]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/scsi/qla2xxx/qla_target.c
projects / mirror_ubuntu-artful-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge remote-tracking branch 'regulator/fix/max77802' into regulator-linus
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / qla2xxx / qla_target.c
1 /*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/types.h>
29 #include <linux/blkdev.h>
30 #include <linux/interrupt.h>
31 #include <linux/pci.h>
32 #include <linux/delay.h>
33 #include <linux/list.h>
34 #include <linux/workqueue.h>
35 #include <asm/unaligned.h>
36 #include <scsi/scsi.h>
37 #include <scsi/scsi_host.h>
38 #include <scsi/scsi_tcq.h>
39 #include <target/target_core_base.h>
40 #include <target/target_core_fabric.h>
41
42 #include "qla_def.h"
43 #include "qla_target.h"
44
45 static int ql2xtgt_tape_enable;
46 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47 MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
50 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51 module_param(qlini_mode, charp, S_IRUGO);
52 MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
58 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
59 "when ready "
60 "\"enabled\" (default) - initiator mode will always stay enabled.");
61
62 static int ql_dm_tgt_ex_pct = 50;
63 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
64 MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
65 "For Dual Mode (qlini_mode=dual), this parameter determines "
66 "the percentage of exchanges/cmds FW will allocate resources "
67 "for Target mode.");
68
69 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
70
71 static int temp_sam_status = SAM_STAT_BUSY;
72
73 /*
74 * From scsi/fc/fc_fcp.h
75 */
76 enum fcp_resp_rsp_codes {
77 FCP_TMF_CMPL = 0,
78 FCP_DATA_LEN_INVALID = 1,
79 FCP_CMND_FIELDS_INVALID = 2,
80 FCP_DATA_PARAM_MISMATCH = 3,
81 FCP_TMF_REJECTED = 4,
82 FCP_TMF_FAILED = 5,
83 FCP_TMF_INVALID_LUN = 9,
84 };
85
86 /*
87 * fc_pri_ta from scsi/fc/fc_fcp.h
88 */
89 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
90 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
91 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
92 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
93 #define FCP_PTA_MASK 7 /* mask for task attribute field */
94 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
95 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
96
97 /*
98 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
99 * must be called under HW lock and could unlock/lock it inside.
100 * It isn't an issue, since in the current implementation on the time when
101 * those functions are called:
102 *
103 * - Either context is IRQ and only IRQ handler can modify HW data,
104 * including rings related fields,
105 *
106 * - Or access to target mode variables from struct qla_tgt doesn't
107 * cross those functions boundaries, except tgt_stop, which
108 * additionally protected by irq_cmd_count.
109 */
110 /* Predefs for callbacks handed to qla2xxx LLD */
111 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
112 struct atio_from_isp *pkt, uint8_t);
113 static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
114 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
115 int fn, void *iocb, int flags);
116 static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
117 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
118 static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
119 struct qla_tgt_cmd *cmd);
120 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
121 struct atio_from_isp *atio, uint16_t status, int qfull);
122 static void qlt_disable_vha(struct scsi_qla_host *vha);
123 static void qlt_clear_tgt_db(struct qla_tgt *tgt);
124 static void qlt_send_notify_ack(struct scsi_qla_host *vha,
125 struct imm_ntfy_from_isp *ntfy,
126 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
127 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
128 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
129 struct imm_ntfy_from_isp *imm, int ha_locked);
130 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
131 fc_port_t *fcport, bool local);
132 void qlt_unreg_sess(struct fc_port *sess);
133 static void qlt_24xx_handle_abts(struct scsi_qla_host *,
134 struct abts_recv_from_24xx *);
135
136 /*
137 * Global Variables
138 */
139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
140 static struct kmem_cache *qla_tgt_plogi_cachep;
141 static mempool_t *qla_tgt_mgmt_cmd_mempool;
142 static struct workqueue_struct *qla_tgt_wq;
143 static DEFINE_MUTEX(qla_tgt_mutex);
144 static LIST_HEAD(qla_tgt_glist);
145
146 static const char *prot_op_str(u32 prot_op)
147 {
148 switch (prot_op) {
149 case TARGET_PROT_NORMAL: return "NORMAL";
150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
154 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
156 default: return "UNKNOWN";
157 }
158 }
159
160 /* This API intentionally takes dest as a parameter, rather than returning
161 * int value to avoid caller forgetting to issue wmb() after the store */
162 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
163 {
164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
165 *dest = atomic_inc_return(&base_vha->generation_tick);
166 /* memory barrier */
167 wmb();
168 }
169
170 /* Might release hw lock, then reaquire!! */
171 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
172 {
173 /* Send marker if required */
174 if (unlikely(vha->marker_needed != 0)) {
175 int rc = qla2x00_issue_marker(vha, vha_locked);
176 if (rc != QLA_SUCCESS) {
177 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
178 "qla_target(%d): issue_marker() failed\n",
179 vha->vp_idx);
180 }
181 return rc;
182 }
183 return QLA_SUCCESS;
184 }
185
186 static inline
187 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
188 uint8_t *d_id)
189 {
190 struct scsi_qla_host *host;
191 uint32_t key = 0;
192
193 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
194 (vha->d_id.b.al_pa == d_id[2]))
195 return vha;
196
197 key = (uint32_t)d_id[0] << 16;
198 key |= (uint32_t)d_id[1] << 8;
199 key |= (uint32_t)d_id[2];
200
201 host = btree_lookup32(&vha->hw->tgt.host_map, key);
202 if (!host)
203 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
204 "Unable to find host %06x\n", key);
205
206 return host;
207 }
208
209 static inline
210 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
211 uint16_t vp_idx)
212 {
213 struct qla_hw_data *ha = vha->hw;
214
215 if (vha->vp_idx == vp_idx)
216 return vha;
217
218 BUG_ON(ha->tgt.tgt_vp_map == NULL);
219 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
220 return ha->tgt.tgt_vp_map[vp_idx].vha;
221
222 return NULL;
223 }
224
225 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
226 {
227 unsigned long flags;
228
229 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
230
231 vha->hw->tgt.num_pend_cmds++;
232 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
233 vha->qla_stats.stat_max_pend_cmds =
234 vha->hw->tgt.num_pend_cmds;
235 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
236 }
237 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
238 {
239 unsigned long flags;
240
241 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
242 vha->hw->tgt.num_pend_cmds--;
243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
244 }
245
246
247 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
248 struct atio_from_isp *atio, uint8_t ha_locked)
249 {
250 struct qla_tgt_sess_op *u;
251 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
252 unsigned long flags;
253
254 if (tgt->tgt_stop) {
255 ql_dbg(ql_dbg_async, vha, 0xffff,
256 "qla_target(%d): dropping unknown ATIO_TYPE7, "
257 "because tgt is being stopped", vha->vp_idx);
258 goto out_term;
259 }
260
261 u = kzalloc(sizeof(*u), GFP_ATOMIC);
262 if (u == NULL) {
263 ql_dbg(ql_dbg_async, vha, 0xffff,
264 "Alloc of struct unknown_atio (size %zd) failed", sizeof(*u));
265 /* It should be harmless and on the next retry should work well */
266 goto out_term;
267 }
268
269 u->vha = vha;
270 memcpy(&u->atio, atio, sizeof(*atio));
271 INIT_LIST_HEAD(&u->cmd_list);
272
273 spin_lock_irqsave(&vha->cmd_list_lock, flags);
274 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
275 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
276
277 schedule_delayed_work(&vha->unknown_atio_work, 1);
278
279 out:
280 return;
281
282 out_term:
283 qlt_send_term_exchange(vha, NULL, atio, ha_locked, 0);
284 goto out;
285 }
286
287 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
288 uint8_t ha_locked)
289 {
290 struct qla_tgt_sess_op *u, *t;
291 scsi_qla_host_t *host;
292 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
293 unsigned long flags;
294 uint8_t queued = 0;
295
296 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
297 if (u->aborted) {
298 ql_dbg(ql_dbg_async, vha, 0xffff,
299 "Freeing unknown %s %p, because of Abort",
300 "ATIO_TYPE7", u);
301 qlt_send_term_exchange(vha, NULL, &u->atio,
302 ha_locked, 0);
303 goto abort;
304 }
305
306 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
307 if (host != NULL) {
308 ql_dbg(ql_dbg_async, vha, 0xffff,
309 "Requeuing unknown ATIO_TYPE7 %p", u);
310 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
311 } else if (tgt->tgt_stop) {
312 ql_dbg(ql_dbg_async, vha, 0xffff,
313 "Freeing unknown %s %p, because tgt is being stopped",
314 "ATIO_TYPE7", u);
315 qlt_send_term_exchange(vha, NULL, &u->atio,
316 ha_locked, 0);
317 } else {
318 ql_dbg(ql_dbg_async, vha, 0xffff,
319 "u %p, vha %p, host %p, sched again..", u,
320 vha, host);
321 if (!queued) {
322 queued = 1;
323 schedule_delayed_work(&vha->unknown_atio_work,
324 1);
325 }
326 continue;
327 }
328
329 abort:
330 spin_lock_irqsave(&vha->cmd_list_lock, flags);
331 list_del(&u->cmd_list);
332 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
333 kfree(u);
334 }
335 }
336
337 void qlt_unknown_atio_work_fn(struct work_struct *work)
338 {
339 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
340 struct scsi_qla_host, unknown_atio_work);
341
342 qlt_try_to_dequeue_unknown_atios(vha, 0);
343 }
344
345 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
346 struct atio_from_isp *atio, uint8_t ha_locked)
347 {
348 ql_dbg(ql_dbg_tgt, vha, 0xe072,
349 "%s: qla_target(%d): type %x ox_id %04x\n",
350 __func__, vha->vp_idx, atio->u.raw.entry_type,
351 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
352
353 switch (atio->u.raw.entry_type) {
354 case ATIO_TYPE7:
355 {
356 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
357 atio->u.isp24.fcp_hdr.d_id);
358 if (unlikely(NULL == host)) {
359 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
360 "qla_target(%d): Received ATIO_TYPE7 "
361 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
362 atio->u.isp24.fcp_hdr.d_id[0],
363 atio->u.isp24.fcp_hdr.d_id[1],
364 atio->u.isp24.fcp_hdr.d_id[2]);
365
366
367 qlt_queue_unknown_atio(vha, atio, ha_locked);
368 break;
369 }
370 if (unlikely(!list_empty(&vha->unknown_atio_list)))
371 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
372
373 qlt_24xx_atio_pkt(host, atio, ha_locked);
374 break;
375 }
376
377 case IMMED_NOTIFY_TYPE:
378 {
379 struct scsi_qla_host *host = vha;
380 struct imm_ntfy_from_isp *entry =
381 (struct imm_ntfy_from_isp *)atio;
382
383 if ((entry->u.isp24.vp_index != 0xFF) &&
384 (entry->u.isp24.nport_handle != 0xFFFF)) {
385 host = qlt_find_host_by_vp_idx(vha,
386 entry->u.isp24.vp_index);
387 if (unlikely(!host)) {
388 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
389 "qla_target(%d): Received "
390 "ATIO (IMMED_NOTIFY_TYPE) "
391 "with unknown vp_index %d\n",
392 vha->vp_idx, entry->u.isp24.vp_index);
393 break;
394 }
395 }
396 qlt_24xx_atio_pkt(host, atio, ha_locked);
397 break;
398 }
399
400 case VP_RPT_ID_IOCB_TYPE:
401 qla24xx_report_id_acquisition(vha,
402 (struct vp_rpt_id_entry_24xx *)atio);
403 break;
404
405 case ABTS_RECV_24XX:
406 {
407 struct abts_recv_from_24xx *entry =
408 (struct abts_recv_from_24xx *)atio;
409 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
410 entry->vp_index);
411 unsigned long flags;
412
413 if (unlikely(!host)) {
414 ql_dbg(ql_dbg_tgt, vha, 0xffff,
415 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
416 "received, with unknown vp_index %d\n",
417 vha->vp_idx, entry->vp_index);
418 break;
419 }
420 if (!ha_locked)
421 spin_lock_irqsave(&host->hw->hardware_lock, flags);
422 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
423 if (!ha_locked)
424 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
425 break;
426 }
427
428 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
429
430 default:
431 ql_dbg(ql_dbg_tgt, vha, 0xe040,
432 "qla_target(%d): Received unknown ATIO atio "
433 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
434 break;
435 }
436
437 return false;
438 }
439
440 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 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 case CTIO_TYPE7:
448 {
449 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
450 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
451 entry->vp_index);
452 if (unlikely(!host)) {
453 ql_dbg(ql_dbg_tgt, vha, 0xe041,
454 "qla_target(%d): Response pkt (CTIO_TYPE7) "
455 "received, with unknown vp_index %d\n",
456 vha->vp_idx, entry->vp_index);
457 break;
458 }
459 qlt_response_pkt(host, pkt);
460 break;
461 }
462
463 case IMMED_NOTIFY_TYPE:
464 {
465 struct scsi_qla_host *host = vha;
466 struct imm_ntfy_from_isp *entry =
467 (struct imm_ntfy_from_isp *)pkt;
468
469 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
470 if (unlikely(!host)) {
471 ql_dbg(ql_dbg_tgt, vha, 0xe042,
472 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
473 "received, with unknown vp_index %d\n",
474 vha->vp_idx, entry->u.isp24.vp_index);
475 break;
476 }
477 qlt_response_pkt(host, pkt);
478 break;
479 }
480
481 case NOTIFY_ACK_TYPE:
482 {
483 struct scsi_qla_host *host = vha;
484 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
485
486 if (0xFF != entry->u.isp24.vp_index) {
487 host = qlt_find_host_by_vp_idx(vha,
488 entry->u.isp24.vp_index);
489 if (unlikely(!host)) {
490 ql_dbg(ql_dbg_tgt, vha, 0xe043,
491 "qla_target(%d): Response "
492 "pkt (NOTIFY_ACK_TYPE) "
493 "received, with unknown "
494 "vp_index %d\n", vha->vp_idx,
495 entry->u.isp24.vp_index);
496 break;
497 }
498 }
499 qlt_response_pkt(host, pkt);
500 break;
501 }
502
503 case ABTS_RECV_24XX:
504 {
505 struct abts_recv_from_24xx *entry =
506 (struct abts_recv_from_24xx *)pkt;
507 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
508 entry->vp_index);
509 if (unlikely(!host)) {
510 ql_dbg(ql_dbg_tgt, vha, 0xe044,
511 "qla_target(%d): Response pkt "
512 "(ABTS_RECV_24XX) received, with unknown "
513 "vp_index %d\n", vha->vp_idx, entry->vp_index);
514 break;
515 }
516 qlt_response_pkt(host, pkt);
517 break;
518 }
519
520 case ABTS_RESP_24XX:
521 {
522 struct abts_resp_to_24xx *entry =
523 (struct abts_resp_to_24xx *)pkt;
524 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
525 entry->vp_index);
526 if (unlikely(!host)) {
527 ql_dbg(ql_dbg_tgt, vha, 0xe045,
528 "qla_target(%d): Response pkt "
529 "(ABTS_RECV_24XX) received, with unknown "
530 "vp_index %d\n", vha->vp_idx, entry->vp_index);
531 break;
532 }
533 qlt_response_pkt(host, pkt);
534 break;
535 }
536
537 default:
538 qlt_response_pkt(vha, 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 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
552 if (!e)
553 return QLA_FUNCTION_FAILED;
554
555 e->u.nack.fcport = fcport;
556 e->u.nack.type = type;
557 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
558 return qla2x00_post_work(vha, e);
559 }
560
561 static
562 void qla2x00_async_nack_sp_done(void *s, int res)
563 {
564 struct srb *sp = (struct srb *)s;
565 struct scsi_qla_host *vha = sp->vha;
566 unsigned long flags;
567
568 ql_dbg(ql_dbg_disc, vha, 0xffff,
569 "Async done-%s res %x %8phC type %d\n",
570 sp->name, res, sp->fcport->port_name, sp->type);
571
572 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
573 sp->fcport->flags &= ~FCF_ASYNC_SENT;
574 sp->fcport->chip_reset = vha->hw->chip_reset;
575
576 switch (sp->type) {
577 case SRB_NACK_PLOGI:
578 sp->fcport->login_gen++;
579 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
580 sp->fcport->logout_on_delete = 1;
581 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
582 break;
583
584 case SRB_NACK_PRLI:
585 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
586 sp->fcport->deleted = 0;
587
588 if (!sp->fcport->login_succ &&
589 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
590 sp->fcport->login_succ = 1;
591
592 vha->fcport_count++;
593
594 if (!IS_IIDMA_CAPABLE(vha->hw) ||
595 !vha->hw->flags.gpsc_supported) {
596 ql_dbg(ql_dbg_disc, vha, 0xffff,
597 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
598 __func__, __LINE__,
599 sp->fcport->port_name,
600 vha->fcport_count);
601
602 qla24xx_post_upd_fcport_work(vha, sp->fcport);
603 } else {
604 ql_dbg(ql_dbg_disc, vha, 0xffff,
605 "%s %d %8phC post gpsc fcp_cnt %d\n",
606 __func__, __LINE__,
607 sp->fcport->port_name,
608 vha->fcport_count);
609
610 qla24xx_post_gpsc_work(vha, sp->fcport);
611 }
612 }
613 break;
614
615 case SRB_NACK_LOGO:
616 sp->fcport->login_gen++;
617 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
618 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
619 break;
620 }
621 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
622
623 sp->free(sp);
624 }
625
626 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
627 struct imm_ntfy_from_isp *ntfy, int type)
628 {
629 int rval = QLA_FUNCTION_FAILED;
630 srb_t *sp;
631 char *c = NULL;
632
633 fcport->flags |= FCF_ASYNC_SENT;
634 switch (type) {
635 case SRB_NACK_PLOGI:
636 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
637 c = "PLOGI";
638 break;
639 case SRB_NACK_PRLI:
640 fcport->fw_login_state = DSC_LS_PRLI_PEND;
641 fcport->deleted = 0;
642 c = "PRLI";
643 break;
644 case SRB_NACK_LOGO:
645 fcport->fw_login_state = DSC_LS_LOGO_PEND;
646 c = "LOGO";
647 break;
648 }
649
650 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
651 if (!sp)
652 goto done;
653
654 sp->type = type;
655 sp->name = "nack";
656
657 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
658
659 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
660
661 sp->done = qla2x00_async_nack_sp_done;
662
663 rval = qla2x00_start_sp(sp);
664 if (rval != QLA_SUCCESS)
665 goto done_free_sp;
666
667 ql_dbg(ql_dbg_disc, vha, 0xffff,
668 "Async-%s %8phC hndl %x %s\n",
669 sp->name, fcport->port_name, sp->handle, c);
670
671 return rval;
672
673 done_free_sp:
674 sp->free(sp);
675 done:
676 fcport->flags &= ~FCF_ASYNC_SENT;
677 return rval;
678 }
679
680 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
681 {
682 fc_port_t *t;
683 unsigned long flags;
684
685 switch (e->u.nack.type) {
686 case SRB_NACK_PRLI:
687 mutex_lock(&vha->vha_tgt.tgt_mutex);
688 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
689 mutex_unlock(&vha->vha_tgt.tgt_mutex);
690 if (t) {
691 ql_log(ql_log_info, vha, 0xffff,
692 "%s create sess success %p", __func__, t);
693 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
694 /* create sess has an extra kref */
695 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
696 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
697 }
698 break;
699 }
700 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
701 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
702 }
703
704 void qla24xx_delete_sess_fn(struct work_struct *work)
705 {
706 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
707 struct qla_hw_data *ha = fcport->vha->hw;
708 unsigned long flags;
709
710 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
711
712 if (fcport->se_sess) {
713 ha->tgt.tgt_ops->shutdown_sess(fcport);
714 ha->tgt.tgt_ops->put_sess(fcport);
715 } else {
716 qlt_unreg_sess(fcport);
717 }
718 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
719 }
720
721 /*
722 * Called from qla2x00_reg_remote_port()
723 */
724 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
725 {
726 struct qla_hw_data *ha = vha->hw;
727 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
728 struct fc_port *sess = fcport;
729 unsigned long flags;
730
731 if (!vha->hw->tgt.tgt_ops)
732 return;
733
734 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
735 if (tgt->tgt_stop) {
736 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
737 return;
738 }
739
740 if (fcport->disc_state == DSC_DELETE_PEND) {
741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
742 return;
743 }
744
745 if (!sess->se_sess) {
746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
747
748 mutex_lock(&vha->vha_tgt.tgt_mutex);
749 sess = qlt_create_sess(vha, fcport, false);
750 mutex_unlock(&vha->vha_tgt.tgt_mutex);
751
752 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
753 } else {
754 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
755 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
756 return;
757 }
758
759 if (!kref_get_unless_zero(&sess->sess_kref)) {
760 ql_dbg(ql_dbg_disc, vha, 0xffff,
761 "%s: kref_get fail sess %8phC \n",
762 __func__, sess->port_name);
763 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
764 return;
765 }
766
767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
768 "qla_target(%u): %ssession for port %8phC "
769 "(loop ID %d) reappeared\n", vha->vp_idx,
770 sess->local ? "local " : "", sess->port_name, sess->loop_id);
771
772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
773 "Reappeared sess %p\n", sess);
774
775 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
776 fcport->loop_id,
777 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
778 }
779
780 if (sess && sess->local) {
781 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
782 "qla_target(%u): local session for "
783 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
784 fcport->port_name, sess->loop_id);
785 sess->local = 0;
786 }
787 ha->tgt.tgt_ops->put_sess(sess);
788 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
789 }
790
791 /*
792 * This is a zero-base ref-counting solution, since hardware_lock
793 * guarantees that ref_count is not modified concurrently.
794 * Upon successful return content of iocb is undefined
795 */
796 static struct qlt_plogi_ack_t *
797 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
798 struct imm_ntfy_from_isp *iocb)
799 {
800 struct qlt_plogi_ack_t *pla;
801
802 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
803 if (pla->id.b24 == id->b24) {
804 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
805 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
806 return pla;
807 }
808 }
809
810 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
811 if (!pla) {
812 ql_dbg(ql_dbg_async, vha, 0x5088,
813 "qla_target(%d): Allocation of plogi_ack failed\n",
814 vha->vp_idx);
815 return NULL;
816 }
817
818 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
819 pla->id = *id;
820 list_add_tail(&pla->list, &vha->plogi_ack_list);
821
822 return pla;
823 }
824
825 void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
826 struct qlt_plogi_ack_t *pla)
827 {
828 struct imm_ntfy_from_isp *iocb = &pla->iocb;
829 port_id_t port_id;
830 uint16_t loop_id;
831 fc_port_t *fcport = pla->fcport;
832
833 BUG_ON(!pla->ref_count);
834 pla->ref_count--;
835
836 if (pla->ref_count)
837 return;
838
839 ql_dbg(ql_dbg_disc, vha, 0x5089,
840 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
841 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
842 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
843 iocb->u.isp24.port_id[0],
844 le16_to_cpu(iocb->u.isp24.nport_handle),
845 iocb->u.isp24.exchange_address, iocb->ox_id);
846
847 port_id.b.domain = iocb->u.isp24.port_id[2];
848 port_id.b.area = iocb->u.isp24.port_id[1];
849 port_id.b.al_pa = iocb->u.isp24.port_id[0];
850 port_id.b.rsvd_1 = 0;
851
852 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
853
854 fcport->loop_id = loop_id;
855 fcport->d_id = port_id;
856 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
857
858 list_for_each_entry(fcport, &vha->vp_fcports, list) {
859 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
860 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
861 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
862 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
863 }
864
865 list_del(&pla->list);
866 kmem_cache_free(qla_tgt_plogi_cachep, pla);
867 }
868
869 void
870 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
871 struct fc_port *sess, enum qlt_plogi_link_t link)
872 {
873 struct imm_ntfy_from_isp *iocb = &pla->iocb;
874 /* Inc ref_count first because link might already be pointing at pla */
875 pla->ref_count++;
876
877 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
878 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
879 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
880 sess, link, sess->port_name,
881 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
882 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
883 pla->ref_count, pla, link);
884
885 if (sess->plogi_link[link])
886 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
887
888 if (link == QLT_PLOGI_LINK_SAME_WWN)
889 pla->fcport = sess;
890
891 sess->plogi_link[link] = pla;
892 }
893
894 typedef struct {
895 /* These fields must be initialized by the caller */
896 port_id_t id;
897 /*
898 * number of cmds dropped while we were waiting for
899 * initiator to ack LOGO initialize to 1 if LOGO is
900 * triggered by a command, otherwise, to 0
901 */
902 int cmd_count;
903
904 /* These fields are used by callee */
905 struct list_head list;
906 } qlt_port_logo_t;
907
908 static void
909 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
910 {
911 qlt_port_logo_t *tmp;
912 int res;
913
914 mutex_lock(&vha->vha_tgt.tgt_mutex);
915
916 list_for_each_entry(tmp, &vha->logo_list, list) {
917 if (tmp->id.b24 == logo->id.b24) {
918 tmp->cmd_count += logo->cmd_count;
919 mutex_unlock(&vha->vha_tgt.tgt_mutex);
920 return;
921 }
922 }
923
924 list_add_tail(&logo->list, &vha->logo_list);
925
926 mutex_unlock(&vha->vha_tgt.tgt_mutex);
927
928 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
929
930 mutex_lock(&vha->vha_tgt.tgt_mutex);
931 list_del(&logo->list);
932 mutex_unlock(&vha->vha_tgt.tgt_mutex);
933
934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
935 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
936 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
937 logo->cmd_count, res);
938 }
939
940 static void qlt_free_session_done(struct work_struct *work)
941 {
942 struct fc_port *sess = container_of(work, struct fc_port,
943 free_work);
944 struct qla_tgt *tgt = sess->tgt;
945 struct scsi_qla_host *vha = sess->vha;
946 struct qla_hw_data *ha = vha->hw;
947 unsigned long flags;
948 bool logout_started = false;
949 struct event_arg ea;
950 scsi_qla_host_t *base_vha;
951
952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
953 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
954 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
955 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
956 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
957 sess->logout_on_delete, sess->keep_nport_handle,
958 sess->send_els_logo);
959
960
961 if (!IS_SW_RESV_ADDR(sess->d_id)) {
962 if (sess->send_els_logo) {
963 qlt_port_logo_t logo;
964
965 logo.id = sess->d_id;
966 logo.cmd_count = 0;
967 qlt_send_first_logo(vha, &logo);
968 }
969
970 if (sess->logout_on_delete) {
971 int rc;
972
973 rc = qla2x00_post_async_logout_work(vha, sess, NULL);
974 if (rc != QLA_SUCCESS)
975 ql_log(ql_log_warn, vha, 0xf085,
976 "Schedule logo failed sess %p rc %d\n",
977 sess, rc);
978 else
979 logout_started = true;
980 }
981 }
982
983 /*
984 * Release the target session for FC Nexus from fabric module code.
985 */
986 if (sess->se_sess != NULL)
987 ha->tgt.tgt_ops->free_session(sess);
988
989 if (logout_started) {
990 bool traced = false;
991
992 while (!ACCESS_ONCE(sess->logout_completed)) {
993 if (!traced) {
994 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
995 "%s: waiting for sess %p logout\n",
996 __func__, sess);
997 traced = true;
998 }
999 msleep(100);
1000 }
1001
1002 ql_dbg(ql_dbg_disc, vha, 0xf087,
1003 "%s: sess %p logout completed\n",__func__, sess);
1004 }
1005
1006 if (sess->logo_ack_needed) {
1007 sess->logo_ack_needed = 0;
1008 qla24xx_async_notify_ack(vha, sess,
1009 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
1010 }
1011
1012 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1013 if (sess->se_sess) {
1014 sess->se_sess = NULL;
1015 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1016 tgt->sess_count--;
1017 }
1018
1019 sess->disc_state = DSC_DELETED;
1020 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1021 sess->deleted = QLA_SESS_DELETED;
1022 sess->login_retry = vha->hw->login_retry_count;
1023
1024 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1025 vha->fcport_count--;
1026 sess->login_succ = 0;
1027 }
1028
1029 if (sess->chip_reset != sess->vha->hw->chip_reset)
1030 qla2x00_clear_loop_id(sess);
1031
1032 if (sess->conflict) {
1033 sess->conflict->login_pause = 0;
1034 sess->conflict = NULL;
1035 if (!test_bit(UNLOADING, &vha->dpc_flags))
1036 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1037 }
1038
1039 {
1040 struct qlt_plogi_ack_t *own =
1041 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
1042 struct qlt_plogi_ack_t *con =
1043 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
1044 struct imm_ntfy_from_isp *iocb;
1045
1046 if (con) {
1047 iocb = &con->iocb;
1048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
1049 "se_sess %p / sess %p port %8phC is gone,"
1050 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1051 sess->se_sess, sess, sess->port_name,
1052 own ? "releasing own PLOGI" : "no own PLOGI pending",
1053 own ? own->ref_count : -1,
1054 iocb->u.isp24.port_name, con->ref_count);
1055 qlt_plogi_ack_unref(vha, con);
1056 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
1057 } else {
1058 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1059 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1060 sess->se_sess, sess, sess->port_name,
1061 own ? "releasing own PLOGI" :
1062 "no own PLOGI pending",
1063 own ? own->ref_count : -1);
1064 }
1065
1066 if (own) {
1067 sess->fw_login_state = DSC_LS_PLOGI_PEND;
1068 qlt_plogi_ack_unref(vha, own);
1069 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1070 }
1071 }
1072 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1073
1074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
1075 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1076 sess, sess->port_name, vha->fcport_count);
1077
1078 if (tgt && (tgt->sess_count == 0))
1079 wake_up_all(&tgt->waitQ);
1080
1081 if (vha->fcport_count == 0)
1082 wake_up_all(&vha->fcport_waitQ);
1083
1084 base_vha = pci_get_drvdata(ha->pdev);
1085 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1086 return;
1087
1088 if (!tgt || !tgt->tgt_stop) {
1089 memset(&ea, 0, sizeof(ea));
1090 ea.event = FCME_DELETE_DONE;
1091 ea.fcport = sess;
1092 qla2x00_fcport_event_handler(vha, &ea);
1093 }
1094 }
1095
1096 /* ha->tgt.sess_lock supposed to be held on entry */
1097 void qlt_unreg_sess(struct fc_port *sess)
1098 {
1099 struct scsi_qla_host *vha = sess->vha;
1100
1101 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
1102 "%s sess %p for deletion %8phC\n",
1103 __func__, sess, sess->port_name);
1104
1105 if (sess->se_sess)
1106 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
1107
1108 qla2x00_mark_device_lost(vha, sess, 1, 1);
1109
1110 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1111 sess->disc_state = DSC_DELETE_PEND;
1112 sess->last_rscn_gen = sess->rscn_gen;
1113 sess->last_login_gen = sess->login_gen;
1114
1115 INIT_WORK(&sess->free_work, qlt_free_session_done);
1116 schedule_work(&sess->free_work);
1117 }
1118 EXPORT_SYMBOL(qlt_unreg_sess);
1119
1120 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1121 {
1122 struct qla_hw_data *ha = vha->hw;
1123 struct fc_port *sess = NULL;
1124 uint16_t loop_id;
1125 int res = 0;
1126 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
1127 unsigned long flags;
1128
1129 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1130 if (loop_id == 0xFFFF) {
1131 /* Global event */
1132 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
1133 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1134 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
1135 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1136 } else {
1137 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1138 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
1139 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1140 }
1141
1142 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1143 "Using sess for qla_tgt_reset: %p\n", sess);
1144 if (!sess) {
1145 res = -ESRCH;
1146 return res;
1147 }
1148
1149 ql_dbg(ql_dbg_tgt, vha, 0xe047,
1150 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1151 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
1152 mcmd, loop_id);
1153
1154 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
1155 }
1156
1157 static void qla24xx_chk_fcp_state(struct fc_port *sess)
1158 {
1159 if (sess->chip_reset != sess->vha->hw->chip_reset) {
1160 sess->logout_on_delete = 0;
1161 sess->logo_ack_needed = 0;
1162 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1163 sess->scan_state = 0;
1164 }
1165 }
1166
1167 /* ha->tgt.sess_lock supposed to be held on entry */
1168 void qlt_schedule_sess_for_deletion(struct fc_port *sess,
1169 bool immediate)
1170 {
1171 struct qla_tgt *tgt = sess->tgt;
1172
1173 if (sess->disc_state == DSC_DELETE_PEND)
1174 return;
1175
1176 if (sess->disc_state == DSC_DELETED) {
1177 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1178 wake_up_all(&tgt->waitQ);
1179 if (sess->vha->fcport_count == 0)
1180 wake_up_all(&sess->vha->fcport_waitQ);
1181
1182 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1183 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
1184 return;
1185 }
1186
1187 sess->disc_state = DSC_DELETE_PEND;
1188
1189 if (sess->deleted == QLA_SESS_DELETED)
1190 sess->logout_on_delete = 0;
1191
1192 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1193 qla24xx_chk_fcp_state(sess);
1194
1195 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1196 "Scheduling sess %p for deletion\n", sess);
1197
1198 schedule_work(&sess->del_work);
1199 }
1200
1201 void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess)
1202 {
1203 unsigned long flags;
1204 struct qla_hw_data *ha = sess->vha->hw;
1205 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1206 qlt_schedule_sess_for_deletion(sess, 1);
1207 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1208 }
1209
1210 /* ha->tgt.sess_lock supposed to be held on entry */
1211 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
1212 {
1213 struct fc_port *sess;
1214 scsi_qla_host_t *vha = tgt->vha;
1215
1216 list_for_each_entry(sess, &vha->vp_fcports, list) {
1217 if (sess->se_sess)
1218 qlt_schedule_sess_for_deletion(sess, 1);
1219 }
1220
1221 /* At this point tgt could be already dead */
1222 }
1223
1224 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1225 uint16_t *loop_id)
1226 {
1227 struct qla_hw_data *ha = vha->hw;
1228 dma_addr_t gid_list_dma;
1229 struct gid_list_info *gid_list;
1230 char *id_iter;
1231 int res, rc, i;
1232 uint16_t entries;
1233
1234 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1235 &gid_list_dma, GFP_KERNEL);
1236 if (!gid_list) {
1237 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1238 "qla_target(%d): DMA Alloc failed of %u\n",
1239 vha->vp_idx, qla2x00_gid_list_size(ha));
1240 return -ENOMEM;
1241 }
1242
1243 /* Get list of logged in devices */
1244 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
1245 if (rc != QLA_SUCCESS) {
1246 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1247 "qla_target(%d): get_id_list() failed: %x\n",
1248 vha->vp_idx, rc);
1249 res = -EBUSY;
1250 goto out_free_id_list;
1251 }
1252
1253 id_iter = (char *)gid_list;
1254 res = -ENOENT;
1255 for (i = 0; i < entries; i++) {
1256 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1257 if ((gid->al_pa == s_id[2]) &&
1258 (gid->area == s_id[1]) &&
1259 (gid->domain == s_id[0])) {
1260 *loop_id = le16_to_cpu(gid->loop_id);
1261 res = 0;
1262 break;
1263 }
1264 id_iter += ha->gid_list_info_size;
1265 }
1266
1267 out_free_id_list:
1268 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1269 gid_list, gid_list_dma);
1270 return res;
1271 }
1272
1273 /*
1274 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1275 * Caller must put it.
1276 */
1277 static struct fc_port *qlt_create_sess(
1278 struct scsi_qla_host *vha,
1279 fc_port_t *fcport,
1280 bool local)
1281 {
1282 struct qla_hw_data *ha = vha->hw;
1283 struct fc_port *sess = fcport;
1284 unsigned long flags;
1285
1286 if (vha->vha_tgt.qla_tgt->tgt_stop)
1287 return NULL;
1288
1289 if (fcport->se_sess) {
1290 if (!kref_get_unless_zero(&sess->sess_kref)) {
1291 ql_dbg(ql_dbg_disc, vha, 0xffff,
1292 "%s: kref_get_unless_zero failed for %8phC\n",
1293 __func__, sess->port_name);
1294 return NULL;
1295 }
1296 return fcport;
1297 }
1298 sess->tgt = vha->vha_tgt.qla_tgt;
1299 sess->local = local;
1300
1301 /*
1302 * Under normal circumstances we want to logout from firmware when
1303 * session eventually ends and release corresponding nport handle.
1304 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
1305 * code will adjust these flags as necessary.
1306 */
1307 sess->logout_on_delete = 1;
1308 sess->keep_nport_handle = 0;
1309 sess->logout_completed = 0;
1310
1311 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1312 &fcport->port_name[0], sess) < 0) {
1313 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
1314 "(%d) %8phC check_initiator_node_acl failed\n",
1315 vha->vp_idx, fcport->port_name);
1316 return NULL;
1317 } else {
1318 kref_init(&fcport->sess_kref);
1319 /*
1320 * Take an extra reference to ->sess_kref here to handle
1321 * fc_port access across ->tgt.sess_lock reaquire.
1322 */
1323 if (!kref_get_unless_zero(&sess->sess_kref)) {
1324 ql_dbg(ql_dbg_disc, vha, 0xffff,
1325 "%s: kref_get_unless_zero failed for %8phC\n",
1326 __func__, sess->port_name);
1327 return NULL;
1328 }
1329
1330 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1331 if (!IS_SW_RESV_ADDR(sess->d_id))
1332 vha->vha_tgt.qla_tgt->sess_count++;
1333
1334 qlt_do_generation_tick(vha, &sess->generation);
1335 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1336 }
1337
1338 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1339 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1340 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1341 vha->vha_tgt.qla_tgt->sess_count);
1342
1343 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
1344 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1345 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1346 vha->vp_idx, local ? "local " : "", fcport->port_name,
1347 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1348 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
1349
1350 return sess;
1351 }
1352
1353 /*
1354 * max_gen - specifies maximum session generation
1355 * at which this deletion requestion is still valid
1356 */
1357 void
1358 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
1359 {
1360 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1361 struct fc_port *sess = fcport;
1362 unsigned long flags;
1363
1364 if (!vha->hw->tgt.tgt_ops)
1365 return;
1366
1367 if (!tgt)
1368 return;
1369
1370 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
1371 if (tgt->tgt_stop) {
1372 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1373 return;
1374 }
1375 if (!sess->se_sess) {
1376 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1377 return;
1378 }
1379
1380 if (max_gen - sess->generation < 0) {
1381 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1383 "Ignoring stale deletion request for se_sess %p / sess %p"
1384 " for port %8phC, req_gen %d, sess_gen %d\n",
1385 sess->se_sess, sess, sess->port_name, max_gen,
1386 sess->generation);
1387 return;
1388 }
1389
1390 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1391
1392 sess->local = 1;
1393 qlt_schedule_sess_for_deletion(sess, false);
1394 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1395 }
1396
1397 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1398 {
1399 struct qla_hw_data *ha = tgt->ha;
1400 unsigned long flags;
1401 int res;
1402 /*
1403 * We need to protect against race, when tgt is freed before or
1404 * inside wake_up()
1405 */
1406 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1407 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1408 "tgt %p, sess_count=%d\n",
1409 tgt, tgt->sess_count);
1410 res = (tgt->sess_count == 0);
1411 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1412
1413 return res;
1414 }
1415
1416 /* Called by tcm_qla2xxx configfs code */
1417 int qlt_stop_phase1(struct qla_tgt *tgt)
1418 {
1419 struct scsi_qla_host *vha = tgt->vha;
1420 struct qla_hw_data *ha = tgt->ha;
1421 unsigned long flags;
1422
1423 mutex_lock(&qla_tgt_mutex);
1424 if (!vha->fc_vport) {
1425 struct Scsi_Host *sh = vha->host;
1426 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1427 bool npiv_vports;
1428
1429 spin_lock_irqsave(sh->host_lock, flags);
1430 npiv_vports = (fc_host->npiv_vports_inuse);
1431 spin_unlock_irqrestore(sh->host_lock, flags);
1432
1433 if (npiv_vports) {
1434 mutex_unlock(&qla_tgt_mutex);
1435 return -EPERM;
1436 }
1437 }
1438 if (tgt->tgt_stop || tgt->tgt_stopped) {
1439 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1440 "Already in tgt->tgt_stop or tgt_stopped state\n");
1441 mutex_unlock(&qla_tgt_mutex);
1442 return -EPERM;
1443 }
1444
1445 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1446 vha->host_no, vha);
1447 /*
1448 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1449 * Lock is needed, because we still can get an incoming packet.
1450 */
1451 mutex_lock(&vha->vha_tgt.tgt_mutex);
1452 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1453 tgt->tgt_stop = 1;
1454 qlt_clear_tgt_db(tgt);
1455 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1456 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1457 mutex_unlock(&qla_tgt_mutex);
1458
1459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1460 "Waiting for sess works (tgt %p)", tgt);
1461 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1462 while (!list_empty(&tgt->sess_works_list)) {
1463 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1464 flush_scheduled_work();
1465 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1466 }
1467 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1468
1469 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1470 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
1471
1472 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1473
1474 /* Big hammer */
1475 if (!ha->flags.host_shutting_down &&
1476 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
1477 qlt_disable_vha(vha);
1478
1479 /* Wait for sessions to clear out (just in case) */
1480 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1481 return 0;
1482 }
1483 EXPORT_SYMBOL(qlt_stop_phase1);
1484
1485 /* Called by tcm_qla2xxx configfs code */
1486 void qlt_stop_phase2(struct qla_tgt *tgt)
1487 {
1488 struct qla_hw_data *ha = tgt->ha;
1489 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1490 unsigned long flags;
1491
1492 if (tgt->tgt_stopped) {
1493 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1494 "Already in tgt->tgt_stopped state\n");
1495 dump_stack();
1496 return;
1497 }
1498
1499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1500 "Waiting for %d IRQ commands to complete (tgt %p)",
1501 tgt->irq_cmd_count, tgt);
1502
1503 mutex_lock(&vha->vha_tgt.tgt_mutex);
1504 spin_lock_irqsave(&ha->hardware_lock, flags);
1505 while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) {
1506 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1507 udelay(2);
1508 spin_lock_irqsave(&ha->hardware_lock, flags);
1509 }
1510 tgt->tgt_stop = 0;
1511 tgt->tgt_stopped = 1;
1512 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1513 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1514
1515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
1516 tgt);
1517 }
1518 EXPORT_SYMBOL(qlt_stop_phase2);
1519
1520 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1521 static void qlt_release(struct qla_tgt *tgt)
1522 {
1523 scsi_qla_host_t *vha = tgt->vha;
1524
1525 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
1526 qlt_stop_phase2(tgt);
1527
1528 vha->vha_tgt.qla_tgt = NULL;
1529
1530 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1531 "Release of tgt %p finished\n", tgt);
1532
1533 kfree(tgt);
1534 }
1535
1536 /* ha->hardware_lock supposed to be held on entry */
1537 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1538 const void *param, unsigned int param_size)
1539 {
1540 struct qla_tgt_sess_work_param *prm;
1541 unsigned long flags;
1542
1543 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1544 if (!prm) {
1545 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1546 "qla_target(%d): Unable to create session "
1547 "work, command will be refused", 0);
1548 return -ENOMEM;
1549 }
1550
1551 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1552 "Scheduling work (type %d, prm %p)"
1553 " to find session for param %p (size %d, tgt %p)\n",
1554 type, prm, param, param_size, tgt);
1555
1556 prm->type = type;
1557 memcpy(&prm->tm_iocb, param, param_size);
1558
1559 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1560 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1561 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1562
1563 schedule_work(&tgt->sess_work);
1564
1565 return 0;
1566 }
1567
1568 /*
1569 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1570 */
1571 static void qlt_send_notify_ack(struct scsi_qla_host *vha,
1572 struct imm_ntfy_from_isp *ntfy,
1573 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1574 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1575 {
1576 struct qla_hw_data *ha = vha->hw;
1577 request_t *pkt;
1578 struct nack_to_isp *nack;
1579
1580 if (!ha->flags.fw_started)
1581 return;
1582
1583 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1584
1585 /* Send marker if required */
1586 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1587 return;
1588
1589 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1590 if (!pkt) {
1591 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1592 "qla_target(%d): %s failed: unable to allocate "
1593 "request packet\n", vha->vp_idx, __func__);
1594 return;
1595 }
1596
1597 if (vha->vha_tgt.qla_tgt != NULL)
1598 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1599
1600 pkt->entry_type = NOTIFY_ACK_TYPE;
1601 pkt->entry_count = 1;
1602
1603 nack = (struct nack_to_isp *)pkt;
1604 nack->ox_id = ntfy->ox_id;
1605
1606 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
1607 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1608 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1609 nack->u.isp24.flags = ntfy->u.isp24.flags &
1610 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1611 }
1612 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1613 nack->u.isp24.status = ntfy->u.isp24.status;
1614 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1615 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1616 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1617 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1618 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1619 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1620 nack->u.isp24.srr_reject_code = srr_reject_code;
1621 nack->u.isp24.srr_reject_code_expl = srr_explan;
1622 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1623
1624 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1625 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1626 vha->vp_idx, nack->u.isp24.status);
1627
1628 /* Memory Barrier */
1629 wmb();
1630 qla2x00_start_iocbs(vha, vha->req);
1631 }
1632
1633 /*
1634 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1635 */
1636 static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1637 struct abts_recv_from_24xx *abts, uint32_t status,
1638 bool ids_reversed)
1639 {
1640 struct qla_hw_data *ha = vha->hw;
1641 struct abts_resp_to_24xx *resp;
1642 uint32_t f_ctl;
1643 uint8_t *p;
1644
1645 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1646 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1647 ha, abts, status);
1648
1649 /* Send marker if required */
1650 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1651 return;
1652
1653 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
1654 if (!resp) {
1655 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1656 "qla_target(%d): %s failed: unable to allocate "
1657 "request packet", vha->vp_idx, __func__);
1658 return;
1659 }
1660
1661 resp->entry_type = ABTS_RESP_24XX;
1662 resp->entry_count = 1;
1663 resp->nport_handle = abts->nport_handle;
1664 resp->vp_index = vha->vp_idx;
1665 resp->sof_type = abts->sof_type;
1666 resp->exchange_address = abts->exchange_address;
1667 resp->fcp_hdr_le = abts->fcp_hdr_le;
1668 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1669 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1670 F_CTL_SEQ_INITIATIVE);
1671 p = (uint8_t *)&f_ctl;
1672 resp->fcp_hdr_le.f_ctl[0] = *p++;
1673 resp->fcp_hdr_le.f_ctl[1] = *p++;
1674 resp->fcp_hdr_le.f_ctl[2] = *p;
1675 if (ids_reversed) {
1676 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1677 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1678 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1679 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1680 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1681 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1682 } else {
1683 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1684 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1685 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1686 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1687 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1688 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1689 }
1690 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1691 if (status == FCP_TMF_CMPL) {
1692 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1693 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1694 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1695 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1696 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1697 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1698 } else {
1699 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1700 resp->payload.ba_rjt.reason_code =
1701 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1702 /* Other bytes are zero */
1703 }
1704
1705 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1706
1707 /* Memory Barrier */
1708 wmb();
1709 qla2x00_start_iocbs(vha, vha->req);
1710 }
1711
1712 /*
1713 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1714 */
1715 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1716 struct abts_resp_from_24xx_fw *entry)
1717 {
1718 struct ctio7_to_24xx *ctio;
1719
1720 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1721 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1722 /* Send marker if required */
1723 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1724 return;
1725
1726 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
1727 if (ctio == NULL) {
1728 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1729 "qla_target(%d): %s failed: unable to allocate "
1730 "request packet\n", vha->vp_idx, __func__);
1731 return;
1732 }
1733
1734 /*
1735 * We've got on entrance firmware's response on by us generated
1736 * ABTS response. So, in it ID fields are reversed.
1737 */
1738
1739 ctio->entry_type = CTIO_TYPE7;
1740 ctio->entry_count = 1;
1741 ctio->nport_handle = entry->nport_handle;
1742 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1743 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1744 ctio->vp_index = vha->vp_idx;
1745 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1746 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1747 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1748 ctio->exchange_addr = entry->exchange_addr_to_abort;
1749 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1750 CTIO7_FLAGS_TERMINATE);
1751 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
1752
1753 /* Memory Barrier */
1754 wmb();
1755 qla2x00_start_iocbs(vha, vha->req);
1756
1757 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1758 FCP_TMF_CMPL, true);
1759 }
1760
1761 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1762 {
1763 struct qla_tgt_sess_op *op;
1764 struct qla_tgt_cmd *cmd;
1765
1766 spin_lock(&vha->cmd_list_lock);
1767
1768 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1769 if (tag == op->atio.u.isp24.exchange_addr) {
1770 op->aborted = true;
1771 spin_unlock(&vha->cmd_list_lock);
1772 return 1;
1773 }
1774 }
1775
1776 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1777 if (tag == op->atio.u.isp24.exchange_addr) {
1778 op->aborted = true;
1779 spin_unlock(&vha->cmd_list_lock);
1780 return 1;
1781 }
1782 }
1783
1784 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1785 if (tag == cmd->atio.u.isp24.exchange_addr) {
1786 cmd->aborted = 1;
1787 spin_unlock(&vha->cmd_list_lock);
1788 return 1;
1789 }
1790 }
1791
1792 spin_unlock(&vha->cmd_list_lock);
1793 return 0;
1794 }
1795
1796 /* drop cmds for the given lun
1797 * XXX only looks for cmds on the port through which lun reset was recieved
1798 * XXX does not go through the list of other port (which may have cmds
1799 * for the same lun)
1800 */
1801 static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1802 uint32_t lun, uint8_t *s_id)
1803 {
1804 struct qla_tgt_sess_op *op;
1805 struct qla_tgt_cmd *cmd;
1806 uint32_t key;
1807
1808 key = sid_to_key(s_id);
1809 spin_lock(&vha->cmd_list_lock);
1810 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1811 uint32_t op_key;
1812 uint32_t op_lun;
1813
1814 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1815 op_lun = scsilun_to_int(
1816 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1817 if (op_key == key && op_lun == lun)
1818 op->aborted = true;
1819 }
1820
1821 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1822 uint32_t op_key;
1823 u64 op_lun;
1824
1825 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1826 op_lun = scsilun_to_int(
1827 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1828 if (op_key == key && op_lun == lun)
1829 op->aborted = true;
1830 }
1831
1832 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1833 uint32_t cmd_key;
1834 uint32_t cmd_lun;
1835
1836 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1837 cmd_lun = scsilun_to_int(
1838 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1839 if (cmd_key == key && cmd_lun == lun)
1840 cmd->aborted = 1;
1841 }
1842 spin_unlock(&vha->cmd_list_lock);
1843 }
1844
1845 /* ha->hardware_lock supposed to be held on entry */
1846 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1847 struct abts_recv_from_24xx *abts, struct fc_port *sess)
1848 {
1849 struct qla_hw_data *ha = vha->hw;
1850 struct se_session *se_sess = sess->se_sess;
1851 struct qla_tgt_mgmt_cmd *mcmd;
1852 struct se_cmd *se_cmd;
1853 u32 lun = 0;
1854 int rc;
1855 bool found_lun = false;
1856 unsigned long flags;
1857
1858 spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
1859 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1860 struct qla_tgt_cmd *cmd =
1861 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1862 if (se_cmd->tag == abts->exchange_addr_to_abort) {
1863 lun = cmd->unpacked_lun;
1864 found_lun = true;
1865 break;
1866 }
1867 }
1868 spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
1869
1870 /* cmd not in LIO lists, look in qla list */
1871 if (!found_lun) {
1872 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1873 /* send TASK_ABORT response immediately */
1874 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
1875 return 0;
1876 } else {
1877 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
1878 "unable to find cmd in driver or LIO for tag 0x%x\n",
1879 abts->exchange_addr_to_abort);
1880 return -ENOENT;
1881 }
1882 }
1883
1884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1885 "qla_target(%d): task abort (tag=%d)\n",
1886 vha->vp_idx, abts->exchange_addr_to_abort);
1887
1888 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1889 if (mcmd == NULL) {
1890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1891 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1892 vha->vp_idx, __func__);
1893 return -ENOMEM;
1894 }
1895 memset(mcmd, 0, sizeof(*mcmd));
1896
1897 mcmd->sess = sess;
1898 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1899 mcmd->reset_count = vha->hw->chip_reset;
1900 mcmd->tmr_func = QLA_TGT_ABTS;
1901
1902 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func,
1903 abts->exchange_addr_to_abort);
1904 if (rc != 0) {
1905 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1906 "qla_target(%d): tgt_ops->handle_tmr()"
1907 " failed: %d", vha->vp_idx, rc);
1908 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1909 return -EFAULT;
1910 }
1911
1912 return 0;
1913 }
1914
1915 /*
1916 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1917 */
1918 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1919 struct abts_recv_from_24xx *abts)
1920 {
1921 struct qla_hw_data *ha = vha->hw;
1922 struct fc_port *sess;
1923 uint32_t tag = abts->exchange_addr_to_abort;
1924 uint8_t s_id[3];
1925 int rc;
1926 unsigned long flags;
1927
1928 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1930 "qla_target(%d): ABTS: Abort Sequence not "
1931 "supported\n", vha->vp_idx);
1932 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1933 return;
1934 }
1935
1936 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1938 "qla_target(%d): ABTS: Unknown Exchange "
1939 "Address received\n", vha->vp_idx);
1940 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1941 return;
1942 }
1943
1944 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1945 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1946 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1947 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1948 le32_to_cpu(abts->fcp_hdr_le.parameter));
1949
1950 s_id[0] = abts->fcp_hdr_le.s_id[2];
1951 s_id[1] = abts->fcp_hdr_le.s_id[1];
1952 s_id[2] = abts->fcp_hdr_le.s_id[0];
1953
1954 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1955 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1956 if (!sess) {
1957 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1958 "qla_target(%d): task abort for non-existant session\n",
1959 vha->vp_idx);
1960 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
1961 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1962
1963 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1964
1965 if (rc != 0) {
1966 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1967 false);
1968 }
1969 return;
1970 }
1971 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1972
1973
1974 if (sess->deleted) {
1975 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1976 return;
1977 }
1978
1979 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1980 if (rc != 0) {
1981 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1982 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1983 vha->vp_idx, rc);
1984 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1985 return;
1986 }
1987 }
1988
1989 /*
1990 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1991 */
1992 static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1993 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1994 {
1995 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1996 struct ctio7_to_24xx *ctio;
1997 uint16_t temp;
1998
1999 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2000 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2001 ha, atio, resp_code);
2002
2003 /* Send marker if required */
2004 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
2005 return;
2006
2007 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
2008 if (ctio == NULL) {
2009 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2010 "qla_target(%d): %s failed: unable to allocate "
2011 "request packet\n", ha->vp_idx, __func__);
2012 return;
2013 }
2014
2015 ctio->entry_type = CTIO_TYPE7;
2016 ctio->entry_count = 1;
2017 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2018 ctio->nport_handle = mcmd->sess->loop_id;
2019 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2020 ctio->vp_index = ha->vp_idx;
2021 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2022 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2023 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2024 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2025 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
2026 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
2027 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2028 ctio->u.status1.ox_id = cpu_to_le16(temp);
2029 ctio->u.status1.scsi_status =
2030 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2031 ctio->u.status1.response_len = cpu_to_le16(8);
2032 ctio->u.status1.sense_data[0] = resp_code;
2033
2034 /* Memory Barrier */
2035 wmb();
2036 qla2x00_start_iocbs(ha, ha->req);
2037 }
2038
2039 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2040 {
2041 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2042 }
2043 EXPORT_SYMBOL(qlt_free_mcmd);
2044
2045 /*
2046 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2047 * reacquire
2048 */
2049 void qlt_send_resp_ctio(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
2050 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2051 {
2052 struct atio_from_isp *atio = &cmd->atio;
2053 struct ctio7_to_24xx *ctio;
2054 uint16_t temp;
2055
2056 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2057 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2058 "sense_key=%02x, asc=%02x, ascq=%02x",
2059 vha, atio, scsi_status, sense_key, asc, ascq);
2060
2061 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2062 if (!ctio) {
2063 ql_dbg(ql_dbg_async, vha, 0x3067,
2064 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2065 vha->host_no, __func__);
2066 goto out;
2067 }
2068
2069 ctio->entry_type = CTIO_TYPE7;
2070 ctio->entry_count = 1;
2071 ctio->handle = QLA_TGT_SKIP_HANDLE;
2072 ctio->nport_handle = cmd->sess->loop_id;
2073 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2074 ctio->vp_index = vha->vp_idx;
2075 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2076 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2077 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2078 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2079 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
2080 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
2081 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2082 ctio->u.status1.ox_id = cpu_to_le16(temp);
2083 ctio->u.status1.scsi_status =
2084 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2085 ctio->u.status1.response_len = cpu_to_le16(18);
2086 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2087
2088 if (ctio->u.status1.residual != 0)
2089 ctio->u.status1.scsi_status |=
2090 cpu_to_le16(SS_RESIDUAL_UNDER);
2091
2092 /* Response code and sense key */
2093 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2094 (&ctio->u.status1.sense_data)[0]);
2095 /* Additional sense length */
2096 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2097 /* ASC and ASCQ */
2098 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2099 (&ctio->u.status1.sense_data)[3]);
2100
2101 /* Memory Barrier */
2102 wmb();
2103
2104 qla2x00_start_iocbs(vha, vha->req);
2105 out:
2106 return;
2107 }
2108
2109 /* callback from target fabric module code */
2110 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2111 {
2112 struct scsi_qla_host *vha = mcmd->sess->vha;
2113 struct qla_hw_data *ha = vha->hw;
2114 unsigned long flags;
2115
2116 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2117 "TM response mcmd (%p) status %#x state %#x",
2118 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2119
2120 spin_lock_irqsave(&ha->hardware_lock, flags);
2121
2122 if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) {
2123 /*
2124 * Either the port is not online or this request was from
2125 * previous life, just abort the processing.
2126 */
2127 ql_dbg(ql_dbg_async, vha, 0xe100,
2128 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2129 vha->flags.online, qla2x00_reset_active(vha),
2130 mcmd->reset_count, ha->chip_reset);
2131 ha->tgt.tgt_ops->free_mcmd(mcmd);
2132 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2133 return;
2134 }
2135
2136 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2137 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2138 ELS_LOGO ||
2139 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2140 ELS_PRLO ||
2141 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2142 ELS_TPRLO) {
2143 ql_dbg(ql_dbg_disc, vha, 0xffff,
2144 "TM response logo %phC status %#x state %#x",
2145 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2146 mcmd->flags);
2147 qlt_schedule_sess_for_deletion_lock(mcmd->sess);
2148 } else {
2149 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
2150 0, 0, 0, 0, 0, 0);
2151 }
2152 } else {
2153 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
2154 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
2155 mcmd->fc_tm_rsp, false);
2156 else
2157 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
2158 mcmd->fc_tm_rsp);
2159 }
2160 /*
2161 * Make the callback for ->free_mcmd() to queue_work() and invoke
2162 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2163 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2164 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2165 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2166 * qlt_xmit_tm_rsp() returns here..
2167 */
2168 ha->tgt.tgt_ops->free_mcmd(mcmd);
2169 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2170 }
2171 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2172
2173 /* No locks */
2174 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2175 {
2176 struct qla_tgt_cmd *cmd = prm->cmd;
2177
2178 BUG_ON(cmd->sg_cnt == 0);
2179
2180 prm->sg = (struct scatterlist *)cmd->sg;
2181 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
2182 cmd->sg_cnt, cmd->dma_data_direction);
2183 if (unlikely(prm->seg_cnt == 0))
2184 goto out_err;
2185
2186 prm->cmd->sg_mapped = 1;
2187
2188 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2189 /*
2190 * If greater than four sg entries then we need to allocate
2191 * the continuation entries
2192 */
2193 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
2194 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2195 prm->tgt->datasegs_per_cmd,
2196 prm->tgt->datasegs_per_cont);
2197 } else {
2198 /* DIF */
2199 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2200 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2201 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2202 prm->tot_dsds = prm->seg_cnt;
2203 } else
2204 prm->tot_dsds = prm->seg_cnt;
2205
2206 if (cmd->prot_sg_cnt) {
2207 prm->prot_sg = cmd->prot_sg;
2208 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
2209 cmd->prot_sg, cmd->prot_sg_cnt,
2210 cmd->dma_data_direction);
2211 if (unlikely(prm->prot_seg_cnt == 0))
2212 goto out_err;
2213
2214 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2215 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2216 /* Dif Bundling not support here */
2217 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2218 cmd->blk_sz);
2219 prm->tot_dsds += prm->prot_seg_cnt;
2220 } else
2221 prm->tot_dsds += prm->prot_seg_cnt;
2222 }
2223 }
2224
2225 return 0;
2226
2227 out_err:
2228 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
2229 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2230 0, prm->cmd->sg_cnt);
2231 return -1;
2232 }
2233
2234 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2235 {
2236 struct qla_hw_data *ha = vha->hw;
2237
2238 if (!cmd->sg_mapped)
2239 return;
2240
2241 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
2242 cmd->sg_mapped = 0;
2243
2244 if (cmd->prot_sg_cnt)
2245 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
2246 cmd->dma_data_direction);
2247
2248 if (!cmd->ctx)
2249 return;
2250
2251 if (cmd->ctx_dsd_alloced)
2252 qla2x00_clean_dsd_pool(ha, cmd->ctx);
2253
2254 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2255 }
2256
2257 static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
2258 uint32_t req_cnt)
2259 {
2260 uint32_t cnt, cnt_in;
2261
2262 if (vha->req->cnt < (req_cnt + 2)) {
2263 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
2264 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
2265
2266 if (vha->req->ring_index < cnt)
2267 vha->req->cnt = cnt - vha->req->ring_index;
2268 else
2269 vha->req->cnt = vha->req->length -
2270 (vha->req->ring_index - cnt);
2271
2272 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
2273 ql_dbg(ql_dbg_io, vha, 0x305a,
2274 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n",
2275 vha->vp_idx, vha->req->ring_index,
2276 vha->req->cnt, req_cnt, cnt, cnt_in,
2277 vha->req->length);
2278 return -EAGAIN;
2279 }
2280 }
2281
2282 vha->req->cnt -= req_cnt;
2283
2284 return 0;
2285 }
2286
2287 /*
2288 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2289 */
2290 static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
2291 {
2292 /* Adjust ring index. */
2293 vha->req->ring_index++;
2294 if (vha->req->ring_index == vha->req->length) {
2295 vha->req->ring_index = 0;
2296 vha->req->ring_ptr = vha->req->ring;
2297 } else {
2298 vha->req->ring_ptr++;
2299 }
2300 return (cont_entry_t *)vha->req->ring_ptr;
2301 }
2302
2303 /* ha->hardware_lock supposed to be held on entry */
2304 static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
2305 {
2306 struct qla_hw_data *ha = vha->hw;
2307 uint32_t h;
2308
2309 h = ha->tgt.current_handle;
2310 /* always increment cmd handle */
2311 do {
2312 ++h;
2313 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2314 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
2315 if (h == ha->tgt.current_handle) {
2316 ql_dbg(ql_dbg_io, vha, 0x305b,
2317 "qla_target(%d): Ran out of "
2318 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
2319 h = QLA_TGT_NULL_HANDLE;
2320 break;
2321 }
2322 } while ((h == QLA_TGT_NULL_HANDLE) ||
2323 (h == QLA_TGT_SKIP_HANDLE) ||
2324 (ha->tgt.cmds[h-1] != NULL));
2325
2326 if (h != QLA_TGT_NULL_HANDLE)
2327 ha->tgt.current_handle = h;
2328
2329 return h;
2330 }
2331
2332 /* ha->hardware_lock supposed to be held on entry */
2333 static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
2334 struct scsi_qla_host *vha)
2335 {
2336 uint32_t h;
2337 struct ctio7_to_24xx *pkt;
2338 struct qla_hw_data *ha = vha->hw;
2339 struct atio_from_isp *atio = &prm->cmd->atio;
2340 uint16_t temp;
2341
2342 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
2343 prm->pkt = pkt;
2344 memset(pkt, 0, sizeof(*pkt));
2345
2346 pkt->entry_type = CTIO_TYPE7;
2347 pkt->entry_count = (uint8_t)prm->req_cnt;
2348 pkt->vp_index = vha->vp_idx;
2349
2350 h = qlt_make_handle(vha);
2351 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2352 /*
2353 * CTIO type 7 from the firmware doesn't provide a way to
2354 * know the initiator's LOOP ID, hence we can't find
2355 * the session and, so, the command.
2356 */
2357 return -EAGAIN;
2358 } else
2359 ha->tgt.cmds[h - 1] = prm->cmd;
2360
2361 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2362 pkt->nport_handle = prm->cmd->loop_id;
2363 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2364 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2365 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2366 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2367 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2368 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
2369 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2370 pkt->u.status0.ox_id = cpu_to_le16(temp);
2371 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2372
2373 return 0;
2374 }
2375
2376 /*
2377 * ha->hardware_lock supposed to be held on entry. We have already made sure
2378 * that there is sufficient amount of request entries to not drop it.
2379 */
2380 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
2381 struct scsi_qla_host *vha)
2382 {
2383 int cnt;
2384 uint32_t *dword_ptr;
2385 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2386
2387 /* Build continuation packets */
2388 while (prm->seg_cnt > 0) {
2389 cont_a64_entry_t *cont_pkt64 =
2390 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
2391
2392 /*
2393 * Make sure that from cont_pkt64 none of
2394 * 64-bit specific fields used for 32-bit
2395 * addressing. Cast to (cont_entry_t *) for
2396 * that.
2397 */
2398
2399 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2400
2401 cont_pkt64->entry_count = 1;
2402 cont_pkt64->sys_define = 0;
2403
2404 if (enable_64bit_addressing) {
2405 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2406 dword_ptr =
2407 (uint32_t *)&cont_pkt64->dseg_0_address;
2408 } else {
2409 cont_pkt64->entry_type = CONTINUE_TYPE;
2410 dword_ptr =
2411 (uint32_t *)&((cont_entry_t *)
2412 cont_pkt64)->dseg_0_address;
2413 }
2414
2415 /* Load continuation entry data segments */
2416 for (cnt = 0;
2417 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
2418 cnt++, prm->seg_cnt--) {
2419 *dword_ptr++ =
2420 cpu_to_le32(pci_dma_lo32
2421 (sg_dma_address(prm->sg)));
2422 if (enable_64bit_addressing) {
2423 *dword_ptr++ =
2424 cpu_to_le32(pci_dma_hi32
2425 (sg_dma_address
2426 (prm->sg)));
2427 }
2428 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2429
2430 prm->sg = sg_next(prm->sg);
2431 }
2432 }
2433 }
2434
2435 /*
2436 * ha->hardware_lock supposed to be held on entry. We have already made sure
2437 * that there is sufficient amount of request entries to not drop it.
2438 */
2439 static void qlt_load_data_segments(struct qla_tgt_prm *prm,
2440 struct scsi_qla_host *vha)
2441 {
2442 int cnt;
2443 uint32_t *dword_ptr;
2444 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2445 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2446
2447 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2448
2449 /* Setup packet address segment pointer */
2450 dword_ptr = pkt24->u.status0.dseg_0_address;
2451
2452 /* Set total data segment count */
2453 if (prm->seg_cnt)
2454 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2455
2456 if (prm->seg_cnt == 0) {
2457 /* No data transfer */
2458 *dword_ptr++ = 0;
2459 *dword_ptr = 0;
2460 return;
2461 }
2462
2463 /* If scatter gather */
2464
2465 /* Load command entry data segments */
2466 for (cnt = 0;
2467 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
2468 cnt++, prm->seg_cnt--) {
2469 *dword_ptr++ =
2470 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2471 if (enable_64bit_addressing) {
2472 *dword_ptr++ =
2473 cpu_to_le32(pci_dma_hi32(
2474 sg_dma_address(prm->sg)));
2475 }
2476 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2477
2478 prm->sg = sg_next(prm->sg);
2479 }
2480
2481 qlt_load_cont_data_segments(prm, vha);
2482 }
2483
2484 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2485 {
2486 return cmd->bufflen > 0;
2487 }
2488
2489 static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2490 {
2491 struct qla_tgt_cmd *cmd;
2492 struct scsi_qla_host *vha;
2493
2494 /* asc 0x10=dif error */
2495 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2496 cmd = prm->cmd;
2497 vha = cmd->vha;
2498 /* ASCQ */
2499 switch (prm->sense_buffer[13]) {
2500 case 1:
2501 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
2502 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2503 "se_cmd=%p tag[%x]",
2504 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2505 cmd->atio.u.isp24.exchange_addr);
2506 break;
2507 case 2:
2508 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
2509 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2510 "se_cmd=%p tag[%x]",
2511 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2512 cmd->atio.u.isp24.exchange_addr);
2513 break;
2514 case 3:
2515 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
2516 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2517 "se_cmd=%p tag[%x]",
2518 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2519 cmd->atio.u.isp24.exchange_addr);
2520 break;
2521 default:
2522 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
2523 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2524 "se_cmd=%p tag[%x]",
2525 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2526 cmd->atio.u.isp24.exchange_addr);
2527 break;
2528 }
2529 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xffff, cmd->cdb, 16);
2530 }
2531 }
2532
2533 /*
2534 * Called without ha->hardware_lock held
2535 */
2536 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2537 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2538 uint32_t *full_req_cnt)
2539 {
2540 struct qla_tgt *tgt = cmd->tgt;
2541 struct scsi_qla_host *vha = tgt->vha;
2542 struct qla_hw_data *ha = vha->hw;
2543 struct se_cmd *se_cmd = &cmd->se_cmd;
2544
2545 prm->cmd = cmd;
2546 prm->tgt = tgt;
2547 prm->rq_result = scsi_status;
2548 prm->sense_buffer = &cmd->sense_buffer[0];
2549 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2550 prm->sg = NULL;
2551 prm->seg_cnt = -1;
2552 prm->req_cnt = 1;
2553 prm->add_status_pkt = 0;
2554
2555 /* Send marker if required */
2556 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2557 return -EFAULT;
2558
2559 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2560 if (qlt_pci_map_calc_cnt(prm) != 0)
2561 return -EAGAIN;
2562 }
2563
2564 *full_req_cnt = prm->req_cnt;
2565
2566 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2567 prm->residual = se_cmd->residual_count;
2568 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
2569 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2570 prm->residual, se_cmd->tag,
2571 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2572 cmd->bufflen, prm->rq_result);
2573 prm->rq_result |= SS_RESIDUAL_UNDER;
2574 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2575 prm->residual = se_cmd->residual_count;
2576 ql_dbg(ql_dbg_io, vha, 0x305d,
2577 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2578 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2579 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2580 prm->rq_result |= SS_RESIDUAL_OVER;
2581 }
2582
2583 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2584 /*
2585 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2586 * ignored in *xmit_response() below
2587 */
2588 if (qlt_has_data(cmd)) {
2589 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2590 (IS_FWI2_CAPABLE(ha) &&
2591 (prm->rq_result != 0))) {
2592 prm->add_status_pkt = 1;
2593 (*full_req_cnt)++;
2594 }
2595 }
2596 }
2597
2598 return 0;
2599 }
2600
2601 static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
2602 struct qla_tgt_cmd *cmd, int sending_sense)
2603 {
2604 if (ha->tgt.enable_class_2)
2605 return 0;
2606
2607 if (sending_sense)
2608 return cmd->conf_compl_supported;
2609 else
2610 return ha->tgt.enable_explicit_conf &&
2611 cmd->conf_compl_supported;
2612 }
2613
2614 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2615 struct qla_tgt_prm *prm)
2616 {
2617 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2618 (uint32_t)sizeof(ctio->u.status1.sense_data));
2619 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2620 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
2621 ctio->u.status0.flags |= cpu_to_le16(
2622 CTIO7_FLAGS_EXPLICIT_CONFORM |
2623 CTIO7_FLAGS_CONFORM_REQ);
2624 }
2625 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2626 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2627 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2628 int i;
2629
2630 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
2631 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2632 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
2633 "Skipping EXPLICIT_CONFORM and "
2634 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2635 "non GOOD status\n");
2636 goto skip_explict_conf;
2637 }
2638 ctio->u.status1.flags |= cpu_to_le16(
2639 CTIO7_FLAGS_EXPLICIT_CONFORM |
2640 CTIO7_FLAGS_CONFORM_REQ);
2641 }
2642 skip_explict_conf:
2643 ctio->u.status1.flags &=
2644 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2645 ctio->u.status1.flags |=
2646 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2647 ctio->u.status1.scsi_status |=
2648 cpu_to_le16(SS_SENSE_LEN_VALID);
2649 ctio->u.status1.sense_length =
2650 cpu_to_le16(prm->sense_buffer_len);
2651 for (i = 0; i < prm->sense_buffer_len/4; i++)
2652 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2653 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2654
2655 qlt_print_dif_err(prm);
2656
2657 } else {
2658 ctio->u.status1.flags &=
2659 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2660 ctio->u.status1.flags |=
2661 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2662 ctio->u.status1.sense_length = 0;
2663 memset(ctio->u.status1.sense_data, 0,
2664 sizeof(ctio->u.status1.sense_data));
2665 }
2666
2667 /* Sense with len > 24, is it possible ??? */
2668 }
2669
2670 static inline int
2671 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2672 {
2673 switch (se_cmd->prot_op) {
2674 case TARGET_PROT_DOUT_INSERT:
2675 case TARGET_PROT_DIN_STRIP:
2676 if (ql2xenablehba_err_chk >= 1)
2677 return 1;
2678 break;
2679 case TARGET_PROT_DOUT_PASS:
2680 case TARGET_PROT_DIN_PASS:
2681 if (ql2xenablehba_err_chk >= 2)
2682 return 1;
2683 break;
2684 case TARGET_PROT_DIN_INSERT:
2685 case TARGET_PROT_DOUT_STRIP:
2686 return 1;
2687 default:
2688 break;
2689 }
2690 return 0;
2691 }
2692
2693 static inline int
2694 qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2695 {
2696 switch (se_cmd->prot_op) {
2697 case TARGET_PROT_DIN_INSERT:
2698 case TARGET_PROT_DOUT_INSERT:
2699 case TARGET_PROT_DIN_STRIP:
2700 case TARGET_PROT_DOUT_STRIP:
2701 case TARGET_PROT_DIN_PASS:
2702 case TARGET_PROT_DOUT_PASS:
2703 return 1;
2704 default:
2705 return 0;
2706 }
2707 return 0;
2708 }
2709
2710 /*
2711 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
2712 */
2713 static void
2714 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2715 uint16_t *pfw_prot_opts)
2716 {
2717 struct se_cmd *se_cmd = &cmd->se_cmd;
2718 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2719 scsi_qla_host_t *vha = cmd->tgt->vha;
2720 struct qla_hw_data *ha = vha->hw;
2721 uint32_t t32 = 0;
2722
2723 /*
2724 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
2725 * have been immplemented by TCM, before AppTag is avail.
2726 * Look for modesense_handlers[]
2727 */
2728 ctx->app_tag = 0;
2729 ctx->app_tag_mask[0] = 0x0;
2730 ctx->app_tag_mask[1] = 0x0;
2731
2732 if (IS_PI_UNINIT_CAPABLE(ha)) {
2733 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2734 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2735 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2736 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2737 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2738 }
2739
2740 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2741
2742 switch (se_cmd->prot_type) {
2743 case TARGET_DIF_TYPE0_PROT:
2744 /*
2745 * No check for ql2xenablehba_err_chk, as it
2746 * would be an I/O error if hba tag generation
2747 * is not done.
2748 */
2749 ctx->ref_tag = cpu_to_le32(lba);
2750 /* enable ALL bytes of the ref tag */
2751 ctx->ref_tag_mask[0] = 0xff;
2752 ctx->ref_tag_mask[1] = 0xff;
2753 ctx->ref_tag_mask[2] = 0xff;
2754 ctx->ref_tag_mask[3] = 0xff;
2755 break;
2756 case TARGET_DIF_TYPE1_PROT:
2757 /*
2758 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2759 * REF tag, and 16 bit app tag.
2760 */
2761 ctx->ref_tag = cpu_to_le32(lba);
2762 if (!qla_tgt_ref_mask_check(se_cmd) ||
2763 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2764 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2765 break;
2766 }
2767 /* enable ALL bytes of the ref tag */
2768 ctx->ref_tag_mask[0] = 0xff;
2769 ctx->ref_tag_mask[1] = 0xff;
2770 ctx->ref_tag_mask[2] = 0xff;
2771 ctx->ref_tag_mask[3] = 0xff;
2772 break;
2773 case TARGET_DIF_TYPE2_PROT:
2774 /*
2775 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2776 * tag has to match LBA in CDB + N
2777 */
2778 ctx->ref_tag = cpu_to_le32(lba);
2779 if (!qla_tgt_ref_mask_check(se_cmd) ||
2780 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2781 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2782 break;
2783 }
2784 /* enable ALL bytes of the ref tag */
2785 ctx->ref_tag_mask[0] = 0xff;
2786 ctx->ref_tag_mask[1] = 0xff;
2787 ctx->ref_tag_mask[2] = 0xff;
2788 ctx->ref_tag_mask[3] = 0xff;
2789 break;
2790 case TARGET_DIF_TYPE3_PROT:
2791 /* For TYPE 3 protection: 16 bit GUARD only */
2792 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2793 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2794 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2795 break;
2796 }
2797 }
2798
2799 static inline int
2800 qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2801 {
2802 uint32_t *cur_dsd;
2803 uint32_t transfer_length = 0;
2804 uint32_t data_bytes;
2805 uint32_t dif_bytes;
2806 uint8_t bundling = 1;
2807 uint8_t *clr_ptr;
2808 struct crc_context *crc_ctx_pkt = NULL;
2809 struct qla_hw_data *ha;
2810 struct ctio_crc2_to_fw *pkt;
2811 dma_addr_t crc_ctx_dma;
2812 uint16_t fw_prot_opts = 0;
2813 struct qla_tgt_cmd *cmd = prm->cmd;
2814 struct se_cmd *se_cmd = &cmd->se_cmd;
2815 uint32_t h;
2816 struct atio_from_isp *atio = &prm->cmd->atio;
2817 struct qla_tc_param tc;
2818 uint16_t t16;
2819
2820 ha = vha->hw;
2821
2822 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2823 prm->pkt = pkt;
2824 memset(pkt, 0, sizeof(*pkt));
2825
2826 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2827 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2828 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2829 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2830
2831 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2832 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2833 bundling = 0;
2834
2835 /* Compute dif len and adjust data len to incude protection */
2836 data_bytes = cmd->bufflen;
2837 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2838
2839 switch (se_cmd->prot_op) {
2840 case TARGET_PROT_DIN_INSERT:
2841 case TARGET_PROT_DOUT_STRIP:
2842 transfer_length = data_bytes;
2843 if (cmd->prot_sg_cnt)
2844 data_bytes += dif_bytes;
2845 break;
2846 case TARGET_PROT_DIN_STRIP:
2847 case TARGET_PROT_DOUT_INSERT:
2848 case TARGET_PROT_DIN_PASS:
2849 case TARGET_PROT_DOUT_PASS:
2850 transfer_length = data_bytes + dif_bytes;
2851 break;
2852 default:
2853 BUG();
2854 break;
2855 }
2856
2857 if (!qlt_hba_err_chk_enabled(se_cmd))
2858 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2859 /* HBA error checking enabled */
2860 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2861 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2862 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2863 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2864 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2865 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2866 }
2867
2868 switch (se_cmd->prot_op) {
2869 case TARGET_PROT_DIN_INSERT:
2870 case TARGET_PROT_DOUT_INSERT:
2871 fw_prot_opts |= PO_MODE_DIF_INSERT;
2872 break;
2873 case TARGET_PROT_DIN_STRIP:
2874 case TARGET_PROT_DOUT_STRIP:
2875 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2876 break;
2877 case TARGET_PROT_DIN_PASS:
2878 case TARGET_PROT_DOUT_PASS:
2879 fw_prot_opts |= PO_MODE_DIF_PASS;
2880 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2881 break;
2882 default:/* Normal Request */
2883 fw_prot_opts |= PO_MODE_DIF_PASS;
2884 break;
2885 }
2886
2887 /* ---- PKT ---- */
2888 /* Update entry type to indicate Command Type CRC_2 IOCB */
2889 pkt->entry_type = CTIO_CRC2;
2890 pkt->entry_count = 1;
2891 pkt->vp_index = vha->vp_idx;
2892
2893 h = qlt_make_handle(vha);
2894 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2895 /*
2896 * CTIO type 7 from the firmware doesn't provide a way to
2897 * know the initiator's LOOP ID, hence we can't find
2898 * the session and, so, the command.
2899 */
2900 return -EAGAIN;
2901 } else
2902 ha->tgt.cmds[h-1] = prm->cmd;
2903
2904 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2905 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2906 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2907 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2908 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2909 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2910 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2911
2912 /* silence compile warning */
2913 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2914 pkt->ox_id = cpu_to_le16(t16);
2915
2916 t16 = (atio->u.isp24.attr << 9);
2917 pkt->flags |= cpu_to_le16(t16);
2918 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2919
2920 /* Set transfer direction */
2921 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2922 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2923 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2924 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2925
2926 pkt->dseg_count = prm->tot_dsds;
2927 /* Fibre channel byte count */
2928 pkt->transfer_length = cpu_to_le32(transfer_length);
2929
2930 /* ----- CRC context -------- */
2931
2932 /* Allocate CRC context from global pool */
2933 crc_ctx_pkt = cmd->ctx =
2934 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2935
2936 if (!crc_ctx_pkt)
2937 goto crc_queuing_error;
2938
2939 /* Zero out CTX area. */
2940 clr_ptr = (uint8_t *)crc_ctx_pkt;
2941 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2942
2943 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2944 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2945
2946 /* Set handle */
2947 crc_ctx_pkt->handle = pkt->handle;
2948
2949 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
2950
2951 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2952 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2953 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2954
2955 if (!bundling) {
2956 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2957 } else {
2958 /*
2959 * Configure Bundling if we need to fetch interlaving
2960 * protection PCI accesses
2961 */
2962 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2963 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2964 crc_ctx_pkt->u.bundling.dseg_count =
2965 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2966 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2967 }
2968
2969 /* Finish the common fields of CRC pkt */
2970 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2971 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2972 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
2973 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
2974
2975 memset((uint8_t *)&tc, 0 , sizeof(tc));
2976 tc.vha = vha;
2977 tc.blk_sz = cmd->blk_sz;
2978 tc.bufflen = cmd->bufflen;
2979 tc.sg = cmd->sg;
2980 tc.prot_sg = cmd->prot_sg;
2981 tc.ctx = crc_ctx_pkt;
2982 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
2983
2984 /* Walks data segments */
2985 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
2986
2987 if (!bundling && prm->prot_seg_cnt) {
2988 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2989 prm->tot_dsds, &tc))
2990 goto crc_queuing_error;
2991 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2992 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
2993 goto crc_queuing_error;
2994
2995 if (bundling && prm->prot_seg_cnt) {
2996 /* Walks dif segments */
2997 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
2998
2999 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3000 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
3001 prm->prot_seg_cnt, &tc))
3002 goto crc_queuing_error;
3003 }
3004 return QLA_SUCCESS;
3005
3006 crc_queuing_error:
3007 /* Cleanup will be performed by the caller */
3008 vha->hw->tgt.cmds[h - 1] = NULL;
3009
3010 return QLA_FUNCTION_FAILED;
3011 }
3012
3013 /*
3014 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3015 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3016 */
3017 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3018 uint8_t scsi_status)
3019 {
3020 struct scsi_qla_host *vha = cmd->vha;
3021 struct qla_hw_data *ha = vha->hw;
3022 struct ctio7_to_24xx *pkt;
3023 struct qla_tgt_prm prm;
3024 uint32_t full_req_cnt = 0;
3025 unsigned long flags = 0;
3026 int res;
3027
3028 spin_lock_irqsave(&ha->hardware_lock, flags);
3029 if (cmd->sess && cmd->sess->deleted) {
3030 cmd->state = QLA_TGT_STATE_PROCESSED;
3031 if (cmd->sess->logout_completed)
3032 /* no need to terminate. FW already freed exchange. */
3033 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3034 else
3035 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
3036 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3037 return 0;
3038 }
3039 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3040
3041 memset(&prm, 0, sizeof(prm));
3042
3043 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
3044 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
3045 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3046 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3047 &cmd->se_cmd);
3048
3049 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3050 &full_req_cnt);
3051 if (unlikely(res != 0)) {
3052 return res;
3053 }
3054
3055 spin_lock_irqsave(&ha->hardware_lock, flags);
3056
3057 if (xmit_type == QLA_TGT_XMIT_STATUS)
3058 vha->tgt_counters.core_qla_snd_status++;
3059 else
3060 vha->tgt_counters.core_qla_que_buf++;
3061
3062 if (!ha->flags.fw_started || cmd->reset_count != ha->chip_reset) {
3063 /*
3064 * Either the port is not online or this request was from
3065 * previous life, just abort the processing.
3066 */
3067 cmd->state = QLA_TGT_STATE_PROCESSED;
3068 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3069 ql_dbg(ql_dbg_async, vha, 0xe101,
3070 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3071 vha->flags.online, qla2x00_reset_active(vha),
3072 cmd->reset_count, ha->chip_reset);
3073 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3074 return 0;
3075 }
3076
3077 /* Does F/W have an IOCBs for this request */
3078 res = qlt_check_reserve_free_req(vha, full_req_cnt);
3079 if (unlikely(res))
3080 goto out_unmap_unlock;
3081
3082 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3083 res = qlt_build_ctio_crc2_pkt(&prm, vha);
3084 else
3085 res = qlt_24xx_build_ctio_pkt(&prm, vha);
3086 if (unlikely(res != 0)) {
3087 vha->req->cnt += full_req_cnt;
3088 goto out_unmap_unlock;
3089 }
3090
3091 pkt = (struct ctio7_to_24xx *)prm.pkt;
3092
3093 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3094 pkt->u.status0.flags |=
3095 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
3096 CTIO7_FLAGS_STATUS_MODE_0);
3097
3098 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3099 qlt_load_data_segments(&prm, vha);
3100
3101 if (prm.add_status_pkt == 0) {
3102 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3103 pkt->u.status0.scsi_status =
3104 cpu_to_le16(prm.rq_result);
3105 pkt->u.status0.residual =
3106 cpu_to_le32(prm.residual);
3107 pkt->u.status0.flags |= cpu_to_le16(
3108 CTIO7_FLAGS_SEND_STATUS);
3109 if (qlt_need_explicit_conf(ha, cmd, 0)) {
3110 pkt->u.status0.flags |=
3111 cpu_to_le16(
3112 CTIO7_FLAGS_EXPLICIT_CONFORM |
3113 CTIO7_FLAGS_CONFORM_REQ);
3114 }
3115 }
3116
3117 } else {
3118 /*
3119 * We have already made sure that there is sufficient
3120 * amount of request entries to not drop HW lock in
3121 * req_pkt().
3122 */
3123 struct ctio7_to_24xx *ctio =
3124 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
3125
3126 ql_dbg(ql_dbg_io, vha, 0x305e,
3127 "Building additional status packet 0x%p.\n",
3128 ctio);
3129
3130 /*
3131 * T10Dif: ctio_crc2_to_fw overlay ontop of
3132 * ctio7_to_24xx
3133 */
3134 memcpy(ctio, pkt, sizeof(*ctio));
3135 /* reset back to CTIO7 */
3136 ctio->entry_count = 1;
3137 ctio->entry_type = CTIO_TYPE7;
3138 ctio->dseg_count = 0;
3139 ctio->u.status1.flags &= ~cpu_to_le16(
3140 CTIO7_FLAGS_DATA_IN);
3141
3142 /* Real finish is ctio_m1's finish */
3143 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
3144 pkt->u.status0.flags |= cpu_to_le16(
3145 CTIO7_FLAGS_DONT_RET_CTIO);
3146
3147 /* qlt_24xx_init_ctio_to_isp will correct
3148 * all neccessary fields that's part of CTIO7.
3149 * There should be no residual of CTIO-CRC2 data.
3150 */
3151 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3152 &prm);
3153 pr_debug("Status CTIO7: %p\n", ctio);
3154 }
3155 } else
3156 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3157
3158
3159 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
3160 cmd->cmd_sent_to_fw = 1;
3161
3162 /* Memory Barrier */
3163 wmb();
3164 qla2x00_start_iocbs(vha, vha->req);
3165 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3166
3167 return 0;
3168
3169 out_unmap_unlock:
3170 qlt_unmap_sg(vha, cmd);
3171 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3172
3173 return res;
3174 }
3175 EXPORT_SYMBOL(qlt_xmit_response);
3176
3177 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3178 {
3179 struct ctio7_to_24xx *pkt;
3180 struct scsi_qla_host *vha = cmd->vha;
3181 struct qla_hw_data *ha = vha->hw;
3182 struct qla_tgt *tgt = cmd->tgt;
3183 struct qla_tgt_prm prm;
3184 unsigned long flags;
3185 int res = 0;
3186
3187 memset(&prm, 0, sizeof(prm));
3188 prm.cmd = cmd;
3189 prm.tgt = tgt;
3190 prm.sg = NULL;
3191 prm.req_cnt = 1;
3192
3193 /* Send marker if required */
3194 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
3195 return -EIO;
3196
3197 /* Calculate number of entries and segments required */
3198 if (qlt_pci_map_calc_cnt(&prm) != 0)
3199 return -EAGAIN;
3200
3201 spin_lock_irqsave(&ha->hardware_lock, flags);
3202
3203 if (!ha->flags.fw_started || (cmd->reset_count != ha->chip_reset) ||
3204 (cmd->sess && cmd->sess->deleted)) {
3205 /*
3206 * Either the port is not online or this request was from
3207 * previous life, just abort the processing.
3208 */
3209 cmd->state = QLA_TGT_STATE_NEED_DATA;
3210 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3211 ql_dbg(ql_dbg_async, vha, 0xe102,
3212 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3213 vha->flags.online, qla2x00_reset_active(vha),
3214 cmd->reset_count, ha->chip_reset);
3215 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3216 return 0;
3217 }
3218
3219 /* Does F/W have an IOCBs for this request */
3220 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
3221 if (res != 0)
3222 goto out_unlock_free_unmap;
3223 if (cmd->se_cmd.prot_op)
3224 res = qlt_build_ctio_crc2_pkt(&prm, vha);
3225 else
3226 res = qlt_24xx_build_ctio_pkt(&prm, vha);
3227
3228 if (unlikely(res != 0)) {
3229 vha->req->cnt += prm.req_cnt;
3230 goto out_unlock_free_unmap;
3231 }
3232
3233 pkt = (struct ctio7_to_24xx *)prm.pkt;
3234 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
3235 CTIO7_FLAGS_STATUS_MODE_0);
3236
3237 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3238 qlt_load_data_segments(&prm, vha);
3239
3240 cmd->state = QLA_TGT_STATE_NEED_DATA;
3241 cmd->cmd_sent_to_fw = 1;
3242
3243 /* Memory Barrier */
3244 wmb();
3245 qla2x00_start_iocbs(vha, vha->req);
3246 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3247
3248 return res;
3249
3250 out_unlock_free_unmap:
3251 qlt_unmap_sg(vha, cmd);
3252 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3253
3254 return res;
3255 }
3256 EXPORT_SYMBOL(qlt_rdy_to_xfer);
3257
3258
3259 /*
3260 * it is assumed either hardware_lock or qpair lock is held.
3261 */
3262 static void
3263 qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
3264 struct ctio_crc_from_fw *sts)
3265 {
3266 uint8_t *ap = &sts->actual_dif[0];
3267 uint8_t *ep = &sts->expected_dif[0];
3268 uint64_t lba = cmd->se_cmd.t_task_lba;
3269 uint8_t scsi_status, sense_key, asc, ascq;
3270 unsigned long flags;
3271
3272 cmd->trc_flags |= TRC_DIF_ERR;
3273
3274 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3275 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3276 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
3277
3278 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3279 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3280 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
3281
3282 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3283 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
3284
3285 scsi_status = sense_key = asc = ascq = 0;
3286
3287 /* check appl tag */
3288 if (cmd->e_app_tag != cmd->a_app_tag) {
3289 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
3290 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] "
3291 "Ref[%x|%x], App[%x|%x], "
3292 "Guard [%x|%x] cmd=%p ox_id[%04x]",
3293 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3294 cmd->a_ref_tag, cmd->e_ref_tag,
3295 cmd->a_app_tag, cmd->e_app_tag,
3296 cmd->a_guard, cmd->e_guard,
3297 cmd, cmd->atio.u.isp24.fcp_hdr.ox_id);
3298
3299 cmd->dif_err_code = DIF_ERR_APP;
3300 scsi_status = SAM_STAT_CHECK_CONDITION;
3301 sense_key = ABORTED_COMMAND;
3302 asc = 0x10;
3303 ascq = 0x2;
3304 }
3305
3306 /* check ref tag */
3307 if (cmd->e_ref_tag != cmd->a_ref_tag) {
3308 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
3309 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] "
3310 "Ref[%x|%x], App[%x|%x], "
3311 "Guard[%x|%x] cmd=%p ox_id[%04x] ",
3312 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3313 cmd->a_ref_tag, cmd->e_ref_tag,
3314 cmd->a_app_tag, cmd->e_app_tag,
3315 cmd->a_guard, cmd->e_guard,
3316 cmd, cmd->atio.u.isp24.fcp_hdr.ox_id);
3317
3318 cmd->dif_err_code = DIF_ERR_REF;
3319 scsi_status = SAM_STAT_CHECK_CONDITION;
3320 sense_key = ABORTED_COMMAND;
3321 asc = 0x10;
3322 ascq = 0x3;
3323 goto out;
3324 }
3325
3326 /* check guard */
3327 if (cmd->e_guard != cmd->a_guard) {
3328 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
3329 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] "
3330 "Ref[%x|%x], App[%x|%x], "
3331 "Guard [%x|%x] cmd=%p ox_id[%04x]",
3332 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3333 cmd->a_ref_tag, cmd->e_ref_tag,
3334 cmd->a_app_tag, cmd->e_app_tag,
3335 cmd->a_guard, cmd->e_guard,
3336 cmd, cmd->atio.u.isp24.fcp_hdr.ox_id);
3337 cmd->dif_err_code = DIF_ERR_GRD;
3338 scsi_status = SAM_STAT_CHECK_CONDITION;
3339 sense_key = ABORTED_COMMAND;
3340 asc = 0x10;
3341 ascq = 0x1;
3342 }
3343 out:
3344 switch (cmd->state) {
3345 case QLA_TGT_STATE_NEED_DATA:
3346 /* handle_data will load DIF error code */
3347 cmd->state = QLA_TGT_STATE_DATA_IN;
3348 vha->hw->tgt.tgt_ops->handle_data(cmd);
3349 break;
3350 default:
3351 spin_lock_irqsave(&cmd->cmd_lock, flags);
3352 if (cmd->aborted) {
3353 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3354 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3355 break;
3356 }
3357 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3358
3359 qlt_send_resp_ctio(vha, cmd, scsi_status, sense_key, asc, ascq);
3360 /* assume scsi status gets out on the wire.
3361 * Will not wait for completion.
3362 */
3363 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3364 break;
3365 }
3366 }
3367
3368 /* If hardware_lock held on entry, might drop it, then reaquire */
3369 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3370 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3371 struct imm_ntfy_from_isp *ntfy)
3372 {
3373 struct nack_to_isp *nack;
3374 struct qla_hw_data *ha = vha->hw;
3375 request_t *pkt;
3376 int ret = 0;
3377
3378 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3379 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3380
3381 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3382 if (pkt == NULL) {
3383 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3384 "qla_target(%d): %s failed: unable to allocate "
3385 "request packet\n", vha->vp_idx, __func__);
3386 return -ENOMEM;
3387 }
3388
3389 pkt->entry_type = NOTIFY_ACK_TYPE;
3390 pkt->entry_count = 1;
3391 pkt->handle = QLA_TGT_SKIP_HANDLE;
3392
3393 nack = (struct nack_to_isp *)pkt;
3394 nack->ox_id = ntfy->ox_id;
3395
3396 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3397 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3398 nack->u.isp24.flags = ntfy->u.isp24.flags &
3399 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3400 }
3401
3402 /* terminate */
3403 nack->u.isp24.flags |=
3404 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3405
3406 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3407 nack->u.isp24.status = ntfy->u.isp24.status;
3408 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3409 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3410 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3411 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3412 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3413 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3414
3415 qla2x00_start_iocbs(vha, vha->req);
3416 return ret;
3417 }
3418
3419 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3420 struct imm_ntfy_from_isp *imm, int ha_locked)
3421 {
3422 unsigned long flags = 0;
3423 int rc;
3424
3425 if (qlt_issue_marker(vha, ha_locked) < 0)
3426 return;
3427
3428 if (ha_locked) {
3429 rc = __qlt_send_term_imm_notif(vha, imm);
3430
3431 #if 0 /* Todo */
3432 if (rc == -ENOMEM)
3433 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3434 #else
3435 if (rc) {
3436 }
3437 #endif
3438 goto done;
3439 }
3440
3441 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3442 rc = __qlt_send_term_imm_notif(vha, imm);
3443
3444 #if 0 /* Todo */
3445 if (rc == -ENOMEM)
3446 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3447 #endif
3448
3449 done:
3450 if (!ha_locked)
3451 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3452 }
3453
3454 /* If hardware_lock held on entry, might drop it, then reaquire */
3455 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3456 static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
3457 struct qla_tgt_cmd *cmd,
3458 struct atio_from_isp *atio)
3459 {
3460 struct ctio7_to_24xx *ctio24;
3461 struct qla_hw_data *ha = vha->hw;
3462 request_t *pkt;
3463 int ret = 0;
3464 uint16_t temp;
3465
3466 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3467
3468 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
3469 if (pkt == NULL) {
3470 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3471 "qla_target(%d): %s failed: unable to allocate "
3472 "request packet\n", vha->vp_idx, __func__);
3473 return -ENOMEM;
3474 }
3475
3476 if (cmd != NULL) {
3477 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3478 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3479 "qla_target(%d): Terminating cmd %p with "
3480 "incorrect state %d\n", vha->vp_idx, cmd,
3481 cmd->state);
3482 } else
3483 ret = 1;
3484 }
3485
3486 vha->tgt_counters.num_term_xchg_sent++;
3487 pkt->entry_count = 1;
3488 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3489
3490 ctio24 = (struct ctio7_to_24xx *)pkt;
3491 ctio24->entry_type = CTIO_TYPE7;
3492 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
3493 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3494 ctio24->vp_index = vha->vp_idx;
3495 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3496 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3497 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3498 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3499 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
3500 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
3501 CTIO7_FLAGS_TERMINATE);
3502 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3503 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3504
3505 /* Most likely, it isn't needed */
3506 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3507 &atio->u.isp24.fcp_cmnd.add_cdb[
3508 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3509 if (ctio24->u.status1.residual != 0)
3510 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3511
3512 /* Memory Barrier */
3513 wmb();
3514 qla2x00_start_iocbs(vha, vha->req);
3515 return ret;
3516 }
3517
3518 static void qlt_send_term_exchange(struct scsi_qla_host *vha,
3519 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3520 int ul_abort)
3521 {
3522 unsigned long flags = 0;
3523 int rc;
3524
3525 if (qlt_issue_marker(vha, ha_locked) < 0)
3526 return;
3527
3528 if (ha_locked) {
3529 rc = __qlt_send_term_exchange(vha, cmd, atio);
3530 if (rc == -ENOMEM)
3531 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3532 goto done;
3533 }
3534 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3535 rc = __qlt_send_term_exchange(vha, cmd, atio);
3536 if (rc == -ENOMEM)
3537 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3538
3539 done:
3540 if (cmd && !ul_abort && !cmd->aborted) {
3541 if (cmd->sg_mapped)
3542 qlt_unmap_sg(vha, cmd);
3543 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3544 }
3545
3546 if (!ha_locked)
3547 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3548
3549 return;
3550 }
3551
3552 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3553 {
3554 struct list_head free_list;
3555 struct qla_tgt_cmd *cmd, *tcmd;
3556
3557 vha->hw->tgt.leak_exchg_thresh_hold =
3558 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3559
3560 cmd = tcmd = NULL;
3561 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3562 INIT_LIST_HEAD(&free_list);
3563 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3564
3565 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3566 list_del(&cmd->cmd_list);
3567 /* This cmd was never sent to TCM. There is no need
3568 * to schedule free or call free_cmd
3569 */
3570 qlt_free_cmd(cmd);
3571 vha->hw->tgt.num_qfull_cmds_alloc--;
3572 }
3573 }
3574 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3575 }
3576
3577 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3578 {
3579 uint32_t total_leaked;
3580
3581 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3582
3583 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3584 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3585
3586 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3587 "Chip reset due to exchange starvation: %d/%d.\n",
3588 total_leaked, vha->hw->cur_fw_xcb_count);
3589
3590 if (IS_P3P_TYPE(vha->hw))
3591 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3592 else
3593 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3594 qla2xxx_wake_dpc(vha);
3595 }
3596
3597 }
3598
3599 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3600 {
3601 struct qla_tgt *tgt = cmd->tgt;
3602 struct scsi_qla_host *vha = tgt->vha;
3603 struct se_cmd *se_cmd = &cmd->se_cmd;
3604 unsigned long flags;
3605
3606 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3607 "qla_target(%d): terminating exchange for aborted cmd=%p "
3608 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3609 se_cmd->tag);
3610
3611 spin_lock_irqsave(&cmd->cmd_lock, flags);
3612 if (cmd->aborted) {
3613 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3614 /*
3615 * It's normal to see 2 calls in this path:
3616 * 1) XFER Rdy completion + CMD_T_ABORT
3617 * 2) TCM TMR - drain_state_list
3618 */
3619 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
3620 "multiple abort. %p transport_state %x, t_state %x,"
3621 " se_cmd_flags %x \n", cmd, cmd->se_cmd.transport_state,
3622 cmd->se_cmd.t_state,cmd->se_cmd.se_cmd_flags);
3623 return EIO;
3624 }
3625 cmd->aborted = 1;
3626 cmd->trc_flags |= TRC_ABORT;
3627 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3628
3629 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1);
3630 return 0;
3631 }
3632 EXPORT_SYMBOL(qlt_abort_cmd);
3633
3634 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3635 {
3636 struct fc_port *sess = cmd->sess;
3637
3638 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3639 "%s: se_cmd[%p] ox_id %04x\n",
3640 __func__, &cmd->se_cmd,
3641 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3642
3643 BUG_ON(cmd->cmd_in_wq);
3644
3645 if (cmd->sg_mapped)
3646 qlt_unmap_sg(cmd->vha, cmd);
3647
3648 if (!cmd->q_full)
3649 qlt_decr_num_pend_cmds(cmd->vha);
3650
3651 BUG_ON(cmd->sg_mapped);
3652 cmd->jiffies_at_free = get_jiffies_64();
3653 if (unlikely(cmd->free_sg))
3654 kfree(cmd->sg);
3655
3656 if (!sess || !sess->se_sess) {
3657 WARN_ON(1);
3658 return;
3659 }
3660 cmd->jiffies_at_free = get_jiffies_64();
3661 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3662 }
3663 EXPORT_SYMBOL(qlt_free_cmd);
3664
3665 /*
3666 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3667 */
3668 static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
3669 struct qla_tgt_cmd *cmd, uint32_t status)
3670 {
3671 int term = 0;
3672
3673 if (cmd->se_cmd.prot_op)
3674 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
3675 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3676 "se_cmd=%p tag[%x] op %#x/%s",
3677 cmd->lba, cmd->lba,
3678 cmd->num_blks, &cmd->se_cmd,
3679 cmd->atio.u.isp24.exchange_addr,
3680 cmd->se_cmd.prot_op,
3681 prot_op_str(cmd->se_cmd.prot_op));
3682
3683 if (ctio != NULL) {
3684 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3685 term = !(c->flags &
3686 cpu_to_le16(OF_TERM_EXCH));
3687 } else
3688 term = 1;
3689
3690 if (term)
3691 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
3692
3693 return term;
3694 }
3695
3696 /* ha->hardware_lock supposed to be held on entry */
3697 static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
3698 uint32_t handle)
3699 {
3700 struct qla_hw_data *ha = vha->hw;
3701
3702 handle--;
3703 if (ha->tgt.cmds[handle] != NULL) {
3704 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
3705 ha->tgt.cmds[handle] = NULL;
3706 return cmd;
3707 } else
3708 return NULL;
3709 }
3710
3711 /* ha->hardware_lock supposed to be held on entry */
3712 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3713 uint32_t handle, void *ctio)
3714 {
3715 struct qla_tgt_cmd *cmd = NULL;
3716
3717 /* Clear out internal marks */
3718 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
3719 CTIO_INTERMEDIATE_HANDLE_MARK);
3720
3721 if (handle != QLA_TGT_NULL_HANDLE) {
3722 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
3723 return NULL;
3724
3725 /* handle-1 is actually used */
3726 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
3727 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3728 "qla_target(%d): Wrong handle %x received\n",
3729 vha->vp_idx, handle);
3730 return NULL;
3731 }
3732 cmd = qlt_get_cmd(vha, handle);
3733 if (unlikely(cmd == NULL)) {
3734 ql_dbg(ql_dbg_tgt, vha, 0xe053,
3735 "qla_target(%d): Suspicious: unable to "
3736 "find the command with handle %x\n", vha->vp_idx,
3737 handle);
3738 return NULL;
3739 }
3740 } else if (ctio != NULL) {
3741 /* We can't get loop ID from CTIO7 */
3742 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3743 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3744 "support NULL handles\n", vha->vp_idx);
3745 return NULL;
3746 }
3747
3748 return cmd;
3749 }
3750
3751 /* hardware_lock should be held by caller. */
3752 static void
3753 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3754 {
3755 struct qla_hw_data *ha = vha->hw;
3756 uint32_t handle;
3757
3758 if (cmd->sg_mapped)
3759 qlt_unmap_sg(vha, cmd);
3760
3761 handle = qlt_make_handle(vha);
3762
3763 /* TODO: fix debug message type and ids. */
3764 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3765 ql_dbg(ql_dbg_io, vha, 0xff00,
3766 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
3767 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3768 cmd->write_data_transferred = 0;
3769 cmd->state = QLA_TGT_STATE_DATA_IN;
3770
3771 ql_dbg(ql_dbg_io, vha, 0xff01,
3772 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
3773
3774 ha->tgt.tgt_ops->handle_data(cmd);
3775 return;
3776 } else {
3777 ql_dbg(ql_dbg_io, vha, 0xff03,
3778 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
3779 cmd->state);
3780 dump_stack();
3781 }
3782
3783 cmd->trc_flags |= TRC_FLUSH;
3784 ha->tgt.tgt_ops->free_cmd(cmd);
3785 }
3786
3787 void
3788 qlt_host_reset_handler(struct qla_hw_data *ha)
3789 {
3790 struct qla_tgt_cmd *cmd;
3791 unsigned long flags;
3792 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
3793 scsi_qla_host_t *vha = NULL;
3794 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
3795 uint32_t i;
3796
3797 if (!base_vha->hw->tgt.tgt_ops)
3798 return;
3799
3800 if (!tgt || qla_ini_mode_enabled(base_vha)) {
3801 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
3802 "Target mode disabled\n");
3803 return;
3804 }
3805
3806 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
3807 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
3808 base_vha->dpc_flags);
3809
3810 spin_lock_irqsave(&ha->hardware_lock, flags);
3811 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
3812 cmd = qlt_get_cmd(base_vha, i);
3813 if (!cmd)
3814 continue;
3815 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
3816 vha = cmd->vha;
3817 qlt_abort_cmd_on_host_reset(vha, cmd);
3818 }
3819 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3820 }
3821
3822
3823 /*
3824 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3825 */
3826 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
3827 uint32_t status, void *ctio)
3828 {
3829 struct qla_hw_data *ha = vha->hw;
3830 struct se_cmd *se_cmd;
3831 struct qla_tgt_cmd *cmd;
3832
3833 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3834 /* That could happen only in case of an error/reset/abort */
3835 if (status != CTIO_SUCCESS) {
3836 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3837 "Intermediate CTIO received"
3838 " (status %x)\n", status);
3839 }
3840 return;
3841 }
3842
3843 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
3844 if (cmd == NULL)
3845 return;
3846
3847 se_cmd = &cmd->se_cmd;
3848 cmd->cmd_sent_to_fw = 0;
3849
3850 qlt_unmap_sg(vha, cmd);
3851
3852 if (unlikely(status != CTIO_SUCCESS)) {
3853 switch (status & 0xFFFF) {
3854 case CTIO_LIP_RESET:
3855 case CTIO_TARGET_RESET:
3856 case CTIO_ABORTED:
3857 /* driver request abort via Terminate exchange */
3858 case CTIO_TIMEOUT:
3859 case CTIO_INVALID_RX_ID:
3860 /* They are OK */
3861 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3862 "qla_target(%d): CTIO with "
3863 "status %#x received, state %x, se_cmd %p, "
3864 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3865 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3866 status, cmd->state, se_cmd);
3867 break;
3868
3869 case CTIO_PORT_LOGGED_OUT:
3870 case CTIO_PORT_UNAVAILABLE:
3871 {
3872 int logged_out =
3873 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3874
3875 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3876 "qla_target(%d): CTIO with %s status %x "
3877 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3878 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
3879 status, cmd->state, se_cmd);
3880
3881 if (logged_out && cmd->sess) {
3882 /*
3883 * Session is already logged out, but we need
3884 * to notify initiator, who's not aware of this
3885 */
3886 cmd->sess->logout_on_delete = 0;
3887 cmd->sess->send_els_logo = 1;
3888 ql_dbg(ql_dbg_disc, vha, 0xffff,
3889 "%s %d %8phC post del sess\n",
3890 __func__, __LINE__, cmd->sess->port_name);
3891
3892 qlt_schedule_sess_for_deletion_lock(cmd->sess);
3893 }
3894 break;
3895 }
3896 case CTIO_DIF_ERROR: {
3897 struct ctio_crc_from_fw *crc =
3898 (struct ctio_crc_from_fw *)ctio;
3899 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3900 "qla_target(%d): CTIO with DIF_ERROR status %x "
3901 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3902 "expect_dif[0x%llx]\n",
3903 vha->vp_idx, status, cmd->state, se_cmd,
3904 *((u64 *)&crc->actual_dif[0]),
3905 *((u64 *)&crc->expected_dif[0]));
3906
3907 qlt_handle_dif_error(vha, cmd, ctio);
3908 return;
3909 }
3910 default:
3911 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
3912 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
3913 vha->vp_idx, status, cmd->state, se_cmd);
3914 break;
3915 }
3916
3917
3918 /* "cmd->aborted" means
3919 * cmd is already aborted/terminated, we don't
3920 * need to terminate again. The exchange is already
3921 * cleaned up/freed at FW level. Just cleanup at driver
3922 * level.
3923 */
3924 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3925 (!cmd->aborted)) {
3926 cmd->trc_flags |= TRC_CTIO_ERR;
3927 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3928 return;
3929 }
3930 }
3931
3932 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3933 cmd->trc_flags |= TRC_CTIO_DONE;
3934 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3935 cmd->state = QLA_TGT_STATE_DATA_IN;
3936
3937 if (status == CTIO_SUCCESS)
3938 cmd->write_data_transferred = 1;
3939
3940 ha->tgt.tgt_ops->handle_data(cmd);
3941 return;
3942 } else if (cmd->aborted) {
3943 cmd->trc_flags |= TRC_CTIO_ABORTED;
3944 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3945 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
3946 } else {
3947 cmd->trc_flags |= TRC_CTIO_STRANGE;
3948 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3949 "qla_target(%d): A command in state (%d) should "
3950 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3951 }
3952
3953 if (unlikely(status != CTIO_SUCCESS) &&
3954 !cmd->aborted) {
3955 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3956 dump_stack();
3957 }
3958
3959 ha->tgt.tgt_ops->free_cmd(cmd);
3960 }
3961
3962 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3963 uint8_t task_codes)
3964 {
3965 int fcp_task_attr;
3966
3967 switch (task_codes) {
3968 case ATIO_SIMPLE_QUEUE:
3969 fcp_task_attr = TCM_SIMPLE_TAG;
3970 break;
3971 case ATIO_HEAD_OF_QUEUE:
3972 fcp_task_attr = TCM_HEAD_TAG;
3973 break;
3974 case ATIO_ORDERED_QUEUE:
3975 fcp_task_attr = TCM_ORDERED_TAG;
3976 break;
3977 case ATIO_ACA_QUEUE:
3978 fcp_task_attr = TCM_ACA_TAG;
3979 break;
3980 case ATIO_UNTAGGED:
3981 fcp_task_attr = TCM_SIMPLE_TAG;
3982 break;
3983 default:
3984 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3985 "qla_target: unknown task code %x, use ORDERED instead\n",
3986 task_codes);
3987 fcp_task_attr = TCM_ORDERED_TAG;
3988 break;
3989 }
3990
3991 return fcp_task_attr;
3992 }
3993
3994 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
3995 uint8_t *);
3996 /*
3997 * Process context for I/O path into tcm_qla2xxx code
3998 */
3999 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
4000 {
4001 scsi_qla_host_t *vha = cmd->vha;
4002 struct qla_hw_data *ha = vha->hw;
4003 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4004 struct fc_port *sess = cmd->sess;
4005 struct atio_from_isp *atio = &cmd->atio;
4006 unsigned char *cdb;
4007 unsigned long flags;
4008 uint32_t data_length;
4009 int ret, fcp_task_attr, data_dir, bidi = 0;
4010
4011 cmd->cmd_in_wq = 0;
4012 cmd->trc_flags |= TRC_DO_WORK;
4013 if (tgt->tgt_stop)
4014 goto out_term;
4015
4016 if (cmd->aborted) {
4017 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4018 "cmd with tag %u is aborted\n",
4019 cmd->atio.u.isp24.exchange_addr);
4020 goto out_term;
4021 }
4022
4023 spin_lock_init(&cmd->cmd_lock);
4024 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
4025 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
4026 cmd->unpacked_lun = scsilun_to_int(
4027 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4028
4029 if (atio->u.isp24.fcp_cmnd.rddata &&
4030 atio->u.isp24.fcp_cmnd.wrdata) {
4031 bidi = 1;
4032 data_dir = DMA_TO_DEVICE;
4033 } else if (atio->u.isp24.fcp_cmnd.rddata)
4034 data_dir = DMA_FROM_DEVICE;
4035 else if (atio->u.isp24.fcp_cmnd.wrdata)
4036 data_dir = DMA_TO_DEVICE;
4037 else
4038 data_dir = DMA_NONE;
4039
4040 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4041 atio->u.isp24.fcp_cmnd.task_attr);
4042 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4043 &atio->u.isp24.fcp_cmnd.add_cdb[
4044 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4045
4046 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4047 fcp_task_attr, data_dir, bidi);
4048 if (ret != 0)
4049 goto out_term;
4050 /*
4051 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4052 */
4053 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4054 ha->tgt.tgt_ops->put_sess(sess);
4055 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4056 return;
4057
4058 out_term:
4059 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
4060 /*
4061 * cmd has not sent to target yet, so pass NULL as the second
4062 * argument to qlt_send_term_exchange() and free the memory here.
4063 */
4064 cmd->trc_flags |= TRC_DO_WORK_ERR;
4065 spin_lock_irqsave(&ha->hardware_lock, flags);
4066 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0);
4067
4068 qlt_decr_num_pend_cmds(vha);
4069 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
4070 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4071
4072 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4073 ha->tgt.tgt_ops->put_sess(sess);
4074 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4075 }
4076
4077 static void qlt_do_work(struct work_struct *work)
4078 {
4079 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
4080 scsi_qla_host_t *vha = cmd->vha;
4081 unsigned long flags;
4082
4083 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4084 list_del(&cmd->cmd_list);
4085 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4086
4087 __qlt_do_work(cmd);
4088 }
4089
4090 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
4091 struct fc_port *sess,
4092 struct atio_from_isp *atio)
4093 {
4094 struct se_session *se_sess = sess->se_sess;
4095 struct qla_tgt_cmd *cmd;
4096 int tag;
4097
4098 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4099 if (tag < 0)
4100 return NULL;
4101
4102 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4103 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4104
4105 memcpy(&cmd->atio, atio, sizeof(*atio));
4106 cmd->state = QLA_TGT_STATE_NEW;
4107 cmd->tgt = vha->vha_tgt.qla_tgt;
4108 qlt_incr_num_pend_cmds(vha);
4109 cmd->vha = vha;
4110 cmd->se_cmd.map_tag = tag;
4111 cmd->sess = sess;
4112 cmd->loop_id = sess->loop_id;
4113 cmd->conf_compl_supported = sess->conf_compl_supported;
4114
4115 cmd->trc_flags = 0;
4116 cmd->jiffies_at_alloc = get_jiffies_64();
4117
4118 cmd->reset_count = vha->hw->chip_reset;
4119
4120 return cmd;
4121 }
4122
4123 static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
4124 uint16_t);
4125
4126 static void qlt_create_sess_from_atio(struct work_struct *work)
4127 {
4128 struct qla_tgt_sess_op *op = container_of(work,
4129 struct qla_tgt_sess_op, work);
4130 scsi_qla_host_t *vha = op->vha;
4131 struct qla_hw_data *ha = vha->hw;
4132 struct fc_port *sess;
4133 struct qla_tgt_cmd *cmd;
4134 unsigned long flags;
4135 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
4136
4137 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4138 list_del(&op->cmd_list);
4139 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4140
4141 if (op->aborted) {
4142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
4143 "sess_op with tag %u is aborted\n",
4144 op->atio.u.isp24.exchange_addr);
4145 goto out_term;
4146 }
4147
4148 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
4149 "qla_target(%d): Unable to find wwn login"
4150 " (s_id %x:%x:%x), trying to create it manually\n",
4151 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
4152
4153 if (op->atio.u.raw.entry_count > 1) {
4154 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
4155 "Dropping multy entry atio %p\n", &op->atio);
4156 goto out_term;
4157 }
4158
4159 sess = qlt_make_local_sess(vha, s_id);
4160 /* sess has an extra creation ref. */
4161
4162 if (!sess)
4163 goto out_term;
4164 /*
4165 * Now obtain a pre-allocated session tag using the original op->atio
4166 * packet header, and dispatch into __qlt_do_work() using the existing
4167 * process context.
4168 */
4169 cmd = qlt_get_tag(vha, sess, &op->atio);
4170 if (!cmd) {
4171 spin_lock_irqsave(&ha->hardware_lock, flags);
4172 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
4173 ha->tgt.tgt_ops->put_sess(sess);
4174 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4175 kfree(op);
4176 return;
4177 }
4178
4179 /*
4180 * __qlt_do_work() will call qlt_put_sess() to release
4181 * the extra reference taken above by qlt_make_local_sess()
4182 */
4183 __qlt_do_work(cmd);
4184 kfree(op);
4185 return;
4186 out_term:
4187 spin_lock_irqsave(&ha->hardware_lock, flags);
4188 qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0);
4189 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4190 kfree(op);
4191 }
4192
4193 /* ha->hardware_lock supposed to be held on entry */
4194 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4195 struct atio_from_isp *atio)
4196 {
4197 struct qla_hw_data *ha = vha->hw;
4198 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4199 struct fc_port *sess;
4200 struct qla_tgt_cmd *cmd;
4201 unsigned long flags;
4202
4203 if (unlikely(tgt->tgt_stop)) {
4204 ql_dbg(ql_dbg_io, vha, 0x3061,
4205 "New command while device %p is shutting down\n", tgt);
4206 return -EFAULT;
4207 }
4208
4209 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4210 if (unlikely(!sess)) {
4211 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
4212 GFP_ATOMIC);
4213 if (!op)
4214 return -ENOMEM;
4215
4216 memcpy(&op->atio, atio, sizeof(*atio));
4217 op->vha = vha;
4218
4219 spin_lock(&vha->cmd_list_lock);
4220 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
4221 spin_unlock(&vha->cmd_list_lock);
4222
4223 INIT_WORK(&op->work, qlt_create_sess_from_atio);
4224 queue_work(qla_tgt_wq, &op->work);
4225 return 0;
4226 }
4227
4228 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4229 * session deletion, but it's still in sess_del_work wq */
4230 if (sess->deleted) {
4231 ql_dbg(ql_dbg_io, vha, 0x3061,
4232 "New command while old session %p is being deleted\n",
4233 sess);
4234 return -EFAULT;
4235 }
4236
4237 /*
4238 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4239 */
4240 if (!kref_get_unless_zero(&sess->sess_kref)) {
4241 ql_dbg(ql_dbg_tgt, vha, 0xffff,
4242 "%s: kref_get fail, %8phC oxid %x \n",
4243 __func__, sess->port_name,
4244 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4245 return -EFAULT;
4246 }
4247
4248 cmd = qlt_get_tag(vha, sess, atio);
4249 if (!cmd) {
4250 ql_dbg(ql_dbg_io, vha, 0x3062,
4251 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4252 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4253 ha->tgt.tgt_ops->put_sess(sess);
4254 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4255 return -ENOMEM;
4256 }
4257
4258 cmd->cmd_in_wq = 1;
4259 cmd->trc_flags |= TRC_NEW_CMD;
4260 cmd->se_cmd.cpuid = ha->msix_count ?
4261 ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND;
4262
4263 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4264 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4265 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4266
4267 INIT_WORK(&cmd->work, qlt_do_work);
4268 if (ha->msix_count) {
4269 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4270 queue_work_on(smp_processor_id(), qla_tgt_wq,
4271 &cmd->work);
4272 else
4273 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4274 &cmd->work);
4275 } else {
4276 queue_work(qla_tgt_wq, &cmd->work);
4277 }
4278 return 0;
4279
4280 }
4281
4282 /* ha->hardware_lock supposed to be held on entry */
4283 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
4284 int fn, void *iocb, int flags)
4285 {
4286 struct scsi_qla_host *vha = sess->vha;
4287 struct qla_hw_data *ha = vha->hw;
4288 struct qla_tgt_mgmt_cmd *mcmd;
4289 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4290 int res;
4291
4292 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4293 if (!mcmd) {
4294 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4295 "qla_target(%d): Allocation of management "
4296 "command failed, some commands and their data could "
4297 "leak\n", vha->vp_idx);
4298 return -ENOMEM;
4299 }
4300 memset(mcmd, 0, sizeof(*mcmd));
4301 mcmd->sess = sess;
4302
4303 if (iocb) {
4304 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4305 sizeof(mcmd->orig_iocb.imm_ntfy));
4306 }
4307 mcmd->tmr_func = fn;
4308 mcmd->flags = flags;
4309 mcmd->reset_count = vha->hw->chip_reset;
4310
4311 switch (fn) {
4312 case QLA_TGT_LUN_RESET:
4313 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4314 break;
4315 }
4316
4317 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
4318 if (res != 0) {
4319 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4320 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4321 sess->vha->vp_idx, res);
4322 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4323 return -EFAULT;
4324 }
4325
4326 return 0;
4327 }
4328
4329 /* ha->hardware_lock supposed to be held on entry */
4330 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4331 {
4332 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4333 struct qla_hw_data *ha = vha->hw;
4334 struct qla_tgt *tgt;
4335 struct fc_port *sess;
4336 uint32_t lun, unpacked_lun;
4337 int fn;
4338 unsigned long flags;
4339
4340 tgt = vha->vha_tgt.qla_tgt;
4341
4342 lun = a->u.isp24.fcp_cmnd.lun;
4343 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4344
4345 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4346 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4347 a->u.isp24.fcp_hdr.s_id);
4348 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4349
4350 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4351
4352 if (!sess) {
4353 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4354 "qla_target(%d): task mgmt fn 0x%x for "
4355 "non-existant session\n", vha->vp_idx, fn);
4356 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4357 sizeof(struct atio_from_isp));
4358 }
4359
4360 if (sess->deleted)
4361 return -EFAULT;
4362
4363 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4364 }
4365
4366 /* ha->hardware_lock supposed to be held on entry */
4367 static int __qlt_abort_task(struct scsi_qla_host *vha,
4368 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
4369 {
4370 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4371 struct qla_hw_data *ha = vha->hw;
4372 struct qla_tgt_mgmt_cmd *mcmd;
4373 uint32_t lun, unpacked_lun;
4374 int rc;
4375
4376 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4377 if (mcmd == NULL) {
4378 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4379 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4380 vha->vp_idx, __func__);
4381 return -ENOMEM;
4382 }
4383 memset(mcmd, 0, sizeof(*mcmd));
4384
4385 mcmd->sess = sess;
4386 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4387 sizeof(mcmd->orig_iocb.imm_ntfy));
4388
4389 lun = a->u.isp24.fcp_cmnd.lun;
4390 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4391 mcmd->reset_count = vha->hw->chip_reset;
4392 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
4393
4394 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
4395 le16_to_cpu(iocb->u.isp2x.seq_id));
4396 if (rc != 0) {
4397 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4398 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4399 vha->vp_idx, rc);
4400 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4401 return -EFAULT;
4402 }
4403
4404 return 0;
4405 }
4406
4407 /* ha->hardware_lock supposed to be held on entry */
4408 static int qlt_abort_task(struct scsi_qla_host *vha,
4409 struct imm_ntfy_from_isp *iocb)
4410 {
4411 struct qla_hw_data *ha = vha->hw;
4412 struct fc_port *sess;
4413 int loop_id;
4414 unsigned long flags;
4415
4416 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4417
4418 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4419 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4420 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4421
4422 if (sess == NULL) {
4423 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4424 "qla_target(%d): task abort for unexisting "
4425 "session\n", vha->vp_idx);
4426 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4427 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4428 }
4429
4430 return __qlt_abort_task(vha, iocb, sess);
4431 }
4432
4433 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4434 {
4435 if (rc != MBS_COMMAND_COMPLETE) {
4436 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4437 "%s: se_sess %p / sess %p from"
4438 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4439 " LOGO failed: %#x\n",
4440 __func__,
4441 fcport->se_sess,
4442 fcport,
4443 fcport->port_name, fcport->loop_id,
4444 fcport->d_id.b.domain, fcport->d_id.b.area,
4445 fcport->d_id.b.al_pa, rc);
4446 }
4447
4448 fcport->logout_completed = 1;
4449 }
4450
4451 /*
4452 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4453 *
4454 * Schedules sessions with matching port_id/loop_id but different wwn for
4455 * deletion. Returns existing session with matching wwn if present.
4456 * Null otherwise.
4457 */
4458 struct fc_port *
4459 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
4460 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
4461 {
4462 struct fc_port *sess = NULL, *other_sess;
4463 uint64_t other_wwn;
4464
4465 *conflict_sess = NULL;
4466
4467 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
4468
4469 other_wwn = wwn_to_u64(other_sess->port_name);
4470
4471 if (wwn == other_wwn) {
4472 WARN_ON(sess);
4473 sess = other_sess;
4474 continue;
4475 }
4476
4477 /* find other sess with nport_id collision */
4478 if (port_id.b24 == other_sess->d_id.b24) {
4479 if (loop_id != other_sess->loop_id) {
4480 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
4481 "Invalidating sess %p loop_id %d wwn %llx.\n",
4482 other_sess, other_sess->loop_id, other_wwn);
4483
4484 /*
4485 * logout_on_delete is set by default, but another
4486 * session that has the same s_id/loop_id combo
4487 * might have cleared it when requested this session
4488 * deletion, so don't touch it
4489 */
4490 qlt_schedule_sess_for_deletion(other_sess, true);
4491 } else {
4492 /*
4493 * Another wwn used to have our s_id/loop_id
4494 * kill the session, but don't free the loop_id
4495 */
4496 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff,
4497 "Invalidating sess %p loop_id %d wwn %llx.\n",
4498 other_sess, other_sess->loop_id, other_wwn);
4499
4500
4501 other_sess->keep_nport_handle = 1;
4502 *conflict_sess = other_sess;
4503 qlt_schedule_sess_for_deletion(other_sess,
4504 true);
4505 }
4506 continue;
4507 }
4508
4509 /* find other sess with nport handle collision */
4510 if ((loop_id == other_sess->loop_id) &&
4511 (loop_id != FC_NO_LOOP_ID)) {
4512 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
4513 "Invalidating sess %p loop_id %d wwn %llx.\n",
4514 other_sess, other_sess->loop_id, other_wwn);
4515
4516 /* Same loop_id but different s_id
4517 * Ok to kill and logout */
4518 qlt_schedule_sess_for_deletion(other_sess, true);
4519 }
4520 }
4521
4522 return sess;
4523 }
4524
4525 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4526 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4527 {
4528 struct qla_tgt_sess_op *op;
4529 struct qla_tgt_cmd *cmd;
4530 uint32_t key;
4531 int count = 0;
4532
4533 key = (((u32)s_id->b.domain << 16) |
4534 ((u32)s_id->b.area << 8) |
4535 ((u32)s_id->b.al_pa));
4536
4537 spin_lock(&vha->cmd_list_lock);
4538 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4539 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4540
4541 if (op_key == key) {
4542 op->aborted = true;
4543 count++;
4544 }
4545 }
4546
4547 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4548 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4549 if (op_key == key) {
4550 op->aborted = true;
4551 count++;
4552 }
4553 }
4554
4555 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4556 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4557 if (cmd_key == key) {
4558 cmd->aborted = 1;
4559 count++;
4560 }
4561 }
4562 spin_unlock(&vha->cmd_list_lock);
4563
4564 return count;
4565 }
4566
4567 /*
4568 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4569 */
4570 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4571 struct imm_ntfy_from_isp *iocb)
4572 {
4573 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4574 struct qla_hw_data *ha = vha->hw;
4575 struct fc_port *sess = NULL, *conflict_sess = NULL;
4576 uint64_t wwn;
4577 port_id_t port_id;
4578 uint16_t loop_id;
4579 uint16_t wd3_lo;
4580 int res = 0;
4581 struct qlt_plogi_ack_t *pla;
4582 unsigned long flags;
4583
4584 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4585
4586 port_id.b.domain = iocb->u.isp24.port_id[2];
4587 port_id.b.area = iocb->u.isp24.port_id[1];
4588 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4589 port_id.b.rsvd_1 = 0;
4590
4591 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4592
4593 ql_dbg(ql_dbg_disc, vha, 0xf026,
4594 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4595 vha->vp_idx, iocb->u.isp24.port_id[2],
4596 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4597 iocb->u.isp24.status_subcode, loop_id,
4598 iocb->u.isp24.port_name);
4599
4600 /* res = 1 means ack at the end of thread
4601 * res = 0 means ack async/later.
4602 */
4603 switch (iocb->u.isp24.status_subcode) {
4604 case ELS_PLOGI:
4605
4606 /* Mark all stale commands in qla_tgt_wq for deletion */
4607 abort_cmds_for_s_id(vha, &port_id);
4608
4609 if (wwn) {
4610 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4611 sess = qlt_find_sess_invalidate_other(vha, wwn,
4612 port_id, loop_id, &conflict_sess);
4613 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4614 }
4615
4616 if (IS_SW_RESV_ADDR(port_id)) {
4617 res = 1;
4618 break;
4619 }
4620
4621 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4622 if (!pla) {
4623 qlt_send_term_imm_notif(vha, iocb, 1);
4624 break;
4625 }
4626
4627 res = 0;
4628
4629 if (conflict_sess) {
4630 conflict_sess->login_gen++;
4631 qlt_plogi_ack_link(vha, pla, conflict_sess,
4632 QLT_PLOGI_LINK_CONFLICT);
4633 }
4634
4635 if (!sess) {
4636 pla->ref_count++;
4637 qla24xx_post_newsess_work(vha, &port_id,
4638 iocb->u.isp24.port_name, pla);
4639 res = 0;
4640 break;
4641 }
4642
4643 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4644 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4645 sess->d_id = port_id;
4646 sess->login_gen++;
4647
4648 switch (sess->disc_state) {
4649 case DSC_DELETED:
4650 qlt_plogi_ack_unref(vha, pla);
4651 break;
4652
4653 default:
4654 /*
4655 * Under normal circumstances we want to release nport handle
4656 * during LOGO process to avoid nport handle leaks inside FW.
4657 * The exception is when LOGO is done while another PLOGI with
4658 * the same nport handle is waiting as might be the case here.
4659 * Note: there is always a possibily of a race where session
4660 * deletion has already started for other reasons (e.g. ACL
4661 * removal) and now PLOGI arrives:
4662 * 1. if PLOGI arrived in FW after nport handle has been freed,
4663 * FW must have assigned this PLOGI a new/same handle and we
4664 * can proceed ACK'ing it as usual when session deletion
4665 * completes.
4666 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4667 * bit reached it, the handle has now been released. We'll
4668 * get an error when we ACK this PLOGI. Nothing will be sent
4669 * back to initiator. Initiator should eventually retry
4670 * PLOGI and situation will correct itself.
4671 */
4672 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4673 (sess->d_id.b24 == port_id.b24));
4674
4675 ql_dbg(ql_dbg_disc, vha, 0xffff,
4676 "%s %d %8phC post del sess\n",
4677 __func__, __LINE__, sess->port_name);
4678
4679
4680 qlt_schedule_sess_for_deletion_lock(sess);
4681 break;
4682 }
4683
4684 break;
4685
4686 case ELS_PRLI:
4687 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4688
4689 if (wwn) {
4690 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4691 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4692 loop_id, &conflict_sess);
4693 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4694 }
4695
4696 if (conflict_sess) {
4697 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4698 "PRLI with conflicting sess %p port %8phC\n",
4699 conflict_sess, conflict_sess->port_name);
4700 qlt_send_term_imm_notif(vha, iocb, 1);
4701 res = 0;
4702 break;
4703 }
4704
4705 if (sess != NULL) {
4706 if (sess->fw_login_state != DSC_LS_PLOGI_PEND &&
4707 sess->fw_login_state != DSC_LS_PLOGI_COMP) {
4708 /*
4709 * Impatient initiator sent PRLI before last
4710 * PLOGI could finish. Will force him to re-try,
4711 * while last one finishes.
4712 */
4713 ql_log(ql_log_warn, sess->vha, 0xf095,
4714 "sess %p PRLI received, before plogi ack.\n",
4715 sess);
4716 qlt_send_term_imm_notif(vha, iocb, 1);
4717 res = 0;
4718 break;
4719 }
4720
4721 /*
4722 * This shouldn't happen under normal circumstances,
4723 * since we have deleted the old session during PLOGI
4724 */
4725 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
4726 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4727 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4728
4729 sess->local = 0;
4730 sess->loop_id = loop_id;
4731 sess->d_id = port_id;
4732 sess->fw_login_state = DSC_LS_PRLI_PEND;
4733
4734 if (wd3_lo & BIT_7)
4735 sess->conf_compl_supported = 1;
4736
4737 if ((wd3_lo & BIT_4) == 0)
4738 sess->port_type = FCT_INITIATOR;
4739 else
4740 sess->port_type = FCT_TARGET;
4741 }
4742 res = 1; /* send notify ack */
4743
4744 /* Make session global (not used in fabric mode) */
4745 if (ha->current_topology != ISP_CFG_F) {
4746 if (sess) {
4747 ql_dbg(ql_dbg_disc, vha, 0xffff,
4748 "%s %d %8phC post nack\n",
4749 __func__, __LINE__, sess->port_name);
4750 qla24xx_post_nack_work(vha, sess, iocb,
4751 SRB_NACK_PRLI);
4752 res = 0;
4753 } else {
4754 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4755 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4756 qla2xxx_wake_dpc(vha);
4757 }
4758 } else {
4759 if (sess) {
4760 ql_dbg(ql_dbg_disc, vha, 0xffff,
4761 "%s %d %8phC post nack\n",
4762 __func__, __LINE__, sess->port_name);
4763 qla24xx_post_nack_work(vha, sess, iocb,
4764 SRB_NACK_PRLI);
4765 res = 0;
4766 }
4767 }
4768 break;
4769
4770 case ELS_TPRLO:
4771 if (le16_to_cpu(iocb->u.isp24.flags) &
4772 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4773 loop_id = 0xFFFF;
4774 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4775 res = 1;
4776 break;
4777 }
4778 /* drop through */
4779 case ELS_LOGO:
4780 case ELS_PRLO:
4781 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4782 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4783 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4784
4785 if (sess) {
4786 sess->login_gen++;
4787 sess->fw_login_state = DSC_LS_LOGO_PEND;
4788 sess->logo_ack_needed = 1;
4789 memcpy(sess->iocb, iocb, IOCB_SIZE);
4790 }
4791
4792 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4793
4794 ql_dbg(ql_dbg_disc, vha, 0xffff,
4795 "%s: logo %llx res %d sess %p ",
4796 __func__, wwn, res, sess);
4797 if (res == 0) {
4798 /*
4799 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4800 * for LOGO_ACK & sess delete
4801 */
4802 BUG_ON(!sess);
4803 res = 0;
4804 } else {
4805 /* cmd did not go to upper layer. */
4806 if (sess) {
4807 qlt_schedule_sess_for_deletion_lock(sess);
4808 res = 0;
4809 }
4810 /* else logo will be ack */
4811 }
4812 break;
4813 case ELS_PDISC:
4814 case ELS_ADISC:
4815 {
4816 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4817 if (tgt->link_reinit_iocb_pending) {
4818 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4819 0, 0, 0, 0, 0, 0);
4820 tgt->link_reinit_iocb_pending = 0;
4821 }
4822
4823 sess = qla2x00_find_fcport_by_wwpn(vha,
4824 iocb->u.isp24.port_name, 1);
4825 if (sess) {
4826 ql_dbg(ql_dbg_disc, vha, 0xffff,
4827 "sess %p lid %d|%d DS %d LS %d\n",
4828 sess, sess->loop_id, loop_id,
4829 sess->disc_state, sess->fw_login_state);
4830 }
4831
4832 res = 1; /* send notify ack */
4833 break;
4834 }
4835
4836 case ELS_FLOGI: /* should never happen */
4837 default:
4838 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4839 "qla_target(%d): Unsupported ELS command %x "
4840 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4841 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4842 break;
4843 }
4844
4845 return res;
4846 }
4847
4848 /*
4849 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4850 */
4851 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4852 struct imm_ntfy_from_isp *iocb)
4853 {
4854 struct qla_hw_data *ha = vha->hw;
4855 uint32_t add_flags = 0;
4856 int send_notify_ack = 1;
4857 uint16_t status;
4858
4859 status = le16_to_cpu(iocb->u.isp2x.status);
4860 switch (status) {
4861 case IMM_NTFY_LIP_RESET:
4862 {
4863 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4864 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4865 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4866 iocb->u.isp24.status_subcode);
4867
4868 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4869 send_notify_ack = 0;
4870 break;
4871 }
4872
4873 case IMM_NTFY_LIP_LINK_REINIT:
4874 {
4875 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4876 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4877 "qla_target(%d): LINK REINIT (loop %#x, "
4878 "subcode %x)\n", vha->vp_idx,
4879 le16_to_cpu(iocb->u.isp24.nport_handle),
4880 iocb->u.isp24.status_subcode);
4881 if (tgt->link_reinit_iocb_pending) {
4882 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4883 0, 0, 0, 0, 0, 0);
4884 }
4885 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4886 tgt->link_reinit_iocb_pending = 1;
4887 /*
4888 * QLogic requires to wait after LINK REINIT for possible
4889 * PDISC or ADISC ELS commands
4890 */
4891 send_notify_ack = 0;
4892 break;
4893 }
4894
4895 case IMM_NTFY_PORT_LOGOUT:
4896 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4897 "qla_target(%d): Port logout (loop "
4898 "%#x, subcode %x)\n", vha->vp_idx,
4899 le16_to_cpu(iocb->u.isp24.nport_handle),
4900 iocb->u.isp24.status_subcode);
4901
4902 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4903 send_notify_ack = 0;
4904 /* The sessions will be cleared in the callback, if needed */
4905 break;
4906
4907 case IMM_NTFY_GLBL_TPRLO:
4908 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4909 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4910 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4911 send_notify_ack = 0;
4912 /* The sessions will be cleared in the callback, if needed */
4913 break;
4914
4915 case IMM_NTFY_PORT_CONFIG:
4916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4917 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4918 status);
4919 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4920 send_notify_ack = 0;
4921 /* The sessions will be cleared in the callback, if needed */
4922 break;
4923
4924 case IMM_NTFY_GLBL_LOGO:
4925 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4926 "qla_target(%d): Link failure detected\n",
4927 vha->vp_idx);
4928 /* I_T nexus loss */
4929 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4930 send_notify_ack = 0;
4931 break;
4932
4933 case IMM_NTFY_IOCB_OVERFLOW:
4934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4935 "qla_target(%d): Cannot provide requested "
4936 "capability (IOCB overflowed the immediate notify "
4937 "resource count)\n", vha->vp_idx);
4938 break;
4939
4940 case IMM_NTFY_ABORT_TASK:
4941 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4942 "qla_target(%d): Abort Task (S %08x I %#x -> "
4943 "L %#x)\n", vha->vp_idx,
4944 le16_to_cpu(iocb->u.isp2x.seq_id),
4945 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4946 le16_to_cpu(iocb->u.isp2x.lun));
4947 if (qlt_abort_task(vha, iocb) == 0)
4948 send_notify_ack = 0;
4949 break;
4950
4951 case IMM_NTFY_RESOURCE:
4952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4953 "qla_target(%d): Out of resources, host %ld\n",
4954 vha->vp_idx, vha->host_no);
4955 break;
4956
4957 case IMM_NTFY_MSG_RX:
4958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4959 "qla_target(%d): Immediate notify task %x\n",
4960 vha->vp_idx, iocb->u.isp2x.task_flags);
4961 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4962 send_notify_ack = 0;
4963 break;
4964
4965 case IMM_NTFY_ELS:
4966 if (qlt_24xx_handle_els(vha, iocb) == 0)
4967 send_notify_ack = 0;
4968 break;
4969 default:
4970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4971 "qla_target(%d): Received unknown immediate "
4972 "notify status %x\n", vha->vp_idx, status);
4973 break;
4974 }
4975
4976 if (send_notify_ack)
4977 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4978 }
4979
4980 /*
4981 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4982 * This function sends busy to ISP 2xxx or 24xx.
4983 */
4984 static int __qlt_send_busy(struct scsi_qla_host *vha,
4985 struct atio_from_isp *atio, uint16_t status)
4986 {
4987 struct ctio7_to_24xx *ctio24;
4988 struct qla_hw_data *ha = vha->hw;
4989 request_t *pkt;
4990 struct fc_port *sess = NULL;
4991 unsigned long flags;
4992
4993 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4994 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4995 atio->u.isp24.fcp_hdr.s_id);
4996 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4997 if (!sess) {
4998 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
4999 return 0;
5000 }
5001 /* Sending marker isn't necessary, since we called from ISR */
5002
5003 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
5004 if (!pkt) {
5005 ql_dbg(ql_dbg_io, vha, 0x3063,
5006 "qla_target(%d): %s failed: unable to allocate "
5007 "request packet", vha->vp_idx, __func__);
5008 return -ENOMEM;
5009 }
5010
5011 vha->tgt_counters.num_q_full_sent++;
5012 pkt->entry_count = 1;
5013 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5014
5015 ctio24 = (struct ctio7_to_24xx *)pkt;
5016 ctio24->entry_type = CTIO_TYPE7;
5017 ctio24->nport_handle = sess->loop_id;
5018 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5019 ctio24->vp_index = vha->vp_idx;
5020 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5021 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5022 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5023 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5024 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
5025 cpu_to_le16(
5026 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5027 CTIO7_FLAGS_DONT_RET_CTIO);
5028 /*
5029 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5030 * if the explicit conformation is used.
5031 */
5032 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5033 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5034 /* Memory Barrier */
5035 wmb();
5036 qla2x00_start_iocbs(vha, vha->req);
5037 return 0;
5038 }
5039
5040 /*
5041 * This routine is used to allocate a command for either a QFull condition
5042 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5043 * out previously.
5044 */
5045 static void
5046 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5047 struct atio_from_isp *atio, uint16_t status, int qfull)
5048 {
5049 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5050 struct qla_hw_data *ha = vha->hw;
5051 struct fc_port *sess;
5052 struct se_session *se_sess;
5053 struct qla_tgt_cmd *cmd;
5054 int tag;
5055
5056 if (unlikely(tgt->tgt_stop)) {
5057 ql_dbg(ql_dbg_io, vha, 0x300a,
5058 "New command while device %p is shutting down\n", tgt);
5059 return;
5060 }
5061
5062 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5063 vha->hw->tgt.num_qfull_cmds_dropped++;
5064 if (vha->hw->tgt.num_qfull_cmds_dropped >
5065 vha->qla_stats.stat_max_qfull_cmds_dropped)
5066 vha->qla_stats.stat_max_qfull_cmds_dropped =
5067 vha->hw->tgt.num_qfull_cmds_dropped;
5068
5069 ql_dbg(ql_dbg_io, vha, 0x3068,
5070 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5071 vha->vp_idx, __func__,
5072 vha->hw->tgt.num_qfull_cmds_dropped);
5073
5074 qlt_chk_exch_leak_thresh_hold(vha);
5075 return;
5076 }
5077
5078 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5079 (vha, atio->u.isp24.fcp_hdr.s_id);
5080 if (!sess)
5081 return;
5082
5083 se_sess = sess->se_sess;
5084
5085 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5086 if (tag < 0)
5087 return;
5088
5089 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5090 if (!cmd) {
5091 ql_dbg(ql_dbg_io, vha, 0x3009,
5092 "qla_target(%d): %s: Allocation of cmd failed\n",
5093 vha->vp_idx, __func__);
5094
5095 vha->hw->tgt.num_qfull_cmds_dropped++;
5096 if (vha->hw->tgt.num_qfull_cmds_dropped >
5097 vha->qla_stats.stat_max_qfull_cmds_dropped)
5098 vha->qla_stats.stat_max_qfull_cmds_dropped =
5099 vha->hw->tgt.num_qfull_cmds_dropped;
5100
5101 qlt_chk_exch_leak_thresh_hold(vha);
5102 return;
5103 }
5104
5105 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5106
5107 qlt_incr_num_pend_cmds(vha);
5108 INIT_LIST_HEAD(&cmd->cmd_list);
5109 memcpy(&cmd->atio, atio, sizeof(*atio));
5110
5111 cmd->tgt = vha->vha_tgt.qla_tgt;
5112 cmd->vha = vha;
5113 cmd->reset_count = vha->hw->chip_reset;
5114 cmd->q_full = 1;
5115
5116 if (qfull) {
5117 cmd->q_full = 1;
5118 /* NOTE: borrowing the state field to carry the status */
5119 cmd->state = status;
5120 } else
5121 cmd->term_exchg = 1;
5122
5123 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5124
5125 vha->hw->tgt.num_qfull_cmds_alloc++;
5126 if (vha->hw->tgt.num_qfull_cmds_alloc >
5127 vha->qla_stats.stat_max_qfull_cmds_alloc)
5128 vha->qla_stats.stat_max_qfull_cmds_alloc =
5129 vha->hw->tgt.num_qfull_cmds_alloc;
5130 }
5131
5132 int
5133 qlt_free_qfull_cmds(struct scsi_qla_host *vha)
5134 {
5135 struct qla_hw_data *ha = vha->hw;
5136 unsigned long flags;
5137 struct qla_tgt_cmd *cmd, *tcmd;
5138 struct list_head free_list;
5139 int rc = 0;
5140
5141 if (list_empty(&ha->tgt.q_full_list))
5142 return 0;
5143
5144 INIT_LIST_HEAD(&free_list);
5145
5146 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
5147
5148 if (list_empty(&ha->tgt.q_full_list)) {
5149 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5150 return 0;
5151 }
5152
5153 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
5154 if (cmd->q_full)
5155 /* cmd->state is a borrowed field to hold status */
5156 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
5157 else if (cmd->term_exchg)
5158 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
5159
5160 if (rc == -ENOMEM)
5161 break;
5162
5163 if (cmd->q_full)
5164 ql_dbg(ql_dbg_io, vha, 0x3006,
5165 "%s: busy sent for ox_id[%04x]\n", __func__,
5166 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5167 else if (cmd->term_exchg)
5168 ql_dbg(ql_dbg_io, vha, 0x3007,
5169 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5170 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5171 else
5172 ql_dbg(ql_dbg_io, vha, 0x3008,
5173 "%s: Unexpected cmd in QFull list %p\n", __func__,
5174 cmd);
5175
5176 list_del(&cmd->cmd_list);
5177 list_add_tail(&cmd->cmd_list, &free_list);
5178
5179 /* piggy back on hardware_lock for protection */
5180 vha->hw->tgt.num_qfull_cmds_alloc--;
5181 }
5182 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5183
5184 cmd = NULL;
5185
5186 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5187 list_del(&cmd->cmd_list);
5188 /* This cmd was never sent to TCM. There is no need
5189 * to schedule free or call free_cmd
5190 */
5191 qlt_free_cmd(cmd);
5192 }
5193 return rc;
5194 }
5195
5196 static void
5197 qlt_send_busy(struct scsi_qla_host *vha,
5198 struct atio_from_isp *atio, uint16_t status)
5199 {
5200 int rc = 0;
5201
5202 rc = __qlt_send_busy(vha, atio, status);
5203 if (rc == -ENOMEM)
5204 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5205 }
5206
5207 static int
5208 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
5209 struct atio_from_isp *atio, bool ha_locked)
5210 {
5211 struct qla_hw_data *ha = vha->hw;
5212 uint16_t status;
5213 unsigned long flags;
5214
5215 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5216 return 0;
5217
5218 if (!ha_locked)
5219 spin_lock_irqsave(&ha->hardware_lock, flags);
5220 status = temp_sam_status;
5221 qlt_send_busy(vha, atio, status);
5222 if (!ha_locked)
5223 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5224
5225 return 1;
5226 }
5227
5228 /* ha->hardware_lock supposed to be held on entry */
5229 /* called via callback from qla2xxx */
5230 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5231 struct atio_from_isp *atio, uint8_t ha_locked)
5232 {
5233 struct qla_hw_data *ha = vha->hw;
5234 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5235 int rc;
5236 unsigned long flags;
5237
5238 if (unlikely(tgt == NULL)) {
5239 ql_dbg(ql_dbg_tgt, vha, 0x3064,
5240 "ATIO pkt, but no tgt (ha %p)", ha);
5241 return;
5242 }
5243 /*
5244 * In tgt_stop mode we also should allow all requests to pass.
5245 * Otherwise, some commands can stuck.
5246 */
5247
5248 tgt->atio_irq_cmd_count++;
5249
5250 switch (atio->u.raw.entry_type) {
5251 case ATIO_TYPE7:
5252 if (unlikely(atio->u.isp24.exchange_addr ==
5253 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
5254 ql_dbg(ql_dbg_io, vha, 0x3065,
5255 "qla_target(%d): ATIO_TYPE7 "
5256 "received with UNKNOWN exchange address, "
5257 "sending QUEUE_FULL\n", vha->vp_idx);
5258 if (!ha_locked)
5259 spin_lock_irqsave(&ha->hardware_lock, flags);
5260 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
5261 if (!ha_locked)
5262 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5263 break;
5264 }
5265
5266
5267
5268 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5269 rc = qlt_chk_qfull_thresh_hold(vha, atio, ha_locked);
5270 if (rc != 0) {
5271 tgt->atio_irq_cmd_count--;
5272 return;
5273 }
5274 rc = qlt_handle_cmd_for_atio(vha, atio);
5275 } else {
5276 rc = qlt_handle_task_mgmt(vha, atio);
5277 }
5278 if (unlikely(rc != 0)) {
5279 if (rc == -ESRCH) {
5280 if (!ha_locked)
5281 spin_lock_irqsave
5282 (&ha->hardware_lock, flags);
5283
5284 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5285 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5286 #else
5287 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
5288 #endif
5289
5290 if (!ha_locked)
5291 spin_unlock_irqrestore
5292 (&ha->hardware_lock, flags);
5293
5294 } else {
5295 if (tgt->tgt_stop) {
5296 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5297 "qla_target: Unable to send "
5298 "command to target for req, "
5299 "ignoring.\n");
5300 } else {
5301 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5302 "qla_target(%d): Unable to send "
5303 "command to target, sending BUSY "
5304 "status.\n", vha->vp_idx);
5305 if (!ha_locked)
5306 spin_lock_irqsave(
5307 &ha->hardware_lock, flags);
5308 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5309 if (!ha_locked)
5310 spin_unlock_irqrestore(
5311 &ha->hardware_lock, flags);
5312 }
5313 }
5314 }
5315 break;
5316
5317 case IMMED_NOTIFY_TYPE:
5318 {
5319 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5320 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5321 "qla_target(%d): Received ATIO packet %x "
5322 "with error status %x\n", vha->vp_idx,
5323 atio->u.raw.entry_type,
5324 atio->u.isp2x.entry_status);
5325 break;
5326 }
5327 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5328
5329 if (!ha_locked)
5330 spin_lock_irqsave(&ha->hardware_lock, flags);
5331 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5332 if (!ha_locked)
5333 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5334 break;
5335 }
5336
5337 default:
5338 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5339 "qla_target(%d): Received unknown ATIO atio "
5340 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5341 break;
5342 }
5343
5344 tgt->atio_irq_cmd_count--;
5345 }
5346
5347 /* ha->hardware_lock supposed to be held on entry */
5348 /* called via callback from qla2xxx */
5349 static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
5350 {
5351 struct qla_hw_data *ha = vha->hw;
5352 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5353
5354 if (unlikely(tgt == NULL)) {
5355 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5356 "qla_target(%d): Response pkt %x received, but no "
5357 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
5358 return;
5359 }
5360
5361 /*
5362 * In tgt_stop mode we also should allow all requests to pass.
5363 * Otherwise, some commands can stuck.
5364 */
5365
5366 tgt->irq_cmd_count++;
5367
5368 switch (pkt->entry_type) {
5369 case CTIO_CRC2:
5370 case CTIO_TYPE7:
5371 {
5372 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5373 qlt_do_ctio_completion(vha, entry->handle,
5374 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5375 entry);
5376 break;
5377 }
5378
5379 case ACCEPT_TGT_IO_TYPE:
5380 {
5381 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5382 int rc;
5383 if (atio->u.isp2x.status !=
5384 cpu_to_le16(ATIO_CDB_VALID)) {
5385 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5386 "qla_target(%d): ATIO with error "
5387 "status %x received\n", vha->vp_idx,
5388 le16_to_cpu(atio->u.isp2x.status));
5389 break;
5390 }
5391
5392 rc = qlt_chk_qfull_thresh_hold(vha, atio, true);
5393 if (rc != 0) {
5394 tgt->irq_cmd_count--;
5395 return;
5396 }
5397
5398 rc = qlt_handle_cmd_for_atio(vha, atio);
5399 if (unlikely(rc != 0)) {
5400 if (rc == -ESRCH) {
5401 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5402 qlt_send_busy(vha, atio, 0);
5403 #else
5404 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
5405 #endif
5406 } else {
5407 if (tgt->tgt_stop) {
5408 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5409 "qla_target: Unable to send "
5410 "command to target, sending TERM "
5411 "EXCHANGE for rsp\n");
5412 qlt_send_term_exchange(vha, NULL,
5413 atio, 1, 0);
5414 } else {
5415 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5416 "qla_target(%d): Unable to send "
5417 "command to target, sending BUSY "
5418 "status\n", vha->vp_idx);
5419 qlt_send_busy(vha, atio, 0);
5420 }
5421 }
5422 }
5423 }
5424 break;
5425
5426 case CONTINUE_TGT_IO_TYPE:
5427 {
5428 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5429 qlt_do_ctio_completion(vha, entry->handle,
5430 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5431 entry);
5432 break;
5433 }
5434
5435 case CTIO_A64_TYPE:
5436 {
5437 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5438 qlt_do_ctio_completion(vha, entry->handle,
5439 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5440 entry);
5441 break;
5442 }
5443
5444 case IMMED_NOTIFY_TYPE:
5445 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5446 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5447 break;
5448
5449 case NOTIFY_ACK_TYPE:
5450 if (tgt->notify_ack_expected > 0) {
5451 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5452 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5453 "NOTIFY_ACK seq %08x status %x\n",
5454 le16_to_cpu(entry->u.isp2x.seq_id),
5455 le16_to_cpu(entry->u.isp2x.status));
5456 tgt->notify_ack_expected--;
5457 if (entry->u.isp2x.status !=
5458 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5459 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5460 "qla_target(%d): NOTIFY_ACK "
5461 "failed %x\n", vha->vp_idx,
5462 le16_to_cpu(entry->u.isp2x.status));
5463 }
5464 } else {
5465 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5466 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5467 vha->vp_idx);
5468 }
5469 break;
5470
5471 case ABTS_RECV_24XX:
5472 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5473 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5474 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5475 break;
5476
5477 case ABTS_RESP_24XX:
5478 if (tgt->abts_resp_expected > 0) {
5479 struct abts_resp_from_24xx_fw *entry =
5480 (struct abts_resp_from_24xx_fw *)pkt;
5481 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5482 "ABTS_RESP_24XX: compl_status %x\n",
5483 entry->compl_status);
5484 tgt->abts_resp_expected--;
5485 if (le16_to_cpu(entry->compl_status) !=
5486 ABTS_RESP_COMPL_SUCCESS) {
5487 if ((entry->error_subcode1 == 0x1E) &&
5488 (entry->error_subcode2 == 0)) {
5489 /*
5490 * We've got a race here: aborted
5491 * exchange not terminated, i.e.
5492 * response for the aborted command was
5493 * sent between the abort request was
5494 * received and processed.
5495 * Unfortunately, the firmware has a
5496 * silly requirement that all aborted
5497 * exchanges must be explicitely
5498 * terminated, otherwise it refuses to
5499 * send responses for the abort
5500 * requests. So, we have to
5501 * (re)terminate the exchange and retry
5502 * the abort response.
5503 */
5504 qlt_24xx_retry_term_exchange(vha,
5505 entry);
5506 } else
5507 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5508 "qla_target(%d): ABTS_RESP_24XX "
5509 "failed %x (subcode %x:%x)",
5510 vha->vp_idx, entry->compl_status,
5511 entry->error_subcode1,
5512 entry->error_subcode2);
5513 }
5514 } else {
5515 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5516 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5517 "received\n", vha->vp_idx);
5518 }
5519 break;
5520
5521 default:
5522 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5523 "qla_target(%d): Received unknown response pkt "
5524 "type %x\n", vha->vp_idx, pkt->entry_type);
5525 break;
5526 }
5527
5528 tgt->irq_cmd_count--;
5529 }
5530
5531 /*
5532 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5533 */
5534 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5535 uint16_t *mailbox)
5536 {
5537 struct qla_hw_data *ha = vha->hw;
5538 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5539 int login_code;
5540
5541 if (!ha->tgt.tgt_ops)
5542 return;
5543
5544 if (unlikely(tgt == NULL)) {
5545 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
5546 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
5547 return;
5548 }
5549
5550 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5551 IS_QLA2100(ha))
5552 return;
5553 /*
5554 * In tgt_stop mode we also should allow all requests to pass.
5555 * Otherwise, some commands can stuck.
5556 */
5557
5558 tgt->irq_cmd_count++;
5559
5560 switch (code) {
5561 case MBA_RESET: /* Reset */
5562 case MBA_SYSTEM_ERR: /* System Error */
5563 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5564 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5565 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5566 "qla_target(%d): System error async event %#x "
5567 "occurred", vha->vp_idx, code);
5568 break;
5569 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5570 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5571 break;
5572
5573 case MBA_LOOP_UP:
5574 {
5575 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
5576 "qla_target(%d): Async LOOP_UP occurred "
5577 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5578 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5579 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5580 if (tgt->link_reinit_iocb_pending) {
5581 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
5582 0, 0, 0, 0, 0, 0);
5583 tgt->link_reinit_iocb_pending = 0;
5584 }
5585 break;
5586 }
5587
5588 case MBA_LIP_OCCURRED:
5589 case MBA_LOOP_DOWN:
5590 case MBA_LIP_RESET:
5591 case MBA_RSCN_UPDATE:
5592 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
5593 "qla_target(%d): Async event %#x occurred "
5594 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5595 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5596 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5597 break;
5598
5599 case MBA_REJECTED_FCP_CMD:
5600 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
5601 "qla_target(%d): Async event LS_REJECT occurred "
5602 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5603 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5604 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5605
5606 if (le16_to_cpu(mailbox[3]) == 1) {
5607 /* exchange starvation. */
5608 vha->hw->exch_starvation++;
5609 if (vha->hw->exch_starvation > 5) {
5610 ql_log(ql_log_warn, vha, 0xffff,
5611 "Exchange starvation-. Resetting RISC\n");
5612
5613 vha->hw->exch_starvation = 0;
5614 if (IS_P3P_TYPE(vha->hw))
5615 set_bit(FCOE_CTX_RESET_NEEDED,
5616 &vha->dpc_flags);
5617 else
5618 set_bit(ISP_ABORT_NEEDED,
5619 &vha->dpc_flags);
5620 qla2xxx_wake_dpc(vha);
5621 }
5622 }
5623 break;
5624
5625 case MBA_PORT_UPDATE:
5626 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5627 "qla_target(%d): Port update async event %#x "
5628 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
5629 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5630 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5631 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5632
5633 login_code = le16_to_cpu(mailbox[2]);
5634 if (login_code == 0x4) {
5635 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5636 "Async MB 2: Got PLOGI Complete\n");
5637 vha->hw->exch_starvation = 0;
5638 } else if (login_code == 0x7)
5639 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5640 "Async MB 2: Port Logged Out\n");
5641 break;
5642 default:
5643 break;
5644 }
5645
5646 tgt->irq_cmd_count--;
5647 }
5648
5649 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5650 uint16_t loop_id)
5651 {
5652 fc_port_t *fcport, *tfcp, *del;
5653 int rc;
5654 unsigned long flags;
5655 u8 newfcport = 0;
5656
5657 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
5658 if (!fcport) {
5659 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5660 "qla_target(%d): Allocation of tmp FC port failed",
5661 vha->vp_idx);
5662 return NULL;
5663 }
5664
5665 fcport->loop_id = loop_id;
5666
5667 rc = qla24xx_gpdb_wait(vha, fcport, 0);
5668 if (rc != QLA_SUCCESS) {
5669 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5670 "qla_target(%d): Failed to retrieve fcport "
5671 "information -- get_port_database() returned %x "
5672 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5673 kfree(fcport);
5674 return NULL;
5675 }
5676
5677 del = NULL;
5678 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5679 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5680
5681 if (tfcp) {
5682 tfcp->d_id = fcport->d_id;
5683 tfcp->port_type = fcport->port_type;
5684 tfcp->supported_classes = fcport->supported_classes;
5685 tfcp->flags |= fcport->flags;
5686
5687 del = fcport;
5688 fcport = tfcp;
5689 } else {
5690 if (vha->hw->current_topology == ISP_CFG_F)
5691 fcport->flags |= FCF_FABRIC_DEVICE;
5692
5693 list_add_tail(&fcport->list, &vha->vp_fcports);
5694 if (!IS_SW_RESV_ADDR(fcport->d_id))
5695 vha->fcport_count++;
5696 fcport->login_gen++;
5697 fcport->disc_state = DSC_LOGIN_COMPLETE;
5698 fcport->login_succ = 1;
5699 newfcport = 1;
5700 }
5701
5702 fcport->deleted = 0;
5703 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5704
5705 switch (vha->host->active_mode) {
5706 case MODE_INITIATOR:
5707 case MODE_DUAL:
5708 if (newfcport) {
5709 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
5710 ql_dbg(ql_dbg_disc, vha, 0xffff,
5711 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5712 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5713 qla24xx_post_upd_fcport_work(vha, fcport);
5714 } else {
5715 ql_dbg(ql_dbg_disc, vha, 0xffff,
5716 "%s %d %8phC post gpsc fcp_cnt %d\n",
5717 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5718 qla24xx_post_gpsc_work(vha, fcport);
5719 }
5720 }
5721 break;
5722
5723 case MODE_TARGET:
5724 default:
5725 break;
5726 }
5727 if (del)
5728 qla2x00_free_fcport(del);
5729
5730 return fcport;
5731 }
5732
5733 /* Must be called under tgt_mutex */
5734 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
5735 uint8_t *s_id)
5736 {
5737 struct fc_port *sess = NULL;
5738 fc_port_t *fcport = NULL;
5739 int rc, global_resets;
5740 uint16_t loop_id = 0;
5741
5742 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5743 /*
5744 * This is Domain Controller, so it should be
5745 * OK to drop SCSI commands from it.
5746 */
5747 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5748 "Unable to find initiator with S_ID %x:%x:%x",
5749 s_id[0], s_id[1], s_id[2]);
5750 return NULL;
5751 }
5752
5753 mutex_lock(&vha->vha_tgt.tgt_mutex);
5754
5755 retry:
5756 global_resets =
5757 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
5758
5759 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5760 if (rc != 0) {
5761 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5762
5763 ql_log(ql_log_info, vha, 0xf071,
5764 "qla_target(%d): Unable to find "
5765 "initiator with S_ID %x:%x:%x",
5766 vha->vp_idx, s_id[0], s_id[1],
5767 s_id[2]);
5768
5769 if (rc == -ENOENT) {
5770 qlt_port_logo_t logo;
5771 sid_to_portid(s_id, &logo.id);
5772 logo.cmd_count = 1;
5773 qlt_send_first_logo(vha, &logo);
5774 }
5775
5776 return NULL;
5777 }
5778
5779 fcport = qlt_get_port_database(vha, loop_id);
5780 if (!fcport) {
5781 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5782 return NULL;
5783 }
5784
5785 if (global_resets !=
5786 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
5787 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5788 "qla_target(%d): global reset during session discovery "
5789 "(counter was %d, new %d), retrying", vha->vp_idx,
5790 global_resets,
5791 atomic_read(&vha->vha_tgt.
5792 qla_tgt->tgt_global_resets_count));
5793 goto retry;
5794 }
5795
5796 sess = qlt_create_sess(vha, fcport, true);
5797
5798 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5799
5800 return sess;
5801 }
5802
5803 static void qlt_abort_work(struct qla_tgt *tgt,
5804 struct qla_tgt_sess_work_param *prm)
5805 {
5806 struct scsi_qla_host *vha = tgt->vha;
5807 struct qla_hw_data *ha = vha->hw;
5808 struct fc_port *sess = NULL;
5809 unsigned long flags = 0, flags2 = 0;
5810 uint32_t be_s_id;
5811 uint8_t s_id[3];
5812 int rc;
5813
5814 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5815
5816 if (tgt->tgt_stop)
5817 goto out_term2;
5818
5819 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5820 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5821 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5822
5823 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5824 (unsigned char *)&be_s_id);
5825 if (!sess) {
5826 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5827
5828 sess = qlt_make_local_sess(vha, s_id);
5829 /* sess has got an extra creation ref */
5830
5831 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5832 if (!sess)
5833 goto out_term2;
5834 } else {
5835 if (sess->deleted) {
5836 sess = NULL;
5837 goto out_term2;
5838 }
5839
5840 if (!kref_get_unless_zero(&sess->sess_kref)) {
5841 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff,
5842 "%s: kref_get fail %8phC \n",
5843 __func__, sess->port_name);
5844 sess = NULL;
5845 goto out_term2;
5846 }
5847 }
5848
5849 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
5850 ha->tgt.tgt_ops->put_sess(sess);
5851 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5852
5853 if (rc != 0)
5854 goto out_term;
5855 return;
5856
5857 out_term2:
5858 if (sess)
5859 ha->tgt.tgt_ops->put_sess(sess);
5860 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5861
5862 out_term:
5863 spin_lock_irqsave(&ha->hardware_lock, flags);
5864 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
5865 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5866 }
5867
5868 static void qlt_tmr_work(struct qla_tgt *tgt,
5869 struct qla_tgt_sess_work_param *prm)
5870 {
5871 struct atio_from_isp *a = &prm->tm_iocb2;
5872 struct scsi_qla_host *vha = tgt->vha;
5873 struct qla_hw_data *ha = vha->hw;
5874 struct fc_port *sess = NULL;
5875 unsigned long flags;
5876 uint8_t *s_id = NULL; /* to hide compiler warnings */
5877 int rc;
5878 uint32_t lun, unpacked_lun;
5879 int fn;
5880 void *iocb;
5881
5882 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5883
5884 if (tgt->tgt_stop)
5885 goto out_term2;
5886
5887 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5888 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5889 if (!sess) {
5890 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5891
5892 sess = qlt_make_local_sess(vha, s_id);
5893 /* sess has got an extra creation ref */
5894
5895 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5896 if (!sess)
5897 goto out_term2;
5898 } else {
5899 if (sess->deleted) {
5900 sess = NULL;
5901 goto out_term2;
5902 }
5903
5904 if (!kref_get_unless_zero(&sess->sess_kref)) {
5905 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff,
5906 "%s: kref_get fail %8phC\n",
5907 __func__, sess->port_name);
5908 sess = NULL;
5909 goto out_term2;
5910 }
5911 }
5912
5913 iocb = a;
5914 lun = a->u.isp24.fcp_cmnd.lun;
5915 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
5916 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
5917
5918 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5919 ha->tgt.tgt_ops->put_sess(sess);
5920 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5921
5922 if (rc != 0)
5923 goto out_term;
5924 return;
5925
5926 out_term2:
5927 if (sess)
5928 ha->tgt.tgt_ops->put_sess(sess);
5929 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5930 out_term:
5931 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0);
5932 }
5933
5934 static void qlt_sess_work_fn(struct work_struct *work)
5935 {
5936 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
5937 struct scsi_qla_host *vha = tgt->vha;
5938 unsigned long flags;
5939
5940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
5941
5942 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5943 while (!list_empty(&tgt->sess_works_list)) {
5944 struct qla_tgt_sess_work_param *prm = list_entry(
5945 tgt->sess_works_list.next, typeof(*prm),
5946 sess_works_list_entry);
5947
5948 /*
5949 * This work can be scheduled on several CPUs at time, so we
5950 * must delete the entry to eliminate double processing
5951 */
5952 list_del(&prm->sess_works_list_entry);
5953
5954 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5955
5956 switch (prm->type) {
5957 case QLA_TGT_SESS_WORK_ABORT:
5958 qlt_abort_work(tgt, prm);
5959 break;
5960 case QLA_TGT_SESS_WORK_TM:
5961 qlt_tmr_work(tgt, prm);
5962 break;
5963 default:
5964 BUG_ON(1);
5965 break;
5966 }
5967
5968 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5969
5970 kfree(prm);
5971 }
5972 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5973 }
5974
5975 /* Must be called under tgt_host_action_mutex */
5976 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
5977 {
5978 struct qla_tgt *tgt;
5979
5980 if (!QLA_TGT_MODE_ENABLED())
5981 return 0;
5982
5983 if (!IS_TGT_MODE_CAPABLE(ha)) {
5984 ql_log(ql_log_warn, base_vha, 0xe070,
5985 "This adapter does not support target mode.\n");
5986 return 0;
5987 }
5988
5989 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
5990 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
5991
5992 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
5993
5994 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
5995 if (!tgt) {
5996 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
5997 "Unable to allocate struct qla_tgt\n");
5998 return -ENOMEM;
5999 }
6000
6001 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6002 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6003
6004 tgt->ha = ha;
6005 tgt->vha = base_vha;
6006 init_waitqueue_head(&tgt->waitQ);
6007 INIT_LIST_HEAD(&tgt->del_sess_list);
6008 spin_lock_init(&tgt->sess_work_lock);
6009 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6010 INIT_LIST_HEAD(&tgt->sess_works_list);
6011 atomic_set(&tgt->tgt_global_resets_count, 0);
6012
6013 base_vha->vha_tgt.qla_tgt = tgt;
6014
6015 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6016 "qla_target(%d): using 64 Bit PCI addressing",
6017 base_vha->vp_idx);
6018 tgt->tgt_enable_64bit_addr = 1;
6019 /* 3 is reserved */
6020 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6021 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
6022 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
6023
6024 mutex_lock(&qla_tgt_mutex);
6025 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6026 mutex_unlock(&qla_tgt_mutex);
6027
6028 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6029 ha->tgt.tgt_ops->add_target(base_vha);
6030
6031 return 0;
6032 }
6033
6034 /* Must be called under tgt_host_action_mutex */
6035 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6036 {
6037 if (!vha->vha_tgt.qla_tgt)
6038 return 0;
6039
6040 if (vha->fc_vport) {
6041 qlt_release(vha->vha_tgt.qla_tgt);
6042 return 0;
6043 }
6044
6045 /* free left over qfull cmds */
6046 qlt_init_term_exchange(vha);
6047
6048 mutex_lock(&qla_tgt_mutex);
6049 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
6050 mutex_unlock(&qla_tgt_mutex);
6051
6052 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6053 vha->host_no, ha);
6054 qlt_release(vha->vha_tgt.qla_tgt);
6055
6056 return 0;
6057 }
6058
6059 void qlt_remove_target_resources(struct qla_hw_data *ha)
6060 {
6061 struct scsi_qla_host *node;
6062 u32 key = 0;
6063
6064 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6065 btree_remove32(&ha->tgt.host_map, key);
6066
6067 btree_destroy32(&ha->tgt.host_map);
6068 }
6069
6070 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6071 unsigned char *b)
6072 {
6073 int i;
6074
6075 pr_debug("qla2xxx HW vha->node_name: ");
6076 for (i = 0; i < WWN_SIZE; i++)
6077 pr_debug("%02x ", vha->node_name[i]);
6078 pr_debug("\n");
6079 pr_debug("qla2xxx HW vha->port_name: ");
6080 for (i = 0; i < WWN_SIZE; i++)
6081 pr_debug("%02x ", vha->port_name[i]);
6082 pr_debug("\n");
6083
6084 pr_debug("qla2xxx passed configfs WWPN: ");
6085 put_unaligned_be64(wwpn, b);
6086 for (i = 0; i < WWN_SIZE; i++)
6087 pr_debug("%02x ", b[i]);
6088 pr_debug("\n");
6089 }
6090
6091 /**
6092 * qla_tgt_lport_register - register lport with external module
6093 *
6094 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6095 * @wwpn: Passwd FC target WWPN
6096 * @callback: lport initialization callback for tcm_qla2xxx code
6097 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6098 */
6099 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6100 u64 npiv_wwpn, u64 npiv_wwnn,
6101 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6102 {
6103 struct qla_tgt *tgt;
6104 struct scsi_qla_host *vha;
6105 struct qla_hw_data *ha;
6106 struct Scsi_Host *host;
6107 unsigned long flags;
6108 int rc;
6109 u8 b[WWN_SIZE];
6110
6111 mutex_lock(&qla_tgt_mutex);
6112 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6113 vha = tgt->vha;
6114 ha = vha->hw;
6115
6116 host = vha->host;
6117 if (!host)
6118 continue;
6119
6120 if (!(host->hostt->supported_mode & MODE_TARGET))
6121 continue;
6122
6123 spin_lock_irqsave(&ha->hardware_lock, flags);
6124 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6125 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6126 host->host_no);
6127 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6128 continue;
6129 }
6130 if (tgt->tgt_stop) {
6131 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6132 host->host_no);
6133 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6134 continue;
6135 }
6136 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6137
6138 if (!scsi_host_get(host)) {
6139 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6140 "Unable to scsi_host_get() for"
6141 " qla2xxx scsi_host\n");
6142 continue;
6143 }
6144 qlt_lport_dump(vha, phys_wwpn, b);
6145
6146 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6147 scsi_host_put(host);
6148 continue;
6149 }
6150 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6151 if (rc != 0)
6152 scsi_host_put(host);
6153
6154 mutex_unlock(&qla_tgt_mutex);
6155 return rc;
6156 }
6157 mutex_unlock(&qla_tgt_mutex);
6158
6159 return -ENODEV;
6160 }
6161 EXPORT_SYMBOL(qlt_lport_register);
6162
6163 /**
6164 * qla_tgt_lport_deregister - Degister lport
6165 *
6166 * @vha: Registered scsi_qla_host pointer
6167 */
6168 void qlt_lport_deregister(struct scsi_qla_host *vha)
6169 {
6170 struct qla_hw_data *ha = vha->hw;
6171 struct Scsi_Host *sh = vha->host;
6172 /*
6173 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6174 */
6175 vha->vha_tgt.target_lport_ptr = NULL;
6176 ha->tgt.tgt_ops = NULL;
6177 /*
6178 * Release the Scsi_Host reference for the underlying qla2xxx host
6179 */
6180 scsi_host_put(sh);
6181 }
6182 EXPORT_SYMBOL(qlt_lport_deregister);
6183
6184 /* Must be called under HW lock */
6185 static void qlt_set_mode(struct scsi_qla_host *vha)
6186 {
6187 switch (ql2x_ini_mode) {
6188 case QLA2XXX_INI_MODE_DISABLED:
6189 case QLA2XXX_INI_MODE_EXCLUSIVE:
6190 vha->host->active_mode = MODE_TARGET;
6191 break;
6192 case QLA2XXX_INI_MODE_ENABLED:
6193 vha->host->active_mode = MODE_UNKNOWN;
6194 break;
6195 case QLA2XXX_INI_MODE_DUAL:
6196 vha->host->active_mode = MODE_DUAL;
6197 break;
6198 default:
6199 break;
6200 }
6201 }
6202
6203 /* Must be called under HW lock */
6204 static void qlt_clear_mode(struct scsi_qla_host *vha)
6205 {
6206 switch (ql2x_ini_mode) {
6207 case QLA2XXX_INI_MODE_DISABLED:
6208 vha->host->active_mode = MODE_UNKNOWN;
6209 break;
6210 case QLA2XXX_INI_MODE_EXCLUSIVE:
6211 vha->host->active_mode = MODE_INITIATOR;
6212 break;
6213 case QLA2XXX_INI_MODE_ENABLED:
6214 case QLA2XXX_INI_MODE_DUAL:
6215 vha->host->active_mode = MODE_INITIATOR;
6216 break;
6217 default:
6218 break;
6219 }
6220 }
6221
6222 /*
6223 * qla_tgt_enable_vha - NO LOCK HELD
6224 *
6225 * host_reset, bring up w/ Target Mode Enabled
6226 */
6227 void
6228 qlt_enable_vha(struct scsi_qla_host *vha)
6229 {
6230 struct qla_hw_data *ha = vha->hw;
6231 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6232 unsigned long flags;
6233 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6234 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER;
6235
6236 if (!tgt) {
6237 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6238 "Unable to locate qla_tgt pointer from"
6239 " struct qla_hw_data\n");
6240 dump_stack();
6241 return;
6242 }
6243
6244 spin_lock_irqsave(&ha->hardware_lock, flags);
6245 tgt->tgt_stopped = 0;
6246 qlt_set_mode(vha);
6247 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6248
6249 if (vha->vp_idx) {
6250 qla24xx_disable_vp(vha);
6251 qla24xx_enable_vp(vha);
6252 } else {
6253 if (ha->msix_entries) {
6254 ql_dbg(ql_dbg_tgt, vha, 0xffff,
6255 "%s: host%ld : vector %d cpu %d\n",
6256 __func__, vha->host_no,
6257 ha->msix_entries[rspq_ent].vector,
6258 ha->msix_entries[rspq_ent].cpuid);
6259
6260 ha->tgt.rspq_vector_cpuid =
6261 ha->msix_entries[rspq_ent].cpuid;
6262 }
6263
6264 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6265 qla2xxx_wake_dpc(base_vha);
6266 qla2x00_wait_for_hba_online(base_vha);
6267 }
6268 }
6269 EXPORT_SYMBOL(qlt_enable_vha);
6270
6271 /*
6272 * qla_tgt_disable_vha - NO LOCK HELD
6273 *
6274 * Disable Target Mode and reset the adapter
6275 */
6276 static void qlt_disable_vha(struct scsi_qla_host *vha)
6277 {
6278 struct qla_hw_data *ha = vha->hw;
6279 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6280 unsigned long flags;
6281
6282 if (!tgt) {
6283 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6284 "Unable to locate qla_tgt pointer from"
6285 " struct qla_hw_data\n");
6286 dump_stack();
6287 return;
6288 }
6289
6290 spin_lock_irqsave(&ha->hardware_lock, flags);
6291 qlt_clear_mode(vha);
6292 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6293
6294 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6295 qla2xxx_wake_dpc(vha);
6296 qla2x00_wait_for_hba_online(vha);
6297 }
6298
6299 /*
6300 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6301 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6302 * members.
6303 */
6304 void
6305 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6306 {
6307 vha->vha_tgt.qla_tgt = NULL;
6308
6309 mutex_init(&vha->vha_tgt.tgt_mutex);
6310 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6311
6312 qlt_clear_mode(vha);
6313
6314 /*
6315 * NOTE: Currently the value is kept the same for <24xx and
6316 * >=24xx ISPs. If it is necessary to change it,
6317 * the check should be added for specific ISPs,
6318 * assigning the value appropriately.
6319 */
6320 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6321
6322 qlt_add_target(ha, vha);
6323 }
6324
6325 void
6326 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6327 {
6328 /*
6329 * FC-4 Feature bit 0 indicates target functionality to the name server.
6330 */
6331 if (qla_tgt_mode_enabled(vha)) {
6332 ct_req->req.rff_id.fc4_feature = BIT_0;
6333 } else if (qla_ini_mode_enabled(vha)) {
6334 ct_req->req.rff_id.fc4_feature = BIT_1;
6335 } else if (qla_dual_mode_enabled(vha))
6336 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
6337 }
6338
6339 /*
6340 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6341 * @ha: HA context
6342 *
6343 * Beginning of ATIO ring has initialization control block already built
6344 * by nvram config routine.
6345 *
6346 * Returns 0 on success.
6347 */
6348 void
6349 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6350 {
6351 struct qla_hw_data *ha = vha->hw;
6352 uint16_t cnt;
6353 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6354
6355 if (qla_ini_mode_enabled(vha))
6356 return;
6357
6358 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6359 pkt->u.raw.signature = ATIO_PROCESSED;
6360 pkt++;
6361 }
6362
6363 }
6364
6365 /*
6366 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6367 * @ha: SCSI driver HA context
6368 */
6369 void
6370 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6371 {
6372 struct qla_hw_data *ha = vha->hw;
6373 struct atio_from_isp *pkt;
6374 int cnt, i;
6375
6376 if (!ha->flags.fw_started)
6377 return;
6378
6379 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6380 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
6381 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6382 cnt = pkt->u.raw.entry_count;
6383
6384 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6385 /*
6386 * This packet is corrupted. The header + payload
6387 * can not be trusted. There is no point in passing
6388 * it further up.
6389 */
6390 ql_log(ql_log_warn, vha, 0xffff,
6391 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6392 pkt->u.isp24.fcp_hdr.s_id,
6393 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6394 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6395
6396 adjust_corrupted_atio(pkt);
6397 qlt_send_term_exchange(vha, NULL, pkt, ha_locked, 0);
6398 } else {
6399 qlt_24xx_atio_pkt_all_vps(vha,
6400 (struct atio_from_isp *)pkt, ha_locked);
6401 }
6402
6403 for (i = 0; i < cnt; i++) {
6404 ha->tgt.atio_ring_index++;
6405 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6406 ha->tgt.atio_ring_index = 0;
6407 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6408 } else
6409 ha->tgt.atio_ring_ptr++;
6410
6411 pkt->u.raw.signature = ATIO_PROCESSED;
6412 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6413 }
6414 wmb();
6415 }
6416
6417 /* Adjust ring index */
6418 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6419 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
6420 }
6421
6422 void
6423 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6424 {
6425 struct qla_hw_data *ha = vha->hw;
6426 if (!QLA_TGT_MODE_ENABLED())
6427 return;
6428
6429 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6430 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6431 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6432
6433 if (IS_ATIO_MSIX_CAPABLE(ha)) {
6434 struct qla_msix_entry *msix = &ha->msix_entries[2];
6435 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6436
6437 icb->msix_atio = cpu_to_le16(msix->entry);
6438 ql_dbg(ql_dbg_init, vha, 0xf072,
6439 "Registering ICB vector 0x%x for atio que.\n",
6440 msix->entry);
6441 }
6442 }
6443
6444 void
6445 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6446 {
6447 struct qla_hw_data *ha = vha->hw;
6448 u32 tmp;
6449 u16 t;
6450
6451 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6452 if (!ha->tgt.saved_set) {
6453 /* We save only once */
6454 ha->tgt.saved_exchange_count = nv->exchange_count;
6455 ha->tgt.saved_firmware_options_1 =
6456 nv->firmware_options_1;
6457 ha->tgt.saved_firmware_options_2 =
6458 nv->firmware_options_2;
6459 ha->tgt.saved_firmware_options_3 =
6460 nv->firmware_options_3;
6461 ha->tgt.saved_set = 1;
6462 }
6463
6464 if (qla_tgt_mode_enabled(vha)) {
6465 nv->exchange_count = cpu_to_le16(0xFFFF);
6466 } else { /* dual */
6467 if (ql_dm_tgt_ex_pct > 100) {
6468 ql_dm_tgt_ex_pct = 50;
6469 } else if (ql_dm_tgt_ex_pct == 100) {
6470 /* leave some for FW */
6471 ql_dm_tgt_ex_pct = 95;
6472 }
6473
6474 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
6475 tmp = tmp/100;
6476 if (tmp > 0xffff)
6477 tmp = 0xffff;
6478
6479 t = tmp & 0xffff;
6480 nv->exchange_count = cpu_to_le16(t);
6481 }
6482
6483 /* Enable target mode */
6484 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6485
6486 /* Disable ini mode, if requested */
6487 if (qla_tgt_mode_enabled(vha))
6488 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6489
6490 /* Disable Full Login after LIP */
6491 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6492 /* Enable initial LIP */
6493 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6494 if (ql2xtgt_tape_enable)
6495 /* Enable FC Tape support */
6496 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6497 else
6498 /* Disable FC Tape support */
6499 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6500
6501 /* Disable Full Login after LIP */
6502 nv->host_p &= cpu_to_le32(~BIT_10);
6503
6504 /*
6505 * clear BIT 15 explicitly as we have seen at least
6506 * a couple of instances where this was set and this
6507 * was causing the firmware to not be initialized.
6508 */
6509 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6510 /* Enable target PRLI control */
6511 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6512 } else {
6513 if (ha->tgt.saved_set) {
6514 nv->exchange_count = ha->tgt.saved_exchange_count;
6515 nv->firmware_options_1 =
6516 ha->tgt.saved_firmware_options_1;
6517 nv->firmware_options_2 =
6518 ha->tgt.saved_firmware_options_2;
6519 nv->firmware_options_3 =
6520 ha->tgt.saved_firmware_options_3;
6521 }
6522 return;
6523 }
6524
6525 if (ha->tgt.enable_class_2) {
6526 if (vha->flags.init_done)
6527 fc_host_supported_classes(vha->host) =
6528 FC_COS_CLASS2 | FC_COS_CLASS3;
6529
6530 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6531 } else {
6532 if (vha->flags.init_done)
6533 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6534
6535 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6536 }
6537 }
6538
6539 void
6540 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6541 struct init_cb_24xx *icb)
6542 {
6543 struct qla_hw_data *ha = vha->hw;
6544
6545 if (!QLA_TGT_MODE_ENABLED())
6546 return;
6547
6548 if (ha->tgt.node_name_set) {
6549 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6550 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6551 }
6552
6553 /* disable ZIO at start time. */
6554 if (!vha->flags.init_done) {
6555 uint32_t tmp;
6556 tmp = le32_to_cpu(icb->firmware_options_2);
6557 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6558 icb->firmware_options_2 = cpu_to_le32(tmp);
6559 }
6560 }
6561
6562 void
6563 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6564 {
6565 struct qla_hw_data *ha = vha->hw;
6566 u32 tmp;
6567 u16 t;
6568
6569 if (!QLA_TGT_MODE_ENABLED())
6570 return;
6571
6572 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6573 if (!ha->tgt.saved_set) {
6574 /* We save only once */
6575 ha->tgt.saved_exchange_count = nv->exchange_count;
6576 ha->tgt.saved_firmware_options_1 =
6577 nv->firmware_options_1;
6578 ha->tgt.saved_firmware_options_2 =
6579 nv->firmware_options_2;
6580 ha->tgt.saved_firmware_options_3 =
6581 nv->firmware_options_3;
6582 ha->tgt.saved_set = 1;
6583 }
6584
6585 if (qla_tgt_mode_enabled(vha)) {
6586 nv->exchange_count = cpu_to_le16(0xFFFF);
6587 } else { /* dual */
6588 if (ql_dm_tgt_ex_pct > 100) {
6589 ql_dm_tgt_ex_pct = 50;
6590 } else if (ql_dm_tgt_ex_pct == 100) {
6591 /* leave some for FW */
6592 ql_dm_tgt_ex_pct = 95;
6593 }
6594
6595 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
6596 tmp = tmp/100;
6597 if (tmp > 0xffff)
6598 tmp = 0xffff;
6599 t = tmp & 0xffff;
6600 nv->exchange_count = cpu_to_le16(t);
6601 }
6602
6603 /* Enable target mode */
6604 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6605
6606 /* Disable ini mode, if requested */
6607 if (qla_tgt_mode_enabled(vha))
6608 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6609 /* Disable Full Login after LIP */
6610 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6611 /* Enable initial LIP */
6612 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6613 /*
6614 * clear BIT 15 explicitly as we have seen at
6615 * least a couple of instances where this was set
6616 * and this was causing the firmware to not be
6617 * initialized.
6618 */
6619 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6620 if (ql2xtgt_tape_enable)
6621 /* Enable FC tape support */
6622 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6623 else
6624 /* Disable FC tape support */
6625 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6626
6627 /* Disable Full Login after LIP */
6628 nv->host_p &= cpu_to_le32(~BIT_10);
6629 /* Enable target PRLI control */
6630 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6631 } else {
6632 if (ha->tgt.saved_set) {
6633 nv->exchange_count = ha->tgt.saved_exchange_count;
6634 nv->firmware_options_1 =
6635 ha->tgt.saved_firmware_options_1;
6636 nv->firmware_options_2 =
6637 ha->tgt.saved_firmware_options_2;
6638 nv->firmware_options_3 =
6639 ha->tgt.saved_firmware_options_3;
6640 }
6641 return;
6642 }
6643
6644 if (ha->tgt.enable_class_2) {
6645 if (vha->flags.init_done)
6646 fc_host_supported_classes(vha->host) =
6647 FC_COS_CLASS2 | FC_COS_CLASS3;
6648
6649 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6650 } else {
6651 if (vha->flags.init_done)
6652 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6653
6654 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6655 }
6656 }
6657
6658 void
6659 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6660 struct init_cb_81xx *icb)
6661 {
6662 struct qla_hw_data *ha = vha->hw;
6663
6664 if (!QLA_TGT_MODE_ENABLED())
6665 return;
6666
6667 if (ha->tgt.node_name_set) {
6668 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6669 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6670 }
6671
6672 /* disable ZIO at start time. */
6673 if (!vha->flags.init_done) {
6674 uint32_t tmp;
6675 tmp = le32_to_cpu(icb->firmware_options_2);
6676 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6677 icb->firmware_options_2 = cpu_to_le32(tmp);
6678 }
6679
6680 }
6681
6682 void
6683 qlt_83xx_iospace_config(struct qla_hw_data *ha)
6684 {
6685 if (!QLA_TGT_MODE_ENABLED())
6686 return;
6687
6688 ha->msix_count += 1; /* For ATIO Q */
6689 }
6690
6691 int
6692 qlt_24xx_process_response_error(struct scsi_qla_host *vha,
6693 struct sts_entry_24xx *pkt)
6694 {
6695 switch (pkt->entry_type) {
6696 case ABTS_RECV_24XX:
6697 case ABTS_RESP_24XX:
6698 case CTIO_TYPE7:
6699 case NOTIFY_ACK_TYPE:
6700 case CTIO_CRC2:
6701 return 1;
6702 default:
6703 return 0;
6704 }
6705 }
6706
6707 void
6708 qlt_modify_vp_config(struct scsi_qla_host *vha,
6709 struct vp_config_entry_24xx *vpmod)
6710 {
6711 /* enable target mode. Bit5 = 1 => disable */
6712 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
6713 vpmod->options_idx1 &= ~BIT_5;
6714
6715 /* Disable ini mode, if requested. bit4 = 1 => disable */
6716 if (qla_tgt_mode_enabled(vha))
6717 vpmod->options_idx1 &= ~BIT_4;
6718 }
6719
6720 void
6721 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6722 {
6723 int rc;
6724
6725 if (!QLA_TGT_MODE_ENABLED())
6726 return;
6727
6728 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6729 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6730 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6731 } else {
6732 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6733 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6734 }
6735
6736 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6737 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
6738
6739 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6740 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6741 qlt_unknown_atio_work_fn);
6742
6743 qlt_clear_mode(base_vha);
6744
6745 rc = btree_init32(&ha->tgt.host_map);
6746 if (rc)
6747 ql_log(ql_log_info, base_vha, 0xffff,
6748 "Unable to initialize ha->host_map btree\n");
6749
6750 qlt_update_vp_map(base_vha, SET_VP_IDX);
6751 }
6752
6753 irqreturn_t
6754 qla83xx_msix_atio_q(int irq, void *dev_id)
6755 {
6756 struct rsp_que *rsp;
6757 scsi_qla_host_t *vha;
6758 struct qla_hw_data *ha;
6759 unsigned long flags;
6760
6761 rsp = (struct rsp_que *) dev_id;
6762 ha = rsp->hw;
6763 vha = pci_get_drvdata(ha->pdev);
6764
6765 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6766
6767 qlt_24xx_process_atio_queue(vha, 0);
6768
6769 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6770
6771 return IRQ_HANDLED;
6772 }
6773
6774 static void
6775 qlt_handle_abts_recv_work(struct work_struct *work)
6776 {
6777 struct qla_tgt_sess_op *op = container_of(work,
6778 struct qla_tgt_sess_op, work);
6779 scsi_qla_host_t *vha = op->vha;
6780 struct qla_hw_data *ha = vha->hw;
6781 unsigned long flags;
6782
6783 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset))
6784 return;
6785
6786 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6787 qlt_24xx_process_atio_queue(vha, 0);
6788 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6789
6790 spin_lock_irqsave(&ha->hardware_lock, flags);
6791 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio);
6792 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6793
6794 kfree(op);
6795 }
6796
6797 void
6798 qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
6799 {
6800 struct qla_tgt_sess_op *op;
6801
6802 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6803
6804 if (!op) {
6805 /* do not reach for ATIO queue here. This is best effort err
6806 * recovery at this point.
6807 */
6808 qlt_response_pkt_all_vps(vha, pkt);
6809 return;
6810 }
6811
6812 memcpy(&op->atio, pkt, sizeof(*pkt));
6813 op->vha = vha;
6814 op->chip_reset = vha->hw->chip_reset;
6815 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6816 queue_work(qla_tgt_wq, &op->work);
6817 return;
6818 }
6819
6820 int
6821 qlt_mem_alloc(struct qla_hw_data *ha)
6822 {
6823 if (!QLA_TGT_MODE_ENABLED())
6824 return 0;
6825
6826 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6827 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6828 if (!ha->tgt.tgt_vp_map)
6829 return -ENOMEM;
6830
6831 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6832 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6833 &ha->tgt.atio_dma, GFP_KERNEL);
6834 if (!ha->tgt.atio_ring) {
6835 kfree(ha->tgt.tgt_vp_map);
6836 return -ENOMEM;
6837 }
6838 return 0;
6839 }
6840
6841 void
6842 qlt_mem_free(struct qla_hw_data *ha)
6843 {
6844 if (!QLA_TGT_MODE_ENABLED())
6845 return;
6846
6847 if (ha->tgt.atio_ring) {
6848 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6849 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6850 ha->tgt.atio_dma);
6851 }
6852 kfree(ha->tgt.tgt_vp_map);
6853 }
6854
6855 /* vport_slock to be held by the caller */
6856 void
6857 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6858 {
6859 void *slot;
6860 u32 key;
6861 int rc;
6862
6863 if (!QLA_TGT_MODE_ENABLED())
6864 return;
6865
6866 key = vha->d_id.b24;
6867
6868 switch (cmd) {
6869 case SET_VP_IDX:
6870 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6871 break;
6872 case SET_AL_PA:
6873 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
6874 if (!slot) {
6875 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
6876 "Save vha in host_map %p %06x\n", vha, key);
6877 rc = btree_insert32(&vha->hw->tgt.host_map,
6878 key, vha, GFP_ATOMIC);
6879 if (rc)
6880 ql_log(ql_log_info, vha, 0xffff,
6881 "Unable to insert s_id into host_map: %06x\n",
6882 key);
6883 return;
6884 }
6885 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
6886 "replace existing vha in host_map %p %06x\n", vha, key);
6887 btree_update32(&vha->hw->tgt.host_map, key, vha);
6888 break;
6889 case RESET_VP_IDX:
6890 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
6891 break;
6892 case RESET_AL_PA:
6893 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
6894 "clear vha in host_map %p %06x\n", vha, key);
6895 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
6896 if (slot)
6897 btree_remove32(&vha->hw->tgt.host_map, key);
6898 vha->d_id.b24 = 0;
6899 break;
6900 }
6901 }
6902
6903 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
6904 {
6905 unsigned long flags;
6906 struct qla_hw_data *ha = vha->hw;
6907
6908 if (!vha->d_id.b24) {
6909 spin_lock_irqsave(&ha->vport_slock, flags);
6910 vha->d_id = id;
6911 qlt_update_vp_map(vha, SET_AL_PA);
6912 spin_unlock_irqrestore(&ha->vport_slock, flags);
6913 } else if (vha->d_id.b24 != id.b24) {
6914 spin_lock_irqsave(&ha->vport_slock, flags);
6915 qlt_update_vp_map(vha, RESET_AL_PA);
6916 vha->d_id = id;
6917 qlt_update_vp_map(vha, SET_AL_PA);
6918 spin_unlock_irqrestore(&ha->vport_slock, flags);
6919 }
6920 }
6921
6922 static int __init qlt_parse_ini_mode(void)
6923 {
6924 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
6925 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
6926 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
6927 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
6928 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
6929 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
6930 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
6931 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
6932 else
6933 return false;
6934
6935 return true;
6936 }
6937
6938 int __init qlt_init(void)
6939 {
6940 int ret;
6941
6942 if (!qlt_parse_ini_mode()) {
6943 ql_log(ql_log_fatal, NULL, 0xe06b,
6944 "qlt_parse_ini_mode() failed\n");
6945 return -EINVAL;
6946 }
6947
6948 if (!QLA_TGT_MODE_ENABLED())
6949 return 0;
6950
6951 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
6952 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
6953 qla_tgt_mgmt_cmd), 0, NULL);
6954 if (!qla_tgt_mgmt_cmd_cachep) {
6955 ql_log(ql_log_fatal, NULL, 0xe06d,
6956 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
6957 return -ENOMEM;
6958 }
6959
6960 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
6961 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
6962 0, NULL);
6963
6964 if (!qla_tgt_plogi_cachep) {
6965 ql_log(ql_log_fatal, NULL, 0xe06d,
6966 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
6967 ret = -ENOMEM;
6968 goto out_mgmt_cmd_cachep;
6969 }
6970
6971 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
6972 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
6973 if (!qla_tgt_mgmt_cmd_mempool) {
6974 ql_log(ql_log_fatal, NULL, 0xe06e,
6975 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
6976 ret = -ENOMEM;
6977 goto out_plogi_cachep;
6978 }
6979
6980 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
6981 if (!qla_tgt_wq) {
6982 ql_log(ql_log_fatal, NULL, 0xe06f,
6983 "alloc_workqueue for qla_tgt_wq failed\n");
6984 ret = -ENOMEM;
6985 goto out_cmd_mempool;
6986 }
6987 /*
6988 * Return 1 to signal that initiator-mode is being disabled
6989 */
6990 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
6991
6992 out_cmd_mempool:
6993 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
6994 out_plogi_cachep:
6995 kmem_cache_destroy(qla_tgt_plogi_cachep);
6996 out_mgmt_cmd_cachep:
6997 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
6998 return ret;
6999 }
7000
7001 void qlt_exit(void)
7002 {
7003 if (!QLA_TGT_MODE_ENABLED())
7004 return;
7005
7006 destroy_workqueue(qla_tgt_wq);
7007 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7008 kmem_cache_destroy(qla_tgt_plogi_cachep);
7009 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7010 }
Ubuntu Artful kernel mirror