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Merge tag 'regmap-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / qla_target.c
blob0d09480b66cd37a0f223afc60140f9202c594a2a
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 <asm/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 static int ql_dm_tgt_ex_pct = 0;
52 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
53 MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
54 "For Dual Mode (qlini_mode=dual), this parameter determines "
55 "the percentage of exchanges/cmds FW will allocate resources "
56 "for Target mode.");
57
58 int ql2xuctrlirq = 1;
59 module_param(ql2xuctrlirq, int, 0644);
60 MODULE_PARM_DESC(ql2xuctrlirq,
61 "User to control IRQ placement via smp_affinity."
62 "Valid with qlini_mode=disabled."
63 "1(default): enable");
64
65 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
66
67 static int qla_sam_status = SAM_STAT_BUSY;
68 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */
69
70 /*
71 * From scsi/fc/fc_fcp.h
72 */
73 enum fcp_resp_rsp_codes {
74 FCP_TMF_CMPL = 0,
75 FCP_DATA_LEN_INVALID = 1,
76 FCP_CMND_FIELDS_INVALID = 2,
77 FCP_DATA_PARAM_MISMATCH = 3,
78 FCP_TMF_REJECTED = 4,
79 FCP_TMF_FAILED = 5,
80 FCP_TMF_INVALID_LUN = 9,
81 };
82
83 /*
84 * fc_pri_ta from scsi/fc/fc_fcp.h
85 */
86 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
87 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
88 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
89 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
90 #define FCP_PTA_MASK 7 /* mask for task attribute field */
91 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
92 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
93
94 /*
95 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
96 * must be called under HW lock and could unlock/lock it inside.
97 * It isn't an issue, since in the current implementation on the time when
98 * those functions are called:
99 *
100 * - Either context is IRQ and only IRQ handler can modify HW data,
101 * including rings related fields,
102 *
103 * - Or access to target mode variables from struct qla_tgt doesn't
104 * cross those functions boundaries, except tgt_stop, which
105 * additionally protected by irq_cmd_count.
106 */
107 /* Predefs for callbacks handed to qla2xxx LLD */
108 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
109 struct atio_from_isp *pkt, uint8_t);
110 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
111 response_t *pkt);
112 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
113 int fn, void *iocb, int flags);
114 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
115 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
116 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
117 struct atio_from_isp *atio, uint16_t status, int qfull);
118 static void qlt_disable_vha(struct scsi_qla_host *vha);
119 static void qlt_clear_tgt_db(struct qla_tgt *tgt);
120 static void qlt_send_notify_ack(struct qla_qpair *qpair,
121 struct imm_ntfy_from_isp *ntfy,
122 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
123 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
124 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
125 struct imm_ntfy_from_isp *imm, int ha_locked);
126 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
127 fc_port_t *fcport, bool local);
128 void qlt_unreg_sess(struct fc_port *sess);
129 static void qlt_24xx_handle_abts(struct scsi_qla_host *,
130 struct abts_recv_from_24xx *);
131 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
132 uint16_t);
133 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t);
134 static inline uint32_t qlt_make_handle(struct qla_qpair *);
135
136 /*
137 * Global Variables
138 */
139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
140 struct kmem_cache *qla_tgt_plogi_cachep;
141 static mempool_t *qla_tgt_mgmt_cmd_mempool;
142 static struct workqueue_struct *qla_tgt_wq;
143 static DEFINE_MUTEX(qla_tgt_mutex);
144 static LIST_HEAD(qla_tgt_glist);
145
146 static const char *prot_op_str(u32 prot_op)
147 {
148 switch (prot_op) {
149 case TARGET_PROT_NORMAL: return "NORMAL";
150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
154 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
156 default: return "UNKNOWN";
157 }
158 }
159
160 /* This API intentionally takes dest as a parameter, rather than returning
161 * int value to avoid caller forgetting to issue wmb() after the store */
162 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
163 {
164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
165 *dest = atomic_inc_return(&base_vha->generation_tick);
166 /* memory barrier */
167 wmb();
168 }
169
170 /* Might release hw lock, then reaquire!! */
171 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
172 {
173 /* Send marker if required */
174 if (unlikely(vha->marker_needed != 0)) {
175 int rc = qla2x00_issue_marker(vha, vha_locked);
176
177 if (rc != QLA_SUCCESS) {
178 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
179 "qla_target(%d): issue_marker() failed\n",
180 vha->vp_idx);
181 }
182 return rc;
183 }
184 return QLA_SUCCESS;
185 }
186
187 static inline
188 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
189 be_id_t d_id)
190 {
191 struct scsi_qla_host *host;
192 uint32_t key;
193
194 if (vha->d_id.b.area == d_id.area &&
195 vha->d_id.b.domain == d_id.domain &&
196 vha->d_id.b.al_pa == d_id.al_pa)
197 return vha;
198
199 key = be_to_port_id(d_id).b24;
200
201 host = btree_lookup32(&vha->hw->tgt.host_map, key);
202 if (!host)
203 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
204 "Unable to find host %06x\n", key);
205
206 return host;
207 }
208
209 static inline
210 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
211 uint16_t vp_idx)
212 {
213 struct qla_hw_data *ha = vha->hw;
214
215 if (vha->vp_idx == vp_idx)
216 return vha;
217
218 BUG_ON(ha->tgt.tgt_vp_map == NULL);
219 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
220 return ha->tgt.tgt_vp_map[vp_idx].vha;
221
222 return NULL;
223 }
224
225 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
226 {
227 unsigned long flags;
228
229 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
230
231 vha->hw->tgt.num_pend_cmds++;
232 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
233 vha->qla_stats.stat_max_pend_cmds =
234 vha->hw->tgt.num_pend_cmds;
235 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
236 }
237 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
238 {
239 unsigned long flags;
240
241 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
242 vha->hw->tgt.num_pend_cmds--;
243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
244 }
245
246
247 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
248 struct atio_from_isp *atio, uint8_t ha_locked)
249 {
250 struct qla_tgt_sess_op *u;
251 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
252 unsigned long flags;
253
254 if (tgt->tgt_stop) {
255 ql_dbg(ql_dbg_async, vha, 0x502c,
256 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
257 vha->vp_idx);
258 goto out_term;
259 }
260
261 u = kzalloc(sizeof(*u), GFP_ATOMIC);
262 if (u == NULL)
263 goto out_term;
264
265 u->vha = vha;
266 memcpy(&u->atio, atio, sizeof(*atio));
267 INIT_LIST_HEAD(&u->cmd_list);
268
269 spin_lock_irqsave(&vha->cmd_list_lock, flags);
270 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
271 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
272
273 schedule_delayed_work(&vha->unknown_atio_work, 1);
274
275 out:
276 return;
277
278 out_term:
279 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
280 goto out;
281 }
282
283 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
284 uint8_t ha_locked)
285 {
286 struct qla_tgt_sess_op *u, *t;
287 scsi_qla_host_t *host;
288 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
289 unsigned long flags;
290 uint8_t queued = 0;
291
292 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
293 if (u->aborted) {
294 ql_dbg(ql_dbg_async, vha, 0x502e,
295 "Freeing unknown %s %p, because of Abort\n",
296 "ATIO_TYPE7", u);
297 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
298 &u->atio, ha_locked, 0);
299 goto abort;
300 }
301
302 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
303 if (host != NULL) {
304 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
305 "Requeuing unknown ATIO_TYPE7 %p\n", u);
306 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
307 } else if (tgt->tgt_stop) {
308 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
309 "Freeing unknown %s %p, because tgt is being stopped\n",
310 "ATIO_TYPE7", u);
311 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
312 &u->atio, ha_locked, 0);
313 } else {
314 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
315 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
316 if (!queued) {
317 queued = 1;
318 schedule_delayed_work(&vha->unknown_atio_work,
319 1);
320 }
321 continue;
322 }
323
324 abort:
325 spin_lock_irqsave(&vha->cmd_list_lock, flags);
326 list_del(&u->cmd_list);
327 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
328 kfree(u);
329 }
330 }
331
332 void qlt_unknown_atio_work_fn(struct work_struct *work)
333 {
334 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
335 struct scsi_qla_host, unknown_atio_work);
336
337 qlt_try_to_dequeue_unknown_atios(vha, 0);
338 }
339
340 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
341 struct atio_from_isp *atio, uint8_t ha_locked)
342 {
343 ql_dbg(ql_dbg_tgt, vha, 0xe072,
344 "%s: qla_target(%d): type %x ox_id %04x\n",
345 __func__, vha->vp_idx, atio->u.raw.entry_type,
346 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
347
348 switch (atio->u.raw.entry_type) {
349 case ATIO_TYPE7:
350 {
351 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
352 atio->u.isp24.fcp_hdr.d_id);
353 if (unlikely(NULL == host)) {
354 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
355 "qla_target(%d): Received ATIO_TYPE7 "
356 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
357 atio->u.isp24.fcp_hdr.d_id.domain,
358 atio->u.isp24.fcp_hdr.d_id.area,
359 atio->u.isp24.fcp_hdr.d_id.al_pa);
360
361
362 qlt_queue_unknown_atio(vha, atio, ha_locked);
363 break;
364 }
365 if (unlikely(!list_empty(&vha->unknown_atio_list)))
366 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
367
368 qlt_24xx_atio_pkt(host, atio, ha_locked);
369 break;
370 }
371
372 case IMMED_NOTIFY_TYPE:
373 {
374 struct scsi_qla_host *host = vha;
375 struct imm_ntfy_from_isp *entry =
376 (struct imm_ntfy_from_isp *)atio;
377
378 qlt_issue_marker(vha, ha_locked);
379
380 if ((entry->u.isp24.vp_index != 0xFF) &&
381 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) {
382 host = qlt_find_host_by_vp_idx(vha,
383 entry->u.isp24.vp_index);
384 if (unlikely(!host)) {
385 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
386 "qla_target(%d): Received "
387 "ATIO (IMMED_NOTIFY_TYPE) "
388 "with unknown vp_index %d\n",
389 vha->vp_idx, entry->u.isp24.vp_index);
390 break;
391 }
392 }
393 qlt_24xx_atio_pkt(host, atio, ha_locked);
394 break;
395 }
396
397 case VP_RPT_ID_IOCB_TYPE:
398 qla24xx_report_id_acquisition(vha,
399 (struct vp_rpt_id_entry_24xx *)atio);
400 break;
401
402 case ABTS_RECV_24XX:
403 {
404 struct abts_recv_from_24xx *entry =
405 (struct abts_recv_from_24xx *)atio;
406 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
407 entry->vp_index);
408 unsigned long flags;
409
410 if (unlikely(!host)) {
411 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
412 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
413 "received, with unknown vp_index %d\n",
414 vha->vp_idx, entry->vp_index);
415 break;
416 }
417 if (!ha_locked)
418 spin_lock_irqsave(&host->hw->hardware_lock, flags);
419 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
420 if (!ha_locked)
421 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
422 break;
423 }
424
425 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
426
427 default:
428 ql_dbg(ql_dbg_tgt, vha, 0xe040,
429 "qla_target(%d): Received unknown ATIO atio "
430 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
431 break;
432 }
433
434 return false;
435 }
436
437 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
438 struct rsp_que *rsp, response_t *pkt)
439 {
440 switch (pkt->entry_type) {
441 case CTIO_CRC2:
442 ql_dbg(ql_dbg_tgt, vha, 0xe073,
443 "qla_target(%d):%s: CRC2 Response pkt\n",
444 vha->vp_idx, __func__);
445 fallthrough;
446 case CTIO_TYPE7:
447 {
448 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
449 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
450 entry->vp_index);
451 if (unlikely(!host)) {
452 ql_dbg(ql_dbg_tgt, vha, 0xe041,
453 "qla_target(%d): Response pkt (CTIO_TYPE7) "
454 "received, with unknown vp_index %d\n",
455 vha->vp_idx, entry->vp_index);
456 break;
457 }
458 qlt_response_pkt(host, rsp, pkt);
459 break;
460 }
461
462 case IMMED_NOTIFY_TYPE:
463 {
464 struct scsi_qla_host *host;
465 struct imm_ntfy_from_isp *entry =
466 (struct imm_ntfy_from_isp *)pkt;
467
468 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
469 if (unlikely(!host)) {
470 ql_dbg(ql_dbg_tgt, vha, 0xe042,
471 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
472 "received, with unknown vp_index %d\n",
473 vha->vp_idx, entry->u.isp24.vp_index);
474 break;
475 }
476 qlt_response_pkt(host, rsp, pkt);
477 break;
478 }
479
480 case NOTIFY_ACK_TYPE:
481 {
482 struct scsi_qla_host *host = vha;
483 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
484
485 if (0xFF != entry->u.isp24.vp_index) {
486 host = qlt_find_host_by_vp_idx(vha,
487 entry->u.isp24.vp_index);
488 if (unlikely(!host)) {
489 ql_dbg(ql_dbg_tgt, vha, 0xe043,
490 "qla_target(%d): Response "
491 "pkt (NOTIFY_ACK_TYPE) "
492 "received, with unknown "
493 "vp_index %d\n", vha->vp_idx,
494 entry->u.isp24.vp_index);
495 break;
496 }
497 }
498 qlt_response_pkt(host, rsp, pkt);
499 break;
500 }
501
502 case ABTS_RECV_24XX:
503 {
504 struct abts_recv_from_24xx *entry =
505 (struct abts_recv_from_24xx *)pkt;
506 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
507 entry->vp_index);
508 if (unlikely(!host)) {
509 ql_dbg(ql_dbg_tgt, vha, 0xe044,
510 "qla_target(%d): Response pkt "
511 "(ABTS_RECV_24XX) received, with unknown "
512 "vp_index %d\n", vha->vp_idx, entry->vp_index);
513 break;
514 }
515 qlt_response_pkt(host, rsp, pkt);
516 break;
517 }
518
519 case ABTS_RESP_24XX:
520 {
521 struct abts_resp_to_24xx *entry =
522 (struct abts_resp_to_24xx *)pkt;
523 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
524 entry->vp_index);
525 if (unlikely(!host)) {
526 ql_dbg(ql_dbg_tgt, vha, 0xe045,
527 "qla_target(%d): Response pkt "
528 "(ABTS_RECV_24XX) received, with unknown "
529 "vp_index %d\n", vha->vp_idx, entry->vp_index);
530 break;
531 }
532 qlt_response_pkt(host, rsp, pkt);
533 break;
534 }
535 default:
536 qlt_response_pkt(vha, rsp, pkt);
537 break;
538 }
539
540 }
541
542 /*
543 * All qlt_plogi_ack_t operations are protected by hardware_lock
544 */
545 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
546 struct imm_ntfy_from_isp *ntfy, int type)
547 {
548 struct qla_work_evt *e;
549
550 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
551 if (!e)
552 return QLA_FUNCTION_FAILED;
553
554 e->u.nack.fcport = fcport;
555 e->u.nack.type = type;
556 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
557 return qla2x00_post_work(vha, e);
558 }
559
560 static void qla2x00_async_nack_sp_done(srb_t *sp, int res)
561 {
562 struct scsi_qla_host *vha = sp->vha;
563 unsigned long flags;
564
565 ql_dbg(ql_dbg_disc, vha, 0x20f2,
566 "Async done-%s res %x %8phC type %d\n",
567 sp->name, res, sp->fcport->port_name, sp->type);
568
569 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
570 sp->fcport->flags &= ~FCF_ASYNC_SENT;
571 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
572
573 switch (sp->type) {
574 case SRB_NACK_PLOGI:
575 sp->fcport->login_gen++;
576 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
577 sp->fcport->logout_on_delete = 1;
578 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
579 sp->fcport->send_els_logo = 0;
580 break;
581
582 case SRB_NACK_PRLI:
583 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
584 sp->fcport->deleted = 0;
585 sp->fcport->send_els_logo = 0;
586
587 if (!sp->fcport->login_succ &&
588 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
589 sp->fcport->login_succ = 1;
590
591 vha->fcport_count++;
592 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
593 qla24xx_sched_upd_fcport(sp->fcport);
594 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
595 } else {
596 sp->fcport->login_retry = 0;
597 qla2x00_set_fcport_disc_state(sp->fcport,
598 DSC_LOGIN_COMPLETE);
599 sp->fcport->deleted = 0;
600 sp->fcport->logout_on_delete = 1;
601 }
602 break;
603
604 case SRB_NACK_LOGO:
605 sp->fcport->login_gen++;
606 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
607 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
608 break;
609 }
610 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
611
612 sp->free(sp);
613 }
614
615 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
616 struct imm_ntfy_from_isp *ntfy, int type)
617 {
618 int rval = QLA_FUNCTION_FAILED;
619 srb_t *sp;
620 char *c = NULL;
621
622 fcport->flags |= FCF_ASYNC_SENT;
623 switch (type) {
624 case SRB_NACK_PLOGI:
625 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
626 c = "PLOGI";
627 break;
628 case SRB_NACK_PRLI:
629 fcport->fw_login_state = DSC_LS_PRLI_PEND;
630 fcport->deleted = 0;
631 c = "PRLI";
632 break;
633 case SRB_NACK_LOGO:
634 fcport->fw_login_state = DSC_LS_LOGO_PEND;
635 c = "LOGO";
636 break;
637 }
638
639 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
640 if (!sp)
641 goto done;
642
643 sp->type = type;
644 sp->name = "nack";
645
646 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
647 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
648
649 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
650 sp->done = qla2x00_async_nack_sp_done;
651
652 ql_dbg(ql_dbg_disc, vha, 0x20f4,
653 "Async-%s %8phC hndl %x %s\n",
654 sp->name, fcport->port_name, sp->handle, c);
655
656 rval = qla2x00_start_sp(sp);
657 if (rval != QLA_SUCCESS)
658 goto done_free_sp;
659
660 return rval;
661
662 done_free_sp:
663 sp->free(sp);
664 done:
665 fcport->flags &= ~FCF_ASYNC_SENT;
666 return rval;
667 }
668
669 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
670 {
671 fc_port_t *t;
672
673 switch (e->u.nack.type) {
674 case SRB_NACK_PRLI:
675 t = e->u.nack.fcport;
676 flush_work(&t->del_work);
677 flush_work(&t->free_work);
678 mutex_lock(&vha->vha_tgt.tgt_mutex);
679 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
680 mutex_unlock(&vha->vha_tgt.tgt_mutex);
681 if (t) {
682 ql_log(ql_log_info, vha, 0xd034,
683 "%s create sess success %p", __func__, t);
684 /* create sess has an extra kref */
685 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
686 }
687 break;
688 }
689 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
690 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type);
691 }
692
693 void qla24xx_delete_sess_fn(struct work_struct *work)
694 {
695 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
696 struct qla_hw_data *ha = fcport->vha->hw;
697
698 if (fcport->se_sess) {
699 ha->tgt.tgt_ops->shutdown_sess(fcport);
700 ha->tgt.tgt_ops->put_sess(fcport);
701 } else {
702 qlt_unreg_sess(fcport);
703 }
704 }
705
706 /*
707 * Called from qla2x00_reg_remote_port()
708 */
709 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
710 {
711 struct qla_hw_data *ha = vha->hw;
712 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
713 struct fc_port *sess = fcport;
714 unsigned long flags;
715
716 if (!vha->hw->tgt.tgt_ops)
717 return;
718
719 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
720 if (tgt->tgt_stop) {
721 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
722 return;
723 }
724
725 if (fcport->disc_state == DSC_DELETE_PEND) {
726 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
727 return;
728 }
729
730 if (!sess->se_sess) {
731 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
732
733 mutex_lock(&vha->vha_tgt.tgt_mutex);
734 sess = qlt_create_sess(vha, fcport, false);
735 mutex_unlock(&vha->vha_tgt.tgt_mutex);
736
737 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
738 } else {
739 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
740 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
741 return;
742 }
743
744 if (!kref_get_unless_zero(&sess->sess_kref)) {
745 ql_dbg(ql_dbg_disc, vha, 0x2107,
746 "%s: kref_get fail sess %8phC \n",
747 __func__, sess->port_name);
748 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
749 return;
750 }
751
752 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
753 "qla_target(%u): %ssession for port %8phC "
754 "(loop ID %d) reappeared\n", vha->vp_idx,
755 sess->local ? "local " : "", sess->port_name, sess->loop_id);
756
757 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
758 "Reappeared sess %p\n", sess);
759
760 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
761 fcport->loop_id,
762 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
763 }
764
765 if (sess && sess->local) {
766 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
767 "qla_target(%u): local session for "
768 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
769 fcport->port_name, sess->loop_id);
770 sess->local = 0;
771 }
772 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
773
774 ha->tgt.tgt_ops->put_sess(sess);
775 }
776
777 /*
778 * This is a zero-base ref-counting solution, since hardware_lock
779 * guarantees that ref_count is not modified concurrently.
780 * Upon successful return content of iocb is undefined
781 */
782 static struct qlt_plogi_ack_t *
783 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
784 struct imm_ntfy_from_isp *iocb)
785 {
786 struct qlt_plogi_ack_t *pla;
787
788 lockdep_assert_held(&vha->hw->hardware_lock);
789
790 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
791 if (pla->id.b24 == id->b24) {
792 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d,
793 "%s %d %8phC Term INOT due to new INOT",
794 __func__, __LINE__,
795 pla->iocb.u.isp24.port_name);
796 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
797 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
798 return pla;
799 }
800 }
801
802 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
803 if (!pla) {
804 ql_dbg(ql_dbg_async, vha, 0x5088,
805 "qla_target(%d): Allocation of plogi_ack failed\n",
806 vha->vp_idx);
807 return NULL;
808 }
809
810 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
811 pla->id = *id;
812 list_add_tail(&pla->list, &vha->plogi_ack_list);
813
814 return pla;
815 }
816
817 void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
818 struct qlt_plogi_ack_t *pla)
819 {
820 struct imm_ntfy_from_isp *iocb = &pla->iocb;
821 port_id_t port_id;
822 uint16_t loop_id;
823 fc_port_t *fcport = pla->fcport;
824
825 BUG_ON(!pla->ref_count);
826 pla->ref_count--;
827
828 if (pla->ref_count)
829 return;
830
831 ql_dbg(ql_dbg_disc, vha, 0x5089,
832 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
833 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
834 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
835 iocb->u.isp24.port_id[0],
836 le16_to_cpu(iocb->u.isp24.nport_handle),
837 iocb->u.isp24.exchange_address, iocb->ox_id);
838
839 port_id.b.domain = iocb->u.isp24.port_id[2];
840 port_id.b.area = iocb->u.isp24.port_id[1];
841 port_id.b.al_pa = iocb->u.isp24.port_id[0];
842 port_id.b.rsvd_1 = 0;
843
844 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
845
846 fcport->loop_id = loop_id;
847 fcport->d_id = port_id;
848 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
849 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
850 else
851 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
852
853 list_for_each_entry(fcport, &vha->vp_fcports, list) {
854 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
855 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
856 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
857 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
858 }
859
860 list_del(&pla->list);
861 kmem_cache_free(qla_tgt_plogi_cachep, pla);
862 }
863
864 void
865 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
866 struct fc_port *sess, enum qlt_plogi_link_t link)
867 {
868 struct imm_ntfy_from_isp *iocb = &pla->iocb;
869 /* Inc ref_count first because link might already be pointing at pla */
870 pla->ref_count++;
871
872 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
873 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
874 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
875 sess, link, sess->port_name,
876 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
877 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
878 pla->ref_count, pla, link);
879
880 if (link == QLT_PLOGI_LINK_CONFLICT) {
881 switch (sess->disc_state) {
882 case DSC_DELETED:
883 case DSC_DELETE_PEND:
884 pla->ref_count--;
885 return;
886 default:
887 break;
888 }
889 }
890
891 if (sess->plogi_link[link])
892 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
893
894 if (link == QLT_PLOGI_LINK_SAME_WWN)
895 pla->fcport = sess;
896
897 sess->plogi_link[link] = pla;
898 }
899
900 typedef struct {
901 /* These fields must be initialized by the caller */
902 port_id_t id;
903 /*
904 * number of cmds dropped while we were waiting for
905 * initiator to ack LOGO initialize to 1 if LOGO is
906 * triggered by a command, otherwise, to 0
907 */
908 int cmd_count;
909
910 /* These fields are used by callee */
911 struct list_head list;
912 } qlt_port_logo_t;
913
914 static void
915 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
916 {
917 qlt_port_logo_t *tmp;
918 int res;
919
920 mutex_lock(&vha->vha_tgt.tgt_mutex);
921
922 list_for_each_entry(tmp, &vha->logo_list, list) {
923 if (tmp->id.b24 == logo->id.b24) {
924 tmp->cmd_count += logo->cmd_count;
925 mutex_unlock(&vha->vha_tgt.tgt_mutex);
926 return;
927 }
928 }
929
930 list_add_tail(&logo->list, &vha->logo_list);
931
932 mutex_unlock(&vha->vha_tgt.tgt_mutex);
933
934 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
935
936 mutex_lock(&vha->vha_tgt.tgt_mutex);
937 list_del(&logo->list);
938 mutex_unlock(&vha->vha_tgt.tgt_mutex);
939
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 if (!own)
976 qlt_send_first_logo(vha, &logo);
977 sess->send_els_logo = 0;
978 }
979
980 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
981 int rc;
982
983 if (!own ||
984 (own &&
985 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
986 rc = qla2x00_post_async_logout_work(vha, sess,
987 NULL);
988 if (rc != QLA_SUCCESS)
989 ql_log(ql_log_warn, vha, 0xf085,
990 "Schedule logo failed sess %p rc %d\n",
991 sess, rc);
992 else
993 logout_started = true;
994 } else if (own && (own->iocb.u.isp24.status_subcode ==
995 ELS_PRLI) && ha->flags.rida_fmt2) {
996 rc = qla2x00_post_async_prlo_work(vha, sess,
997 NULL);
998 if (rc != QLA_SUCCESS)
999 ql_log(ql_log_warn, vha, 0xf085,
1000 "Schedule PRLO failed sess %p rc %d\n",
1001 sess, rc);
1002 else
1003 logout_started = true;
1004 }
1005 } /* if sess->logout_on_delete */
1006
1007 if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
1008 !(sess->nvme_flag & NVME_FLAG_DELETING)) {
1009 sess->nvme_flag |= NVME_FLAG_DELETING;
1010 qla_nvme_unregister_remote_port(sess);
1011 }
1012 }
1013
1014 /*
1015 * Release the target session for FC Nexus from fabric module code.
1016 */
1017 if (sess->se_sess != NULL)
1018 ha->tgt.tgt_ops->free_session(sess);
1019
1020 if (logout_started) {
1021 bool traced = false;
1022 u16 cnt = 0;
1023
1024 while (!READ_ONCE(sess->logout_completed)) {
1025 if (!traced) {
1026 ql_dbg(ql_dbg_disc, vha, 0xf086,
1027 "%s: waiting for sess %p logout\n",
1028 __func__, sess);
1029 traced = true;
1030 }
1031 msleep(100);
1032 cnt++;
1033 if (cnt > 200)
1034 break;
1035 }
1036
1037 ql_dbg(ql_dbg_disc, vha, 0xf087,
1038 "%s: sess %p logout completed\n", __func__, sess);
1039 }
1040
1041 if (sess->logo_ack_needed) {
1042 sess->logo_ack_needed = 0;
1043 qla24xx_async_notify_ack(vha, sess,
1044 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
1045 }
1046
1047 spin_lock_irqsave(&vha->work_lock, flags);
1048 sess->flags &= ~FCF_ASYNC_SENT;
1049 spin_unlock_irqrestore(&vha->work_lock, flags);
1050
1051 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1052 if (sess->se_sess) {
1053 sess->se_sess = NULL;
1054 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1055 tgt->sess_count--;
1056 }
1057
1058 qla2x00_set_fcport_disc_state(sess, DSC_DELETED);
1059 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1060 sess->deleted = QLA_SESS_DELETED;
1061
1062 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1063 vha->fcport_count--;
1064 sess->login_succ = 0;
1065 }
1066
1067 qla2x00_clear_loop_id(sess);
1068
1069 if (sess->conflict) {
1070 sess->conflict->login_pause = 0;
1071 sess->conflict = NULL;
1072 if (!test_bit(UNLOADING, &vha->dpc_flags))
1073 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1074 }
1075
1076 {
1077 struct qlt_plogi_ack_t *con =
1078 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
1079 struct imm_ntfy_from_isp *iocb;
1080
1081 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
1082
1083 if (con) {
1084 iocb = &con->iocb;
1085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
1086 "se_sess %p / sess %p port %8phC is gone,"
1087 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1088 sess->se_sess, sess, sess->port_name,
1089 own ? "releasing own PLOGI" : "no own PLOGI pending",
1090 own ? own->ref_count : -1,
1091 iocb->u.isp24.port_name, con->ref_count);
1092 qlt_plogi_ack_unref(vha, con);
1093 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
1094 } else {
1095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1096 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1097 sess->se_sess, sess, sess->port_name,
1098 own ? "releasing own PLOGI" :
1099 "no own PLOGI pending",
1100 own ? own->ref_count : -1);
1101 }
1102
1103 if (own) {
1104 sess->fw_login_state = DSC_LS_PLOGI_PEND;
1105 qlt_plogi_ack_unref(vha, own);
1106 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1107 }
1108 }
1109
1110 sess->explicit_logout = 0;
1111 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1112 sess->free_pending = 0;
1113
1114 qla2x00_dfs_remove_rport(vha, sess);
1115
1116 ql_dbg(ql_dbg_disc, vha, 0xf001,
1117 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1118 sess, sess->port_name, vha->fcport_count);
1119
1120 if (tgt && (tgt->sess_count == 0))
1121 wake_up_all(&tgt->waitQ);
1122
1123 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) &&
1124 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) &&
1125 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
1126 switch (vha->host->active_mode) {
1127 case MODE_INITIATOR:
1128 case MODE_DUAL:
1129 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1130 qla2xxx_wake_dpc(vha);
1131 break;
1132 case MODE_TARGET:
1133 default:
1134 /* no-op */
1135 break;
1136 }
1137 }
1138
1139 if (vha->fcport_count == 0)
1140 wake_up_all(&vha->fcport_waitQ);
1141 }
1142
1143 /* ha->tgt.sess_lock supposed to be held on entry */
1144 void qlt_unreg_sess(struct fc_port *sess)
1145 {
1146 struct scsi_qla_host *vha = sess->vha;
1147 unsigned long flags;
1148
1149 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
1150 "%s sess %p for deletion %8phC\n",
1151 __func__, sess, sess->port_name);
1152
1153 spin_lock_irqsave(&sess->vha->work_lock, flags);
1154 if (sess->free_pending) {
1155 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1156 return;
1157 }
1158 sess->free_pending = 1;
1159 /*
1160 * Use FCF_ASYNC_SENT flag to block other cmds used in sess
1161 * management from being sent.
1162 */
1163 sess->flags |= FCF_ASYNC_SENT;
1164 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1165
1166 if (sess->se_sess)
1167 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
1168
1169 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1170 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
1171 sess->last_rscn_gen = sess->rscn_gen;
1172 sess->last_login_gen = sess->login_gen;
1173
1174 queue_work(sess->vha->hw->wq, &sess->free_work);
1175 }
1176 EXPORT_SYMBOL(qlt_unreg_sess);
1177
1178 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1179 {
1180 struct qla_hw_data *ha = vha->hw;
1181 struct fc_port *sess = NULL;
1182 uint16_t loop_id;
1183 int res = 0;
1184 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
1185 unsigned long flags;
1186
1187 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1188 if (loop_id == 0xFFFF) {
1189 /* Global event */
1190 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
1191 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1192 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
1193 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1194 } else {
1195 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1196 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
1197 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1198 }
1199
1200 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1201 "Using sess for qla_tgt_reset: %p\n", sess);
1202 if (!sess) {
1203 res = -ESRCH;
1204 return res;
1205 }
1206
1207 ql_dbg(ql_dbg_tgt, vha, 0xe047,
1208 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1209 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
1210 mcmd, loop_id);
1211
1212 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
1213 }
1214
1215 static void qla24xx_chk_fcp_state(struct fc_port *sess)
1216 {
1217 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
1218 sess->logout_on_delete = 0;
1219 sess->logo_ack_needed = 0;
1220 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1221 }
1222 }
1223
1224 void qlt_schedule_sess_for_deletion(struct fc_port *sess)
1225 {
1226 struct qla_tgt *tgt = sess->tgt;
1227 unsigned long flags;
1228 u16 sec;
1229
1230 switch (sess->disc_state) {
1231 case DSC_DELETE_PEND:
1232 return;
1233 case DSC_DELETED:
1234 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1235 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) {
1236 if (tgt && tgt->tgt_stop && tgt->sess_count == 0)
1237 wake_up_all(&tgt->waitQ);
1238
1239 if (sess->vha->fcport_count == 0)
1240 wake_up_all(&sess->vha->fcport_waitQ);
1241 return;
1242 }
1243 break;
1244 case DSC_UPD_FCPORT:
1245 /*
1246 * This port is not done reporting to upper layer.
1247 * let it finish
1248 */
1249 sess->next_disc_state = DSC_DELETE_PEND;
1250 sec = jiffies_to_msecs(jiffies -
1251 sess->jiffies_at_registration)/1000;
1252 if (sess->sec_since_registration < sec && sec && !(sec % 5)) {
1253 sess->sec_since_registration = sec;
1254 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
1255 "%s %8phC : Slow Rport registration(%d Sec)\n",
1256 __func__, sess->port_name, sec);
1257 }
1258 return;
1259 default:
1260 break;
1261 }
1262
1263 spin_lock_irqsave(&sess->vha->work_lock, flags);
1264 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1265 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1266 return;
1267 }
1268 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1269 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1270
1271 sess->prli_pend_timer = 0;
1272 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
1273
1274 qla24xx_chk_fcp_state(sess);
1275
1276 ql_dbg(ql_log_warn, sess->vha, 0xe001,
1277 "Scheduling sess %p for deletion %8phC\n",
1278 sess, sess->port_name);
1279
1280 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
1281 }
1282
1283 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
1284 {
1285 struct fc_port *sess;
1286 scsi_qla_host_t *vha = tgt->vha;
1287
1288 list_for_each_entry(sess, &vha->vp_fcports, list) {
1289 if (sess->se_sess)
1290 qlt_schedule_sess_for_deletion(sess);
1291 }
1292
1293 /* At this point tgt could be already dead */
1294 }
1295
1296 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id,
1297 uint16_t *loop_id)
1298 {
1299 struct qla_hw_data *ha = vha->hw;
1300 dma_addr_t gid_list_dma;
1301 struct gid_list_info *gid_list, *gid;
1302 int res, rc, i;
1303 uint16_t entries;
1304
1305 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1306 &gid_list_dma, GFP_KERNEL);
1307 if (!gid_list) {
1308 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1309 "qla_target(%d): DMA Alloc failed of %u\n",
1310 vha->vp_idx, qla2x00_gid_list_size(ha));
1311 return -ENOMEM;
1312 }
1313
1314 /* Get list of logged in devices */
1315 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
1316 if (rc != QLA_SUCCESS) {
1317 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1318 "qla_target(%d): get_id_list() failed: %x\n",
1319 vha->vp_idx, rc);
1320 res = -EBUSY;
1321 goto out_free_id_list;
1322 }
1323
1324 gid = gid_list;
1325 res = -ENOENT;
1326 for (i = 0; i < entries; i++) {
1327 if (gid->al_pa == s_id.al_pa &&
1328 gid->area == s_id.area &&
1329 gid->domain == s_id.domain) {
1330 *loop_id = le16_to_cpu(gid->loop_id);
1331 res = 0;
1332 break;
1333 }
1334 gid = (void *)gid + ha->gid_list_info_size;
1335 }
1336
1337 out_free_id_list:
1338 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1339 gid_list, gid_list_dma);
1340 return res;
1341 }
1342
1343 /*
1344 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1345 * Caller must put it.
1346 */
1347 static struct fc_port *qlt_create_sess(
1348 struct scsi_qla_host *vha,
1349 fc_port_t *fcport,
1350 bool local)
1351 {
1352 struct qla_hw_data *ha = vha->hw;
1353 struct fc_port *sess = fcport;
1354 unsigned long flags;
1355
1356 if (vha->vha_tgt.qla_tgt->tgt_stop)
1357 return NULL;
1358
1359 if (fcport->se_sess) {
1360 if (!kref_get_unless_zero(&sess->sess_kref)) {
1361 ql_dbg(ql_dbg_disc, vha, 0x20f6,
1362 "%s: kref_get_unless_zero failed for %8phC\n",
1363 __func__, sess->port_name);
1364 return NULL;
1365 }
1366 return fcport;
1367 }
1368 sess->tgt = vha->vha_tgt.qla_tgt;
1369 sess->local = local;
1370
1371 /*
1372 * Under normal circumstances we want to logout from firmware when
1373 * session eventually ends and release corresponding nport handle.
1374 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
1375 * code will adjust these flags as necessary.
1376 */
1377 sess->logout_on_delete = 1;
1378 sess->keep_nport_handle = 0;
1379 sess->logout_completed = 0;
1380
1381 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1382 &fcport->port_name[0], sess) < 0) {
1383 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
1384 "(%d) %8phC check_initiator_node_acl failed\n",
1385 vha->vp_idx, fcport->port_name);
1386 return NULL;
1387 } else {
1388 kref_init(&fcport->sess_kref);
1389 /*
1390 * Take an extra reference to ->sess_kref here to handle
1391 * fc_port access across ->tgt.sess_lock reaquire.
1392 */
1393 if (!kref_get_unless_zero(&sess->sess_kref)) {
1394 ql_dbg(ql_dbg_disc, vha, 0x20f7,
1395 "%s: kref_get_unless_zero failed for %8phC\n",
1396 __func__, sess->port_name);
1397 return NULL;
1398 }
1399
1400 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1401 if (!IS_SW_RESV_ADDR(sess->d_id))
1402 vha->vha_tgt.qla_tgt->sess_count++;
1403
1404 qlt_do_generation_tick(vha, &sess->generation);
1405 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1406 }
1407
1408 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1409 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1410 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1411 vha->vha_tgt.qla_tgt->sess_count);
1412
1413 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
1414 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1415 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1416 vha->vp_idx, local ? "local " : "", fcport->port_name,
1417 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1418 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
1419
1420 return sess;
1421 }
1422
1423 /*
1424 * max_gen - specifies maximum session generation
1425 * at which this deletion requestion is still valid
1426 */
1427 void
1428 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
1429 {
1430 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1431 struct fc_port *sess = fcport;
1432 unsigned long flags;
1433
1434 if (!vha->hw->tgt.tgt_ops)
1435 return;
1436
1437 if (!tgt)
1438 return;
1439
1440 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
1441 if (tgt->tgt_stop) {
1442 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1443 return;
1444 }
1445 if (!sess->se_sess) {
1446 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1447 return;
1448 }
1449
1450 if (max_gen - sess->generation < 0) {
1451 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1452 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1453 "Ignoring stale deletion request for se_sess %p / sess %p"
1454 " for port %8phC, req_gen %d, sess_gen %d\n",
1455 sess->se_sess, sess, sess->port_name, max_gen,
1456 sess->generation);
1457 return;
1458 }
1459
1460 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1461
1462 sess->local = 1;
1463 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1464 qlt_schedule_sess_for_deletion(sess);
1465 }
1466
1467 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1468 {
1469 struct qla_hw_data *ha = tgt->ha;
1470 unsigned long flags;
1471 int res;
1472 /*
1473 * We need to protect against race, when tgt is freed before or
1474 * inside wake_up()
1475 */
1476 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1477 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1478 "tgt %p, sess_count=%d\n",
1479 tgt, tgt->sess_count);
1480 res = (tgt->sess_count == 0);
1481 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1482
1483 return res;
1484 }
1485
1486 /* Called by tcm_qla2xxx configfs code */
1487 int qlt_stop_phase1(struct qla_tgt *tgt)
1488 {
1489 struct scsi_qla_host *vha = tgt->vha;
1490 struct qla_hw_data *ha = tgt->ha;
1491 unsigned long flags;
1492
1493 mutex_lock(&ha->optrom_mutex);
1494 mutex_lock(&qla_tgt_mutex);
1495
1496 if (tgt->tgt_stop || tgt->tgt_stopped) {
1497 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1498 "Already in tgt->tgt_stop or tgt_stopped state\n");
1499 mutex_unlock(&qla_tgt_mutex);
1500 mutex_unlock(&ha->optrom_mutex);
1501 return -EPERM;
1502 }
1503
1504 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1505 vha->host_no, vha);
1506 /*
1507 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1508 * Lock is needed, because we still can get an incoming packet.
1509 */
1510 mutex_lock(&vha->vha_tgt.tgt_mutex);
1511 tgt->tgt_stop = 1;
1512 qlt_clear_tgt_db(tgt);
1513 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1514 mutex_unlock(&qla_tgt_mutex);
1515
1516 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1517 "Waiting for sess works (tgt %p)", tgt);
1518 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1519 while (!list_empty(&tgt->sess_works_list)) {
1520 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1521 flush_scheduled_work();
1522 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1523 }
1524 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1525
1526 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1527 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
1528
1529 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1530
1531 /* Big hammer */
1532 if (!ha->flags.host_shutting_down &&
1533 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
1534 qlt_disable_vha(vha);
1535
1536 /* Wait for sessions to clear out (just in case) */
1537 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1538 mutex_unlock(&ha->optrom_mutex);
1539
1540 return 0;
1541 }
1542 EXPORT_SYMBOL(qlt_stop_phase1);
1543
1544 /* Called by tcm_qla2xxx configfs code */
1545 void qlt_stop_phase2(struct qla_tgt *tgt)
1546 {
1547 scsi_qla_host_t *vha = tgt->vha;
1548
1549 if (tgt->tgt_stopped) {
1550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1551 "Already in tgt->tgt_stopped state\n");
1552 dump_stack();
1553 return;
1554 }
1555 if (!tgt->tgt_stop) {
1556 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1557 "%s: phase1 stop is not completed\n", __func__);
1558 dump_stack();
1559 return;
1560 }
1561
1562 mutex_lock(&vha->vha_tgt.tgt_mutex);
1563 tgt->tgt_stop = 0;
1564 tgt->tgt_stopped = 1;
1565 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1566
1567 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
1568 tgt);
1569
1570 switch (vha->qlini_mode) {
1571 case QLA2XXX_INI_MODE_EXCLUSIVE:
1572 vha->flags.online = 1;
1573 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1574 break;
1575 default:
1576 break;
1577 }
1578 }
1579 EXPORT_SYMBOL(qlt_stop_phase2);
1580
1581 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1582 static void qlt_release(struct qla_tgt *tgt)
1583 {
1584 scsi_qla_host_t *vha = tgt->vha;
1585 void *node;
1586 u64 key = 0;
1587 u16 i;
1588 struct qla_qpair_hint *h;
1589 struct qla_hw_data *ha = vha->hw;
1590
1591 if (!tgt->tgt_stop && !tgt->tgt_stopped)
1592 qlt_stop_phase1(tgt);
1593
1594 if (!tgt->tgt_stopped)
1595 qlt_stop_phase2(tgt);
1596
1597 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1598 unsigned long flags;
1599
1600 h = &tgt->qphints[i];
1601 if (h->qpair) {
1602 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1603 list_del(&h->hint_elem);
1604 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1605 h->qpair = NULL;
1606 }
1607 }
1608 kfree(tgt->qphints);
1609 mutex_lock(&qla_tgt_mutex);
1610 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1611 mutex_unlock(&qla_tgt_mutex);
1612
1613 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1614 btree_remove64(&tgt->lun_qpair_map, key);
1615
1616 btree_destroy64(&tgt->lun_qpair_map);
1617
1618 if (vha->vp_idx)
1619 if (ha->tgt.tgt_ops &&
1620 ha->tgt.tgt_ops->remove_target &&
1621 vha->vha_tgt.target_lport_ptr)
1622 ha->tgt.tgt_ops->remove_target(vha);
1623
1624 vha->vha_tgt.qla_tgt = NULL;
1625
1626 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1627 "Release of tgt %p finished\n", tgt);
1628
1629 kfree(tgt);
1630 }
1631
1632 /* ha->hardware_lock supposed to be held on entry */
1633 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1634 const void *param, unsigned int param_size)
1635 {
1636 struct qla_tgt_sess_work_param *prm;
1637 unsigned long flags;
1638
1639 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1640 if (!prm) {
1641 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1642 "qla_target(%d): Unable to create session "
1643 "work, command will be refused", 0);
1644 return -ENOMEM;
1645 }
1646
1647 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1648 "Scheduling work (type %d, prm %p)"
1649 " to find session for param %p (size %d, tgt %p)\n",
1650 type, prm, param, param_size, tgt);
1651
1652 prm->type = type;
1653 memcpy(&prm->tm_iocb, param, param_size);
1654
1655 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1656 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1657 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1658
1659 schedule_work(&tgt->sess_work);
1660
1661 return 0;
1662 }
1663
1664 /*
1665 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1666 */
1667 static void qlt_send_notify_ack(struct qla_qpair *qpair,
1668 struct imm_ntfy_from_isp *ntfy,
1669 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1670 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1671 {
1672 struct scsi_qla_host *vha = qpair->vha;
1673 struct qla_hw_data *ha = vha->hw;
1674 request_t *pkt;
1675 struct nack_to_isp *nack;
1676
1677 if (!ha->flags.fw_started)
1678 return;
1679
1680 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1681
1682 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
1683 if (!pkt) {
1684 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1685 "qla_target(%d): %s failed: unable to allocate "
1686 "request packet\n", vha->vp_idx, __func__);
1687 return;
1688 }
1689
1690 if (vha->vha_tgt.qla_tgt != NULL)
1691 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1692
1693 pkt->entry_type = NOTIFY_ACK_TYPE;
1694 pkt->entry_count = 1;
1695
1696 nack = (struct nack_to_isp *)pkt;
1697 nack->ox_id = ntfy->ox_id;
1698
1699 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
1700 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1701 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1702 nack->u.isp24.flags = ntfy->u.isp24.flags &
1703 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
1704 }
1705 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1706 nack->u.isp24.status = ntfy->u.isp24.status;
1707 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1708 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1709 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1710 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1711 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1712 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1713 nack->u.isp24.srr_reject_code = srr_reject_code;
1714 nack->u.isp24.srr_reject_code_expl = srr_explan;
1715 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1716
1717 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1718 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1719 vha->vp_idx, nack->u.isp24.status);
1720
1721 /* Memory Barrier */
1722 wmb();
1723 qla2x00_start_iocbs(vha, qpair->req);
1724 }
1725
1726 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd)
1727 {
1728 struct scsi_qla_host *vha = mcmd->vha;
1729 struct qla_hw_data *ha = vha->hw;
1730 struct abts_resp_to_24xx *resp;
1731 __le32 f_ctl;
1732 uint32_t h;
1733 uint8_t *p;
1734 int rc;
1735 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts;
1736 struct qla_qpair *qpair = mcmd->qpair;
1737
1738 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1739 "Sending task mgmt ABTS response (ha=%p, status=%x)\n",
1740 ha, mcmd->fc_tm_rsp);
1741
1742 rc = qlt_check_reserve_free_req(qpair, 1);
1743 if (rc) {
1744 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1745 "qla_target(%d): %s failed: unable to allocate request packet\n",
1746 vha->vp_idx, __func__);
1747 return -EAGAIN;
1748 }
1749
1750 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr;
1751 memset(resp, 0, sizeof(*resp));
1752
1753 h = qlt_make_handle(qpair);
1754 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1755 /*
1756 * CTIO type 7 from the firmware doesn't provide a way to
1757 * know the initiator's LOOP ID, hence we can't find
1758 * the session and, so, the command.
1759 */
1760 return -EAGAIN;
1761 } else {
1762 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd;
1763 }
1764
1765 resp->handle = make_handle(qpair->req->id, h);
1766 resp->entry_type = ABTS_RESP_24XX;
1767 resp->entry_count = 1;
1768 resp->nport_handle = abts->nport_handle;
1769 resp->vp_index = vha->vp_idx;
1770 resp->sof_type = abts->sof_type;
1771 resp->exchange_address = abts->exchange_address;
1772 resp->fcp_hdr_le = abts->fcp_hdr_le;
1773 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1774 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1775 F_CTL_SEQ_INITIATIVE);
1776 p = (uint8_t *)&f_ctl;
1777 resp->fcp_hdr_le.f_ctl[0] = *p++;
1778 resp->fcp_hdr_le.f_ctl[1] = *p++;
1779 resp->fcp_hdr_le.f_ctl[2] = *p;
1780
1781 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1782 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
1783
1784 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1785 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) {
1786 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1787 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1788 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1789 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
1790 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1791 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1792 } else {
1793 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1794 resp->payload.ba_rjt.reason_code =
1795 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1796 /* Other bytes are zero */
1797 }
1798
1799 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1800
1801 /* Memory Barrier */
1802 wmb();
1803 if (qpair->reqq_start_iocbs)
1804 qpair->reqq_start_iocbs(qpair);
1805 else
1806 qla2x00_start_iocbs(vha, qpair->req);
1807
1808 return rc;
1809 }
1810
1811 /*
1812 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1813 */
1814 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
1815 struct abts_recv_from_24xx *abts, uint32_t status,
1816 bool ids_reversed)
1817 {
1818 struct scsi_qla_host *vha = qpair->vha;
1819 struct qla_hw_data *ha = vha->hw;
1820 struct abts_resp_to_24xx *resp;
1821 __le32 f_ctl;
1822 uint8_t *p;
1823
1824 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1825 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1826 ha, abts, status);
1827
1828 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1829 NULL);
1830 if (!resp) {
1831 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1832 "qla_target(%d): %s failed: unable to allocate "
1833 "request packet", vha->vp_idx, __func__);
1834 return;
1835 }
1836
1837 resp->entry_type = ABTS_RESP_24XX;
1838 resp->handle = QLA_TGT_SKIP_HANDLE;
1839 resp->entry_count = 1;
1840 resp->nport_handle = abts->nport_handle;
1841 resp->vp_index = vha->vp_idx;
1842 resp->sof_type = abts->sof_type;
1843 resp->exchange_address = abts->exchange_address;
1844 resp->fcp_hdr_le = abts->fcp_hdr_le;
1845 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1846 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1847 F_CTL_SEQ_INITIATIVE);
1848 p = (uint8_t *)&f_ctl;
1849 resp->fcp_hdr_le.f_ctl[0] = *p++;
1850 resp->fcp_hdr_le.f_ctl[1] = *p++;
1851 resp->fcp_hdr_le.f_ctl[2] = *p;
1852 if (ids_reversed) {
1853 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id;
1854 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id;
1855 } else {
1856 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1857 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
1858 }
1859 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1860 if (status == FCP_TMF_CMPL) {
1861 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1862 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1863 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1864 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
1865 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1866 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1867 } else {
1868 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1869 resp->payload.ba_rjt.reason_code =
1870 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1871 /* Other bytes are zero */
1872 }
1873
1874 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1875
1876 /* Memory Barrier */
1877 wmb();
1878 if (qpair->reqq_start_iocbs)
1879 qpair->reqq_start_iocbs(qpair);
1880 else
1881 qla2x00_start_iocbs(vha, qpair->req);
1882 }
1883
1884 /*
1885 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1886 */
1887 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1888 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd)
1889 {
1890 struct ctio7_to_24xx *ctio;
1891 u16 tmp;
1892 struct abts_recv_from_24xx *entry;
1893
1894 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL);
1895 if (ctio == NULL) {
1896 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1897 "qla_target(%d): %s failed: unable to allocate "
1898 "request packet\n", vha->vp_idx, __func__);
1899 return;
1900 }
1901
1902 if (mcmd)
1903 /* abts from remote port */
1904 entry = &mcmd->orig_iocb.abts;
1905 else
1906 /* abts from this driver. */
1907 entry = (struct abts_recv_from_24xx *)pkt;
1908
1909 /*
1910 * We've got on entrance firmware's response on by us generated
1911 * ABTS response. So, in it ID fields are reversed.
1912 */
1913
1914 ctio->entry_type = CTIO_TYPE7;
1915 ctio->entry_count = 1;
1916 ctio->nport_handle = entry->nport_handle;
1917 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1918 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1919 ctio->vp_index = vha->vp_idx;
1920 ctio->exchange_addr = entry->exchange_addr_to_abort;
1921 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
1922
1923 if (mcmd) {
1924 ctio->initiator_id = entry->fcp_hdr_le.s_id;
1925
1926 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID)
1927 tmp |= (mcmd->abort_io_attr << 9);
1928 else if (qpair->retry_term_cnt & 1)
1929 tmp |= (0x4 << 9);
1930 } else {
1931 ctio->initiator_id = entry->fcp_hdr_le.d_id;
1932
1933 if (qpair->retry_term_cnt & 1)
1934 tmp |= (0x4 << 9);
1935 }
1936 ctio->u.status1.flags = cpu_to_le16(tmp);
1937 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1938
1939 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1940 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n",
1941 le16_to_cpu(ctio->u.status1.flags),
1942 le16_to_cpu(ctio->u.status1.ox_id),
1943 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0);
1944
1945 /* Memory Barrier */
1946 wmb();
1947 if (qpair->reqq_start_iocbs)
1948 qpair->reqq_start_iocbs(qpair);
1949 else
1950 qla2x00_start_iocbs(vha, qpair->req);
1951
1952 if (mcmd)
1953 qlt_build_abts_resp_iocb(mcmd);
1954 else
1955 qlt_24xx_send_abts_resp(qpair,
1956 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true);
1957
1958 }
1959
1960 /* drop cmds for the given lun
1961 * XXX only looks for cmds on the port through which lun reset was recieved
1962 * XXX does not go through the list of other port (which may have cmds
1963 * for the same lun)
1964 */
1965 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id)
1966 {
1967 struct qla_tgt_sess_op *op;
1968 struct qla_tgt_cmd *cmd;
1969 uint32_t key;
1970 unsigned long flags;
1971
1972 key = sid_to_key(s_id);
1973 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1974 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1975 uint32_t op_key;
1976 u64 op_lun;
1977
1978 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1979 op_lun = scsilun_to_int(
1980 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1981 if (op_key == key && op_lun == lun)
1982 op->aborted = true;
1983 }
1984
1985 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1986 uint32_t op_key;
1987 u64 op_lun;
1988
1989 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1990 op_lun = scsilun_to_int(
1991 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1992 if (op_key == key && op_lun == lun)
1993 op->aborted = true;
1994 }
1995
1996 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1997 uint32_t cmd_key;
1998 u64 cmd_lun;
1999
2000 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
2001 cmd_lun = scsilun_to_int(
2002 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
2003 if (cmd_key == key && cmd_lun == lun)
2004 cmd->aborted = 1;
2005 }
2006 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
2007 }
2008
2009 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha,
2010 uint64_t unpacked_lun)
2011 {
2012 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2013 struct qla_qpair_hint *h = NULL;
2014
2015 if (vha->flags.qpairs_available) {
2016 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun);
2017 if (!h)
2018 h = &tgt->qphints[0];
2019 } else {
2020 h = &tgt->qphints[0];
2021 }
2022
2023 return h;
2024 }
2025
2026 static void qlt_do_tmr_work(struct work_struct *work)
2027 {
2028 struct qla_tgt_mgmt_cmd *mcmd =
2029 container_of(work, struct qla_tgt_mgmt_cmd, work);
2030 struct qla_hw_data *ha = mcmd->vha->hw;
2031 int rc;
2032 uint32_t tag;
2033 unsigned long flags;
2034
2035 switch (mcmd->tmr_func) {
2036 case QLA_TGT_ABTS:
2037 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort);
2038 break;
2039 default:
2040 tag = 0;
2041 break;
2042 }
2043
2044 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun,
2045 mcmd->tmr_func, tag);
2046
2047 if (rc != 0) {
2048 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags);
2049 switch (mcmd->tmr_func) {
2050 case QLA_TGT_ABTS:
2051 mcmd->fc_tm_rsp = FCP_TMF_REJECTED;
2052 qlt_build_abts_resp_iocb(mcmd);
2053 break;
2054 case QLA_TGT_LUN_RESET:
2055 case QLA_TGT_CLEAR_TS:
2056 case QLA_TGT_ABORT_TS:
2057 case QLA_TGT_CLEAR_ACA:
2058 case QLA_TGT_TARGET_RESET:
2059 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio,
2060 qla_sam_status);
2061 break;
2062
2063 case QLA_TGT_ABORT_ALL:
2064 case QLA_TGT_NEXUS_LOSS_SESS:
2065 case QLA_TGT_NEXUS_LOSS:
2066 qlt_send_notify_ack(mcmd->qpair,
2067 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2068 break;
2069 }
2070 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags);
2071
2072 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052,
2073 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2074 mcmd->vha->vp_idx, rc);
2075 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2076 }
2077 }
2078
2079 /* ha->hardware_lock supposed to be held on entry */
2080 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2081 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2082 {
2083 struct qla_hw_data *ha = vha->hw;
2084 struct qla_tgt_mgmt_cmd *mcmd;
2085 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
2086 struct qla_tgt_cmd *abort_cmd;
2087
2088 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
2089 "qla_target(%d): task abort (tag=%d)\n",
2090 vha->vp_idx, abts->exchange_addr_to_abort);
2091
2092 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2093 if (mcmd == NULL) {
2094 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
2095 "qla_target(%d): %s: Allocation of ABORT cmd failed",
2096 vha->vp_idx, __func__);
2097 return -ENOMEM;
2098 }
2099 memset(mcmd, 0, sizeof(*mcmd));
2100 mcmd->cmd_type = TYPE_TGT_TMCMD;
2101 mcmd->sess = sess;
2102 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
2103 mcmd->reset_count = ha->base_qpair->chip_reset;
2104 mcmd->tmr_func = QLA_TGT_ABTS;
2105 mcmd->qpair = h->qpair;
2106 mcmd->vha = vha;
2107
2108 /*
2109 * LUN is looked up by target-core internally based on the passed
2110 * abts->exchange_addr_to_abort tag.
2111 */
2112 mcmd->se_cmd.cpuid = h->cpuid;
2113
2114 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess,
2115 le32_to_cpu(abts->exchange_addr_to_abort));
2116 if (!abort_cmd)
2117 return -EIO;
2118 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun;
2119
2120 if (abort_cmd->qpair) {
2121 mcmd->qpair = abort_cmd->qpair;
2122 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid;
2123 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr;
2124 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID;
2125 }
2126
2127 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
2128 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work);
2129
2130 return 0;
2131 }
2132
2133 /*
2134 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2135 */
2136 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2137 struct abts_recv_from_24xx *abts)
2138 {
2139 struct qla_hw_data *ha = vha->hw;
2140 struct fc_port *sess;
2141 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort);
2142 be_id_t s_id;
2143 int rc;
2144 unsigned long flags;
2145
2146 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
2147 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
2148 "qla_target(%d): ABTS: Abort Sequence not "
2149 "supported\n", vha->vp_idx);
2150 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2151 false);
2152 return;
2153 }
2154
2155 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2156 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2157 "qla_target(%d): ABTS: Unknown Exchange "
2158 "Address received\n", vha->vp_idx);
2159 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2160 false);
2161 return;
2162 }
2163
2164 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2165 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2166 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain,
2167 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag,
2168 le32_to_cpu(abts->fcp_hdr_le.parameter));
2169
2170 s_id = le_id_to_be(abts->fcp_hdr_le.s_id);
2171
2172 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2173 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2174 if (!sess) {
2175 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2176 "qla_target(%d): task abort for non-existent session\n",
2177 vha->vp_idx);
2178 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2179
2180 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2181 false);
2182 return;
2183 }
2184 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2185
2186
2187 if (sess->deleted) {
2188 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2189 false);
2190 return;
2191 }
2192
2193 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2194 if (rc != 0) {
2195 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2196 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2197 vha->vp_idx, rc);
2198 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2199 false);
2200 return;
2201 }
2202 }
2203
2204 /*
2205 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2206 */
2207 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2208 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2209 {
2210 struct scsi_qla_host *ha = mcmd->vha;
2211 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2212 struct ctio7_to_24xx *ctio;
2213 uint16_t temp;
2214
2215 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2216 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2217 ha, atio, resp_code);
2218
2219
2220 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2221 if (ctio == NULL) {
2222 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2223 "qla_target(%d): %s failed: unable to allocate "
2224 "request packet\n", ha->vp_idx, __func__);
2225 return;
2226 }
2227
2228 ctio->entry_type = CTIO_TYPE7;
2229 ctio->entry_count = 1;
2230 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2231 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id);
2232 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2233 ctio->vp_index = ha->vp_idx;
2234 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2235 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2236 temp = (atio->u.isp24.attr << 9)|
2237 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2238 ctio->u.status1.flags = cpu_to_le16(temp);
2239 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2240 ctio->u.status1.ox_id = cpu_to_le16(temp);
2241 ctio->u.status1.scsi_status =
2242 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2243 ctio->u.status1.response_len = cpu_to_le16(8);
2244 ctio->u.status1.sense_data[0] = resp_code;
2245
2246 /* Memory Barrier */
2247 wmb();
2248 if (qpair->reqq_start_iocbs)
2249 qpair->reqq_start_iocbs(qpair);
2250 else
2251 qla2x00_start_iocbs(ha, qpair->req);
2252 }
2253
2254 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2255 {
2256 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2257 }
2258 EXPORT_SYMBOL(qlt_free_mcmd);
2259
2260 /*
2261 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2262 * reacquire
2263 */
2264 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
2265 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2266 {
2267 struct atio_from_isp *atio = &cmd->atio;
2268 struct ctio7_to_24xx *ctio;
2269 uint16_t temp;
2270 struct scsi_qla_host *vha = cmd->vha;
2271
2272 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2273 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2274 "sense_key=%02x, asc=%02x, ascq=%02x",
2275 vha, atio, scsi_status, sense_key, asc, ascq);
2276
2277 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2278 if (!ctio) {
2279 ql_dbg(ql_dbg_async, vha, 0x3067,
2280 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2281 vha->host_no, __func__);
2282 goto out;
2283 }
2284
2285 ctio->entry_type = CTIO_TYPE7;
2286 ctio->entry_count = 1;
2287 ctio->handle = QLA_TGT_SKIP_HANDLE;
2288 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id);
2289 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2290 ctio->vp_index = vha->vp_idx;
2291 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2292 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2293 temp = (atio->u.isp24.attr << 9) |
2294 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2295 ctio->u.status1.flags = cpu_to_le16(temp);
2296 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2297 ctio->u.status1.ox_id = cpu_to_le16(temp);
2298 ctio->u.status1.scsi_status =
2299 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2300 ctio->u.status1.response_len = cpu_to_le16(18);
2301 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2302
2303 if (ctio->u.status1.residual != 0)
2304 ctio->u.status1.scsi_status |=
2305 cpu_to_le16(SS_RESIDUAL_UNDER);
2306
2307 /* Fixed format sense data. */
2308 ctio->u.status1.sense_data[0] = 0x70;
2309 ctio->u.status1.sense_data[2] = sense_key;
2310 /* Additional sense length */
2311 ctio->u.status1.sense_data[7] = 0xa;
2312 /* ASC and ASCQ */
2313 ctio->u.status1.sense_data[12] = asc;
2314 ctio->u.status1.sense_data[13] = ascq;
2315
2316 /* Memory Barrier */
2317 wmb();
2318
2319 if (qpair->reqq_start_iocbs)
2320 qpair->reqq_start_iocbs(qpair);
2321 else
2322 qla2x00_start_iocbs(vha, qpair->req);
2323
2324 out:
2325 return;
2326 }
2327
2328 /* callback from target fabric module code */
2329 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2330 {
2331 struct scsi_qla_host *vha = mcmd->sess->vha;
2332 struct qla_hw_data *ha = vha->hw;
2333 unsigned long flags;
2334 struct qla_qpair *qpair = mcmd->qpair;
2335 bool free_mcmd = true;
2336
2337 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2338 "TM response mcmd (%p) status %#x state %#x",
2339 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2340
2341 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2342
2343 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
2344 /*
2345 * Either the port is not online or this request was from
2346 * previous life, just abort the processing.
2347 */
2348 ql_dbg(ql_dbg_async, vha, 0xe100,
2349 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2350 vha->flags.online, qla2x00_reset_active(vha),
2351 mcmd->reset_count, qpair->chip_reset);
2352 ha->tgt.tgt_ops->free_mcmd(mcmd);
2353 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2354 return;
2355 }
2356
2357 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2358 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) {
2359 case ELS_LOGO:
2360 case ELS_PRLO:
2361 case ELS_TPRLO:
2362 ql_dbg(ql_dbg_disc, vha, 0x2106,
2363 "TM response logo %8phC status %#x state %#x",
2364 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2365 mcmd->flags);
2366 qlt_schedule_sess_for_deletion(mcmd->sess);
2367 break;
2368 default:
2369 qlt_send_notify_ack(vha->hw->base_qpair,
2370 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2371 break;
2372 }
2373 } else {
2374 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) {
2375 qlt_build_abts_resp_iocb(mcmd);
2376 free_mcmd = false;
2377 } else
2378 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2379 mcmd->fc_tm_rsp);
2380 }
2381 /*
2382 * Make the callback for ->free_mcmd() to queue_work() and invoke
2383 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2384 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2385 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2386 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2387 * qlt_xmit_tm_rsp() returns here..
2388 */
2389 if (free_mcmd)
2390 ha->tgt.tgt_ops->free_mcmd(mcmd);
2391
2392 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2393 }
2394 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2395
2396 /* No locks */
2397 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2398 {
2399 struct qla_tgt_cmd *cmd = prm->cmd;
2400
2401 BUG_ON(cmd->sg_cnt == 0);
2402
2403 prm->sg = (struct scatterlist *)cmd->sg;
2404 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg,
2405 cmd->sg_cnt, cmd->dma_data_direction);
2406 if (unlikely(prm->seg_cnt == 0))
2407 goto out_err;
2408
2409 prm->cmd->sg_mapped = 1;
2410
2411 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2412 /*
2413 * If greater than four sg entries then we need to allocate
2414 * the continuation entries
2415 */
2416 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
2417 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2418 QLA_TGT_DATASEGS_PER_CMD_24XX,
2419 QLA_TGT_DATASEGS_PER_CONT_24XX);
2420 } else {
2421 /* DIF */
2422 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2423 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2424 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2425 prm->tot_dsds = prm->seg_cnt;
2426 } else
2427 prm->tot_dsds = prm->seg_cnt;
2428
2429 if (cmd->prot_sg_cnt) {
2430 prm->prot_sg = cmd->prot_sg;
2431 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev,
2432 cmd->prot_sg, cmd->prot_sg_cnt,
2433 cmd->dma_data_direction);
2434 if (unlikely(prm->prot_seg_cnt == 0))
2435 goto out_err;
2436
2437 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2438 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2439 /* Dif Bundling not support here */
2440 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2441 cmd->blk_sz);
2442 prm->tot_dsds += prm->prot_seg_cnt;
2443 } else
2444 prm->tot_dsds += prm->prot_seg_cnt;
2445 }
2446 }
2447
2448 return 0;
2449
2450 out_err:
2451 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2452 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2453 0, prm->cmd->sg_cnt);
2454 return -1;
2455 }
2456
2457 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2458 {
2459 struct qla_hw_data *ha;
2460 struct qla_qpair *qpair;
2461
2462 if (!cmd->sg_mapped)
2463 return;
2464
2465 qpair = cmd->qpair;
2466
2467 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt,
2468 cmd->dma_data_direction);
2469 cmd->sg_mapped = 0;
2470
2471 if (cmd->prot_sg_cnt)
2472 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt,
2473 cmd->dma_data_direction);
2474
2475 if (!cmd->ctx)
2476 return;
2477 ha = vha->hw;
2478 if (cmd->ctx_dsd_alloced)
2479 qla2x00_clean_dsd_pool(ha, cmd->ctx);
2480
2481 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2482 }
2483
2484 static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2485 uint32_t req_cnt)
2486 {
2487 uint32_t cnt;
2488 struct req_que *req = qpair->req;
2489
2490 if (req->cnt < (req_cnt + 2)) {
2491 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2492 rd_reg_dword_relaxed(req->req_q_out));
2493
2494 if (req->ring_index < cnt)
2495 req->cnt = cnt - req->ring_index;
2496 else
2497 req->cnt = req->length - (req->ring_index - cnt);
2498
2499 if (unlikely(req->cnt < (req_cnt + 2)))
2500 return -EAGAIN;
2501 }
2502
2503 req->cnt -= req_cnt;
2504
2505 return 0;
2506 }
2507
2508 /*
2509 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2510 */
2511 static inline void *qlt_get_req_pkt(struct req_que *req)
2512 {
2513 /* Adjust ring index. */
2514 req->ring_index++;
2515 if (req->ring_index == req->length) {
2516 req->ring_index = 0;
2517 req->ring_ptr = req->ring;
2518 } else {
2519 req->ring_ptr++;
2520 }
2521 return (cont_entry_t *)req->ring_ptr;
2522 }
2523
2524 /* ha->hardware_lock supposed to be held on entry */
2525 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2526 {
2527 uint32_t h;
2528 int index;
2529 uint8_t found = 0;
2530 struct req_que *req = qpair->req;
2531
2532 h = req->current_outstanding_cmd;
2533
2534 for (index = 1; index < req->num_outstanding_cmds; index++) {
2535 h++;
2536 if (h == req->num_outstanding_cmds)
2537 h = 1;
2538
2539 if (h == QLA_TGT_SKIP_HANDLE)
2540 continue;
2541
2542 if (!req->outstanding_cmds[h]) {
2543 found = 1;
2544 break;
2545 }
2546 }
2547
2548 if (found) {
2549 req->current_outstanding_cmd = h;
2550 } else {
2551 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2552 "qla_target(%d): Ran out of empty cmd slots\n",
2553 qpair->vha->vp_idx);
2554 h = QLA_TGT_NULL_HANDLE;
2555 }
2556
2557 return h;
2558 }
2559
2560 /* ha->hardware_lock supposed to be held on entry */
2561 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2562 struct qla_tgt_prm *prm)
2563 {
2564 uint32_t h;
2565 struct ctio7_to_24xx *pkt;
2566 struct atio_from_isp *atio = &prm->cmd->atio;
2567 uint16_t temp;
2568
2569 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2570 prm->pkt = pkt;
2571 memset(pkt, 0, sizeof(*pkt));
2572
2573 pkt->entry_type = CTIO_TYPE7;
2574 pkt->entry_count = (uint8_t)prm->req_cnt;
2575 pkt->vp_index = prm->cmd->vp_idx;
2576
2577 h = qlt_make_handle(qpair);
2578 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2579 /*
2580 * CTIO type 7 from the firmware doesn't provide a way to
2581 * know the initiator's LOOP ID, hence we can't find
2582 * the session and, so, the command.
2583 */
2584 return -EAGAIN;
2585 } else
2586 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2587
2588 pkt->handle = make_handle(qpair->req->id, h);
2589 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2590 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2591 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2592 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2593 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2594 temp = atio->u.isp24.attr << 9;
2595 pkt->u.status0.flags |= cpu_to_le16(temp);
2596 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2597 pkt->u.status0.ox_id = cpu_to_le16(temp);
2598 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2599
2600 return 0;
2601 }
2602
2603 /*
2604 * ha->hardware_lock supposed to be held on entry. We have already made sure
2605 * that there is sufficient amount of request entries to not drop it.
2606 */
2607 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2608 {
2609 int cnt;
2610 struct dsd64 *cur_dsd;
2611
2612 /* Build continuation packets */
2613 while (prm->seg_cnt > 0) {
2614 cont_a64_entry_t *cont_pkt64 =
2615 (cont_a64_entry_t *)qlt_get_req_pkt(
2616 prm->cmd->qpair->req);
2617
2618 /*
2619 * Make sure that from cont_pkt64 none of
2620 * 64-bit specific fields used for 32-bit
2621 * addressing. Cast to (cont_entry_t *) for
2622 * that.
2623 */
2624
2625 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2626
2627 cont_pkt64->entry_count = 1;
2628 cont_pkt64->sys_define = 0;
2629
2630 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2631 cur_dsd = cont_pkt64->dsd;
2632
2633 /* Load continuation entry data segments */
2634 for (cnt = 0;
2635 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2636 cnt++, prm->seg_cnt--) {
2637 append_dsd64(&cur_dsd, prm->sg);
2638 prm->sg = sg_next(prm->sg);
2639 }
2640 }
2641 }
2642
2643 /*
2644 * ha->hardware_lock supposed to be held on entry. We have already made sure
2645 * that there is sufficient amount of request entries to not drop it.
2646 */
2647 static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2648 {
2649 int cnt;
2650 struct dsd64 *cur_dsd;
2651 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2652
2653 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2654
2655 /* Setup packet address segment pointer */
2656 cur_dsd = &pkt24->u.status0.dsd;
2657
2658 /* Set total data segment count */
2659 if (prm->seg_cnt)
2660 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2661
2662 if (prm->seg_cnt == 0) {
2663 /* No data transfer */
2664 cur_dsd->address = 0;
2665 cur_dsd->length = 0;
2666 return;
2667 }
2668
2669 /* If scatter gather */
2670
2671 /* Load command entry data segments */
2672 for (cnt = 0;
2673 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2674 cnt++, prm->seg_cnt--) {
2675 append_dsd64(&cur_dsd, prm->sg);
2676 prm->sg = sg_next(prm->sg);
2677 }
2678
2679 qlt_load_cont_data_segments(prm);
2680 }
2681
2682 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2683 {
2684 return cmd->bufflen > 0;
2685 }
2686
2687 static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2688 {
2689 struct qla_tgt_cmd *cmd;
2690 struct scsi_qla_host *vha;
2691
2692 /* asc 0x10=dif error */
2693 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2694 cmd = prm->cmd;
2695 vha = cmd->vha;
2696 /* ASCQ */
2697 switch (prm->sense_buffer[13]) {
2698 case 1:
2699 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
2700 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2701 "se_cmd=%p tag[%x]",
2702 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2703 cmd->atio.u.isp24.exchange_addr);
2704 break;
2705 case 2:
2706 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
2707 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2708 "se_cmd=%p tag[%x]",
2709 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2710 cmd->atio.u.isp24.exchange_addr);
2711 break;
2712 case 3:
2713 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
2714 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2715 "se_cmd=%p tag[%x]",
2716 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2717 cmd->atio.u.isp24.exchange_addr);
2718 break;
2719 default:
2720 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
2721 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2722 "se_cmd=%p tag[%x]",
2723 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2724 cmd->atio.u.isp24.exchange_addr);
2725 break;
2726 }
2727 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
2728 }
2729 }
2730
2731 /*
2732 * Called without ha->hardware_lock held
2733 */
2734 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2735 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2736 uint32_t *full_req_cnt)
2737 {
2738 struct se_cmd *se_cmd = &cmd->se_cmd;
2739 struct qla_qpair *qpair = cmd->qpair;
2740
2741 prm->cmd = cmd;
2742 prm->tgt = cmd->tgt;
2743 prm->pkt = NULL;
2744 prm->rq_result = scsi_status;
2745 prm->sense_buffer = &cmd->sense_buffer[0];
2746 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2747 prm->sg = NULL;
2748 prm->seg_cnt = -1;
2749 prm->req_cnt = 1;
2750 prm->residual = 0;
2751 prm->add_status_pkt = 0;
2752 prm->prot_sg = NULL;
2753 prm->prot_seg_cnt = 0;
2754 prm->tot_dsds = 0;
2755
2756 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2757 if (qlt_pci_map_calc_cnt(prm) != 0)
2758 return -EAGAIN;
2759 }
2760
2761 *full_req_cnt = prm->req_cnt;
2762
2763 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2764 prm->residual = se_cmd->residual_count;
2765 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
2766 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2767 prm->residual, se_cmd->tag,
2768 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2769 cmd->bufflen, prm->rq_result);
2770 prm->rq_result |= SS_RESIDUAL_UNDER;
2771 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2772 prm->residual = se_cmd->residual_count;
2773 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
2774 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2775 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2776 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2777 prm->rq_result |= SS_RESIDUAL_OVER;
2778 }
2779
2780 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2781 /*
2782 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2783 * ignored in *xmit_response() below
2784 */
2785 if (qlt_has_data(cmd)) {
2786 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2787 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2788 (prm->rq_result != 0))) {
2789 prm->add_status_pkt = 1;
2790 (*full_req_cnt)++;
2791 }
2792 }
2793 }
2794
2795 return 0;
2796 }
2797
2798 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2799 int sending_sense)
2800 {
2801 if (cmd->qpair->enable_class_2)
2802 return 0;
2803
2804 if (sending_sense)
2805 return cmd->conf_compl_supported;
2806 else
2807 return cmd->qpair->enable_explicit_conf &&
2808 cmd->conf_compl_supported;
2809 }
2810
2811 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2812 struct qla_tgt_prm *prm)
2813 {
2814 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2815 (uint32_t)sizeof(ctio->u.status1.sense_data));
2816 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2817 if (qlt_need_explicit_conf(prm->cmd, 0)) {
2818 ctio->u.status0.flags |= cpu_to_le16(
2819 CTIO7_FLAGS_EXPLICIT_CONFORM |
2820 CTIO7_FLAGS_CONFORM_REQ);
2821 }
2822 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2823 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2824 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2825 int i;
2826
2827 if (qlt_need_explicit_conf(prm->cmd, 1)) {
2828 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2829 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2830 "Skipping EXPLICIT_CONFORM and "
2831 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2832 "non GOOD status\n");
2833 goto skip_explict_conf;
2834 }
2835 ctio->u.status1.flags |= cpu_to_le16(
2836 CTIO7_FLAGS_EXPLICIT_CONFORM |
2837 CTIO7_FLAGS_CONFORM_REQ);
2838 }
2839 skip_explict_conf:
2840 ctio->u.status1.flags &=
2841 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2842 ctio->u.status1.flags |=
2843 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2844 ctio->u.status1.scsi_status |=
2845 cpu_to_le16(SS_SENSE_LEN_VALID);
2846 ctio->u.status1.sense_length =
2847 cpu_to_le16(prm->sense_buffer_len);
2848 for (i = 0; i < prm->sense_buffer_len/4; i++) {
2849 uint32_t v;
2850
2851 v = get_unaligned_be32(
2852 &((uint32_t *)prm->sense_buffer)[i]);
2853 put_unaligned_le32(v,
2854 &((uint32_t *)ctio->u.status1.sense_data)[i]);
2855 }
2856 qlt_print_dif_err(prm);
2857
2858 } else {
2859 ctio->u.status1.flags &=
2860 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2861 ctio->u.status1.flags |=
2862 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2863 ctio->u.status1.sense_length = 0;
2864 memset(ctio->u.status1.sense_data, 0,
2865 sizeof(ctio->u.status1.sense_data));
2866 }
2867
2868 /* Sense with len > 24, is it possible ??? */
2869 }
2870
2871 static inline int
2872 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2873 {
2874 switch (se_cmd->prot_op) {
2875 case TARGET_PROT_DOUT_INSERT:
2876 case TARGET_PROT_DIN_STRIP:
2877 if (ql2xenablehba_err_chk >= 1)
2878 return 1;
2879 break;
2880 case TARGET_PROT_DOUT_PASS:
2881 case TARGET_PROT_DIN_PASS:
2882 if (ql2xenablehba_err_chk >= 2)
2883 return 1;
2884 break;
2885 case TARGET_PROT_DIN_INSERT:
2886 case TARGET_PROT_DOUT_STRIP:
2887 return 1;
2888 default:
2889 break;
2890 }
2891 return 0;
2892 }
2893
2894 static inline int
2895 qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2896 {
2897 switch (se_cmd->prot_op) {
2898 case TARGET_PROT_DIN_INSERT:
2899 case TARGET_PROT_DOUT_INSERT:
2900 case TARGET_PROT_DIN_STRIP:
2901 case TARGET_PROT_DOUT_STRIP:
2902 case TARGET_PROT_DIN_PASS:
2903 case TARGET_PROT_DOUT_PASS:
2904 return 1;
2905 default:
2906 return 0;
2907 }
2908 return 0;
2909 }
2910
2911 /*
2912 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
2913 */
2914 static void
2915 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2916 uint16_t *pfw_prot_opts)
2917 {
2918 struct se_cmd *se_cmd = &cmd->se_cmd;
2919 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2920 scsi_qla_host_t *vha = cmd->tgt->vha;
2921 struct qla_hw_data *ha = vha->hw;
2922 uint32_t t32 = 0;
2923
2924 /*
2925 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
2926 * have been immplemented by TCM, before AppTag is avail.
2927 * Look for modesense_handlers[]
2928 */
2929 ctx->app_tag = 0;
2930 ctx->app_tag_mask[0] = 0x0;
2931 ctx->app_tag_mask[1] = 0x0;
2932
2933 if (IS_PI_UNINIT_CAPABLE(ha)) {
2934 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2935 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2936 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2937 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2938 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2939 }
2940
2941 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2942
2943 switch (se_cmd->prot_type) {
2944 case TARGET_DIF_TYPE0_PROT:
2945 /*
2946 * No check for ql2xenablehba_err_chk, as it
2947 * would be an I/O error if hba tag generation
2948 * is not done.
2949 */
2950 ctx->ref_tag = cpu_to_le32(lba);
2951 /* enable ALL bytes of the ref tag */
2952 ctx->ref_tag_mask[0] = 0xff;
2953 ctx->ref_tag_mask[1] = 0xff;
2954 ctx->ref_tag_mask[2] = 0xff;
2955 ctx->ref_tag_mask[3] = 0xff;
2956 break;
2957 case TARGET_DIF_TYPE1_PROT:
2958 /*
2959 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2960 * REF tag, and 16 bit app tag.
2961 */
2962 ctx->ref_tag = cpu_to_le32(lba);
2963 if (!qla_tgt_ref_mask_check(se_cmd) ||
2964 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2965 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2966 break;
2967 }
2968 /* enable ALL bytes of the ref tag */
2969 ctx->ref_tag_mask[0] = 0xff;
2970 ctx->ref_tag_mask[1] = 0xff;
2971 ctx->ref_tag_mask[2] = 0xff;
2972 ctx->ref_tag_mask[3] = 0xff;
2973 break;
2974 case TARGET_DIF_TYPE2_PROT:
2975 /*
2976 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2977 * tag has to match LBA in CDB + N
2978 */
2979 ctx->ref_tag = cpu_to_le32(lba);
2980 if (!qla_tgt_ref_mask_check(se_cmd) ||
2981 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2982 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2983 break;
2984 }
2985 /* enable ALL bytes of the ref tag */
2986 ctx->ref_tag_mask[0] = 0xff;
2987 ctx->ref_tag_mask[1] = 0xff;
2988 ctx->ref_tag_mask[2] = 0xff;
2989 ctx->ref_tag_mask[3] = 0xff;
2990 break;
2991 case TARGET_DIF_TYPE3_PROT:
2992 /* For TYPE 3 protection: 16 bit GUARD only */
2993 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2994 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2995 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2996 break;
2997 }
2998 }
2999
3000 static inline int
3001 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
3002 {
3003 struct dsd64 *cur_dsd;
3004 uint32_t transfer_length = 0;
3005 uint32_t data_bytes;
3006 uint32_t dif_bytes;
3007 uint8_t bundling = 1;
3008 struct crc_context *crc_ctx_pkt = NULL;
3009 struct qla_hw_data *ha;
3010 struct ctio_crc2_to_fw *pkt;
3011 dma_addr_t crc_ctx_dma;
3012 uint16_t fw_prot_opts = 0;
3013 struct qla_tgt_cmd *cmd = prm->cmd;
3014 struct se_cmd *se_cmd = &cmd->se_cmd;
3015 uint32_t h;
3016 struct atio_from_isp *atio = &prm->cmd->atio;
3017 struct qla_tc_param tc;
3018 uint16_t t16;
3019 scsi_qla_host_t *vha = cmd->vha;
3020
3021 ha = vha->hw;
3022
3023 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
3024 prm->pkt = pkt;
3025 memset(pkt, 0, sizeof(*pkt));
3026
3027 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
3028 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
3029 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
3030 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
3031
3032 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
3033 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
3034 bundling = 0;
3035
3036 /* Compute dif len and adjust data len to incude protection */
3037 data_bytes = cmd->bufflen;
3038 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
3039
3040 switch (se_cmd->prot_op) {
3041 case TARGET_PROT_DIN_INSERT:
3042 case TARGET_PROT_DOUT_STRIP:
3043 transfer_length = data_bytes;
3044 if (cmd->prot_sg_cnt)
3045 data_bytes += dif_bytes;
3046 break;
3047 case TARGET_PROT_DIN_STRIP:
3048 case TARGET_PROT_DOUT_INSERT:
3049 case TARGET_PROT_DIN_PASS:
3050 case TARGET_PROT_DOUT_PASS:
3051 transfer_length = data_bytes + dif_bytes;
3052 break;
3053 default:
3054 BUG();
3055 break;
3056 }
3057
3058 if (!qlt_hba_err_chk_enabled(se_cmd))
3059 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
3060 /* HBA error checking enabled */
3061 else if (IS_PI_UNINIT_CAPABLE(ha)) {
3062 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
3063 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
3064 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
3065 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
3066 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
3067 }
3068
3069 switch (se_cmd->prot_op) {
3070 case TARGET_PROT_DIN_INSERT:
3071 case TARGET_PROT_DOUT_INSERT:
3072 fw_prot_opts |= PO_MODE_DIF_INSERT;
3073 break;
3074 case TARGET_PROT_DIN_STRIP:
3075 case TARGET_PROT_DOUT_STRIP:
3076 fw_prot_opts |= PO_MODE_DIF_REMOVE;
3077 break;
3078 case TARGET_PROT_DIN_PASS:
3079 case TARGET_PROT_DOUT_PASS:
3080 fw_prot_opts |= PO_MODE_DIF_PASS;
3081 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
3082 break;
3083 default:/* Normal Request */
3084 fw_prot_opts |= PO_MODE_DIF_PASS;
3085 break;
3086 }
3087
3088 /* ---- PKT ---- */
3089 /* Update entry type to indicate Command Type CRC_2 IOCB */
3090 pkt->entry_type = CTIO_CRC2;
3091 pkt->entry_count = 1;
3092 pkt->vp_index = cmd->vp_idx;
3093
3094 h = qlt_make_handle(qpair);
3095 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
3096 /*
3097 * CTIO type 7 from the firmware doesn't provide a way to
3098 * know the initiator's LOOP ID, hence we can't find
3099 * the session and, so, the command.
3100 */
3101 return -EAGAIN;
3102 } else
3103 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
3104
3105 pkt->handle = make_handle(qpair->req->id, h);
3106 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
3107 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
3108 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3109 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
3110 pkt->exchange_addr = atio->u.isp24.exchange_addr;
3111
3112 /* silence compile warning */
3113 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3114 pkt->ox_id = cpu_to_le16(t16);
3115
3116 t16 = (atio->u.isp24.attr << 9);
3117 pkt->flags |= cpu_to_le16(t16);
3118 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
3119
3120 /* Set transfer direction */
3121 if (cmd->dma_data_direction == DMA_TO_DEVICE)
3122 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
3123 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
3124 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
3125
3126 pkt->dseg_count = cpu_to_le16(prm->tot_dsds);
3127 /* Fibre channel byte count */
3128 pkt->transfer_length = cpu_to_le32(transfer_length);
3129
3130 /* ----- CRC context -------- */
3131
3132 /* Allocate CRC context from global pool */
3133 crc_ctx_pkt = cmd->ctx =
3134 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
3135
3136 if (!crc_ctx_pkt)
3137 goto crc_queuing_error;
3138
3139 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3140 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3141
3142 /* Set handle */
3143 crc_ctx_pkt->handle = pkt->handle;
3144
3145 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
3146
3147 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address);
3148 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW);
3149
3150 if (!bundling) {
3151 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0];
3152 } else {
3153 /*
3154 * Configure Bundling if we need to fetch interlaving
3155 * protection PCI accesses
3156 */
3157 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3158 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3159 crc_ctx_pkt->u.bundling.dseg_count =
3160 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3161 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0];
3162 }
3163
3164 /* Finish the common fields of CRC pkt */
3165 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3166 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3167 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
3168 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
3169
3170 memset((uint8_t *)&tc, 0 , sizeof(tc));
3171 tc.vha = vha;
3172 tc.blk_sz = cmd->blk_sz;
3173 tc.bufflen = cmd->bufflen;
3174 tc.sg = cmd->sg;
3175 tc.prot_sg = cmd->prot_sg;
3176 tc.ctx = crc_ctx_pkt;
3177 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
3178
3179 /* Walks data segments */
3180 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
3181
3182 if (!bundling && prm->prot_seg_cnt) {
3183 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
3184 prm->tot_dsds, &tc))
3185 goto crc_queuing_error;
3186 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
3187 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
3188 goto crc_queuing_error;
3189
3190 if (bundling && prm->prot_seg_cnt) {
3191 /* Walks dif segments */
3192 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
3193
3194 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd;
3195 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
3196 prm->prot_seg_cnt, cmd))
3197 goto crc_queuing_error;
3198 }
3199 return QLA_SUCCESS;
3200
3201 crc_queuing_error:
3202 /* Cleanup will be performed by the caller */
3203 qpair->req->outstanding_cmds[h] = NULL;
3204
3205 return QLA_FUNCTION_FAILED;
3206 }
3207
3208 /*
3209 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3210 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3211 */
3212 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3213 uint8_t scsi_status)
3214 {
3215 struct scsi_qla_host *vha = cmd->vha;
3216 struct qla_qpair *qpair = cmd->qpair;
3217 struct ctio7_to_24xx *pkt;
3218 struct qla_tgt_prm prm;
3219 uint32_t full_req_cnt = 0;
3220 unsigned long flags = 0;
3221 int res;
3222
3223 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3224 (cmd->sess && cmd->sess->deleted)) {
3225 cmd->state = QLA_TGT_STATE_PROCESSED;
3226 res = 0;
3227 goto free;
3228 }
3229
3230 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
3231 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
3232 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3233 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3234 &cmd->se_cmd, qpair->id);
3235
3236 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3237 &full_req_cnt);
3238 if (unlikely(res != 0))
3239 goto free;
3240
3241 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3242
3243 if (xmit_type == QLA_TGT_XMIT_STATUS)
3244 qpair->tgt_counters.core_qla_snd_status++;
3245 else
3246 qpair->tgt_counters.core_qla_que_buf++;
3247
3248 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
3249 /*
3250 * Either the port is not online or this request was from
3251 * previous life, just abort the processing.
3252 */
3253 cmd->state = QLA_TGT_STATE_PROCESSED;
3254 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3255 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3256 vha->flags.online, qla2x00_reset_active(vha),
3257 cmd->reset_count, qpair->chip_reset);
3258 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3259 res = 0;
3260 goto free;
3261 }
3262
3263 /* Does F/W have an IOCBs for this request */
3264 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
3265 if (unlikely(res))
3266 goto out_unmap_unlock;
3267
3268 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3269 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3270 else
3271 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3272 if (unlikely(res != 0)) {
3273 qpair->req->cnt += full_req_cnt;
3274 goto out_unmap_unlock;
3275 }
3276
3277 pkt = (struct ctio7_to_24xx *)prm.pkt;
3278
3279 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3280 pkt->u.status0.flags |=
3281 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
3282 CTIO7_FLAGS_STATUS_MODE_0);
3283
3284 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3285 qlt_load_data_segments(&prm);
3286
3287 if (prm.add_status_pkt == 0) {
3288 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3289 pkt->u.status0.scsi_status =
3290 cpu_to_le16(prm.rq_result);
3291 pkt->u.status0.residual =
3292 cpu_to_le32(prm.residual);
3293 pkt->u.status0.flags |= cpu_to_le16(
3294 CTIO7_FLAGS_SEND_STATUS);
3295 if (qlt_need_explicit_conf(cmd, 0)) {
3296 pkt->u.status0.flags |=
3297 cpu_to_le16(
3298 CTIO7_FLAGS_EXPLICIT_CONFORM |
3299 CTIO7_FLAGS_CONFORM_REQ);
3300 }
3301 }
3302
3303 } else {
3304 /*
3305 * We have already made sure that there is sufficient
3306 * amount of request entries to not drop HW lock in
3307 * req_pkt().
3308 */
3309 struct ctio7_to_24xx *ctio =
3310 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3311 qpair->req);
3312
3313 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
3314 "Building additional status packet 0x%p.\n",
3315 ctio);
3316
3317 /*
3318 * T10Dif: ctio_crc2_to_fw overlay ontop of
3319 * ctio7_to_24xx
3320 */
3321 memcpy(ctio, pkt, sizeof(*ctio));
3322 /* reset back to CTIO7 */
3323 ctio->entry_count = 1;
3324 ctio->entry_type = CTIO_TYPE7;
3325 ctio->dseg_count = 0;
3326 ctio->u.status1.flags &= ~cpu_to_le16(
3327 CTIO7_FLAGS_DATA_IN);
3328
3329 /* Real finish is ctio_m1's finish */
3330 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
3331 pkt->u.status0.flags |= cpu_to_le16(
3332 CTIO7_FLAGS_DONT_RET_CTIO);
3333
3334 /* qlt_24xx_init_ctio_to_isp will correct
3335 * all neccessary fields that's part of CTIO7.
3336 * There should be no residual of CTIO-CRC2 data.
3337 */
3338 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3339 &prm);
3340 }
3341 } else
3342 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3343
3344
3345 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
3346 cmd->cmd_sent_to_fw = 1;
3347 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3348
3349 /* Memory Barrier */
3350 wmb();
3351 if (qpair->reqq_start_iocbs)
3352 qpair->reqq_start_iocbs(qpair);
3353 else
3354 qla2x00_start_iocbs(vha, qpair->req);
3355 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3356
3357 return 0;
3358
3359 out_unmap_unlock:
3360 qlt_unmap_sg(vha, cmd);
3361 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3362
3363 free:
3364 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3365 return res;
3366 }
3367 EXPORT_SYMBOL(qlt_xmit_response);
3368
3369 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3370 {
3371 struct ctio7_to_24xx *pkt;
3372 struct scsi_qla_host *vha = cmd->vha;
3373 struct qla_tgt *tgt = cmd->tgt;
3374 struct qla_tgt_prm prm;
3375 unsigned long flags = 0;
3376 int res = 0;
3377 struct qla_qpair *qpair = cmd->qpair;
3378
3379 memset(&prm, 0, sizeof(prm));
3380 prm.cmd = cmd;
3381 prm.tgt = tgt;
3382 prm.sg = NULL;
3383 prm.req_cnt = 1;
3384
3385 /* Calculate number of entries and segments required */
3386 if (qlt_pci_map_calc_cnt(&prm) != 0)
3387 return -EAGAIN;
3388
3389 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3390 (cmd->sess && cmd->sess->deleted)) {
3391 /*
3392 * Either the port is not online or this request was from
3393 * previous life, just abort the processing.
3394 */
3395 cmd->aborted = 1;
3396 cmd->write_data_transferred = 0;
3397 cmd->state = QLA_TGT_STATE_DATA_IN;
3398 vha->hw->tgt.tgt_ops->handle_data(cmd);
3399 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3400 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3401 vha->flags.online, qla2x00_reset_active(vha),
3402 cmd->reset_count, qpair->chip_reset);
3403 return 0;
3404 }
3405
3406 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3407 /* Does F/W have an IOCBs for this request */
3408 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
3409 if (res != 0)
3410 goto out_unlock_free_unmap;
3411 if (cmd->se_cmd.prot_op)
3412 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3413 else
3414 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3415
3416 if (unlikely(res != 0)) {
3417 qpair->req->cnt += prm.req_cnt;
3418 goto out_unlock_free_unmap;
3419 }
3420
3421 pkt = (struct ctio7_to_24xx *)prm.pkt;
3422 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
3423 CTIO7_FLAGS_STATUS_MODE_0);
3424
3425 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3426 qlt_load_data_segments(&prm);
3427
3428 cmd->state = QLA_TGT_STATE_NEED_DATA;
3429 cmd->cmd_sent_to_fw = 1;
3430 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3431
3432 /* Memory Barrier */
3433 wmb();
3434 if (qpair->reqq_start_iocbs)
3435 qpair->reqq_start_iocbs(qpair);
3436 else
3437 qla2x00_start_iocbs(vha, qpair->req);
3438 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3439
3440 return res;
3441
3442 out_unlock_free_unmap:
3443 qlt_unmap_sg(vha, cmd);
3444 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3445
3446 return res;
3447 }
3448 EXPORT_SYMBOL(qlt_rdy_to_xfer);
3449
3450
3451 /*
3452 * it is assumed either hardware_lock or qpair lock is held.
3453 */
3454 static void
3455 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
3456 struct ctio_crc_from_fw *sts)
3457 {
3458 uint8_t *ap = &sts->actual_dif[0];
3459 uint8_t *ep = &sts->expected_dif[0];
3460 uint64_t lba = cmd->se_cmd.t_task_lba;
3461 uint8_t scsi_status, sense_key, asc, ascq;
3462 unsigned long flags;
3463 struct scsi_qla_host *vha = cmd->vha;
3464
3465 cmd->trc_flags |= TRC_DIF_ERR;
3466
3467 cmd->a_guard = get_unaligned_be16(ap + 0);
3468 cmd->a_app_tag = get_unaligned_be16(ap + 2);
3469 cmd->a_ref_tag = get_unaligned_be32(ap + 4);
3470
3471 cmd->e_guard = get_unaligned_be16(ep + 0);
3472 cmd->e_app_tag = get_unaligned_be16(ep + 2);
3473 cmd->e_ref_tag = get_unaligned_be32(ep + 4);
3474
3475 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3476 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
3477
3478 scsi_status = sense_key = asc = ascq = 0;
3479
3480 /* check appl tag */
3481 if (cmd->e_app_tag != cmd->a_app_tag) {
3482 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3483 "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]",
3484 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3485 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3486 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3487 cmd->atio.u.isp24.fcp_hdr.ox_id);
3488
3489 cmd->dif_err_code = DIF_ERR_APP;
3490 scsi_status = SAM_STAT_CHECK_CONDITION;
3491 sense_key = ABORTED_COMMAND;
3492 asc = 0x10;
3493 ascq = 0x2;
3494 }
3495
3496 /* check ref tag */
3497 if (cmd->e_ref_tag != cmd->a_ref_tag) {
3498 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3499 "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] ",
3500 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3501 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3502 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3503 cmd->atio.u.isp24.fcp_hdr.ox_id);
3504
3505 cmd->dif_err_code = DIF_ERR_REF;
3506 scsi_status = SAM_STAT_CHECK_CONDITION;
3507 sense_key = ABORTED_COMMAND;
3508 asc = 0x10;
3509 ascq = 0x3;
3510 goto out;
3511 }
3512
3513 /* check guard */
3514 if (cmd->e_guard != cmd->a_guard) {
3515 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3516 "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]",
3517 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3518 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3519 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3520 cmd->atio.u.isp24.fcp_hdr.ox_id);
3521
3522 cmd->dif_err_code = DIF_ERR_GRD;
3523 scsi_status = SAM_STAT_CHECK_CONDITION;
3524 sense_key = ABORTED_COMMAND;
3525 asc = 0x10;
3526 ascq = 0x1;
3527 }
3528 out:
3529 switch (cmd->state) {
3530 case QLA_TGT_STATE_NEED_DATA:
3531 /* handle_data will load DIF error code */
3532 cmd->state = QLA_TGT_STATE_DATA_IN;
3533 vha->hw->tgt.tgt_ops->handle_data(cmd);
3534 break;
3535 default:
3536 spin_lock_irqsave(&cmd->cmd_lock, flags);
3537 if (cmd->aborted) {
3538 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3539 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3540 break;
3541 }
3542 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3543
3544 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3545 ascq);
3546 /* assume scsi status gets out on the wire.
3547 * Will not wait for completion.
3548 */
3549 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3550 break;
3551 }
3552 }
3553
3554 /* If hardware_lock held on entry, might drop it, then reaquire */
3555 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3556 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3557 struct imm_ntfy_from_isp *ntfy)
3558 {
3559 struct nack_to_isp *nack;
3560 struct qla_hw_data *ha = vha->hw;
3561 request_t *pkt;
3562 int ret = 0;
3563
3564 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3565 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3566
3567 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3568 if (pkt == NULL) {
3569 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3570 "qla_target(%d): %s failed: unable to allocate "
3571 "request packet\n", vha->vp_idx, __func__);
3572 return -ENOMEM;
3573 }
3574
3575 pkt->entry_type = NOTIFY_ACK_TYPE;
3576 pkt->entry_count = 1;
3577 pkt->handle = QLA_TGT_SKIP_HANDLE;
3578
3579 nack = (struct nack_to_isp *)pkt;
3580 nack->ox_id = ntfy->ox_id;
3581
3582 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3583 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3584 nack->u.isp24.flags = ntfy->u.isp24.flags &
3585 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
3586 }
3587
3588 /* terminate */
3589 nack->u.isp24.flags |=
3590 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3591
3592 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3593 nack->u.isp24.status = ntfy->u.isp24.status;
3594 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3595 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3596 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3597 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3598 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3599 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3600
3601 qla2x00_start_iocbs(vha, vha->req);
3602 return ret;
3603 }
3604
3605 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3606 struct imm_ntfy_from_isp *imm, int ha_locked)
3607 {
3608 int rc;
3609
3610 WARN_ON_ONCE(!ha_locked);
3611 rc = __qlt_send_term_imm_notif(vha, imm);
3612 pr_debug("rc = %d\n", rc);
3613 }
3614
3615 /*
3616 * If hardware_lock held on entry, might drop it, then reaquire
3617 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3618 */
3619 static int __qlt_send_term_exchange(struct qla_qpair *qpair,
3620 struct qla_tgt_cmd *cmd,
3621 struct atio_from_isp *atio)
3622 {
3623 struct scsi_qla_host *vha = qpair->vha;
3624 struct ctio7_to_24xx *ctio24;
3625 struct qla_hw_data *ha = vha->hw;
3626 request_t *pkt;
3627 int ret = 0;
3628 uint16_t temp;
3629
3630 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3631
3632 if (cmd)
3633 vha = cmd->vha;
3634
3635 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
3636 if (pkt == NULL) {
3637 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3638 "qla_target(%d): %s failed: unable to allocate "
3639 "request packet\n", vha->vp_idx, __func__);
3640 return -ENOMEM;
3641 }
3642
3643 if (cmd != NULL) {
3644 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3645 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3646 "qla_target(%d): Terminating cmd %p with "
3647 "incorrect state %d\n", vha->vp_idx, cmd,
3648 cmd->state);
3649 } else
3650 ret = 1;
3651 }
3652
3653 qpair->tgt_counters.num_term_xchg_sent++;
3654 pkt->entry_count = 1;
3655 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3656
3657 ctio24 = (struct ctio7_to_24xx *)pkt;
3658 ctio24->entry_type = CTIO_TYPE7;
3659 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED);
3660 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3661 ctio24->vp_index = vha->vp_idx;
3662 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
3663 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3664 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3665 CTIO7_FLAGS_TERMINATE;
3666 ctio24->u.status1.flags = cpu_to_le16(temp);
3667 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3668 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3669
3670 /* Memory Barrier */
3671 wmb();
3672 if (qpair->reqq_start_iocbs)
3673 qpair->reqq_start_iocbs(qpair);
3674 else
3675 qla2x00_start_iocbs(vha, qpair->req);
3676 return ret;
3677 }
3678
3679 static void qlt_send_term_exchange(struct qla_qpair *qpair,
3680 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3681 int ul_abort)
3682 {
3683 struct scsi_qla_host *vha;
3684 unsigned long flags = 0;
3685 int rc;
3686
3687 /* why use different vha? NPIV */
3688 if (cmd)
3689 vha = cmd->vha;
3690 else
3691 vha = qpair->vha;
3692
3693 if (ha_locked) {
3694 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3695 if (rc == -ENOMEM)
3696 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3697 goto done;
3698 }
3699 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3700 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3701 if (rc == -ENOMEM)
3702 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3703
3704 done:
3705 if (cmd && !ul_abort && !cmd->aborted) {
3706 if (cmd->sg_mapped)
3707 qlt_unmap_sg(vha, cmd);
3708 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3709 }
3710
3711 if (!ha_locked)
3712 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3713
3714 return;
3715 }
3716
3717 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3718 {
3719 struct list_head free_list;
3720 struct qla_tgt_cmd *cmd, *tcmd;
3721
3722 vha->hw->tgt.leak_exchg_thresh_hold =
3723 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3724
3725 cmd = tcmd = NULL;
3726 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3727 INIT_LIST_HEAD(&free_list);
3728 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3729
3730 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3731 list_del(&cmd->cmd_list);
3732 /* This cmd was never sent to TCM. There is no need
3733 * to schedule free or call free_cmd
3734 */
3735 qlt_free_cmd(cmd);
3736 vha->hw->tgt.num_qfull_cmds_alloc--;
3737 }
3738 }
3739 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3740 }
3741
3742 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3743 {
3744 uint32_t total_leaked;
3745
3746 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3747
3748 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3749 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3750
3751 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3752 "Chip reset due to exchange starvation: %d/%d.\n",
3753 total_leaked, vha->hw->cur_fw_xcb_count);
3754
3755 if (IS_P3P_TYPE(vha->hw))
3756 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3757 else
3758 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3759 qla2xxx_wake_dpc(vha);
3760 }
3761
3762 }
3763
3764 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3765 {
3766 struct qla_tgt *tgt = cmd->tgt;
3767 struct scsi_qla_host *vha = tgt->vha;
3768 struct se_cmd *se_cmd = &cmd->se_cmd;
3769 unsigned long flags;
3770
3771 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3772 "qla_target(%d): terminating exchange for aborted cmd=%p "
3773 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3774 se_cmd->tag);
3775
3776 spin_lock_irqsave(&cmd->cmd_lock, flags);
3777 if (cmd->aborted) {
3778 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3779 /*
3780 * It's normal to see 2 calls in this path:
3781 * 1) XFER Rdy completion + CMD_T_ABORT
3782 * 2) TCM TMR - drain_state_list
3783 */
3784 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3785 "multiple abort. %p transport_state %x, t_state %x, "
3786 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3787 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
3788 return -EIO;
3789 }
3790 cmd->aborted = 1;
3791 cmd->trc_flags |= TRC_ABORT;
3792 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3793
3794 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
3795 return 0;
3796 }
3797 EXPORT_SYMBOL(qlt_abort_cmd);
3798
3799 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3800 {
3801 struct fc_port *sess = cmd->sess;
3802
3803 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3804 "%s: se_cmd[%p] ox_id %04x\n",
3805 __func__, &cmd->se_cmd,
3806 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3807
3808 BUG_ON(cmd->cmd_in_wq);
3809
3810 if (cmd->sg_mapped)
3811 qlt_unmap_sg(cmd->vha, cmd);
3812
3813 if (!cmd->q_full)
3814 qlt_decr_num_pend_cmds(cmd->vha);
3815
3816 BUG_ON(cmd->sg_mapped);
3817 cmd->jiffies_at_free = get_jiffies_64();
3818 if (unlikely(cmd->free_sg))
3819 kfree(cmd->sg);
3820
3821 if (!sess || !sess->se_sess) {
3822 WARN_ON(1);
3823 return;
3824 }
3825 cmd->jiffies_at_free = get_jiffies_64();
3826 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
3827 }
3828 EXPORT_SYMBOL(qlt_free_cmd);
3829
3830 /*
3831 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3832 */
3833 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
3834 struct qla_tgt_cmd *cmd, uint32_t status)
3835 {
3836 int term = 0;
3837 struct scsi_qla_host *vha = qpair->vha;
3838
3839 if (cmd->se_cmd.prot_op)
3840 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
3841 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3842 "se_cmd=%p tag[%x] op %#x/%s",
3843 cmd->lba, cmd->lba,
3844 cmd->num_blks, &cmd->se_cmd,
3845 cmd->atio.u.isp24.exchange_addr,
3846 cmd->se_cmd.prot_op,
3847 prot_op_str(cmd->se_cmd.prot_op));
3848
3849 if (ctio != NULL) {
3850 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3851
3852 term = !(c->flags &
3853 cpu_to_le16(OF_TERM_EXCH));
3854 } else
3855 term = 1;
3856
3857 if (term)
3858 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
3859
3860 return term;
3861 }
3862
3863
3864 /* ha->hardware_lock supposed to be held on entry */
3865 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3866 struct rsp_que *rsp, uint32_t handle, void *ctio)
3867 {
3868 void *cmd = NULL;
3869 struct req_que *req;
3870 int qid = GET_QID(handle);
3871 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
3872
3873 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3874 return NULL;
3875
3876 if (qid == rsp->req->id) {
3877 req = rsp->req;
3878 } else if (vha->hw->req_q_map[qid]) {
3879 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3880 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3881 vha->vp_idx, rsp->id, handle);
3882 req = vha->hw->req_q_map[qid];
3883 } else {
3884 return NULL;
3885 }
3886
3887 h &= QLA_CMD_HANDLE_MASK;
3888
3889 if (h != QLA_TGT_NULL_HANDLE) {
3890 if (unlikely(h >= req->num_outstanding_cmds)) {
3891 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3892 "qla_target(%d): Wrong handle %x received\n",
3893 vha->vp_idx, handle);
3894 return NULL;
3895 }
3896
3897 cmd = req->outstanding_cmds[h];
3898 if (unlikely(cmd == NULL)) {
3899 ql_dbg(ql_dbg_async, vha, 0xe053,
3900 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3901 vha->vp_idx, handle, req->id, rsp->id);
3902 return NULL;
3903 }
3904 req->outstanding_cmds[h] = NULL;
3905 } else if (ctio != NULL) {
3906 /* We can't get loop ID from CTIO7 */
3907 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3908 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3909 "support NULL handles\n", vha->vp_idx);
3910 return NULL;
3911 }
3912
3913 return cmd;
3914 }
3915
3916 /*
3917 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3918 */
3919 static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3920 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
3921 {
3922 struct qla_hw_data *ha = vha->hw;
3923 struct se_cmd *se_cmd;
3924 struct qla_tgt_cmd *cmd;
3925 struct qla_qpair *qpair = rsp->qpair;
3926
3927 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3928 /* That could happen only in case of an error/reset/abort */
3929 if (status != CTIO_SUCCESS) {
3930 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3931 "Intermediate CTIO received"
3932 " (status %x)\n", status);
3933 }
3934 return;
3935 }
3936
3937 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
3938 if (cmd == NULL)
3939 return;
3940
3941 se_cmd = &cmd->se_cmd;
3942 cmd->cmd_sent_to_fw = 0;
3943
3944 qlt_unmap_sg(vha, cmd);
3945
3946 if (unlikely(status != CTIO_SUCCESS)) {
3947 switch (status & 0xFFFF) {
3948 case CTIO_INVALID_RX_ID:
3949 if (printk_ratelimit())
3950 dev_info(&vha->hw->pdev->dev,
3951 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n",
3952 vha->vp_idx, cmd->atio.u.isp24.attr,
3953 ((cmd->ctio_flags >> 9) & 0xf),
3954 cmd->ctio_flags);
3955
3956 break;
3957 case CTIO_LIP_RESET:
3958 case CTIO_TARGET_RESET:
3959 case CTIO_ABORTED:
3960 /* driver request abort via Terminate exchange */
3961 case CTIO_TIMEOUT:
3962 /* They are OK */
3963 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3964 "qla_target(%d): CTIO with "
3965 "status %#x received, state %x, se_cmd %p, "
3966 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3967 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3968 status, cmd->state, se_cmd);
3969 break;
3970
3971 case CTIO_PORT_LOGGED_OUT:
3972 case CTIO_PORT_UNAVAILABLE:
3973 {
3974 int logged_out =
3975 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3976
3977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3978 "qla_target(%d): CTIO with %s status %x "
3979 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3980 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
3981 status, cmd->state, se_cmd);
3982
3983 if (logged_out && cmd->sess) {
3984 /*
3985 * Session is already logged out, but we need
3986 * to notify initiator, who's not aware of this
3987 */
3988 cmd->sess->send_els_logo = 1;
3989 ql_dbg(ql_dbg_disc, vha, 0x20f8,
3990 "%s %d %8phC post del sess\n",
3991 __func__, __LINE__, cmd->sess->port_name);
3992
3993 qlt_schedule_sess_for_deletion(cmd->sess);
3994 }
3995 break;
3996 }
3997 case CTIO_DIF_ERROR: {
3998 struct ctio_crc_from_fw *crc =
3999 (struct ctio_crc_from_fw *)ctio;
4000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
4001 "qla_target(%d): CTIO with DIF_ERROR status %x "
4002 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
4003 "expect_dif[0x%llx]\n",
4004 vha->vp_idx, status, cmd->state, se_cmd,
4005 *((u64 *)&crc->actual_dif[0]),
4006 *((u64 *)&crc->expected_dif[0]));
4007
4008 qlt_handle_dif_error(qpair, cmd, ctio);
4009 return;
4010 }
4011 default:
4012 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
4013 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
4014 vha->vp_idx, status, cmd->state, se_cmd);
4015 break;
4016 }
4017
4018
4019 /* "cmd->aborted" means
4020 * cmd is already aborted/terminated, we don't
4021 * need to terminate again. The exchange is already
4022 * cleaned up/freed at FW level. Just cleanup at driver
4023 * level.
4024 */
4025 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
4026 (!cmd->aborted)) {
4027 cmd->trc_flags |= TRC_CTIO_ERR;
4028 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
4029 return;
4030 }
4031 }
4032
4033 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
4034 cmd->trc_flags |= TRC_CTIO_DONE;
4035 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
4036 cmd->state = QLA_TGT_STATE_DATA_IN;
4037
4038 if (status == CTIO_SUCCESS)
4039 cmd->write_data_transferred = 1;
4040
4041 ha->tgt.tgt_ops->handle_data(cmd);
4042 return;
4043 } else if (cmd->aborted) {
4044 cmd->trc_flags |= TRC_CTIO_ABORTED;
4045 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
4046 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
4047 } else {
4048 cmd->trc_flags |= TRC_CTIO_STRANGE;
4049 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
4050 "qla_target(%d): A command in state (%d) should "
4051 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
4052 }
4053
4054 if (unlikely(status != CTIO_SUCCESS) &&
4055 !cmd->aborted) {
4056 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
4057 dump_stack();
4058 }
4059
4060 ha->tgt.tgt_ops->free_cmd(cmd);
4061 }
4062
4063 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
4064 uint8_t task_codes)
4065 {
4066 int fcp_task_attr;
4067
4068 switch (task_codes) {
4069 case ATIO_SIMPLE_QUEUE:
4070 fcp_task_attr = TCM_SIMPLE_TAG;
4071 break;
4072 case ATIO_HEAD_OF_QUEUE:
4073 fcp_task_attr = TCM_HEAD_TAG;
4074 break;
4075 case ATIO_ORDERED_QUEUE:
4076 fcp_task_attr = TCM_ORDERED_TAG;
4077 break;
4078 case ATIO_ACA_QUEUE:
4079 fcp_task_attr = TCM_ACA_TAG;
4080 break;
4081 case ATIO_UNTAGGED:
4082 fcp_task_attr = TCM_SIMPLE_TAG;
4083 break;
4084 default:
4085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4086 "qla_target: unknown task code %x, use ORDERED instead\n",
4087 task_codes);
4088 fcp_task_attr = TCM_ORDERED_TAG;
4089 break;
4090 }
4091
4092 return fcp_task_attr;
4093 }
4094
4095 /*
4096 * Process context for I/O path into tcm_qla2xxx code
4097 */
4098 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
4099 {
4100 scsi_qla_host_t *vha = cmd->vha;
4101 struct qla_hw_data *ha = vha->hw;
4102 struct fc_port *sess = cmd->sess;
4103 struct atio_from_isp *atio = &cmd->atio;
4104 unsigned char *cdb;
4105 unsigned long flags;
4106 uint32_t data_length;
4107 int ret, fcp_task_attr, data_dir, bidi = 0;
4108 struct qla_qpair *qpair = cmd->qpair;
4109
4110 cmd->cmd_in_wq = 0;
4111 cmd->trc_flags |= TRC_DO_WORK;
4112
4113 if (cmd->aborted) {
4114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4115 "cmd with tag %u is aborted\n",
4116 cmd->atio.u.isp24.exchange_addr);
4117 goto out_term;
4118 }
4119
4120 spin_lock_init(&cmd->cmd_lock);
4121 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
4122 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr);
4123
4124 if (atio->u.isp24.fcp_cmnd.rddata &&
4125 atio->u.isp24.fcp_cmnd.wrdata) {
4126 bidi = 1;
4127 data_dir = DMA_TO_DEVICE;
4128 } else if (atio->u.isp24.fcp_cmnd.rddata)
4129 data_dir = DMA_FROM_DEVICE;
4130 else if (atio->u.isp24.fcp_cmnd.wrdata)
4131 data_dir = DMA_TO_DEVICE;
4132 else
4133 data_dir = DMA_NONE;
4134
4135 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4136 atio->u.isp24.fcp_cmnd.task_attr);
4137 data_length = get_datalen_for_atio(atio);
4138
4139 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4140 fcp_task_attr, data_dir, bidi);
4141 if (ret != 0)
4142 goto out_term;
4143 /*
4144 * Drop extra session reference from qlt_handle_cmd_for_atio().
4145 */
4146 ha->tgt.tgt_ops->put_sess(sess);
4147 return;
4148
4149 out_term:
4150 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
4151 /*
4152 * cmd has not sent to target yet, so pass NULL as the second
4153 * argument to qlt_send_term_exchange() and free the memory here.
4154 */
4155 cmd->trc_flags |= TRC_DO_WORK_ERR;
4156 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4157 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
4158
4159 qlt_decr_num_pend_cmds(vha);
4160 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
4161 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4162
4163 ha->tgt.tgt_ops->put_sess(sess);
4164 }
4165
4166 static void qlt_do_work(struct work_struct *work)
4167 {
4168 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
4169 scsi_qla_host_t *vha = cmd->vha;
4170 unsigned long flags;
4171
4172 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4173 list_del(&cmd->cmd_list);
4174 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4175
4176 __qlt_do_work(cmd);
4177 }
4178
4179 void qlt_clr_qp_table(struct scsi_qla_host *vha)
4180 {
4181 unsigned long flags;
4182 struct qla_hw_data *ha = vha->hw;
4183 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4184 void *node;
4185 u64 key = 0;
4186
4187 ql_log(ql_log_info, vha, 0x706c,
4188 "User update Number of Active Qpairs %d\n",
4189 ha->tgt.num_act_qpairs);
4190
4191 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4192
4193 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4194 btree_remove64(&tgt->lun_qpair_map, key);
4195
4196 ha->base_qpair->lun_cnt = 0;
4197 for (key = 0; key < ha->max_qpairs; key++)
4198 if (ha->queue_pair_map[key])
4199 ha->queue_pair_map[key]->lun_cnt = 0;
4200
4201 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4202 }
4203
4204 static void qlt_assign_qpair(struct scsi_qla_host *vha,
4205 struct qla_tgt_cmd *cmd)
4206 {
4207 struct qla_qpair *qpair, *qp;
4208 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4209 struct qla_qpair_hint *h;
4210
4211 if (vha->flags.qpairs_available) {
4212 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4213 if (unlikely(!h)) {
4214 /* spread lun to qpair ratio evently */
4215 int lcnt = 0, rc;
4216 struct scsi_qla_host *base_vha =
4217 pci_get_drvdata(vha->hw->pdev);
4218
4219 qpair = vha->hw->base_qpair;
4220 if (qpair->lun_cnt == 0) {
4221 qpair->lun_cnt++;
4222 h = qla_qpair_to_hint(tgt, qpair);
4223 BUG_ON(!h);
4224 rc = btree_insert64(&tgt->lun_qpair_map,
4225 cmd->unpacked_lun, h, GFP_ATOMIC);
4226 if (rc) {
4227 qpair->lun_cnt--;
4228 ql_log(ql_log_info, vha, 0xd037,
4229 "Unable to insert lun %llx into lun_qpair_map\n",
4230 cmd->unpacked_lun);
4231 }
4232 goto out;
4233 } else {
4234 lcnt = qpair->lun_cnt;
4235 }
4236
4237 h = NULL;
4238 list_for_each_entry(qp, &base_vha->qp_list,
4239 qp_list_elem) {
4240 if (qp->lun_cnt == 0) {
4241 qp->lun_cnt++;
4242 h = qla_qpair_to_hint(tgt, qp);
4243 BUG_ON(!h);
4244 rc = btree_insert64(&tgt->lun_qpair_map,
4245 cmd->unpacked_lun, h, GFP_ATOMIC);
4246 if (rc) {
4247 qp->lun_cnt--;
4248 ql_log(ql_log_info, vha, 0xd038,
4249 "Unable to insert lun %llx into lun_qpair_map\n",
4250 cmd->unpacked_lun);
4251 }
4252 qpair = qp;
4253 goto out;
4254 } else {
4255 if (qp->lun_cnt < lcnt) {
4256 lcnt = qp->lun_cnt;
4257 qpair = qp;
4258 continue;
4259 }
4260 }
4261 }
4262 BUG_ON(!qpair);
4263 qpair->lun_cnt++;
4264 h = qla_qpair_to_hint(tgt, qpair);
4265 BUG_ON(!h);
4266 rc = btree_insert64(&tgt->lun_qpair_map,
4267 cmd->unpacked_lun, h, GFP_ATOMIC);
4268 if (rc) {
4269 qpair->lun_cnt--;
4270 ql_log(ql_log_info, vha, 0xd039,
4271 "Unable to insert lun %llx into lun_qpair_map\n",
4272 cmd->unpacked_lun);
4273 }
4274 }
4275 } else {
4276 h = &tgt->qphints[0];
4277 }
4278 out:
4279 cmd->qpair = h->qpair;
4280 cmd->se_cmd.cpuid = h->cpuid;
4281 }
4282
4283 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
4284 struct fc_port *sess,
4285 struct atio_from_isp *atio)
4286 {
4287 struct qla_tgt_cmd *cmd;
4288
4289 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess);
4290 if (!cmd)
4291 return NULL;
4292
4293 cmd->cmd_type = TYPE_TGT_CMD;
4294 memcpy(&cmd->atio, atio, sizeof(*atio));
4295 INIT_LIST_HEAD(&cmd->sess_cmd_list);
4296 cmd->state = QLA_TGT_STATE_NEW;
4297 cmd->tgt = vha->vha_tgt.qla_tgt;
4298 qlt_incr_num_pend_cmds(vha);
4299 cmd->vha = vha;
4300 cmd->sess = sess;
4301 cmd->loop_id = sess->loop_id;
4302 cmd->conf_compl_supported = sess->conf_compl_supported;
4303
4304 cmd->trc_flags = 0;
4305 cmd->jiffies_at_alloc = get_jiffies_64();
4306
4307 cmd->unpacked_lun = scsilun_to_int(
4308 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4309 qlt_assign_qpair(vha, cmd);
4310 cmd->reset_count = vha->hw->base_qpair->chip_reset;
4311 cmd->vp_idx = vha->vp_idx;
4312
4313 return cmd;
4314 }
4315
4316 /* ha->hardware_lock supposed to be held on entry */
4317 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4318 struct atio_from_isp *atio)
4319 {
4320 struct qla_hw_data *ha = vha->hw;
4321 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4322 struct fc_port *sess;
4323 struct qla_tgt_cmd *cmd;
4324 unsigned long flags;
4325 port_id_t id;
4326
4327 if (unlikely(tgt->tgt_stop)) {
4328 ql_dbg(ql_dbg_io, vha, 0x3061,
4329 "New command while device %p is shutting down\n", tgt);
4330 return -ENODEV;
4331 }
4332
4333 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
4334 if (IS_SW_RESV_ADDR(id))
4335 return -EBUSY;
4336
4337 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4338 if (unlikely(!sess))
4339 return -EFAULT;
4340
4341 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4342 * session deletion, but it's still in sess_del_work wq */
4343 if (sess->deleted) {
4344 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
4345 "New command while old session %p is being deleted\n",
4346 sess);
4347 return -EFAULT;
4348 }
4349
4350 /*
4351 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4352 */
4353 if (!kref_get_unless_zero(&sess->sess_kref)) {
4354 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
4355 "%s: kref_get fail, %8phC oxid %x \n",
4356 __func__, sess->port_name,
4357 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4358 return -EFAULT;
4359 }
4360
4361 cmd = qlt_get_tag(vha, sess, atio);
4362 if (!cmd) {
4363 ql_dbg(ql_dbg_io, vha, 0x3062,
4364 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4365 ha->tgt.tgt_ops->put_sess(sess);
4366 return -EBUSY;
4367 }
4368
4369 cmd->cmd_in_wq = 1;
4370 cmd->trc_flags |= TRC_NEW_CMD;
4371
4372 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4373 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4374 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4375
4376 INIT_WORK(&cmd->work, qlt_do_work);
4377 if (vha->flags.qpairs_available) {
4378 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4379 } else if (ha->msix_count) {
4380 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4381 queue_work_on(smp_processor_id(), qla_tgt_wq,
4382 &cmd->work);
4383 else
4384 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4385 &cmd->work);
4386 } else {
4387 queue_work(qla_tgt_wq, &cmd->work);
4388 }
4389
4390 return 0;
4391 }
4392
4393 /* ha->hardware_lock supposed to be held on entry */
4394 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
4395 int fn, void *iocb, int flags)
4396 {
4397 struct scsi_qla_host *vha = sess->vha;
4398 struct qla_hw_data *ha = vha->hw;
4399 struct qla_tgt_mgmt_cmd *mcmd;
4400 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4401 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
4402
4403 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4404 if (!mcmd) {
4405 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4406 "qla_target(%d): Allocation of management "
4407 "command failed, some commands and their data could "
4408 "leak\n", vha->vp_idx);
4409 return -ENOMEM;
4410 }
4411 memset(mcmd, 0, sizeof(*mcmd));
4412 mcmd->sess = sess;
4413
4414 if (iocb) {
4415 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4416 sizeof(mcmd->orig_iocb.imm_ntfy));
4417 }
4418 mcmd->tmr_func = fn;
4419 mcmd->flags = flags;
4420 mcmd->reset_count = ha->base_qpair->chip_reset;
4421 mcmd->qpair = h->qpair;
4422 mcmd->vha = vha;
4423 mcmd->se_cmd.cpuid = h->cpuid;
4424 mcmd->unpacked_lun = lun;
4425
4426 switch (fn) {
4427 case QLA_TGT_LUN_RESET:
4428 case QLA_TGT_CLEAR_TS:
4429 case QLA_TGT_ABORT_TS:
4430 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4431 fallthrough;
4432 case QLA_TGT_CLEAR_ACA:
4433 h = qlt_find_qphint(vha, mcmd->unpacked_lun);
4434 mcmd->qpair = h->qpair;
4435 mcmd->se_cmd.cpuid = h->cpuid;
4436 break;
4437
4438 case QLA_TGT_TARGET_RESET:
4439 case QLA_TGT_NEXUS_LOSS_SESS:
4440 case QLA_TGT_NEXUS_LOSS:
4441 case QLA_TGT_ABORT_ALL:
4442 default:
4443 /* no-op */
4444 break;
4445 }
4446
4447 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
4448 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq,
4449 &mcmd->work);
4450
4451 return 0;
4452 }
4453
4454 /* ha->hardware_lock supposed to be held on entry */
4455 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4456 {
4457 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4458 struct qla_hw_data *ha = vha->hw;
4459 struct fc_port *sess;
4460 u64 unpacked_lun;
4461 int fn;
4462 unsigned long flags;
4463
4464 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4465
4466 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4467 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4468 a->u.isp24.fcp_hdr.s_id);
4469 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4470
4471 unpacked_lun =
4472 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4473
4474 if (sess == NULL || sess->deleted)
4475 return -EFAULT;
4476
4477 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4478 }
4479
4480 /* ha->hardware_lock supposed to be held on entry */
4481 static int __qlt_abort_task(struct scsi_qla_host *vha,
4482 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
4483 {
4484 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4485 struct qla_hw_data *ha = vha->hw;
4486 struct qla_tgt_mgmt_cmd *mcmd;
4487 u64 unpacked_lun;
4488 int rc;
4489
4490 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4491 if (mcmd == NULL) {
4492 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4493 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4494 vha->vp_idx, __func__);
4495 return -ENOMEM;
4496 }
4497 memset(mcmd, 0, sizeof(*mcmd));
4498
4499 mcmd->sess = sess;
4500 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4501 sizeof(mcmd->orig_iocb.imm_ntfy));
4502
4503 unpacked_lun =
4504 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4505 mcmd->reset_count = ha->base_qpair->chip_reset;
4506 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
4507 mcmd->qpair = ha->base_qpair;
4508
4509 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
4510 le16_to_cpu(iocb->u.isp2x.seq_id));
4511 if (rc != 0) {
4512 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4513 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4514 vha->vp_idx, rc);
4515 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4516 return -EFAULT;
4517 }
4518
4519 return 0;
4520 }
4521
4522 /* ha->hardware_lock supposed to be held on entry */
4523 static int qlt_abort_task(struct scsi_qla_host *vha,
4524 struct imm_ntfy_from_isp *iocb)
4525 {
4526 struct qla_hw_data *ha = vha->hw;
4527 struct fc_port *sess;
4528 int loop_id;
4529 unsigned long flags;
4530
4531 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4532
4533 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4534 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4535 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4536
4537 if (sess == NULL) {
4538 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4539 "qla_target(%d): task abort for unexisting "
4540 "session\n", vha->vp_idx);
4541 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4542 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4543 }
4544
4545 return __qlt_abort_task(vha, iocb, sess);
4546 }
4547
4548 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4549 {
4550 if (rc != MBS_COMMAND_COMPLETE) {
4551 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4552 "%s: se_sess %p / sess %p from"
4553 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4554 " LOGO failed: %#x\n",
4555 __func__,
4556 fcport->se_sess,
4557 fcport,
4558 fcport->port_name, fcport->loop_id,
4559 fcport->d_id.b.domain, fcport->d_id.b.area,
4560 fcport->d_id.b.al_pa, rc);
4561 }
4562
4563 fcport->logout_completed = 1;
4564 }
4565
4566 /*
4567 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4568 *
4569 * Schedules sessions with matching port_id/loop_id but different wwn for
4570 * deletion. Returns existing session with matching wwn if present.
4571 * Null otherwise.
4572 */
4573 struct fc_port *
4574 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
4575 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
4576 {
4577 struct fc_port *sess = NULL, *other_sess;
4578 uint64_t other_wwn;
4579
4580 *conflict_sess = NULL;
4581
4582 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
4583
4584 other_wwn = wwn_to_u64(other_sess->port_name);
4585
4586 if (wwn == other_wwn) {
4587 WARN_ON(sess);
4588 sess = other_sess;
4589 continue;
4590 }
4591
4592 /* find other sess with nport_id collision */
4593 if (port_id.b24 == other_sess->d_id.b24) {
4594 if (loop_id != other_sess->loop_id) {
4595 ql_dbg(ql_dbg_disc, vha, 0x1000c,
4596 "Invalidating sess %p loop_id %d wwn %llx.\n",
4597 other_sess, other_sess->loop_id, other_wwn);
4598
4599 /*
4600 * logout_on_delete is set by default, but another
4601 * session that has the same s_id/loop_id combo
4602 * might have cleared it when requested this session
4603 * deletion, so don't touch it
4604 */
4605 qlt_schedule_sess_for_deletion(other_sess);
4606 } else {
4607 /*
4608 * Another wwn used to have our s_id/loop_id
4609 * kill the session, but don't free the loop_id
4610 */
4611 ql_dbg(ql_dbg_disc, vha, 0xf01b,
4612 "Invalidating sess %p loop_id %d wwn %llx.\n",
4613 other_sess, other_sess->loop_id, other_wwn);
4614
4615 other_sess->keep_nport_handle = 1;
4616 if (other_sess->disc_state != DSC_DELETED)
4617 *conflict_sess = other_sess;
4618 qlt_schedule_sess_for_deletion(other_sess);
4619 }
4620 continue;
4621 }
4622
4623 /* find other sess with nport handle collision */
4624 if ((loop_id == other_sess->loop_id) &&
4625 (loop_id != FC_NO_LOOP_ID)) {
4626 ql_dbg(ql_dbg_disc, vha, 0x1000d,
4627 "Invalidating sess %p loop_id %d wwn %llx.\n",
4628 other_sess, other_sess->loop_id, other_wwn);
4629
4630 /* Same loop_id but different s_id
4631 * Ok to kill and logout */
4632 qlt_schedule_sess_for_deletion(other_sess);
4633 }
4634 }
4635
4636 return sess;
4637 }
4638
4639 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4640 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4641 {
4642 struct qla_tgt_sess_op *op;
4643 struct qla_tgt_cmd *cmd;
4644 uint32_t key;
4645 int count = 0;
4646 unsigned long flags;
4647
4648 key = (((u32)s_id->b.domain << 16) |
4649 ((u32)s_id->b.area << 8) |
4650 ((u32)s_id->b.al_pa));
4651
4652 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4653 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4654 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4655
4656 if (op_key == key) {
4657 op->aborted = true;
4658 count++;
4659 }
4660 }
4661
4662 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4663 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4664
4665 if (op_key == key) {
4666 op->aborted = true;
4667 count++;
4668 }
4669 }
4670
4671 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4672 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4673
4674 if (cmd_key == key) {
4675 cmd->aborted = 1;
4676 count++;
4677 }
4678 }
4679 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4680
4681 return count;
4682 }
4683
4684 static int qlt_handle_login(struct scsi_qla_host *vha,
4685 struct imm_ntfy_from_isp *iocb)
4686 {
4687 struct fc_port *sess = NULL, *conflict_sess = NULL;
4688 uint64_t wwn;
4689 port_id_t port_id;
4690 uint16_t loop_id, wd3_lo;
4691 int res = 0;
4692 struct qlt_plogi_ack_t *pla;
4693 unsigned long flags;
4694
4695 lockdep_assert_held(&vha->hw->hardware_lock);
4696
4697 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4698
4699 port_id.b.domain = iocb->u.isp24.port_id[2];
4700 port_id.b.area = iocb->u.isp24.port_id[1];
4701 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4702 port_id.b.rsvd_1 = 0;
4703
4704 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4705
4706 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4707 abort_cmds_for_s_id(vha, &port_id);
4708
4709 if (wwn) {
4710 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4711 sess = qlt_find_sess_invalidate_other(vha, wwn,
4712 port_id, loop_id, &conflict_sess);
4713 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4714 } else {
4715 ql_dbg(ql_dbg_disc, vha, 0xffff,
4716 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ",
4717 __func__, __LINE__, loop_id, port_id.b24);
4718 qlt_send_term_imm_notif(vha, iocb, 1);
4719 goto out;
4720 }
4721
4722 if (IS_SW_RESV_ADDR(port_id)) {
4723 res = 1;
4724 goto out;
4725 }
4726
4727 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4728 if (!pla) {
4729 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff,
4730 "%s %d %8phC Term INOT due to mem alloc fail",
4731 __func__, __LINE__,
4732 iocb->u.isp24.port_name);
4733 qlt_send_term_imm_notif(vha, iocb, 1);
4734 goto out;
4735 }
4736
4737 if (conflict_sess) {
4738 conflict_sess->login_gen++;
4739 qlt_plogi_ack_link(vha, pla, conflict_sess,
4740 QLT_PLOGI_LINK_CONFLICT);
4741 }
4742
4743 if (!sess) {
4744 pla->ref_count++;
4745 ql_dbg(ql_dbg_disc, vha, 0xffff,
4746 "%s %d %8phC post new sess\n",
4747 __func__, __LINE__, iocb->u.isp24.port_name);
4748 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4749 qla24xx_post_newsess_work(vha, &port_id,
4750 iocb->u.isp24.port_name,
4751 iocb->u.isp24.u.plogi.node_name,
4752 pla, 0);
4753 else
4754 qla24xx_post_newsess_work(vha, &port_id,
4755 iocb->u.isp24.port_name, NULL,
4756 pla, 0);
4757
4758 goto out;
4759 }
4760
4761 if (sess->disc_state == DSC_UPD_FCPORT) {
4762 u16 sec;
4763
4764 /*
4765 * Remote port registration is still going on from
4766 * previous login. Allow it to finish before we
4767 * accept the new login.
4768 */
4769 sess->next_disc_state = DSC_DELETE_PEND;
4770 sec = jiffies_to_msecs(jiffies -
4771 sess->jiffies_at_registration) / 1000;
4772 if (sess->sec_since_registration < sec && sec &&
4773 !(sec % 5)) {
4774 sess->sec_since_registration = sec;
4775 ql_dbg(ql_dbg_disc, vha, 0xffff,
4776 "%s %8phC - Slow Rport registration (%d Sec)\n",
4777 __func__, sess->port_name, sec);
4778 }
4779
4780 if (!conflict_sess) {
4781 list_del(&pla->list);
4782 kmem_cache_free(qla_tgt_plogi_cachep, pla);
4783 }
4784
4785 qlt_send_term_imm_notif(vha, iocb, 1);
4786 goto out;
4787 }
4788
4789 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4790 sess->d_id = port_id;
4791 sess->login_gen++;
4792
4793 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4794 sess->fw_login_state = DSC_LS_PRLI_PEND;
4795 sess->local = 0;
4796 sess->loop_id = loop_id;
4797 sess->d_id = port_id;
4798 sess->fw_login_state = DSC_LS_PRLI_PEND;
4799 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4800
4801 if (wd3_lo & BIT_7)
4802 sess->conf_compl_supported = 1;
4803
4804 if ((wd3_lo & BIT_4) == 0)
4805 sess->port_type = FCT_INITIATOR;
4806 else
4807 sess->port_type = FCT_TARGET;
4808
4809 } else
4810 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4811
4812
4813 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4814 "%s %d %8phC DS %d\n",
4815 __func__, __LINE__, sess->port_name, sess->disc_state);
4816
4817 switch (sess->disc_state) {
4818 case DSC_DELETED:
4819 case DSC_LOGIN_PEND:
4820 qlt_plogi_ack_unref(vha, pla);
4821 break;
4822
4823 default:
4824 /*
4825 * Under normal circumstances we want to release nport handle
4826 * during LOGO process to avoid nport handle leaks inside FW.
4827 * The exception is when LOGO is done while another PLOGI with
4828 * the same nport handle is waiting as might be the case here.
4829 * Note: there is always a possibily of a race where session
4830 * deletion has already started for other reasons (e.g. ACL
4831 * removal) and now PLOGI arrives:
4832 * 1. if PLOGI arrived in FW after nport handle has been freed,
4833 * FW must have assigned this PLOGI a new/same handle and we
4834 * can proceed ACK'ing it as usual when session deletion
4835 * completes.
4836 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4837 * bit reached it, the handle has now been released. We'll
4838 * get an error when we ACK this PLOGI. Nothing will be sent
4839 * back to initiator. Initiator should eventually retry
4840 * PLOGI and situation will correct itself.
4841 */
4842 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4843 (sess->d_id.b24 == port_id.b24));
4844
4845 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4846 "%s %d %8phC post del sess\n",
4847 __func__, __LINE__, sess->port_name);
4848
4849
4850 qlt_schedule_sess_for_deletion(sess);
4851 break;
4852 }
4853 out:
4854 return res;
4855 }
4856
4857 /*
4858 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4859 */
4860 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4861 struct imm_ntfy_from_isp *iocb)
4862 {
4863 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4864 struct qla_hw_data *ha = vha->hw;
4865 struct fc_port *sess = NULL, *conflict_sess = NULL;
4866 uint64_t wwn;
4867 port_id_t port_id;
4868 uint16_t loop_id;
4869 uint16_t wd3_lo;
4870 int res = 0;
4871 unsigned long flags;
4872
4873 lockdep_assert_held(&ha->hardware_lock);
4874
4875 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4876
4877 port_id.b.domain = iocb->u.isp24.port_id[2];
4878 port_id.b.area = iocb->u.isp24.port_id[1];
4879 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4880 port_id.b.rsvd_1 = 0;
4881
4882 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4883
4884 ql_dbg(ql_dbg_disc, vha, 0xf026,
4885 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4886 vha->vp_idx, iocb->u.isp24.port_id[2],
4887 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4888 iocb->u.isp24.status_subcode, loop_id,
4889 iocb->u.isp24.port_name);
4890
4891 /* res = 1 means ack at the end of thread
4892 * res = 0 means ack async/later.
4893 */
4894 switch (iocb->u.isp24.status_subcode) {
4895 case ELS_PLOGI:
4896 res = qlt_handle_login(vha, iocb);
4897 break;
4898
4899 case ELS_PRLI:
4900 if (N2N_TOPO(ha)) {
4901 sess = qla2x00_find_fcport_by_wwpn(vha,
4902 iocb->u.isp24.port_name, 1);
4903
4904 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4905 ql_dbg(ql_dbg_disc, vha, 0xffff,
4906 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4907 __func__, __LINE__,
4908 iocb->u.isp24.port_name);
4909 qlt_send_term_imm_notif(vha, iocb, 1);
4910 break;
4911 }
4912
4913 res = qlt_handle_login(vha, iocb);
4914 break;
4915 }
4916
4917 if (IS_SW_RESV_ADDR(port_id)) {
4918 res = 1;
4919 break;
4920 }
4921
4922 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4923
4924 if (wwn) {
4925 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4926 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4927 loop_id, &conflict_sess);
4928 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4929 }
4930
4931 if (conflict_sess) {
4932 switch (conflict_sess->disc_state) {
4933 case DSC_DELETED:
4934 case DSC_DELETE_PEND:
4935 break;
4936 default:
4937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4938 "PRLI with conflicting sess %p port %8phC\n",
4939 conflict_sess, conflict_sess->port_name);
4940 conflict_sess->fw_login_state =
4941 DSC_LS_PORT_UNAVAIL;
4942 qlt_send_term_imm_notif(vha, iocb, 1);
4943 res = 0;
4944 break;
4945 }
4946 }
4947
4948 if (sess != NULL) {
4949 bool delete = false;
4950 int sec;
4951
4952 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4953 switch (sess->fw_login_state) {
4954 case DSC_LS_PLOGI_PEND:
4955 case DSC_LS_PLOGI_COMP:
4956 case DSC_LS_PRLI_COMP:
4957 break;
4958 default:
4959 delete = true;
4960 break;
4961 }
4962
4963 switch (sess->disc_state) {
4964 case DSC_UPD_FCPORT:
4965 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4966 flags);
4967
4968 sec = jiffies_to_msecs(jiffies -
4969 sess->jiffies_at_registration)/1000;
4970 if (sess->sec_since_registration < sec && sec &&
4971 !(sec % 5)) {
4972 sess->sec_since_registration = sec;
4973 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
4974 "%s %8phC : Slow Rport registration(%d Sec)\n",
4975 __func__, sess->port_name, sec);
4976 }
4977 qlt_send_term_imm_notif(vha, iocb, 1);
4978 return 0;
4979
4980 case DSC_LOGIN_PEND:
4981 case DSC_GPDB:
4982 case DSC_LOGIN_COMPLETE:
4983 case DSC_ADISC:
4984 delete = false;
4985 break;
4986 default:
4987 break;
4988 }
4989
4990 if (delete) {
4991 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4992 flags);
4993 /*
4994 * Impatient initiator sent PRLI before last
4995 * PLOGI could finish. Will force him to re-try,
4996 * while last one finishes.
4997 */
4998 ql_log(ql_log_warn, sess->vha, 0xf095,
4999 "sess %p PRLI received, before plogi ack.\n",
5000 sess);
5001 qlt_send_term_imm_notif(vha, iocb, 1);
5002 res = 0;
5003 break;
5004 }
5005
5006 /*
5007 * This shouldn't happen under normal circumstances,
5008 * since we have deleted the old session during PLOGI
5009 */
5010 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
5011 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
5012 sess->loop_id, sess, iocb->u.isp24.nport_handle);
5013
5014 sess->local = 0;
5015 sess->loop_id = loop_id;
5016 sess->d_id = port_id;
5017 sess->fw_login_state = DSC_LS_PRLI_PEND;
5018
5019 if (wd3_lo & BIT_7)
5020 sess->conf_compl_supported = 1;
5021
5022 if ((wd3_lo & BIT_4) == 0)
5023 sess->port_type = FCT_INITIATOR;
5024 else
5025 sess->port_type = FCT_TARGET;
5026
5027 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
5028 }
5029 res = 1; /* send notify ack */
5030
5031 /* Make session global (not used in fabric mode) */
5032 if (ha->current_topology != ISP_CFG_F) {
5033 if (sess) {
5034 ql_dbg(ql_dbg_disc, vha, 0x20fa,
5035 "%s %d %8phC post nack\n",
5036 __func__, __LINE__, sess->port_name);
5037 qla24xx_post_nack_work(vha, sess, iocb,
5038 SRB_NACK_PRLI);
5039 res = 0;
5040 } else {
5041 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
5042 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
5043 qla2xxx_wake_dpc(vha);
5044 }
5045 } else {
5046 if (sess) {
5047 ql_dbg(ql_dbg_disc, vha, 0x20fb,
5048 "%s %d %8phC post nack\n",
5049 __func__, __LINE__, sess->port_name);
5050 qla24xx_post_nack_work(vha, sess, iocb,
5051 SRB_NACK_PRLI);
5052 res = 0;
5053 }
5054 }
5055 break;
5056
5057 case ELS_TPRLO:
5058 if (le16_to_cpu(iocb->u.isp24.flags) &
5059 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
5060 loop_id = 0xFFFF;
5061 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
5062 res = 1;
5063 break;
5064 }
5065 fallthrough;
5066 case ELS_LOGO:
5067 case ELS_PRLO:
5068 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5069 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
5070 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5071
5072 if (sess) {
5073 sess->login_gen++;
5074 sess->fw_login_state = DSC_LS_LOGO_PEND;
5075 sess->logo_ack_needed = 1;
5076 memcpy(sess->iocb, iocb, IOCB_SIZE);
5077 }
5078
5079 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5080
5081 ql_dbg(ql_dbg_disc, vha, 0x20fc,
5082 "%s: logo %llx res %d sess %p ",
5083 __func__, wwn, res, sess);
5084 if (res == 0) {
5085 /*
5086 * cmd went upper layer, look for qlt_xmit_tm_rsp()
5087 * for LOGO_ACK & sess delete
5088 */
5089 BUG_ON(!sess);
5090 res = 0;
5091 } else {
5092 /* cmd did not go to upper layer. */
5093 if (sess) {
5094 qlt_schedule_sess_for_deletion(sess);
5095 res = 0;
5096 }
5097 /* else logo will be ack */
5098 }
5099 break;
5100 case ELS_PDISC:
5101 case ELS_ADISC:
5102 {
5103 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5104
5105 if (tgt->link_reinit_iocb_pending) {
5106 qlt_send_notify_ack(ha->base_qpair,
5107 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5108 tgt->link_reinit_iocb_pending = 0;
5109 }
5110
5111 sess = qla2x00_find_fcport_by_wwpn(vha,
5112 iocb->u.isp24.port_name, 1);
5113 if (sess) {
5114 ql_dbg(ql_dbg_disc, vha, 0x20fd,
5115 "sess %p lid %d|%d DS %d LS %d\n",
5116 sess, sess->loop_id, loop_id,
5117 sess->disc_state, sess->fw_login_state);
5118 }
5119
5120 res = 1; /* send notify ack */
5121 break;
5122 }
5123
5124 case ELS_FLOGI: /* should never happen */
5125 default:
5126 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
5127 "qla_target(%d): Unsupported ELS command %x "
5128 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
5129 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5130 break;
5131 }
5132
5133 ql_dbg(ql_dbg_disc, vha, 0xf026,
5134 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5135 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5136
5137 return res;
5138 }
5139
5140 /*
5141 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5142 */
5143 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5144 struct imm_ntfy_from_isp *iocb)
5145 {
5146 struct qla_hw_data *ha = vha->hw;
5147 uint32_t add_flags = 0;
5148 int send_notify_ack = 1;
5149 uint16_t status;
5150
5151 lockdep_assert_held(&ha->hardware_lock);
5152
5153 status = le16_to_cpu(iocb->u.isp2x.status);
5154 switch (status) {
5155 case IMM_NTFY_LIP_RESET:
5156 {
5157 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5158 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5159 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5160 iocb->u.isp24.status_subcode);
5161
5162 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5163 send_notify_ack = 0;
5164 break;
5165 }
5166
5167 case IMM_NTFY_LIP_LINK_REINIT:
5168 {
5169 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5170
5171 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5172 "qla_target(%d): LINK REINIT (loop %#x, "
5173 "subcode %x)\n", vha->vp_idx,
5174 le16_to_cpu(iocb->u.isp24.nport_handle),
5175 iocb->u.isp24.status_subcode);
5176 if (tgt->link_reinit_iocb_pending) {
5177 qlt_send_notify_ack(ha->base_qpair,
5178 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5179 }
5180 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5181 tgt->link_reinit_iocb_pending = 1;
5182 /*
5183 * QLogic requires to wait after LINK REINIT for possible
5184 * PDISC or ADISC ELS commands
5185 */
5186 send_notify_ack = 0;
5187 break;
5188 }
5189
5190 case IMM_NTFY_PORT_LOGOUT:
5191 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5192 "qla_target(%d): Port logout (loop "
5193 "%#x, subcode %x)\n", vha->vp_idx,
5194 le16_to_cpu(iocb->u.isp24.nport_handle),
5195 iocb->u.isp24.status_subcode);
5196
5197 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5198 send_notify_ack = 0;
5199 /* The sessions will be cleared in the callback, if needed */
5200 break;
5201
5202 case IMM_NTFY_GLBL_TPRLO:
5203 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5204 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5205 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5206 send_notify_ack = 0;
5207 /* The sessions will be cleared in the callback, if needed */
5208 break;
5209
5210 case IMM_NTFY_PORT_CONFIG:
5211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5212 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5213 status);
5214 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5215 send_notify_ack = 0;
5216 /* The sessions will be cleared in the callback, if needed */
5217 break;
5218
5219 case IMM_NTFY_GLBL_LOGO:
5220 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5221 "qla_target(%d): Link failure detected\n",
5222 vha->vp_idx);
5223 /* I_T nexus loss */
5224 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5225 send_notify_ack = 0;
5226 break;
5227
5228 case IMM_NTFY_IOCB_OVERFLOW:
5229 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5230 "qla_target(%d): Cannot provide requested "
5231 "capability (IOCB overflowed the immediate notify "
5232 "resource count)\n", vha->vp_idx);
5233 break;
5234
5235 case IMM_NTFY_ABORT_TASK:
5236 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5237 "qla_target(%d): Abort Task (S %08x I %#x -> "
5238 "L %#x)\n", vha->vp_idx,
5239 le16_to_cpu(iocb->u.isp2x.seq_id),
5240 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5241 le16_to_cpu(iocb->u.isp2x.lun));
5242 if (qlt_abort_task(vha, iocb) == 0)
5243 send_notify_ack = 0;
5244 break;
5245
5246 case IMM_NTFY_RESOURCE:
5247 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5248 "qla_target(%d): Out of resources, host %ld\n",
5249 vha->vp_idx, vha->host_no);
5250 break;
5251
5252 case IMM_NTFY_MSG_RX:
5253 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5254 "qla_target(%d): Immediate notify task %x\n",
5255 vha->vp_idx, iocb->u.isp2x.task_flags);
5256 break;
5257
5258 case IMM_NTFY_ELS:
5259 if (qlt_24xx_handle_els(vha, iocb) == 0)
5260 send_notify_ack = 0;
5261 break;
5262 default:
5263 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5264 "qla_target(%d): Received unknown immediate "
5265 "notify status %x\n", vha->vp_idx, status);
5266 break;
5267 }
5268
5269 if (send_notify_ack)
5270 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5271 0, 0);
5272 }
5273
5274 /*
5275 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5276 * This function sends busy to ISP 2xxx or 24xx.
5277 */
5278 static int __qlt_send_busy(struct qla_qpair *qpair,
5279 struct atio_from_isp *atio, uint16_t status)
5280 {
5281 struct scsi_qla_host *vha = qpair->vha;
5282 struct ctio7_to_24xx *ctio24;
5283 struct qla_hw_data *ha = vha->hw;
5284 request_t *pkt;
5285 struct fc_port *sess = NULL;
5286 unsigned long flags;
5287 u16 temp;
5288 port_id_t id;
5289
5290 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
5291
5292 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5293 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1);
5294 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5295 if (!sess) {
5296 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
5297 return 0;
5298 }
5299 /* Sending marker isn't necessary, since we called from ISR */
5300
5301 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
5302 if (!pkt) {
5303 ql_dbg(ql_dbg_io, vha, 0x3063,
5304 "qla_target(%d): %s failed: unable to allocate "
5305 "request packet", vha->vp_idx, __func__);
5306 return -ENOMEM;
5307 }
5308
5309 qpair->tgt_counters.num_q_full_sent++;
5310 pkt->entry_count = 1;
5311 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5312
5313 ctio24 = (struct ctio7_to_24xx *)pkt;
5314 ctio24->entry_type = CTIO_TYPE7;
5315 ctio24->nport_handle = cpu_to_le16(sess->loop_id);
5316 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5317 ctio24->vp_index = vha->vp_idx;
5318 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
5319 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5320 temp = (atio->u.isp24.attr << 9) |
5321 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5322 CTIO7_FLAGS_DONT_RET_CTIO;
5323 ctio24->u.status1.flags = cpu_to_le16(temp);
5324 /*
5325 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5326 * if the explicit conformation is used.
5327 */
5328 ctio24->u.status1.ox_id =
5329 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
5330 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5331
5332 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
5333
5334 if (ctio24->u.status1.residual != 0)
5335 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER);
5336
5337 /* Memory Barrier */
5338 wmb();
5339 if (qpair->reqq_start_iocbs)
5340 qpair->reqq_start_iocbs(qpair);
5341 else
5342 qla2x00_start_iocbs(vha, qpair->req);
5343 return 0;
5344 }
5345
5346 /*
5347 * This routine is used to allocate a command for either a QFull condition
5348 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5349 * out previously.
5350 */
5351 static void
5352 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5353 struct atio_from_isp *atio, uint16_t status, int qfull)
5354 {
5355 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5356 struct qla_hw_data *ha = vha->hw;
5357 struct fc_port *sess;
5358 struct qla_tgt_cmd *cmd;
5359 unsigned long flags;
5360
5361 if (unlikely(tgt->tgt_stop)) {
5362 ql_dbg(ql_dbg_io, vha, 0x300a,
5363 "New command while device %p is shutting down\n", tgt);
5364 return;
5365 }
5366
5367 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5368 vha->hw->tgt.num_qfull_cmds_dropped++;
5369 if (vha->hw->tgt.num_qfull_cmds_dropped >
5370 vha->qla_stats.stat_max_qfull_cmds_dropped)
5371 vha->qla_stats.stat_max_qfull_cmds_dropped =
5372 vha->hw->tgt.num_qfull_cmds_dropped;
5373
5374 ql_dbg(ql_dbg_io, vha, 0x3068,
5375 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5376 vha->vp_idx, __func__,
5377 vha->hw->tgt.num_qfull_cmds_dropped);
5378
5379 qlt_chk_exch_leak_thresh_hold(vha);
5380 return;
5381 }
5382
5383 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5384 (vha, atio->u.isp24.fcp_hdr.s_id);
5385 if (!sess)
5386 return;
5387
5388 cmd = ha->tgt.tgt_ops->get_cmd(sess);
5389 if (!cmd) {
5390 ql_dbg(ql_dbg_io, vha, 0x3009,
5391 "qla_target(%d): %s: Allocation of cmd failed\n",
5392 vha->vp_idx, __func__);
5393
5394 vha->hw->tgt.num_qfull_cmds_dropped++;
5395 if (vha->hw->tgt.num_qfull_cmds_dropped >
5396 vha->qla_stats.stat_max_qfull_cmds_dropped)
5397 vha->qla_stats.stat_max_qfull_cmds_dropped =
5398 vha->hw->tgt.num_qfull_cmds_dropped;
5399
5400 qlt_chk_exch_leak_thresh_hold(vha);
5401 return;
5402 }
5403
5404 qlt_incr_num_pend_cmds(vha);
5405 INIT_LIST_HEAD(&cmd->cmd_list);
5406 memcpy(&cmd->atio, atio, sizeof(*atio));
5407
5408 cmd->tgt = vha->vha_tgt.qla_tgt;
5409 cmd->vha = vha;
5410 cmd->reset_count = ha->base_qpair->chip_reset;
5411 cmd->q_full = 1;
5412 cmd->qpair = ha->base_qpair;
5413
5414 if (qfull) {
5415 cmd->q_full = 1;
5416 /* NOTE: borrowing the state field to carry the status */
5417 cmd->state = status;
5418 } else
5419 cmd->term_exchg = 1;
5420
5421 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5422 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5423
5424 vha->hw->tgt.num_qfull_cmds_alloc++;
5425 if (vha->hw->tgt.num_qfull_cmds_alloc >
5426 vha->qla_stats.stat_max_qfull_cmds_alloc)
5427 vha->qla_stats.stat_max_qfull_cmds_alloc =
5428 vha->hw->tgt.num_qfull_cmds_alloc;
5429 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5430 }
5431
5432 int
5433 qlt_free_qfull_cmds(struct qla_qpair *qpair)
5434 {
5435 struct scsi_qla_host *vha = qpair->vha;
5436 struct qla_hw_data *ha = vha->hw;
5437 unsigned long flags;
5438 struct qla_tgt_cmd *cmd, *tcmd;
5439 struct list_head free_list, q_full_list;
5440 int rc = 0;
5441
5442 if (list_empty(&ha->tgt.q_full_list))
5443 return 0;
5444
5445 INIT_LIST_HEAD(&free_list);
5446 INIT_LIST_HEAD(&q_full_list);
5447
5448 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5449 if (list_empty(&ha->tgt.q_full_list)) {
5450 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5451 return 0;
5452 }
5453
5454 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5455 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5456
5457 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5458 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
5459 if (cmd->q_full)
5460 /* cmd->state is a borrowed field to hold status */
5461 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
5462 else if (cmd->term_exchg)
5463 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
5464
5465 if (rc == -ENOMEM)
5466 break;
5467
5468 if (cmd->q_full)
5469 ql_dbg(ql_dbg_io, vha, 0x3006,
5470 "%s: busy sent for ox_id[%04x]\n", __func__,
5471 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5472 else if (cmd->term_exchg)
5473 ql_dbg(ql_dbg_io, vha, 0x3007,
5474 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5475 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5476 else
5477 ql_dbg(ql_dbg_io, vha, 0x3008,
5478 "%s: Unexpected cmd in QFull list %p\n", __func__,
5479 cmd);
5480
5481 list_del(&cmd->cmd_list);
5482 list_add_tail(&cmd->cmd_list, &free_list);
5483
5484 /* piggy back on hardware_lock for protection */
5485 vha->hw->tgt.num_qfull_cmds_alloc--;
5486 }
5487 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
5488
5489 cmd = NULL;
5490
5491 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5492 list_del(&cmd->cmd_list);
5493 /* This cmd was never sent to TCM. There is no need
5494 * to schedule free or call free_cmd
5495 */
5496 qlt_free_cmd(cmd);
5497 }
5498
5499 if (!list_empty(&q_full_list)) {
5500 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5501 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5502 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5503 }
5504
5505 return rc;
5506 }
5507
5508 static void
5509 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5510 uint16_t status)
5511 {
5512 int rc = 0;
5513 struct scsi_qla_host *vha = qpair->vha;
5514
5515 rc = __qlt_send_busy(qpair, atio, status);
5516 if (rc == -ENOMEM)
5517 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5518 }
5519
5520 static int
5521 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5522 struct atio_from_isp *atio, uint8_t ha_locked)
5523 {
5524 struct qla_hw_data *ha = vha->hw;
5525 unsigned long flags;
5526
5527 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5528 return 0;
5529
5530 if (!ha_locked)
5531 spin_lock_irqsave(&ha->hardware_lock, flags);
5532 qlt_send_busy(qpair, atio, qla_sam_status);
5533 if (!ha_locked)
5534 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5535
5536 return 1;
5537 }
5538
5539 /* ha->hardware_lock supposed to be held on entry */
5540 /* called via callback from qla2xxx */
5541 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5542 struct atio_from_isp *atio, uint8_t ha_locked)
5543 {
5544 struct qla_hw_data *ha = vha->hw;
5545 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5546 int rc;
5547 unsigned long flags = 0;
5548
5549 if (unlikely(tgt == NULL)) {
5550 ql_dbg(ql_dbg_tgt, vha, 0x3064,
5551 "ATIO pkt, but no tgt (ha %p)", ha);
5552 return;
5553 }
5554 /*
5555 * In tgt_stop mode we also should allow all requests to pass.
5556 * Otherwise, some commands can stuck.
5557 */
5558
5559 tgt->atio_irq_cmd_count++;
5560
5561 switch (atio->u.raw.entry_type) {
5562 case ATIO_TYPE7:
5563 if (unlikely(atio->u.isp24.exchange_addr ==
5564 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) {
5565 ql_dbg(ql_dbg_io, vha, 0x3065,
5566 "qla_target(%d): ATIO_TYPE7 "
5567 "received with UNKNOWN exchange address, "
5568 "sending QUEUE_FULL\n", vha->vp_idx);
5569 if (!ha_locked)
5570 spin_lock_irqsave(&ha->hardware_lock, flags);
5571 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
5572 if (!ha_locked)
5573 spin_unlock_irqrestore(&ha->hardware_lock,
5574 flags);
5575 break;
5576 }
5577
5578 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5579 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5580 atio, ha_locked);
5581 if (rc != 0) {
5582 tgt->atio_irq_cmd_count--;
5583 return;
5584 }
5585 rc = qlt_handle_cmd_for_atio(vha, atio);
5586 } else {
5587 rc = qlt_handle_task_mgmt(vha, atio);
5588 }
5589 if (unlikely(rc != 0)) {
5590 if (!ha_locked)
5591 spin_lock_irqsave(&ha->hardware_lock, flags);
5592 switch (rc) {
5593 case -ENODEV:
5594 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5595 "qla_target: Unable to send command to target\n");
5596 break;
5597 case -EBADF:
5598 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5599 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5600 qlt_send_term_exchange(ha->base_qpair, NULL,
5601 atio, 1, 0);
5602 break;
5603 case -EBUSY:
5604 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5605 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5606 vha->vp_idx);
5607 qlt_send_busy(ha->base_qpair, atio,
5608 tc_sam_status);
5609 break;
5610 default:
5611 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5612 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5613 vha->vp_idx);
5614 qlt_send_busy(ha->base_qpair, atio,
5615 qla_sam_status);
5616 break;
5617 }
5618 if (!ha_locked)
5619 spin_unlock_irqrestore(&ha->hardware_lock,
5620 flags);
5621 }
5622 break;
5623
5624 case IMMED_NOTIFY_TYPE:
5625 {
5626 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5627 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5628 "qla_target(%d): Received ATIO packet %x "
5629 "with error status %x\n", vha->vp_idx,
5630 atio->u.raw.entry_type,
5631 atio->u.isp2x.entry_status);
5632 break;
5633 }
5634 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5635
5636 if (!ha_locked)
5637 spin_lock_irqsave(&ha->hardware_lock, flags);
5638 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5639 if (!ha_locked)
5640 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5641 break;
5642 }
5643
5644 default:
5645 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5646 "qla_target(%d): Received unknown ATIO atio "
5647 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5648 break;
5649 }
5650
5651 tgt->atio_irq_cmd_count--;
5652 }
5653
5654 /*
5655 * qpair lock is assume to be held
5656 * rc = 0 : send terminate & abts respond
5657 * rc != 0: do not send term & abts respond
5658 */
5659 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha,
5660 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry)
5661 {
5662 struct qla_hw_data *ha = vha->hw;
5663 int rc = 0;
5664
5665 /*
5666 * Detect unresolved exchange. If the same ABTS is unable
5667 * to terminate an existing command and the same ABTS loops
5668 * between FW & Driver, then force FW dump. Under 1 jiff,
5669 * we should see multiple loops.
5670 */
5671 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort &&
5672 qpair->retry_term_jiff == jiffies) {
5673 /* found existing exchange */
5674 qpair->retry_term_cnt++;
5675 if (qpair->retry_term_cnt >= 5) {
5676 rc = -EIO;
5677 qpair->retry_term_cnt = 0;
5678 ql_log(ql_log_warn, vha, 0xffff,
5679 "Unable to send ABTS Respond. Dumping firmware.\n");
5680 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer,
5681 vha, 0xffff, (uint8_t *)entry, sizeof(*entry));
5682
5683 if (qpair == ha->base_qpair)
5684 ha->isp_ops->fw_dump(vha);
5685 else
5686 qla2xxx_dump_fw(vha);
5687
5688 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5689 qla2xxx_wake_dpc(vha);
5690 }
5691 } else if (qpair->retry_term_jiff != jiffies) {
5692 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort;
5693 qpair->retry_term_cnt = 0;
5694 qpair->retry_term_jiff = jiffies;
5695 }
5696
5697 return rc;
5698 }
5699
5700
5701 static void qlt_handle_abts_completion(struct scsi_qla_host *vha,
5702 struct rsp_que *rsp, response_t *pkt)
5703 {
5704 struct abts_resp_from_24xx_fw *entry =
5705 (struct abts_resp_from_24xx_fw *)pkt;
5706 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK;
5707 struct qla_tgt_mgmt_cmd *mcmd;
5708 struct qla_hw_data *ha = vha->hw;
5709
5710 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt);
5711 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) {
5712 ql_dbg(ql_dbg_async, vha, 0xe064,
5713 "qla_target(%d): ABTS Comp without mcmd\n",
5714 vha->vp_idx);
5715 return;
5716 }
5717
5718 if (mcmd)
5719 vha = mcmd->vha;
5720 vha->vha_tgt.qla_tgt->abts_resp_expected--;
5721
5722 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5723 "ABTS_RESP_24XX: compl_status %x\n",
5724 entry->compl_status);
5725
5726 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) {
5727 if (le32_to_cpu(entry->error_subcode1) == 0x1E &&
5728 le32_to_cpu(entry->error_subcode2) == 0) {
5729 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) {
5730 ha->tgt.tgt_ops->free_mcmd(mcmd);
5731 return;
5732 }
5733 qlt_24xx_retry_term_exchange(vha, rsp->qpair,
5734 pkt, mcmd);
5735 } else {
5736 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5737 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)",
5738 vha->vp_idx, entry->compl_status,
5739 entry->error_subcode1,
5740 entry->error_subcode2);
5741 ha->tgt.tgt_ops->free_mcmd(mcmd);
5742 }
5743 } else if (mcmd) {
5744 ha->tgt.tgt_ops->free_mcmd(mcmd);
5745 }
5746 }
5747
5748 /* ha->hardware_lock supposed to be held on entry */
5749 /* called via callback from qla2xxx */
5750 static void qlt_response_pkt(struct scsi_qla_host *vha,
5751 struct rsp_que *rsp, response_t *pkt)
5752 {
5753 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5754
5755 if (unlikely(tgt == NULL)) {
5756 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5757 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5758 vha->vp_idx, pkt->entry_type, vha->hw);
5759 return;
5760 }
5761
5762 /*
5763 * In tgt_stop mode we also should allow all requests to pass.
5764 * Otherwise, some commands can stuck.
5765 */
5766
5767 switch (pkt->entry_type) {
5768 case CTIO_CRC2:
5769 case CTIO_TYPE7:
5770 {
5771 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5772
5773 qlt_do_ctio_completion(vha, rsp, entry->handle,
5774 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5775 entry);
5776 break;
5777 }
5778
5779 case ACCEPT_TGT_IO_TYPE:
5780 {
5781 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5782 int rc;
5783
5784 if (atio->u.isp2x.status !=
5785 cpu_to_le16(ATIO_CDB_VALID)) {
5786 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5787 "qla_target(%d): ATIO with error "
5788 "status %x received\n", vha->vp_idx,
5789 le16_to_cpu(atio->u.isp2x.status));
5790 break;
5791 }
5792
5793 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
5794 if (rc != 0)
5795 return;
5796
5797 rc = qlt_handle_cmd_for_atio(vha, atio);
5798 if (unlikely(rc != 0)) {
5799 switch (rc) {
5800 case -ENODEV:
5801 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5802 "qla_target: Unable to send command to target\n");
5803 break;
5804 case -EBADF:
5805 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5806 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5807 qlt_send_term_exchange(rsp->qpair, NULL,
5808 atio, 1, 0);
5809 break;
5810 case -EBUSY:
5811 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5812 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5813 vha->vp_idx);
5814 qlt_send_busy(rsp->qpair, atio,
5815 tc_sam_status);
5816 break;
5817 default:
5818 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5819 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5820 vha->vp_idx);
5821 qlt_send_busy(rsp->qpair, atio,
5822 qla_sam_status);
5823 break;
5824 }
5825 }
5826 }
5827 break;
5828
5829 case CONTINUE_TGT_IO_TYPE:
5830 {
5831 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5832
5833 qlt_do_ctio_completion(vha, rsp, entry->handle,
5834 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5835 entry);
5836 break;
5837 }
5838
5839 case CTIO_A64_TYPE:
5840 {
5841 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5842
5843 qlt_do_ctio_completion(vha, rsp, entry->handle,
5844 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5845 entry);
5846 break;
5847 }
5848
5849 case IMMED_NOTIFY_TYPE:
5850 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5851 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5852 break;
5853
5854 case NOTIFY_ACK_TYPE:
5855 if (tgt->notify_ack_expected > 0) {
5856 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5857
5858 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5859 "NOTIFY_ACK seq %08x status %x\n",
5860 le16_to_cpu(entry->u.isp2x.seq_id),
5861 le16_to_cpu(entry->u.isp2x.status));
5862 tgt->notify_ack_expected--;
5863 if (entry->u.isp2x.status !=
5864 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5865 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5866 "qla_target(%d): NOTIFY_ACK "
5867 "failed %x\n", vha->vp_idx,
5868 le16_to_cpu(entry->u.isp2x.status));
5869 }
5870 } else {
5871 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5872 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5873 vha->vp_idx);
5874 }
5875 break;
5876
5877 case ABTS_RECV_24XX:
5878 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5879 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5880 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5881 break;
5882
5883 case ABTS_RESP_24XX:
5884 if (tgt->abts_resp_expected > 0) {
5885 qlt_handle_abts_completion(vha, rsp, pkt);
5886 } else {
5887 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5888 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5889 "received\n", vha->vp_idx);
5890 }
5891 break;
5892
5893 default:
5894 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5895 "qla_target(%d): Received unknown response pkt "
5896 "type %x\n", vha->vp_idx, pkt->entry_type);
5897 break;
5898 }
5899
5900 }
5901
5902 /*
5903 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5904 */
5905 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5906 uint16_t *mailbox)
5907 {
5908 struct qla_hw_data *ha = vha->hw;
5909 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5910 int login_code;
5911
5912 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
5913 return;
5914
5915 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5916 IS_QLA2100(ha))
5917 return;
5918 /*
5919 * In tgt_stop mode we also should allow all requests to pass.
5920 * Otherwise, some commands can stuck.
5921 */
5922
5923
5924 switch (code) {
5925 case MBA_RESET: /* Reset */
5926 case MBA_SYSTEM_ERR: /* System Error */
5927 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5928 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5930 "qla_target(%d): System error async event %#x "
5931 "occurred", vha->vp_idx, code);
5932 break;
5933 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5934 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5935 break;
5936
5937 case MBA_LOOP_UP:
5938 {
5939 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
5940 "qla_target(%d): Async LOOP_UP occurred "
5941 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5942 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
5943 if (tgt->link_reinit_iocb_pending) {
5944 qlt_send_notify_ack(ha->base_qpair,
5945 &tgt->link_reinit_iocb,
5946 0, 0, 0, 0, 0, 0);
5947 tgt->link_reinit_iocb_pending = 0;
5948 }
5949 break;
5950 }
5951
5952 case MBA_LIP_OCCURRED:
5953 case MBA_LOOP_DOWN:
5954 case MBA_LIP_RESET:
5955 case MBA_RSCN_UPDATE:
5956 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
5957 "qla_target(%d): Async event %#x occurred "
5958 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5959 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
5960 break;
5961
5962 case MBA_REJECTED_FCP_CMD:
5963 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5964 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5965 vha->vp_idx,
5966 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
5967
5968 if (mailbox[3] == 1) {
5969 /* exchange starvation. */
5970 vha->hw->exch_starvation++;
5971 if (vha->hw->exch_starvation > 5) {
5972 ql_log(ql_log_warn, vha, 0xd03a,
5973 "Exchange starvation-. Resetting RISC\n");
5974
5975 vha->hw->exch_starvation = 0;
5976 if (IS_P3P_TYPE(vha->hw))
5977 set_bit(FCOE_CTX_RESET_NEEDED,
5978 &vha->dpc_flags);
5979 else
5980 set_bit(ISP_ABORT_NEEDED,
5981 &vha->dpc_flags);
5982 qla2xxx_wake_dpc(vha);
5983 }
5984 }
5985 break;
5986
5987 case MBA_PORT_UPDATE:
5988 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5989 "qla_target(%d): Port update async event %#x "
5990 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
5991 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5992 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
5993
5994 login_code = mailbox[2];
5995 if (login_code == 0x4) {
5996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5997 "Async MB 2: Got PLOGI Complete\n");
5998 vha->hw->exch_starvation = 0;
5999 } else if (login_code == 0x7)
6000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
6001 "Async MB 2: Port Logged Out\n");
6002 break;
6003 default:
6004 break;
6005 }
6006
6007 }
6008
6009 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
6010 uint16_t loop_id)
6011 {
6012 fc_port_t *fcport, *tfcp, *del;
6013 int rc;
6014 unsigned long flags;
6015 u8 newfcport = 0;
6016
6017 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
6018 if (!fcport) {
6019 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
6020 "qla_target(%d): Allocation of tmp FC port failed",
6021 vha->vp_idx);
6022 return NULL;
6023 }
6024
6025 fcport->loop_id = loop_id;
6026
6027 rc = qla24xx_gpdb_wait(vha, fcport, 0);
6028 if (rc != QLA_SUCCESS) {
6029 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
6030 "qla_target(%d): Failed to retrieve fcport "
6031 "information -- get_port_database() returned %x "
6032 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
6033 kfree(fcport);
6034 return NULL;
6035 }
6036
6037 del = NULL;
6038 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
6039 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
6040
6041 if (tfcp) {
6042 tfcp->d_id = fcport->d_id;
6043 tfcp->port_type = fcport->port_type;
6044 tfcp->supported_classes = fcport->supported_classes;
6045 tfcp->flags |= fcport->flags;
6046 tfcp->scan_state = QLA_FCPORT_FOUND;
6047
6048 del = fcport;
6049 fcport = tfcp;
6050 } else {
6051 if (vha->hw->current_topology == ISP_CFG_F)
6052 fcport->flags |= FCF_FABRIC_DEVICE;
6053
6054 list_add_tail(&fcport->list, &vha->vp_fcports);
6055 if (!IS_SW_RESV_ADDR(fcport->d_id))
6056 vha->fcport_count++;
6057 fcport->login_gen++;
6058 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE);
6059 fcport->login_succ = 1;
6060 newfcport = 1;
6061 }
6062
6063 fcport->deleted = 0;
6064 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
6065
6066 switch (vha->host->active_mode) {
6067 case MODE_INITIATOR:
6068 case MODE_DUAL:
6069 if (newfcport) {
6070 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
6071 qla24xx_sched_upd_fcport(fcport);
6072 } else {
6073 ql_dbg(ql_dbg_disc, vha, 0x20ff,
6074 "%s %d %8phC post gpsc fcp_cnt %d\n",
6075 __func__, __LINE__, fcport->port_name, vha->fcport_count);
6076 qla24xx_post_gpsc_work(vha, fcport);
6077 }
6078 }
6079 break;
6080
6081 case MODE_TARGET:
6082 default:
6083 break;
6084 }
6085 if (del)
6086 qla2x00_free_fcport(del);
6087
6088 return fcport;
6089 }
6090
6091 /* Must be called under tgt_mutex */
6092 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
6093 be_id_t s_id)
6094 {
6095 struct fc_port *sess = NULL;
6096 fc_port_t *fcport = NULL;
6097 int rc, global_resets;
6098 uint16_t loop_id = 0;
6099
6100 if (s_id.domain == 0xFF && s_id.area == 0xFC) {
6101 /*
6102 * This is Domain Controller, so it should be
6103 * OK to drop SCSI commands from it.
6104 */
6105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
6106 "Unable to find initiator with S_ID %x:%x:%x",
6107 s_id.domain, s_id.area, s_id.al_pa);
6108 return NULL;
6109 }
6110
6111 mutex_lock(&vha->vha_tgt.tgt_mutex);
6112
6113 retry:
6114 global_resets =
6115 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
6116
6117 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
6118 if (rc != 0) {
6119 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6120
6121 ql_log(ql_log_info, vha, 0xf071,
6122 "qla_target(%d): Unable to find "
6123 "initiator with S_ID %x:%x:%x",
6124 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa);
6125
6126 if (rc == -ENOENT) {
6127 qlt_port_logo_t logo;
6128
6129 logo.id = be_to_port_id(s_id);
6130 logo.cmd_count = 1;
6131 qlt_send_first_logo(vha, &logo);
6132 }
6133
6134 return NULL;
6135 }
6136
6137 fcport = qlt_get_port_database(vha, loop_id);
6138 if (!fcport) {
6139 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6140 return NULL;
6141 }
6142
6143 if (global_resets !=
6144 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
6145 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
6146 "qla_target(%d): global reset during session discovery "
6147 "(counter was %d, new %d), retrying", vha->vp_idx,
6148 global_resets,
6149 atomic_read(&vha->vha_tgt.
6150 qla_tgt->tgt_global_resets_count));
6151 goto retry;
6152 }
6153
6154 sess = qlt_create_sess(vha, fcport, true);
6155
6156 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6157
6158 return sess;
6159 }
6160
6161 static void qlt_abort_work(struct qla_tgt *tgt,
6162 struct qla_tgt_sess_work_param *prm)
6163 {
6164 struct scsi_qla_host *vha = tgt->vha;
6165 struct qla_hw_data *ha = vha->hw;
6166 struct fc_port *sess = NULL;
6167 unsigned long flags = 0, flags2 = 0;
6168 be_id_t s_id;
6169 int rc;
6170
6171 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6172
6173 if (tgt->tgt_stop)
6174 goto out_term2;
6175
6176 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id);
6177
6178 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6179 if (!sess) {
6180 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6181
6182 sess = qlt_make_local_sess(vha, s_id);
6183 /* sess has got an extra creation ref */
6184
6185 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6186 if (!sess)
6187 goto out_term2;
6188 } else {
6189 if (sess->deleted) {
6190 sess = NULL;
6191 goto out_term2;
6192 }
6193
6194 if (!kref_get_unless_zero(&sess->sess_kref)) {
6195 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
6196 "%s: kref_get fail %8phC \n",
6197 __func__, sess->port_name);
6198 sess = NULL;
6199 goto out_term2;
6200 }
6201 }
6202
6203 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
6204 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6205
6206 ha->tgt.tgt_ops->put_sess(sess);
6207
6208 if (rc != 0)
6209 goto out_term;
6210 return;
6211
6212 out_term2:
6213 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6214
6215 out_term:
6216 spin_lock_irqsave(&ha->hardware_lock, flags);
6217 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6218 FCP_TMF_REJECTED, false);
6219 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6220 }
6221
6222 static void qlt_tmr_work(struct qla_tgt *tgt,
6223 struct qla_tgt_sess_work_param *prm)
6224 {
6225 struct atio_from_isp *a = &prm->tm_iocb2;
6226 struct scsi_qla_host *vha = tgt->vha;
6227 struct qla_hw_data *ha = vha->hw;
6228 struct fc_port *sess;
6229 unsigned long flags;
6230 be_id_t s_id;
6231 int rc;
6232 u64 unpacked_lun;
6233 int fn;
6234 void *iocb;
6235
6236 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6237
6238 if (tgt->tgt_stop)
6239 goto out_term2;
6240
6241 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6242 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6243 if (!sess) {
6244 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6245
6246 sess = qlt_make_local_sess(vha, s_id);
6247 /* sess has got an extra creation ref */
6248
6249 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6250 if (!sess)
6251 goto out_term2;
6252 } else {
6253 if (sess->deleted) {
6254 goto out_term2;
6255 }
6256
6257 if (!kref_get_unless_zero(&sess->sess_kref)) {
6258 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
6259 "%s: kref_get fail %8phC\n",
6260 __func__, sess->port_name);
6261 goto out_term2;
6262 }
6263 }
6264
6265 iocb = a;
6266 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
6267 unpacked_lun =
6268 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
6269
6270 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
6271 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6272
6273 ha->tgt.tgt_ops->put_sess(sess);
6274
6275 if (rc != 0)
6276 goto out_term;
6277 return;
6278
6279 out_term2:
6280 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6281 out_term:
6282 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
6283 }
6284
6285 static void qlt_sess_work_fn(struct work_struct *work)
6286 {
6287 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6288 struct scsi_qla_host *vha = tgt->vha;
6289 unsigned long flags;
6290
6291 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6292
6293 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6294 while (!list_empty(&tgt->sess_works_list)) {
6295 struct qla_tgt_sess_work_param *prm = list_entry(
6296 tgt->sess_works_list.next, typeof(*prm),
6297 sess_works_list_entry);
6298
6299 /*
6300 * This work can be scheduled on several CPUs at time, so we
6301 * must delete the entry to eliminate double processing
6302 */
6303 list_del(&prm->sess_works_list_entry);
6304
6305 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6306
6307 switch (prm->type) {
6308 case QLA_TGT_SESS_WORK_ABORT:
6309 qlt_abort_work(tgt, prm);
6310 break;
6311 case QLA_TGT_SESS_WORK_TM:
6312 qlt_tmr_work(tgt, prm);
6313 break;
6314 default:
6315 BUG_ON(1);
6316 break;
6317 }
6318
6319 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6320
6321 kfree(prm);
6322 }
6323 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6324 }
6325
6326 /* Must be called under tgt_host_action_mutex */
6327 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6328 {
6329 struct qla_tgt *tgt;
6330 int rc, i;
6331 struct qla_qpair_hint *h;
6332
6333 if (!QLA_TGT_MODE_ENABLED())
6334 return 0;
6335
6336 if (!IS_TGT_MODE_CAPABLE(ha)) {
6337 ql_log(ql_log_warn, base_vha, 0xe070,
6338 "This adapter does not support target mode.\n");
6339 return 0;
6340 }
6341
6342 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
6343 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
6344
6345 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
6346
6347 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6348 if (!tgt) {
6349 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6350 "Unable to allocate struct qla_tgt\n");
6351 return -ENOMEM;
6352 }
6353
6354 tgt->qphints = kcalloc(ha->max_qpairs + 1,
6355 sizeof(struct qla_qpair_hint),
6356 GFP_KERNEL);
6357 if (!tgt->qphints) {
6358 kfree(tgt);
6359 ql_log(ql_log_warn, base_vha, 0x0197,
6360 "Unable to allocate qpair hints.\n");
6361 return -ENOMEM;
6362 }
6363
6364 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6365 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6366
6367 rc = btree_init64(&tgt->lun_qpair_map);
6368 if (rc) {
6369 kfree(tgt->qphints);
6370 kfree(tgt);
6371 ql_log(ql_log_info, base_vha, 0x0198,
6372 "Unable to initialize lun_qpair_map btree\n");
6373 return -EIO;
6374 }
6375 h = &tgt->qphints[0];
6376 h->qpair = ha->base_qpair;
6377 INIT_LIST_HEAD(&h->hint_elem);
6378 h->cpuid = ha->base_qpair->cpuid;
6379 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6380
6381 for (i = 0; i < ha->max_qpairs; i++) {
6382 unsigned long flags;
6383
6384 struct qla_qpair *qpair = ha->queue_pair_map[i];
6385
6386 h = &tgt->qphints[i + 1];
6387 INIT_LIST_HEAD(&h->hint_elem);
6388 if (qpair) {
6389 h->qpair = qpair;
6390 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6391 list_add_tail(&h->hint_elem, &qpair->hints_list);
6392 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6393 h->cpuid = qpair->cpuid;
6394 }
6395 }
6396
6397 tgt->ha = ha;
6398 tgt->vha = base_vha;
6399 init_waitqueue_head(&tgt->waitQ);
6400 INIT_LIST_HEAD(&tgt->del_sess_list);
6401 spin_lock_init(&tgt->sess_work_lock);
6402 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6403 INIT_LIST_HEAD(&tgt->sess_works_list);
6404 atomic_set(&tgt->tgt_global_resets_count, 0);
6405
6406 base_vha->vha_tgt.qla_tgt = tgt;
6407
6408 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6409 "qla_target(%d): using 64 Bit PCI addressing",
6410 base_vha->vp_idx);
6411 /* 3 is reserved */
6412 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6413
6414 mutex_lock(&qla_tgt_mutex);
6415 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6416 mutex_unlock(&qla_tgt_mutex);
6417
6418 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6419 ha->tgt.tgt_ops->add_target(base_vha);
6420
6421 return 0;
6422 }
6423
6424 /* Must be called under tgt_host_action_mutex */
6425 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6426 {
6427 if (!vha->vha_tgt.qla_tgt)
6428 return 0;
6429
6430 if (vha->fc_vport) {
6431 qlt_release(vha->vha_tgt.qla_tgt);
6432 return 0;
6433 }
6434
6435 /* free left over qfull cmds */
6436 qlt_init_term_exchange(vha);
6437
6438 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6439 vha->host_no, ha);
6440 qlt_release(vha->vha_tgt.qla_tgt);
6441
6442 return 0;
6443 }
6444
6445 void qlt_remove_target_resources(struct qla_hw_data *ha)
6446 {
6447 struct scsi_qla_host *node;
6448 u32 key = 0;
6449
6450 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6451 btree_remove32(&ha->tgt.host_map, key);
6452
6453 btree_destroy32(&ha->tgt.host_map);
6454 }
6455
6456 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6457 unsigned char *b)
6458 {
6459 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name);
6460 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name);
6461 put_unaligned_be64(wwpn, b);
6462 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b);
6463 }
6464
6465 /**
6466 * qla_tgt_lport_register - register lport with external module
6467 *
6468 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6469 * @phys_wwpn: physical port WWPN
6470 * @npiv_wwpn: NPIV WWPN
6471 * @npiv_wwnn: NPIV WWNN
6472 * @callback: lport initialization callback for tcm_qla2xxx code
6473 */
6474 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6475 u64 npiv_wwpn, u64 npiv_wwnn,
6476 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6477 {
6478 struct qla_tgt *tgt;
6479 struct scsi_qla_host *vha;
6480 struct qla_hw_data *ha;
6481 struct Scsi_Host *host;
6482 unsigned long flags;
6483 int rc;
6484 u8 b[WWN_SIZE];
6485
6486 mutex_lock(&qla_tgt_mutex);
6487 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6488 vha = tgt->vha;
6489 ha = vha->hw;
6490
6491 host = vha->host;
6492 if (!host)
6493 continue;
6494
6495 if (!(host->hostt->supported_mode & MODE_TARGET))
6496 continue;
6497
6498 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6499 continue;
6500
6501 spin_lock_irqsave(&ha->hardware_lock, flags);
6502 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6503 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6504 host->host_no);
6505 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6506 continue;
6507 }
6508 if (tgt->tgt_stop) {
6509 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6510 host->host_no);
6511 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6512 continue;
6513 }
6514 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6515
6516 if (!scsi_host_get(host)) {
6517 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6518 "Unable to scsi_host_get() for"
6519 " qla2xxx scsi_host\n");
6520 continue;
6521 }
6522 qlt_lport_dump(vha, phys_wwpn, b);
6523
6524 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6525 scsi_host_put(host);
6526 continue;
6527 }
6528 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6529 if (rc != 0)
6530 scsi_host_put(host);
6531
6532 mutex_unlock(&qla_tgt_mutex);
6533 return rc;
6534 }
6535 mutex_unlock(&qla_tgt_mutex);
6536
6537 return -ENODEV;
6538 }
6539 EXPORT_SYMBOL(qlt_lport_register);
6540
6541 /**
6542 * qla_tgt_lport_deregister - Degister lport
6543 *
6544 * @vha: Registered scsi_qla_host pointer
6545 */
6546 void qlt_lport_deregister(struct scsi_qla_host *vha)
6547 {
6548 struct qla_hw_data *ha = vha->hw;
6549 struct Scsi_Host *sh = vha->host;
6550 /*
6551 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6552 */
6553 vha->vha_tgt.target_lport_ptr = NULL;
6554 ha->tgt.tgt_ops = NULL;
6555 /*
6556 * Release the Scsi_Host reference for the underlying qla2xxx host
6557 */
6558 scsi_host_put(sh);
6559 }
6560 EXPORT_SYMBOL(qlt_lport_deregister);
6561
6562 /* Must be called under HW lock */
6563 void qlt_set_mode(struct scsi_qla_host *vha)
6564 {
6565 switch (vha->qlini_mode) {
6566 case QLA2XXX_INI_MODE_DISABLED:
6567 case QLA2XXX_INI_MODE_EXCLUSIVE:
6568 vha->host->active_mode = MODE_TARGET;
6569 break;
6570 case QLA2XXX_INI_MODE_ENABLED:
6571 vha->host->active_mode = MODE_INITIATOR;
6572 break;
6573 case QLA2XXX_INI_MODE_DUAL:
6574 vha->host->active_mode = MODE_DUAL;
6575 break;
6576 default:
6577 break;
6578 }
6579 }
6580
6581 /* Must be called under HW lock */
6582 static void qlt_clear_mode(struct scsi_qla_host *vha)
6583 {
6584 switch (vha->qlini_mode) {
6585 case QLA2XXX_INI_MODE_DISABLED:
6586 vha->host->active_mode = MODE_UNKNOWN;
6587 break;
6588 case QLA2XXX_INI_MODE_EXCLUSIVE:
6589 vha->host->active_mode = MODE_INITIATOR;
6590 break;
6591 case QLA2XXX_INI_MODE_ENABLED:
6592 case QLA2XXX_INI_MODE_DUAL:
6593 vha->host->active_mode = MODE_INITIATOR;
6594 break;
6595 default:
6596 break;
6597 }
6598 }
6599
6600 /*
6601 * qla_tgt_enable_vha - NO LOCK HELD
6602 *
6603 * host_reset, bring up w/ Target Mode Enabled
6604 */
6605 void
6606 qlt_enable_vha(struct scsi_qla_host *vha)
6607 {
6608 struct qla_hw_data *ha = vha->hw;
6609 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6610 unsigned long flags;
6611 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6612
6613 if (!tgt) {
6614 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6615 "Unable to locate qla_tgt pointer from"
6616 " struct qla_hw_data\n");
6617 dump_stack();
6618 return;
6619 }
6620 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6621 return;
6622
6623 if (ha->tgt.num_act_qpairs > ha->max_qpairs)
6624 ha->tgt.num_act_qpairs = ha->max_qpairs;
6625 spin_lock_irqsave(&ha->hardware_lock, flags);
6626 tgt->tgt_stopped = 0;
6627 qlt_set_mode(vha);
6628 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6629
6630 mutex_lock(&ha->optrom_mutex);
6631 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
6632 "%s.\n", __func__);
6633 if (vha->vp_idx) {
6634 qla24xx_disable_vp(vha);
6635 qla24xx_enable_vp(vha);
6636 } else {
6637 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6638 qla2xxx_wake_dpc(base_vha);
6639 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) !=
6640 QLA_SUCCESS);
6641 }
6642 mutex_unlock(&ha->optrom_mutex);
6643 }
6644 EXPORT_SYMBOL(qlt_enable_vha);
6645
6646 /*
6647 * qla_tgt_disable_vha - NO LOCK HELD
6648 *
6649 * Disable Target Mode and reset the adapter
6650 */
6651 static void qlt_disable_vha(struct scsi_qla_host *vha)
6652 {
6653 struct qla_hw_data *ha = vha->hw;
6654 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6655 unsigned long flags;
6656
6657 if (!tgt) {
6658 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6659 "Unable to locate qla_tgt pointer from"
6660 " struct qla_hw_data\n");
6661 dump_stack();
6662 return;
6663 }
6664
6665 spin_lock_irqsave(&ha->hardware_lock, flags);
6666 qlt_clear_mode(vha);
6667 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6668
6669 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6670 qla2xxx_wake_dpc(vha);
6671
6672 /*
6673 * We are expecting the offline state.
6674 * QLA_FUNCTION_FAILED means that adapter is offline.
6675 */
6676 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
6677 ql_dbg(ql_dbg_tgt, vha, 0xe081,
6678 "adapter is offline\n");
6679 }
6680
6681 /*
6682 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6683 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6684 * members.
6685 */
6686 void
6687 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6688 {
6689 vha->vha_tgt.qla_tgt = NULL;
6690
6691 mutex_init(&vha->vha_tgt.tgt_mutex);
6692 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6693
6694 qlt_clear_mode(vha);
6695
6696 /*
6697 * NOTE: Currently the value is kept the same for <24xx and
6698 * >=24xx ISPs. If it is necessary to change it,
6699 * the check should be added for specific ISPs,
6700 * assigning the value appropriately.
6701 */
6702 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6703
6704 qlt_add_target(ha, vha);
6705 }
6706
6707 u8
6708 qlt_rff_id(struct scsi_qla_host *vha)
6709 {
6710 u8 fc4_feature = 0;
6711 /*
6712 * FC-4 Feature bit 0 indicates target functionality to the name server.
6713 */
6714 if (qla_tgt_mode_enabled(vha)) {
6715 fc4_feature = BIT_0;
6716 } else if (qla_ini_mode_enabled(vha)) {
6717 fc4_feature = BIT_1;
6718 } else if (qla_dual_mode_enabled(vha))
6719 fc4_feature = BIT_0 | BIT_1;
6720
6721 return fc4_feature;
6722 }
6723
6724 /*
6725 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6726 * @ha: HA context
6727 *
6728 * Beginning of ATIO ring has initialization control block already built
6729 * by nvram config routine.
6730 *
6731 * Returns 0 on success.
6732 */
6733 void
6734 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6735 {
6736 struct qla_hw_data *ha = vha->hw;
6737 uint16_t cnt;
6738 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6739
6740 if (qla_ini_mode_enabled(vha))
6741 return;
6742
6743 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6744 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
6745 pkt++;
6746 }
6747
6748 }
6749
6750 /*
6751 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6752 * @ha: SCSI driver HA context
6753 */
6754 void
6755 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6756 {
6757 struct qla_hw_data *ha = vha->hw;
6758 struct atio_from_isp *pkt;
6759 int cnt, i;
6760
6761 if (!ha->flags.fw_started)
6762 return;
6763
6764 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6765 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
6766 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6767 cnt = pkt->u.raw.entry_count;
6768
6769 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6770 /*
6771 * This packet is corrupted. The header + payload
6772 * can not be trusted. There is no point in passing
6773 * it further up.
6774 */
6775 ql_log(ql_log_warn, vha, 0xd03c,
6776 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6777 &pkt->u.isp24.fcp_hdr.s_id,
6778 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6779 pkt->u.isp24.exchange_addr, pkt);
6780
6781 adjust_corrupted_atio(pkt);
6782 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6783 ha_locked, 0);
6784 } else {
6785 qlt_24xx_atio_pkt_all_vps(vha,
6786 (struct atio_from_isp *)pkt, ha_locked);
6787 }
6788
6789 for (i = 0; i < cnt; i++) {
6790 ha->tgt.atio_ring_index++;
6791 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6792 ha->tgt.atio_ring_index = 0;
6793 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6794 } else
6795 ha->tgt.atio_ring_ptr++;
6796
6797 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
6798 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6799 }
6800 wmb();
6801 }
6802
6803 /* Adjust ring index */
6804 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6805 }
6806
6807 void
6808 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6809 {
6810 struct qla_hw_data *ha = vha->hw;
6811 struct qla_msix_entry *msix = &ha->msix_entries[2];
6812 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6813
6814 if (!QLA_TGT_MODE_ENABLED())
6815 return;
6816
6817 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0);
6818 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0);
6819 rd_reg_dword(ISP_ATIO_Q_OUT(vha));
6820
6821 if (ha->flags.msix_enabled) {
6822 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
6823 if (IS_QLA2071(ha)) {
6824 /* 4 ports Baker: Enable Interrupt Handshake */
6825 icb->msix_atio = 0;
6826 icb->firmware_options_2 |= cpu_to_le32(BIT_26);
6827 } else {
6828 icb->msix_atio = cpu_to_le16(msix->entry);
6829 icb->firmware_options_2 &= cpu_to_le32(~BIT_26);
6830 }
6831 ql_dbg(ql_dbg_init, vha, 0xf072,
6832 "Registering ICB vector 0x%x for atio que.\n",
6833 msix->entry);
6834 }
6835 } else {
6836 /* INTx|MSI */
6837 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
6838 icb->msix_atio = 0;
6839 icb->firmware_options_2 |= cpu_to_le32(BIT_26);
6840 ql_dbg(ql_dbg_init, vha, 0xf072,
6841 "%s: Use INTx for ATIOQ.\n", __func__);
6842 }
6843 }
6844 }
6845
6846 void
6847 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6848 {
6849 struct qla_hw_data *ha = vha->hw;
6850 u32 tmp;
6851
6852 if (!QLA_TGT_MODE_ENABLED())
6853 return;
6854
6855 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6856 if (!ha->tgt.saved_set) {
6857 /* We save only once */
6858 ha->tgt.saved_exchange_count = nv->exchange_count;
6859 ha->tgt.saved_firmware_options_1 =
6860 nv->firmware_options_1;
6861 ha->tgt.saved_firmware_options_2 =
6862 nv->firmware_options_2;
6863 ha->tgt.saved_firmware_options_3 =
6864 nv->firmware_options_3;
6865 ha->tgt.saved_set = 1;
6866 }
6867
6868 if (qla_tgt_mode_enabled(vha))
6869 nv->exchange_count = cpu_to_le16(0xFFFF);
6870 else /* dual */
6871 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
6872
6873 /* Enable target mode */
6874 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6875
6876 /* Disable ini mode, if requested */
6877 if (qla_tgt_mode_enabled(vha))
6878 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6879
6880 /* Disable Full Login after LIP */
6881 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6882 /* Enable initial LIP */
6883 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6884 if (ql2xtgt_tape_enable)
6885 /* Enable FC Tape support */
6886 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6887 else
6888 /* Disable FC Tape support */
6889 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6890
6891 /* Disable Full Login after LIP */
6892 nv->host_p &= cpu_to_le32(~BIT_10);
6893
6894 /*
6895 * clear BIT 15 explicitly as we have seen at least
6896 * a couple of instances where this was set and this
6897 * was causing the firmware to not be initialized.
6898 */
6899 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6900 /* Enable target PRLI control */
6901 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6902
6903 if (IS_QLA25XX(ha)) {
6904 /* Change Loop-prefer to Pt-Pt */
6905 tmp = ~(BIT_4|BIT_5|BIT_6);
6906 nv->firmware_options_2 &= cpu_to_le32(tmp);
6907 tmp = P2P << 4;
6908 nv->firmware_options_2 |= cpu_to_le32(tmp);
6909 }
6910 } else {
6911 if (ha->tgt.saved_set) {
6912 nv->exchange_count = ha->tgt.saved_exchange_count;
6913 nv->firmware_options_1 =
6914 ha->tgt.saved_firmware_options_1;
6915 nv->firmware_options_2 =
6916 ha->tgt.saved_firmware_options_2;
6917 nv->firmware_options_3 =
6918 ha->tgt.saved_firmware_options_3;
6919 }
6920 return;
6921 }
6922
6923 if (ha->base_qpair->enable_class_2) {
6924 if (vha->flags.init_done)
6925 fc_host_supported_classes(vha->host) =
6926 FC_COS_CLASS2 | FC_COS_CLASS3;
6927
6928 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6929 } else {
6930 if (vha->flags.init_done)
6931 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6932
6933 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6934 }
6935 }
6936
6937 void
6938 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6939 struct init_cb_24xx *icb)
6940 {
6941 struct qla_hw_data *ha = vha->hw;
6942
6943 if (!QLA_TGT_MODE_ENABLED())
6944 return;
6945
6946 if (ha->tgt.node_name_set) {
6947 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6948 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6949 }
6950 }
6951
6952 void
6953 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6954 {
6955 struct qla_hw_data *ha = vha->hw;
6956 u32 tmp;
6957
6958 if (!QLA_TGT_MODE_ENABLED())
6959 return;
6960
6961 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6962 if (!ha->tgt.saved_set) {
6963 /* We save only once */
6964 ha->tgt.saved_exchange_count = nv->exchange_count;
6965 ha->tgt.saved_firmware_options_1 =
6966 nv->firmware_options_1;
6967 ha->tgt.saved_firmware_options_2 =
6968 nv->firmware_options_2;
6969 ha->tgt.saved_firmware_options_3 =
6970 nv->firmware_options_3;
6971 ha->tgt.saved_set = 1;
6972 }
6973
6974 if (qla_tgt_mode_enabled(vha))
6975 nv->exchange_count = cpu_to_le16(0xFFFF);
6976 else /* dual */
6977 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
6978
6979 /* Enable target mode */
6980 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6981
6982 /* Disable ini mode, if requested */
6983 if (qla_tgt_mode_enabled(vha))
6984 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6985 /* Disable Full Login after LIP */
6986 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6987 /* Enable initial LIP */
6988 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6989 /*
6990 * clear BIT 15 explicitly as we have seen at
6991 * least a couple of instances where this was set
6992 * and this was causing the firmware to not be
6993 * initialized.
6994 */
6995 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6996 if (ql2xtgt_tape_enable)
6997 /* Enable FC tape support */
6998 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6999 else
7000 /* Disable FC tape support */
7001 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
7002
7003 /* Disable Full Login after LIP */
7004 nv->host_p &= cpu_to_le32(~BIT_10);
7005 /* Enable target PRLI control */
7006 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
7007
7008 /* Change Loop-prefer to Pt-Pt */
7009 tmp = ~(BIT_4|BIT_5|BIT_6);
7010 nv->firmware_options_2 &= cpu_to_le32(tmp);
7011 tmp = P2P << 4;
7012 nv->firmware_options_2 |= cpu_to_le32(tmp);
7013 } else {
7014 if (ha->tgt.saved_set) {
7015 nv->exchange_count = ha->tgt.saved_exchange_count;
7016 nv->firmware_options_1 =
7017 ha->tgt.saved_firmware_options_1;
7018 nv->firmware_options_2 =
7019 ha->tgt.saved_firmware_options_2;
7020 nv->firmware_options_3 =
7021 ha->tgt.saved_firmware_options_3;
7022 }
7023 return;
7024 }
7025
7026 if (ha->base_qpair->enable_class_2) {
7027 if (vha->flags.init_done)
7028 fc_host_supported_classes(vha->host) =
7029 FC_COS_CLASS2 | FC_COS_CLASS3;
7030
7031 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
7032 } else {
7033 if (vha->flags.init_done)
7034 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
7035
7036 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
7037 }
7038 }
7039
7040 void
7041 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
7042 struct init_cb_81xx *icb)
7043 {
7044 struct qla_hw_data *ha = vha->hw;
7045
7046 if (!QLA_TGT_MODE_ENABLED())
7047 return;
7048
7049 if (ha->tgt.node_name_set) {
7050 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
7051 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
7052 }
7053 }
7054
7055 void
7056 qlt_83xx_iospace_config(struct qla_hw_data *ha)
7057 {
7058 if (!QLA_TGT_MODE_ENABLED())
7059 return;
7060
7061 ha->msix_count += 1; /* For ATIO Q */
7062 }
7063
7064
7065 void
7066 qlt_modify_vp_config(struct scsi_qla_host *vha,
7067 struct vp_config_entry_24xx *vpmod)
7068 {
7069 /* enable target mode. Bit5 = 1 => disable */
7070 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
7071 vpmod->options_idx1 &= ~BIT_5;
7072
7073 /* Disable ini mode, if requested. bit4 = 1 => disable */
7074 if (qla_tgt_mode_enabled(vha))
7075 vpmod->options_idx1 &= ~BIT_4;
7076 }
7077
7078 void
7079 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
7080 {
7081 int rc;
7082
7083 if (!QLA_TGT_MODE_ENABLED())
7084 return;
7085
7086 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
7087 IS_QLA28XX(ha)) {
7088 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
7089 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
7090 } else {
7091 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
7092 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
7093 }
7094
7095 mutex_init(&base_vha->vha_tgt.tgt_mutex);
7096 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
7097
7098 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
7099 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
7100 qlt_unknown_atio_work_fn);
7101
7102 qlt_clear_mode(base_vha);
7103
7104 rc = btree_init32(&ha->tgt.host_map);
7105 if (rc)
7106 ql_log(ql_log_info, base_vha, 0xd03d,
7107 "Unable to initialize ha->host_map btree\n");
7108
7109 qlt_update_vp_map(base_vha, SET_VP_IDX);
7110 }
7111
7112 irqreturn_t
7113 qla83xx_msix_atio_q(int irq, void *dev_id)
7114 {
7115 struct rsp_que *rsp;
7116 scsi_qla_host_t *vha;
7117 struct qla_hw_data *ha;
7118 unsigned long flags;
7119
7120 rsp = (struct rsp_que *) dev_id;
7121 ha = rsp->hw;
7122 vha = pci_get_drvdata(ha->pdev);
7123
7124 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7125
7126 qlt_24xx_process_atio_queue(vha, 0);
7127
7128 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7129
7130 return IRQ_HANDLED;
7131 }
7132
7133 static void
7134 qlt_handle_abts_recv_work(struct work_struct *work)
7135 {
7136 struct qla_tgt_sess_op *op = container_of(work,
7137 struct qla_tgt_sess_op, work);
7138 scsi_qla_host_t *vha = op->vha;
7139 struct qla_hw_data *ha = vha->hw;
7140 unsigned long flags;
7141
7142 if (qla2x00_reset_active(vha) ||
7143 (op->chip_reset != ha->base_qpair->chip_reset))
7144 return;
7145
7146 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7147 qlt_24xx_process_atio_queue(vha, 0);
7148 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7149
7150 spin_lock_irqsave(&ha->hardware_lock, flags);
7151 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
7152 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7153
7154 kfree(op);
7155 }
7156
7157 void
7158 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
7159 response_t *pkt)
7160 {
7161 struct qla_tgt_sess_op *op;
7162
7163 op = kzalloc(sizeof(*op), GFP_ATOMIC);
7164
7165 if (!op) {
7166 /* do not reach for ATIO queue here. This is best effort err
7167 * recovery at this point.
7168 */
7169 qlt_response_pkt_all_vps(vha, rsp, pkt);
7170 return;
7171 }
7172
7173 memcpy(&op->atio, pkt, sizeof(*pkt));
7174 op->vha = vha;
7175 op->chip_reset = vha->hw->base_qpair->chip_reset;
7176 op->rsp = rsp;
7177 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7178 queue_work(qla_tgt_wq, &op->work);
7179 return;
7180 }
7181
7182 int
7183 qlt_mem_alloc(struct qla_hw_data *ha)
7184 {
7185 if (!QLA_TGT_MODE_ENABLED())
7186 return 0;
7187
7188 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC,
7189 sizeof(struct qla_tgt_vp_map),
7190 GFP_KERNEL);
7191 if (!ha->tgt.tgt_vp_map)
7192 return -ENOMEM;
7193
7194 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7195 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7196 &ha->tgt.atio_dma, GFP_KERNEL);
7197 if (!ha->tgt.atio_ring) {
7198 kfree(ha->tgt.tgt_vp_map);
7199 return -ENOMEM;
7200 }
7201 return 0;
7202 }
7203
7204 void
7205 qlt_mem_free(struct qla_hw_data *ha)
7206 {
7207 if (!QLA_TGT_MODE_ENABLED())
7208 return;
7209
7210 if (ha->tgt.atio_ring) {
7211 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7212 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7213 ha->tgt.atio_dma);
7214 }
7215 ha->tgt.atio_ring = NULL;
7216 ha->tgt.atio_dma = 0;
7217 kfree(ha->tgt.tgt_vp_map);
7218 ha->tgt.tgt_vp_map = NULL;
7219 }
7220
7221 /* vport_slock to be held by the caller */
7222 void
7223 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7224 {
7225 void *slot;
7226 u32 key;
7227 int rc;
7228
7229 if (!QLA_TGT_MODE_ENABLED())
7230 return;
7231
7232 key = vha->d_id.b24;
7233
7234 switch (cmd) {
7235 case SET_VP_IDX:
7236 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7237 break;
7238 case SET_AL_PA:
7239 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7240 if (!slot) {
7241 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
7242 "Save vha in host_map %p %06x\n", vha, key);
7243 rc = btree_insert32(&vha->hw->tgt.host_map,
7244 key, vha, GFP_ATOMIC);
7245 if (rc)
7246 ql_log(ql_log_info, vha, 0xd03e,
7247 "Unable to insert s_id into host_map: %06x\n",
7248 key);
7249 return;
7250 }
7251 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7252 "replace existing vha in host_map %p %06x\n", vha, key);
7253 btree_update32(&vha->hw->tgt.host_map, key, vha);
7254 break;
7255 case RESET_VP_IDX:
7256 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7257 break;
7258 case RESET_AL_PA:
7259 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
7260 "clear vha in host_map %p %06x\n", vha, key);
7261 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7262 if (slot)
7263 btree_remove32(&vha->hw->tgt.host_map, key);
7264 vha->d_id.b24 = 0;
7265 break;
7266 }
7267 }
7268
7269 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7270 {
7271
7272 if (!vha->d_id.b24) {
7273 vha->d_id = id;
7274 qlt_update_vp_map(vha, SET_AL_PA);
7275 } else if (vha->d_id.b24 != id.b24) {
7276 qlt_update_vp_map(vha, RESET_AL_PA);
7277 vha->d_id = id;
7278 qlt_update_vp_map(vha, SET_AL_PA);
7279 }
7280 }
7281
7282 static int __init qlt_parse_ini_mode(void)
7283 {
7284 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7285 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7286 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7287 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7288 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7289 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
7290 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7291 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
7292 else
7293 return false;
7294
7295 return true;
7296 }
7297
7298 int __init qlt_init(void)
7299 {
7300 int ret;
7301
7302 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
7303 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
7304
7305 if (!qlt_parse_ini_mode()) {
7306 ql_log(ql_log_fatal, NULL, 0xe06b,
7307 "qlt_parse_ini_mode() failed\n");
7308 return -EINVAL;
7309 }
7310
7311 if (!QLA_TGT_MODE_ENABLED())
7312 return 0;
7313
7314 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7315 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7316 qla_tgt_mgmt_cmd), 0, NULL);
7317 if (!qla_tgt_mgmt_cmd_cachep) {
7318 ql_log(ql_log_fatal, NULL, 0xd04b,
7319 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
7320 return -ENOMEM;
7321 }
7322
7323 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
7324 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7325 0, NULL);
7326
7327 if (!qla_tgt_plogi_cachep) {
7328 ql_log(ql_log_fatal, NULL, 0xe06d,
7329 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7330 ret = -ENOMEM;
7331 goto out_mgmt_cmd_cachep;
7332 }
7333
7334 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7335 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7336 if (!qla_tgt_mgmt_cmd_mempool) {
7337 ql_log(ql_log_fatal, NULL, 0xe06e,
7338 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7339 ret = -ENOMEM;
7340 goto out_plogi_cachep;
7341 }
7342
7343 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7344 if (!qla_tgt_wq) {
7345 ql_log(ql_log_fatal, NULL, 0xe06f,
7346 "alloc_workqueue for qla_tgt_wq failed\n");
7347 ret = -ENOMEM;
7348 goto out_cmd_mempool;
7349 }
7350 /*
7351 * Return 1 to signal that initiator-mode is being disabled
7352 */
7353 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7354
7355 out_cmd_mempool:
7356 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7357 out_plogi_cachep:
7358 kmem_cache_destroy(qla_tgt_plogi_cachep);
7359 out_mgmt_cmd_cachep:
7360 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7361 return ret;
7362 }
7363
7364 void qlt_exit(void)
7365 {
7366 if (!QLA_TGT_MODE_ENABLED())
7367 return;
7368
7369 destroy_workqueue(qla_tgt_wq);
7370 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7371 kmem_cache_destroy(qla_tgt_plogi_cachep);
7372 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7373 }
Linux with added FPC-III support