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workqueue: Make worker_attach/detach_pool() update worker->pool
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / qla_target.c
blob025dc2d3f3de53a4e816486d8bdee12ee2011638
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 = 0;
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 ql2xuctrlirq = 1;
70 module_param(ql2xuctrlirq, int, 0644);
71 MODULE_PARM_DESC(ql2xuctrlirq,
72 "User to control IRQ placement via smp_affinity."
73 "Valid with qlini_mode=disabled."
74 "1(default): enable");
75
76 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
77
78 static int qla_sam_status = SAM_STAT_BUSY;
79 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */
80
81 /*
82 * From scsi/fc/fc_fcp.h
83 */
84 enum fcp_resp_rsp_codes {
85 FCP_TMF_CMPL = 0,
86 FCP_DATA_LEN_INVALID = 1,
87 FCP_CMND_FIELDS_INVALID = 2,
88 FCP_DATA_PARAM_MISMATCH = 3,
89 FCP_TMF_REJECTED = 4,
90 FCP_TMF_FAILED = 5,
91 FCP_TMF_INVALID_LUN = 9,
92 };
93
94 /*
95 * fc_pri_ta from scsi/fc/fc_fcp.h
96 */
97 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
98 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
99 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
100 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
101 #define FCP_PTA_MASK 7 /* mask for task attribute field */
102 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
103 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
104
105 /*
106 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
107 * must be called under HW lock and could unlock/lock it inside.
108 * It isn't an issue, since in the current implementation on the time when
109 * those functions are called:
110 *
111 * - Either context is IRQ and only IRQ handler can modify HW data,
112 * including rings related fields,
113 *
114 * - Or access to target mode variables from struct qla_tgt doesn't
115 * cross those functions boundaries, except tgt_stop, which
116 * additionally protected by irq_cmd_count.
117 */
118 /* Predefs for callbacks handed to qla2xxx LLD */
119 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
120 struct atio_from_isp *pkt, uint8_t);
121 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
122 response_t *pkt);
123 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
124 int fn, void *iocb, int flags);
125 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
126 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
127 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
128 struct atio_from_isp *atio, uint16_t status, int qfull);
129 static void qlt_disable_vha(struct scsi_qla_host *vha);
130 static void qlt_clear_tgt_db(struct qla_tgt *tgt);
131 static void qlt_send_notify_ack(struct qla_qpair *qpair,
132 struct imm_ntfy_from_isp *ntfy,
133 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
134 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
135 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
136 struct imm_ntfy_from_isp *imm, int ha_locked);
137 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
138 fc_port_t *fcport, bool local);
139 void qlt_unreg_sess(struct fc_port *sess);
140 static void qlt_24xx_handle_abts(struct scsi_qla_host *,
141 struct abts_recv_from_24xx *);
142 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
143 uint16_t);
144
145 /*
146 * Global Variables
147 */
148 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
149 struct kmem_cache *qla_tgt_plogi_cachep;
150 static mempool_t *qla_tgt_mgmt_cmd_mempool;
151 static struct workqueue_struct *qla_tgt_wq;
152 static DEFINE_MUTEX(qla_tgt_mutex);
153 static LIST_HEAD(qla_tgt_glist);
154
155 static const char *prot_op_str(u32 prot_op)
156 {
157 switch (prot_op) {
158 case TARGET_PROT_NORMAL: return "NORMAL";
159 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
160 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
161 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
162 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
163 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
164 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
165 default: return "UNKNOWN";
166 }
167 }
168
169 /* This API intentionally takes dest as a parameter, rather than returning
170 * int value to avoid caller forgetting to issue wmb() after the store */
171 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
172 {
173 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
174 *dest = atomic_inc_return(&base_vha->generation_tick);
175 /* memory barrier */
176 wmb();
177 }
178
179 /* Might release hw lock, then reaquire!! */
180 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
181 {
182 /* Send marker if required */
183 if (unlikely(vha->marker_needed != 0)) {
184 int rc = qla2x00_issue_marker(vha, vha_locked);
185 if (rc != QLA_SUCCESS) {
186 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
187 "qla_target(%d): issue_marker() failed\n",
188 vha->vp_idx);
189 }
190 return rc;
191 }
192 return QLA_SUCCESS;
193 }
194
195 static inline
196 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
197 uint8_t *d_id)
198 {
199 struct scsi_qla_host *host;
200 uint32_t key = 0;
201
202 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
203 (vha->d_id.b.al_pa == d_id[2]))
204 return vha;
205
206 key = (uint32_t)d_id[0] << 16;
207 key |= (uint32_t)d_id[1] << 8;
208 key |= (uint32_t)d_id[2];
209
210 host = btree_lookup32(&vha->hw->tgt.host_map, key);
211 if (!host)
212 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
213 "Unable to find host %06x\n", key);
214
215 return host;
216 }
217
218 static inline
219 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
220 uint16_t vp_idx)
221 {
222 struct qla_hw_data *ha = vha->hw;
223
224 if (vha->vp_idx == vp_idx)
225 return vha;
226
227 BUG_ON(ha->tgt.tgt_vp_map == NULL);
228 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
229 return ha->tgt.tgt_vp_map[vp_idx].vha;
230
231 return NULL;
232 }
233
234 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
235 {
236 unsigned long flags;
237
238 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
239
240 vha->hw->tgt.num_pend_cmds++;
241 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
242 vha->qla_stats.stat_max_pend_cmds =
243 vha->hw->tgt.num_pend_cmds;
244 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
245 }
246 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
247 {
248 unsigned long flags;
249
250 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
251 vha->hw->tgt.num_pend_cmds--;
252 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
253 }
254
255
256 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
257 struct atio_from_isp *atio, uint8_t ha_locked)
258 {
259 struct qla_tgt_sess_op *u;
260 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
261 unsigned long flags;
262
263 if (tgt->tgt_stop) {
264 ql_dbg(ql_dbg_async, vha, 0x502c,
265 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
266 vha->vp_idx);
267 goto out_term;
268 }
269
270 u = kzalloc(sizeof(*u), GFP_ATOMIC);
271 if (u == NULL)
272 goto out_term;
273
274 u->vha = vha;
275 memcpy(&u->atio, atio, sizeof(*atio));
276 INIT_LIST_HEAD(&u->cmd_list);
277
278 spin_lock_irqsave(&vha->cmd_list_lock, flags);
279 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
280 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
281
282 schedule_delayed_work(&vha->unknown_atio_work, 1);
283
284 out:
285 return;
286
287 out_term:
288 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
289 goto out;
290 }
291
292 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
293 uint8_t ha_locked)
294 {
295 struct qla_tgt_sess_op *u, *t;
296 scsi_qla_host_t *host;
297 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
298 unsigned long flags;
299 uint8_t queued = 0;
300
301 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
302 if (u->aborted) {
303 ql_dbg(ql_dbg_async, vha, 0x502e,
304 "Freeing unknown %s %p, because of Abort\n",
305 "ATIO_TYPE7", u);
306 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
307 &u->atio, ha_locked, 0);
308 goto abort;
309 }
310
311 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
312 if (host != NULL) {
313 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
314 "Requeuing unknown ATIO_TYPE7 %p\n", u);
315 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
316 } else if (tgt->tgt_stop) {
317 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
318 "Freeing unknown %s %p, because tgt is being stopped\n",
319 "ATIO_TYPE7", u);
320 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
321 &u->atio, ha_locked, 0);
322 } else {
323 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
324 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
325 if (!queued) {
326 queued = 1;
327 schedule_delayed_work(&vha->unknown_atio_work,
328 1);
329 }
330 continue;
331 }
332
333 abort:
334 spin_lock_irqsave(&vha->cmd_list_lock, flags);
335 list_del(&u->cmd_list);
336 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
337 kfree(u);
338 }
339 }
340
341 void qlt_unknown_atio_work_fn(struct work_struct *work)
342 {
343 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
344 struct scsi_qla_host, unknown_atio_work);
345
346 qlt_try_to_dequeue_unknown_atios(vha, 0);
347 }
348
349 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
350 struct atio_from_isp *atio, uint8_t ha_locked)
351 {
352 ql_dbg(ql_dbg_tgt, vha, 0xe072,
353 "%s: qla_target(%d): type %x ox_id %04x\n",
354 __func__, vha->vp_idx, atio->u.raw.entry_type,
355 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
356
357 switch (atio->u.raw.entry_type) {
358 case ATIO_TYPE7:
359 {
360 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
361 atio->u.isp24.fcp_hdr.d_id);
362 if (unlikely(NULL == host)) {
363 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
364 "qla_target(%d): Received ATIO_TYPE7 "
365 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
366 atio->u.isp24.fcp_hdr.d_id[0],
367 atio->u.isp24.fcp_hdr.d_id[1],
368 atio->u.isp24.fcp_hdr.d_id[2]);
369
370
371 qlt_queue_unknown_atio(vha, atio, ha_locked);
372 break;
373 }
374 if (unlikely(!list_empty(&vha->unknown_atio_list)))
375 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
376
377 qlt_24xx_atio_pkt(host, atio, ha_locked);
378 break;
379 }
380
381 case IMMED_NOTIFY_TYPE:
382 {
383 struct scsi_qla_host *host = vha;
384 struct imm_ntfy_from_isp *entry =
385 (struct imm_ntfy_from_isp *)atio;
386
387 qlt_issue_marker(vha, ha_locked);
388
389 if ((entry->u.isp24.vp_index != 0xFF) &&
390 (entry->u.isp24.nport_handle != 0xFFFF)) {
391 host = qlt_find_host_by_vp_idx(vha,
392 entry->u.isp24.vp_index);
393 if (unlikely(!host)) {
394 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
395 "qla_target(%d): Received "
396 "ATIO (IMMED_NOTIFY_TYPE) "
397 "with unknown vp_index %d\n",
398 vha->vp_idx, entry->u.isp24.vp_index);
399 break;
400 }
401 }
402 qlt_24xx_atio_pkt(host, atio, ha_locked);
403 break;
404 }
405
406 case VP_RPT_ID_IOCB_TYPE:
407 qla24xx_report_id_acquisition(vha,
408 (struct vp_rpt_id_entry_24xx *)atio);
409 break;
410
411 case ABTS_RECV_24XX:
412 {
413 struct abts_recv_from_24xx *entry =
414 (struct abts_recv_from_24xx *)atio;
415 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
416 entry->vp_index);
417 unsigned long flags;
418
419 if (unlikely(!host)) {
420 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
421 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
422 "received, with unknown vp_index %d\n",
423 vha->vp_idx, entry->vp_index);
424 break;
425 }
426 if (!ha_locked)
427 spin_lock_irqsave(&host->hw->hardware_lock, flags);
428 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
429 if (!ha_locked)
430 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
431 break;
432 }
433
434 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
435
436 default:
437 ql_dbg(ql_dbg_tgt, vha, 0xe040,
438 "qla_target(%d): Received unknown ATIO atio "
439 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
440 break;
441 }
442
443 return false;
444 }
445
446 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
447 struct rsp_que *rsp, response_t *pkt)
448 {
449 switch (pkt->entry_type) {
450 case CTIO_CRC2:
451 ql_dbg(ql_dbg_tgt, vha, 0xe073,
452 "qla_target(%d):%s: CRC2 Response pkt\n",
453 vha->vp_idx, __func__);
454 /* fall through */
455 case CTIO_TYPE7:
456 {
457 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
458 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
459 entry->vp_index);
460 if (unlikely(!host)) {
461 ql_dbg(ql_dbg_tgt, vha, 0xe041,
462 "qla_target(%d): Response pkt (CTIO_TYPE7) "
463 "received, with unknown vp_index %d\n",
464 vha->vp_idx, entry->vp_index);
465 break;
466 }
467 qlt_response_pkt(host, rsp, pkt);
468 break;
469 }
470
471 case IMMED_NOTIFY_TYPE:
472 {
473 struct scsi_qla_host *host = vha;
474 struct imm_ntfy_from_isp *entry =
475 (struct imm_ntfy_from_isp *)pkt;
476
477 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
478 if (unlikely(!host)) {
479 ql_dbg(ql_dbg_tgt, vha, 0xe042,
480 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
481 "received, with unknown vp_index %d\n",
482 vha->vp_idx, entry->u.isp24.vp_index);
483 break;
484 }
485 qlt_response_pkt(host, rsp, pkt);
486 break;
487 }
488
489 case NOTIFY_ACK_TYPE:
490 {
491 struct scsi_qla_host *host = vha;
492 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
493
494 if (0xFF != entry->u.isp24.vp_index) {
495 host = qlt_find_host_by_vp_idx(vha,
496 entry->u.isp24.vp_index);
497 if (unlikely(!host)) {
498 ql_dbg(ql_dbg_tgt, vha, 0xe043,
499 "qla_target(%d): Response "
500 "pkt (NOTIFY_ACK_TYPE) "
501 "received, with unknown "
502 "vp_index %d\n", vha->vp_idx,
503 entry->u.isp24.vp_index);
504 break;
505 }
506 }
507 qlt_response_pkt(host, rsp, pkt);
508 break;
509 }
510
511 case ABTS_RECV_24XX:
512 {
513 struct abts_recv_from_24xx *entry =
514 (struct abts_recv_from_24xx *)pkt;
515 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
516 entry->vp_index);
517 if (unlikely(!host)) {
518 ql_dbg(ql_dbg_tgt, vha, 0xe044,
519 "qla_target(%d): Response pkt "
520 "(ABTS_RECV_24XX) received, with unknown "
521 "vp_index %d\n", vha->vp_idx, entry->vp_index);
522 break;
523 }
524 qlt_response_pkt(host, rsp, pkt);
525 break;
526 }
527
528 case ABTS_RESP_24XX:
529 {
530 struct abts_resp_to_24xx *entry =
531 (struct abts_resp_to_24xx *)pkt;
532 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
533 entry->vp_index);
534 if (unlikely(!host)) {
535 ql_dbg(ql_dbg_tgt, vha, 0xe045,
536 "qla_target(%d): Response pkt "
537 "(ABTS_RECV_24XX) received, with unknown "
538 "vp_index %d\n", vha->vp_idx, entry->vp_index);
539 break;
540 }
541 qlt_response_pkt(host, rsp, pkt);
542 break;
543 }
544
545 default:
546 qlt_response_pkt(vha, rsp, pkt);
547 break;
548 }
549
550 }
551
552 /*
553 * All qlt_plogi_ack_t operations are protected by hardware_lock
554 */
555 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
556 struct imm_ntfy_from_isp *ntfy, int type)
557 {
558 struct qla_work_evt *e;
559 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
560 if (!e)
561 return QLA_FUNCTION_FAILED;
562
563 e->u.nack.fcport = fcport;
564 e->u.nack.type = type;
565 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
566 return qla2x00_post_work(vha, e);
567 }
568
569 static
570 void qla2x00_async_nack_sp_done(void *s, int res)
571 {
572 struct srb *sp = (struct srb *)s;
573 struct scsi_qla_host *vha = sp->vha;
574 unsigned long flags;
575
576 ql_dbg(ql_dbg_disc, vha, 0x20f2,
577 "Async done-%s res %x %8phC type %d\n",
578 sp->name, res, sp->fcport->port_name, sp->type);
579
580 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
581 sp->fcport->flags &= ~FCF_ASYNC_SENT;
582 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
583
584 switch (sp->type) {
585 case SRB_NACK_PLOGI:
586 sp->fcport->login_gen++;
587 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
588 sp->fcport->logout_on_delete = 1;
589 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
590 sp->fcport->send_els_logo = 0;
591 break;
592
593 case SRB_NACK_PRLI:
594 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
595 sp->fcport->deleted = 0;
596 sp->fcport->send_els_logo = 0;
597
598 if (!sp->fcport->login_succ &&
599 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
600 sp->fcport->login_succ = 1;
601
602 vha->fcport_count++;
603
604 if (!IS_IIDMA_CAPABLE(vha->hw) ||
605 !vha->hw->flags.gpsc_supported) {
606 ql_dbg(ql_dbg_disc, vha, 0x20f3,
607 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
608 __func__, __LINE__,
609 sp->fcport->port_name,
610 vha->fcport_count);
611 sp->fcport->disc_state = DSC_UPD_FCPORT;
612 qla24xx_post_upd_fcport_work(vha, sp->fcport);
613 } else {
614 ql_dbg(ql_dbg_disc, vha, 0x20f5,
615 "%s %d %8phC post gpsc fcp_cnt %d\n",
616 __func__, __LINE__,
617 sp->fcport->port_name,
618 vha->fcport_count);
619
620 qla24xx_post_gpsc_work(vha, sp->fcport);
621 }
622 }
623 break;
624
625 case SRB_NACK_LOGO:
626 sp->fcport->login_gen++;
627 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
628 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
629 break;
630 }
631 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
632
633 sp->free(sp);
634 }
635
636 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
637 struct imm_ntfy_from_isp *ntfy, int type)
638 {
639 int rval = QLA_FUNCTION_FAILED;
640 srb_t *sp;
641 char *c = NULL;
642
643 fcport->flags |= FCF_ASYNC_SENT;
644 switch (type) {
645 case SRB_NACK_PLOGI:
646 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
647 c = "PLOGI";
648 break;
649 case SRB_NACK_PRLI:
650 fcport->fw_login_state = DSC_LS_PRLI_PEND;
651 fcport->deleted = 0;
652 c = "PRLI";
653 break;
654 case SRB_NACK_LOGO:
655 fcport->fw_login_state = DSC_LS_LOGO_PEND;
656 c = "LOGO";
657 break;
658 }
659
660 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
661 if (!sp)
662 goto done;
663
664 sp->type = type;
665 sp->name = "nack";
666
667 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
668 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
669
670 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
671 sp->done = qla2x00_async_nack_sp_done;
672
673 rval = qla2x00_start_sp(sp);
674 if (rval != QLA_SUCCESS)
675 goto done_free_sp;
676
677 ql_dbg(ql_dbg_disc, vha, 0x20f4,
678 "Async-%s %8phC hndl %x %s\n",
679 sp->name, fcport->port_name, sp->handle, c);
680
681 return rval;
682
683 done_free_sp:
684 sp->free(sp);
685 done:
686 fcport->flags &= ~FCF_ASYNC_SENT;
687 return rval;
688 }
689
690 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
691 {
692 fc_port_t *t;
693 unsigned long flags;
694
695 switch (e->u.nack.type) {
696 case SRB_NACK_PRLI:
697 mutex_lock(&vha->vha_tgt.tgt_mutex);
698 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
699 mutex_unlock(&vha->vha_tgt.tgt_mutex);
700 if (t) {
701 ql_log(ql_log_info, vha, 0xd034,
702 "%s create sess success %p", __func__, t);
703 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
704 /* create sess has an extra kref */
705 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
706 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
707 }
708 break;
709 }
710 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
711 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
712 }
713
714 void qla24xx_delete_sess_fn(struct work_struct *work)
715 {
716 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
717 struct qla_hw_data *ha = fcport->vha->hw;
718 unsigned long flags;
719
720 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
721
722 if (fcport->se_sess) {
723 ha->tgt.tgt_ops->shutdown_sess(fcport);
724 ha->tgt.tgt_ops->put_sess(fcport);
725 } else {
726 qlt_unreg_sess(fcport);
727 }
728 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
729 }
730
731 /*
732 * Called from qla2x00_reg_remote_port()
733 */
734 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
735 {
736 struct qla_hw_data *ha = vha->hw;
737 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
738 struct fc_port *sess = fcport;
739 unsigned long flags;
740
741 if (!vha->hw->tgt.tgt_ops)
742 return;
743
744 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
745 if (tgt->tgt_stop) {
746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
747 return;
748 }
749
750 if (fcport->disc_state == DSC_DELETE_PEND) {
751 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
752 return;
753 }
754
755 if (!sess->se_sess) {
756 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
757
758 mutex_lock(&vha->vha_tgt.tgt_mutex);
759 sess = qlt_create_sess(vha, fcport, false);
760 mutex_unlock(&vha->vha_tgt.tgt_mutex);
761
762 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
763 } else {
764 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
765 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
766 return;
767 }
768
769 if (!kref_get_unless_zero(&sess->sess_kref)) {
770 ql_dbg(ql_dbg_disc, vha, 0x2107,
771 "%s: kref_get fail sess %8phC \n",
772 __func__, sess->port_name);
773 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
774 return;
775 }
776
777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
778 "qla_target(%u): %ssession for port %8phC "
779 "(loop ID %d) reappeared\n", vha->vp_idx,
780 sess->local ? "local " : "", sess->port_name, sess->loop_id);
781
782 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
783 "Reappeared sess %p\n", sess);
784
785 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
786 fcport->loop_id,
787 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
788 }
789
790 if (sess && sess->local) {
791 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
792 "qla_target(%u): local session for "
793 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
794 fcport->port_name, sess->loop_id);
795 sess->local = 0;
796 }
797 ha->tgt.tgt_ops->put_sess(sess);
798 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
799 }
800
801 /*
802 * This is a zero-base ref-counting solution, since hardware_lock
803 * guarantees that ref_count is not modified concurrently.
804 * Upon successful return content of iocb is undefined
805 */
806 static struct qlt_plogi_ack_t *
807 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
808 struct imm_ntfy_from_isp *iocb)
809 {
810 struct qlt_plogi_ack_t *pla;
811
812 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
813 if (pla->id.b24 == id->b24) {
814 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
815 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
816 return pla;
817 }
818 }
819
820 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
821 if (!pla) {
822 ql_dbg(ql_dbg_async, vha, 0x5088,
823 "qla_target(%d): Allocation of plogi_ack failed\n",
824 vha->vp_idx);
825 return NULL;
826 }
827
828 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
829 pla->id = *id;
830 list_add_tail(&pla->list, &vha->plogi_ack_list);
831
832 return pla;
833 }
834
835 void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
836 struct qlt_plogi_ack_t *pla)
837 {
838 struct imm_ntfy_from_isp *iocb = &pla->iocb;
839 port_id_t port_id;
840 uint16_t loop_id;
841 fc_port_t *fcport = pla->fcport;
842
843 BUG_ON(!pla->ref_count);
844 pla->ref_count--;
845
846 if (pla->ref_count)
847 return;
848
849 ql_dbg(ql_dbg_disc, vha, 0x5089,
850 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
851 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
852 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
853 iocb->u.isp24.port_id[0],
854 le16_to_cpu(iocb->u.isp24.nport_handle),
855 iocb->u.isp24.exchange_address, iocb->ox_id);
856
857 port_id.b.domain = iocb->u.isp24.port_id[2];
858 port_id.b.area = iocb->u.isp24.port_id[1];
859 port_id.b.al_pa = iocb->u.isp24.port_id[0];
860 port_id.b.rsvd_1 = 0;
861
862 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
863
864 fcport->loop_id = loop_id;
865 fcport->d_id = port_id;
866 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
867 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
868 else
869 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
870
871 list_for_each_entry(fcport, &vha->vp_fcports, list) {
872 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
873 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
874 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
875 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
876 }
877
878 list_del(&pla->list);
879 kmem_cache_free(qla_tgt_plogi_cachep, pla);
880 }
881
882 void
883 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
884 struct fc_port *sess, enum qlt_plogi_link_t link)
885 {
886 struct imm_ntfy_from_isp *iocb = &pla->iocb;
887 /* Inc ref_count first because link might already be pointing at pla */
888 pla->ref_count++;
889
890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
891 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
892 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
893 sess, link, sess->port_name,
894 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
895 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
896 pla->ref_count, pla, link);
897
898 if (link == QLT_PLOGI_LINK_CONFLICT) {
899 switch (sess->disc_state) {
900 case DSC_DELETED:
901 case DSC_DELETE_PEND:
902 pla->ref_count--;
903 return;
904 default:
905 break;
906 }
907 }
908
909 if (sess->plogi_link[link])
910 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
911
912 if (link == QLT_PLOGI_LINK_SAME_WWN)
913 pla->fcport = sess;
914
915 sess->plogi_link[link] = pla;
916 }
917
918 typedef struct {
919 /* These fields must be initialized by the caller */
920 port_id_t id;
921 /*
922 * number of cmds dropped while we were waiting for
923 * initiator to ack LOGO initialize to 1 if LOGO is
924 * triggered by a command, otherwise, to 0
925 */
926 int cmd_count;
927
928 /* These fields are used by callee */
929 struct list_head list;
930 } qlt_port_logo_t;
931
932 static void
933 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
934 {
935 qlt_port_logo_t *tmp;
936 int res;
937
938 mutex_lock(&vha->vha_tgt.tgt_mutex);
939
940 list_for_each_entry(tmp, &vha->logo_list, list) {
941 if (tmp->id.b24 == logo->id.b24) {
942 tmp->cmd_count += logo->cmd_count;
943 mutex_unlock(&vha->vha_tgt.tgt_mutex);
944 return;
945 }
946 }
947
948 list_add_tail(&logo->list, &vha->logo_list);
949
950 mutex_unlock(&vha->vha_tgt.tgt_mutex);
951
952 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
953
954 mutex_lock(&vha->vha_tgt.tgt_mutex);
955 list_del(&logo->list);
956 mutex_unlock(&vha->vha_tgt.tgt_mutex);
957
958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
959 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
960 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
961 logo->cmd_count, res);
962 }
963
964 void qlt_free_session_done(struct work_struct *work)
965 {
966 struct fc_port *sess = container_of(work, struct fc_port,
967 free_work);
968 struct qla_tgt *tgt = sess->tgt;
969 struct scsi_qla_host *vha = sess->vha;
970 struct qla_hw_data *ha = vha->hw;
971 unsigned long flags;
972 bool logout_started = false;
973 scsi_qla_host_t *base_vha;
974 struct qlt_plogi_ack_t *own =
975 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
976
977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
978 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
979 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
980 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
981 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
982 sess->logout_on_delete, sess->keep_nport_handle,
983 sess->send_els_logo);
984
985 if (!IS_SW_RESV_ADDR(sess->d_id)) {
986 if (sess->send_els_logo) {
987 qlt_port_logo_t logo;
988
989 logo.id = sess->d_id;
990 logo.cmd_count = 0;
991 sess->send_els_logo = 0;
992 qlt_send_first_logo(vha, &logo);
993 }
994
995 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
996 int rc;
997
998 if (!own ||
999 (own &&
1000 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
1001 rc = qla2x00_post_async_logout_work(vha, sess,
1002 NULL);
1003 if (rc != QLA_SUCCESS)
1004 ql_log(ql_log_warn, vha, 0xf085,
1005 "Schedule logo failed sess %p rc %d\n",
1006 sess, rc);
1007 else
1008 logout_started = true;
1009 } else if (own && (own->iocb.u.isp24.status_subcode ==
1010 ELS_PRLI) && ha->flags.rida_fmt2) {
1011 rc = qla2x00_post_async_prlo_work(vha, sess,
1012 NULL);
1013 if (rc != QLA_SUCCESS)
1014 ql_log(ql_log_warn, vha, 0xf085,
1015 "Schedule PRLO failed sess %p rc %d\n",
1016 sess, rc);
1017 else
1018 logout_started = true;
1019 }
1020 }
1021 }
1022
1023 /*
1024 * Release the target session for FC Nexus from fabric module code.
1025 */
1026 if (sess->se_sess != NULL)
1027 ha->tgt.tgt_ops->free_session(sess);
1028
1029 if (logout_started) {
1030 bool traced = false;
1031
1032 while (!READ_ONCE(sess->logout_completed)) {
1033 if (!traced) {
1034 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1035 "%s: waiting for sess %p logout\n",
1036 __func__, sess);
1037 traced = true;
1038 }
1039 msleep(100);
1040 }
1041
1042 ql_dbg(ql_dbg_disc, vha, 0xf087,
1043 "%s: sess %p logout completed\n", __func__, sess);
1044 }
1045
1046 if (sess->logo_ack_needed) {
1047 sess->logo_ack_needed = 0;
1048 qla24xx_async_notify_ack(vha, sess,
1049 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
1050 }
1051
1052 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1053 if (sess->se_sess) {
1054 sess->se_sess = NULL;
1055 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1056 tgt->sess_count--;
1057 }
1058
1059 sess->disc_state = DSC_DELETED;
1060 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1061 sess->deleted = QLA_SESS_DELETED;
1062 sess->login_retry = vha->hw->login_retry_count;
1063
1064 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1065 vha->fcport_count--;
1066 sess->login_succ = 0;
1067 }
1068
1069 qla2x00_clear_loop_id(sess);
1070
1071 if (sess->conflict) {
1072 sess->conflict->login_pause = 0;
1073 sess->conflict = NULL;
1074 if (!test_bit(UNLOADING, &vha->dpc_flags))
1075 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1076 }
1077
1078 {
1079 struct qlt_plogi_ack_t *con =
1080 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
1081 struct imm_ntfy_from_isp *iocb;
1082
1083 if (con) {
1084 iocb = &con->iocb;
1085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
1086 "se_sess %p / sess %p port %8phC is gone,"
1087 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1088 sess->se_sess, sess, sess->port_name,
1089 own ? "releasing own PLOGI" : "no own PLOGI pending",
1090 own ? own->ref_count : -1,
1091 iocb->u.isp24.port_name, con->ref_count);
1092 qlt_plogi_ack_unref(vha, con);
1093 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
1094 } else {
1095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1096 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1097 sess->se_sess, sess, sess->port_name,
1098 own ? "releasing own PLOGI" :
1099 "no own PLOGI pending",
1100 own ? own->ref_count : -1);
1101 }
1102
1103 if (own) {
1104 sess->fw_login_state = DSC_LS_PLOGI_PEND;
1105 qlt_plogi_ack_unref(vha, own);
1106 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1107 }
1108 }
1109
1110 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1111
1112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
1113 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1114 sess, sess->port_name, vha->fcport_count);
1115
1116 if (tgt && (tgt->sess_count == 0))
1117 wake_up_all(&tgt->waitQ);
1118
1119 if (vha->fcport_count == 0)
1120 wake_up_all(&vha->fcport_waitQ);
1121
1122 base_vha = pci_get_drvdata(ha->pdev);
1123
1124 sess->free_pending = 0;
1125
1126 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1127 return;
1128
1129 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
1130 switch (vha->host->active_mode) {
1131 case MODE_INITIATOR:
1132 case MODE_DUAL:
1133 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1134 qla2xxx_wake_dpc(vha);
1135 break;
1136 case MODE_TARGET:
1137 default:
1138 /* no-op */
1139 break;
1140 }
1141 }
1142 }
1143
1144 /* ha->tgt.sess_lock supposed to be held on entry */
1145 void qlt_unreg_sess(struct fc_port *sess)
1146 {
1147 struct scsi_qla_host *vha = sess->vha;
1148 unsigned long flags;
1149
1150 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
1151 "%s sess %p for deletion %8phC\n",
1152 __func__, sess, sess->port_name);
1153
1154 spin_lock_irqsave(&sess->vha->work_lock, flags);
1155 if (sess->free_pending) {
1156 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1157 return;
1158 }
1159 sess->free_pending = 1;
1160 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1161
1162 if (sess->se_sess)
1163 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
1164
1165 qla2x00_mark_device_lost(vha, sess, 1, 1);
1166
1167 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1168 sess->disc_state = DSC_DELETE_PEND;
1169 sess->last_rscn_gen = sess->rscn_gen;
1170 sess->last_login_gen = sess->login_gen;
1171
1172 if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
1173 !(sess->nvme_flag & NVME_FLAG_DELETING)) {
1174 sess->nvme_flag |= NVME_FLAG_DELETING;
1175 schedule_work(&sess->nvme_del_work);
1176 } else {
1177 INIT_WORK(&sess->free_work, qlt_free_session_done);
1178 schedule_work(&sess->free_work);
1179 }
1180 }
1181 EXPORT_SYMBOL(qlt_unreg_sess);
1182
1183 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1184 {
1185 struct qla_hw_data *ha = vha->hw;
1186 struct fc_port *sess = NULL;
1187 uint16_t loop_id;
1188 int res = 0;
1189 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
1190 unsigned long flags;
1191
1192 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1193 if (loop_id == 0xFFFF) {
1194 /* Global event */
1195 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
1196 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1197 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
1198 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1199 } else {
1200 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1201 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
1202 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1203 }
1204
1205 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1206 "Using sess for qla_tgt_reset: %p\n", sess);
1207 if (!sess) {
1208 res = -ESRCH;
1209 return res;
1210 }
1211
1212 ql_dbg(ql_dbg_tgt, vha, 0xe047,
1213 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1214 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
1215 mcmd, loop_id);
1216
1217 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
1218 }
1219
1220 static void qla24xx_chk_fcp_state(struct fc_port *sess)
1221 {
1222 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
1223 sess->logout_on_delete = 0;
1224 sess->logo_ack_needed = 0;
1225 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1226 sess->scan_state = 0;
1227 }
1228 }
1229
1230 void qlt_schedule_sess_for_deletion(struct fc_port *sess)
1231 {
1232 struct qla_tgt *tgt = sess->tgt;
1233 struct qla_hw_data *ha = sess->vha->hw;
1234 unsigned long flags;
1235
1236 if (sess->disc_state == DSC_DELETE_PEND)
1237 return;
1238
1239 if (sess->disc_state == DSC_DELETED) {
1240 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1241 wake_up_all(&tgt->waitQ);
1242 if (sess->vha->fcport_count == 0)
1243 wake_up_all(&sess->vha->fcport_waitQ);
1244
1245 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1246 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
1247 return;
1248 }
1249
1250 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1251 if (sess->deleted == QLA_SESS_DELETED)
1252 sess->logout_on_delete = 0;
1253
1254 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1255 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1256 return;
1257 }
1258 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1259 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1260
1261 sess->disc_state = DSC_DELETE_PEND;
1262
1263 qla24xx_chk_fcp_state(sess);
1264
1265 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1266 "Scheduling sess %p for deletion\n", sess);
1267
1268 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn);
1269 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
1270 }
1271
1272 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
1273 {
1274 struct fc_port *sess;
1275 scsi_qla_host_t *vha = tgt->vha;
1276
1277 list_for_each_entry(sess, &vha->vp_fcports, list) {
1278 if (sess->se_sess)
1279 qlt_schedule_sess_for_deletion(sess);
1280 }
1281
1282 /* At this point tgt could be already dead */
1283 }
1284
1285 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1286 uint16_t *loop_id)
1287 {
1288 struct qla_hw_data *ha = vha->hw;
1289 dma_addr_t gid_list_dma;
1290 struct gid_list_info *gid_list;
1291 char *id_iter;
1292 int res, rc, i;
1293 uint16_t entries;
1294
1295 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1296 &gid_list_dma, GFP_KERNEL);
1297 if (!gid_list) {
1298 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1299 "qla_target(%d): DMA Alloc failed of %u\n",
1300 vha->vp_idx, qla2x00_gid_list_size(ha));
1301 return -ENOMEM;
1302 }
1303
1304 /* Get list of logged in devices */
1305 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
1306 if (rc != QLA_SUCCESS) {
1307 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1308 "qla_target(%d): get_id_list() failed: %x\n",
1309 vha->vp_idx, rc);
1310 res = -EBUSY;
1311 goto out_free_id_list;
1312 }
1313
1314 id_iter = (char *)gid_list;
1315 res = -ENOENT;
1316 for (i = 0; i < entries; i++) {
1317 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1318 if ((gid->al_pa == s_id[2]) &&
1319 (gid->area == s_id[1]) &&
1320 (gid->domain == s_id[0])) {
1321 *loop_id = le16_to_cpu(gid->loop_id);
1322 res = 0;
1323 break;
1324 }
1325 id_iter += ha->gid_list_info_size;
1326 }
1327
1328 out_free_id_list:
1329 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1330 gid_list, gid_list_dma);
1331 return res;
1332 }
1333
1334 /*
1335 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1336 * Caller must put it.
1337 */
1338 static struct fc_port *qlt_create_sess(
1339 struct scsi_qla_host *vha,
1340 fc_port_t *fcport,
1341 bool local)
1342 {
1343 struct qla_hw_data *ha = vha->hw;
1344 struct fc_port *sess = fcport;
1345 unsigned long flags;
1346
1347 if (vha->vha_tgt.qla_tgt->tgt_stop)
1348 return NULL;
1349
1350 if (fcport->se_sess) {
1351 if (!kref_get_unless_zero(&sess->sess_kref)) {
1352 ql_dbg(ql_dbg_disc, vha, 0x20f6,
1353 "%s: kref_get_unless_zero failed for %8phC\n",
1354 __func__, sess->port_name);
1355 return NULL;
1356 }
1357 return fcport;
1358 }
1359 sess->tgt = vha->vha_tgt.qla_tgt;
1360 sess->local = local;
1361
1362 /*
1363 * Under normal circumstances we want to logout from firmware when
1364 * session eventually ends and release corresponding nport handle.
1365 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
1366 * code will adjust these flags as necessary.
1367 */
1368 sess->logout_on_delete = 1;
1369 sess->keep_nport_handle = 0;
1370 sess->logout_completed = 0;
1371
1372 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1373 &fcport->port_name[0], sess) < 0) {
1374 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
1375 "(%d) %8phC check_initiator_node_acl failed\n",
1376 vha->vp_idx, fcport->port_name);
1377 return NULL;
1378 } else {
1379 kref_init(&fcport->sess_kref);
1380 /*
1381 * Take an extra reference to ->sess_kref here to handle
1382 * fc_port access across ->tgt.sess_lock reaquire.
1383 */
1384 if (!kref_get_unless_zero(&sess->sess_kref)) {
1385 ql_dbg(ql_dbg_disc, vha, 0x20f7,
1386 "%s: kref_get_unless_zero failed for %8phC\n",
1387 __func__, sess->port_name);
1388 return NULL;
1389 }
1390
1391 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1392 if (!IS_SW_RESV_ADDR(sess->d_id))
1393 vha->vha_tgt.qla_tgt->sess_count++;
1394
1395 qlt_do_generation_tick(vha, &sess->generation);
1396 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1397 }
1398
1399 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1400 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1401 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1402 vha->vha_tgt.qla_tgt->sess_count);
1403
1404 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
1405 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1406 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1407 vha->vp_idx, local ? "local " : "", fcport->port_name,
1408 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1409 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
1410
1411 return sess;
1412 }
1413
1414 /*
1415 * max_gen - specifies maximum session generation
1416 * at which this deletion requestion is still valid
1417 */
1418 void
1419 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
1420 {
1421 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1422 struct fc_port *sess = fcport;
1423 unsigned long flags;
1424
1425 if (!vha->hw->tgt.tgt_ops)
1426 return;
1427
1428 if (!tgt)
1429 return;
1430
1431 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
1432 if (tgt->tgt_stop) {
1433 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1434 return;
1435 }
1436 if (!sess->se_sess) {
1437 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1438 return;
1439 }
1440
1441 if (max_gen - sess->generation < 0) {
1442 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1443 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1444 "Ignoring stale deletion request for se_sess %p / sess %p"
1445 " for port %8phC, req_gen %d, sess_gen %d\n",
1446 sess->se_sess, sess, sess->port_name, max_gen,
1447 sess->generation);
1448 return;
1449 }
1450
1451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1452
1453 sess->local = 1;
1454 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1455 qlt_schedule_sess_for_deletion(sess);
1456 }
1457
1458 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1459 {
1460 struct qla_hw_data *ha = tgt->ha;
1461 unsigned long flags;
1462 int res;
1463 /*
1464 * We need to protect against race, when tgt is freed before or
1465 * inside wake_up()
1466 */
1467 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1468 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1469 "tgt %p, sess_count=%d\n",
1470 tgt, tgt->sess_count);
1471 res = (tgt->sess_count == 0);
1472 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1473
1474 return res;
1475 }
1476
1477 /* Called by tcm_qla2xxx configfs code */
1478 int qlt_stop_phase1(struct qla_tgt *tgt)
1479 {
1480 struct scsi_qla_host *vha = tgt->vha;
1481 struct qla_hw_data *ha = tgt->ha;
1482 unsigned long flags;
1483
1484 mutex_lock(&qla_tgt_mutex);
1485 if (!vha->fc_vport) {
1486 struct Scsi_Host *sh = vha->host;
1487 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1488 bool npiv_vports;
1489
1490 spin_lock_irqsave(sh->host_lock, flags);
1491 npiv_vports = (fc_host->npiv_vports_inuse);
1492 spin_unlock_irqrestore(sh->host_lock, flags);
1493
1494 if (npiv_vports) {
1495 mutex_unlock(&qla_tgt_mutex);
1496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1497 "NPIV is in use. Can not stop target\n");
1498 return -EPERM;
1499 }
1500 }
1501 if (tgt->tgt_stop || tgt->tgt_stopped) {
1502 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1503 "Already in tgt->tgt_stop or tgt_stopped state\n");
1504 mutex_unlock(&qla_tgt_mutex);
1505 return -EPERM;
1506 }
1507
1508 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1509 vha->host_no, vha);
1510 /*
1511 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1512 * Lock is needed, because we still can get an incoming packet.
1513 */
1514 mutex_lock(&vha->vha_tgt.tgt_mutex);
1515 tgt->tgt_stop = 1;
1516 qlt_clear_tgt_db(tgt);
1517 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1518 mutex_unlock(&qla_tgt_mutex);
1519
1520 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1521 "Waiting for sess works (tgt %p)", tgt);
1522 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1523 while (!list_empty(&tgt->sess_works_list)) {
1524 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1525 flush_scheduled_work();
1526 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1527 }
1528 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1529
1530 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1531 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
1532
1533 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1534
1535 /* Big hammer */
1536 if (!ha->flags.host_shutting_down &&
1537 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
1538 qlt_disable_vha(vha);
1539
1540 /* Wait for sessions to clear out (just in case) */
1541 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1542 return 0;
1543 }
1544 EXPORT_SYMBOL(qlt_stop_phase1);
1545
1546 /* Called by tcm_qla2xxx configfs code */
1547 void qlt_stop_phase2(struct qla_tgt *tgt)
1548 {
1549 scsi_qla_host_t *vha = tgt->vha;
1550
1551 if (tgt->tgt_stopped) {
1552 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1553 "Already in tgt->tgt_stopped state\n");
1554 dump_stack();
1555 return;
1556 }
1557 if (!tgt->tgt_stop) {
1558 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1559 "%s: phase1 stop is not completed\n", __func__);
1560 dump_stack();
1561 return;
1562 }
1563
1564 mutex_lock(&vha->vha_tgt.tgt_mutex);
1565 tgt->tgt_stop = 0;
1566 tgt->tgt_stopped = 1;
1567 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1568
1569 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
1570 tgt);
1571 }
1572 EXPORT_SYMBOL(qlt_stop_phase2);
1573
1574 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1575 static void qlt_release(struct qla_tgt *tgt)
1576 {
1577 scsi_qla_host_t *vha = tgt->vha;
1578 void *node;
1579 u64 key = 0;
1580 u16 i;
1581 struct qla_qpair_hint *h;
1582 struct qla_hw_data *ha = vha->hw;
1583
1584 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1585 !tgt->tgt_stopped)
1586 qlt_stop_phase1(tgt);
1587
1588 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
1589 qlt_stop_phase2(tgt);
1590
1591 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1592 unsigned long flags;
1593
1594 h = &tgt->qphints[i];
1595 if (h->qpair) {
1596 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1597 list_del(&h->hint_elem);
1598 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1599 h->qpair = NULL;
1600 }
1601 }
1602 kfree(tgt->qphints);
1603 mutex_lock(&qla_tgt_mutex);
1604 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1605 mutex_unlock(&qla_tgt_mutex);
1606
1607 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1608 btree_remove64(&tgt->lun_qpair_map, key);
1609
1610 btree_destroy64(&tgt->lun_qpair_map);
1611
1612 if (vha->vp_idx)
1613 if (ha->tgt.tgt_ops &&
1614 ha->tgt.tgt_ops->remove_target &&
1615 vha->vha_tgt.target_lport_ptr)
1616 ha->tgt.tgt_ops->remove_target(vha);
1617
1618 vha->vha_tgt.qla_tgt = NULL;
1619
1620 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1621 "Release of tgt %p finished\n", tgt);
1622
1623 kfree(tgt);
1624 }
1625
1626 /* ha->hardware_lock supposed to be held on entry */
1627 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1628 const void *param, unsigned int param_size)
1629 {
1630 struct qla_tgt_sess_work_param *prm;
1631 unsigned long flags;
1632
1633 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1634 if (!prm) {
1635 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1636 "qla_target(%d): Unable to create session "
1637 "work, command will be refused", 0);
1638 return -ENOMEM;
1639 }
1640
1641 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1642 "Scheduling work (type %d, prm %p)"
1643 " to find session for param %p (size %d, tgt %p)\n",
1644 type, prm, param, param_size, tgt);
1645
1646 prm->type = type;
1647 memcpy(&prm->tm_iocb, param, param_size);
1648
1649 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1650 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1651 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1652
1653 schedule_work(&tgt->sess_work);
1654
1655 return 0;
1656 }
1657
1658 /*
1659 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1660 */
1661 static void qlt_send_notify_ack(struct qla_qpair *qpair,
1662 struct imm_ntfy_from_isp *ntfy,
1663 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1664 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1665 {
1666 struct scsi_qla_host *vha = qpair->vha;
1667 struct qla_hw_data *ha = vha->hw;
1668 request_t *pkt;
1669 struct nack_to_isp *nack;
1670
1671 if (!ha->flags.fw_started)
1672 return;
1673
1674 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1675
1676 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
1677 if (!pkt) {
1678 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1679 "qla_target(%d): %s failed: unable to allocate "
1680 "request packet\n", vha->vp_idx, __func__);
1681 return;
1682 }
1683
1684 if (vha->vha_tgt.qla_tgt != NULL)
1685 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1686
1687 pkt->entry_type = NOTIFY_ACK_TYPE;
1688 pkt->entry_count = 1;
1689
1690 nack = (struct nack_to_isp *)pkt;
1691 nack->ox_id = ntfy->ox_id;
1692
1693 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
1694 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1695 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1696 nack->u.isp24.flags = ntfy->u.isp24.flags &
1697 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1698 }
1699 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1700 nack->u.isp24.status = ntfy->u.isp24.status;
1701 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1702 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1703 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1704 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1705 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1706 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1707 nack->u.isp24.srr_reject_code = srr_reject_code;
1708 nack->u.isp24.srr_reject_code_expl = srr_explan;
1709 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1710
1711 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1712 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1713 vha->vp_idx, nack->u.isp24.status);
1714
1715 /* Memory Barrier */
1716 wmb();
1717 qla2x00_start_iocbs(vha, qpair->req);
1718 }
1719
1720 /*
1721 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1722 */
1723 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
1724 struct abts_recv_from_24xx *abts, uint32_t status,
1725 bool ids_reversed)
1726 {
1727 struct scsi_qla_host *vha = qpair->vha;
1728 struct qla_hw_data *ha = vha->hw;
1729 struct abts_resp_to_24xx *resp;
1730 uint32_t f_ctl;
1731 uint8_t *p;
1732
1733 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1734 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1735 ha, abts, status);
1736
1737 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1738 NULL);
1739 if (!resp) {
1740 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1741 "qla_target(%d): %s failed: unable to allocate "
1742 "request packet", vha->vp_idx, __func__);
1743 return;
1744 }
1745
1746 resp->entry_type = ABTS_RESP_24XX;
1747 resp->entry_count = 1;
1748 resp->nport_handle = abts->nport_handle;
1749 resp->vp_index = vha->vp_idx;
1750 resp->sof_type = abts->sof_type;
1751 resp->exchange_address = abts->exchange_address;
1752 resp->fcp_hdr_le = abts->fcp_hdr_le;
1753 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1754 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1755 F_CTL_SEQ_INITIATIVE);
1756 p = (uint8_t *)&f_ctl;
1757 resp->fcp_hdr_le.f_ctl[0] = *p++;
1758 resp->fcp_hdr_le.f_ctl[1] = *p++;
1759 resp->fcp_hdr_le.f_ctl[2] = *p;
1760 if (ids_reversed) {
1761 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1762 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1763 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1764 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1765 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1766 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1767 } else {
1768 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1769 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1770 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1771 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1772 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1773 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1774 }
1775 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1776 if (status == FCP_TMF_CMPL) {
1777 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1778 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1779 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1780 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1781 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1782 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1783 } else {
1784 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1785 resp->payload.ba_rjt.reason_code =
1786 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1787 /* Other bytes are zero */
1788 }
1789
1790 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1791
1792 /* Memory Barrier */
1793 wmb();
1794 if (qpair->reqq_start_iocbs)
1795 qpair->reqq_start_iocbs(qpair);
1796 else
1797 qla2x00_start_iocbs(vha, qpair->req);
1798 }
1799
1800 /*
1801 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1802 */
1803 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1804 struct abts_resp_from_24xx_fw *entry)
1805 {
1806 struct ctio7_to_24xx *ctio;
1807
1808 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1809 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1810
1811 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
1812 vha->hw->base_qpair, NULL);
1813 if (ctio == NULL) {
1814 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1815 "qla_target(%d): %s failed: unable to allocate "
1816 "request packet\n", vha->vp_idx, __func__);
1817 return;
1818 }
1819
1820 /*
1821 * We've got on entrance firmware's response on by us generated
1822 * ABTS response. So, in it ID fields are reversed.
1823 */
1824
1825 ctio->entry_type = CTIO_TYPE7;
1826 ctio->entry_count = 1;
1827 ctio->nport_handle = entry->nport_handle;
1828 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1829 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1830 ctio->vp_index = vha->vp_idx;
1831 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1832 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1833 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1834 ctio->exchange_addr = entry->exchange_addr_to_abort;
1835 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1836 CTIO7_FLAGS_TERMINATE);
1837 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
1838
1839 /* Memory Barrier */
1840 wmb();
1841 qla2x00_start_iocbs(vha, vha->req);
1842
1843 qlt_24xx_send_abts_resp(vha->hw->base_qpair,
1844 (struct abts_recv_from_24xx *)entry,
1845 FCP_TMF_CMPL, true);
1846 }
1847
1848 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1849 {
1850 struct qla_tgt_sess_op *op;
1851 struct qla_tgt_cmd *cmd;
1852 unsigned long flags;
1853
1854 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1855 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1856 if (tag == op->atio.u.isp24.exchange_addr) {
1857 op->aborted = true;
1858 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1859 return 1;
1860 }
1861 }
1862
1863 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1864 if (tag == op->atio.u.isp24.exchange_addr) {
1865 op->aborted = true;
1866 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1867 return 1;
1868 }
1869 }
1870
1871 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1872 if (tag == cmd->atio.u.isp24.exchange_addr) {
1873 cmd->aborted = 1;
1874 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1875 return 1;
1876 }
1877 }
1878 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1879
1880 return 0;
1881 }
1882
1883 /* drop cmds for the given lun
1884 * XXX only looks for cmds on the port through which lun reset was recieved
1885 * XXX does not go through the list of other port (which may have cmds
1886 * for the same lun)
1887 */
1888 static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1889 u64 lun, uint8_t *s_id)
1890 {
1891 struct qla_tgt_sess_op *op;
1892 struct qla_tgt_cmd *cmd;
1893 uint32_t key;
1894 unsigned long flags;
1895
1896 key = sid_to_key(s_id);
1897 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1898 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1899 uint32_t op_key;
1900 u64 op_lun;
1901
1902 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1903 op_lun = scsilun_to_int(
1904 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1905 if (op_key == key && op_lun == lun)
1906 op->aborted = true;
1907 }
1908
1909 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1910 uint32_t op_key;
1911 u64 op_lun;
1912
1913 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1914 op_lun = scsilun_to_int(
1915 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1916 if (op_key == key && op_lun == lun)
1917 op->aborted = true;
1918 }
1919
1920 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1921 uint32_t cmd_key;
1922 u64 cmd_lun;
1923
1924 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1925 cmd_lun = scsilun_to_int(
1926 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1927 if (cmd_key == key && cmd_lun == lun)
1928 cmd->aborted = 1;
1929 }
1930 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1931 }
1932
1933 /* ha->hardware_lock supposed to be held on entry */
1934 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1935 struct abts_recv_from_24xx *abts, struct fc_port *sess)
1936 {
1937 struct qla_hw_data *ha = vha->hw;
1938 struct qla_tgt_mgmt_cmd *mcmd;
1939 int rc;
1940
1941 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1942 /* send TASK_ABORT response immediately */
1943 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false);
1944 return 0;
1945 }
1946
1947 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1948 "qla_target(%d): task abort (tag=%d)\n",
1949 vha->vp_idx, abts->exchange_addr_to_abort);
1950
1951 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1952 if (mcmd == NULL) {
1953 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1954 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1955 vha->vp_idx, __func__);
1956 return -ENOMEM;
1957 }
1958 memset(mcmd, 0, sizeof(*mcmd));
1959
1960 mcmd->sess = sess;
1961 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1962 mcmd->reset_count = ha->base_qpair->chip_reset;
1963 mcmd->tmr_func = QLA_TGT_ABTS;
1964 mcmd->qpair = ha->base_qpair;
1965 mcmd->vha = vha;
1966
1967 /*
1968 * LUN is looked up by target-core internally based on the passed
1969 * abts->exchange_addr_to_abort tag.
1970 */
1971 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func,
1972 abts->exchange_addr_to_abort);
1973 if (rc != 0) {
1974 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1975 "qla_target(%d): tgt_ops->handle_tmr()"
1976 " failed: %d", vha->vp_idx, rc);
1977 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1978 return -EFAULT;
1979 }
1980
1981 return 0;
1982 }
1983
1984 /*
1985 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1986 */
1987 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1988 struct abts_recv_from_24xx *abts)
1989 {
1990 struct qla_hw_data *ha = vha->hw;
1991 struct fc_port *sess;
1992 uint32_t tag = abts->exchange_addr_to_abort;
1993 uint8_t s_id[3];
1994 int rc;
1995 unsigned long flags;
1996
1997 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1998 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1999 "qla_target(%d): ABTS: Abort Sequence not "
2000 "supported\n", vha->vp_idx);
2001 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2002 false);
2003 return;
2004 }
2005
2006 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2007 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2008 "qla_target(%d): ABTS: Unknown Exchange "
2009 "Address received\n", vha->vp_idx);
2010 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2011 false);
2012 return;
2013 }
2014
2015 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2016 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2017 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
2018 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
2019 le32_to_cpu(abts->fcp_hdr_le.parameter));
2020
2021 s_id[0] = abts->fcp_hdr_le.s_id[2];
2022 s_id[1] = abts->fcp_hdr_le.s_id[1];
2023 s_id[2] = abts->fcp_hdr_le.s_id[0];
2024
2025 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2026 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2027 if (!sess) {
2028 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2029 "qla_target(%d): task abort for non-existent session\n",
2030 vha->vp_idx);
2031 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2032
2033 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2034 false);
2035 return;
2036 }
2037 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2038
2039
2040 if (sess->deleted) {
2041 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2042 false);
2043 return;
2044 }
2045
2046 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2047 if (rc != 0) {
2048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2049 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2050 vha->vp_idx, rc);
2051 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2052 false);
2053 return;
2054 }
2055 }
2056
2057 /*
2058 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2059 */
2060 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2061 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2062 {
2063 struct scsi_qla_host *ha = mcmd->vha;
2064 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2065 struct ctio7_to_24xx *ctio;
2066 uint16_t temp;
2067
2068 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2069 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2070 ha, atio, resp_code);
2071
2072
2073 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2074 if (ctio == NULL) {
2075 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2076 "qla_target(%d): %s failed: unable to allocate "
2077 "request packet\n", ha->vp_idx, __func__);
2078 return;
2079 }
2080
2081 ctio->entry_type = CTIO_TYPE7;
2082 ctio->entry_count = 1;
2083 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2084 ctio->nport_handle = mcmd->sess->loop_id;
2085 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2086 ctio->vp_index = ha->vp_idx;
2087 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2088 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2089 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2090 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2091 temp = (atio->u.isp24.attr << 9)|
2092 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2093 ctio->u.status1.flags = cpu_to_le16(temp);
2094 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2095 ctio->u.status1.ox_id = cpu_to_le16(temp);
2096 ctio->u.status1.scsi_status =
2097 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2098 ctio->u.status1.response_len = cpu_to_le16(8);
2099 ctio->u.status1.sense_data[0] = resp_code;
2100
2101 /* Memory Barrier */
2102 wmb();
2103 if (qpair->reqq_start_iocbs)
2104 qpair->reqq_start_iocbs(qpair);
2105 else
2106 qla2x00_start_iocbs(ha, qpair->req);
2107 }
2108
2109 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2110 {
2111 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2112 }
2113 EXPORT_SYMBOL(qlt_free_mcmd);
2114
2115 /*
2116 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2117 * reacquire
2118 */
2119 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
2120 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2121 {
2122 struct atio_from_isp *atio = &cmd->atio;
2123 struct ctio7_to_24xx *ctio;
2124 uint16_t temp;
2125 struct scsi_qla_host *vha = cmd->vha;
2126
2127 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2128 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2129 "sense_key=%02x, asc=%02x, ascq=%02x",
2130 vha, atio, scsi_status, sense_key, asc, ascq);
2131
2132 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2133 if (!ctio) {
2134 ql_dbg(ql_dbg_async, vha, 0x3067,
2135 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2136 vha->host_no, __func__);
2137 goto out;
2138 }
2139
2140 ctio->entry_type = CTIO_TYPE7;
2141 ctio->entry_count = 1;
2142 ctio->handle = QLA_TGT_SKIP_HANDLE;
2143 ctio->nport_handle = cmd->sess->loop_id;
2144 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2145 ctio->vp_index = vha->vp_idx;
2146 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2147 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2148 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2149 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2150 temp = (atio->u.isp24.attr << 9) |
2151 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2152 ctio->u.status1.flags = cpu_to_le16(temp);
2153 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2154 ctio->u.status1.ox_id = cpu_to_le16(temp);
2155 ctio->u.status1.scsi_status =
2156 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2157 ctio->u.status1.response_len = cpu_to_le16(18);
2158 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2159
2160 if (ctio->u.status1.residual != 0)
2161 ctio->u.status1.scsi_status |=
2162 cpu_to_le16(SS_RESIDUAL_UNDER);
2163
2164 /* Response code and sense key */
2165 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2166 (&ctio->u.status1.sense_data)[0]);
2167 /* Additional sense length */
2168 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2169 /* ASC and ASCQ */
2170 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2171 (&ctio->u.status1.sense_data)[3]);
2172
2173 /* Memory Barrier */
2174 wmb();
2175
2176 if (qpair->reqq_start_iocbs)
2177 qpair->reqq_start_iocbs(qpair);
2178 else
2179 qla2x00_start_iocbs(vha, qpair->req);
2180
2181 out:
2182 return;
2183 }
2184
2185 /* callback from target fabric module code */
2186 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2187 {
2188 struct scsi_qla_host *vha = mcmd->sess->vha;
2189 struct qla_hw_data *ha = vha->hw;
2190 unsigned long flags;
2191 struct qla_qpair *qpair = mcmd->qpair;
2192
2193 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2194 "TM response mcmd (%p) status %#x state %#x",
2195 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2196
2197 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2198
2199 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
2200 /*
2201 * Either the port is not online or this request was from
2202 * previous life, just abort the processing.
2203 */
2204 ql_dbg(ql_dbg_async, vha, 0xe100,
2205 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2206 vha->flags.online, qla2x00_reset_active(vha),
2207 mcmd->reset_count, qpair->chip_reset);
2208 ha->tgt.tgt_ops->free_mcmd(mcmd);
2209 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2210 return;
2211 }
2212
2213 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2214 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2215 ELS_LOGO ||
2216 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2217 ELS_PRLO ||
2218 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2219 ELS_TPRLO) {
2220 ql_dbg(ql_dbg_disc, vha, 0x2106,
2221 "TM response logo %phC status %#x state %#x",
2222 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2223 mcmd->flags);
2224 qlt_schedule_sess_for_deletion(mcmd->sess);
2225 } else {
2226 qlt_send_notify_ack(vha->hw->base_qpair,
2227 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2228 }
2229 } else {
2230 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
2231 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
2232 mcmd->fc_tm_rsp, false);
2233 else
2234 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2235 mcmd->fc_tm_rsp);
2236 }
2237 /*
2238 * Make the callback for ->free_mcmd() to queue_work() and invoke
2239 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2240 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2241 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2242 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2243 * qlt_xmit_tm_rsp() returns here..
2244 */
2245 ha->tgt.tgt_ops->free_mcmd(mcmd);
2246 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2247 }
2248 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2249
2250 /* No locks */
2251 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2252 {
2253 struct qla_tgt_cmd *cmd = prm->cmd;
2254
2255 BUG_ON(cmd->sg_cnt == 0);
2256
2257 prm->sg = (struct scatterlist *)cmd->sg;
2258 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg,
2259 cmd->sg_cnt, cmd->dma_data_direction);
2260 if (unlikely(prm->seg_cnt == 0))
2261 goto out_err;
2262
2263 prm->cmd->sg_mapped = 1;
2264
2265 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2266 /*
2267 * If greater than four sg entries then we need to allocate
2268 * the continuation entries
2269 */
2270 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
2271 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2272 QLA_TGT_DATASEGS_PER_CMD_24XX,
2273 QLA_TGT_DATASEGS_PER_CONT_24XX);
2274 } else {
2275 /* DIF */
2276 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2277 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2278 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2279 prm->tot_dsds = prm->seg_cnt;
2280 } else
2281 prm->tot_dsds = prm->seg_cnt;
2282
2283 if (cmd->prot_sg_cnt) {
2284 prm->prot_sg = cmd->prot_sg;
2285 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev,
2286 cmd->prot_sg, cmd->prot_sg_cnt,
2287 cmd->dma_data_direction);
2288 if (unlikely(prm->prot_seg_cnt == 0))
2289 goto out_err;
2290
2291 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2292 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2293 /* Dif Bundling not support here */
2294 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2295 cmd->blk_sz);
2296 prm->tot_dsds += prm->prot_seg_cnt;
2297 } else
2298 prm->tot_dsds += prm->prot_seg_cnt;
2299 }
2300 }
2301
2302 return 0;
2303
2304 out_err:
2305 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2306 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2307 0, prm->cmd->sg_cnt);
2308 return -1;
2309 }
2310
2311 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2312 {
2313 struct qla_hw_data *ha;
2314 struct qla_qpair *qpair;
2315 if (!cmd->sg_mapped)
2316 return;
2317
2318 qpair = cmd->qpair;
2319
2320 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt,
2321 cmd->dma_data_direction);
2322 cmd->sg_mapped = 0;
2323
2324 if (cmd->prot_sg_cnt)
2325 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
2326 cmd->dma_data_direction);
2327
2328 if (!cmd->ctx)
2329 return;
2330 ha = vha->hw;
2331 if (cmd->ctx_dsd_alloced)
2332 qla2x00_clean_dsd_pool(ha, cmd->ctx);
2333
2334 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2335 }
2336
2337 static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2338 uint32_t req_cnt)
2339 {
2340 uint32_t cnt;
2341 struct req_que *req = qpair->req;
2342
2343 if (req->cnt < (req_cnt + 2)) {
2344 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2345 RD_REG_DWORD_RELAXED(req->req_q_out));
2346
2347 if (req->ring_index < cnt)
2348 req->cnt = cnt - req->ring_index;
2349 else
2350 req->cnt = req->length - (req->ring_index - cnt);
2351
2352 if (unlikely(req->cnt < (req_cnt + 2)))
2353 return -EAGAIN;
2354 }
2355
2356 req->cnt -= req_cnt;
2357
2358 return 0;
2359 }
2360
2361 /*
2362 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2363 */
2364 static inline void *qlt_get_req_pkt(struct req_que *req)
2365 {
2366 /* Adjust ring index. */
2367 req->ring_index++;
2368 if (req->ring_index == req->length) {
2369 req->ring_index = 0;
2370 req->ring_ptr = req->ring;
2371 } else {
2372 req->ring_ptr++;
2373 }
2374 return (cont_entry_t *)req->ring_ptr;
2375 }
2376
2377 /* ha->hardware_lock supposed to be held on entry */
2378 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2379 {
2380 uint32_t h;
2381 int index;
2382 uint8_t found = 0;
2383 struct req_que *req = qpair->req;
2384
2385 h = req->current_outstanding_cmd;
2386
2387 for (index = 1; index < req->num_outstanding_cmds; index++) {
2388 h++;
2389 if (h == req->num_outstanding_cmds)
2390 h = 1;
2391
2392 if (h == QLA_TGT_SKIP_HANDLE)
2393 continue;
2394
2395 if (!req->outstanding_cmds[h]) {
2396 found = 1;
2397 break;
2398 }
2399 }
2400
2401 if (found) {
2402 req->current_outstanding_cmd = h;
2403 } else {
2404 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2405 "qla_target(%d): Ran out of empty cmd slots\n",
2406 qpair->vha->vp_idx);
2407 h = QLA_TGT_NULL_HANDLE;
2408 }
2409
2410 return h;
2411 }
2412
2413 /* ha->hardware_lock supposed to be held on entry */
2414 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2415 struct qla_tgt_prm *prm)
2416 {
2417 uint32_t h;
2418 struct ctio7_to_24xx *pkt;
2419 struct atio_from_isp *atio = &prm->cmd->atio;
2420 uint16_t temp;
2421
2422 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2423 prm->pkt = pkt;
2424 memset(pkt, 0, sizeof(*pkt));
2425
2426 pkt->entry_type = CTIO_TYPE7;
2427 pkt->entry_count = (uint8_t)prm->req_cnt;
2428 pkt->vp_index = prm->cmd->vp_idx;
2429
2430 h = qlt_make_handle(qpair);
2431 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2432 /*
2433 * CTIO type 7 from the firmware doesn't provide a way to
2434 * know the initiator's LOOP ID, hence we can't find
2435 * the session and, so, the command.
2436 */
2437 return -EAGAIN;
2438 } else
2439 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2440
2441 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2442 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2443 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2444 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2445 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2446 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2447 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2448 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2449 temp = atio->u.isp24.attr << 9;
2450 pkt->u.status0.flags |= cpu_to_le16(temp);
2451 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2452 pkt->u.status0.ox_id = cpu_to_le16(temp);
2453 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2454
2455 return 0;
2456 }
2457
2458 /*
2459 * ha->hardware_lock supposed to be held on entry. We have already made sure
2460 * that there is sufficient amount of request entries to not drop it.
2461 */
2462 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2463 {
2464 int cnt;
2465 uint32_t *dword_ptr;
2466
2467 /* Build continuation packets */
2468 while (prm->seg_cnt > 0) {
2469 cont_a64_entry_t *cont_pkt64 =
2470 (cont_a64_entry_t *)qlt_get_req_pkt(
2471 prm->cmd->qpair->req);
2472
2473 /*
2474 * Make sure that from cont_pkt64 none of
2475 * 64-bit specific fields used for 32-bit
2476 * addressing. Cast to (cont_entry_t *) for
2477 * that.
2478 */
2479
2480 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2481
2482 cont_pkt64->entry_count = 1;
2483 cont_pkt64->sys_define = 0;
2484
2485 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2486 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2487
2488 /* Load continuation entry data segments */
2489 for (cnt = 0;
2490 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2491 cnt++, prm->seg_cnt--) {
2492 *dword_ptr++ =
2493 cpu_to_le32(pci_dma_lo32
2494 (sg_dma_address(prm->sg)));
2495 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2496 (sg_dma_address(prm->sg)));
2497 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2498
2499 prm->sg = sg_next(prm->sg);
2500 }
2501 }
2502 }
2503
2504 /*
2505 * ha->hardware_lock supposed to be held on entry. We have already made sure
2506 * that there is sufficient amount of request entries to not drop it.
2507 */
2508 static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2509 {
2510 int cnt;
2511 uint32_t *dword_ptr;
2512 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2513
2514 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2515
2516 /* Setup packet address segment pointer */
2517 dword_ptr = pkt24->u.status0.dseg_0_address;
2518
2519 /* Set total data segment count */
2520 if (prm->seg_cnt)
2521 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2522
2523 if (prm->seg_cnt == 0) {
2524 /* No data transfer */
2525 *dword_ptr++ = 0;
2526 *dword_ptr = 0;
2527 return;
2528 }
2529
2530 /* If scatter gather */
2531
2532 /* Load command entry data segments */
2533 for (cnt = 0;
2534 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2535 cnt++, prm->seg_cnt--) {
2536 *dword_ptr++ =
2537 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2538
2539 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2540 sg_dma_address(prm->sg)));
2541
2542 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2543
2544 prm->sg = sg_next(prm->sg);
2545 }
2546
2547 qlt_load_cont_data_segments(prm);
2548 }
2549
2550 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2551 {
2552 return cmd->bufflen > 0;
2553 }
2554
2555 static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2556 {
2557 struct qla_tgt_cmd *cmd;
2558 struct scsi_qla_host *vha;
2559
2560 /* asc 0x10=dif error */
2561 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2562 cmd = prm->cmd;
2563 vha = cmd->vha;
2564 /* ASCQ */
2565 switch (prm->sense_buffer[13]) {
2566 case 1:
2567 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
2568 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2569 "se_cmd=%p tag[%x]",
2570 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2571 cmd->atio.u.isp24.exchange_addr);
2572 break;
2573 case 2:
2574 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
2575 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2576 "se_cmd=%p tag[%x]",
2577 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2578 cmd->atio.u.isp24.exchange_addr);
2579 break;
2580 case 3:
2581 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
2582 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2583 "se_cmd=%p tag[%x]",
2584 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2585 cmd->atio.u.isp24.exchange_addr);
2586 break;
2587 default:
2588 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
2589 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2590 "se_cmd=%p tag[%x]",
2591 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2592 cmd->atio.u.isp24.exchange_addr);
2593 break;
2594 }
2595 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
2596 }
2597 }
2598
2599 /*
2600 * Called without ha->hardware_lock held
2601 */
2602 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2603 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2604 uint32_t *full_req_cnt)
2605 {
2606 struct se_cmd *se_cmd = &cmd->se_cmd;
2607 struct qla_qpair *qpair = cmd->qpair;
2608
2609 prm->cmd = cmd;
2610 prm->tgt = cmd->tgt;
2611 prm->pkt = NULL;
2612 prm->rq_result = scsi_status;
2613 prm->sense_buffer = &cmd->sense_buffer[0];
2614 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2615 prm->sg = NULL;
2616 prm->seg_cnt = -1;
2617 prm->req_cnt = 1;
2618 prm->residual = 0;
2619 prm->add_status_pkt = 0;
2620 prm->prot_sg = NULL;
2621 prm->prot_seg_cnt = 0;
2622 prm->tot_dsds = 0;
2623
2624 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2625 if (qlt_pci_map_calc_cnt(prm) != 0)
2626 return -EAGAIN;
2627 }
2628
2629 *full_req_cnt = prm->req_cnt;
2630
2631 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2632 prm->residual = se_cmd->residual_count;
2633 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
2634 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2635 prm->residual, se_cmd->tag,
2636 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2637 cmd->bufflen, prm->rq_result);
2638 prm->rq_result |= SS_RESIDUAL_UNDER;
2639 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2640 prm->residual = se_cmd->residual_count;
2641 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
2642 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2643 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2644 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2645 prm->rq_result |= SS_RESIDUAL_OVER;
2646 }
2647
2648 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2649 /*
2650 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2651 * ignored in *xmit_response() below
2652 */
2653 if (qlt_has_data(cmd)) {
2654 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2655 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2656 (prm->rq_result != 0))) {
2657 prm->add_status_pkt = 1;
2658 (*full_req_cnt)++;
2659 }
2660 }
2661 }
2662
2663 return 0;
2664 }
2665
2666 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2667 int sending_sense)
2668 {
2669 if (cmd->qpair->enable_class_2)
2670 return 0;
2671
2672 if (sending_sense)
2673 return cmd->conf_compl_supported;
2674 else
2675 return cmd->qpair->enable_explicit_conf &&
2676 cmd->conf_compl_supported;
2677 }
2678
2679 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2680 struct qla_tgt_prm *prm)
2681 {
2682 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2683 (uint32_t)sizeof(ctio->u.status1.sense_data));
2684 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2685 if (qlt_need_explicit_conf(prm->cmd, 0)) {
2686 ctio->u.status0.flags |= cpu_to_le16(
2687 CTIO7_FLAGS_EXPLICIT_CONFORM |
2688 CTIO7_FLAGS_CONFORM_REQ);
2689 }
2690 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2691 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2692 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2693 int i;
2694
2695 if (qlt_need_explicit_conf(prm->cmd, 1)) {
2696 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2697 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2698 "Skipping EXPLICIT_CONFORM and "
2699 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2700 "non GOOD status\n");
2701 goto skip_explict_conf;
2702 }
2703 ctio->u.status1.flags |= cpu_to_le16(
2704 CTIO7_FLAGS_EXPLICIT_CONFORM |
2705 CTIO7_FLAGS_CONFORM_REQ);
2706 }
2707 skip_explict_conf:
2708 ctio->u.status1.flags &=
2709 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2710 ctio->u.status1.flags |=
2711 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2712 ctio->u.status1.scsi_status |=
2713 cpu_to_le16(SS_SENSE_LEN_VALID);
2714 ctio->u.status1.sense_length =
2715 cpu_to_le16(prm->sense_buffer_len);
2716 for (i = 0; i < prm->sense_buffer_len/4; i++)
2717 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2718 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2719
2720 qlt_print_dif_err(prm);
2721
2722 } else {
2723 ctio->u.status1.flags &=
2724 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2725 ctio->u.status1.flags |=
2726 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2727 ctio->u.status1.sense_length = 0;
2728 memset(ctio->u.status1.sense_data, 0,
2729 sizeof(ctio->u.status1.sense_data));
2730 }
2731
2732 /* Sense with len > 24, is it possible ??? */
2733 }
2734
2735 static inline int
2736 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2737 {
2738 switch (se_cmd->prot_op) {
2739 case TARGET_PROT_DOUT_INSERT:
2740 case TARGET_PROT_DIN_STRIP:
2741 if (ql2xenablehba_err_chk >= 1)
2742 return 1;
2743 break;
2744 case TARGET_PROT_DOUT_PASS:
2745 case TARGET_PROT_DIN_PASS:
2746 if (ql2xenablehba_err_chk >= 2)
2747 return 1;
2748 break;
2749 case TARGET_PROT_DIN_INSERT:
2750 case TARGET_PROT_DOUT_STRIP:
2751 return 1;
2752 default:
2753 break;
2754 }
2755 return 0;
2756 }
2757
2758 static inline int
2759 qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2760 {
2761 switch (se_cmd->prot_op) {
2762 case TARGET_PROT_DIN_INSERT:
2763 case TARGET_PROT_DOUT_INSERT:
2764 case TARGET_PROT_DIN_STRIP:
2765 case TARGET_PROT_DOUT_STRIP:
2766 case TARGET_PROT_DIN_PASS:
2767 case TARGET_PROT_DOUT_PASS:
2768 return 1;
2769 default:
2770 return 0;
2771 }
2772 return 0;
2773 }
2774
2775 /*
2776 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
2777 */
2778 static void
2779 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2780 uint16_t *pfw_prot_opts)
2781 {
2782 struct se_cmd *se_cmd = &cmd->se_cmd;
2783 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2784 scsi_qla_host_t *vha = cmd->tgt->vha;
2785 struct qla_hw_data *ha = vha->hw;
2786 uint32_t t32 = 0;
2787
2788 /*
2789 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
2790 * have been immplemented by TCM, before AppTag is avail.
2791 * Look for modesense_handlers[]
2792 */
2793 ctx->app_tag = 0;
2794 ctx->app_tag_mask[0] = 0x0;
2795 ctx->app_tag_mask[1] = 0x0;
2796
2797 if (IS_PI_UNINIT_CAPABLE(ha)) {
2798 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2799 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2800 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2801 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2802 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2803 }
2804
2805 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2806
2807 switch (se_cmd->prot_type) {
2808 case TARGET_DIF_TYPE0_PROT:
2809 /*
2810 * No check for ql2xenablehba_err_chk, as it
2811 * would be an I/O error if hba tag generation
2812 * is not done.
2813 */
2814 ctx->ref_tag = cpu_to_le32(lba);
2815 /* enable ALL bytes of the ref tag */
2816 ctx->ref_tag_mask[0] = 0xff;
2817 ctx->ref_tag_mask[1] = 0xff;
2818 ctx->ref_tag_mask[2] = 0xff;
2819 ctx->ref_tag_mask[3] = 0xff;
2820 break;
2821 case TARGET_DIF_TYPE1_PROT:
2822 /*
2823 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2824 * REF tag, and 16 bit app tag.
2825 */
2826 ctx->ref_tag = cpu_to_le32(lba);
2827 if (!qla_tgt_ref_mask_check(se_cmd) ||
2828 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2829 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2830 break;
2831 }
2832 /* enable ALL bytes of the ref tag */
2833 ctx->ref_tag_mask[0] = 0xff;
2834 ctx->ref_tag_mask[1] = 0xff;
2835 ctx->ref_tag_mask[2] = 0xff;
2836 ctx->ref_tag_mask[3] = 0xff;
2837 break;
2838 case TARGET_DIF_TYPE2_PROT:
2839 /*
2840 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2841 * tag has to match LBA in CDB + N
2842 */
2843 ctx->ref_tag = cpu_to_le32(lba);
2844 if (!qla_tgt_ref_mask_check(se_cmd) ||
2845 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2846 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2847 break;
2848 }
2849 /* enable ALL bytes of the ref tag */
2850 ctx->ref_tag_mask[0] = 0xff;
2851 ctx->ref_tag_mask[1] = 0xff;
2852 ctx->ref_tag_mask[2] = 0xff;
2853 ctx->ref_tag_mask[3] = 0xff;
2854 break;
2855 case TARGET_DIF_TYPE3_PROT:
2856 /* For TYPE 3 protection: 16 bit GUARD only */
2857 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2858 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2859 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2860 break;
2861 }
2862 }
2863
2864 static inline int
2865 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
2866 {
2867 uint32_t *cur_dsd;
2868 uint32_t transfer_length = 0;
2869 uint32_t data_bytes;
2870 uint32_t dif_bytes;
2871 uint8_t bundling = 1;
2872 struct crc_context *crc_ctx_pkt = NULL;
2873 struct qla_hw_data *ha;
2874 struct ctio_crc2_to_fw *pkt;
2875 dma_addr_t crc_ctx_dma;
2876 uint16_t fw_prot_opts = 0;
2877 struct qla_tgt_cmd *cmd = prm->cmd;
2878 struct se_cmd *se_cmd = &cmd->se_cmd;
2879 uint32_t h;
2880 struct atio_from_isp *atio = &prm->cmd->atio;
2881 struct qla_tc_param tc;
2882 uint16_t t16;
2883 scsi_qla_host_t *vha = cmd->vha;
2884
2885 ha = vha->hw;
2886
2887 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
2888 prm->pkt = pkt;
2889 memset(pkt, 0, sizeof(*pkt));
2890
2891 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
2892 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2893 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2894 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2895
2896 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2897 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2898 bundling = 0;
2899
2900 /* Compute dif len and adjust data len to incude protection */
2901 data_bytes = cmd->bufflen;
2902 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2903
2904 switch (se_cmd->prot_op) {
2905 case TARGET_PROT_DIN_INSERT:
2906 case TARGET_PROT_DOUT_STRIP:
2907 transfer_length = data_bytes;
2908 if (cmd->prot_sg_cnt)
2909 data_bytes += dif_bytes;
2910 break;
2911 case TARGET_PROT_DIN_STRIP:
2912 case TARGET_PROT_DOUT_INSERT:
2913 case TARGET_PROT_DIN_PASS:
2914 case TARGET_PROT_DOUT_PASS:
2915 transfer_length = data_bytes + dif_bytes;
2916 break;
2917 default:
2918 BUG();
2919 break;
2920 }
2921
2922 if (!qlt_hba_err_chk_enabled(se_cmd))
2923 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2924 /* HBA error checking enabled */
2925 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2926 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2927 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2928 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2929 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2930 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2931 }
2932
2933 switch (se_cmd->prot_op) {
2934 case TARGET_PROT_DIN_INSERT:
2935 case TARGET_PROT_DOUT_INSERT:
2936 fw_prot_opts |= PO_MODE_DIF_INSERT;
2937 break;
2938 case TARGET_PROT_DIN_STRIP:
2939 case TARGET_PROT_DOUT_STRIP:
2940 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2941 break;
2942 case TARGET_PROT_DIN_PASS:
2943 case TARGET_PROT_DOUT_PASS:
2944 fw_prot_opts |= PO_MODE_DIF_PASS;
2945 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2946 break;
2947 default:/* Normal Request */
2948 fw_prot_opts |= PO_MODE_DIF_PASS;
2949 break;
2950 }
2951
2952 /* ---- PKT ---- */
2953 /* Update entry type to indicate Command Type CRC_2 IOCB */
2954 pkt->entry_type = CTIO_CRC2;
2955 pkt->entry_count = 1;
2956 pkt->vp_index = cmd->vp_idx;
2957
2958 h = qlt_make_handle(qpair);
2959 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2960 /*
2961 * CTIO type 7 from the firmware doesn't provide a way to
2962 * know the initiator's LOOP ID, hence we can't find
2963 * the session and, so, the command.
2964 */
2965 return -EAGAIN;
2966 } else
2967 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2968
2969 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2970 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2971 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2972 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2973 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2974 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2975 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2976 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2977
2978 /* silence compile warning */
2979 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2980 pkt->ox_id = cpu_to_le16(t16);
2981
2982 t16 = (atio->u.isp24.attr << 9);
2983 pkt->flags |= cpu_to_le16(t16);
2984 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2985
2986 /* Set transfer direction */
2987 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2988 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2989 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2990 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2991
2992 pkt->dseg_count = prm->tot_dsds;
2993 /* Fibre channel byte count */
2994 pkt->transfer_length = cpu_to_le32(transfer_length);
2995
2996 /* ----- CRC context -------- */
2997
2998 /* Allocate CRC context from global pool */
2999 crc_ctx_pkt = cmd->ctx =
3000 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
3001
3002 if (!crc_ctx_pkt)
3003 goto crc_queuing_error;
3004
3005 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3006 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3007
3008 /* Set handle */
3009 crc_ctx_pkt->handle = pkt->handle;
3010
3011 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
3012
3013 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
3014 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
3015 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
3016
3017 if (!bundling) {
3018 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
3019 } else {
3020 /*
3021 * Configure Bundling if we need to fetch interlaving
3022 * protection PCI accesses
3023 */
3024 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3025 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3026 crc_ctx_pkt->u.bundling.dseg_count =
3027 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3028 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
3029 }
3030
3031 /* Finish the common fields of CRC pkt */
3032 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3033 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3034 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
3035 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
3036
3037 memset((uint8_t *)&tc, 0 , sizeof(tc));
3038 tc.vha = vha;
3039 tc.blk_sz = cmd->blk_sz;
3040 tc.bufflen = cmd->bufflen;
3041 tc.sg = cmd->sg;
3042 tc.prot_sg = cmd->prot_sg;
3043 tc.ctx = crc_ctx_pkt;
3044 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
3045
3046 /* Walks data segments */
3047 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
3048
3049 if (!bundling && prm->prot_seg_cnt) {
3050 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
3051 prm->tot_dsds, &tc))
3052 goto crc_queuing_error;
3053 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
3054 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
3055 goto crc_queuing_error;
3056
3057 if (bundling && prm->prot_seg_cnt) {
3058 /* Walks dif segments */
3059 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
3060
3061 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3062 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
3063 prm->prot_seg_cnt, &tc))
3064 goto crc_queuing_error;
3065 }
3066 return QLA_SUCCESS;
3067
3068 crc_queuing_error:
3069 /* Cleanup will be performed by the caller */
3070 qpair->req->outstanding_cmds[h] = NULL;
3071
3072 return QLA_FUNCTION_FAILED;
3073 }
3074
3075 /*
3076 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3077 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3078 */
3079 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3080 uint8_t scsi_status)
3081 {
3082 struct scsi_qla_host *vha = cmd->vha;
3083 struct qla_qpair *qpair = cmd->qpair;
3084 struct ctio7_to_24xx *pkt;
3085 struct qla_tgt_prm prm;
3086 uint32_t full_req_cnt = 0;
3087 unsigned long flags = 0;
3088 int res;
3089
3090 if (cmd->sess && cmd->sess->deleted) {
3091 cmd->state = QLA_TGT_STATE_PROCESSED;
3092 if (cmd->sess->logout_completed)
3093 /* no need to terminate. FW already freed exchange. */
3094 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3095 else
3096 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
3097 return 0;
3098 }
3099
3100 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
3101 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
3102 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3103 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3104 &cmd->se_cmd, qpair->id);
3105
3106 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3107 &full_req_cnt);
3108 if (unlikely(res != 0)) {
3109 return res;
3110 }
3111
3112 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3113
3114 if (xmit_type == QLA_TGT_XMIT_STATUS)
3115 qpair->tgt_counters.core_qla_snd_status++;
3116 else
3117 qpair->tgt_counters.core_qla_que_buf++;
3118
3119 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
3120 /*
3121 * Either the port is not online or this request was from
3122 * previous life, just abort the processing.
3123 */
3124 cmd->state = QLA_TGT_STATE_PROCESSED;
3125 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3126 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3127 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3128 vha->flags.online, qla2x00_reset_active(vha),
3129 cmd->reset_count, qpair->chip_reset);
3130 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3131 return 0;
3132 }
3133
3134 /* Does F/W have an IOCBs for this request */
3135 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
3136 if (unlikely(res))
3137 goto out_unmap_unlock;
3138
3139 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3140 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3141 else
3142 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3143 if (unlikely(res != 0)) {
3144 qpair->req->cnt += full_req_cnt;
3145 goto out_unmap_unlock;
3146 }
3147
3148 pkt = (struct ctio7_to_24xx *)prm.pkt;
3149
3150 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3151 pkt->u.status0.flags |=
3152 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
3153 CTIO7_FLAGS_STATUS_MODE_0);
3154
3155 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3156 qlt_load_data_segments(&prm);
3157
3158 if (prm.add_status_pkt == 0) {
3159 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3160 pkt->u.status0.scsi_status =
3161 cpu_to_le16(prm.rq_result);
3162 pkt->u.status0.residual =
3163 cpu_to_le32(prm.residual);
3164 pkt->u.status0.flags |= cpu_to_le16(
3165 CTIO7_FLAGS_SEND_STATUS);
3166 if (qlt_need_explicit_conf(cmd, 0)) {
3167 pkt->u.status0.flags |=
3168 cpu_to_le16(
3169 CTIO7_FLAGS_EXPLICIT_CONFORM |
3170 CTIO7_FLAGS_CONFORM_REQ);
3171 }
3172 }
3173
3174 } else {
3175 /*
3176 * We have already made sure that there is sufficient
3177 * amount of request entries to not drop HW lock in
3178 * req_pkt().
3179 */
3180 struct ctio7_to_24xx *ctio =
3181 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3182 qpair->req);
3183
3184 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
3185 "Building additional status packet 0x%p.\n",
3186 ctio);
3187
3188 /*
3189 * T10Dif: ctio_crc2_to_fw overlay ontop of
3190 * ctio7_to_24xx
3191 */
3192 memcpy(ctio, pkt, sizeof(*ctio));
3193 /* reset back to CTIO7 */
3194 ctio->entry_count = 1;
3195 ctio->entry_type = CTIO_TYPE7;
3196 ctio->dseg_count = 0;
3197 ctio->u.status1.flags &= ~cpu_to_le16(
3198 CTIO7_FLAGS_DATA_IN);
3199
3200 /* Real finish is ctio_m1's finish */
3201 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
3202 pkt->u.status0.flags |= cpu_to_le16(
3203 CTIO7_FLAGS_DONT_RET_CTIO);
3204
3205 /* qlt_24xx_init_ctio_to_isp will correct
3206 * all neccessary fields that's part of CTIO7.
3207 * There should be no residual of CTIO-CRC2 data.
3208 */
3209 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3210 &prm);
3211 }
3212 } else
3213 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3214
3215
3216 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
3217 cmd->cmd_sent_to_fw = 1;
3218
3219 /* Memory Barrier */
3220 wmb();
3221 if (qpair->reqq_start_iocbs)
3222 qpair->reqq_start_iocbs(qpair);
3223 else
3224 qla2x00_start_iocbs(vha, qpair->req);
3225 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3226
3227 return 0;
3228
3229 out_unmap_unlock:
3230 qlt_unmap_sg(vha, cmd);
3231 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3232
3233 return res;
3234 }
3235 EXPORT_SYMBOL(qlt_xmit_response);
3236
3237 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3238 {
3239 struct ctio7_to_24xx *pkt;
3240 struct scsi_qla_host *vha = cmd->vha;
3241 struct qla_tgt *tgt = cmd->tgt;
3242 struct qla_tgt_prm prm;
3243 unsigned long flags = 0;
3244 int res = 0;
3245 struct qla_qpair *qpair = cmd->qpair;
3246
3247 memset(&prm, 0, sizeof(prm));
3248 prm.cmd = cmd;
3249 prm.tgt = tgt;
3250 prm.sg = NULL;
3251 prm.req_cnt = 1;
3252
3253 /* Calculate number of entries and segments required */
3254 if (qlt_pci_map_calc_cnt(&prm) != 0)
3255 return -EAGAIN;
3256
3257 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3258 (cmd->sess && cmd->sess->deleted)) {
3259 /*
3260 * Either the port is not online or this request was from
3261 * previous life, just abort the processing.
3262 */
3263 cmd->state = QLA_TGT_STATE_NEED_DATA;
3264 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3265 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3266 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3267 vha->flags.online, qla2x00_reset_active(vha),
3268 cmd->reset_count, qpair->chip_reset);
3269 return 0;
3270 }
3271
3272 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3273 /* Does F/W have an IOCBs for this request */
3274 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
3275 if (res != 0)
3276 goto out_unlock_free_unmap;
3277 if (cmd->se_cmd.prot_op)
3278 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3279 else
3280 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3281
3282 if (unlikely(res != 0)) {
3283 qpair->req->cnt += prm.req_cnt;
3284 goto out_unlock_free_unmap;
3285 }
3286
3287 pkt = (struct ctio7_to_24xx *)prm.pkt;
3288 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
3289 CTIO7_FLAGS_STATUS_MODE_0);
3290
3291 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3292 qlt_load_data_segments(&prm);
3293
3294 cmd->state = QLA_TGT_STATE_NEED_DATA;
3295 cmd->cmd_sent_to_fw = 1;
3296
3297 /* Memory Barrier */
3298 wmb();
3299 if (qpair->reqq_start_iocbs)
3300 qpair->reqq_start_iocbs(qpair);
3301 else
3302 qla2x00_start_iocbs(vha, qpair->req);
3303 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3304
3305 return res;
3306
3307 out_unlock_free_unmap:
3308 qlt_unmap_sg(vha, cmd);
3309 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3310
3311 return res;
3312 }
3313 EXPORT_SYMBOL(qlt_rdy_to_xfer);
3314
3315
3316 /*
3317 * it is assumed either hardware_lock or qpair lock is held.
3318 */
3319 static void
3320 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
3321 struct ctio_crc_from_fw *sts)
3322 {
3323 uint8_t *ap = &sts->actual_dif[0];
3324 uint8_t *ep = &sts->expected_dif[0];
3325 uint64_t lba = cmd->se_cmd.t_task_lba;
3326 uint8_t scsi_status, sense_key, asc, ascq;
3327 unsigned long flags;
3328 struct scsi_qla_host *vha = cmd->vha;
3329
3330 cmd->trc_flags |= TRC_DIF_ERR;
3331
3332 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3333 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3334 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
3335
3336 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3337 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3338 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
3339
3340 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3341 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
3342
3343 scsi_status = sense_key = asc = ascq = 0;
3344
3345 /* check appl tag */
3346 if (cmd->e_app_tag != cmd->a_app_tag) {
3347 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3348 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]",
3349 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3350 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3351 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3352 cmd->atio.u.isp24.fcp_hdr.ox_id);
3353
3354 cmd->dif_err_code = DIF_ERR_APP;
3355 scsi_status = SAM_STAT_CHECK_CONDITION;
3356 sense_key = ABORTED_COMMAND;
3357 asc = 0x10;
3358 ascq = 0x2;
3359 }
3360
3361 /* check ref tag */
3362 if (cmd->e_ref_tag != cmd->a_ref_tag) {
3363 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3364 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ",
3365 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3366 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3367 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3368 cmd->atio.u.isp24.fcp_hdr.ox_id);
3369
3370 cmd->dif_err_code = DIF_ERR_REF;
3371 scsi_status = SAM_STAT_CHECK_CONDITION;
3372 sense_key = ABORTED_COMMAND;
3373 asc = 0x10;
3374 ascq = 0x3;
3375 goto out;
3376 }
3377
3378 /* check guard */
3379 if (cmd->e_guard != cmd->a_guard) {
3380 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3381 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]",
3382 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3383 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3384 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3385 cmd->atio.u.isp24.fcp_hdr.ox_id);
3386
3387 cmd->dif_err_code = DIF_ERR_GRD;
3388 scsi_status = SAM_STAT_CHECK_CONDITION;
3389 sense_key = ABORTED_COMMAND;
3390 asc = 0x10;
3391 ascq = 0x1;
3392 }
3393 out:
3394 switch (cmd->state) {
3395 case QLA_TGT_STATE_NEED_DATA:
3396 /* handle_data will load DIF error code */
3397 cmd->state = QLA_TGT_STATE_DATA_IN;
3398 vha->hw->tgt.tgt_ops->handle_data(cmd);
3399 break;
3400 default:
3401 spin_lock_irqsave(&cmd->cmd_lock, flags);
3402 if (cmd->aborted) {
3403 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3404 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3405 break;
3406 }
3407 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3408
3409 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3410 ascq);
3411 /* assume scsi status gets out on the wire.
3412 * Will not wait for completion.
3413 */
3414 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3415 break;
3416 }
3417 }
3418
3419 /* If hardware_lock held on entry, might drop it, then reaquire */
3420 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3421 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3422 struct imm_ntfy_from_isp *ntfy)
3423 {
3424 struct nack_to_isp *nack;
3425 struct qla_hw_data *ha = vha->hw;
3426 request_t *pkt;
3427 int ret = 0;
3428
3429 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3430 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3431
3432 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3433 if (pkt == NULL) {
3434 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3435 "qla_target(%d): %s failed: unable to allocate "
3436 "request packet\n", vha->vp_idx, __func__);
3437 return -ENOMEM;
3438 }
3439
3440 pkt->entry_type = NOTIFY_ACK_TYPE;
3441 pkt->entry_count = 1;
3442 pkt->handle = QLA_TGT_SKIP_HANDLE;
3443
3444 nack = (struct nack_to_isp *)pkt;
3445 nack->ox_id = ntfy->ox_id;
3446
3447 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3448 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3449 nack->u.isp24.flags = ntfy->u.isp24.flags &
3450 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3451 }
3452
3453 /* terminate */
3454 nack->u.isp24.flags |=
3455 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3456
3457 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3458 nack->u.isp24.status = ntfy->u.isp24.status;
3459 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3460 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3461 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3462 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3463 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3464 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3465
3466 qla2x00_start_iocbs(vha, vha->req);
3467 return ret;
3468 }
3469
3470 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3471 struct imm_ntfy_from_isp *imm, int ha_locked)
3472 {
3473 unsigned long flags = 0;
3474 int rc;
3475
3476 if (ha_locked) {
3477 rc = __qlt_send_term_imm_notif(vha, imm);
3478
3479 #if 0 /* Todo */
3480 if (rc == -ENOMEM)
3481 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3482 #else
3483 if (rc) {
3484 }
3485 #endif
3486 goto done;
3487 }
3488
3489 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3490 rc = __qlt_send_term_imm_notif(vha, imm);
3491
3492 #if 0 /* Todo */
3493 if (rc == -ENOMEM)
3494 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3495 #endif
3496
3497 done:
3498 if (!ha_locked)
3499 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3500 }
3501
3502 /*
3503 * If hardware_lock held on entry, might drop it, then reaquire
3504 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3505 */
3506 static int __qlt_send_term_exchange(struct qla_qpair *qpair,
3507 struct qla_tgt_cmd *cmd,
3508 struct atio_from_isp *atio)
3509 {
3510 struct scsi_qla_host *vha = qpair->vha;
3511 struct ctio7_to_24xx *ctio24;
3512 struct qla_hw_data *ha = vha->hw;
3513 request_t *pkt;
3514 int ret = 0;
3515 uint16_t temp;
3516
3517 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3518
3519 if (cmd)
3520 vha = cmd->vha;
3521
3522 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
3523 if (pkt == NULL) {
3524 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3525 "qla_target(%d): %s failed: unable to allocate "
3526 "request packet\n", vha->vp_idx, __func__);
3527 return -ENOMEM;
3528 }
3529
3530 if (cmd != NULL) {
3531 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3532 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3533 "qla_target(%d): Terminating cmd %p with "
3534 "incorrect state %d\n", vha->vp_idx, cmd,
3535 cmd->state);
3536 } else
3537 ret = 1;
3538 }
3539
3540 qpair->tgt_counters.num_term_xchg_sent++;
3541 pkt->entry_count = 1;
3542 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3543
3544 ctio24 = (struct ctio7_to_24xx *)pkt;
3545 ctio24->entry_type = CTIO_TYPE7;
3546 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
3547 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3548 ctio24->vp_index = vha->vp_idx;
3549 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3550 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3551 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3552 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3553 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3554 CTIO7_FLAGS_TERMINATE;
3555 ctio24->u.status1.flags = cpu_to_le16(temp);
3556 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3557 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3558
3559 /* Most likely, it isn't needed */
3560 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3561 &atio->u.isp24.fcp_cmnd.add_cdb[
3562 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3563 if (ctio24->u.status1.residual != 0)
3564 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3565
3566 /* Memory Barrier */
3567 wmb();
3568 if (qpair->reqq_start_iocbs)
3569 qpair->reqq_start_iocbs(qpair);
3570 else
3571 qla2x00_start_iocbs(vha, qpair->req);
3572 return ret;
3573 }
3574
3575 static void qlt_send_term_exchange(struct qla_qpair *qpair,
3576 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3577 int ul_abort)
3578 {
3579 struct scsi_qla_host *vha;
3580 unsigned long flags = 0;
3581 int rc;
3582
3583 /* why use different vha? NPIV */
3584 if (cmd)
3585 vha = cmd->vha;
3586 else
3587 vha = qpair->vha;
3588
3589 if (ha_locked) {
3590 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3591 if (rc == -ENOMEM)
3592 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3593 goto done;
3594 }
3595 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3596 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3597 if (rc == -ENOMEM)
3598 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3599
3600 done:
3601 if (cmd && !ul_abort && !cmd->aborted) {
3602 if (cmd->sg_mapped)
3603 qlt_unmap_sg(vha, cmd);
3604 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3605 }
3606
3607 if (!ha_locked)
3608 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3609
3610 return;
3611 }
3612
3613 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3614 {
3615 struct list_head free_list;
3616 struct qla_tgt_cmd *cmd, *tcmd;
3617
3618 vha->hw->tgt.leak_exchg_thresh_hold =
3619 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3620
3621 cmd = tcmd = NULL;
3622 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3623 INIT_LIST_HEAD(&free_list);
3624 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3625
3626 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3627 list_del(&cmd->cmd_list);
3628 /* This cmd was never sent to TCM. There is no need
3629 * to schedule free or call free_cmd
3630 */
3631 qlt_free_cmd(cmd);
3632 vha->hw->tgt.num_qfull_cmds_alloc--;
3633 }
3634 }
3635 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3636 }
3637
3638 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3639 {
3640 uint32_t total_leaked;
3641
3642 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3643
3644 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3645 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3646
3647 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3648 "Chip reset due to exchange starvation: %d/%d.\n",
3649 total_leaked, vha->hw->cur_fw_xcb_count);
3650
3651 if (IS_P3P_TYPE(vha->hw))
3652 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3653 else
3654 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3655 qla2xxx_wake_dpc(vha);
3656 }
3657
3658 }
3659
3660 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3661 {
3662 struct qla_tgt *tgt = cmd->tgt;
3663 struct scsi_qla_host *vha = tgt->vha;
3664 struct se_cmd *se_cmd = &cmd->se_cmd;
3665 unsigned long flags;
3666
3667 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3668 "qla_target(%d): terminating exchange for aborted cmd=%p "
3669 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3670 se_cmd->tag);
3671
3672 spin_lock_irqsave(&cmd->cmd_lock, flags);
3673 if (cmd->aborted) {
3674 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3675 /*
3676 * It's normal to see 2 calls in this path:
3677 * 1) XFER Rdy completion + CMD_T_ABORT
3678 * 2) TCM TMR - drain_state_list
3679 */
3680 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3681 "multiple abort. %p transport_state %x, t_state %x, "
3682 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3683 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
3684 return EIO;
3685 }
3686 cmd->aborted = 1;
3687 cmd->trc_flags |= TRC_ABORT;
3688 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3689
3690 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
3691 return 0;
3692 }
3693 EXPORT_SYMBOL(qlt_abort_cmd);
3694
3695 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3696 {
3697 struct fc_port *sess = cmd->sess;
3698
3699 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3700 "%s: se_cmd[%p] ox_id %04x\n",
3701 __func__, &cmd->se_cmd,
3702 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3703
3704 BUG_ON(cmd->cmd_in_wq);
3705
3706 if (cmd->sg_mapped)
3707 qlt_unmap_sg(cmd->vha, cmd);
3708
3709 if (!cmd->q_full)
3710 qlt_decr_num_pend_cmds(cmd->vha);
3711
3712 BUG_ON(cmd->sg_mapped);
3713 cmd->jiffies_at_free = get_jiffies_64();
3714 if (unlikely(cmd->free_sg))
3715 kfree(cmd->sg);
3716
3717 if (!sess || !sess->se_sess) {
3718 WARN_ON(1);
3719 return;
3720 }
3721 cmd->jiffies_at_free = get_jiffies_64();
3722 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3723 }
3724 EXPORT_SYMBOL(qlt_free_cmd);
3725
3726 /*
3727 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3728 */
3729 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
3730 struct qla_tgt_cmd *cmd, uint32_t status)
3731 {
3732 int term = 0;
3733 struct scsi_qla_host *vha = qpair->vha;
3734
3735 if (cmd->se_cmd.prot_op)
3736 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
3737 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3738 "se_cmd=%p tag[%x] op %#x/%s",
3739 cmd->lba, cmd->lba,
3740 cmd->num_blks, &cmd->se_cmd,
3741 cmd->atio.u.isp24.exchange_addr,
3742 cmd->se_cmd.prot_op,
3743 prot_op_str(cmd->se_cmd.prot_op));
3744
3745 if (ctio != NULL) {
3746 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3747 term = !(c->flags &
3748 cpu_to_le16(OF_TERM_EXCH));
3749 } else
3750 term = 1;
3751
3752 if (term)
3753 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
3754
3755 return term;
3756 }
3757
3758
3759 /* ha->hardware_lock supposed to be held on entry */
3760 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3761 struct rsp_que *rsp, uint32_t handle, void *ctio)
3762 {
3763 struct qla_tgt_cmd *cmd = NULL;
3764 struct req_que *req;
3765 int qid = GET_QID(handle);
3766 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
3767
3768 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3769 return NULL;
3770
3771 if (qid == rsp->req->id) {
3772 req = rsp->req;
3773 } else if (vha->hw->req_q_map[qid]) {
3774 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3775 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3776 vha->vp_idx, rsp->id, handle);
3777 req = vha->hw->req_q_map[qid];
3778 } else {
3779 return NULL;
3780 }
3781
3782 h &= QLA_CMD_HANDLE_MASK;
3783
3784 if (h != QLA_TGT_NULL_HANDLE) {
3785 if (unlikely(h >= req->num_outstanding_cmds)) {
3786 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3787 "qla_target(%d): Wrong handle %x received\n",
3788 vha->vp_idx, handle);
3789 return NULL;
3790 }
3791
3792 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
3793 if (unlikely(cmd == NULL)) {
3794 ql_dbg(ql_dbg_async, vha, 0xe053,
3795 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3796 vha->vp_idx, handle, req->id, rsp->id);
3797 return NULL;
3798 }
3799 req->outstanding_cmds[h] = NULL;
3800 } else if (ctio != NULL) {
3801 /* We can't get loop ID from CTIO7 */
3802 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3803 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3804 "support NULL handles\n", vha->vp_idx);
3805 return NULL;
3806 }
3807
3808 return cmd;
3809 }
3810
3811 /* hardware_lock should be held by caller. */
3812 void
3813 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3814 {
3815 struct qla_hw_data *ha = vha->hw;
3816
3817 if (cmd->sg_mapped)
3818 qlt_unmap_sg(vha, cmd);
3819
3820 /* TODO: fix debug message type and ids. */
3821 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3822 ql_dbg(ql_dbg_io, vha, 0xff00,
3823 "HOST-ABORT: state=PROCESSED.\n");
3824 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3825 cmd->write_data_transferred = 0;
3826 cmd->state = QLA_TGT_STATE_DATA_IN;
3827
3828 ql_dbg(ql_dbg_io, vha, 0xff01,
3829 "HOST-ABORT: state=DATA_IN.\n");
3830
3831 ha->tgt.tgt_ops->handle_data(cmd);
3832 return;
3833 } else {
3834 ql_dbg(ql_dbg_io, vha, 0xff03,
3835 "HOST-ABORT: state=BAD(%d).\n",
3836 cmd->state);
3837 dump_stack();
3838 }
3839
3840 cmd->trc_flags |= TRC_FLUSH;
3841 ha->tgt.tgt_ops->free_cmd(cmd);
3842 }
3843
3844 /*
3845 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3846 */
3847 static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3848 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
3849 {
3850 struct qla_hw_data *ha = vha->hw;
3851 struct se_cmd *se_cmd;
3852 struct qla_tgt_cmd *cmd;
3853 struct qla_qpair *qpair = rsp->qpair;
3854
3855 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3856 /* That could happen only in case of an error/reset/abort */
3857 if (status != CTIO_SUCCESS) {
3858 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3859 "Intermediate CTIO received"
3860 " (status %x)\n", status);
3861 }
3862 return;
3863 }
3864
3865 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
3866 if (cmd == NULL)
3867 return;
3868
3869 se_cmd = &cmd->se_cmd;
3870 cmd->cmd_sent_to_fw = 0;
3871
3872 qlt_unmap_sg(vha, cmd);
3873
3874 if (unlikely(status != CTIO_SUCCESS)) {
3875 switch (status & 0xFFFF) {
3876 case CTIO_LIP_RESET:
3877 case CTIO_TARGET_RESET:
3878 case CTIO_ABORTED:
3879 /* driver request abort via Terminate exchange */
3880 case CTIO_TIMEOUT:
3881 case CTIO_INVALID_RX_ID:
3882 /* They are OK */
3883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3884 "qla_target(%d): CTIO with "
3885 "status %#x received, state %x, se_cmd %p, "
3886 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3887 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3888 status, cmd->state, se_cmd);
3889 break;
3890
3891 case CTIO_PORT_LOGGED_OUT:
3892 case CTIO_PORT_UNAVAILABLE:
3893 {
3894 int logged_out =
3895 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3896
3897 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3898 "qla_target(%d): CTIO with %s status %x "
3899 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3900 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
3901 status, cmd->state, se_cmd);
3902
3903 if (logged_out && cmd->sess) {
3904 /*
3905 * Session is already logged out, but we need
3906 * to notify initiator, who's not aware of this
3907 */
3908 cmd->sess->logout_on_delete = 0;
3909 cmd->sess->send_els_logo = 1;
3910 ql_dbg(ql_dbg_disc, vha, 0x20f8,
3911 "%s %d %8phC post del sess\n",
3912 __func__, __LINE__, cmd->sess->port_name);
3913
3914 qlt_schedule_sess_for_deletion(cmd->sess);
3915 }
3916 break;
3917 }
3918 case CTIO_DIF_ERROR: {
3919 struct ctio_crc_from_fw *crc =
3920 (struct ctio_crc_from_fw *)ctio;
3921 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3922 "qla_target(%d): CTIO with DIF_ERROR status %x "
3923 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3924 "expect_dif[0x%llx]\n",
3925 vha->vp_idx, status, cmd->state, se_cmd,
3926 *((u64 *)&crc->actual_dif[0]),
3927 *((u64 *)&crc->expected_dif[0]));
3928
3929 qlt_handle_dif_error(qpair, cmd, ctio);
3930 return;
3931 }
3932 default:
3933 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
3934 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
3935 vha->vp_idx, status, cmd->state, se_cmd);
3936 break;
3937 }
3938
3939
3940 /* "cmd->aborted" means
3941 * cmd is already aborted/terminated, we don't
3942 * need to terminate again. The exchange is already
3943 * cleaned up/freed at FW level. Just cleanup at driver
3944 * level.
3945 */
3946 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3947 (!cmd->aborted)) {
3948 cmd->trc_flags |= TRC_CTIO_ERR;
3949 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
3950 return;
3951 }
3952 }
3953
3954 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3955 cmd->trc_flags |= TRC_CTIO_DONE;
3956 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3957 cmd->state = QLA_TGT_STATE_DATA_IN;
3958
3959 if (status == CTIO_SUCCESS)
3960 cmd->write_data_transferred = 1;
3961
3962 ha->tgt.tgt_ops->handle_data(cmd);
3963 return;
3964 } else if (cmd->aborted) {
3965 cmd->trc_flags |= TRC_CTIO_ABORTED;
3966 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3967 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
3968 } else {
3969 cmd->trc_flags |= TRC_CTIO_STRANGE;
3970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3971 "qla_target(%d): A command in state (%d) should "
3972 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3973 }
3974
3975 if (unlikely(status != CTIO_SUCCESS) &&
3976 !cmd->aborted) {
3977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3978 dump_stack();
3979 }
3980
3981 ha->tgt.tgt_ops->free_cmd(cmd);
3982 }
3983
3984 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3985 uint8_t task_codes)
3986 {
3987 int fcp_task_attr;
3988
3989 switch (task_codes) {
3990 case ATIO_SIMPLE_QUEUE:
3991 fcp_task_attr = TCM_SIMPLE_TAG;
3992 break;
3993 case ATIO_HEAD_OF_QUEUE:
3994 fcp_task_attr = TCM_HEAD_TAG;
3995 break;
3996 case ATIO_ORDERED_QUEUE:
3997 fcp_task_attr = TCM_ORDERED_TAG;
3998 break;
3999 case ATIO_ACA_QUEUE:
4000 fcp_task_attr = TCM_ACA_TAG;
4001 break;
4002 case ATIO_UNTAGGED:
4003 fcp_task_attr = TCM_SIMPLE_TAG;
4004 break;
4005 default:
4006 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4007 "qla_target: unknown task code %x, use ORDERED instead\n",
4008 task_codes);
4009 fcp_task_attr = TCM_ORDERED_TAG;
4010 break;
4011 }
4012
4013 return fcp_task_attr;
4014 }
4015
4016 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
4017 uint8_t *);
4018 /*
4019 * Process context for I/O path into tcm_qla2xxx code
4020 */
4021 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
4022 {
4023 scsi_qla_host_t *vha = cmd->vha;
4024 struct qla_hw_data *ha = vha->hw;
4025 struct fc_port *sess = cmd->sess;
4026 struct atio_from_isp *atio = &cmd->atio;
4027 unsigned char *cdb;
4028 unsigned long flags;
4029 uint32_t data_length;
4030 int ret, fcp_task_attr, data_dir, bidi = 0;
4031 struct qla_qpair *qpair = cmd->qpair;
4032
4033 cmd->cmd_in_wq = 0;
4034 cmd->trc_flags |= TRC_DO_WORK;
4035
4036 if (cmd->aborted) {
4037 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4038 "cmd with tag %u is aborted\n",
4039 cmd->atio.u.isp24.exchange_addr);
4040 goto out_term;
4041 }
4042
4043 spin_lock_init(&cmd->cmd_lock);
4044 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
4045 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
4046
4047 if (atio->u.isp24.fcp_cmnd.rddata &&
4048 atio->u.isp24.fcp_cmnd.wrdata) {
4049 bidi = 1;
4050 data_dir = DMA_TO_DEVICE;
4051 } else if (atio->u.isp24.fcp_cmnd.rddata)
4052 data_dir = DMA_FROM_DEVICE;
4053 else if (atio->u.isp24.fcp_cmnd.wrdata)
4054 data_dir = DMA_TO_DEVICE;
4055 else
4056 data_dir = DMA_NONE;
4057
4058 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4059 atio->u.isp24.fcp_cmnd.task_attr);
4060 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4061 &atio->u.isp24.fcp_cmnd.add_cdb[
4062 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4063
4064 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4065 fcp_task_attr, data_dir, bidi);
4066 if (ret != 0)
4067 goto out_term;
4068 /*
4069 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4070 */
4071 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4072 ha->tgt.tgt_ops->put_sess(sess);
4073 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4074 return;
4075
4076 out_term:
4077 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
4078 /*
4079 * cmd has not sent to target yet, so pass NULL as the second
4080 * argument to qlt_send_term_exchange() and free the memory here.
4081 */
4082 cmd->trc_flags |= TRC_DO_WORK_ERR;
4083 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4084 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
4085
4086 qlt_decr_num_pend_cmds(vha);
4087 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
4088 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4089
4090 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4091 ha->tgt.tgt_ops->put_sess(sess);
4092 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4093 }
4094
4095 static void qlt_do_work(struct work_struct *work)
4096 {
4097 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
4098 scsi_qla_host_t *vha = cmd->vha;
4099 unsigned long flags;
4100
4101 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4102 list_del(&cmd->cmd_list);
4103 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4104
4105 __qlt_do_work(cmd);
4106 }
4107
4108 void qlt_clr_qp_table(struct scsi_qla_host *vha)
4109 {
4110 unsigned long flags;
4111 struct qla_hw_data *ha = vha->hw;
4112 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4113 void *node;
4114 u64 key = 0;
4115
4116 ql_log(ql_log_info, vha, 0x706c,
4117 "User update Number of Active Qpairs %d\n",
4118 ha->tgt.num_act_qpairs);
4119
4120 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4121
4122 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4123 btree_remove64(&tgt->lun_qpair_map, key);
4124
4125 ha->base_qpair->lun_cnt = 0;
4126 for (key = 0; key < ha->max_qpairs; key++)
4127 if (ha->queue_pair_map[key])
4128 ha->queue_pair_map[key]->lun_cnt = 0;
4129
4130 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4131 }
4132
4133 static void qlt_assign_qpair(struct scsi_qla_host *vha,
4134 struct qla_tgt_cmd *cmd)
4135 {
4136 struct qla_qpair *qpair, *qp;
4137 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4138 struct qla_qpair_hint *h;
4139
4140 if (vha->flags.qpairs_available) {
4141 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4142 if (unlikely(!h)) {
4143 /* spread lun to qpair ratio evently */
4144 int lcnt = 0, rc;
4145 struct scsi_qla_host *base_vha =
4146 pci_get_drvdata(vha->hw->pdev);
4147
4148 qpair = vha->hw->base_qpair;
4149 if (qpair->lun_cnt == 0) {
4150 qpair->lun_cnt++;
4151 h = qla_qpair_to_hint(tgt, qpair);
4152 BUG_ON(!h);
4153 rc = btree_insert64(&tgt->lun_qpair_map,
4154 cmd->unpacked_lun, h, GFP_ATOMIC);
4155 if (rc) {
4156 qpair->lun_cnt--;
4157 ql_log(ql_log_info, vha, 0xd037,
4158 "Unable to insert lun %llx into lun_qpair_map\n",
4159 cmd->unpacked_lun);
4160 }
4161 goto out;
4162 } else {
4163 lcnt = qpair->lun_cnt;
4164 }
4165
4166 h = NULL;
4167 list_for_each_entry(qp, &base_vha->qp_list,
4168 qp_list_elem) {
4169 if (qp->lun_cnt == 0) {
4170 qp->lun_cnt++;
4171 h = qla_qpair_to_hint(tgt, qp);
4172 BUG_ON(!h);
4173 rc = btree_insert64(&tgt->lun_qpair_map,
4174 cmd->unpacked_lun, h, GFP_ATOMIC);
4175 if (rc) {
4176 qp->lun_cnt--;
4177 ql_log(ql_log_info, vha, 0xd038,
4178 "Unable to insert lun %llx into lun_qpair_map\n",
4179 cmd->unpacked_lun);
4180 }
4181 qpair = qp;
4182 goto out;
4183 } else {
4184 if (qp->lun_cnt < lcnt) {
4185 lcnt = qp->lun_cnt;
4186 qpair = qp;
4187 continue;
4188 }
4189 }
4190 }
4191 BUG_ON(!qpair);
4192 qpair->lun_cnt++;
4193 h = qla_qpair_to_hint(tgt, qpair);
4194 BUG_ON(!h);
4195 rc = btree_insert64(&tgt->lun_qpair_map,
4196 cmd->unpacked_lun, h, GFP_ATOMIC);
4197 if (rc) {
4198 qpair->lun_cnt--;
4199 ql_log(ql_log_info, vha, 0xd039,
4200 "Unable to insert lun %llx into lun_qpair_map\n",
4201 cmd->unpacked_lun);
4202 }
4203 }
4204 } else {
4205 h = &tgt->qphints[0];
4206 }
4207 out:
4208 cmd->qpair = h->qpair;
4209 cmd->se_cmd.cpuid = h->cpuid;
4210 }
4211
4212 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
4213 struct fc_port *sess,
4214 struct atio_from_isp *atio)
4215 {
4216 struct se_session *se_sess = sess->se_sess;
4217 struct qla_tgt_cmd *cmd;
4218 int tag;
4219
4220 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4221 if (tag < 0)
4222 return NULL;
4223
4224 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4225 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4226 cmd->cmd_type = TYPE_TGT_CMD;
4227 memcpy(&cmd->atio, atio, sizeof(*atio));
4228 cmd->state = QLA_TGT_STATE_NEW;
4229 cmd->tgt = vha->vha_tgt.qla_tgt;
4230 qlt_incr_num_pend_cmds(vha);
4231 cmd->vha = vha;
4232 cmd->se_cmd.map_tag = tag;
4233 cmd->sess = sess;
4234 cmd->loop_id = sess->loop_id;
4235 cmd->conf_compl_supported = sess->conf_compl_supported;
4236
4237 cmd->trc_flags = 0;
4238 cmd->jiffies_at_alloc = get_jiffies_64();
4239
4240 cmd->unpacked_lun = scsilun_to_int(
4241 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4242 qlt_assign_qpair(vha, cmd);
4243 cmd->reset_count = vha->hw->base_qpair->chip_reset;
4244 cmd->vp_idx = vha->vp_idx;
4245
4246 return cmd;
4247 }
4248
4249 /* ha->hardware_lock supposed to be held on entry */
4250 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4251 struct atio_from_isp *atio)
4252 {
4253 struct qla_hw_data *ha = vha->hw;
4254 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4255 struct fc_port *sess;
4256 struct qla_tgt_cmd *cmd;
4257 unsigned long flags;
4258 port_id_t id;
4259
4260 if (unlikely(tgt->tgt_stop)) {
4261 ql_dbg(ql_dbg_io, vha, 0x3061,
4262 "New command while device %p is shutting down\n", tgt);
4263 return -ENODEV;
4264 }
4265
4266 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2];
4267 id.b.area = atio->u.isp24.fcp_hdr.s_id[1];
4268 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0];
4269 if (IS_SW_RESV_ADDR(id))
4270 return -EBUSY;
4271
4272 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4273 if (unlikely(!sess))
4274 return -EFAULT;
4275
4276 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4277 * session deletion, but it's still in sess_del_work wq */
4278 if (sess->deleted) {
4279 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
4280 "New command while old session %p is being deleted\n",
4281 sess);
4282 return -EFAULT;
4283 }
4284
4285 /*
4286 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4287 */
4288 if (!kref_get_unless_zero(&sess->sess_kref)) {
4289 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
4290 "%s: kref_get fail, %8phC oxid %x \n",
4291 __func__, sess->port_name,
4292 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4293 return -EFAULT;
4294 }
4295
4296 cmd = qlt_get_tag(vha, sess, atio);
4297 if (!cmd) {
4298 ql_dbg(ql_dbg_io, vha, 0x3062,
4299 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4300 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4301 ha->tgt.tgt_ops->put_sess(sess);
4302 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4303 return -EBUSY;
4304 }
4305
4306 cmd->cmd_in_wq = 1;
4307 cmd->trc_flags |= TRC_NEW_CMD;
4308
4309 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4310 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4311 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4312
4313 INIT_WORK(&cmd->work, qlt_do_work);
4314 if (vha->flags.qpairs_available) {
4315 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4316 } else if (ha->msix_count) {
4317 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4318 queue_work_on(smp_processor_id(), qla_tgt_wq,
4319 &cmd->work);
4320 else
4321 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4322 &cmd->work);
4323 } else {
4324 queue_work(qla_tgt_wq, &cmd->work);
4325 }
4326
4327 return 0;
4328 }
4329
4330 /* ha->hardware_lock supposed to be held on entry */
4331 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
4332 int fn, void *iocb, int flags)
4333 {
4334 struct scsi_qla_host *vha = sess->vha;
4335 struct qla_hw_data *ha = vha->hw;
4336 struct qla_tgt_mgmt_cmd *mcmd;
4337 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4338 int res;
4339
4340 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4341 if (!mcmd) {
4342 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4343 "qla_target(%d): Allocation of management "
4344 "command failed, some commands and their data could "
4345 "leak\n", vha->vp_idx);
4346 return -ENOMEM;
4347 }
4348 memset(mcmd, 0, sizeof(*mcmd));
4349 mcmd->sess = sess;
4350
4351 if (iocb) {
4352 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4353 sizeof(mcmd->orig_iocb.imm_ntfy));
4354 }
4355 mcmd->tmr_func = fn;
4356 mcmd->flags = flags;
4357 mcmd->reset_count = ha->base_qpair->chip_reset;
4358 mcmd->qpair = ha->base_qpair;
4359 mcmd->vha = vha;
4360
4361 switch (fn) {
4362 case QLA_TGT_LUN_RESET:
4363 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4364 break;
4365 }
4366
4367 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
4368 if (res != 0) {
4369 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4370 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4371 sess->vha->vp_idx, res);
4372 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4373 return -EFAULT;
4374 }
4375
4376 return 0;
4377 }
4378
4379 /* ha->hardware_lock supposed to be held on entry */
4380 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4381 {
4382 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4383 struct qla_hw_data *ha = vha->hw;
4384 struct fc_port *sess;
4385 u64 unpacked_lun;
4386 int fn;
4387 unsigned long flags;
4388
4389 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4390
4391 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4392 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4393 a->u.isp24.fcp_hdr.s_id);
4394 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4395
4396 unpacked_lun =
4397 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4398
4399 if (sess == NULL || sess->deleted)
4400 return -EFAULT;
4401
4402 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4403 }
4404
4405 /* ha->hardware_lock supposed to be held on entry */
4406 static int __qlt_abort_task(struct scsi_qla_host *vha,
4407 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
4408 {
4409 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4410 struct qla_hw_data *ha = vha->hw;
4411 struct qla_tgt_mgmt_cmd *mcmd;
4412 u64 unpacked_lun;
4413 int rc;
4414
4415 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4416 if (mcmd == NULL) {
4417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4418 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4419 vha->vp_idx, __func__);
4420 return -ENOMEM;
4421 }
4422 memset(mcmd, 0, sizeof(*mcmd));
4423
4424 mcmd->sess = sess;
4425 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4426 sizeof(mcmd->orig_iocb.imm_ntfy));
4427
4428 unpacked_lun =
4429 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4430 mcmd->reset_count = ha->base_qpair->chip_reset;
4431 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
4432 mcmd->qpair = ha->base_qpair;
4433
4434 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
4435 le16_to_cpu(iocb->u.isp2x.seq_id));
4436 if (rc != 0) {
4437 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4438 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4439 vha->vp_idx, rc);
4440 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4441 return -EFAULT;
4442 }
4443
4444 return 0;
4445 }
4446
4447 /* ha->hardware_lock supposed to be held on entry */
4448 static int qlt_abort_task(struct scsi_qla_host *vha,
4449 struct imm_ntfy_from_isp *iocb)
4450 {
4451 struct qla_hw_data *ha = vha->hw;
4452 struct fc_port *sess;
4453 int loop_id;
4454 unsigned long flags;
4455
4456 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4457
4458 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4459 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4460 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4461
4462 if (sess == NULL) {
4463 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4464 "qla_target(%d): task abort for unexisting "
4465 "session\n", vha->vp_idx);
4466 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4467 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4468 }
4469
4470 return __qlt_abort_task(vha, iocb, sess);
4471 }
4472
4473 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4474 {
4475 if (rc != MBS_COMMAND_COMPLETE) {
4476 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4477 "%s: se_sess %p / sess %p from"
4478 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4479 " LOGO failed: %#x\n",
4480 __func__,
4481 fcport->se_sess,
4482 fcport,
4483 fcport->port_name, fcport->loop_id,
4484 fcport->d_id.b.domain, fcport->d_id.b.area,
4485 fcport->d_id.b.al_pa, rc);
4486 }
4487
4488 fcport->logout_completed = 1;
4489 }
4490
4491 /*
4492 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4493 *
4494 * Schedules sessions with matching port_id/loop_id but different wwn for
4495 * deletion. Returns existing session with matching wwn if present.
4496 * Null otherwise.
4497 */
4498 struct fc_port *
4499 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
4500 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
4501 {
4502 struct fc_port *sess = NULL, *other_sess;
4503 uint64_t other_wwn;
4504
4505 *conflict_sess = NULL;
4506
4507 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
4508
4509 other_wwn = wwn_to_u64(other_sess->port_name);
4510
4511 if (wwn == other_wwn) {
4512 WARN_ON(sess);
4513 sess = other_sess;
4514 continue;
4515 }
4516
4517 /* find other sess with nport_id collision */
4518 if (port_id.b24 == other_sess->d_id.b24) {
4519 if (loop_id != other_sess->loop_id) {
4520 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
4521 "Invalidating sess %p loop_id %d wwn %llx.\n",
4522 other_sess, other_sess->loop_id, other_wwn);
4523
4524 /*
4525 * logout_on_delete is set by default, but another
4526 * session that has the same s_id/loop_id combo
4527 * might have cleared it when requested this session
4528 * deletion, so don't touch it
4529 */
4530 qlt_schedule_sess_for_deletion(other_sess);
4531 } else {
4532 /*
4533 * Another wwn used to have our s_id/loop_id
4534 * kill the session, but don't free the loop_id
4535 */
4536 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
4537 "Invalidating sess %p loop_id %d wwn %llx.\n",
4538 other_sess, other_sess->loop_id, other_wwn);
4539
4540 other_sess->keep_nport_handle = 1;
4541 if (other_sess->disc_state != DSC_DELETED)
4542 *conflict_sess = other_sess;
4543 qlt_schedule_sess_for_deletion(other_sess);
4544 }
4545 continue;
4546 }
4547
4548 /* find other sess with nport handle collision */
4549 if ((loop_id == other_sess->loop_id) &&
4550 (loop_id != FC_NO_LOOP_ID)) {
4551 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
4552 "Invalidating sess %p loop_id %d wwn %llx.\n",
4553 other_sess, other_sess->loop_id, other_wwn);
4554
4555 /* Same loop_id but different s_id
4556 * Ok to kill and logout */
4557 qlt_schedule_sess_for_deletion(other_sess);
4558 }
4559 }
4560
4561 return sess;
4562 }
4563
4564 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4565 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4566 {
4567 struct qla_tgt_sess_op *op;
4568 struct qla_tgt_cmd *cmd;
4569 uint32_t key;
4570 int count = 0;
4571 unsigned long flags;
4572
4573 key = (((u32)s_id->b.domain << 16) |
4574 ((u32)s_id->b.area << 8) |
4575 ((u32)s_id->b.al_pa));
4576
4577 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4578 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4579 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4580
4581 if (op_key == key) {
4582 op->aborted = true;
4583 count++;
4584 }
4585 }
4586
4587 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4588 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4589 if (op_key == key) {
4590 op->aborted = true;
4591 count++;
4592 }
4593 }
4594
4595 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4596 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4597 if (cmd_key == key) {
4598 cmd->aborted = 1;
4599 count++;
4600 }
4601 }
4602 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4603
4604 return count;
4605 }
4606
4607 static int qlt_handle_login(struct scsi_qla_host *vha,
4608 struct imm_ntfy_from_isp *iocb)
4609 {
4610 struct fc_port *sess = NULL, *conflict_sess = NULL;
4611 uint64_t wwn;
4612 port_id_t port_id;
4613 uint16_t loop_id, wd3_lo;
4614 int res = 0;
4615 struct qlt_plogi_ack_t *pla;
4616 unsigned long flags;
4617
4618 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4619
4620 port_id.b.domain = iocb->u.isp24.port_id[2];
4621 port_id.b.area = iocb->u.isp24.port_id[1];
4622 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4623 port_id.b.rsvd_1 = 0;
4624
4625 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4626
4627 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4628 abort_cmds_for_s_id(vha, &port_id);
4629
4630 if (wwn) {
4631 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4632 sess = qlt_find_sess_invalidate_other(vha, wwn,
4633 port_id, loop_id, &conflict_sess);
4634 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4635 }
4636
4637 if (IS_SW_RESV_ADDR(port_id)) {
4638 res = 1;
4639 goto out;
4640 }
4641
4642 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4643 if (!pla) {
4644 qlt_send_term_imm_notif(vha, iocb, 1);
4645 goto out;
4646 }
4647
4648 if (conflict_sess) {
4649 conflict_sess->login_gen++;
4650 qlt_plogi_ack_link(vha, pla, conflict_sess,
4651 QLT_PLOGI_LINK_CONFLICT);
4652 }
4653
4654 if (!sess) {
4655 pla->ref_count++;
4656 ql_dbg(ql_dbg_disc, vha, 0xffff,
4657 "%s %d %8phC post new sess\n",
4658 __func__, __LINE__, iocb->u.isp24.port_name);
4659 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4660 qla24xx_post_newsess_work(vha, &port_id,
4661 iocb->u.isp24.port_name,
4662 iocb->u.isp24.u.plogi.node_name,
4663 pla, FC4_TYPE_UNKNOWN);
4664 else
4665 qla24xx_post_newsess_work(vha, &port_id,
4666 iocb->u.isp24.port_name, NULL,
4667 pla, FC4_TYPE_UNKNOWN);
4668
4669 goto out;
4670 }
4671
4672 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4673 sess->d_id = port_id;
4674 sess->login_gen++;
4675
4676 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4677 sess->fw_login_state = DSC_LS_PRLI_PEND;
4678 sess->local = 0;
4679 sess->loop_id = loop_id;
4680 sess->d_id = port_id;
4681 sess->fw_login_state = DSC_LS_PRLI_PEND;
4682 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4683
4684 if (wd3_lo & BIT_7)
4685 sess->conf_compl_supported = 1;
4686
4687 if ((wd3_lo & BIT_4) == 0)
4688 sess->port_type = FCT_INITIATOR;
4689 else
4690 sess->port_type = FCT_TARGET;
4691
4692 } else
4693 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4694
4695
4696 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4697 "%s %d %8phC DS %d\n",
4698 __func__, __LINE__, sess->port_name, sess->disc_state);
4699
4700 switch (sess->disc_state) {
4701 case DSC_DELETED:
4702 qlt_plogi_ack_unref(vha, pla);
4703 break;
4704
4705 default:
4706 /*
4707 * Under normal circumstances we want to release nport handle
4708 * during LOGO process to avoid nport handle leaks inside FW.
4709 * The exception is when LOGO is done while another PLOGI with
4710 * the same nport handle is waiting as might be the case here.
4711 * Note: there is always a possibily of a race where session
4712 * deletion has already started for other reasons (e.g. ACL
4713 * removal) and now PLOGI arrives:
4714 * 1. if PLOGI arrived in FW after nport handle has been freed,
4715 * FW must have assigned this PLOGI a new/same handle and we
4716 * can proceed ACK'ing it as usual when session deletion
4717 * completes.
4718 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4719 * bit reached it, the handle has now been released. We'll
4720 * get an error when we ACK this PLOGI. Nothing will be sent
4721 * back to initiator. Initiator should eventually retry
4722 * PLOGI and situation will correct itself.
4723 */
4724 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4725 (sess->d_id.b24 == port_id.b24));
4726
4727 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4728 "%s %d %8phC post del sess\n",
4729 __func__, __LINE__, sess->port_name);
4730
4731
4732 qlt_schedule_sess_for_deletion(sess);
4733 break;
4734 }
4735 out:
4736 return res;
4737 }
4738
4739 /*
4740 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4741 */
4742 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4743 struct imm_ntfy_from_isp *iocb)
4744 {
4745 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4746 struct qla_hw_data *ha = vha->hw;
4747 struct fc_port *sess = NULL, *conflict_sess = NULL;
4748 uint64_t wwn;
4749 port_id_t port_id;
4750 uint16_t loop_id;
4751 uint16_t wd3_lo;
4752 int res = 0;
4753 unsigned long flags;
4754
4755 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4756
4757 port_id.b.domain = iocb->u.isp24.port_id[2];
4758 port_id.b.area = iocb->u.isp24.port_id[1];
4759 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4760 port_id.b.rsvd_1 = 0;
4761
4762 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4763
4764 ql_dbg(ql_dbg_disc, vha, 0xf026,
4765 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4766 vha->vp_idx, iocb->u.isp24.port_id[2],
4767 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4768 iocb->u.isp24.status_subcode, loop_id,
4769 iocb->u.isp24.port_name);
4770
4771 /* res = 1 means ack at the end of thread
4772 * res = 0 means ack async/later.
4773 */
4774 switch (iocb->u.isp24.status_subcode) {
4775 case ELS_PLOGI:
4776 res = qlt_handle_login(vha, iocb);
4777 break;
4778
4779 case ELS_PRLI:
4780 if (N2N_TOPO(ha)) {
4781 sess = qla2x00_find_fcport_by_wwpn(vha,
4782 iocb->u.isp24.port_name, 1);
4783
4784 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4785 ql_dbg(ql_dbg_disc, vha, 0xffff,
4786 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4787 __func__, __LINE__,
4788 iocb->u.isp24.port_name);
4789 qlt_send_term_imm_notif(vha, iocb, 1);
4790 break;
4791 }
4792
4793 res = qlt_handle_login(vha, iocb);
4794 break;
4795 }
4796
4797 if (IS_SW_RESV_ADDR(port_id)) {
4798 res = 1;
4799 break;
4800 }
4801
4802 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4803
4804 if (wwn) {
4805 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4806 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4807 loop_id, &conflict_sess);
4808 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4809 }
4810
4811 if (conflict_sess) {
4812 switch (conflict_sess->disc_state) {
4813 case DSC_DELETED:
4814 case DSC_DELETE_PEND:
4815 break;
4816 default:
4817 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4818 "PRLI with conflicting sess %p port %8phC\n",
4819 conflict_sess, conflict_sess->port_name);
4820 conflict_sess->fw_login_state =
4821 DSC_LS_PORT_UNAVAIL;
4822 qlt_send_term_imm_notif(vha, iocb, 1);
4823 res = 0;
4824 break;
4825 }
4826 }
4827
4828 if (sess != NULL) {
4829 bool delete = false;
4830 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4831 switch (sess->fw_login_state) {
4832 case DSC_LS_PLOGI_PEND:
4833 case DSC_LS_PLOGI_COMP:
4834 case DSC_LS_PRLI_COMP:
4835 break;
4836 default:
4837 delete = true;
4838 break;
4839 }
4840
4841 switch (sess->disc_state) {
4842 case DSC_LOGIN_PEND:
4843 case DSC_GPDB:
4844 case DSC_GPSC:
4845 case DSC_UPD_FCPORT:
4846 case DSC_LOGIN_COMPLETE:
4847 case DSC_ADISC:
4848 delete = false;
4849 break;
4850 default:
4851 break;
4852 }
4853
4854 if (delete) {
4855 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4856 flags);
4857 /*
4858 * Impatient initiator sent PRLI before last
4859 * PLOGI could finish. Will force him to re-try,
4860 * while last one finishes.
4861 */
4862 ql_log(ql_log_warn, sess->vha, 0xf095,
4863 "sess %p PRLI received, before plogi ack.\n",
4864 sess);
4865 qlt_send_term_imm_notif(vha, iocb, 1);
4866 res = 0;
4867 break;
4868 }
4869
4870 /*
4871 * This shouldn't happen under normal circumstances,
4872 * since we have deleted the old session during PLOGI
4873 */
4874 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
4875 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4876 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4877
4878 sess->local = 0;
4879 sess->loop_id = loop_id;
4880 sess->d_id = port_id;
4881 sess->fw_login_state = DSC_LS_PRLI_PEND;
4882
4883 if (wd3_lo & BIT_7)
4884 sess->conf_compl_supported = 1;
4885
4886 if ((wd3_lo & BIT_4) == 0)
4887 sess->port_type = FCT_INITIATOR;
4888 else
4889 sess->port_type = FCT_TARGET;
4890
4891 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4892 }
4893 res = 1; /* send notify ack */
4894
4895 /* Make session global (not used in fabric mode) */
4896 if (ha->current_topology != ISP_CFG_F) {
4897 if (sess) {
4898 ql_dbg(ql_dbg_disc, vha, 0x20fa,
4899 "%s %d %8phC post nack\n",
4900 __func__, __LINE__, sess->port_name);
4901 qla24xx_post_nack_work(vha, sess, iocb,
4902 SRB_NACK_PRLI);
4903 res = 0;
4904 } else {
4905 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4906 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4907 qla2xxx_wake_dpc(vha);
4908 }
4909 } else {
4910 if (sess) {
4911 ql_dbg(ql_dbg_disc, vha, 0x20fb,
4912 "%s %d %8phC post nack\n",
4913 __func__, __LINE__, sess->port_name);
4914 qla24xx_post_nack_work(vha, sess, iocb,
4915 SRB_NACK_PRLI);
4916 res = 0;
4917 }
4918 }
4919 break;
4920
4921 case ELS_TPRLO:
4922 if (le16_to_cpu(iocb->u.isp24.flags) &
4923 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4924 loop_id = 0xFFFF;
4925 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4926 res = 1;
4927 break;
4928 }
4929 /* fall through */
4930 case ELS_LOGO:
4931 case ELS_PRLO:
4932 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4933 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4934 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4935
4936 if (sess) {
4937 sess->login_gen++;
4938 sess->fw_login_state = DSC_LS_LOGO_PEND;
4939 sess->logo_ack_needed = 1;
4940 memcpy(sess->iocb, iocb, IOCB_SIZE);
4941 }
4942
4943 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4944
4945 ql_dbg(ql_dbg_disc, vha, 0x20fc,
4946 "%s: logo %llx res %d sess %p ",
4947 __func__, wwn, res, sess);
4948 if (res == 0) {
4949 /*
4950 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4951 * for LOGO_ACK & sess delete
4952 */
4953 BUG_ON(!sess);
4954 res = 0;
4955 } else {
4956 /* cmd did not go to upper layer. */
4957 if (sess) {
4958 qlt_schedule_sess_for_deletion(sess);
4959 res = 0;
4960 }
4961 /* else logo will be ack */
4962 }
4963 break;
4964 case ELS_PDISC:
4965 case ELS_ADISC:
4966 {
4967 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4968 if (tgt->link_reinit_iocb_pending) {
4969 qlt_send_notify_ack(ha->base_qpair,
4970 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
4971 tgt->link_reinit_iocb_pending = 0;
4972 }
4973
4974 sess = qla2x00_find_fcport_by_wwpn(vha,
4975 iocb->u.isp24.port_name, 1);
4976 if (sess) {
4977 ql_dbg(ql_dbg_disc, vha, 0x20fd,
4978 "sess %p lid %d|%d DS %d LS %d\n",
4979 sess, sess->loop_id, loop_id,
4980 sess->disc_state, sess->fw_login_state);
4981 }
4982
4983 res = 1; /* send notify ack */
4984 break;
4985 }
4986
4987 case ELS_FLOGI: /* should never happen */
4988 default:
4989 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4990 "qla_target(%d): Unsupported ELS command %x "
4991 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4992 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4993 break;
4994 }
4995
4996 ql_dbg(ql_dbg_disc, vha, 0xf026,
4997 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
4998 vha->vp_idx, iocb->u.isp24.status_subcode, res);
4999
5000 return res;
5001 }
5002
5003 /*
5004 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5005 */
5006 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5007 struct imm_ntfy_from_isp *iocb)
5008 {
5009 struct qla_hw_data *ha = vha->hw;
5010 uint32_t add_flags = 0;
5011 int send_notify_ack = 1;
5012 uint16_t status;
5013
5014 status = le16_to_cpu(iocb->u.isp2x.status);
5015 switch (status) {
5016 case IMM_NTFY_LIP_RESET:
5017 {
5018 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5019 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5020 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5021 iocb->u.isp24.status_subcode);
5022
5023 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5024 send_notify_ack = 0;
5025 break;
5026 }
5027
5028 case IMM_NTFY_LIP_LINK_REINIT:
5029 {
5030 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5032 "qla_target(%d): LINK REINIT (loop %#x, "
5033 "subcode %x)\n", vha->vp_idx,
5034 le16_to_cpu(iocb->u.isp24.nport_handle),
5035 iocb->u.isp24.status_subcode);
5036 if (tgt->link_reinit_iocb_pending) {
5037 qlt_send_notify_ack(ha->base_qpair,
5038 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5039 }
5040 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5041 tgt->link_reinit_iocb_pending = 1;
5042 /*
5043 * QLogic requires to wait after LINK REINIT for possible
5044 * PDISC or ADISC ELS commands
5045 */
5046 send_notify_ack = 0;
5047 break;
5048 }
5049
5050 case IMM_NTFY_PORT_LOGOUT:
5051 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5052 "qla_target(%d): Port logout (loop "
5053 "%#x, subcode %x)\n", vha->vp_idx,
5054 le16_to_cpu(iocb->u.isp24.nport_handle),
5055 iocb->u.isp24.status_subcode);
5056
5057 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5058 send_notify_ack = 0;
5059 /* The sessions will be cleared in the callback, if needed */
5060 break;
5061
5062 case IMM_NTFY_GLBL_TPRLO:
5063 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5064 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5065 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5066 send_notify_ack = 0;
5067 /* The sessions will be cleared in the callback, if needed */
5068 break;
5069
5070 case IMM_NTFY_PORT_CONFIG:
5071 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5072 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5073 status);
5074 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5075 send_notify_ack = 0;
5076 /* The sessions will be cleared in the callback, if needed */
5077 break;
5078
5079 case IMM_NTFY_GLBL_LOGO:
5080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5081 "qla_target(%d): Link failure detected\n",
5082 vha->vp_idx);
5083 /* I_T nexus loss */
5084 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5085 send_notify_ack = 0;
5086 break;
5087
5088 case IMM_NTFY_IOCB_OVERFLOW:
5089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5090 "qla_target(%d): Cannot provide requested "
5091 "capability (IOCB overflowed the immediate notify "
5092 "resource count)\n", vha->vp_idx);
5093 break;
5094
5095 case IMM_NTFY_ABORT_TASK:
5096 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5097 "qla_target(%d): Abort Task (S %08x I %#x -> "
5098 "L %#x)\n", vha->vp_idx,
5099 le16_to_cpu(iocb->u.isp2x.seq_id),
5100 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5101 le16_to_cpu(iocb->u.isp2x.lun));
5102 if (qlt_abort_task(vha, iocb) == 0)
5103 send_notify_ack = 0;
5104 break;
5105
5106 case IMM_NTFY_RESOURCE:
5107 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5108 "qla_target(%d): Out of resources, host %ld\n",
5109 vha->vp_idx, vha->host_no);
5110 break;
5111
5112 case IMM_NTFY_MSG_RX:
5113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5114 "qla_target(%d): Immediate notify task %x\n",
5115 vha->vp_idx, iocb->u.isp2x.task_flags);
5116 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5117 send_notify_ack = 0;
5118 break;
5119
5120 case IMM_NTFY_ELS:
5121 if (qlt_24xx_handle_els(vha, iocb) == 0)
5122 send_notify_ack = 0;
5123 break;
5124 default:
5125 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5126 "qla_target(%d): Received unknown immediate "
5127 "notify status %x\n", vha->vp_idx, status);
5128 break;
5129 }
5130
5131 if (send_notify_ack)
5132 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5133 0, 0);
5134 }
5135
5136 /*
5137 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5138 * This function sends busy to ISP 2xxx or 24xx.
5139 */
5140 static int __qlt_send_busy(struct qla_qpair *qpair,
5141 struct atio_from_isp *atio, uint16_t status)
5142 {
5143 struct scsi_qla_host *vha = qpair->vha;
5144 struct ctio7_to_24xx *ctio24;
5145 struct qla_hw_data *ha = vha->hw;
5146 request_t *pkt;
5147 struct fc_port *sess = NULL;
5148 unsigned long flags;
5149 u16 temp;
5150
5151 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5152 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5153 atio->u.isp24.fcp_hdr.s_id);
5154 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5155 if (!sess) {
5156 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
5157 return 0;
5158 }
5159 /* Sending marker isn't necessary, since we called from ISR */
5160
5161 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
5162 if (!pkt) {
5163 ql_dbg(ql_dbg_io, vha, 0x3063,
5164 "qla_target(%d): %s failed: unable to allocate "
5165 "request packet", vha->vp_idx, __func__);
5166 return -ENOMEM;
5167 }
5168
5169 qpair->tgt_counters.num_q_full_sent++;
5170 pkt->entry_count = 1;
5171 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5172
5173 ctio24 = (struct ctio7_to_24xx *)pkt;
5174 ctio24->entry_type = CTIO_TYPE7;
5175 ctio24->nport_handle = sess->loop_id;
5176 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5177 ctio24->vp_index = vha->vp_idx;
5178 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5179 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5180 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5181 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5182 temp = (atio->u.isp24.attr << 9) |
5183 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5184 CTIO7_FLAGS_DONT_RET_CTIO;
5185 ctio24->u.status1.flags = cpu_to_le16(temp);
5186 /*
5187 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5188 * if the explicit conformation is used.
5189 */
5190 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5191 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5192 /* Memory Barrier */
5193 wmb();
5194 if (qpair->reqq_start_iocbs)
5195 qpair->reqq_start_iocbs(qpair);
5196 else
5197 qla2x00_start_iocbs(vha, qpair->req);
5198 return 0;
5199 }
5200
5201 /*
5202 * This routine is used to allocate a command for either a QFull condition
5203 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5204 * out previously.
5205 */
5206 static void
5207 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5208 struct atio_from_isp *atio, uint16_t status, int qfull)
5209 {
5210 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5211 struct qla_hw_data *ha = vha->hw;
5212 struct fc_port *sess;
5213 struct se_session *se_sess;
5214 struct qla_tgt_cmd *cmd;
5215 int tag;
5216 unsigned long flags;
5217
5218 if (unlikely(tgt->tgt_stop)) {
5219 ql_dbg(ql_dbg_io, vha, 0x300a,
5220 "New command while device %p is shutting down\n", tgt);
5221 return;
5222 }
5223
5224 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5225 vha->hw->tgt.num_qfull_cmds_dropped++;
5226 if (vha->hw->tgt.num_qfull_cmds_dropped >
5227 vha->qla_stats.stat_max_qfull_cmds_dropped)
5228 vha->qla_stats.stat_max_qfull_cmds_dropped =
5229 vha->hw->tgt.num_qfull_cmds_dropped;
5230
5231 ql_dbg(ql_dbg_io, vha, 0x3068,
5232 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5233 vha->vp_idx, __func__,
5234 vha->hw->tgt.num_qfull_cmds_dropped);
5235
5236 qlt_chk_exch_leak_thresh_hold(vha);
5237 return;
5238 }
5239
5240 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5241 (vha, atio->u.isp24.fcp_hdr.s_id);
5242 if (!sess)
5243 return;
5244
5245 se_sess = sess->se_sess;
5246
5247 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5248 if (tag < 0)
5249 return;
5250
5251 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5252 if (!cmd) {
5253 ql_dbg(ql_dbg_io, vha, 0x3009,
5254 "qla_target(%d): %s: Allocation of cmd failed\n",
5255 vha->vp_idx, __func__);
5256
5257 vha->hw->tgt.num_qfull_cmds_dropped++;
5258 if (vha->hw->tgt.num_qfull_cmds_dropped >
5259 vha->qla_stats.stat_max_qfull_cmds_dropped)
5260 vha->qla_stats.stat_max_qfull_cmds_dropped =
5261 vha->hw->tgt.num_qfull_cmds_dropped;
5262
5263 qlt_chk_exch_leak_thresh_hold(vha);
5264 return;
5265 }
5266
5267 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5268
5269 qlt_incr_num_pend_cmds(vha);
5270 INIT_LIST_HEAD(&cmd->cmd_list);
5271 memcpy(&cmd->atio, atio, sizeof(*atio));
5272
5273 cmd->tgt = vha->vha_tgt.qla_tgt;
5274 cmd->vha = vha;
5275 cmd->reset_count = ha->base_qpair->chip_reset;
5276 cmd->q_full = 1;
5277 cmd->qpair = ha->base_qpair;
5278
5279 if (qfull) {
5280 cmd->q_full = 1;
5281 /* NOTE: borrowing the state field to carry the status */
5282 cmd->state = status;
5283 } else
5284 cmd->term_exchg = 1;
5285
5286 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5287 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5288
5289 vha->hw->tgt.num_qfull_cmds_alloc++;
5290 if (vha->hw->tgt.num_qfull_cmds_alloc >
5291 vha->qla_stats.stat_max_qfull_cmds_alloc)
5292 vha->qla_stats.stat_max_qfull_cmds_alloc =
5293 vha->hw->tgt.num_qfull_cmds_alloc;
5294 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5295 }
5296
5297 int
5298 qlt_free_qfull_cmds(struct qla_qpair *qpair)
5299 {
5300 struct scsi_qla_host *vha = qpair->vha;
5301 struct qla_hw_data *ha = vha->hw;
5302 unsigned long flags;
5303 struct qla_tgt_cmd *cmd, *tcmd;
5304 struct list_head free_list, q_full_list;
5305 int rc = 0;
5306
5307 if (list_empty(&ha->tgt.q_full_list))
5308 return 0;
5309
5310 INIT_LIST_HEAD(&free_list);
5311 INIT_LIST_HEAD(&q_full_list);
5312
5313 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5314 if (list_empty(&ha->tgt.q_full_list)) {
5315 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5316 return 0;
5317 }
5318
5319 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5320 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5321
5322 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5323 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
5324 if (cmd->q_full)
5325 /* cmd->state is a borrowed field to hold status */
5326 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
5327 else if (cmd->term_exchg)
5328 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
5329
5330 if (rc == -ENOMEM)
5331 break;
5332
5333 if (cmd->q_full)
5334 ql_dbg(ql_dbg_io, vha, 0x3006,
5335 "%s: busy sent for ox_id[%04x]\n", __func__,
5336 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5337 else if (cmd->term_exchg)
5338 ql_dbg(ql_dbg_io, vha, 0x3007,
5339 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5340 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5341 else
5342 ql_dbg(ql_dbg_io, vha, 0x3008,
5343 "%s: Unexpected cmd in QFull list %p\n", __func__,
5344 cmd);
5345
5346 list_del(&cmd->cmd_list);
5347 list_add_tail(&cmd->cmd_list, &free_list);
5348
5349 /* piggy back on hardware_lock for protection */
5350 vha->hw->tgt.num_qfull_cmds_alloc--;
5351 }
5352 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
5353
5354 cmd = NULL;
5355
5356 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5357 list_del(&cmd->cmd_list);
5358 /* This cmd was never sent to TCM. There is no need
5359 * to schedule free or call free_cmd
5360 */
5361 qlt_free_cmd(cmd);
5362 }
5363
5364 if (!list_empty(&q_full_list)) {
5365 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5366 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5367 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5368 }
5369
5370 return rc;
5371 }
5372
5373 static void
5374 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5375 uint16_t status)
5376 {
5377 int rc = 0;
5378 struct scsi_qla_host *vha = qpair->vha;
5379
5380 rc = __qlt_send_busy(qpair, atio, status);
5381 if (rc == -ENOMEM)
5382 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5383 }
5384
5385 static int
5386 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5387 struct atio_from_isp *atio, uint8_t ha_locked)
5388 {
5389 struct qla_hw_data *ha = vha->hw;
5390 unsigned long flags;
5391
5392 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5393 return 0;
5394
5395 if (!ha_locked)
5396 spin_lock_irqsave(&ha->hardware_lock, flags);
5397 qlt_send_busy(qpair, atio, qla_sam_status);
5398 if (!ha_locked)
5399 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5400
5401 return 1;
5402 }
5403
5404 /* ha->hardware_lock supposed to be held on entry */
5405 /* called via callback from qla2xxx */
5406 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5407 struct atio_from_isp *atio, uint8_t ha_locked)
5408 {
5409 struct qla_hw_data *ha = vha->hw;
5410 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5411 int rc;
5412 unsigned long flags = 0;
5413
5414 if (unlikely(tgt == NULL)) {
5415 ql_dbg(ql_dbg_tgt, vha, 0x3064,
5416 "ATIO pkt, but no tgt (ha %p)", ha);
5417 return;
5418 }
5419 /*
5420 * In tgt_stop mode we also should allow all requests to pass.
5421 * Otherwise, some commands can stuck.
5422 */
5423
5424 tgt->atio_irq_cmd_count++;
5425
5426 switch (atio->u.raw.entry_type) {
5427 case ATIO_TYPE7:
5428 if (unlikely(atio->u.isp24.exchange_addr ==
5429 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
5430 ql_dbg(ql_dbg_io, vha, 0x3065,
5431 "qla_target(%d): ATIO_TYPE7 "
5432 "received with UNKNOWN exchange address, "
5433 "sending QUEUE_FULL\n", vha->vp_idx);
5434 if (!ha_locked)
5435 spin_lock_irqsave(&ha->hardware_lock, flags);
5436 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
5437 if (!ha_locked)
5438 spin_unlock_irqrestore(&ha->hardware_lock,
5439 flags);
5440 break;
5441 }
5442
5443 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5444 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5445 atio, ha_locked);
5446 if (rc != 0) {
5447 tgt->atio_irq_cmd_count--;
5448 return;
5449 }
5450 rc = qlt_handle_cmd_for_atio(vha, atio);
5451 } else {
5452 rc = qlt_handle_task_mgmt(vha, atio);
5453 }
5454 if (unlikely(rc != 0)) {
5455 if (!ha_locked)
5456 spin_lock_irqsave(&ha->hardware_lock, flags);
5457 switch (rc) {
5458 case -ENODEV:
5459 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5460 "qla_target: Unable to send command to target\n");
5461 break;
5462 case -EBADF:
5463 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5464 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5465 qlt_send_term_exchange(ha->base_qpair, NULL,
5466 atio, 1, 0);
5467 break;
5468 case -EBUSY:
5469 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5470 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5471 vha->vp_idx);
5472 qlt_send_busy(ha->base_qpair, atio,
5473 tc_sam_status);
5474 break;
5475 default:
5476 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5477 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5478 vha->vp_idx);
5479 qlt_send_busy(ha->base_qpair, atio,
5480 qla_sam_status);
5481 break;
5482 }
5483 if (!ha_locked)
5484 spin_unlock_irqrestore(&ha->hardware_lock,
5485 flags);
5486 }
5487 break;
5488
5489 case IMMED_NOTIFY_TYPE:
5490 {
5491 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5492 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5493 "qla_target(%d): Received ATIO packet %x "
5494 "with error status %x\n", vha->vp_idx,
5495 atio->u.raw.entry_type,
5496 atio->u.isp2x.entry_status);
5497 break;
5498 }
5499 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5500
5501 if (!ha_locked)
5502 spin_lock_irqsave(&ha->hardware_lock, flags);
5503 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5504 if (!ha_locked)
5505 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5506 break;
5507 }
5508
5509 default:
5510 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5511 "qla_target(%d): Received unknown ATIO atio "
5512 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5513 break;
5514 }
5515
5516 tgt->atio_irq_cmd_count--;
5517 }
5518
5519 /* ha->hardware_lock supposed to be held on entry */
5520 /* called via callback from qla2xxx */
5521 static void qlt_response_pkt(struct scsi_qla_host *vha,
5522 struct rsp_que *rsp, response_t *pkt)
5523 {
5524 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5525
5526 if (unlikely(tgt == NULL)) {
5527 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5528 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5529 vha->vp_idx, pkt->entry_type, vha->hw);
5530 return;
5531 }
5532
5533 /*
5534 * In tgt_stop mode we also should allow all requests to pass.
5535 * Otherwise, some commands can stuck.
5536 */
5537
5538 switch (pkt->entry_type) {
5539 case CTIO_CRC2:
5540 case CTIO_TYPE7:
5541 {
5542 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5543 qlt_do_ctio_completion(vha, rsp, entry->handle,
5544 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5545 entry);
5546 break;
5547 }
5548
5549 case ACCEPT_TGT_IO_TYPE:
5550 {
5551 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5552 int rc;
5553 if (atio->u.isp2x.status !=
5554 cpu_to_le16(ATIO_CDB_VALID)) {
5555 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5556 "qla_target(%d): ATIO with error "
5557 "status %x received\n", vha->vp_idx,
5558 le16_to_cpu(atio->u.isp2x.status));
5559 break;
5560 }
5561
5562 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
5563 if (rc != 0)
5564 return;
5565
5566 rc = qlt_handle_cmd_for_atio(vha, atio);
5567 if (unlikely(rc != 0)) {
5568 switch (rc) {
5569 case -ENODEV:
5570 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5571 "qla_target: Unable to send command to target\n");
5572 break;
5573 case -EBADF:
5574 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5575 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5576 qlt_send_term_exchange(rsp->qpair, NULL,
5577 atio, 1, 0);
5578 break;
5579 case -EBUSY:
5580 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5581 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5582 vha->vp_idx);
5583 qlt_send_busy(rsp->qpair, atio,
5584 tc_sam_status);
5585 break;
5586 default:
5587 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5588 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5589 vha->vp_idx);
5590 qlt_send_busy(rsp->qpair, atio,
5591 qla_sam_status);
5592 break;
5593 }
5594 }
5595 }
5596 break;
5597
5598 case CONTINUE_TGT_IO_TYPE:
5599 {
5600 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5601 qlt_do_ctio_completion(vha, rsp, entry->handle,
5602 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5603 entry);
5604 break;
5605 }
5606
5607 case CTIO_A64_TYPE:
5608 {
5609 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5610 qlt_do_ctio_completion(vha, rsp, entry->handle,
5611 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5612 entry);
5613 break;
5614 }
5615
5616 case IMMED_NOTIFY_TYPE:
5617 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5618 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5619 break;
5620
5621 case NOTIFY_ACK_TYPE:
5622 if (tgt->notify_ack_expected > 0) {
5623 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5624 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5625 "NOTIFY_ACK seq %08x status %x\n",
5626 le16_to_cpu(entry->u.isp2x.seq_id),
5627 le16_to_cpu(entry->u.isp2x.status));
5628 tgt->notify_ack_expected--;
5629 if (entry->u.isp2x.status !=
5630 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5631 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5632 "qla_target(%d): NOTIFY_ACK "
5633 "failed %x\n", vha->vp_idx,
5634 le16_to_cpu(entry->u.isp2x.status));
5635 }
5636 } else {
5637 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5638 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5639 vha->vp_idx);
5640 }
5641 break;
5642
5643 case ABTS_RECV_24XX:
5644 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5645 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5646 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5647 break;
5648
5649 case ABTS_RESP_24XX:
5650 if (tgt->abts_resp_expected > 0) {
5651 struct abts_resp_from_24xx_fw *entry =
5652 (struct abts_resp_from_24xx_fw *)pkt;
5653 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5654 "ABTS_RESP_24XX: compl_status %x\n",
5655 entry->compl_status);
5656 tgt->abts_resp_expected--;
5657 if (le16_to_cpu(entry->compl_status) !=
5658 ABTS_RESP_COMPL_SUCCESS) {
5659 if ((entry->error_subcode1 == 0x1E) &&
5660 (entry->error_subcode2 == 0)) {
5661 /*
5662 * We've got a race here: aborted
5663 * exchange not terminated, i.e.
5664 * response for the aborted command was
5665 * sent between the abort request was
5666 * received and processed.
5667 * Unfortunately, the firmware has a
5668 * silly requirement that all aborted
5669 * exchanges must be explicitely
5670 * terminated, otherwise it refuses to
5671 * send responses for the abort
5672 * requests. So, we have to
5673 * (re)terminate the exchange and retry
5674 * the abort response.
5675 */
5676 qlt_24xx_retry_term_exchange(vha,
5677 entry);
5678 } else
5679 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5680 "qla_target(%d): ABTS_RESP_24XX "
5681 "failed %x (subcode %x:%x)",
5682 vha->vp_idx, entry->compl_status,
5683 entry->error_subcode1,
5684 entry->error_subcode2);
5685 }
5686 } else {
5687 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5688 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5689 "received\n", vha->vp_idx);
5690 }
5691 break;
5692
5693 default:
5694 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5695 "qla_target(%d): Received unknown response pkt "
5696 "type %x\n", vha->vp_idx, pkt->entry_type);
5697 break;
5698 }
5699
5700 }
5701
5702 /*
5703 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5704 */
5705 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5706 uint16_t *mailbox)
5707 {
5708 struct qla_hw_data *ha = vha->hw;
5709 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5710 int login_code;
5711
5712 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
5713 return;
5714
5715 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5716 IS_QLA2100(ha))
5717 return;
5718 /*
5719 * In tgt_stop mode we also should allow all requests to pass.
5720 * Otherwise, some commands can stuck.
5721 */
5722
5723
5724 switch (code) {
5725 case MBA_RESET: /* Reset */
5726 case MBA_SYSTEM_ERR: /* System Error */
5727 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5728 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5729 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5730 "qla_target(%d): System error async event %#x "
5731 "occurred", vha->vp_idx, code);
5732 break;
5733 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5734 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5735 break;
5736
5737 case MBA_LOOP_UP:
5738 {
5739 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
5740 "qla_target(%d): Async LOOP_UP occurred "
5741 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5742 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5743 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5744 if (tgt->link_reinit_iocb_pending) {
5745 qlt_send_notify_ack(ha->base_qpair,
5746 (void *)&tgt->link_reinit_iocb,
5747 0, 0, 0, 0, 0, 0);
5748 tgt->link_reinit_iocb_pending = 0;
5749 }
5750 break;
5751 }
5752
5753 case MBA_LIP_OCCURRED:
5754 case MBA_LOOP_DOWN:
5755 case MBA_LIP_RESET:
5756 case MBA_RSCN_UPDATE:
5757 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
5758 "qla_target(%d): Async event %#x occurred "
5759 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5760 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5761 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5762 break;
5763
5764 case MBA_REJECTED_FCP_CMD:
5765 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5766 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5767 vha->vp_idx,
5768 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5769 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5770
5771 if (le16_to_cpu(mailbox[3]) == 1) {
5772 /* exchange starvation. */
5773 vha->hw->exch_starvation++;
5774 if (vha->hw->exch_starvation > 5) {
5775 ql_log(ql_log_warn, vha, 0xd03a,
5776 "Exchange starvation-. Resetting RISC\n");
5777
5778 vha->hw->exch_starvation = 0;
5779 if (IS_P3P_TYPE(vha->hw))
5780 set_bit(FCOE_CTX_RESET_NEEDED,
5781 &vha->dpc_flags);
5782 else
5783 set_bit(ISP_ABORT_NEEDED,
5784 &vha->dpc_flags);
5785 qla2xxx_wake_dpc(vha);
5786 }
5787 }
5788 break;
5789
5790 case MBA_PORT_UPDATE:
5791 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5792 "qla_target(%d): Port update async event %#x "
5793 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
5794 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5795 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5796 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5797
5798 login_code = le16_to_cpu(mailbox[2]);
5799 if (login_code == 0x4) {
5800 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5801 "Async MB 2: Got PLOGI Complete\n");
5802 vha->hw->exch_starvation = 0;
5803 } else if (login_code == 0x7)
5804 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5805 "Async MB 2: Port Logged Out\n");
5806 break;
5807 default:
5808 break;
5809 }
5810
5811 }
5812
5813 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5814 uint16_t loop_id)
5815 {
5816 fc_port_t *fcport, *tfcp, *del;
5817 int rc;
5818 unsigned long flags;
5819 u8 newfcport = 0;
5820
5821 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
5822 if (!fcport) {
5823 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5824 "qla_target(%d): Allocation of tmp FC port failed",
5825 vha->vp_idx);
5826 return NULL;
5827 }
5828
5829 fcport->loop_id = loop_id;
5830
5831 rc = qla24xx_gpdb_wait(vha, fcport, 0);
5832 if (rc != QLA_SUCCESS) {
5833 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5834 "qla_target(%d): Failed to retrieve fcport "
5835 "information -- get_port_database() returned %x "
5836 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5837 kfree(fcport);
5838 return NULL;
5839 }
5840
5841 del = NULL;
5842 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5843 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5844
5845 if (tfcp) {
5846 tfcp->d_id = fcport->d_id;
5847 tfcp->port_type = fcport->port_type;
5848 tfcp->supported_classes = fcport->supported_classes;
5849 tfcp->flags |= fcport->flags;
5850 tfcp->scan_state = QLA_FCPORT_FOUND;
5851
5852 del = fcport;
5853 fcport = tfcp;
5854 } else {
5855 if (vha->hw->current_topology == ISP_CFG_F)
5856 fcport->flags |= FCF_FABRIC_DEVICE;
5857
5858 list_add_tail(&fcport->list, &vha->vp_fcports);
5859 if (!IS_SW_RESV_ADDR(fcport->d_id))
5860 vha->fcport_count++;
5861 fcport->login_gen++;
5862 fcport->disc_state = DSC_LOGIN_COMPLETE;
5863 fcport->login_succ = 1;
5864 newfcport = 1;
5865 }
5866
5867 fcport->deleted = 0;
5868 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5869
5870 switch (vha->host->active_mode) {
5871 case MODE_INITIATOR:
5872 case MODE_DUAL:
5873 if (newfcport) {
5874 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
5875 ql_dbg(ql_dbg_disc, vha, 0x20fe,
5876 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5877 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5878 qla24xx_post_upd_fcport_work(vha, fcport);
5879 } else {
5880 ql_dbg(ql_dbg_disc, vha, 0x20ff,
5881 "%s %d %8phC post gpsc fcp_cnt %d\n",
5882 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5883 qla24xx_post_gpsc_work(vha, fcport);
5884 }
5885 }
5886 break;
5887
5888 case MODE_TARGET:
5889 default:
5890 break;
5891 }
5892 if (del)
5893 qla2x00_free_fcport(del);
5894
5895 return fcport;
5896 }
5897
5898 /* Must be called under tgt_mutex */
5899 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
5900 uint8_t *s_id)
5901 {
5902 struct fc_port *sess = NULL;
5903 fc_port_t *fcport = NULL;
5904 int rc, global_resets;
5905 uint16_t loop_id = 0;
5906
5907 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5908 /*
5909 * This is Domain Controller, so it should be
5910 * OK to drop SCSI commands from it.
5911 */
5912 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5913 "Unable to find initiator with S_ID %x:%x:%x",
5914 s_id[0], s_id[1], s_id[2]);
5915 return NULL;
5916 }
5917
5918 mutex_lock(&vha->vha_tgt.tgt_mutex);
5919
5920 retry:
5921 global_resets =
5922 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
5923
5924 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5925 if (rc != 0) {
5926 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5927
5928 ql_log(ql_log_info, vha, 0xf071,
5929 "qla_target(%d): Unable to find "
5930 "initiator with S_ID %x:%x:%x",
5931 vha->vp_idx, s_id[0], s_id[1],
5932 s_id[2]);
5933
5934 if (rc == -ENOENT) {
5935 qlt_port_logo_t logo;
5936 sid_to_portid(s_id, &logo.id);
5937 logo.cmd_count = 1;
5938 qlt_send_first_logo(vha, &logo);
5939 }
5940
5941 return NULL;
5942 }
5943
5944 fcport = qlt_get_port_database(vha, loop_id);
5945 if (!fcport) {
5946 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5947 return NULL;
5948 }
5949
5950 if (global_resets !=
5951 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
5952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5953 "qla_target(%d): global reset during session discovery "
5954 "(counter was %d, new %d), retrying", vha->vp_idx,
5955 global_resets,
5956 atomic_read(&vha->vha_tgt.
5957 qla_tgt->tgt_global_resets_count));
5958 goto retry;
5959 }
5960
5961 sess = qlt_create_sess(vha, fcport, true);
5962
5963 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5964
5965 return sess;
5966 }
5967
5968 static void qlt_abort_work(struct qla_tgt *tgt,
5969 struct qla_tgt_sess_work_param *prm)
5970 {
5971 struct scsi_qla_host *vha = tgt->vha;
5972 struct qla_hw_data *ha = vha->hw;
5973 struct fc_port *sess = NULL;
5974 unsigned long flags = 0, flags2 = 0;
5975 uint32_t be_s_id;
5976 uint8_t s_id[3];
5977 int rc;
5978
5979 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5980
5981 if (tgt->tgt_stop)
5982 goto out_term2;
5983
5984 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5985 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5986 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5987
5988 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5989 (unsigned char *)&be_s_id);
5990 if (!sess) {
5991 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5992
5993 sess = qlt_make_local_sess(vha, s_id);
5994 /* sess has got an extra creation ref */
5995
5996 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5997 if (!sess)
5998 goto out_term2;
5999 } else {
6000 if (sess->deleted) {
6001 sess = NULL;
6002 goto out_term2;
6003 }
6004
6005 if (!kref_get_unless_zero(&sess->sess_kref)) {
6006 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
6007 "%s: kref_get fail %8phC \n",
6008 __func__, sess->port_name);
6009 sess = NULL;
6010 goto out_term2;
6011 }
6012 }
6013
6014 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
6015 ha->tgt.tgt_ops->put_sess(sess);
6016 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6017
6018 if (rc != 0)
6019 goto out_term;
6020 return;
6021
6022 out_term2:
6023 if (sess)
6024 ha->tgt.tgt_ops->put_sess(sess);
6025 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6026
6027 out_term:
6028 spin_lock_irqsave(&ha->hardware_lock, flags);
6029 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6030 FCP_TMF_REJECTED, false);
6031 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6032 }
6033
6034 static void qlt_tmr_work(struct qla_tgt *tgt,
6035 struct qla_tgt_sess_work_param *prm)
6036 {
6037 struct atio_from_isp *a = &prm->tm_iocb2;
6038 struct scsi_qla_host *vha = tgt->vha;
6039 struct qla_hw_data *ha = vha->hw;
6040 struct fc_port *sess = NULL;
6041 unsigned long flags;
6042 uint8_t *s_id = NULL; /* to hide compiler warnings */
6043 int rc;
6044 u64 unpacked_lun;
6045 int fn;
6046 void *iocb;
6047
6048 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6049
6050 if (tgt->tgt_stop)
6051 goto out_term2;
6052
6053 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6054 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6055 if (!sess) {
6056 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6057
6058 sess = qlt_make_local_sess(vha, s_id);
6059 /* sess has got an extra creation ref */
6060
6061 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6062 if (!sess)
6063 goto out_term2;
6064 } else {
6065 if (sess->deleted) {
6066 sess = NULL;
6067 goto out_term2;
6068 }
6069
6070 if (!kref_get_unless_zero(&sess->sess_kref)) {
6071 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
6072 "%s: kref_get fail %8phC\n",
6073 __func__, sess->port_name);
6074 sess = NULL;
6075 goto out_term2;
6076 }
6077 }
6078
6079 iocb = a;
6080 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
6081 unpacked_lun =
6082 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
6083
6084 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
6085 ha->tgt.tgt_ops->put_sess(sess);
6086 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6087
6088 if (rc != 0)
6089 goto out_term;
6090 return;
6091
6092 out_term2:
6093 if (sess)
6094 ha->tgt.tgt_ops->put_sess(sess);
6095 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6096 out_term:
6097 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
6098 }
6099
6100 static void qlt_sess_work_fn(struct work_struct *work)
6101 {
6102 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6103 struct scsi_qla_host *vha = tgt->vha;
6104 unsigned long flags;
6105
6106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6107
6108 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6109 while (!list_empty(&tgt->sess_works_list)) {
6110 struct qla_tgt_sess_work_param *prm = list_entry(
6111 tgt->sess_works_list.next, typeof(*prm),
6112 sess_works_list_entry);
6113
6114 /*
6115 * This work can be scheduled on several CPUs at time, so we
6116 * must delete the entry to eliminate double processing
6117 */
6118 list_del(&prm->sess_works_list_entry);
6119
6120 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6121
6122 switch (prm->type) {
6123 case QLA_TGT_SESS_WORK_ABORT:
6124 qlt_abort_work(tgt, prm);
6125 break;
6126 case QLA_TGT_SESS_WORK_TM:
6127 qlt_tmr_work(tgt, prm);
6128 break;
6129 default:
6130 BUG_ON(1);
6131 break;
6132 }
6133
6134 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6135
6136 kfree(prm);
6137 }
6138 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6139 }
6140
6141 /* Must be called under tgt_host_action_mutex */
6142 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6143 {
6144 struct qla_tgt *tgt;
6145 int rc, i;
6146 struct qla_qpair_hint *h;
6147
6148 if (!QLA_TGT_MODE_ENABLED())
6149 return 0;
6150
6151 if (!IS_TGT_MODE_CAPABLE(ha)) {
6152 ql_log(ql_log_warn, base_vha, 0xe070,
6153 "This adapter does not support target mode.\n");
6154 return 0;
6155 }
6156
6157 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
6158 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
6159
6160 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
6161
6162 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6163 if (!tgt) {
6164 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6165 "Unable to allocate struct qla_tgt\n");
6166 return -ENOMEM;
6167 }
6168
6169 tgt->qphints = kzalloc((ha->max_qpairs + 1) *
6170 sizeof(struct qla_qpair_hint), GFP_KERNEL);
6171 if (!tgt->qphints) {
6172 kfree(tgt);
6173 ql_log(ql_log_warn, base_vha, 0x0197,
6174 "Unable to allocate qpair hints.\n");
6175 return -ENOMEM;
6176 }
6177
6178 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6179 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6180
6181 rc = btree_init64(&tgt->lun_qpair_map);
6182 if (rc) {
6183 kfree(tgt->qphints);
6184 kfree(tgt);
6185 ql_log(ql_log_info, base_vha, 0x0198,
6186 "Unable to initialize lun_qpair_map btree\n");
6187 return -EIO;
6188 }
6189 h = &tgt->qphints[0];
6190 h->qpair = ha->base_qpair;
6191 INIT_LIST_HEAD(&h->hint_elem);
6192 h->cpuid = ha->base_qpair->cpuid;
6193 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6194
6195 for (i = 0; i < ha->max_qpairs; i++) {
6196 unsigned long flags;
6197
6198 struct qla_qpair *qpair = ha->queue_pair_map[i];
6199 h = &tgt->qphints[i + 1];
6200 INIT_LIST_HEAD(&h->hint_elem);
6201 if (qpair) {
6202 h->qpair = qpair;
6203 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6204 list_add_tail(&h->hint_elem, &qpair->hints_list);
6205 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6206 h->cpuid = qpair->cpuid;
6207 }
6208 }
6209
6210 tgt->ha = ha;
6211 tgt->vha = base_vha;
6212 init_waitqueue_head(&tgt->waitQ);
6213 INIT_LIST_HEAD(&tgt->del_sess_list);
6214 spin_lock_init(&tgt->sess_work_lock);
6215 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6216 INIT_LIST_HEAD(&tgt->sess_works_list);
6217 atomic_set(&tgt->tgt_global_resets_count, 0);
6218
6219 base_vha->vha_tgt.qla_tgt = tgt;
6220
6221 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6222 "qla_target(%d): using 64 Bit PCI addressing",
6223 base_vha->vp_idx);
6224 /* 3 is reserved */
6225 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6226
6227 mutex_lock(&qla_tgt_mutex);
6228 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6229 mutex_unlock(&qla_tgt_mutex);
6230
6231 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6232 ha->tgt.tgt_ops->add_target(base_vha);
6233
6234 return 0;
6235 }
6236
6237 /* Must be called under tgt_host_action_mutex */
6238 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6239 {
6240 if (!vha->vha_tgt.qla_tgt)
6241 return 0;
6242
6243 if (vha->fc_vport) {
6244 qlt_release(vha->vha_tgt.qla_tgt);
6245 return 0;
6246 }
6247
6248 /* free left over qfull cmds */
6249 qlt_init_term_exchange(vha);
6250
6251 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6252 vha->host_no, ha);
6253 qlt_release(vha->vha_tgt.qla_tgt);
6254
6255 return 0;
6256 }
6257
6258 void qlt_remove_target_resources(struct qla_hw_data *ha)
6259 {
6260 struct scsi_qla_host *node;
6261 u32 key = 0;
6262
6263 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6264 btree_remove32(&ha->tgt.host_map, key);
6265
6266 btree_destroy32(&ha->tgt.host_map);
6267 }
6268
6269 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6270 unsigned char *b)
6271 {
6272 int i;
6273
6274 pr_debug("qla2xxx HW vha->node_name: ");
6275 for (i = 0; i < WWN_SIZE; i++)
6276 pr_debug("%02x ", vha->node_name[i]);
6277 pr_debug("\n");
6278 pr_debug("qla2xxx HW vha->port_name: ");
6279 for (i = 0; i < WWN_SIZE; i++)
6280 pr_debug("%02x ", vha->port_name[i]);
6281 pr_debug("\n");
6282
6283 pr_debug("qla2xxx passed configfs WWPN: ");
6284 put_unaligned_be64(wwpn, b);
6285 for (i = 0; i < WWN_SIZE; i++)
6286 pr_debug("%02x ", b[i]);
6287 pr_debug("\n");
6288 }
6289
6290 /**
6291 * qla_tgt_lport_register - register lport with external module
6292 *
6293 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6294 * @phys_wwpn:
6295 * @npiv_wwpn:
6296 * @npiv_wwnn:
6297 * @callback: lport initialization callback for tcm_qla2xxx code
6298 */
6299 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6300 u64 npiv_wwpn, u64 npiv_wwnn,
6301 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6302 {
6303 struct qla_tgt *tgt;
6304 struct scsi_qla_host *vha;
6305 struct qla_hw_data *ha;
6306 struct Scsi_Host *host;
6307 unsigned long flags;
6308 int rc;
6309 u8 b[WWN_SIZE];
6310
6311 mutex_lock(&qla_tgt_mutex);
6312 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6313 vha = tgt->vha;
6314 ha = vha->hw;
6315
6316 host = vha->host;
6317 if (!host)
6318 continue;
6319
6320 if (!(host->hostt->supported_mode & MODE_TARGET))
6321 continue;
6322
6323 spin_lock_irqsave(&ha->hardware_lock, flags);
6324 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6325 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6326 host->host_no);
6327 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6328 continue;
6329 }
6330 if (tgt->tgt_stop) {
6331 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6332 host->host_no);
6333 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6334 continue;
6335 }
6336 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6337
6338 if (!scsi_host_get(host)) {
6339 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6340 "Unable to scsi_host_get() for"
6341 " qla2xxx scsi_host\n");
6342 continue;
6343 }
6344 qlt_lport_dump(vha, phys_wwpn, b);
6345
6346 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6347 scsi_host_put(host);
6348 continue;
6349 }
6350 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6351 if (rc != 0)
6352 scsi_host_put(host);
6353
6354 mutex_unlock(&qla_tgt_mutex);
6355 return rc;
6356 }
6357 mutex_unlock(&qla_tgt_mutex);
6358
6359 return -ENODEV;
6360 }
6361 EXPORT_SYMBOL(qlt_lport_register);
6362
6363 /**
6364 * qla_tgt_lport_deregister - Degister lport
6365 *
6366 * @vha: Registered scsi_qla_host pointer
6367 */
6368 void qlt_lport_deregister(struct scsi_qla_host *vha)
6369 {
6370 struct qla_hw_data *ha = vha->hw;
6371 struct Scsi_Host *sh = vha->host;
6372 /*
6373 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6374 */
6375 vha->vha_tgt.target_lport_ptr = NULL;
6376 ha->tgt.tgt_ops = NULL;
6377 /*
6378 * Release the Scsi_Host reference for the underlying qla2xxx host
6379 */
6380 scsi_host_put(sh);
6381 }
6382 EXPORT_SYMBOL(qlt_lport_deregister);
6383
6384 /* Must be called under HW lock */
6385 static void qlt_set_mode(struct scsi_qla_host *vha)
6386 {
6387 switch (ql2x_ini_mode) {
6388 case QLA2XXX_INI_MODE_DISABLED:
6389 case QLA2XXX_INI_MODE_EXCLUSIVE:
6390 vha->host->active_mode = MODE_TARGET;
6391 break;
6392 case QLA2XXX_INI_MODE_ENABLED:
6393 vha->host->active_mode = MODE_UNKNOWN;
6394 break;
6395 case QLA2XXX_INI_MODE_DUAL:
6396 vha->host->active_mode = MODE_DUAL;
6397 break;
6398 default:
6399 break;
6400 }
6401 }
6402
6403 /* Must be called under HW lock */
6404 static void qlt_clear_mode(struct scsi_qla_host *vha)
6405 {
6406 switch (ql2x_ini_mode) {
6407 case QLA2XXX_INI_MODE_DISABLED:
6408 vha->host->active_mode = MODE_UNKNOWN;
6409 break;
6410 case QLA2XXX_INI_MODE_EXCLUSIVE:
6411 vha->host->active_mode = MODE_INITIATOR;
6412 break;
6413 case QLA2XXX_INI_MODE_ENABLED:
6414 case QLA2XXX_INI_MODE_DUAL:
6415 vha->host->active_mode = MODE_INITIATOR;
6416 break;
6417 default:
6418 break;
6419 }
6420 }
6421
6422 /*
6423 * qla_tgt_enable_vha - NO LOCK HELD
6424 *
6425 * host_reset, bring up w/ Target Mode Enabled
6426 */
6427 void
6428 qlt_enable_vha(struct scsi_qla_host *vha)
6429 {
6430 struct qla_hw_data *ha = vha->hw;
6431 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6432 unsigned long flags;
6433 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6434
6435 if (!tgt) {
6436 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6437 "Unable to locate qla_tgt pointer from"
6438 " struct qla_hw_data\n");
6439 dump_stack();
6440 return;
6441 }
6442
6443 spin_lock_irqsave(&ha->hardware_lock, flags);
6444 tgt->tgt_stopped = 0;
6445 qlt_set_mode(vha);
6446 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6447
6448 if (vha->vp_idx) {
6449 qla24xx_disable_vp(vha);
6450 qla24xx_enable_vp(vha);
6451 } else {
6452 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6453 qla2xxx_wake_dpc(base_vha);
6454 qla2x00_wait_for_hba_online(base_vha);
6455 }
6456 }
6457 EXPORT_SYMBOL(qlt_enable_vha);
6458
6459 /*
6460 * qla_tgt_disable_vha - NO LOCK HELD
6461 *
6462 * Disable Target Mode and reset the adapter
6463 */
6464 static void qlt_disable_vha(struct scsi_qla_host *vha)
6465 {
6466 struct qla_hw_data *ha = vha->hw;
6467 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6468 unsigned long flags;
6469
6470 if (!tgt) {
6471 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6472 "Unable to locate qla_tgt pointer from"
6473 " struct qla_hw_data\n");
6474 dump_stack();
6475 return;
6476 }
6477
6478 spin_lock_irqsave(&ha->hardware_lock, flags);
6479 qlt_clear_mode(vha);
6480 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6481
6482 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6483 qla2xxx_wake_dpc(vha);
6484 qla2x00_wait_for_hba_online(vha);
6485 }
6486
6487 /*
6488 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6489 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6490 * members.
6491 */
6492 void
6493 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6494 {
6495 vha->vha_tgt.qla_tgt = NULL;
6496
6497 mutex_init(&vha->vha_tgt.tgt_mutex);
6498 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6499
6500 qlt_clear_mode(vha);
6501
6502 /*
6503 * NOTE: Currently the value is kept the same for <24xx and
6504 * >=24xx ISPs. If it is necessary to change it,
6505 * the check should be added for specific ISPs,
6506 * assigning the value appropriately.
6507 */
6508 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6509
6510 qlt_add_target(ha, vha);
6511 }
6512
6513 u8
6514 qlt_rff_id(struct scsi_qla_host *vha)
6515 {
6516 u8 fc4_feature = 0;
6517 /*
6518 * FC-4 Feature bit 0 indicates target functionality to the name server.
6519 */
6520 if (qla_tgt_mode_enabled(vha)) {
6521 fc4_feature = BIT_0;
6522 } else if (qla_ini_mode_enabled(vha)) {
6523 fc4_feature = BIT_1;
6524 } else if (qla_dual_mode_enabled(vha))
6525 fc4_feature = BIT_0 | BIT_1;
6526
6527 return fc4_feature;
6528 }
6529
6530 /*
6531 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6532 * @ha: HA context
6533 *
6534 * Beginning of ATIO ring has initialization control block already built
6535 * by nvram config routine.
6536 *
6537 * Returns 0 on success.
6538 */
6539 void
6540 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6541 {
6542 struct qla_hw_data *ha = vha->hw;
6543 uint16_t cnt;
6544 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6545
6546 if (qla_ini_mode_enabled(vha))
6547 return;
6548
6549 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6550 pkt->u.raw.signature = ATIO_PROCESSED;
6551 pkt++;
6552 }
6553
6554 }
6555
6556 /*
6557 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6558 * @ha: SCSI driver HA context
6559 */
6560 void
6561 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6562 {
6563 struct qla_hw_data *ha = vha->hw;
6564 struct atio_from_isp *pkt;
6565 int cnt, i;
6566
6567 if (!ha->flags.fw_started)
6568 return;
6569
6570 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6571 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
6572 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6573 cnt = pkt->u.raw.entry_count;
6574
6575 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6576 /*
6577 * This packet is corrupted. The header + payload
6578 * can not be trusted. There is no point in passing
6579 * it further up.
6580 */
6581 ql_log(ql_log_warn, vha, 0xd03c,
6582 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6583 pkt->u.isp24.fcp_hdr.s_id,
6584 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6585 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6586
6587 adjust_corrupted_atio(pkt);
6588 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6589 ha_locked, 0);
6590 } else {
6591 qlt_24xx_atio_pkt_all_vps(vha,
6592 (struct atio_from_isp *)pkt, ha_locked);
6593 }
6594
6595 for (i = 0; i < cnt; i++) {
6596 ha->tgt.atio_ring_index++;
6597 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6598 ha->tgt.atio_ring_index = 0;
6599 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6600 } else
6601 ha->tgt.atio_ring_ptr++;
6602
6603 pkt->u.raw.signature = ATIO_PROCESSED;
6604 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6605 }
6606 wmb();
6607 }
6608
6609 /* Adjust ring index */
6610 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6611 }
6612
6613 void
6614 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6615 {
6616 struct qla_hw_data *ha = vha->hw;
6617 struct qla_msix_entry *msix = &ha->msix_entries[2];
6618 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6619
6620 if (!QLA_TGT_MODE_ENABLED())
6621 return;
6622
6623 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6624 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6625 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6626
6627 if (ha->flags.msix_enabled) {
6628 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6629 if (IS_QLA2071(ha)) {
6630 /* 4 ports Baker: Enable Interrupt Handshake */
6631 icb->msix_atio = 0;
6632 icb->firmware_options_2 |= BIT_26;
6633 } else {
6634 icb->msix_atio = cpu_to_le16(msix->entry);
6635 icb->firmware_options_2 &= ~BIT_26;
6636 }
6637 ql_dbg(ql_dbg_init, vha, 0xf072,
6638 "Registering ICB vector 0x%x for atio que.\n",
6639 msix->entry);
6640 }
6641 } else {
6642 /* INTx|MSI */
6643 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6644 icb->msix_atio = 0;
6645 icb->firmware_options_2 |= BIT_26;
6646 ql_dbg(ql_dbg_init, vha, 0xf072,
6647 "%s: Use INTx for ATIOQ.\n", __func__);
6648 }
6649 }
6650 }
6651
6652 void
6653 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6654 {
6655 struct qla_hw_data *ha = vha->hw;
6656 u32 tmp;
6657
6658 if (!QLA_TGT_MODE_ENABLED())
6659 return;
6660
6661 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6662 if (!ha->tgt.saved_set) {
6663 /* We save only once */
6664 ha->tgt.saved_exchange_count = nv->exchange_count;
6665 ha->tgt.saved_firmware_options_1 =
6666 nv->firmware_options_1;
6667 ha->tgt.saved_firmware_options_2 =
6668 nv->firmware_options_2;
6669 ha->tgt.saved_firmware_options_3 =
6670 nv->firmware_options_3;
6671 ha->tgt.saved_set = 1;
6672 }
6673
6674 if (qla_tgt_mode_enabled(vha))
6675 nv->exchange_count = cpu_to_le16(0xFFFF);
6676 else /* dual */
6677 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
6678
6679 /* Enable target mode */
6680 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6681
6682 /* Disable ini mode, if requested */
6683 if (qla_tgt_mode_enabled(vha))
6684 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6685
6686 /* Disable Full Login after LIP */
6687 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6688 /* Enable initial LIP */
6689 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6690 if (ql2xtgt_tape_enable)
6691 /* Enable FC Tape support */
6692 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6693 else
6694 /* Disable FC Tape support */
6695 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6696
6697 /* Disable Full Login after LIP */
6698 nv->host_p &= cpu_to_le32(~BIT_10);
6699
6700 /*
6701 * clear BIT 15 explicitly as we have seen at least
6702 * a couple of instances where this was set and this
6703 * was causing the firmware to not be initialized.
6704 */
6705 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6706 /* Enable target PRLI control */
6707 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6708
6709 if (IS_QLA25XX(ha)) {
6710 /* Change Loop-prefer to Pt-Pt */
6711 tmp = ~(BIT_4|BIT_5|BIT_6);
6712 nv->firmware_options_2 &= cpu_to_le32(tmp);
6713 tmp = P2P << 4;
6714 nv->firmware_options_2 |= cpu_to_le32(tmp);
6715 }
6716 } else {
6717 if (ha->tgt.saved_set) {
6718 nv->exchange_count = ha->tgt.saved_exchange_count;
6719 nv->firmware_options_1 =
6720 ha->tgt.saved_firmware_options_1;
6721 nv->firmware_options_2 =
6722 ha->tgt.saved_firmware_options_2;
6723 nv->firmware_options_3 =
6724 ha->tgt.saved_firmware_options_3;
6725 }
6726 return;
6727 }
6728
6729 if (ha->base_qpair->enable_class_2) {
6730 if (vha->flags.init_done)
6731 fc_host_supported_classes(vha->host) =
6732 FC_COS_CLASS2 | FC_COS_CLASS3;
6733
6734 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6735 } else {
6736 if (vha->flags.init_done)
6737 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6738
6739 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6740 }
6741 }
6742
6743 void
6744 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6745 struct init_cb_24xx *icb)
6746 {
6747 struct qla_hw_data *ha = vha->hw;
6748
6749 if (!QLA_TGT_MODE_ENABLED())
6750 return;
6751
6752 if (ha->tgt.node_name_set) {
6753 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6754 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6755 }
6756
6757 /* disable ZIO at start time. */
6758 if (!vha->flags.init_done) {
6759 uint32_t tmp;
6760 tmp = le32_to_cpu(icb->firmware_options_2);
6761 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6762 icb->firmware_options_2 = cpu_to_le32(tmp);
6763 }
6764 }
6765
6766 void
6767 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6768 {
6769 struct qla_hw_data *ha = vha->hw;
6770 u32 tmp;
6771
6772 if (!QLA_TGT_MODE_ENABLED())
6773 return;
6774
6775 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6776 if (!ha->tgt.saved_set) {
6777 /* We save only once */
6778 ha->tgt.saved_exchange_count = nv->exchange_count;
6779 ha->tgt.saved_firmware_options_1 =
6780 nv->firmware_options_1;
6781 ha->tgt.saved_firmware_options_2 =
6782 nv->firmware_options_2;
6783 ha->tgt.saved_firmware_options_3 =
6784 nv->firmware_options_3;
6785 ha->tgt.saved_set = 1;
6786 }
6787
6788 if (qla_tgt_mode_enabled(vha))
6789 nv->exchange_count = cpu_to_le16(0xFFFF);
6790 else /* dual */
6791 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
6792
6793 /* Enable target mode */
6794 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6795
6796 /* Disable ini mode, if requested */
6797 if (qla_tgt_mode_enabled(vha))
6798 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6799 /* Disable Full Login after LIP */
6800 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6801 /* Enable initial LIP */
6802 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6803 /*
6804 * clear BIT 15 explicitly as we have seen at
6805 * least a couple of instances where this was set
6806 * and this was causing the firmware to not be
6807 * initialized.
6808 */
6809 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6810 if (ql2xtgt_tape_enable)
6811 /* Enable FC tape support */
6812 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6813 else
6814 /* Disable FC tape support */
6815 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6816
6817 /* Disable Full Login after LIP */
6818 nv->host_p &= cpu_to_le32(~BIT_10);
6819 /* Enable target PRLI control */
6820 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6821
6822 /* Change Loop-prefer to Pt-Pt */
6823 tmp = ~(BIT_4|BIT_5|BIT_6);
6824 nv->firmware_options_2 &= cpu_to_le32(tmp);
6825 tmp = P2P << 4;
6826 nv->firmware_options_2 |= cpu_to_le32(tmp);
6827 } else {
6828 if (ha->tgt.saved_set) {
6829 nv->exchange_count = ha->tgt.saved_exchange_count;
6830 nv->firmware_options_1 =
6831 ha->tgt.saved_firmware_options_1;
6832 nv->firmware_options_2 =
6833 ha->tgt.saved_firmware_options_2;
6834 nv->firmware_options_3 =
6835 ha->tgt.saved_firmware_options_3;
6836 }
6837 return;
6838 }
6839
6840 if (ha->base_qpair->enable_class_2) {
6841 if (vha->flags.init_done)
6842 fc_host_supported_classes(vha->host) =
6843 FC_COS_CLASS2 | FC_COS_CLASS3;
6844
6845 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6846 } else {
6847 if (vha->flags.init_done)
6848 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6849
6850 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6851 }
6852 }
6853
6854 void
6855 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6856 struct init_cb_81xx *icb)
6857 {
6858 struct qla_hw_data *ha = vha->hw;
6859
6860 if (!QLA_TGT_MODE_ENABLED())
6861 return;
6862
6863 if (ha->tgt.node_name_set) {
6864 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6865 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6866 }
6867
6868 /* disable ZIO at start time. */
6869 if (!vha->flags.init_done) {
6870 uint32_t tmp;
6871 tmp = le32_to_cpu(icb->firmware_options_2);
6872 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6873 icb->firmware_options_2 = cpu_to_le32(tmp);
6874 }
6875
6876 }
6877
6878 void
6879 qlt_83xx_iospace_config(struct qla_hw_data *ha)
6880 {
6881 if (!QLA_TGT_MODE_ENABLED())
6882 return;
6883
6884 ha->msix_count += 1; /* For ATIO Q */
6885 }
6886
6887
6888 void
6889 qlt_modify_vp_config(struct scsi_qla_host *vha,
6890 struct vp_config_entry_24xx *vpmod)
6891 {
6892 /* enable target mode. Bit5 = 1 => disable */
6893 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
6894 vpmod->options_idx1 &= ~BIT_5;
6895
6896 /* Disable ini mode, if requested. bit4 = 1 => disable */
6897 if (qla_tgt_mode_enabled(vha))
6898 vpmod->options_idx1 &= ~BIT_4;
6899 }
6900
6901 void
6902 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6903 {
6904 int rc;
6905
6906 if (!QLA_TGT_MODE_ENABLED())
6907 return;
6908
6909 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6910 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6911 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6912 } else {
6913 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6914 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6915 }
6916
6917 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6918 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
6919
6920 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6921 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6922 qlt_unknown_atio_work_fn);
6923
6924 qlt_clear_mode(base_vha);
6925
6926 rc = btree_init32(&ha->tgt.host_map);
6927 if (rc)
6928 ql_log(ql_log_info, base_vha, 0xd03d,
6929 "Unable to initialize ha->host_map btree\n");
6930
6931 qlt_update_vp_map(base_vha, SET_VP_IDX);
6932 }
6933
6934 irqreturn_t
6935 qla83xx_msix_atio_q(int irq, void *dev_id)
6936 {
6937 struct rsp_que *rsp;
6938 scsi_qla_host_t *vha;
6939 struct qla_hw_data *ha;
6940 unsigned long flags;
6941
6942 rsp = (struct rsp_que *) dev_id;
6943 ha = rsp->hw;
6944 vha = pci_get_drvdata(ha->pdev);
6945
6946 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6947
6948 qlt_24xx_process_atio_queue(vha, 0);
6949
6950 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6951
6952 return IRQ_HANDLED;
6953 }
6954
6955 static void
6956 qlt_handle_abts_recv_work(struct work_struct *work)
6957 {
6958 struct qla_tgt_sess_op *op = container_of(work,
6959 struct qla_tgt_sess_op, work);
6960 scsi_qla_host_t *vha = op->vha;
6961 struct qla_hw_data *ha = vha->hw;
6962 unsigned long flags;
6963
6964 if (qla2x00_reset_active(vha) ||
6965 (op->chip_reset != ha->base_qpair->chip_reset))
6966 return;
6967
6968 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6969 qlt_24xx_process_atio_queue(vha, 0);
6970 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6971
6972 spin_lock_irqsave(&ha->hardware_lock, flags);
6973 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
6974 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6975
6976 kfree(op);
6977 }
6978
6979 void
6980 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
6981 response_t *pkt)
6982 {
6983 struct qla_tgt_sess_op *op;
6984
6985 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6986
6987 if (!op) {
6988 /* do not reach for ATIO queue here. This is best effort err
6989 * recovery at this point.
6990 */
6991 qlt_response_pkt_all_vps(vha, rsp, pkt);
6992 return;
6993 }
6994
6995 memcpy(&op->atio, pkt, sizeof(*pkt));
6996 op->vha = vha;
6997 op->chip_reset = vha->hw->base_qpair->chip_reset;
6998 op->rsp = rsp;
6999 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7000 queue_work(qla_tgt_wq, &op->work);
7001 return;
7002 }
7003
7004 int
7005 qlt_mem_alloc(struct qla_hw_data *ha)
7006 {
7007 if (!QLA_TGT_MODE_ENABLED())
7008 return 0;
7009
7010 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
7011 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
7012 if (!ha->tgt.tgt_vp_map)
7013 return -ENOMEM;
7014
7015 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7016 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7017 &ha->tgt.atio_dma, GFP_KERNEL);
7018 if (!ha->tgt.atio_ring) {
7019 kfree(ha->tgt.tgt_vp_map);
7020 return -ENOMEM;
7021 }
7022 return 0;
7023 }
7024
7025 void
7026 qlt_mem_free(struct qla_hw_data *ha)
7027 {
7028 if (!QLA_TGT_MODE_ENABLED())
7029 return;
7030
7031 if (ha->tgt.atio_ring) {
7032 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7033 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7034 ha->tgt.atio_dma);
7035 }
7036 kfree(ha->tgt.tgt_vp_map);
7037 }
7038
7039 /* vport_slock to be held by the caller */
7040 void
7041 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7042 {
7043 void *slot;
7044 u32 key;
7045 int rc;
7046
7047 if (!QLA_TGT_MODE_ENABLED())
7048 return;
7049
7050 key = vha->d_id.b24;
7051
7052 switch (cmd) {
7053 case SET_VP_IDX:
7054 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7055 break;
7056 case SET_AL_PA:
7057 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7058 if (!slot) {
7059 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
7060 "Save vha in host_map %p %06x\n", vha, key);
7061 rc = btree_insert32(&vha->hw->tgt.host_map,
7062 key, vha, GFP_ATOMIC);
7063 if (rc)
7064 ql_log(ql_log_info, vha, 0xd03e,
7065 "Unable to insert s_id into host_map: %06x\n",
7066 key);
7067 return;
7068 }
7069 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7070 "replace existing vha in host_map %p %06x\n", vha, key);
7071 btree_update32(&vha->hw->tgt.host_map, key, vha);
7072 break;
7073 case RESET_VP_IDX:
7074 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7075 break;
7076 case RESET_AL_PA:
7077 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
7078 "clear vha in host_map %p %06x\n", vha, key);
7079 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7080 if (slot)
7081 btree_remove32(&vha->hw->tgt.host_map, key);
7082 vha->d_id.b24 = 0;
7083 break;
7084 }
7085 }
7086
7087 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7088 {
7089
7090 if (!vha->d_id.b24) {
7091 vha->d_id = id;
7092 qlt_update_vp_map(vha, SET_AL_PA);
7093 } else if (vha->d_id.b24 != id.b24) {
7094 qlt_update_vp_map(vha, RESET_AL_PA);
7095 vha->d_id = id;
7096 qlt_update_vp_map(vha, SET_AL_PA);
7097 }
7098 }
7099
7100 static int __init qlt_parse_ini_mode(void)
7101 {
7102 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7103 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7104 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7105 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7106 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7107 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
7108 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7109 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
7110 else
7111 return false;
7112
7113 return true;
7114 }
7115
7116 int __init qlt_init(void)
7117 {
7118 int ret;
7119
7120 if (!qlt_parse_ini_mode()) {
7121 ql_log(ql_log_fatal, NULL, 0xe06b,
7122 "qlt_parse_ini_mode() failed\n");
7123 return -EINVAL;
7124 }
7125
7126 if (!QLA_TGT_MODE_ENABLED())
7127 return 0;
7128
7129 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7130 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7131 qla_tgt_mgmt_cmd), 0, NULL);
7132 if (!qla_tgt_mgmt_cmd_cachep) {
7133 ql_log(ql_log_fatal, NULL, 0xd04b,
7134 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
7135 return -ENOMEM;
7136 }
7137
7138 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
7139 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7140 0, NULL);
7141
7142 if (!qla_tgt_plogi_cachep) {
7143 ql_log(ql_log_fatal, NULL, 0xe06d,
7144 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7145 ret = -ENOMEM;
7146 goto out_mgmt_cmd_cachep;
7147 }
7148
7149 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7150 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7151 if (!qla_tgt_mgmt_cmd_mempool) {
7152 ql_log(ql_log_fatal, NULL, 0xe06e,
7153 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7154 ret = -ENOMEM;
7155 goto out_plogi_cachep;
7156 }
7157
7158 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7159 if (!qla_tgt_wq) {
7160 ql_log(ql_log_fatal, NULL, 0xe06f,
7161 "alloc_workqueue for qla_tgt_wq failed\n");
7162 ret = -ENOMEM;
7163 goto out_cmd_mempool;
7164 }
7165 /*
7166 * Return 1 to signal that initiator-mode is being disabled
7167 */
7168 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7169
7170 out_cmd_mempool:
7171 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7172 out_plogi_cachep:
7173 kmem_cache_destroy(qla_tgt_plogi_cachep);
7174 out_mgmt_cmd_cachep:
7175 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7176 return ret;
7177 }
7178
7179 void qlt_exit(void)
7180 {
7181 if (!QLA_TGT_MODE_ENABLED())
7182 return;
7183
7184 destroy_workqueue(qla_tgt_wq);
7185 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7186 kmem_cache_destroy(qla_tgt_plogi_cachep);
7187 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7188 }
Linux with added FPC-III support