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qla2xxx: Fix inadequate lock protection for ABTS.
[linux-2.6-block.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
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.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
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
18 * of the License.
19 *
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.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
d154f350
AE		 45static int ql2xtgt_tape_enable;
46module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
2d70c103
NB		 50static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51module_param(qlini_mode, charp, S_IRUGO);
52MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
ead03855
QT		 58 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
59 "when ready "
2d70c103
NB		 60 "\"enabled\" (default) - initiator mode will always stay enabled.");
61
ead03855
QT		 62static int ql_dm_tgt_ex_pct = 50;
63module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
64MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
65 "For Dual Mode (qlini_mode=dual), this parameter determines "
66 "the percentage of exchanges/cmds FW will allocate resources "
67 "for Target mode.");
68
aa230bc5 69int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103 70
33e79977
QT		 71static int temp_sam_status = SAM_STAT_BUSY;
72
2d70c103
NB		 73/*
74 * From scsi/fc/fc_fcp.h
75 */
76enum fcp_resp_rsp_codes {
77 FCP_TMF_CMPL = 0,
78 FCP_DATA_LEN_INVALID = 1,
79 FCP_CMND_FIELDS_INVALID = 2,
80 FCP_DATA_PARAM_MISMATCH = 3,
81 FCP_TMF_REJECTED = 4,
82 FCP_TMF_FAILED = 5,
83 FCP_TMF_INVALID_LUN = 9,
84};
85
86/*
87 * fc_pri_ta from scsi/fc/fc_fcp.h
88 */
89#define FCP_PTA_SIMPLE 0 /* simple task attribute */
90#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
91#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 92#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 93#define FCP_PTA_MASK 7 /* mask for task attribute field */
94#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
95#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
96
97/*
98 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
99 * must be called under HW lock and could unlock/lock it inside.
100 * It isn't an issue, since in the current implementation on the time when
101 * those functions are called:
102 *
103 * - Either context is IRQ and only IRQ handler can modify HW data,
104 * including rings related fields,
105 *
106 * - Or access to target mode variables from struct qla_tgt doesn't
107 * cross those functions boundaries, except tgt_stop, which
108 * additionally protected by irq_cmd_count.
109 */
110/* Predefs for callbacks handed to qla2xxx LLD */
111static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
2f424b9b 112 struct atio_from_isp *pkt, uint8_t);
2d70c103 113static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
5d964837 114static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 115 int fn, void *iocb, int flags);
116static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
a07100e0 117 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
b6a029e1
AE		 118static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
119 struct qla_tgt_cmd *cmd);
33e79977
QT		 120static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
121 struct atio_from_isp *atio, uint16_t status, int qfull);
55a9066f 122static void qlt_disable_vha(struct scsi_qla_host *vha);
b2032fd5 123static void qlt_clear_tgt_db(struct qla_tgt *tgt);
a6ca8878
AP		 124static void qlt_send_notify_ack(struct scsi_qla_host *vha,
125 struct imm_ntfy_from_isp *ntfy,
126 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
127 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
b7bd104e
AP		 128static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
129 struct imm_ntfy_from_isp *imm, int ha_locked);
726b8548
QT		 130static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
131 fc_port_t *fcport, bool local);
132void qlt_unreg_sess(struct fc_port *sess);
8f6fc8d4
QT		 133static void qlt_24xx_handle_abts(struct scsi_qla_host *,
134 struct abts_recv_from_24xx *);
135
2d70c103
NB		 136/*
137 * Global Variables
138 */
2d70c103 139static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
b7bd104e 140static struct kmem_cache *qla_tgt_plogi_cachep;
2d70c103
NB		 141static mempool_t *qla_tgt_mgmt_cmd_mempool;
142static struct workqueue_struct *qla_tgt_wq;
143static DEFINE_MUTEX(qla_tgt_mutex);
144static LIST_HEAD(qla_tgt_glist);
145
df673274
AP		 146/* This API intentionally takes dest as a parameter, rather than returning
147 * int value to avoid caller forgetting to issue wmb() after the store */
148void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
149{
150 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
151 *dest = atomic_inc_return(&base_vha->generation_tick);
152 /* memory barrier */
153 wmb();
154}
155
2d70c103
NB		 156/* Might release hw lock, then reaquire!! */
157static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
158{
159 /* Send marker if required */
160 if (unlikely(vha->marker_needed != 0)) {
161 int rc = qla2x00_issue_marker(vha, vha_locked);
162 if (rc != QLA_SUCCESS) {
163 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
164 "qla_target(%d): issue_marker() failed\n",
165 vha->vp_idx);
166 }
167 return rc;
168 }
169 return QLA_SUCCESS;
170}
171
172static inline
173struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
174 uint8_t *d_id)
175{
176 struct qla_hw_data *ha = vha->hw;
177 uint8_t vp_idx;
178
179 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
180 return NULL;
181
182 if (vha->d_id.b.al_pa == d_id[2])
183 return vha;
184
185 BUG_ON(ha->tgt.tgt_vp_map == NULL);
186 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
187 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
188 return ha->tgt.tgt_vp_map[vp_idx].vha;
189
190 return NULL;
191}
192
193static inline
194struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
195 uint16_t vp_idx)
196{
197 struct qla_hw_data *ha = vha->hw;
198
199 if (vha->vp_idx == vp_idx)
200 return vha;
201
202 BUG_ON(ha->tgt.tgt_vp_map == NULL);
203 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
204 return ha->tgt.tgt_vp_map[vp_idx].vha;
205
206 return NULL;
207}
208
33e79977
QT		 209static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
210{
211 unsigned long flags;
212
213 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
214
215 vha->hw->tgt.num_pend_cmds++;
fc90adaf
JC		 216 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
217 vha->qla_stats.stat_max_pend_cmds =
33e79977
QT		 218 vha->hw->tgt.num_pend_cmds;
219 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
220}
221static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
222{
223 unsigned long flags;
224
225 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
226 vha->hw->tgt.num_pend_cmds--;
227 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
228}
229
41dc529a
QT		 230
231static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
232 struct atio_from_isp *atio, uint8_t ha_locked)
233{
234 struct qla_tgt_sess_op *u;
235 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
236 unsigned long flags;
237
238 if (tgt->tgt_stop) {
239 ql_dbg(ql_dbg_async, vha, 0xffff,
240 "qla_target(%d): dropping unknown ATIO_TYPE7, "
241 "because tgt is being stopped", vha->vp_idx);
242 goto out_term;
243 }
244
245 u = kzalloc(sizeof(*u), GFP_ATOMIC);
246 if (u == NULL) {
247 ql_dbg(ql_dbg_async, vha, 0xffff,
248 "Alloc of struct unknown_atio (size %zd) failed", sizeof(*u));
249 /* It should be harmless and on the next retry should work well */
250 goto out_term;
251 }
252
253 u->vha = vha;
254 memcpy(&u->atio, atio, sizeof(*atio));
255 INIT_LIST_HEAD(&u->cmd_list);
256
257 spin_lock_irqsave(&vha->cmd_list_lock, flags);
258 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
259 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
260
261 schedule_delayed_work(&vha->unknown_atio_work, 1);
262
263out:
264 return;
265
266out_term:
267 qlt_send_term_exchange(vha, NULL, atio, ha_locked, 0);
268 goto out;
269}
270
271static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
272 uint8_t ha_locked)
273{
274 struct qla_tgt_sess_op *u, *t;
275 scsi_qla_host_t *host;
276 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
277 unsigned long flags;
278 uint8_t queued = 0;
279
280 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
281 if (u->aborted) {
282 ql_dbg(ql_dbg_async, vha, 0xffff,
283 "Freeing unknown %s %p, because of Abort",
284 "ATIO_TYPE7", u);
285 qlt_send_term_exchange(vha, NULL, &u->atio,
286 ha_locked, 0);
287 goto abort;
288 }
289
290 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
291 if (host != NULL) {
292 ql_dbg(ql_dbg_async, vha, 0xffff,
293 "Requeuing unknown ATIO_TYPE7 %p", u);
294 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
295 } else if (tgt->tgt_stop) {
296 ql_dbg(ql_dbg_async, vha, 0xffff,
297 "Freeing unknown %s %p, because tgt is being stopped",
298 "ATIO_TYPE7", u);
299 qlt_send_term_exchange(vha, NULL, &u->atio,
300 ha_locked, 0);
301 } else {
302 ql_dbg(ql_dbg_async, vha, 0xffff,
303 "u %p, vha %p, host %p, sched again..", u,
304 vha, host);
305 if (!queued) {
306 queued = 1;
307 schedule_delayed_work(&vha->unknown_atio_work,
308 1);
309 }
310 continue;
311 }
312
313abort:
314 spin_lock_irqsave(&vha->cmd_list_lock, flags);
315 list_del(&u->cmd_list);
316 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
317 kfree(u);
318 }
319}
320
321void qlt_unknown_atio_work_fn(struct work_struct *work)
322{
323 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
324 struct scsi_qla_host, unknown_atio_work);
325
326 qlt_try_to_dequeue_unknown_atios(vha, 0);
327}
328
3bb67df5 329static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2f424b9b 330 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103 331{
f83adb61
QT		 332 ql_dbg(ql_dbg_tgt, vha, 0xe072,
333 "%s: qla_target(%d): type %x ox_id %04x\n",
334 __func__, vha->vp_idx, atio->u.raw.entry_type,
335 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
336
2d70c103
NB		 337 switch (atio->u.raw.entry_type) {
338 case ATIO_TYPE7:
339 {
340 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
341 atio->u.isp24.fcp_hdr.d_id);
342 if (unlikely(NULL == host)) {
343 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
344 "qla_target(%d): Received ATIO_TYPE7 "
345 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
346 atio->u.isp24.fcp_hdr.d_id[0],
347 atio->u.isp24.fcp_hdr.d_id[1],
348 atio->u.isp24.fcp_hdr.d_id[2]);
41dc529a
QT		 349
350
351 qlt_queue_unknown_atio(vha, atio, ha_locked);
2d70c103
NB		 352 break;
353 }
41dc529a
QT		 354 if (unlikely(!list_empty(&vha->unknown_atio_list)))
355 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
356
2f424b9b 357 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 358 break;
359 }
360
361 case IMMED_NOTIFY_TYPE:
362 {
363 struct scsi_qla_host *host = vha;
364 struct imm_ntfy_from_isp *entry =
365 (struct imm_ntfy_from_isp *)atio;
366
367 if ((entry->u.isp24.vp_index != 0xFF) &&
368 (entry->u.isp24.nport_handle != 0xFFFF)) {
369 host = qlt_find_host_by_vp_idx(vha,
370 entry->u.isp24.vp_index);
371 if (unlikely(!host)) {
372 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
373 "qla_target(%d): Received "
374 "ATIO (IMMED_NOTIFY_TYPE) "
375 "with unknown vp_index %d\n",
376 vha->vp_idx, entry->u.isp24.vp_index);
377 break;
378 }
379 }
2f424b9b 380 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 381 break;
382 }
383
41dc529a
QT		 384 case VP_RPT_ID_IOCB_TYPE:
385 qla24xx_report_id_acquisition(vha,
386 (struct vp_rpt_id_entry_24xx *)atio);
387 break;
388
389 case ABTS_RECV_24XX:
390 {
391 struct abts_recv_from_24xx *entry =
392 (struct abts_recv_from_24xx *)atio;
393 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
394 entry->vp_index);
8f6fc8d4
QT		 395 unsigned long flags;
396
41dc529a
QT		 397 if (unlikely(!host)) {
398 ql_dbg(ql_dbg_tgt, vha, 0xffff,
399 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
400 "received, with unknown vp_index %d\n",
401 vha->vp_idx, entry->vp_index);
402 break;
403 }
8f6fc8d4
QT		 404 if (!ha_locked)
405 spin_lock_irqsave(&host->hw->hardware_lock, flags);
406 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
407 if (!ha_locked)
408 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
41dc529a 409 break;
41dc529a
QT		 410 }
411
412 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
413
2d70c103
NB		 414 default:
415 ql_dbg(ql_dbg_tgt, vha, 0xe040,
416 "qla_target(%d): Received unknown ATIO atio "
417 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
418 break;
419 }
420
3bb67df5 421 return false;
2d70c103
NB		 422}
423
424void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
425{
426 switch (pkt->entry_type) {
f83adb61
QT		 427 case CTIO_CRC2:
428 ql_dbg(ql_dbg_tgt, vha, 0xe073,
429 "qla_target(%d):%s: CRC2 Response pkt\n",
430 vha->vp_idx, __func__);
2d70c103
NB		 431 case CTIO_TYPE7:
432 {
433 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
434 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
435 entry->vp_index);
436 if (unlikely(!host)) {
437 ql_dbg(ql_dbg_tgt, vha, 0xe041,
438 "qla_target(%d): Response pkt (CTIO_TYPE7) "
439 "received, with unknown vp_index %d\n",
440 vha->vp_idx, entry->vp_index);
441 break;
442 }
443 qlt_response_pkt(host, pkt);
444 break;
445 }
446
447 case IMMED_NOTIFY_TYPE:
448 {
449 struct scsi_qla_host *host = vha;
450 struct imm_ntfy_from_isp *entry =
451 (struct imm_ntfy_from_isp *)pkt;
452
453 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
454 if (unlikely(!host)) {
455 ql_dbg(ql_dbg_tgt, vha, 0xe042,
456 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
457 "received, with unknown vp_index %d\n",
458 vha->vp_idx, entry->u.isp24.vp_index);
459 break;
460 }
461 qlt_response_pkt(host, pkt);
462 break;
463 }
464
465 case NOTIFY_ACK_TYPE:
466 {
467 struct scsi_qla_host *host = vha;
468 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
469
470 if (0xFF != entry->u.isp24.vp_index) {
471 host = qlt_find_host_by_vp_idx(vha,
472 entry->u.isp24.vp_index);
473 if (unlikely(!host)) {
474 ql_dbg(ql_dbg_tgt, vha, 0xe043,
475 "qla_target(%d): Response "
476 "pkt (NOTIFY_ACK_TYPE) "
477 "received, with unknown "
478 "vp_index %d\n", vha->vp_idx,
479 entry->u.isp24.vp_index);
480 break;
481 }
482 }
483 qlt_response_pkt(host, pkt);
484 break;
485 }
486
487 case ABTS_RECV_24XX:
488 {
489 struct abts_recv_from_24xx *entry =
490 (struct abts_recv_from_24xx *)pkt;
491 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
492 entry->vp_index);
493 if (unlikely(!host)) {
494 ql_dbg(ql_dbg_tgt, vha, 0xe044,
495 "qla_target(%d): Response pkt "
496 "(ABTS_RECV_24XX) received, with unknown "
497 "vp_index %d\n", vha->vp_idx, entry->vp_index);
498 break;
499 }
500 qlt_response_pkt(host, pkt);
501 break;
502 }
503
504 case ABTS_RESP_24XX:
505 {
506 struct abts_resp_to_24xx *entry =
507 (struct abts_resp_to_24xx *)pkt;
508 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
509 entry->vp_index);
510 if (unlikely(!host)) {
511 ql_dbg(ql_dbg_tgt, vha, 0xe045,
512 "qla_target(%d): Response pkt "
513 "(ABTS_RECV_24XX) received, with unknown "
514 "vp_index %d\n", vha->vp_idx, entry->vp_index);
515 break;
516 }
517 qlt_response_pkt(host, pkt);
518 break;
519 }
520
521 default:
522 qlt_response_pkt(vha, pkt);
523 break;
524 }
525
526}
527
b7bd104e
AP		 528/*
529 * All qlt_plogi_ack_t operations are protected by hardware_lock
530 */
726b8548
QT		 531static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
532 struct imm_ntfy_from_isp *ntfy, int type)
533{
534 struct qla_work_evt *e;
535 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
536 if (!e)
537 return QLA_FUNCTION_FAILED;
538
539 e->u.nack.fcport = fcport;
540 e->u.nack.type = type;
541 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
542 return qla2x00_post_work(vha, e);
543}
544
545static
25ff6af1 546void qla2x00_async_nack_sp_done(void *s, int res)
726b8548 547{
726b8548 548 struct srb *sp = (struct srb *)s;
25ff6af1 549 struct scsi_qla_host *vha = sp->vha;
726b8548
QT		 550 unsigned long flags;
551
552 ql_dbg(ql_dbg_disc, vha, 0xffff,
553 "Async done-%s res %x %8phC type %d\n",
554 sp->name, res, sp->fcport->port_name, sp->type);
555
556 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
557 sp->fcport->flags &= ~FCF_ASYNC_SENT;
558 sp->fcport->chip_reset = vha->hw->chip_reset;
559
560 switch (sp->type) {
561 case SRB_NACK_PLOGI:
562 sp->fcport->login_gen++;
563 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
564 sp->fcport->logout_on_delete = 1;
565 break;
566
567 case SRB_NACK_PRLI:
568 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
569 sp->fcport->deleted = 0;
570
571 if (!sp->fcport->login_succ &&
572 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
573 sp->fcport->login_succ = 1;
574
575 vha->fcport_count++;
576
577 if (!IS_IIDMA_CAPABLE(vha->hw) ||
578 !vha->hw->flags.gpsc_supported) {
579 ql_dbg(ql_dbg_disc, vha, 0xffff,
580 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
581 __func__, __LINE__,
582 sp->fcport->port_name,
583 vha->fcport_count);
584
585 qla24xx_post_upd_fcport_work(vha, sp->fcport);
586 } else {
587 ql_dbg(ql_dbg_disc, vha, 0xffff,
588 "%s %d %8phC post gpsc fcp_cnt %d\n",
589 __func__, __LINE__,
590 sp->fcport->port_name,
591 vha->fcport_count);
592
593 qla24xx_post_gpsc_work(vha, sp->fcport);
594 }
595 }
596 break;
597
598 case SRB_NACK_LOGO:
599 sp->fcport->login_gen++;
600 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
601 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
602 break;
603 }
604 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
605
25ff6af1 606 sp->free(sp);
726b8548
QT		 607}
608
609int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
610 struct imm_ntfy_from_isp *ntfy, int type)
611{
612 int rval = QLA_FUNCTION_FAILED;
613 srb_t *sp;
614 char *c = NULL;
615
616 fcport->flags |= FCF_ASYNC_SENT;
617 switch (type) {
618 case SRB_NACK_PLOGI:
619 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
620 c = "PLOGI";
621 break;
622 case SRB_NACK_PRLI:
623 fcport->fw_login_state = DSC_LS_PRLI_PEND;
624 c = "PRLI";
625 break;
626 case SRB_NACK_LOGO:
627 fcport->fw_login_state = DSC_LS_LOGO_PEND;
628 c = "LOGO";
629 break;
630 }
631
632 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
633 if (!sp)
634 goto done;
635
636 sp->type = type;
637 sp->name = "nack";
638
639 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
640
641 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
642
643 sp->done = qla2x00_async_nack_sp_done;
644
645 rval = qla2x00_start_sp(sp);
646 if (rval != QLA_SUCCESS)
647 goto done_free_sp;
648
649 ql_dbg(ql_dbg_disc, vha, 0xffff,
650 "Async-%s %8phC hndl %x %s\n",
651 sp->name, fcport->port_name, sp->handle, c);
652
653 return rval;
654
655done_free_sp:
25ff6af1 656 sp->free(sp);
726b8548
QT		 657done:
658 fcport->flags &= ~FCF_ASYNC_SENT;
659 return rval;
660}
661
662void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
663{
664 fc_port_t *t;
665 unsigned long flags;
666
667 switch (e->u.nack.type) {
668 case SRB_NACK_PRLI:
669 mutex_lock(&vha->vha_tgt.tgt_mutex);
670 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
671 mutex_unlock(&vha->vha_tgt.tgt_mutex);
672 if (t) {
673 ql_log(ql_log_info, vha, 0xffff,
674 "%s create sess success %p", __func__, t);
675 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
676 /* create sess has an extra kref */
677 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
678 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
679 }
680 break;
681 }
682 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
683 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
684}
685
686void qla24xx_delete_sess_fn(struct work_struct *work)
687{
688 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
689 struct qla_hw_data *ha = fcport->vha->hw;
690 unsigned long flags;
691
692 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
693
694 if (fcport->se_sess) {
695 ha->tgt.tgt_ops->shutdown_sess(fcport);
696 ha->tgt.tgt_ops->put_sess(fcport);
697 } else {
698 qlt_unreg_sess(fcport);
699 }
700 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
701}
702
703/*
704 * Called from qla2x00_reg_remote_port()
705 */
706void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
707{
708 struct qla_hw_data *ha = vha->hw;
709 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
710 struct fc_port *sess = fcport;
711 unsigned long flags;
712
713 if (!vha->hw->tgt.tgt_ops)
714 return;
715
716 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
717 if (tgt->tgt_stop) {
718 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
719 return;
720 }
721
722 if (fcport->disc_state == DSC_DELETE_PEND) {
723 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
724 return;
725 }
726
727 if (!sess->se_sess) {
728 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
729
730 mutex_lock(&vha->vha_tgt.tgt_mutex);
731 sess = qlt_create_sess(vha, fcport, false);
732 mutex_unlock(&vha->vha_tgt.tgt_mutex);
733
734 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
735 } else {
736 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
737 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
738 return;
739 }
740
741 if (!kref_get_unless_zero(&sess->sess_kref)) {
742 ql_dbg(ql_dbg_disc, vha, 0xffff,
743 "%s: kref_get fail sess %8phC \n",
744 __func__, sess->port_name);
745 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
746 return;
747 }
748
749 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
750 "qla_target(%u): %ssession for port %8phC "
751 "(loop ID %d) reappeared\n", vha->vp_idx,
752 sess->local ? "local " : "", sess->port_name, sess->loop_id);
753
754 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
755 "Reappeared sess %p\n", sess);
756
757 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
758 fcport->loop_id,
759 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
760 }
761
762 if (sess && sess->local) {
763 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
764 "qla_target(%u): local session for "
765 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
766 fcport->port_name, sess->loop_id);
767 sess->local = 0;
768 }
769 ha->tgt.tgt_ops->put_sess(sess);
770 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
771}
b7bd104e
AP		 772
773/*
774 * This is a zero-base ref-counting solution, since hardware_lock
775 * guarantees that ref_count is not modified concurrently.
776 * Upon successful return content of iocb is undefined
777 */
5d964837 778static struct qlt_plogi_ack_t *
b7bd104e
AP		 779qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
780 struct imm_ntfy_from_isp *iocb)
781{
5d964837 782 struct qlt_plogi_ack_t *pla;
b7bd104e
AP		 783
784 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
785 if (pla->id.b24 == id->b24) {
786 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 787 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 788 return pla;
789 }
790 }
791
792 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
793 if (!pla) {
794 ql_dbg(ql_dbg_async, vha, 0x5088,
795 "qla_target(%d): Allocation of plogi_ack failed\n",
796 vha->vp_idx);
797 return NULL;
798 }
799
5d964837 800 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 801 pla->id = *id;
802 list_add_tail(&pla->list, &vha->plogi_ack_list);
803
804 return pla;
805}
806
726b8548 807void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 808 struct qlt_plogi_ack_t *pla)
b7bd104e 809{
5d964837 810 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 811 port_id_t port_id;
812 uint16_t loop_id;
813 fc_port_t *fcport = pla->fcport;
814
b7bd104e
AP		 815 BUG_ON(!pla->ref_count);
816 pla->ref_count--;
817
818 if (pla->ref_count)
819 return;
820
726b8548 821 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 822 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 823 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
824 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
825 iocb->u.isp24.port_id[0],
826 le16_to_cpu(iocb->u.isp24.nport_handle),
827 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 828
829 port_id.b.domain = iocb->u.isp24.port_id[2];
830 port_id.b.area = iocb->u.isp24.port_id[1];
831 port_id.b.al_pa = iocb->u.isp24.port_id[0];
832 port_id.b.rsvd_1 = 0;
833
834 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
835
836 fcport->loop_id = loop_id;
837 fcport->d_id = port_id;
838 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
839
840 list_for_each_entry(fcport, &vha->vp_fcports, list) {
841 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
842 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
843 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
844 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
845 }
b7bd104e
AP		 846
847 list_del(&pla->list);
848 kmem_cache_free(qla_tgt_plogi_cachep, pla);
849}
850
726b8548 851void
5d964837
QT		 852qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
853 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 854{
5d964837 855 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 856 /* Inc ref_count first because link might already be pointing at pla */
857 pla->ref_count++;
858
726b8548
QT		 859 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
860 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
861 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
862 sess, link, sess->port_name,
863 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
864 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
865 pla->ref_count, pla, link);
866
b7bd104e
AP		 867 if (sess->plogi_link[link])
868 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
869
726b8548
QT		 870 if (link == QLT_PLOGI_LINK_SAME_WWN)
871 pla->fcport = sess;
b7bd104e
AP		 872
873 sess->plogi_link[link] = pla;
874}
875
71cdc079
AP		 876typedef struct {
877 /* These fields must be initialized by the caller */
878 port_id_t id;
879 /*
880 * number of cmds dropped while we were waiting for
881 * initiator to ack LOGO initialize to 1 if LOGO is
882 * triggered by a command, otherwise, to 0
883 */
884 int cmd_count;
885
886 /* These fields are used by callee */
887 struct list_head list;
888} qlt_port_logo_t;
889
890static void
891qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
892{
893 qlt_port_logo_t *tmp;
894 int res;
895
896 mutex_lock(&vha->vha_tgt.tgt_mutex);
897
898 list_for_each_entry(tmp, &vha->logo_list, list) {
899 if (tmp->id.b24 == logo->id.b24) {
900 tmp->cmd_count += logo->cmd_count;
901 mutex_unlock(&vha->vha_tgt.tgt_mutex);
902 return;
903 }
904 }
905
906 list_add_tail(&logo->list, &vha->logo_list);
907
908 mutex_unlock(&vha->vha_tgt.tgt_mutex);
909
910 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
911
912 mutex_lock(&vha->vha_tgt.tgt_mutex);
913 list_del(&logo->list);
914 mutex_unlock(&vha->vha_tgt.tgt_mutex);
915
b7bd104e
AP		 916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
917 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
918 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
919 logo->cmd_count, res);
71cdc079
AP		 920}
921
2d70c103
NB		 922static void qlt_free_session_done(struct work_struct *work)
923{
5d964837 924 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 925 free_work);
926 struct qla_tgt *tgt = sess->tgt;
927 struct scsi_qla_host *vha = sess->vha;
928 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 929 unsigned long flags;
930 bool logout_started = false;
726b8548 931 struct event_arg ea;
41dc529a 932 scsi_qla_host_t *base_vha;
a6ca8878
AP		 933
934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
935 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 936 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 937 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 938 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 939 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 940 sess->send_els_logo);
2d70c103 941
a6ca8878 942
726b8548 943 if (!IS_SW_RESV_ADDR(sess->d_id)) {
41dc529a
QT		 944 if (sess->send_els_logo) {
945 qlt_port_logo_t logo;
71cdc079 946
41dc529a
QT		 947 logo.id = sess->d_id;
948 logo.cmd_count = 0;
949 qlt_send_first_logo(vha, &logo);
950 }
951
952 if (sess->logout_on_delete) {
953 int rc;
954
955 rc = qla2x00_post_async_logout_work(vha, sess, NULL);
956 if (rc != QLA_SUCCESS)
957 ql_log(ql_log_warn, vha, 0xf085,
958 "Schedule logo failed sess %p rc %d\n",
959 sess, rc);
960 else
961 logout_started = true;
962 }
726b8548 963 }
a6ca8878 964
2d70c103
NB		 965 /*
966 * Release the target session for FC Nexus from fabric module code.
967 */
968 if (sess->se_sess != NULL)
969 ha->tgt.tgt_ops->free_session(sess);
970
a6ca8878
AP		 971 if (logout_started) {
972 bool traced = false;
973
974 while (!ACCESS_ONCE(sess->logout_completed)) {
975 if (!traced) {
976 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
977 "%s: waiting for sess %p logout\n",
978 __func__, sess);
979 traced = true;
980 }
981 msleep(100);
982 }
983
726b8548 984 ql_dbg(ql_dbg_disc, vha, 0xf087,
41dc529a
QT		 985 "%s: sess %p logout completed\n",__func__, sess);
986 }
987
988 if (sess->logo_ack_needed) {
989 sess->logo_ack_needed = 0;
990 qla24xx_async_notify_ack(vha, sess,
991 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 992 }
993
726b8548
QT		 994 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
995 if (sess->se_sess) {
996 sess->se_sess = NULL;
997 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
998 tgt->sess_count--;
999 }
1000
1001 sess->disc_state = DSC_DELETED;
1002 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1003 sess->deleted = QLA_SESS_DELETED;
1004 sess->login_retry = vha->hw->login_retry_count;
1005
1006 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1007 vha->fcport_count--;
1008 sess->login_succ = 0;
1009 }
1010
1011 if (sess->chip_reset != sess->vha->hw->chip_reset)
1012 qla2x00_clear_loop_id(sess);
1013
1014 if (sess->conflict) {
1015 sess->conflict->login_pause = 0;
1016 sess->conflict = NULL;
1017 if (!test_bit(UNLOADING, &vha->dpc_flags))
1018 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1019 }
1020
b7bd104e 1021 {
5d964837 1022 struct qlt_plogi_ack_t *own =
b7bd104e 1023 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
5d964837 1024 struct qlt_plogi_ack_t *con =
b7bd104e 1025 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1026 struct imm_ntfy_from_isp *iocb;
b7bd104e
AP		 1027
1028 if (con) {
5d964837 1029 iocb = &con->iocb;
b7bd104e 1030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1031 "se_sess %p / sess %p port %8phC is gone,"
1032 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1033 sess->se_sess, sess, sess->port_name,
1034 own ? "releasing own PLOGI" : "no own PLOGI pending",
1035 own ? own->ref_count : -1,
1036 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1037 qlt_plogi_ack_unref(vha, con);
726b8548 1038 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1039 } else {
1040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1041 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1042 sess->se_sess, sess, sess->port_name,
1043 own ? "releasing own PLOGI" :
1044 "no own PLOGI pending",
1045 own ? own->ref_count : -1);
1046 }
1047
726b8548
QT		 1048 if (own) {
1049 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1050 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1051 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1052 }
b7bd104e 1053 }
5d964837
QT		 1054 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1055
2d70c103 1056 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
726b8548
QT		 1057 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1058 sess, sess->port_name, vha->fcport_count);
2d70c103 1059
726b8548 1060 if (tgt && (tgt->sess_count == 0))
2d70c103 1061 wake_up_all(&tgt->waitQ);
726b8548
QT		 1062
1063 if (vha->fcport_count == 0)
1064 wake_up_all(&vha->fcport_waitQ);
1065
41dc529a
QT		 1066 base_vha = pci_get_drvdata(ha->pdev);
1067 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1068 return;
1069
726b8548
QT		 1070 if (!tgt || !tgt->tgt_stop) {
1071 memset(&ea, 0, sizeof(ea));
1072 ea.event = FCME_DELETE_DONE;
1073 ea.fcport = sess;
1074 qla2x00_fcport_event_handler(vha, &ea);
1075 }
2d70c103
NB		 1076}
1077
7560151b 1078/* ha->tgt.sess_lock supposed to be held on entry */
5d964837 1079void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1080{
1081 struct scsi_qla_host *vha = sess->vha;
1082
5d964837
QT		 1083 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
1084 "%s sess %p for deletion %8phC\n",
1085 __func__, sess, sess->port_name);
1086
36c78452
QT		 1087 if (sess->se_sess)
1088 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1089
5d964837
QT		 1090 qla2x00_mark_device_lost(vha, sess, 1, 1);
1091
a6ca8878 1092 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
726b8548
QT		 1093 sess->disc_state = DSC_DELETE_PEND;
1094 sess->last_rscn_gen = sess->rscn_gen;
1095 sess->last_login_gen = sess->login_gen;
2d70c103
NB		 1096
1097 INIT_WORK(&sess->free_work, qlt_free_session_done);
1098 schedule_work(&sess->free_work);
1099}
5d964837 1100EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1101
2d70c103
NB		 1102static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1103{
1104 struct qla_hw_data *ha = vha->hw;
5d964837 1105 struct fc_port *sess = NULL;
2d70c103
NB		 1106 uint16_t loop_id;
1107 int res = 0;
1108 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1109 unsigned long flags;
2d70c103
NB		 1110
1111 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1112 if (loop_id == 0xFFFF) {
2d70c103 1113 /* Global event */
b2032fd5 1114 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1115 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1116 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1117 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1118 } else {
7560151b 1119 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1120 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1121 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1122 }
1123
1124 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1125 "Using sess for qla_tgt_reset: %p\n", sess);
1126 if (!sess) {
1127 res = -ESRCH;
1128 return res;
1129 }
1130
1131 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1132 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1133 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1134 mcmd, loop_id);
1135
bb1181c9 1136 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1137}
1138
726b8548
QT		 1139static void qla24xx_chk_fcp_state(struct fc_port *sess)
1140{
1141 if (sess->chip_reset != sess->vha->hw->chip_reset) {
1142 sess->logout_on_delete = 0;
1143 sess->logo_ack_needed = 0;
1144 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1145 sess->scan_state = 0;
1146 }
1147}
1148
7560151b 1149/* ha->tgt.sess_lock supposed to be held on entry */
726b8548 1150void qlt_schedule_sess_for_deletion(struct fc_port *sess,
2d70c103
NB		 1151 bool immediate)
1152{
1153 struct qla_tgt *tgt = sess->tgt;
2d70c103 1154
726b8548
QT		 1155 if (sess->disc_state == DSC_DELETE_PEND)
1156 return;
1157
1158 if (sess->disc_state == DSC_DELETED) {
1159 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1160 wake_up_all(&tgt->waitQ);
1161 if (sess->vha->fcport_count == 0)
1162 wake_up_all(&sess->vha->fcport_waitQ);
1163
1164 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1165 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878
AP		 1166 return;
1167 }
2d70c103 1168
726b8548 1169 sess->disc_state = DSC_DELETE_PEND;
2d70c103 1170
726b8548
QT		 1171 if (sess->deleted == QLA_SESS_DELETED)
1172 sess->logout_on_delete = 0;
1173
1174 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1175 qla24xx_chk_fcp_state(sess);
2d70c103 1176
726b8548
QT		 1177 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1178 "Scheduling sess %p for deletion\n", sess);
2d70c103 1179
726b8548
QT		 1180 schedule_work(&sess->del_work);
1181}
2d70c103 1182
726b8548
QT		 1183void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess)
1184{
1185 unsigned long flags;
1186 struct qla_hw_data *ha = sess->vha->hw;
1187 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1188 qlt_schedule_sess_for_deletion(sess, 1);
1189 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1190}
1191
7560151b 1192/* ha->tgt.sess_lock supposed to be held on entry */
c5701042 1193static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1194{
5d964837
QT		 1195 struct fc_port *sess;
1196 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1197
5d964837
QT		 1198 list_for_each_entry(sess, &vha->vp_fcports, list) {
1199 if (sess->se_sess)
726b8548 1200 qlt_schedule_sess_for_deletion(sess, 1);
5d964837 1201 }
2d70c103
NB		 1202
1203 /* At this point tgt could be already dead */
1204}
1205
1206static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1207 uint16_t *loop_id)
1208{
1209 struct qla_hw_data *ha = vha->hw;
1210 dma_addr_t gid_list_dma;
1211 struct gid_list_info *gid_list;
1212 char *id_iter;
1213 int res, rc, i;
1214 uint16_t entries;
1215
1216 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1217 &gid_list_dma, GFP_KERNEL);
1218 if (!gid_list) {
1219 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1220 "qla_target(%d): DMA Alloc failed of %u\n",
1221 vha->vp_idx, qla2x00_gid_list_size(ha));
1222 return -ENOMEM;
1223 }
1224
1225 /* Get list of logged in devices */
1226 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
1227 if (rc != QLA_SUCCESS) {
1228 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1229 "qla_target(%d): get_id_list() failed: %x\n",
1230 vha->vp_idx, rc);
71cdc079 1231 res = -EBUSY;
2d70c103
NB		 1232 goto out_free_id_list;
1233 }
1234
1235 id_iter = (char *)gid_list;
71cdc079 1236 res = -ENOENT;
2d70c103
NB		 1237 for (i = 0; i < entries; i++) {
1238 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1239 if ((gid->al_pa == s_id[2]) &&
1240 (gid->area == s_id[1]) &&
1241 (gid->domain == s_id[0])) {
1242 *loop_id = le16_to_cpu(gid->loop_id);
1243 res = 0;
1244 break;
1245 }
1246 id_iter += ha->gid_list_info_size;
1247 }
1248
1249out_free_id_list:
1250 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1251 gid_list, gid_list_dma);
1252 return res;
1253}
1254
2d70c103
NB		 1255/*
1256 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1257 * Caller must put it.
1258 */
5d964837 1259static struct fc_port *qlt_create_sess(
2d70c103
NB		 1260 struct scsi_qla_host *vha,
1261 fc_port_t *fcport,
1262 bool local)
1263{
1264 struct qla_hw_data *ha = vha->hw;
726b8548 1265 struct fc_port *sess = fcport;
2d70c103 1266 unsigned long flags;
2d70c103 1267
726b8548
QT		 1268 if (vha->vha_tgt.qla_tgt->tgt_stop)
1269 return NULL;
2d70c103 1270
726b8548
QT		 1271 if (fcport->se_sess) {
1272 if (!kref_get_unless_zero(&sess->sess_kref)) {
1273 ql_dbg(ql_dbg_disc, vha, 0xffff,
1274 "%s: kref_get_unless_zero failed for %8phC\n",
1275 __func__, sess->port_name);
1276 return NULL;
2d70c103 1277 }
726b8548 1278 return fcport;
2d70c103 1279 }
0e8cd71c 1280 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1281 sess->local = local;
a6ca8878 1282
726b8548
QT		 1283 /*
1284 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1285 * session eventually ends and release corresponding nport handle.
1286 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1287 * code will adjust these flags as necessary.
1288 */
a6ca8878
AP		 1289 sess->logout_on_delete = 1;
1290 sess->keep_nport_handle = 0;
726b8548 1291 sess->logout_completed = 0;
2d70c103 1292
726b8548
QT		 1293 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1294 &fcport->port_name[0], sess) < 0) {
1295 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
1296 "(%d) %8phC check_initiator_node_acl failed\n",
1297 vha->vp_idx, fcport->port_name);
1298 return NULL;
1299 } else {
1300 kref_init(&fcport->sess_kref);
1301 /*
1302 * Take an extra reference to ->sess_kref here to handle
1303 * fc_port access across ->tgt.sess_lock reaquire.
1304 */
1305 if (!kref_get_unless_zero(&sess->sess_kref)) {
1306 ql_dbg(ql_dbg_disc, vha, 0xffff,
1307 "%s: kref_get_unless_zero failed for %8phC\n",
1308 __func__, sess->port_name);
1309 return NULL;
1310 }
2d70c103 1311
726b8548
QT		 1312 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1313 if (!IS_SW_RESV_ADDR(sess->d_id))
1314 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1315
726b8548
QT		 1316 qlt_do_generation_tick(vha, &sess->generation);
1317 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1318 }
1319
1320 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1321 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1322 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1323 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1324
1325 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1326 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1327 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1328 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1329 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1330 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1331
1332 return sess;
1333}
1334
df673274
AP		 1335/*
1336 * max_gen - specifies maximum session generation
1337 * at which this deletion requestion is still valid
1338 */
1339void
1340qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1341{
0e8cd71c 1342 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1343 struct fc_port *sess = fcport;
7560151b 1344 unsigned long flags;
2d70c103
NB		 1345
1346 if (!vha->hw->tgt.tgt_ops)
1347 return;
1348
b2032fd5 1349 if (!tgt)
2d70c103
NB		 1350 return;
1351
7560151b 1352 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1353 if (tgt->tgt_stop) {
7560151b 1354 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1355 return;
1356 }
5d964837 1357 if (!sess->se_sess) {
7560151b 1358 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1359 return;
1360 }
1361
df673274 1362 if (max_gen - sess->generation < 0) {
7560151b 1363 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1364 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1365 "Ignoring stale deletion request for se_sess %p / sess %p"
1366 " for port %8phC, req_gen %d, sess_gen %d\n",
1367 sess->se_sess, sess, sess->port_name, max_gen,
1368 sess->generation);
1369 return;
1370 }
1371
2d70c103
NB		 1372 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1373
1374 sess->local = 1;
1375 qlt_schedule_sess_for_deletion(sess, false);
7560151b 1376 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1377}
1378
1379static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1380{
1381 struct qla_hw_data *ha = tgt->ha;
1382 unsigned long flags;
1383 int res;
1384 /*
1385 * We need to protect against race, when tgt is freed before or
1386 * inside wake_up()
1387 */
726b8548 1388 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1389 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1390 "tgt %p, sess_count=%d\n",
1391 tgt, tgt->sess_count);
2d70c103 1392 res = (tgt->sess_count == 0);
726b8548 1393 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1394
1395 return res;
1396}
1397
1398/* Called by tcm_qla2xxx configfs code */
3c231bda 1399int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1400{
1401 struct scsi_qla_host *vha = tgt->vha;
1402 struct qla_hw_data *ha = tgt->ha;
1403 unsigned long flags;
1404
3c231bda
NB		 1405 mutex_lock(&qla_tgt_mutex);
1406 if (!vha->fc_vport) {
1407 struct Scsi_Host *sh = vha->host;
1408 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1409 bool npiv_vports;
1410
1411 spin_lock_irqsave(sh->host_lock, flags);
1412 npiv_vports = (fc_host->npiv_vports_inuse);
1413 spin_unlock_irqrestore(sh->host_lock, flags);
1414
1415 if (npiv_vports) {
1416 mutex_unlock(&qla_tgt_mutex);
1417 return -EPERM;
1418 }
1419 }
2d70c103
NB		 1420 if (tgt->tgt_stop || tgt->tgt_stopped) {
1421 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1422 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1423 mutex_unlock(&qla_tgt_mutex);
1424 return -EPERM;
2d70c103
NB		 1425 }
1426
1427 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1428 vha->host_no, vha);
1429 /*
1430 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1431 * Lock is needed, because we still can get an incoming packet.
1432 */
0e8cd71c 1433 mutex_lock(&vha->vha_tgt.tgt_mutex);
7560151b 1434 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1435 tgt->tgt_stop = 1;
c5701042 1436 qlt_clear_tgt_db(tgt);
7560151b 1437 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
0e8cd71c 1438 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1439 mutex_unlock(&qla_tgt_mutex);
2d70c103 1440
2d70c103
NB		 1441 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1442 "Waiting for sess works (tgt %p)", tgt);
1443 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1444 while (!list_empty(&tgt->sess_works_list)) {
1445 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1446 flush_scheduled_work();
1447 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1448 }
1449 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1450
1451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1452 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103
NB		 1453
1454 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1455
1456 /* Big hammer */
ead03855
QT		 1457 if (!ha->flags.host_shutting_down &&
1458 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1459 qlt_disable_vha(vha);
1460
1461 /* Wait for sessions to clear out (just in case) */
1462 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 1463 return 0;
2d70c103
NB		 1464}
1465EXPORT_SYMBOL(qlt_stop_phase1);
1466
1467/* Called by tcm_qla2xxx configfs code */
1468void qlt_stop_phase2(struct qla_tgt *tgt)
1469{
1470 struct qla_hw_data *ha = tgt->ha;
0e8cd71c 1471 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 1472 unsigned long flags;
1473
1474 if (tgt->tgt_stopped) {
0e8cd71c 1475 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1476 "Already in tgt->tgt_stopped state\n");
1477 dump_stack();
1478 return;
1479 }
1480
0e8cd71c 1481 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
2d70c103
NB		 1482 "Waiting for %d IRQ commands to complete (tgt %p)",
1483 tgt->irq_cmd_count, tgt);
1484
0e8cd71c 1485 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1486 spin_lock_irqsave(&ha->hardware_lock, flags);
2f424b9b 1487 while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) {
2d70c103
NB		 1488 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1489 udelay(2);
1490 spin_lock_irqsave(&ha->hardware_lock, flags);
1491 }
1492 tgt->tgt_stop = 0;
1493 tgt->tgt_stopped = 1;
1494 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 1495 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1496
0e8cd71c 1497 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
2d70c103
NB		 1498 tgt);
1499}
1500EXPORT_SYMBOL(qlt_stop_phase2);
1501
1502/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1503static void qlt_release(struct qla_tgt *tgt)
2d70c103 1504{
0e8cd71c 1505 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1506
0e8cd71c 1507 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1508 qlt_stop_phase2(tgt);
1509
0e8cd71c 1510 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1511
0e8cd71c 1512 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1513 "Release of tgt %p finished\n", tgt);
1514
1515 kfree(tgt);
1516}
1517
1518/* ha->hardware_lock supposed to be held on entry */
1519static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1520 const void *param, unsigned int param_size)
1521{
1522 struct qla_tgt_sess_work_param *prm;
1523 unsigned long flags;
1524
1525 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1526 if (!prm) {
1527 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1528 "qla_target(%d): Unable to create session "
1529 "work, command will be refused", 0);
1530 return -ENOMEM;
1531 }
1532
1533 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1534 "Scheduling work (type %d, prm %p)"
1535 " to find session for param %p (size %d, tgt %p)\n",
1536 type, prm, param, param_size, tgt);
1537
1538 prm->type = type;
1539 memcpy(&prm->tm_iocb, param, param_size);
1540
1541 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1542 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1543 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1544
1545 schedule_work(&tgt->sess_work);
1546
1547 return 0;
1548}
1549
1550/*
1551 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1552 */
1553static void qlt_send_notify_ack(struct scsi_qla_host *vha,
1554 struct imm_ntfy_from_isp *ntfy,
1555 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1556 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1557{
1558 struct qla_hw_data *ha = vha->hw;
1559 request_t *pkt;
1560 struct nack_to_isp *nack;
1561
1562 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1563
1564 /* Send marker if required */
1565 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1566 return;
1567
1568 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1569 if (!pkt) {
1570 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1571 "qla_target(%d): %s failed: unable to allocate "
1572 "request packet\n", vha->vp_idx, __func__);
1573 return;
1574 }
1575
0e8cd71c
SK		 1576 if (vha->vha_tgt.qla_tgt != NULL)
1577 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1578
1579 pkt->entry_type = NOTIFY_ACK_TYPE;
1580 pkt->entry_count = 1;
1581
1582 nack = (struct nack_to_isp *)pkt;
1583 nack->ox_id = ntfy->ox_id;
1584
726b8548 1585 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1586 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1587 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1588 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1589 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1590 }
1591 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1592 nack->u.isp24.status = ntfy->u.isp24.status;
1593 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1594 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1595 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1596 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1597 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1598 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1599 nack->u.isp24.srr_reject_code = srr_reject_code;
1600 nack->u.isp24.srr_reject_code_expl = srr_explan;
1601 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1602
1603 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1604 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1605 vha->vp_idx, nack->u.isp24.status);
1606
63163e06
HM		 1607 /* Memory Barrier */
1608 wmb();
2d70c103
NB		 1609 qla2x00_start_iocbs(vha, vha->req);
1610}
1611
1612/*
1613 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1614 */
1615static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1616 struct abts_recv_from_24xx *abts, uint32_t status,
1617 bool ids_reversed)
1618{
1619 struct qla_hw_data *ha = vha->hw;
1620 struct abts_resp_to_24xx *resp;
1621 uint32_t f_ctl;
1622 uint8_t *p;
1623
1624 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1625 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1626 ha, abts, status);
1627
1628 /* Send marker if required */
1629 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1630 return;
1631
b6a029e1 1632 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1633 if (!resp) {
1634 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1635 "qla_target(%d): %s failed: unable to allocate "
1636 "request packet", vha->vp_idx, __func__);
1637 return;
1638 }
1639
1640 resp->entry_type = ABTS_RESP_24XX;
1641 resp->entry_count = 1;
1642 resp->nport_handle = abts->nport_handle;
1643 resp->vp_index = vha->vp_idx;
1644 resp->sof_type = abts->sof_type;
1645 resp->exchange_address = abts->exchange_address;
1646 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1647 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1648 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1649 F_CTL_SEQ_INITIATIVE);
1650 p = (uint8_t *)&f_ctl;
1651 resp->fcp_hdr_le.f_ctl[0] = *p++;
1652 resp->fcp_hdr_le.f_ctl[1] = *p++;
1653 resp->fcp_hdr_le.f_ctl[2] = *p;
1654 if (ids_reversed) {
1655 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1656 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1657 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1658 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1659 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1660 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1661 } else {
1662 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1663 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1664 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1665 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1666 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1667 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1668 }
1669 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1670 if (status == FCP_TMF_CMPL) {
1671 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1672 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1673 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1674 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1675 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1676 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1677 } else {
1678 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1679 resp->payload.ba_rjt.reason_code =
1680 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1681 /* Other bytes are zero */
1682 }
1683
0e8cd71c 1684 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1685
63163e06
HM		 1686 /* Memory Barrier */
1687 wmb();
2d70c103
NB		 1688 qla2x00_start_iocbs(vha, vha->req);
1689}
1690
1691/*
1692 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1693 */
1694static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1695 struct abts_resp_from_24xx_fw *entry)
1696{
1697 struct ctio7_to_24xx *ctio;
1698
1699 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1700 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1701 /* Send marker if required */
1702 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1703 return;
1704
b6a029e1 1705 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1706 if (ctio == NULL) {
1707 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1708 "qla_target(%d): %s failed: unable to allocate "
1709 "request packet\n", vha->vp_idx, __func__);
1710 return;
1711 }
1712
1713 /*
1714 * We've got on entrance firmware's response on by us generated
1715 * ABTS response. So, in it ID fields are reversed.
1716 */
1717
1718 ctio->entry_type = CTIO_TYPE7;
1719 ctio->entry_count = 1;
1720 ctio->nport_handle = entry->nport_handle;
1721 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1722 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1723 ctio->vp_index = vha->vp_idx;
1724 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1725 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1726 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1727 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1728 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1729 CTIO7_FLAGS_TERMINATE);
33a5fcee 1730 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1731
63163e06
HM		 1732 /* Memory Barrier */
1733 wmb();
2d70c103
NB		 1734 qla2x00_start_iocbs(vha, vha->req);
1735
1736 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1737 FCP_TMF_CMPL, true);
1738}
1739
8b2f5ff3
SN		 1740static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1741{
1742 struct qla_tgt_sess_op *op;
1743 struct qla_tgt_cmd *cmd;
1744
1745 spin_lock(&vha->cmd_list_lock);
1746
1747 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1748 if (tag == op->atio.u.isp24.exchange_addr) {
1749 op->aborted = true;
1750 spin_unlock(&vha->cmd_list_lock);
1751 return 1;
1752 }
1753 }
1754
41dc529a
QT		 1755 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1756 if (tag == op->atio.u.isp24.exchange_addr) {
1757 op->aborted = true;
1758 spin_unlock(&vha->cmd_list_lock);
1759 return 1;
1760 }
1761 }
1762
8b2f5ff3
SN		 1763 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1764 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1765 cmd->aborted = 1;
8b2f5ff3
SN		 1766 spin_unlock(&vha->cmd_list_lock);
1767 return 1;
1768 }
1769 }
1770
1771 spin_unlock(&vha->cmd_list_lock);
1772 return 0;
1773}
1774
1775/* drop cmds for the given lun
1776 * XXX only looks for cmds on the port through which lun reset was recieved
1777 * XXX does not go through the list of other port (which may have cmds
1778 * for the same lun)
1779 */
1780static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1781 uint32_t lun, uint8_t *s_id)
1782{
1783 struct qla_tgt_sess_op *op;
1784 struct qla_tgt_cmd *cmd;
1785 uint32_t key;
1786
1787 key = sid_to_key(s_id);
1788 spin_lock(&vha->cmd_list_lock);
1789 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1790 uint32_t op_key;
1791 uint32_t op_lun;
1792
1793 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1794 op_lun = scsilun_to_int(
1795 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1796 if (op_key == key && op_lun == lun)
1797 op->aborted = true;
1798 }
41dc529a
QT		 1799
1800 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1801 uint32_t op_key;
1802 u64 op_lun;
1803
1804 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1805 op_lun = scsilun_to_int(
1806 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1807 if (op_key == key && op_lun == lun)
1808 op->aborted = true;
1809 }
1810
8b2f5ff3
SN		 1811 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1812 uint32_t cmd_key;
1813 uint32_t cmd_lun;
1814
1815 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1816 cmd_lun = scsilun_to_int(
1817 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1818 if (cmd_key == key && cmd_lun == lun)
193b50b9 1819 cmd->aborted = 1;
8b2f5ff3
SN		 1820 }
1821 spin_unlock(&vha->cmd_list_lock);
1822}
1823
2d70c103
NB		 1824/* ha->hardware_lock supposed to be held on entry */
1825static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 1826 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 1827{
1828 struct qla_hw_data *ha = vha->hw;
06e97b48 1829 struct se_session *se_sess = sess->se_sess;
2d70c103 1830 struct qla_tgt_mgmt_cmd *mcmd;
06e97b48
SH		 1831 struct se_cmd *se_cmd;
1832 u32 lun = 0;
2d70c103 1833 int rc;
06e97b48 1834 bool found_lun = false;
5d964837 1835 unsigned long flags;
06e97b48 1836
5d964837 1837 spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
06e97b48
SH		 1838 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1839 struct qla_tgt_cmd *cmd =
1840 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
649ee054 1841 if (se_cmd->tag == abts->exchange_addr_to_abort) {
06e97b48
SH		 1842 lun = cmd->unpacked_lun;
1843 found_lun = true;
1844 break;
1845 }
1846 }
5d964837 1847 spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
06e97b48 1848
8b2f5ff3
SN		 1849 /* cmd not in LIO lists, look in qla list */
1850 if (!found_lun) {
1851 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1852 /* send TASK_ABORT response immediately */
1853 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
1854 return 0;
1855 } else {
1856 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
1857 "unable to find cmd in driver or LIO for tag 0x%x\n",
1858 abts->exchange_addr_to_abort);
1859 return -ENOENT;
1860 }
1861 }
2d70c103
NB		 1862
1863 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1864 "qla_target(%d): task abort (tag=%d)\n",
1865 vha->vp_idx, abts->exchange_addr_to_abort);
1866
1867 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1868 if (mcmd == NULL) {
1869 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1870 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1871 vha->vp_idx, __func__);
1872 return -ENOMEM;
1873 }
1874 memset(mcmd, 0, sizeof(*mcmd));
1875
1876 mcmd->sess = sess;
1877 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
80187f8e 1878 mcmd->reset_count = vha->hw->chip_reset;
be92fc3f 1879 mcmd->tmr_func = QLA_TGT_ABTS;
2d70c103 1880
be92fc3f 1881 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func,
2d70c103
NB		 1882 abts->exchange_addr_to_abort);
1883 if (rc != 0) {
1884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1885 "qla_target(%d): tgt_ops->handle_tmr()"
1886 " failed: %d", vha->vp_idx, rc);
1887 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1888 return -EFAULT;
1889 }
1890
1891 return 0;
1892}
1893
1894/*
1895 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1896 */
1897static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1898 struct abts_recv_from_24xx *abts)
1899{
1900 struct qla_hw_data *ha = vha->hw;
5d964837 1901 struct fc_port *sess;
2d70c103
NB		 1902 uint32_t tag = abts->exchange_addr_to_abort;
1903 uint8_t s_id[3];
1904 int rc;
7560151b 1905 unsigned long flags;
2d70c103
NB		 1906
1907 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1908 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1909 "qla_target(%d): ABTS: Abort Sequence not "
1910 "supported\n", vha->vp_idx);
1911 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1912 return;
1913 }
1914
1915 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1917 "qla_target(%d): ABTS: Unknown Exchange "
1918 "Address received\n", vha->vp_idx);
1919 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1920 return;
1921 }
1922
1923 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1924 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1925 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1926 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1927 le32_to_cpu(abts->fcp_hdr_le.parameter));
1928
1929 s_id[0] = abts->fcp_hdr_le.s_id[2];
1930 s_id[1] = abts->fcp_hdr_le.s_id[1];
1931 s_id[2] = abts->fcp_hdr_le.s_id[0];
1932
7560151b 1933 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1934 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1935 if (!sess) {
1936 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1937 "qla_target(%d): task abort for non-existant session\n",
1938 vha->vp_idx);
0e8cd71c 1939 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103 1940 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
7560151b
QT		 1941
1942 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1943
2d70c103
NB		 1944 if (rc != 0) {
1945 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1946 false);
1947 }
1948 return;
1949 }
7560151b
QT		 1950 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1951
2d70c103 1952
726b8548 1953 if (sess->deleted) {
e52a8b45
AP		 1954 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1955 return;
1956 }
1957
2d70c103
NB		 1958 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1959 if (rc != 0) {
1960 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1961 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1962 vha->vp_idx, rc);
1963 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1964 return;
1965 }
1966}
1967
1968/*
1969 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1970 */
1971static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1972 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1973{
1974 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1975 struct ctio7_to_24xx *ctio;
33a5fcee 1976 uint16_t temp;
2d70c103
NB		 1977
1978 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1979 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1980 ha, atio, resp_code);
1981
1982 /* Send marker if required */
1983 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1984 return;
1985
1986 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1987 if (ctio == NULL) {
1988 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1989 "qla_target(%d): %s failed: unable to allocate "
1990 "request packet\n", ha->vp_idx, __func__);
1991 return;
1992 }
1993
1994 ctio->entry_type = CTIO_TYPE7;
1995 ctio->entry_count = 1;
1996 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1997 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 1998 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1999 ctio->vp_index = ha->vp_idx;
2000 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2001 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2002 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2003 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2004 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 2005 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
33a5fcee
QT		 2006 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2007 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2008 ctio->u.status1.scsi_status =
ad950360
BVA		 2009 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2010 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2011 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2012
63163e06
HM		 2013 /* Memory Barrier */
2014 wmb();
2d70c103
NB		 2015 qla2x00_start_iocbs(ha, ha->req);
2016}
2017
2018void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2019{
2020 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2021}
2022EXPORT_SYMBOL(qlt_free_mcmd);
2023
2024/* callback from target fabric module code */
2025void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2026{
2027 struct scsi_qla_host *vha = mcmd->sess->vha;
2028 struct qla_hw_data *ha = vha->hw;
2029 unsigned long flags;
2030
2031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2032 "TM response mcmd (%p) status %#x state %#x",
2033 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2034
2035 spin_lock_irqsave(&ha->hardware_lock, flags);
b6a029e1 2036
3bb67df5 2037 if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) {
b6a029e1 2038 /*
3bb67df5 2039 * Either the port is not online or this request was from
b6a029e1
AE		 2040 * previous life, just abort the processing.
2041 */
2042 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2043 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2044 vha->flags.online, qla2x00_reset_active(vha),
2045 mcmd->reset_count, ha->chip_reset);
b6a029e1
AE		 2046 ha->tgt.tgt_ops->free_mcmd(mcmd);
2047 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2048 return;
2049 }
2050
726b8548
QT		 2051 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2052 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
41dc529a
QT		 2053 ELS_LOGO ||
2054 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2055 ELS_PRLO ||
2056 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2057 ELS_TPRLO) {
726b8548
QT		 2058 ql_dbg(ql_dbg_disc, vha, 0xffff,
2059 "TM response logo %phC status %#x state %#x",
2060 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2061 mcmd->flags);
2062 qlt_schedule_sess_for_deletion_lock(mcmd->sess);
2063 } else {
2064 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
2065 0, 0, 0, 0, 0, 0);
2066 }
2067 } else {
d7236ac3 2068 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
2d70c103
NB		 2069 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
2070 mcmd->fc_tm_rsp, false);
2071 else
2072 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
2073 mcmd->fc_tm_rsp);
2074 }
2075 /*
2076 * Make the callback for ->free_mcmd() to queue_work() and invoke
2077 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2078 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2079 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2080 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2081 * qlt_xmit_tm_rsp() returns here..
2082 */
2083 ha->tgt.tgt_ops->free_mcmd(mcmd);
2084 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2085}
2086EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2087
2088/* No locks */
2089static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2090{
2091 struct qla_tgt_cmd *cmd = prm->cmd;
2092
2093 BUG_ON(cmd->sg_cnt == 0);
2094
2095 prm->sg = (struct scatterlist *)cmd->sg;
2096 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
2097 cmd->sg_cnt, cmd->dma_data_direction);
2098 if (unlikely(prm->seg_cnt == 0))
2099 goto out_err;
2100
2101 prm->cmd->sg_mapped = 1;
2102
f83adb61
QT		 2103 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2104 /*
2105 * If greater than four sg entries then we need to allocate
2106 * the continuation entries
2107 */
2108 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
2109 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2110 prm->tgt->datasegs_per_cmd,
2111 prm->tgt->datasegs_per_cont);
2112 } else {
2113 /* DIF */
2114 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2115 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2116 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2117 prm->tot_dsds = prm->seg_cnt;
2118 } else
2119 prm->tot_dsds = prm->seg_cnt;
2120
2121 if (cmd->prot_sg_cnt) {
2122 prm->prot_sg = cmd->prot_sg;
2123 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
2124 cmd->prot_sg, cmd->prot_sg_cnt,
2125 cmd->dma_data_direction);
2126 if (unlikely(prm->prot_seg_cnt == 0))
2127 goto out_err;
2128
2129 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2130 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2131 /* Dif Bundling not support here */
2132 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2133 cmd->blk_sz);
2134 prm->tot_dsds += prm->prot_seg_cnt;
2135 } else
2136 prm->tot_dsds += prm->prot_seg_cnt;
2137 }
2138 }
2d70c103 2139
2d70c103
NB		 2140 return 0;
2141
2142out_err:
2143 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
2144 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2145 0, prm->cmd->sg_cnt);
2146 return -1;
2147}
2148
f9b6721a 2149static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103
NB		 2150{
2151 struct qla_hw_data *ha = vha->hw;
2152
f9b6721a
JE		 2153 if (!cmd->sg_mapped)
2154 return;
2155
2d70c103
NB		 2156 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
2157 cmd->sg_mapped = 0;
f83adb61
QT		 2158
2159 if (cmd->prot_sg_cnt)
2160 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
2161 cmd->dma_data_direction);
2162
2163 if (cmd->ctx_dsd_alloced)
2164 qla2x00_clean_dsd_pool(ha, NULL, cmd);
2165
2166 if (cmd->ctx)
2167 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2168}
2169
2170static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
2171 uint32_t req_cnt)
2172{
d29fb736 2173 uint32_t cnt, cnt_in;
2d70c103
NB		 2174
2175 if (vha->req->cnt < (req_cnt + 2)) {
75554b68 2176 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
d29fb736 2177 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
2d70c103 2178
2d70c103
NB		 2179 if (vha->req->ring_index < cnt)
2180 vha->req->cnt = cnt - vha->req->ring_index;
2181 else
2182 vha->req->cnt = vha->req->length -
2183 (vha->req->ring_index - cnt);
2d70c103 2184
bc7095a9
AB		 2185 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
2186 ql_dbg(ql_dbg_io, vha, 0x305a,
2187 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n",
2188 vha->vp_idx, vha->req->ring_index,
2189 vha->req->cnt, req_cnt, cnt, cnt_in,
2190 vha->req->length);
2191 return -EAGAIN;
2192 }
2d70c103 2193 }
bc7095a9 2194
2d70c103
NB		 2195 vha->req->cnt -= req_cnt;
2196
2197 return 0;
2198}
2199
2200/*
2201 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2202 */
2203static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
2204{
2205 /* Adjust ring index. */
2206 vha->req->ring_index++;
2207 if (vha->req->ring_index == vha->req->length) {
2208 vha->req->ring_index = 0;
2209 vha->req->ring_ptr = vha->req->ring;
2210 } else {
2211 vha->req->ring_ptr++;
2212 }
2213 return (cont_entry_t *)vha->req->ring_ptr;
2214}
2215
2216/* ha->hardware_lock supposed to be held on entry */
2217static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
2218{
2219 struct qla_hw_data *ha = vha->hw;
2220 uint32_t h;
2221
2222 h = ha->tgt.current_handle;
2223 /* always increment cmd handle */
2224 do {
2225 ++h;
8d93f550 2226 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 2227 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
2228 if (h == ha->tgt.current_handle) {
667024a3 2229 ql_dbg(ql_dbg_io, vha, 0x305b,
2d70c103
NB		 2230 "qla_target(%d): Ran out of "
2231 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
2232 h = QLA_TGT_NULL_HANDLE;
2233 break;
2234 }
2235 } while ((h == QLA_TGT_NULL_HANDLE) ||
2236 (h == QLA_TGT_SKIP_HANDLE) ||
2237 (ha->tgt.cmds[h-1] != NULL));
2238
2239 if (h != QLA_TGT_NULL_HANDLE)
2240 ha->tgt.current_handle = h;
2241
2242 return h;
2243}
2244
2245/* ha->hardware_lock supposed to be held on entry */
2246static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
2247 struct scsi_qla_host *vha)
2248{
2249 uint32_t h;
2250 struct ctio7_to_24xx *pkt;
2251 struct qla_hw_data *ha = vha->hw;
2252 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2253 uint16_t temp;
2d70c103
NB		 2254
2255 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
2256 prm->pkt = pkt;
2257 memset(pkt, 0, sizeof(*pkt));
2258
2259 pkt->entry_type = CTIO_TYPE7;
2260 pkt->entry_count = (uint8_t)prm->req_cnt;
2261 pkt->vp_index = vha->vp_idx;
2262
2263 h = qlt_make_handle(vha);
2264 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2265 /*
2266 * CTIO type 7 from the firmware doesn't provide a way to
2267 * know the initiator's LOOP ID, hence we can't find
2268 * the session and, so, the command.
2269 */
2270 return -EAGAIN;
2271 } else
2272 ha->tgt.cmds[h-1] = prm->cmd;
2273
2274 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2275 pkt->nport_handle = prm->cmd->loop_id;
ad950360 2276 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2277 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2278 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2279 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2280 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2281 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
33a5fcee
QT		 2282 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2283 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2284 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2285
2d70c103
NB		 2286 return 0;
2287}
2288
2289/*
2290 * ha->hardware_lock supposed to be held on entry. We have already made sure
2291 * that there is sufficient amount of request entries to not drop it.
2292 */
2293static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
2294 struct scsi_qla_host *vha)
2295{
2296 int cnt;
2297 uint32_t *dword_ptr;
2298 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2299
2300 /* Build continuation packets */
2301 while (prm->seg_cnt > 0) {
2302 cont_a64_entry_t *cont_pkt64 =
2303 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
2304
2305 /*
2306 * Make sure that from cont_pkt64 none of
2307 * 64-bit specific fields used for 32-bit
2308 * addressing. Cast to (cont_entry_t *) for
2309 * that.
2310 */
2311
2312 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2313
2314 cont_pkt64->entry_count = 1;
2315 cont_pkt64->sys_define = 0;
2316
2317 if (enable_64bit_addressing) {
2318 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2319 dword_ptr =
2320 (uint32_t *)&cont_pkt64->dseg_0_address;
2321 } else {
2322 cont_pkt64->entry_type = CONTINUE_TYPE;
2323 dword_ptr =
2324 (uint32_t *)&((cont_entry_t *)
2325 cont_pkt64)->dseg_0_address;
2326 }
2327
2328 /* Load continuation entry data segments */
2329 for (cnt = 0;
2330 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
2331 cnt++, prm->seg_cnt--) {
2332 *dword_ptr++ =
2333 cpu_to_le32(pci_dma_lo32
2334 (sg_dma_address(prm->sg)));
2335 if (enable_64bit_addressing) {
2336 *dword_ptr++ =
2337 cpu_to_le32(pci_dma_hi32
2338 (sg_dma_address
2339 (prm->sg)));
2340 }
2341 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2342
2d70c103
NB		 2343 prm->sg = sg_next(prm->sg);
2344 }
2345 }
2346}
2347
2348/*
2349 * ha->hardware_lock supposed to be held on entry. We have already made sure
2350 * that there is sufficient amount of request entries to not drop it.
2351 */
2352static void qlt_load_data_segments(struct qla_tgt_prm *prm,
2353 struct scsi_qla_host *vha)
2354{
2355 int cnt;
2356 uint32_t *dword_ptr;
2357 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2358 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2359
2d70c103
NB		 2360 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2361
2362 /* Setup packet address segment pointer */
2363 dword_ptr = pkt24->u.status0.dseg_0_address;
2364
2365 /* Set total data segment count */
2366 if (prm->seg_cnt)
2367 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2368
2369 if (prm->seg_cnt == 0) {
2370 /* No data transfer */
2371 *dword_ptr++ = 0;
2372 *dword_ptr = 0;
2373 return;
2374 }
2375
2376 /* If scatter gather */
2d70c103
NB		 2377
2378 /* Load command entry data segments */
2379 for (cnt = 0;
2380 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
2381 cnt++, prm->seg_cnt--) {
2382 *dword_ptr++ =
2383 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2384 if (enable_64bit_addressing) {
2385 *dword_ptr++ =
2386 cpu_to_le32(pci_dma_hi32(
2387 sg_dma_address(prm->sg)));
2388 }
2389 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2390
2d70c103
NB		 2391 prm->sg = sg_next(prm->sg);
2392 }
2393
2394 qlt_load_cont_data_segments(prm, vha);
2395}
2396
2397static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2398{
2399 return cmd->bufflen > 0;
2400}
2401
2402/*
2403 * Called without ha->hardware_lock held
2404 */
2405static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2406 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2407 uint32_t *full_req_cnt)
2408{
2409 struct qla_tgt *tgt = cmd->tgt;
2410 struct scsi_qla_host *vha = tgt->vha;
2411 struct qla_hw_data *ha = vha->hw;
2412 struct se_cmd *se_cmd = &cmd->se_cmd;
2413
2d70c103
NB		 2414 prm->cmd = cmd;
2415 prm->tgt = tgt;
2416 prm->rq_result = scsi_status;
2417 prm->sense_buffer = &cmd->sense_buffer[0];
2418 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2419 prm->sg = NULL;
2420 prm->seg_cnt = -1;
2421 prm->req_cnt = 1;
2422 prm->add_status_pkt = 0;
2423
2d70c103
NB		 2424 /* Send marker if required */
2425 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2426 return -EFAULT;
2427
2d70c103
NB		 2428 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2429 if (qlt_pci_map_calc_cnt(prm) != 0)
2430 return -EAGAIN;
2431 }
2432
2433 *full_req_cnt = prm->req_cnt;
2434
2435 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2436 prm->residual = se_cmd->residual_count;
667024a3 2437 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
649ee054
BVA		 2438 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2439 prm->residual, se_cmd->tag,
2440 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2441 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2442 prm->rq_result |= SS_RESIDUAL_UNDER;
2443 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2444 prm->residual = se_cmd->residual_count;
667024a3 2445 ql_dbg(ql_dbg_io, vha, 0x305d,
649ee054
BVA		 2446 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2447 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2448 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2449 prm->rq_result |= SS_RESIDUAL_OVER;
2450 }
2451
2452 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2453 /*
2454 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2455 * ignored in *xmit_response() below
2456 */
2457 if (qlt_has_data(cmd)) {
2458 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2459 (IS_FWI2_CAPABLE(ha) &&
2460 (prm->rq_result != 0))) {
2461 prm->add_status_pkt = 1;
2462 (*full_req_cnt)++;
2463 }
2464 }
2465 }
2466
2d70c103
NB		 2467 return 0;
2468}
2469
2470static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
2471 struct qla_tgt_cmd *cmd, int sending_sense)
2472{
2473 if (ha->tgt.enable_class_2)
2474 return 0;
2475
2476 if (sending_sense)
2477 return cmd->conf_compl_supported;
2478 else
2479 return ha->tgt.enable_explicit_conf &&
2480 cmd->conf_compl_supported;
2481}
2482
2d70c103
NB		 2483static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2484 struct qla_tgt_prm *prm)
2485{
2486 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2487 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2488 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2d70c103 2489 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
ad950360 2490 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2491 CTIO7_FLAGS_EXPLICIT_CONFORM |
2492 CTIO7_FLAGS_CONFORM_REQ);
2493 }
2494 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2495 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2496 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2497 int i;
2498
2499 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
df2e32c5 2500 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2d70c103
NB		 2501 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
2502 "Skipping EXPLICIT_CONFORM and "
2503 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2504 "non GOOD status\n");
2505 goto skip_explict_conf;
2506 }
ad950360 2507 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2508 CTIO7_FLAGS_EXPLICIT_CONFORM |
2509 CTIO7_FLAGS_CONFORM_REQ);
2510 }
2511skip_explict_conf:
2512 ctio->u.status1.flags &=
ad950360 2513 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2514 ctio->u.status1.flags |=
ad950360 2515 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2516 ctio->u.status1.scsi_status |=
ad950360 2517 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2518 ctio->u.status1.sense_length =
2519 cpu_to_le16(prm->sense_buffer_len);
2520 for (i = 0; i < prm->sense_buffer_len/4; i++)
2521 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2522 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2523#if 0
2524 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
2525 static int q;
2526 if (q < 10) {
2527 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
2528 "qla_target(%d): %d bytes of sense "
2529 "lost", prm->tgt->ha->vp_idx,
2530 prm->sense_buffer_len % 4);
2531 q++;
2532 }
2533 }
2534#endif
2535 } else {
2536 ctio->u.status1.flags &=
ad950360 2537 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2538 ctio->u.status1.flags |=
ad950360 2539 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2540 ctio->u.status1.sense_length = 0;
2541 memset(ctio->u.status1.sense_data, 0,
2542 sizeof(ctio->u.status1.sense_data));
2543 }
2544
2545 /* Sense with len > 24, is it possible ??? */
2546}
2547
f83adb61
QT		 2548
2549
2550/* diff */
2551static inline int
2552qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2553{
2554 /*
2555 * Uncomment when corresponding SCSI changes are done.
2556 *
2557 if (!sp->cmd->prot_chk)
2558 return 0;
2559 *
2560 */
2561 switch (se_cmd->prot_op) {
2562 case TARGET_PROT_DOUT_INSERT:
2563 case TARGET_PROT_DIN_STRIP:
2564 if (ql2xenablehba_err_chk >= 1)
2565 return 1;
2566 break;
2567 case TARGET_PROT_DOUT_PASS:
2568 case TARGET_PROT_DIN_PASS:
2569 if (ql2xenablehba_err_chk >= 2)
2570 return 1;
2571 break;
2572 case TARGET_PROT_DIN_INSERT:
2573 case TARGET_PROT_DOUT_STRIP:
2574 return 1;
2575 default:
2576 break;
2577 }
2578 return 0;
2579}
2580
2581/*
2582 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
2583 *
2584 */
2585static inline void
2586qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
2587{
2588 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2589
2590 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
2591 * have been immplemented by TCM, before AppTag is avail.
2592 * Look for modesense_handlers[]
2593 */
c7ee3bd4 2594 ctx->app_tag = 0;
f83adb61
QT		 2595 ctx->app_tag_mask[0] = 0x0;
2596 ctx->app_tag_mask[1] = 0x0;
2597
2598 switch (se_cmd->prot_type) {
2599 case TARGET_DIF_TYPE0_PROT:
2600 /*
2601 * No check for ql2xenablehba_err_chk, as it would be an
2602 * I/O error if hba tag generation is not done.
2603 */
2604 ctx->ref_tag = cpu_to_le32(lba);
2605
2606 if (!qlt_hba_err_chk_enabled(se_cmd))
2607 break;
2608
2609 /* enable ALL bytes of the ref tag */
2610 ctx->ref_tag_mask[0] = 0xff;
2611 ctx->ref_tag_mask[1] = 0xff;
2612 ctx->ref_tag_mask[2] = 0xff;
2613 ctx->ref_tag_mask[3] = 0xff;
2614 break;
2615 /*
2616 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2617 * 16 bit app tag.
2618 */
2619 case TARGET_DIF_TYPE1_PROT:
2620 ctx->ref_tag = cpu_to_le32(lba);
2621
2622 if (!qlt_hba_err_chk_enabled(se_cmd))
2623 break;
2624
2625 /* enable ALL bytes of the ref tag */
2626 ctx->ref_tag_mask[0] = 0xff;
2627 ctx->ref_tag_mask[1] = 0xff;
2628 ctx->ref_tag_mask[2] = 0xff;
2629 ctx->ref_tag_mask[3] = 0xff;
2630 break;
2631 /*
2632 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2633 * match LBA in CDB + N
2634 */
2635 case TARGET_DIF_TYPE2_PROT:
2636 ctx->ref_tag = cpu_to_le32(lba);
2637
2638 if (!qlt_hba_err_chk_enabled(se_cmd))
2639 break;
2640
2641 /* enable ALL bytes of the ref tag */
2642 ctx->ref_tag_mask[0] = 0xff;
2643 ctx->ref_tag_mask[1] = 0xff;
2644 ctx->ref_tag_mask[2] = 0xff;
2645 ctx->ref_tag_mask[3] = 0xff;
2646 break;
2647
2648 /* For Type 3 protection: 16 bit GUARD only */
2649 case TARGET_DIF_TYPE3_PROT:
2650 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2651 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2652 break;
2653 }
2654}
2655
2656
2657static inline int
2658qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2659{
2660 uint32_t *cur_dsd;
f83adb61
QT		 2661 uint32_t transfer_length = 0;
2662 uint32_t data_bytes;
2663 uint32_t dif_bytes;
2664 uint8_t bundling = 1;
2665 uint8_t *clr_ptr;
2666 struct crc_context *crc_ctx_pkt = NULL;
2667 struct qla_hw_data *ha;
2668 struct ctio_crc2_to_fw *pkt;
2669 dma_addr_t crc_ctx_dma;
2670 uint16_t fw_prot_opts = 0;
2671 struct qla_tgt_cmd *cmd = prm->cmd;
2672 struct se_cmd *se_cmd = &cmd->se_cmd;
2673 uint32_t h;
2674 struct atio_from_isp *atio = &prm->cmd->atio;
c7ee3bd4 2675 uint16_t t16;
f83adb61 2676
f83adb61
QT		 2677 ha = vha->hw;
2678
2679 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2680 prm->pkt = pkt;
2681 memset(pkt, 0, sizeof(*pkt));
2682
2683 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2684 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2685 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2686 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2687
2688 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2689 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2690 bundling = 0;
2691
2692 /* Compute dif len and adjust data len to incude protection */
2693 data_bytes = cmd->bufflen;
2694 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2695
2696 switch (se_cmd->prot_op) {
2697 case TARGET_PROT_DIN_INSERT:
2698 case TARGET_PROT_DOUT_STRIP:
2699 transfer_length = data_bytes;
2700 data_bytes += dif_bytes;
2701 break;
2702
2703 case TARGET_PROT_DIN_STRIP:
2704 case TARGET_PROT_DOUT_INSERT:
2705 case TARGET_PROT_DIN_PASS:
2706 case TARGET_PROT_DOUT_PASS:
2707 transfer_length = data_bytes + dif_bytes;
2708 break;
2709
2710 default:
2711 BUG();
2712 break;
2713 }
2714
2715 if (!qlt_hba_err_chk_enabled(se_cmd))
2716 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2717 /* HBA error checking enabled */
2718 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2719 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2720 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2721 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2722 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2723 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2724 }
2725
2726 switch (se_cmd->prot_op) {
2727 case TARGET_PROT_DIN_INSERT:
2728 case TARGET_PROT_DOUT_INSERT:
2729 fw_prot_opts |= PO_MODE_DIF_INSERT;
2730 break;
2731 case TARGET_PROT_DIN_STRIP:
2732 case TARGET_PROT_DOUT_STRIP:
2733 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2734 break;
2735 case TARGET_PROT_DIN_PASS:
2736 case TARGET_PROT_DOUT_PASS:
2737 fw_prot_opts |= PO_MODE_DIF_PASS;
2738 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2739 break;
2740 default:/* Normal Request */
2741 fw_prot_opts |= PO_MODE_DIF_PASS;
2742 break;
2743 }
2744
2745
2746 /* ---- PKT ---- */
2747 /* Update entry type to indicate Command Type CRC_2 IOCB */
2748 pkt->entry_type = CTIO_CRC2;
2749 pkt->entry_count = 1;
2750 pkt->vp_index = vha->vp_idx;
2751
2752 h = qlt_make_handle(vha);
2753 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2754 /*
2755 * CTIO type 7 from the firmware doesn't provide a way to
2756 * know the initiator's LOOP ID, hence we can't find
2757 * the session and, so, the command.
2758 */
2759 return -EAGAIN;
2760 } else
2761 ha->tgt.cmds[h-1] = prm->cmd;
2762
2763
2764 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2765 pkt->nport_handle = prm->cmd->loop_id;
ad950360 2766 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2767 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2768 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2769 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2770 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2771
2772 /* silence compile warning */
2773 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2774 pkt->ox_id = cpu_to_le16(t16);
2775
2776 t16 = (atio->u.isp24.attr << 9);
2777 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2778 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2779
2780 /* Set transfer direction */
2781 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2782 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2783 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2784 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61
QT		 2785
2786
2787 pkt->dseg_count = prm->tot_dsds;
2788 /* Fibre channel byte count */
2789 pkt->transfer_length = cpu_to_le32(transfer_length);
2790
2791
2792 /* ----- CRC context -------- */
2793
2794 /* Allocate CRC context from global pool */
2795 crc_ctx_pkt = cmd->ctx =
2796 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2797
2798 if (!crc_ctx_pkt)
2799 goto crc_queuing_error;
2800
2801 /* Zero out CTX area. */
2802 clr_ptr = (uint8_t *)crc_ctx_pkt;
2803 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2804
2805 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2806 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2807
2808 /* Set handle */
2809 crc_ctx_pkt->handle = pkt->handle;
2810
2811 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2812
2813 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2814 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2815 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2816
2817
2818 if (!bundling) {
2819 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2820 } else {
2821 /*
2822 * Configure Bundling if we need to fetch interlaving
2823 * protection PCI accesses
2824 */
2825 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2826 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2827 crc_ctx_pkt->u.bundling.dseg_count =
2828 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2829 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2830 }
2831
2832 /* Finish the common fields of CRC pkt */
2833 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2834 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2835 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 2836 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61
QT		 2837
2838
2839 /* Walks data segments */
ad950360 2840 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 2841
2842 if (!bundling && prm->prot_seg_cnt) {
2843 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2844 prm->tot_dsds, cmd))
2845 goto crc_queuing_error;
2846 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2847 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2848 goto crc_queuing_error;
2849
2850 if (bundling && prm->prot_seg_cnt) {
2851 /* Walks dif segments */
c7ee3bd4 2852 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2853
2854 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2855 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2856 prm->prot_seg_cnt, cmd))
2857 goto crc_queuing_error;
2858 }
2859 return QLA_SUCCESS;
2860
2861crc_queuing_error:
2862 /* Cleanup will be performed by the caller */
2863
2864 return QLA_FUNCTION_FAILED;
2865}
2866
2867
2d70c103
NB		 2868/*
2869 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2870 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2871 */
2872int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2873 uint8_t scsi_status)
2874{
2875 struct scsi_qla_host *vha = cmd->vha;
2876 struct qla_hw_data *ha = vha->hw;
2877 struct ctio7_to_24xx *pkt;
2878 struct qla_tgt_prm prm;
2879 uint32_t full_req_cnt = 0;
2880 unsigned long flags = 0;
2881 int res;
2882
a6ca8878 2883 spin_lock_irqsave(&ha->hardware_lock, flags);
726b8548 2884 if (cmd->sess && cmd->sess->deleted) {
a6ca8878
AP		 2885 cmd->state = QLA_TGT_STATE_PROCESSED;
2886 if (cmd->sess->logout_completed)
2887 /* no need to terminate. FW already freed exchange. */
2888 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2889 else
a07100e0 2890 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
a6ca8878
AP		 2891 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2892 return 0;
2893 }
2894 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2895
2d70c103 2896 memset(&prm, 0, sizeof(prm));
2d70c103
NB		 2897
2898 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 2899 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2900 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2901 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2902 &cmd->se_cmd);
2d70c103
NB		 2903
2904 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2905 &full_req_cnt);
2906 if (unlikely(res != 0)) {
2d70c103
NB		 2907 return res;
2908 }
2909
2910 spin_lock_irqsave(&ha->hardware_lock, flags);
2911
ce1025cd
HM		 2912 if (xmit_type == QLA_TGT_XMIT_STATUS)
2913 vha->tgt_counters.core_qla_snd_status++;
2914 else
2915 vha->tgt_counters.core_qla_que_buf++;
2916
3bb67df5 2917 if (!vha->flags.online || cmd->reset_count != ha->chip_reset) {
b6a029e1 2918 /*
3bb67df5 2919 * Either the port is not online or this request was from
b6a029e1
AE		 2920 * previous life, just abort the processing.
2921 */
2922 cmd->state = QLA_TGT_STATE_PROCESSED;
2923 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2924 ql_dbg(ql_dbg_async, vha, 0xe101,
3bb67df5
DKU		 2925 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
2926 vha->flags.online, qla2x00_reset_active(vha),
2927 cmd->reset_count, ha->chip_reset);
b6a029e1
AE		 2928 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2929 return 0;
2930 }
2931
2d70c103
NB		 2932 /* Does F/W have an IOCBs for this request */
2933 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2934 if (unlikely(res))
2935 goto out_unmap_unlock;
2936
f83adb61
QT		 2937 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2938 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2939 else
2940 res = qlt_24xx_build_ctio_pkt(&prm, vha);
810e30bc
QT		 2941 if (unlikely(res != 0)) {
2942 vha->req->cnt += full_req_cnt;
2d70c103 2943 goto out_unmap_unlock;
810e30bc 2944 }
2d70c103
NB		 2945
2946 pkt = (struct ctio7_to_24xx *)prm.pkt;
2947
2948 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2949 pkt->u.status0.flags |=
ad950360 2950 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 2951 CTIO7_FLAGS_STATUS_MODE_0);
2952
f83adb61
QT		 2953 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2954 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2955
2956 if (prm.add_status_pkt == 0) {
2957 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2958 pkt->u.status0.scsi_status =
2959 cpu_to_le16(prm.rq_result);
2960 pkt->u.status0.residual =
2961 cpu_to_le32(prm.residual);
ad950360 2962 pkt->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2963 CTIO7_FLAGS_SEND_STATUS);
2964 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2965 pkt->u.status0.flags |=
ad950360 2966 cpu_to_le16(
2d70c103
NB		 2967 CTIO7_FLAGS_EXPLICIT_CONFORM |
2968 CTIO7_FLAGS_CONFORM_REQ);
2969 }
2970 }
2971
2972 } else {
2973 /*
2974 * We have already made sure that there is sufficient
2975 * amount of request entries to not drop HW lock in
2976 * req_pkt().
2977 */
2978 struct ctio7_to_24xx *ctio =
2979 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2980
667024a3
AE		 2981 ql_dbg(ql_dbg_io, vha, 0x305e,
2982 "Building additional status packet 0x%p.\n",
2983 ctio);
2d70c103 2984
f83adb61
QT		 2985 /*
2986 * T10Dif: ctio_crc2_to_fw overlay ontop of
2987 * ctio7_to_24xx
2988 */
2d70c103 2989 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 2990 /* reset back to CTIO7 */
2d70c103 2991 ctio->entry_count = 1;
f83adb61 2992 ctio->entry_type = CTIO_TYPE7;
2d70c103 2993 ctio->dseg_count = 0;
ad950360 2994 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 2995 CTIO7_FLAGS_DATA_IN);
2996
2997 /* Real finish is ctio_m1's finish */
2998 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 2999 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3000 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3001
3002 /* qlt_24xx_init_ctio_to_isp will correct
3003 * all neccessary fields that's part of CTIO7.
3004 * There should be no residual of CTIO-CRC2 data.
3005 */
2d70c103
NB		 3006 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3007 &prm);
3008 pr_debug("Status CTIO7: %p\n", ctio);
3009 }
3010 } else
3011 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3012
3013
3014 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3015 cmd->cmd_sent_to_fw = 1;
2d70c103 3016
63163e06
HM		 3017 /* Memory Barrier */
3018 wmb();
2d70c103
NB		 3019 qla2x00_start_iocbs(vha, vha->req);
3020 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3021
3022 return 0;
3023
3024out_unmap_unlock:
f9b6721a 3025 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3026 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3027
3028 return res;
3029}
3030EXPORT_SYMBOL(qlt_xmit_response);
3031
3032int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3033{
3034 struct ctio7_to_24xx *pkt;
3035 struct scsi_qla_host *vha = cmd->vha;
3036 struct qla_hw_data *ha = vha->hw;
3037 struct qla_tgt *tgt = cmd->tgt;
3038 struct qla_tgt_prm prm;
3039 unsigned long flags;
3040 int res = 0;
3041
3042 memset(&prm, 0, sizeof(prm));
3043 prm.cmd = cmd;
3044 prm.tgt = tgt;
3045 prm.sg = NULL;
3046 prm.req_cnt = 1;
3047
3048 /* Send marker if required */
3049 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
3050 return -EIO;
3051
2d70c103
NB		 3052 /* Calculate number of entries and segments required */
3053 if (qlt_pci_map_calc_cnt(&prm) != 0)
3054 return -EAGAIN;
3055
3056 spin_lock_irqsave(&ha->hardware_lock, flags);
3057
3bb67df5 3058 if (!vha->flags.online || (cmd->reset_count != ha->chip_reset) ||
726b8548 3059 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3060 /*
3bb67df5 3061 * Either the port is not online or this request was from
b6a029e1
AE		 3062 * previous life, just abort the processing.
3063 */
3064 cmd->state = QLA_TGT_STATE_NEED_DATA;
3065 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3066 ql_dbg(ql_dbg_async, vha, 0xe102,
3bb67df5
DKU		 3067 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3068 vha->flags.online, qla2x00_reset_active(vha),
3069 cmd->reset_count, ha->chip_reset);
b6a029e1
AE		 3070 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3071 return 0;
3072 }
3073
2d70c103
NB		 3074 /* Does F/W have an IOCBs for this request */
3075 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
3076 if (res != 0)
3077 goto out_unlock_free_unmap;
f83adb61
QT		 3078 if (cmd->se_cmd.prot_op)
3079 res = qlt_build_ctio_crc2_pkt(&prm, vha);
3080 else
3081 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 3082
810e30bc
QT		 3083 if (unlikely(res != 0)) {
3084 vha->req->cnt += prm.req_cnt;
2d70c103 3085 goto out_unlock_free_unmap;
810e30bc
QT		 3086 }
3087
2d70c103 3088 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3089 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3090 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3091
3092 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3093 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 3094
3095 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3096 cmd->cmd_sent_to_fw = 1;
2d70c103 3097
63163e06
HM		 3098 /* Memory Barrier */
3099 wmb();
2d70c103
NB		 3100 qla2x00_start_iocbs(vha, vha->req);
3101 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3102
3103 return res;
3104
3105out_unlock_free_unmap:
f9b6721a 3106 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3107 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3108
3109 return res;
3110}
3111EXPORT_SYMBOL(qlt_rdy_to_xfer);
3112
f83adb61
QT		 3113
3114/*
3115 * Checks the guard or meta-data for the type of error
3116 * detected by the HBA.
3117 */
3118static inline int
3119qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
3120 struct ctio_crc_from_fw *sts)
3121{
3122 uint8_t *ap = &sts->actual_dif[0];
3123 uint8_t *ep = &sts->expected_dif[0];
3124 uint32_t e_ref_tag, a_ref_tag;
3125 uint16_t e_app_tag, a_app_tag;
3126 uint16_t e_guard, a_guard;
3127 uint64_t lba = cmd->se_cmd.t_task_lba;
3128
3129 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3130 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3131 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
3132
3133 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3134 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3135 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
3136
3137 ql_dbg(ql_dbg_tgt, vha, 0xe075,
3138 "iocb(s) %p Returned STATUS.\n", sts);
3139
3140 ql_dbg(ql_dbg_tgt, vha, 0xf075,
fc385045 3141 "dif check TGT cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n",
f83adb61
QT		 3142 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3143 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
3144
3145 /*
3146 * Ignore sector if:
3147 * For type 3: ref & app tag is all 'f's
3148 * For type 0,1,2: app tag is all 'f's
3149 */
3150 if ((a_app_tag == 0xffff) &&
3151 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
3152 (a_ref_tag == 0xffffffff))) {
3153 uint32_t blocks_done;
3154
3155 /* 2TB boundary case covered automatically with this */
3156 blocks_done = e_ref_tag - (uint32_t)lba + 1;
3157 cmd->se_cmd.bad_sector = e_ref_tag;
3158 cmd->se_cmd.pi_err = 0;
3159 ql_dbg(ql_dbg_tgt, vha, 0xf074,
3160 "need to return scsi good\n");
3161
3162 /* Update protection tag */
3163 if (cmd->prot_sg_cnt) {
52c82823 3164 uint32_t i, k = 0, num_ent;
f83adb61
QT		 3165 struct scatterlist *sg, *sgl;
3166
3167
3168 sgl = cmd->prot_sg;
3169
3170 /* Patch the corresponding protection tags */
3171 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
3172 num_ent = sg_dma_len(sg) / 8;
3173 if (k + num_ent < blocks_done) {
3174 k += num_ent;
3175 continue;
3176 }
f83adb61
QT		 3177 k = blocks_done;
3178 break;
3179 }
3180
3181 if (k != blocks_done) {
3182 ql_log(ql_log_warn, vha, 0xf076,
3183 "unexpected tag values tag:lba=%u:%llu)\n",
3184 e_ref_tag, (unsigned long long)lba);
3185 goto out;
3186 }
3187
3188#if 0
3189 struct sd_dif_tuple *spt;
3190 /* TODO:
3191 * This section came from initiator. Is it valid here?
3192 * should ulp be override with actual val???
3193 */
3194 spt = page_address(sg_page(sg)) + sg->offset;
3195 spt += j;
3196
3197 spt->app_tag = 0xffff;
3198 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
3199 spt->ref_tag = 0xffffffff;
3200#endif
3201 }
3202
3203 return 0;
3204 }
3205
3206 /* check guard */
3207 if (e_guard != a_guard) {
3208 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
3209 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
3210
3211 ql_log(ql_log_warn, vha, 0xe076,
3212 "Guard ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
3213 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3214 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3215 a_guard, e_guard, cmd);
3216 goto out;
3217 }
3218
3219 /* check ref tag */
3220 if (e_ref_tag != a_ref_tag) {
3221 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
3222 cmd->se_cmd.bad_sector = e_ref_tag;
3223
3224 ql_log(ql_log_warn, vha, 0xe077,
3225 "Ref Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
3226 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3227 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3228 a_guard, e_guard, cmd);
3229 goto out;
3230 }
3231
3232 /* check appl tag */
3233 if (e_app_tag != a_app_tag) {
3234 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
3235 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
3236
3237 ql_log(ql_log_warn, vha, 0xe078,
3238 "App Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
3239 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3240 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3241 a_guard, e_guard, cmd);
3242 goto out;
3243 }
3244out:
3245 return 1;
3246}
3247
3248
a6ca8878
AP		 3249/* If hardware_lock held on entry, might drop it, then reaquire */
3250/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3251static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3252 struct imm_ntfy_from_isp *ntfy)
3253{
3254 struct nack_to_isp *nack;
3255 struct qla_hw_data *ha = vha->hw;
3256 request_t *pkt;
3257 int ret = 0;
3258
3259 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3260 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3261
3262 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
3263 if (pkt == NULL) {
3264 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3265 "qla_target(%d): %s failed: unable to allocate "
3266 "request packet\n", vha->vp_idx, __func__);
3267 return -ENOMEM;
3268 }
3269
3270 pkt->entry_type = NOTIFY_ACK_TYPE;
3271 pkt->entry_count = 1;
4f060736 3272 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3273
3274 nack = (struct nack_to_isp *)pkt;
3275 nack->ox_id = ntfy->ox_id;
3276
3277 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3278 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3279 nack->u.isp24.flags = ntfy->u.isp24.flags &
3280 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3281 }
3282
3283 /* terminate */
3284 nack->u.isp24.flags |=
3285 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3286
3287 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3288 nack->u.isp24.status = ntfy->u.isp24.status;
3289 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3290 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3291 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3292 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3293 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3294 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3295
3296 qla2x00_start_iocbs(vha, vha->req);
3297 return ret;
3298}
3299
3300static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3301 struct imm_ntfy_from_isp *imm, int ha_locked)
3302{
3303 unsigned long flags = 0;
3304 int rc;
3305
3306 if (qlt_issue_marker(vha, ha_locked) < 0)
3307 return;
3308
3309 if (ha_locked) {
3310 rc = __qlt_send_term_imm_notif(vha, imm);
3311
3312#if 0 /* Todo */
3313 if (rc == -ENOMEM)
3314 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
91f42b33
BVA		 3315#else
3316 if (rc) {
3317 }
a6ca8878
AP		 3318#endif
3319 goto done;
3320 }
3321
3322 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3323 rc = __qlt_send_term_imm_notif(vha, imm);
3324
3325#if 0 /* Todo */
3326 if (rc == -ENOMEM)
3327 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3328#endif
3329
3330done:
3331 if (!ha_locked)
3332 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3333}
3334
2d70c103
NB		 3335/* If hardware_lock held on entry, might drop it, then reaquire */
3336/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3337static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
3338 struct qla_tgt_cmd *cmd,
3339 struct atio_from_isp *atio)
3340{
3341 struct ctio7_to_24xx *ctio24;
3342 struct qla_hw_data *ha = vha->hw;
3343 request_t *pkt;
3344 int ret = 0;
33a5fcee 3345 uint16_t temp;
2d70c103
NB		 3346
3347 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3348
b6a029e1 3349 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 3350 if (pkt == NULL) {
3351 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3352 "qla_target(%d): %s failed: unable to allocate "
3353 "request packet\n", vha->vp_idx, __func__);
3354 return -ENOMEM;
3355 }
3356
3357 if (cmd != NULL) {
3358 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3359 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3360 "qla_target(%d): Terminating cmd %p with "
3361 "incorrect state %d\n", vha->vp_idx, cmd,
3362 cmd->state);
3363 } else
3364 ret = 1;
3365 }
3366
ce1025cd 3367 vha->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3368 pkt->entry_count = 1;
3369 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3370
3371 ctio24 = (struct ctio7_to_24xx *)pkt;
3372 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3373 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3374 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3375 ctio24->vp_index = vha->vp_idx;
3376 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3377 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3378 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3379 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3380 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 3381 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2d70c103 3382 CTIO7_FLAGS_TERMINATE);
33a5fcee
QT		 3383 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3384 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3385
3386 /* Most likely, it isn't needed */
3387 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3388 &atio->u.isp24.fcp_cmnd.add_cdb[
3389 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3390 if (ctio24->u.status1.residual != 0)
3391 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3392
63163e06
HM		 3393 /* Memory Barrier */
3394 wmb();
2d70c103
NB		 3395 qla2x00_start_iocbs(vha, vha->req);
3396 return ret;
3397}
3398
3399static void qlt_send_term_exchange(struct scsi_qla_host *vha,
a07100e0
QT		 3400 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3401 int ul_abort)
2d70c103 3402{
6bc85dd5 3403 unsigned long flags = 0;
2d70c103
NB		 3404 int rc;
3405
3406 if (qlt_issue_marker(vha, ha_locked) < 0)
3407 return;
3408
3409 if (ha_locked) {
3410 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3411 if (rc == -ENOMEM)
3412 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3413 goto done;
3414 }
3415 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3416 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3417 if (rc == -ENOMEM)
3418 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3419
2d70c103 3420done:
a07100e0 3421 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3422 if (cmd->sg_mapped)
3423 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3424 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3425 }
6bc85dd5
HM		 3426
3427 if (!ha_locked)
3428 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3429
7b898542 3430 return;
2d70c103
NB		 3431}
3432
33e79977
QT		 3433static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3434{
3435 struct list_head free_list;
3436 struct qla_tgt_cmd *cmd, *tcmd;
3437
3438 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3439 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3440
3441 cmd = tcmd = NULL;
3442 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3443 INIT_LIST_HEAD(&free_list);
3444 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3445
3446 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3447 list_del(&cmd->cmd_list);
3448 /* This cmd was never sent to TCM. There is no need
3449 * to schedule free or call free_cmd
3450 */
3451 qlt_free_cmd(cmd);
3452 vha->hw->tgt.num_qfull_cmds_alloc--;
3453 }
3454 }
3455 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3456}
3457
3458static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3459{
3460 uint32_t total_leaked;
3461
3462 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3463
3464 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3465 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3466
3467 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3468 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3469 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3470
3471 if (IS_P3P_TYPE(vha->hw))
3472 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3473 else
3474 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3475 qla2xxx_wake_dpc(vha);
3476 }
3477
3478}
3479
a07100e0 3480int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3481{
3482 struct qla_tgt *tgt = cmd->tgt;
3483 struct scsi_qla_host *vha = tgt->vha;
3484 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3485 unsigned long flags;
7359df25
AP		 3486
3487 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3488 "qla_target(%d): terminating exchange for aborted cmd=%p "
3489 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3490 se_cmd->tag);
3491
a07100e0
QT		 3492 spin_lock_irqsave(&cmd->cmd_lock, flags);
3493 if (cmd->aborted) {
3494 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3495 /*
3496 * It's normal to see 2 calls in this path:
3497 * 1) XFER Rdy completion + CMD_T_ABORT
3498 * 2) TCM TMR - drain_state_list
3499 */
3500 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
3501 "multiple abort. %p transport_state %x, t_state %x,"
3502 " se_cmd_flags %x \n", cmd, cmd->se_cmd.transport_state,
3503 cmd->se_cmd.t_state,cmd->se_cmd.se_cmd_flags);
3504 return EIO;
3505 }
193b50b9 3506 cmd->aborted = 1;
1eb42f96 3507 cmd->trc_flags |= TRC_ABORT;
a07100e0 3508 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3509
a07100e0
QT		 3510 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1);
3511 return 0;
7359df25
AP		 3512}
3513EXPORT_SYMBOL(qlt_abort_cmd);
3514
2d70c103
NB		 3515void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3516{
5d964837 3517 struct fc_port *sess = cmd->sess;
51a07f84 3518
f83adb61
QT		 3519 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3520 "%s: se_cmd[%p] ox_id %04x\n",
3521 __func__, &cmd->se_cmd,
3522 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3523
e07f8f65
SK		 3524 BUG_ON(cmd->cmd_in_wq);
3525
a07100e0
QT		 3526 if (cmd->sg_mapped)
3527 qlt_unmap_sg(cmd->vha, cmd);
3528
33e79977
QT		 3529 if (!cmd->q_full)
3530 qlt_decr_num_pend_cmds(cmd->vha);
3531
f83adb61 3532 BUG_ON(cmd->sg_mapped);
e07f8f65 3533 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3534 if (unlikely(cmd->free_sg))
3535 kfree(cmd->sg);
51a07f84
NB		 3536
3537 if (!sess || !sess->se_sess) {
3538 WARN_ON(1);
3539 return;
3540 }
e07f8f65 3541 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3542 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3543}
3544EXPORT_SYMBOL(qlt_free_cmd);
3545
2d70c103
NB		 3546/*
3547 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3548 */
3549static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
3550 struct qla_tgt_cmd *cmd, uint32_t status)
3551{
3552 int term = 0;
3553
3554 if (ctio != NULL) {
3555 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3556 term = !(c->flags &
ad950360 3557 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3558 } else
3559 term = 1;
3560
3561 if (term)
a07100e0 3562 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
2d70c103
NB		 3563
3564 return term;
3565}
3566
3567/* ha->hardware_lock supposed to be held on entry */
3568static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
3569 uint32_t handle)
3570{
3571 struct qla_hw_data *ha = vha->hw;
3572
3573 handle--;
3574 if (ha->tgt.cmds[handle] != NULL) {
3575 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
3576 ha->tgt.cmds[handle] = NULL;
3577 return cmd;
3578 } else
3579 return NULL;
3580}
3581
3582/* ha->hardware_lock supposed to be held on entry */
3583static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3584 uint32_t handle, void *ctio)
3585{
3586 struct qla_tgt_cmd *cmd = NULL;
3587
3588 /* Clear out internal marks */
3589 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
3590 CTIO_INTERMEDIATE_HANDLE_MARK);
3591
3592 if (handle != QLA_TGT_NULL_HANDLE) {
667024a3 3593 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
2d70c103 3594 return NULL;
667024a3 3595
2d70c103 3596 /* handle-1 is actually used */
8d93f550 3597 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 3598 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3599 "qla_target(%d): Wrong handle %x received\n",
3600 vha->vp_idx, handle);
3601 return NULL;
3602 }
3603 cmd = qlt_get_cmd(vha, handle);
3604 if (unlikely(cmd == NULL)) {
3605 ql_dbg(ql_dbg_tgt, vha, 0xe053,
3606 "qla_target(%d): Suspicious: unable to "
3607 "find the command with handle %x\n", vha->vp_idx,
3608 handle);
3609 return NULL;
3610 }
3611 } else if (ctio != NULL) {
3612 /* We can't get loop ID from CTIO7 */
3613 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3614 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3615 "support NULL handles\n", vha->vp_idx);
3616 return NULL;
3617 }
3618
3619 return cmd;
3620}
3621
c0cb4496
AE		 3622/* hardware_lock should be held by caller. */
3623static void
3624qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3625{
3626 struct qla_hw_data *ha = vha->hw;
3627 uint32_t handle;
3628
3629 if (cmd->sg_mapped)
3630 qlt_unmap_sg(vha, cmd);
3631
3632 handle = qlt_make_handle(vha);
3633
3634 /* TODO: fix debug message type and ids. */
3635 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3636 ql_dbg(ql_dbg_io, vha, 0xff00,
3637 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
3638 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3639 cmd->write_data_transferred = 0;
3640 cmd->state = QLA_TGT_STATE_DATA_IN;
3641
3642 ql_dbg(ql_dbg_io, vha, 0xff01,
3643 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
3644
3645 ha->tgt.tgt_ops->handle_data(cmd);
3646 return;
c0cb4496
AE		 3647 } else {
3648 ql_dbg(ql_dbg_io, vha, 0xff03,
3649 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
3650 cmd->state);
3651 dump_stack();
3652 }
3653
1eb42f96 3654 cmd->trc_flags |= TRC_FLUSH;
c0cb4496
AE		 3655 ha->tgt.tgt_ops->free_cmd(cmd);
3656}
3657
3658void
3659qlt_host_reset_handler(struct qla_hw_data *ha)
3660{
3661 struct qla_tgt_cmd *cmd;
3662 unsigned long flags;
3663 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
3664 scsi_qla_host_t *vha = NULL;
3665 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
3666 uint32_t i;
3667
3668 if (!base_vha->hw->tgt.tgt_ops)
3669 return;
3670
3671 if (!tgt || qla_ini_mode_enabled(base_vha)) {
3672 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
3673 "Target mode disabled\n");
3674 return;
3675 }
3676
3677 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
3678 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
3679 base_vha->dpc_flags);
3680
3681 spin_lock_irqsave(&ha->hardware_lock, flags);
3682 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
3683 cmd = qlt_get_cmd(base_vha, i);
3684 if (!cmd)
3685 continue;
3686 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
3687 vha = cmd->vha;
3688 qlt_abort_cmd_on_host_reset(vha, cmd);
3689 }
3690 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3691}
3692
3693
2d70c103
NB		 3694/*
3695 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3696 */
3697static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
3698 uint32_t status, void *ctio)
3699{
3700 struct qla_hw_data *ha = vha->hw;
3701 struct se_cmd *se_cmd;
2d70c103
NB		 3702 struct qla_tgt_cmd *cmd;
3703
2d70c103
NB		 3704 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3705 /* That could happen only in case of an error/reset/abort */
3706 if (status != CTIO_SUCCESS) {
3707 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3708 "Intermediate CTIO received"
3709 " (status %x)\n", status);
3710 }
3711 return;
3712 }
3713
3714 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 3715 if (cmd == NULL)
2d70c103 3716 return;
092e1dc3 3717
2d70c103 3718 se_cmd = &cmd->se_cmd;
d564a372 3719 cmd->cmd_sent_to_fw = 0;
2d70c103 3720
f9b6721a 3721 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3722
3723 if (unlikely(status != CTIO_SUCCESS)) {
3724 switch (status & 0xFFFF) {
3725 case CTIO_LIP_RESET:
3726 case CTIO_TARGET_RESET:
3727 case CTIO_ABORTED:
7b898542 3728 /* driver request abort via Terminate exchange */
2d70c103
NB		 3729 case CTIO_TIMEOUT:
3730 case CTIO_INVALID_RX_ID:
3731 /* They are OK */
3732 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3733 "qla_target(%d): CTIO with "
3734 "status %#x received, state %x, se_cmd %p, "
3735 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3736 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3737 status, cmd->state, se_cmd);
3738 break;
3739
3740 case CTIO_PORT_LOGGED_OUT:
3741 case CTIO_PORT_UNAVAILABLE:
71cdc079 3742 {
dacb5822
HM		 3743 int logged_out =
3744 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3745
2d70c103 3746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3747 "qla_target(%d): CTIO with %s status %x "
2d70c103 3748 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3749 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3750 status, cmd->state, se_cmd);
2d70c103 3751
71cdc079
AP		 3752 if (logged_out && cmd->sess) {
3753 /*
3754 * Session is already logged out, but we need
3755 * to notify initiator, who's not aware of this
3756 */
3757 cmd->sess->logout_on_delete = 0;
3758 cmd->sess->send_els_logo = 1;
726b8548
QT		 3759 ql_dbg(ql_dbg_disc, vha, 0xffff,
3760 "%s %d %8phC post del sess\n",
3761 __func__, __LINE__, cmd->sess->port_name);
3762
3763 qlt_schedule_sess_for_deletion_lock(cmd->sess);
71cdc079
AP		 3764 }
3765 break;
3766 }
f83adb61
QT		 3767 case CTIO_DIF_ERROR: {
3768 struct ctio_crc_from_fw *crc =
3769 (struct ctio_crc_from_fw *)ctio;
3770 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3771 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
3772 vha->vp_idx, status, cmd->state, se_cmd,
3773 *((u64 *)&crc->actual_dif[0]),
3774 *((u64 *)&crc->expected_dif[0]));
3775
3776 if (qlt_handle_dif_error(vha, cmd, ctio)) {
3777 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3778 /* scsi Write/xfer rdy complete */
3779 goto skip_term;
3780 } else {
3781 /* scsi read/xmit respond complete
3782 * call handle dif to send scsi status
3783 * rather than terminate exchange.
3784 */
3785 cmd->state = QLA_TGT_STATE_PROCESSED;
3786 ha->tgt.tgt_ops->handle_dif_err(cmd);
3787 return;
3788 }
3789 } else {
3790 /* Need to generate a SCSI good completion.
3791 * because FW did not send scsi status.
3792 */
3793 status = 0;
3794 goto skip_term;
3795 }
3796 break;
3797 }
2d70c103
NB		 3798 default:
3799 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3800 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3801 vha->vp_idx, status, cmd->state, se_cmd);
3802 break;
3803 }
3804
7b898542 3805
193b50b9 3806 /* "cmd->aborted" means
7b898542
QT		 3807 * cmd is already aborted/terminated, we don't
3808 * need to terminate again. The exchange is already
3809 * cleaned up/freed at FW level. Just cleanup at driver
3810 * level.
3811 */
3812 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3813 (!cmd->aborted)) {
1eb42f96 3814 cmd->trc_flags |= TRC_CTIO_ERR;
2d70c103
NB		 3815 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3816 return;
7b898542 3817 }
2d70c103 3818 }
f83adb61 3819skip_term:
2d70c103
NB		 3820
3821 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 3822 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 3823 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3824 cmd->state = QLA_TGT_STATE_DATA_IN;
3825
52c82823 3826 if (status == CTIO_SUCCESS)
2d70c103
NB		 3827 cmd->write_data_transferred = 1;
3828
2d70c103
NB		 3829 ha->tgt.tgt_ops->handle_data(cmd);
3830 return;
193b50b9 3831 } else if (cmd->aborted) {
1eb42f96 3832 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 3833 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3834 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3835 } else {
1eb42f96 3836 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 3837 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3838 "qla_target(%d): A command in state (%d) should "
3839 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3840 }
3841
7b898542 3842 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3843 !cmd->aborted) {
2d70c103
NB		 3844 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3845 dump_stack();
3846 }
3847
3848 ha->tgt.tgt_ops->free_cmd(cmd);
3849}
3850
2d70c103
NB		 3851static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3852 uint8_t task_codes)
3853{
3854 int fcp_task_attr;
3855
3856 switch (task_codes) {
3857 case ATIO_SIMPLE_QUEUE:
68d81f40 3858 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3859 break;
3860 case ATIO_HEAD_OF_QUEUE:
68d81f40 3861 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3862 break;
3863 case ATIO_ORDERED_QUEUE:
68d81f40 3864 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3865 break;
3866 case ATIO_ACA_QUEUE:
68d81f40 3867 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3868 break;
3869 case ATIO_UNTAGGED:
68d81f40 3870 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3871 break;
3872 default:
3873 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3874 "qla_target: unknown task code %x, use ORDERED instead\n",
3875 task_codes);
68d81f40 3876 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3877 break;
3878 }
3879
3880 return fcp_task_attr;
3881}
3882
5d964837 3883static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 3884 uint8_t *);
3885/*
3886 * Process context for I/O path into tcm_qla2xxx code
3887 */
51a07f84 3888static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3889{
2d70c103
NB		 3890 scsi_qla_host_t *vha = cmd->vha;
3891 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3892 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 3893 struct fc_port *sess = cmd->sess;
2d70c103
NB		 3894 struct atio_from_isp *atio = &cmd->atio;
3895 unsigned char *cdb;
3896 unsigned long flags;
3897 uint32_t data_length;
3898 int ret, fcp_task_attr, data_dir, bidi = 0;
3899
e07f8f65 3900 cmd->cmd_in_wq = 0;
1eb42f96 3901 cmd->trc_flags |= TRC_DO_WORK;
2d70c103
NB		 3902 if (tgt->tgt_stop)
3903 goto out_term;
3904
193b50b9 3905 if (cmd->aborted) {
8b2f5ff3
SN		 3906 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
3907 "cmd with tag %u is aborted\n",
3908 cmd->atio.u.isp24.exchange_addr);
3909 goto out_term;
3910 }
3911
a07100e0 3912 spin_lock_init(&cmd->cmd_lock);
2d70c103 3913 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 3914 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 3915 cmd->unpacked_lun = scsilun_to_int(
3916 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3917
3918 if (atio->u.isp24.fcp_cmnd.rddata &&
3919 atio->u.isp24.fcp_cmnd.wrdata) {
3920 bidi = 1;
3921 data_dir = DMA_TO_DEVICE;
3922 } else if (atio->u.isp24.fcp_cmnd.rddata)
3923 data_dir = DMA_FROM_DEVICE;
3924 else if (atio->u.isp24.fcp_cmnd.wrdata)
3925 data_dir = DMA_TO_DEVICE;
3926 else
3927 data_dir = DMA_NONE;
3928
3929 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3930 atio->u.isp24.fcp_cmnd.task_attr);
3931 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3932 &atio->u.isp24.fcp_cmnd.add_cdb[
3933 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3934
51a07f84
NB		 3935 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3936 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 3937 if (ret != 0)
3938 goto out_term;
3939 /*
3940 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3941 */
7560151b 3942 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 3943 ha->tgt.tgt_ops->put_sess(sess);
7560151b 3944 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 3945 return;
3946
3947out_term:
667024a3 3948 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 3949 /*
fae9eaf8
RD		 3950 * cmd has not sent to target yet, so pass NULL as the second
3951 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 3952 */
1eb42f96 3953 cmd->trc_flags |= TRC_DO_WORK_ERR;
2d70c103 3954 spin_lock_irqsave(&ha->hardware_lock, flags);
a07100e0 3955 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0);
33e79977
QT		 3956
3957 qlt_decr_num_pend_cmds(vha);
51a07f84 3958 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
51a07f84 3959 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7560151b
QT		 3960
3961 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 3962 ha->tgt.tgt_ops->put_sess(sess);
7560151b 3963 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 3964}
3965
3966static void qlt_do_work(struct work_struct *work)
3967{
3968 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 3969 scsi_qla_host_t *vha = cmd->vha;
3970 unsigned long flags;
3971
3972 spin_lock_irqsave(&vha->cmd_list_lock, flags);
3973 list_del(&cmd->cmd_list);
3974 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 3975
3976 __qlt_do_work(cmd);
3977}
3978
3979static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 3980 struct fc_port *sess,
51a07f84
NB		 3981 struct atio_from_isp *atio)
3982{
3983 struct se_session *se_sess = sess->se_sess;
3984 struct qla_tgt_cmd *cmd;
3985 int tag;
3986
3987 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3988 if (tag < 0)
3989 return NULL;
3990
3991 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3992 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3993
3994 memcpy(&cmd->atio, atio, sizeof(*atio));
3995 cmd->state = QLA_TGT_STATE_NEW;
3996 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 3997 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 3998 cmd->vha = vha;
3999 cmd->se_cmd.map_tag = tag;
4000 cmd->sess = sess;
4001 cmd->loop_id = sess->loop_id;
4002 cmd->conf_compl_supported = sess->conf_compl_supported;
4003
1eb42f96 4004 cmd->trc_flags = 0;
9fce1254
KS		 4005 cmd->jiffies_at_alloc = get_jiffies_64();
4006
4007 cmd->reset_count = vha->hw->chip_reset;
4008
51a07f84
NB		 4009 return cmd;
4010}
4011
4012static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
4013 uint16_t);
4014
4015static void qlt_create_sess_from_atio(struct work_struct *work)
4016{
4017 struct qla_tgt_sess_op *op = container_of(work,
4018 struct qla_tgt_sess_op, work);
4019 scsi_qla_host_t *vha = op->vha;
4020 struct qla_hw_data *ha = vha->hw;
5d964837 4021 struct fc_port *sess;
51a07f84
NB		 4022 struct qla_tgt_cmd *cmd;
4023 unsigned long flags;
4024 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
4025
8b2f5ff3
SN		 4026 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4027 list_del(&op->cmd_list);
4028 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4029
4030 if (op->aborted) {
4031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
4032 "sess_op with tag %u is aborted\n",
4033 op->atio.u.isp24.exchange_addr);
4034 goto out_term;
4035 }
4036
51a07f84 4037 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
8b2f5ff3
SN		 4038 "qla_target(%d): Unable to find wwn login"
4039 " (s_id %x:%x:%x), trying to create it manually\n",
4040 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
51a07f84
NB		 4041
4042 if (op->atio.u.raw.entry_count > 1) {
4043 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
8b2f5ff3 4044 "Dropping multy entry atio %p\n", &op->atio);
51a07f84
NB		 4045 goto out_term;
4046 }
4047
51a07f84
NB		 4048 sess = qlt_make_local_sess(vha, s_id);
4049 /* sess has an extra creation ref. */
51a07f84
NB		 4050
4051 if (!sess)
4052 goto out_term;
4053 /*
4054 * Now obtain a pre-allocated session tag using the original op->atio
4055 * packet header, and dispatch into __qlt_do_work() using the existing
4056 * process context.
4057 */
4058 cmd = qlt_get_tag(vha, sess, &op->atio);
4059 if (!cmd) {
4060 spin_lock_irqsave(&ha->hardware_lock, flags);
4061 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
5d964837 4062 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 4063 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4064 kfree(op);
4065 return;
4066 }
726b8548 4067
51a07f84 4068 /*
e3dc0e31 4069 * __qlt_do_work() will call qlt_put_sess() to release
51a07f84
NB		 4070 * the extra reference taken above by qlt_make_local_sess()
4071 */
4072 __qlt_do_work(cmd);
4073 kfree(op);
4074 return;
51a07f84
NB		 4075out_term:
4076 spin_lock_irqsave(&ha->hardware_lock, flags);
a07100e0 4077 qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0);
08234e3a 4078 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84 4079 kfree(op);
2d70c103
NB		 4080}
4081
4082/* ha->hardware_lock supposed to be held on entry */
4083static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4084 struct atio_from_isp *atio)
4085{
51a07f84 4086 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4087 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4088 struct fc_port *sess;
2d70c103 4089 struct qla_tgt_cmd *cmd;
5d964837 4090 unsigned long flags;
2d70c103
NB		 4091
4092 if (unlikely(tgt->tgt_stop)) {
667024a3 4093 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 4094 "New command while device %p is shutting down\n", tgt);
4095 return -EFAULT;
4096 }
4097
51a07f84
NB		 4098 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4099 if (unlikely(!sess)) {
4100 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
4101 GFP_ATOMIC);
4102 if (!op)
4103 return -ENOMEM;
4104
4105 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 4106 op->vha = vha;
8b2f5ff3
SN		 4107
4108 spin_lock(&vha->cmd_list_lock);
4109 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
4110 spin_unlock(&vha->cmd_list_lock);
4111
51a07f84
NB		 4112 INIT_WORK(&op->work, qlt_create_sess_from_atio);
4113 queue_work(qla_tgt_wq, &op->work);
4114 return 0;
4115 }
e52a8b45
AP		 4116
4117 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4118 * session deletion, but it's still in sess_del_work wq */
726b8548 4119 if (sess->deleted) {
e52a8b45
AP		 4120 ql_dbg(ql_dbg_io, vha, 0x3061,
4121 "New command while old session %p is being deleted\n",
4122 sess);
4123 return -EFAULT;
4124 }
4125
51a07f84
NB		 4126 /*
4127 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4128 */
726b8548
QT		 4129 if (!kref_get_unless_zero(&sess->sess_kref)) {
4130 ql_dbg(ql_dbg_tgt, vha, 0xffff,
4131 "%s: kref_get fail, %8phC oxid %x \n",
4132 __func__, sess->port_name,
4133 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4134 return -EFAULT;
4135 }
51a07f84
NB		 4136
4137 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4138 if (!cmd) {
667024a3 4139 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4140 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837
QT		 4141 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4142 ha->tgt.tgt_ops->put_sess(sess);
4143 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4144 return -ENOMEM;
4145 }
4146
e07f8f65 4147 cmd->cmd_in_wq = 1;
1eb42f96 4148 cmd->trc_flags |= TRC_NEW_CMD;
5327c7db
QT		 4149 cmd->se_cmd.cpuid = ha->msix_count ?
4150 ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND;
8b2f5ff3 4151
726b8548 4152 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4153 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4154 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4155
2d70c103 4156 INIT_WORK(&cmd->work, qlt_do_work);
fb3269ba 4157 if (ha->msix_count) {
fb3269ba
QT		 4158 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4159 queue_work_on(smp_processor_id(), qla_tgt_wq,
4160 &cmd->work);
4161 else
4162 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4163 &cmd->work);
4164 } else {
4165 queue_work(qla_tgt_wq, &cmd->work);
4166 }
2d70c103
NB		 4167 return 0;
4168
4169}
4170
4171/* ha->hardware_lock supposed to be held on entry */
5d964837 4172static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4173 int fn, void *iocb, int flags)
4174{
4175 struct scsi_qla_host *vha = sess->vha;
4176 struct qla_hw_data *ha = vha->hw;
4177 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4178 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103 4179 int res;
2d70c103
NB		 4180
4181 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4182 if (!mcmd) {
4183 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4184 "qla_target(%d): Allocation of management "
4185 "command failed, some commands and their data could "
4186 "leak\n", vha->vp_idx);
4187 return -ENOMEM;
4188 }
4189 memset(mcmd, 0, sizeof(*mcmd));
4190 mcmd->sess = sess;
4191
4192 if (iocb) {
4193 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4194 sizeof(mcmd->orig_iocb.imm_ntfy));
4195 }
4196 mcmd->tmr_func = fn;
4197 mcmd->flags = flags;
b6a029e1 4198 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 4199
4200 switch (fn) {
2d70c103 4201 case QLA_TGT_LUN_RESET:
be92fc3f
QT		 4202 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4203 break;
2d70c103
NB		 4204 }
4205
be92fc3f 4206 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
2d70c103
NB		 4207 if (res != 0) {
4208 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4209 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4210 sess->vha->vp_idx, res);
4211 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4212 return -EFAULT;
4213 }
4214
4215 return 0;
4216}
4217
4218/* ha->hardware_lock supposed to be held on entry */
4219static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4220{
4221 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4222 struct qla_hw_data *ha = vha->hw;
4223 struct qla_tgt *tgt;
5d964837 4224 struct fc_port *sess;
2d70c103 4225 uint32_t lun, unpacked_lun;
52c82823 4226 int fn;
7560151b 4227 unsigned long flags;
2d70c103 4228
0e8cd71c 4229 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4230
4231 lun = a->u.isp24.fcp_cmnd.lun;
2d70c103 4232 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4233
4234 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4235 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4236 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4237 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4238
2d70c103
NB		 4239 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4240
4241 if (!sess) {
4242 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4243 "qla_target(%d): task mgmt fn 0x%x for "
4244 "non-existant session\n", vha->vp_idx, fn);
4245 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4246 sizeof(struct atio_from_isp));
4247 }
4248
726b8548 4249 if (sess->deleted)
e52a8b45
AP		 4250 return -EFAULT;
4251
2d70c103
NB		 4252 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4253}
4254
4255/* ha->hardware_lock supposed to be held on entry */
4256static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4257 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4258{
4259 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4260 struct qla_hw_data *ha = vha->hw;
4261 struct qla_tgt_mgmt_cmd *mcmd;
4262 uint32_t lun, unpacked_lun;
4263 int rc;
4264
4265 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4266 if (mcmd == NULL) {
4267 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4268 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4269 vha->vp_idx, __func__);
4270 return -ENOMEM;
4271 }
4272 memset(mcmd, 0, sizeof(*mcmd));
4273
4274 mcmd->sess = sess;
4275 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4276 sizeof(mcmd->orig_iocb.imm_ntfy));
4277
4278 lun = a->u.isp24.fcp_cmnd.lun;
4279 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
80187f8e 4280 mcmd->reset_count = vha->hw->chip_reset;
be92fc3f 4281 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
2d70c103 4282
be92fc3f 4283 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4284 le16_to_cpu(iocb->u.isp2x.seq_id));
4285 if (rc != 0) {
4286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4287 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4288 vha->vp_idx, rc);
4289 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4290 return -EFAULT;
4291 }
4292
4293 return 0;
4294}
4295
4296/* ha->hardware_lock supposed to be held on entry */
4297static int qlt_abort_task(struct scsi_qla_host *vha,
4298 struct imm_ntfy_from_isp *iocb)
4299{
4300 struct qla_hw_data *ha = vha->hw;
5d964837 4301 struct fc_port *sess;
2d70c103 4302 int loop_id;
7560151b 4303 unsigned long flags;
2d70c103
NB		 4304
4305 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4306
7560151b 4307 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4308 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4309 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4310
2d70c103
NB		 4311 if (sess == NULL) {
4312 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4313 "qla_target(%d): task abort for unexisting "
4314 "session\n", vha->vp_idx);
0e8cd71c 4315 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4316 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4317 }
4318
4319 return __qlt_abort_task(vha, iocb, sess);
4320}
4321
a6ca8878
AP		 4322void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4323{
726b8548
QT		 4324 if (rc != MBS_COMMAND_COMPLETE) {
4325 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4326 "%s: se_sess %p / sess %p from"
4327 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4328 " LOGO failed: %#x\n",
4329 __func__,
4330 fcport->se_sess,
4331 fcport,
4332 fcport->port_name, fcport->loop_id,
4333 fcport->d_id.b.domain, fcport->d_id.b.area,
4334 fcport->d_id.b.al_pa, rc);
4335 }
4336
4337 fcport->logout_completed = 1;
a6ca8878
AP		 4338}
4339
a6ca8878
AP		 4340/*
4341* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4342*
4343* Schedules sessions with matching port_id/loop_id but different wwn for
4344* deletion. Returns existing session with matching wwn if present.
4345* Null otherwise.
4346*/
726b8548
QT		 4347struct fc_port *
4348qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4349 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4350{
5d964837 4351 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4352 uint64_t other_wwn;
4353
b7bd104e
AP		 4354 *conflict_sess = NULL;
4355
5d964837 4356 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4357
4358 other_wwn = wwn_to_u64(other_sess->port_name);
4359
4360 if (wwn == other_wwn) {
4361 WARN_ON(sess);
4362 sess = other_sess;
4363 continue;
4364 }
4365
4366 /* find other sess with nport_id collision */
37cacc0a 4367 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4368 if (loop_id != other_sess->loop_id) {
726b8548 4369 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4370 "Invalidating sess %p loop_id %d wwn %llx.\n",
4371 other_sess, other_sess->loop_id, other_wwn);
4372
4373 /*
4374 * logout_on_delete is set by default, but another
4375 * session that has the same s_id/loop_id combo
4376 * might have cleared it when requested this session
4377 * deletion, so don't touch it
4378 */
4379 qlt_schedule_sess_for_deletion(other_sess, true);
4380 } else {
4381 /*
4382 * Another wwn used to have our s_id/loop_id
b7bd104e 4383 * kill the session, but don't free the loop_id
a6ca8878 4384 */
726b8548
QT		 4385 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff,
4386 "Invalidating sess %p loop_id %d wwn %llx.\n",
4387 other_sess, other_sess->loop_id, other_wwn);
4388
4389
b7bd104e
AP		 4390 other_sess->keep_nport_handle = 1;
4391 *conflict_sess = other_sess;
a6ca8878
AP		 4392 qlt_schedule_sess_for_deletion(other_sess,
4393 true);
4394 }
4395 continue;
4396 }
4397
4398 /* find other sess with nport handle collision */
726b8548
QT		 4399 if ((loop_id == other_sess->loop_id) &&
4400 (loop_id != FC_NO_LOOP_ID)) {
4401 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4402 "Invalidating sess %p loop_id %d wwn %llx.\n",
4403 other_sess, other_sess->loop_id, other_wwn);
4404
4405 /* Same loop_id but different s_id
4406 * Ok to kill and logout */
4407 qlt_schedule_sess_for_deletion(other_sess, true);
4408 }
4409 }
4410
4411 return sess;
4412}
4413
daddf5cf
AP		 4414/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4415static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4416{
4417 struct qla_tgt_sess_op *op;
4418 struct qla_tgt_cmd *cmd;
4419 uint32_t key;
4420 int count = 0;
4421
4422 key = (((u32)s_id->b.domain << 16) |
4423 ((u32)s_id->b.area << 8) |
4424 ((u32)s_id->b.al_pa));
4425
4426 spin_lock(&vha->cmd_list_lock);
4427 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4428 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4429
daddf5cf
AP		 4430 if (op_key == key) {
4431 op->aborted = true;
4432 count++;
4433 }
4434 }
41dc529a
QT		 4435
4436 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4437 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4438 if (op_key == key) {
4439 op->aborted = true;
4440 count++;
4441 }
4442 }
4443
daddf5cf
AP		 4444 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4445 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4446 if (cmd_key == key) {
193b50b9 4447 cmd->aborted = 1;
daddf5cf
AP		 4448 count++;
4449 }
4450 }
4451 spin_unlock(&vha->cmd_list_lock);
4452
4453 return count;
4454}
4455
2d70c103
NB		 4456/*
4457 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4458 */
4459static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4460 struct imm_ntfy_from_isp *iocb)
4461{
a6ca8878 4462 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4463 struct qla_hw_data *ha = vha->hw;
5d964837 4464 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4465 uint64_t wwn;
4466 port_id_t port_id;
4467 uint16_t loop_id;
4468 uint16_t wd3_lo;
2d70c103 4469 int res = 0;
5d964837 4470 struct qlt_plogi_ack_t *pla;
7560151b 4471 unsigned long flags;
2d70c103 4472
a6ca8878
AP		 4473 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4474
4475 port_id.b.domain = iocb->u.isp24.port_id[2];
4476 port_id.b.area = iocb->u.isp24.port_id[1];
4477 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4478 port_id.b.rsvd_1 = 0;
4479
4480 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4481
726b8548
QT		 4482 ql_dbg(ql_dbg_disc, vha, 0xf026,
4483 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4484 vha->vp_idx, iocb->u.isp24.port_id[2],
4485 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4486 iocb->u.isp24.status_subcode, loop_id,
4487 iocb->u.isp24.port_name);
2d70c103 4488
a6ca8878
AP		 4489 /* res = 1 means ack at the end of thread
4490 * res = 0 means ack async/later.
4491 */
2d70c103
NB		 4492 switch (iocb->u.isp24.status_subcode) {
4493 case ELS_PLOGI:
a6ca8878 4494
daddf5cf
AP		 4495 /* Mark all stale commands in qla_tgt_wq for deletion */
4496 abort_cmds_for_s_id(vha, &port_id);
4497
7560151b
QT		 4498 if (wwn) {
4499 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4500 sess = qlt_find_sess_invalidate_other(vha, wwn,
4501 port_id, loop_id, &conflict_sess);
7560151b
QT		 4502 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4503 }
a6ca8878 4504
726b8548 4505 if (IS_SW_RESV_ADDR(port_id)) {
a6ca8878
AP		 4506 res = 1;
4507 break;
4508 }
4509
b7bd104e
AP		 4510 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4511 if (!pla) {
a6ca8878 4512 qlt_send_term_imm_notif(vha, iocb, 1);
a6ca8878
AP		 4513 break;
4514 }
4515
4516 res = 0;
4517
726b8548
QT		 4518 if (conflict_sess) {
4519 conflict_sess->login_gen++;
b7bd104e 4520 qlt_plogi_ack_link(vha, pla, conflict_sess,
726b8548
QT		 4521 QLT_PLOGI_LINK_CONFLICT);
4522 }
a6ca8878 4523
726b8548
QT		 4524 if (!sess) {
4525 pla->ref_count++;
4526 qla24xx_post_newsess_work(vha, &port_id,
4527 iocb->u.isp24.port_name, pla);
4528 res = 0;
b7bd104e 4529 break;
726b8548 4530 }
b7bd104e
AP		 4531
4532 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
726b8548
QT		 4533 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4534 sess->d_id = port_id;
4535 sess->login_gen++;
4536
4537 switch (sess->disc_state) {
4538 case DSC_DELETED:
4539 qlt_plogi_ack_unref(vha, pla);
4540 break;
4541
4542 default:
4543 /*
4544 * Under normal circumstances we want to release nport handle
4545 * during LOGO process to avoid nport handle leaks inside FW.
4546 * The exception is when LOGO is done while another PLOGI with
4547 * the same nport handle is waiting as might be the case here.
4548 * Note: there is always a possibily of a race where session
4549 * deletion has already started for other reasons (e.g. ACL
4550 * removal) and now PLOGI arrives:
4551 * 1. if PLOGI arrived in FW after nport handle has been freed,
4552 * FW must have assigned this PLOGI a new/same handle and we
4553 * can proceed ACK'ing it as usual when session deletion
4554 * completes.
4555 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4556 * bit reached it, the handle has now been released. We'll
4557 * get an error when we ACK this PLOGI. Nothing will be sent
4558 * back to initiator. Initiator should eventually retry
4559 * PLOGI and situation will correct itself.
4560 */
4561 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4562 (sess->d_id.b24 == port_id.b24));
4563
4564 ql_dbg(ql_dbg_disc, vha, 0xffff,
4565 "%s %d %8phC post del sess\n",
4566 __func__, __LINE__, sess->port_name);
4567
4568
4569 qlt_schedule_sess_for_deletion_lock(sess);
4570 break;
4571 }
4572
a6ca8878
AP		 4573 break;
4574
2d70c103 4575 case ELS_PRLI:
a6ca8878
AP		 4576 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4577
7560151b
QT		 4578 if (wwn) {
4579 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4580 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4581 loop_id, &conflict_sess);
7560151b
QT		 4582 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4583 }
b7bd104e
AP		 4584
4585 if (conflict_sess) {
4586 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4587 "PRLI with conflicting sess %p port %8phC\n",
4588 conflict_sess, conflict_sess->port_name);
4589 qlt_send_term_imm_notif(vha, iocb, 1);
4590 res = 0;
4591 break;
4592 }
a6ca8878
AP		 4593
4594 if (sess != NULL) {
726b8548 4595 if (sess->fw_login_state == DSC_LS_PLOGI_PEND) {
a6ca8878
AP		 4596 /*
4597 * Impatient initiator sent PRLI before last
4598 * PLOGI could finish. Will force him to re-try,
4599 * while last one finishes.
4600 */
df673274 4601 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4602 "sess %p PRLI received, before plogi ack.\n",
4603 sess);
4604 qlt_send_term_imm_notif(vha, iocb, 1);
4605 res = 0;
4606 break;
4607 }
4608
4609 /*
4610 * This shouldn't happen under normal circumstances,
4611 * since we have deleted the old session during PLOGI
4612 */
df673274 4613 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4614 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4615 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4616
4617 sess->local = 0;
4618 sess->loop_id = loop_id;
37cacc0a 4619 sess->d_id = port_id;
726b8548 4620 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 4621
4622 if (wd3_lo & BIT_7)
4623 sess->conf_compl_supported = 1;
4624
726b8548
QT		 4625 if ((wd3_lo & BIT_4) == 0)
4626 sess->port_type = FCT_INITIATOR;
4627 else
4628 sess->port_type = FCT_TARGET;
df673274
AP		 4629 }
4630 res = 1; /* send notify ack */
4631
4632 /* Make session global (not used in fabric mode) */
4633 if (ha->current_topology != ISP_CFG_F) {
4634 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4635 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4636 qla2xxx_wake_dpc(vha);
a6ca8878 4637 } else {
726b8548
QT		 4638 if (sess) {
4639 ql_dbg(ql_dbg_disc, vha, 0xffff,
4640 "%s %d %8phC post nack\n",
4641 __func__, __LINE__, sess->port_name);
a6ca8878 4642
726b8548
QT		 4643 qla24xx_post_nack_work(vha, sess, iocb,
4644 SRB_NACK_PRLI);
4645 res = 0;
4646 }
4647 }
a6ca8878
AP		 4648 break;
4649
41dc529a
QT		 4650
4651 case ELS_TPRLO:
4652 if (le16_to_cpu(iocb->u.isp24.flags) &
4653 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4654 loop_id = 0xFFFF;
4655 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4656 res = 1;
4657 break;
4658 }
4659 /* drop through */
2d70c103
NB		 4660 case ELS_LOGO:
4661 case ELS_PRLO:
726b8548
QT		 4662 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4663 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4664 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4665
4666 if (sess) {
4667 sess->login_gen++;
4668 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 4669 sess->logo_ack_needed = 1;
4670 memcpy(sess->iocb, iocb, IOCB_SIZE);
4671 }
4672
2d70c103 4673 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548
QT		 4674
4675 ql_dbg(ql_dbg_disc, vha, 0xffff,
4676 "%s: logo %llx res %d sess %p ",
4677 __func__, wwn, res, sess);
4678 if (res == 0) {
41dc529a
QT		 4679 /*
4680 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4681 * for LOGO_ACK & sess delete
4682 */
726b8548
QT		 4683 BUG_ON(!sess);
4684 res = 0;
4685 } else {
41dc529a 4686 /* cmd did not go to upper layer. */
726b8548
QT		 4687 if (sess) {
4688 qlt_schedule_sess_for_deletion_lock(sess);
4689 res = 0;
4690 }
4691 /* else logo will be ack */
4692 }
2d70c103
NB		 4693 break;
4694 case ELS_PDISC:
4695 case ELS_ADISC:
4696 {
0e8cd71c 4697 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4698 if (tgt->link_reinit_iocb_pending) {
4699 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4700 0, 0, 0, 0, 0, 0);
4701 tgt->link_reinit_iocb_pending = 0;
4702 }
726b8548
QT		 4703
4704 sess = qla2x00_find_fcport_by_wwpn(vha,
4705 iocb->u.isp24.port_name, 1);
4706 if (sess) {
4707 ql_dbg(ql_dbg_disc, vha, 0xffff,
4708 "sess %p lid %d|%d DS %d LS %d\n",
4709 sess, sess->loop_id, loop_id,
4710 sess->disc_state, sess->fw_login_state);
4711 }
4712
2d70c103
NB		 4713 res = 1; /* send notify ack */
4714 break;
4715 }
4716
a6ca8878 4717 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4718 default:
4719 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4720 "qla_target(%d): Unsupported ELS command %x "
4721 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4722 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4723 break;
4724 }
4725
4726 return res;
4727}
4728
2d70c103
NB		 4729/*
4730 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4731 */
4732static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4733 struct imm_ntfy_from_isp *iocb)
4734{
4735 struct qla_hw_data *ha = vha->hw;
4736 uint32_t add_flags = 0;
4737 int send_notify_ack = 1;
4738 uint16_t status;
4739
4740 status = le16_to_cpu(iocb->u.isp2x.status);
4741 switch (status) {
4742 case IMM_NTFY_LIP_RESET:
4743 {
4744 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4745 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4746 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4747 iocb->u.isp24.status_subcode);
4748
4749 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4750 send_notify_ack = 0;
4751 break;
4752 }
4753
4754 case IMM_NTFY_LIP_LINK_REINIT:
4755 {
0e8cd71c 4756 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4757 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4758 "qla_target(%d): LINK REINIT (loop %#x, "
4759 "subcode %x)\n", vha->vp_idx,
4760 le16_to_cpu(iocb->u.isp24.nport_handle),
4761 iocb->u.isp24.status_subcode);
4762 if (tgt->link_reinit_iocb_pending) {
4763 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4764 0, 0, 0, 0, 0, 0);
4765 }
4766 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4767 tgt->link_reinit_iocb_pending = 1;
4768 /*
4769 * QLogic requires to wait after LINK REINIT for possible
4770 * PDISC or ADISC ELS commands
4771 */
4772 send_notify_ack = 0;
4773 break;
4774 }
4775
4776 case IMM_NTFY_PORT_LOGOUT:
4777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4778 "qla_target(%d): Port logout (loop "
4779 "%#x, subcode %x)\n", vha->vp_idx,
4780 le16_to_cpu(iocb->u.isp24.nport_handle),
4781 iocb->u.isp24.status_subcode);
4782
4783 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4784 send_notify_ack = 0;
4785 /* The sessions will be cleared in the callback, if needed */
4786 break;
4787
4788 case IMM_NTFY_GLBL_TPRLO:
4789 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4790 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4791 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4792 send_notify_ack = 0;
4793 /* The sessions will be cleared in the callback, if needed */
4794 break;
4795
4796 case IMM_NTFY_PORT_CONFIG:
4797 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4798 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4799 status);
4800 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4801 send_notify_ack = 0;
4802 /* The sessions will be cleared in the callback, if needed */
4803 break;
4804
4805 case IMM_NTFY_GLBL_LOGO:
4806 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4807 "qla_target(%d): Link failure detected\n",
4808 vha->vp_idx);
4809 /* I_T nexus loss */
4810 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4811 send_notify_ack = 0;
4812 break;
4813
4814 case IMM_NTFY_IOCB_OVERFLOW:
4815 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4816 "qla_target(%d): Cannot provide requested "
4817 "capability (IOCB overflowed the immediate notify "
4818 "resource count)\n", vha->vp_idx);
4819 break;
4820
4821 case IMM_NTFY_ABORT_TASK:
4822 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4823 "qla_target(%d): Abort Task (S %08x I %#x -> "
4824 "L %#x)\n", vha->vp_idx,
4825 le16_to_cpu(iocb->u.isp2x.seq_id),
4826 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4827 le16_to_cpu(iocb->u.isp2x.lun));
4828 if (qlt_abort_task(vha, iocb) == 0)
4829 send_notify_ack = 0;
4830 break;
4831
4832 case IMM_NTFY_RESOURCE:
4833 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4834 "qla_target(%d): Out of resources, host %ld\n",
4835 vha->vp_idx, vha->host_no);
4836 break;
4837
4838 case IMM_NTFY_MSG_RX:
4839 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4840 "qla_target(%d): Immediate notify task %x\n",
4841 vha->vp_idx, iocb->u.isp2x.task_flags);
4842 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4843 send_notify_ack = 0;
4844 break;
4845
4846 case IMM_NTFY_ELS:
4847 if (qlt_24xx_handle_els(vha, iocb) == 0)
4848 send_notify_ack = 0;
4849 break;
2d70c103
NB		 4850 default:
4851 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4852 "qla_target(%d): Received unknown immediate "
4853 "notify status %x\n", vha->vp_idx, status);
4854 break;
4855 }
4856
4857 if (send_notify_ack)
4858 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4859}
4860
4861/*
4862 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4863 * This function sends busy to ISP 2xxx or 24xx.
4864 */
33e79977 4865static int __qlt_send_busy(struct scsi_qla_host *vha,
2d70c103
NB		 4866 struct atio_from_isp *atio, uint16_t status)
4867{
4868 struct ctio7_to_24xx *ctio24;
4869 struct qla_hw_data *ha = vha->hw;
4870 request_t *pkt;
5d964837 4871 struct fc_port *sess = NULL;
7560151b 4872 unsigned long flags;
2d70c103 4873
7560151b 4874 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4875 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4876 atio->u.isp24.fcp_hdr.s_id);
7560151b 4877 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 4878 if (!sess) {
a07100e0 4879 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
33e79977 4880 return 0;
2d70c103
NB		 4881 }
4882 /* Sending marker isn't necessary, since we called from ISR */
4883
4884 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4885 if (!pkt) {
667024a3 4886 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 4887 "qla_target(%d): %s failed: unable to allocate "
4888 "request packet", vha->vp_idx, __func__);
33e79977 4889 return -ENOMEM;
2d70c103
NB		 4890 }
4891
ce1025cd 4892 vha->tgt_counters.num_q_full_sent++;
2d70c103
NB		 4893 pkt->entry_count = 1;
4894 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
4895
4896 ctio24 = (struct ctio7_to_24xx *)pkt;
4897 ctio24->entry_type = CTIO_TYPE7;
4898 ctio24->nport_handle = sess->loop_id;
ad950360 4899 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 4900 ctio24->vp_index = vha->vp_idx;
4901 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
4902 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
4903 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
4904 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
4905 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 4906 cpu_to_le16(
2d70c103
NB		 4907 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
4908 CTIO7_FLAGS_DONT_RET_CTIO);
4909 /*
4910 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
4911 * if the explicit conformation is used.
4912 */
4913 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
4914 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 4915 /* Memory Barrier */
4916 wmb();
2d70c103 4917 qla2x00_start_iocbs(vha, vha->req);
33e79977
QT		 4918 return 0;
4919}
4920
4921/*
4922 * This routine is used to allocate a command for either a QFull condition
4923 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
4924 * out previously.
4925 */
4926static void
4927qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
4928 struct atio_from_isp *atio, uint16_t status, int qfull)
4929{
4930 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4931 struct qla_hw_data *ha = vha->hw;
5d964837 4932 struct fc_port *sess;
33e79977
QT		 4933 struct se_session *se_sess;
4934 struct qla_tgt_cmd *cmd;
4935 int tag;
4936
4937 if (unlikely(tgt->tgt_stop)) {
4938 ql_dbg(ql_dbg_io, vha, 0x300a,
4939 "New command while device %p is shutting down\n", tgt);
4940 return;
4941 }
4942
4943 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
4944 vha->hw->tgt.num_qfull_cmds_dropped++;
4945 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 4946 vha->qla_stats.stat_max_qfull_cmds_dropped)
4947 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 4948 vha->hw->tgt.num_qfull_cmds_dropped;
4949
4950 ql_dbg(ql_dbg_io, vha, 0x3068,
4951 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
4952 vha->vp_idx, __func__,
4953 vha->hw->tgt.num_qfull_cmds_dropped);
4954
4955 qlt_chk_exch_leak_thresh_hold(vha);
4956 return;
4957 }
4958
4959 sess = ha->tgt.tgt_ops->find_sess_by_s_id
4960 (vha, atio->u.isp24.fcp_hdr.s_id);
4961 if (!sess)
4962 return;
4963
4964 se_sess = sess->se_sess;
4965
4966 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4967 if (tag < 0)
4968 return;
4969
4970 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4971 if (!cmd) {
4972 ql_dbg(ql_dbg_io, vha, 0x3009,
4973 "qla_target(%d): %s: Allocation of cmd failed\n",
4974 vha->vp_idx, __func__);
4975
4976 vha->hw->tgt.num_qfull_cmds_dropped++;
4977 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 4978 vha->qla_stats.stat_max_qfull_cmds_dropped)
4979 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 4980 vha->hw->tgt.num_qfull_cmds_dropped;
4981
4982 qlt_chk_exch_leak_thresh_hold(vha);
4983 return;
4984 }
4985
4986 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4987
4988 qlt_incr_num_pend_cmds(vha);
4989 INIT_LIST_HEAD(&cmd->cmd_list);
4990 memcpy(&cmd->atio, atio, sizeof(*atio));
4991
4992 cmd->tgt = vha->vha_tgt.qla_tgt;
4993 cmd->vha = vha;
4994 cmd->reset_count = vha->hw->chip_reset;
4995 cmd->q_full = 1;
4996
4997 if (qfull) {
4998 cmd->q_full = 1;
4999 /* NOTE: borrowing the state field to carry the status */
5000 cmd->state = status;
5001 } else
5002 cmd->term_exchg = 1;
5003
5004 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5005
5006 vha->hw->tgt.num_qfull_cmds_alloc++;
5007 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5008 vha->qla_stats.stat_max_qfull_cmds_alloc)
5009 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977
QT		 5010 vha->hw->tgt.num_qfull_cmds_alloc;
5011}
5012
5013int
5014qlt_free_qfull_cmds(struct scsi_qla_host *vha)
5015{
5016 struct qla_hw_data *ha = vha->hw;
5017 unsigned long flags;
5018 struct qla_tgt_cmd *cmd, *tcmd;
5019 struct list_head free_list;
5020 int rc = 0;
5021
5022 if (list_empty(&ha->tgt.q_full_list))
5023 return 0;
5024
5025 INIT_LIST_HEAD(&free_list);
5026
5027 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
5028
5029 if (list_empty(&ha->tgt.q_full_list)) {
5030 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5031 return 0;
5032 }
5033
5034 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
5035 if (cmd->q_full)
5036 /* cmd->state is a borrowed field to hold status */
5037 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
5038 else if (cmd->term_exchg)
5039 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
5040
5041 if (rc == -ENOMEM)
5042 break;
5043
5044 if (cmd->q_full)
5045 ql_dbg(ql_dbg_io, vha, 0x3006,
5046 "%s: busy sent for ox_id[%04x]\n", __func__,
5047 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5048 else if (cmd->term_exchg)
5049 ql_dbg(ql_dbg_io, vha, 0x3007,
5050 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5051 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5052 else
5053 ql_dbg(ql_dbg_io, vha, 0x3008,
5054 "%s: Unexpected cmd in QFull list %p\n", __func__,
5055 cmd);
5056
5057 list_del(&cmd->cmd_list);
5058 list_add_tail(&cmd->cmd_list, &free_list);
5059
5060 /* piggy back on hardware_lock for protection */
5061 vha->hw->tgt.num_qfull_cmds_alloc--;
5062 }
5063 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5064
5065 cmd = NULL;
5066
5067 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5068 list_del(&cmd->cmd_list);
5069 /* This cmd was never sent to TCM. There is no need
5070 * to schedule free or call free_cmd
5071 */
5072 qlt_free_cmd(cmd);
5073 }
5074 return rc;
5075}
5076
5077static void
5078qlt_send_busy(struct scsi_qla_host *vha,
5079 struct atio_from_isp *atio, uint16_t status)
5080{
5081 int rc = 0;
5082
5083 rc = __qlt_send_busy(vha, atio, status);
5084 if (rc == -ENOMEM)
5085 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5086}
5087
5088static int
5089qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
8b666809 5090 struct atio_from_isp *atio, bool ha_locked)
33e79977
QT		 5091{
5092 struct qla_hw_data *ha = vha->hw;
5093 uint16_t status;
8b666809 5094 unsigned long flags;
33e79977
QT		 5095
5096 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5097 return 0;
5098
8b666809
QT		 5099 if (!ha_locked)
5100 spin_lock_irqsave(&ha->hardware_lock, flags);
33e79977
QT		 5101 status = temp_sam_status;
5102 qlt_send_busy(vha, atio, status);
8b666809
QT		 5103 if (!ha_locked)
5104 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5105
33e79977 5106 return 1;
2d70c103
NB		 5107}
5108
5109/* ha->hardware_lock supposed to be held on entry */
5110/* called via callback from qla2xxx */
5111static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5112 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5113{
5114 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5115 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5116 int rc;
2f424b9b 5117 unsigned long flags;
2d70c103
NB		 5118
5119 if (unlikely(tgt == NULL)) {
667024a3 5120 ql_dbg(ql_dbg_io, vha, 0x3064,
2d70c103
NB		 5121 "ATIO pkt, but no tgt (ha %p)", ha);
5122 return;
5123 }
2d70c103
NB		 5124 /*
5125 * In tgt_stop mode we also should allow all requests to pass.
5126 * Otherwise, some commands can stuck.
5127 */
5128
2f424b9b 5129 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5130
5131 switch (atio->u.raw.entry_type) {
5132 case ATIO_TYPE7:
2d70c103
NB		 5133 if (unlikely(atio->u.isp24.exchange_addr ==
5134 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5135 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5136 "qla_target(%d): ATIO_TYPE7 "
5137 "received with UNKNOWN exchange address, "
5138 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5139 if (!ha_locked)
5140 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5141 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
2f424b9b
QT		 5142 if (!ha_locked)
5143 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5144 break;
5145 }
33e79977
QT		 5146
5147
5148
5149 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
8b666809 5150 rc = qlt_chk_qfull_thresh_hold(vha, atio, ha_locked);
33e79977 5151 if (rc != 0) {
2f424b9b 5152 tgt->atio_irq_cmd_count--;
33e79977
QT		 5153 return;
5154 }
2d70c103 5155 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5156 } else {
2d70c103 5157 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5158 }
2d70c103
NB		 5159 if (unlikely(rc != 0)) {
5160 if (rc == -ESRCH) {
2f424b9b
QT		 5161 if (!ha_locked)
5162 spin_lock_irqsave
5163 (&ha->hardware_lock, flags);
5164
2d70c103
NB		 5165#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5166 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5167#else
a07100e0 5168 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
2d70c103 5169#endif
2f424b9b
QT		 5170
5171 if (!ha_locked)
5172 spin_unlock_irqrestore
5173 (&ha->hardware_lock, flags);
5174
2d70c103
NB		 5175 } else {
5176 if (tgt->tgt_stop) {
5177 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5178 "qla_target: Unable to send "
5179 "command to target for req, "
5180 "ignoring.\n");
5181 } else {
5182 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5183 "qla_target(%d): Unable to send "
5184 "command to target, sending BUSY "
5185 "status.\n", vha->vp_idx);
2f424b9b
QT		 5186 if (!ha_locked)
5187 spin_lock_irqsave(
5188 &ha->hardware_lock, flags);
2d70c103 5189 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
2f424b9b
QT		 5190 if (!ha_locked)
5191 spin_unlock_irqrestore(
5192 &ha->hardware_lock, flags);
2d70c103
NB		 5193 }
5194 }
5195 }
5196 break;
5197
5198 case IMMED_NOTIFY_TYPE:
5199 {
5200 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5201 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5202 "qla_target(%d): Received ATIO packet %x "
5203 "with error status %x\n", vha->vp_idx,
5204 atio->u.raw.entry_type,
5205 atio->u.isp2x.entry_status);
5206 break;
5207 }
5208 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5209
5210 if (!ha_locked)
5211 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5212 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5213 if (!ha_locked)
5214 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5215 break;
5216 }
5217
5218 default:
5219 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5220 "qla_target(%d): Received unknown ATIO atio "
5221 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5222 break;
5223 }
5224
2f424b9b 5225 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5226}
5227
5228/* ha->hardware_lock supposed to be held on entry */
5229/* called via callback from qla2xxx */
5230static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
5231{
5232 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5233 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5234
5235 if (unlikely(tgt == NULL)) {
5236 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5237 "qla_target(%d): Response pkt %x received, but no "
5238 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
5239 return;
5240 }
5241
2d70c103
NB		 5242 /*
5243 * In tgt_stop mode we also should allow all requests to pass.
5244 * Otherwise, some commands can stuck.
5245 */
5246
5247 tgt->irq_cmd_count++;
5248
5249 switch (pkt->entry_type) {
f83adb61 5250 case CTIO_CRC2:
2d70c103
NB		 5251 case CTIO_TYPE7:
5252 {
5253 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
2d70c103
NB		 5254 qlt_do_ctio_completion(vha, entry->handle,
5255 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5256 entry);
5257 break;
5258 }
5259
5260 case ACCEPT_TGT_IO_TYPE:
5261 {
5262 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5263 int rc;
2d70c103 5264 if (atio->u.isp2x.status !=
ad950360 5265 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5266 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5267 "qla_target(%d): ATIO with error "
5268 "status %x received\n", vha->vp_idx,
5269 le16_to_cpu(atio->u.isp2x.status));
5270 break;
5271 }
2d70c103 5272
8b666809 5273 rc = qlt_chk_qfull_thresh_hold(vha, atio, true);
33e79977
QT		 5274 if (rc != 0) {
5275 tgt->irq_cmd_count--;
5276 return;
5277 }
5278
2d70c103
NB		 5279 rc = qlt_handle_cmd_for_atio(vha, atio);
5280 if (unlikely(rc != 0)) {
5281 if (rc == -ESRCH) {
5282#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5283 qlt_send_busy(vha, atio, 0);
5284#else
a07100e0 5285 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
2d70c103
NB		 5286#endif
5287 } else {
5288 if (tgt->tgt_stop) {
5289 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5290 "qla_target: Unable to send "
5291 "command to target, sending TERM "
5292 "EXCHANGE for rsp\n");
5293 qlt_send_term_exchange(vha, NULL,
a07100e0 5294 atio, 1, 0);
2d70c103
NB		 5295 } else {
5296 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5297 "qla_target(%d): Unable to send "
5298 "command to target, sending BUSY "
5299 "status\n", vha->vp_idx);
5300 qlt_send_busy(vha, atio, 0);
5301 }
5302 }
5303 }
5304 }
5305 break;
5306
5307 case CONTINUE_TGT_IO_TYPE:
5308 {
5309 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5310 qlt_do_ctio_completion(vha, entry->handle,
5311 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5312 entry);
5313 break;
5314 }
5315
5316 case CTIO_A64_TYPE:
5317 {
5318 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5319 qlt_do_ctio_completion(vha, entry->handle,
5320 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5321 entry);
5322 break;
5323 }
5324
5325 case IMMED_NOTIFY_TYPE:
5326 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5327 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5328 break;
5329
5330 case NOTIFY_ACK_TYPE:
5331 if (tgt->notify_ack_expected > 0) {
5332 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5333 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5334 "NOTIFY_ACK seq %08x status %x\n",
5335 le16_to_cpu(entry->u.isp2x.seq_id),
5336 le16_to_cpu(entry->u.isp2x.status));
5337 tgt->notify_ack_expected--;
5338 if (entry->u.isp2x.status !=
ad950360 5339 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5340 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5341 "qla_target(%d): NOTIFY_ACK "
5342 "failed %x\n", vha->vp_idx,
5343 le16_to_cpu(entry->u.isp2x.status));
5344 }
5345 } else {
5346 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5347 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5348 vha->vp_idx);
5349 }
5350 break;
5351
5352 case ABTS_RECV_24XX:
5353 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5354 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5355 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5356 break;
5357
5358 case ABTS_RESP_24XX:
5359 if (tgt->abts_resp_expected > 0) {
5360 struct abts_resp_from_24xx_fw *entry =
5361 (struct abts_resp_from_24xx_fw *)pkt;
5362 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5363 "ABTS_RESP_24XX: compl_status %x\n",
5364 entry->compl_status);
5365 tgt->abts_resp_expected--;
5366 if (le16_to_cpu(entry->compl_status) !=
5367 ABTS_RESP_COMPL_SUCCESS) {
5368 if ((entry->error_subcode1 == 0x1E) &&
5369 (entry->error_subcode2 == 0)) {
5370 /*
5371 * We've got a race here: aborted
5372 * exchange not terminated, i.e.
5373 * response for the aborted command was
5374 * sent between the abort request was
5375 * received and processed.
5376 * Unfortunately, the firmware has a
5377 * silly requirement that all aborted
5378 * exchanges must be explicitely
5379 * terminated, otherwise it refuses to
5380 * send responses for the abort
5381 * requests. So, we have to
5382 * (re)terminate the exchange and retry
5383 * the abort response.
5384 */
5385 qlt_24xx_retry_term_exchange(vha,
5386 entry);
5387 } else
5388 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5389 "qla_target(%d): ABTS_RESP_24XX "
5390 "failed %x (subcode %x:%x)",
5391 vha->vp_idx, entry->compl_status,
5392 entry->error_subcode1,
5393 entry->error_subcode2);
5394 }
5395 } else {
5396 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5397 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5398 "received\n", vha->vp_idx);
5399 }
5400 break;
5401
5402 default:
5403 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5404 "qla_target(%d): Received unknown response pkt "
5405 "type %x\n", vha->vp_idx, pkt->entry_type);
5406 break;
5407 }
5408
5409 tgt->irq_cmd_count--;
5410}
5411
5412/*
5413 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5414 */
5415void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5416 uint16_t *mailbox)
5417{
5418 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5419 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5420 int login_code;
2d70c103 5421
2d70c103
NB		 5422 if (!ha->tgt.tgt_ops)
5423 return;
5424
5425 if (unlikely(tgt == NULL)) {
5426 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
5427 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
5428 return;
5429 }
5430
5431 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5432 IS_QLA2100(ha))
5433 return;
5434 /*
5435 * In tgt_stop mode we also should allow all requests to pass.
5436 * Otherwise, some commands can stuck.
5437 */
5438
5439 tgt->irq_cmd_count++;
5440
5441 switch (code) {
5442 case MBA_RESET: /* Reset */
5443 case MBA_SYSTEM_ERR: /* System Error */
5444 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5445 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5446 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5447 "qla_target(%d): System error async event %#x "
6efb3c0a 5448 "occurred", vha->vp_idx, code);
2d70c103
NB		 5449 break;
5450 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5451 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5452 break;
5453
5454 case MBA_LOOP_UP:
5455 {
5456 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5457 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5458 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5459 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5460 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5461 if (tgt->link_reinit_iocb_pending) {
5462 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
5463 0, 0, 0, 0, 0, 0);
5464 tgt->link_reinit_iocb_pending = 0;
5465 }
5466 break;
5467 }
5468
5469 case MBA_LIP_OCCURRED:
5470 case MBA_LOOP_DOWN:
5471 case MBA_LIP_RESET:
5472 case MBA_RSCN_UPDATE:
5473 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5474 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5475 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5476 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5477 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5478 break;
5479
ead03855
QT		 5480 case MBA_REJECTED_FCP_CMD:
5481 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
5482 "qla_target(%d): Async event LS_REJECT occurred "
5483 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5484 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5485 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5486
5487 if (le16_to_cpu(mailbox[3]) == 1) {
5488 /* exchange starvation. */
5489 vha->hw->exch_starvation++;
5490 if (vha->hw->exch_starvation > 5) {
5491 ql_log(ql_log_warn, vha, 0xffff,
5492 "Exchange starvation-. Resetting RISC\n");
5493
5494 vha->hw->exch_starvation = 0;
5495 if (IS_P3P_TYPE(vha->hw))
5496 set_bit(FCOE_CTX_RESET_NEEDED,
5497 &vha->dpc_flags);
5498 else
5499 set_bit(ISP_ABORT_NEEDED,
5500 &vha->dpc_flags);
5501 qla2xxx_wake_dpc(vha);
5502 }
5503 }
5504 break;
5505
2d70c103
NB		 5506 case MBA_PORT_UPDATE:
5507 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5508 "qla_target(%d): Port update async event %#x "
6efb3c0a 5509 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5510 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5511 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5512 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5513
5514 login_code = le16_to_cpu(mailbox[2]);
ead03855 5515 if (login_code == 0x4) {
2d70c103
NB		 5516 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5517 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5518 vha->hw->exch_starvation = 0;
5519 } else if (login_code == 0x7)
2d70c103
NB		 5520 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5521 "Async MB 2: Port Logged Out\n");
5522 break;
2d70c103 5523 default:
2d70c103
NB		 5524 break;
5525 }
5526
5527 tgt->irq_cmd_count--;
5528}
5529
5530static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5531 uint16_t loop_id)
5532{
726b8548 5533 fc_port_t *fcport, *tfcp, *del;
2d70c103 5534 int rc;
726b8548
QT		 5535 unsigned long flags;
5536 u8 newfcport = 0;
2d70c103
NB		 5537
5538 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
5539 if (!fcport) {
5540 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5541 "qla_target(%d): Allocation of tmp FC port failed",
5542 vha->vp_idx);
5543 return NULL;
5544 }
5545
2d70c103
NB		 5546 fcport->loop_id = loop_id;
5547
5548 rc = qla2x00_get_port_database(vha, fcport, 0);
5549 if (rc != QLA_SUCCESS) {
5550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5551 "qla_target(%d): Failed to retrieve fcport "
5552 "information -- get_port_database() returned %x "
5553 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5554 kfree(fcport);
5555 return NULL;
5556 }
5557
726b8548
QT		 5558 del = NULL;
5559 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5560 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5561
5562 if (tfcp) {
5563 tfcp->d_id = fcport->d_id;
5564 tfcp->port_type = fcport->port_type;
5565 tfcp->supported_classes = fcport->supported_classes;
5566 tfcp->flags |= fcport->flags;
5567
5568 del = fcport;
5569 fcport = tfcp;
5570 } else {
5571 if (vha->hw->current_topology == ISP_CFG_F)
5572 fcport->flags |= FCF_FABRIC_DEVICE;
5573
5574 list_add_tail(&fcport->list, &vha->vp_fcports);
5575 if (!IS_SW_RESV_ADDR(fcport->d_id))
5576 vha->fcport_count++;
5577 fcport->login_gen++;
5578 fcport->disc_state = DSC_LOGIN_COMPLETE;
5579 fcport->login_succ = 1;
5580 newfcport = 1;
5581 }
5582
5583 fcport->deleted = 0;
5584 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5585
5586 switch (vha->host->active_mode) {
5587 case MODE_INITIATOR:
5588 case MODE_DUAL:
5589 if (newfcport) {
5590 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
5591 ql_dbg(ql_dbg_disc, vha, 0xffff,
5592 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5593 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5594 qla24xx_post_upd_fcport_work(vha, fcport);
5595 } else {
5596 ql_dbg(ql_dbg_disc, vha, 0xffff,
5597 "%s %d %8phC post gpsc fcp_cnt %d\n",
5598 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5599 qla24xx_post_gpsc_work(vha, fcport);
5600 }
5601 }
5602 break;
5603
5604 case MODE_TARGET:
5605 default:
5606 break;
5607 }
5608 if (del)
5609 qla2x00_free_fcport(del);
5610
2d70c103
NB		 5611 return fcport;
5612}
5613
5614/* Must be called under tgt_mutex */
5d964837 5615static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 5616 uint8_t *s_id)
5617{
5d964837 5618 struct fc_port *sess = NULL;
2d70c103
NB		 5619 fc_port_t *fcport = NULL;
5620 int rc, global_resets;
5621 uint16_t loop_id = 0;
5622
726b8548
QT		 5623 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5624 /*
5625 * This is Domain Controller, so it should be
5626 * OK to drop SCSI commands from it.
5627 */
5628 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5629 "Unable to find initiator with S_ID %x:%x:%x",
5630 s_id[0], s_id[1], s_id[2]);
5631 return NULL;
5632 }
5633
71cdc079
AP		 5634 mutex_lock(&vha->vha_tgt.tgt_mutex);
5635
2d70c103 5636retry:
0e8cd71c
SK		 5637 global_resets =
5638 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5639
5640 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5641 if (rc != 0) {
71cdc079
AP		 5642 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5643
726b8548
QT		 5644 ql_log(ql_log_info, vha, 0xf071,
5645 "qla_target(%d): Unable to find "
5646 "initiator with S_ID %x:%x:%x",
5647 vha->vp_idx, s_id[0], s_id[1],
5648 s_id[2]);
71cdc079
AP		 5649
5650 if (rc == -ENOENT) {
5651 qlt_port_logo_t logo;
5652 sid_to_portid(s_id, &logo.id);
5653 logo.cmd_count = 1;
5654 qlt_send_first_logo(vha, &logo);
5655 }
5656
2d70c103
NB		 5657 return NULL;
5658 }
5659
5660 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5661 if (!fcport) {
5662 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5663 return NULL;
71cdc079 5664 }
2d70c103
NB		 5665
5666 if (global_resets !=
0e8cd71c 5667 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5668 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5669 "qla_target(%d): global reset during session discovery "
5670 "(counter was %d, new %d), retrying", vha->vp_idx,
5671 global_resets,
0e8cd71c
SK		 5672 atomic_read(&vha->vha_tgt.
5673 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5674 goto retry;
5675 }
5676
5677 sess = qlt_create_sess(vha, fcport, true);
5678
71cdc079
AP		 5679 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5680
2d70c103
NB		 5681 return sess;
5682}
5683
5684static void qlt_abort_work(struct qla_tgt *tgt,
5685 struct qla_tgt_sess_work_param *prm)
5686{
5687 struct scsi_qla_host *vha = tgt->vha;
5688 struct qla_hw_data *ha = vha->hw;
5d964837 5689 struct fc_port *sess = NULL;
7560151b 5690 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5691 uint32_t be_s_id;
5692 uint8_t s_id[3];
5693 int rc;
5694
7560151b 5695 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5696
5697 if (tgt->tgt_stop)
7560151b 5698 goto out_term2;
2d70c103
NB		 5699
5700 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5701 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5702 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5703
5704 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5705 (unsigned char *)&be_s_id);
5706 if (!sess) {
7560151b 5707 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 5708
2d70c103
NB		 5709 sess = qlt_make_local_sess(vha, s_id);
5710 /* sess has got an extra creation ref */
2d70c103 5711
7560151b 5712 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 5713 if (!sess)
7560151b 5714 goto out_term2;
2d70c103 5715 } else {
726b8548 5716 if (sess->deleted) {
e52a8b45 5717 sess = NULL;
7560151b 5718 goto out_term2;
e52a8b45
AP		 5719 }
5720
726b8548
QT		 5721 if (!kref_get_unless_zero(&sess->sess_kref)) {
5722 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff,
5723 "%s: kref_get fail %8phC \n",
5724 __func__, sess->port_name);
5725 sess = NULL;
5726 goto out_term2;
5727 }
2d70c103
NB		 5728 }
5729
7560151b
QT		 5730 spin_lock_irqsave(&ha->hardware_lock, flags);
5731
2d70c103
NB		 5732 if (tgt->tgt_stop)
5733 goto out_term;
5734
5735 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
5736 if (rc != 0)
5737 goto out_term;
7560151b 5738 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5d964837
QT		 5739 if (sess)
5740 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5742 return;
5743
7560151b
QT		 5744out_term2:
5745 spin_lock_irqsave(&ha->hardware_lock, flags);
5746
2d70c103
NB		 5747out_term:
5748 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
7560151b
QT		 5749 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5750
726b8548
QT		 5751 if (sess)
5752 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5753 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5754}
5755
5756static void qlt_tmr_work(struct qla_tgt *tgt,
5757 struct qla_tgt_sess_work_param *prm)
5758{
5759 struct atio_from_isp *a = &prm->tm_iocb2;
5760 struct scsi_qla_host *vha = tgt->vha;
5761 struct qla_hw_data *ha = vha->hw;
5d964837 5762 struct fc_port *sess = NULL;
2d70c103
NB		 5763 unsigned long flags;
5764 uint8_t *s_id = NULL; /* to hide compiler warnings */
5765 int rc;
5766 uint32_t lun, unpacked_lun;
52c82823 5767 int fn;
2d70c103
NB		 5768 void *iocb;
5769
7560151b 5770 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5771
5772 if (tgt->tgt_stop)
5773 goto out_term;
5774
5775 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5776 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5777 if (!sess) {
7560151b 5778 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5779
2d70c103
NB		 5780 sess = qlt_make_local_sess(vha, s_id);
5781 /* sess has got an extra creation ref */
2d70c103 5782
7560151b 5783 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5784 if (!sess)
5785 goto out_term;
5786 } else {
726b8548 5787 if (sess->deleted) {
e52a8b45
AP		 5788 sess = NULL;
5789 goto out_term;
5790 }
5791
726b8548
QT		 5792 if (!kref_get_unless_zero(&sess->sess_kref)) {
5793 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff,
5794 "%s: kref_get fail %8phC\n",
5795 __func__, sess->port_name);
5796 sess = NULL;
5797 goto out_term;
5798 }
2d70c103
NB		 5799 }
5800
5801 iocb = a;
5802 lun = a->u.isp24.fcp_cmnd.lun;
2d70c103
NB		 5803 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
5804 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
5805
5806 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5807 if (rc != 0)
5808 goto out_term;
2d70c103 5809
5d964837 5810 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5811 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5812 return;
5813
5814out_term:
a07100e0 5815 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0);
726b8548 5816 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5817 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5818}
5819
5820static void qlt_sess_work_fn(struct work_struct *work)
5821{
5822 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
5823 struct scsi_qla_host *vha = tgt->vha;
5824 unsigned long flags;
5825
5826 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
5827
5828 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5829 while (!list_empty(&tgt->sess_works_list)) {
5830 struct qla_tgt_sess_work_param *prm = list_entry(
5831 tgt->sess_works_list.next, typeof(*prm),
5832 sess_works_list_entry);
5833
5834 /*
5835 * This work can be scheduled on several CPUs at time, so we
5836 * must delete the entry to eliminate double processing
5837 */
5838 list_del(&prm->sess_works_list_entry);
5839
5840 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5841
5842 switch (prm->type) {
5843 case QLA_TGT_SESS_WORK_ABORT:
5844 qlt_abort_work(tgt, prm);
5845 break;
5846 case QLA_TGT_SESS_WORK_TM:
5847 qlt_tmr_work(tgt, prm);
5848 break;
5849 default:
5850 BUG_ON(1);
5851 break;
5852 }
5853
5854 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5855
5856 kfree(prm);
5857 }
5858 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5859}
5860
5861/* Must be called under tgt_host_action_mutex */
5862int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
5863{
5864 struct qla_tgt *tgt;
5865
5866 if (!QLA_TGT_MODE_ENABLED())
5867 return 0;
5868
33c36c0a
AE		 5869 if (!IS_TGT_MODE_CAPABLE(ha)) {
5870 ql_log(ql_log_warn, base_vha, 0xe070,
5871 "This adapter does not support target mode.\n");
5872 return 0;
5873 }
5874
2d70c103 5875 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 5876 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 5877
0e8cd71c 5878 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 5879
5880 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
5881 if (!tgt) {
5882 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
5883 "Unable to allocate struct qla_tgt\n");
5884 return -ENOMEM;
5885 }
5886
5887 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
5888 base_vha->host->hostt->supported_mode |= MODE_TARGET;
5889
5890 tgt->ha = ha;
5891 tgt->vha = base_vha;
5892 init_waitqueue_head(&tgt->waitQ);
2d70c103 5893 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 5894 spin_lock_init(&tgt->sess_work_lock);
5895 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
5896 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 5897 atomic_set(&tgt->tgt_global_resets_count, 0);
5898
0e8cd71c 5899 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 5900
5901 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
5902 "qla_target(%d): using 64 Bit PCI addressing",
5903 base_vha->vp_idx);
5904 tgt->tgt_enable_64bit_addr = 1;
5905 /* 3 is reserved */
5906 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
5907 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
5908 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
5909
ddb95145
NB		 5910 if (base_vha->fc_vport)
5911 return 0;
5912
2d70c103
NB		 5913 mutex_lock(&qla_tgt_mutex);
5914 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
5915 mutex_unlock(&qla_tgt_mutex);
5916
5917 return 0;
5918}
5919
5920/* Must be called under tgt_host_action_mutex */
5921int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
5922{
0e8cd71c 5923 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 5924 return 0;
5925
ddb95145
NB		 5926 if (vha->fc_vport) {
5927 qlt_release(vha->vha_tgt.qla_tgt);
5928 return 0;
5929 }
33e79977
QT		 5930
5931 /* free left over qfull cmds */
5932 qlt_init_term_exchange(vha);
5933
2d70c103 5934 mutex_lock(&qla_tgt_mutex);
0e8cd71c 5935 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 5936 mutex_unlock(&qla_tgt_mutex);
5937
5938 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
5939 vha->host_no, ha);
0e8cd71c 5940 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 5941
5942 return 0;
5943}
5944
5945static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
5946 unsigned char *b)
5947{
5948 int i;
5949
5950 pr_debug("qla2xxx HW vha->node_name: ");
5951 for (i = 0; i < WWN_SIZE; i++)
5952 pr_debug("%02x ", vha->node_name[i]);
5953 pr_debug("\n");
5954 pr_debug("qla2xxx HW vha->port_name: ");
5955 for (i = 0; i < WWN_SIZE; i++)
5956 pr_debug("%02x ", vha->port_name[i]);
5957 pr_debug("\n");
5958
5959 pr_debug("qla2xxx passed configfs WWPN: ");
5960 put_unaligned_be64(wwpn, b);
5961 for (i = 0; i < WWN_SIZE; i++)
5962 pr_debug("%02x ", b[i]);
5963 pr_debug("\n");
5964}
5965
5966/**
5967 * qla_tgt_lport_register - register lport with external module
5968 *
5969 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
5970 * @wwpn: Passwd FC target WWPN
5971 * @callback: lport initialization callback for tcm_qla2xxx code
5972 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
5973 */
49a47f2c
NB		 5974int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
5975 u64 npiv_wwpn, u64 npiv_wwnn,
5976 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 5977{
5978 struct qla_tgt *tgt;
5979 struct scsi_qla_host *vha;
5980 struct qla_hw_data *ha;
5981 struct Scsi_Host *host;
5982 unsigned long flags;
5983 int rc;
5984 u8 b[WWN_SIZE];
5985
5986 mutex_lock(&qla_tgt_mutex);
5987 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
5988 vha = tgt->vha;
5989 ha = vha->hw;
5990
5991 host = vha->host;
5992 if (!host)
5993 continue;
5994
2d70c103
NB		 5995 if (!(host->hostt->supported_mode & MODE_TARGET))
5996 continue;
5997
5998 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 5999 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6000 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6001 host->host_no);
6002 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6003 continue;
6004 }
ddb95145
NB		 6005 if (tgt->tgt_stop) {
6006 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6007 host->host_no);
6008 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6009 continue;
6010 }
2d70c103
NB		 6011 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6012
6013 if (!scsi_host_get(host)) {
6014 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6015 "Unable to scsi_host_get() for"
6016 " qla2xxx scsi_host\n");
6017 continue;
6018 }
49a47f2c 6019 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6020
6021 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6022 scsi_host_put(host);
6023 continue;
6024 }
49a47f2c
NB		 6025 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6026 if (rc != 0)
6027 scsi_host_put(host);
6028
ddb95145 6029 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6030 return rc;
6031 }
6032 mutex_unlock(&qla_tgt_mutex);
6033
6034 return -ENODEV;
6035}
6036EXPORT_SYMBOL(qlt_lport_register);
6037
6038/**
6039 * qla_tgt_lport_deregister - Degister lport
6040 *
6041 * @vha: Registered scsi_qla_host pointer
6042 */
6043void qlt_lport_deregister(struct scsi_qla_host *vha)
6044{
6045 struct qla_hw_data *ha = vha->hw;
6046 struct Scsi_Host *sh = vha->host;
6047 /*
6048 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6049 */
0e8cd71c 6050 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6051 ha->tgt.tgt_ops = NULL;
6052 /*
6053 * Release the Scsi_Host reference for the underlying qla2xxx host
6054 */
6055 scsi_host_put(sh);
6056}
6057EXPORT_SYMBOL(qlt_lport_deregister);
6058
6059/* Must be called under HW lock */
55a9066f 6060static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6061{
2d70c103
NB		 6062 switch (ql2x_ini_mode) {
6063 case QLA2XXX_INI_MODE_DISABLED:
6064 case QLA2XXX_INI_MODE_EXCLUSIVE:
6065 vha->host->active_mode = MODE_TARGET;
6066 break;
6067 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6068 vha->host->active_mode = MODE_UNKNOWN;
6069 break;
6070 case QLA2XXX_INI_MODE_DUAL:
6071 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6072 break;
6073 default:
6074 break;
6075 }
2d70c103
NB		 6076}
6077
6078/* Must be called under HW lock */
55a9066f 6079static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6080{
2d70c103
NB		 6081 switch (ql2x_ini_mode) {
6082 case QLA2XXX_INI_MODE_DISABLED:
6083 vha->host->active_mode = MODE_UNKNOWN;
6084 break;
6085 case QLA2XXX_INI_MODE_EXCLUSIVE:
6086 vha->host->active_mode = MODE_INITIATOR;
6087 break;
6088 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6089 case QLA2XXX_INI_MODE_DUAL:
6090 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6091 break;
6092 default:
6093 break;
6094 }
2d70c103
NB		 6095}
6096
6097/*
6098 * qla_tgt_enable_vha - NO LOCK HELD
6099 *
6100 * host_reset, bring up w/ Target Mode Enabled
6101 */
6102void
6103qlt_enable_vha(struct scsi_qla_host *vha)
6104{
6105 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6106 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6107 unsigned long flags;
0e8cd71c 6108 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
cdb898c5 6109 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER;
2d70c103
NB		 6110
6111 if (!tgt) {
6112 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6113 "Unable to locate qla_tgt pointer from"
6114 " struct qla_hw_data\n");
6115 dump_stack();
6116 return;
6117 }
6118
6119 spin_lock_irqsave(&ha->hardware_lock, flags);
6120 tgt->tgt_stopped = 0;
6121 qlt_set_mode(vha);
6122 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6123
0e8cd71c
SK		 6124 if (vha->vp_idx) {
6125 qla24xx_disable_vp(vha);
6126 qla24xx_enable_vp(vha);
6127 } else {
cdb898c5
QT		 6128 if (ha->msix_entries) {
6129 ql_dbg(ql_dbg_tgt, vha, 0xffff,
6130 "%s: host%ld : vector %d cpu %d\n",
6131 __func__, vha->host_no,
6132 ha->msix_entries[rspq_ent].vector,
6133 ha->msix_entries[rspq_ent].cpuid);
6134
6135 ha->tgt.rspq_vector_cpuid =
6136 ha->msix_entries[rspq_ent].cpuid;
6137 }
6138
0e8cd71c
SK		 6139 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6140 qla2xxx_wake_dpc(base_vha);
6141 qla2x00_wait_for_hba_online(base_vha);
6142 }
2d70c103
NB		 6143}
6144EXPORT_SYMBOL(qlt_enable_vha);
6145
6146/*
6147 * qla_tgt_disable_vha - NO LOCK HELD
6148 *
6149 * Disable Target Mode and reset the adapter
6150 */
55a9066f 6151static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6152{
6153 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6154 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6155 unsigned long flags;
6156
6157 if (!tgt) {
6158 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6159 "Unable to locate qla_tgt pointer from"
6160 " struct qla_hw_data\n");
6161 dump_stack();
6162 return;
6163 }
6164
6165 spin_lock_irqsave(&ha->hardware_lock, flags);
6166 qlt_clear_mode(vha);
6167 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6168
6169 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6170 qla2xxx_wake_dpc(vha);
6171 qla2x00_wait_for_hba_online(vha);
6172}
6173
6174/*
6175 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6176 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6177 * members.
6178 */
6179void
6180qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6181{
0e8cd71c
SK		 6182 vha->vha_tgt.qla_tgt = NULL;
6183
6184 mutex_init(&vha->vha_tgt.tgt_mutex);
6185 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6186
6187 qlt_clear_mode(vha);
6188
6189 /*
6190 * NOTE: Currently the value is kept the same for <24xx and
6191 * >=24xx ISPs. If it is necessary to change it,
6192 * the check should be added for specific ISPs,
6193 * assigning the value appropriately.
6194 */
6195 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6196
6197 qlt_add_target(ha, vha);
2d70c103
NB		 6198}
6199
6200void
6201qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6202{
6203 /*
6204 * FC-4 Feature bit 0 indicates target functionality to the name server.
6205 */
6206 if (qla_tgt_mode_enabled(vha)) {
726b8548 6207 ct_req->req.rff_id.fc4_feature = BIT_0;
2d70c103
NB		 6208 } else if (qla_ini_mode_enabled(vha)) {
6209 ct_req->req.rff_id.fc4_feature = BIT_1;
726b8548
QT		 6210 } else if (qla_dual_mode_enabled(vha))
6211 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
2d70c103
NB		 6212}
6213
6214/*
6215 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6216 * @ha: HA context
6217 *
6218 * Beginning of ATIO ring has initialization control block already built
6219 * by nvram config routine.
6220 *
6221 * Returns 0 on success.
6222 */
6223void
6224qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6225{
6226 struct qla_hw_data *ha = vha->hw;
6227 uint16_t cnt;
6228 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6229
ead03855 6230 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6231 return;
6232
6233 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6234 pkt->u.raw.signature = ATIO_PROCESSED;
6235 pkt++;
6236 }
6237
6238}
6239
6240/*
6241 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6242 * @ha: SCSI driver HA context
6243 */
6244void
2f424b9b 6245qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6246{
6247 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6248 struct atio_from_isp *pkt;
6249 int cnt, i;
6250
6251 if (!vha->flags.online)
6252 return;
6253
5f35509d
QT		 6254 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6255 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6256 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6257 cnt = pkt->u.raw.entry_count;
6258
5f35509d
QT		 6259 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6260 /*
6261 * This packet is corrupted. The header + payload
6262 * can not be trusted. There is no point in passing
6263 * it further up.
6264 */
6265 ql_log(ql_log_warn, vha, 0xffff,
6266 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6267 pkt->u.isp24.fcp_hdr.s_id,
6268 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6269 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6270
6271 adjust_corrupted_atio(pkt);
6272 qlt_send_term_exchange(vha, NULL, pkt, ha_locked, 0);
6273 } else {
6274 qlt_24xx_atio_pkt_all_vps(vha,
6275 (struct atio_from_isp *)pkt, ha_locked);
6276 }
2d70c103
NB		 6277
6278 for (i = 0; i < cnt; i++) {
6279 ha->tgt.atio_ring_index++;
6280 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6281 ha->tgt.atio_ring_index = 0;
6282 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6283 } else
6284 ha->tgt.atio_ring_ptr++;
6285
6286 pkt->u.raw.signature = ATIO_PROCESSED;
6287 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6288 }
6289 wmb();
6290 }
6291
6292 /* Adjust ring index */
aa230bc5 6293 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
3761f3e8 6294 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
2d70c103
NB		 6295}
6296
6297void
aa230bc5 6298qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6299{
6300 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 6301 if (!QLA_TGT_MODE_ENABLED())
6302 return;
2d70c103 6303
aa230bc5
AE		 6304 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6305 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6306 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6307
6308 if (IS_ATIO_MSIX_CAPABLE(ha)) {
6309 struct qla_msix_entry *msix = &ha->msix_entries[2];
6310 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6311
6312 icb->msix_atio = cpu_to_le16(msix->entry);
6313 ql_dbg(ql_dbg_init, vha, 0xf072,
6314 "Registering ICB vector 0x%x for atio que.\n",
6315 msix->entry);
2d70c103
NB		 6316 }
6317}
6318
6319void
6320qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6321{
6322 struct qla_hw_data *ha = vha->hw;
ead03855
QT		 6323 u32 tmp;
6324 u16 t;
2d70c103 6325
ead03855 6326 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6327 if (!ha->tgt.saved_set) {
6328 /* We save only once */
6329 ha->tgt.saved_exchange_count = nv->exchange_count;
6330 ha->tgt.saved_firmware_options_1 =
6331 nv->firmware_options_1;
6332 ha->tgt.saved_firmware_options_2 =
6333 nv->firmware_options_2;
6334 ha->tgt.saved_firmware_options_3 =
6335 nv->firmware_options_3;
6336 ha->tgt.saved_set = 1;
6337 }
6338
ead03855
QT		 6339 if (qla_tgt_mode_enabled(vha)) {
6340 nv->exchange_count = cpu_to_le16(0xFFFF);
6341 } else { /* dual */
6342 if (ql_dm_tgt_ex_pct > 100) {
6343 ql_dm_tgt_ex_pct = 50;
6344 } else if (ql_dm_tgt_ex_pct == 100) {
6345 /* leave some for FW */
6346 ql_dm_tgt_ex_pct = 95;
6347 }
6348
6349 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
6350 tmp = tmp/100;
6351 if (tmp > 0xffff)
6352 tmp = 0xffff;
6353
6354 t = tmp & 0xffff;
6355 nv->exchange_count = cpu_to_le16(t);
6356 }
2d70c103
NB		 6357
6358 /* Enable target mode */
ad950360 6359 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6360
6361 /* Disable ini mode, if requested */
726b8548 6362 if (qla_tgt_mode_enabled(vha))
ad950360 6363 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6364
6365 /* Disable Full Login after LIP */
ad950360 6366 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6367 /* Enable initial LIP */
ad950360 6368 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6369 if (ql2xtgt_tape_enable)
6370 /* Enable FC Tape support */
6371 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6372 else
6373 /* Disable FC Tape support */
6374 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6375
2d70c103 6376 /* Disable Full Login after LIP */
ad950360 6377 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6378
6379 /*
6380 * clear BIT 15 explicitly as we have seen at least
6381 * a couple of instances where this was set and this
6382 * was causing the firmware to not be initialized.
6383 */
6384 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6385 /* Enable target PRLI control */
ad950360 6386 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6387 } else {
6388 if (ha->tgt.saved_set) {
6389 nv->exchange_count = ha->tgt.saved_exchange_count;
6390 nv->firmware_options_1 =
6391 ha->tgt.saved_firmware_options_1;
6392 nv->firmware_options_2 =
6393 ha->tgt.saved_firmware_options_2;
6394 nv->firmware_options_3 =
6395 ha->tgt.saved_firmware_options_3;
6396 }
6397 return;
6398 }
6399
2d70c103
NB		 6400 if (ha->tgt.enable_class_2) {
6401 if (vha->flags.init_done)
6402 fc_host_supported_classes(vha->host) =
6403 FC_COS_CLASS2 | FC_COS_CLASS3;
6404
ad950360 6405 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6406 } else {
6407 if (vha->flags.init_done)
6408 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6409
ad950360 6410 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6411 }
6412}
6413
6414void
6415qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6416 struct init_cb_24xx *icb)
6417{
6418 struct qla_hw_data *ha = vha->hw;
6419
481ce733
QT		 6420 if (!QLA_TGT_MODE_ENABLED())
6421 return;
6422
2d70c103
NB		 6423 if (ha->tgt.node_name_set) {
6424 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6425 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6426 }
481ce733
QT		 6427
6428 /* disable ZIO at start time. */
6429 if (!vha->flags.init_done) {
6430 uint32_t tmp;
6431 tmp = le32_to_cpu(icb->firmware_options_2);
6432 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6433 icb->firmware_options_2 = cpu_to_le32(tmp);
6434 }
2d70c103
NB		 6435}
6436
aa230bc5
AE		 6437void
6438qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6439{
6440 struct qla_hw_data *ha = vha->hw;
ead03855
QT		 6441 u32 tmp;
6442 u16 t;
aa230bc5
AE		 6443
6444 if (!QLA_TGT_MODE_ENABLED())
6445 return;
6446
ead03855 6447 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6448 if (!ha->tgt.saved_set) {
6449 /* We save only once */
6450 ha->tgt.saved_exchange_count = nv->exchange_count;
6451 ha->tgt.saved_firmware_options_1 =
6452 nv->firmware_options_1;
6453 ha->tgt.saved_firmware_options_2 =
6454 nv->firmware_options_2;
6455 ha->tgt.saved_firmware_options_3 =
6456 nv->firmware_options_3;
6457 ha->tgt.saved_set = 1;
6458 }
6459
ead03855
QT		 6460 if (qla_tgt_mode_enabled(vha)) {
6461 nv->exchange_count = cpu_to_le16(0xFFFF);
6462 } else { /* dual */
6463 if (ql_dm_tgt_ex_pct > 100) {
6464 ql_dm_tgt_ex_pct = 50;
6465 } else if (ql_dm_tgt_ex_pct == 100) {
6466 /* leave some for FW */
6467 ql_dm_tgt_ex_pct = 95;
6468 }
6469
6470 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
6471 tmp = tmp/100;
6472 if (tmp > 0xffff)
6473 tmp = 0xffff;
6474 t = tmp & 0xffff;
6475 nv->exchange_count = cpu_to_le16(t);
6476 }
aa230bc5
AE		 6477
6478 /* Enable target mode */
ad950360 6479 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6480
6481 /* Disable ini mode, if requested */
726b8548 6482 if (qla_tgt_mode_enabled(vha))
ad950360 6483 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6484 /* Disable Full Login after LIP */
ad950360 6485 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6486 /* Enable initial LIP */
ad950360 6487 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6488 /*
6489 * clear BIT 15 explicitly as we have seen at
6490 * least a couple of instances where this was set
6491 * and this was causing the firmware to not be
6492 * initialized.
6493 */
6494 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6495 if (ql2xtgt_tape_enable)
6496 /* Enable FC tape support */
6497 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6498 else
6499 /* Disable FC tape support */
6500 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6501
aa230bc5 6502 /* Disable Full Login after LIP */
ad950360 6503 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6504 /* Enable target PRLI control */
ad950360 6505 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6506 } else {
6507 if (ha->tgt.saved_set) {
6508 nv->exchange_count = ha->tgt.saved_exchange_count;
6509 nv->firmware_options_1 =
6510 ha->tgt.saved_firmware_options_1;
6511 nv->firmware_options_2 =
6512 ha->tgt.saved_firmware_options_2;
6513 nv->firmware_options_3 =
6514 ha->tgt.saved_firmware_options_3;
6515 }
6516 return;
6517 }
6518
aa230bc5
AE		 6519 if (ha->tgt.enable_class_2) {
6520 if (vha->flags.init_done)
6521 fc_host_supported_classes(vha->host) =
6522 FC_COS_CLASS2 | FC_COS_CLASS3;
6523
ad950360 6524 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6525 } else {
6526 if (vha->flags.init_done)
6527 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6528
ad950360 6529 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6530 }
6531}
6532
6533void
6534qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6535 struct init_cb_81xx *icb)
6536{
6537 struct qla_hw_data *ha = vha->hw;
6538
6539 if (!QLA_TGT_MODE_ENABLED())
6540 return;
6541
6542 if (ha->tgt.node_name_set) {
6543 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6544 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6545 }
481ce733
QT		 6546
6547 /* disable ZIO at start time. */
6548 if (!vha->flags.init_done) {
6549 uint32_t tmp;
6550 tmp = le32_to_cpu(icb->firmware_options_2);
6551 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6552 icb->firmware_options_2 = cpu_to_le32(tmp);
6553 }
6554
aa230bc5
AE		 6555}
6556
6557void
6558qlt_83xx_iospace_config(struct qla_hw_data *ha)
6559{
6560 if (!QLA_TGT_MODE_ENABLED())
6561 return;
6562
6563 ha->msix_count += 1; /* For ATIO Q */
6564}
6565
2d70c103
NB		 6566int
6567qlt_24xx_process_response_error(struct scsi_qla_host *vha,
6568 struct sts_entry_24xx *pkt)
6569{
6570 switch (pkt->entry_type) {
6571 case ABTS_RECV_24XX:
6572 case ABTS_RESP_24XX:
6573 case CTIO_TYPE7:
6574 case NOTIFY_ACK_TYPE:
f83adb61 6575 case CTIO_CRC2:
2d70c103
NB		 6576 return 1;
6577 default:
6578 return 0;
6579 }
6580}
6581
6582void
6583qlt_modify_vp_config(struct scsi_qla_host *vha,
6584 struct vp_config_entry_24xx *vpmod)
6585{
ead03855
QT		 6586 /* enable target mode. Bit5 = 1 => disable */
6587 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 6588 vpmod->options_idx1 &= ~BIT_5;
726b8548 6589
ead03855 6590 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 6591 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 6592 vpmod->options_idx1 &= ~BIT_4;
6593}
6594
6595void
6596qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6597{
6598 if (!QLA_TGT_MODE_ENABLED())
6599 return;
6600
b20f02e1 6601 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6602 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6603 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6604 } else {
6605 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6606 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6607 }
6608
0e8cd71c
SK		 6609 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6610 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 6611
6612 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6613 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6614 qlt_unknown_atio_work_fn);
6615
2d70c103
NB		 6616 qlt_clear_mode(base_vha);
6617}
6618
aa230bc5
AE		 6619irqreturn_t
6620qla83xx_msix_atio_q(int irq, void *dev_id)
6621{
6622 struct rsp_que *rsp;
6623 scsi_qla_host_t *vha;
6624 struct qla_hw_data *ha;
6625 unsigned long flags;
6626
6627 rsp = (struct rsp_que *) dev_id;
6628 ha = rsp->hw;
6629 vha = pci_get_drvdata(ha->pdev);
6630
2f424b9b 6631 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6632
2f424b9b 6633 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6634
2f424b9b 6635 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6636
6637 return IRQ_HANDLED;
6638}
6639
2f424b9b
QT		 6640static void
6641qlt_handle_abts_recv_work(struct work_struct *work)
6642{
6643 struct qla_tgt_sess_op *op = container_of(work,
6644 struct qla_tgt_sess_op, work);
6645 scsi_qla_host_t *vha = op->vha;
6646 struct qla_hw_data *ha = vha->hw;
6647 unsigned long flags;
6648
6649 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset))
6650 return;
6651
6652 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6653 qlt_24xx_process_atio_queue(vha, 0);
6654 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6655
6656 spin_lock_irqsave(&ha->hardware_lock, flags);
6657 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio);
6658 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 6659
6660 kfree(op);
2f424b9b
QT		 6661}
6662
6663void
6664qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
6665{
6666 struct qla_tgt_sess_op *op;
6667
6668 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6669
6670 if (!op) {
6671 /* do not reach for ATIO queue here. This is best effort err
6672 * recovery at this point.
6673 */
6674 qlt_response_pkt_all_vps(vha, pkt);
6675 return;
6676 }
6677
6678 memcpy(&op->atio, pkt, sizeof(*pkt));
6679 op->vha = vha;
6680 op->chip_reset = vha->hw->chip_reset;
6681 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6682 queue_work(qla_tgt_wq, &op->work);
6683 return;
6684}
6685
2d70c103
NB		 6686int
6687qlt_mem_alloc(struct qla_hw_data *ha)
6688{
6689 if (!QLA_TGT_MODE_ENABLED())
6690 return 0;
6691
6692 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6693 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6694 if (!ha->tgt.tgt_vp_map)
6695 return -ENOMEM;
6696
6697 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6698 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6699 &ha->tgt.atio_dma, GFP_KERNEL);
6700 if (!ha->tgt.atio_ring) {
6701 kfree(ha->tgt.tgt_vp_map);
6702 return -ENOMEM;
6703 }
6704 return 0;
6705}
6706
6707void
6708qlt_mem_free(struct qla_hw_data *ha)
6709{
6710 if (!QLA_TGT_MODE_ENABLED())
6711 return;
6712
6713 if (ha->tgt.atio_ring) {
6714 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6715 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6716 ha->tgt.atio_dma);
6717 }
6718 kfree(ha->tgt.tgt_vp_map);
6719}
6720
6721/* vport_slock to be held by the caller */
6722void
6723qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6724{
6725 if (!QLA_TGT_MODE_ENABLED())
6726 return;
6727
6728 switch (cmd) {
6729 case SET_VP_IDX:
6730 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6731 break;
6732 case SET_AL_PA:
6733 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
6734 break;
6735 case RESET_VP_IDX:
6736 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
6737 break;
6738 case RESET_AL_PA:
6739 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
6740 break;
6741 }
6742}
6743
6744static int __init qlt_parse_ini_mode(void)
6745{
6746 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
6747 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
6748 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
6749 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
6750 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
6751 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 6752 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
6753 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 6754 else
6755 return false;
6756
6757 return true;
6758}
6759
6760int __init qlt_init(void)
6761{
6762 int ret;
6763
6764 if (!qlt_parse_ini_mode()) {
6765 ql_log(ql_log_fatal, NULL, 0xe06b,
6766 "qlt_parse_ini_mode() failed\n");
6767 return -EINVAL;
6768 }
6769
6770 if (!QLA_TGT_MODE_ENABLED())
6771 return 0;
6772
2d70c103
NB		 6773 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
6774 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
6775 qla_tgt_mgmt_cmd), 0, NULL);
6776 if (!qla_tgt_mgmt_cmd_cachep) {
6777 ql_log(ql_log_fatal, NULL, 0xe06d,
6778 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 6779 return -ENOMEM;
2d70c103
NB		 6780 }
6781
b7bd104e 6782 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 6783 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
6784 0, NULL);
b7bd104e
AP		 6785
6786 if (!qla_tgt_plogi_cachep) {
6787 ql_log(ql_log_fatal, NULL, 0xe06d,
6788 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
6789 ret = -ENOMEM;
6790 goto out_mgmt_cmd_cachep;
6791 }
6792
2d70c103
NB		 6793 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
6794 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
6795 if (!qla_tgt_mgmt_cmd_mempool) {
6796 ql_log(ql_log_fatal, NULL, 0xe06e,
6797 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
6798 ret = -ENOMEM;
b7bd104e 6799 goto out_plogi_cachep;
2d70c103
NB		 6800 }
6801
6802 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
6803 if (!qla_tgt_wq) {
6804 ql_log(ql_log_fatal, NULL, 0xe06f,
6805 "alloc_workqueue for qla_tgt_wq failed\n");
6806 ret = -ENOMEM;
6807 goto out_cmd_mempool;
6808 }
6809 /*
6810 * Return 1 to signal that initiator-mode is being disabled
6811 */
6812 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
6813
6814out_cmd_mempool:
6815 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 6816out_plogi_cachep:
6817 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 6818out_mgmt_cmd_cachep:
6819 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 6820 return ret;
6821}
6822
6823void qlt_exit(void)
6824{
6825 if (!QLA_TGT_MODE_ENABLED())
6826 return;
6827
6828 destroy_workqueue(qla_tgt_wq);
6829 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 6830 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 6831 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 6832}
Linux 6.x block layer and io_uring tree(s)