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