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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
[linux-stable.git] / drivers / scsi / qla2xxx / qla_target.c
blob11eadb3bd36e5c33d06fc34e4e3d5d3cb1f9ed86
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
4 *
5 * based on qla2x00t.c code:
6 *
7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
8 * Copyright (C) 2004 - 2005 Leonid Stoljar
9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
10 * Copyright (C) 2006 - 2010 ID7 Ltd.
11 *
12 * Forward port and refactoring to modern qla2xxx and target/configfs
13 *
14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
15 */
16
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/types.h>
20 #include <linux/blkdev.h>
21 #include <linux/interrupt.h>
22 #include <linux/pci.h>
23 #include <linux/delay.h>
24 #include <linux/list.h>
25 #include <linux/workqueue.h>
26 #include <linux/unaligned.h>
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_host.h>
29 #include <scsi/scsi_tcq.h>
30
31 #include "qla_def.h"
32 #include "qla_target.h"
33
34 static int ql2xtgt_tape_enable;
35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
36 MODULE_PARM_DESC(ql2xtgt_tape_enable,
37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
38
39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
40 module_param(qlini_mode, charp, S_IRUGO);
41 MODULE_PARM_DESC(qlini_mode,
42 "Determines when initiator mode will be enabled. Possible values: "
43 "\"exclusive\" - initiator mode will be enabled on load, "
44 "disabled on enabling target mode and then on disabling target mode "
45 "enabled back; "
46 "\"disabled\" - initiator mode will never be enabled; "
47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
48 "when ready "
49 "\"enabled\" (default) - initiator mode will always stay enabled.");
50
51 int ql2xuctrlirq = 1;
52 module_param(ql2xuctrlirq, int, 0644);
53 MODULE_PARM_DESC(ql2xuctrlirq,
54 "User to control IRQ placement via smp_affinity."
55 "Valid with qlini_mode=disabled."
56 "1(default): enable");
57
58 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
59
60 static int qla_sam_status = SAM_STAT_BUSY;
61 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */
62
63 /*
64 * From scsi/fc/fc_fcp.h
65 */
66 enum fcp_resp_rsp_codes {
67 FCP_TMF_CMPL = 0,
68 FCP_DATA_LEN_INVALID = 1,
69 FCP_CMND_FIELDS_INVALID = 2,
70 FCP_DATA_PARAM_MISMATCH = 3,
71 FCP_TMF_REJECTED = 4,
72 FCP_TMF_FAILED = 5,
73 FCP_TMF_INVALID_LUN = 9,
74 };
75
76 /*
77 * fc_pri_ta from scsi/fc/fc_fcp.h
78 */
79 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
80 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
81 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
82 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
83 #define FCP_PTA_MASK 7 /* mask for task attribute field */
84 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
85 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
86
87 /*
88 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
89 * must be called under HW lock and could unlock/lock it inside.
90 * It isn't an issue, since in the current implementation on the time when
91 * those functions are called:
92 *
93 * - Either context is IRQ and only IRQ handler can modify HW data,
94 * including rings related fields,
95 *
96 * - Or access to target mode variables from struct qla_tgt doesn't
97 * cross those functions boundaries, except tgt_stop, which
98 * additionally protected by irq_cmd_count.
99 */
100 /* Predefs for callbacks handed to qla2xxx LLD */
101 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
102 struct atio_from_isp *pkt, uint8_t);
103 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
104 response_t *pkt);
105 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
106 int fn, void *iocb, int flags);
107 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
108 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
109 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
110 struct atio_from_isp *atio, uint16_t status, int qfull);
111 static void qlt_disable_vha(struct scsi_qla_host *vha);
112 static void qlt_clear_tgt_db(struct qla_tgt *tgt);
113 static void qlt_send_notify_ack(struct qla_qpair *qpair,
114 struct imm_ntfy_from_isp *ntfy,
115 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
116 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
117 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
118 struct imm_ntfy_from_isp *imm, int ha_locked);
119 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
120 fc_port_t *fcport, bool local);
121 void qlt_unreg_sess(struct fc_port *sess);
122 static void qlt_24xx_handle_abts(struct scsi_qla_host *,
123 struct abts_recv_from_24xx *);
124 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
125 uint16_t);
126 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t);
127 static inline uint32_t qlt_make_handle(struct qla_qpair *);
128
129 /*
130 * Global Variables
131 */
132 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
133 struct kmem_cache *qla_tgt_plogi_cachep;
134 static mempool_t *qla_tgt_mgmt_cmd_mempool;
135 static struct workqueue_struct *qla_tgt_wq;
136 static DEFINE_MUTEX(qla_tgt_mutex);
137 static LIST_HEAD(qla_tgt_glist);
138
139 static const char *prot_op_str(u32 prot_op)
140 {
141 switch (prot_op) {
142 case TARGET_PROT_NORMAL: return "NORMAL";
143 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
144 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
145 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
146 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
147 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
148 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
149 default: return "UNKNOWN";
150 }
151 }
152
153 /* This API intentionally takes dest as a parameter, rather than returning
154 * int value to avoid caller forgetting to issue wmb() after the store */
155 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
156 {
157 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
158 *dest = atomic_inc_return(&base_vha->generation_tick);
159 /* memory barrier */
160 wmb();
161 }
162
163 /* Might release hw lock, then reaquire!! */
164 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
165 {
166 /* Send marker if required */
167 if (unlikely(vha->marker_needed != 0)) {
168 int rc = qla2x00_issue_marker(vha, vha_locked);
169
170 if (rc != QLA_SUCCESS) {
171 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
172 "qla_target(%d): issue_marker() failed\n",
173 vha->vp_idx);
174 }
175 return rc;
176 }
177 return QLA_SUCCESS;
178 }
179
180 struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha,
181 be_id_t d_id)
182 {
183 struct scsi_qla_host *host;
184 uint32_t key;
185
186 if (vha->d_id.b.area == d_id.area &&
187 vha->d_id.b.domain == d_id.domain &&
188 vha->d_id.b.al_pa == d_id.al_pa)
189 return vha;
190
191 key = be_to_port_id(d_id).b24;
192
193 host = btree_lookup32(&vha->hw->host_map, key);
194 if (!host)
195 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
196 "Unable to find host %06x\n", key);
197
198 return host;
199 }
200
201 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
202 {
203 unsigned long flags;
204
205 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
206
207 vha->hw->tgt.num_pend_cmds++;
208 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
209 vha->qla_stats.stat_max_pend_cmds =
210 vha->hw->tgt.num_pend_cmds;
211 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
212 }
213 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
214 {
215 unsigned long flags;
216
217 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
218 vha->hw->tgt.num_pend_cmds--;
219 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
220 }
221
222
223 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
224 struct atio_from_isp *atio, uint8_t ha_locked)
225 {
226 struct qla_tgt_sess_op *u;
227 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
228 unsigned long flags;
229
230 if (tgt->tgt_stop) {
231 ql_dbg(ql_dbg_async, vha, 0x502c,
232 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
233 vha->vp_idx);
234 goto out_term;
235 }
236
237 u = kzalloc(sizeof(*u), GFP_ATOMIC);
238 if (u == NULL)
239 goto out_term;
240
241 u->vha = vha;
242 memcpy(&u->atio, atio, sizeof(*atio));
243 INIT_LIST_HEAD(&u->cmd_list);
244
245 spin_lock_irqsave(&vha->cmd_list_lock, flags);
246 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
247 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
248
249 schedule_delayed_work(&vha->unknown_atio_work, 1);
250
251 out:
252 return;
253
254 out_term:
255 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
256 goto out;
257 }
258
259 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
260 uint8_t ha_locked)
261 {
262 struct qla_tgt_sess_op *u, *t;
263 scsi_qla_host_t *host;
264 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
265 unsigned long flags;
266 uint8_t queued = 0;
267
268 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
269 if (u->aborted) {
270 ql_dbg(ql_dbg_async, vha, 0x502e,
271 "Freeing unknown %s %p, because of Abort\n",
272 "ATIO_TYPE7", u);
273 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
274 &u->atio, ha_locked, 0);
275 goto abort;
276 }
277
278 host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
279 if (host != NULL) {
280 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
281 "Requeuing unknown ATIO_TYPE7 %p\n", u);
282 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
283 } else if (tgt->tgt_stop) {
284 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
285 "Freeing unknown %s %p, because tgt is being stopped\n",
286 "ATIO_TYPE7", u);
287 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
288 &u->atio, ha_locked, 0);
289 } else {
290 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
291 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
292 if (!queued) {
293 queued = 1;
294 schedule_delayed_work(&vha->unknown_atio_work,
295 1);
296 }
297 continue;
298 }
299
300 abort:
301 spin_lock_irqsave(&vha->cmd_list_lock, flags);
302 list_del(&u->cmd_list);
303 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
304 kfree(u);
305 }
306 }
307
308 void qlt_unknown_atio_work_fn(struct work_struct *work)
309 {
310 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
311 struct scsi_qla_host, unknown_atio_work);
312
313 qlt_try_to_dequeue_unknown_atios(vha, 0);
314 }
315
316 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
317 struct atio_from_isp *atio, uint8_t ha_locked)
318 {
319 ql_dbg(ql_dbg_tgt, vha, 0xe072,
320 "%s: qla_target(%d): type %x ox_id %04x\n",
321 __func__, vha->vp_idx, atio->u.raw.entry_type,
322 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
323
324 switch (atio->u.raw.entry_type) {
325 case ATIO_TYPE7:
326 {
327 struct scsi_qla_host *host = qla_find_host_by_d_id(vha,
328 atio->u.isp24.fcp_hdr.d_id);
329 if (unlikely(NULL == host)) {
330 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
331 "qla_target(%d): Received ATIO_TYPE7 "
332 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
333 atio->u.isp24.fcp_hdr.d_id.domain,
334 atio->u.isp24.fcp_hdr.d_id.area,
335 atio->u.isp24.fcp_hdr.d_id.al_pa);
336
337
338 qlt_queue_unknown_atio(vha, atio, ha_locked);
339 break;
340 }
341 if (unlikely(!list_empty(&vha->unknown_atio_list)))
342 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
343
344 qlt_24xx_atio_pkt(host, atio, ha_locked);
345 break;
346 }
347
348 case IMMED_NOTIFY_TYPE:
349 {
350 struct scsi_qla_host *host = vha;
351 struct imm_ntfy_from_isp *entry =
352 (struct imm_ntfy_from_isp *)atio;
353
354 qlt_issue_marker(vha, ha_locked);
355
356 if ((entry->u.isp24.vp_index != 0xFF) &&
357 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) {
358 host = qla_find_host_by_vp_idx(vha,
359 entry->u.isp24.vp_index);
360 if (unlikely(!host)) {
361 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
362 "qla_target(%d): Received "
363 "ATIO (IMMED_NOTIFY_TYPE) "
364 "with unknown vp_index %d\n",
365 vha->vp_idx, entry->u.isp24.vp_index);
366 break;
367 }
368 }
369 qlt_24xx_atio_pkt(host, atio, ha_locked);
370 break;
371 }
372
373 case VP_RPT_ID_IOCB_TYPE:
374 qla24xx_report_id_acquisition(vha,
375 (struct vp_rpt_id_entry_24xx *)atio);
376 break;
377
378 case ABTS_RECV_24XX:
379 {
380 struct abts_recv_from_24xx *entry =
381 (struct abts_recv_from_24xx *)atio;
382 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha,
383 entry->vp_index);
384 unsigned long flags;
385
386 if (unlikely(!host)) {
387 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
388 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
389 "received, with unknown vp_index %d\n",
390 vha->vp_idx, entry->vp_index);
391 break;
392 }
393 if (!ha_locked)
394 spin_lock_irqsave(&host->hw->hardware_lock, flags);
395 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
396 if (!ha_locked)
397 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
398 break;
399 }
400
401 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
402
403 default:
404 ql_dbg(ql_dbg_tgt, vha, 0xe040,
405 "qla_target(%d): Received unknown ATIO atio "
406 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
407 break;
408 }
409
410 return false;
411 }
412
413 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
414 struct rsp_que *rsp, response_t *pkt)
415 {
416 switch (pkt->entry_type) {
417 case CTIO_CRC2:
418 ql_dbg(ql_dbg_tgt, vha, 0xe073,
419 "qla_target(%d):%s: CRC2 Response pkt\n",
420 vha->vp_idx, __func__);
421 fallthrough;
422 case CTIO_TYPE7:
423 {
424 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
425 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha,
426 entry->vp_index);
427 if (unlikely(!host)) {
428 ql_dbg(ql_dbg_tgt, vha, 0xe041,
429 "qla_target(%d): Response pkt (CTIO_TYPE7) "
430 "received, with unknown vp_index %d\n",
431 vha->vp_idx, entry->vp_index);
432 break;
433 }
434 qlt_response_pkt(host, rsp, pkt);
435 break;
436 }
437
438 case IMMED_NOTIFY_TYPE:
439 {
440 struct scsi_qla_host *host;
441 struct imm_ntfy_from_isp *entry =
442 (struct imm_ntfy_from_isp *)pkt;
443
444 host = qla_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
445 if (unlikely(!host)) {
446 ql_dbg(ql_dbg_tgt, vha, 0xe042,
447 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
448 "received, with unknown vp_index %d\n",
449 vha->vp_idx, entry->u.isp24.vp_index);
450 break;
451 }
452 qlt_response_pkt(host, rsp, pkt);
453 break;
454 }
455
456 case NOTIFY_ACK_TYPE:
457 {
458 struct scsi_qla_host *host = vha;
459 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
460
461 if (0xFF != entry->u.isp24.vp_index) {
462 host = qla_find_host_by_vp_idx(vha,
463 entry->u.isp24.vp_index);
464 if (unlikely(!host)) {
465 ql_dbg(ql_dbg_tgt, vha, 0xe043,
466 "qla_target(%d): Response "
467 "pkt (NOTIFY_ACK_TYPE) "
468 "received, with unknown "
469 "vp_index %d\n", vha->vp_idx,
470 entry->u.isp24.vp_index);
471 break;
472 }
473 }
474 qlt_response_pkt(host, rsp, pkt);
475 break;
476 }
477
478 case ABTS_RECV_24XX:
479 {
480 struct abts_recv_from_24xx *entry =
481 (struct abts_recv_from_24xx *)pkt;
482 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha,
483 entry->vp_index);
484 if (unlikely(!host)) {
485 ql_dbg(ql_dbg_tgt, vha, 0xe044,
486 "qla_target(%d): Response pkt "
487 "(ABTS_RECV_24XX) received, with unknown "
488 "vp_index %d\n", vha->vp_idx, entry->vp_index);
489 break;
490 }
491 qlt_response_pkt(host, rsp, pkt);
492 break;
493 }
494
495 case ABTS_RESP_24XX:
496 {
497 struct abts_resp_to_24xx *entry =
498 (struct abts_resp_to_24xx *)pkt;
499 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha,
500 entry->vp_index);
501 if (unlikely(!host)) {
502 ql_dbg(ql_dbg_tgt, vha, 0xe045,
503 "qla_target(%d): Response pkt "
504 "(ABTS_RECV_24XX) received, with unknown "
505 "vp_index %d\n", vha->vp_idx, entry->vp_index);
506 break;
507 }
508 qlt_response_pkt(host, rsp, pkt);
509 break;
510 }
511 default:
512 qlt_response_pkt(vha, rsp, pkt);
513 break;
514 }
515
516 }
517
518 /*
519 * All qlt_plogi_ack_t operations are protected by hardware_lock
520 */
521 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
522 struct imm_ntfy_from_isp *ntfy, int type)
523 {
524 struct qla_work_evt *e;
525
526 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
527 if (!e)
528 return QLA_FUNCTION_FAILED;
529
530 e->u.nack.fcport = fcport;
531 e->u.nack.type = type;
532 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
533 return qla2x00_post_work(vha, e);
534 }
535
536 static void qla2x00_async_nack_sp_done(srb_t *sp, int res)
537 {
538 struct scsi_qla_host *vha = sp->vha;
539 unsigned long flags;
540
541 ql_dbg(ql_dbg_disc, vha, 0x20f2,
542 "Async done-%s res %x %8phC type %d\n",
543 sp->name, res, sp->fcport->port_name, sp->type);
544
545 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
546 sp->fcport->flags &= ~FCF_ASYNC_SENT;
547 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
548
549 switch (sp->type) {
550 case SRB_NACK_PLOGI:
551 sp->fcport->login_gen++;
552 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
553 sp->fcport->logout_on_delete = 1;
554 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
555 sp->fcport->send_els_logo = 0;
556
557 if (sp->fcport->flags & FCF_FCSP_DEVICE) {
558 ql_dbg(ql_dbg_edif, vha, 0x20ef,
559 "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__,
560 sp->fcport->port_name);
561 qla2x00_set_fcport_disc_state(sp->fcport,
562 DSC_LOGIN_AUTH_PEND);
563 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE,
564 sp->fcport->d_id.b24);
565 qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24,
566 0, sp->fcport);
567 }
568 break;
569
570 case SRB_NACK_PRLI:
571 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
572 sp->fcport->deleted = 0;
573 sp->fcport->send_els_logo = 0;
574
575 if (!sp->fcport->login_succ &&
576 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
577 sp->fcport->login_succ = 1;
578
579 vha->fcport_count++;
580 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
581 qla24xx_sched_upd_fcport(sp->fcport);
582 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
583 } else {
584 sp->fcport->login_retry = 0;
585 qla2x00_set_fcport_disc_state(sp->fcport,
586 DSC_LOGIN_COMPLETE);
587 sp->fcport->deleted = 0;
588 sp->fcport->logout_on_delete = 1;
589 }
590 break;
591
592 case SRB_NACK_LOGO:
593 sp->fcport->login_gen++;
594 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
595 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
596 break;
597 }
598 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
599
600 kref_put(&sp->cmd_kref, qla2x00_sp_release);
601 }
602
603 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
604 struct imm_ntfy_from_isp *ntfy, int type)
605 {
606 int rval = QLA_FUNCTION_FAILED;
607 srb_t *sp;
608 char *c = NULL;
609
610 fcport->flags |= FCF_ASYNC_SENT;
611 switch (type) {
612 case SRB_NACK_PLOGI:
613 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
614 c = "PLOGI";
615 if (vha->hw->flags.edif_enabled &&
616 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP))
617 fcport->flags |= FCF_FCSP_DEVICE;
618 break;
619 case SRB_NACK_PRLI:
620 fcport->fw_login_state = DSC_LS_PRLI_PEND;
621 fcport->deleted = 0;
622 c = "PRLI";
623 break;
624 case SRB_NACK_LOGO:
625 fcport->fw_login_state = DSC_LS_LOGO_PEND;
626 c = "LOGO";
627 break;
628 }
629
630 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
631 if (!sp)
632 goto done;
633
634 sp->type = type;
635 sp->name = "nack";
636 qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2,
637 qla2x00_async_nack_sp_done);
638
639 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
640
641 ql_dbg(ql_dbg_disc, vha, 0x20f4,
642 "Async-%s %8phC hndl %x %s\n",
643 sp->name, fcport->port_name, sp->handle, c);
644
645 rval = qla2x00_start_sp(sp);
646 if (rval != QLA_SUCCESS)
647 goto done_free_sp;
648
649 return rval;
650
651 done_free_sp:
652 kref_put(&sp->cmd_kref, qla2x00_sp_release);
653 done:
654 fcport->flags &= ~FCF_ASYNC_SENT;
655 return rval;
656 }
657
658 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
659 {
660 fc_port_t *t;
661
662 switch (e->u.nack.type) {
663 case SRB_NACK_PRLI:
664 t = e->u.nack.fcport;
665 flush_work(&t->del_work);
666 flush_work(&t->free_work);
667 mutex_lock(&vha->vha_tgt.tgt_mutex);
668 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
669 mutex_unlock(&vha->vha_tgt.tgt_mutex);
670 if (t) {
671 ql_log(ql_log_info, vha, 0xd034,
672 "%s create sess success %p", __func__, t);
673 /* create sess has an extra kref */
674 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
675 }
676 break;
677 }
678 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
679 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type);
680 }
681
682 void qla24xx_delete_sess_fn(struct work_struct *work)
683 {
684 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
685 struct qla_hw_data *ha = NULL;
686
687 if (!fcport || !fcport->vha || !fcport->vha->hw)
688 return;
689
690 ha = fcport->vha->hw;
691
692 if (fcport->se_sess) {
693 ha->tgt.tgt_ops->shutdown_sess(fcport);
694 ha->tgt.tgt_ops->put_sess(fcport);
695 } else {
696 qlt_unreg_sess(fcport);
697 }
698 }
699
700 /*
701 * Called from qla2x00_reg_remote_port()
702 */
703 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
704 {
705 struct qla_hw_data *ha = vha->hw;
706 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
707 struct fc_port *sess = fcport;
708 unsigned long flags;
709
710 if (!vha->hw->tgt.tgt_ops)
711 return;
712
713 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
714 if (tgt->tgt_stop) {
715 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
716 return;
717 }
718
719 if (fcport->disc_state == DSC_DELETE_PEND) {
720 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
721 return;
722 }
723
724 if (!sess->se_sess) {
725 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
726
727 mutex_lock(&vha->vha_tgt.tgt_mutex);
728 sess = qlt_create_sess(vha, fcport, false);
729 mutex_unlock(&vha->vha_tgt.tgt_mutex);
730
731 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
732 } else {
733 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
734 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
735 return;
736 }
737
738 if (!kref_get_unless_zero(&sess->sess_kref)) {
739 ql_dbg(ql_dbg_disc, vha, 0x2107,
740 "%s: kref_get fail sess %8phC \n",
741 __func__, sess->port_name);
742 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
743 return;
744 }
745
746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
747 "qla_target(%u): %ssession for port %8phC "
748 "(loop ID %d) reappeared\n", vha->vp_idx,
749 sess->local ? "local " : "", sess->port_name, sess->loop_id);
750
751 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
752 "Reappeared sess %p\n", sess);
753
754 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
755 fcport->loop_id,
756 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
757 }
758
759 if (sess && sess->local) {
760 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
761 "qla_target(%u): local session for "
762 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
763 fcport->port_name, sess->loop_id);
764 sess->local = 0;
765 }
766 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
767
768 ha->tgt.tgt_ops->put_sess(sess);
769 }
770
771 /*
772 * This is a zero-base ref-counting solution, since hardware_lock
773 * guarantees that ref_count is not modified concurrently.
774 * Upon successful return content of iocb is undefined
775 */
776 static struct qlt_plogi_ack_t *
777 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
778 struct imm_ntfy_from_isp *iocb)
779 {
780 struct qlt_plogi_ack_t *pla;
781
782 lockdep_assert_held(&vha->hw->hardware_lock);
783
784 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
785 if (pla->id.b24 == id->b24) {
786 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d,
787 "%s %d %8phC Term INOT due to new INOT",
788 __func__, __LINE__,
789 pla->iocb.u.isp24.port_name);
790 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
791 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
792 return pla;
793 }
794 }
795
796 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
797 if (!pla) {
798 ql_dbg(ql_dbg_async, vha, 0x5088,
799 "qla_target(%d): Allocation of plogi_ack failed\n",
800 vha->vp_idx);
801 return NULL;
802 }
803
804 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
805 pla->id = *id;
806 list_add_tail(&pla->list, &vha->plogi_ack_list);
807
808 return pla;
809 }
810
811 void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
812 struct qlt_plogi_ack_t *pla)
813 {
814 struct imm_ntfy_from_isp *iocb = &pla->iocb;
815 port_id_t port_id;
816 uint16_t loop_id;
817 fc_port_t *fcport = pla->fcport;
818
819 BUG_ON(!pla->ref_count);
820 pla->ref_count--;
821
822 if (pla->ref_count)
823 return;
824
825 ql_dbg(ql_dbg_disc, vha, 0x5089,
826 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
827 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
828 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
829 iocb->u.isp24.port_id[0],
830 le16_to_cpu(iocb->u.isp24.nport_handle),
831 iocb->u.isp24.exchange_address, iocb->ox_id);
832
833 port_id.b.domain = iocb->u.isp24.port_id[2];
834 port_id.b.area = iocb->u.isp24.port_id[1];
835 port_id.b.al_pa = iocb->u.isp24.port_id[0];
836 port_id.b.rsvd_1 = 0;
837
838 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
839
840 fcport->loop_id = loop_id;
841 fcport->d_id = port_id;
842 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
843 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
844 else
845 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
846
847 list_for_each_entry(fcport, &vha->vp_fcports, list) {
848 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
849 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
850 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
851 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
852 }
853
854 list_del(&pla->list);
855 kmem_cache_free(qla_tgt_plogi_cachep, pla);
856 }
857
858 void
859 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
860 struct fc_port *sess, enum qlt_plogi_link_t link)
861 {
862 struct imm_ntfy_from_isp *iocb = &pla->iocb;
863 /* Inc ref_count first because link might already be pointing at pla */
864 pla->ref_count++;
865
866 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
867 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
868 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
869 sess, link, sess->port_name,
870 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
871 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
872 pla->ref_count, pla, link);
873
874 if (link == QLT_PLOGI_LINK_CONFLICT) {
875 switch (sess->disc_state) {
876 case DSC_DELETED:
877 case DSC_DELETE_PEND:
878 pla->ref_count--;
879 return;
880 default:
881 break;
882 }
883 }
884
885 if (sess->plogi_link[link])
886 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
887
888 if (link == QLT_PLOGI_LINK_SAME_WWN)
889 pla->fcport = sess;
890
891 sess->plogi_link[link] = pla;
892 }
893
894 typedef struct {
895 /* These fields must be initialized by the caller */
896 port_id_t id;
897 /*
898 * number of cmds dropped while we were waiting for
899 * initiator to ack LOGO initialize to 1 if LOGO is
900 * triggered by a command, otherwise, to 0
901 */
902 int cmd_count;
903
904 /* These fields are used by callee */
905 struct list_head list;
906 } qlt_port_logo_t;
907
908 static void
909 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
910 {
911 qlt_port_logo_t *tmp;
912 int res;
913
914 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) {
915 res = 0;
916 goto out;
917 }
918
919 mutex_lock(&vha->vha_tgt.tgt_mutex);
920
921 list_for_each_entry(tmp, &vha->logo_list, list) {
922 if (tmp->id.b24 == logo->id.b24) {
923 tmp->cmd_count += logo->cmd_count;
924 mutex_unlock(&vha->vha_tgt.tgt_mutex);
925 return;
926 }
927 }
928
929 list_add_tail(&logo->list, &vha->logo_list);
930
931 mutex_unlock(&vha->vha_tgt.tgt_mutex);
932
933 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
934
935 mutex_lock(&vha->vha_tgt.tgt_mutex);
936 list_del(&logo->list);
937 mutex_unlock(&vha->vha_tgt.tgt_mutex);
938
939 out:
940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
943 logo->cmd_count, res);
944 }
945
946 void qlt_free_session_done(struct work_struct *work)
947 {
948 struct fc_port *sess = container_of(work, struct fc_port,
949 free_work);
950 struct qla_tgt *tgt = sess->tgt;
951 struct scsi_qla_host *vha = sess->vha;
952 struct qla_hw_data *ha = vha->hw;
953 unsigned long flags;
954 bool logout_started = false;
955 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
956 struct qlt_plogi_ack_t *own =
957 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
958
959 ql_dbg(ql_dbg_disc, vha, 0xf084,
960 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
961 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
962 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
963 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
964 sess->logout_on_delete, sess->keep_nport_handle,
965 sess->send_els_logo);
966
967 if (!IS_SW_RESV_ADDR(sess->d_id)) {
968 qla2x00_mark_device_lost(vha, sess, 0);
969
970 if (sess->send_els_logo) {
971 qlt_port_logo_t logo;
972
973 logo.id = sess->d_id;
974 logo.cmd_count = 0;
975 INIT_LIST_HEAD(&logo.list);
976 if (!own)
977 qlt_send_first_logo(vha, &logo);
978 sess->send_els_logo = 0;
979 }
980
981 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
982 int rc;
983
984 if (!own ||
985 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) {
986 sess->logout_completed = 0;
987 rc = qla2x00_post_async_logout_work(vha, sess,
988 NULL);
989 if (rc != QLA_SUCCESS)
990 ql_log(ql_log_warn, vha, 0xf085,
991 "Schedule logo failed sess %p rc %d\n",
992 sess, rc);
993 else
994 logout_started = true;
995 } else if (own && (own->iocb.u.isp24.status_subcode ==
996 ELS_PRLI) && ha->flags.rida_fmt2) {
997 rc = qla2x00_post_async_prlo_work(vha, sess,
998 NULL);
999 if (rc != QLA_SUCCESS)
1000 ql_log(ql_log_warn, vha, 0xf085,
1001 "Schedule PRLO failed sess %p rc %d\n",
1002 sess, rc);
1003 else
1004 logout_started = true;
1005 }
1006 } /* if sess->logout_on_delete */
1007
1008 if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
1009 !(sess->nvme_flag & NVME_FLAG_DELETING)) {
1010 sess->nvme_flag |= NVME_FLAG_DELETING;
1011 qla_nvme_unregister_remote_port(sess);
1012 }
1013
1014 if (ha->flags.edif_enabled &&
1015 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) {
1016 sess->edif.authok = 0;
1017 if (!ha->flags.host_shutting_down) {
1018 ql_dbg(ql_dbg_edif, vha, 0x911e,
1019 "%s wwpn %8phC calling qla2x00_release_all_sadb\n",
1020 __func__, sess->port_name);
1021 qla2x00_release_all_sadb(vha, sess);
1022 } else {
1023 ql_dbg(ql_dbg_edif, vha, 0x911e,
1024 "%s bypassing release_all_sadb\n",
1025 __func__);
1026 }
1027
1028 qla_edif_clear_appdata(vha, sess);
1029 qla_edif_sess_down(vha, sess);
1030 }
1031 }
1032
1033 /*
1034 * Release the target session for FC Nexus from fabric module code.
1035 */
1036 if (sess->se_sess != NULL)
1037 ha->tgt.tgt_ops->free_session(sess);
1038
1039 if (logout_started) {
1040 bool traced = false;
1041 u16 cnt = 0;
1042
1043 while (!READ_ONCE(sess->logout_completed)) {
1044 if (!traced) {
1045 ql_dbg(ql_dbg_disc, vha, 0xf086,
1046 "%s: waiting for sess %p logout\n",
1047 __func__, sess);
1048 traced = true;
1049 }
1050 msleep(100);
1051 cnt++;
1052 /*
1053 * Driver timeout is set to 22 Sec, update count value to loop
1054 * long enough for log-out to complete before advancing. Otherwise,
1055 * straddling logout can interfere with re-login attempt.
1056 */
1057 if (cnt > 230)
1058 break;
1059 }
1060
1061 ql_dbg(ql_dbg_disc, vha, 0xf087,
1062 "%s: sess %p logout completed\n", __func__, sess);
1063 }
1064
1065 /* check for any straggling io left behind */
1066 if (!(sess->flags & FCF_FCP2_DEVICE) &&
1067 qla2x00_eh_wait_for_pending_commands(sess->vha, sess->d_id.b24, 0, WAIT_TARGET)) {
1068 ql_log(ql_log_warn, vha, 0x3027,
1069 "IO not return. Resetting.\n");
1070 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1071 qla2xxx_wake_dpc(vha);
1072 qla2x00_wait_for_chip_reset(vha);
1073 }
1074
1075 if (sess->logo_ack_needed) {
1076 sess->logo_ack_needed = 0;
1077 qla24xx_async_notify_ack(vha, sess,
1078 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
1079 }
1080
1081 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1082 if (sess->se_sess) {
1083 sess->se_sess = NULL;
1084 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1085 tgt->sess_count--;
1086 }
1087
1088 qla2x00_set_fcport_disc_state(sess, DSC_DELETED);
1089 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1090
1091 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1092 vha->fcport_count--;
1093 sess->login_succ = 0;
1094 }
1095
1096 qla2x00_clear_loop_id(sess);
1097
1098 if (sess->conflict) {
1099 sess->conflict->login_pause = 0;
1100 sess->conflict = NULL;
1101 if (!test_bit(UNLOADING, &vha->dpc_flags))
1102 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1103 }
1104
1105 {
1106 struct qlt_plogi_ack_t *con =
1107 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
1108 struct imm_ntfy_from_isp *iocb;
1109
1110 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
1111
1112 if (con) {
1113 iocb = &con->iocb;
1114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
1115 "se_sess %p / sess %p port %8phC is gone,"
1116 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1117 sess->se_sess, sess, sess->port_name,
1118 own ? "releasing own PLOGI" : "no own PLOGI pending",
1119 own ? own->ref_count : -1,
1120 iocb->u.isp24.port_name, con->ref_count);
1121 qlt_plogi_ack_unref(vha, con);
1122 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
1123 } else {
1124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1125 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1126 sess->se_sess, sess, sess->port_name,
1127 own ? "releasing own PLOGI" :
1128 "no own PLOGI pending",
1129 own ? own->ref_count : -1);
1130 }
1131
1132 if (own) {
1133 sess->fw_login_state = DSC_LS_PLOGI_PEND;
1134 qlt_plogi_ack_unref(vha, own);
1135 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1136 }
1137 }
1138
1139 sess->explicit_logout = 0;
1140 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1141
1142 qla2x00_dfs_remove_rport(vha, sess);
1143
1144 spin_lock_irqsave(&vha->work_lock, flags);
1145 sess->flags &= ~FCF_ASYNC_SENT;
1146 sess->deleted = QLA_SESS_DELETED;
1147 sess->free_pending = 0;
1148 spin_unlock_irqrestore(&vha->work_lock, flags);
1149
1150 ql_dbg(ql_dbg_disc, vha, 0xf001,
1151 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1152 sess, sess->port_name, vha->fcport_count);
1153
1154 if (tgt && (tgt->sess_count == 0))
1155 wake_up_all(&tgt->waitQ);
1156
1157 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) &&
1158 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) &&
1159 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
1160 switch (vha->host->active_mode) {
1161 case MODE_INITIATOR:
1162 case MODE_DUAL:
1163 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1164 qla2xxx_wake_dpc(vha);
1165 break;
1166 case MODE_TARGET:
1167 default:
1168 /* no-op */
1169 break;
1170 }
1171 }
1172
1173 if (vha->fcport_count == 0)
1174 wake_up_all(&vha->fcport_waitQ);
1175 }
1176
1177 /* ha->tgt.sess_lock supposed to be held on entry */
1178 void qlt_unreg_sess(struct fc_port *sess)
1179 {
1180 struct scsi_qla_host *vha = sess->vha;
1181 unsigned long flags;
1182
1183 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
1184 "%s sess %p for deletion %8phC\n",
1185 __func__, sess, sess->port_name);
1186
1187 spin_lock_irqsave(&sess->vha->work_lock, flags);
1188 if (sess->free_pending) {
1189 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1190 return;
1191 }
1192 sess->free_pending = 1;
1193 /*
1194 * Use FCF_ASYNC_SENT flag to block other cmds used in sess
1195 * management from being sent.
1196 */
1197 sess->flags |= FCF_ASYNC_SENT;
1198 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1199 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1200
1201 if (sess->se_sess)
1202 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
1203
1204 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
1205 sess->last_rscn_gen = sess->rscn_gen;
1206 sess->last_login_gen = sess->login_gen;
1207
1208 queue_work(sess->vha->hw->wq, &sess->free_work);
1209 }
1210 EXPORT_SYMBOL(qlt_unreg_sess);
1211
1212 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1213 {
1214 struct qla_hw_data *ha = vha->hw;
1215 struct fc_port *sess = NULL;
1216 uint16_t loop_id;
1217 int res = 0;
1218 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
1219 unsigned long flags;
1220
1221 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1222 if (loop_id == 0xFFFF) {
1223 /* Global event */
1224 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
1225 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1226 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
1227 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1228 } else {
1229 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1230 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
1231 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1232 }
1233
1234 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1235 "Using sess for qla_tgt_reset: %p\n", sess);
1236 if (!sess) {
1237 res = -ESRCH;
1238 return res;
1239 }
1240
1241 ql_dbg(ql_dbg_tgt, vha, 0xe047,
1242 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1243 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
1244 mcmd, loop_id);
1245
1246 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
1247 }
1248
1249 static void qla24xx_chk_fcp_state(struct fc_port *sess)
1250 {
1251 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
1252 sess->logout_on_delete = 0;
1253 sess->logo_ack_needed = 0;
1254 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1255 }
1256 }
1257
1258 void qlt_schedule_sess_for_deletion(struct fc_port *sess)
1259 {
1260 struct qla_tgt *tgt = sess->tgt;
1261 unsigned long flags;
1262 u16 sec;
1263
1264 switch (sess->disc_state) {
1265 case DSC_DELETE_PEND:
1266 return;
1267 case DSC_DELETED:
1268 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1269 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) {
1270 if (tgt && tgt->tgt_stop && tgt->sess_count == 0)
1271 wake_up_all(&tgt->waitQ);
1272
1273 if (sess->vha->fcport_count == 0)
1274 wake_up_all(&sess->vha->fcport_waitQ);
1275 return;
1276 }
1277 break;
1278 case DSC_UPD_FCPORT:
1279 /*
1280 * This port is not done reporting to upper layer.
1281 * let it finish
1282 */
1283 sess->next_disc_state = DSC_DELETE_PEND;
1284 sec = jiffies_to_msecs(jiffies -
1285 sess->jiffies_at_registration)/1000;
1286 if (sess->sec_since_registration < sec && sec && !(sec % 5)) {
1287 sess->sec_since_registration = sec;
1288 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
1289 "%s %8phC : Slow Rport registration(%d Sec)\n",
1290 __func__, sess->port_name, sec);
1291 }
1292 return;
1293 default:
1294 break;
1295 }
1296
1297 spin_lock_irqsave(&sess->vha->work_lock, flags);
1298 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1299 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1300 return;
1301 }
1302 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1303 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1304
1305 sess->prli_pend_timer = 0;
1306 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
1307
1308 qla24xx_chk_fcp_state(sess);
1309
1310 ql_dbg(ql_log_warn, sess->vha, 0xe001,
1311 "Scheduling sess %p for deletion %8phC fc4_type %x\n",
1312 sess, sess->port_name, sess->fc4_type);
1313
1314 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
1315 }
1316
1317 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
1318 {
1319 struct fc_port *sess;
1320 scsi_qla_host_t *vha = tgt->vha;
1321
1322 list_for_each_entry(sess, &vha->vp_fcports, list) {
1323 if (sess->se_sess)
1324 qlt_schedule_sess_for_deletion(sess);
1325 }
1326
1327 /* At this point tgt could be already dead */
1328 }
1329
1330 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id,
1331 uint16_t *loop_id)
1332 {
1333 struct qla_hw_data *ha = vha->hw;
1334 dma_addr_t gid_list_dma;
1335 struct gid_list_info *gid_list, *gid;
1336 int res, rc, i;
1337 uint16_t entries;
1338
1339 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1340 &gid_list_dma, GFP_KERNEL);
1341 if (!gid_list) {
1342 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1343 "qla_target(%d): DMA Alloc failed of %u\n",
1344 vha->vp_idx, qla2x00_gid_list_size(ha));
1345 return -ENOMEM;
1346 }
1347
1348 /* Get list of logged in devices */
1349 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
1350 if (rc != QLA_SUCCESS) {
1351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1352 "qla_target(%d): get_id_list() failed: %x\n",
1353 vha->vp_idx, rc);
1354 res = -EBUSY;
1355 goto out_free_id_list;
1356 }
1357
1358 gid = gid_list;
1359 res = -ENOENT;
1360 for (i = 0; i < entries; i++) {
1361 if (gid->al_pa == s_id.al_pa &&
1362 gid->area == s_id.area &&
1363 gid->domain == s_id.domain) {
1364 *loop_id = le16_to_cpu(gid->loop_id);
1365 res = 0;
1366 break;
1367 }
1368 gid = (void *)gid + ha->gid_list_info_size;
1369 }
1370
1371 out_free_id_list:
1372 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1373 gid_list, gid_list_dma);
1374 return res;
1375 }
1376
1377 /*
1378 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1379 * Caller must put it.
1380 */
1381 static struct fc_port *qlt_create_sess(
1382 struct scsi_qla_host *vha,
1383 fc_port_t *fcport,
1384 bool local)
1385 {
1386 struct qla_hw_data *ha = vha->hw;
1387 struct fc_port *sess = fcport;
1388 unsigned long flags;
1389
1390 if (vha->vha_tgt.qla_tgt->tgt_stop)
1391 return NULL;
1392
1393 if (fcport->se_sess) {
1394 if (!kref_get_unless_zero(&sess->sess_kref)) {
1395 ql_dbg(ql_dbg_disc, vha, 0x20f6,
1396 "%s: kref_get_unless_zero failed for %8phC\n",
1397 __func__, sess->port_name);
1398 return NULL;
1399 }
1400 return fcport;
1401 }
1402 sess->tgt = vha->vha_tgt.qla_tgt;
1403 sess->local = local;
1404
1405 /*
1406 * Under normal circumstances we want to logout from firmware when
1407 * session eventually ends and release corresponding nport handle.
1408 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
1409 * code will adjust these flags as necessary.
1410 */
1411 sess->logout_on_delete = 1;
1412 sess->keep_nport_handle = 0;
1413 sess->logout_completed = 0;
1414
1415 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1416 &fcport->port_name[0], sess) < 0) {
1417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
1418 "(%d) %8phC check_initiator_node_acl failed\n",
1419 vha->vp_idx, fcport->port_name);
1420 return NULL;
1421 } else {
1422 kref_init(&fcport->sess_kref);
1423 /*
1424 * Take an extra reference to ->sess_kref here to handle
1425 * fc_port access across ->tgt.sess_lock reaquire.
1426 */
1427 if (!kref_get_unless_zero(&sess->sess_kref)) {
1428 ql_dbg(ql_dbg_disc, vha, 0x20f7,
1429 "%s: kref_get_unless_zero failed for %8phC\n",
1430 __func__, sess->port_name);
1431 return NULL;
1432 }
1433
1434 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1435 if (!IS_SW_RESV_ADDR(sess->d_id))
1436 vha->vha_tgt.qla_tgt->sess_count++;
1437
1438 qlt_do_generation_tick(vha, &sess->generation);
1439 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1440 }
1441
1442 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1443 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1444 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1445 vha->vha_tgt.qla_tgt->sess_count);
1446
1447 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
1448 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1449 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1450 vha->vp_idx, local ? "local " : "", fcport->port_name,
1451 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1452 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
1453
1454 return sess;
1455 }
1456
1457 /*
1458 * max_gen - specifies maximum session generation
1459 * at which this deletion requestion is still valid
1460 */
1461 void
1462 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
1463 {
1464 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1465 struct fc_port *sess = fcport;
1466 unsigned long flags;
1467
1468 if (!vha->hw->tgt.tgt_ops)
1469 return;
1470
1471 if (!tgt)
1472 return;
1473
1474 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
1475 if (tgt->tgt_stop) {
1476 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1477 return;
1478 }
1479 if (!sess->se_sess) {
1480 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1481 return;
1482 }
1483
1484 if (max_gen - sess->generation < 0) {
1485 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1486 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1487 "Ignoring stale deletion request for se_sess %p / sess %p"
1488 " for port %8phC, req_gen %d, sess_gen %d\n",
1489 sess->se_sess, sess, sess->port_name, max_gen,
1490 sess->generation);
1491 return;
1492 }
1493
1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1495
1496 sess->local = 1;
1497 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1498 qlt_schedule_sess_for_deletion(sess);
1499 }
1500
1501 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1502 {
1503 struct qla_hw_data *ha = tgt->ha;
1504 unsigned long flags;
1505 int res;
1506 /*
1507 * We need to protect against race, when tgt is freed before or
1508 * inside wake_up()
1509 */
1510 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1511 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1512 "tgt %p, sess_count=%d\n",
1513 tgt, tgt->sess_count);
1514 res = (tgt->sess_count == 0);
1515 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1516
1517 return res;
1518 }
1519
1520 /* Called by tcm_qla2xxx configfs code */
1521 int qlt_stop_phase1(struct qla_tgt *tgt)
1522 {
1523 struct scsi_qla_host *vha = tgt->vha;
1524 struct qla_hw_data *ha = tgt->ha;
1525 unsigned long flags;
1526
1527 mutex_lock(&ha->optrom_mutex);
1528 mutex_lock(&qla_tgt_mutex);
1529
1530 if (tgt->tgt_stop || tgt->tgt_stopped) {
1531 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1532 "Already in tgt->tgt_stop or tgt_stopped state\n");
1533 mutex_unlock(&qla_tgt_mutex);
1534 mutex_unlock(&ha->optrom_mutex);
1535 return -EPERM;
1536 }
1537
1538 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1539 vha->host_no, vha);
1540 /*
1541 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1542 * Lock is needed, because we still can get an incoming packet.
1543 */
1544 mutex_lock(&vha->vha_tgt.tgt_mutex);
1545 tgt->tgt_stop = 1;
1546 qlt_clear_tgt_db(tgt);
1547 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1548 mutex_unlock(&qla_tgt_mutex);
1549
1550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1551 "Waiting for sess works (tgt %p)", tgt);
1552 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1553 do {
1554 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1555 flush_work(&tgt->sess_work);
1556 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1557 } while (!list_empty(&tgt->sess_works_list));
1558 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1559
1560 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1561 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
1562
1563 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1564
1565 /* Big hammer */
1566 if (!ha->flags.host_shutting_down &&
1567 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
1568 qlt_disable_vha(vha);
1569
1570 /* Wait for sessions to clear out (just in case) */
1571 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1572 mutex_unlock(&ha->optrom_mutex);
1573
1574 return 0;
1575 }
1576 EXPORT_SYMBOL(qlt_stop_phase1);
1577
1578 /* Called by tcm_qla2xxx configfs code */
1579 void qlt_stop_phase2(struct qla_tgt *tgt)
1580 {
1581 scsi_qla_host_t *vha = tgt->vha;
1582
1583 if (tgt->tgt_stopped) {
1584 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1585 "Already in tgt->tgt_stopped state\n");
1586 dump_stack();
1587 return;
1588 }
1589 if (!tgt->tgt_stop) {
1590 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1591 "%s: phase1 stop is not completed\n", __func__);
1592 dump_stack();
1593 return;
1594 }
1595
1596 mutex_lock(&tgt->ha->optrom_mutex);
1597 mutex_lock(&vha->vha_tgt.tgt_mutex);
1598 tgt->tgt_stop = 0;
1599 tgt->tgt_stopped = 1;
1600 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1601 mutex_unlock(&tgt->ha->optrom_mutex);
1602
1603 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
1604 tgt);
1605
1606 switch (vha->qlini_mode) {
1607 case QLA2XXX_INI_MODE_EXCLUSIVE:
1608 vha->flags.online = 1;
1609 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1610 break;
1611 default:
1612 break;
1613 }
1614 }
1615 EXPORT_SYMBOL(qlt_stop_phase2);
1616
1617 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1618 static void qlt_release(struct qla_tgt *tgt)
1619 {
1620 scsi_qla_host_t *vha = tgt->vha;
1621 void *node;
1622 u64 key = 0;
1623 u16 i;
1624 struct qla_qpair_hint *h;
1625 struct qla_hw_data *ha = vha->hw;
1626
1627 if (!tgt->tgt_stop && !tgt->tgt_stopped)
1628 qlt_stop_phase1(tgt);
1629
1630 if (!tgt->tgt_stopped)
1631 qlt_stop_phase2(tgt);
1632
1633 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1634 unsigned long flags;
1635
1636 h = &tgt->qphints[i];
1637 if (h->qpair) {
1638 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1639 list_del(&h->hint_elem);
1640 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1641 h->qpair = NULL;
1642 }
1643 }
1644 kfree(tgt->qphints);
1645 mutex_lock(&qla_tgt_mutex);
1646 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1647 mutex_unlock(&qla_tgt_mutex);
1648
1649 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1650 btree_remove64(&tgt->lun_qpair_map, key);
1651
1652 btree_destroy64(&tgt->lun_qpair_map);
1653
1654 if (vha->vp_idx)
1655 if (ha->tgt.tgt_ops &&
1656 ha->tgt.tgt_ops->remove_target &&
1657 vha->vha_tgt.target_lport_ptr)
1658 ha->tgt.tgt_ops->remove_target(vha);
1659
1660 vha->vha_tgt.qla_tgt = NULL;
1661
1662 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1663 "Release of tgt %p finished\n", tgt);
1664
1665 kfree(tgt);
1666 }
1667
1668 /* ha->hardware_lock supposed to be held on entry */
1669 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1670 const void *param, unsigned int param_size)
1671 {
1672 struct qla_tgt_sess_work_param *prm;
1673 unsigned long flags;
1674
1675 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1676 if (!prm) {
1677 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1678 "qla_target(%d): Unable to create session "
1679 "work, command will be refused", 0);
1680 return -ENOMEM;
1681 }
1682
1683 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1684 "Scheduling work (type %d, prm %p)"
1685 " to find session for param %p (size %d, tgt %p)\n",
1686 type, prm, param, param_size, tgt);
1687
1688 prm->type = type;
1689 memcpy(&prm->tm_iocb, param, param_size);
1690
1691 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1692 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1693 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1694
1695 schedule_work(&tgt->sess_work);
1696
1697 return 0;
1698 }
1699
1700 /*
1701 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1702 */
1703 static void qlt_send_notify_ack(struct qla_qpair *qpair,
1704 struct imm_ntfy_from_isp *ntfy,
1705 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1706 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1707 {
1708 struct scsi_qla_host *vha = qpair->vha;
1709 struct qla_hw_data *ha = vha->hw;
1710 request_t *pkt;
1711 struct nack_to_isp *nack;
1712
1713 if (!ha->flags.fw_started)
1714 return;
1715
1716 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1717
1718 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
1719 if (!pkt) {
1720 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1721 "qla_target(%d): %s failed: unable to allocate "
1722 "request packet\n", vha->vp_idx, __func__);
1723 return;
1724 }
1725
1726 if (vha->vha_tgt.qla_tgt != NULL)
1727 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1728
1729 pkt->entry_type = NOTIFY_ACK_TYPE;
1730 pkt->entry_count = 1;
1731
1732 nack = (struct nack_to_isp *)pkt;
1733 nack->ox_id = ntfy->ox_id;
1734
1735 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
1736 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1737 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1738 nack->u.isp24.flags = ntfy->u.isp24.flags &
1739 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
1740 }
1741 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1742 nack->u.isp24.status = ntfy->u.isp24.status;
1743 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1744 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1745 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1746 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1747 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1748 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1749 nack->u.isp24.srr_reject_code = srr_reject_code;
1750 nack->u.isp24.srr_reject_code_expl = srr_explan;
1751 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1752
1753 /* TODO qualify this with EDIF enable */
1754 if (ntfy->u.isp24.status_subcode == ELS_PLOGI &&
1755 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) {
1756 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP);
1757 }
1758
1759 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1760 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1761 vha->vp_idx, nack->u.isp24.status);
1762
1763 /* Memory Barrier */
1764 wmb();
1765 qla2x00_start_iocbs(vha, qpair->req);
1766 }
1767
1768 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd)
1769 {
1770 struct scsi_qla_host *vha = mcmd->vha;
1771 struct qla_hw_data *ha = vha->hw;
1772 struct abts_resp_to_24xx *resp;
1773 __le32 f_ctl;
1774 uint32_t h;
1775 uint8_t *p;
1776 int rc;
1777 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts;
1778 struct qla_qpair *qpair = mcmd->qpair;
1779
1780 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1781 "Sending task mgmt ABTS response (ha=%p, status=%x)\n",
1782 ha, mcmd->fc_tm_rsp);
1783
1784 rc = qlt_check_reserve_free_req(qpair, 1);
1785 if (rc) {
1786 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1787 "qla_target(%d): %s failed: unable to allocate request packet\n",
1788 vha->vp_idx, __func__);
1789 return -EAGAIN;
1790 }
1791
1792 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr;
1793 memset(resp, 0, sizeof(*resp));
1794
1795 h = qlt_make_handle(qpair);
1796 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1797 /*
1798 * CTIO type 7 from the firmware doesn't provide a way to
1799 * know the initiator's LOOP ID, hence we can't find
1800 * the session and, so, the command.
1801 */
1802 return -EAGAIN;
1803 } else {
1804 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd;
1805 }
1806
1807 resp->handle = make_handle(qpair->req->id, h);
1808 resp->entry_type = ABTS_RESP_24XX;
1809 resp->entry_count = 1;
1810 resp->nport_handle = abts->nport_handle;
1811 resp->vp_index = vha->vp_idx;
1812 resp->sof_type = abts->sof_type;
1813 resp->exchange_address = abts->exchange_address;
1814 resp->fcp_hdr_le = abts->fcp_hdr_le;
1815 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1816 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1817 F_CTL_SEQ_INITIATIVE);
1818 p = (uint8_t *)&f_ctl;
1819 resp->fcp_hdr_le.f_ctl[0] = *p++;
1820 resp->fcp_hdr_le.f_ctl[1] = *p++;
1821 resp->fcp_hdr_le.f_ctl[2] = *p;
1822
1823 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1824 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
1825
1826 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1827 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) {
1828 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1829 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1830 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1831 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
1832 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1833 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1834 } else {
1835 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1836 resp->payload.ba_rjt.reason_code =
1837 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1838 /* Other bytes are zero */
1839 }
1840
1841 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1842
1843 /* Memory Barrier */
1844 wmb();
1845 if (qpair->reqq_start_iocbs)
1846 qpair->reqq_start_iocbs(qpair);
1847 else
1848 qla2x00_start_iocbs(vha, qpair->req);
1849
1850 return rc;
1851 }
1852
1853 /*
1854 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1855 */
1856 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
1857 struct abts_recv_from_24xx *abts, uint32_t status,
1858 bool ids_reversed)
1859 {
1860 struct scsi_qla_host *vha = qpair->vha;
1861 struct qla_hw_data *ha = vha->hw;
1862 struct abts_resp_to_24xx *resp;
1863 __le32 f_ctl;
1864 uint8_t *p;
1865
1866 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1867 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1868 ha, abts, status);
1869
1870 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1871 NULL);
1872 if (!resp) {
1873 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1874 "qla_target(%d): %s failed: unable to allocate "
1875 "request packet", vha->vp_idx, __func__);
1876 return;
1877 }
1878
1879 resp->entry_type = ABTS_RESP_24XX;
1880 resp->handle = QLA_TGT_SKIP_HANDLE;
1881 resp->entry_count = 1;
1882 resp->nport_handle = abts->nport_handle;
1883 resp->vp_index = vha->vp_idx;
1884 resp->sof_type = abts->sof_type;
1885 resp->exchange_address = abts->exchange_address;
1886 resp->fcp_hdr_le = abts->fcp_hdr_le;
1887 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1888 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1889 F_CTL_SEQ_INITIATIVE);
1890 p = (uint8_t *)&f_ctl;
1891 resp->fcp_hdr_le.f_ctl[0] = *p++;
1892 resp->fcp_hdr_le.f_ctl[1] = *p++;
1893 resp->fcp_hdr_le.f_ctl[2] = *p;
1894 if (ids_reversed) {
1895 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id;
1896 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id;
1897 } else {
1898 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1899 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
1900 }
1901 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1902 if (status == FCP_TMF_CMPL) {
1903 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1904 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1905 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1906 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
1907 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1908 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1909 } else {
1910 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1911 resp->payload.ba_rjt.reason_code =
1912 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1913 /* Other bytes are zero */
1914 }
1915
1916 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1917
1918 /* Memory Barrier */
1919 wmb();
1920 if (qpair->reqq_start_iocbs)
1921 qpair->reqq_start_iocbs(qpair);
1922 else
1923 qla2x00_start_iocbs(vha, qpair->req);
1924 }
1925
1926 /*
1927 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1928 */
1929 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1930 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd)
1931 {
1932 struct ctio7_to_24xx *ctio;
1933 u16 tmp;
1934 struct abts_recv_from_24xx *entry;
1935
1936 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL);
1937 if (ctio == NULL) {
1938 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1939 "qla_target(%d): %s failed: unable to allocate "
1940 "request packet\n", vha->vp_idx, __func__);
1941 return;
1942 }
1943
1944 if (mcmd)
1945 /* abts from remote port */
1946 entry = &mcmd->orig_iocb.abts;
1947 else
1948 /* abts from this driver. */
1949 entry = (struct abts_recv_from_24xx *)pkt;
1950
1951 /*
1952 * We've got on entrance firmware's response on by us generated
1953 * ABTS response. So, in it ID fields are reversed.
1954 */
1955
1956 ctio->entry_type = CTIO_TYPE7;
1957 ctio->entry_count = 1;
1958 ctio->nport_handle = entry->nport_handle;
1959 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1960 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1961 ctio->vp_index = vha->vp_idx;
1962 ctio->exchange_addr = entry->exchange_addr_to_abort;
1963 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
1964
1965 if (mcmd) {
1966 ctio->initiator_id = entry->fcp_hdr_le.s_id;
1967
1968 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID)
1969 tmp |= (mcmd->abort_io_attr << 9);
1970 else if (qpair->retry_term_cnt & 1)
1971 tmp |= (0x4 << 9);
1972 } else {
1973 ctio->initiator_id = entry->fcp_hdr_le.d_id;
1974
1975 if (qpair->retry_term_cnt & 1)
1976 tmp |= (0x4 << 9);
1977 }
1978 ctio->u.status1.flags = cpu_to_le16(tmp);
1979 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1980
1981 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1982 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n",
1983 le16_to_cpu(ctio->u.status1.flags),
1984 le16_to_cpu(ctio->u.status1.ox_id),
1985 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0);
1986
1987 /* Memory Barrier */
1988 wmb();
1989 if (qpair->reqq_start_iocbs)
1990 qpair->reqq_start_iocbs(qpair);
1991 else
1992 qla2x00_start_iocbs(vha, qpair->req);
1993
1994 if (mcmd)
1995 qlt_build_abts_resp_iocb(mcmd);
1996 else
1997 qlt_24xx_send_abts_resp(qpair,
1998 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true);
1999
2000 }
2001
2002 /* drop cmds for the given lun
2003 * XXX only looks for cmds on the port through which lun reset was recieved
2004 * XXX does not go through the list of other port (which may have cmds
2005 * for the same lun)
2006 */
2007 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id)
2008 {
2009 struct qla_tgt_sess_op *op;
2010 struct qla_tgt_cmd *cmd;
2011 uint32_t key;
2012 unsigned long flags;
2013
2014 key = sid_to_key(s_id);
2015 spin_lock_irqsave(&vha->cmd_list_lock, flags);
2016 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
2017 uint32_t op_key;
2018 u64 op_lun;
2019
2020 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
2021 op_lun = scsilun_to_int(
2022 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
2023 if (op_key == key && op_lun == lun)
2024 op->aborted = true;
2025 }
2026
2027 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
2028 uint32_t cmd_key;
2029 u64 cmd_lun;
2030
2031 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
2032 cmd_lun = scsilun_to_int(
2033 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
2034 if (cmd_key == key && cmd_lun == lun)
2035 cmd->aborted = 1;
2036 }
2037 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
2038 }
2039
2040 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha,
2041 uint64_t unpacked_lun)
2042 {
2043 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2044 struct qla_qpair_hint *h = NULL;
2045
2046 if (vha->flags.qpairs_available) {
2047 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun);
2048 if (!h)
2049 h = &tgt->qphints[0];
2050 } else {
2051 h = &tgt->qphints[0];
2052 }
2053
2054 return h;
2055 }
2056
2057 static void qlt_do_tmr_work(struct work_struct *work)
2058 {
2059 struct qla_tgt_mgmt_cmd *mcmd =
2060 container_of(work, struct qla_tgt_mgmt_cmd, work);
2061 struct qla_hw_data *ha = mcmd->vha->hw;
2062 int rc;
2063 uint32_t tag;
2064 unsigned long flags;
2065
2066 switch (mcmd->tmr_func) {
2067 case QLA_TGT_ABTS:
2068 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort);
2069 break;
2070 default:
2071 tag = 0;
2072 break;
2073 }
2074
2075 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun,
2076 mcmd->tmr_func, tag);
2077
2078 if (rc != 0) {
2079 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags);
2080 switch (mcmd->tmr_func) {
2081 case QLA_TGT_ABTS:
2082 mcmd->fc_tm_rsp = FCP_TMF_REJECTED;
2083 qlt_build_abts_resp_iocb(mcmd);
2084 break;
2085 case QLA_TGT_LUN_RESET:
2086 case QLA_TGT_CLEAR_TS:
2087 case QLA_TGT_ABORT_TS:
2088 case QLA_TGT_CLEAR_ACA:
2089 case QLA_TGT_TARGET_RESET:
2090 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio,
2091 qla_sam_status);
2092 break;
2093
2094 case QLA_TGT_ABORT_ALL:
2095 case QLA_TGT_NEXUS_LOSS_SESS:
2096 case QLA_TGT_NEXUS_LOSS:
2097 qlt_send_notify_ack(mcmd->qpair,
2098 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2099 break;
2100 }
2101 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags);
2102
2103 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052,
2104 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2105 mcmd->vha->vp_idx, rc);
2106 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2107 }
2108 }
2109
2110 /* ha->hardware_lock supposed to be held on entry */
2111 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2112 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2113 {
2114 struct qla_hw_data *ha = vha->hw;
2115 struct qla_tgt_mgmt_cmd *mcmd;
2116 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
2117 struct qla_tgt_cmd *abort_cmd;
2118
2119 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
2120 "qla_target(%d): task abort (tag=%d)\n",
2121 vha->vp_idx, abts->exchange_addr_to_abort);
2122
2123 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2124 if (mcmd == NULL) {
2125 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
2126 "qla_target(%d): %s: Allocation of ABORT cmd failed",
2127 vha->vp_idx, __func__);
2128 return -ENOMEM;
2129 }
2130 memset(mcmd, 0, sizeof(*mcmd));
2131 mcmd->cmd_type = TYPE_TGT_TMCMD;
2132 mcmd->sess = sess;
2133 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
2134 mcmd->reset_count = ha->base_qpair->chip_reset;
2135 mcmd->tmr_func = QLA_TGT_ABTS;
2136 mcmd->qpair = h->qpair;
2137 mcmd->vha = vha;
2138
2139 /*
2140 * LUN is looked up by target-core internally based on the passed
2141 * abts->exchange_addr_to_abort tag.
2142 */
2143 mcmd->se_cmd.cpuid = h->cpuid;
2144
2145 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess,
2146 le32_to_cpu(abts->exchange_addr_to_abort));
2147 if (!abort_cmd) {
2148 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2149 return -EIO;
2150 }
2151 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun;
2152
2153 if (abort_cmd->qpair) {
2154 mcmd->qpair = abort_cmd->qpair;
2155 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid;
2156 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr;
2157 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID;
2158 }
2159
2160 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
2161 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work);
2162
2163 return 0;
2164 }
2165
2166 /*
2167 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2168 */
2169 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2170 struct abts_recv_from_24xx *abts)
2171 {
2172 struct qla_hw_data *ha = vha->hw;
2173 struct fc_port *sess;
2174 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort);
2175 be_id_t s_id;
2176 int rc;
2177 unsigned long flags;
2178
2179 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
2180 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
2181 "qla_target(%d): ABTS: Abort Sequence not "
2182 "supported\n", vha->vp_idx);
2183 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2184 false);
2185 return;
2186 }
2187
2188 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2189 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2190 "qla_target(%d): ABTS: Unknown Exchange "
2191 "Address received\n", vha->vp_idx);
2192 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2193 false);
2194 return;
2195 }
2196
2197 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2198 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2199 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain,
2200 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag,
2201 le32_to_cpu(abts->fcp_hdr_le.parameter));
2202
2203 s_id = le_id_to_be(abts->fcp_hdr_le.s_id);
2204
2205 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2206 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2207 if (!sess) {
2208 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2209 "qla_target(%d): task abort for non-existent session\n",
2210 vha->vp_idx);
2211 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2212
2213 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2214 false);
2215 return;
2216 }
2217 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2218
2219
2220 if (sess->deleted) {
2221 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2222 false);
2223 return;
2224 }
2225
2226 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2227 if (rc != 0) {
2228 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2229 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2230 vha->vp_idx, rc);
2231 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2232 false);
2233 return;
2234 }
2235 }
2236
2237 /*
2238 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2239 */
2240 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2241 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2242 {
2243 struct scsi_qla_host *ha = mcmd->vha;
2244 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2245 struct ctio7_to_24xx *ctio;
2246 uint16_t temp;
2247
2248 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2249 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2250 ha, atio, resp_code);
2251
2252
2253 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2254 if (ctio == NULL) {
2255 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2256 "qla_target(%d): %s failed: unable to allocate "
2257 "request packet\n", ha->vp_idx, __func__);
2258 return;
2259 }
2260
2261 ctio->entry_type = CTIO_TYPE7;
2262 ctio->entry_count = 1;
2263 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2264 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id);
2265 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2266 ctio->vp_index = ha->vp_idx;
2267 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2268 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2269 temp = (atio->u.isp24.attr << 9)|
2270 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2271 ctio->u.status1.flags = cpu_to_le16(temp);
2272 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2273 ctio->u.status1.ox_id = cpu_to_le16(temp);
2274 ctio->u.status1.scsi_status =
2275 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2276 ctio->u.status1.response_len = cpu_to_le16(8);
2277 ctio->u.status1.sense_data[0] = resp_code;
2278
2279 /* Memory Barrier */
2280 wmb();
2281 if (qpair->reqq_start_iocbs)
2282 qpair->reqq_start_iocbs(qpair);
2283 else
2284 qla2x00_start_iocbs(ha, qpair->req);
2285 }
2286
2287 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2288 {
2289 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2290 }
2291 EXPORT_SYMBOL(qlt_free_mcmd);
2292
2293 /*
2294 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2295 * reacquire
2296 */
2297 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
2298 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2299 {
2300 struct atio_from_isp *atio = &cmd->atio;
2301 struct ctio7_to_24xx *ctio;
2302 uint16_t temp;
2303 struct scsi_qla_host *vha = cmd->vha;
2304
2305 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2306 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2307 "sense_key=%02x, asc=%02x, ascq=%02x",
2308 vha, atio, scsi_status, sense_key, asc, ascq);
2309
2310 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2311 if (!ctio) {
2312 ql_dbg(ql_dbg_async, vha, 0x3067,
2313 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2314 vha->host_no, __func__);
2315 goto out;
2316 }
2317
2318 ctio->entry_type = CTIO_TYPE7;
2319 ctio->entry_count = 1;
2320 ctio->handle = QLA_TGT_SKIP_HANDLE;
2321 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id);
2322 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2323 ctio->vp_index = vha->vp_idx;
2324 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2325 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2326 temp = (atio->u.isp24.attr << 9) |
2327 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2328 ctio->u.status1.flags = cpu_to_le16(temp);
2329 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2330 ctio->u.status1.ox_id = cpu_to_le16(temp);
2331 ctio->u.status1.scsi_status =
2332 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2333 ctio->u.status1.response_len = cpu_to_le16(18);
2334 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2335
2336 if (ctio->u.status1.residual != 0)
2337 ctio->u.status1.scsi_status |=
2338 cpu_to_le16(SS_RESIDUAL_UNDER);
2339
2340 /* Fixed format sense data. */
2341 ctio->u.status1.sense_data[0] = 0x70;
2342 ctio->u.status1.sense_data[2] = sense_key;
2343 /* Additional sense length */
2344 ctio->u.status1.sense_data[7] = 0xa;
2345 /* ASC and ASCQ */
2346 ctio->u.status1.sense_data[12] = asc;
2347 ctio->u.status1.sense_data[13] = ascq;
2348
2349 /* Memory Barrier */
2350 wmb();
2351
2352 if (qpair->reqq_start_iocbs)
2353 qpair->reqq_start_iocbs(qpair);
2354 else
2355 qla2x00_start_iocbs(vha, qpair->req);
2356
2357 out:
2358 return;
2359 }
2360
2361 /* callback from target fabric module code */
2362 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2363 {
2364 struct scsi_qla_host *vha = mcmd->sess->vha;
2365 struct qla_hw_data *ha = vha->hw;
2366 unsigned long flags;
2367 struct qla_qpair *qpair = mcmd->qpair;
2368 bool free_mcmd = true;
2369
2370 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2371 "TM response mcmd (%p) status %#x state %#x",
2372 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2373
2374 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2375
2376 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
2377 /*
2378 * Either the port is not online or this request was from
2379 * previous life, just abort the processing.
2380 */
2381 ql_dbg(ql_dbg_async, vha, 0xe100,
2382 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2383 vha->flags.online, qla2x00_reset_active(vha),
2384 mcmd->reset_count, qpair->chip_reset);
2385 ha->tgt.tgt_ops->free_mcmd(mcmd);
2386 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2387 return;
2388 }
2389
2390 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2391 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) {
2392 case ELS_LOGO:
2393 case ELS_PRLO:
2394 case ELS_TPRLO:
2395 ql_dbg(ql_dbg_disc, vha, 0x2106,
2396 "TM response logo %8phC status %#x state %#x",
2397 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2398 mcmd->flags);
2399 qlt_schedule_sess_for_deletion(mcmd->sess);
2400 break;
2401 default:
2402 qlt_send_notify_ack(vha->hw->base_qpair,
2403 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2404 break;
2405 }
2406 } else {
2407 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) {
2408 qlt_build_abts_resp_iocb(mcmd);
2409 free_mcmd = false;
2410 } else
2411 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2412 mcmd->fc_tm_rsp);
2413 }
2414 /*
2415 * Make the callback for ->free_mcmd() to queue_work() and invoke
2416 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2417 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2418 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2419 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2420 * qlt_xmit_tm_rsp() returns here..
2421 */
2422 if (free_mcmd)
2423 ha->tgt.tgt_ops->free_mcmd(mcmd);
2424
2425 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2426 }
2427 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2428
2429 /* No locks */
2430 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2431 {
2432 struct qla_tgt_cmd *cmd = prm->cmd;
2433
2434 BUG_ON(cmd->sg_cnt == 0);
2435
2436 prm->sg = (struct scatterlist *)cmd->sg;
2437 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg,
2438 cmd->sg_cnt, cmd->dma_data_direction);
2439 if (unlikely(prm->seg_cnt == 0))
2440 goto out_err;
2441
2442 prm->cmd->sg_mapped = 1;
2443
2444 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2445 /*
2446 * If greater than four sg entries then we need to allocate
2447 * the continuation entries
2448 */
2449 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
2450 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2451 QLA_TGT_DATASEGS_PER_CMD_24XX,
2452 QLA_TGT_DATASEGS_PER_CONT_24XX);
2453 } else {
2454 /* DIF */
2455 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2456 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2457 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2458 prm->tot_dsds = prm->seg_cnt;
2459 } else
2460 prm->tot_dsds = prm->seg_cnt;
2461
2462 if (cmd->prot_sg_cnt) {
2463 prm->prot_sg = cmd->prot_sg;
2464 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev,
2465 cmd->prot_sg, cmd->prot_sg_cnt,
2466 cmd->dma_data_direction);
2467 if (unlikely(prm->prot_seg_cnt == 0))
2468 goto out_err;
2469
2470 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2471 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2472 /* Dif Bundling not support here */
2473 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2474 cmd->blk_sz);
2475 prm->tot_dsds += prm->prot_seg_cnt;
2476 } else
2477 prm->tot_dsds += prm->prot_seg_cnt;
2478 }
2479 }
2480
2481 return 0;
2482
2483 out_err:
2484 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2485 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2486 0, prm->cmd->sg_cnt);
2487 return -1;
2488 }
2489
2490 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2491 {
2492 struct qla_hw_data *ha;
2493 struct qla_qpair *qpair;
2494
2495 if (!cmd->sg_mapped)
2496 return;
2497
2498 qpair = cmd->qpair;
2499
2500 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt,
2501 cmd->dma_data_direction);
2502 cmd->sg_mapped = 0;
2503
2504 if (cmd->prot_sg_cnt)
2505 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt,
2506 cmd->dma_data_direction);
2507
2508 if (!cmd->ctx)
2509 return;
2510 ha = vha->hw;
2511 if (cmd->ctx_dsd_alloced)
2512 qla2x00_clean_dsd_pool(ha, cmd->ctx);
2513
2514 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2515 }
2516
2517 static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2518 uint32_t req_cnt)
2519 {
2520 uint32_t cnt;
2521 struct req_que *req = qpair->req;
2522
2523 if (req->cnt < (req_cnt + 2)) {
2524 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2525 rd_reg_dword_relaxed(req->req_q_out));
2526
2527 if (req->ring_index < cnt)
2528 req->cnt = cnt - req->ring_index;
2529 else
2530 req->cnt = req->length - (req->ring_index - cnt);
2531
2532 if (unlikely(req->cnt < (req_cnt + 2)))
2533 return -EAGAIN;
2534 }
2535
2536 req->cnt -= req_cnt;
2537
2538 return 0;
2539 }
2540
2541 /*
2542 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2543 */
2544 static inline void *qlt_get_req_pkt(struct req_que *req)
2545 {
2546 /* Adjust ring index. */
2547 req->ring_index++;
2548 if (req->ring_index == req->length) {
2549 req->ring_index = 0;
2550 req->ring_ptr = req->ring;
2551 } else {
2552 req->ring_ptr++;
2553 }
2554 return (cont_entry_t *)req->ring_ptr;
2555 }
2556
2557 /* ha->hardware_lock supposed to be held on entry */
2558 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2559 {
2560 uint32_t h;
2561 int index;
2562 uint8_t found = 0;
2563 struct req_que *req = qpair->req;
2564
2565 h = req->current_outstanding_cmd;
2566
2567 for (index = 1; index < req->num_outstanding_cmds; index++) {
2568 h++;
2569 if (h == req->num_outstanding_cmds)
2570 h = 1;
2571
2572 if (h == QLA_TGT_SKIP_HANDLE)
2573 continue;
2574
2575 if (!req->outstanding_cmds[h]) {
2576 found = 1;
2577 break;
2578 }
2579 }
2580
2581 if (found) {
2582 req->current_outstanding_cmd = h;
2583 } else {
2584 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2585 "qla_target(%d): Ran out of empty cmd slots\n",
2586 qpair->vha->vp_idx);
2587 h = QLA_TGT_NULL_HANDLE;
2588 }
2589
2590 return h;
2591 }
2592
2593 /* ha->hardware_lock supposed to be held on entry */
2594 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2595 struct qla_tgt_prm *prm)
2596 {
2597 uint32_t h;
2598 struct ctio7_to_24xx *pkt;
2599 struct atio_from_isp *atio = &prm->cmd->atio;
2600 uint16_t temp;
2601 struct qla_tgt_cmd *cmd = prm->cmd;
2602
2603 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2604 prm->pkt = pkt;
2605 memset(pkt, 0, sizeof(*pkt));
2606
2607 pkt->entry_type = CTIO_TYPE7;
2608 pkt->entry_count = (uint8_t)prm->req_cnt;
2609 pkt->vp_index = prm->cmd->vp_idx;
2610
2611 h = qlt_make_handle(qpair);
2612 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2613 /*
2614 * CTIO type 7 from the firmware doesn't provide a way to
2615 * know the initiator's LOOP ID, hence we can't find
2616 * the session and, so, the command.
2617 */
2618 return -EAGAIN;
2619 } else
2620 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2621
2622 pkt->handle = make_handle(qpair->req->id, h);
2623 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2624 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2625 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2626 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2627 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2628 temp = atio->u.isp24.attr << 9;
2629 pkt->u.status0.flags |= cpu_to_le16(temp);
2630 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2631 pkt->u.status0.ox_id = cpu_to_le16(temp);
2632 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2633
2634 if (cmd->edif) {
2635 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2636 prm->cmd->sess->edif.rx_bytes += cmd->bufflen;
2637 if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2638 prm->cmd->sess->edif.tx_bytes += cmd->bufflen;
2639
2640 pkt->u.status0.edif_flags |= EF_EN_EDIF;
2641 }
2642
2643 return 0;
2644 }
2645
2646 /*
2647 * ha->hardware_lock supposed to be held on entry. We have already made sure
2648 * that there is sufficient amount of request entries to not drop it.
2649 */
2650 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2651 {
2652 int cnt;
2653 struct dsd64 *cur_dsd;
2654
2655 /* Build continuation packets */
2656 while (prm->seg_cnt > 0) {
2657 cont_a64_entry_t *cont_pkt64 =
2658 (cont_a64_entry_t *)qlt_get_req_pkt(
2659 prm->cmd->qpair->req);
2660
2661 /*
2662 * Make sure that from cont_pkt64 none of
2663 * 64-bit specific fields used for 32-bit
2664 * addressing. Cast to (cont_entry_t *) for
2665 * that.
2666 */
2667
2668 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2669
2670 cont_pkt64->entry_count = 1;
2671 cont_pkt64->sys_define = 0;
2672
2673 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2674 cur_dsd = cont_pkt64->dsd;
2675
2676 /* Load continuation entry data segments */
2677 for (cnt = 0;
2678 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2679 cnt++, prm->seg_cnt--) {
2680 append_dsd64(&cur_dsd, prm->sg);
2681 prm->sg = sg_next(prm->sg);
2682 }
2683 }
2684 }
2685
2686 /*
2687 * ha->hardware_lock supposed to be held on entry. We have already made sure
2688 * that there is sufficient amount of request entries to not drop it.
2689 */
2690 static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2691 {
2692 int cnt;
2693 struct dsd64 *cur_dsd;
2694 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2695
2696 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2697
2698 /* Setup packet address segment pointer */
2699 cur_dsd = &pkt24->u.status0.dsd;
2700
2701 /* Set total data segment count */
2702 if (prm->seg_cnt)
2703 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2704
2705 if (prm->seg_cnt == 0) {
2706 /* No data transfer */
2707 cur_dsd->address = 0;
2708 cur_dsd->length = 0;
2709 return;
2710 }
2711
2712 /* If scatter gather */
2713
2714 /* Load command entry data segments */
2715 for (cnt = 0;
2716 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2717 cnt++, prm->seg_cnt--) {
2718 append_dsd64(&cur_dsd, prm->sg);
2719 prm->sg = sg_next(prm->sg);
2720 }
2721
2722 qlt_load_cont_data_segments(prm);
2723 }
2724
2725 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2726 {
2727 return cmd->bufflen > 0;
2728 }
2729
2730 static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2731 {
2732 struct qla_tgt_cmd *cmd;
2733 struct scsi_qla_host *vha;
2734
2735 /* asc 0x10=dif error */
2736 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2737 cmd = prm->cmd;
2738 vha = cmd->vha;
2739 /* ASCQ */
2740 switch (prm->sense_buffer[13]) {
2741 case 1:
2742 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
2743 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2744 "se_cmd=%p tag[%x]",
2745 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2746 cmd->atio.u.isp24.exchange_addr);
2747 break;
2748 case 2:
2749 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
2750 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2751 "se_cmd=%p tag[%x]",
2752 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2753 cmd->atio.u.isp24.exchange_addr);
2754 break;
2755 case 3:
2756 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
2757 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2758 "se_cmd=%p tag[%x]",
2759 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2760 cmd->atio.u.isp24.exchange_addr);
2761 break;
2762 default:
2763 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
2764 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2765 "se_cmd=%p tag[%x]",
2766 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2767 cmd->atio.u.isp24.exchange_addr);
2768 break;
2769 }
2770 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
2771 }
2772 }
2773
2774 /*
2775 * Called without ha->hardware_lock held
2776 */
2777 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2778 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2779 uint32_t *full_req_cnt)
2780 {
2781 struct se_cmd *se_cmd = &cmd->se_cmd;
2782 struct qla_qpair *qpair = cmd->qpair;
2783
2784 prm->cmd = cmd;
2785 prm->tgt = cmd->tgt;
2786 prm->pkt = NULL;
2787 prm->rq_result = scsi_status;
2788 prm->sense_buffer = &cmd->sense_buffer[0];
2789 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2790 prm->sg = NULL;
2791 prm->seg_cnt = -1;
2792 prm->req_cnt = 1;
2793 prm->residual = 0;
2794 prm->add_status_pkt = 0;
2795 prm->prot_sg = NULL;
2796 prm->prot_seg_cnt = 0;
2797 prm->tot_dsds = 0;
2798
2799 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2800 if (qlt_pci_map_calc_cnt(prm) != 0)
2801 return -EAGAIN;
2802 }
2803
2804 *full_req_cnt = prm->req_cnt;
2805
2806 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2807 prm->residual = se_cmd->residual_count;
2808 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
2809 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2810 prm->residual, se_cmd->tag,
2811 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2812 cmd->bufflen, prm->rq_result);
2813 prm->rq_result |= SS_RESIDUAL_UNDER;
2814 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2815 prm->residual = se_cmd->residual_count;
2816 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
2817 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2818 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2819 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2820 prm->rq_result |= SS_RESIDUAL_OVER;
2821 }
2822
2823 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2824 /*
2825 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2826 * ignored in *xmit_response() below
2827 */
2828 if (qlt_has_data(cmd)) {
2829 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2830 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2831 (prm->rq_result != 0))) {
2832 prm->add_status_pkt = 1;
2833 (*full_req_cnt)++;
2834 }
2835 }
2836 }
2837
2838 return 0;
2839 }
2840
2841 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2842 int sending_sense)
2843 {
2844 if (cmd->qpair->enable_class_2)
2845 return 0;
2846
2847 if (sending_sense)
2848 return cmd->conf_compl_supported;
2849 else
2850 return cmd->qpair->enable_explicit_conf &&
2851 cmd->conf_compl_supported;
2852 }
2853
2854 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2855 struct qla_tgt_prm *prm)
2856 {
2857 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2858 (uint32_t)sizeof(ctio->u.status1.sense_data));
2859 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2860 if (qlt_need_explicit_conf(prm->cmd, 0)) {
2861 ctio->u.status0.flags |= cpu_to_le16(
2862 CTIO7_FLAGS_EXPLICIT_CONFORM |
2863 CTIO7_FLAGS_CONFORM_REQ);
2864 }
2865 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2866 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2867 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2868 int i;
2869
2870 if (qlt_need_explicit_conf(prm->cmd, 1)) {
2871 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2872 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2873 "Skipping EXPLICIT_CONFORM and "
2874 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2875 "non GOOD status\n");
2876 goto skip_explict_conf;
2877 }
2878 ctio->u.status1.flags |= cpu_to_le16(
2879 CTIO7_FLAGS_EXPLICIT_CONFORM |
2880 CTIO7_FLAGS_CONFORM_REQ);
2881 }
2882 skip_explict_conf:
2883 ctio->u.status1.flags &=
2884 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2885 ctio->u.status1.flags |=
2886 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2887 ctio->u.status1.scsi_status |=
2888 cpu_to_le16(SS_SENSE_LEN_VALID);
2889 ctio->u.status1.sense_length =
2890 cpu_to_le16(prm->sense_buffer_len);
2891 for (i = 0; i < prm->sense_buffer_len/4; i++) {
2892 uint32_t v;
2893
2894 v = get_unaligned_be32(
2895 &((uint32_t *)prm->sense_buffer)[i]);
2896 put_unaligned_le32(v,
2897 &((uint32_t *)ctio->u.status1.sense_data)[i]);
2898 }
2899 qlt_print_dif_err(prm);
2900
2901 } else {
2902 ctio->u.status1.flags &=
2903 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2904 ctio->u.status1.flags |=
2905 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2906 ctio->u.status1.sense_length = 0;
2907 memset(ctio->u.status1.sense_data, 0,
2908 sizeof(ctio->u.status1.sense_data));
2909 }
2910
2911 /* Sense with len > 24, is it possible ??? */
2912 }
2913
2914 static inline int
2915 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2916 {
2917 switch (se_cmd->prot_op) {
2918 case TARGET_PROT_DOUT_INSERT:
2919 case TARGET_PROT_DIN_STRIP:
2920 if (ql2xenablehba_err_chk >= 1)
2921 return 1;
2922 break;
2923 case TARGET_PROT_DOUT_PASS:
2924 case TARGET_PROT_DIN_PASS:
2925 if (ql2xenablehba_err_chk >= 2)
2926 return 1;
2927 break;
2928 case TARGET_PROT_DIN_INSERT:
2929 case TARGET_PROT_DOUT_STRIP:
2930 return 1;
2931 default:
2932 break;
2933 }
2934 return 0;
2935 }
2936
2937 static inline int
2938 qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2939 {
2940 switch (se_cmd->prot_op) {
2941 case TARGET_PROT_DIN_INSERT:
2942 case TARGET_PROT_DOUT_INSERT:
2943 case TARGET_PROT_DIN_STRIP:
2944 case TARGET_PROT_DOUT_STRIP:
2945 case TARGET_PROT_DIN_PASS:
2946 case TARGET_PROT_DOUT_PASS:
2947 return 1;
2948 default:
2949 return 0;
2950 }
2951 return 0;
2952 }
2953
2954 /*
2955 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
2956 */
2957 static void
2958 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2959 uint16_t *pfw_prot_opts)
2960 {
2961 struct se_cmd *se_cmd = &cmd->se_cmd;
2962 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2963 scsi_qla_host_t *vha = cmd->tgt->vha;
2964 struct qla_hw_data *ha = vha->hw;
2965 uint32_t t32 = 0;
2966
2967 /*
2968 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
2969 * have been immplemented by TCM, before AppTag is avail.
2970 * Look for modesense_handlers[]
2971 */
2972 ctx->app_tag = 0;
2973 ctx->app_tag_mask[0] = 0x0;
2974 ctx->app_tag_mask[1] = 0x0;
2975
2976 if (IS_PI_UNINIT_CAPABLE(ha)) {
2977 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2978 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2979 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2980 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2981 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2982 }
2983
2984 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2985
2986 switch (se_cmd->prot_type) {
2987 case TARGET_DIF_TYPE0_PROT:
2988 /*
2989 * No check for ql2xenablehba_err_chk, as it
2990 * would be an I/O error if hba tag generation
2991 * is not done.
2992 */
2993 ctx->ref_tag = cpu_to_le32(lba);
2994 /* enable ALL bytes of the ref tag */
2995 ctx->ref_tag_mask[0] = 0xff;
2996 ctx->ref_tag_mask[1] = 0xff;
2997 ctx->ref_tag_mask[2] = 0xff;
2998 ctx->ref_tag_mask[3] = 0xff;
2999 break;
3000 case TARGET_DIF_TYPE1_PROT:
3001 /*
3002 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
3003 * REF tag, and 16 bit app tag.
3004 */
3005 ctx->ref_tag = cpu_to_le32(lba);
3006 if (!qla_tgt_ref_mask_check(se_cmd) ||
3007 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
3008 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
3009 break;
3010 }
3011 /* enable ALL bytes of the ref tag */
3012 ctx->ref_tag_mask[0] = 0xff;
3013 ctx->ref_tag_mask[1] = 0xff;
3014 ctx->ref_tag_mask[2] = 0xff;
3015 ctx->ref_tag_mask[3] = 0xff;
3016 break;
3017 case TARGET_DIF_TYPE2_PROT:
3018 /*
3019 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
3020 * tag has to match LBA in CDB + N
3021 */
3022 ctx->ref_tag = cpu_to_le32(lba);
3023 if (!qla_tgt_ref_mask_check(se_cmd) ||
3024 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
3025 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
3026 break;
3027 }
3028 /* enable ALL bytes of the ref tag */
3029 ctx->ref_tag_mask[0] = 0xff;
3030 ctx->ref_tag_mask[1] = 0xff;
3031 ctx->ref_tag_mask[2] = 0xff;
3032 ctx->ref_tag_mask[3] = 0xff;
3033 break;
3034 case TARGET_DIF_TYPE3_PROT:
3035 /* For TYPE 3 protection: 16 bit GUARD only */
3036 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
3037 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
3038 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
3039 break;
3040 }
3041 }
3042
3043 static inline int
3044 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
3045 {
3046 struct dsd64 *cur_dsd;
3047 uint32_t transfer_length = 0;
3048 uint32_t data_bytes;
3049 uint32_t dif_bytes;
3050 uint8_t bundling = 1;
3051 struct crc_context *crc_ctx_pkt = NULL;
3052 struct qla_hw_data *ha;
3053 struct ctio_crc2_to_fw *pkt;
3054 dma_addr_t crc_ctx_dma;
3055 uint16_t fw_prot_opts = 0;
3056 struct qla_tgt_cmd *cmd = prm->cmd;
3057 struct se_cmd *se_cmd = &cmd->se_cmd;
3058 uint32_t h;
3059 struct atio_from_isp *atio = &prm->cmd->atio;
3060 struct qla_tc_param tc;
3061 uint16_t t16;
3062 scsi_qla_host_t *vha = cmd->vha;
3063
3064 ha = vha->hw;
3065
3066 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
3067 prm->pkt = pkt;
3068 memset(pkt, 0, sizeof(*pkt));
3069
3070 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
3071 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
3072 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
3073 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
3074
3075 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
3076 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
3077 bundling = 0;
3078
3079 /* Compute dif len and adjust data len to incude protection */
3080 data_bytes = cmd->bufflen;
3081 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
3082
3083 switch (se_cmd->prot_op) {
3084 case TARGET_PROT_DIN_INSERT:
3085 case TARGET_PROT_DOUT_STRIP:
3086 transfer_length = data_bytes;
3087 if (cmd->prot_sg_cnt)
3088 data_bytes += dif_bytes;
3089 break;
3090 case TARGET_PROT_DIN_STRIP:
3091 case TARGET_PROT_DOUT_INSERT:
3092 case TARGET_PROT_DIN_PASS:
3093 case TARGET_PROT_DOUT_PASS:
3094 transfer_length = data_bytes + dif_bytes;
3095 break;
3096 default:
3097 BUG();
3098 break;
3099 }
3100
3101 if (!qlt_hba_err_chk_enabled(se_cmd))
3102 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
3103 /* HBA error checking enabled */
3104 else if (IS_PI_UNINIT_CAPABLE(ha)) {
3105 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
3106 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
3107 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
3108 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
3109 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
3110 }
3111
3112 switch (se_cmd->prot_op) {
3113 case TARGET_PROT_DIN_INSERT:
3114 case TARGET_PROT_DOUT_INSERT:
3115 fw_prot_opts |= PO_MODE_DIF_INSERT;
3116 break;
3117 case TARGET_PROT_DIN_STRIP:
3118 case TARGET_PROT_DOUT_STRIP:
3119 fw_prot_opts |= PO_MODE_DIF_REMOVE;
3120 break;
3121 case TARGET_PROT_DIN_PASS:
3122 case TARGET_PROT_DOUT_PASS:
3123 fw_prot_opts |= PO_MODE_DIF_PASS;
3124 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
3125 break;
3126 default:/* Normal Request */
3127 fw_prot_opts |= PO_MODE_DIF_PASS;
3128 break;
3129 }
3130
3131 /* ---- PKT ---- */
3132 /* Update entry type to indicate Command Type CRC_2 IOCB */
3133 pkt->entry_type = CTIO_CRC2;
3134 pkt->entry_count = 1;
3135 pkt->vp_index = cmd->vp_idx;
3136
3137 h = qlt_make_handle(qpair);
3138 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
3139 /*
3140 * CTIO type 7 from the firmware doesn't provide a way to
3141 * know the initiator's LOOP ID, hence we can't find
3142 * the session and, so, the command.
3143 */
3144 return -EAGAIN;
3145 } else
3146 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
3147
3148 pkt->handle = make_handle(qpair->req->id, h);
3149 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
3150 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
3151 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3152 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
3153 pkt->exchange_addr = atio->u.isp24.exchange_addr;
3154
3155 /* silence compile warning */
3156 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3157 pkt->ox_id = cpu_to_le16(t16);
3158
3159 t16 = (atio->u.isp24.attr << 9);
3160 pkt->flags |= cpu_to_le16(t16);
3161 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
3162
3163 /* Set transfer direction */
3164 if (cmd->dma_data_direction == DMA_TO_DEVICE)
3165 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
3166 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
3167 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
3168
3169 pkt->dseg_count = cpu_to_le16(prm->tot_dsds);
3170 /* Fibre channel byte count */
3171 pkt->transfer_length = cpu_to_le32(transfer_length);
3172
3173 /* ----- CRC context -------- */
3174
3175 /* Allocate CRC context from global pool */
3176 crc_ctx_pkt = cmd->ctx =
3177 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
3178
3179 if (!crc_ctx_pkt)
3180 goto crc_queuing_error;
3181
3182 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3183 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3184
3185 /* Set handle */
3186 crc_ctx_pkt->handle = pkt->handle;
3187
3188 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
3189
3190 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address);
3191 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW);
3192
3193 if (!bundling) {
3194 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0];
3195 } else {
3196 /*
3197 * Configure Bundling if we need to fetch interlaving
3198 * protection PCI accesses
3199 */
3200 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3201 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3202 crc_ctx_pkt->u.bundling.dseg_count =
3203 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3204 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0];
3205 }
3206
3207 /* Finish the common fields of CRC pkt */
3208 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3209 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3210 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
3211 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
3212
3213 memset((uint8_t *)&tc, 0 , sizeof(tc));
3214 tc.vha = vha;
3215 tc.blk_sz = cmd->blk_sz;
3216 tc.bufflen = cmd->bufflen;
3217 tc.sg = cmd->sg;
3218 tc.prot_sg = cmd->prot_sg;
3219 tc.ctx = crc_ctx_pkt;
3220 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
3221
3222 /* Walks data segments */
3223 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
3224
3225 if (!bundling && prm->prot_seg_cnt) {
3226 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
3227 prm->tot_dsds, &tc))
3228 goto crc_queuing_error;
3229 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
3230 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
3231 goto crc_queuing_error;
3232
3233 if (bundling && prm->prot_seg_cnt) {
3234 /* Walks dif segments */
3235 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
3236
3237 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd;
3238 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
3239 prm->prot_seg_cnt, cmd))
3240 goto crc_queuing_error;
3241 }
3242 return QLA_SUCCESS;
3243
3244 crc_queuing_error:
3245 /* Cleanup will be performed by the caller */
3246 qpair->req->outstanding_cmds[h] = NULL;
3247
3248 return QLA_FUNCTION_FAILED;
3249 }
3250
3251 /*
3252 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3253 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3254 */
3255 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3256 uint8_t scsi_status)
3257 {
3258 struct scsi_qla_host *vha = cmd->vha;
3259 struct qla_qpair *qpair = cmd->qpair;
3260 struct ctio7_to_24xx *pkt;
3261 struct qla_tgt_prm prm;
3262 uint32_t full_req_cnt = 0;
3263 unsigned long flags = 0;
3264 int res;
3265
3266 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3267 (cmd->sess && cmd->sess->deleted)) {
3268 cmd->state = QLA_TGT_STATE_PROCESSED;
3269 return 0;
3270 }
3271
3272 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
3273 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
3274 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3275 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3276 &cmd->se_cmd, qpair->id);
3277
3278 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3279 &full_req_cnt);
3280 if (unlikely(res != 0)) {
3281 return res;
3282 }
3283
3284 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3285
3286 if (xmit_type == QLA_TGT_XMIT_STATUS)
3287 qpair->tgt_counters.core_qla_snd_status++;
3288 else
3289 qpair->tgt_counters.core_qla_que_buf++;
3290
3291 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
3292 /*
3293 * Either the port is not online or this request was from
3294 * previous life, just abort the processing.
3295 */
3296 cmd->state = QLA_TGT_STATE_PROCESSED;
3297 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3298 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3299 vha->flags.online, qla2x00_reset_active(vha),
3300 cmd->reset_count, qpair->chip_reset);
3301 res = 0;
3302 goto out_unmap_unlock;
3303 }
3304
3305 /* Does F/W have an IOCBs for this request */
3306 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
3307 if (unlikely(res))
3308 goto out_unmap_unlock;
3309
3310 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3311 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3312 else
3313 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3314 if (unlikely(res != 0)) {
3315 qpair->req->cnt += full_req_cnt;
3316 goto out_unmap_unlock;
3317 }
3318
3319 pkt = (struct ctio7_to_24xx *)prm.pkt;
3320
3321 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3322 pkt->u.status0.flags |=
3323 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
3324 CTIO7_FLAGS_STATUS_MODE_0);
3325
3326 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3327 qlt_load_data_segments(&prm);
3328
3329 if (prm.add_status_pkt == 0) {
3330 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3331 pkt->u.status0.scsi_status =
3332 cpu_to_le16(prm.rq_result);
3333 if (!cmd->edif)
3334 pkt->u.status0.residual =
3335 cpu_to_le32(prm.residual);
3336
3337 pkt->u.status0.flags |= cpu_to_le16(
3338 CTIO7_FLAGS_SEND_STATUS);
3339 if (qlt_need_explicit_conf(cmd, 0)) {
3340 pkt->u.status0.flags |=
3341 cpu_to_le16(
3342 CTIO7_FLAGS_EXPLICIT_CONFORM |
3343 CTIO7_FLAGS_CONFORM_REQ);
3344 }
3345 }
3346
3347 } else {
3348 /*
3349 * We have already made sure that there is sufficient
3350 * amount of request entries to not drop HW lock in
3351 * req_pkt().
3352 */
3353 struct ctio7_to_24xx *ctio =
3354 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3355 qpair->req);
3356
3357 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
3358 "Building additional status packet 0x%p.\n",
3359 ctio);
3360
3361 /*
3362 * T10Dif: ctio_crc2_to_fw overlay ontop of
3363 * ctio7_to_24xx
3364 */
3365 memcpy(ctio, pkt, sizeof(*ctio));
3366 /* reset back to CTIO7 */
3367 ctio->entry_count = 1;
3368 ctio->entry_type = CTIO_TYPE7;
3369 ctio->dseg_count = 0;
3370 ctio->u.status1.flags &= ~cpu_to_le16(
3371 CTIO7_FLAGS_DATA_IN);
3372
3373 /* Real finish is ctio_m1's finish */
3374 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
3375 pkt->u.status0.flags |= cpu_to_le16(
3376 CTIO7_FLAGS_DONT_RET_CTIO);
3377
3378 /* qlt_24xx_init_ctio_to_isp will correct
3379 * all neccessary fields that's part of CTIO7.
3380 * There should be no residual of CTIO-CRC2 data.
3381 */
3382 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3383 &prm);
3384 }
3385 } else
3386 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3387
3388
3389 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
3390 cmd->cmd_sent_to_fw = 1;
3391 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3392
3393 /* Memory Barrier */
3394 wmb();
3395 if (qpair->reqq_start_iocbs)
3396 qpair->reqq_start_iocbs(qpair);
3397 else
3398 qla2x00_start_iocbs(vha, qpair->req);
3399 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3400
3401 return 0;
3402
3403 out_unmap_unlock:
3404 qlt_unmap_sg(vha, cmd);
3405 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3406
3407 return res;
3408 }
3409 EXPORT_SYMBOL(qlt_xmit_response);
3410
3411 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3412 {
3413 struct ctio7_to_24xx *pkt;
3414 struct scsi_qla_host *vha = cmd->vha;
3415 struct qla_tgt *tgt = cmd->tgt;
3416 struct qla_tgt_prm prm;
3417 unsigned long flags = 0;
3418 int res = 0;
3419 struct qla_qpair *qpair = cmd->qpair;
3420
3421 memset(&prm, 0, sizeof(prm));
3422 prm.cmd = cmd;
3423 prm.tgt = tgt;
3424 prm.sg = NULL;
3425 prm.req_cnt = 1;
3426
3427 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3428 (cmd->sess && cmd->sess->deleted)) {
3429 /*
3430 * Either the port is not online or this request was from
3431 * previous life, just abort the processing.
3432 */
3433 cmd->aborted = 1;
3434 cmd->write_data_transferred = 0;
3435 cmd->state = QLA_TGT_STATE_DATA_IN;
3436 vha->hw->tgt.tgt_ops->handle_data(cmd);
3437 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3438 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3439 vha->flags.online, qla2x00_reset_active(vha),
3440 cmd->reset_count, qpair->chip_reset);
3441 return 0;
3442 }
3443
3444 /* Calculate number of entries and segments required */
3445 if (qlt_pci_map_calc_cnt(&prm) != 0)
3446 return -EAGAIN;
3447
3448 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3449 /* Does F/W have an IOCBs for this request */
3450 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
3451 if (res != 0)
3452 goto out_unlock_free_unmap;
3453 if (cmd->se_cmd.prot_op)
3454 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3455 else
3456 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3457
3458 if (unlikely(res != 0)) {
3459 qpair->req->cnt += prm.req_cnt;
3460 goto out_unlock_free_unmap;
3461 }
3462
3463 pkt = (struct ctio7_to_24xx *)prm.pkt;
3464 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
3465 CTIO7_FLAGS_STATUS_MODE_0);
3466
3467 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3468 qlt_load_data_segments(&prm);
3469
3470 cmd->state = QLA_TGT_STATE_NEED_DATA;
3471 cmd->cmd_sent_to_fw = 1;
3472 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3473
3474 /* Memory Barrier */
3475 wmb();
3476 if (qpair->reqq_start_iocbs)
3477 qpair->reqq_start_iocbs(qpair);
3478 else
3479 qla2x00_start_iocbs(vha, qpair->req);
3480 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3481
3482 return res;
3483
3484 out_unlock_free_unmap:
3485 qlt_unmap_sg(vha, cmd);
3486 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3487
3488 return res;
3489 }
3490 EXPORT_SYMBOL(qlt_rdy_to_xfer);
3491
3492
3493 /*
3494 * it is assumed either hardware_lock or qpair lock is held.
3495 */
3496 static void
3497 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
3498 struct ctio_crc_from_fw *sts)
3499 {
3500 uint8_t *ap = &sts->actual_dif[0];
3501 uint8_t *ep = &sts->expected_dif[0];
3502 uint64_t lba = cmd->se_cmd.t_task_lba;
3503 uint8_t scsi_status, sense_key, asc, ascq;
3504 unsigned long flags;
3505 struct scsi_qla_host *vha = cmd->vha;
3506
3507 cmd->trc_flags |= TRC_DIF_ERR;
3508
3509 cmd->a_guard = get_unaligned_be16(ap + 0);
3510 cmd->a_app_tag = get_unaligned_be16(ap + 2);
3511 cmd->a_ref_tag = get_unaligned_be32(ap + 4);
3512
3513 cmd->e_guard = get_unaligned_be16(ep + 0);
3514 cmd->e_app_tag = get_unaligned_be16(ep + 2);
3515 cmd->e_ref_tag = get_unaligned_be32(ep + 4);
3516
3517 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3518 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
3519
3520 scsi_status = sense_key = asc = ascq = 0;
3521
3522 /* check appl tag */
3523 if (cmd->e_app_tag != cmd->a_app_tag) {
3524 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3525 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]",
3526 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3527 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3528 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3529 cmd->atio.u.isp24.fcp_hdr.ox_id);
3530
3531 cmd->dif_err_code = DIF_ERR_APP;
3532 scsi_status = SAM_STAT_CHECK_CONDITION;
3533 sense_key = ABORTED_COMMAND;
3534 asc = 0x10;
3535 ascq = 0x2;
3536 }
3537
3538 /* check ref tag */
3539 if (cmd->e_ref_tag != cmd->a_ref_tag) {
3540 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3541 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ",
3542 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3543 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3544 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3545 cmd->atio.u.isp24.fcp_hdr.ox_id);
3546
3547 cmd->dif_err_code = DIF_ERR_REF;
3548 scsi_status = SAM_STAT_CHECK_CONDITION;
3549 sense_key = ABORTED_COMMAND;
3550 asc = 0x10;
3551 ascq = 0x3;
3552 goto out;
3553 }
3554
3555 /* check guard */
3556 if (cmd->e_guard != cmd->a_guard) {
3557 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3558 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]",
3559 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3560 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3561 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3562 cmd->atio.u.isp24.fcp_hdr.ox_id);
3563
3564 cmd->dif_err_code = DIF_ERR_GRD;
3565 scsi_status = SAM_STAT_CHECK_CONDITION;
3566 sense_key = ABORTED_COMMAND;
3567 asc = 0x10;
3568 ascq = 0x1;
3569 }
3570 out:
3571 switch (cmd->state) {
3572 case QLA_TGT_STATE_NEED_DATA:
3573 /* handle_data will load DIF error code */
3574 cmd->state = QLA_TGT_STATE_DATA_IN;
3575 vha->hw->tgt.tgt_ops->handle_data(cmd);
3576 break;
3577 default:
3578 spin_lock_irqsave(&cmd->cmd_lock, flags);
3579 if (cmd->aborted) {
3580 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3581 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3582 break;
3583 }
3584 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3585
3586 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3587 ascq);
3588 /* assume scsi status gets out on the wire.
3589 * Will not wait for completion.
3590 */
3591 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3592 break;
3593 }
3594 }
3595
3596 /* If hardware_lock held on entry, might drop it, then reaquire */
3597 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3598 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3599 struct imm_ntfy_from_isp *ntfy)
3600 {
3601 struct nack_to_isp *nack;
3602 struct qla_hw_data *ha = vha->hw;
3603 request_t *pkt;
3604 int ret = 0;
3605
3606 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3607 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3608
3609 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3610 if (pkt == NULL) {
3611 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3612 "qla_target(%d): %s failed: unable to allocate "
3613 "request packet\n", vha->vp_idx, __func__);
3614 return -ENOMEM;
3615 }
3616
3617 pkt->entry_type = NOTIFY_ACK_TYPE;
3618 pkt->entry_count = 1;
3619 pkt->handle = QLA_TGT_SKIP_HANDLE;
3620
3621 nack = (struct nack_to_isp *)pkt;
3622 nack->ox_id = ntfy->ox_id;
3623
3624 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3625 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3626 nack->u.isp24.flags = ntfy->u.isp24.flags &
3627 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
3628 }
3629
3630 /* terminate */
3631 nack->u.isp24.flags |=
3632 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3633
3634 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3635 nack->u.isp24.status = ntfy->u.isp24.status;
3636 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3637 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3638 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3639 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3640 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3641 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3642
3643 qla2x00_start_iocbs(vha, vha->req);
3644 return ret;
3645 }
3646
3647 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3648 struct imm_ntfy_from_isp *imm, int ha_locked)
3649 {
3650 int rc;
3651
3652 WARN_ON_ONCE(!ha_locked);
3653 rc = __qlt_send_term_imm_notif(vha, imm);
3654 pr_debug("rc = %d\n", rc);
3655 }
3656
3657 /*
3658 * If hardware_lock held on entry, might drop it, then reaquire
3659 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3660 */
3661 static int __qlt_send_term_exchange(struct qla_qpair *qpair,
3662 struct qla_tgt_cmd *cmd,
3663 struct atio_from_isp *atio)
3664 {
3665 struct scsi_qla_host *vha = qpair->vha;
3666 struct ctio7_to_24xx *ctio24;
3667 struct qla_hw_data *ha = vha->hw;
3668 request_t *pkt;
3669 int ret = 0;
3670 uint16_t temp;
3671
3672 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3673
3674 if (cmd)
3675 vha = cmd->vha;
3676
3677 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
3678 if (pkt == NULL) {
3679 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3680 "qla_target(%d): %s failed: unable to allocate "
3681 "request packet\n", vha->vp_idx, __func__);
3682 return -ENOMEM;
3683 }
3684
3685 if (cmd != NULL) {
3686 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3687 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3688 "qla_target(%d): Terminating cmd %p with "
3689 "incorrect state %d\n", vha->vp_idx, cmd,
3690 cmd->state);
3691 } else
3692 ret = 1;
3693 }
3694
3695 qpair->tgt_counters.num_term_xchg_sent++;
3696 pkt->entry_count = 1;
3697 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3698
3699 ctio24 = (struct ctio7_to_24xx *)pkt;
3700 ctio24->entry_type = CTIO_TYPE7;
3701 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED);
3702 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3703 ctio24->vp_index = vha->vp_idx;
3704 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
3705 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3706 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3707 CTIO7_FLAGS_TERMINATE;
3708 ctio24->u.status1.flags = cpu_to_le16(temp);
3709 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3710 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3711
3712 /* Memory Barrier */
3713 wmb();
3714 if (qpair->reqq_start_iocbs)
3715 qpair->reqq_start_iocbs(qpair);
3716 else
3717 qla2x00_start_iocbs(vha, qpair->req);
3718 return ret;
3719 }
3720
3721 static void qlt_send_term_exchange(struct qla_qpair *qpair,
3722 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3723 int ul_abort)
3724 {
3725 struct scsi_qla_host *vha;
3726 unsigned long flags = 0;
3727 int rc;
3728
3729 /* why use different vha? NPIV */
3730 if (cmd)
3731 vha = cmd->vha;
3732 else
3733 vha = qpair->vha;
3734
3735 if (ha_locked) {
3736 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3737 if (rc == -ENOMEM)
3738 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3739 goto done;
3740 }
3741 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3742 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3743 if (rc == -ENOMEM)
3744 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3745
3746 done:
3747 if (cmd && !ul_abort && !cmd->aborted) {
3748 if (cmd->sg_mapped)
3749 qlt_unmap_sg(vha, cmd);
3750 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3751 }
3752
3753 if (!ha_locked)
3754 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3755
3756 return;
3757 }
3758
3759 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3760 {
3761 struct list_head free_list;
3762 struct qla_tgt_cmd *cmd, *tcmd;
3763
3764 vha->hw->tgt.leak_exchg_thresh_hold =
3765 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3766
3767 cmd = tcmd = NULL;
3768 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3769 INIT_LIST_HEAD(&free_list);
3770 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3771
3772 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3773 list_del(&cmd->cmd_list);
3774 /* This cmd was never sent to TCM. There is no need
3775 * to schedule free or call free_cmd
3776 */
3777 qlt_free_cmd(cmd);
3778 vha->hw->tgt.num_qfull_cmds_alloc--;
3779 }
3780 }
3781 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3782 }
3783
3784 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3785 {
3786 uint32_t total_leaked;
3787
3788 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3789
3790 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3791 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3792
3793 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3794 "Chip reset due to exchange starvation: %d/%d.\n",
3795 total_leaked, vha->hw->cur_fw_xcb_count);
3796
3797 if (IS_P3P_TYPE(vha->hw))
3798 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3799 else
3800 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3801 qla2xxx_wake_dpc(vha);
3802 }
3803
3804 }
3805
3806 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3807 {
3808 struct qla_tgt *tgt = cmd->tgt;
3809 struct scsi_qla_host *vha = tgt->vha;
3810 struct se_cmd *se_cmd = &cmd->se_cmd;
3811 unsigned long flags;
3812
3813 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3814 "qla_target(%d): terminating exchange for aborted cmd=%p "
3815 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3816 se_cmd->tag);
3817
3818 spin_lock_irqsave(&cmd->cmd_lock, flags);
3819 if (cmd->aborted) {
3820 if (cmd->sg_mapped)
3821 qlt_unmap_sg(vha, cmd);
3822
3823 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3824 /*
3825 * It's normal to see 2 calls in this path:
3826 * 1) XFER Rdy completion + CMD_T_ABORT
3827 * 2) TCM TMR - drain_state_list
3828 */
3829 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3830 "multiple abort. %p transport_state %x, t_state %x, "
3831 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3832 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
3833 return -EIO;
3834 }
3835 cmd->aborted = 1;
3836 cmd->trc_flags |= TRC_ABORT;
3837 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3838
3839 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
3840 return 0;
3841 }
3842 EXPORT_SYMBOL(qlt_abort_cmd);
3843
3844 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3845 {
3846 struct fc_port *sess = cmd->sess;
3847
3848 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3849 "%s: se_cmd[%p] ox_id %04x\n",
3850 __func__, &cmd->se_cmd,
3851 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3852
3853 BUG_ON(cmd->cmd_in_wq);
3854
3855 if (!cmd->q_full)
3856 qlt_decr_num_pend_cmds(cmd->vha);
3857
3858 BUG_ON(cmd->sg_mapped);
3859 cmd->jiffies_at_free = get_jiffies_64();
3860
3861 if (!sess || !sess->se_sess) {
3862 WARN_ON(1);
3863 return;
3864 }
3865 cmd->jiffies_at_free = get_jiffies_64();
3866 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
3867 }
3868 EXPORT_SYMBOL(qlt_free_cmd);
3869
3870 /*
3871 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3872 */
3873 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
3874 struct qla_tgt_cmd *cmd, uint32_t status)
3875 {
3876 int term = 0;
3877 struct scsi_qla_host *vha = qpair->vha;
3878
3879 if (cmd->se_cmd.prot_op)
3880 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
3881 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3882 "se_cmd=%p tag[%x] op %#x/%s",
3883 cmd->lba, cmd->lba,
3884 cmd->num_blks, &cmd->se_cmd,
3885 cmd->atio.u.isp24.exchange_addr,
3886 cmd->se_cmd.prot_op,
3887 prot_op_str(cmd->se_cmd.prot_op));
3888
3889 if (ctio != NULL) {
3890 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3891
3892 term = !(c->flags &
3893 cpu_to_le16(OF_TERM_EXCH));
3894 } else
3895 term = 1;
3896
3897 if (term)
3898 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
3899
3900 return term;
3901 }
3902
3903
3904 /* ha->hardware_lock supposed to be held on entry */
3905 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3906 struct rsp_que *rsp, uint32_t handle, void *ctio)
3907 {
3908 void *cmd = NULL;
3909 struct req_que *req;
3910 int qid = GET_QID(handle);
3911 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
3912
3913 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3914 return NULL;
3915
3916 if (qid == rsp->req->id) {
3917 req = rsp->req;
3918 } else if (vha->hw->req_q_map[qid]) {
3919 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3920 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3921 vha->vp_idx, rsp->id, handle);
3922 req = vha->hw->req_q_map[qid];
3923 } else {
3924 return NULL;
3925 }
3926
3927 h &= QLA_CMD_HANDLE_MASK;
3928
3929 if (h != QLA_TGT_NULL_HANDLE) {
3930 if (unlikely(h >= req->num_outstanding_cmds)) {
3931 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3932 "qla_target(%d): Wrong handle %x received\n",
3933 vha->vp_idx, handle);
3934 return NULL;
3935 }
3936
3937 cmd = req->outstanding_cmds[h];
3938 if (unlikely(cmd == NULL)) {
3939 ql_dbg(ql_dbg_async, vha, 0xe053,
3940 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3941 vha->vp_idx, handle, req->id, rsp->id);
3942 return NULL;
3943 }
3944 req->outstanding_cmds[h] = NULL;
3945 } else if (ctio != NULL) {
3946 /* We can't get loop ID from CTIO7 */
3947 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3948 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3949 "support NULL handles\n", vha->vp_idx);
3950 return NULL;
3951 }
3952
3953 return cmd;
3954 }
3955
3956 /*
3957 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3958 */
3959 static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3960 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
3961 {
3962 struct qla_hw_data *ha = vha->hw;
3963 struct se_cmd *se_cmd;
3964 struct qla_tgt_cmd *cmd;
3965 struct qla_qpair *qpair = rsp->qpair;
3966
3967 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3968 /* That could happen only in case of an error/reset/abort */
3969 if (status != CTIO_SUCCESS) {
3970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3971 "Intermediate CTIO received"
3972 " (status %x)\n", status);
3973 }
3974 return;
3975 }
3976
3977 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
3978 if (cmd == NULL)
3979 return;
3980
3981 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) &&
3982 cmd->sess) {
3983 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess,
3984 (struct ctio7_from_24xx *)ctio);
3985 }
3986
3987 se_cmd = &cmd->se_cmd;
3988 cmd->cmd_sent_to_fw = 0;
3989
3990 qlt_unmap_sg(vha, cmd);
3991
3992 if (unlikely(status != CTIO_SUCCESS)) {
3993 switch (status & 0xFFFF) {
3994 case CTIO_INVALID_RX_ID:
3995 if (printk_ratelimit())
3996 dev_info(&vha->hw->pdev->dev,
3997 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n",
3998 vha->vp_idx, cmd->atio.u.isp24.attr,
3999 ((cmd->ctio_flags >> 9) & 0xf),
4000 cmd->ctio_flags);
4001
4002 break;
4003 case CTIO_LIP_RESET:
4004 case CTIO_TARGET_RESET:
4005 case CTIO_ABORTED:
4006 /* driver request abort via Terminate exchange */
4007 case CTIO_TIMEOUT:
4008 /* They are OK */
4009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
4010 "qla_target(%d): CTIO with "
4011 "status %#x received, state %x, se_cmd %p, "
4012 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
4013 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
4014 status, cmd->state, se_cmd);
4015 break;
4016
4017 case CTIO_PORT_LOGGED_OUT:
4018 case CTIO_PORT_UNAVAILABLE:
4019 {
4020 int logged_out =
4021 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
4022
4023 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
4024 "qla_target(%d): CTIO with %s status %x "
4025 "received (state %x, se_cmd %p)\n", vha->vp_idx,
4026 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
4027 status, cmd->state, se_cmd);
4028
4029 if (logged_out && cmd->sess) {
4030 /*
4031 * Session is already logged out, but we need
4032 * to notify initiator, who's not aware of this
4033 */
4034 cmd->sess->send_els_logo = 1;
4035 ql_dbg(ql_dbg_disc, vha, 0x20f8,
4036 "%s %d %8phC post del sess\n",
4037 __func__, __LINE__, cmd->sess->port_name);
4038
4039 qlt_schedule_sess_for_deletion(cmd->sess);
4040 }
4041 break;
4042 }
4043 case CTIO_DIF_ERROR: {
4044 struct ctio_crc_from_fw *crc =
4045 (struct ctio_crc_from_fw *)ctio;
4046 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
4047 "qla_target(%d): CTIO with DIF_ERROR status %x "
4048 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
4049 "expect_dif[0x%llx]\n",
4050 vha->vp_idx, status, cmd->state, se_cmd,
4051 *((u64 *)&crc->actual_dif[0]),
4052 *((u64 *)&crc->expected_dif[0]));
4053
4054 qlt_handle_dif_error(qpair, cmd, ctio);
4055 return;
4056 }
4057
4058 case CTIO_FAST_AUTH_ERR:
4059 case CTIO_FAST_INCOMP_PAD_LEN:
4060 case CTIO_FAST_INVALID_REQ:
4061 case CTIO_FAST_SPI_ERR:
4062 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
4063 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n",
4064 vha->vp_idx, status, cmd->state, se_cmd);
4065 break;
4066
4067 default:
4068 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
4069 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
4070 vha->vp_idx, status, cmd->state, se_cmd);
4071 break;
4072 }
4073
4074
4075 /* "cmd->aborted" means
4076 * cmd is already aborted/terminated, we don't
4077 * need to terminate again. The exchange is already
4078 * cleaned up/freed at FW level. Just cleanup at driver
4079 * level.
4080 */
4081 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
4082 (!cmd->aborted)) {
4083 cmd->trc_flags |= TRC_CTIO_ERR;
4084 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
4085 return;
4086 }
4087 }
4088
4089 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
4090 cmd->trc_flags |= TRC_CTIO_DONE;
4091 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
4092 cmd->state = QLA_TGT_STATE_DATA_IN;
4093
4094 if (status == CTIO_SUCCESS)
4095 cmd->write_data_transferred = 1;
4096
4097 ha->tgt.tgt_ops->handle_data(cmd);
4098 return;
4099 } else if (cmd->aborted) {
4100 cmd->trc_flags |= TRC_CTIO_ABORTED;
4101 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
4102 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
4103 } else {
4104 cmd->trc_flags |= TRC_CTIO_STRANGE;
4105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
4106 "qla_target(%d): A command in state (%d) should "
4107 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
4108 }
4109
4110 if (unlikely(status != CTIO_SUCCESS) &&
4111 !cmd->aborted) {
4112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
4113 dump_stack();
4114 }
4115
4116 ha->tgt.tgt_ops->free_cmd(cmd);
4117 }
4118
4119 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
4120 uint8_t task_codes)
4121 {
4122 int fcp_task_attr;
4123
4124 switch (task_codes) {
4125 case ATIO_SIMPLE_QUEUE:
4126 fcp_task_attr = TCM_SIMPLE_TAG;
4127 break;
4128 case ATIO_HEAD_OF_QUEUE:
4129 fcp_task_attr = TCM_HEAD_TAG;
4130 break;
4131 case ATIO_ORDERED_QUEUE:
4132 fcp_task_attr = TCM_ORDERED_TAG;
4133 break;
4134 case ATIO_ACA_QUEUE:
4135 fcp_task_attr = TCM_ACA_TAG;
4136 break;
4137 case ATIO_UNTAGGED:
4138 fcp_task_attr = TCM_SIMPLE_TAG;
4139 break;
4140 default:
4141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4142 "qla_target: unknown task code %x, use ORDERED instead\n",
4143 task_codes);
4144 fcp_task_attr = TCM_ORDERED_TAG;
4145 break;
4146 }
4147
4148 return fcp_task_attr;
4149 }
4150
4151 /*
4152 * Process context for I/O path into tcm_qla2xxx code
4153 */
4154 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
4155 {
4156 scsi_qla_host_t *vha = cmd->vha;
4157 struct qla_hw_data *ha = vha->hw;
4158 struct fc_port *sess = cmd->sess;
4159 struct atio_from_isp *atio = &cmd->atio;
4160 unsigned char *cdb;
4161 unsigned long flags;
4162 uint32_t data_length;
4163 int ret, fcp_task_attr, data_dir, bidi = 0;
4164 struct qla_qpair *qpair = cmd->qpair;
4165
4166 cmd->cmd_in_wq = 0;
4167 cmd->trc_flags |= TRC_DO_WORK;
4168
4169 if (cmd->aborted) {
4170 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4171 "cmd with tag %u is aborted\n",
4172 cmd->atio.u.isp24.exchange_addr);
4173 goto out_term;
4174 }
4175
4176 spin_lock_init(&cmd->cmd_lock);
4177 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
4178 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr);
4179
4180 if (atio->u.isp24.fcp_cmnd.rddata &&
4181 atio->u.isp24.fcp_cmnd.wrdata) {
4182 bidi = 1;
4183 data_dir = DMA_TO_DEVICE;
4184 } else if (atio->u.isp24.fcp_cmnd.rddata)
4185 data_dir = DMA_FROM_DEVICE;
4186 else if (atio->u.isp24.fcp_cmnd.wrdata)
4187 data_dir = DMA_TO_DEVICE;
4188 else
4189 data_dir = DMA_NONE;
4190
4191 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4192 atio->u.isp24.fcp_cmnd.task_attr);
4193 data_length = get_datalen_for_atio(atio);
4194
4195 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4196 fcp_task_attr, data_dir, bidi);
4197 if (ret != 0)
4198 goto out_term;
4199 /*
4200 * Drop extra session reference from qlt_handle_cmd_for_atio().
4201 */
4202 ha->tgt.tgt_ops->put_sess(sess);
4203 return;
4204
4205 out_term:
4206 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
4207 /*
4208 * cmd has not sent to target yet, so pass NULL as the second
4209 * argument to qlt_send_term_exchange() and free the memory here.
4210 */
4211 cmd->trc_flags |= TRC_DO_WORK_ERR;
4212 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4213 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
4214
4215 qlt_decr_num_pend_cmds(vha);
4216 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
4217 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4218
4219 ha->tgt.tgt_ops->put_sess(sess);
4220 }
4221
4222 static void qlt_do_work(struct work_struct *work)
4223 {
4224 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
4225 scsi_qla_host_t *vha = cmd->vha;
4226 unsigned long flags;
4227
4228 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4229 list_del(&cmd->cmd_list);
4230 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4231
4232 __qlt_do_work(cmd);
4233 }
4234
4235 void qlt_clr_qp_table(struct scsi_qla_host *vha)
4236 {
4237 unsigned long flags;
4238 struct qla_hw_data *ha = vha->hw;
4239 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4240 void *node;
4241 u64 key = 0;
4242
4243 ql_log(ql_log_info, vha, 0x706c,
4244 "User update Number of Active Qpairs %d\n",
4245 ha->tgt.num_act_qpairs);
4246
4247 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4248
4249 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4250 btree_remove64(&tgt->lun_qpair_map, key);
4251
4252 ha->base_qpair->lun_cnt = 0;
4253 for (key = 0; key < ha->max_qpairs; key++)
4254 if (ha->queue_pair_map[key])
4255 ha->queue_pair_map[key]->lun_cnt = 0;
4256
4257 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4258 }
4259
4260 static void qlt_assign_qpair(struct scsi_qla_host *vha,
4261 struct qla_tgt_cmd *cmd)
4262 {
4263 struct qla_qpair *qpair, *qp;
4264 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4265 struct qla_qpair_hint *h;
4266
4267 if (vha->flags.qpairs_available) {
4268 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4269 if (unlikely(!h)) {
4270 /* spread lun to qpair ratio evently */
4271 int lcnt = 0, rc;
4272 struct scsi_qla_host *base_vha =
4273 pci_get_drvdata(vha->hw->pdev);
4274
4275 qpair = vha->hw->base_qpair;
4276 if (qpair->lun_cnt == 0) {
4277 qpair->lun_cnt++;
4278 h = qla_qpair_to_hint(tgt, qpair);
4279 BUG_ON(!h);
4280 rc = btree_insert64(&tgt->lun_qpair_map,
4281 cmd->unpacked_lun, h, GFP_ATOMIC);
4282 if (rc) {
4283 qpair->lun_cnt--;
4284 ql_log(ql_log_info, vha, 0xd037,
4285 "Unable to insert lun %llx into lun_qpair_map\n",
4286 cmd->unpacked_lun);
4287 }
4288 goto out;
4289 } else {
4290 lcnt = qpair->lun_cnt;
4291 }
4292
4293 h = NULL;
4294 list_for_each_entry(qp, &base_vha->qp_list,
4295 qp_list_elem) {
4296 if (qp->lun_cnt == 0) {
4297 qp->lun_cnt++;
4298 h = qla_qpair_to_hint(tgt, qp);
4299 BUG_ON(!h);
4300 rc = btree_insert64(&tgt->lun_qpair_map,
4301 cmd->unpacked_lun, h, GFP_ATOMIC);
4302 if (rc) {
4303 qp->lun_cnt--;
4304 ql_log(ql_log_info, vha, 0xd038,
4305 "Unable to insert lun %llx into lun_qpair_map\n",
4306 cmd->unpacked_lun);
4307 }
4308 qpair = qp;
4309 goto out;
4310 } else {
4311 if (qp->lun_cnt < lcnt) {
4312 lcnt = qp->lun_cnt;
4313 qpair = qp;
4314 continue;
4315 }
4316 }
4317 }
4318 BUG_ON(!qpair);
4319 qpair->lun_cnt++;
4320 h = qla_qpair_to_hint(tgt, qpair);
4321 BUG_ON(!h);
4322 rc = btree_insert64(&tgt->lun_qpair_map,
4323 cmd->unpacked_lun, h, GFP_ATOMIC);
4324 if (rc) {
4325 qpair->lun_cnt--;
4326 ql_log(ql_log_info, vha, 0xd039,
4327 "Unable to insert lun %llx into lun_qpair_map\n",
4328 cmd->unpacked_lun);
4329 }
4330 }
4331 } else {
4332 h = &tgt->qphints[0];
4333 }
4334 out:
4335 cmd->qpair = h->qpair;
4336 cmd->se_cmd.cpuid = h->cpuid;
4337 }
4338
4339 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
4340 struct fc_port *sess,
4341 struct atio_from_isp *atio)
4342 {
4343 struct qla_tgt_cmd *cmd;
4344
4345 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess);
4346 if (!cmd)
4347 return NULL;
4348
4349 cmd->cmd_type = TYPE_TGT_CMD;
4350 memcpy(&cmd->atio, atio, sizeof(*atio));
4351 INIT_LIST_HEAD(&cmd->sess_cmd_list);
4352 cmd->state = QLA_TGT_STATE_NEW;
4353 cmd->tgt = vha->vha_tgt.qla_tgt;
4354 qlt_incr_num_pend_cmds(vha);
4355 cmd->vha = vha;
4356 cmd->sess = sess;
4357 cmd->loop_id = sess->loop_id;
4358 cmd->conf_compl_supported = sess->conf_compl_supported;
4359
4360 cmd->trc_flags = 0;
4361 cmd->jiffies_at_alloc = get_jiffies_64();
4362
4363 cmd->unpacked_lun = scsilun_to_int(
4364 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4365 qlt_assign_qpair(vha, cmd);
4366 cmd->reset_count = vha->hw->base_qpair->chip_reset;
4367 cmd->vp_idx = vha->vp_idx;
4368 cmd->edif = sess->edif.enable;
4369
4370 return cmd;
4371 }
4372
4373 /* ha->hardware_lock supposed to be held on entry */
4374 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4375 struct atio_from_isp *atio)
4376 {
4377 struct qla_hw_data *ha = vha->hw;
4378 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4379 struct fc_port *sess;
4380 struct qla_tgt_cmd *cmd;
4381 unsigned long flags;
4382 port_id_t id;
4383
4384 if (unlikely(tgt->tgt_stop)) {
4385 ql_dbg(ql_dbg_io, vha, 0x3061,
4386 "New command while device %p is shutting down\n", tgt);
4387 return -ENODEV;
4388 }
4389
4390 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
4391 if (IS_SW_RESV_ADDR(id))
4392 return -EBUSY;
4393
4394 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4395 if (unlikely(!sess))
4396 return -EFAULT;
4397
4398 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4399 * session deletion, but it's still in sess_del_work wq */
4400 if (sess->deleted) {
4401 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
4402 "New command while old session %p is being deleted\n",
4403 sess);
4404 return -EFAULT;
4405 }
4406
4407 /*
4408 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4409 */
4410 if (!kref_get_unless_zero(&sess->sess_kref)) {
4411 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
4412 "%s: kref_get fail, %8phC oxid %x \n",
4413 __func__, sess->port_name,
4414 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4415 return -EFAULT;
4416 }
4417
4418 cmd = qlt_get_tag(vha, sess, atio);
4419 if (!cmd) {
4420 ql_dbg(ql_dbg_io, vha, 0x3062,
4421 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4422 ha->tgt.tgt_ops->put_sess(sess);
4423 return -EBUSY;
4424 }
4425
4426 cmd->cmd_in_wq = 1;
4427 cmd->trc_flags |= TRC_NEW_CMD;
4428
4429 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4430 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4431 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4432
4433 INIT_WORK(&cmd->work, qlt_do_work);
4434 if (vha->flags.qpairs_available) {
4435 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4436 } else if (ha->msix_count) {
4437 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4438 queue_work(qla_tgt_wq, &cmd->work);
4439 else
4440 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4441 &cmd->work);
4442 } else {
4443 queue_work(qla_tgt_wq, &cmd->work);
4444 }
4445
4446 return 0;
4447 }
4448
4449 /* ha->hardware_lock supposed to be held on entry */
4450 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
4451 int fn, void *iocb, int flags)
4452 {
4453 struct scsi_qla_host *vha = sess->vha;
4454 struct qla_hw_data *ha = vha->hw;
4455 struct qla_tgt_mgmt_cmd *mcmd;
4456 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4457 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
4458
4459 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4460 if (!mcmd) {
4461 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4462 "qla_target(%d): Allocation of management "
4463 "command failed, some commands and their data could "
4464 "leak\n", vha->vp_idx);
4465 return -ENOMEM;
4466 }
4467 memset(mcmd, 0, sizeof(*mcmd));
4468 mcmd->sess = sess;
4469
4470 if (iocb) {
4471 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4472 sizeof(mcmd->orig_iocb.imm_ntfy));
4473 }
4474 mcmd->tmr_func = fn;
4475 mcmd->flags = flags;
4476 mcmd->reset_count = ha->base_qpair->chip_reset;
4477 mcmd->qpair = h->qpair;
4478 mcmd->vha = vha;
4479 mcmd->se_cmd.cpuid = h->cpuid;
4480 mcmd->unpacked_lun = lun;
4481
4482 switch (fn) {
4483 case QLA_TGT_LUN_RESET:
4484 case QLA_TGT_CLEAR_TS:
4485 case QLA_TGT_ABORT_TS:
4486 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4487 fallthrough;
4488 case QLA_TGT_CLEAR_ACA:
4489 h = qlt_find_qphint(vha, mcmd->unpacked_lun);
4490 mcmd->qpair = h->qpair;
4491 mcmd->se_cmd.cpuid = h->cpuid;
4492 break;
4493
4494 case QLA_TGT_TARGET_RESET:
4495 case QLA_TGT_NEXUS_LOSS_SESS:
4496 case QLA_TGT_NEXUS_LOSS:
4497 case QLA_TGT_ABORT_ALL:
4498 default:
4499 /* no-op */
4500 break;
4501 }
4502
4503 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
4504 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq,
4505 &mcmd->work);
4506
4507 return 0;
4508 }
4509
4510 /* ha->hardware_lock supposed to be held on entry */
4511 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4512 {
4513 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4514 struct qla_hw_data *ha = vha->hw;
4515 struct fc_port *sess;
4516 u64 unpacked_lun;
4517 int fn;
4518 unsigned long flags;
4519
4520 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4521
4522 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4523 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4524 a->u.isp24.fcp_hdr.s_id);
4525 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4526
4527 unpacked_lun =
4528 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4529
4530 if (sess == NULL || sess->deleted)
4531 return -EFAULT;
4532
4533 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4534 }
4535
4536 /* ha->hardware_lock supposed to be held on entry */
4537 static int __qlt_abort_task(struct scsi_qla_host *vha,
4538 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
4539 {
4540 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4541 struct qla_hw_data *ha = vha->hw;
4542 struct qla_tgt_mgmt_cmd *mcmd;
4543 u64 unpacked_lun;
4544 int rc;
4545
4546 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4547 if (mcmd == NULL) {
4548 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4549 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4550 vha->vp_idx, __func__);
4551 return -ENOMEM;
4552 }
4553 memset(mcmd, 0, sizeof(*mcmd));
4554
4555 mcmd->sess = sess;
4556 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4557 sizeof(mcmd->orig_iocb.imm_ntfy));
4558
4559 unpacked_lun =
4560 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4561 mcmd->reset_count = ha->base_qpair->chip_reset;
4562 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
4563 mcmd->qpair = ha->base_qpair;
4564
4565 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
4566 le16_to_cpu(iocb->u.isp2x.seq_id));
4567 if (rc != 0) {
4568 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4569 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4570 vha->vp_idx, rc);
4571 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4572 return -EFAULT;
4573 }
4574
4575 return 0;
4576 }
4577
4578 /* ha->hardware_lock supposed to be held on entry */
4579 static int qlt_abort_task(struct scsi_qla_host *vha,
4580 struct imm_ntfy_from_isp *iocb)
4581 {
4582 struct qla_hw_data *ha = vha->hw;
4583 struct fc_port *sess;
4584 int loop_id;
4585 unsigned long flags;
4586
4587 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4588
4589 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4590 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4591 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4592
4593 if (sess == NULL) {
4594 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4595 "qla_target(%d): task abort for unexisting "
4596 "session\n", vha->vp_idx);
4597 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4598 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4599 }
4600
4601 return __qlt_abort_task(vha, iocb, sess);
4602 }
4603
4604 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4605 {
4606 if (rc != MBS_COMMAND_COMPLETE) {
4607 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4608 "%s: se_sess %p / sess %p from"
4609 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4610 " LOGO failed: %#x\n",
4611 __func__,
4612 fcport->se_sess,
4613 fcport,
4614 fcport->port_name, fcport->loop_id,
4615 fcport->d_id.b.domain, fcport->d_id.b.area,
4616 fcport->d_id.b.al_pa, rc);
4617 }
4618
4619 fcport->logout_completed = 1;
4620 }
4621
4622 /*
4623 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4624 *
4625 * Schedules sessions with matching port_id/loop_id but different wwn for
4626 * deletion. Returns existing session with matching wwn if present.
4627 * Null otherwise.
4628 */
4629 struct fc_port *
4630 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
4631 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
4632 {
4633 struct fc_port *sess = NULL, *other_sess;
4634 uint64_t other_wwn;
4635
4636 *conflict_sess = NULL;
4637
4638 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
4639
4640 other_wwn = wwn_to_u64(other_sess->port_name);
4641
4642 if (wwn == other_wwn) {
4643 WARN_ON(sess);
4644 sess = other_sess;
4645 continue;
4646 }
4647
4648 /* find other sess with nport_id collision */
4649 if (port_id.b24 == other_sess->d_id.b24) {
4650 if (loop_id != other_sess->loop_id) {
4651 ql_dbg(ql_dbg_disc, vha, 0x1000c,
4652 "Invalidating sess %p loop_id %d wwn %llx.\n",
4653 other_sess, other_sess->loop_id, other_wwn);
4654
4655 /*
4656 * logout_on_delete is set by default, but another
4657 * session that has the same s_id/loop_id combo
4658 * might have cleared it when requested this session
4659 * deletion, so don't touch it
4660 */
4661 qlt_schedule_sess_for_deletion(other_sess);
4662 } else {
4663 /*
4664 * Another wwn used to have our s_id/loop_id
4665 * kill the session, but don't free the loop_id
4666 */
4667 ql_dbg(ql_dbg_disc, vha, 0xf01b,
4668 "Invalidating sess %p loop_id %d wwn %llx.\n",
4669 other_sess, other_sess->loop_id, other_wwn);
4670
4671 other_sess->keep_nport_handle = 1;
4672 if (other_sess->disc_state != DSC_DELETED)
4673 *conflict_sess = other_sess;
4674 qlt_schedule_sess_for_deletion(other_sess);
4675 }
4676 continue;
4677 }
4678
4679 /* find other sess with nport handle collision */
4680 if ((loop_id == other_sess->loop_id) &&
4681 (loop_id != FC_NO_LOOP_ID)) {
4682 ql_dbg(ql_dbg_disc, vha, 0x1000d,
4683 "Invalidating sess %p loop_id %d wwn %llx.\n",
4684 other_sess, other_sess->loop_id, other_wwn);
4685
4686 /* Same loop_id but different s_id
4687 * Ok to kill and logout */
4688 qlt_schedule_sess_for_deletion(other_sess);
4689 }
4690 }
4691
4692 return sess;
4693 }
4694
4695 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4696 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4697 {
4698 struct qla_tgt_sess_op *op;
4699 struct qla_tgt_cmd *cmd;
4700 uint32_t key;
4701 int count = 0;
4702 unsigned long flags;
4703
4704 key = (((u32)s_id->b.domain << 16) |
4705 ((u32)s_id->b.area << 8) |
4706 ((u32)s_id->b.al_pa));
4707
4708 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4709 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4710 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4711
4712 if (op_key == key) {
4713 op->aborted = true;
4714 count++;
4715 }
4716 }
4717
4718 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4719 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4720
4721 if (cmd_key == key) {
4722 cmd->aborted = 1;
4723 count++;
4724 }
4725 }
4726 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4727
4728 return count;
4729 }
4730
4731 static int qlt_handle_login(struct scsi_qla_host *vha,
4732 struct imm_ntfy_from_isp *iocb)
4733 {
4734 struct fc_port *sess = NULL, *conflict_sess = NULL;
4735 uint64_t wwn;
4736 port_id_t port_id;
4737 uint16_t loop_id, wd3_lo;
4738 int res = 0;
4739 struct qlt_plogi_ack_t *pla;
4740 unsigned long flags;
4741
4742 lockdep_assert_held(&vha->hw->hardware_lock);
4743
4744 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4745
4746 port_id.b.domain = iocb->u.isp24.port_id[2];
4747 port_id.b.area = iocb->u.isp24.port_id[1];
4748 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4749 port_id.b.rsvd_1 = 0;
4750
4751 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4752
4753 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4754 abort_cmds_for_s_id(vha, &port_id);
4755
4756 if (wwn) {
4757 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4758 sess = qlt_find_sess_invalidate_other(vha, wwn,
4759 port_id, loop_id, &conflict_sess);
4760 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4761 } else {
4762 ql_dbg(ql_dbg_disc, vha, 0xffff,
4763 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ",
4764 __func__, __LINE__, loop_id, port_id.b24);
4765 qlt_send_term_imm_notif(vha, iocb, 1);
4766 goto out;
4767 }
4768
4769 if (IS_SW_RESV_ADDR(port_id)) {
4770 res = 1;
4771 goto out;
4772 }
4773
4774 if (vha->hw->flags.edif_enabled &&
4775 !(vha->e_dbell.db_flags & EDB_ACTIVE) &&
4776 iocb->u.isp24.status_subcode == ELS_PLOGI &&
4777 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) {
4778 ql_dbg(ql_dbg_disc, vha, 0xffff,
4779 "%s %d Term INOT due to app not available lid=%d, NportID %06X ",
4780 __func__, __LINE__, loop_id, port_id.b24);
4781 qlt_send_term_imm_notif(vha, iocb, 1);
4782 goto out;
4783 }
4784
4785 if (vha->hw->flags.edif_enabled) {
4786 if (DBELL_INACTIVE(vha)) {
4787 ql_dbg(ql_dbg_disc, vha, 0xffff,
4788 "%s %d Term INOT due to app not started lid=%d, NportID %06X ",
4789 __func__, __LINE__, loop_id, port_id.b24);
4790 qlt_send_term_imm_notif(vha, iocb, 1);
4791 goto out;
4792 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI &&
4793 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) {
4794 ql_dbg(ql_dbg_disc, vha, 0xffff,
4795 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ",
4796 __func__, __LINE__, loop_id, port_id.b24);
4797 qlt_send_term_imm_notif(vha, iocb, 1);
4798 goto out;
4799 }
4800 }
4801
4802 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4803 if (!pla) {
4804 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff,
4805 "%s %d %8phC Term INOT due to mem alloc fail",
4806 __func__, __LINE__,
4807 iocb->u.isp24.port_name);
4808 qlt_send_term_imm_notif(vha, iocb, 1);
4809 goto out;
4810 }
4811
4812 if (conflict_sess) {
4813 conflict_sess->login_gen++;
4814 qlt_plogi_ack_link(vha, pla, conflict_sess,
4815 QLT_PLOGI_LINK_CONFLICT);
4816 }
4817
4818 if (!sess) {
4819 pla->ref_count++;
4820 ql_dbg(ql_dbg_disc, vha, 0xffff,
4821 "%s %d %8phC post new sess\n",
4822 __func__, __LINE__, iocb->u.isp24.port_name);
4823 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4824 qla24xx_post_newsess_work(vha, &port_id,
4825 iocb->u.isp24.port_name,
4826 iocb->u.isp24.u.plogi.node_name,
4827 pla, 0);
4828 else
4829 qla24xx_post_newsess_work(vha, &port_id,
4830 iocb->u.isp24.port_name, NULL,
4831 pla, 0);
4832
4833 goto out;
4834 }
4835
4836 if (sess->disc_state == DSC_UPD_FCPORT) {
4837 u16 sec;
4838
4839 /*
4840 * Remote port registration is still going on from
4841 * previous login. Allow it to finish before we
4842 * accept the new login.
4843 */
4844 sess->next_disc_state = DSC_DELETE_PEND;
4845 sec = jiffies_to_msecs(jiffies -
4846 sess->jiffies_at_registration) / 1000;
4847 if (sess->sec_since_registration < sec && sec &&
4848 !(sec % 5)) {
4849 sess->sec_since_registration = sec;
4850 ql_dbg(ql_dbg_disc, vha, 0xffff,
4851 "%s %8phC - Slow Rport registration (%d Sec)\n",
4852 __func__, sess->port_name, sec);
4853 }
4854
4855 if (!conflict_sess) {
4856 list_del(&pla->list);
4857 kmem_cache_free(qla_tgt_plogi_cachep, pla);
4858 }
4859
4860 qlt_send_term_imm_notif(vha, iocb, 1);
4861 goto out;
4862 }
4863
4864 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4865 sess->d_id = port_id;
4866 sess->login_gen++;
4867 sess->loop_id = loop_id;
4868
4869 if (iocb->u.isp24.status_subcode == ELS_PLOGI) {
4870 /* remote port has assigned Port ID */
4871 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess))
4872 vha->d_id = sess->d_id;
4873
4874 ql_dbg(ql_dbg_disc, vha, 0xffff,
4875 "%s %8phC - send port online\n",
4876 __func__, sess->port_name);
4877
4878 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE,
4879 sess->d_id.b24);
4880 }
4881
4882 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4883 sess->fw_login_state = DSC_LS_PRLI_PEND;
4884 sess->local = 0;
4885 sess->loop_id = loop_id;
4886 sess->d_id = port_id;
4887 sess->fw_login_state = DSC_LS_PRLI_PEND;
4888 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4889
4890 if (wd3_lo & BIT_7)
4891 sess->conf_compl_supported = 1;
4892
4893 if ((wd3_lo & BIT_4) == 0)
4894 sess->port_type = FCT_INITIATOR;
4895 else
4896 sess->port_type = FCT_TARGET;
4897
4898 } else
4899 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4900
4901
4902 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4903 "%s %d %8phC DS %d\n",
4904 __func__, __LINE__, sess->port_name, sess->disc_state);
4905
4906 switch (sess->disc_state) {
4907 case DSC_DELETED:
4908 case DSC_LOGIN_PEND:
4909 qlt_plogi_ack_unref(vha, pla);
4910 break;
4911
4912 default:
4913 /*
4914 * Under normal circumstances we want to release nport handle
4915 * during LOGO process to avoid nport handle leaks inside FW.
4916 * The exception is when LOGO is done while another PLOGI with
4917 * the same nport handle is waiting as might be the case here.
4918 * Note: there is always a possibily of a race where session
4919 * deletion has already started for other reasons (e.g. ACL
4920 * removal) and now PLOGI arrives:
4921 * 1. if PLOGI arrived in FW after nport handle has been freed,
4922 * FW must have assigned this PLOGI a new/same handle and we
4923 * can proceed ACK'ing it as usual when session deletion
4924 * completes.
4925 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4926 * bit reached it, the handle has now been released. We'll
4927 * get an error when we ACK this PLOGI. Nothing will be sent
4928 * back to initiator. Initiator should eventually retry
4929 * PLOGI and situation will correct itself.
4930 */
4931 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4932 (sess->d_id.b24 == port_id.b24));
4933
4934 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4935 "%s %d %8phC post del sess\n",
4936 __func__, __LINE__, sess->port_name);
4937
4938
4939 qlt_schedule_sess_for_deletion(sess);
4940 break;
4941 }
4942 out:
4943 return res;
4944 }
4945
4946 /*
4947 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4948 */
4949 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4950 struct imm_ntfy_from_isp *iocb)
4951 {
4952 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4953 struct qla_hw_data *ha = vha->hw;
4954 struct fc_port *sess = NULL, *conflict_sess = NULL;
4955 uint64_t wwn;
4956 port_id_t port_id;
4957 uint16_t loop_id;
4958 uint16_t wd3_lo;
4959 int res = 0;
4960 unsigned long flags;
4961
4962 lockdep_assert_held(&ha->hardware_lock);
4963
4964 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4965
4966 port_id.b.domain = iocb->u.isp24.port_id[2];
4967 port_id.b.area = iocb->u.isp24.port_id[1];
4968 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4969 port_id.b.rsvd_1 = 0;
4970
4971 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4972
4973 ql_dbg(ql_dbg_disc, vha, 0xf026,
4974 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4975 vha->vp_idx, iocb->u.isp24.port_id[2],
4976 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4977 iocb->u.isp24.status_subcode, loop_id,
4978 iocb->u.isp24.port_name);
4979
4980 /* res = 1 means ack at the end of thread
4981 * res = 0 means ack async/later.
4982 */
4983 switch (iocb->u.isp24.status_subcode) {
4984 case ELS_PLOGI:
4985 res = qlt_handle_login(vha, iocb);
4986 break;
4987
4988 case ELS_PRLI:
4989 if (N2N_TOPO(ha)) {
4990 sess = qla2x00_find_fcport_by_wwpn(vha,
4991 iocb->u.isp24.port_name, 1);
4992
4993 if (vha->hw->flags.edif_enabled && sess &&
4994 (!(sess->flags & FCF_FCSP_DEVICE) ||
4995 !sess->edif.authok)) {
4996 ql_dbg(ql_dbg_disc, vha, 0xffff,
4997 "%s %d %8phC Term PRLI due to unauthorize PRLI\n",
4998 __func__, __LINE__, iocb->u.isp24.port_name);
4999 qlt_send_term_imm_notif(vha, iocb, 1);
5000 break;
5001 }
5002
5003 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
5004 ql_dbg(ql_dbg_disc, vha, 0xffff,
5005 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
5006 __func__, __LINE__,
5007 iocb->u.isp24.port_name);
5008 qlt_send_term_imm_notif(vha, iocb, 1);
5009 break;
5010 }
5011
5012 res = qlt_handle_login(vha, iocb);
5013 break;
5014 }
5015
5016 if (IS_SW_RESV_ADDR(port_id)) {
5017 res = 1;
5018 break;
5019 }
5020
5021 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
5022
5023 if (wwn) {
5024 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
5025 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
5026 loop_id, &conflict_sess);
5027 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
5028 }
5029
5030 if (conflict_sess) {
5031 switch (conflict_sess->disc_state) {
5032 case DSC_DELETED:
5033 case DSC_DELETE_PEND:
5034 break;
5035 default:
5036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
5037 "PRLI with conflicting sess %p port %8phC\n",
5038 conflict_sess, conflict_sess->port_name);
5039 conflict_sess->fw_login_state =
5040 DSC_LS_PORT_UNAVAIL;
5041 qlt_send_term_imm_notif(vha, iocb, 1);
5042 res = 0;
5043 break;
5044 }
5045 }
5046
5047 if (sess != NULL) {
5048 bool delete = false;
5049 int sec;
5050
5051 if (vha->hw->flags.edif_enabled && sess &&
5052 (!(sess->flags & FCF_FCSP_DEVICE) ||
5053 !sess->edif.authok)) {
5054 ql_dbg(ql_dbg_disc, vha, 0xffff,
5055 "%s %d %8phC Term PRLI due to unauthorize prli\n",
5056 __func__, __LINE__, iocb->u.isp24.port_name);
5057 qlt_send_term_imm_notif(vha, iocb, 1);
5058 break;
5059 }
5060
5061 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
5062 switch (sess->fw_login_state) {
5063 case DSC_LS_PLOGI_PEND:
5064 case DSC_LS_PLOGI_COMP:
5065 case DSC_LS_PRLI_COMP:
5066 break;
5067 default:
5068 delete = true;
5069 break;
5070 }
5071
5072 switch (sess->disc_state) {
5073 case DSC_UPD_FCPORT:
5074 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
5075 flags);
5076
5077 sec = jiffies_to_msecs(jiffies -
5078 sess->jiffies_at_registration)/1000;
5079 if (sess->sec_since_registration < sec && sec &&
5080 !(sec % 5)) {
5081 sess->sec_since_registration = sec;
5082 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
5083 "%s %8phC : Slow Rport registration(%d Sec)\n",
5084 __func__, sess->port_name, sec);
5085 }
5086 qlt_send_term_imm_notif(vha, iocb, 1);
5087 return 0;
5088
5089 case DSC_LOGIN_PEND:
5090 case DSC_GPDB:
5091 case DSC_LOGIN_COMPLETE:
5092 case DSC_ADISC:
5093 delete = false;
5094 break;
5095 default:
5096 break;
5097 }
5098
5099 if (delete) {
5100 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
5101 flags);
5102 /*
5103 * Impatient initiator sent PRLI before last
5104 * PLOGI could finish. Will force him to re-try,
5105 * while last one finishes.
5106 */
5107 ql_log(ql_log_warn, sess->vha, 0xf095,
5108 "sess %p PRLI received, before plogi ack.\n",
5109 sess);
5110 qlt_send_term_imm_notif(vha, iocb, 1);
5111 res = 0;
5112 break;
5113 }
5114
5115 /*
5116 * This shouldn't happen under normal circumstances,
5117 * since we have deleted the old session during PLOGI
5118 */
5119 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
5120 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
5121 sess->loop_id, sess, iocb->u.isp24.nport_handle);
5122
5123 sess->local = 0;
5124 sess->loop_id = loop_id;
5125 sess->d_id = port_id;
5126 sess->fw_login_state = DSC_LS_PRLI_PEND;
5127
5128 if (wd3_lo & BIT_7)
5129 sess->conf_compl_supported = 1;
5130
5131 if ((wd3_lo & BIT_4) == 0)
5132 sess->port_type = FCT_INITIATOR;
5133 else
5134 sess->port_type = FCT_TARGET;
5135
5136 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
5137 }
5138 res = 1; /* send notify ack */
5139
5140 /* Make session global (not used in fabric mode) */
5141 if (ha->current_topology != ISP_CFG_F) {
5142 if (sess) {
5143 ql_dbg(ql_dbg_disc, vha, 0x20fa,
5144 "%s %d %8phC post nack\n",
5145 __func__, __LINE__, sess->port_name);
5146 qla24xx_post_nack_work(vha, sess, iocb,
5147 SRB_NACK_PRLI);
5148 res = 0;
5149 } else {
5150 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
5151 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
5152 qla2xxx_wake_dpc(vha);
5153 }
5154 } else {
5155 if (sess) {
5156 ql_dbg(ql_dbg_disc, vha, 0x20fb,
5157 "%s %d %8phC post nack\n",
5158 __func__, __LINE__, sess->port_name);
5159 qla24xx_post_nack_work(vha, sess, iocb,
5160 SRB_NACK_PRLI);
5161 res = 0;
5162 }
5163 }
5164 break;
5165
5166 case ELS_TPRLO:
5167 if (le16_to_cpu(iocb->u.isp24.flags) &
5168 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
5169 loop_id = 0xFFFF;
5170 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
5171 res = 1;
5172 break;
5173 }
5174 fallthrough;
5175 case ELS_LOGO:
5176 case ELS_PRLO:
5177 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5178 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
5179 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5180
5181 if (sess) {
5182 sess->login_gen++;
5183 sess->fw_login_state = DSC_LS_LOGO_PEND;
5184 sess->logo_ack_needed = 1;
5185 memcpy(sess->iocb, iocb, IOCB_SIZE);
5186 }
5187
5188 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5189
5190 ql_dbg(ql_dbg_disc, vha, 0x20fc,
5191 "%s: logo %llx res %d sess %p ",
5192 __func__, wwn, res, sess);
5193 if (res == 0) {
5194 /*
5195 * cmd went upper layer, look for qlt_xmit_tm_rsp()
5196 * for LOGO_ACK & sess delete
5197 */
5198 BUG_ON(!sess);
5199 res = 0;
5200 } else {
5201 /* cmd did not go to upper layer. */
5202 if (sess) {
5203 qlt_schedule_sess_for_deletion(sess);
5204 res = 0;
5205 }
5206 /* else logo will be ack */
5207 }
5208 break;
5209 case ELS_PDISC:
5210 case ELS_ADISC:
5211 {
5212 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5213
5214 if (tgt->link_reinit_iocb_pending) {
5215 qlt_send_notify_ack(ha->base_qpair,
5216 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5217 tgt->link_reinit_iocb_pending = 0;
5218 }
5219
5220 sess = qla2x00_find_fcport_by_wwpn(vha,
5221 iocb->u.isp24.port_name, 1);
5222 if (sess) {
5223 ql_dbg(ql_dbg_disc, vha, 0x20fd,
5224 "sess %p lid %d|%d DS %d LS %d\n",
5225 sess, sess->loop_id, loop_id,
5226 sess->disc_state, sess->fw_login_state);
5227 }
5228
5229 res = 1; /* send notify ack */
5230 break;
5231 }
5232
5233 case ELS_FLOGI: /* should never happen */
5234 default:
5235 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
5236 "qla_target(%d): Unsupported ELS command %x "
5237 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
5238 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5239 break;
5240 }
5241
5242 ql_dbg(ql_dbg_disc, vha, 0xf026,
5243 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5244 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5245
5246 return res;
5247 }
5248
5249 /*
5250 * ha->hardware_lock supposed to be held on entry.
5251 * Might drop it, then reacquire.
5252 */
5253 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5254 struct imm_ntfy_from_isp *iocb)
5255 {
5256 struct qla_hw_data *ha = vha->hw;
5257 uint32_t add_flags = 0;
5258 int send_notify_ack = 1;
5259 uint16_t status;
5260
5261 lockdep_assert_held(&ha->hardware_lock);
5262
5263 status = le16_to_cpu(iocb->u.isp2x.status);
5264 switch (status) {
5265 case IMM_NTFY_LIP_RESET:
5266 {
5267 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5268 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5269 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5270 iocb->u.isp24.status_subcode);
5271
5272 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5273 send_notify_ack = 0;
5274 break;
5275 }
5276
5277 case IMM_NTFY_LIP_LINK_REINIT:
5278 {
5279 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5280
5281 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5282 "qla_target(%d): LINK REINIT (loop %#x, "
5283 "subcode %x)\n", vha->vp_idx,
5284 le16_to_cpu(iocb->u.isp24.nport_handle),
5285 iocb->u.isp24.status_subcode);
5286 if (tgt->link_reinit_iocb_pending) {
5287 qlt_send_notify_ack(ha->base_qpair,
5288 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5289 }
5290 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5291 tgt->link_reinit_iocb_pending = 1;
5292 /*
5293 * QLogic requires to wait after LINK REINIT for possible
5294 * PDISC or ADISC ELS commands
5295 */
5296 send_notify_ack = 0;
5297 break;
5298 }
5299
5300 case IMM_NTFY_PORT_LOGOUT:
5301 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5302 "qla_target(%d): Port logout (loop "
5303 "%#x, subcode %x)\n", vha->vp_idx,
5304 le16_to_cpu(iocb->u.isp24.nport_handle),
5305 iocb->u.isp24.status_subcode);
5306
5307 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5308 send_notify_ack = 0;
5309 /* The sessions will be cleared in the callback, if needed */
5310 break;
5311
5312 case IMM_NTFY_GLBL_TPRLO:
5313 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5314 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5315 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5316 send_notify_ack = 0;
5317 /* The sessions will be cleared in the callback, if needed */
5318 break;
5319
5320 case IMM_NTFY_PORT_CONFIG:
5321 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5322 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5323 status);
5324 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5325 send_notify_ack = 0;
5326 /* The sessions will be cleared in the callback, if needed */
5327 break;
5328
5329 case IMM_NTFY_GLBL_LOGO:
5330 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5331 "qla_target(%d): Link failure detected\n",
5332 vha->vp_idx);
5333 /* I_T nexus loss */
5334 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5335 send_notify_ack = 0;
5336 break;
5337
5338 case IMM_NTFY_IOCB_OVERFLOW:
5339 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5340 "qla_target(%d): Cannot provide requested "
5341 "capability (IOCB overflowed the immediate notify "
5342 "resource count)\n", vha->vp_idx);
5343 break;
5344
5345 case IMM_NTFY_ABORT_TASK:
5346 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5347 "qla_target(%d): Abort Task (S %08x I %#x -> "
5348 "L %#x)\n", vha->vp_idx,
5349 le16_to_cpu(iocb->u.isp2x.seq_id),
5350 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5351 le16_to_cpu(iocb->u.isp2x.lun));
5352 if (qlt_abort_task(vha, iocb) == 0)
5353 send_notify_ack = 0;
5354 break;
5355
5356 case IMM_NTFY_RESOURCE:
5357 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5358 "qla_target(%d): Out of resources, host %ld\n",
5359 vha->vp_idx, vha->host_no);
5360 break;
5361
5362 case IMM_NTFY_MSG_RX:
5363 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5364 "qla_target(%d): Immediate notify task %x\n",
5365 vha->vp_idx, iocb->u.isp2x.task_flags);
5366 break;
5367
5368 case IMM_NTFY_ELS:
5369 if (qlt_24xx_handle_els(vha, iocb) == 0)
5370 send_notify_ack = 0;
5371 break;
5372 default:
5373 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5374 "qla_target(%d): Received unknown immediate "
5375 "notify status %x\n", vha->vp_idx, status);
5376 break;
5377 }
5378
5379 if (send_notify_ack)
5380 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5381 0, 0);
5382 }
5383
5384 /*
5385 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5386 * This function sends busy to ISP 2xxx or 24xx.
5387 */
5388 static int __qlt_send_busy(struct qla_qpair *qpair,
5389 struct atio_from_isp *atio, uint16_t status)
5390 {
5391 struct scsi_qla_host *vha = qpair->vha;
5392 struct ctio7_to_24xx *ctio24;
5393 struct qla_hw_data *ha = vha->hw;
5394 request_t *pkt;
5395 struct fc_port *sess = NULL;
5396 unsigned long flags;
5397 u16 temp;
5398 port_id_t id;
5399
5400 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
5401
5402 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5403 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1);
5404 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5405 if (!sess) {
5406 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
5407 return 0;
5408 }
5409 /* Sending marker isn't necessary, since we called from ISR */
5410
5411 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
5412 if (!pkt) {
5413 ql_dbg(ql_dbg_io, vha, 0x3063,
5414 "qla_target(%d): %s failed: unable to allocate "
5415 "request packet", vha->vp_idx, __func__);
5416 return -ENOMEM;
5417 }
5418
5419 qpair->tgt_counters.num_q_full_sent++;
5420 pkt->entry_count = 1;
5421 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5422
5423 ctio24 = (struct ctio7_to_24xx *)pkt;
5424 ctio24->entry_type = CTIO_TYPE7;
5425 ctio24->nport_handle = cpu_to_le16(sess->loop_id);
5426 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5427 ctio24->vp_index = vha->vp_idx;
5428 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
5429 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5430 temp = (atio->u.isp24.attr << 9) |
5431 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5432 CTIO7_FLAGS_DONT_RET_CTIO;
5433 ctio24->u.status1.flags = cpu_to_le16(temp);
5434 /*
5435 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5436 * if the explicit conformation is used.
5437 */
5438 ctio24->u.status1.ox_id =
5439 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
5440 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5441
5442 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
5443
5444 if (ctio24->u.status1.residual != 0)
5445 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER);
5446
5447 /* Memory Barrier */
5448 wmb();
5449 if (qpair->reqq_start_iocbs)
5450 qpair->reqq_start_iocbs(qpair);
5451 else
5452 qla2x00_start_iocbs(vha, qpair->req);
5453 return 0;
5454 }
5455
5456 /*
5457 * This routine is used to allocate a command for either a QFull condition
5458 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5459 * out previously.
5460 */
5461 static void
5462 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5463 struct atio_from_isp *atio, uint16_t status, int qfull)
5464 {
5465 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5466 struct qla_hw_data *ha = vha->hw;
5467 struct fc_port *sess;
5468 struct qla_tgt_cmd *cmd;
5469 unsigned long flags;
5470
5471 if (unlikely(tgt->tgt_stop)) {
5472 ql_dbg(ql_dbg_io, vha, 0x300a,
5473 "New command while device %p is shutting down\n", tgt);
5474 return;
5475 }
5476
5477 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5478 vha->hw->tgt.num_qfull_cmds_dropped++;
5479 if (vha->hw->tgt.num_qfull_cmds_dropped >
5480 vha->qla_stats.stat_max_qfull_cmds_dropped)
5481 vha->qla_stats.stat_max_qfull_cmds_dropped =
5482 vha->hw->tgt.num_qfull_cmds_dropped;
5483
5484 ql_dbg(ql_dbg_io, vha, 0x3068,
5485 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5486 vha->vp_idx, __func__,
5487 vha->hw->tgt.num_qfull_cmds_dropped);
5488
5489 qlt_chk_exch_leak_thresh_hold(vha);
5490 return;
5491 }
5492
5493 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5494 (vha, atio->u.isp24.fcp_hdr.s_id);
5495 if (!sess)
5496 return;
5497
5498 cmd = ha->tgt.tgt_ops->get_cmd(sess);
5499 if (!cmd) {
5500 ql_dbg(ql_dbg_io, vha, 0x3009,
5501 "qla_target(%d): %s: Allocation of cmd failed\n",
5502 vha->vp_idx, __func__);
5503
5504 vha->hw->tgt.num_qfull_cmds_dropped++;
5505 if (vha->hw->tgt.num_qfull_cmds_dropped >
5506 vha->qla_stats.stat_max_qfull_cmds_dropped)
5507 vha->qla_stats.stat_max_qfull_cmds_dropped =
5508 vha->hw->tgt.num_qfull_cmds_dropped;
5509
5510 qlt_chk_exch_leak_thresh_hold(vha);
5511 return;
5512 }
5513
5514 qlt_incr_num_pend_cmds(vha);
5515 INIT_LIST_HEAD(&cmd->cmd_list);
5516 memcpy(&cmd->atio, atio, sizeof(*atio));
5517
5518 cmd->tgt = vha->vha_tgt.qla_tgt;
5519 cmd->vha = vha;
5520 cmd->reset_count = ha->base_qpair->chip_reset;
5521 cmd->q_full = 1;
5522 cmd->qpair = ha->base_qpair;
5523
5524 if (qfull) {
5525 cmd->q_full = 1;
5526 /* NOTE: borrowing the state field to carry the status */
5527 cmd->state = status;
5528 } else
5529 cmd->term_exchg = 1;
5530
5531 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5532 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5533
5534 vha->hw->tgt.num_qfull_cmds_alloc++;
5535 if (vha->hw->tgt.num_qfull_cmds_alloc >
5536 vha->qla_stats.stat_max_qfull_cmds_alloc)
5537 vha->qla_stats.stat_max_qfull_cmds_alloc =
5538 vha->hw->tgt.num_qfull_cmds_alloc;
5539 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5540 }
5541
5542 int
5543 qlt_free_qfull_cmds(struct qla_qpair *qpair)
5544 {
5545 struct scsi_qla_host *vha = qpair->vha;
5546 struct qla_hw_data *ha = vha->hw;
5547 unsigned long flags;
5548 struct qla_tgt_cmd *cmd, *tcmd;
5549 struct list_head free_list, q_full_list;
5550 int rc = 0;
5551
5552 if (list_empty(&ha->tgt.q_full_list))
5553 return 0;
5554
5555 INIT_LIST_HEAD(&free_list);
5556 INIT_LIST_HEAD(&q_full_list);
5557
5558 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5559 if (list_empty(&ha->tgt.q_full_list)) {
5560 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5561 return 0;
5562 }
5563
5564 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5565 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5566
5567 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5568 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
5569 if (cmd->q_full)
5570 /* cmd->state is a borrowed field to hold status */
5571 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
5572 else if (cmd->term_exchg)
5573 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
5574
5575 if (rc == -ENOMEM)
5576 break;
5577
5578 if (cmd->q_full)
5579 ql_dbg(ql_dbg_io, vha, 0x3006,
5580 "%s: busy sent for ox_id[%04x]\n", __func__,
5581 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5582 else if (cmd->term_exchg)
5583 ql_dbg(ql_dbg_io, vha, 0x3007,
5584 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5585 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5586 else
5587 ql_dbg(ql_dbg_io, vha, 0x3008,
5588 "%s: Unexpected cmd in QFull list %p\n", __func__,
5589 cmd);
5590
5591 list_move_tail(&cmd->cmd_list, &free_list);
5592
5593 /* piggy back on hardware_lock for protection */
5594 vha->hw->tgt.num_qfull_cmds_alloc--;
5595 }
5596 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
5597
5598 cmd = NULL;
5599
5600 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5601 list_del(&cmd->cmd_list);
5602 /* This cmd was never sent to TCM. There is no need
5603 * to schedule free or call free_cmd
5604 */
5605 qlt_free_cmd(cmd);
5606 }
5607
5608 if (!list_empty(&q_full_list)) {
5609 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5610 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5611 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5612 }
5613
5614 return rc;
5615 }
5616
5617 static void
5618 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5619 uint16_t status)
5620 {
5621 int rc = 0;
5622 struct scsi_qla_host *vha = qpair->vha;
5623
5624 rc = __qlt_send_busy(qpair, atio, status);
5625 if (rc == -ENOMEM)
5626 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5627 }
5628
5629 static int
5630 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5631 struct atio_from_isp *atio, uint8_t ha_locked)
5632 {
5633 struct qla_hw_data *ha = vha->hw;
5634 unsigned long flags;
5635
5636 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5637 return 0;
5638
5639 if (!ha_locked)
5640 spin_lock_irqsave(&ha->hardware_lock, flags);
5641 qlt_send_busy(qpair, atio, qla_sam_status);
5642 if (!ha_locked)
5643 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5644
5645 return 1;
5646 }
5647
5648 /* ha->hardware_lock supposed to be held on entry */
5649 /* called via callback from qla2xxx */
5650 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5651 struct atio_from_isp *atio, uint8_t ha_locked)
5652 {
5653 struct qla_hw_data *ha = vha->hw;
5654 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5655 int rc;
5656 unsigned long flags = 0;
5657
5658 if (unlikely(tgt == NULL)) {
5659 ql_dbg(ql_dbg_tgt, vha, 0x3064,
5660 "ATIO pkt, but no tgt (ha %p)", ha);
5661 return;
5662 }
5663 /*
5664 * In tgt_stop mode we also should allow all requests to pass.
5665 * Otherwise, some commands can stuck.
5666 */
5667
5668 tgt->atio_irq_cmd_count++;
5669
5670 switch (atio->u.raw.entry_type) {
5671 case ATIO_TYPE7:
5672 if (unlikely(atio->u.isp24.exchange_addr ==
5673 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) {
5674 ql_dbg(ql_dbg_io, vha, 0x3065,
5675 "qla_target(%d): ATIO_TYPE7 "
5676 "received with UNKNOWN exchange address, "
5677 "sending QUEUE_FULL\n", vha->vp_idx);
5678 if (!ha_locked)
5679 spin_lock_irqsave(&ha->hardware_lock, flags);
5680 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
5681 if (!ha_locked)
5682 spin_unlock_irqrestore(&ha->hardware_lock,
5683 flags);
5684 break;
5685 }
5686
5687 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5688 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5689 atio, ha_locked);
5690 if (rc != 0) {
5691 tgt->atio_irq_cmd_count--;
5692 return;
5693 }
5694 rc = qlt_handle_cmd_for_atio(vha, atio);
5695 } else {
5696 rc = qlt_handle_task_mgmt(vha, atio);
5697 }
5698 if (unlikely(rc != 0)) {
5699 if (!ha_locked)
5700 spin_lock_irqsave(&ha->hardware_lock, flags);
5701 switch (rc) {
5702 case -ENODEV:
5703 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5704 "qla_target: Unable to send command to target\n");
5705 break;
5706 case -EBADF:
5707 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5708 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5709 qlt_send_term_exchange(ha->base_qpair, NULL,
5710 atio, 1, 0);
5711 break;
5712 case -EBUSY:
5713 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5714 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5715 vha->vp_idx);
5716 qlt_send_busy(ha->base_qpair, atio,
5717 tc_sam_status);
5718 break;
5719 default:
5720 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5721 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5722 vha->vp_idx);
5723 qlt_send_busy(ha->base_qpair, atio,
5724 qla_sam_status);
5725 break;
5726 }
5727 if (!ha_locked)
5728 spin_unlock_irqrestore(&ha->hardware_lock,
5729 flags);
5730 }
5731 break;
5732
5733 case IMMED_NOTIFY_TYPE:
5734 {
5735 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5736 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5737 "qla_target(%d): Received ATIO packet %x "
5738 "with error status %x\n", vha->vp_idx,
5739 atio->u.raw.entry_type,
5740 atio->u.isp2x.entry_status);
5741 break;
5742 }
5743 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5744
5745 if (!ha_locked)
5746 spin_lock_irqsave(&ha->hardware_lock, flags);
5747 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5748 if (!ha_locked)
5749 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5750 break;
5751 }
5752
5753 default:
5754 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5755 "qla_target(%d): Received unknown ATIO atio "
5756 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5757 break;
5758 }
5759
5760 tgt->atio_irq_cmd_count--;
5761 }
5762
5763 /*
5764 * qpair lock is assume to be held
5765 * rc = 0 : send terminate & abts respond
5766 * rc != 0: do not send term & abts respond
5767 */
5768 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha,
5769 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry)
5770 {
5771 struct qla_hw_data *ha = vha->hw;
5772 int rc = 0;
5773
5774 /*
5775 * Detect unresolved exchange. If the same ABTS is unable
5776 * to terminate an existing command and the same ABTS loops
5777 * between FW & Driver, then force FW dump. Under 1 jiff,
5778 * we should see multiple loops.
5779 */
5780 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort &&
5781 qpair->retry_term_jiff == jiffies) {
5782 /* found existing exchange */
5783 qpair->retry_term_cnt++;
5784 if (qpair->retry_term_cnt >= 5) {
5785 rc = -EIO;
5786 qpair->retry_term_cnt = 0;
5787 ql_log(ql_log_warn, vha, 0xffff,
5788 "Unable to send ABTS Respond. Dumping firmware.\n");
5789 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer,
5790 vha, 0xffff, (uint8_t *)entry, sizeof(*entry));
5791
5792 if (qpair == ha->base_qpair)
5793 ha->isp_ops->fw_dump(vha);
5794 else
5795 qla2xxx_dump_fw(vha);
5796
5797 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5798 qla2xxx_wake_dpc(vha);
5799 }
5800 } else if (qpair->retry_term_jiff != jiffies) {
5801 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort;
5802 qpair->retry_term_cnt = 0;
5803 qpair->retry_term_jiff = jiffies;
5804 }
5805
5806 return rc;
5807 }
5808
5809
5810 static void qlt_handle_abts_completion(struct scsi_qla_host *vha,
5811 struct rsp_que *rsp, response_t *pkt)
5812 {
5813 struct abts_resp_from_24xx_fw *entry =
5814 (struct abts_resp_from_24xx_fw *)pkt;
5815 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK;
5816 struct qla_tgt_mgmt_cmd *mcmd;
5817 struct qla_hw_data *ha = vha->hw;
5818
5819 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt);
5820 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) {
5821 ql_dbg(ql_dbg_async, vha, 0xe064,
5822 "qla_target(%d): ABTS Comp without mcmd\n",
5823 vha->vp_idx);
5824 return;
5825 }
5826
5827 if (mcmd)
5828 vha = mcmd->vha;
5829 vha->vha_tgt.qla_tgt->abts_resp_expected--;
5830
5831 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5832 "ABTS_RESP_24XX: compl_status %x\n",
5833 entry->compl_status);
5834
5835 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) {
5836 if (le32_to_cpu(entry->error_subcode1) == 0x1E &&
5837 le32_to_cpu(entry->error_subcode2) == 0) {
5838 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) {
5839 ha->tgt.tgt_ops->free_mcmd(mcmd);
5840 return;
5841 }
5842 qlt_24xx_retry_term_exchange(vha, rsp->qpair,
5843 pkt, mcmd);
5844 } else {
5845 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5846 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)",
5847 vha->vp_idx, entry->compl_status,
5848 entry->error_subcode1,
5849 entry->error_subcode2);
5850 ha->tgt.tgt_ops->free_mcmd(mcmd);
5851 }
5852 } else if (mcmd) {
5853 ha->tgt.tgt_ops->free_mcmd(mcmd);
5854 }
5855 }
5856
5857 /* ha->hardware_lock supposed to be held on entry */
5858 /* called via callback from qla2xxx */
5859 static void qlt_response_pkt(struct scsi_qla_host *vha,
5860 struct rsp_que *rsp, response_t *pkt)
5861 {
5862 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5863
5864 if (unlikely(tgt == NULL)) {
5865 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5866 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5867 vha->vp_idx, pkt->entry_type, vha->hw);
5868 return;
5869 }
5870
5871 /*
5872 * In tgt_stop mode we also should allow all requests to pass.
5873 * Otherwise, some commands can stuck.
5874 */
5875
5876 switch (pkt->entry_type) {
5877 case CTIO_CRC2:
5878 case CTIO_TYPE7:
5879 {
5880 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5881
5882 qlt_do_ctio_completion(vha, rsp, entry->handle,
5883 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5884 entry);
5885 break;
5886 }
5887
5888 case ACCEPT_TGT_IO_TYPE:
5889 {
5890 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5891 int rc;
5892
5893 if (atio->u.isp2x.status !=
5894 cpu_to_le16(ATIO_CDB_VALID)) {
5895 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5896 "qla_target(%d): ATIO with error "
5897 "status %x received\n", vha->vp_idx,
5898 le16_to_cpu(atio->u.isp2x.status));
5899 break;
5900 }
5901
5902 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
5903 if (rc != 0)
5904 return;
5905
5906 rc = qlt_handle_cmd_for_atio(vha, atio);
5907 if (unlikely(rc != 0)) {
5908 switch (rc) {
5909 case -ENODEV:
5910 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5911 "qla_target: Unable to send command to target\n");
5912 break;
5913 case -EBADF:
5914 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5915 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5916 qlt_send_term_exchange(rsp->qpair, NULL,
5917 atio, 1, 0);
5918 break;
5919 case -EBUSY:
5920 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5921 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5922 vha->vp_idx);
5923 qlt_send_busy(rsp->qpair, atio,
5924 tc_sam_status);
5925 break;
5926 default:
5927 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5928 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5929 vha->vp_idx);
5930 qlt_send_busy(rsp->qpair, atio,
5931 qla_sam_status);
5932 break;
5933 }
5934 }
5935 }
5936 break;
5937
5938 case CONTINUE_TGT_IO_TYPE:
5939 {
5940 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5941
5942 qlt_do_ctio_completion(vha, rsp, entry->handle,
5943 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5944 entry);
5945 break;
5946 }
5947
5948 case CTIO_A64_TYPE:
5949 {
5950 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5951
5952 qlt_do_ctio_completion(vha, rsp, entry->handle,
5953 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5954 entry);
5955 break;
5956 }
5957
5958 case IMMED_NOTIFY_TYPE:
5959 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5960 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5961 break;
5962
5963 case NOTIFY_ACK_TYPE:
5964 if (tgt->notify_ack_expected > 0) {
5965 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5966
5967 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5968 "NOTIFY_ACK seq %08x status %x\n",
5969 le16_to_cpu(entry->u.isp2x.seq_id),
5970 le16_to_cpu(entry->u.isp2x.status));
5971 tgt->notify_ack_expected--;
5972 if (entry->u.isp2x.status !=
5973 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5974 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5975 "qla_target(%d): NOTIFY_ACK "
5976 "failed %x\n", vha->vp_idx,
5977 le16_to_cpu(entry->u.isp2x.status));
5978 }
5979 } else {
5980 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5981 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5982 vha->vp_idx);
5983 }
5984 break;
5985
5986 case ABTS_RECV_24XX:
5987 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5988 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5989 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5990 break;
5991
5992 case ABTS_RESP_24XX:
5993 if (tgt->abts_resp_expected > 0) {
5994 qlt_handle_abts_completion(vha, rsp, pkt);
5995 } else {
5996 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5997 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5998 "received\n", vha->vp_idx);
5999 }
6000 break;
6001
6002 default:
6003 ql_dbg(ql_dbg_tgt, vha, 0xe065,
6004 "qla_target(%d): Received unknown response pkt "
6005 "type %x\n", vha->vp_idx, pkt->entry_type);
6006 break;
6007 }
6008
6009 }
6010
6011 /*
6012 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
6013 */
6014 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
6015 uint16_t *mailbox)
6016 {
6017 struct qla_hw_data *ha = vha->hw;
6018 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6019 int login_code;
6020
6021 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
6022 return;
6023
6024 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
6025 IS_QLA2100(ha))
6026 return;
6027 /*
6028 * In tgt_stop mode we also should allow all requests to pass.
6029 * Otherwise, some commands can stuck.
6030 */
6031
6032
6033 switch (code) {
6034 case MBA_RESET: /* Reset */
6035 case MBA_SYSTEM_ERR: /* System Error */
6036 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
6037 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
6038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
6039 "qla_target(%d): System error async event %#x "
6040 "occurred", vha->vp_idx, code);
6041 break;
6042 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
6043 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6044 break;
6045
6046 case MBA_LOOP_UP:
6047 {
6048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6049 "qla_target(%d): Async LOOP_UP occurred "
6050 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
6051 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
6052 if (tgt->link_reinit_iocb_pending) {
6053 qlt_send_notify_ack(ha->base_qpair,
6054 &tgt->link_reinit_iocb,
6055 0, 0, 0, 0, 0, 0);
6056 tgt->link_reinit_iocb_pending = 0;
6057 }
6058 break;
6059 }
6060
6061 case MBA_LIP_OCCURRED:
6062 case MBA_LOOP_DOWN:
6063 case MBA_LIP_RESET:
6064 case MBA_RSCN_UPDATE:
6065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6066 "qla_target(%d): Async event %#x occurred "
6067 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
6068 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
6069 break;
6070
6071 case MBA_REJECTED_FCP_CMD:
6072 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
6073 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
6074 vha->vp_idx,
6075 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
6076
6077 if (mailbox[3] == 1) {
6078 /* exchange starvation. */
6079 vha->hw->exch_starvation++;
6080 if (vha->hw->exch_starvation > 5) {
6081 ql_log(ql_log_warn, vha, 0xd03a,
6082 "Exchange starvation-. Resetting RISC\n");
6083
6084 vha->hw->exch_starvation = 0;
6085 if (IS_P3P_TYPE(vha->hw))
6086 set_bit(FCOE_CTX_RESET_NEEDED,
6087 &vha->dpc_flags);
6088 else
6089 set_bit(ISP_ABORT_NEEDED,
6090 &vha->dpc_flags);
6091 qla2xxx_wake_dpc(vha);
6092 }
6093 }
6094 break;
6095
6096 case MBA_PORT_UPDATE:
6097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
6098 "qla_target(%d): Port update async event %#x "
6099 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
6100 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
6101 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
6102
6103 login_code = mailbox[2];
6104 if (login_code == 0x4) {
6105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
6106 "Async MB 2: Got PLOGI Complete\n");
6107 vha->hw->exch_starvation = 0;
6108 } else if (login_code == 0x7)
6109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
6110 "Async MB 2: Port Logged Out\n");
6111 break;
6112 default:
6113 break;
6114 }
6115
6116 }
6117
6118 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
6119 uint16_t loop_id)
6120 {
6121 fc_port_t *fcport, *tfcp, *del;
6122 int rc;
6123 unsigned long flags;
6124 u8 newfcport = 0;
6125
6126 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
6127 if (!fcport) {
6128 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
6129 "qla_target(%d): Allocation of tmp FC port failed",
6130 vha->vp_idx);
6131 return NULL;
6132 }
6133
6134 fcport->loop_id = loop_id;
6135
6136 rc = qla24xx_gpdb_wait(vha, fcport, 0);
6137 if (rc != QLA_SUCCESS) {
6138 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
6139 "qla_target(%d): Failed to retrieve fcport "
6140 "information -- get_port_database() returned %x "
6141 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
6142 kfree(fcport);
6143 return NULL;
6144 }
6145
6146 del = NULL;
6147 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
6148 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
6149
6150 if (tfcp) {
6151 tfcp->d_id = fcport->d_id;
6152 tfcp->port_type = fcport->port_type;
6153 tfcp->supported_classes = fcport->supported_classes;
6154 tfcp->flags |= fcport->flags;
6155 tfcp->scan_state = QLA_FCPORT_FOUND;
6156
6157 del = fcport;
6158 fcport = tfcp;
6159 } else {
6160 if (vha->hw->current_topology == ISP_CFG_F)
6161 fcport->flags |= FCF_FABRIC_DEVICE;
6162
6163 list_add_tail(&fcport->list, &vha->vp_fcports);
6164 if (!IS_SW_RESV_ADDR(fcport->d_id))
6165 vha->fcport_count++;
6166 fcport->login_gen++;
6167 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE);
6168 fcport->login_succ = 1;
6169 newfcport = 1;
6170 }
6171
6172 fcport->deleted = 0;
6173 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
6174
6175 switch (vha->host->active_mode) {
6176 case MODE_INITIATOR:
6177 case MODE_DUAL:
6178 if (newfcport) {
6179 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
6180 qla24xx_sched_upd_fcport(fcport);
6181 } else {
6182 ql_dbg(ql_dbg_disc, vha, 0x20ff,
6183 "%s %d %8phC post gpsc fcp_cnt %d\n",
6184 __func__, __LINE__, fcport->port_name, vha->fcport_count);
6185 qla24xx_post_gpsc_work(vha, fcport);
6186 }
6187 }
6188 break;
6189
6190 case MODE_TARGET:
6191 default:
6192 break;
6193 }
6194 if (del)
6195 qla2x00_free_fcport(del);
6196
6197 return fcport;
6198 }
6199
6200 /* Must be called under tgt_mutex */
6201 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
6202 be_id_t s_id)
6203 {
6204 struct fc_port *sess = NULL;
6205 fc_port_t *fcport = NULL;
6206 int rc, global_resets;
6207 uint16_t loop_id = 0;
6208
6209 if (s_id.domain == 0xFF && s_id.area == 0xFC) {
6210 /*
6211 * This is Domain Controller, so it should be
6212 * OK to drop SCSI commands from it.
6213 */
6214 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
6215 "Unable to find initiator with S_ID %x:%x:%x",
6216 s_id.domain, s_id.area, s_id.al_pa);
6217 return NULL;
6218 }
6219
6220 mutex_lock(&vha->vha_tgt.tgt_mutex);
6221
6222 retry:
6223 global_resets =
6224 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
6225
6226 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
6227 if (rc != 0) {
6228 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6229
6230 ql_log(ql_log_info, vha, 0xf071,
6231 "qla_target(%d): Unable to find "
6232 "initiator with S_ID %x:%x:%x",
6233 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa);
6234
6235 if (rc == -ENOENT) {
6236 qlt_port_logo_t logo;
6237
6238 logo.id = be_to_port_id(s_id);
6239 logo.cmd_count = 1;
6240 qlt_send_first_logo(vha, &logo);
6241 }
6242
6243 return NULL;
6244 }
6245
6246 fcport = qlt_get_port_database(vha, loop_id);
6247 if (!fcport) {
6248 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6249 return NULL;
6250 }
6251
6252 if (global_resets !=
6253 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
6254 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
6255 "qla_target(%d): global reset during session discovery "
6256 "(counter was %d, new %d), retrying", vha->vp_idx,
6257 global_resets,
6258 atomic_read(&vha->vha_tgt.
6259 qla_tgt->tgt_global_resets_count));
6260 goto retry;
6261 }
6262
6263 sess = qlt_create_sess(vha, fcport, true);
6264
6265 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6266
6267 return sess;
6268 }
6269
6270 static void qlt_abort_work(struct qla_tgt *tgt,
6271 struct qla_tgt_sess_work_param *prm)
6272 {
6273 struct scsi_qla_host *vha = tgt->vha;
6274 struct qla_hw_data *ha = vha->hw;
6275 struct fc_port *sess = NULL;
6276 unsigned long flags = 0, flags2 = 0;
6277 be_id_t s_id;
6278 int rc;
6279
6280 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6281
6282 if (tgt->tgt_stop)
6283 goto out_term2;
6284
6285 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id);
6286
6287 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6288 if (!sess) {
6289 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6290
6291 sess = qlt_make_local_sess(vha, s_id);
6292 /* sess has got an extra creation ref */
6293
6294 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6295 if (!sess)
6296 goto out_term2;
6297 } else {
6298 if (sess->deleted) {
6299 sess = NULL;
6300 goto out_term2;
6301 }
6302
6303 if (!kref_get_unless_zero(&sess->sess_kref)) {
6304 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
6305 "%s: kref_get fail %8phC \n",
6306 __func__, sess->port_name);
6307 sess = NULL;
6308 goto out_term2;
6309 }
6310 }
6311
6312 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
6313 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6314
6315 ha->tgt.tgt_ops->put_sess(sess);
6316
6317 if (rc != 0)
6318 goto out_term;
6319 return;
6320
6321 out_term2:
6322 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6323
6324 out_term:
6325 spin_lock_irqsave(&ha->hardware_lock, flags);
6326 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6327 FCP_TMF_REJECTED, false);
6328 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6329 }
6330
6331 static void qlt_sess_work_fn(struct work_struct *work)
6332 {
6333 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6334 struct scsi_qla_host *vha = tgt->vha;
6335 unsigned long flags;
6336
6337 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6338
6339 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6340 while (!list_empty(&tgt->sess_works_list)) {
6341 struct qla_tgt_sess_work_param *prm = list_entry(
6342 tgt->sess_works_list.next, typeof(*prm),
6343 sess_works_list_entry);
6344
6345 /*
6346 * This work can be scheduled on several CPUs at time, so we
6347 * must delete the entry to eliminate double processing
6348 */
6349 list_del(&prm->sess_works_list_entry);
6350
6351 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6352
6353 switch (prm->type) {
6354 case QLA_TGT_SESS_WORK_ABORT:
6355 qlt_abort_work(tgt, prm);
6356 break;
6357 default:
6358 BUG_ON(1);
6359 break;
6360 }
6361
6362 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6363
6364 kfree(prm);
6365 }
6366 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6367 }
6368
6369 /* Must be called under tgt_host_action_mutex */
6370 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6371 {
6372 struct qla_tgt *tgt;
6373 int rc, i;
6374 struct qla_qpair_hint *h;
6375
6376 if (!QLA_TGT_MODE_ENABLED())
6377 return 0;
6378
6379 if (!IS_TGT_MODE_CAPABLE(ha)) {
6380 ql_log(ql_log_warn, base_vha, 0xe070,
6381 "This adapter does not support target mode.\n");
6382 return 0;
6383 }
6384
6385 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
6386 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
6387
6388 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
6389
6390 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6391 if (!tgt) {
6392 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6393 "Unable to allocate struct qla_tgt\n");
6394 return -ENOMEM;
6395 }
6396
6397 tgt->qphints = kcalloc(ha->max_qpairs + 1,
6398 sizeof(struct qla_qpair_hint),
6399 GFP_KERNEL);
6400 if (!tgt->qphints) {
6401 kfree(tgt);
6402 ql_log(ql_log_warn, base_vha, 0x0197,
6403 "Unable to allocate qpair hints.\n");
6404 return -ENOMEM;
6405 }
6406
6407 qla2xxx_driver_template.supported_mode |= MODE_TARGET;
6408
6409 rc = btree_init64(&tgt->lun_qpair_map);
6410 if (rc) {
6411 kfree(tgt->qphints);
6412 kfree(tgt);
6413 ql_log(ql_log_info, base_vha, 0x0198,
6414 "Unable to initialize lun_qpair_map btree\n");
6415 return -EIO;
6416 }
6417 h = &tgt->qphints[0];
6418 h->qpair = ha->base_qpair;
6419 INIT_LIST_HEAD(&h->hint_elem);
6420 h->cpuid = ha->base_qpair->cpuid;
6421 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6422
6423 for (i = 0; i < ha->max_qpairs; i++) {
6424 unsigned long flags;
6425
6426 struct qla_qpair *qpair = ha->queue_pair_map[i];
6427
6428 h = &tgt->qphints[i + 1];
6429 INIT_LIST_HEAD(&h->hint_elem);
6430 if (qpair) {
6431 h->qpair = qpair;
6432 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6433 list_add_tail(&h->hint_elem, &qpair->hints_list);
6434 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6435 h->cpuid = qpair->cpuid;
6436 }
6437 }
6438
6439 tgt->ha = ha;
6440 tgt->vha = base_vha;
6441 init_waitqueue_head(&tgt->waitQ);
6442 spin_lock_init(&tgt->sess_work_lock);
6443 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6444 INIT_LIST_HEAD(&tgt->sess_works_list);
6445 atomic_set(&tgt->tgt_global_resets_count, 0);
6446
6447 base_vha->vha_tgt.qla_tgt = tgt;
6448
6449 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6450 "qla_target(%d): using 64 Bit PCI addressing",
6451 base_vha->vp_idx);
6452 /* 3 is reserved */
6453 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6454
6455 mutex_lock(&qla_tgt_mutex);
6456 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6457 mutex_unlock(&qla_tgt_mutex);
6458
6459 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6460 ha->tgt.tgt_ops->add_target(base_vha);
6461
6462 return 0;
6463 }
6464
6465 /* Must be called under tgt_host_action_mutex */
6466 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6467 {
6468 if (!vha->vha_tgt.qla_tgt)
6469 return 0;
6470
6471 if (vha->fc_vport) {
6472 qlt_release(vha->vha_tgt.qla_tgt);
6473 return 0;
6474 }
6475
6476 /* free left over qfull cmds */
6477 qlt_init_term_exchange(vha);
6478
6479 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6480 vha->host_no, ha);
6481 qlt_release(vha->vha_tgt.qla_tgt);
6482
6483 return 0;
6484 }
6485
6486 void qla_remove_hostmap(struct qla_hw_data *ha)
6487 {
6488 struct scsi_qla_host *node;
6489 u32 key = 0;
6490
6491 btree_for_each_safe32(&ha->host_map, key, node)
6492 btree_remove32(&ha->host_map, key);
6493
6494 btree_destroy32(&ha->host_map);
6495 }
6496
6497 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6498 unsigned char *b)
6499 {
6500 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name);
6501 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name);
6502 put_unaligned_be64(wwpn, b);
6503 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b);
6504 }
6505
6506 /**
6507 * qlt_lport_register - register lport with external module
6508 *
6509 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6510 * @phys_wwpn: physical port WWPN
6511 * @npiv_wwpn: NPIV WWPN
6512 * @npiv_wwnn: NPIV WWNN
6513 * @callback: lport initialization callback for tcm_qla2xxx code
6514 */
6515 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6516 u64 npiv_wwpn, u64 npiv_wwnn,
6517 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6518 {
6519 struct qla_tgt *tgt;
6520 struct scsi_qla_host *vha;
6521 struct qla_hw_data *ha;
6522 struct Scsi_Host *host;
6523 unsigned long flags;
6524 int rc;
6525 u8 b[WWN_SIZE];
6526
6527 mutex_lock(&qla_tgt_mutex);
6528 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6529 vha = tgt->vha;
6530 ha = vha->hw;
6531
6532 host = vha->host;
6533 if (!host)
6534 continue;
6535
6536 if (!(host->hostt->supported_mode & MODE_TARGET))
6537 continue;
6538
6539 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6540 continue;
6541
6542 spin_lock_irqsave(&ha->hardware_lock, flags);
6543 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6544 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6545 host->host_no);
6546 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6547 continue;
6548 }
6549 if (tgt->tgt_stop) {
6550 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6551 host->host_no);
6552 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6553 continue;
6554 }
6555 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6556
6557 if (!scsi_host_get(host)) {
6558 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6559 "Unable to scsi_host_get() for"
6560 " qla2xxx scsi_host\n");
6561 continue;
6562 }
6563 qlt_lport_dump(vha, phys_wwpn, b);
6564
6565 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6566 scsi_host_put(host);
6567 continue;
6568 }
6569 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6570 if (rc != 0)
6571 scsi_host_put(host);
6572
6573 mutex_unlock(&qla_tgt_mutex);
6574 return rc;
6575 }
6576 mutex_unlock(&qla_tgt_mutex);
6577
6578 return -ENODEV;
6579 }
6580 EXPORT_SYMBOL(qlt_lport_register);
6581
6582 /**
6583 * qlt_lport_deregister - Degister lport
6584 *
6585 * @vha: Registered scsi_qla_host pointer
6586 */
6587 void qlt_lport_deregister(struct scsi_qla_host *vha)
6588 {
6589 struct qla_hw_data *ha = vha->hw;
6590 struct Scsi_Host *sh = vha->host;
6591 /*
6592 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6593 */
6594 vha->vha_tgt.target_lport_ptr = NULL;
6595 ha->tgt.tgt_ops = NULL;
6596 /*
6597 * Release the Scsi_Host reference for the underlying qla2xxx host
6598 */
6599 scsi_host_put(sh);
6600 }
6601 EXPORT_SYMBOL(qlt_lport_deregister);
6602
6603 /* Must be called under HW lock */
6604 void qlt_set_mode(struct scsi_qla_host *vha)
6605 {
6606 switch (vha->qlini_mode) {
6607 case QLA2XXX_INI_MODE_DISABLED:
6608 case QLA2XXX_INI_MODE_EXCLUSIVE:
6609 vha->host->active_mode = MODE_TARGET;
6610 break;
6611 case QLA2XXX_INI_MODE_ENABLED:
6612 vha->host->active_mode = MODE_INITIATOR;
6613 break;
6614 case QLA2XXX_INI_MODE_DUAL:
6615 vha->host->active_mode = MODE_DUAL;
6616 break;
6617 default:
6618 break;
6619 }
6620 }
6621
6622 /* Must be called under HW lock */
6623 static void qlt_clear_mode(struct scsi_qla_host *vha)
6624 {
6625 switch (vha->qlini_mode) {
6626 case QLA2XXX_INI_MODE_DISABLED:
6627 vha->host->active_mode = MODE_UNKNOWN;
6628 break;
6629 case QLA2XXX_INI_MODE_EXCLUSIVE:
6630 vha->host->active_mode = MODE_INITIATOR;
6631 break;
6632 case QLA2XXX_INI_MODE_ENABLED:
6633 case QLA2XXX_INI_MODE_DUAL:
6634 vha->host->active_mode = MODE_INITIATOR;
6635 break;
6636 default:
6637 break;
6638 }
6639 }
6640
6641 /*
6642 * qla_tgt_enable_vha - NO LOCK HELD
6643 *
6644 * host_reset, bring up w/ Target Mode Enabled
6645 */
6646 void
6647 qlt_enable_vha(struct scsi_qla_host *vha)
6648 {
6649 struct qla_hw_data *ha = vha->hw;
6650 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6651 unsigned long flags;
6652 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6653
6654 if (!tgt) {
6655 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6656 "Unable to locate qla_tgt pointer from"
6657 " struct qla_hw_data\n");
6658 dump_stack();
6659 return;
6660 }
6661 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6662 return;
6663
6664 if (ha->tgt.num_act_qpairs > ha->max_qpairs)
6665 ha->tgt.num_act_qpairs = ha->max_qpairs;
6666 spin_lock_irqsave(&ha->hardware_lock, flags);
6667 tgt->tgt_stopped = 0;
6668 qlt_set_mode(vha);
6669 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6670
6671 mutex_lock(&ha->optrom_mutex);
6672 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
6673 "%s.\n", __func__);
6674 if (vha->vp_idx) {
6675 qla24xx_disable_vp(vha);
6676 qla24xx_enable_vp(vha);
6677 } else {
6678 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6679 qla2xxx_wake_dpc(base_vha);
6680 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) !=
6681 QLA_SUCCESS);
6682 }
6683 mutex_unlock(&ha->optrom_mutex);
6684 }
6685 EXPORT_SYMBOL(qlt_enable_vha);
6686
6687 /*
6688 * qla_tgt_disable_vha - NO LOCK HELD
6689 *
6690 * Disable Target Mode and reset the adapter
6691 */
6692 static void qlt_disable_vha(struct scsi_qla_host *vha)
6693 {
6694 struct qla_hw_data *ha = vha->hw;
6695 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6696 unsigned long flags;
6697
6698 if (!tgt) {
6699 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6700 "Unable to locate qla_tgt pointer from"
6701 " struct qla_hw_data\n");
6702 dump_stack();
6703 return;
6704 }
6705
6706 spin_lock_irqsave(&ha->hardware_lock, flags);
6707 qlt_clear_mode(vha);
6708 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6709
6710 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6711 qla2xxx_wake_dpc(vha);
6712
6713 /*
6714 * We are expecting the offline state.
6715 * QLA_FUNCTION_FAILED means that adapter is offline.
6716 */
6717 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
6718 ql_dbg(ql_dbg_tgt, vha, 0xe081,
6719 "adapter is offline\n");
6720 }
6721
6722 /*
6723 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6724 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6725 * members.
6726 */
6727 void
6728 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6729 {
6730 vha->vha_tgt.qla_tgt = NULL;
6731
6732 mutex_init(&vha->vha_tgt.tgt_mutex);
6733 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6734
6735 INIT_LIST_HEAD(&vha->unknown_atio_list);
6736 INIT_DELAYED_WORK(&vha->unknown_atio_work, qlt_unknown_atio_work_fn);
6737
6738 qlt_clear_mode(vha);
6739
6740 /*
6741 * NOTE: Currently the value is kept the same for <24xx and
6742 * >=24xx ISPs. If it is necessary to change it,
6743 * the check should be added for specific ISPs,
6744 * assigning the value appropriately.
6745 */
6746 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6747
6748 qlt_add_target(ha, vha);
6749 }
6750
6751 u8
6752 qlt_rff_id(struct scsi_qla_host *vha)
6753 {
6754 u8 fc4_feature = 0;
6755 /*
6756 * FC-4 Feature bit 0 indicates target functionality to the name server.
6757 */
6758 if (qla_tgt_mode_enabled(vha)) {
6759 fc4_feature = BIT_0;
6760 } else if (qla_ini_mode_enabled(vha)) {
6761 fc4_feature = BIT_1;
6762 } else if (qla_dual_mode_enabled(vha))
6763 fc4_feature = BIT_0 | BIT_1;
6764
6765 return fc4_feature;
6766 }
6767
6768 /*
6769 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6770 * @ha: HA context
6771 *
6772 * Beginning of ATIO ring has initialization control block already built
6773 * by nvram config routine.
6774 *
6775 * Returns 0 on success.
6776 */
6777 void
6778 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6779 {
6780 struct qla_hw_data *ha = vha->hw;
6781 uint16_t cnt;
6782 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6783
6784 if (qla_ini_mode_enabled(vha))
6785 return;
6786
6787 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6788 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
6789 pkt++;
6790 }
6791
6792 }
6793
6794 /*
6795 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6796 * @ha: SCSI driver HA context
6797 */
6798 void
6799 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6800 {
6801 struct qla_hw_data *ha = vha->hw;
6802 struct atio_from_isp *pkt;
6803 int cnt, i;
6804
6805 if (!ha->flags.fw_started)
6806 return;
6807
6808 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6809 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
6810 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6811 cnt = pkt->u.raw.entry_count;
6812
6813 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6814 /*
6815 * This packet is corrupted. The header + payload
6816 * can not be trusted. There is no point in passing
6817 * it further up.
6818 */
6819 ql_log(ql_log_warn, vha, 0xd03c,
6820 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6821 &pkt->u.isp24.fcp_hdr.s_id,
6822 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6823 pkt->u.isp24.exchange_addr, pkt);
6824
6825 adjust_corrupted_atio(pkt);
6826 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6827 ha_locked, 0);
6828 } else {
6829 qlt_24xx_atio_pkt_all_vps(vha,
6830 (struct atio_from_isp *)pkt, ha_locked);
6831 }
6832
6833 for (i = 0; i < cnt; i++) {
6834 ha->tgt.atio_ring_index++;
6835 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6836 ha->tgt.atio_ring_index = 0;
6837 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6838 } else
6839 ha->tgt.atio_ring_ptr++;
6840
6841 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
6842 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6843 }
6844 wmb();
6845 }
6846
6847 /* Adjust ring index */
6848 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6849 }
6850
6851 void
6852 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6853 {
6854 struct qla_hw_data *ha = vha->hw;
6855 struct qla_msix_entry *msix = &ha->msix_entries[2];
6856 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6857
6858 if (!QLA_TGT_MODE_ENABLED())
6859 return;
6860
6861 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0);
6862 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0);
6863 rd_reg_dword(ISP_ATIO_Q_OUT(vha));
6864
6865 if (ha->flags.msix_enabled) {
6866 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
6867 icb->msix_atio = cpu_to_le16(msix->entry);
6868 icb->firmware_options_2 &= cpu_to_le32(~BIT_26);
6869 ql_dbg(ql_dbg_init, vha, 0xf072,
6870 "Registering ICB vector 0x%x for atio que.\n",
6871 msix->entry);
6872 }
6873 } else {
6874 /* INTx|MSI */
6875 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
6876 icb->msix_atio = 0;
6877 icb->firmware_options_2 |= cpu_to_le32(BIT_26);
6878 ql_dbg(ql_dbg_init, vha, 0xf072,
6879 "%s: Use INTx for ATIOQ.\n", __func__);
6880 }
6881 }
6882 }
6883
6884 void
6885 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6886 {
6887 struct qla_hw_data *ha = vha->hw;
6888 u32 tmp;
6889
6890 if (!QLA_TGT_MODE_ENABLED())
6891 return;
6892
6893 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6894 if (!ha->tgt.saved_set) {
6895 /* We save only once */
6896 ha->tgt.saved_exchange_count = nv->exchange_count;
6897 ha->tgt.saved_firmware_options_1 =
6898 nv->firmware_options_1;
6899 ha->tgt.saved_firmware_options_2 =
6900 nv->firmware_options_2;
6901 ha->tgt.saved_firmware_options_3 =
6902 nv->firmware_options_3;
6903 ha->tgt.saved_set = 1;
6904 }
6905
6906 if (qla_tgt_mode_enabled(vha))
6907 nv->exchange_count = cpu_to_le16(0xFFFF);
6908 else /* dual */
6909 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
6910
6911 /* Enable target mode */
6912 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6913
6914 /* Disable ini mode, if requested */
6915 if (qla_tgt_mode_enabled(vha))
6916 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6917
6918 /* Disable Full Login after LIP */
6919 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6920 /* Enable initial LIP */
6921 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6922 if (ql2xtgt_tape_enable)
6923 /* Enable FC Tape support */
6924 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6925 else
6926 /* Disable FC Tape support */
6927 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6928
6929 /* Disable Full Login after LIP */
6930 nv->host_p &= cpu_to_le32(~BIT_10);
6931
6932 /*
6933 * clear BIT 15 explicitly as we have seen at least
6934 * a couple of instances where this was set and this
6935 * was causing the firmware to not be initialized.
6936 */
6937 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6938 /* Enable target PRLI control */
6939 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6940
6941 if (IS_QLA25XX(ha)) {
6942 /* Change Loop-prefer to Pt-Pt */
6943 tmp = ~(BIT_4|BIT_5|BIT_6);
6944 nv->firmware_options_2 &= cpu_to_le32(tmp);
6945 tmp = P2P << 4;
6946 nv->firmware_options_2 |= cpu_to_le32(tmp);
6947 }
6948 } else {
6949 if (ha->tgt.saved_set) {
6950 nv->exchange_count = ha->tgt.saved_exchange_count;
6951 nv->firmware_options_1 =
6952 ha->tgt.saved_firmware_options_1;
6953 nv->firmware_options_2 =
6954 ha->tgt.saved_firmware_options_2;
6955 nv->firmware_options_3 =
6956 ha->tgt.saved_firmware_options_3;
6957 }
6958 return;
6959 }
6960
6961 if (ha->base_qpair->enable_class_2) {
6962 if (vha->flags.init_done)
6963 fc_host_supported_classes(vha->host) =
6964 FC_COS_CLASS2 | FC_COS_CLASS3;
6965
6966 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6967 } else {
6968 if (vha->flags.init_done)
6969 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6970
6971 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6972 }
6973 }
6974
6975 void
6976 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6977 struct init_cb_24xx *icb)
6978 {
6979 struct qla_hw_data *ha = vha->hw;
6980
6981 if (!QLA_TGT_MODE_ENABLED())
6982 return;
6983
6984 if (ha->tgt.node_name_set) {
6985 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6986 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6987 }
6988 }
6989
6990 void
6991 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6992 {
6993 struct qla_hw_data *ha = vha->hw;
6994 u32 tmp;
6995
6996 if (!QLA_TGT_MODE_ENABLED())
6997 return;
6998
6999 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
7000 if (!ha->tgt.saved_set) {
7001 /* We save only once */
7002 ha->tgt.saved_exchange_count = nv->exchange_count;
7003 ha->tgt.saved_firmware_options_1 =
7004 nv->firmware_options_1;
7005 ha->tgt.saved_firmware_options_2 =
7006 nv->firmware_options_2;
7007 ha->tgt.saved_firmware_options_3 =
7008 nv->firmware_options_3;
7009 ha->tgt.saved_set = 1;
7010 }
7011
7012 if (qla_tgt_mode_enabled(vha))
7013 nv->exchange_count = cpu_to_le16(0xFFFF);
7014 else /* dual */
7015 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
7016
7017 /* Enable target mode */
7018 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
7019
7020 /* Disable ini mode, if requested */
7021 if (qla_tgt_mode_enabled(vha))
7022 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
7023 /* Disable Full Login after LIP */
7024 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
7025 /* Enable initial LIP */
7026 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
7027 /*
7028 * clear BIT 15 explicitly as we have seen at
7029 * least a couple of instances where this was set
7030 * and this was causing the firmware to not be
7031 * initialized.
7032 */
7033 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
7034 if (ql2xtgt_tape_enable)
7035 /* Enable FC tape support */
7036 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
7037 else
7038 /* Disable FC tape support */
7039 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
7040
7041 /* Disable Full Login after LIP */
7042 nv->host_p &= cpu_to_le32(~BIT_10);
7043 /* Enable target PRLI control */
7044 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
7045
7046 /* Change Loop-prefer to Pt-Pt */
7047 tmp = ~(BIT_4|BIT_5|BIT_6);
7048 nv->firmware_options_2 &= cpu_to_le32(tmp);
7049 tmp = P2P << 4;
7050 nv->firmware_options_2 |= cpu_to_le32(tmp);
7051 } else {
7052 if (ha->tgt.saved_set) {
7053 nv->exchange_count = ha->tgt.saved_exchange_count;
7054 nv->firmware_options_1 =
7055 ha->tgt.saved_firmware_options_1;
7056 nv->firmware_options_2 =
7057 ha->tgt.saved_firmware_options_2;
7058 nv->firmware_options_3 =
7059 ha->tgt.saved_firmware_options_3;
7060 }
7061 return;
7062 }
7063
7064 if (ha->base_qpair->enable_class_2) {
7065 if (vha->flags.init_done)
7066 fc_host_supported_classes(vha->host) =
7067 FC_COS_CLASS2 | FC_COS_CLASS3;
7068
7069 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
7070 } else {
7071 if (vha->flags.init_done)
7072 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
7073
7074 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
7075 }
7076 }
7077
7078 void
7079 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
7080 struct init_cb_81xx *icb)
7081 {
7082 struct qla_hw_data *ha = vha->hw;
7083
7084 if (!QLA_TGT_MODE_ENABLED())
7085 return;
7086
7087 if (ha->tgt.node_name_set) {
7088 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
7089 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
7090 }
7091 }
7092
7093 void
7094 qlt_83xx_iospace_config(struct qla_hw_data *ha)
7095 {
7096 if (!QLA_TGT_MODE_ENABLED())
7097 return;
7098
7099 ha->msix_count += 1; /* For ATIO Q */
7100 }
7101
7102
7103 void
7104 qlt_modify_vp_config(struct scsi_qla_host *vha,
7105 struct vp_config_entry_24xx *vpmod)
7106 {
7107 /* enable target mode. Bit5 = 1 => disable */
7108 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
7109 vpmod->options_idx1 &= ~BIT_5;
7110
7111 /* Disable ini mode, if requested. bit4 = 1 => disable */
7112 if (qla_tgt_mode_enabled(vha))
7113 vpmod->options_idx1 &= ~BIT_4;
7114 }
7115
7116 void
7117 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
7118 {
7119 mutex_init(&base_vha->vha_tgt.tgt_mutex);
7120 if (!QLA_TGT_MODE_ENABLED())
7121 return;
7122
7123 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
7124 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
7125 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
7126 } else {
7127 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
7128 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
7129 }
7130
7131 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
7132
7133 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
7134 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
7135 qlt_unknown_atio_work_fn);
7136
7137 qlt_clear_mode(base_vha);
7138
7139 qla_update_vp_map(base_vha, SET_VP_IDX);
7140 }
7141
7142 irqreturn_t
7143 qla83xx_msix_atio_q(int irq, void *dev_id)
7144 {
7145 struct rsp_que *rsp;
7146 scsi_qla_host_t *vha;
7147 struct qla_hw_data *ha;
7148 unsigned long flags;
7149
7150 rsp = (struct rsp_que *) dev_id;
7151 ha = rsp->hw;
7152 vha = pci_get_drvdata(ha->pdev);
7153
7154 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7155
7156 qlt_24xx_process_atio_queue(vha, 0);
7157
7158 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7159
7160 return IRQ_HANDLED;
7161 }
7162
7163 static void
7164 qlt_handle_abts_recv_work(struct work_struct *work)
7165 {
7166 struct qla_tgt_sess_op *op = container_of(work,
7167 struct qla_tgt_sess_op, work);
7168 scsi_qla_host_t *vha = op->vha;
7169 struct qla_hw_data *ha = vha->hw;
7170 unsigned long flags;
7171
7172 if (qla2x00_reset_active(vha) ||
7173 (op->chip_reset != ha->base_qpair->chip_reset))
7174 return;
7175
7176 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7177 qlt_24xx_process_atio_queue(vha, 0);
7178 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7179
7180 spin_lock_irqsave(&ha->hardware_lock, flags);
7181 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
7182 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7183
7184 kfree(op);
7185 }
7186
7187 void
7188 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
7189 response_t *pkt)
7190 {
7191 struct qla_tgt_sess_op *op;
7192
7193 op = kzalloc(sizeof(*op), GFP_ATOMIC);
7194
7195 if (!op) {
7196 /* do not reach for ATIO queue here. This is best effort err
7197 * recovery at this point.
7198 */
7199 qlt_response_pkt_all_vps(vha, rsp, pkt);
7200 return;
7201 }
7202
7203 memcpy(&op->atio, pkt, sizeof(*pkt));
7204 op->vha = vha;
7205 op->chip_reset = vha->hw->base_qpair->chip_reset;
7206 op->rsp = rsp;
7207 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7208 queue_work(qla_tgt_wq, &op->work);
7209 return;
7210 }
7211
7212 int
7213 qlt_mem_alloc(struct qla_hw_data *ha)
7214 {
7215 if (!QLA_TGT_MODE_ENABLED())
7216 return 0;
7217
7218 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7219 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7220 &ha->tgt.atio_dma, GFP_KERNEL);
7221 if (!ha->tgt.atio_ring) {
7222 return -ENOMEM;
7223 }
7224 return 0;
7225 }
7226
7227 void
7228 qlt_mem_free(struct qla_hw_data *ha)
7229 {
7230 if (!QLA_TGT_MODE_ENABLED())
7231 return;
7232
7233 if (ha->tgt.atio_ring) {
7234 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7235 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7236 ha->tgt.atio_dma);
7237 }
7238 ha->tgt.atio_ring = NULL;
7239 ha->tgt.atio_dma = 0;
7240 }
7241
7242 static int __init qlt_parse_ini_mode(void)
7243 {
7244 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7245 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7246 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7247 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7248 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7249 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
7250 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7251 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
7252 else
7253 return false;
7254
7255 return true;
7256 }
7257
7258 int __init qlt_init(void)
7259 {
7260 int ret;
7261
7262 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
7263 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
7264
7265 if (!qlt_parse_ini_mode()) {
7266 ql_log(ql_log_fatal, NULL, 0xe06b,
7267 "qlt_parse_ini_mode() failed\n");
7268 return -EINVAL;
7269 }
7270
7271 if (!QLA_TGT_MODE_ENABLED())
7272 return 0;
7273
7274 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7275 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7276 qla_tgt_mgmt_cmd), 0, NULL);
7277 if (!qla_tgt_mgmt_cmd_cachep) {
7278 ql_log(ql_log_fatal, NULL, 0xd04b,
7279 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
7280 return -ENOMEM;
7281 }
7282
7283 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
7284 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7285 0, NULL);
7286
7287 if (!qla_tgt_plogi_cachep) {
7288 ql_log(ql_log_fatal, NULL, 0xe06d,
7289 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7290 ret = -ENOMEM;
7291 goto out_mgmt_cmd_cachep;
7292 }
7293
7294 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7295 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7296 if (!qla_tgt_mgmt_cmd_mempool) {
7297 ql_log(ql_log_fatal, NULL, 0xe06e,
7298 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7299 ret = -ENOMEM;
7300 goto out_plogi_cachep;
7301 }
7302
7303 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7304 if (!qla_tgt_wq) {
7305 ql_log(ql_log_fatal, NULL, 0xe06f,
7306 "alloc_workqueue for qla_tgt_wq failed\n");
7307 ret = -ENOMEM;
7308 goto out_cmd_mempool;
7309 }
7310 /*
7311 * Return 1 to signal that initiator-mode is being disabled
7312 */
7313 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7314
7315 out_cmd_mempool:
7316 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7317 out_plogi_cachep:
7318 kmem_cache_destroy(qla_tgt_plogi_cachep);
7319 out_mgmt_cmd_cachep:
7320 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7321 return ret;
7322 }
7323
7324 void qlt_exit(void)
7325 {
7326 if (!QLA_TGT_MODE_ENABLED())
7327 return;
7328
7329 destroy_workqueue(qla_tgt_wq);
7330 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7331 kmem_cache_destroy(qla_tgt_plogi_cachep);
7332 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7333 }
Linux kernel stable tree