &tgt->srr_ctio_list,
3396 if (sctio->srr_id == imm->srr_id) {
3402 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
3403 "Scheduling srr work\n");
3404 schedule_work(&tgt->srr_work);
3406 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
3407 "qla_target(%d): imm_srr_id "
3408 "== ctio_srr_id (%d), but there is no "
3409 "corresponding SRR CTIO, deleting IMM "
3410 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
3412 list_del(&imm->srr_list_entry);
3416 spin_unlock(&tgt->srr_lock);
3420 spin_unlock(&tgt->srr_lock);
3422 struct qla_tgt_srr_ctio *ts;
3424 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
3425 "qla_target(%d): Unable to allocate SRR IMM "
3426 "entry, SRR request will be rejected\n", vha->vp_idx);
3428 /* IRQ is already OFF */
3429 spin_lock(&tgt->srr_lock);
3430 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
3432 if (sctio->srr_id == tgt->imm_srr_id) {
3433 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
3434 "CTIO SRR %p deleted (id %d)\n",
3435 sctio, sctio->srr_id);
3436 list_del(&sctio->srr_list_entry);
3437 qlt_send_term_exchange(vha, sctio->cmd,
3438 &sctio->cmd->atio, 1);
3442 spin_unlock(&tgt->srr_lock);
3449 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
3450 NOTIFY_ACK_SRR_FLAGS_REJECT,
3451 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3452 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3456 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3458 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
3459 struct imm_ntfy_from_isp *iocb)
3461 struct qla_hw_data *ha = vha->hw;
3462 uint32_t add_flags = 0;
3463 int send_notify_ack = 1;
3466 status = le16_to_cpu(iocb->u.isp2x.status);
3468 case IMM_NTFY_LIP_RESET:
3470 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
3471 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
3472 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
3473 iocb->u.isp24.status_subcode);
3475 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3476 send_notify_ack = 0;
3480 case IMM_NTFY_LIP_LINK_REINIT:
3482 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3483 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
3484 "qla_target(%d): LINK REINIT (loop %#x, "
3485 "subcode %x)\n", vha->vp_idx,
3486 le16_to_cpu(iocb->u.isp24.nport_handle),
3487 iocb->u.isp24.status_subcode);
3488 if (tgt->link_reinit_iocb_pending) {
3489 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3492 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
3493 tgt->link_reinit_iocb_pending = 1;
3495 * QLogic requires to wait after LINK REINIT for possible
3496 * PDISC or ADISC ELS commands
3498 send_notify_ack = 0;
3502 case IMM_NTFY_PORT_LOGOUT:
3503 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
3504 "qla_target(%d): Port logout (loop "
3505 "%#x, subcode %x)\n", vha->vp_idx,
3506 le16_to_cpu(iocb->u.isp24.nport_handle),
3507 iocb->u.isp24.status_subcode);
3509 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
3510 send_notify_ack = 0;
3511 /* The sessions will be cleared in the callback, if needed */
3514 case IMM_NTFY_GLBL_TPRLO:
3515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
3516 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
3517 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3518 send_notify_ack = 0;
3519 /* The sessions will be cleared in the callback, if needed */
3522 case IMM_NTFY_PORT_CONFIG:
3523 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
3524 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
3526 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3527 send_notify_ack = 0;
3528 /* The sessions will be cleared in the callback, if needed */
3531 case IMM_NTFY_GLBL_LOGO:
3532 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
3533 "qla_target(%d): Link failure detected\n",
3535 /* I_T nexus loss */
3536 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3537 send_notify_ack = 0;
3540 case IMM_NTFY_IOCB_OVERFLOW:
3541 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
3542 "qla_target(%d): Cannot provide requested "
3543 "capability (IOCB overflowed the immediate notify "
3544 "resource count)\n", vha->vp_idx);
3547 case IMM_NTFY_ABORT_TASK:
3548 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
3549 "qla_target(%d): Abort Task (S %08x I %#x -> "
3550 "L %#x)\n", vha->vp_idx,
3551 le16_to_cpu(iocb->u.isp2x.seq_id),
3552 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
3553 le16_to_cpu(iocb->u.isp2x.lun));
3554 if (qlt_abort_task(vha, iocb) == 0)
3555 send_notify_ack = 0;
3558 case IMM_NTFY_RESOURCE:
3559 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
3560 "qla_target(%d): Out of resources, host %ld\n",
3561 vha->vp_idx, vha->host_no);
3564 case IMM_NTFY_MSG_RX:
3565 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
3566 "qla_target(%d): Immediate notify task %x\n",
3567 vha->vp_idx, iocb->u.isp2x.task_flags);
3568 if (qlt_handle_task_mgmt(vha, iocb) == 0)
3569 send_notify_ack = 0;
3573 if (qlt_24xx_handle_els(vha, iocb) == 0)
3574 send_notify_ack = 0;
3578 qlt_prepare_srr_imm(vha, iocb);
3579 send_notify_ack = 0;
3583 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
3584 "qla_target(%d): Received unknown immediate "
3585 "notify status %x\n", vha->vp_idx, status);
3589 if (send_notify_ack)
3590 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
3594 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3595 * This function sends busy to ISP 2xxx or 24xx.
3597 static void qlt_send_busy(struct scsi_qla_host *vha,
3598 struct atio_from_isp *atio, uint16_t status)
3600 struct ctio7_to_24xx *ctio24;
3601 struct qla_hw_data *ha = vha->hw;
3603 struct qla_tgt_sess *sess = NULL;
3605 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3606 atio->u.isp24.fcp_hdr.s_id);
3608 qlt_send_term_exchange(vha, NULL, atio, 1);
3611 /* Sending marker isn't necessary, since we called from ISR */
3613 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3615 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
3616 "qla_target(%d): %s failed: unable to allocate "
3617 "request packet", vha->vp_idx, __func__);
3621 pkt->entry_count = 1;
3622 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3624 ctio24 = (struct ctio7_to_24xx *)pkt;
3625 ctio24->entry_type = CTIO_TYPE7;
3626 ctio24->nport_handle = sess->loop_id;
3627 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
3628 ctio24->vp_index = vha->vp_idx;
3629 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3630 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3631 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3632 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3633 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
3634 __constant_cpu_to_le16(
3635 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
3636 CTIO7_FLAGS_DONT_RET_CTIO);
3638 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
3639 * if the explicit conformation is used.
3641 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
3642 ctio24->u.status1.scsi_status = cpu_to_le16(status);
3643 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3644 &atio->u.isp24.fcp_cmnd.add_cdb[
3645 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3646 if (ctio24->u.status1.residual != 0)
3647 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3649 qla2x00_start_iocbs(vha, vha->req);
3652 /* ha->hardware_lock supposed to be held on entry */
3653 /* called via callback from qla2xxx */
3654 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
3655 struct atio_from_isp *atio)
3657 struct qla_hw_data *ha = vha->hw;
3658 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3661 if (unlikely(tgt == NULL)) {
3662 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
3663 "ATIO pkt, but no tgt (ha %p)", ha);
3666 ql_dbg(ql_dbg_tgt, vha, 0xe02c,
3667 "qla_target(%d): ATIO pkt %p: type %02x count %02x",
3668 vha->vp_idx, atio, atio->u.raw.entry_type,
3669 atio->u.raw.entry_count);
3671 * In tgt_stop mode we also should allow all requests to pass.
3672 * Otherwise, some commands can stuck.
3675 tgt->irq_cmd_count++;
3677 switch (atio->u.raw.entry_type) {
3679 ql_dbg(ql_dbg_tgt, vha, 0xe02d,
3680 "ATIO_TYPE7 instance %d, lun %Lx, read/write %d/%d, "
3681 "add_cdb_len %d, data_length %04x, s_id %x:%x:%x\n",
3682 vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
3683 atio->u.isp24.fcp_cmnd.rddata,
3684 atio->u.isp24.fcp_cmnd.wrdata,
3685 atio->u.isp24.fcp_cmnd.add_cdb_len,
3686 be32_to_cpu(get_unaligned((uint32_t *)
3687 &atio->u.isp24.fcp_cmnd.add_cdb[
3688 atio->u.isp24.fcp_cmnd.add_cdb_len])),
3689 atio->u.isp24.fcp_hdr.s_id[0],
3690 atio->u.isp24.fcp_hdr.s_id[1],
3691 atio->u.isp24.fcp_hdr.s_id[2]);
3693 if (unlikely(atio->u.isp24.exchange_addr ==
3694 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
3695 ql_dbg(ql_dbg_tgt, vha, 0xe058,
3696 "qla_target(%d): ATIO_TYPE7 "
3697 "received with UNKNOWN exchange address, "
3698 "sending QUEUE_FULL\n", vha->vp_idx);
3699 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
3702 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
3703 rc = qlt_handle_cmd_for_atio(vha, atio);
3705 rc = qlt_handle_task_mgmt(vha, atio);
3706 if (unlikely(rc != 0)) {
3708 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
3709 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
3711 qlt_send_term_exchange(vha, NULL, atio, 1);
3714 if (tgt->tgt_stop) {
3715 ql_dbg(ql_dbg_tgt, vha, 0xe059,
3716 "qla_target: Unable to send "
3717 "command to target for req, "
3720 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
3721 "qla_target(%d): Unable to send "
3722 "command to target, sending BUSY "
3723 "status.\n", vha->vp_idx);
3724 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
3730 case IMMED_NOTIFY_TYPE:
3732 if (unlikely(atio->u.isp2x.entry_status != 0)) {
3733 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
3734 "qla_target(%d): Received ATIO packet %x "
3735 "with error status %x\n", vha->vp_idx,
3736 atio->u.raw.entry_type,
3737 atio->u.isp2x.entry_status);
3740 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
3741 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
3746 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
3747 "qla_target(%d): Received unknown ATIO atio "
3748 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
3752 tgt->irq_cmd_count--;
3755 /* ha->hardware_lock supposed to be held on entry */
3756 /* called via callback from qla2xxx */
3757 static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
3759 struct qla_hw_data *ha = vha->hw;
3760 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3762 if (unlikely(tgt == NULL)) {
3763 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
3764 "qla_target(%d): Response pkt %x received, but no "
3765 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
3769 ql_dbg(ql_dbg_tgt, vha, 0xe02f,
3770 "qla_target(%d): response pkt %p: T %02x C %02x S %02x "
3771 "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
3772 pkt->entry_count, pkt->entry_status, pkt->handle);
3775 * In tgt_stop mode we also should allow all requests to pass.
3776 * Otherwise, some commands can stuck.
3779 tgt->irq_cmd_count++;
3781 switch (pkt->entry_type) {
3784 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
3785 ql_dbg(ql_dbg_tgt, vha, 0xe030, "CTIO_TYPE7: instance %d\n",
3787 qlt_do_ctio_completion(vha, entry->handle,
3788 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
3793 case ACCEPT_TGT_IO_TYPE:
3795 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
3797 ql_dbg(ql_dbg_tgt, vha, 0xe031,
3798 "ACCEPT_TGT_IO instance %d status %04x "
3799 "lun %04x read/write %d data_length %04x "
3800 "target_id %02x rx_id %04x\n ", vha->vp_idx,
3801 le16_to_cpu(atio->u.isp2x.status),
3802 le16_to_cpu(atio->u.isp2x.lun),
3803 atio->u.isp2x.execution_codes,
3804 le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
3805 atio), atio->u.isp2x.rx_id);
3806 if (atio->u.isp2x.status !=
3807 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
3808 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
3809 "qla_target(%d): ATIO with error "
3810 "status %x received\n", vha->vp_idx,
3811 le16_to_cpu(atio->u.isp2x.status));
3814 ql_dbg(ql_dbg_tgt, vha, 0xe032,
3815 "FCP CDB: 0x%02x, sizeof(cdb): %lu",
3816 atio->u.isp2x.cdb[0], (unsigned long
3817 int)sizeof(atio->u.isp2x.cdb));
3819 rc = qlt_handle_cmd_for_atio(vha, atio);
3820 if (unlikely(rc != 0)) {
3822 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
3823 qlt_send_busy(vha, atio, 0);
3825 qlt_send_term_exchange(vha, NULL, atio, 1);
3828 if (tgt->tgt_stop) {
3829 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
3830 "qla_target: Unable to send "
3831 "command to target, sending TERM "
3832 "EXCHANGE for rsp\n");
3833 qlt_send_term_exchange(vha, NULL,
3836 ql_dbg(ql_dbg_tgt, vha, 0xe060,
3837 "qla_target(%d): Unable to send "
3838 "command to target, sending BUSY "
3839 "status\n", vha->vp_idx);
3840 qlt_send_busy(vha, atio, 0);
3847 case CONTINUE_TGT_IO_TYPE:
3849 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
3850 ql_dbg(ql_dbg_tgt, vha, 0xe033,
3851 "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
3852 qlt_do_ctio_completion(vha, entry->handle,
3853 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
3860 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
3861 ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
3863 qlt_do_ctio_completion(vha, entry->handle,
3864 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
3869 case IMMED_NOTIFY_TYPE:
3870 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
3871 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
3874 case NOTIFY_ACK_TYPE:
3875 if (tgt->notify_ack_expected > 0) {
3876 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
3877 ql_dbg(ql_dbg_tgt, vha, 0xe036,
3878 "NOTIFY_ACK seq %08x status %x\n",
3879 le16_to_cpu(entry->u.isp2x.seq_id),
3880 le16_to_cpu(entry->u.isp2x.status));
3881 tgt->notify_ack_expected--;
3882 if (entry->u.isp2x.status !=
3883 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
3884 ql_dbg(ql_dbg_tgt, vha, 0xe061,
3885 "qla_target(%d): NOTIFY_ACK "
3886 "failed %x\n", vha->vp_idx,
3887 le16_to_cpu(entry->u.isp2x.status));
3890 ql_dbg(ql_dbg_tgt, vha, 0xe062,
3891 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
3896 case ABTS_RECV_24XX:
3897 ql_dbg(ql_dbg_tgt, vha, 0xe037,
3898 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
3899 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
3902 case ABTS_RESP_24XX:
3903 if (tgt->abts_resp_expected > 0) {
3904 struct abts_resp_from_24xx_fw *entry =
3905 (struct abts_resp_from_24xx_fw *)pkt;
3906 ql_dbg(ql_dbg_tgt, vha, 0xe038,
3907 "ABTS_RESP_24XX: compl_status %x\n",
3908 entry->compl_status);
3909 tgt->abts_resp_expected--;
3910 if (le16_to_cpu(entry->compl_status) !=
3911 ABTS_RESP_COMPL_SUCCESS) {
3912 if ((entry->error_subcode1 == 0x1E) &&
3913 (entry->error_subcode2 == 0)) {
3915 * We've got a race here: aborted
3916 * exchange not terminated, i.e.
3917 * response for the aborted command was
3918 * sent between the abort request was
3919 * received and processed.
3920 * Unfortunately, the firmware has a
3921 * silly requirement that all aborted
3922 * exchanges must be explicitely
3923 * terminated, otherwise it refuses to
3924 * send responses for the abort
3925 * requests. So, we have to
3926 * (re)terminate the exchange and retry
3927 * the abort response.
3929 qlt_24xx_retry_term_exchange(vha,
3932 ql_dbg(ql_dbg_tgt, vha, 0xe063,
3933 "qla_target(%d): ABTS_RESP_24XX "
3934 "failed %x (subcode %x:%x)",
3935 vha->vp_idx, entry->compl_status,
3936 entry->error_subcode1,
3937 entry->error_subcode2);
3940 ql_dbg(ql_dbg_tgt, vha, 0xe064,
3941 "qla_target(%d): Unexpected ABTS_RESP_24XX "
3942 "received\n", vha->vp_idx);
3947 ql_dbg(ql_dbg_tgt, vha, 0xe065,
3948 "qla_target(%d): Received unknown response pkt "
3949 "type %x\n", vha->vp_idx, pkt->entry_type);
3953 tgt->irq_cmd_count--;
3957 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3959 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
3962 struct qla_hw_data *ha = vha->hw;
3963 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3966 ql_dbg(ql_dbg_tgt, vha, 0xe039,
3967 "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
3968 vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
3969 ha->operating_mode, ha->current_topology);
3971 if (!ha->tgt.tgt_ops)
3974 if (unlikely(tgt == NULL)) {
3975 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
3976 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
3980 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
3984 * In tgt_stop mode we also should allow all requests to pass.
3985 * Otherwise, some commands can stuck.
3988 tgt->irq_cmd_count++;
3991 case MBA_RESET: /* Reset */
3992 case MBA_SYSTEM_ERR: /* System Error */
3993 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
3994 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
3995 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
3996 "qla_target(%d): System error async event %#x "
3997 "occured", vha->vp_idx, code);
3999 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
4000 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4005 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
4006 "qla_target(%d): Async LOOP_UP occured "
4007 "(m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx,
4008 le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
4009 le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
4010 if (tgt->link_reinit_iocb_pending) {
4011 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
4013 tgt->link_reinit_iocb_pending = 0;
4018 case MBA_LIP_OCCURRED:
4021 case MBA_RSCN_UPDATE:
4022 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
4023 "qla_target(%d): Async event %#x occured "
4024 "(m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx, code,
4025 le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
4026 le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
4029 case MBA_PORT_UPDATE:
4030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
4031 "qla_target(%d): Port update async event %#x "
4032 "occured: updating the ports database (m[1]=%x, m[2]=%x, "
4033 "m[3]=%x, m[4]=%x)", vha->vp_idx, code,
4034 le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
4035 le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
4036 reason_code = le16_to_cpu(mailbox[2]);
4037 if (reason_code == 0x4)
4038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
4039 "Async MB 2: Got PLOGI Complete\n");
4040 else if (reason_code == 0x7)
4041 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
4042 "Async MB 2: Port Logged Out\n");
4046 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
4047 "qla_target(%d): Async event %#x occured: "
4048 "ignore (m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx,
4049 code, le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
4050 le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
4054 tgt->irq_cmd_count--;
4057 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
4063 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
4065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
4066 "qla_target(%d): Allocation of tmp FC port failed",
4071 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
4073 fcport->loop_id = loop_id;
4075 rc = qla2x00_get_port_database(vha, fcport, 0);
4076 if (rc != QLA_SUCCESS) {
4077 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
4078 "qla_target(%d): Failed to retrieve fcport "
4079 "information -- get_port_database() returned %x "
4080 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
4088 /* Must be called under tgt_mutex */
4089 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
4092 struct qla_hw_data *ha = vha->hw;
4093 struct qla_tgt_sess *sess = NULL;
4094 fc_port_t *fcport = NULL;
4095 int rc, global_resets;
4096 uint16_t loop_id = 0;
4099 global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count);
4101 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
4103 if ((s_id[0] == 0xFF) &&
4104 (s_id[1] == 0xFC)) {
4106 * This is Domain Controller, so it should be
4107 * OK to drop SCSI commands from it.
4109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
4110 "Unable to find initiator with S_ID %x:%x:%x",
4111 s_id[0], s_id[1], s_id[2]);
4113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
4114 "qla_target(%d): Unable to find "
4115 "initiator with S_ID %x:%x:%x",
4116 vha->vp_idx, s_id[0], s_id[1],
4121 fcport = qlt_get_port_database(vha, loop_id);
4125 if (global_resets !=
4126 atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) {
4127 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
4128 "qla_target(%d): global reset during session discovery "
4129 "(counter was %d, new %d), retrying", vha->vp_idx,
4131 atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count));
4135 sess = qlt_create_sess(vha, fcport, true);
4141 static void qlt_abort_work(struct qla_tgt *tgt,
4142 struct qla_tgt_sess_work_param *prm)
4144 struct scsi_qla_host *vha = tgt->vha;
4145 struct qla_hw_data *ha = vha->hw;
4146 struct qla_tgt_sess *sess = NULL;
4147 unsigned long flags;
4152 spin_lock_irqsave(&ha->hardware_lock, flags);
4157 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
4158 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
4159 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
4161 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4162 (unsigned char *)&be_s_id);
4164 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4166 mutex_lock(&ha->tgt.tgt_mutex);
4167 sess = qlt_make_local_sess(vha, s_id);
4168 /* sess has got an extra creation ref */
4169 mutex_unlock(&ha->tgt.tgt_mutex);
4171 spin_lock_irqsave(&ha->hardware_lock, flags);
4175 kref_get(&sess->se_sess->sess_kref);
4181 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4184 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4186 ha->tgt.tgt_ops->put_sess(sess);
4190 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
4191 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4193 ha->tgt.tgt_ops->put_sess(sess);
4196 static void qlt_tmr_work(struct qla_tgt *tgt,
4197 struct qla_tgt_sess_work_param *prm)
4199 struct atio_from_isp *a = &prm->tm_iocb2;
4200 struct scsi_qla_host *vha = tgt->vha;
4201 struct qla_hw_data *ha = vha->hw;
4202 struct qla_tgt_sess *sess = NULL;
4203 unsigned long flags;
4204 uint8_t *s_id = NULL; /* to hide compiler warnings */
4206 uint32_t lun, unpacked_lun;
4210 spin_lock_irqsave(&ha->hardware_lock, flags);
4215 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4216 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4218 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4220 mutex_lock(&ha->tgt.tgt_mutex);
4221 sess = qlt_make_local_sess(vha, s_id);
4222 /* sess has got an extra creation ref */
4223 mutex_unlock(&ha->tgt.tgt_mutex);
4225 spin_lock_irqsave(&ha->hardware_lock, flags);
4229 kref_get(&sess->se_sess->sess_kref);
4233 lun = a->u.isp24.fcp_cmnd.lun;
4234 lun_size = sizeof(lun);
4235 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4236 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4238 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4241 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4243 ha->tgt.tgt_ops->put_sess(sess);
4247 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
4248 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4250 ha->tgt.tgt_ops->put_sess(sess);
4253 static void qlt_sess_work_fn(struct work_struct *work)
4255 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4256 struct scsi_qla_host *vha = tgt->vha;
4257 unsigned long flags;
4259 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4261 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4262 while (!list_empty(&tgt->sess_works_list)) {
4263 struct qla_tgt_sess_work_param *prm = list_entry(
4264 tgt->sess_works_list.next, typeof(*prm),
4265 sess_works_list_entry);
4268 * This work can be scheduled on several CPUs at time, so we
4269 * must delete the entry to eliminate double processing
4271 list_del(&prm->sess_works_list_entry);
4273 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4275 switch (prm->type) {
4276 case QLA_TGT_SESS_WORK_ABORT:
4277 qlt_abort_work(tgt, prm);
4279 case QLA_TGT_SESS_WORK_TM:
4280 qlt_tmr_work(tgt, prm);
4287 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4291 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4294 /* Must be called under tgt_host_action_mutex */
4295 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4297 struct qla_tgt *tgt;
4299 if (!QLA_TGT_MODE_ENABLED())
4302 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
4303 "Registering target for host %ld(%p)", base_vha->host_no, ha);
4305 BUG_ON((ha->tgt.qla_tgt != NULL) || (ha->tgt.tgt_ops != NULL));
4307 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4309 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4310 "Unable to allocate struct qla_tgt\n");
4314 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4315 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4318 tgt->vha = base_vha;
4319 init_waitqueue_head(&tgt->waitQ);
4320 INIT_LIST_HEAD(&tgt->sess_list);
4321 INIT_LIST_HEAD(&tgt->del_sess_list);
4322 INIT_DELAYED_WORK(&tgt->sess_del_work,
4323 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4324 spin_lock_init(&tgt->sess_work_lock);
4325 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4326 INIT_LIST_HEAD(&tgt->sess_works_list);
4327 spin_lock_init(&tgt->srr_lock);
4328 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4329 INIT_LIST_HEAD(&tgt->srr_imm_list);
4330 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4331 atomic_set(&tgt->tgt_global_resets_count, 0);
4333 ha->tgt.qla_tgt = tgt;
4335 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4336 "qla_target(%d): using 64 Bit PCI addressing",
4338 tgt->tgt_enable_64bit_addr = 1;
4340 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4341 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4342 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4344 mutex_lock(&qla_tgt_mutex);
4345 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4346 mutex_unlock(&qla_tgt_mutex);
4351 /* Must be called under tgt_host_action_mutex */
4352 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4354 if (!ha->tgt.qla_tgt)
4357 mutex_lock(&qla_tgt_mutex);
4358 list_del(&ha->tgt.qla_tgt->tgt_list_entry);
4359 mutex_unlock(&qla_tgt_mutex);
4361 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4363 qlt_release(ha->tgt.qla_tgt);
4368 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4373 pr_debug("qla2xxx HW vha->node_name: ");
4374 for (i = 0; i < WWN_SIZE; i++)
4375 pr_debug("%02x ", vha->node_name[i]);
4377 pr_debug("qla2xxx HW vha->port_name: ");
4378 for (i = 0; i < WWN_SIZE; i++)
4379 pr_debug("%02x ", vha->port_name[i]);
4382 pr_debug("qla2xxx passed configfs WWPN: ");
4383 put_unaligned_be64(wwpn, b);
4384 for (i = 0; i < WWN_SIZE; i++)
4385 pr_debug("%02x ", b[i]);
4390 * qla_tgt_lport_register - register lport with external module
4392 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4393 * @wwpn: Passwd FC target WWPN
4394 * @callback: lport initialization callback for tcm_qla2xxx code
4395 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4397 int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
4398 int (*callback)(struct scsi_qla_host *), void *target_lport_ptr)
4400 struct qla_tgt *tgt;
4401 struct scsi_qla_host *vha;
4402 struct qla_hw_data *ha;
4403 struct Scsi_Host *host;
4404 unsigned long flags;
4408 mutex_lock(&qla_tgt_mutex);
4409 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4417 if (ha->tgt.tgt_ops != NULL)
4420 if (!(host->hostt->supported_mode & MODE_TARGET))
4423 spin_lock_irqsave(&ha->hardware_lock, flags);
4424 if (host->active_mode & MODE_TARGET) {
4425 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4427 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4430 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4432 if (!scsi_host_get(host)) {
4433 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4434 "Unable to scsi_host_get() for"
4435 " qla2xxx scsi_host\n");
4438 qlt_lport_dump(vha, wwpn, b);
4440 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4441 scsi_host_put(host);
4445 * Setup passed parameters ahead of invoking callback
4447 ha->tgt.tgt_ops = qla_tgt_ops;
4448 ha->tgt.target_lport_ptr = target_lport_ptr;
4449 rc = (*callback)(vha);
4451 ha->tgt.tgt_ops = NULL;
4452 ha->tgt.target_lport_ptr = NULL;
4454 mutex_unlock(&qla_tgt_mutex);
4457 mutex_unlock(&qla_tgt_mutex);
4461 EXPORT_SYMBOL(qlt_lport_register);
4464 * qla_tgt_lport_deregister - Degister lport
4466 * @vha: Registered scsi_qla_host pointer
4468 void qlt_lport_deregister(struct scsi_qla_host *vha)
4470 struct qla_hw_data *ha = vha->hw;
4471 struct Scsi_Host *sh = vha->host;
4473 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
4475 ha->tgt.target_lport_ptr = NULL;
4476 ha->tgt.tgt_ops = NULL;
4478 * Release the Scsi_Host reference for the underlying qla2xxx host
4482 EXPORT_SYMBOL(qlt_lport_deregister);
4484 /* Must be called under HW lock */
4485 void qlt_set_mode(struct scsi_qla_host *vha)
4487 struct qla_hw_data *ha = vha->hw;
4489 switch (ql2x_ini_mode) {
4490 case QLA2XXX_INI_MODE_DISABLED:
4491 case QLA2XXX_INI_MODE_EXCLUSIVE:
4492 vha->host->active_mode = MODE_TARGET;
4494 case QLA2XXX_INI_MODE_ENABLED:
4495 vha->host->active_mode |= MODE_TARGET;
4501 if (ha->tgt.ini_mode_force_reverse)
4502 qla_reverse_ini_mode(vha);
4505 /* Must be called under HW lock */
4506 void qlt_clear_mode(struct scsi_qla_host *vha)
4508 struct qla_hw_data *ha = vha->hw;
4510 switch (ql2x_ini_mode) {
4511 case QLA2XXX_INI_MODE_DISABLED:
4512 vha->host->active_mode = MODE_UNKNOWN;
4514 case QLA2XXX_INI_MODE_EXCLUSIVE:
4515 vha->host->active_mode = MODE_INITIATOR;
4517 case QLA2XXX_INI_MODE_ENABLED:
4518 vha->host->active_mode &= ~MODE_TARGET;
4524 if (ha->tgt.ini_mode_force_reverse)
4525 qla_reverse_ini_mode(vha);
4529 * qla_tgt_enable_vha - NO LOCK HELD
4531 * host_reset, bring up w/ Target Mode Enabled
4534 qlt_enable_vha(struct scsi_qla_host *vha)
4536 struct qla_hw_data *ha = vha->hw;
4537 struct qla_tgt *tgt = ha->tgt.qla_tgt;
4538 unsigned long flags;
4541 ql_dbg(ql_dbg_tgt, vha, 0xe069,
4542 "Unable to locate qla_tgt pointer from"
4543 " struct qla_hw_data\n");
4548 spin_lock_irqsave(&ha->hardware_lock, flags);
4549 tgt->tgt_stopped = 0;
4551 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4553 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4554 qla2xxx_wake_dpc(vha);
4555 qla2x00_wait_for_hba_online(vha);
4557 EXPORT_SYMBOL(qlt_enable_vha);
4560 * qla_tgt_disable_vha - NO LOCK HELD
4562 * Disable Target Mode and reset the adapter
4565 qlt_disable_vha(struct scsi_qla_host *vha)
4567 struct qla_hw_data *ha = vha->hw;
4568 struct qla_tgt *tgt = ha->tgt.qla_tgt;
4569 unsigned long flags;
4572 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
4573 "Unable to locate qla_tgt pointer from"
4574 " struct qla_hw_data\n");
4579 spin_lock_irqsave(&ha->hardware_lock, flags);
4580 qlt_clear_mode(vha);
4581 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4583 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4584 qla2xxx_wake_dpc(vha);
4585 qla2x00_wait_for_hba_online(vha);
4589 * Called from qla_init.c:qla24xx_vport_create() contex to setup
4590 * the target mode specific struct scsi_qla_host and struct qla_hw_data
4594 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
4596 if (!qla_tgt_mode_enabled(vha))
4599 mutex_init(&ha->tgt.tgt_mutex);
4600 mutex_init(&ha->tgt.tgt_host_action_mutex);
4602 qlt_clear_mode(vha);
4605 * NOTE: Currently the value is kept the same for <24xx and
4606 * >=24xx ISPs. If it is necessary to change it,
4607 * the check should be added for specific ISPs,
4608 * assigning the value appropriately.
4610 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
4614 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
4617 * FC-4 Feature bit 0 indicates target functionality to the name server.
4619 if (qla_tgt_mode_enabled(vha)) {
4620 if (qla_ini_mode_enabled(vha))
4621 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
4623 ct_req->req.rff_id.fc4_feature = BIT_0;
4624 } else if (qla_ini_mode_enabled(vha)) {
4625 ct_req->req.rff_id.fc4_feature = BIT_1;
4630 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
4633 * Beginning of ATIO ring has initialization control block already built
4634 * by nvram config routine.
4636 * Returns 0 on success.
4639 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
4641 struct qla_hw_data *ha = vha->hw;
4643 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
4645 if (!qla_tgt_mode_enabled(vha))
4648 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
4649 pkt->u.raw.signature = ATIO_PROCESSED;
4656 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
4657 * @ha: SCSI driver HA context
4660 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
4662 struct qla_hw_data *ha = vha->hw;
4663 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
4664 struct atio_from_isp *pkt;
4667 if (!vha->flags.online)
4670 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
4671 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
4672 cnt = pkt->u.raw.entry_count;
4674 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
4676 for (i = 0; i < cnt; i++) {
4677 ha->tgt.atio_ring_index++;
4678 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
4679 ha->tgt.atio_ring_index = 0;
4680 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
4682 ha->tgt.atio_ring_ptr++;
4684 pkt->u.raw.signature = ATIO_PROCESSED;
4685 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
4690 /* Adjust ring index */
4691 WRT_REG_DWORD(®->atio_q_out, ha->tgt.atio_ring_index);
4695 qlt_24xx_config_rings(struct scsi_qla_host *vha, device_reg_t __iomem *reg)
4697 struct qla_hw_data *ha = vha->hw;
4699 /* FIXME: atio_q in/out for ha->mqenable=1..? */
4702 WRT_REG_DWORD(®->isp25mq.atio_q_in, 0);
4703 WRT_REG_DWORD(®->isp25mq.atio_q_out, 0);
4704 RD_REG_DWORD(®->isp25mq.atio_q_out);
4707 /* Setup APTIO registers for target mode */
4708 WRT_REG_DWORD(®->isp24.atio_q_in, 0);
4709 WRT_REG_DWORD(®->isp24.atio_q_out, 0);
4710 RD_REG_DWORD(®->isp24.atio_q_out);
4715 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
4717 struct qla_hw_data *ha = vha->hw;
4719 if (qla_tgt_mode_enabled(vha)) {
4720 if (!ha->tgt.saved_set) {
4721 /* We save only once */
4722 ha->tgt.saved_exchange_count = nv->exchange_count;
4723 ha->tgt.saved_firmware_options_1 =
4724 nv->firmware_options_1;
4725 ha->tgt.saved_firmware_options_2 =
4726 nv->firmware_options_2;
4727 ha->tgt.saved_firmware_options_3 =
4728 nv->firmware_options_3;
4729 ha->tgt.saved_set = 1;
4732 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
4734 /* Enable target mode */
4735 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
4737 /* Disable ini mode, if requested */
4738 if (!qla_ini_mode_enabled(vha))
4739 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
4741 /* Disable Full Login after LIP */
4742 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
4743 /* Enable initial LIP */
4744 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
4745 /* Enable FC tapes support */
4746 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
4747 /* Disable Full Login after LIP */
4748 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
4749 /* Enable target PRLI control */
4750 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
4752 if (ha->tgt.saved_set) {
4753 nv->exchange_count = ha->tgt.saved_exchange_count;
4754 nv->firmware_options_1 =
4755 ha->tgt.saved_firmware_options_1;
4756 nv->firmware_options_2 =
4757 ha->tgt.saved_firmware_options_2;
4758 nv->firmware_options_3 =
4759 ha->tgt.saved_firmware_options_3;
4764 /* out-of-order frames reassembly */
4765 nv->firmware_options_3 |= BIT_6|BIT_9;
4767 if (ha->tgt.enable_class_2) {
4768 if (vha->flags.init_done)
4769 fc_host_supported_classes(vha->host) =
4770 FC_COS_CLASS2 | FC_COS_CLASS3;
4772 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
4774 if (vha->flags.init_done)
4775 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
4777 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
4782 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
4783 struct init_cb_24xx *icb)
4785 struct qla_hw_data *ha = vha->hw;
4787 if (ha->tgt.node_name_set) {
4788 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
4789 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
4794 qlt_24xx_process_response_error(struct scsi_qla_host *vha,
4795 struct sts_entry_24xx *pkt)
4797 switch (pkt->entry_type) {
4798 case ABTS_RECV_24XX:
4799 case ABTS_RESP_24XX:
4801 case NOTIFY_ACK_TYPE:
4809 qlt_modify_vp_config(struct scsi_qla_host *vha,
4810 struct vp_config_entry_24xx *vpmod)
4812 if (qla_tgt_mode_enabled(vha))
4813 vpmod->options_idx1 &= ~BIT_5;
4814 /* Disable ini mode, if requested */
4815 if (!qla_ini_mode_enabled(vha))
4816 vpmod->options_idx1 &= ~BIT_4;
4820 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
4822 if (!QLA_TGT_MODE_ENABLED())
4825 mutex_init(&ha->tgt.tgt_mutex);
4826 mutex_init(&ha->tgt.tgt_host_action_mutex);
4827 qlt_clear_mode(base_vha);
4831 qlt_mem_alloc(struct qla_hw_data *ha)
4833 if (!QLA_TGT_MODE_ENABLED())
4836 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
4837 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
4838 if (!ha->tgt.tgt_vp_map)
4841 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
4842 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
4843 &ha->tgt.atio_dma, GFP_KERNEL);
4844 if (!ha->tgt.atio_ring) {
4845 kfree(ha->tgt.tgt_vp_map);
4852 qlt_mem_free(struct qla_hw_data *ha)
4854 if (!QLA_TGT_MODE_ENABLED())
4857 if (ha->tgt.atio_ring) {
4858 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
4859 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
4862 kfree(ha->tgt.tgt_vp_map);
4865 /* vport_slock to be held by the caller */
4867 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
4869 if (!QLA_TGT_MODE_ENABLED())
4874 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
4877 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
4880 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
4883 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
4888 static int __init qlt_parse_ini_mode(void)
4890 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
4891 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
4892 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
4893 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
4894 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
4895 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
4902 int __init qlt_init(void)
4906 if (!qlt_parse_ini_mode()) {
4907 ql_log(ql_log_fatal, NULL, 0xe06b,
4908 "qlt_parse_ini_mode() failed\n");
4912 if (!QLA_TGT_MODE_ENABLED())
4915 qla_tgt_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep",
4916 sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd), 0,
4918 if (!qla_tgt_cmd_cachep) {
4919 ql_log(ql_log_fatal, NULL, 0xe06c,
4920 "kmem_cache_create for qla_tgt_cmd_cachep failed\n");
4924 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
4925 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
4926 qla_tgt_mgmt_cmd), 0, NULL);
4927 if (!qla_tgt_mgmt_cmd_cachep) {
4928 ql_log(ql_log_fatal, NULL, 0xe06d,
4929 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
4934 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
4935 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
4936 if (!qla_tgt_mgmt_cmd_mempool) {
4937 ql_log(ql_log_fatal, NULL, 0xe06e,
4938 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
4940 goto out_mgmt_cmd_cachep;
4943 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
4945 ql_log(ql_log_fatal, NULL, 0xe06f,
4946 "alloc_workqueue for qla_tgt_wq failed\n");
4948 goto out_cmd_mempool;
4951 * Return 1 to signal that initiator-mode is being disabled
4953 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
4956 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
4957 out_mgmt_cmd_cachep:
4958 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
4960 kmem_cache_destroy(qla_tgt_cmd_cachep);
4966 if (!QLA_TGT_MODE_ENABLED())
4969 destroy_workqueue(qla_tgt_wq);
4970 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
4971 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
4972 kmem_cache_destroy(qla_tgt_cmd_cachep);