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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / qla_target.c
blob70081b395fb2fc3d06d76add17ca7179b6ebca81
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 #include <target/target_core_base.h>
31 #include <target/target_core_fabric.h>
32
33 #include "qla_def.h"
34 #include "qla_target.h"
35
36 static int ql2xtgt_tape_enable;
37 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
38 MODULE_PARM_DESC(ql2xtgt_tape_enable,
39 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
40
41 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
42 module_param(qlini_mode, charp, S_IRUGO);
43 MODULE_PARM_DESC(qlini_mode,
44 "Determines when initiator mode will be enabled. Possible values: "
45 "\"exclusive\" - initiator mode will be enabled on load, "
46 "disabled on enabling target mode and then on disabling target mode "
47 "enabled back; "
48 "\"disabled\" - initiator mode will never be enabled; "
49 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
50 "when ready "
51 "\"enabled\" (default) - initiator mode will always stay enabled.");
52
53 static int ql_dm_tgt_ex_pct = 0;
54 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
55 MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
56 "For Dual Mode (qlini_mode=dual), this parameter determines "
57 "the percentage of exchanges/cmds FW will allocate resources "
58 "for Target mode.");
59
60 int ql2xuctrlirq = 1;
61 module_param(ql2xuctrlirq, int, 0644);
62 MODULE_PARM_DESC(ql2xuctrlirq,
63 "User to control IRQ placement via smp_affinity."
64 "Valid with qlini_mode=disabled."
65 "1(default): enable");
66
67 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
68
69 static int qla_sam_status = SAM_STAT_BUSY;
70 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */
71
72 /*
73 * From scsi/fc/fc_fcp.h
74 */
75 enum fcp_resp_rsp_codes {
76 FCP_TMF_CMPL = 0,
77 FCP_DATA_LEN_INVALID = 1,
78 FCP_CMND_FIELDS_INVALID = 2,
79 FCP_DATA_PARAM_MISMATCH = 3,
80 FCP_TMF_REJECTED = 4,
81 FCP_TMF_FAILED = 5,
82 FCP_TMF_INVALID_LUN = 9,
83 };
84
85 /*
86 * fc_pri_ta from scsi/fc/fc_fcp.h
87 */
88 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
89 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
90 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
91 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
92 #define FCP_PTA_MASK 7 /* mask for task attribute field */
93 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
94 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
95
96 /*
97 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
98 * must be called under HW lock and could unlock/lock it inside.
99 * It isn't an issue, since in the current implementation on the time when
100 * those functions are called:
101 *
102 * - Either context is IRQ and only IRQ handler can modify HW data,
103 * including rings related fields,
104 *
105 * - Or access to target mode variables from struct qla_tgt doesn't
106 * cross those functions boundaries, except tgt_stop, which
107 * additionally protected by irq_cmd_count.
108 */
109 /* Predefs for callbacks handed to qla2xxx LLD */
110 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
111 struct atio_from_isp *pkt, uint8_t);
112 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
113 response_t *pkt);
114 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
115 int fn, void *iocb, int flags);
116 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
117 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
118 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
119 struct atio_from_isp *atio, uint16_t status, int qfull);
120 static void qlt_disable_vha(struct scsi_qla_host *vha);
121 static void qlt_clear_tgt_db(struct qla_tgt *tgt);
122 static void qlt_send_notify_ack(struct qla_qpair *qpair,
123 struct imm_ntfy_from_isp *ntfy,
124 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
125 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
126 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
127 struct imm_ntfy_from_isp *imm, int ha_locked);
128 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
129 fc_port_t *fcport, bool local);
130 void qlt_unreg_sess(struct fc_port *sess);
131 static void qlt_24xx_handle_abts(struct scsi_qla_host *,
132 struct abts_recv_from_24xx *);
133 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
134 uint16_t);
135 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t);
136 static inline uint32_t qlt_make_handle(struct qla_qpair *);
137
138 /*
139 * Global Variables
140 */
141 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
142 struct kmem_cache *qla_tgt_plogi_cachep;
143 static mempool_t *qla_tgt_mgmt_cmd_mempool;
144 static struct workqueue_struct *qla_tgt_wq;
145 static DEFINE_MUTEX(qla_tgt_mutex);
146 static LIST_HEAD(qla_tgt_glist);
147
148 static const char *prot_op_str(u32 prot_op)
149 {
150 switch (prot_op) {
151 case TARGET_PROT_NORMAL: return "NORMAL";
152 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
153 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
154 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
155 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
156 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
157 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
158 default: return "UNKNOWN";
159 }
160 }
161
162 /* This API intentionally takes dest as a parameter, rather than returning
163 * int value to avoid caller forgetting to issue wmb() after the store */
164 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
165 {
166 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
167 *dest = atomic_inc_return(&base_vha->generation_tick);
168 /* memory barrier */
169 wmb();
170 }
171
172 /* Might release hw lock, then reaquire!! */
173 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
174 {
175 /* Send marker if required */
176 if (unlikely(vha->marker_needed != 0)) {
177 int rc = qla2x00_issue_marker(vha, vha_locked);
178
179 if (rc != QLA_SUCCESS) {
180 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
181 "qla_target(%d): issue_marker() failed\n",
182 vha->vp_idx);
183 }
184 return rc;
185 }
186 return QLA_SUCCESS;
187 }
188
189 static inline
190 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
191 be_id_t d_id)
192 {
193 struct scsi_qla_host *host;
194 uint32_t key;
195
196 if (vha->d_id.b.area == d_id.area &&
197 vha->d_id.b.domain == d_id.domain &&
198 vha->d_id.b.al_pa == d_id.al_pa)
199 return vha;
200
201 key = be_to_port_id(d_id).b24;
202
203 host = btree_lookup32(&vha->hw->tgt.host_map, key);
204 if (!host)
205 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
206 "Unable to find host %06x\n", key);
207
208 return host;
209 }
210
211 static inline
212 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
213 uint16_t vp_idx)
214 {
215 struct qla_hw_data *ha = vha->hw;
216
217 if (vha->vp_idx == vp_idx)
218 return vha;
219
220 BUG_ON(ha->tgt.tgt_vp_map == NULL);
221 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
222 return ha->tgt.tgt_vp_map[vp_idx].vha;
223
224 return NULL;
225 }
226
227 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
228 {
229 unsigned long flags;
230
231 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
232
233 vha->hw->tgt.num_pend_cmds++;
234 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
235 vha->qla_stats.stat_max_pend_cmds =
236 vha->hw->tgt.num_pend_cmds;
237 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
238 }
239 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
240 {
241 unsigned long flags;
242
243 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
244 vha->hw->tgt.num_pend_cmds--;
245 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
246 }
247
248
249 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
250 struct atio_from_isp *atio, uint8_t ha_locked)
251 {
252 struct qla_tgt_sess_op *u;
253 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
254 unsigned long flags;
255
256 if (tgt->tgt_stop) {
257 ql_dbg(ql_dbg_async, vha, 0x502c,
258 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
259 vha->vp_idx);
260 goto out_term;
261 }
262
263 u = kzalloc(sizeof(*u), GFP_ATOMIC);
264 if (u == NULL)
265 goto out_term;
266
267 u->vha = vha;
268 memcpy(&u->atio, atio, sizeof(*atio));
269 INIT_LIST_HEAD(&u->cmd_list);
270
271 spin_lock_irqsave(&vha->cmd_list_lock, flags);
272 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
273 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
274
275 schedule_delayed_work(&vha->unknown_atio_work, 1);
276
277 out:
278 return;
279
280 out_term:
281 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
282 goto out;
283 }
284
285 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
286 uint8_t ha_locked)
287 {
288 struct qla_tgt_sess_op *u, *t;
289 scsi_qla_host_t *host;
290 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
291 unsigned long flags;
292 uint8_t queued = 0;
293
294 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
295 if (u->aborted) {
296 ql_dbg(ql_dbg_async, vha, 0x502e,
297 "Freeing unknown %s %p, because of Abort\n",
298 "ATIO_TYPE7", u);
299 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
300 &u->atio, ha_locked, 0);
301 goto abort;
302 }
303
304 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
305 if (host != NULL) {
306 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
307 "Requeuing unknown ATIO_TYPE7 %p\n", u);
308 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
309 } else if (tgt->tgt_stop) {
310 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
311 "Freeing unknown %s %p, because tgt is being stopped\n",
312 "ATIO_TYPE7", u);
313 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
314 &u->atio, ha_locked, 0);
315 } else {
316 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
317 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
318 if (!queued) {
319 queued = 1;
320 schedule_delayed_work(&vha->unknown_atio_work,
321 1);
322 }
323 continue;
324 }
325
326 abort:
327 spin_lock_irqsave(&vha->cmd_list_lock, flags);
328 list_del(&u->cmd_list);
329 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
330 kfree(u);
331 }
332 }
333
334 void qlt_unknown_atio_work_fn(struct work_struct *work)
335 {
336 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
337 struct scsi_qla_host, unknown_atio_work);
338
339 qlt_try_to_dequeue_unknown_atios(vha, 0);
340 }
341
342 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
343 struct atio_from_isp *atio, uint8_t ha_locked)
344 {
345 ql_dbg(ql_dbg_tgt, vha, 0xe072,
346 "%s: qla_target(%d): type %x ox_id %04x\n",
347 __func__, vha->vp_idx, atio->u.raw.entry_type,
348 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
349
350 switch (atio->u.raw.entry_type) {
351 case ATIO_TYPE7:
352 {
353 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
354 atio->u.isp24.fcp_hdr.d_id);
355 if (unlikely(NULL == host)) {
356 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
357 "qla_target(%d): Received ATIO_TYPE7 "
358 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
359 atio->u.isp24.fcp_hdr.d_id.domain,
360 atio->u.isp24.fcp_hdr.d_id.area,
361 atio->u.isp24.fcp_hdr.d_id.al_pa);
362
363
364 qlt_queue_unknown_atio(vha, atio, ha_locked);
365 break;
366 }
367 if (unlikely(!list_empty(&vha->unknown_atio_list)))
368 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
369
370 qlt_24xx_atio_pkt(host, atio, ha_locked);
371 break;
372 }
373
374 case IMMED_NOTIFY_TYPE:
375 {
376 struct scsi_qla_host *host = vha;
377 struct imm_ntfy_from_isp *entry =
378 (struct imm_ntfy_from_isp *)atio;
379
380 qlt_issue_marker(vha, ha_locked);
381
382 if ((entry->u.isp24.vp_index != 0xFF) &&
383 (entry->u.isp24.nport_handle != 0xFFFF)) {
384 host = qlt_find_host_by_vp_idx(vha,
385 entry->u.isp24.vp_index);
386 if (unlikely(!host)) {
387 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
388 "qla_target(%d): Received "
389 "ATIO (IMMED_NOTIFY_TYPE) "
390 "with unknown vp_index %d\n",
391 vha->vp_idx, entry->u.isp24.vp_index);
392 break;
393 }
394 }
395 qlt_24xx_atio_pkt(host, atio, ha_locked);
396 break;
397 }
398
399 case VP_RPT_ID_IOCB_TYPE:
400 qla24xx_report_id_acquisition(vha,
401 (struct vp_rpt_id_entry_24xx *)atio);
402 break;
403
404 case ABTS_RECV_24XX:
405 {
406 struct abts_recv_from_24xx *entry =
407 (struct abts_recv_from_24xx *)atio;
408 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
409 entry->vp_index);
410 unsigned long flags;
411
412 if (unlikely(!host)) {
413 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
414 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
415 "received, with unknown vp_index %d\n",
416 vha->vp_idx, entry->vp_index);
417 break;
418 }
419 if (!ha_locked)
420 spin_lock_irqsave(&host->hw->hardware_lock, flags);
421 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
422 if (!ha_locked)
423 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
424 break;
425 }
426
427 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
428
429 default:
430 ql_dbg(ql_dbg_tgt, vha, 0xe040,
431 "qla_target(%d): Received unknown ATIO atio "
432 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
433 break;
434 }
435
436 return false;
437 }
438
439 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
440 struct rsp_que *rsp, response_t *pkt)
441 {
442 switch (pkt->entry_type) {
443 case CTIO_CRC2:
444 ql_dbg(ql_dbg_tgt, vha, 0xe073,
445 "qla_target(%d):%s: CRC2 Response pkt\n",
446 vha->vp_idx, __func__);
447 /* fall through */
448 case CTIO_TYPE7:
449 {
450 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
451 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
452 entry->vp_index);
453 if (unlikely(!host)) {
454 ql_dbg(ql_dbg_tgt, vha, 0xe041,
455 "qla_target(%d): Response pkt (CTIO_TYPE7) "
456 "received, with unknown vp_index %d\n",
457 vha->vp_idx, entry->vp_index);
458 break;
459 }
460 qlt_response_pkt(host, rsp, pkt);
461 break;
462 }
463
464 case IMMED_NOTIFY_TYPE:
465 {
466 struct scsi_qla_host *host;
467 struct imm_ntfy_from_isp *entry =
468 (struct imm_ntfy_from_isp *)pkt;
469
470 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
471 if (unlikely(!host)) {
472 ql_dbg(ql_dbg_tgt, vha, 0xe042,
473 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
474 "received, with unknown vp_index %d\n",
475 vha->vp_idx, entry->u.isp24.vp_index);
476 break;
477 }
478 qlt_response_pkt(host, rsp, pkt);
479 break;
480 }
481
482 case NOTIFY_ACK_TYPE:
483 {
484 struct scsi_qla_host *host = vha;
485 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
486
487 if (0xFF != entry->u.isp24.vp_index) {
488 host = qlt_find_host_by_vp_idx(vha,
489 entry->u.isp24.vp_index);
490 if (unlikely(!host)) {
491 ql_dbg(ql_dbg_tgt, vha, 0xe043,
492 "qla_target(%d): Response "
493 "pkt (NOTIFY_ACK_TYPE) "
494 "received, with unknown "
495 "vp_index %d\n", vha->vp_idx,
496 entry->u.isp24.vp_index);
497 break;
498 }
499 }
500 qlt_response_pkt(host, rsp, pkt);
501 break;
502 }
503
504 case ABTS_RECV_24XX:
505 {
506 struct abts_recv_from_24xx *entry =
507 (struct abts_recv_from_24xx *)pkt;
508 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
509 entry->vp_index);
510 if (unlikely(!host)) {
511 ql_dbg(ql_dbg_tgt, vha, 0xe044,
512 "qla_target(%d): Response pkt "
513 "(ABTS_RECV_24XX) received, with unknown "
514 "vp_index %d\n", vha->vp_idx, entry->vp_index);
515 break;
516 }
517 qlt_response_pkt(host, rsp, pkt);
518 break;
519 }
520
521 case ABTS_RESP_24XX:
522 {
523 struct abts_resp_to_24xx *entry =
524 (struct abts_resp_to_24xx *)pkt;
525 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
526 entry->vp_index);
527 if (unlikely(!host)) {
528 ql_dbg(ql_dbg_tgt, vha, 0xe045,
529 "qla_target(%d): Response pkt "
530 "(ABTS_RECV_24XX) received, with unknown "
531 "vp_index %d\n", vha->vp_idx, entry->vp_index);
532 break;
533 }
534 qlt_response_pkt(host, rsp, pkt);
535 break;
536 }
537 default:
538 qlt_response_pkt(vha, rsp, pkt);
539 break;
540 }
541
542 }
543
544 /*
545 * All qlt_plogi_ack_t operations are protected by hardware_lock
546 */
547 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
548 struct imm_ntfy_from_isp *ntfy, int type)
549 {
550 struct qla_work_evt *e;
551
552 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
553 if (!e)
554 return QLA_FUNCTION_FAILED;
555
556 e->u.nack.fcport = fcport;
557 e->u.nack.type = type;
558 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
559 return qla2x00_post_work(vha, e);
560 }
561
562 static void qla2x00_async_nack_sp_done(srb_t *sp, int res)
563 {
564 struct scsi_qla_host *vha = sp->vha;
565 unsigned long flags;
566
567 ql_dbg(ql_dbg_disc, vha, 0x20f2,
568 "Async done-%s res %x %8phC type %d\n",
569 sp->name, res, sp->fcport->port_name, sp->type);
570
571 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
572 sp->fcport->flags &= ~FCF_ASYNC_SENT;
573 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
574
575 switch (sp->type) {
576 case SRB_NACK_PLOGI:
577 sp->fcport->login_gen++;
578 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
579 sp->fcport->logout_on_delete = 1;
580 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
581 sp->fcport->send_els_logo = 0;
582 break;
583
584 case SRB_NACK_PRLI:
585 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
586 sp->fcport->deleted = 0;
587 sp->fcport->send_els_logo = 0;
588
589 if (!sp->fcport->login_succ &&
590 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
591 sp->fcport->login_succ = 1;
592
593 vha->fcport_count++;
594 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
595 qla24xx_sched_upd_fcport(sp->fcport);
596 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
597 } else {
598 sp->fcport->login_retry = 0;
599 qla2x00_set_fcport_disc_state(sp->fcport,
600 DSC_LOGIN_COMPLETE);
601 sp->fcport->deleted = 0;
602 sp->fcport->logout_on_delete = 1;
603 }
604 break;
605
606 case SRB_NACK_LOGO:
607 sp->fcport->login_gen++;
608 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
609 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
610 break;
611 }
612 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
613
614 sp->free(sp);
615 }
616
617 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
618 struct imm_ntfy_from_isp *ntfy, int type)
619 {
620 int rval = QLA_FUNCTION_FAILED;
621 srb_t *sp;
622 char *c = NULL;
623
624 fcport->flags |= FCF_ASYNC_SENT;
625 switch (type) {
626 case SRB_NACK_PLOGI:
627 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
628 c = "PLOGI";
629 break;
630 case SRB_NACK_PRLI:
631 fcport->fw_login_state = DSC_LS_PRLI_PEND;
632 fcport->deleted = 0;
633 c = "PRLI";
634 break;
635 case SRB_NACK_LOGO:
636 fcport->fw_login_state = DSC_LS_LOGO_PEND;
637 c = "LOGO";
638 break;
639 }
640
641 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
642 if (!sp)
643 goto done;
644
645 sp->type = type;
646 sp->name = "nack";
647
648 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
649 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
650
651 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
652 sp->done = qla2x00_async_nack_sp_done;
653
654 ql_dbg(ql_dbg_disc, vha, 0x20f4,
655 "Async-%s %8phC hndl %x %s\n",
656 sp->name, fcport->port_name, sp->handle, c);
657
658 rval = qla2x00_start_sp(sp);
659 if (rval != QLA_SUCCESS)
660 goto done_free_sp;
661
662 return rval;
663
664 done_free_sp:
665 sp->free(sp);
666 done:
667 fcport->flags &= ~FCF_ASYNC_SENT;
668 return rval;
669 }
670
671 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
672 {
673 fc_port_t *t;
674
675 switch (e->u.nack.type) {
676 case SRB_NACK_PRLI:
677 t = e->u.nack.fcport;
678 flush_work(&t->del_work);
679 flush_work(&t->free_work);
680 mutex_lock(&vha->vha_tgt.tgt_mutex);
681 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
682 mutex_unlock(&vha->vha_tgt.tgt_mutex);
683 if (t) {
684 ql_log(ql_log_info, vha, 0xd034,
685 "%s create sess success %p", __func__, t);
686 /* create sess has an extra kref */
687 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
688 }
689 break;
690 }
691 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
692 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type);
693 }
694
695 void qla24xx_delete_sess_fn(struct work_struct *work)
696 {
697 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
698 struct qla_hw_data *ha = fcport->vha->hw;
699
700 if (fcport->se_sess) {
701 ha->tgt.tgt_ops->shutdown_sess(fcport);
702 ha->tgt.tgt_ops->put_sess(fcport);
703 } else {
704 qlt_unreg_sess(fcport);
705 }
706 }
707
708 /*
709 * Called from qla2x00_reg_remote_port()
710 */
711 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
712 {
713 struct qla_hw_data *ha = vha->hw;
714 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
715 struct fc_port *sess = fcport;
716 unsigned long flags;
717
718 if (!vha->hw->tgt.tgt_ops)
719 return;
720
721 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
722 if (tgt->tgt_stop) {
723 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
724 return;
725 }
726
727 if (fcport->disc_state == DSC_DELETE_PEND) {
728 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
729 return;
730 }
731
732 if (!sess->se_sess) {
733 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
734
735 mutex_lock(&vha->vha_tgt.tgt_mutex);
736 sess = qlt_create_sess(vha, fcport, false);
737 mutex_unlock(&vha->vha_tgt.tgt_mutex);
738
739 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
740 } else {
741 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
742 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
743 return;
744 }
745
746 if (!kref_get_unless_zero(&sess->sess_kref)) {
747 ql_dbg(ql_dbg_disc, vha, 0x2107,
748 "%s: kref_get fail sess %8phC \n",
749 __func__, sess->port_name);
750 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
751 return;
752 }
753
754 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
755 "qla_target(%u): %ssession for port %8phC "
756 "(loop ID %d) reappeared\n", vha->vp_idx,
757 sess->local ? "local " : "", sess->port_name, sess->loop_id);
758
759 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
760 "Reappeared sess %p\n", sess);
761
762 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
763 fcport->loop_id,
764 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
765 }
766
767 if (sess && sess->local) {
768 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
769 "qla_target(%u): local session for "
770 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
771 fcport->port_name, sess->loop_id);
772 sess->local = 0;
773 }
774 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
775
776 ha->tgt.tgt_ops->put_sess(sess);
777 }
778
779 /*
780 * This is a zero-base ref-counting solution, since hardware_lock
781 * guarantees that ref_count is not modified concurrently.
782 * Upon successful return content of iocb is undefined
783 */
784 static struct qlt_plogi_ack_t *
785 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
786 struct imm_ntfy_from_isp *iocb)
787 {
788 struct qlt_plogi_ack_t *pla;
789
790 lockdep_assert_held(&vha->hw->hardware_lock);
791
792 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
793 if (pla->id.b24 == id->b24) {
794 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d,
795 "%s %d %8phC Term INOT due to new INOT",
796 __func__, __LINE__,
797 pla->iocb.u.isp24.port_name);
798 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
799 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
800 return pla;
801 }
802 }
803
804 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
805 if (!pla) {
806 ql_dbg(ql_dbg_async, vha, 0x5088,
807 "qla_target(%d): Allocation of plogi_ack failed\n",
808 vha->vp_idx);
809 return NULL;
810 }
811
812 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
813 pla->id = *id;
814 list_add_tail(&pla->list, &vha->plogi_ack_list);
815
816 return pla;
817 }
818
819 void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
820 struct qlt_plogi_ack_t *pla)
821 {
822 struct imm_ntfy_from_isp *iocb = &pla->iocb;
823 port_id_t port_id;
824 uint16_t loop_id;
825 fc_port_t *fcport = pla->fcport;
826
827 BUG_ON(!pla->ref_count);
828 pla->ref_count--;
829
830 if (pla->ref_count)
831 return;
832
833 ql_dbg(ql_dbg_disc, vha, 0x5089,
834 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
835 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
836 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
837 iocb->u.isp24.port_id[0],
838 le16_to_cpu(iocb->u.isp24.nport_handle),
839 iocb->u.isp24.exchange_address, iocb->ox_id);
840
841 port_id.b.domain = iocb->u.isp24.port_id[2];
842 port_id.b.area = iocb->u.isp24.port_id[1];
843 port_id.b.al_pa = iocb->u.isp24.port_id[0];
844 port_id.b.rsvd_1 = 0;
845
846 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
847
848 fcport->loop_id = loop_id;
849 fcport->d_id = port_id;
850 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
851 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
852 else
853 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
854
855 list_for_each_entry(fcport, &vha->vp_fcports, list) {
856 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
857 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
858 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
859 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
860 }
861
862 list_del(&pla->list);
863 kmem_cache_free(qla_tgt_plogi_cachep, pla);
864 }
865
866 void
867 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
868 struct fc_port *sess, enum qlt_plogi_link_t link)
869 {
870 struct imm_ntfy_from_isp *iocb = &pla->iocb;
871 /* Inc ref_count first because link might already be pointing at pla */
872 pla->ref_count++;
873
874 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
875 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
876 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
877 sess, link, sess->port_name,
878 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
879 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
880 pla->ref_count, pla, link);
881
882 if (link == QLT_PLOGI_LINK_CONFLICT) {
883 switch (sess->disc_state) {
884 case DSC_DELETED:
885 case DSC_DELETE_PEND:
886 pla->ref_count--;
887 return;
888 default:
889 break;
890 }
891 }
892
893 if (sess->plogi_link[link])
894 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
895
896 if (link == QLT_PLOGI_LINK_SAME_WWN)
897 pla->fcport = sess;
898
899 sess->plogi_link[link] = pla;
900 }
901
902 typedef struct {
903 /* These fields must be initialized by the caller */
904 port_id_t id;
905 /*
906 * number of cmds dropped while we were waiting for
907 * initiator to ack LOGO initialize to 1 if LOGO is
908 * triggered by a command, otherwise, to 0
909 */
910 int cmd_count;
911
912 /* These fields are used by callee */
913 struct list_head list;
914 } qlt_port_logo_t;
915
916 static void
917 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
918 {
919 qlt_port_logo_t *tmp;
920 int res;
921
922 mutex_lock(&vha->vha_tgt.tgt_mutex);
923
924 list_for_each_entry(tmp, &vha->logo_list, list) {
925 if (tmp->id.b24 == logo->id.b24) {
926 tmp->cmd_count += logo->cmd_count;
927 mutex_unlock(&vha->vha_tgt.tgt_mutex);
928 return;
929 }
930 }
931
932 list_add_tail(&logo->list, &vha->logo_list);
933
934 mutex_unlock(&vha->vha_tgt.tgt_mutex);
935
936 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
937
938 mutex_lock(&vha->vha_tgt.tgt_mutex);
939 list_del(&logo->list);
940 mutex_unlock(&vha->vha_tgt.tgt_mutex);
941
942 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
943 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
944 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
945 logo->cmd_count, res);
946 }
947
948 void qlt_free_session_done(struct work_struct *work)
949 {
950 struct fc_port *sess = container_of(work, struct fc_port,
951 free_work);
952 struct qla_tgt *tgt = sess->tgt;
953 struct scsi_qla_host *vha = sess->vha;
954 struct qla_hw_data *ha = vha->hw;
955 unsigned long flags;
956 bool logout_started = false;
957 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
958 struct qlt_plogi_ack_t *own =
959 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
960
961 ql_dbg(ql_dbg_disc, vha, 0xf084,
962 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
963 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
964 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
965 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
966 sess->logout_on_delete, sess->keep_nport_handle,
967 sess->send_els_logo);
968
969 if (!IS_SW_RESV_ADDR(sess->d_id)) {
970 qla2x00_mark_device_lost(vha, sess, 0);
971
972 if (sess->send_els_logo) {
973 qlt_port_logo_t logo;
974
975 logo.id = sess->d_id;
976 logo.cmd_count = 0;
977 if (!own)
978 qlt_send_first_logo(vha, &logo);
979 sess->send_els_logo = 0;
980 }
981
982 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
983 int rc;
984
985 if (!own ||
986 (own &&
987 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
988 rc = qla2x00_post_async_logout_work(vha, sess,
989 NULL);
990 if (rc != QLA_SUCCESS)
991 ql_log(ql_log_warn, vha, 0xf085,
992 "Schedule logo failed sess %p rc %d\n",
993 sess, rc);
994 else
995 logout_started = true;
996 } else if (own && (own->iocb.u.isp24.status_subcode ==
997 ELS_PRLI) && ha->flags.rida_fmt2) {
998 rc = qla2x00_post_async_prlo_work(vha, sess,
999 NULL);
1000 if (rc != QLA_SUCCESS)
1001 ql_log(ql_log_warn, vha, 0xf085,
1002 "Schedule PRLO failed sess %p rc %d\n",
1003 sess, rc);
1004 else
1005 logout_started = true;
1006 }
1007 } /* if sess->logout_on_delete */
1008
1009 if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
1010 !(sess->nvme_flag & NVME_FLAG_DELETING)) {
1011 sess->nvme_flag |= NVME_FLAG_DELETING;
1012 qla_nvme_unregister_remote_port(sess);
1013 }
1014 }
1015
1016 /*
1017 * Release the target session for FC Nexus from fabric module code.
1018 */
1019 if (sess->se_sess != NULL)
1020 ha->tgt.tgt_ops->free_session(sess);
1021
1022 if (logout_started) {
1023 bool traced = false;
1024 u16 cnt = 0;
1025
1026 while (!READ_ONCE(sess->logout_completed)) {
1027 if (!traced) {
1028 ql_dbg(ql_dbg_disc, vha, 0xf086,
1029 "%s: waiting for sess %p logout\n",
1030 __func__, sess);
1031 traced = true;
1032 }
1033 msleep(100);
1034 cnt++;
1035 if (cnt > 200)
1036 break;
1037 }
1038
1039 ql_dbg(ql_dbg_disc, vha, 0xf087,
1040 "%s: sess %p logout completed\n", __func__, sess);
1041 }
1042
1043 if (sess->logo_ack_needed) {
1044 sess->logo_ack_needed = 0;
1045 qla24xx_async_notify_ack(vha, sess,
1046 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
1047 }
1048
1049 spin_lock_irqsave(&vha->work_lock, flags);
1050 sess->flags &= ~FCF_ASYNC_SENT;
1051 spin_unlock_irqrestore(&vha->work_lock, flags);
1052
1053 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1054 if (sess->se_sess) {
1055 sess->se_sess = NULL;
1056 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1057 tgt->sess_count--;
1058 }
1059
1060 qla2x00_set_fcport_disc_state(sess, DSC_DELETED);
1061 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1062 sess->deleted = QLA_SESS_DELETED;
1063
1064 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1065 vha->fcport_count--;
1066 sess->login_succ = 0;
1067 }
1068
1069 qla2x00_clear_loop_id(sess);
1070
1071 if (sess->conflict) {
1072 sess->conflict->login_pause = 0;
1073 sess->conflict = NULL;
1074 if (!test_bit(UNLOADING, &vha->dpc_flags))
1075 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1076 }
1077
1078 {
1079 struct qlt_plogi_ack_t *con =
1080 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
1081 struct imm_ntfy_from_isp *iocb;
1082
1083 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
1084
1085 if (con) {
1086 iocb = &con->iocb;
1087 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
1088 "se_sess %p / sess %p port %8phC is gone,"
1089 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1090 sess->se_sess, sess, sess->port_name,
1091 own ? "releasing own PLOGI" : "no own PLOGI pending",
1092 own ? own->ref_count : -1,
1093 iocb->u.isp24.port_name, con->ref_count);
1094 qlt_plogi_ack_unref(vha, con);
1095 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
1096 } else {
1097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1098 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1099 sess->se_sess, sess, sess->port_name,
1100 own ? "releasing own PLOGI" :
1101 "no own PLOGI pending",
1102 own ? own->ref_count : -1);
1103 }
1104
1105 if (own) {
1106 sess->fw_login_state = DSC_LS_PLOGI_PEND;
1107 qlt_plogi_ack_unref(vha, own);
1108 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1109 }
1110 }
1111
1112 sess->explicit_logout = 0;
1113 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1114 sess->free_pending = 0;
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 (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1235 wake_up_all(&tgt->waitQ);
1236 if (sess->vha->fcport_count == 0)
1237 wake_up_all(&sess->vha->fcport_waitQ);
1238
1239 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1240 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
1241 return;
1242 break;
1243 case DSC_UPD_FCPORT:
1244 /*
1245 * This port is not done reporting to upper layer.
1246 * let it finish
1247 */
1248 sess->next_disc_state = DSC_DELETE_PEND;
1249 sec = jiffies_to_msecs(jiffies -
1250 sess->jiffies_at_registration)/1000;
1251 if (sess->sec_since_registration < sec && sec && !(sec % 5)) {
1252 sess->sec_since_registration = sec;
1253 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
1254 "%s %8phC : Slow Rport registration(%d Sec)\n",
1255 __func__, sess->port_name, sec);
1256 }
1257 return;
1258 default:
1259 break;
1260 }
1261
1262 spin_lock_irqsave(&sess->vha->work_lock, flags);
1263 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1264 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1265 return;
1266 }
1267 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1268 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1269
1270 sess->prli_pend_timer = 0;
1271 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
1272
1273 qla24xx_chk_fcp_state(sess);
1274
1275 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1276 "Scheduling sess %p for deletion %8phC\n",
1277 sess, sess->port_name);
1278
1279 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
1280 }
1281
1282 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
1283 {
1284 struct fc_port *sess;
1285 scsi_qla_host_t *vha = tgt->vha;
1286
1287 list_for_each_entry(sess, &vha->vp_fcports, list) {
1288 if (sess->se_sess)
1289 qlt_schedule_sess_for_deletion(sess);
1290 }
1291
1292 /* At this point tgt could be already dead */
1293 }
1294
1295 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id,
1296 uint16_t *loop_id)
1297 {
1298 struct qla_hw_data *ha = vha->hw;
1299 dma_addr_t gid_list_dma;
1300 struct gid_list_info *gid_list, *gid;
1301 int res, rc, i;
1302 uint16_t entries;
1303
1304 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1305 &gid_list_dma, GFP_KERNEL);
1306 if (!gid_list) {
1307 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1308 "qla_target(%d): DMA Alloc failed of %u\n",
1309 vha->vp_idx, qla2x00_gid_list_size(ha));
1310 return -ENOMEM;
1311 }
1312
1313 /* Get list of logged in devices */
1314 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
1315 if (rc != QLA_SUCCESS) {
1316 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1317 "qla_target(%d): get_id_list() failed: %x\n",
1318 vha->vp_idx, rc);
1319 res = -EBUSY;
1320 goto out_free_id_list;
1321 }
1322
1323 gid = gid_list;
1324 res = -ENOENT;
1325 for (i = 0; i < entries; i++) {
1326 if (gid->al_pa == s_id.al_pa &&
1327 gid->area == s_id.area &&
1328 gid->domain == s_id.domain) {
1329 *loop_id = le16_to_cpu(gid->loop_id);
1330 res = 0;
1331 break;
1332 }
1333 gid = (void *)gid + ha->gid_list_info_size;
1334 }
1335
1336 out_free_id_list:
1337 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1338 gid_list, gid_list_dma);
1339 return res;
1340 }
1341
1342 /*
1343 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1344 * Caller must put it.
1345 */
1346 static struct fc_port *qlt_create_sess(
1347 struct scsi_qla_host *vha,
1348 fc_port_t *fcport,
1349 bool local)
1350 {
1351 struct qla_hw_data *ha = vha->hw;
1352 struct fc_port *sess = fcport;
1353 unsigned long flags;
1354
1355 if (vha->vha_tgt.qla_tgt->tgt_stop)
1356 return NULL;
1357
1358 if (fcport->se_sess) {
1359 if (!kref_get_unless_zero(&sess->sess_kref)) {
1360 ql_dbg(ql_dbg_disc, vha, 0x20f6,
1361 "%s: kref_get_unless_zero failed for %8phC\n",
1362 __func__, sess->port_name);
1363 return NULL;
1364 }
1365 return fcport;
1366 }
1367 sess->tgt = vha->vha_tgt.qla_tgt;
1368 sess->local = local;
1369
1370 /*
1371 * Under normal circumstances we want to logout from firmware when
1372 * session eventually ends and release corresponding nport handle.
1373 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
1374 * code will adjust these flags as necessary.
1375 */
1376 sess->logout_on_delete = 1;
1377 sess->keep_nport_handle = 0;
1378 sess->logout_completed = 0;
1379
1380 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1381 &fcport->port_name[0], sess) < 0) {
1382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
1383 "(%d) %8phC check_initiator_node_acl failed\n",
1384 vha->vp_idx, fcport->port_name);
1385 return NULL;
1386 } else {
1387 kref_init(&fcport->sess_kref);
1388 /*
1389 * Take an extra reference to ->sess_kref here to handle
1390 * fc_port access across ->tgt.sess_lock reaquire.
1391 */
1392 if (!kref_get_unless_zero(&sess->sess_kref)) {
1393 ql_dbg(ql_dbg_disc, vha, 0x20f7,
1394 "%s: kref_get_unless_zero failed for %8phC\n",
1395 __func__, sess->port_name);
1396 return NULL;
1397 }
1398
1399 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1400 if (!IS_SW_RESV_ADDR(sess->d_id))
1401 vha->vha_tgt.qla_tgt->sess_count++;
1402
1403 qlt_do_generation_tick(vha, &sess->generation);
1404 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1405 }
1406
1407 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1408 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1409 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1410 vha->vha_tgt.qla_tgt->sess_count);
1411
1412 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
1413 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1414 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1415 vha->vp_idx, local ? "local " : "", fcport->port_name,
1416 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1417 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
1418
1419 return sess;
1420 }
1421
1422 /*
1423 * max_gen - specifies maximum session generation
1424 * at which this deletion requestion is still valid
1425 */
1426 void
1427 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
1428 {
1429 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1430 struct fc_port *sess = fcport;
1431 unsigned long flags;
1432
1433 if (!vha->hw->tgt.tgt_ops)
1434 return;
1435
1436 if (!tgt)
1437 return;
1438
1439 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
1440 if (tgt->tgt_stop) {
1441 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1442 return;
1443 }
1444 if (!sess->se_sess) {
1445 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1446 return;
1447 }
1448
1449 if (max_gen - sess->generation < 0) {
1450 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1452 "Ignoring stale deletion request for se_sess %p / sess %p"
1453 " for port %8phC, req_gen %d, sess_gen %d\n",
1454 sess->se_sess, sess, sess->port_name, max_gen,
1455 sess->generation);
1456 return;
1457 }
1458
1459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1460
1461 sess->local = 1;
1462 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1463 qlt_schedule_sess_for_deletion(sess);
1464 }
1465
1466 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1467 {
1468 struct qla_hw_data *ha = tgt->ha;
1469 unsigned long flags;
1470 int res;
1471 /*
1472 * We need to protect against race, when tgt is freed before or
1473 * inside wake_up()
1474 */
1475 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1476 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1477 "tgt %p, sess_count=%d\n",
1478 tgt, tgt->sess_count);
1479 res = (tgt->sess_count == 0);
1480 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1481
1482 return res;
1483 }
1484
1485 /* Called by tcm_qla2xxx configfs code */
1486 int qlt_stop_phase1(struct qla_tgt *tgt)
1487 {
1488 struct scsi_qla_host *vha = tgt->vha;
1489 struct qla_hw_data *ha = tgt->ha;
1490 unsigned long flags;
1491
1492 mutex_lock(&ha->optrom_mutex);
1493 mutex_lock(&qla_tgt_mutex);
1494
1495 if (tgt->tgt_stop || tgt->tgt_stopped) {
1496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1497 "Already in tgt->tgt_stop or tgt_stopped state\n");
1498 mutex_unlock(&qla_tgt_mutex);
1499 mutex_unlock(&ha->optrom_mutex);
1500 return -EPERM;
1501 }
1502
1503 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1504 vha->host_no, vha);
1505 /*
1506 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1507 * Lock is needed, because we still can get an incoming packet.
1508 */
1509 mutex_lock(&vha->vha_tgt.tgt_mutex);
1510 tgt->tgt_stop = 1;
1511 qlt_clear_tgt_db(tgt);
1512 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1513 mutex_unlock(&qla_tgt_mutex);
1514
1515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1516 "Waiting for sess works (tgt %p)", tgt);
1517 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1518 while (!list_empty(&tgt->sess_works_list)) {
1519 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1520 flush_scheduled_work();
1521 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1522 }
1523 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1524
1525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1526 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
1527
1528 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1529
1530 /* Big hammer */
1531 if (!ha->flags.host_shutting_down &&
1532 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
1533 qlt_disable_vha(vha);
1534
1535 /* Wait for sessions to clear out (just in case) */
1536 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1537 mutex_unlock(&ha->optrom_mutex);
1538
1539 return 0;
1540 }
1541 EXPORT_SYMBOL(qlt_stop_phase1);
1542
1543 /* Called by tcm_qla2xxx configfs code */
1544 void qlt_stop_phase2(struct qla_tgt *tgt)
1545 {
1546 scsi_qla_host_t *vha = tgt->vha;
1547
1548 if (tgt->tgt_stopped) {
1549 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1550 "Already in tgt->tgt_stopped state\n");
1551 dump_stack();
1552 return;
1553 }
1554 if (!tgt->tgt_stop) {
1555 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1556 "%s: phase1 stop is not completed\n", __func__);
1557 dump_stack();
1558 return;
1559 }
1560
1561 mutex_lock(&vha->vha_tgt.tgt_mutex);
1562 tgt->tgt_stop = 0;
1563 tgt->tgt_stopped = 1;
1564 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1565
1566 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
1567 tgt);
1568
1569 switch (vha->qlini_mode) {
1570 case QLA2XXX_INI_MODE_EXCLUSIVE:
1571 vha->flags.online = 1;
1572 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1573 break;
1574 default:
1575 break;
1576 }
1577 }
1578 EXPORT_SYMBOL(qlt_stop_phase2);
1579
1580 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1581 static void qlt_release(struct qla_tgt *tgt)
1582 {
1583 scsi_qla_host_t *vha = tgt->vha;
1584 void *node;
1585 u64 key = 0;
1586 u16 i;
1587 struct qla_qpair_hint *h;
1588 struct qla_hw_data *ha = vha->hw;
1589
1590 if (!tgt->tgt_stop && !tgt->tgt_stopped)
1591 qlt_stop_phase1(tgt);
1592
1593 if (!tgt->tgt_stopped)
1594 qlt_stop_phase2(tgt);
1595
1596 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1597 unsigned long flags;
1598
1599 h = &tgt->qphints[i];
1600 if (h->qpair) {
1601 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1602 list_del(&h->hint_elem);
1603 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1604 h->qpair = NULL;
1605 }
1606 }
1607 kfree(tgt->qphints);
1608 mutex_lock(&qla_tgt_mutex);
1609 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1610 mutex_unlock(&qla_tgt_mutex);
1611
1612 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1613 btree_remove64(&tgt->lun_qpair_map, key);
1614
1615 btree_destroy64(&tgt->lun_qpair_map);
1616
1617 if (vha->vp_idx)
1618 if (ha->tgt.tgt_ops &&
1619 ha->tgt.tgt_ops->remove_target &&
1620 vha->vha_tgt.target_lport_ptr)
1621 ha->tgt.tgt_ops->remove_target(vha);
1622
1623 vha->vha_tgt.qla_tgt = NULL;
1624
1625 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1626 "Release of tgt %p finished\n", tgt);
1627
1628 kfree(tgt);
1629 }
1630
1631 /* ha->hardware_lock supposed to be held on entry */
1632 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1633 const void *param, unsigned int param_size)
1634 {
1635 struct qla_tgt_sess_work_param *prm;
1636 unsigned long flags;
1637
1638 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1639 if (!prm) {
1640 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1641 "qla_target(%d): Unable to create session "
1642 "work, command will be refused", 0);
1643 return -ENOMEM;
1644 }
1645
1646 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1647 "Scheduling work (type %d, prm %p)"
1648 " to find session for param %p (size %d, tgt %p)\n",
1649 type, prm, param, param_size, tgt);
1650
1651 prm->type = type;
1652 memcpy(&prm->tm_iocb, param, param_size);
1653
1654 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1655 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1656 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1657
1658 schedule_work(&tgt->sess_work);
1659
1660 return 0;
1661 }
1662
1663 /*
1664 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1665 */
1666 static void qlt_send_notify_ack(struct qla_qpair *qpair,
1667 struct imm_ntfy_from_isp *ntfy,
1668 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1669 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1670 {
1671 struct scsi_qla_host *vha = qpair->vha;
1672 struct qla_hw_data *ha = vha->hw;
1673 request_t *pkt;
1674 struct nack_to_isp *nack;
1675
1676 if (!ha->flags.fw_started)
1677 return;
1678
1679 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1680
1681 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
1682 if (!pkt) {
1683 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1684 "qla_target(%d): %s failed: unable to allocate "
1685 "request packet\n", vha->vp_idx, __func__);
1686 return;
1687 }
1688
1689 if (vha->vha_tgt.qla_tgt != NULL)
1690 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1691
1692 pkt->entry_type = NOTIFY_ACK_TYPE;
1693 pkt->entry_count = 1;
1694
1695 nack = (struct nack_to_isp *)pkt;
1696 nack->ox_id = ntfy->ox_id;
1697
1698 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
1699 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1700 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1701 nack->u.isp24.flags = ntfy->u.isp24.flags &
1702 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1703 }
1704 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1705 nack->u.isp24.status = ntfy->u.isp24.status;
1706 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1707 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1708 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1709 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1710 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1711 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1712 nack->u.isp24.srr_reject_code = srr_reject_code;
1713 nack->u.isp24.srr_reject_code_expl = srr_explan;
1714 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1715
1716 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1717 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1718 vha->vp_idx, nack->u.isp24.status);
1719
1720 /* Memory Barrier */
1721 wmb();
1722 qla2x00_start_iocbs(vha, qpair->req);
1723 }
1724
1725 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd)
1726 {
1727 struct scsi_qla_host *vha = mcmd->vha;
1728 struct qla_hw_data *ha = vha->hw;
1729 struct abts_resp_to_24xx *resp;
1730 uint32_t f_ctl, h;
1731 uint8_t *p;
1732 int rc;
1733 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts;
1734 struct qla_qpair *qpair = mcmd->qpair;
1735
1736 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1737 "Sending task mgmt ABTS response (ha=%p, status=%x)\n",
1738 ha, mcmd->fc_tm_rsp);
1739
1740 rc = qlt_check_reserve_free_req(qpair, 1);
1741 if (rc) {
1742 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1743 "qla_target(%d): %s failed: unable to allocate request packet\n",
1744 vha->vp_idx, __func__);
1745 return -EAGAIN;
1746 }
1747
1748 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr;
1749 memset(resp, 0, sizeof(*resp));
1750
1751 h = qlt_make_handle(qpair);
1752 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1753 /*
1754 * CTIO type 7 from the firmware doesn't provide a way to
1755 * know the initiator's LOOP ID, hence we can't find
1756 * the session and, so, the command.
1757 */
1758 return -EAGAIN;
1759 } else {
1760 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd;
1761 }
1762
1763 resp->handle = MAKE_HANDLE(qpair->req->id, h);
1764 resp->entry_type = ABTS_RESP_24XX;
1765 resp->entry_count = 1;
1766 resp->nport_handle = abts->nport_handle;
1767 resp->vp_index = vha->vp_idx;
1768 resp->sof_type = abts->sof_type;
1769 resp->exchange_address = abts->exchange_address;
1770 resp->fcp_hdr_le = abts->fcp_hdr_le;
1771 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1772 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1773 F_CTL_SEQ_INITIATIVE);
1774 p = (uint8_t *)&f_ctl;
1775 resp->fcp_hdr_le.f_ctl[0] = *p++;
1776 resp->fcp_hdr_le.f_ctl[1] = *p++;
1777 resp->fcp_hdr_le.f_ctl[2] = *p;
1778
1779 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1780 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
1781
1782 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1783 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) {
1784 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1785 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1786 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1787 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1788 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1789 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1790 } else {
1791 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1792 resp->payload.ba_rjt.reason_code =
1793 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1794 /* Other bytes are zero */
1795 }
1796
1797 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1798
1799 /* Memory Barrier */
1800 wmb();
1801 if (qpair->reqq_start_iocbs)
1802 qpair->reqq_start_iocbs(qpair);
1803 else
1804 qla2x00_start_iocbs(vha, qpair->req);
1805
1806 return rc;
1807 }
1808
1809 /*
1810 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1811 */
1812 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
1813 struct abts_recv_from_24xx *abts, uint32_t status,
1814 bool ids_reversed)
1815 {
1816 struct scsi_qla_host *vha = qpair->vha;
1817 struct qla_hw_data *ha = vha->hw;
1818 struct abts_resp_to_24xx *resp;
1819 uint32_t f_ctl;
1820 uint8_t *p;
1821
1822 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1823 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1824 ha, abts, status);
1825
1826 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1827 NULL);
1828 if (!resp) {
1829 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1830 "qla_target(%d): %s failed: unable to allocate "
1831 "request packet", vha->vp_idx, __func__);
1832 return;
1833 }
1834
1835 resp->entry_type = ABTS_RESP_24XX;
1836 resp->handle = QLA_TGT_SKIP_HANDLE;
1837 resp->entry_count = 1;
1838 resp->nport_handle = abts->nport_handle;
1839 resp->vp_index = vha->vp_idx;
1840 resp->sof_type = abts->sof_type;
1841 resp->exchange_address = abts->exchange_address;
1842 resp->fcp_hdr_le = abts->fcp_hdr_le;
1843 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1844 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1845 F_CTL_SEQ_INITIATIVE);
1846 p = (uint8_t *)&f_ctl;
1847 resp->fcp_hdr_le.f_ctl[0] = *p++;
1848 resp->fcp_hdr_le.f_ctl[1] = *p++;
1849 resp->fcp_hdr_le.f_ctl[2] = *p;
1850 if (ids_reversed) {
1851 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id;
1852 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id;
1853 } else {
1854 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1855 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
1856 }
1857 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1858 if (status == FCP_TMF_CMPL) {
1859 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1860 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1861 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1862 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1863 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1864 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1865 } else {
1866 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1867 resp->payload.ba_rjt.reason_code =
1868 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1869 /* Other bytes are zero */
1870 }
1871
1872 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1873
1874 /* Memory Barrier */
1875 wmb();
1876 if (qpair->reqq_start_iocbs)
1877 qpair->reqq_start_iocbs(qpair);
1878 else
1879 qla2x00_start_iocbs(vha, qpair->req);
1880 }
1881
1882 /*
1883 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1884 */
1885 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1886 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd)
1887 {
1888 struct ctio7_to_24xx *ctio;
1889 u16 tmp;
1890 struct abts_recv_from_24xx *entry;
1891
1892 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL);
1893 if (ctio == NULL) {
1894 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1895 "qla_target(%d): %s failed: unable to allocate "
1896 "request packet\n", vha->vp_idx, __func__);
1897 return;
1898 }
1899
1900 if (mcmd)
1901 /* abts from remote port */
1902 entry = &mcmd->orig_iocb.abts;
1903 else
1904 /* abts from this driver. */
1905 entry = (struct abts_recv_from_24xx *)pkt;
1906
1907 /*
1908 * We've got on entrance firmware's response on by us generated
1909 * ABTS response. So, in it ID fields are reversed.
1910 */
1911
1912 ctio->entry_type = CTIO_TYPE7;
1913 ctio->entry_count = 1;
1914 ctio->nport_handle = entry->nport_handle;
1915 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1916 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1917 ctio->vp_index = vha->vp_idx;
1918 ctio->exchange_addr = entry->exchange_addr_to_abort;
1919 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
1920
1921 if (mcmd) {
1922 ctio->initiator_id = entry->fcp_hdr_le.s_id;
1923
1924 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID)
1925 tmp |= (mcmd->abort_io_attr << 9);
1926 else if (qpair->retry_term_cnt & 1)
1927 tmp |= (0x4 << 9);
1928 } else {
1929 ctio->initiator_id = entry->fcp_hdr_le.d_id;
1930
1931 if (qpair->retry_term_cnt & 1)
1932 tmp |= (0x4 << 9);
1933 }
1934 ctio->u.status1.flags = cpu_to_le16(tmp);
1935 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1936
1937 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1938 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n",
1939 le16_to_cpu(ctio->u.status1.flags),
1940 le16_to_cpu(ctio->u.status1.ox_id),
1941 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0);
1942
1943 /* Memory Barrier */
1944 wmb();
1945 if (qpair->reqq_start_iocbs)
1946 qpair->reqq_start_iocbs(qpair);
1947 else
1948 qla2x00_start_iocbs(vha, qpair->req);
1949
1950 if (mcmd)
1951 qlt_build_abts_resp_iocb(mcmd);
1952 else
1953 qlt_24xx_send_abts_resp(qpair,
1954 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true);
1955
1956 }
1957
1958 /* drop cmds for the given lun
1959 * XXX only looks for cmds on the port through which lun reset was recieved
1960 * XXX does not go through the list of other port (which may have cmds
1961 * for the same lun)
1962 */
1963 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id)
1964 {
1965 struct qla_tgt_sess_op *op;
1966 struct qla_tgt_cmd *cmd;
1967 uint32_t key;
1968 unsigned long flags;
1969
1970 key = sid_to_key(s_id);
1971 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1972 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1973 uint32_t op_key;
1974 u64 op_lun;
1975
1976 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1977 op_lun = scsilun_to_int(
1978 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1979 if (op_key == key && op_lun == lun)
1980 op->aborted = true;
1981 }
1982
1983 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1984 uint32_t op_key;
1985 u64 op_lun;
1986
1987 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1988 op_lun = scsilun_to_int(
1989 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1990 if (op_key == key && op_lun == lun)
1991 op->aborted = true;
1992 }
1993
1994 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1995 uint32_t cmd_key;
1996 u64 cmd_lun;
1997
1998 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1999 cmd_lun = scsilun_to_int(
2000 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
2001 if (cmd_key == key && cmd_lun == lun)
2002 cmd->aborted = 1;
2003 }
2004 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
2005 }
2006
2007 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha,
2008 uint64_t unpacked_lun)
2009 {
2010 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2011 struct qla_qpair_hint *h = NULL;
2012
2013 if (vha->flags.qpairs_available) {
2014 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun);
2015 if (!h)
2016 h = &tgt->qphints[0];
2017 } else {
2018 h = &tgt->qphints[0];
2019 }
2020
2021 return h;
2022 }
2023
2024 static void qlt_do_tmr_work(struct work_struct *work)
2025 {
2026 struct qla_tgt_mgmt_cmd *mcmd =
2027 container_of(work, struct qla_tgt_mgmt_cmd, work);
2028 struct qla_hw_data *ha = mcmd->vha->hw;
2029 int rc = EIO;
2030 uint32_t tag;
2031 unsigned long flags;
2032
2033 switch (mcmd->tmr_func) {
2034 case QLA_TGT_ABTS:
2035 tag = mcmd->orig_iocb.abts.exchange_addr_to_abort;
2036 break;
2037 default:
2038 tag = 0;
2039 break;
2040 }
2041
2042 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun,
2043 mcmd->tmr_func, tag);
2044
2045 if (rc != 0) {
2046 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags);
2047 switch (mcmd->tmr_func) {
2048 case QLA_TGT_ABTS:
2049 mcmd->fc_tm_rsp = FCP_TMF_REJECTED;
2050 qlt_build_abts_resp_iocb(mcmd);
2051 break;
2052 case QLA_TGT_LUN_RESET:
2053 case QLA_TGT_CLEAR_TS:
2054 case QLA_TGT_ABORT_TS:
2055 case QLA_TGT_CLEAR_ACA:
2056 case QLA_TGT_TARGET_RESET:
2057 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio,
2058 qla_sam_status);
2059 break;
2060
2061 case QLA_TGT_ABORT_ALL:
2062 case QLA_TGT_NEXUS_LOSS_SESS:
2063 case QLA_TGT_NEXUS_LOSS:
2064 qlt_send_notify_ack(mcmd->qpair,
2065 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2066 break;
2067 }
2068 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags);
2069
2070 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052,
2071 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2072 mcmd->vha->vp_idx, rc);
2073 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2074 }
2075 }
2076
2077 /* ha->hardware_lock supposed to be held on entry */
2078 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2079 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2080 {
2081 struct qla_hw_data *ha = vha->hw;
2082 struct qla_tgt_mgmt_cmd *mcmd;
2083 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
2084
2085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
2086 "qla_target(%d): task abort (tag=%d)\n",
2087 vha->vp_idx, abts->exchange_addr_to_abort);
2088
2089 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2090 if (mcmd == NULL) {
2091 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
2092 "qla_target(%d): %s: Allocation of ABORT cmd failed",
2093 vha->vp_idx, __func__);
2094 return -ENOMEM;
2095 }
2096 memset(mcmd, 0, sizeof(*mcmd));
2097 mcmd->cmd_type = TYPE_TGT_TMCMD;
2098 mcmd->sess = sess;
2099 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
2100 mcmd->reset_count = ha->base_qpair->chip_reset;
2101 mcmd->tmr_func = QLA_TGT_ABTS;
2102 mcmd->qpair = h->qpair;
2103 mcmd->vha = vha;
2104
2105 /*
2106 * LUN is looked up by target-core internally based on the passed
2107 * abts->exchange_addr_to_abort tag.
2108 */
2109 mcmd->se_cmd.cpuid = h->cpuid;
2110
2111 if (ha->tgt.tgt_ops->find_cmd_by_tag) {
2112 struct qla_tgt_cmd *abort_cmd;
2113
2114 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess,
2115 abts->exchange_addr_to_abort);
2116 if (abort_cmd && abort_cmd->qpair) {
2117 mcmd->qpair = abort_cmd->qpair;
2118 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid;
2119 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr;
2120 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID;
2121 }
2122 }
2123
2124 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
2125 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work);
2126
2127 return 0;
2128 }
2129
2130 /*
2131 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2132 */
2133 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2134 struct abts_recv_from_24xx *abts)
2135 {
2136 struct qla_hw_data *ha = vha->hw;
2137 struct fc_port *sess;
2138 uint32_t tag = abts->exchange_addr_to_abort;
2139 be_id_t s_id;
2140 int rc;
2141 unsigned long flags;
2142
2143 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
2144 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
2145 "qla_target(%d): ABTS: Abort Sequence not "
2146 "supported\n", vha->vp_idx);
2147 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2148 false);
2149 return;
2150 }
2151
2152 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2154 "qla_target(%d): ABTS: Unknown Exchange "
2155 "Address received\n", vha->vp_idx);
2156 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2157 false);
2158 return;
2159 }
2160
2161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2162 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2163 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain,
2164 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag,
2165 le32_to_cpu(abts->fcp_hdr_le.parameter));
2166
2167 s_id = le_id_to_be(abts->fcp_hdr_le.s_id);
2168
2169 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2170 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2171 if (!sess) {
2172 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2173 "qla_target(%d): task abort for non-existent session\n",
2174 vha->vp_idx);
2175 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2176
2177 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2178 false);
2179 return;
2180 }
2181 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2182
2183
2184 if (sess->deleted) {
2185 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2186 false);
2187 return;
2188 }
2189
2190 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2191 if (rc != 0) {
2192 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2193 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2194 vha->vp_idx, rc);
2195 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2196 false);
2197 return;
2198 }
2199 }
2200
2201 /*
2202 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2203 */
2204 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2205 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2206 {
2207 struct scsi_qla_host *ha = mcmd->vha;
2208 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2209 struct ctio7_to_24xx *ctio;
2210 uint16_t temp;
2211
2212 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2213 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2214 ha, atio, resp_code);
2215
2216
2217 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2218 if (ctio == NULL) {
2219 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2220 "qla_target(%d): %s failed: unable to allocate "
2221 "request packet\n", ha->vp_idx, __func__);
2222 return;
2223 }
2224
2225 ctio->entry_type = CTIO_TYPE7;
2226 ctio->entry_count = 1;
2227 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2228 ctio->nport_handle = mcmd->sess->loop_id;
2229 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2230 ctio->vp_index = ha->vp_idx;
2231 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2232 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2233 temp = (atio->u.isp24.attr << 9)|
2234 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2235 ctio->u.status1.flags = cpu_to_le16(temp);
2236 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2237 ctio->u.status1.ox_id = cpu_to_le16(temp);
2238 ctio->u.status1.scsi_status =
2239 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2240 ctio->u.status1.response_len = cpu_to_le16(8);
2241 ctio->u.status1.sense_data[0] = resp_code;
2242
2243 /* Memory Barrier */
2244 wmb();
2245 if (qpair->reqq_start_iocbs)
2246 qpair->reqq_start_iocbs(qpair);
2247 else
2248 qla2x00_start_iocbs(ha, qpair->req);
2249 }
2250
2251 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2252 {
2253 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2254 }
2255 EXPORT_SYMBOL(qlt_free_mcmd);
2256
2257 /*
2258 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2259 * reacquire
2260 */
2261 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
2262 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2263 {
2264 struct atio_from_isp *atio = &cmd->atio;
2265 struct ctio7_to_24xx *ctio;
2266 uint16_t temp;
2267 struct scsi_qla_host *vha = cmd->vha;
2268
2269 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2270 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2271 "sense_key=%02x, asc=%02x, ascq=%02x",
2272 vha, atio, scsi_status, sense_key, asc, ascq);
2273
2274 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2275 if (!ctio) {
2276 ql_dbg(ql_dbg_async, vha, 0x3067,
2277 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2278 vha->host_no, __func__);
2279 goto out;
2280 }
2281
2282 ctio->entry_type = CTIO_TYPE7;
2283 ctio->entry_count = 1;
2284 ctio->handle = QLA_TGT_SKIP_HANDLE;
2285 ctio->nport_handle = cmd->sess->loop_id;
2286 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2287 ctio->vp_index = vha->vp_idx;
2288 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2289 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2290 temp = (atio->u.isp24.attr << 9) |
2291 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2292 ctio->u.status1.flags = cpu_to_le16(temp);
2293 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2294 ctio->u.status1.ox_id = cpu_to_le16(temp);
2295 ctio->u.status1.scsi_status =
2296 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2297 ctio->u.status1.response_len = cpu_to_le16(18);
2298 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2299
2300 if (ctio->u.status1.residual != 0)
2301 ctio->u.status1.scsi_status |=
2302 cpu_to_le16(SS_RESIDUAL_UNDER);
2303
2304 /* Fixed format sense data. */
2305 ctio->u.status1.sense_data[0] = 0x70;
2306 ctio->u.status1.sense_data[2] = sense_key;
2307 /* Additional sense length */
2308 ctio->u.status1.sense_data[7] = 0xa;
2309 /* ASC and ASCQ */
2310 ctio->u.status1.sense_data[12] = asc;
2311 ctio->u.status1.sense_data[13] = ascq;
2312
2313 /* Memory Barrier */
2314 wmb();
2315
2316 if (qpair->reqq_start_iocbs)
2317 qpair->reqq_start_iocbs(qpair);
2318 else
2319 qla2x00_start_iocbs(vha, qpair->req);
2320
2321 out:
2322 return;
2323 }
2324
2325 /* callback from target fabric module code */
2326 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2327 {
2328 struct scsi_qla_host *vha = mcmd->sess->vha;
2329 struct qla_hw_data *ha = vha->hw;
2330 unsigned long flags;
2331 struct qla_qpair *qpair = mcmd->qpair;
2332 bool free_mcmd = true;
2333
2334 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2335 "TM response mcmd (%p) status %#x state %#x",
2336 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2337
2338 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2339
2340 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
2341 /*
2342 * Either the port is not online or this request was from
2343 * previous life, just abort the processing.
2344 */
2345 ql_dbg(ql_dbg_async, vha, 0xe100,
2346 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2347 vha->flags.online, qla2x00_reset_active(vha),
2348 mcmd->reset_count, qpair->chip_reset);
2349 ha->tgt.tgt_ops->free_mcmd(mcmd);
2350 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2351 return;
2352 }
2353
2354 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2355 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) {
2356 case ELS_LOGO:
2357 case ELS_PRLO:
2358 case ELS_TPRLO:
2359 ql_dbg(ql_dbg_disc, vha, 0x2106,
2360 "TM response logo %8phC status %#x state %#x",
2361 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2362 mcmd->flags);
2363 qlt_schedule_sess_for_deletion(mcmd->sess);
2364 break;
2365 default:
2366 qlt_send_notify_ack(vha->hw->base_qpair,
2367 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2368 break;
2369 }
2370 } else {
2371 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) {
2372 qlt_build_abts_resp_iocb(mcmd);
2373 free_mcmd = false;
2374 } else
2375 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2376 mcmd->fc_tm_rsp);
2377 }
2378 /*
2379 * Make the callback for ->free_mcmd() to queue_work() and invoke
2380 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2381 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2382 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2383 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2384 * qlt_xmit_tm_rsp() returns here..
2385 */
2386 if (free_mcmd)
2387 ha->tgt.tgt_ops->free_mcmd(mcmd);
2388
2389 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2390 }
2391 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2392
2393 /* No locks */
2394 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2395 {
2396 struct qla_tgt_cmd *cmd = prm->cmd;
2397
2398 BUG_ON(cmd->sg_cnt == 0);
2399
2400 prm->sg = (struct scatterlist *)cmd->sg;
2401 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg,
2402 cmd->sg_cnt, cmd->dma_data_direction);
2403 if (unlikely(prm->seg_cnt == 0))
2404 goto out_err;
2405
2406 prm->cmd->sg_mapped = 1;
2407
2408 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2409 /*
2410 * If greater than four sg entries then we need to allocate
2411 * the continuation entries
2412 */
2413 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
2414 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2415 QLA_TGT_DATASEGS_PER_CMD_24XX,
2416 QLA_TGT_DATASEGS_PER_CONT_24XX);
2417 } else {
2418 /* DIF */
2419 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2420 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2421 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2422 prm->tot_dsds = prm->seg_cnt;
2423 } else
2424 prm->tot_dsds = prm->seg_cnt;
2425
2426 if (cmd->prot_sg_cnt) {
2427 prm->prot_sg = cmd->prot_sg;
2428 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev,
2429 cmd->prot_sg, cmd->prot_sg_cnt,
2430 cmd->dma_data_direction);
2431 if (unlikely(prm->prot_seg_cnt == 0))
2432 goto out_err;
2433
2434 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2435 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2436 /* Dif Bundling not support here */
2437 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2438 cmd->blk_sz);
2439 prm->tot_dsds += prm->prot_seg_cnt;
2440 } else
2441 prm->tot_dsds += prm->prot_seg_cnt;
2442 }
2443 }
2444
2445 return 0;
2446
2447 out_err:
2448 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2449 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2450 0, prm->cmd->sg_cnt);
2451 return -1;
2452 }
2453
2454 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2455 {
2456 struct qla_hw_data *ha;
2457 struct qla_qpair *qpair;
2458
2459 if (!cmd->sg_mapped)
2460 return;
2461
2462 qpair = cmd->qpair;
2463
2464 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt,
2465 cmd->dma_data_direction);
2466 cmd->sg_mapped = 0;
2467
2468 if (cmd->prot_sg_cnt)
2469 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt,
2470 cmd->dma_data_direction);
2471
2472 if (!cmd->ctx)
2473 return;
2474 ha = vha->hw;
2475 if (cmd->ctx_dsd_alloced)
2476 qla2x00_clean_dsd_pool(ha, cmd->ctx);
2477
2478 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2479 }
2480
2481 static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2482 uint32_t req_cnt)
2483 {
2484 uint32_t cnt;
2485 struct req_que *req = qpair->req;
2486
2487 if (req->cnt < (req_cnt + 2)) {
2488 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2489 RD_REG_DWORD_RELAXED(req->req_q_out));
2490
2491 if (req->ring_index < cnt)
2492 req->cnt = cnt - req->ring_index;
2493 else
2494 req->cnt = req->length - (req->ring_index - cnt);
2495
2496 if (unlikely(req->cnt < (req_cnt + 2)))
2497 return -EAGAIN;
2498 }
2499
2500 req->cnt -= req_cnt;
2501
2502 return 0;
2503 }
2504
2505 /*
2506 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2507 */
2508 static inline void *qlt_get_req_pkt(struct req_que *req)
2509 {
2510 /* Adjust ring index. */
2511 req->ring_index++;
2512 if (req->ring_index == req->length) {
2513 req->ring_index = 0;
2514 req->ring_ptr = req->ring;
2515 } else {
2516 req->ring_ptr++;
2517 }
2518 return (cont_entry_t *)req->ring_ptr;
2519 }
2520
2521 /* ha->hardware_lock supposed to be held on entry */
2522 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2523 {
2524 uint32_t h;
2525 int index;
2526 uint8_t found = 0;
2527 struct req_que *req = qpair->req;
2528
2529 h = req->current_outstanding_cmd;
2530
2531 for (index = 1; index < req->num_outstanding_cmds; index++) {
2532 h++;
2533 if (h == req->num_outstanding_cmds)
2534 h = 1;
2535
2536 if (h == QLA_TGT_SKIP_HANDLE)
2537 continue;
2538
2539 if (!req->outstanding_cmds[h]) {
2540 found = 1;
2541 break;
2542 }
2543 }
2544
2545 if (found) {
2546 req->current_outstanding_cmd = h;
2547 } else {
2548 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2549 "qla_target(%d): Ran out of empty cmd slots\n",
2550 qpair->vha->vp_idx);
2551 h = QLA_TGT_NULL_HANDLE;
2552 }
2553
2554 return h;
2555 }
2556
2557 /* ha->hardware_lock supposed to be held on entry */
2558 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2559 struct qla_tgt_prm *prm)
2560 {
2561 uint32_t h;
2562 struct ctio7_to_24xx *pkt;
2563 struct atio_from_isp *atio = &prm->cmd->atio;
2564 uint16_t temp;
2565
2566 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2567 prm->pkt = pkt;
2568 memset(pkt, 0, sizeof(*pkt));
2569
2570 pkt->entry_type = CTIO_TYPE7;
2571 pkt->entry_count = (uint8_t)prm->req_cnt;
2572 pkt->vp_index = prm->cmd->vp_idx;
2573
2574 h = qlt_make_handle(qpair);
2575 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2576 /*
2577 * CTIO type 7 from the firmware doesn't provide a way to
2578 * know the initiator's LOOP ID, hence we can't find
2579 * the session and, so, the command.
2580 */
2581 return -EAGAIN;
2582 } else
2583 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2584
2585 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2586 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2587 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2588 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2589 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2590 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2591 temp = atio->u.isp24.attr << 9;
2592 pkt->u.status0.flags |= cpu_to_le16(temp);
2593 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2594 pkt->u.status0.ox_id = cpu_to_le16(temp);
2595 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2596
2597 return 0;
2598 }
2599
2600 /*
2601 * ha->hardware_lock supposed to be held on entry. We have already made sure
2602 * that there is sufficient amount of request entries to not drop it.
2603 */
2604 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2605 {
2606 int cnt;
2607 struct dsd64 *cur_dsd;
2608
2609 /* Build continuation packets */
2610 while (prm->seg_cnt > 0) {
2611 cont_a64_entry_t *cont_pkt64 =
2612 (cont_a64_entry_t *)qlt_get_req_pkt(
2613 prm->cmd->qpair->req);
2614
2615 /*
2616 * Make sure that from cont_pkt64 none of
2617 * 64-bit specific fields used for 32-bit
2618 * addressing. Cast to (cont_entry_t *) for
2619 * that.
2620 */
2621
2622 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2623
2624 cont_pkt64->entry_count = 1;
2625 cont_pkt64->sys_define = 0;
2626
2627 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2628 cur_dsd = cont_pkt64->dsd;
2629
2630 /* Load continuation entry data segments */
2631 for (cnt = 0;
2632 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2633 cnt++, prm->seg_cnt--) {
2634 append_dsd64(&cur_dsd, prm->sg);
2635 prm->sg = sg_next(prm->sg);
2636 }
2637 }
2638 }
2639
2640 /*
2641 * ha->hardware_lock supposed to be held on entry. We have already made sure
2642 * that there is sufficient amount of request entries to not drop it.
2643 */
2644 static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2645 {
2646 int cnt;
2647 struct dsd64 *cur_dsd;
2648 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2649
2650 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2651
2652 /* Setup packet address segment pointer */
2653 cur_dsd = &pkt24->u.status0.dsd;
2654
2655 /* Set total data segment count */
2656 if (prm->seg_cnt)
2657 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2658
2659 if (prm->seg_cnt == 0) {
2660 /* No data transfer */
2661 cur_dsd->address = 0;
2662 cur_dsd->length = 0;
2663 return;
2664 }
2665
2666 /* If scatter gather */
2667
2668 /* Load command entry data segments */
2669 for (cnt = 0;
2670 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2671 cnt++, prm->seg_cnt--) {
2672 append_dsd64(&cur_dsd, prm->sg);
2673 prm->sg = sg_next(prm->sg);
2674 }
2675
2676 qlt_load_cont_data_segments(prm);
2677 }
2678
2679 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2680 {
2681 return cmd->bufflen > 0;
2682 }
2683
2684 static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2685 {
2686 struct qla_tgt_cmd *cmd;
2687 struct scsi_qla_host *vha;
2688
2689 /* asc 0x10=dif error */
2690 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2691 cmd = prm->cmd;
2692 vha = cmd->vha;
2693 /* ASCQ */
2694 switch (prm->sense_buffer[13]) {
2695 case 1:
2696 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
2697 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2698 "se_cmd=%p tag[%x]",
2699 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2700 cmd->atio.u.isp24.exchange_addr);
2701 break;
2702 case 2:
2703 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
2704 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2705 "se_cmd=%p tag[%x]",
2706 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2707 cmd->atio.u.isp24.exchange_addr);
2708 break;
2709 case 3:
2710 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
2711 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2712 "se_cmd=%p tag[%x]",
2713 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2714 cmd->atio.u.isp24.exchange_addr);
2715 break;
2716 default:
2717 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
2718 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2719 "se_cmd=%p tag[%x]",
2720 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2721 cmd->atio.u.isp24.exchange_addr);
2722 break;
2723 }
2724 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
2725 }
2726 }
2727
2728 /*
2729 * Called without ha->hardware_lock held
2730 */
2731 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2732 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2733 uint32_t *full_req_cnt)
2734 {
2735 struct se_cmd *se_cmd = &cmd->se_cmd;
2736 struct qla_qpair *qpair = cmd->qpair;
2737
2738 prm->cmd = cmd;
2739 prm->tgt = cmd->tgt;
2740 prm->pkt = NULL;
2741 prm->rq_result = scsi_status;
2742 prm->sense_buffer = &cmd->sense_buffer[0];
2743 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2744 prm->sg = NULL;
2745 prm->seg_cnt = -1;
2746 prm->req_cnt = 1;
2747 prm->residual = 0;
2748 prm->add_status_pkt = 0;
2749 prm->prot_sg = NULL;
2750 prm->prot_seg_cnt = 0;
2751 prm->tot_dsds = 0;
2752
2753 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2754 if (qlt_pci_map_calc_cnt(prm) != 0)
2755 return -EAGAIN;
2756 }
2757
2758 *full_req_cnt = prm->req_cnt;
2759
2760 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2761 prm->residual = se_cmd->residual_count;
2762 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
2763 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2764 prm->residual, se_cmd->tag,
2765 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2766 cmd->bufflen, prm->rq_result);
2767 prm->rq_result |= SS_RESIDUAL_UNDER;
2768 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2769 prm->residual = se_cmd->residual_count;
2770 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
2771 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2772 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2773 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2774 prm->rq_result |= SS_RESIDUAL_OVER;
2775 }
2776
2777 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2778 /*
2779 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2780 * ignored in *xmit_response() below
2781 */
2782 if (qlt_has_data(cmd)) {
2783 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2784 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2785 (prm->rq_result != 0))) {
2786 prm->add_status_pkt = 1;
2787 (*full_req_cnt)++;
2788 }
2789 }
2790 }
2791
2792 return 0;
2793 }
2794
2795 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2796 int sending_sense)
2797 {
2798 if (cmd->qpair->enable_class_2)
2799 return 0;
2800
2801 if (sending_sense)
2802 return cmd->conf_compl_supported;
2803 else
2804 return cmd->qpair->enable_explicit_conf &&
2805 cmd->conf_compl_supported;
2806 }
2807
2808 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2809 struct qla_tgt_prm *prm)
2810 {
2811 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2812 (uint32_t)sizeof(ctio->u.status1.sense_data));
2813 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2814 if (qlt_need_explicit_conf(prm->cmd, 0)) {
2815 ctio->u.status0.flags |= cpu_to_le16(
2816 CTIO7_FLAGS_EXPLICIT_CONFORM |
2817 CTIO7_FLAGS_CONFORM_REQ);
2818 }
2819 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2820 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2821 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2822 int i;
2823
2824 if (qlt_need_explicit_conf(prm->cmd, 1)) {
2825 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2826 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2827 "Skipping EXPLICIT_CONFORM and "
2828 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2829 "non GOOD status\n");
2830 goto skip_explict_conf;
2831 }
2832 ctio->u.status1.flags |= cpu_to_le16(
2833 CTIO7_FLAGS_EXPLICIT_CONFORM |
2834 CTIO7_FLAGS_CONFORM_REQ);
2835 }
2836 skip_explict_conf:
2837 ctio->u.status1.flags &=
2838 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2839 ctio->u.status1.flags |=
2840 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2841 ctio->u.status1.scsi_status |=
2842 cpu_to_le16(SS_SENSE_LEN_VALID);
2843 ctio->u.status1.sense_length =
2844 cpu_to_le16(prm->sense_buffer_len);
2845 for (i = 0; i < prm->sense_buffer_len/4; i++)
2846 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2847 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2848
2849 qlt_print_dif_err(prm);
2850
2851 } else {
2852 ctio->u.status1.flags &=
2853 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2854 ctio->u.status1.flags |=
2855 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2856 ctio->u.status1.sense_length = 0;
2857 memset(ctio->u.status1.sense_data, 0,
2858 sizeof(ctio->u.status1.sense_data));
2859 }
2860
2861 /* Sense with len > 24, is it possible ??? */
2862 }
2863
2864 static inline int
2865 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2866 {
2867 switch (se_cmd->prot_op) {
2868 case TARGET_PROT_DOUT_INSERT:
2869 case TARGET_PROT_DIN_STRIP:
2870 if (ql2xenablehba_err_chk >= 1)
2871 return 1;
2872 break;
2873 case TARGET_PROT_DOUT_PASS:
2874 case TARGET_PROT_DIN_PASS:
2875 if (ql2xenablehba_err_chk >= 2)
2876 return 1;
2877 break;
2878 case TARGET_PROT_DIN_INSERT:
2879 case TARGET_PROT_DOUT_STRIP:
2880 return 1;
2881 default:
2882 break;
2883 }
2884 return 0;
2885 }
2886
2887 static inline int
2888 qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2889 {
2890 switch (se_cmd->prot_op) {
2891 case TARGET_PROT_DIN_INSERT:
2892 case TARGET_PROT_DOUT_INSERT:
2893 case TARGET_PROT_DIN_STRIP:
2894 case TARGET_PROT_DOUT_STRIP:
2895 case TARGET_PROT_DIN_PASS:
2896 case TARGET_PROT_DOUT_PASS:
2897 return 1;
2898 default:
2899 return 0;
2900 }
2901 return 0;
2902 }
2903
2904 /*
2905 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
2906 */
2907 static void
2908 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2909 uint16_t *pfw_prot_opts)
2910 {
2911 struct se_cmd *se_cmd = &cmd->se_cmd;
2912 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2913 scsi_qla_host_t *vha = cmd->tgt->vha;
2914 struct qla_hw_data *ha = vha->hw;
2915 uint32_t t32 = 0;
2916
2917 /*
2918 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
2919 * have been immplemented by TCM, before AppTag is avail.
2920 * Look for modesense_handlers[]
2921 */
2922 ctx->app_tag = 0;
2923 ctx->app_tag_mask[0] = 0x0;
2924 ctx->app_tag_mask[1] = 0x0;
2925
2926 if (IS_PI_UNINIT_CAPABLE(ha)) {
2927 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2928 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2929 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2930 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2931 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2932 }
2933
2934 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2935
2936 switch (se_cmd->prot_type) {
2937 case TARGET_DIF_TYPE0_PROT:
2938 /*
2939 * No check for ql2xenablehba_err_chk, as it
2940 * would be an I/O error if hba tag generation
2941 * is not done.
2942 */
2943 ctx->ref_tag = cpu_to_le32(lba);
2944 /* enable ALL bytes of the ref tag */
2945 ctx->ref_tag_mask[0] = 0xff;
2946 ctx->ref_tag_mask[1] = 0xff;
2947 ctx->ref_tag_mask[2] = 0xff;
2948 ctx->ref_tag_mask[3] = 0xff;
2949 break;
2950 case TARGET_DIF_TYPE1_PROT:
2951 /*
2952 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2953 * REF tag, and 16 bit app tag.
2954 */
2955 ctx->ref_tag = cpu_to_le32(lba);
2956 if (!qla_tgt_ref_mask_check(se_cmd) ||
2957 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2958 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2959 break;
2960 }
2961 /* enable ALL bytes of the ref tag */
2962 ctx->ref_tag_mask[0] = 0xff;
2963 ctx->ref_tag_mask[1] = 0xff;
2964 ctx->ref_tag_mask[2] = 0xff;
2965 ctx->ref_tag_mask[3] = 0xff;
2966 break;
2967 case TARGET_DIF_TYPE2_PROT:
2968 /*
2969 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2970 * tag has to match LBA in CDB + N
2971 */
2972 ctx->ref_tag = cpu_to_le32(lba);
2973 if (!qla_tgt_ref_mask_check(se_cmd) ||
2974 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2975 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2976 break;
2977 }
2978 /* enable ALL bytes of the ref tag */
2979 ctx->ref_tag_mask[0] = 0xff;
2980 ctx->ref_tag_mask[1] = 0xff;
2981 ctx->ref_tag_mask[2] = 0xff;
2982 ctx->ref_tag_mask[3] = 0xff;
2983 break;
2984 case TARGET_DIF_TYPE3_PROT:
2985 /* For TYPE 3 protection: 16 bit GUARD only */
2986 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2987 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2988 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2989 break;
2990 }
2991 }
2992
2993 static inline int
2994 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
2995 {
2996 struct dsd64 *cur_dsd;
2997 uint32_t transfer_length = 0;
2998 uint32_t data_bytes;
2999 uint32_t dif_bytes;
3000 uint8_t bundling = 1;
3001 struct crc_context *crc_ctx_pkt = NULL;
3002 struct qla_hw_data *ha;
3003 struct ctio_crc2_to_fw *pkt;
3004 dma_addr_t crc_ctx_dma;
3005 uint16_t fw_prot_opts = 0;
3006 struct qla_tgt_cmd *cmd = prm->cmd;
3007 struct se_cmd *se_cmd = &cmd->se_cmd;
3008 uint32_t h;
3009 struct atio_from_isp *atio = &prm->cmd->atio;
3010 struct qla_tc_param tc;
3011 uint16_t t16;
3012 scsi_qla_host_t *vha = cmd->vha;
3013
3014 ha = vha->hw;
3015
3016 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
3017 prm->pkt = pkt;
3018 memset(pkt, 0, sizeof(*pkt));
3019
3020 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
3021 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
3022 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
3023 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
3024
3025 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
3026 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
3027 bundling = 0;
3028
3029 /* Compute dif len and adjust data len to incude protection */
3030 data_bytes = cmd->bufflen;
3031 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
3032
3033 switch (se_cmd->prot_op) {
3034 case TARGET_PROT_DIN_INSERT:
3035 case TARGET_PROT_DOUT_STRIP:
3036 transfer_length = data_bytes;
3037 if (cmd->prot_sg_cnt)
3038 data_bytes += dif_bytes;
3039 break;
3040 case TARGET_PROT_DIN_STRIP:
3041 case TARGET_PROT_DOUT_INSERT:
3042 case TARGET_PROT_DIN_PASS:
3043 case TARGET_PROT_DOUT_PASS:
3044 transfer_length = data_bytes + dif_bytes;
3045 break;
3046 default:
3047 BUG();
3048 break;
3049 }
3050
3051 if (!qlt_hba_err_chk_enabled(se_cmd))
3052 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
3053 /* HBA error checking enabled */
3054 else if (IS_PI_UNINIT_CAPABLE(ha)) {
3055 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
3056 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
3057 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
3058 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
3059 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
3060 }
3061
3062 switch (se_cmd->prot_op) {
3063 case TARGET_PROT_DIN_INSERT:
3064 case TARGET_PROT_DOUT_INSERT:
3065 fw_prot_opts |= PO_MODE_DIF_INSERT;
3066 break;
3067 case TARGET_PROT_DIN_STRIP:
3068 case TARGET_PROT_DOUT_STRIP:
3069 fw_prot_opts |= PO_MODE_DIF_REMOVE;
3070 break;
3071 case TARGET_PROT_DIN_PASS:
3072 case TARGET_PROT_DOUT_PASS:
3073 fw_prot_opts |= PO_MODE_DIF_PASS;
3074 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
3075 break;
3076 default:/* Normal Request */
3077 fw_prot_opts |= PO_MODE_DIF_PASS;
3078 break;
3079 }
3080
3081 /* ---- PKT ---- */
3082 /* Update entry type to indicate Command Type CRC_2 IOCB */
3083 pkt->entry_type = CTIO_CRC2;
3084 pkt->entry_count = 1;
3085 pkt->vp_index = cmd->vp_idx;
3086
3087 h = qlt_make_handle(qpair);
3088 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
3089 /*
3090 * CTIO type 7 from the firmware doesn't provide a way to
3091 * know the initiator's LOOP ID, hence we can't find
3092 * the session and, so, the command.
3093 */
3094 return -EAGAIN;
3095 } else
3096 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
3097
3098 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
3099 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
3100 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
3101 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3102 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
3103 pkt->exchange_addr = atio->u.isp24.exchange_addr;
3104
3105 /* silence compile warning */
3106 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3107 pkt->ox_id = cpu_to_le16(t16);
3108
3109 t16 = (atio->u.isp24.attr << 9);
3110 pkt->flags |= cpu_to_le16(t16);
3111 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
3112
3113 /* Set transfer direction */
3114 if (cmd->dma_data_direction == DMA_TO_DEVICE)
3115 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
3116 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
3117 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
3118
3119 pkt->dseg_count = prm->tot_dsds;
3120 /* Fibre channel byte count */
3121 pkt->transfer_length = cpu_to_le32(transfer_length);
3122
3123 /* ----- CRC context -------- */
3124
3125 /* Allocate CRC context from global pool */
3126 crc_ctx_pkt = cmd->ctx =
3127 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
3128
3129 if (!crc_ctx_pkt)
3130 goto crc_queuing_error;
3131
3132 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3133 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3134
3135 /* Set handle */
3136 crc_ctx_pkt->handle = pkt->handle;
3137
3138 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
3139
3140 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address);
3141 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
3142
3143 if (!bundling) {
3144 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0];
3145 } else {
3146 /*
3147 * Configure Bundling if we need to fetch interlaving
3148 * protection PCI accesses
3149 */
3150 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3151 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3152 crc_ctx_pkt->u.bundling.dseg_count =
3153 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3154 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0];
3155 }
3156
3157 /* Finish the common fields of CRC pkt */
3158 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3159 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3160 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
3161 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
3162
3163 memset((uint8_t *)&tc, 0 , sizeof(tc));
3164 tc.vha = vha;
3165 tc.blk_sz = cmd->blk_sz;
3166 tc.bufflen = cmd->bufflen;
3167 tc.sg = cmd->sg;
3168 tc.prot_sg = cmd->prot_sg;
3169 tc.ctx = crc_ctx_pkt;
3170 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
3171
3172 /* Walks data segments */
3173 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
3174
3175 if (!bundling && prm->prot_seg_cnt) {
3176 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
3177 prm->tot_dsds, &tc))
3178 goto crc_queuing_error;
3179 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
3180 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
3181 goto crc_queuing_error;
3182
3183 if (bundling && prm->prot_seg_cnt) {
3184 /* Walks dif segments */
3185 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
3186
3187 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd;
3188 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
3189 prm->prot_seg_cnt, cmd))
3190 goto crc_queuing_error;
3191 }
3192 return QLA_SUCCESS;
3193
3194 crc_queuing_error:
3195 /* Cleanup will be performed by the caller */
3196 qpair->req->outstanding_cmds[h] = NULL;
3197
3198 return QLA_FUNCTION_FAILED;
3199 }
3200
3201 /*
3202 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3203 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3204 */
3205 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3206 uint8_t scsi_status)
3207 {
3208 struct scsi_qla_host *vha = cmd->vha;
3209 struct qla_qpair *qpair = cmd->qpair;
3210 struct ctio7_to_24xx *pkt;
3211 struct qla_tgt_prm prm;
3212 uint32_t full_req_cnt = 0;
3213 unsigned long flags = 0;
3214 int res;
3215
3216 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3217 (cmd->sess && cmd->sess->deleted)) {
3218 cmd->state = QLA_TGT_STATE_PROCESSED;
3219 res = 0;
3220 goto free;
3221 }
3222
3223 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
3224 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
3225 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3226 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3227 &cmd->se_cmd, qpair->id);
3228
3229 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3230 &full_req_cnt);
3231 if (unlikely(res != 0))
3232 goto free;
3233
3234 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3235
3236 if (xmit_type == QLA_TGT_XMIT_STATUS)
3237 qpair->tgt_counters.core_qla_snd_status++;
3238 else
3239 qpair->tgt_counters.core_qla_que_buf++;
3240
3241 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
3242 /*
3243 * Either the port is not online or this request was from
3244 * previous life, just abort the processing.
3245 */
3246 cmd->state = QLA_TGT_STATE_PROCESSED;
3247 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3248 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3249 vha->flags.online, qla2x00_reset_active(vha),
3250 cmd->reset_count, qpair->chip_reset);
3251 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3252 res = 0;
3253 goto free;
3254 }
3255
3256 /* Does F/W have an IOCBs for this request */
3257 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
3258 if (unlikely(res))
3259 goto out_unmap_unlock;
3260
3261 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3262 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3263 else
3264 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3265 if (unlikely(res != 0)) {
3266 qpair->req->cnt += full_req_cnt;
3267 goto out_unmap_unlock;
3268 }
3269
3270 pkt = (struct ctio7_to_24xx *)prm.pkt;
3271
3272 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3273 pkt->u.status0.flags |=
3274 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
3275 CTIO7_FLAGS_STATUS_MODE_0);
3276
3277 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3278 qlt_load_data_segments(&prm);
3279
3280 if (prm.add_status_pkt == 0) {
3281 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3282 pkt->u.status0.scsi_status =
3283 cpu_to_le16(prm.rq_result);
3284 pkt->u.status0.residual =
3285 cpu_to_le32(prm.residual);
3286 pkt->u.status0.flags |= cpu_to_le16(
3287 CTIO7_FLAGS_SEND_STATUS);
3288 if (qlt_need_explicit_conf(cmd, 0)) {
3289 pkt->u.status0.flags |=
3290 cpu_to_le16(
3291 CTIO7_FLAGS_EXPLICIT_CONFORM |
3292 CTIO7_FLAGS_CONFORM_REQ);
3293 }
3294 }
3295
3296 } else {
3297 /*
3298 * We have already made sure that there is sufficient
3299 * amount of request entries to not drop HW lock in
3300 * req_pkt().
3301 */
3302 struct ctio7_to_24xx *ctio =
3303 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3304 qpair->req);
3305
3306 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
3307 "Building additional status packet 0x%p.\n",
3308 ctio);
3309
3310 /*
3311 * T10Dif: ctio_crc2_to_fw overlay ontop of
3312 * ctio7_to_24xx
3313 */
3314 memcpy(ctio, pkt, sizeof(*ctio));
3315 /* reset back to CTIO7 */
3316 ctio->entry_count = 1;
3317 ctio->entry_type = CTIO_TYPE7;
3318 ctio->dseg_count = 0;
3319 ctio->u.status1.flags &= ~cpu_to_le16(
3320 CTIO7_FLAGS_DATA_IN);
3321
3322 /* Real finish is ctio_m1's finish */
3323 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
3324 pkt->u.status0.flags |= cpu_to_le16(
3325 CTIO7_FLAGS_DONT_RET_CTIO);
3326
3327 /* qlt_24xx_init_ctio_to_isp will correct
3328 * all neccessary fields that's part of CTIO7.
3329 * There should be no residual of CTIO-CRC2 data.
3330 */
3331 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3332 &prm);
3333 }
3334 } else
3335 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3336
3337
3338 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
3339 cmd->cmd_sent_to_fw = 1;
3340 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3341
3342 /* Memory Barrier */
3343 wmb();
3344 if (qpair->reqq_start_iocbs)
3345 qpair->reqq_start_iocbs(qpair);
3346 else
3347 qla2x00_start_iocbs(vha, qpair->req);
3348 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3349
3350 return 0;
3351
3352 out_unmap_unlock:
3353 qlt_unmap_sg(vha, cmd);
3354 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3355
3356 free:
3357 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3358 return res;
3359 }
3360 EXPORT_SYMBOL(qlt_xmit_response);
3361
3362 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3363 {
3364 struct ctio7_to_24xx *pkt;
3365 struct scsi_qla_host *vha = cmd->vha;
3366 struct qla_tgt *tgt = cmd->tgt;
3367 struct qla_tgt_prm prm;
3368 unsigned long flags = 0;
3369 int res = 0;
3370 struct qla_qpair *qpair = cmd->qpair;
3371
3372 memset(&prm, 0, sizeof(prm));
3373 prm.cmd = cmd;
3374 prm.tgt = tgt;
3375 prm.sg = NULL;
3376 prm.req_cnt = 1;
3377
3378 /* Calculate number of entries and segments required */
3379 if (qlt_pci_map_calc_cnt(&prm) != 0)
3380 return -EAGAIN;
3381
3382 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3383 (cmd->sess && cmd->sess->deleted)) {
3384 /*
3385 * Either the port is not online or this request was from
3386 * previous life, just abort the processing.
3387 */
3388 cmd->aborted = 1;
3389 cmd->write_data_transferred = 0;
3390 cmd->state = QLA_TGT_STATE_DATA_IN;
3391 vha->hw->tgt.tgt_ops->handle_data(cmd);
3392 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3393 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3394 vha->flags.online, qla2x00_reset_active(vha),
3395 cmd->reset_count, qpair->chip_reset);
3396 return 0;
3397 }
3398
3399 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3400 /* Does F/W have an IOCBs for this request */
3401 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
3402 if (res != 0)
3403 goto out_unlock_free_unmap;
3404 if (cmd->se_cmd.prot_op)
3405 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3406 else
3407 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3408
3409 if (unlikely(res != 0)) {
3410 qpair->req->cnt += prm.req_cnt;
3411 goto out_unlock_free_unmap;
3412 }
3413
3414 pkt = (struct ctio7_to_24xx *)prm.pkt;
3415 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
3416 CTIO7_FLAGS_STATUS_MODE_0);
3417
3418 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3419 qlt_load_data_segments(&prm);
3420
3421 cmd->state = QLA_TGT_STATE_NEED_DATA;
3422 cmd->cmd_sent_to_fw = 1;
3423 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3424
3425 /* Memory Barrier */
3426 wmb();
3427 if (qpair->reqq_start_iocbs)
3428 qpair->reqq_start_iocbs(qpair);
3429 else
3430 qla2x00_start_iocbs(vha, qpair->req);
3431 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3432
3433 return res;
3434
3435 out_unlock_free_unmap:
3436 qlt_unmap_sg(vha, cmd);
3437 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3438
3439 return res;
3440 }
3441 EXPORT_SYMBOL(qlt_rdy_to_xfer);
3442
3443
3444 /*
3445 * it is assumed either hardware_lock or qpair lock is held.
3446 */
3447 static void
3448 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
3449 struct ctio_crc_from_fw *sts)
3450 {
3451 uint8_t *ap = &sts->actual_dif[0];
3452 uint8_t *ep = &sts->expected_dif[0];
3453 uint64_t lba = cmd->se_cmd.t_task_lba;
3454 uint8_t scsi_status, sense_key, asc, ascq;
3455 unsigned long flags;
3456 struct scsi_qla_host *vha = cmd->vha;
3457
3458 cmd->trc_flags |= TRC_DIF_ERR;
3459
3460 cmd->a_guard = get_unaligned_be16(ap + 0);
3461 cmd->a_app_tag = get_unaligned_be16(ap + 2);
3462 cmd->a_ref_tag = get_unaligned_be32(ap + 4);
3463
3464 cmd->e_guard = get_unaligned_be16(ep + 0);
3465 cmd->e_app_tag = get_unaligned_be16(ep + 2);
3466 cmd->e_ref_tag = get_unaligned_be32(ep + 4);
3467
3468 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3469 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
3470
3471 scsi_status = sense_key = asc = ascq = 0;
3472
3473 /* check appl tag */
3474 if (cmd->e_app_tag != cmd->a_app_tag) {
3475 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3476 "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]",
3477 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3478 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3479 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3480 cmd->atio.u.isp24.fcp_hdr.ox_id);
3481
3482 cmd->dif_err_code = DIF_ERR_APP;
3483 scsi_status = SAM_STAT_CHECK_CONDITION;
3484 sense_key = ABORTED_COMMAND;
3485 asc = 0x10;
3486 ascq = 0x2;
3487 }
3488
3489 /* check ref tag */
3490 if (cmd->e_ref_tag != cmd->a_ref_tag) {
3491 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3492 "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] ",
3493 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3494 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3495 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3496 cmd->atio.u.isp24.fcp_hdr.ox_id);
3497
3498 cmd->dif_err_code = DIF_ERR_REF;
3499 scsi_status = SAM_STAT_CHECK_CONDITION;
3500 sense_key = ABORTED_COMMAND;
3501 asc = 0x10;
3502 ascq = 0x3;
3503 goto out;
3504 }
3505
3506 /* check guard */
3507 if (cmd->e_guard != cmd->a_guard) {
3508 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3509 "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]",
3510 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3511 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3512 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3513 cmd->atio.u.isp24.fcp_hdr.ox_id);
3514
3515 cmd->dif_err_code = DIF_ERR_GRD;
3516 scsi_status = SAM_STAT_CHECK_CONDITION;
3517 sense_key = ABORTED_COMMAND;
3518 asc = 0x10;
3519 ascq = 0x1;
3520 }
3521 out:
3522 switch (cmd->state) {
3523 case QLA_TGT_STATE_NEED_DATA:
3524 /* handle_data will load DIF error code */
3525 cmd->state = QLA_TGT_STATE_DATA_IN;
3526 vha->hw->tgt.tgt_ops->handle_data(cmd);
3527 break;
3528 default:
3529 spin_lock_irqsave(&cmd->cmd_lock, flags);
3530 if (cmd->aborted) {
3531 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3532 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3533 break;
3534 }
3535 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3536
3537 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3538 ascq);
3539 /* assume scsi status gets out on the wire.
3540 * Will not wait for completion.
3541 */
3542 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3543 break;
3544 }
3545 }
3546
3547 /* If hardware_lock held on entry, might drop it, then reaquire */
3548 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3549 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3550 struct imm_ntfy_from_isp *ntfy)
3551 {
3552 struct nack_to_isp *nack;
3553 struct qla_hw_data *ha = vha->hw;
3554 request_t *pkt;
3555 int ret = 0;
3556
3557 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3558 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3559
3560 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3561 if (pkt == NULL) {
3562 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3563 "qla_target(%d): %s failed: unable to allocate "
3564 "request packet\n", vha->vp_idx, __func__);
3565 return -ENOMEM;
3566 }
3567
3568 pkt->entry_type = NOTIFY_ACK_TYPE;
3569 pkt->entry_count = 1;
3570 pkt->handle = QLA_TGT_SKIP_HANDLE;
3571
3572 nack = (struct nack_to_isp *)pkt;
3573 nack->ox_id = ntfy->ox_id;
3574
3575 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3576 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3577 nack->u.isp24.flags = ntfy->u.isp24.flags &
3578 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3579 }
3580
3581 /* terminate */
3582 nack->u.isp24.flags |=
3583 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3584
3585 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3586 nack->u.isp24.status = ntfy->u.isp24.status;
3587 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3588 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3589 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3590 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3591 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3592 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3593
3594 qla2x00_start_iocbs(vha, vha->req);
3595 return ret;
3596 }
3597
3598 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3599 struct imm_ntfy_from_isp *imm, int ha_locked)
3600 {
3601 int rc;
3602
3603 WARN_ON_ONCE(!ha_locked);
3604 rc = __qlt_send_term_imm_notif(vha, imm);
3605 pr_debug("rc = %d\n", rc);
3606 }
3607
3608 /*
3609 * If hardware_lock held on entry, might drop it, then reaquire
3610 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3611 */
3612 static int __qlt_send_term_exchange(struct qla_qpair *qpair,
3613 struct qla_tgt_cmd *cmd,
3614 struct atio_from_isp *atio)
3615 {
3616 struct scsi_qla_host *vha = qpair->vha;
3617 struct ctio7_to_24xx *ctio24;
3618 struct qla_hw_data *ha = vha->hw;
3619 request_t *pkt;
3620 int ret = 0;
3621 uint16_t temp;
3622
3623 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3624
3625 if (cmd)
3626 vha = cmd->vha;
3627
3628 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
3629 if (pkt == NULL) {
3630 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3631 "qla_target(%d): %s failed: unable to allocate "
3632 "request packet\n", vha->vp_idx, __func__);
3633 return -ENOMEM;
3634 }
3635
3636 if (cmd != NULL) {
3637 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3638 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3639 "qla_target(%d): Terminating cmd %p with "
3640 "incorrect state %d\n", vha->vp_idx, cmd,
3641 cmd->state);
3642 } else
3643 ret = 1;
3644 }
3645
3646 qpair->tgt_counters.num_term_xchg_sent++;
3647 pkt->entry_count = 1;
3648 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3649
3650 ctio24 = (struct ctio7_to_24xx *)pkt;
3651 ctio24->entry_type = CTIO_TYPE7;
3652 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
3653 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3654 ctio24->vp_index = vha->vp_idx;
3655 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
3656 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3657 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3658 CTIO7_FLAGS_TERMINATE;
3659 ctio24->u.status1.flags = cpu_to_le16(temp);
3660 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3661 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3662
3663 /* Memory Barrier */
3664 wmb();
3665 if (qpair->reqq_start_iocbs)
3666 qpair->reqq_start_iocbs(qpair);
3667 else
3668 qla2x00_start_iocbs(vha, qpair->req);
3669 return ret;
3670 }
3671
3672 static void qlt_send_term_exchange(struct qla_qpair *qpair,
3673 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3674 int ul_abort)
3675 {
3676 struct scsi_qla_host *vha;
3677 unsigned long flags = 0;
3678 int rc;
3679
3680 /* why use different vha? NPIV */
3681 if (cmd)
3682 vha = cmd->vha;
3683 else
3684 vha = qpair->vha;
3685
3686 if (ha_locked) {
3687 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3688 if (rc == -ENOMEM)
3689 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3690 goto done;
3691 }
3692 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3693 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3694 if (rc == -ENOMEM)
3695 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3696
3697 done:
3698 if (cmd && !ul_abort && !cmd->aborted) {
3699 if (cmd->sg_mapped)
3700 qlt_unmap_sg(vha, cmd);
3701 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3702 }
3703
3704 if (!ha_locked)
3705 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3706
3707 return;
3708 }
3709
3710 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3711 {
3712 struct list_head free_list;
3713 struct qla_tgt_cmd *cmd, *tcmd;
3714
3715 vha->hw->tgt.leak_exchg_thresh_hold =
3716 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3717
3718 cmd = tcmd = NULL;
3719 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3720 INIT_LIST_HEAD(&free_list);
3721 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3722
3723 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3724 list_del(&cmd->cmd_list);
3725 /* This cmd was never sent to TCM. There is no need
3726 * to schedule free or call free_cmd
3727 */
3728 qlt_free_cmd(cmd);
3729 vha->hw->tgt.num_qfull_cmds_alloc--;
3730 }
3731 }
3732 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3733 }
3734
3735 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3736 {
3737 uint32_t total_leaked;
3738
3739 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3740
3741 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3742 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3743
3744 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3745 "Chip reset due to exchange starvation: %d/%d.\n",
3746 total_leaked, vha->hw->cur_fw_xcb_count);
3747
3748 if (IS_P3P_TYPE(vha->hw))
3749 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3750 else
3751 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3752 qla2xxx_wake_dpc(vha);
3753 }
3754
3755 }
3756
3757 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3758 {
3759 struct qla_tgt *tgt = cmd->tgt;
3760 struct scsi_qla_host *vha = tgt->vha;
3761 struct se_cmd *se_cmd = &cmd->se_cmd;
3762 unsigned long flags;
3763
3764 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3765 "qla_target(%d): terminating exchange for aborted cmd=%p "
3766 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3767 se_cmd->tag);
3768
3769 spin_lock_irqsave(&cmd->cmd_lock, flags);
3770 if (cmd->aborted) {
3771 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3772 /*
3773 * It's normal to see 2 calls in this path:
3774 * 1) XFER Rdy completion + CMD_T_ABORT
3775 * 2) TCM TMR - drain_state_list
3776 */
3777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3778 "multiple abort. %p transport_state %x, t_state %x, "
3779 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3780 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
3781 return EIO;
3782 }
3783 cmd->aborted = 1;
3784 cmd->trc_flags |= TRC_ABORT;
3785 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3786
3787 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
3788 return 0;
3789 }
3790 EXPORT_SYMBOL(qlt_abort_cmd);
3791
3792 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3793 {
3794 struct fc_port *sess = cmd->sess;
3795
3796 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3797 "%s: se_cmd[%p] ox_id %04x\n",
3798 __func__, &cmd->se_cmd,
3799 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3800
3801 BUG_ON(cmd->cmd_in_wq);
3802
3803 if (cmd->sg_mapped)
3804 qlt_unmap_sg(cmd->vha, cmd);
3805
3806 if (!cmd->q_full)
3807 qlt_decr_num_pend_cmds(cmd->vha);
3808
3809 BUG_ON(cmd->sg_mapped);
3810 cmd->jiffies_at_free = get_jiffies_64();
3811 if (unlikely(cmd->free_sg))
3812 kfree(cmd->sg);
3813
3814 if (!sess || !sess->se_sess) {
3815 WARN_ON(1);
3816 return;
3817 }
3818 cmd->jiffies_at_free = get_jiffies_64();
3819 target_free_tag(sess->se_sess, &cmd->se_cmd);
3820 }
3821 EXPORT_SYMBOL(qlt_free_cmd);
3822
3823 /*
3824 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3825 */
3826 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
3827 struct qla_tgt_cmd *cmd, uint32_t status)
3828 {
3829 int term = 0;
3830 struct scsi_qla_host *vha = qpair->vha;
3831
3832 if (cmd->se_cmd.prot_op)
3833 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
3834 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3835 "se_cmd=%p tag[%x] op %#x/%s",
3836 cmd->lba, cmd->lba,
3837 cmd->num_blks, &cmd->se_cmd,
3838 cmd->atio.u.isp24.exchange_addr,
3839 cmd->se_cmd.prot_op,
3840 prot_op_str(cmd->se_cmd.prot_op));
3841
3842 if (ctio != NULL) {
3843 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3844
3845 term = !(c->flags &
3846 cpu_to_le16(OF_TERM_EXCH));
3847 } else
3848 term = 1;
3849
3850 if (term)
3851 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
3852
3853 return term;
3854 }
3855
3856
3857 /* ha->hardware_lock supposed to be held on entry */
3858 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3859 struct rsp_que *rsp, uint32_t handle, void *ctio)
3860 {
3861 void *cmd = NULL;
3862 struct req_que *req;
3863 int qid = GET_QID(handle);
3864 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
3865
3866 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3867 return NULL;
3868
3869 if (qid == rsp->req->id) {
3870 req = rsp->req;
3871 } else if (vha->hw->req_q_map[qid]) {
3872 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3873 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3874 vha->vp_idx, rsp->id, handle);
3875 req = vha->hw->req_q_map[qid];
3876 } else {
3877 return NULL;
3878 }
3879
3880 h &= QLA_CMD_HANDLE_MASK;
3881
3882 if (h != QLA_TGT_NULL_HANDLE) {
3883 if (unlikely(h >= req->num_outstanding_cmds)) {
3884 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3885 "qla_target(%d): Wrong handle %x received\n",
3886 vha->vp_idx, handle);
3887 return NULL;
3888 }
3889
3890 cmd = (void *) req->outstanding_cmds[h];
3891 if (unlikely(cmd == NULL)) {
3892 ql_dbg(ql_dbg_async, vha, 0xe053,
3893 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3894 vha->vp_idx, handle, req->id, rsp->id);
3895 return NULL;
3896 }
3897 req->outstanding_cmds[h] = NULL;
3898 } else if (ctio != NULL) {
3899 /* We can't get loop ID from CTIO7 */
3900 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3901 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3902 "support NULL handles\n", vha->vp_idx);
3903 return NULL;
3904 }
3905
3906 return cmd;
3907 }
3908
3909 /*
3910 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3911 */
3912 static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3913 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
3914 {
3915 struct qla_hw_data *ha = vha->hw;
3916 struct se_cmd *se_cmd;
3917 struct qla_tgt_cmd *cmd;
3918 struct qla_qpair *qpair = rsp->qpair;
3919
3920 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3921 /* That could happen only in case of an error/reset/abort */
3922 if (status != CTIO_SUCCESS) {
3923 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3924 "Intermediate CTIO received"
3925 " (status %x)\n", status);
3926 }
3927 return;
3928 }
3929
3930 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
3931 if (cmd == NULL)
3932 return;
3933
3934 se_cmd = &cmd->se_cmd;
3935 cmd->cmd_sent_to_fw = 0;
3936
3937 qlt_unmap_sg(vha, cmd);
3938
3939 if (unlikely(status != CTIO_SUCCESS)) {
3940 switch (status & 0xFFFF) {
3941 case CTIO_INVALID_RX_ID:
3942 if (printk_ratelimit())
3943 dev_info(&vha->hw->pdev->dev,
3944 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n",
3945 vha->vp_idx, cmd->atio.u.isp24.attr,
3946 ((cmd->ctio_flags >> 9) & 0xf),
3947 cmd->ctio_flags);
3948
3949 break;
3950 case CTIO_LIP_RESET:
3951 case CTIO_TARGET_RESET:
3952 case CTIO_ABORTED:
3953 /* driver request abort via Terminate exchange */
3954 case CTIO_TIMEOUT:
3955 /* They are OK */
3956 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3957 "qla_target(%d): CTIO with "
3958 "status %#x received, state %x, se_cmd %p, "
3959 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3960 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3961 status, cmd->state, se_cmd);
3962 break;
3963
3964 case CTIO_PORT_LOGGED_OUT:
3965 case CTIO_PORT_UNAVAILABLE:
3966 {
3967 int logged_out =
3968 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3969
3970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3971 "qla_target(%d): CTIO with %s status %x "
3972 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3973 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
3974 status, cmd->state, se_cmd);
3975
3976 if (logged_out && cmd->sess) {
3977 /*
3978 * Session is already logged out, but we need
3979 * to notify initiator, who's not aware of this
3980 */
3981 cmd->sess->send_els_logo = 1;
3982 ql_dbg(ql_dbg_disc, vha, 0x20f8,
3983 "%s %d %8phC post del sess\n",
3984 __func__, __LINE__, cmd->sess->port_name);
3985
3986 qlt_schedule_sess_for_deletion(cmd->sess);
3987 }
3988 break;
3989 }
3990 case CTIO_DIF_ERROR: {
3991 struct ctio_crc_from_fw *crc =
3992 (struct ctio_crc_from_fw *)ctio;
3993 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3994 "qla_target(%d): CTIO with DIF_ERROR status %x "
3995 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3996 "expect_dif[0x%llx]\n",
3997 vha->vp_idx, status, cmd->state, se_cmd,
3998 *((u64 *)&crc->actual_dif[0]),
3999 *((u64 *)&crc->expected_dif[0]));
4000
4001 qlt_handle_dif_error(qpair, cmd, ctio);
4002 return;
4003 }
4004 default:
4005 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
4006 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
4007 vha->vp_idx, status, cmd->state, se_cmd);
4008 break;
4009 }
4010
4011
4012 /* "cmd->aborted" means
4013 * cmd is already aborted/terminated, we don't
4014 * need to terminate again. The exchange is already
4015 * cleaned up/freed at FW level. Just cleanup at driver
4016 * level.
4017 */
4018 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
4019 (!cmd->aborted)) {
4020 cmd->trc_flags |= TRC_CTIO_ERR;
4021 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
4022 return;
4023 }
4024 }
4025
4026 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
4027 cmd->trc_flags |= TRC_CTIO_DONE;
4028 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
4029 cmd->state = QLA_TGT_STATE_DATA_IN;
4030
4031 if (status == CTIO_SUCCESS)
4032 cmd->write_data_transferred = 1;
4033
4034 ha->tgt.tgt_ops->handle_data(cmd);
4035 return;
4036 } else if (cmd->aborted) {
4037 cmd->trc_flags |= TRC_CTIO_ABORTED;
4038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
4039 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
4040 } else {
4041 cmd->trc_flags |= TRC_CTIO_STRANGE;
4042 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
4043 "qla_target(%d): A command in state (%d) should "
4044 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
4045 }
4046
4047 if (unlikely(status != CTIO_SUCCESS) &&
4048 !cmd->aborted) {
4049 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
4050 dump_stack();
4051 }
4052
4053 ha->tgt.tgt_ops->free_cmd(cmd);
4054 }
4055
4056 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
4057 uint8_t task_codes)
4058 {
4059 int fcp_task_attr;
4060
4061 switch (task_codes) {
4062 case ATIO_SIMPLE_QUEUE:
4063 fcp_task_attr = TCM_SIMPLE_TAG;
4064 break;
4065 case ATIO_HEAD_OF_QUEUE:
4066 fcp_task_attr = TCM_HEAD_TAG;
4067 break;
4068 case ATIO_ORDERED_QUEUE:
4069 fcp_task_attr = TCM_ORDERED_TAG;
4070 break;
4071 case ATIO_ACA_QUEUE:
4072 fcp_task_attr = TCM_ACA_TAG;
4073 break;
4074 case ATIO_UNTAGGED:
4075 fcp_task_attr = TCM_SIMPLE_TAG;
4076 break;
4077 default:
4078 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4079 "qla_target: unknown task code %x, use ORDERED instead\n",
4080 task_codes);
4081 fcp_task_attr = TCM_ORDERED_TAG;
4082 break;
4083 }
4084
4085 return fcp_task_attr;
4086 }
4087
4088 /*
4089 * Process context for I/O path into tcm_qla2xxx code
4090 */
4091 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
4092 {
4093 scsi_qla_host_t *vha = cmd->vha;
4094 struct qla_hw_data *ha = vha->hw;
4095 struct fc_port *sess = cmd->sess;
4096 struct atio_from_isp *atio = &cmd->atio;
4097 unsigned char *cdb;
4098 unsigned long flags;
4099 uint32_t data_length;
4100 int ret, fcp_task_attr, data_dir, bidi = 0;
4101 struct qla_qpair *qpair = cmd->qpair;
4102
4103 cmd->cmd_in_wq = 0;
4104 cmd->trc_flags |= TRC_DO_WORK;
4105
4106 if (cmd->aborted) {
4107 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4108 "cmd with tag %u is aborted\n",
4109 cmd->atio.u.isp24.exchange_addr);
4110 goto out_term;
4111 }
4112
4113 spin_lock_init(&cmd->cmd_lock);
4114 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
4115 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
4116
4117 if (atio->u.isp24.fcp_cmnd.rddata &&
4118 atio->u.isp24.fcp_cmnd.wrdata) {
4119 bidi = 1;
4120 data_dir = DMA_TO_DEVICE;
4121 } else if (atio->u.isp24.fcp_cmnd.rddata)
4122 data_dir = DMA_FROM_DEVICE;
4123 else if (atio->u.isp24.fcp_cmnd.wrdata)
4124 data_dir = DMA_TO_DEVICE;
4125 else
4126 data_dir = DMA_NONE;
4127
4128 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4129 atio->u.isp24.fcp_cmnd.task_attr);
4130 data_length = get_datalen_for_atio(atio);
4131
4132 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4133 fcp_task_attr, data_dir, bidi);
4134 if (ret != 0)
4135 goto out_term;
4136 /*
4137 * Drop extra session reference from qlt_handle_cmd_for_atio().
4138 */
4139 ha->tgt.tgt_ops->put_sess(sess);
4140 return;
4141
4142 out_term:
4143 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
4144 /*
4145 * cmd has not sent to target yet, so pass NULL as the second
4146 * argument to qlt_send_term_exchange() and free the memory here.
4147 */
4148 cmd->trc_flags |= TRC_DO_WORK_ERR;
4149 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4150 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
4151
4152 qlt_decr_num_pend_cmds(vha);
4153 target_free_tag(sess->se_sess, &cmd->se_cmd);
4154 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4155
4156 ha->tgt.tgt_ops->put_sess(sess);
4157 }
4158
4159 static void qlt_do_work(struct work_struct *work)
4160 {
4161 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
4162 scsi_qla_host_t *vha = cmd->vha;
4163 unsigned long flags;
4164
4165 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4166 list_del(&cmd->cmd_list);
4167 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4168
4169 __qlt_do_work(cmd);
4170 }
4171
4172 void qlt_clr_qp_table(struct scsi_qla_host *vha)
4173 {
4174 unsigned long flags;
4175 struct qla_hw_data *ha = vha->hw;
4176 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4177 void *node;
4178 u64 key = 0;
4179
4180 ql_log(ql_log_info, vha, 0x706c,
4181 "User update Number of Active Qpairs %d\n",
4182 ha->tgt.num_act_qpairs);
4183
4184 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4185
4186 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4187 btree_remove64(&tgt->lun_qpair_map, key);
4188
4189 ha->base_qpair->lun_cnt = 0;
4190 for (key = 0; key < ha->max_qpairs; key++)
4191 if (ha->queue_pair_map[key])
4192 ha->queue_pair_map[key]->lun_cnt = 0;
4193
4194 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4195 }
4196
4197 static void qlt_assign_qpair(struct scsi_qla_host *vha,
4198 struct qla_tgt_cmd *cmd)
4199 {
4200 struct qla_qpair *qpair, *qp;
4201 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4202 struct qla_qpair_hint *h;
4203
4204 if (vha->flags.qpairs_available) {
4205 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4206 if (unlikely(!h)) {
4207 /* spread lun to qpair ratio evently */
4208 int lcnt = 0, rc;
4209 struct scsi_qla_host *base_vha =
4210 pci_get_drvdata(vha->hw->pdev);
4211
4212 qpair = vha->hw->base_qpair;
4213 if (qpair->lun_cnt == 0) {
4214 qpair->lun_cnt++;
4215 h = qla_qpair_to_hint(tgt, qpair);
4216 BUG_ON(!h);
4217 rc = btree_insert64(&tgt->lun_qpair_map,
4218 cmd->unpacked_lun, h, GFP_ATOMIC);
4219 if (rc) {
4220 qpair->lun_cnt--;
4221 ql_log(ql_log_info, vha, 0xd037,
4222 "Unable to insert lun %llx into lun_qpair_map\n",
4223 cmd->unpacked_lun);
4224 }
4225 goto out;
4226 } else {
4227 lcnt = qpair->lun_cnt;
4228 }
4229
4230 h = NULL;
4231 list_for_each_entry(qp, &base_vha->qp_list,
4232 qp_list_elem) {
4233 if (qp->lun_cnt == 0) {
4234 qp->lun_cnt++;
4235 h = qla_qpair_to_hint(tgt, qp);
4236 BUG_ON(!h);
4237 rc = btree_insert64(&tgt->lun_qpair_map,
4238 cmd->unpacked_lun, h, GFP_ATOMIC);
4239 if (rc) {
4240 qp->lun_cnt--;
4241 ql_log(ql_log_info, vha, 0xd038,
4242 "Unable to insert lun %llx into lun_qpair_map\n",
4243 cmd->unpacked_lun);
4244 }
4245 qpair = qp;
4246 goto out;
4247 } else {
4248 if (qp->lun_cnt < lcnt) {
4249 lcnt = qp->lun_cnt;
4250 qpair = qp;
4251 continue;
4252 }
4253 }
4254 }
4255 BUG_ON(!qpair);
4256 qpair->lun_cnt++;
4257 h = qla_qpair_to_hint(tgt, qpair);
4258 BUG_ON(!h);
4259 rc = btree_insert64(&tgt->lun_qpair_map,
4260 cmd->unpacked_lun, h, GFP_ATOMIC);
4261 if (rc) {
4262 qpair->lun_cnt--;
4263 ql_log(ql_log_info, vha, 0xd039,
4264 "Unable to insert lun %llx into lun_qpair_map\n",
4265 cmd->unpacked_lun);
4266 }
4267 }
4268 } else {
4269 h = &tgt->qphints[0];
4270 }
4271 out:
4272 cmd->qpair = h->qpair;
4273 cmd->se_cmd.cpuid = h->cpuid;
4274 }
4275
4276 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
4277 struct fc_port *sess,
4278 struct atio_from_isp *atio)
4279 {
4280 struct se_session *se_sess = sess->se_sess;
4281 struct qla_tgt_cmd *cmd;
4282 int tag, cpu;
4283
4284 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
4285 if (tag < 0)
4286 return NULL;
4287
4288 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4289 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4290 cmd->cmd_type = TYPE_TGT_CMD;
4291 memcpy(&cmd->atio, atio, sizeof(*atio));
4292 cmd->state = QLA_TGT_STATE_NEW;
4293 cmd->tgt = vha->vha_tgt.qla_tgt;
4294 qlt_incr_num_pend_cmds(vha);
4295 cmd->vha = vha;
4296 cmd->se_cmd.map_tag = tag;
4297 cmd->se_cmd.map_cpu = cpu;
4298 cmd->sess = sess;
4299 cmd->loop_id = sess->loop_id;
4300 cmd->conf_compl_supported = sess->conf_compl_supported;
4301
4302 cmd->trc_flags = 0;
4303 cmd->jiffies_at_alloc = get_jiffies_64();
4304
4305 cmd->unpacked_lun = scsilun_to_int(
4306 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4307 qlt_assign_qpair(vha, cmd);
4308 cmd->reset_count = vha->hw->base_qpair->chip_reset;
4309 cmd->vp_idx = vha->vp_idx;
4310
4311 return cmd;
4312 }
4313
4314 /* ha->hardware_lock supposed to be held on entry */
4315 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4316 struct atio_from_isp *atio)
4317 {
4318 struct qla_hw_data *ha = vha->hw;
4319 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4320 struct fc_port *sess;
4321 struct qla_tgt_cmd *cmd;
4322 unsigned long flags;
4323 port_id_t id;
4324
4325 if (unlikely(tgt->tgt_stop)) {
4326 ql_dbg(ql_dbg_io, vha, 0x3061,
4327 "New command while device %p is shutting down\n", tgt);
4328 return -ENODEV;
4329 }
4330
4331 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
4332 if (IS_SW_RESV_ADDR(id))
4333 return -EBUSY;
4334
4335 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4336 if (unlikely(!sess))
4337 return -EFAULT;
4338
4339 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4340 * session deletion, but it's still in sess_del_work wq */
4341 if (sess->deleted) {
4342 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
4343 "New command while old session %p is being deleted\n",
4344 sess);
4345 return -EFAULT;
4346 }
4347
4348 /*
4349 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4350 */
4351 if (!kref_get_unless_zero(&sess->sess_kref)) {
4352 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
4353 "%s: kref_get fail, %8phC oxid %x \n",
4354 __func__, sess->port_name,
4355 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4356 return -EFAULT;
4357 }
4358
4359 cmd = qlt_get_tag(vha, sess, atio);
4360 if (!cmd) {
4361 ql_dbg(ql_dbg_io, vha, 0x3062,
4362 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4363 ha->tgt.tgt_ops->put_sess(sess);
4364 return -EBUSY;
4365 }
4366
4367 cmd->cmd_in_wq = 1;
4368 cmd->trc_flags |= TRC_NEW_CMD;
4369
4370 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4371 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4372 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4373
4374 INIT_WORK(&cmd->work, qlt_do_work);
4375 if (vha->flags.qpairs_available) {
4376 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4377 } else if (ha->msix_count) {
4378 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4379 queue_work_on(smp_processor_id(), qla_tgt_wq,
4380 &cmd->work);
4381 else
4382 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4383 &cmd->work);
4384 } else {
4385 queue_work(qla_tgt_wq, &cmd->work);
4386 }
4387
4388 return 0;
4389 }
4390
4391 /* ha->hardware_lock supposed to be held on entry */
4392 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
4393 int fn, void *iocb, int flags)
4394 {
4395 struct scsi_qla_host *vha = sess->vha;
4396 struct qla_hw_data *ha = vha->hw;
4397 struct qla_tgt_mgmt_cmd *mcmd;
4398 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4399 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
4400
4401 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4402 if (!mcmd) {
4403 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4404 "qla_target(%d): Allocation of management "
4405 "command failed, some commands and their data could "
4406 "leak\n", vha->vp_idx);
4407 return -ENOMEM;
4408 }
4409 memset(mcmd, 0, sizeof(*mcmd));
4410 mcmd->sess = sess;
4411
4412 if (iocb) {
4413 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4414 sizeof(mcmd->orig_iocb.imm_ntfy));
4415 }
4416 mcmd->tmr_func = fn;
4417 mcmd->flags = flags;
4418 mcmd->reset_count = ha->base_qpair->chip_reset;
4419 mcmd->qpair = h->qpair;
4420 mcmd->vha = vha;
4421 mcmd->se_cmd.cpuid = h->cpuid;
4422 mcmd->unpacked_lun = lun;
4423
4424 switch (fn) {
4425 case QLA_TGT_LUN_RESET:
4426 case QLA_TGT_CLEAR_TS:
4427 case QLA_TGT_ABORT_TS:
4428 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4429 /* fall through */
4430 case QLA_TGT_CLEAR_ACA:
4431 h = qlt_find_qphint(vha, mcmd->unpacked_lun);
4432 mcmd->qpair = h->qpair;
4433 mcmd->se_cmd.cpuid = h->cpuid;
4434 break;
4435
4436 case QLA_TGT_TARGET_RESET:
4437 case QLA_TGT_NEXUS_LOSS_SESS:
4438 case QLA_TGT_NEXUS_LOSS:
4439 case QLA_TGT_ABORT_ALL:
4440 default:
4441 /* no-op */
4442 break;
4443 }
4444
4445 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
4446 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq,
4447 &mcmd->work);
4448
4449 return 0;
4450 }
4451
4452 /* ha->hardware_lock supposed to be held on entry */
4453 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4454 {
4455 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4456 struct qla_hw_data *ha = vha->hw;
4457 struct fc_port *sess;
4458 u64 unpacked_lun;
4459 int fn;
4460 unsigned long flags;
4461
4462 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4463
4464 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4465 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4466 a->u.isp24.fcp_hdr.s_id);
4467 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4468
4469 unpacked_lun =
4470 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4471
4472 if (sess == NULL || sess->deleted)
4473 return -EFAULT;
4474
4475 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4476 }
4477
4478 /* ha->hardware_lock supposed to be held on entry */
4479 static int __qlt_abort_task(struct scsi_qla_host *vha,
4480 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
4481 {
4482 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4483 struct qla_hw_data *ha = vha->hw;
4484 struct qla_tgt_mgmt_cmd *mcmd;
4485 u64 unpacked_lun;
4486 int rc;
4487
4488 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4489 if (mcmd == NULL) {
4490 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4491 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4492 vha->vp_idx, __func__);
4493 return -ENOMEM;
4494 }
4495 memset(mcmd, 0, sizeof(*mcmd));
4496
4497 mcmd->sess = sess;
4498 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4499 sizeof(mcmd->orig_iocb.imm_ntfy));
4500
4501 unpacked_lun =
4502 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4503 mcmd->reset_count = ha->base_qpair->chip_reset;
4504 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
4505 mcmd->qpair = ha->base_qpair;
4506
4507 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
4508 le16_to_cpu(iocb->u.isp2x.seq_id));
4509 if (rc != 0) {
4510 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4511 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4512 vha->vp_idx, rc);
4513 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4514 return -EFAULT;
4515 }
4516
4517 return 0;
4518 }
4519
4520 /* ha->hardware_lock supposed to be held on entry */
4521 static int qlt_abort_task(struct scsi_qla_host *vha,
4522 struct imm_ntfy_from_isp *iocb)
4523 {
4524 struct qla_hw_data *ha = vha->hw;
4525 struct fc_port *sess;
4526 int loop_id;
4527 unsigned long flags;
4528
4529 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4530
4531 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4532 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4533 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4534
4535 if (sess == NULL) {
4536 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4537 "qla_target(%d): task abort for unexisting "
4538 "session\n", vha->vp_idx);
4539 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4540 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4541 }
4542
4543 return __qlt_abort_task(vha, iocb, sess);
4544 }
4545
4546 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4547 {
4548 if (rc != MBS_COMMAND_COMPLETE) {
4549 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4550 "%s: se_sess %p / sess %p from"
4551 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4552 " LOGO failed: %#x\n",
4553 __func__,
4554 fcport->se_sess,
4555 fcport,
4556 fcport->port_name, fcport->loop_id,
4557 fcport->d_id.b.domain, fcport->d_id.b.area,
4558 fcport->d_id.b.al_pa, rc);
4559 }
4560
4561 fcport->logout_completed = 1;
4562 }
4563
4564 /*
4565 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4566 *
4567 * Schedules sessions with matching port_id/loop_id but different wwn for
4568 * deletion. Returns existing session with matching wwn if present.
4569 * Null otherwise.
4570 */
4571 struct fc_port *
4572 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
4573 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
4574 {
4575 struct fc_port *sess = NULL, *other_sess;
4576 uint64_t other_wwn;
4577
4578 *conflict_sess = NULL;
4579
4580 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
4581
4582 other_wwn = wwn_to_u64(other_sess->port_name);
4583
4584 if (wwn == other_wwn) {
4585 WARN_ON(sess);
4586 sess = other_sess;
4587 continue;
4588 }
4589
4590 /* find other sess with nport_id collision */
4591 if (port_id.b24 == other_sess->d_id.b24) {
4592 if (loop_id != other_sess->loop_id) {
4593 ql_dbg(ql_dbg_disc, vha, 0x1000c,
4594 "Invalidating sess %p loop_id %d wwn %llx.\n",
4595 other_sess, other_sess->loop_id, other_wwn);
4596
4597 /*
4598 * logout_on_delete is set by default, but another
4599 * session that has the same s_id/loop_id combo
4600 * might have cleared it when requested this session
4601 * deletion, so don't touch it
4602 */
4603 qlt_schedule_sess_for_deletion(other_sess);
4604 } else {
4605 /*
4606 * Another wwn used to have our s_id/loop_id
4607 * kill the session, but don't free the loop_id
4608 */
4609 ql_dbg(ql_dbg_disc, vha, 0xf01b,
4610 "Invalidating sess %p loop_id %d wwn %llx.\n",
4611 other_sess, other_sess->loop_id, other_wwn);
4612
4613 other_sess->keep_nport_handle = 1;
4614 if (other_sess->disc_state != DSC_DELETED)
4615 *conflict_sess = other_sess;
4616 qlt_schedule_sess_for_deletion(other_sess);
4617 }
4618 continue;
4619 }
4620
4621 /* find other sess with nport handle collision */
4622 if ((loop_id == other_sess->loop_id) &&
4623 (loop_id != FC_NO_LOOP_ID)) {
4624 ql_dbg(ql_dbg_disc, vha, 0x1000d,
4625 "Invalidating sess %p loop_id %d wwn %llx.\n",
4626 other_sess, other_sess->loop_id, other_wwn);
4627
4628 /* Same loop_id but different s_id
4629 * Ok to kill and logout */
4630 qlt_schedule_sess_for_deletion(other_sess);
4631 }
4632 }
4633
4634 return sess;
4635 }
4636
4637 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4638 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4639 {
4640 struct qla_tgt_sess_op *op;
4641 struct qla_tgt_cmd *cmd;
4642 uint32_t key;
4643 int count = 0;
4644 unsigned long flags;
4645
4646 key = (((u32)s_id->b.domain << 16) |
4647 ((u32)s_id->b.area << 8) |
4648 ((u32)s_id->b.al_pa));
4649
4650 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4651 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4652 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4653
4654 if (op_key == key) {
4655 op->aborted = true;
4656 count++;
4657 }
4658 }
4659
4660 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4661 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4662
4663 if (op_key == key) {
4664 op->aborted = true;
4665 count++;
4666 }
4667 }
4668
4669 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4670 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4671
4672 if (cmd_key == key) {
4673 cmd->aborted = 1;
4674 count++;
4675 }
4676 }
4677 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4678
4679 return count;
4680 }
4681
4682 static int qlt_handle_login(struct scsi_qla_host *vha,
4683 struct imm_ntfy_from_isp *iocb)
4684 {
4685 struct fc_port *sess = NULL, *conflict_sess = NULL;
4686 uint64_t wwn;
4687 port_id_t port_id;
4688 uint16_t loop_id, wd3_lo;
4689 int res = 0;
4690 struct qlt_plogi_ack_t *pla;
4691 unsigned long flags;
4692
4693 lockdep_assert_held(&vha->hw->hardware_lock);
4694
4695 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4696
4697 port_id.b.domain = iocb->u.isp24.port_id[2];
4698 port_id.b.area = iocb->u.isp24.port_id[1];
4699 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4700 port_id.b.rsvd_1 = 0;
4701
4702 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4703
4704 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4705 abort_cmds_for_s_id(vha, &port_id);
4706
4707 if (wwn) {
4708 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4709 sess = qlt_find_sess_invalidate_other(vha, wwn,
4710 port_id, loop_id, &conflict_sess);
4711 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4712 } else {
4713 ql_dbg(ql_dbg_disc, vha, 0xffff,
4714 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ",
4715 __func__, __LINE__, loop_id, port_id.b24);
4716 qlt_send_term_imm_notif(vha, iocb, 1);
4717 goto out;
4718 }
4719
4720 if (IS_SW_RESV_ADDR(port_id)) {
4721 res = 1;
4722 goto out;
4723 }
4724
4725 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4726 if (!pla) {
4727 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff,
4728 "%s %d %8phC Term INOT due to mem alloc fail",
4729 __func__, __LINE__,
4730 iocb->u.isp24.port_name);
4731 qlt_send_term_imm_notif(vha, iocb, 1);
4732 goto out;
4733 }
4734
4735 if (conflict_sess) {
4736 conflict_sess->login_gen++;
4737 qlt_plogi_ack_link(vha, pla, conflict_sess,
4738 QLT_PLOGI_LINK_CONFLICT);
4739 }
4740
4741 if (!sess) {
4742 pla->ref_count++;
4743 ql_dbg(ql_dbg_disc, vha, 0xffff,
4744 "%s %d %8phC post new sess\n",
4745 __func__, __LINE__, iocb->u.isp24.port_name);
4746 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4747 qla24xx_post_newsess_work(vha, &port_id,
4748 iocb->u.isp24.port_name,
4749 iocb->u.isp24.u.plogi.node_name,
4750 pla, FC4_TYPE_UNKNOWN);
4751 else
4752 qla24xx_post_newsess_work(vha, &port_id,
4753 iocb->u.isp24.port_name, NULL,
4754 pla, FC4_TYPE_UNKNOWN);
4755
4756 goto out;
4757 }
4758
4759 if (sess->disc_state == DSC_UPD_FCPORT) {
4760 u16 sec;
4761
4762 /*
4763 * Remote port registration is still going on from
4764 * previous login. Allow it to finish before we
4765 * accept the new login.
4766 */
4767 sess->next_disc_state = DSC_DELETE_PEND;
4768 sec = jiffies_to_msecs(jiffies -
4769 sess->jiffies_at_registration) / 1000;
4770 if (sess->sec_since_registration < sec && sec &&
4771 !(sec % 5)) {
4772 sess->sec_since_registration = sec;
4773 ql_dbg(ql_dbg_disc, vha, 0xffff,
4774 "%s %8phC - Slow Rport registration (%d Sec)\n",
4775 __func__, sess->port_name, sec);
4776 }
4777
4778 if (!conflict_sess) {
4779 list_del(&pla->list);
4780 kmem_cache_free(qla_tgt_plogi_cachep, pla);
4781 }
4782
4783 qlt_send_term_imm_notif(vha, iocb, 1);
4784 goto out;
4785 }
4786
4787 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4788 sess->d_id = port_id;
4789 sess->login_gen++;
4790
4791 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4792 sess->fw_login_state = DSC_LS_PRLI_PEND;
4793 sess->local = 0;
4794 sess->loop_id = loop_id;
4795 sess->d_id = port_id;
4796 sess->fw_login_state = DSC_LS_PRLI_PEND;
4797 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4798
4799 if (wd3_lo & BIT_7)
4800 sess->conf_compl_supported = 1;
4801
4802 if ((wd3_lo & BIT_4) == 0)
4803 sess->port_type = FCT_INITIATOR;
4804 else
4805 sess->port_type = FCT_TARGET;
4806
4807 } else
4808 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4809
4810
4811 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4812 "%s %d %8phC DS %d\n",
4813 __func__, __LINE__, sess->port_name, sess->disc_state);
4814
4815 switch (sess->disc_state) {
4816 case DSC_DELETED:
4817 case DSC_LOGIN_PEND:
4818 qlt_plogi_ack_unref(vha, pla);
4819 break;
4820
4821 default:
4822 /*
4823 * Under normal circumstances we want to release nport handle
4824 * during LOGO process to avoid nport handle leaks inside FW.
4825 * The exception is when LOGO is done while another PLOGI with
4826 * the same nport handle is waiting as might be the case here.
4827 * Note: there is always a possibily of a race where session
4828 * deletion has already started for other reasons (e.g. ACL
4829 * removal) and now PLOGI arrives:
4830 * 1. if PLOGI arrived in FW after nport handle has been freed,
4831 * FW must have assigned this PLOGI a new/same handle and we
4832 * can proceed ACK'ing it as usual when session deletion
4833 * completes.
4834 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4835 * bit reached it, the handle has now been released. We'll
4836 * get an error when we ACK this PLOGI. Nothing will be sent
4837 * back to initiator. Initiator should eventually retry
4838 * PLOGI and situation will correct itself.
4839 */
4840 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4841 (sess->d_id.b24 == port_id.b24));
4842
4843 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4844 "%s %d %8phC post del sess\n",
4845 __func__, __LINE__, sess->port_name);
4846
4847
4848 qlt_schedule_sess_for_deletion(sess);
4849 break;
4850 }
4851 out:
4852 return res;
4853 }
4854
4855 /*
4856 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4857 */
4858 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4859 struct imm_ntfy_from_isp *iocb)
4860 {
4861 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4862 struct qla_hw_data *ha = vha->hw;
4863 struct fc_port *sess = NULL, *conflict_sess = NULL;
4864 uint64_t wwn;
4865 port_id_t port_id;
4866 uint16_t loop_id;
4867 uint16_t wd3_lo;
4868 int res = 0;
4869 unsigned long flags;
4870
4871 lockdep_assert_held(&ha->hardware_lock);
4872
4873 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4874
4875 port_id.b.domain = iocb->u.isp24.port_id[2];
4876 port_id.b.area = iocb->u.isp24.port_id[1];
4877 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4878 port_id.b.rsvd_1 = 0;
4879
4880 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4881
4882 ql_dbg(ql_dbg_disc, vha, 0xf026,
4883 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4884 vha->vp_idx, iocb->u.isp24.port_id[2],
4885 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4886 iocb->u.isp24.status_subcode, loop_id,
4887 iocb->u.isp24.port_name);
4888
4889 /* res = 1 means ack at the end of thread
4890 * res = 0 means ack async/later.
4891 */
4892 switch (iocb->u.isp24.status_subcode) {
4893 case ELS_PLOGI:
4894 res = qlt_handle_login(vha, iocb);
4895 break;
4896
4897 case ELS_PRLI:
4898 if (N2N_TOPO(ha)) {
4899 sess = qla2x00_find_fcport_by_wwpn(vha,
4900 iocb->u.isp24.port_name, 1);
4901
4902 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4903 ql_dbg(ql_dbg_disc, vha, 0xffff,
4904 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4905 __func__, __LINE__,
4906 iocb->u.isp24.port_name);
4907 qlt_send_term_imm_notif(vha, iocb, 1);
4908 break;
4909 }
4910
4911 res = qlt_handle_login(vha, iocb);
4912 break;
4913 }
4914
4915 if (IS_SW_RESV_ADDR(port_id)) {
4916 res = 1;
4917 break;
4918 }
4919
4920 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4921
4922 if (wwn) {
4923 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4924 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4925 loop_id, &conflict_sess);
4926 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4927 }
4928
4929 if (conflict_sess) {
4930 switch (conflict_sess->disc_state) {
4931 case DSC_DELETED:
4932 case DSC_DELETE_PEND:
4933 break;
4934 default:
4935 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4936 "PRLI with conflicting sess %p port %8phC\n",
4937 conflict_sess, conflict_sess->port_name);
4938 conflict_sess->fw_login_state =
4939 DSC_LS_PORT_UNAVAIL;
4940 qlt_send_term_imm_notif(vha, iocb, 1);
4941 res = 0;
4942 break;
4943 }
4944 }
4945
4946 if (sess != NULL) {
4947 bool delete = false;
4948 int sec;
4949
4950 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4951 switch (sess->fw_login_state) {
4952 case DSC_LS_PLOGI_PEND:
4953 case DSC_LS_PLOGI_COMP:
4954 case DSC_LS_PRLI_COMP:
4955 break;
4956 default:
4957 delete = true;
4958 break;
4959 }
4960
4961 switch (sess->disc_state) {
4962 case DSC_UPD_FCPORT:
4963 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4964 flags);
4965
4966 sec = jiffies_to_msecs(jiffies -
4967 sess->jiffies_at_registration)/1000;
4968 if (sess->sec_since_registration < sec && sec &&
4969 !(sec % 5)) {
4970 sess->sec_since_registration = sec;
4971 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
4972 "%s %8phC : Slow Rport registration(%d Sec)\n",
4973 __func__, sess->port_name, sec);
4974 }
4975 qlt_send_term_imm_notif(vha, iocb, 1);
4976 return 0;
4977
4978 case DSC_LOGIN_PEND:
4979 case DSC_GPDB:
4980 case DSC_LOGIN_COMPLETE:
4981 case DSC_ADISC:
4982 delete = false;
4983 break;
4984 default:
4985 break;
4986 }
4987
4988 if (delete) {
4989 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4990 flags);
4991 /*
4992 * Impatient initiator sent PRLI before last
4993 * PLOGI could finish. Will force him to re-try,
4994 * while last one finishes.
4995 */
4996 ql_log(ql_log_warn, sess->vha, 0xf095,
4997 "sess %p PRLI received, before plogi ack.\n",
4998 sess);
4999 qlt_send_term_imm_notif(vha, iocb, 1);
5000 res = 0;
5001 break;
5002 }
5003
5004 /*
5005 * This shouldn't happen under normal circumstances,
5006 * since we have deleted the old session during PLOGI
5007 */
5008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
5009 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
5010 sess->loop_id, sess, iocb->u.isp24.nport_handle);
5011
5012 sess->local = 0;
5013 sess->loop_id = loop_id;
5014 sess->d_id = port_id;
5015 sess->fw_login_state = DSC_LS_PRLI_PEND;
5016
5017 if (wd3_lo & BIT_7)
5018 sess->conf_compl_supported = 1;
5019
5020 if ((wd3_lo & BIT_4) == 0)
5021 sess->port_type = FCT_INITIATOR;
5022 else
5023 sess->port_type = FCT_TARGET;
5024
5025 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
5026 }
5027 res = 1; /* send notify ack */
5028
5029 /* Make session global (not used in fabric mode) */
5030 if (ha->current_topology != ISP_CFG_F) {
5031 if (sess) {
5032 ql_dbg(ql_dbg_disc, vha, 0x20fa,
5033 "%s %d %8phC post nack\n",
5034 __func__, __LINE__, sess->port_name);
5035 qla24xx_post_nack_work(vha, sess, iocb,
5036 SRB_NACK_PRLI);
5037 res = 0;
5038 } else {
5039 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
5040 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
5041 qla2xxx_wake_dpc(vha);
5042 }
5043 } else {
5044 if (sess) {
5045 ql_dbg(ql_dbg_disc, vha, 0x20fb,
5046 "%s %d %8phC post nack\n",
5047 __func__, __LINE__, sess->port_name);
5048 qla24xx_post_nack_work(vha, sess, iocb,
5049 SRB_NACK_PRLI);
5050 res = 0;
5051 }
5052 }
5053 break;
5054
5055 case ELS_TPRLO:
5056 if (le16_to_cpu(iocb->u.isp24.flags) &
5057 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
5058 loop_id = 0xFFFF;
5059 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
5060 res = 1;
5061 break;
5062 }
5063 /* fall through */
5064 case ELS_LOGO:
5065 case ELS_PRLO:
5066 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5067 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
5068 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5069
5070 if (sess) {
5071 sess->login_gen++;
5072 sess->fw_login_state = DSC_LS_LOGO_PEND;
5073 sess->logo_ack_needed = 1;
5074 memcpy(sess->iocb, iocb, IOCB_SIZE);
5075 }
5076
5077 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5078
5079 ql_dbg(ql_dbg_disc, vha, 0x20fc,
5080 "%s: logo %llx res %d sess %p ",
5081 __func__, wwn, res, sess);
5082 if (res == 0) {
5083 /*
5084 * cmd went upper layer, look for qlt_xmit_tm_rsp()
5085 * for LOGO_ACK & sess delete
5086 */
5087 BUG_ON(!sess);
5088 res = 0;
5089 } else {
5090 /* cmd did not go to upper layer. */
5091 if (sess) {
5092 qlt_schedule_sess_for_deletion(sess);
5093 res = 0;
5094 }
5095 /* else logo will be ack */
5096 }
5097 break;
5098 case ELS_PDISC:
5099 case ELS_ADISC:
5100 {
5101 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5102
5103 if (tgt->link_reinit_iocb_pending) {
5104 qlt_send_notify_ack(ha->base_qpair,
5105 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5106 tgt->link_reinit_iocb_pending = 0;
5107 }
5108
5109 sess = qla2x00_find_fcport_by_wwpn(vha,
5110 iocb->u.isp24.port_name, 1);
5111 if (sess) {
5112 ql_dbg(ql_dbg_disc, vha, 0x20fd,
5113 "sess %p lid %d|%d DS %d LS %d\n",
5114 sess, sess->loop_id, loop_id,
5115 sess->disc_state, sess->fw_login_state);
5116 }
5117
5118 res = 1; /* send notify ack */
5119 break;
5120 }
5121
5122 case ELS_FLOGI: /* should never happen */
5123 default:
5124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
5125 "qla_target(%d): Unsupported ELS command %x "
5126 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
5127 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5128 break;
5129 }
5130
5131 ql_dbg(ql_dbg_disc, vha, 0xf026,
5132 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5133 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5134
5135 return res;
5136 }
5137
5138 /*
5139 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5140 */
5141 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5142 struct imm_ntfy_from_isp *iocb)
5143 {
5144 struct qla_hw_data *ha = vha->hw;
5145 uint32_t add_flags = 0;
5146 int send_notify_ack = 1;
5147 uint16_t status;
5148
5149 lockdep_assert_held(&ha->hardware_lock);
5150
5151 status = le16_to_cpu(iocb->u.isp2x.status);
5152 switch (status) {
5153 case IMM_NTFY_LIP_RESET:
5154 {
5155 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5156 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5157 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5158 iocb->u.isp24.status_subcode);
5159
5160 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5161 send_notify_ack = 0;
5162 break;
5163 }
5164
5165 case IMM_NTFY_LIP_LINK_REINIT:
5166 {
5167 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5168
5169 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5170 "qla_target(%d): LINK REINIT (loop %#x, "
5171 "subcode %x)\n", vha->vp_idx,
5172 le16_to_cpu(iocb->u.isp24.nport_handle),
5173 iocb->u.isp24.status_subcode);
5174 if (tgt->link_reinit_iocb_pending) {
5175 qlt_send_notify_ack(ha->base_qpair,
5176 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5177 }
5178 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5179 tgt->link_reinit_iocb_pending = 1;
5180 /*
5181 * QLogic requires to wait after LINK REINIT for possible
5182 * PDISC or ADISC ELS commands
5183 */
5184 send_notify_ack = 0;
5185 break;
5186 }
5187
5188 case IMM_NTFY_PORT_LOGOUT:
5189 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5190 "qla_target(%d): Port logout (loop "
5191 "%#x, subcode %x)\n", vha->vp_idx,
5192 le16_to_cpu(iocb->u.isp24.nport_handle),
5193 iocb->u.isp24.status_subcode);
5194
5195 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5196 send_notify_ack = 0;
5197 /* The sessions will be cleared in the callback, if needed */
5198 break;
5199
5200 case IMM_NTFY_GLBL_TPRLO:
5201 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5202 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5203 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5204 send_notify_ack = 0;
5205 /* The sessions will be cleared in the callback, if needed */
5206 break;
5207
5208 case IMM_NTFY_PORT_CONFIG:
5209 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5210 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5211 status);
5212 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5213 send_notify_ack = 0;
5214 /* The sessions will be cleared in the callback, if needed */
5215 break;
5216
5217 case IMM_NTFY_GLBL_LOGO:
5218 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5219 "qla_target(%d): Link failure detected\n",
5220 vha->vp_idx);
5221 /* I_T nexus loss */
5222 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5223 send_notify_ack = 0;
5224 break;
5225
5226 case IMM_NTFY_IOCB_OVERFLOW:
5227 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5228 "qla_target(%d): Cannot provide requested "
5229 "capability (IOCB overflowed the immediate notify "
5230 "resource count)\n", vha->vp_idx);
5231 break;
5232
5233 case IMM_NTFY_ABORT_TASK:
5234 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5235 "qla_target(%d): Abort Task (S %08x I %#x -> "
5236 "L %#x)\n", vha->vp_idx,
5237 le16_to_cpu(iocb->u.isp2x.seq_id),
5238 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5239 le16_to_cpu(iocb->u.isp2x.lun));
5240 if (qlt_abort_task(vha, iocb) == 0)
5241 send_notify_ack = 0;
5242 break;
5243
5244 case IMM_NTFY_RESOURCE:
5245 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5246 "qla_target(%d): Out of resources, host %ld\n",
5247 vha->vp_idx, vha->host_no);
5248 break;
5249
5250 case IMM_NTFY_MSG_RX:
5251 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5252 "qla_target(%d): Immediate notify task %x\n",
5253 vha->vp_idx, iocb->u.isp2x.task_flags);
5254 break;
5255
5256 case IMM_NTFY_ELS:
5257 if (qlt_24xx_handle_els(vha, iocb) == 0)
5258 send_notify_ack = 0;
5259 break;
5260 default:
5261 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5262 "qla_target(%d): Received unknown immediate "
5263 "notify status %x\n", vha->vp_idx, status);
5264 break;
5265 }
5266
5267 if (send_notify_ack)
5268 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5269 0, 0);
5270 }
5271
5272 /*
5273 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5274 * This function sends busy to ISP 2xxx or 24xx.
5275 */
5276 static int __qlt_send_busy(struct qla_qpair *qpair,
5277 struct atio_from_isp *atio, uint16_t status)
5278 {
5279 struct scsi_qla_host *vha = qpair->vha;
5280 struct ctio7_to_24xx *ctio24;
5281 struct qla_hw_data *ha = vha->hw;
5282 request_t *pkt;
5283 struct fc_port *sess = NULL;
5284 unsigned long flags;
5285 u16 temp;
5286 port_id_t id;
5287
5288 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
5289
5290 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5291 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1);
5292 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5293 if (!sess) {
5294 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
5295 return 0;
5296 }
5297 /* Sending marker isn't necessary, since we called from ISR */
5298
5299 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
5300 if (!pkt) {
5301 ql_dbg(ql_dbg_io, vha, 0x3063,
5302 "qla_target(%d): %s failed: unable to allocate "
5303 "request packet", vha->vp_idx, __func__);
5304 return -ENOMEM;
5305 }
5306
5307 qpair->tgt_counters.num_q_full_sent++;
5308 pkt->entry_count = 1;
5309 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5310
5311 ctio24 = (struct ctio7_to_24xx *)pkt;
5312 ctio24->entry_type = CTIO_TYPE7;
5313 ctio24->nport_handle = sess->loop_id;
5314 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5315 ctio24->vp_index = vha->vp_idx;
5316 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
5317 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5318 temp = (atio->u.isp24.attr << 9) |
5319 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5320 CTIO7_FLAGS_DONT_RET_CTIO;
5321 ctio24->u.status1.flags = cpu_to_le16(temp);
5322 /*
5323 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5324 * if the explicit conformation is used.
5325 */
5326 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5327 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5328
5329 ctio24->u.status1.residual = get_datalen_for_atio(atio);
5330
5331 if (ctio24->u.status1.residual != 0)
5332 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
5333
5334 /* Memory Barrier */
5335 wmb();
5336 if (qpair->reqq_start_iocbs)
5337 qpair->reqq_start_iocbs(qpair);
5338 else
5339 qla2x00_start_iocbs(vha, qpair->req);
5340 return 0;
5341 }
5342
5343 /*
5344 * This routine is used to allocate a command for either a QFull condition
5345 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5346 * out previously.
5347 */
5348 static void
5349 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5350 struct atio_from_isp *atio, uint16_t status, int qfull)
5351 {
5352 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5353 struct qla_hw_data *ha = vha->hw;
5354 struct fc_port *sess;
5355 struct se_session *se_sess;
5356 struct qla_tgt_cmd *cmd;
5357 int tag, cpu;
5358 unsigned long flags;
5359
5360 if (unlikely(tgt->tgt_stop)) {
5361 ql_dbg(ql_dbg_io, vha, 0x300a,
5362 "New command while device %p is shutting down\n", tgt);
5363 return;
5364 }
5365
5366 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5367 vha->hw->tgt.num_qfull_cmds_dropped++;
5368 if (vha->hw->tgt.num_qfull_cmds_dropped >
5369 vha->qla_stats.stat_max_qfull_cmds_dropped)
5370 vha->qla_stats.stat_max_qfull_cmds_dropped =
5371 vha->hw->tgt.num_qfull_cmds_dropped;
5372
5373 ql_dbg(ql_dbg_io, vha, 0x3068,
5374 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5375 vha->vp_idx, __func__,
5376 vha->hw->tgt.num_qfull_cmds_dropped);
5377
5378 qlt_chk_exch_leak_thresh_hold(vha);
5379 return;
5380 }
5381
5382 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5383 (vha, atio->u.isp24.fcp_hdr.s_id);
5384 if (!sess)
5385 return;
5386
5387 se_sess = sess->se_sess;
5388
5389 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
5390 if (tag < 0) {
5391 ql_dbg(ql_dbg_io, vha, 0x3009,
5392 "qla_target(%d): %s: Allocation of cmd failed\n",
5393 vha->vp_idx, __func__);
5394
5395 vha->hw->tgt.num_qfull_cmds_dropped++;
5396 if (vha->hw->tgt.num_qfull_cmds_dropped >
5397 vha->qla_stats.stat_max_qfull_cmds_dropped)
5398 vha->qla_stats.stat_max_qfull_cmds_dropped =
5399 vha->hw->tgt.num_qfull_cmds_dropped;
5400
5401 qlt_chk_exch_leak_thresh_hold(vha);
5402 return;
5403 }
5404
5405 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5406 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5407
5408 qlt_incr_num_pend_cmds(vha);
5409 INIT_LIST_HEAD(&cmd->cmd_list);
5410 memcpy(&cmd->atio, atio, sizeof(*atio));
5411
5412 cmd->tgt = vha->vha_tgt.qla_tgt;
5413 cmd->vha = vha;
5414 cmd->reset_count = ha->base_qpair->chip_reset;
5415 cmd->q_full = 1;
5416 cmd->qpair = ha->base_qpair;
5417 cmd->se_cmd.map_cpu = cpu;
5418
5419 if (qfull) {
5420 cmd->q_full = 1;
5421 /* NOTE: borrowing the state field to carry the status */
5422 cmd->state = status;
5423 } else
5424 cmd->term_exchg = 1;
5425
5426 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5427 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5428
5429 vha->hw->tgt.num_qfull_cmds_alloc++;
5430 if (vha->hw->tgt.num_qfull_cmds_alloc >
5431 vha->qla_stats.stat_max_qfull_cmds_alloc)
5432 vha->qla_stats.stat_max_qfull_cmds_alloc =
5433 vha->hw->tgt.num_qfull_cmds_alloc;
5434 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5435 }
5436
5437 int
5438 qlt_free_qfull_cmds(struct qla_qpair *qpair)
5439 {
5440 struct scsi_qla_host *vha = qpair->vha;
5441 struct qla_hw_data *ha = vha->hw;
5442 unsigned long flags;
5443 struct qla_tgt_cmd *cmd, *tcmd;
5444 struct list_head free_list, q_full_list;
5445 int rc = 0;
5446
5447 if (list_empty(&ha->tgt.q_full_list))
5448 return 0;
5449
5450 INIT_LIST_HEAD(&free_list);
5451 INIT_LIST_HEAD(&q_full_list);
5452
5453 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5454 if (list_empty(&ha->tgt.q_full_list)) {
5455 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5456 return 0;
5457 }
5458
5459 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5460 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5461
5462 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5463 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
5464 if (cmd->q_full)
5465 /* cmd->state is a borrowed field to hold status */
5466 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
5467 else if (cmd->term_exchg)
5468 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
5469
5470 if (rc == -ENOMEM)
5471 break;
5472
5473 if (cmd->q_full)
5474 ql_dbg(ql_dbg_io, vha, 0x3006,
5475 "%s: busy sent for ox_id[%04x]\n", __func__,
5476 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5477 else if (cmd->term_exchg)
5478 ql_dbg(ql_dbg_io, vha, 0x3007,
5479 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5480 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5481 else
5482 ql_dbg(ql_dbg_io, vha, 0x3008,
5483 "%s: Unexpected cmd in QFull list %p\n", __func__,
5484 cmd);
5485
5486 list_del(&cmd->cmd_list);
5487 list_add_tail(&cmd->cmd_list, &free_list);
5488
5489 /* piggy back on hardware_lock for protection */
5490 vha->hw->tgt.num_qfull_cmds_alloc--;
5491 }
5492 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
5493
5494 cmd = NULL;
5495
5496 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5497 list_del(&cmd->cmd_list);
5498 /* This cmd was never sent to TCM. There is no need
5499 * to schedule free or call free_cmd
5500 */
5501 qlt_free_cmd(cmd);
5502 }
5503
5504 if (!list_empty(&q_full_list)) {
5505 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5506 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5507 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5508 }
5509
5510 return rc;
5511 }
5512
5513 static void
5514 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5515 uint16_t status)
5516 {
5517 int rc = 0;
5518 struct scsi_qla_host *vha = qpair->vha;
5519
5520 rc = __qlt_send_busy(qpair, atio, status);
5521 if (rc == -ENOMEM)
5522 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5523 }
5524
5525 static int
5526 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5527 struct atio_from_isp *atio, uint8_t ha_locked)
5528 {
5529 struct qla_hw_data *ha = vha->hw;
5530 unsigned long flags;
5531
5532 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5533 return 0;
5534
5535 if (!ha_locked)
5536 spin_lock_irqsave(&ha->hardware_lock, flags);
5537 qlt_send_busy(qpair, atio, qla_sam_status);
5538 if (!ha_locked)
5539 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5540
5541 return 1;
5542 }
5543
5544 /* ha->hardware_lock supposed to be held on entry */
5545 /* called via callback from qla2xxx */
5546 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5547 struct atio_from_isp *atio, uint8_t ha_locked)
5548 {
5549 struct qla_hw_data *ha = vha->hw;
5550 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5551 int rc;
5552 unsigned long flags = 0;
5553
5554 if (unlikely(tgt == NULL)) {
5555 ql_dbg(ql_dbg_tgt, vha, 0x3064,
5556 "ATIO pkt, but no tgt (ha %p)", ha);
5557 return;
5558 }
5559 /*
5560 * In tgt_stop mode we also should allow all requests to pass.
5561 * Otherwise, some commands can stuck.
5562 */
5563
5564 tgt->atio_irq_cmd_count++;
5565
5566 switch (atio->u.raw.entry_type) {
5567 case ATIO_TYPE7:
5568 if (unlikely(atio->u.isp24.exchange_addr ==
5569 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
5570 ql_dbg(ql_dbg_io, vha, 0x3065,
5571 "qla_target(%d): ATIO_TYPE7 "
5572 "received with UNKNOWN exchange address, "
5573 "sending QUEUE_FULL\n", vha->vp_idx);
5574 if (!ha_locked)
5575 spin_lock_irqsave(&ha->hardware_lock, flags);
5576 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
5577 if (!ha_locked)
5578 spin_unlock_irqrestore(&ha->hardware_lock,
5579 flags);
5580 break;
5581 }
5582
5583 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5584 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5585 atio, ha_locked);
5586 if (rc != 0) {
5587 tgt->atio_irq_cmd_count--;
5588 return;
5589 }
5590 rc = qlt_handle_cmd_for_atio(vha, atio);
5591 } else {
5592 rc = qlt_handle_task_mgmt(vha, atio);
5593 }
5594 if (unlikely(rc != 0)) {
5595 if (!ha_locked)
5596 spin_lock_irqsave(&ha->hardware_lock, flags);
5597 switch (rc) {
5598 case -ENODEV:
5599 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5600 "qla_target: Unable to send command to target\n");
5601 break;
5602 case -EBADF:
5603 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5604 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5605 qlt_send_term_exchange(ha->base_qpair, NULL,
5606 atio, 1, 0);
5607 break;
5608 case -EBUSY:
5609 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5610 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5611 vha->vp_idx);
5612 qlt_send_busy(ha->base_qpair, atio,
5613 tc_sam_status);
5614 break;
5615 default:
5616 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5617 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5618 vha->vp_idx);
5619 qlt_send_busy(ha->base_qpair, atio,
5620 qla_sam_status);
5621 break;
5622 }
5623 if (!ha_locked)
5624 spin_unlock_irqrestore(&ha->hardware_lock,
5625 flags);
5626 }
5627 break;
5628
5629 case IMMED_NOTIFY_TYPE:
5630 {
5631 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5632 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5633 "qla_target(%d): Received ATIO packet %x "
5634 "with error status %x\n", vha->vp_idx,
5635 atio->u.raw.entry_type,
5636 atio->u.isp2x.entry_status);
5637 break;
5638 }
5639 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5640
5641 if (!ha_locked)
5642 spin_lock_irqsave(&ha->hardware_lock, flags);
5643 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5644 if (!ha_locked)
5645 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5646 break;
5647 }
5648
5649 default:
5650 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5651 "qla_target(%d): Received unknown ATIO atio "
5652 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5653 break;
5654 }
5655
5656 tgt->atio_irq_cmd_count--;
5657 }
5658
5659 /*
5660 * qpair lock is assume to be held
5661 * rc = 0 : send terminate & abts respond
5662 * rc != 0: do not send term & abts respond
5663 */
5664 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha,
5665 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry)
5666 {
5667 struct qla_hw_data *ha = vha->hw;
5668 int rc = 0;
5669
5670 /*
5671 * Detect unresolved exchange. If the same ABTS is unable
5672 * to terminate an existing command and the same ABTS loops
5673 * between FW & Driver, then force FW dump. Under 1 jiff,
5674 * we should see multiple loops.
5675 */
5676 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort &&
5677 qpair->retry_term_jiff == jiffies) {
5678 /* found existing exchange */
5679 qpair->retry_term_cnt++;
5680 if (qpair->retry_term_cnt >= 5) {
5681 rc = EIO;
5682 qpair->retry_term_cnt = 0;
5683 ql_log(ql_log_warn, vha, 0xffff,
5684 "Unable to send ABTS Respond. Dumping firmware.\n");
5685 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer,
5686 vha, 0xffff, (uint8_t *)entry, sizeof(*entry));
5687
5688 if (qpair == ha->base_qpair)
5689 ha->isp_ops->fw_dump(vha, 1);
5690 else
5691 ha->isp_ops->fw_dump(vha, 0);
5692
5693 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5694 qla2xxx_wake_dpc(vha);
5695 }
5696 } else if (qpair->retry_term_jiff != jiffies) {
5697 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort;
5698 qpair->retry_term_cnt = 0;
5699 qpair->retry_term_jiff = jiffies;
5700 }
5701
5702 return rc;
5703 }
5704
5705
5706 static void qlt_handle_abts_completion(struct scsi_qla_host *vha,
5707 struct rsp_que *rsp, response_t *pkt)
5708 {
5709 struct abts_resp_from_24xx_fw *entry =
5710 (struct abts_resp_from_24xx_fw *)pkt;
5711 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK;
5712 struct qla_tgt_mgmt_cmd *mcmd;
5713 struct qla_hw_data *ha = vha->hw;
5714
5715 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt);
5716 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) {
5717 ql_dbg(ql_dbg_async, vha, 0xe064,
5718 "qla_target(%d): ABTS Comp without mcmd\n",
5719 vha->vp_idx);
5720 return;
5721 }
5722
5723 if (mcmd)
5724 vha = mcmd->vha;
5725 vha->vha_tgt.qla_tgt->abts_resp_expected--;
5726
5727 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5728 "ABTS_RESP_24XX: compl_status %x\n",
5729 entry->compl_status);
5730
5731 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) {
5732 if ((entry->error_subcode1 == 0x1E) &&
5733 (entry->error_subcode2 == 0)) {
5734 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) {
5735 ha->tgt.tgt_ops->free_mcmd(mcmd);
5736 return;
5737 }
5738 qlt_24xx_retry_term_exchange(vha, rsp->qpair,
5739 pkt, mcmd);
5740 } else {
5741 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5742 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)",
5743 vha->vp_idx, entry->compl_status,
5744 entry->error_subcode1,
5745 entry->error_subcode2);
5746 ha->tgt.tgt_ops->free_mcmd(mcmd);
5747 }
5748 } else if (mcmd) {
5749 ha->tgt.tgt_ops->free_mcmd(mcmd);
5750 }
5751 }
5752
5753 /* ha->hardware_lock supposed to be held on entry */
5754 /* called via callback from qla2xxx */
5755 static void qlt_response_pkt(struct scsi_qla_host *vha,
5756 struct rsp_que *rsp, response_t *pkt)
5757 {
5758 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5759
5760 if (unlikely(tgt == NULL)) {
5761 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5762 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5763 vha->vp_idx, pkt->entry_type, vha->hw);
5764 return;
5765 }
5766
5767 /*
5768 * In tgt_stop mode we also should allow all requests to pass.
5769 * Otherwise, some commands can stuck.
5770 */
5771
5772 switch (pkt->entry_type) {
5773 case CTIO_CRC2:
5774 case CTIO_TYPE7:
5775 {
5776 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5777
5778 qlt_do_ctio_completion(vha, rsp, entry->handle,
5779 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5780 entry);
5781 break;
5782 }
5783
5784 case ACCEPT_TGT_IO_TYPE:
5785 {
5786 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5787 int rc;
5788
5789 if (atio->u.isp2x.status !=
5790 cpu_to_le16(ATIO_CDB_VALID)) {
5791 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5792 "qla_target(%d): ATIO with error "
5793 "status %x received\n", vha->vp_idx,
5794 le16_to_cpu(atio->u.isp2x.status));
5795 break;
5796 }
5797
5798 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
5799 if (rc != 0)
5800 return;
5801
5802 rc = qlt_handle_cmd_for_atio(vha, atio);
5803 if (unlikely(rc != 0)) {
5804 switch (rc) {
5805 case -ENODEV:
5806 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5807 "qla_target: Unable to send command to target\n");
5808 break;
5809 case -EBADF:
5810 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5811 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5812 qlt_send_term_exchange(rsp->qpair, NULL,
5813 atio, 1, 0);
5814 break;
5815 case -EBUSY:
5816 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5817 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5818 vha->vp_idx);
5819 qlt_send_busy(rsp->qpair, atio,
5820 tc_sam_status);
5821 break;
5822 default:
5823 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5824 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5825 vha->vp_idx);
5826 qlt_send_busy(rsp->qpair, atio,
5827 qla_sam_status);
5828 break;
5829 }
5830 }
5831 }
5832 break;
5833
5834 case CONTINUE_TGT_IO_TYPE:
5835 {
5836 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5837
5838 qlt_do_ctio_completion(vha, rsp, entry->handle,
5839 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5840 entry);
5841 break;
5842 }
5843
5844 case CTIO_A64_TYPE:
5845 {
5846 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5847
5848 qlt_do_ctio_completion(vha, rsp, entry->handle,
5849 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5850 entry);
5851 break;
5852 }
5853
5854 case IMMED_NOTIFY_TYPE:
5855 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5856 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5857 break;
5858
5859 case NOTIFY_ACK_TYPE:
5860 if (tgt->notify_ack_expected > 0) {
5861 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5862
5863 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5864 "NOTIFY_ACK seq %08x status %x\n",
5865 le16_to_cpu(entry->u.isp2x.seq_id),
5866 le16_to_cpu(entry->u.isp2x.status));
5867 tgt->notify_ack_expected--;
5868 if (entry->u.isp2x.status !=
5869 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5870 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5871 "qla_target(%d): NOTIFY_ACK "
5872 "failed %x\n", vha->vp_idx,
5873 le16_to_cpu(entry->u.isp2x.status));
5874 }
5875 } else {
5876 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5877 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5878 vha->vp_idx);
5879 }
5880 break;
5881
5882 case ABTS_RECV_24XX:
5883 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5884 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5885 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5886 break;
5887
5888 case ABTS_RESP_24XX:
5889 if (tgt->abts_resp_expected > 0) {
5890 qlt_handle_abts_completion(vha, rsp, pkt);
5891 } else {
5892 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5893 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5894 "received\n", vha->vp_idx);
5895 }
5896 break;
5897
5898 default:
5899 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5900 "qla_target(%d): Received unknown response pkt "
5901 "type %x\n", vha->vp_idx, pkt->entry_type);
5902 break;
5903 }
5904
5905 }
5906
5907 /*
5908 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5909 */
5910 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5911 uint16_t *mailbox)
5912 {
5913 struct qla_hw_data *ha = vha->hw;
5914 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5915 int login_code;
5916
5917 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
5918 return;
5919
5920 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5921 IS_QLA2100(ha))
5922 return;
5923 /*
5924 * In tgt_stop mode we also should allow all requests to pass.
5925 * Otherwise, some commands can stuck.
5926 */
5927
5928
5929 switch (code) {
5930 case MBA_RESET: /* Reset */
5931 case MBA_SYSTEM_ERR: /* System Error */
5932 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5933 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5935 "qla_target(%d): System error async event %#x "
5936 "occurred", vha->vp_idx, code);
5937 break;
5938 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5939 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5940 break;
5941
5942 case MBA_LOOP_UP:
5943 {
5944 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
5945 "qla_target(%d): Async LOOP_UP occurred "
5946 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5947 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5948 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5949 if (tgt->link_reinit_iocb_pending) {
5950 qlt_send_notify_ack(ha->base_qpair,
5951 (void *)&tgt->link_reinit_iocb,
5952 0, 0, 0, 0, 0, 0);
5953 tgt->link_reinit_iocb_pending = 0;
5954 }
5955 break;
5956 }
5957
5958 case MBA_LIP_OCCURRED:
5959 case MBA_LOOP_DOWN:
5960 case MBA_LIP_RESET:
5961 case MBA_RSCN_UPDATE:
5962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
5963 "qla_target(%d): Async event %#x occurred "
5964 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5965 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5966 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5967 break;
5968
5969 case MBA_REJECTED_FCP_CMD:
5970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5971 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5972 vha->vp_idx,
5973 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5974 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5975
5976 if (le16_to_cpu(mailbox[3]) == 1) {
5977 /* exchange starvation. */
5978 vha->hw->exch_starvation++;
5979 if (vha->hw->exch_starvation > 5) {
5980 ql_log(ql_log_warn, vha, 0xd03a,
5981 "Exchange starvation-. Resetting RISC\n");
5982
5983 vha->hw->exch_starvation = 0;
5984 if (IS_P3P_TYPE(vha->hw))
5985 set_bit(FCOE_CTX_RESET_NEEDED,
5986 &vha->dpc_flags);
5987 else
5988 set_bit(ISP_ABORT_NEEDED,
5989 &vha->dpc_flags);
5990 qla2xxx_wake_dpc(vha);
5991 }
5992 }
5993 break;
5994
5995 case MBA_PORT_UPDATE:
5996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5997 "qla_target(%d): Port update async event %#x "
5998 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
5999 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
6000 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
6001 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
6002
6003 login_code = le16_to_cpu(mailbox[2]);
6004 if (login_code == 0x4) {
6005 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
6006 "Async MB 2: Got PLOGI Complete\n");
6007 vha->hw->exch_starvation = 0;
6008 } else if (login_code == 0x7)
6009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
6010 "Async MB 2: Port Logged Out\n");
6011 break;
6012 default:
6013 break;
6014 }
6015
6016 }
6017
6018 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
6019 uint16_t loop_id)
6020 {
6021 fc_port_t *fcport, *tfcp, *del;
6022 int rc;
6023 unsigned long flags;
6024 u8 newfcport = 0;
6025
6026 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
6027 if (!fcport) {
6028 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
6029 "qla_target(%d): Allocation of tmp FC port failed",
6030 vha->vp_idx);
6031 return NULL;
6032 }
6033
6034 fcport->loop_id = loop_id;
6035
6036 rc = qla24xx_gpdb_wait(vha, fcport, 0);
6037 if (rc != QLA_SUCCESS) {
6038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
6039 "qla_target(%d): Failed to retrieve fcport "
6040 "information -- get_port_database() returned %x "
6041 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
6042 kfree(fcport);
6043 return NULL;
6044 }
6045
6046 del = NULL;
6047 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
6048 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
6049
6050 if (tfcp) {
6051 tfcp->d_id = fcport->d_id;
6052 tfcp->port_type = fcport->port_type;
6053 tfcp->supported_classes = fcport->supported_classes;
6054 tfcp->flags |= fcport->flags;
6055 tfcp->scan_state = QLA_FCPORT_FOUND;
6056
6057 del = fcport;
6058 fcport = tfcp;
6059 } else {
6060 if (vha->hw->current_topology == ISP_CFG_F)
6061 fcport->flags |= FCF_FABRIC_DEVICE;
6062
6063 list_add_tail(&fcport->list, &vha->vp_fcports);
6064 if (!IS_SW_RESV_ADDR(fcport->d_id))
6065 vha->fcport_count++;
6066 fcport->login_gen++;
6067 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE);
6068 fcport->login_succ = 1;
6069 newfcport = 1;
6070 }
6071
6072 fcport->deleted = 0;
6073 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
6074
6075 switch (vha->host->active_mode) {
6076 case MODE_INITIATOR:
6077 case MODE_DUAL:
6078 if (newfcport) {
6079 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
6080 qla24xx_sched_upd_fcport(fcport);
6081 } else {
6082 ql_dbg(ql_dbg_disc, vha, 0x20ff,
6083 "%s %d %8phC post gpsc fcp_cnt %d\n",
6084 __func__, __LINE__, fcport->port_name, vha->fcport_count);
6085 qla24xx_post_gpsc_work(vha, fcport);
6086 }
6087 }
6088 break;
6089
6090 case MODE_TARGET:
6091 default:
6092 break;
6093 }
6094 if (del)
6095 qla2x00_free_fcport(del);
6096
6097 return fcport;
6098 }
6099
6100 /* Must be called under tgt_mutex */
6101 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
6102 be_id_t s_id)
6103 {
6104 struct fc_port *sess = NULL;
6105 fc_port_t *fcport = NULL;
6106 int rc, global_resets;
6107 uint16_t loop_id = 0;
6108
6109 if (s_id.domain == 0xFF && s_id.area == 0xFC) {
6110 /*
6111 * This is Domain Controller, so it should be
6112 * OK to drop SCSI commands from it.
6113 */
6114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
6115 "Unable to find initiator with S_ID %x:%x:%x",
6116 s_id.domain, s_id.area, s_id.al_pa);
6117 return NULL;
6118 }
6119
6120 mutex_lock(&vha->vha_tgt.tgt_mutex);
6121
6122 retry:
6123 global_resets =
6124 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
6125
6126 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
6127 if (rc != 0) {
6128 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6129
6130 ql_log(ql_log_info, vha, 0xf071,
6131 "qla_target(%d): Unable to find "
6132 "initiator with S_ID %x:%x:%x",
6133 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa);
6134
6135 if (rc == -ENOENT) {
6136 qlt_port_logo_t logo;
6137
6138 logo.id = be_to_port_id(s_id);
6139 logo.cmd_count = 1;
6140 qlt_send_first_logo(vha, &logo);
6141 }
6142
6143 return NULL;
6144 }
6145
6146 fcport = qlt_get_port_database(vha, loop_id);
6147 if (!fcport) {
6148 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6149 return NULL;
6150 }
6151
6152 if (global_resets !=
6153 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
6154 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
6155 "qla_target(%d): global reset during session discovery "
6156 "(counter was %d, new %d), retrying", vha->vp_idx,
6157 global_resets,
6158 atomic_read(&vha->vha_tgt.
6159 qla_tgt->tgt_global_resets_count));
6160 goto retry;
6161 }
6162
6163 sess = qlt_create_sess(vha, fcport, true);
6164
6165 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6166
6167 return sess;
6168 }
6169
6170 static void qlt_abort_work(struct qla_tgt *tgt,
6171 struct qla_tgt_sess_work_param *prm)
6172 {
6173 struct scsi_qla_host *vha = tgt->vha;
6174 struct qla_hw_data *ha = vha->hw;
6175 struct fc_port *sess = NULL;
6176 unsigned long flags = 0, flags2 = 0;
6177 be_id_t s_id;
6178 int rc;
6179
6180 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6181
6182 if (tgt->tgt_stop)
6183 goto out_term2;
6184
6185 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id);
6186
6187 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6188 if (!sess) {
6189 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6190
6191 sess = qlt_make_local_sess(vha, s_id);
6192 /* sess has got an extra creation ref */
6193
6194 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6195 if (!sess)
6196 goto out_term2;
6197 } else {
6198 if (sess->deleted) {
6199 sess = NULL;
6200 goto out_term2;
6201 }
6202
6203 if (!kref_get_unless_zero(&sess->sess_kref)) {
6204 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
6205 "%s: kref_get fail %8phC \n",
6206 __func__, sess->port_name);
6207 sess = NULL;
6208 goto out_term2;
6209 }
6210 }
6211
6212 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
6213 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6214
6215 ha->tgt.tgt_ops->put_sess(sess);
6216
6217 if (rc != 0)
6218 goto out_term;
6219 return;
6220
6221 out_term2:
6222 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6223
6224 out_term:
6225 spin_lock_irqsave(&ha->hardware_lock, flags);
6226 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6227 FCP_TMF_REJECTED, false);
6228 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6229 }
6230
6231 static void qlt_tmr_work(struct qla_tgt *tgt,
6232 struct qla_tgt_sess_work_param *prm)
6233 {
6234 struct atio_from_isp *a = &prm->tm_iocb2;
6235 struct scsi_qla_host *vha = tgt->vha;
6236 struct qla_hw_data *ha = vha->hw;
6237 struct fc_port *sess;
6238 unsigned long flags;
6239 be_id_t s_id;
6240 int rc;
6241 u64 unpacked_lun;
6242 int fn;
6243 void *iocb;
6244
6245 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6246
6247 if (tgt->tgt_stop)
6248 goto out_term2;
6249
6250 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6251 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6252 if (!sess) {
6253 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6254
6255 sess = qlt_make_local_sess(vha, s_id);
6256 /* sess has got an extra creation ref */
6257
6258 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6259 if (!sess)
6260 goto out_term2;
6261 } else {
6262 if (sess->deleted) {
6263 goto out_term2;
6264 }
6265
6266 if (!kref_get_unless_zero(&sess->sess_kref)) {
6267 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
6268 "%s: kref_get fail %8phC\n",
6269 __func__, sess->port_name);
6270 goto out_term2;
6271 }
6272 }
6273
6274 iocb = a;
6275 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
6276 unpacked_lun =
6277 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
6278
6279 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
6280 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6281
6282 ha->tgt.tgt_ops->put_sess(sess);
6283
6284 if (rc != 0)
6285 goto out_term;
6286 return;
6287
6288 out_term2:
6289 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6290 out_term:
6291 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
6292 }
6293
6294 static void qlt_sess_work_fn(struct work_struct *work)
6295 {
6296 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6297 struct scsi_qla_host *vha = tgt->vha;
6298 unsigned long flags;
6299
6300 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6301
6302 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6303 while (!list_empty(&tgt->sess_works_list)) {
6304 struct qla_tgt_sess_work_param *prm = list_entry(
6305 tgt->sess_works_list.next, typeof(*prm),
6306 sess_works_list_entry);
6307
6308 /*
6309 * This work can be scheduled on several CPUs at time, so we
6310 * must delete the entry to eliminate double processing
6311 */
6312 list_del(&prm->sess_works_list_entry);
6313
6314 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6315
6316 switch (prm->type) {
6317 case QLA_TGT_SESS_WORK_ABORT:
6318 qlt_abort_work(tgt, prm);
6319 break;
6320 case QLA_TGT_SESS_WORK_TM:
6321 qlt_tmr_work(tgt, prm);
6322 break;
6323 default:
6324 BUG_ON(1);
6325 break;
6326 }
6327
6328 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6329
6330 kfree(prm);
6331 }
6332 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6333 }
6334
6335 /* Must be called under tgt_host_action_mutex */
6336 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6337 {
6338 struct qla_tgt *tgt;
6339 int rc, i;
6340 struct qla_qpair_hint *h;
6341
6342 if (!QLA_TGT_MODE_ENABLED())
6343 return 0;
6344
6345 if (!IS_TGT_MODE_CAPABLE(ha)) {
6346 ql_log(ql_log_warn, base_vha, 0xe070,
6347 "This adapter does not support target mode.\n");
6348 return 0;
6349 }
6350
6351 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
6352 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
6353
6354 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
6355
6356 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6357 if (!tgt) {
6358 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6359 "Unable to allocate struct qla_tgt\n");
6360 return -ENOMEM;
6361 }
6362
6363 tgt->qphints = kcalloc(ha->max_qpairs + 1,
6364 sizeof(struct qla_qpair_hint),
6365 GFP_KERNEL);
6366 if (!tgt->qphints) {
6367 kfree(tgt);
6368 ql_log(ql_log_warn, base_vha, 0x0197,
6369 "Unable to allocate qpair hints.\n");
6370 return -ENOMEM;
6371 }
6372
6373 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6374 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6375
6376 rc = btree_init64(&tgt->lun_qpair_map);
6377 if (rc) {
6378 kfree(tgt->qphints);
6379 kfree(tgt);
6380 ql_log(ql_log_info, base_vha, 0x0198,
6381 "Unable to initialize lun_qpair_map btree\n");
6382 return -EIO;
6383 }
6384 h = &tgt->qphints[0];
6385 h->qpair = ha->base_qpair;
6386 INIT_LIST_HEAD(&h->hint_elem);
6387 h->cpuid = ha->base_qpair->cpuid;
6388 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6389
6390 for (i = 0; i < ha->max_qpairs; i++) {
6391 unsigned long flags;
6392
6393 struct qla_qpair *qpair = ha->queue_pair_map[i];
6394
6395 h = &tgt->qphints[i + 1];
6396 INIT_LIST_HEAD(&h->hint_elem);
6397 if (qpair) {
6398 h->qpair = qpair;
6399 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6400 list_add_tail(&h->hint_elem, &qpair->hints_list);
6401 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6402 h->cpuid = qpair->cpuid;
6403 }
6404 }
6405
6406 tgt->ha = ha;
6407 tgt->vha = base_vha;
6408 init_waitqueue_head(&tgt->waitQ);
6409 INIT_LIST_HEAD(&tgt->del_sess_list);
6410 spin_lock_init(&tgt->sess_work_lock);
6411 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6412 INIT_LIST_HEAD(&tgt->sess_works_list);
6413 atomic_set(&tgt->tgt_global_resets_count, 0);
6414
6415 base_vha->vha_tgt.qla_tgt = tgt;
6416
6417 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6418 "qla_target(%d): using 64 Bit PCI addressing",
6419 base_vha->vp_idx);
6420 /* 3 is reserved */
6421 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6422
6423 mutex_lock(&qla_tgt_mutex);
6424 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6425 mutex_unlock(&qla_tgt_mutex);
6426
6427 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6428 ha->tgt.tgt_ops->add_target(base_vha);
6429
6430 return 0;
6431 }
6432
6433 /* Must be called under tgt_host_action_mutex */
6434 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6435 {
6436 if (!vha->vha_tgt.qla_tgt)
6437 return 0;
6438
6439 if (vha->fc_vport) {
6440 qlt_release(vha->vha_tgt.qla_tgt);
6441 return 0;
6442 }
6443
6444 /* free left over qfull cmds */
6445 qlt_init_term_exchange(vha);
6446
6447 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6448 vha->host_no, ha);
6449 qlt_release(vha->vha_tgt.qla_tgt);
6450
6451 return 0;
6452 }
6453
6454 void qlt_remove_target_resources(struct qla_hw_data *ha)
6455 {
6456 struct scsi_qla_host *node;
6457 u32 key = 0;
6458
6459 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6460 btree_remove32(&ha->tgt.host_map, key);
6461
6462 btree_destroy32(&ha->tgt.host_map);
6463 }
6464
6465 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6466 unsigned char *b)
6467 {
6468 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name);
6469 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name);
6470 put_unaligned_be64(wwpn, b);
6471 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b);
6472 }
6473
6474 /**
6475 * qla_tgt_lport_register - register lport with external module
6476 *
6477 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6478 * @phys_wwpn: physical port WWPN
6479 * @npiv_wwpn: NPIV WWPN
6480 * @npiv_wwnn: NPIV WWNN
6481 * @callback: lport initialization callback for tcm_qla2xxx code
6482 */
6483 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6484 u64 npiv_wwpn, u64 npiv_wwnn,
6485 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6486 {
6487 struct qla_tgt *tgt;
6488 struct scsi_qla_host *vha;
6489 struct qla_hw_data *ha;
6490 struct Scsi_Host *host;
6491 unsigned long flags;
6492 int rc;
6493 u8 b[WWN_SIZE];
6494
6495 mutex_lock(&qla_tgt_mutex);
6496 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6497 vha = tgt->vha;
6498 ha = vha->hw;
6499
6500 host = vha->host;
6501 if (!host)
6502 continue;
6503
6504 if (!(host->hostt->supported_mode & MODE_TARGET))
6505 continue;
6506
6507 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6508 continue;
6509
6510 spin_lock_irqsave(&ha->hardware_lock, flags);
6511 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6512 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6513 host->host_no);
6514 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6515 continue;
6516 }
6517 if (tgt->tgt_stop) {
6518 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6519 host->host_no);
6520 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6521 continue;
6522 }
6523 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6524
6525 if (!scsi_host_get(host)) {
6526 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6527 "Unable to scsi_host_get() for"
6528 " qla2xxx scsi_host\n");
6529 continue;
6530 }
6531 qlt_lport_dump(vha, phys_wwpn, b);
6532
6533 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6534 scsi_host_put(host);
6535 continue;
6536 }
6537 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6538 if (rc != 0)
6539 scsi_host_put(host);
6540
6541 mutex_unlock(&qla_tgt_mutex);
6542 return rc;
6543 }
6544 mutex_unlock(&qla_tgt_mutex);
6545
6546 return -ENODEV;
6547 }
6548 EXPORT_SYMBOL(qlt_lport_register);
6549
6550 /**
6551 * qla_tgt_lport_deregister - Degister lport
6552 *
6553 * @vha: Registered scsi_qla_host pointer
6554 */
6555 void qlt_lport_deregister(struct scsi_qla_host *vha)
6556 {
6557 struct qla_hw_data *ha = vha->hw;
6558 struct Scsi_Host *sh = vha->host;
6559 /*
6560 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6561 */
6562 vha->vha_tgt.target_lport_ptr = NULL;
6563 ha->tgt.tgt_ops = NULL;
6564 /*
6565 * Release the Scsi_Host reference for the underlying qla2xxx host
6566 */
6567 scsi_host_put(sh);
6568 }
6569 EXPORT_SYMBOL(qlt_lport_deregister);
6570
6571 /* Must be called under HW lock */
6572 void qlt_set_mode(struct scsi_qla_host *vha)
6573 {
6574 switch (vha->qlini_mode) {
6575 case QLA2XXX_INI_MODE_DISABLED:
6576 case QLA2XXX_INI_MODE_EXCLUSIVE:
6577 vha->host->active_mode = MODE_TARGET;
6578 break;
6579 case QLA2XXX_INI_MODE_ENABLED:
6580 vha->host->active_mode = MODE_INITIATOR;
6581 break;
6582 case QLA2XXX_INI_MODE_DUAL:
6583 vha->host->active_mode = MODE_DUAL;
6584 break;
6585 default:
6586 break;
6587 }
6588 }
6589
6590 /* Must be called under HW lock */
6591 static void qlt_clear_mode(struct scsi_qla_host *vha)
6592 {
6593 switch (vha->qlini_mode) {
6594 case QLA2XXX_INI_MODE_DISABLED:
6595 vha->host->active_mode = MODE_UNKNOWN;
6596 break;
6597 case QLA2XXX_INI_MODE_EXCLUSIVE:
6598 vha->host->active_mode = MODE_INITIATOR;
6599 break;
6600 case QLA2XXX_INI_MODE_ENABLED:
6601 case QLA2XXX_INI_MODE_DUAL:
6602 vha->host->active_mode = MODE_INITIATOR;
6603 break;
6604 default:
6605 break;
6606 }
6607 }
6608
6609 /*
6610 * qla_tgt_enable_vha - NO LOCK HELD
6611 *
6612 * host_reset, bring up w/ Target Mode Enabled
6613 */
6614 void
6615 qlt_enable_vha(struct scsi_qla_host *vha)
6616 {
6617 struct qla_hw_data *ha = vha->hw;
6618 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6619 unsigned long flags;
6620 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6621
6622 if (!tgt) {
6623 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6624 "Unable to locate qla_tgt pointer from"
6625 " struct qla_hw_data\n");
6626 dump_stack();
6627 return;
6628 }
6629 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6630 return;
6631
6632 if (ha->tgt.num_act_qpairs > ha->max_qpairs)
6633 ha->tgt.num_act_qpairs = ha->max_qpairs;
6634 spin_lock_irqsave(&ha->hardware_lock, flags);
6635 tgt->tgt_stopped = 0;
6636 qlt_set_mode(vha);
6637 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6638
6639 mutex_lock(&ha->optrom_mutex);
6640 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
6641 "%s.\n", __func__);
6642 if (vha->vp_idx) {
6643 qla24xx_disable_vp(vha);
6644 qla24xx_enable_vp(vha);
6645 } else {
6646 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6647 qla2xxx_wake_dpc(base_vha);
6648 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) !=
6649 QLA_SUCCESS);
6650 }
6651 mutex_unlock(&ha->optrom_mutex);
6652 }
6653 EXPORT_SYMBOL(qlt_enable_vha);
6654
6655 /*
6656 * qla_tgt_disable_vha - NO LOCK HELD
6657 *
6658 * Disable Target Mode and reset the adapter
6659 */
6660 static void qlt_disable_vha(struct scsi_qla_host *vha)
6661 {
6662 struct qla_hw_data *ha = vha->hw;
6663 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6664 unsigned long flags;
6665
6666 if (!tgt) {
6667 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6668 "Unable to locate qla_tgt pointer from"
6669 " struct qla_hw_data\n");
6670 dump_stack();
6671 return;
6672 }
6673
6674 spin_lock_irqsave(&ha->hardware_lock, flags);
6675 qlt_clear_mode(vha);
6676 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6677
6678 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6679 qla2xxx_wake_dpc(vha);
6680 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
6681 ql_dbg(ql_dbg_tgt, vha, 0xe081,
6682 "qla2x00_wait_for_hba_online() failed\n");
6683 }
6684
6685 /*
6686 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6687 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6688 * members.
6689 */
6690 void
6691 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6692 {
6693 vha->vha_tgt.qla_tgt = NULL;
6694
6695 mutex_init(&vha->vha_tgt.tgt_mutex);
6696 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6697
6698 qlt_clear_mode(vha);
6699
6700 /*
6701 * NOTE: Currently the value is kept the same for <24xx and
6702 * >=24xx ISPs. If it is necessary to change it,
6703 * the check should be added for specific ISPs,
6704 * assigning the value appropriately.
6705 */
6706 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6707
6708 qlt_add_target(ha, vha);
6709 }
6710
6711 u8
6712 qlt_rff_id(struct scsi_qla_host *vha)
6713 {
6714 u8 fc4_feature = 0;
6715 /*
6716 * FC-4 Feature bit 0 indicates target functionality to the name server.
6717 */
6718 if (qla_tgt_mode_enabled(vha)) {
6719 fc4_feature = BIT_0;
6720 } else if (qla_ini_mode_enabled(vha)) {
6721 fc4_feature = BIT_1;
6722 } else if (qla_dual_mode_enabled(vha))
6723 fc4_feature = BIT_0 | BIT_1;
6724
6725 return fc4_feature;
6726 }
6727
6728 /*
6729 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6730 * @ha: HA context
6731 *
6732 * Beginning of ATIO ring has initialization control block already built
6733 * by nvram config routine.
6734 *
6735 * Returns 0 on success.
6736 */
6737 void
6738 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6739 {
6740 struct qla_hw_data *ha = vha->hw;
6741 uint16_t cnt;
6742 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6743
6744 if (qla_ini_mode_enabled(vha))
6745 return;
6746
6747 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6748 pkt->u.raw.signature = ATIO_PROCESSED;
6749 pkt++;
6750 }
6751
6752 }
6753
6754 /*
6755 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6756 * @ha: SCSI driver HA context
6757 */
6758 void
6759 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6760 {
6761 struct qla_hw_data *ha = vha->hw;
6762 struct atio_from_isp *pkt;
6763 int cnt, i;
6764
6765 if (!ha->flags.fw_started)
6766 return;
6767
6768 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6769 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
6770 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6771 cnt = pkt->u.raw.entry_count;
6772
6773 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6774 /*
6775 * This packet is corrupted. The header + payload
6776 * can not be trusted. There is no point in passing
6777 * it further up.
6778 */
6779 ql_log(ql_log_warn, vha, 0xd03c,
6780 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6781 &pkt->u.isp24.fcp_hdr.s_id,
6782 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6783 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6784
6785 adjust_corrupted_atio(pkt);
6786 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6787 ha_locked, 0);
6788 } else {
6789 qlt_24xx_atio_pkt_all_vps(vha,
6790 (struct atio_from_isp *)pkt, ha_locked);
6791 }
6792
6793 for (i = 0; i < cnt; i++) {
6794 ha->tgt.atio_ring_index++;
6795 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6796 ha->tgt.atio_ring_index = 0;
6797 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6798 } else
6799 ha->tgt.atio_ring_ptr++;
6800
6801 pkt->u.raw.signature = ATIO_PROCESSED;
6802 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6803 }
6804 wmb();
6805 }
6806
6807 /* Adjust ring index */
6808 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6809 }
6810
6811 void
6812 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6813 {
6814 struct qla_hw_data *ha = vha->hw;
6815 struct qla_msix_entry *msix = &ha->msix_entries[2];
6816 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6817
6818 if (!QLA_TGT_MODE_ENABLED())
6819 return;
6820
6821 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6822 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6823 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6824
6825 if (ha->flags.msix_enabled) {
6826 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
6827 if (IS_QLA2071(ha)) {
6828 /* 4 ports Baker: Enable Interrupt Handshake */
6829 icb->msix_atio = 0;
6830 icb->firmware_options_2 |= BIT_26;
6831 } else {
6832 icb->msix_atio = cpu_to_le16(msix->entry);
6833 icb->firmware_options_2 &= ~BIT_26;
6834 }
6835 ql_dbg(ql_dbg_init, vha, 0xf072,
6836 "Registering ICB vector 0x%x for atio que.\n",
6837 msix->entry);
6838 }
6839 } else {
6840 /* INTx|MSI */
6841 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
6842 icb->msix_atio = 0;
6843 icb->firmware_options_2 |= BIT_26;
6844 ql_dbg(ql_dbg_init, vha, 0xf072,
6845 "%s: Use INTx for ATIOQ.\n", __func__);
6846 }
6847 }
6848 }
6849
6850 void
6851 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6852 {
6853 struct qla_hw_data *ha = vha->hw;
6854 u32 tmp;
6855
6856 if (!QLA_TGT_MODE_ENABLED())
6857 return;
6858
6859 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6860 if (!ha->tgt.saved_set) {
6861 /* We save only once */
6862 ha->tgt.saved_exchange_count = nv->exchange_count;
6863 ha->tgt.saved_firmware_options_1 =
6864 nv->firmware_options_1;
6865 ha->tgt.saved_firmware_options_2 =
6866 nv->firmware_options_2;
6867 ha->tgt.saved_firmware_options_3 =
6868 nv->firmware_options_3;
6869 ha->tgt.saved_set = 1;
6870 }
6871
6872 if (qla_tgt_mode_enabled(vha))
6873 nv->exchange_count = cpu_to_le16(0xFFFF);
6874 else /* dual */
6875 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
6876
6877 /* Enable target mode */
6878 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6879
6880 /* Disable ini mode, if requested */
6881 if (qla_tgt_mode_enabled(vha))
6882 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6883
6884 /* Disable Full Login after LIP */
6885 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6886 /* Enable initial LIP */
6887 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6888 if (ql2xtgt_tape_enable)
6889 /* Enable FC Tape support */
6890 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6891 else
6892 /* Disable FC Tape support */
6893 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6894
6895 /* Disable Full Login after LIP */
6896 nv->host_p &= cpu_to_le32(~BIT_10);
6897
6898 /*
6899 * clear BIT 15 explicitly as we have seen at least
6900 * a couple of instances where this was set and this
6901 * was causing the firmware to not be initialized.
6902 */
6903 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6904 /* Enable target PRLI control */
6905 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6906
6907 if (IS_QLA25XX(ha)) {
6908 /* Change Loop-prefer to Pt-Pt */
6909 tmp = ~(BIT_4|BIT_5|BIT_6);
6910 nv->firmware_options_2 &= cpu_to_le32(tmp);
6911 tmp = P2P << 4;
6912 nv->firmware_options_2 |= cpu_to_le32(tmp);
6913 }
6914 } else {
6915 if (ha->tgt.saved_set) {
6916 nv->exchange_count = ha->tgt.saved_exchange_count;
6917 nv->firmware_options_1 =
6918 ha->tgt.saved_firmware_options_1;
6919 nv->firmware_options_2 =
6920 ha->tgt.saved_firmware_options_2;
6921 nv->firmware_options_3 =
6922 ha->tgt.saved_firmware_options_3;
6923 }
6924 return;
6925 }
6926
6927 if (ha->base_qpair->enable_class_2) {
6928 if (vha->flags.init_done)
6929 fc_host_supported_classes(vha->host) =
6930 FC_COS_CLASS2 | FC_COS_CLASS3;
6931
6932 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6933 } else {
6934 if (vha->flags.init_done)
6935 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6936
6937 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6938 }
6939 }
6940
6941 void
6942 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6943 struct init_cb_24xx *icb)
6944 {
6945 struct qla_hw_data *ha = vha->hw;
6946
6947 if (!QLA_TGT_MODE_ENABLED())
6948 return;
6949
6950 if (ha->tgt.node_name_set) {
6951 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6952 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6953 }
6954 }
6955
6956 void
6957 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6958 {
6959 struct qla_hw_data *ha = vha->hw;
6960 u32 tmp;
6961
6962 if (!QLA_TGT_MODE_ENABLED())
6963 return;
6964
6965 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6966 if (!ha->tgt.saved_set) {
6967 /* We save only once */
6968 ha->tgt.saved_exchange_count = nv->exchange_count;
6969 ha->tgt.saved_firmware_options_1 =
6970 nv->firmware_options_1;
6971 ha->tgt.saved_firmware_options_2 =
6972 nv->firmware_options_2;
6973 ha->tgt.saved_firmware_options_3 =
6974 nv->firmware_options_3;
6975 ha->tgt.saved_set = 1;
6976 }
6977
6978 if (qla_tgt_mode_enabled(vha))
6979 nv->exchange_count = cpu_to_le16(0xFFFF);
6980 else /* dual */
6981 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
6982
6983 /* Enable target mode */
6984 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6985
6986 /* Disable ini mode, if requested */
6987 if (qla_tgt_mode_enabled(vha))
6988 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6989 /* Disable Full Login after LIP */
6990 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6991 /* Enable initial LIP */
6992 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6993 /*
6994 * clear BIT 15 explicitly as we have seen at
6995 * least a couple of instances where this was set
6996 * and this was causing the firmware to not be
6997 * initialized.
6998 */
6999 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
7000 if (ql2xtgt_tape_enable)
7001 /* Enable FC tape support */
7002 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
7003 else
7004 /* Disable FC tape support */
7005 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
7006
7007 /* Disable Full Login after LIP */
7008 nv->host_p &= cpu_to_le32(~BIT_10);
7009 /* Enable target PRLI control */
7010 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
7011
7012 /* Change Loop-prefer to Pt-Pt */
7013 tmp = ~(BIT_4|BIT_5|BIT_6);
7014 nv->firmware_options_2 &= cpu_to_le32(tmp);
7015 tmp = P2P << 4;
7016 nv->firmware_options_2 |= cpu_to_le32(tmp);
7017 } else {
7018 if (ha->tgt.saved_set) {
7019 nv->exchange_count = ha->tgt.saved_exchange_count;
7020 nv->firmware_options_1 =
7021 ha->tgt.saved_firmware_options_1;
7022 nv->firmware_options_2 =
7023 ha->tgt.saved_firmware_options_2;
7024 nv->firmware_options_3 =
7025 ha->tgt.saved_firmware_options_3;
7026 }
7027 return;
7028 }
7029
7030 if (ha->base_qpair->enable_class_2) {
7031 if (vha->flags.init_done)
7032 fc_host_supported_classes(vha->host) =
7033 FC_COS_CLASS2 | FC_COS_CLASS3;
7034
7035 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
7036 } else {
7037 if (vha->flags.init_done)
7038 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
7039
7040 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
7041 }
7042 }
7043
7044 void
7045 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
7046 struct init_cb_81xx *icb)
7047 {
7048 struct qla_hw_data *ha = vha->hw;
7049
7050 if (!QLA_TGT_MODE_ENABLED())
7051 return;
7052
7053 if (ha->tgt.node_name_set) {
7054 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
7055 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
7056 }
7057 }
7058
7059 void
7060 qlt_83xx_iospace_config(struct qla_hw_data *ha)
7061 {
7062 if (!QLA_TGT_MODE_ENABLED())
7063 return;
7064
7065 ha->msix_count += 1; /* For ATIO Q */
7066 }
7067
7068
7069 void
7070 qlt_modify_vp_config(struct scsi_qla_host *vha,
7071 struct vp_config_entry_24xx *vpmod)
7072 {
7073 /* enable target mode. Bit5 = 1 => disable */
7074 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
7075 vpmod->options_idx1 &= ~BIT_5;
7076
7077 /* Disable ini mode, if requested. bit4 = 1 => disable */
7078 if (qla_tgt_mode_enabled(vha))
7079 vpmod->options_idx1 &= ~BIT_4;
7080 }
7081
7082 void
7083 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
7084 {
7085 int rc;
7086
7087 if (!QLA_TGT_MODE_ENABLED())
7088 return;
7089
7090 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
7091 IS_QLA28XX(ha)) {
7092 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
7093 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
7094 } else {
7095 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
7096 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
7097 }
7098
7099 mutex_init(&base_vha->vha_tgt.tgt_mutex);
7100 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
7101
7102 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
7103 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
7104 qlt_unknown_atio_work_fn);
7105
7106 qlt_clear_mode(base_vha);
7107
7108 rc = btree_init32(&ha->tgt.host_map);
7109 if (rc)
7110 ql_log(ql_log_info, base_vha, 0xd03d,
7111 "Unable to initialize ha->host_map btree\n");
7112
7113 qlt_update_vp_map(base_vha, SET_VP_IDX);
7114 }
7115
7116 irqreturn_t
7117 qla83xx_msix_atio_q(int irq, void *dev_id)
7118 {
7119 struct rsp_que *rsp;
7120 scsi_qla_host_t *vha;
7121 struct qla_hw_data *ha;
7122 unsigned long flags;
7123
7124 rsp = (struct rsp_que *) dev_id;
7125 ha = rsp->hw;
7126 vha = pci_get_drvdata(ha->pdev);
7127
7128 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7129
7130 qlt_24xx_process_atio_queue(vha, 0);
7131
7132 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7133
7134 return IRQ_HANDLED;
7135 }
7136
7137 static void
7138 qlt_handle_abts_recv_work(struct work_struct *work)
7139 {
7140 struct qla_tgt_sess_op *op = container_of(work,
7141 struct qla_tgt_sess_op, work);
7142 scsi_qla_host_t *vha = op->vha;
7143 struct qla_hw_data *ha = vha->hw;
7144 unsigned long flags;
7145
7146 if (qla2x00_reset_active(vha) ||
7147 (op->chip_reset != ha->base_qpair->chip_reset))
7148 return;
7149
7150 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7151 qlt_24xx_process_atio_queue(vha, 0);
7152 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7153
7154 spin_lock_irqsave(&ha->hardware_lock, flags);
7155 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
7156 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7157
7158 kfree(op);
7159 }
7160
7161 void
7162 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
7163 response_t *pkt)
7164 {
7165 struct qla_tgt_sess_op *op;
7166
7167 op = kzalloc(sizeof(*op), GFP_ATOMIC);
7168
7169 if (!op) {
7170 /* do not reach for ATIO queue here. This is best effort err
7171 * recovery at this point.
7172 */
7173 qlt_response_pkt_all_vps(vha, rsp, pkt);
7174 return;
7175 }
7176
7177 memcpy(&op->atio, pkt, sizeof(*pkt));
7178 op->vha = vha;
7179 op->chip_reset = vha->hw->base_qpair->chip_reset;
7180 op->rsp = rsp;
7181 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7182 queue_work(qla_tgt_wq, &op->work);
7183 return;
7184 }
7185
7186 int
7187 qlt_mem_alloc(struct qla_hw_data *ha)
7188 {
7189 if (!QLA_TGT_MODE_ENABLED())
7190 return 0;
7191
7192 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC,
7193 sizeof(struct qla_tgt_vp_map),
7194 GFP_KERNEL);
7195 if (!ha->tgt.tgt_vp_map)
7196 return -ENOMEM;
7197
7198 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7199 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7200 &ha->tgt.atio_dma, GFP_KERNEL);
7201 if (!ha->tgt.atio_ring) {
7202 kfree(ha->tgt.tgt_vp_map);
7203 return -ENOMEM;
7204 }
7205 return 0;
7206 }
7207
7208 void
7209 qlt_mem_free(struct qla_hw_data *ha)
7210 {
7211 if (!QLA_TGT_MODE_ENABLED())
7212 return;
7213
7214 if (ha->tgt.atio_ring) {
7215 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7216 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7217 ha->tgt.atio_dma);
7218 }
7219 ha->tgt.atio_ring = NULL;
7220 ha->tgt.atio_dma = 0;
7221 kfree(ha->tgt.tgt_vp_map);
7222 ha->tgt.tgt_vp_map = NULL;
7223 }
7224
7225 /* vport_slock to be held by the caller */
7226 void
7227 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7228 {
7229 void *slot;
7230 u32 key;
7231 int rc;
7232
7233 if (!QLA_TGT_MODE_ENABLED())
7234 return;
7235
7236 key = vha->d_id.b24;
7237
7238 switch (cmd) {
7239 case SET_VP_IDX:
7240 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7241 break;
7242 case SET_AL_PA:
7243 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7244 if (!slot) {
7245 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
7246 "Save vha in host_map %p %06x\n", vha, key);
7247 rc = btree_insert32(&vha->hw->tgt.host_map,
7248 key, vha, GFP_ATOMIC);
7249 if (rc)
7250 ql_log(ql_log_info, vha, 0xd03e,
7251 "Unable to insert s_id into host_map: %06x\n",
7252 key);
7253 return;
7254 }
7255 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7256 "replace existing vha in host_map %p %06x\n", vha, key);
7257 btree_update32(&vha->hw->tgt.host_map, key, vha);
7258 break;
7259 case RESET_VP_IDX:
7260 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7261 break;
7262 case RESET_AL_PA:
7263 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
7264 "clear vha in host_map %p %06x\n", vha, key);
7265 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7266 if (slot)
7267 btree_remove32(&vha->hw->tgt.host_map, key);
7268 vha->d_id.b24 = 0;
7269 break;
7270 }
7271 }
7272
7273 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7274 {
7275
7276 if (!vha->d_id.b24) {
7277 vha->d_id = id;
7278 qlt_update_vp_map(vha, SET_AL_PA);
7279 } else if (vha->d_id.b24 != id.b24) {
7280 qlt_update_vp_map(vha, RESET_AL_PA);
7281 vha->d_id = id;
7282 qlt_update_vp_map(vha, SET_AL_PA);
7283 }
7284 }
7285
7286 static int __init qlt_parse_ini_mode(void)
7287 {
7288 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7289 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7290 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7291 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7292 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7293 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
7294 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7295 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
7296 else
7297 return false;
7298
7299 return true;
7300 }
7301
7302 int __init qlt_init(void)
7303 {
7304 int ret;
7305
7306 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
7307 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
7308
7309 if (!qlt_parse_ini_mode()) {
7310 ql_log(ql_log_fatal, NULL, 0xe06b,
7311 "qlt_parse_ini_mode() failed\n");
7312 return -EINVAL;
7313 }
7314
7315 if (!QLA_TGT_MODE_ENABLED())
7316 return 0;
7317
7318 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7319 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7320 qla_tgt_mgmt_cmd), 0, NULL);
7321 if (!qla_tgt_mgmt_cmd_cachep) {
7322 ql_log(ql_log_fatal, NULL, 0xd04b,
7323 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
7324 return -ENOMEM;
7325 }
7326
7327 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
7328 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7329 0, NULL);
7330
7331 if (!qla_tgt_plogi_cachep) {
7332 ql_log(ql_log_fatal, NULL, 0xe06d,
7333 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7334 ret = -ENOMEM;
7335 goto out_mgmt_cmd_cachep;
7336 }
7337
7338 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7339 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7340 if (!qla_tgt_mgmt_cmd_mempool) {
7341 ql_log(ql_log_fatal, NULL, 0xe06e,
7342 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7343 ret = -ENOMEM;
7344 goto out_plogi_cachep;
7345 }
7346
7347 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7348 if (!qla_tgt_wq) {
7349 ql_log(ql_log_fatal, NULL, 0xe06f,
7350 "alloc_workqueue for qla_tgt_wq failed\n");
7351 ret = -ENOMEM;
7352 goto out_cmd_mempool;
7353 }
7354 /*
7355 * Return 1 to signal that initiator-mode is being disabled
7356 */
7357 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7358
7359 out_cmd_mempool:
7360 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7361 out_plogi_cachep:
7362 kmem_cache_destroy(qla_tgt_plogi_cachep);
7363 out_mgmt_cmd_cachep:
7364 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7365 return ret;
7366 }
7367
7368 void qlt_exit(void)
7369 {
7370 if (!QLA_TGT_MODE_ENABLED())
7371 return;
7372
7373 destroy_workqueue(qla_tgt_wq);
7374 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7375 kmem_cache_destroy(qla_tgt_plogi_cachep);
7376 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7377 }
Linux with added FPC-III support