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Linux 4.16.11
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / qla_target.c
blobb49ac85f3de2254694e728f75d4cf2fa7e260662
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 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
668
669 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
670 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
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 static 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 schedule_work(&sess->nvme_del_work);
1174
1175 INIT_WORK(&sess->free_work, qlt_free_session_done);
1176 schedule_work(&sess->free_work);
1177 }
1178 EXPORT_SYMBOL(qlt_unreg_sess);
1179
1180 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1181 {
1182 struct qla_hw_data *ha = vha->hw;
1183 struct fc_port *sess = NULL;
1184 uint16_t loop_id;
1185 int res = 0;
1186 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
1187 unsigned long flags;
1188
1189 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1190 if (loop_id == 0xFFFF) {
1191 /* Global event */
1192 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
1193 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1194 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
1195 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1196 } else {
1197 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1198 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
1199 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1200 }
1201
1202 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1203 "Using sess for qla_tgt_reset: %p\n", sess);
1204 if (!sess) {
1205 res = -ESRCH;
1206 return res;
1207 }
1208
1209 ql_dbg(ql_dbg_tgt, vha, 0xe047,
1210 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1211 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
1212 mcmd, loop_id);
1213
1214 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
1215 }
1216
1217 static void qla24xx_chk_fcp_state(struct fc_port *sess)
1218 {
1219 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
1220 sess->logout_on_delete = 0;
1221 sess->logo_ack_needed = 0;
1222 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1223 sess->scan_state = 0;
1224 }
1225 }
1226
1227 void qlt_schedule_sess_for_deletion(struct fc_port *sess)
1228 {
1229 struct qla_tgt *tgt = sess->tgt;
1230 struct qla_hw_data *ha = sess->vha->hw;
1231 unsigned long flags;
1232
1233 if (sess->disc_state == DSC_DELETE_PEND)
1234 return;
1235
1236 if (sess->disc_state == DSC_DELETED) {
1237 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1238 wake_up_all(&tgt->waitQ);
1239 if (sess->vha->fcport_count == 0)
1240 wake_up_all(&sess->vha->fcport_waitQ);
1241
1242 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1243 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
1244 return;
1245 }
1246
1247 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1248 if (sess->deleted == QLA_SESS_DELETED)
1249 sess->logout_on_delete = 0;
1250
1251 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1252 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1253 return;
1254 }
1255 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1256 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1257
1258 sess->disc_state = DSC_DELETE_PEND;
1259
1260 qla24xx_chk_fcp_state(sess);
1261
1262 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1263 "Scheduling sess %p for deletion\n", sess);
1264
1265 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn);
1266 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
1267 }
1268
1269 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
1270 {
1271 struct fc_port *sess;
1272 scsi_qla_host_t *vha = tgt->vha;
1273
1274 list_for_each_entry(sess, &vha->vp_fcports, list) {
1275 if (sess->se_sess)
1276 qlt_schedule_sess_for_deletion(sess);
1277 }
1278
1279 /* At this point tgt could be already dead */
1280 }
1281
1282 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1283 uint16_t *loop_id)
1284 {
1285 struct qla_hw_data *ha = vha->hw;
1286 dma_addr_t gid_list_dma;
1287 struct gid_list_info *gid_list;
1288 char *id_iter;
1289 int res, rc, i;
1290 uint16_t entries;
1291
1292 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1293 &gid_list_dma, GFP_KERNEL);
1294 if (!gid_list) {
1295 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1296 "qla_target(%d): DMA Alloc failed of %u\n",
1297 vha->vp_idx, qla2x00_gid_list_size(ha));
1298 return -ENOMEM;
1299 }
1300
1301 /* Get list of logged in devices */
1302 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
1303 if (rc != QLA_SUCCESS) {
1304 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1305 "qla_target(%d): get_id_list() failed: %x\n",
1306 vha->vp_idx, rc);
1307 res = -EBUSY;
1308 goto out_free_id_list;
1309 }
1310
1311 id_iter = (char *)gid_list;
1312 res = -ENOENT;
1313 for (i = 0; i < entries; i++) {
1314 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1315 if ((gid->al_pa == s_id[2]) &&
1316 (gid->area == s_id[1]) &&
1317 (gid->domain == s_id[0])) {
1318 *loop_id = le16_to_cpu(gid->loop_id);
1319 res = 0;
1320 break;
1321 }
1322 id_iter += ha->gid_list_info_size;
1323 }
1324
1325 out_free_id_list:
1326 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1327 gid_list, gid_list_dma);
1328 return res;
1329 }
1330
1331 /*
1332 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1333 * Caller must put it.
1334 */
1335 static struct fc_port *qlt_create_sess(
1336 struct scsi_qla_host *vha,
1337 fc_port_t *fcport,
1338 bool local)
1339 {
1340 struct qla_hw_data *ha = vha->hw;
1341 struct fc_port *sess = fcport;
1342 unsigned long flags;
1343
1344 if (vha->vha_tgt.qla_tgt->tgt_stop)
1345 return NULL;
1346
1347 if (fcport->se_sess) {
1348 if (!kref_get_unless_zero(&sess->sess_kref)) {
1349 ql_dbg(ql_dbg_disc, vha, 0x20f6,
1350 "%s: kref_get_unless_zero failed for %8phC\n",
1351 __func__, sess->port_name);
1352 return NULL;
1353 }
1354 return fcport;
1355 }
1356 sess->tgt = vha->vha_tgt.qla_tgt;
1357 sess->local = local;
1358
1359 /*
1360 * Under normal circumstances we want to logout from firmware when
1361 * session eventually ends and release corresponding nport handle.
1362 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
1363 * code will adjust these flags as necessary.
1364 */
1365 sess->logout_on_delete = 1;
1366 sess->keep_nport_handle = 0;
1367 sess->logout_completed = 0;
1368
1369 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1370 &fcport->port_name[0], sess) < 0) {
1371 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
1372 "(%d) %8phC check_initiator_node_acl failed\n",
1373 vha->vp_idx, fcport->port_name);
1374 return NULL;
1375 } else {
1376 kref_init(&fcport->sess_kref);
1377 /*
1378 * Take an extra reference to ->sess_kref here to handle
1379 * fc_port access across ->tgt.sess_lock reaquire.
1380 */
1381 if (!kref_get_unless_zero(&sess->sess_kref)) {
1382 ql_dbg(ql_dbg_disc, vha, 0x20f7,
1383 "%s: kref_get_unless_zero failed for %8phC\n",
1384 __func__, sess->port_name);
1385 return NULL;
1386 }
1387
1388 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1389 if (!IS_SW_RESV_ADDR(sess->d_id))
1390 vha->vha_tgt.qla_tgt->sess_count++;
1391
1392 qlt_do_generation_tick(vha, &sess->generation);
1393 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1394 }
1395
1396 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1397 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1398 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1399 vha->vha_tgt.qla_tgt->sess_count);
1400
1401 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
1402 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1403 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1404 vha->vp_idx, local ? "local " : "", fcport->port_name,
1405 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1406 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
1407
1408 return sess;
1409 }
1410
1411 /*
1412 * max_gen - specifies maximum session generation
1413 * at which this deletion requestion is still valid
1414 */
1415 void
1416 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
1417 {
1418 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1419 struct fc_port *sess = fcport;
1420 unsigned long flags;
1421
1422 if (!vha->hw->tgt.tgt_ops)
1423 return;
1424
1425 if (!tgt)
1426 return;
1427
1428 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
1429 if (tgt->tgt_stop) {
1430 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1431 return;
1432 }
1433 if (!sess->se_sess) {
1434 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1435 return;
1436 }
1437
1438 if (max_gen - sess->generation < 0) {
1439 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1440 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1441 "Ignoring stale deletion request for se_sess %p / sess %p"
1442 " for port %8phC, req_gen %d, sess_gen %d\n",
1443 sess->se_sess, sess, sess->port_name, max_gen,
1444 sess->generation);
1445 return;
1446 }
1447
1448 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1449
1450 sess->local = 1;
1451 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1452 qlt_schedule_sess_for_deletion(sess);
1453 }
1454
1455 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1456 {
1457 struct qla_hw_data *ha = tgt->ha;
1458 unsigned long flags;
1459 int res;
1460 /*
1461 * We need to protect against race, when tgt is freed before or
1462 * inside wake_up()
1463 */
1464 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1465 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1466 "tgt %p, sess_count=%d\n",
1467 tgt, tgt->sess_count);
1468 res = (tgt->sess_count == 0);
1469 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1470
1471 return res;
1472 }
1473
1474 /* Called by tcm_qla2xxx configfs code */
1475 int qlt_stop_phase1(struct qla_tgt *tgt)
1476 {
1477 struct scsi_qla_host *vha = tgt->vha;
1478 struct qla_hw_data *ha = tgt->ha;
1479 unsigned long flags;
1480
1481 mutex_lock(&qla_tgt_mutex);
1482 if (!vha->fc_vport) {
1483 struct Scsi_Host *sh = vha->host;
1484 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1485 bool npiv_vports;
1486
1487 spin_lock_irqsave(sh->host_lock, flags);
1488 npiv_vports = (fc_host->npiv_vports_inuse);
1489 spin_unlock_irqrestore(sh->host_lock, flags);
1490
1491 if (npiv_vports) {
1492 mutex_unlock(&qla_tgt_mutex);
1493 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1494 "NPIV is in use. Can not stop target\n");
1495 return -EPERM;
1496 }
1497 }
1498 if (tgt->tgt_stop || tgt->tgt_stopped) {
1499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1500 "Already in tgt->tgt_stop or tgt_stopped state\n");
1501 mutex_unlock(&qla_tgt_mutex);
1502 return -EPERM;
1503 }
1504
1505 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1506 vha->host_no, vha);
1507 /*
1508 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1509 * Lock is needed, because we still can get an incoming packet.
1510 */
1511 mutex_lock(&vha->vha_tgt.tgt_mutex);
1512 tgt->tgt_stop = 1;
1513 qlt_clear_tgt_db(tgt);
1514 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1515 mutex_unlock(&qla_tgt_mutex);
1516
1517 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1518 "Waiting for sess works (tgt %p)", tgt);
1519 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1520 while (!list_empty(&tgt->sess_works_list)) {
1521 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1522 flush_scheduled_work();
1523 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1524 }
1525 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1526
1527 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1528 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
1529
1530 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1531
1532 /* Big hammer */
1533 if (!ha->flags.host_shutting_down &&
1534 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
1535 qlt_disable_vha(vha);
1536
1537 /* Wait for sessions to clear out (just in case) */
1538 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1539 return 0;
1540 }
1541 EXPORT_SYMBOL(qlt_stop_phase1);
1542
1543 /* Called by tcm_qla2xxx configfs code */
1544 void qlt_stop_phase2(struct qla_tgt *tgt)
1545 {
1546 scsi_qla_host_t *vha = tgt->vha;
1547
1548 if (tgt->tgt_stopped) {
1549 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1550 "Already in tgt->tgt_stopped state\n");
1551 dump_stack();
1552 return;
1553 }
1554 if (!tgt->tgt_stop) {
1555 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1556 "%s: phase1 stop is not completed\n", __func__);
1557 dump_stack();
1558 return;
1559 }
1560
1561 mutex_lock(&vha->vha_tgt.tgt_mutex);
1562 tgt->tgt_stop = 0;
1563 tgt->tgt_stopped = 1;
1564 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1565
1566 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
1567 tgt);
1568 }
1569 EXPORT_SYMBOL(qlt_stop_phase2);
1570
1571 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1572 static void qlt_release(struct qla_tgt *tgt)
1573 {
1574 scsi_qla_host_t *vha = tgt->vha;
1575 void *node;
1576 u64 key = 0;
1577 u16 i;
1578 struct qla_qpair_hint *h;
1579 struct qla_hw_data *ha = vha->hw;
1580
1581 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1582 !tgt->tgt_stopped)
1583 qlt_stop_phase1(tgt);
1584
1585 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
1586 qlt_stop_phase2(tgt);
1587
1588 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1589 unsigned long flags;
1590
1591 h = &tgt->qphints[i];
1592 if (h->qpair) {
1593 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1594 list_del(&h->hint_elem);
1595 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1596 h->qpair = NULL;
1597 }
1598 }
1599 kfree(tgt->qphints);
1600 mutex_lock(&qla_tgt_mutex);
1601 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1602 mutex_unlock(&qla_tgt_mutex);
1603
1604 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1605 btree_remove64(&tgt->lun_qpair_map, key);
1606
1607 btree_destroy64(&tgt->lun_qpair_map);
1608
1609 if (vha->vp_idx)
1610 if (ha->tgt.tgt_ops &&
1611 ha->tgt.tgt_ops->remove_target &&
1612 vha->vha_tgt.target_lport_ptr)
1613 ha->tgt.tgt_ops->remove_target(vha);
1614
1615 vha->vha_tgt.qla_tgt = NULL;
1616
1617 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1618 "Release of tgt %p finished\n", tgt);
1619
1620 kfree(tgt);
1621 }
1622
1623 /* ha->hardware_lock supposed to be held on entry */
1624 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1625 const void *param, unsigned int param_size)
1626 {
1627 struct qla_tgt_sess_work_param *prm;
1628 unsigned long flags;
1629
1630 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1631 if (!prm) {
1632 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1633 "qla_target(%d): Unable to create session "
1634 "work, command will be refused", 0);
1635 return -ENOMEM;
1636 }
1637
1638 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1639 "Scheduling work (type %d, prm %p)"
1640 " to find session for param %p (size %d, tgt %p)\n",
1641 type, prm, param, param_size, tgt);
1642
1643 prm->type = type;
1644 memcpy(&prm->tm_iocb, param, param_size);
1645
1646 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1647 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1648 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1649
1650 schedule_work(&tgt->sess_work);
1651
1652 return 0;
1653 }
1654
1655 /*
1656 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1657 */
1658 static void qlt_send_notify_ack(struct qla_qpair *qpair,
1659 struct imm_ntfy_from_isp *ntfy,
1660 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1661 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1662 {
1663 struct scsi_qla_host *vha = qpair->vha;
1664 struct qla_hw_data *ha = vha->hw;
1665 request_t *pkt;
1666 struct nack_to_isp *nack;
1667
1668 if (!ha->flags.fw_started)
1669 return;
1670
1671 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1672
1673 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
1674 if (!pkt) {
1675 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1676 "qla_target(%d): %s failed: unable to allocate "
1677 "request packet\n", vha->vp_idx, __func__);
1678 return;
1679 }
1680
1681 if (vha->vha_tgt.qla_tgt != NULL)
1682 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1683
1684 pkt->entry_type = NOTIFY_ACK_TYPE;
1685 pkt->entry_count = 1;
1686
1687 nack = (struct nack_to_isp *)pkt;
1688 nack->ox_id = ntfy->ox_id;
1689
1690 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
1691 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1692 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1693 nack->u.isp24.flags = ntfy->u.isp24.flags &
1694 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1695 }
1696 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1697 nack->u.isp24.status = ntfy->u.isp24.status;
1698 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1699 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1700 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1701 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1702 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1703 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1704 nack->u.isp24.srr_reject_code = srr_reject_code;
1705 nack->u.isp24.srr_reject_code_expl = srr_explan;
1706 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1707
1708 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1709 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1710 vha->vp_idx, nack->u.isp24.status);
1711
1712 /* Memory Barrier */
1713 wmb();
1714 qla2x00_start_iocbs(vha, qpair->req);
1715 }
1716
1717 /*
1718 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1719 */
1720 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
1721 struct abts_recv_from_24xx *abts, uint32_t status,
1722 bool ids_reversed)
1723 {
1724 struct scsi_qla_host *vha = qpair->vha;
1725 struct qla_hw_data *ha = vha->hw;
1726 struct abts_resp_to_24xx *resp;
1727 uint32_t f_ctl;
1728 uint8_t *p;
1729
1730 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1731 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1732 ha, abts, status);
1733
1734 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1735 NULL);
1736 if (!resp) {
1737 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1738 "qla_target(%d): %s failed: unable to allocate "
1739 "request packet", vha->vp_idx, __func__);
1740 return;
1741 }
1742
1743 resp->entry_type = ABTS_RESP_24XX;
1744 resp->entry_count = 1;
1745 resp->nport_handle = abts->nport_handle;
1746 resp->vp_index = vha->vp_idx;
1747 resp->sof_type = abts->sof_type;
1748 resp->exchange_address = abts->exchange_address;
1749 resp->fcp_hdr_le = abts->fcp_hdr_le;
1750 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1751 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1752 F_CTL_SEQ_INITIATIVE);
1753 p = (uint8_t *)&f_ctl;
1754 resp->fcp_hdr_le.f_ctl[0] = *p++;
1755 resp->fcp_hdr_le.f_ctl[1] = *p++;
1756 resp->fcp_hdr_le.f_ctl[2] = *p;
1757 if (ids_reversed) {
1758 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1759 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1760 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1761 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1762 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1763 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1764 } else {
1765 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1766 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1767 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1768 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1769 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1770 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1771 }
1772 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1773 if (status == FCP_TMF_CMPL) {
1774 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1775 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1776 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1777 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1778 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1779 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1780 } else {
1781 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1782 resp->payload.ba_rjt.reason_code =
1783 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1784 /* Other bytes are zero */
1785 }
1786
1787 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1788
1789 /* Memory Barrier */
1790 wmb();
1791 if (qpair->reqq_start_iocbs)
1792 qpair->reqq_start_iocbs(qpair);
1793 else
1794 qla2x00_start_iocbs(vha, qpair->req);
1795 }
1796
1797 /*
1798 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1799 */
1800 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1801 struct abts_resp_from_24xx_fw *entry)
1802 {
1803 struct ctio7_to_24xx *ctio;
1804
1805 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1806 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1807
1808 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
1809 vha->hw->base_qpair, NULL);
1810 if (ctio == NULL) {
1811 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1812 "qla_target(%d): %s failed: unable to allocate "
1813 "request packet\n", vha->vp_idx, __func__);
1814 return;
1815 }
1816
1817 /*
1818 * We've got on entrance firmware's response on by us generated
1819 * ABTS response. So, in it ID fields are reversed.
1820 */
1821
1822 ctio->entry_type = CTIO_TYPE7;
1823 ctio->entry_count = 1;
1824 ctio->nport_handle = entry->nport_handle;
1825 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1826 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1827 ctio->vp_index = vha->vp_idx;
1828 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1829 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1830 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1831 ctio->exchange_addr = entry->exchange_addr_to_abort;
1832 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1833 CTIO7_FLAGS_TERMINATE);
1834 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
1835
1836 /* Memory Barrier */
1837 wmb();
1838 qla2x00_start_iocbs(vha, vha->req);
1839
1840 qlt_24xx_send_abts_resp(vha->hw->base_qpair,
1841 (struct abts_recv_from_24xx *)entry,
1842 FCP_TMF_CMPL, true);
1843 }
1844
1845 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1846 {
1847 struct qla_tgt_sess_op *op;
1848 struct qla_tgt_cmd *cmd;
1849 unsigned long flags;
1850
1851 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1852 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1853 if (tag == op->atio.u.isp24.exchange_addr) {
1854 op->aborted = true;
1855 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1856 return 1;
1857 }
1858 }
1859
1860 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1861 if (tag == op->atio.u.isp24.exchange_addr) {
1862 op->aborted = true;
1863 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1864 return 1;
1865 }
1866 }
1867
1868 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1869 if (tag == cmd->atio.u.isp24.exchange_addr) {
1870 cmd->aborted = 1;
1871 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1872 return 1;
1873 }
1874 }
1875 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1876
1877 return 0;
1878 }
1879
1880 /* drop cmds for the given lun
1881 * XXX only looks for cmds on the port through which lun reset was recieved
1882 * XXX does not go through the list of other port (which may have cmds
1883 * for the same lun)
1884 */
1885 static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1886 u64 lun, uint8_t *s_id)
1887 {
1888 struct qla_tgt_sess_op *op;
1889 struct qla_tgt_cmd *cmd;
1890 uint32_t key;
1891 unsigned long flags;
1892
1893 key = sid_to_key(s_id);
1894 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1895 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1896 uint32_t op_key;
1897 u64 op_lun;
1898
1899 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1900 op_lun = scsilun_to_int(
1901 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1902 if (op_key == key && op_lun == lun)
1903 op->aborted = true;
1904 }
1905
1906 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1907 uint32_t op_key;
1908 u64 op_lun;
1909
1910 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1911 op_lun = scsilun_to_int(
1912 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1913 if (op_key == key && op_lun == lun)
1914 op->aborted = true;
1915 }
1916
1917 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1918 uint32_t cmd_key;
1919 u64 cmd_lun;
1920
1921 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1922 cmd_lun = scsilun_to_int(
1923 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1924 if (cmd_key == key && cmd_lun == lun)
1925 cmd->aborted = 1;
1926 }
1927 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1928 }
1929
1930 /* ha->hardware_lock supposed to be held on entry */
1931 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1932 struct abts_recv_from_24xx *abts, struct fc_port *sess)
1933 {
1934 struct qla_hw_data *ha = vha->hw;
1935 struct qla_tgt_mgmt_cmd *mcmd;
1936 int rc;
1937
1938 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1939 /* send TASK_ABORT response immediately */
1940 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false);
1941 return 0;
1942 }
1943
1944 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1945 "qla_target(%d): task abort (tag=%d)\n",
1946 vha->vp_idx, abts->exchange_addr_to_abort);
1947
1948 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1949 if (mcmd == NULL) {
1950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1951 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1952 vha->vp_idx, __func__);
1953 return -ENOMEM;
1954 }
1955 memset(mcmd, 0, sizeof(*mcmd));
1956
1957 mcmd->sess = sess;
1958 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1959 mcmd->reset_count = ha->base_qpair->chip_reset;
1960 mcmd->tmr_func = QLA_TGT_ABTS;
1961 mcmd->qpair = ha->base_qpair;
1962 mcmd->vha = vha;
1963
1964 /*
1965 * LUN is looked up by target-core internally based on the passed
1966 * abts->exchange_addr_to_abort tag.
1967 */
1968 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func,
1969 abts->exchange_addr_to_abort);
1970 if (rc != 0) {
1971 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1972 "qla_target(%d): tgt_ops->handle_tmr()"
1973 " failed: %d", vha->vp_idx, rc);
1974 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1975 return -EFAULT;
1976 }
1977
1978 return 0;
1979 }
1980
1981 /*
1982 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1983 */
1984 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1985 struct abts_recv_from_24xx *abts)
1986 {
1987 struct qla_hw_data *ha = vha->hw;
1988 struct fc_port *sess;
1989 uint32_t tag = abts->exchange_addr_to_abort;
1990 uint8_t s_id[3];
1991 int rc;
1992 unsigned long flags;
1993
1994 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1995 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1996 "qla_target(%d): ABTS: Abort Sequence not "
1997 "supported\n", vha->vp_idx);
1998 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1999 false);
2000 return;
2001 }
2002
2003 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2004 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2005 "qla_target(%d): ABTS: Unknown Exchange "
2006 "Address received\n", vha->vp_idx);
2007 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2008 false);
2009 return;
2010 }
2011
2012 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2013 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2014 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
2015 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
2016 le32_to_cpu(abts->fcp_hdr_le.parameter));
2017
2018 s_id[0] = abts->fcp_hdr_le.s_id[2];
2019 s_id[1] = abts->fcp_hdr_le.s_id[1];
2020 s_id[2] = abts->fcp_hdr_le.s_id[0];
2021
2022 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2023 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2024 if (!sess) {
2025 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2026 "qla_target(%d): task abort for non-existant session\n",
2027 vha->vp_idx);
2028 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2029
2030 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2031 false);
2032 return;
2033 }
2034 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2035
2036
2037 if (sess->deleted) {
2038 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2039 false);
2040 return;
2041 }
2042
2043 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2044 if (rc != 0) {
2045 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2046 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2047 vha->vp_idx, rc);
2048 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2049 false);
2050 return;
2051 }
2052 }
2053
2054 /*
2055 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2056 */
2057 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2058 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2059 {
2060 struct scsi_qla_host *ha = mcmd->vha;
2061 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2062 struct ctio7_to_24xx *ctio;
2063 uint16_t temp;
2064
2065 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2066 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2067 ha, atio, resp_code);
2068
2069
2070 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2071 if (ctio == NULL) {
2072 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2073 "qla_target(%d): %s failed: unable to allocate "
2074 "request packet\n", ha->vp_idx, __func__);
2075 return;
2076 }
2077
2078 ctio->entry_type = CTIO_TYPE7;
2079 ctio->entry_count = 1;
2080 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2081 ctio->nport_handle = mcmd->sess->loop_id;
2082 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2083 ctio->vp_index = ha->vp_idx;
2084 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2085 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2086 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2087 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2088 temp = (atio->u.isp24.attr << 9)|
2089 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2090 ctio->u.status1.flags = cpu_to_le16(temp);
2091 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2092 ctio->u.status1.ox_id = cpu_to_le16(temp);
2093 ctio->u.status1.scsi_status =
2094 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2095 ctio->u.status1.response_len = cpu_to_le16(8);
2096 ctio->u.status1.sense_data[0] = resp_code;
2097
2098 /* Memory Barrier */
2099 wmb();
2100 if (qpair->reqq_start_iocbs)
2101 qpair->reqq_start_iocbs(qpair);
2102 else
2103 qla2x00_start_iocbs(ha, qpair->req);
2104 }
2105
2106 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2107 {
2108 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2109 }
2110 EXPORT_SYMBOL(qlt_free_mcmd);
2111
2112 /*
2113 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2114 * reacquire
2115 */
2116 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
2117 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2118 {
2119 struct atio_from_isp *atio = &cmd->atio;
2120 struct ctio7_to_24xx *ctio;
2121 uint16_t temp;
2122 struct scsi_qla_host *vha = cmd->vha;
2123
2124 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2125 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2126 "sense_key=%02x, asc=%02x, ascq=%02x",
2127 vha, atio, scsi_status, sense_key, asc, ascq);
2128
2129 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2130 if (!ctio) {
2131 ql_dbg(ql_dbg_async, vha, 0x3067,
2132 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2133 vha->host_no, __func__);
2134 goto out;
2135 }
2136
2137 ctio->entry_type = CTIO_TYPE7;
2138 ctio->entry_count = 1;
2139 ctio->handle = QLA_TGT_SKIP_HANDLE;
2140 ctio->nport_handle = cmd->sess->loop_id;
2141 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2142 ctio->vp_index = vha->vp_idx;
2143 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2144 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2145 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2146 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2147 temp = (atio->u.isp24.attr << 9) |
2148 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2149 ctio->u.status1.flags = cpu_to_le16(temp);
2150 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2151 ctio->u.status1.ox_id = cpu_to_le16(temp);
2152 ctio->u.status1.scsi_status =
2153 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2154 ctio->u.status1.response_len = cpu_to_le16(18);
2155 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2156
2157 if (ctio->u.status1.residual != 0)
2158 ctio->u.status1.scsi_status |=
2159 cpu_to_le16(SS_RESIDUAL_UNDER);
2160
2161 /* Response code and sense key */
2162 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2163 (&ctio->u.status1.sense_data)[0]);
2164 /* Additional sense length */
2165 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2166 /* ASC and ASCQ */
2167 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2168 (&ctio->u.status1.sense_data)[3]);
2169
2170 /* Memory Barrier */
2171 wmb();
2172
2173 if (qpair->reqq_start_iocbs)
2174 qpair->reqq_start_iocbs(qpair);
2175 else
2176 qla2x00_start_iocbs(vha, qpair->req);
2177
2178 out:
2179 return;
2180 }
2181
2182 /* callback from target fabric module code */
2183 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2184 {
2185 struct scsi_qla_host *vha = mcmd->sess->vha;
2186 struct qla_hw_data *ha = vha->hw;
2187 unsigned long flags;
2188 struct qla_qpair *qpair = mcmd->qpair;
2189
2190 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2191 "TM response mcmd (%p) status %#x state %#x",
2192 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2193
2194 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2195
2196 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
2197 /*
2198 * Either the port is not online or this request was from
2199 * previous life, just abort the processing.
2200 */
2201 ql_dbg(ql_dbg_async, vha, 0xe100,
2202 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2203 vha->flags.online, qla2x00_reset_active(vha),
2204 mcmd->reset_count, qpair->chip_reset);
2205 ha->tgt.tgt_ops->free_mcmd(mcmd);
2206 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2207 return;
2208 }
2209
2210 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2211 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2212 ELS_LOGO ||
2213 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2214 ELS_PRLO ||
2215 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2216 ELS_TPRLO) {
2217 ql_dbg(ql_dbg_disc, vha, 0x2106,
2218 "TM response logo %phC status %#x state %#x",
2219 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2220 mcmd->flags);
2221 qlt_schedule_sess_for_deletion(mcmd->sess);
2222 } else {
2223 qlt_send_notify_ack(vha->hw->base_qpair,
2224 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2225 }
2226 } else {
2227 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
2228 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
2229 mcmd->fc_tm_rsp, false);
2230 else
2231 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2232 mcmd->fc_tm_rsp);
2233 }
2234 /*
2235 * Make the callback for ->free_mcmd() to queue_work() and invoke
2236 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2237 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2238 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2239 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2240 * qlt_xmit_tm_rsp() returns here..
2241 */
2242 ha->tgt.tgt_ops->free_mcmd(mcmd);
2243 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2244 }
2245 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2246
2247 /* No locks */
2248 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2249 {
2250 struct qla_tgt_cmd *cmd = prm->cmd;
2251
2252 BUG_ON(cmd->sg_cnt == 0);
2253
2254 prm->sg = (struct scatterlist *)cmd->sg;
2255 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg,
2256 cmd->sg_cnt, cmd->dma_data_direction);
2257 if (unlikely(prm->seg_cnt == 0))
2258 goto out_err;
2259
2260 prm->cmd->sg_mapped = 1;
2261
2262 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2263 /*
2264 * If greater than four sg entries then we need to allocate
2265 * the continuation entries
2266 */
2267 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
2268 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2269 QLA_TGT_DATASEGS_PER_CMD_24XX,
2270 QLA_TGT_DATASEGS_PER_CONT_24XX);
2271 } else {
2272 /* DIF */
2273 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2274 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2275 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2276 prm->tot_dsds = prm->seg_cnt;
2277 } else
2278 prm->tot_dsds = prm->seg_cnt;
2279
2280 if (cmd->prot_sg_cnt) {
2281 prm->prot_sg = cmd->prot_sg;
2282 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev,
2283 cmd->prot_sg, cmd->prot_sg_cnt,
2284 cmd->dma_data_direction);
2285 if (unlikely(prm->prot_seg_cnt == 0))
2286 goto out_err;
2287
2288 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2289 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2290 /* Dif Bundling not support here */
2291 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2292 cmd->blk_sz);
2293 prm->tot_dsds += prm->prot_seg_cnt;
2294 } else
2295 prm->tot_dsds += prm->prot_seg_cnt;
2296 }
2297 }
2298
2299 return 0;
2300
2301 out_err:
2302 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2303 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2304 0, prm->cmd->sg_cnt);
2305 return -1;
2306 }
2307
2308 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2309 {
2310 struct qla_hw_data *ha;
2311 struct qla_qpair *qpair;
2312 if (!cmd->sg_mapped)
2313 return;
2314
2315 qpair = cmd->qpair;
2316
2317 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt,
2318 cmd->dma_data_direction);
2319 cmd->sg_mapped = 0;
2320
2321 if (cmd->prot_sg_cnt)
2322 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
2323 cmd->dma_data_direction);
2324
2325 if (!cmd->ctx)
2326 return;
2327 ha = vha->hw;
2328 if (cmd->ctx_dsd_alloced)
2329 qla2x00_clean_dsd_pool(ha, cmd->ctx);
2330
2331 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2332 }
2333
2334 static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2335 uint32_t req_cnt)
2336 {
2337 uint32_t cnt;
2338 struct req_que *req = qpair->req;
2339
2340 if (req->cnt < (req_cnt + 2)) {
2341 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2342 RD_REG_DWORD_RELAXED(req->req_q_out));
2343
2344 if (req->ring_index < cnt)
2345 req->cnt = cnt - req->ring_index;
2346 else
2347 req->cnt = req->length - (req->ring_index - cnt);
2348
2349 if (unlikely(req->cnt < (req_cnt + 2)))
2350 return -EAGAIN;
2351 }
2352
2353 req->cnt -= req_cnt;
2354
2355 return 0;
2356 }
2357
2358 /*
2359 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2360 */
2361 static inline void *qlt_get_req_pkt(struct req_que *req)
2362 {
2363 /* Adjust ring index. */
2364 req->ring_index++;
2365 if (req->ring_index == req->length) {
2366 req->ring_index = 0;
2367 req->ring_ptr = req->ring;
2368 } else {
2369 req->ring_ptr++;
2370 }
2371 return (cont_entry_t *)req->ring_ptr;
2372 }
2373
2374 /* ha->hardware_lock supposed to be held on entry */
2375 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2376 {
2377 uint32_t h;
2378 int index;
2379 uint8_t found = 0;
2380 struct req_que *req = qpair->req;
2381
2382 h = req->current_outstanding_cmd;
2383
2384 for (index = 1; index < req->num_outstanding_cmds; index++) {
2385 h++;
2386 if (h == req->num_outstanding_cmds)
2387 h = 1;
2388
2389 if (h == QLA_TGT_SKIP_HANDLE)
2390 continue;
2391
2392 if (!req->outstanding_cmds[h]) {
2393 found = 1;
2394 break;
2395 }
2396 }
2397
2398 if (found) {
2399 req->current_outstanding_cmd = h;
2400 } else {
2401 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2402 "qla_target(%d): Ran out of empty cmd slots\n",
2403 qpair->vha->vp_idx);
2404 h = QLA_TGT_NULL_HANDLE;
2405 }
2406
2407 return h;
2408 }
2409
2410 /* ha->hardware_lock supposed to be held on entry */
2411 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2412 struct qla_tgt_prm *prm)
2413 {
2414 uint32_t h;
2415 struct ctio7_to_24xx *pkt;
2416 struct atio_from_isp *atio = &prm->cmd->atio;
2417 uint16_t temp;
2418
2419 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2420 prm->pkt = pkt;
2421 memset(pkt, 0, sizeof(*pkt));
2422
2423 pkt->entry_type = CTIO_TYPE7;
2424 pkt->entry_count = (uint8_t)prm->req_cnt;
2425 pkt->vp_index = prm->cmd->vp_idx;
2426
2427 h = qlt_make_handle(qpair);
2428 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2429 /*
2430 * CTIO type 7 from the firmware doesn't provide a way to
2431 * know the initiator's LOOP ID, hence we can't find
2432 * the session and, so, the command.
2433 */
2434 return -EAGAIN;
2435 } else
2436 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2437
2438 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2439 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2440 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2441 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2442 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2443 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2444 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2445 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2446 temp = atio->u.isp24.attr << 9;
2447 pkt->u.status0.flags |= cpu_to_le16(temp);
2448 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2449 pkt->u.status0.ox_id = cpu_to_le16(temp);
2450 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2451
2452 return 0;
2453 }
2454
2455 /*
2456 * ha->hardware_lock supposed to be held on entry. We have already made sure
2457 * that there is sufficient amount of request entries to not drop it.
2458 */
2459 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2460 {
2461 int cnt;
2462 uint32_t *dword_ptr;
2463
2464 /* Build continuation packets */
2465 while (prm->seg_cnt > 0) {
2466 cont_a64_entry_t *cont_pkt64 =
2467 (cont_a64_entry_t *)qlt_get_req_pkt(
2468 prm->cmd->qpair->req);
2469
2470 /*
2471 * Make sure that from cont_pkt64 none of
2472 * 64-bit specific fields used for 32-bit
2473 * addressing. Cast to (cont_entry_t *) for
2474 * that.
2475 */
2476
2477 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2478
2479 cont_pkt64->entry_count = 1;
2480 cont_pkt64->sys_define = 0;
2481
2482 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2483 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2484
2485 /* Load continuation entry data segments */
2486 for (cnt = 0;
2487 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2488 cnt++, prm->seg_cnt--) {
2489 *dword_ptr++ =
2490 cpu_to_le32(pci_dma_lo32
2491 (sg_dma_address(prm->sg)));
2492 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2493 (sg_dma_address(prm->sg)));
2494 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2495
2496 prm->sg = sg_next(prm->sg);
2497 }
2498 }
2499 }
2500
2501 /*
2502 * ha->hardware_lock supposed to be held on entry. We have already made sure
2503 * that there is sufficient amount of request entries to not drop it.
2504 */
2505 static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2506 {
2507 int cnt;
2508 uint32_t *dword_ptr;
2509 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2510
2511 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2512
2513 /* Setup packet address segment pointer */
2514 dword_ptr = pkt24->u.status0.dseg_0_address;
2515
2516 /* Set total data segment count */
2517 if (prm->seg_cnt)
2518 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2519
2520 if (prm->seg_cnt == 0) {
2521 /* No data transfer */
2522 *dword_ptr++ = 0;
2523 *dword_ptr = 0;
2524 return;
2525 }
2526
2527 /* If scatter gather */
2528
2529 /* Load command entry data segments */
2530 for (cnt = 0;
2531 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2532 cnt++, prm->seg_cnt--) {
2533 *dword_ptr++ =
2534 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2535
2536 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2537 sg_dma_address(prm->sg)));
2538
2539 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2540
2541 prm->sg = sg_next(prm->sg);
2542 }
2543
2544 qlt_load_cont_data_segments(prm);
2545 }
2546
2547 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2548 {
2549 return cmd->bufflen > 0;
2550 }
2551
2552 static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2553 {
2554 struct qla_tgt_cmd *cmd;
2555 struct scsi_qla_host *vha;
2556
2557 /* asc 0x10=dif error */
2558 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2559 cmd = prm->cmd;
2560 vha = cmd->vha;
2561 /* ASCQ */
2562 switch (prm->sense_buffer[13]) {
2563 case 1:
2564 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
2565 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2566 "se_cmd=%p tag[%x]",
2567 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2568 cmd->atio.u.isp24.exchange_addr);
2569 break;
2570 case 2:
2571 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
2572 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2573 "se_cmd=%p tag[%x]",
2574 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2575 cmd->atio.u.isp24.exchange_addr);
2576 break;
2577 case 3:
2578 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
2579 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2580 "se_cmd=%p tag[%x]",
2581 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2582 cmd->atio.u.isp24.exchange_addr);
2583 break;
2584 default:
2585 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
2586 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2587 "se_cmd=%p tag[%x]",
2588 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2589 cmd->atio.u.isp24.exchange_addr);
2590 break;
2591 }
2592 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
2593 }
2594 }
2595
2596 /*
2597 * Called without ha->hardware_lock held
2598 */
2599 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2600 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2601 uint32_t *full_req_cnt)
2602 {
2603 struct se_cmd *se_cmd = &cmd->se_cmd;
2604 struct qla_qpair *qpair = cmd->qpair;
2605
2606 prm->cmd = cmd;
2607 prm->tgt = cmd->tgt;
2608 prm->pkt = NULL;
2609 prm->rq_result = scsi_status;
2610 prm->sense_buffer = &cmd->sense_buffer[0];
2611 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2612 prm->sg = NULL;
2613 prm->seg_cnt = -1;
2614 prm->req_cnt = 1;
2615 prm->residual = 0;
2616 prm->add_status_pkt = 0;
2617 prm->prot_sg = NULL;
2618 prm->prot_seg_cnt = 0;
2619 prm->tot_dsds = 0;
2620
2621 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2622 if (qlt_pci_map_calc_cnt(prm) != 0)
2623 return -EAGAIN;
2624 }
2625
2626 *full_req_cnt = prm->req_cnt;
2627
2628 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2629 prm->residual = se_cmd->residual_count;
2630 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
2631 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2632 prm->residual, se_cmd->tag,
2633 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2634 cmd->bufflen, prm->rq_result);
2635 prm->rq_result |= SS_RESIDUAL_UNDER;
2636 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2637 prm->residual = se_cmd->residual_count;
2638 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
2639 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2640 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2641 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2642 prm->rq_result |= SS_RESIDUAL_OVER;
2643 }
2644
2645 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2646 /*
2647 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2648 * ignored in *xmit_response() below
2649 */
2650 if (qlt_has_data(cmd)) {
2651 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2652 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2653 (prm->rq_result != 0))) {
2654 prm->add_status_pkt = 1;
2655 (*full_req_cnt)++;
2656 }
2657 }
2658 }
2659
2660 return 0;
2661 }
2662
2663 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2664 int sending_sense)
2665 {
2666 if (cmd->qpair->enable_class_2)
2667 return 0;
2668
2669 if (sending_sense)
2670 return cmd->conf_compl_supported;
2671 else
2672 return cmd->qpair->enable_explicit_conf &&
2673 cmd->conf_compl_supported;
2674 }
2675
2676 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2677 struct qla_tgt_prm *prm)
2678 {
2679 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2680 (uint32_t)sizeof(ctio->u.status1.sense_data));
2681 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2682 if (qlt_need_explicit_conf(prm->cmd, 0)) {
2683 ctio->u.status0.flags |= cpu_to_le16(
2684 CTIO7_FLAGS_EXPLICIT_CONFORM |
2685 CTIO7_FLAGS_CONFORM_REQ);
2686 }
2687 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2688 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2689 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2690 int i;
2691
2692 if (qlt_need_explicit_conf(prm->cmd, 1)) {
2693 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2694 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2695 "Skipping EXPLICIT_CONFORM and "
2696 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2697 "non GOOD status\n");
2698 goto skip_explict_conf;
2699 }
2700 ctio->u.status1.flags |= cpu_to_le16(
2701 CTIO7_FLAGS_EXPLICIT_CONFORM |
2702 CTIO7_FLAGS_CONFORM_REQ);
2703 }
2704 skip_explict_conf:
2705 ctio->u.status1.flags &=
2706 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2707 ctio->u.status1.flags |=
2708 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2709 ctio->u.status1.scsi_status |=
2710 cpu_to_le16(SS_SENSE_LEN_VALID);
2711 ctio->u.status1.sense_length =
2712 cpu_to_le16(prm->sense_buffer_len);
2713 for (i = 0; i < prm->sense_buffer_len/4; i++)
2714 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2715 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2716
2717 qlt_print_dif_err(prm);
2718
2719 } else {
2720 ctio->u.status1.flags &=
2721 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2722 ctio->u.status1.flags |=
2723 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2724 ctio->u.status1.sense_length = 0;
2725 memset(ctio->u.status1.sense_data, 0,
2726 sizeof(ctio->u.status1.sense_data));
2727 }
2728
2729 /* Sense with len > 24, is it possible ??? */
2730 }
2731
2732 static inline int
2733 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2734 {
2735 switch (se_cmd->prot_op) {
2736 case TARGET_PROT_DOUT_INSERT:
2737 case TARGET_PROT_DIN_STRIP:
2738 if (ql2xenablehba_err_chk >= 1)
2739 return 1;
2740 break;
2741 case TARGET_PROT_DOUT_PASS:
2742 case TARGET_PROT_DIN_PASS:
2743 if (ql2xenablehba_err_chk >= 2)
2744 return 1;
2745 break;
2746 case TARGET_PROT_DIN_INSERT:
2747 case TARGET_PROT_DOUT_STRIP:
2748 return 1;
2749 default:
2750 break;
2751 }
2752 return 0;
2753 }
2754
2755 static inline int
2756 qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2757 {
2758 switch (se_cmd->prot_op) {
2759 case TARGET_PROT_DIN_INSERT:
2760 case TARGET_PROT_DOUT_INSERT:
2761 case TARGET_PROT_DIN_STRIP:
2762 case TARGET_PROT_DOUT_STRIP:
2763 case TARGET_PROT_DIN_PASS:
2764 case TARGET_PROT_DOUT_PASS:
2765 return 1;
2766 default:
2767 return 0;
2768 }
2769 return 0;
2770 }
2771
2772 /*
2773 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
2774 */
2775 static void
2776 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2777 uint16_t *pfw_prot_opts)
2778 {
2779 struct se_cmd *se_cmd = &cmd->se_cmd;
2780 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2781 scsi_qla_host_t *vha = cmd->tgt->vha;
2782 struct qla_hw_data *ha = vha->hw;
2783 uint32_t t32 = 0;
2784
2785 /*
2786 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
2787 * have been immplemented by TCM, before AppTag is avail.
2788 * Look for modesense_handlers[]
2789 */
2790 ctx->app_tag = 0;
2791 ctx->app_tag_mask[0] = 0x0;
2792 ctx->app_tag_mask[1] = 0x0;
2793
2794 if (IS_PI_UNINIT_CAPABLE(ha)) {
2795 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2796 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2797 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2798 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2799 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2800 }
2801
2802 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2803
2804 switch (se_cmd->prot_type) {
2805 case TARGET_DIF_TYPE0_PROT:
2806 /*
2807 * No check for ql2xenablehba_err_chk, as it
2808 * would be an I/O error if hba tag generation
2809 * is not done.
2810 */
2811 ctx->ref_tag = cpu_to_le32(lba);
2812 /* enable ALL bytes of the ref tag */
2813 ctx->ref_tag_mask[0] = 0xff;
2814 ctx->ref_tag_mask[1] = 0xff;
2815 ctx->ref_tag_mask[2] = 0xff;
2816 ctx->ref_tag_mask[3] = 0xff;
2817 break;
2818 case TARGET_DIF_TYPE1_PROT:
2819 /*
2820 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2821 * REF tag, and 16 bit app tag.
2822 */
2823 ctx->ref_tag = cpu_to_le32(lba);
2824 if (!qla_tgt_ref_mask_check(se_cmd) ||
2825 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2826 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2827 break;
2828 }
2829 /* enable ALL bytes of the ref tag */
2830 ctx->ref_tag_mask[0] = 0xff;
2831 ctx->ref_tag_mask[1] = 0xff;
2832 ctx->ref_tag_mask[2] = 0xff;
2833 ctx->ref_tag_mask[3] = 0xff;
2834 break;
2835 case TARGET_DIF_TYPE2_PROT:
2836 /*
2837 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2838 * tag has to match LBA in CDB + N
2839 */
2840 ctx->ref_tag = cpu_to_le32(lba);
2841 if (!qla_tgt_ref_mask_check(se_cmd) ||
2842 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2843 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2844 break;
2845 }
2846 /* enable ALL bytes of the ref tag */
2847 ctx->ref_tag_mask[0] = 0xff;
2848 ctx->ref_tag_mask[1] = 0xff;
2849 ctx->ref_tag_mask[2] = 0xff;
2850 ctx->ref_tag_mask[3] = 0xff;
2851 break;
2852 case TARGET_DIF_TYPE3_PROT:
2853 /* For TYPE 3 protection: 16 bit GUARD only */
2854 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2855 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2856 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2857 break;
2858 }
2859 }
2860
2861 static inline int
2862 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
2863 {
2864 uint32_t *cur_dsd;
2865 uint32_t transfer_length = 0;
2866 uint32_t data_bytes;
2867 uint32_t dif_bytes;
2868 uint8_t bundling = 1;
2869 uint8_t *clr_ptr;
2870 struct crc_context *crc_ctx_pkt = NULL;
2871 struct qla_hw_data *ha;
2872 struct ctio_crc2_to_fw *pkt;
2873 dma_addr_t crc_ctx_dma;
2874 uint16_t fw_prot_opts = 0;
2875 struct qla_tgt_cmd *cmd = prm->cmd;
2876 struct se_cmd *se_cmd = &cmd->se_cmd;
2877 uint32_t h;
2878 struct atio_from_isp *atio = &prm->cmd->atio;
2879 struct qla_tc_param tc;
2880 uint16_t t16;
2881 scsi_qla_host_t *vha = cmd->vha;
2882
2883 ha = vha->hw;
2884
2885 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
2886 prm->pkt = pkt;
2887 memset(pkt, 0, sizeof(*pkt));
2888
2889 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
2890 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2891 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2892 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2893
2894 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2895 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2896 bundling = 0;
2897
2898 /* Compute dif len and adjust data len to incude protection */
2899 data_bytes = cmd->bufflen;
2900 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2901
2902 switch (se_cmd->prot_op) {
2903 case TARGET_PROT_DIN_INSERT:
2904 case TARGET_PROT_DOUT_STRIP:
2905 transfer_length = data_bytes;
2906 if (cmd->prot_sg_cnt)
2907 data_bytes += dif_bytes;
2908 break;
2909 case TARGET_PROT_DIN_STRIP:
2910 case TARGET_PROT_DOUT_INSERT:
2911 case TARGET_PROT_DIN_PASS:
2912 case TARGET_PROT_DOUT_PASS:
2913 transfer_length = data_bytes + dif_bytes;
2914 break;
2915 default:
2916 BUG();
2917 break;
2918 }
2919
2920 if (!qlt_hba_err_chk_enabled(se_cmd))
2921 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2922 /* HBA error checking enabled */
2923 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2924 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2925 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2926 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2927 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2928 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2929 }
2930
2931 switch (se_cmd->prot_op) {
2932 case TARGET_PROT_DIN_INSERT:
2933 case TARGET_PROT_DOUT_INSERT:
2934 fw_prot_opts |= PO_MODE_DIF_INSERT;
2935 break;
2936 case TARGET_PROT_DIN_STRIP:
2937 case TARGET_PROT_DOUT_STRIP:
2938 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2939 break;
2940 case TARGET_PROT_DIN_PASS:
2941 case TARGET_PROT_DOUT_PASS:
2942 fw_prot_opts |= PO_MODE_DIF_PASS;
2943 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2944 break;
2945 default:/* Normal Request */
2946 fw_prot_opts |= PO_MODE_DIF_PASS;
2947 break;
2948 }
2949
2950 /* ---- PKT ---- */
2951 /* Update entry type to indicate Command Type CRC_2 IOCB */
2952 pkt->entry_type = CTIO_CRC2;
2953 pkt->entry_count = 1;
2954 pkt->vp_index = cmd->vp_idx;
2955
2956 h = qlt_make_handle(qpair);
2957 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2958 /*
2959 * CTIO type 7 from the firmware doesn't provide a way to
2960 * know the initiator's LOOP ID, hence we can't find
2961 * the session and, so, the command.
2962 */
2963 return -EAGAIN;
2964 } else
2965 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2966
2967 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2968 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2969 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2970 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2971 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2972 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2973 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2974 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2975
2976 /* silence compile warning */
2977 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2978 pkt->ox_id = cpu_to_le16(t16);
2979
2980 t16 = (atio->u.isp24.attr << 9);
2981 pkt->flags |= cpu_to_le16(t16);
2982 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2983
2984 /* Set transfer direction */
2985 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2986 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2987 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2988 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2989
2990 pkt->dseg_count = prm->tot_dsds;
2991 /* Fibre channel byte count */
2992 pkt->transfer_length = cpu_to_le32(transfer_length);
2993
2994 /* ----- CRC context -------- */
2995
2996 /* Allocate CRC context from global pool */
2997 crc_ctx_pkt = cmd->ctx =
2998 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2999
3000 if (!crc_ctx_pkt)
3001 goto crc_queuing_error;
3002
3003 /* Zero out CTX area. */
3004 clr_ptr = (uint8_t *)crc_ctx_pkt;
3005 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
3006
3007 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3008 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3009
3010 /* Set handle */
3011 crc_ctx_pkt->handle = pkt->handle;
3012
3013 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
3014
3015 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
3016 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
3017 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
3018
3019 if (!bundling) {
3020 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
3021 } else {
3022 /*
3023 * Configure Bundling if we need to fetch interlaving
3024 * protection PCI accesses
3025 */
3026 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3027 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3028 crc_ctx_pkt->u.bundling.dseg_count =
3029 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3030 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
3031 }
3032
3033 /* Finish the common fields of CRC pkt */
3034 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3035 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3036 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
3037 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
3038
3039 memset((uint8_t *)&tc, 0 , sizeof(tc));
3040 tc.vha = vha;
3041 tc.blk_sz = cmd->blk_sz;
3042 tc.bufflen = cmd->bufflen;
3043 tc.sg = cmd->sg;
3044 tc.prot_sg = cmd->prot_sg;
3045 tc.ctx = crc_ctx_pkt;
3046 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
3047
3048 /* Walks data segments */
3049 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
3050
3051 if (!bundling && prm->prot_seg_cnt) {
3052 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
3053 prm->tot_dsds, &tc))
3054 goto crc_queuing_error;
3055 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
3056 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
3057 goto crc_queuing_error;
3058
3059 if (bundling && prm->prot_seg_cnt) {
3060 /* Walks dif segments */
3061 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
3062
3063 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3064 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
3065 prm->prot_seg_cnt, &tc))
3066 goto crc_queuing_error;
3067 }
3068 return QLA_SUCCESS;
3069
3070 crc_queuing_error:
3071 /* Cleanup will be performed by the caller */
3072 qpair->req->outstanding_cmds[h] = NULL;
3073
3074 return QLA_FUNCTION_FAILED;
3075 }
3076
3077 /*
3078 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3079 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3080 */
3081 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3082 uint8_t scsi_status)
3083 {
3084 struct scsi_qla_host *vha = cmd->vha;
3085 struct qla_qpair *qpair = cmd->qpair;
3086 struct ctio7_to_24xx *pkt;
3087 struct qla_tgt_prm prm;
3088 uint32_t full_req_cnt = 0;
3089 unsigned long flags = 0;
3090 int res;
3091
3092 if (cmd->sess && cmd->sess->deleted) {
3093 cmd->state = QLA_TGT_STATE_PROCESSED;
3094 if (cmd->sess->logout_completed)
3095 /* no need to terminate. FW already freed exchange. */
3096 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3097 else
3098 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
3099 return 0;
3100 }
3101
3102 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
3103 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
3104 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3105 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3106 &cmd->se_cmd, qpair->id);
3107
3108 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3109 &full_req_cnt);
3110 if (unlikely(res != 0)) {
3111 return res;
3112 }
3113
3114 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3115
3116 if (xmit_type == QLA_TGT_XMIT_STATUS)
3117 qpair->tgt_counters.core_qla_snd_status++;
3118 else
3119 qpair->tgt_counters.core_qla_que_buf++;
3120
3121 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
3122 /*
3123 * Either the port is not online or this request was from
3124 * previous life, just abort the processing.
3125 */
3126 cmd->state = QLA_TGT_STATE_PROCESSED;
3127 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3128 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3129 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3130 vha->flags.online, qla2x00_reset_active(vha),
3131 cmd->reset_count, qpair->chip_reset);
3132 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3133 return 0;
3134 }
3135
3136 /* Does F/W have an IOCBs for this request */
3137 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
3138 if (unlikely(res))
3139 goto out_unmap_unlock;
3140
3141 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3142 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3143 else
3144 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3145 if (unlikely(res != 0)) {
3146 qpair->req->cnt += full_req_cnt;
3147 goto out_unmap_unlock;
3148 }
3149
3150 pkt = (struct ctio7_to_24xx *)prm.pkt;
3151
3152 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3153 pkt->u.status0.flags |=
3154 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
3155 CTIO7_FLAGS_STATUS_MODE_0);
3156
3157 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3158 qlt_load_data_segments(&prm);
3159
3160 if (prm.add_status_pkt == 0) {
3161 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3162 pkt->u.status0.scsi_status =
3163 cpu_to_le16(prm.rq_result);
3164 pkt->u.status0.residual =
3165 cpu_to_le32(prm.residual);
3166 pkt->u.status0.flags |= cpu_to_le16(
3167 CTIO7_FLAGS_SEND_STATUS);
3168 if (qlt_need_explicit_conf(cmd, 0)) {
3169 pkt->u.status0.flags |=
3170 cpu_to_le16(
3171 CTIO7_FLAGS_EXPLICIT_CONFORM |
3172 CTIO7_FLAGS_CONFORM_REQ);
3173 }
3174 }
3175
3176 } else {
3177 /*
3178 * We have already made sure that there is sufficient
3179 * amount of request entries to not drop HW lock in
3180 * req_pkt().
3181 */
3182 struct ctio7_to_24xx *ctio =
3183 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3184 qpair->req);
3185
3186 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
3187 "Building additional status packet 0x%p.\n",
3188 ctio);
3189
3190 /*
3191 * T10Dif: ctio_crc2_to_fw overlay ontop of
3192 * ctio7_to_24xx
3193 */
3194 memcpy(ctio, pkt, sizeof(*ctio));
3195 /* reset back to CTIO7 */
3196 ctio->entry_count = 1;
3197 ctio->entry_type = CTIO_TYPE7;
3198 ctio->dseg_count = 0;
3199 ctio->u.status1.flags &= ~cpu_to_le16(
3200 CTIO7_FLAGS_DATA_IN);
3201
3202 /* Real finish is ctio_m1's finish */
3203 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
3204 pkt->u.status0.flags |= cpu_to_le16(
3205 CTIO7_FLAGS_DONT_RET_CTIO);
3206
3207 /* qlt_24xx_init_ctio_to_isp will correct
3208 * all neccessary fields that's part of CTIO7.
3209 * There should be no residual of CTIO-CRC2 data.
3210 */
3211 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3212 &prm);
3213 }
3214 } else
3215 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3216
3217
3218 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
3219 cmd->cmd_sent_to_fw = 1;
3220
3221 /* Memory Barrier */
3222 wmb();
3223 if (qpair->reqq_start_iocbs)
3224 qpair->reqq_start_iocbs(qpair);
3225 else
3226 qla2x00_start_iocbs(vha, qpair->req);
3227 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3228
3229 return 0;
3230
3231 out_unmap_unlock:
3232 qlt_unmap_sg(vha, cmd);
3233 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3234
3235 return res;
3236 }
3237 EXPORT_SYMBOL(qlt_xmit_response);
3238
3239 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3240 {
3241 struct ctio7_to_24xx *pkt;
3242 struct scsi_qla_host *vha = cmd->vha;
3243 struct qla_tgt *tgt = cmd->tgt;
3244 struct qla_tgt_prm prm;
3245 unsigned long flags = 0;
3246 int res = 0;
3247 struct qla_qpair *qpair = cmd->qpair;
3248
3249 memset(&prm, 0, sizeof(prm));
3250 prm.cmd = cmd;
3251 prm.tgt = tgt;
3252 prm.sg = NULL;
3253 prm.req_cnt = 1;
3254
3255 /* Calculate number of entries and segments required */
3256 if (qlt_pci_map_calc_cnt(&prm) != 0)
3257 return -EAGAIN;
3258
3259 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3260 (cmd->sess && cmd->sess->deleted)) {
3261 /*
3262 * Either the port is not online or this request was from
3263 * previous life, just abort the processing.
3264 */
3265 cmd->state = QLA_TGT_STATE_NEED_DATA;
3266 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3267 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3268 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3269 vha->flags.online, qla2x00_reset_active(vha),
3270 cmd->reset_count, qpair->chip_reset);
3271 return 0;
3272 }
3273
3274 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3275 /* Does F/W have an IOCBs for this request */
3276 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
3277 if (res != 0)
3278 goto out_unlock_free_unmap;
3279 if (cmd->se_cmd.prot_op)
3280 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3281 else
3282 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3283
3284 if (unlikely(res != 0)) {
3285 qpair->req->cnt += prm.req_cnt;
3286 goto out_unlock_free_unmap;
3287 }
3288
3289 pkt = (struct ctio7_to_24xx *)prm.pkt;
3290 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
3291 CTIO7_FLAGS_STATUS_MODE_0);
3292
3293 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3294 qlt_load_data_segments(&prm);
3295
3296 cmd->state = QLA_TGT_STATE_NEED_DATA;
3297 cmd->cmd_sent_to_fw = 1;
3298
3299 /* Memory Barrier */
3300 wmb();
3301 if (qpair->reqq_start_iocbs)
3302 qpair->reqq_start_iocbs(qpair);
3303 else
3304 qla2x00_start_iocbs(vha, qpair->req);
3305 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3306
3307 return res;
3308
3309 out_unlock_free_unmap:
3310 qlt_unmap_sg(vha, cmd);
3311 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3312
3313 return res;
3314 }
3315 EXPORT_SYMBOL(qlt_rdy_to_xfer);
3316
3317
3318 /*
3319 * it is assumed either hardware_lock or qpair lock is held.
3320 */
3321 static void
3322 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
3323 struct ctio_crc_from_fw *sts)
3324 {
3325 uint8_t *ap = &sts->actual_dif[0];
3326 uint8_t *ep = &sts->expected_dif[0];
3327 uint64_t lba = cmd->se_cmd.t_task_lba;
3328 uint8_t scsi_status, sense_key, asc, ascq;
3329 unsigned long flags;
3330 struct scsi_qla_host *vha = cmd->vha;
3331
3332 cmd->trc_flags |= TRC_DIF_ERR;
3333
3334 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3335 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3336 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
3337
3338 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3339 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3340 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
3341
3342 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3343 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
3344
3345 scsi_status = sense_key = asc = ascq = 0;
3346
3347 /* check appl tag */
3348 if (cmd->e_app_tag != cmd->a_app_tag) {
3349 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3350 "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]",
3351 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3352 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3353 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3354 cmd->atio.u.isp24.fcp_hdr.ox_id);
3355
3356 cmd->dif_err_code = DIF_ERR_APP;
3357 scsi_status = SAM_STAT_CHECK_CONDITION;
3358 sense_key = ABORTED_COMMAND;
3359 asc = 0x10;
3360 ascq = 0x2;
3361 }
3362
3363 /* check ref tag */
3364 if (cmd->e_ref_tag != cmd->a_ref_tag) {
3365 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3366 "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] ",
3367 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3368 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3369 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3370 cmd->atio.u.isp24.fcp_hdr.ox_id);
3371
3372 cmd->dif_err_code = DIF_ERR_REF;
3373 scsi_status = SAM_STAT_CHECK_CONDITION;
3374 sense_key = ABORTED_COMMAND;
3375 asc = 0x10;
3376 ascq = 0x3;
3377 goto out;
3378 }
3379
3380 /* check guard */
3381 if (cmd->e_guard != cmd->a_guard) {
3382 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3383 "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]",
3384 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3385 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3386 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3387 cmd->atio.u.isp24.fcp_hdr.ox_id);
3388
3389 cmd->dif_err_code = DIF_ERR_GRD;
3390 scsi_status = SAM_STAT_CHECK_CONDITION;
3391 sense_key = ABORTED_COMMAND;
3392 asc = 0x10;
3393 ascq = 0x1;
3394 }
3395 out:
3396 switch (cmd->state) {
3397 case QLA_TGT_STATE_NEED_DATA:
3398 /* handle_data will load DIF error code */
3399 cmd->state = QLA_TGT_STATE_DATA_IN;
3400 vha->hw->tgt.tgt_ops->handle_data(cmd);
3401 break;
3402 default:
3403 spin_lock_irqsave(&cmd->cmd_lock, flags);
3404 if (cmd->aborted) {
3405 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3406 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3407 break;
3408 }
3409 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3410
3411 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3412 ascq);
3413 /* assume scsi status gets out on the wire.
3414 * Will not wait for completion.
3415 */
3416 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3417 break;
3418 }
3419 }
3420
3421 /* If hardware_lock held on entry, might drop it, then reaquire */
3422 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3423 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3424 struct imm_ntfy_from_isp *ntfy)
3425 {
3426 struct nack_to_isp *nack;
3427 struct qla_hw_data *ha = vha->hw;
3428 request_t *pkt;
3429 int ret = 0;
3430
3431 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3432 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3433
3434 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3435 if (pkt == NULL) {
3436 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3437 "qla_target(%d): %s failed: unable to allocate "
3438 "request packet\n", vha->vp_idx, __func__);
3439 return -ENOMEM;
3440 }
3441
3442 pkt->entry_type = NOTIFY_ACK_TYPE;
3443 pkt->entry_count = 1;
3444 pkt->handle = QLA_TGT_SKIP_HANDLE;
3445
3446 nack = (struct nack_to_isp *)pkt;
3447 nack->ox_id = ntfy->ox_id;
3448
3449 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3450 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3451 nack->u.isp24.flags = ntfy->u.isp24.flags &
3452 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3453 }
3454
3455 /* terminate */
3456 nack->u.isp24.flags |=
3457 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3458
3459 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3460 nack->u.isp24.status = ntfy->u.isp24.status;
3461 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3462 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3463 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3464 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3465 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3466 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3467
3468 qla2x00_start_iocbs(vha, vha->req);
3469 return ret;
3470 }
3471
3472 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3473 struct imm_ntfy_from_isp *imm, int ha_locked)
3474 {
3475 unsigned long flags = 0;
3476 int rc;
3477
3478 if (ha_locked) {
3479 rc = __qlt_send_term_imm_notif(vha, imm);
3480
3481 #if 0 /* Todo */
3482 if (rc == -ENOMEM)
3483 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3484 #else
3485 if (rc) {
3486 }
3487 #endif
3488 goto done;
3489 }
3490
3491 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3492 rc = __qlt_send_term_imm_notif(vha, imm);
3493
3494 #if 0 /* Todo */
3495 if (rc == -ENOMEM)
3496 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3497 #endif
3498
3499 done:
3500 if (!ha_locked)
3501 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3502 }
3503
3504 /*
3505 * If hardware_lock held on entry, might drop it, then reaquire
3506 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3507 */
3508 static int __qlt_send_term_exchange(struct qla_qpair *qpair,
3509 struct qla_tgt_cmd *cmd,
3510 struct atio_from_isp *atio)
3511 {
3512 struct scsi_qla_host *vha = qpair->vha;
3513 struct ctio7_to_24xx *ctio24;
3514 struct qla_hw_data *ha = vha->hw;
3515 request_t *pkt;
3516 int ret = 0;
3517 uint16_t temp;
3518
3519 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3520
3521 if (cmd)
3522 vha = cmd->vha;
3523
3524 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
3525 if (pkt == NULL) {
3526 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3527 "qla_target(%d): %s failed: unable to allocate "
3528 "request packet\n", vha->vp_idx, __func__);
3529 return -ENOMEM;
3530 }
3531
3532 if (cmd != NULL) {
3533 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3534 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3535 "qla_target(%d): Terminating cmd %p with "
3536 "incorrect state %d\n", vha->vp_idx, cmd,
3537 cmd->state);
3538 } else
3539 ret = 1;
3540 }
3541
3542 qpair->tgt_counters.num_term_xchg_sent++;
3543 pkt->entry_count = 1;
3544 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3545
3546 ctio24 = (struct ctio7_to_24xx *)pkt;
3547 ctio24->entry_type = CTIO_TYPE7;
3548 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
3549 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3550 ctio24->vp_index = vha->vp_idx;
3551 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3552 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3553 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3554 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3555 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3556 CTIO7_FLAGS_TERMINATE;
3557 ctio24->u.status1.flags = cpu_to_le16(temp);
3558 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3559 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3560
3561 /* Most likely, it isn't needed */
3562 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3563 &atio->u.isp24.fcp_cmnd.add_cdb[
3564 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3565 if (ctio24->u.status1.residual != 0)
3566 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3567
3568 /* Memory Barrier */
3569 wmb();
3570 if (qpair->reqq_start_iocbs)
3571 qpair->reqq_start_iocbs(qpair);
3572 else
3573 qla2x00_start_iocbs(vha, qpair->req);
3574 return ret;
3575 }
3576
3577 static void qlt_send_term_exchange(struct qla_qpair *qpair,
3578 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3579 int ul_abort)
3580 {
3581 struct scsi_qla_host *vha;
3582 unsigned long flags = 0;
3583 int rc;
3584
3585 /* why use different vha? NPIV */
3586 if (cmd)
3587 vha = cmd->vha;
3588 else
3589 vha = qpair->vha;
3590
3591 if (ha_locked) {
3592 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3593 if (rc == -ENOMEM)
3594 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3595 goto done;
3596 }
3597 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3598 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3599 if (rc == -ENOMEM)
3600 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3601
3602 done:
3603 if (cmd && !ul_abort && !cmd->aborted) {
3604 if (cmd->sg_mapped)
3605 qlt_unmap_sg(vha, cmd);
3606 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3607 }
3608
3609 if (!ha_locked)
3610 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3611
3612 return;
3613 }
3614
3615 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3616 {
3617 struct list_head free_list;
3618 struct qla_tgt_cmd *cmd, *tcmd;
3619
3620 vha->hw->tgt.leak_exchg_thresh_hold =
3621 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3622
3623 cmd = tcmd = NULL;
3624 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3625 INIT_LIST_HEAD(&free_list);
3626 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3627
3628 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3629 list_del(&cmd->cmd_list);
3630 /* This cmd was never sent to TCM. There is no need
3631 * to schedule free or call free_cmd
3632 */
3633 qlt_free_cmd(cmd);
3634 vha->hw->tgt.num_qfull_cmds_alloc--;
3635 }
3636 }
3637 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3638 }
3639
3640 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3641 {
3642 uint32_t total_leaked;
3643
3644 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3645
3646 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3647 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3648
3649 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3650 "Chip reset due to exchange starvation: %d/%d.\n",
3651 total_leaked, vha->hw->cur_fw_xcb_count);
3652
3653 if (IS_P3P_TYPE(vha->hw))
3654 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3655 else
3656 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3657 qla2xxx_wake_dpc(vha);
3658 }
3659
3660 }
3661
3662 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3663 {
3664 struct qla_tgt *tgt = cmd->tgt;
3665 struct scsi_qla_host *vha = tgt->vha;
3666 struct se_cmd *se_cmd = &cmd->se_cmd;
3667 unsigned long flags;
3668
3669 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3670 "qla_target(%d): terminating exchange for aborted cmd=%p "
3671 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3672 se_cmd->tag);
3673
3674 spin_lock_irqsave(&cmd->cmd_lock, flags);
3675 if (cmd->aborted) {
3676 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3677 /*
3678 * It's normal to see 2 calls in this path:
3679 * 1) XFER Rdy completion + CMD_T_ABORT
3680 * 2) TCM TMR - drain_state_list
3681 */
3682 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3683 "multiple abort. %p transport_state %x, t_state %x, "
3684 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3685 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
3686 return EIO;
3687 }
3688 cmd->aborted = 1;
3689 cmd->trc_flags |= TRC_ABORT;
3690 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3691
3692 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
3693 return 0;
3694 }
3695 EXPORT_SYMBOL(qlt_abort_cmd);
3696
3697 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3698 {
3699 struct fc_port *sess = cmd->sess;
3700
3701 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3702 "%s: se_cmd[%p] ox_id %04x\n",
3703 __func__, &cmd->se_cmd,
3704 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3705
3706 BUG_ON(cmd->cmd_in_wq);
3707
3708 if (cmd->sg_mapped)
3709 qlt_unmap_sg(cmd->vha, cmd);
3710
3711 if (!cmd->q_full)
3712 qlt_decr_num_pend_cmds(cmd->vha);
3713
3714 BUG_ON(cmd->sg_mapped);
3715 cmd->jiffies_at_free = get_jiffies_64();
3716 if (unlikely(cmd->free_sg))
3717 kfree(cmd->sg);
3718
3719 if (!sess || !sess->se_sess) {
3720 WARN_ON(1);
3721 return;
3722 }
3723 cmd->jiffies_at_free = get_jiffies_64();
3724 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3725 }
3726 EXPORT_SYMBOL(qlt_free_cmd);
3727
3728 /*
3729 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3730 */
3731 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
3732 struct qla_tgt_cmd *cmd, uint32_t status)
3733 {
3734 int term = 0;
3735 struct scsi_qla_host *vha = qpair->vha;
3736
3737 if (cmd->se_cmd.prot_op)
3738 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
3739 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3740 "se_cmd=%p tag[%x] op %#x/%s",
3741 cmd->lba, cmd->lba,
3742 cmd->num_blks, &cmd->se_cmd,
3743 cmd->atio.u.isp24.exchange_addr,
3744 cmd->se_cmd.prot_op,
3745 prot_op_str(cmd->se_cmd.prot_op));
3746
3747 if (ctio != NULL) {
3748 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3749 term = !(c->flags &
3750 cpu_to_le16(OF_TERM_EXCH));
3751 } else
3752 term = 1;
3753
3754 if (term)
3755 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
3756
3757 return term;
3758 }
3759
3760
3761 /* ha->hardware_lock supposed to be held on entry */
3762 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3763 struct rsp_que *rsp, uint32_t handle, void *ctio)
3764 {
3765 struct qla_tgt_cmd *cmd = NULL;
3766 struct req_que *req;
3767 int qid = GET_QID(handle);
3768 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
3769
3770 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3771 return NULL;
3772
3773 if (qid == rsp->req->id) {
3774 req = rsp->req;
3775 } else if (vha->hw->req_q_map[qid]) {
3776 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3777 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3778 vha->vp_idx, rsp->id, handle);
3779 req = vha->hw->req_q_map[qid];
3780 } else {
3781 return NULL;
3782 }
3783
3784 h &= QLA_CMD_HANDLE_MASK;
3785
3786 if (h != QLA_TGT_NULL_HANDLE) {
3787 if (unlikely(h >= req->num_outstanding_cmds)) {
3788 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3789 "qla_target(%d): Wrong handle %x received\n",
3790 vha->vp_idx, handle);
3791 return NULL;
3792 }
3793
3794 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
3795 if (unlikely(cmd == NULL)) {
3796 ql_dbg(ql_dbg_async, vha, 0xe053,
3797 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3798 vha->vp_idx, handle, req->id, rsp->id);
3799 return NULL;
3800 }
3801 req->outstanding_cmds[h] = NULL;
3802 } else if (ctio != NULL) {
3803 /* We can't get loop ID from CTIO7 */
3804 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3805 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3806 "support NULL handles\n", vha->vp_idx);
3807 return NULL;
3808 }
3809
3810 return cmd;
3811 }
3812
3813 /* hardware_lock should be held by caller. */
3814 void
3815 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3816 {
3817 struct qla_hw_data *ha = vha->hw;
3818
3819 if (cmd->sg_mapped)
3820 qlt_unmap_sg(vha, cmd);
3821
3822 /* TODO: fix debug message type and ids. */
3823 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3824 ql_dbg(ql_dbg_io, vha, 0xff00,
3825 "HOST-ABORT: state=PROCESSED.\n");
3826 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3827 cmd->write_data_transferred = 0;
3828 cmd->state = QLA_TGT_STATE_DATA_IN;
3829
3830 ql_dbg(ql_dbg_io, vha, 0xff01,
3831 "HOST-ABORT: state=DATA_IN.\n");
3832
3833 ha->tgt.tgt_ops->handle_data(cmd);
3834 return;
3835 } else {
3836 ql_dbg(ql_dbg_io, vha, 0xff03,
3837 "HOST-ABORT: state=BAD(%d).\n",
3838 cmd->state);
3839 dump_stack();
3840 }
3841
3842 cmd->trc_flags |= TRC_FLUSH;
3843 ha->tgt.tgt_ops->free_cmd(cmd);
3844 }
3845
3846 /*
3847 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3848 */
3849 static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3850 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
3851 {
3852 struct qla_hw_data *ha = vha->hw;
3853 struct se_cmd *se_cmd;
3854 struct qla_tgt_cmd *cmd;
3855 struct qla_qpair *qpair = rsp->qpair;
3856
3857 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3858 /* That could happen only in case of an error/reset/abort */
3859 if (status != CTIO_SUCCESS) {
3860 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3861 "Intermediate CTIO received"
3862 " (status %x)\n", status);
3863 }
3864 return;
3865 }
3866
3867 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
3868 if (cmd == NULL)
3869 return;
3870
3871 se_cmd = &cmd->se_cmd;
3872 cmd->cmd_sent_to_fw = 0;
3873
3874 qlt_unmap_sg(vha, cmd);
3875
3876 if (unlikely(status != CTIO_SUCCESS)) {
3877 switch (status & 0xFFFF) {
3878 case CTIO_LIP_RESET:
3879 case CTIO_TARGET_RESET:
3880 case CTIO_ABORTED:
3881 /* driver request abort via Terminate exchange */
3882 case CTIO_TIMEOUT:
3883 case CTIO_INVALID_RX_ID:
3884 /* They are OK */
3885 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3886 "qla_target(%d): CTIO with "
3887 "status %#x received, state %x, se_cmd %p, "
3888 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3889 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3890 status, cmd->state, se_cmd);
3891 break;
3892
3893 case CTIO_PORT_LOGGED_OUT:
3894 case CTIO_PORT_UNAVAILABLE:
3895 {
3896 int logged_out =
3897 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3898
3899 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3900 "qla_target(%d): CTIO with %s status %x "
3901 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3902 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
3903 status, cmd->state, se_cmd);
3904
3905 if (logged_out && cmd->sess) {
3906 /*
3907 * Session is already logged out, but we need
3908 * to notify initiator, who's not aware of this
3909 */
3910 cmd->sess->logout_on_delete = 0;
3911 cmd->sess->send_els_logo = 1;
3912 ql_dbg(ql_dbg_disc, vha, 0x20f8,
3913 "%s %d %8phC post del sess\n",
3914 __func__, __LINE__, cmd->sess->port_name);
3915
3916 qlt_schedule_sess_for_deletion(cmd->sess);
3917 }
3918 break;
3919 }
3920 case CTIO_DIF_ERROR: {
3921 struct ctio_crc_from_fw *crc =
3922 (struct ctio_crc_from_fw *)ctio;
3923 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3924 "qla_target(%d): CTIO with DIF_ERROR status %x "
3925 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3926 "expect_dif[0x%llx]\n",
3927 vha->vp_idx, status, cmd->state, se_cmd,
3928 *((u64 *)&crc->actual_dif[0]),
3929 *((u64 *)&crc->expected_dif[0]));
3930
3931 qlt_handle_dif_error(qpair, cmd, ctio);
3932 return;
3933 }
3934 default:
3935 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
3936 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
3937 vha->vp_idx, status, cmd->state, se_cmd);
3938 break;
3939 }
3940
3941
3942 /* "cmd->aborted" means
3943 * cmd is already aborted/terminated, we don't
3944 * need to terminate again. The exchange is already
3945 * cleaned up/freed at FW level. Just cleanup at driver
3946 * level.
3947 */
3948 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3949 (!cmd->aborted)) {
3950 cmd->trc_flags |= TRC_CTIO_ERR;
3951 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
3952 return;
3953 }
3954 }
3955
3956 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3957 cmd->trc_flags |= TRC_CTIO_DONE;
3958 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3959 cmd->state = QLA_TGT_STATE_DATA_IN;
3960
3961 if (status == CTIO_SUCCESS)
3962 cmd->write_data_transferred = 1;
3963
3964 ha->tgt.tgt_ops->handle_data(cmd);
3965 return;
3966 } else if (cmd->aborted) {
3967 cmd->trc_flags |= TRC_CTIO_ABORTED;
3968 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3969 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
3970 } else {
3971 cmd->trc_flags |= TRC_CTIO_STRANGE;
3972 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3973 "qla_target(%d): A command in state (%d) should "
3974 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3975 }
3976
3977 if (unlikely(status != CTIO_SUCCESS) &&
3978 !cmd->aborted) {
3979 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3980 dump_stack();
3981 }
3982
3983 ha->tgt.tgt_ops->free_cmd(cmd);
3984 }
3985
3986 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3987 uint8_t task_codes)
3988 {
3989 int fcp_task_attr;
3990
3991 switch (task_codes) {
3992 case ATIO_SIMPLE_QUEUE:
3993 fcp_task_attr = TCM_SIMPLE_TAG;
3994 break;
3995 case ATIO_HEAD_OF_QUEUE:
3996 fcp_task_attr = TCM_HEAD_TAG;
3997 break;
3998 case ATIO_ORDERED_QUEUE:
3999 fcp_task_attr = TCM_ORDERED_TAG;
4000 break;
4001 case ATIO_ACA_QUEUE:
4002 fcp_task_attr = TCM_ACA_TAG;
4003 break;
4004 case ATIO_UNTAGGED:
4005 fcp_task_attr = TCM_SIMPLE_TAG;
4006 break;
4007 default:
4008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4009 "qla_target: unknown task code %x, use ORDERED instead\n",
4010 task_codes);
4011 fcp_task_attr = TCM_ORDERED_TAG;
4012 break;
4013 }
4014
4015 return fcp_task_attr;
4016 }
4017
4018 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
4019 uint8_t *);
4020 /*
4021 * Process context for I/O path into tcm_qla2xxx code
4022 */
4023 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
4024 {
4025 scsi_qla_host_t *vha = cmd->vha;
4026 struct qla_hw_data *ha = vha->hw;
4027 struct fc_port *sess = cmd->sess;
4028 struct atio_from_isp *atio = &cmd->atio;
4029 unsigned char *cdb;
4030 unsigned long flags;
4031 uint32_t data_length;
4032 int ret, fcp_task_attr, data_dir, bidi = 0;
4033 struct qla_qpair *qpair = cmd->qpair;
4034
4035 cmd->cmd_in_wq = 0;
4036 cmd->trc_flags |= TRC_DO_WORK;
4037
4038 if (cmd->aborted) {
4039 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4040 "cmd with tag %u is aborted\n",
4041 cmd->atio.u.isp24.exchange_addr);
4042 goto out_term;
4043 }
4044
4045 spin_lock_init(&cmd->cmd_lock);
4046 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
4047 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
4048
4049 if (atio->u.isp24.fcp_cmnd.rddata &&
4050 atio->u.isp24.fcp_cmnd.wrdata) {
4051 bidi = 1;
4052 data_dir = DMA_TO_DEVICE;
4053 } else if (atio->u.isp24.fcp_cmnd.rddata)
4054 data_dir = DMA_FROM_DEVICE;
4055 else if (atio->u.isp24.fcp_cmnd.wrdata)
4056 data_dir = DMA_TO_DEVICE;
4057 else
4058 data_dir = DMA_NONE;
4059
4060 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4061 atio->u.isp24.fcp_cmnd.task_attr);
4062 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4063 &atio->u.isp24.fcp_cmnd.add_cdb[
4064 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4065
4066 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4067 fcp_task_attr, data_dir, bidi);
4068 if (ret != 0)
4069 goto out_term;
4070 /*
4071 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4072 */
4073 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4074 ha->tgt.tgt_ops->put_sess(sess);
4075 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4076 return;
4077
4078 out_term:
4079 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
4080 /*
4081 * cmd has not sent to target yet, so pass NULL as the second
4082 * argument to qlt_send_term_exchange() and free the memory here.
4083 */
4084 cmd->trc_flags |= TRC_DO_WORK_ERR;
4085 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4086 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
4087
4088 qlt_decr_num_pend_cmds(vha);
4089 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
4090 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4091
4092 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4093 ha->tgt.tgt_ops->put_sess(sess);
4094 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4095 }
4096
4097 static void qlt_do_work(struct work_struct *work)
4098 {
4099 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
4100 scsi_qla_host_t *vha = cmd->vha;
4101 unsigned long flags;
4102
4103 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4104 list_del(&cmd->cmd_list);
4105 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4106
4107 __qlt_do_work(cmd);
4108 }
4109
4110 void qlt_clr_qp_table(struct scsi_qla_host *vha)
4111 {
4112 unsigned long flags;
4113 struct qla_hw_data *ha = vha->hw;
4114 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4115 void *node;
4116 u64 key = 0;
4117
4118 ql_log(ql_log_info, vha, 0x706c,
4119 "User update Number of Active Qpairs %d\n",
4120 ha->tgt.num_act_qpairs);
4121
4122 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4123
4124 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4125 btree_remove64(&tgt->lun_qpair_map, key);
4126
4127 ha->base_qpair->lun_cnt = 0;
4128 for (key = 0; key < ha->max_qpairs; key++)
4129 if (ha->queue_pair_map[key])
4130 ha->queue_pair_map[key]->lun_cnt = 0;
4131
4132 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4133 }
4134
4135 static void qlt_assign_qpair(struct scsi_qla_host *vha,
4136 struct qla_tgt_cmd *cmd)
4137 {
4138 struct qla_qpair *qpair, *qp;
4139 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4140 struct qla_qpair_hint *h;
4141
4142 if (vha->flags.qpairs_available) {
4143 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4144 if (unlikely(!h)) {
4145 /* spread lun to qpair ratio evently */
4146 int lcnt = 0, rc;
4147 struct scsi_qla_host *base_vha =
4148 pci_get_drvdata(vha->hw->pdev);
4149
4150 qpair = vha->hw->base_qpair;
4151 if (qpair->lun_cnt == 0) {
4152 qpair->lun_cnt++;
4153 h = qla_qpair_to_hint(tgt, qpair);
4154 BUG_ON(!h);
4155 rc = btree_insert64(&tgt->lun_qpair_map,
4156 cmd->unpacked_lun, h, GFP_ATOMIC);
4157 if (rc) {
4158 qpair->lun_cnt--;
4159 ql_log(ql_log_info, vha, 0xd037,
4160 "Unable to insert lun %llx into lun_qpair_map\n",
4161 cmd->unpacked_lun);
4162 }
4163 goto out;
4164 } else {
4165 lcnt = qpair->lun_cnt;
4166 }
4167
4168 h = NULL;
4169 list_for_each_entry(qp, &base_vha->qp_list,
4170 qp_list_elem) {
4171 if (qp->lun_cnt == 0) {
4172 qp->lun_cnt++;
4173 h = qla_qpair_to_hint(tgt, qp);
4174 BUG_ON(!h);
4175 rc = btree_insert64(&tgt->lun_qpair_map,
4176 cmd->unpacked_lun, h, GFP_ATOMIC);
4177 if (rc) {
4178 qp->lun_cnt--;
4179 ql_log(ql_log_info, vha, 0xd038,
4180 "Unable to insert lun %llx into lun_qpair_map\n",
4181 cmd->unpacked_lun);
4182 }
4183 qpair = qp;
4184 goto out;
4185 } else {
4186 if (qp->lun_cnt < lcnt) {
4187 lcnt = qp->lun_cnt;
4188 qpair = qp;
4189 continue;
4190 }
4191 }
4192 }
4193 BUG_ON(!qpair);
4194 qpair->lun_cnt++;
4195 h = qla_qpair_to_hint(tgt, qpair);
4196 BUG_ON(!h);
4197 rc = btree_insert64(&tgt->lun_qpair_map,
4198 cmd->unpacked_lun, h, GFP_ATOMIC);
4199 if (rc) {
4200 qpair->lun_cnt--;
4201 ql_log(ql_log_info, vha, 0xd039,
4202 "Unable to insert lun %llx into lun_qpair_map\n",
4203 cmd->unpacked_lun);
4204 }
4205 }
4206 } else {
4207 h = &tgt->qphints[0];
4208 }
4209 out:
4210 cmd->qpair = h->qpair;
4211 cmd->se_cmd.cpuid = h->cpuid;
4212 }
4213
4214 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
4215 struct fc_port *sess,
4216 struct atio_from_isp *atio)
4217 {
4218 struct se_session *se_sess = sess->se_sess;
4219 struct qla_tgt_cmd *cmd;
4220 int tag;
4221
4222 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4223 if (tag < 0)
4224 return NULL;
4225
4226 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4227 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4228 cmd->cmd_type = TYPE_TGT_CMD;
4229 memcpy(&cmd->atio, atio, sizeof(*atio));
4230 cmd->state = QLA_TGT_STATE_NEW;
4231 cmd->tgt = vha->vha_tgt.qla_tgt;
4232 qlt_incr_num_pend_cmds(vha);
4233 cmd->vha = vha;
4234 cmd->se_cmd.map_tag = tag;
4235 cmd->sess = sess;
4236 cmd->loop_id = sess->loop_id;
4237 cmd->conf_compl_supported = sess->conf_compl_supported;
4238
4239 cmd->trc_flags = 0;
4240 cmd->jiffies_at_alloc = get_jiffies_64();
4241
4242 cmd->unpacked_lun = scsilun_to_int(
4243 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4244 qlt_assign_qpair(vha, cmd);
4245 cmd->reset_count = vha->hw->base_qpair->chip_reset;
4246 cmd->vp_idx = vha->vp_idx;
4247
4248 return cmd;
4249 }
4250
4251 /* ha->hardware_lock supposed to be held on entry */
4252 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4253 struct atio_from_isp *atio)
4254 {
4255 struct qla_hw_data *ha = vha->hw;
4256 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4257 struct fc_port *sess;
4258 struct qla_tgt_cmd *cmd;
4259 unsigned long flags;
4260 port_id_t id;
4261
4262 if (unlikely(tgt->tgt_stop)) {
4263 ql_dbg(ql_dbg_io, vha, 0x3061,
4264 "New command while device %p is shutting down\n", tgt);
4265 return -ENODEV;
4266 }
4267
4268 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2];
4269 id.b.area = atio->u.isp24.fcp_hdr.s_id[1];
4270 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0];
4271 if (IS_SW_RESV_ADDR(id))
4272 return -EBUSY;
4273
4274 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4275 if (unlikely(!sess))
4276 return -EFAULT;
4277
4278 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4279 * session deletion, but it's still in sess_del_work wq */
4280 if (sess->deleted) {
4281 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
4282 "New command while old session %p is being deleted\n",
4283 sess);
4284 return -EFAULT;
4285 }
4286
4287 /*
4288 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4289 */
4290 if (!kref_get_unless_zero(&sess->sess_kref)) {
4291 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
4292 "%s: kref_get fail, %8phC oxid %x \n",
4293 __func__, sess->port_name,
4294 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4295 return -EFAULT;
4296 }
4297
4298 cmd = qlt_get_tag(vha, sess, atio);
4299 if (!cmd) {
4300 ql_dbg(ql_dbg_io, vha, 0x3062,
4301 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4302 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4303 ha->tgt.tgt_ops->put_sess(sess);
4304 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4305 return -EBUSY;
4306 }
4307
4308 cmd->cmd_in_wq = 1;
4309 cmd->trc_flags |= TRC_NEW_CMD;
4310
4311 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4312 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4313 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4314
4315 INIT_WORK(&cmd->work, qlt_do_work);
4316 if (vha->flags.qpairs_available) {
4317 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4318 } else if (ha->msix_count) {
4319 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4320 queue_work_on(smp_processor_id(), qla_tgt_wq,
4321 &cmd->work);
4322 else
4323 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4324 &cmd->work);
4325 } else {
4326 queue_work(qla_tgt_wq, &cmd->work);
4327 }
4328
4329 return 0;
4330 }
4331
4332 /* ha->hardware_lock supposed to be held on entry */
4333 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
4334 int fn, void *iocb, int flags)
4335 {
4336 struct scsi_qla_host *vha = sess->vha;
4337 struct qla_hw_data *ha = vha->hw;
4338 struct qla_tgt_mgmt_cmd *mcmd;
4339 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4340 int res;
4341
4342 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4343 if (!mcmd) {
4344 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4345 "qla_target(%d): Allocation of management "
4346 "command failed, some commands and their data could "
4347 "leak\n", vha->vp_idx);
4348 return -ENOMEM;
4349 }
4350 memset(mcmd, 0, sizeof(*mcmd));
4351 mcmd->sess = sess;
4352
4353 if (iocb) {
4354 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4355 sizeof(mcmd->orig_iocb.imm_ntfy));
4356 }
4357 mcmd->tmr_func = fn;
4358 mcmd->flags = flags;
4359 mcmd->reset_count = ha->base_qpair->chip_reset;
4360 mcmd->qpair = ha->base_qpair;
4361 mcmd->vha = vha;
4362
4363 switch (fn) {
4364 case QLA_TGT_LUN_RESET:
4365 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4366 break;
4367 }
4368
4369 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
4370 if (res != 0) {
4371 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4372 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4373 sess->vha->vp_idx, res);
4374 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4375 return -EFAULT;
4376 }
4377
4378 return 0;
4379 }
4380
4381 /* ha->hardware_lock supposed to be held on entry */
4382 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4383 {
4384 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4385 struct qla_hw_data *ha = vha->hw;
4386 struct fc_port *sess;
4387 u64 unpacked_lun;
4388 int fn;
4389 unsigned long flags;
4390
4391 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4392
4393 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4394 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4395 a->u.isp24.fcp_hdr.s_id);
4396 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4397
4398 unpacked_lun =
4399 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4400
4401 if (sess == NULL || sess->deleted)
4402 return -EFAULT;
4403
4404 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4405 }
4406
4407 /* ha->hardware_lock supposed to be held on entry */
4408 static int __qlt_abort_task(struct scsi_qla_host *vha,
4409 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
4410 {
4411 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4412 struct qla_hw_data *ha = vha->hw;
4413 struct qla_tgt_mgmt_cmd *mcmd;
4414 u64 unpacked_lun;
4415 int rc;
4416
4417 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4418 if (mcmd == NULL) {
4419 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4420 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4421 vha->vp_idx, __func__);
4422 return -ENOMEM;
4423 }
4424 memset(mcmd, 0, sizeof(*mcmd));
4425
4426 mcmd->sess = sess;
4427 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4428 sizeof(mcmd->orig_iocb.imm_ntfy));
4429
4430 unpacked_lun =
4431 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4432 mcmd->reset_count = ha->base_qpair->chip_reset;
4433 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
4434 mcmd->qpair = ha->base_qpair;
4435
4436 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
4437 le16_to_cpu(iocb->u.isp2x.seq_id));
4438 if (rc != 0) {
4439 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4440 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4441 vha->vp_idx, rc);
4442 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4443 return -EFAULT;
4444 }
4445
4446 return 0;
4447 }
4448
4449 /* ha->hardware_lock supposed to be held on entry */
4450 static int qlt_abort_task(struct scsi_qla_host *vha,
4451 struct imm_ntfy_from_isp *iocb)
4452 {
4453 struct qla_hw_data *ha = vha->hw;
4454 struct fc_port *sess;
4455 int loop_id;
4456 unsigned long flags;
4457
4458 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4459
4460 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4461 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4462 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4463
4464 if (sess == NULL) {
4465 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4466 "qla_target(%d): task abort for unexisting "
4467 "session\n", vha->vp_idx);
4468 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4469 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4470 }
4471
4472 return __qlt_abort_task(vha, iocb, sess);
4473 }
4474
4475 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4476 {
4477 if (rc != MBS_COMMAND_COMPLETE) {
4478 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4479 "%s: se_sess %p / sess %p from"
4480 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4481 " LOGO failed: %#x\n",
4482 __func__,
4483 fcport->se_sess,
4484 fcport,
4485 fcport->port_name, fcport->loop_id,
4486 fcport->d_id.b.domain, fcport->d_id.b.area,
4487 fcport->d_id.b.al_pa, rc);
4488 }
4489
4490 fcport->logout_completed = 1;
4491 }
4492
4493 /*
4494 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4495 *
4496 * Schedules sessions with matching port_id/loop_id but different wwn for
4497 * deletion. Returns existing session with matching wwn if present.
4498 * Null otherwise.
4499 */
4500 struct fc_port *
4501 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
4502 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
4503 {
4504 struct fc_port *sess = NULL, *other_sess;
4505 uint64_t other_wwn;
4506
4507 *conflict_sess = NULL;
4508
4509 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
4510
4511 other_wwn = wwn_to_u64(other_sess->port_name);
4512
4513 if (wwn == other_wwn) {
4514 WARN_ON(sess);
4515 sess = other_sess;
4516 continue;
4517 }
4518
4519 /* find other sess with nport_id collision */
4520 if (port_id.b24 == other_sess->d_id.b24) {
4521 if (loop_id != other_sess->loop_id) {
4522 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
4523 "Invalidating sess %p loop_id %d wwn %llx.\n",
4524 other_sess, other_sess->loop_id, other_wwn);
4525
4526 /*
4527 * logout_on_delete is set by default, but another
4528 * session that has the same s_id/loop_id combo
4529 * might have cleared it when requested this session
4530 * deletion, so don't touch it
4531 */
4532 qlt_schedule_sess_for_deletion(other_sess);
4533 } else {
4534 /*
4535 * Another wwn used to have our s_id/loop_id
4536 * kill the session, but don't free the loop_id
4537 */
4538 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
4539 "Invalidating sess %p loop_id %d wwn %llx.\n",
4540 other_sess, other_sess->loop_id, other_wwn);
4541
4542 other_sess->keep_nport_handle = 1;
4543 if (other_sess->disc_state != DSC_DELETED)
4544 *conflict_sess = other_sess;
4545 qlt_schedule_sess_for_deletion(other_sess);
4546 }
4547 continue;
4548 }
4549
4550 /* find other sess with nport handle collision */
4551 if ((loop_id == other_sess->loop_id) &&
4552 (loop_id != FC_NO_LOOP_ID)) {
4553 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
4554 "Invalidating sess %p loop_id %d wwn %llx.\n",
4555 other_sess, other_sess->loop_id, other_wwn);
4556
4557 /* Same loop_id but different s_id
4558 * Ok to kill and logout */
4559 qlt_schedule_sess_for_deletion(other_sess);
4560 }
4561 }
4562
4563 return sess;
4564 }
4565
4566 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4567 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4568 {
4569 struct qla_tgt_sess_op *op;
4570 struct qla_tgt_cmd *cmd;
4571 uint32_t key;
4572 int count = 0;
4573 unsigned long flags;
4574
4575 key = (((u32)s_id->b.domain << 16) |
4576 ((u32)s_id->b.area << 8) |
4577 ((u32)s_id->b.al_pa));
4578
4579 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4580 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4581 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4582
4583 if (op_key == key) {
4584 op->aborted = true;
4585 count++;
4586 }
4587 }
4588
4589 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4590 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4591 if (op_key == key) {
4592 op->aborted = true;
4593 count++;
4594 }
4595 }
4596
4597 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4598 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4599 if (cmd_key == key) {
4600 cmd->aborted = 1;
4601 count++;
4602 }
4603 }
4604 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4605
4606 return count;
4607 }
4608
4609 static int qlt_handle_login(struct scsi_qla_host *vha,
4610 struct imm_ntfy_from_isp *iocb)
4611 {
4612 struct fc_port *sess = NULL, *conflict_sess = NULL;
4613 uint64_t wwn;
4614 port_id_t port_id;
4615 uint16_t loop_id, wd3_lo;
4616 int res = 0;
4617 struct qlt_plogi_ack_t *pla;
4618 unsigned long flags;
4619
4620 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4621
4622 port_id.b.domain = iocb->u.isp24.port_id[2];
4623 port_id.b.area = iocb->u.isp24.port_id[1];
4624 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4625 port_id.b.rsvd_1 = 0;
4626
4627 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4628
4629 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4630 abort_cmds_for_s_id(vha, &port_id);
4631
4632 if (wwn) {
4633 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4634 sess = qlt_find_sess_invalidate_other(vha, wwn,
4635 port_id, loop_id, &conflict_sess);
4636 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4637 }
4638
4639 if (IS_SW_RESV_ADDR(port_id)) {
4640 res = 1;
4641 goto out;
4642 }
4643
4644 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4645 if (!pla) {
4646 qlt_send_term_imm_notif(vha, iocb, 1);
4647 goto out;
4648 }
4649
4650 if (conflict_sess) {
4651 conflict_sess->login_gen++;
4652 qlt_plogi_ack_link(vha, pla, conflict_sess,
4653 QLT_PLOGI_LINK_CONFLICT);
4654 }
4655
4656 if (!sess) {
4657 pla->ref_count++;
4658 ql_dbg(ql_dbg_disc, vha, 0xffff,
4659 "%s %d %8phC post new sess\n",
4660 __func__, __LINE__, iocb->u.isp24.port_name);
4661 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4662 qla24xx_post_newsess_work(vha, &port_id,
4663 iocb->u.isp24.port_name,
4664 iocb->u.isp24.u.plogi.node_name,
4665 pla, FC4_TYPE_UNKNOWN);
4666 else
4667 qla24xx_post_newsess_work(vha, &port_id,
4668 iocb->u.isp24.port_name, NULL,
4669 pla, FC4_TYPE_UNKNOWN);
4670
4671 goto out;
4672 }
4673
4674 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4675 sess->d_id = port_id;
4676 sess->login_gen++;
4677
4678 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4679 sess->fw_login_state = DSC_LS_PRLI_PEND;
4680 sess->local = 0;
4681 sess->loop_id = loop_id;
4682 sess->d_id = port_id;
4683 sess->fw_login_state = DSC_LS_PRLI_PEND;
4684 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4685
4686 if (wd3_lo & BIT_7)
4687 sess->conf_compl_supported = 1;
4688
4689 if ((wd3_lo & BIT_4) == 0)
4690 sess->port_type = FCT_INITIATOR;
4691 else
4692 sess->port_type = FCT_TARGET;
4693
4694 } else
4695 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4696
4697
4698 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4699 "%s %d %8phC DS %d\n",
4700 __func__, __LINE__, sess->port_name, sess->disc_state);
4701
4702 switch (sess->disc_state) {
4703 case DSC_DELETED:
4704 qlt_plogi_ack_unref(vha, pla);
4705 break;
4706
4707 default:
4708 /*
4709 * Under normal circumstances we want to release nport handle
4710 * during LOGO process to avoid nport handle leaks inside FW.
4711 * The exception is when LOGO is done while another PLOGI with
4712 * the same nport handle is waiting as might be the case here.
4713 * Note: there is always a possibily of a race where session
4714 * deletion has already started for other reasons (e.g. ACL
4715 * removal) and now PLOGI arrives:
4716 * 1. if PLOGI arrived in FW after nport handle has been freed,
4717 * FW must have assigned this PLOGI a new/same handle and we
4718 * can proceed ACK'ing it as usual when session deletion
4719 * completes.
4720 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4721 * bit reached it, the handle has now been released. We'll
4722 * get an error when we ACK this PLOGI. Nothing will be sent
4723 * back to initiator. Initiator should eventually retry
4724 * PLOGI and situation will correct itself.
4725 */
4726 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4727 (sess->d_id.b24 == port_id.b24));
4728
4729 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4730 "%s %d %8phC post del sess\n",
4731 __func__, __LINE__, sess->port_name);
4732
4733
4734 qlt_schedule_sess_for_deletion(sess);
4735 break;
4736 }
4737 out:
4738 return res;
4739 }
4740
4741 /*
4742 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4743 */
4744 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4745 struct imm_ntfy_from_isp *iocb)
4746 {
4747 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4748 struct qla_hw_data *ha = vha->hw;
4749 struct fc_port *sess = NULL, *conflict_sess = NULL;
4750 uint64_t wwn;
4751 port_id_t port_id;
4752 uint16_t loop_id;
4753 uint16_t wd3_lo;
4754 int res = 0;
4755 unsigned long flags;
4756
4757 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4758
4759 port_id.b.domain = iocb->u.isp24.port_id[2];
4760 port_id.b.area = iocb->u.isp24.port_id[1];
4761 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4762 port_id.b.rsvd_1 = 0;
4763
4764 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4765
4766 ql_dbg(ql_dbg_disc, vha, 0xf026,
4767 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4768 vha->vp_idx, iocb->u.isp24.port_id[2],
4769 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4770 iocb->u.isp24.status_subcode, loop_id,
4771 iocb->u.isp24.port_name);
4772
4773 /* res = 1 means ack at the end of thread
4774 * res = 0 means ack async/later.
4775 */
4776 switch (iocb->u.isp24.status_subcode) {
4777 case ELS_PLOGI:
4778 res = qlt_handle_login(vha, iocb);
4779 break;
4780
4781 case ELS_PRLI:
4782 if (N2N_TOPO(ha)) {
4783 sess = qla2x00_find_fcport_by_wwpn(vha,
4784 iocb->u.isp24.port_name, 1);
4785
4786 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4787 ql_dbg(ql_dbg_disc, vha, 0xffff,
4788 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4789 __func__, __LINE__,
4790 iocb->u.isp24.port_name);
4791 qlt_send_term_imm_notif(vha, iocb, 1);
4792 break;
4793 }
4794
4795 res = qlt_handle_login(vha, iocb);
4796 break;
4797 }
4798
4799 if (IS_SW_RESV_ADDR(port_id)) {
4800 res = 1;
4801 break;
4802 }
4803
4804 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4805
4806 if (wwn) {
4807 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4808 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4809 loop_id, &conflict_sess);
4810 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4811 }
4812
4813 if (conflict_sess) {
4814 switch (conflict_sess->disc_state) {
4815 case DSC_DELETED:
4816 case DSC_DELETE_PEND:
4817 break;
4818 default:
4819 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4820 "PRLI with conflicting sess %p port %8phC\n",
4821 conflict_sess, conflict_sess->port_name);
4822 conflict_sess->fw_login_state =
4823 DSC_LS_PORT_UNAVAIL;
4824 qlt_send_term_imm_notif(vha, iocb, 1);
4825 res = 0;
4826 break;
4827 }
4828 }
4829
4830 if (sess != NULL) {
4831 bool delete = false;
4832 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4833 switch (sess->fw_login_state) {
4834 case DSC_LS_PLOGI_PEND:
4835 case DSC_LS_PLOGI_COMP:
4836 case DSC_LS_PRLI_COMP:
4837 break;
4838 default:
4839 delete = true;
4840 break;
4841 }
4842
4843 switch (sess->disc_state) {
4844 case DSC_LOGIN_PEND:
4845 case DSC_GPDB:
4846 case DSC_GPSC:
4847 case DSC_UPD_FCPORT:
4848 case DSC_LOGIN_COMPLETE:
4849 case DSC_ADISC:
4850 delete = false;
4851 break;
4852 default:
4853 break;
4854 }
4855
4856 if (delete) {
4857 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4858 flags);
4859 /*
4860 * Impatient initiator sent PRLI before last
4861 * PLOGI could finish. Will force him to re-try,
4862 * while last one finishes.
4863 */
4864 ql_log(ql_log_warn, sess->vha, 0xf095,
4865 "sess %p PRLI received, before plogi ack.\n",
4866 sess);
4867 qlt_send_term_imm_notif(vha, iocb, 1);
4868 res = 0;
4869 break;
4870 }
4871
4872 /*
4873 * This shouldn't happen under normal circumstances,
4874 * since we have deleted the old session during PLOGI
4875 */
4876 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
4877 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4878 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4879
4880 sess->local = 0;
4881 sess->loop_id = loop_id;
4882 sess->d_id = port_id;
4883 sess->fw_login_state = DSC_LS_PRLI_PEND;
4884
4885 if (wd3_lo & BIT_7)
4886 sess->conf_compl_supported = 1;
4887
4888 if ((wd3_lo & BIT_4) == 0)
4889 sess->port_type = FCT_INITIATOR;
4890 else
4891 sess->port_type = FCT_TARGET;
4892
4893 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4894 }
4895 res = 1; /* send notify ack */
4896
4897 /* Make session global (not used in fabric mode) */
4898 if (ha->current_topology != ISP_CFG_F) {
4899 if (sess) {
4900 ql_dbg(ql_dbg_disc, vha, 0x20fa,
4901 "%s %d %8phC post nack\n",
4902 __func__, __LINE__, sess->port_name);
4903 qla24xx_post_nack_work(vha, sess, iocb,
4904 SRB_NACK_PRLI);
4905 res = 0;
4906 } else {
4907 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4908 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4909 qla2xxx_wake_dpc(vha);
4910 }
4911 } else {
4912 if (sess) {
4913 ql_dbg(ql_dbg_disc, vha, 0x20fb,
4914 "%s %d %8phC post nack\n",
4915 __func__, __LINE__, sess->port_name);
4916 qla24xx_post_nack_work(vha, sess, iocb,
4917 SRB_NACK_PRLI);
4918 res = 0;
4919 }
4920 }
4921 break;
4922
4923 case ELS_TPRLO:
4924 if (le16_to_cpu(iocb->u.isp24.flags) &
4925 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4926 loop_id = 0xFFFF;
4927 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4928 res = 1;
4929 break;
4930 }
4931 /* fall through */
4932 case ELS_LOGO:
4933 case ELS_PRLO:
4934 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4935 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4936 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4937
4938 if (sess) {
4939 sess->login_gen++;
4940 sess->fw_login_state = DSC_LS_LOGO_PEND;
4941 sess->logo_ack_needed = 1;
4942 memcpy(sess->iocb, iocb, IOCB_SIZE);
4943 }
4944
4945 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4946
4947 ql_dbg(ql_dbg_disc, vha, 0x20fc,
4948 "%s: logo %llx res %d sess %p ",
4949 __func__, wwn, res, sess);
4950 if (res == 0) {
4951 /*
4952 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4953 * for LOGO_ACK & sess delete
4954 */
4955 BUG_ON(!sess);
4956 res = 0;
4957 } else {
4958 /* cmd did not go to upper layer. */
4959 if (sess) {
4960 qlt_schedule_sess_for_deletion(sess);
4961 res = 0;
4962 }
4963 /* else logo will be ack */
4964 }
4965 break;
4966 case ELS_PDISC:
4967 case ELS_ADISC:
4968 {
4969 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4970 if (tgt->link_reinit_iocb_pending) {
4971 qlt_send_notify_ack(ha->base_qpair,
4972 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
4973 tgt->link_reinit_iocb_pending = 0;
4974 }
4975
4976 sess = qla2x00_find_fcport_by_wwpn(vha,
4977 iocb->u.isp24.port_name, 1);
4978 if (sess) {
4979 ql_dbg(ql_dbg_disc, vha, 0x20fd,
4980 "sess %p lid %d|%d DS %d LS %d\n",
4981 sess, sess->loop_id, loop_id,
4982 sess->disc_state, sess->fw_login_state);
4983 }
4984
4985 res = 1; /* send notify ack */
4986 break;
4987 }
4988
4989 case ELS_FLOGI: /* should never happen */
4990 default:
4991 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4992 "qla_target(%d): Unsupported ELS command %x "
4993 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4994 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4995 break;
4996 }
4997
4998 ql_dbg(ql_dbg_disc, vha, 0xf026,
4999 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5000 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5001
5002 return res;
5003 }
5004
5005 /*
5006 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5007 */
5008 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5009 struct imm_ntfy_from_isp *iocb)
5010 {
5011 struct qla_hw_data *ha = vha->hw;
5012 uint32_t add_flags = 0;
5013 int send_notify_ack = 1;
5014 uint16_t status;
5015
5016 status = le16_to_cpu(iocb->u.isp2x.status);
5017 switch (status) {
5018 case IMM_NTFY_LIP_RESET:
5019 {
5020 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5021 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5022 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5023 iocb->u.isp24.status_subcode);
5024
5025 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5026 send_notify_ack = 0;
5027 break;
5028 }
5029
5030 case IMM_NTFY_LIP_LINK_REINIT:
5031 {
5032 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5033 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5034 "qla_target(%d): LINK REINIT (loop %#x, "
5035 "subcode %x)\n", vha->vp_idx,
5036 le16_to_cpu(iocb->u.isp24.nport_handle),
5037 iocb->u.isp24.status_subcode);
5038 if (tgt->link_reinit_iocb_pending) {
5039 qlt_send_notify_ack(ha->base_qpair,
5040 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5041 }
5042 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5043 tgt->link_reinit_iocb_pending = 1;
5044 /*
5045 * QLogic requires to wait after LINK REINIT for possible
5046 * PDISC or ADISC ELS commands
5047 */
5048 send_notify_ack = 0;
5049 break;
5050 }
5051
5052 case IMM_NTFY_PORT_LOGOUT:
5053 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5054 "qla_target(%d): Port logout (loop "
5055 "%#x, subcode %x)\n", vha->vp_idx,
5056 le16_to_cpu(iocb->u.isp24.nport_handle),
5057 iocb->u.isp24.status_subcode);
5058
5059 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5060 send_notify_ack = 0;
5061 /* The sessions will be cleared in the callback, if needed */
5062 break;
5063
5064 case IMM_NTFY_GLBL_TPRLO:
5065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5066 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5067 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5068 send_notify_ack = 0;
5069 /* The sessions will be cleared in the callback, if needed */
5070 break;
5071
5072 case IMM_NTFY_PORT_CONFIG:
5073 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5074 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5075 status);
5076 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5077 send_notify_ack = 0;
5078 /* The sessions will be cleared in the callback, if needed */
5079 break;
5080
5081 case IMM_NTFY_GLBL_LOGO:
5082 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5083 "qla_target(%d): Link failure detected\n",
5084 vha->vp_idx);
5085 /* I_T nexus loss */
5086 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5087 send_notify_ack = 0;
5088 break;
5089
5090 case IMM_NTFY_IOCB_OVERFLOW:
5091 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5092 "qla_target(%d): Cannot provide requested "
5093 "capability (IOCB overflowed the immediate notify "
5094 "resource count)\n", vha->vp_idx);
5095 break;
5096
5097 case IMM_NTFY_ABORT_TASK:
5098 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5099 "qla_target(%d): Abort Task (S %08x I %#x -> "
5100 "L %#x)\n", vha->vp_idx,
5101 le16_to_cpu(iocb->u.isp2x.seq_id),
5102 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5103 le16_to_cpu(iocb->u.isp2x.lun));
5104 if (qlt_abort_task(vha, iocb) == 0)
5105 send_notify_ack = 0;
5106 break;
5107
5108 case IMM_NTFY_RESOURCE:
5109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5110 "qla_target(%d): Out of resources, host %ld\n",
5111 vha->vp_idx, vha->host_no);
5112 break;
5113
5114 case IMM_NTFY_MSG_RX:
5115 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5116 "qla_target(%d): Immediate notify task %x\n",
5117 vha->vp_idx, iocb->u.isp2x.task_flags);
5118 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5119 send_notify_ack = 0;
5120 break;
5121
5122 case IMM_NTFY_ELS:
5123 if (qlt_24xx_handle_els(vha, iocb) == 0)
5124 send_notify_ack = 0;
5125 break;
5126 default:
5127 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5128 "qla_target(%d): Received unknown immediate "
5129 "notify status %x\n", vha->vp_idx, status);
5130 break;
5131 }
5132
5133 if (send_notify_ack)
5134 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5135 0, 0);
5136 }
5137
5138 /*
5139 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5140 * This function sends busy to ISP 2xxx or 24xx.
5141 */
5142 static int __qlt_send_busy(struct qla_qpair *qpair,
5143 struct atio_from_isp *atio, uint16_t status)
5144 {
5145 struct scsi_qla_host *vha = qpair->vha;
5146 struct ctio7_to_24xx *ctio24;
5147 struct qla_hw_data *ha = vha->hw;
5148 request_t *pkt;
5149 struct fc_port *sess = NULL;
5150 unsigned long flags;
5151 u16 temp;
5152
5153 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5154 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5155 atio->u.isp24.fcp_hdr.s_id);
5156 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5157 if (!sess) {
5158 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
5159 return 0;
5160 }
5161 /* Sending marker isn't necessary, since we called from ISR */
5162
5163 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
5164 if (!pkt) {
5165 ql_dbg(ql_dbg_io, vha, 0x3063,
5166 "qla_target(%d): %s failed: unable to allocate "
5167 "request packet", vha->vp_idx, __func__);
5168 return -ENOMEM;
5169 }
5170
5171 qpair->tgt_counters.num_q_full_sent++;
5172 pkt->entry_count = 1;
5173 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5174
5175 ctio24 = (struct ctio7_to_24xx *)pkt;
5176 ctio24->entry_type = CTIO_TYPE7;
5177 ctio24->nport_handle = sess->loop_id;
5178 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5179 ctio24->vp_index = vha->vp_idx;
5180 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5181 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5182 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5183 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5184 temp = (atio->u.isp24.attr << 9) |
5185 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5186 CTIO7_FLAGS_DONT_RET_CTIO;
5187 ctio24->u.status1.flags = cpu_to_le16(temp);
5188 /*
5189 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5190 * if the explicit conformation is used.
5191 */
5192 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5193 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5194 /* Memory Barrier */
5195 wmb();
5196 if (qpair->reqq_start_iocbs)
5197 qpair->reqq_start_iocbs(qpair);
5198 else
5199 qla2x00_start_iocbs(vha, qpair->req);
5200 return 0;
5201 }
5202
5203 /*
5204 * This routine is used to allocate a command for either a QFull condition
5205 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5206 * out previously.
5207 */
5208 static void
5209 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5210 struct atio_from_isp *atio, uint16_t status, int qfull)
5211 {
5212 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5213 struct qla_hw_data *ha = vha->hw;
5214 struct fc_port *sess;
5215 struct se_session *se_sess;
5216 struct qla_tgt_cmd *cmd;
5217 int tag;
5218 unsigned long flags;
5219
5220 if (unlikely(tgt->tgt_stop)) {
5221 ql_dbg(ql_dbg_io, vha, 0x300a,
5222 "New command while device %p is shutting down\n", tgt);
5223 return;
5224 }
5225
5226 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5227 vha->hw->tgt.num_qfull_cmds_dropped++;
5228 if (vha->hw->tgt.num_qfull_cmds_dropped >
5229 vha->qla_stats.stat_max_qfull_cmds_dropped)
5230 vha->qla_stats.stat_max_qfull_cmds_dropped =
5231 vha->hw->tgt.num_qfull_cmds_dropped;
5232
5233 ql_dbg(ql_dbg_io, vha, 0x3068,
5234 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5235 vha->vp_idx, __func__,
5236 vha->hw->tgt.num_qfull_cmds_dropped);
5237
5238 qlt_chk_exch_leak_thresh_hold(vha);
5239 return;
5240 }
5241
5242 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5243 (vha, atio->u.isp24.fcp_hdr.s_id);
5244 if (!sess)
5245 return;
5246
5247 se_sess = sess->se_sess;
5248
5249 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5250 if (tag < 0)
5251 return;
5252
5253 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5254 if (!cmd) {
5255 ql_dbg(ql_dbg_io, vha, 0x3009,
5256 "qla_target(%d): %s: Allocation of cmd failed\n",
5257 vha->vp_idx, __func__);
5258
5259 vha->hw->tgt.num_qfull_cmds_dropped++;
5260 if (vha->hw->tgt.num_qfull_cmds_dropped >
5261 vha->qla_stats.stat_max_qfull_cmds_dropped)
5262 vha->qla_stats.stat_max_qfull_cmds_dropped =
5263 vha->hw->tgt.num_qfull_cmds_dropped;
5264
5265 qlt_chk_exch_leak_thresh_hold(vha);
5266 return;
5267 }
5268
5269 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5270
5271 qlt_incr_num_pend_cmds(vha);
5272 INIT_LIST_HEAD(&cmd->cmd_list);
5273 memcpy(&cmd->atio, atio, sizeof(*atio));
5274
5275 cmd->tgt = vha->vha_tgt.qla_tgt;
5276 cmd->vha = vha;
5277 cmd->reset_count = ha->base_qpair->chip_reset;
5278 cmd->q_full = 1;
5279 cmd->qpair = ha->base_qpair;
5280
5281 if (qfull) {
5282 cmd->q_full = 1;
5283 /* NOTE: borrowing the state field to carry the status */
5284 cmd->state = status;
5285 } else
5286 cmd->term_exchg = 1;
5287
5288 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5289 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5290
5291 vha->hw->tgt.num_qfull_cmds_alloc++;
5292 if (vha->hw->tgt.num_qfull_cmds_alloc >
5293 vha->qla_stats.stat_max_qfull_cmds_alloc)
5294 vha->qla_stats.stat_max_qfull_cmds_alloc =
5295 vha->hw->tgt.num_qfull_cmds_alloc;
5296 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5297 }
5298
5299 int
5300 qlt_free_qfull_cmds(struct qla_qpair *qpair)
5301 {
5302 struct scsi_qla_host *vha = qpair->vha;
5303 struct qla_hw_data *ha = vha->hw;
5304 unsigned long flags;
5305 struct qla_tgt_cmd *cmd, *tcmd;
5306 struct list_head free_list, q_full_list;
5307 int rc = 0;
5308
5309 if (list_empty(&ha->tgt.q_full_list))
5310 return 0;
5311
5312 INIT_LIST_HEAD(&free_list);
5313 INIT_LIST_HEAD(&q_full_list);
5314
5315 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5316 if (list_empty(&ha->tgt.q_full_list)) {
5317 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5318 return 0;
5319 }
5320
5321 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5322 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5323
5324 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5325 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
5326 if (cmd->q_full)
5327 /* cmd->state is a borrowed field to hold status */
5328 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
5329 else if (cmd->term_exchg)
5330 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
5331
5332 if (rc == -ENOMEM)
5333 break;
5334
5335 if (cmd->q_full)
5336 ql_dbg(ql_dbg_io, vha, 0x3006,
5337 "%s: busy sent for ox_id[%04x]\n", __func__,
5338 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5339 else if (cmd->term_exchg)
5340 ql_dbg(ql_dbg_io, vha, 0x3007,
5341 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5342 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5343 else
5344 ql_dbg(ql_dbg_io, vha, 0x3008,
5345 "%s: Unexpected cmd in QFull list %p\n", __func__,
5346 cmd);
5347
5348 list_del(&cmd->cmd_list);
5349 list_add_tail(&cmd->cmd_list, &free_list);
5350
5351 /* piggy back on hardware_lock for protection */
5352 vha->hw->tgt.num_qfull_cmds_alloc--;
5353 }
5354 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
5355
5356 cmd = NULL;
5357
5358 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5359 list_del(&cmd->cmd_list);
5360 /* This cmd was never sent to TCM. There is no need
5361 * to schedule free or call free_cmd
5362 */
5363 qlt_free_cmd(cmd);
5364 }
5365
5366 if (!list_empty(&q_full_list)) {
5367 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5368 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5369 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5370 }
5371
5372 return rc;
5373 }
5374
5375 static void
5376 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5377 uint16_t status)
5378 {
5379 int rc = 0;
5380 struct scsi_qla_host *vha = qpair->vha;
5381
5382 rc = __qlt_send_busy(qpair, atio, status);
5383 if (rc == -ENOMEM)
5384 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5385 }
5386
5387 static int
5388 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5389 struct atio_from_isp *atio, uint8_t ha_locked)
5390 {
5391 struct qla_hw_data *ha = vha->hw;
5392 unsigned long flags;
5393
5394 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5395 return 0;
5396
5397 if (!ha_locked)
5398 spin_lock_irqsave(&ha->hardware_lock, flags);
5399 qlt_send_busy(qpair, atio, qla_sam_status);
5400 if (!ha_locked)
5401 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5402
5403 return 1;
5404 }
5405
5406 /* ha->hardware_lock supposed to be held on entry */
5407 /* called via callback from qla2xxx */
5408 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5409 struct atio_from_isp *atio, uint8_t ha_locked)
5410 {
5411 struct qla_hw_data *ha = vha->hw;
5412 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5413 int rc;
5414 unsigned long flags = 0;
5415
5416 if (unlikely(tgt == NULL)) {
5417 ql_dbg(ql_dbg_tgt, vha, 0x3064,
5418 "ATIO pkt, but no tgt (ha %p)", ha);
5419 return;
5420 }
5421 /*
5422 * In tgt_stop mode we also should allow all requests to pass.
5423 * Otherwise, some commands can stuck.
5424 */
5425
5426 tgt->atio_irq_cmd_count++;
5427
5428 switch (atio->u.raw.entry_type) {
5429 case ATIO_TYPE7:
5430 if (unlikely(atio->u.isp24.exchange_addr ==
5431 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
5432 ql_dbg(ql_dbg_io, vha, 0x3065,
5433 "qla_target(%d): ATIO_TYPE7 "
5434 "received with UNKNOWN exchange address, "
5435 "sending QUEUE_FULL\n", vha->vp_idx);
5436 if (!ha_locked)
5437 spin_lock_irqsave(&ha->hardware_lock, flags);
5438 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
5439 if (!ha_locked)
5440 spin_unlock_irqrestore(&ha->hardware_lock,
5441 flags);
5442 break;
5443 }
5444
5445 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5446 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5447 atio, ha_locked);
5448 if (rc != 0) {
5449 tgt->atio_irq_cmd_count--;
5450 return;
5451 }
5452 rc = qlt_handle_cmd_for_atio(vha, atio);
5453 } else {
5454 rc = qlt_handle_task_mgmt(vha, atio);
5455 }
5456 if (unlikely(rc != 0)) {
5457 if (!ha_locked)
5458 spin_lock_irqsave(&ha->hardware_lock, flags);
5459 switch (rc) {
5460 case -ENODEV:
5461 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5462 "qla_target: Unable to send command to target\n");
5463 break;
5464 case -EBADF:
5465 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5466 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5467 qlt_send_term_exchange(ha->base_qpair, NULL,
5468 atio, 1, 0);
5469 break;
5470 case -EBUSY:
5471 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5472 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5473 vha->vp_idx);
5474 qlt_send_busy(ha->base_qpair, atio,
5475 tc_sam_status);
5476 break;
5477 default:
5478 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5479 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5480 vha->vp_idx);
5481 qlt_send_busy(ha->base_qpair, atio,
5482 qla_sam_status);
5483 break;
5484 }
5485 if (!ha_locked)
5486 spin_unlock_irqrestore(&ha->hardware_lock,
5487 flags);
5488 }
5489 break;
5490
5491 case IMMED_NOTIFY_TYPE:
5492 {
5493 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5494 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5495 "qla_target(%d): Received ATIO packet %x "
5496 "with error status %x\n", vha->vp_idx,
5497 atio->u.raw.entry_type,
5498 atio->u.isp2x.entry_status);
5499 break;
5500 }
5501 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5502
5503 if (!ha_locked)
5504 spin_lock_irqsave(&ha->hardware_lock, flags);
5505 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5506 if (!ha_locked)
5507 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5508 break;
5509 }
5510
5511 default:
5512 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5513 "qla_target(%d): Received unknown ATIO atio "
5514 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5515 break;
5516 }
5517
5518 tgt->atio_irq_cmd_count--;
5519 }
5520
5521 /* ha->hardware_lock supposed to be held on entry */
5522 /* called via callback from qla2xxx */
5523 static void qlt_response_pkt(struct scsi_qla_host *vha,
5524 struct rsp_que *rsp, response_t *pkt)
5525 {
5526 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5527
5528 if (unlikely(tgt == NULL)) {
5529 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5530 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5531 vha->vp_idx, pkt->entry_type, vha->hw);
5532 return;
5533 }
5534
5535 /*
5536 * In tgt_stop mode we also should allow all requests to pass.
5537 * Otherwise, some commands can stuck.
5538 */
5539
5540 switch (pkt->entry_type) {
5541 case CTIO_CRC2:
5542 case CTIO_TYPE7:
5543 {
5544 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5545 qlt_do_ctio_completion(vha, rsp, entry->handle,
5546 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5547 entry);
5548 break;
5549 }
5550
5551 case ACCEPT_TGT_IO_TYPE:
5552 {
5553 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5554 int rc;
5555 if (atio->u.isp2x.status !=
5556 cpu_to_le16(ATIO_CDB_VALID)) {
5557 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5558 "qla_target(%d): ATIO with error "
5559 "status %x received\n", vha->vp_idx,
5560 le16_to_cpu(atio->u.isp2x.status));
5561 break;
5562 }
5563
5564 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
5565 if (rc != 0)
5566 return;
5567
5568 rc = qlt_handle_cmd_for_atio(vha, atio);
5569 if (unlikely(rc != 0)) {
5570 switch (rc) {
5571 case -ENODEV:
5572 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5573 "qla_target: Unable to send command to target\n");
5574 break;
5575 case -EBADF:
5576 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5577 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5578 qlt_send_term_exchange(rsp->qpair, NULL,
5579 atio, 1, 0);
5580 break;
5581 case -EBUSY:
5582 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5583 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5584 vha->vp_idx);
5585 qlt_send_busy(rsp->qpair, atio,
5586 tc_sam_status);
5587 break;
5588 default:
5589 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5590 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5591 vha->vp_idx);
5592 qlt_send_busy(rsp->qpair, atio,
5593 qla_sam_status);
5594 break;
5595 }
5596 }
5597 }
5598 break;
5599
5600 case CONTINUE_TGT_IO_TYPE:
5601 {
5602 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5603 qlt_do_ctio_completion(vha, rsp, entry->handle,
5604 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5605 entry);
5606 break;
5607 }
5608
5609 case CTIO_A64_TYPE:
5610 {
5611 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5612 qlt_do_ctio_completion(vha, rsp, entry->handle,
5613 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5614 entry);
5615 break;
5616 }
5617
5618 case IMMED_NOTIFY_TYPE:
5619 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5620 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5621 break;
5622
5623 case NOTIFY_ACK_TYPE:
5624 if (tgt->notify_ack_expected > 0) {
5625 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5626 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5627 "NOTIFY_ACK seq %08x status %x\n",
5628 le16_to_cpu(entry->u.isp2x.seq_id),
5629 le16_to_cpu(entry->u.isp2x.status));
5630 tgt->notify_ack_expected--;
5631 if (entry->u.isp2x.status !=
5632 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5633 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5634 "qla_target(%d): NOTIFY_ACK "
5635 "failed %x\n", vha->vp_idx,
5636 le16_to_cpu(entry->u.isp2x.status));
5637 }
5638 } else {
5639 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5640 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5641 vha->vp_idx);
5642 }
5643 break;
5644
5645 case ABTS_RECV_24XX:
5646 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5647 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5648 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5649 break;
5650
5651 case ABTS_RESP_24XX:
5652 if (tgt->abts_resp_expected > 0) {
5653 struct abts_resp_from_24xx_fw *entry =
5654 (struct abts_resp_from_24xx_fw *)pkt;
5655 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5656 "ABTS_RESP_24XX: compl_status %x\n",
5657 entry->compl_status);
5658 tgt->abts_resp_expected--;
5659 if (le16_to_cpu(entry->compl_status) !=
5660 ABTS_RESP_COMPL_SUCCESS) {
5661 if ((entry->error_subcode1 == 0x1E) &&
5662 (entry->error_subcode2 == 0)) {
5663 /*
5664 * We've got a race here: aborted
5665 * exchange not terminated, i.e.
5666 * response for the aborted command was
5667 * sent between the abort request was
5668 * received and processed.
5669 * Unfortunately, the firmware has a
5670 * silly requirement that all aborted
5671 * exchanges must be explicitely
5672 * terminated, otherwise it refuses to
5673 * send responses for the abort
5674 * requests. So, we have to
5675 * (re)terminate the exchange and retry
5676 * the abort response.
5677 */
5678 qlt_24xx_retry_term_exchange(vha,
5679 entry);
5680 } else
5681 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5682 "qla_target(%d): ABTS_RESP_24XX "
5683 "failed %x (subcode %x:%x)",
5684 vha->vp_idx, entry->compl_status,
5685 entry->error_subcode1,
5686 entry->error_subcode2);
5687 }
5688 } else {
5689 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5690 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5691 "received\n", vha->vp_idx);
5692 }
5693 break;
5694
5695 default:
5696 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5697 "qla_target(%d): Received unknown response pkt "
5698 "type %x\n", vha->vp_idx, pkt->entry_type);
5699 break;
5700 }
5701
5702 }
5703
5704 /*
5705 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5706 */
5707 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5708 uint16_t *mailbox)
5709 {
5710 struct qla_hw_data *ha = vha->hw;
5711 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5712 int login_code;
5713
5714 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
5715 return;
5716
5717 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5718 IS_QLA2100(ha))
5719 return;
5720 /*
5721 * In tgt_stop mode we also should allow all requests to pass.
5722 * Otherwise, some commands can stuck.
5723 */
5724
5725
5726 switch (code) {
5727 case MBA_RESET: /* Reset */
5728 case MBA_SYSTEM_ERR: /* System Error */
5729 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5730 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5731 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5732 "qla_target(%d): System error async event %#x "
5733 "occurred", vha->vp_idx, code);
5734 break;
5735 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5736 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5737 break;
5738
5739 case MBA_LOOP_UP:
5740 {
5741 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
5742 "qla_target(%d): Async LOOP_UP occurred "
5743 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5744 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5745 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5746 if (tgt->link_reinit_iocb_pending) {
5747 qlt_send_notify_ack(ha->base_qpair,
5748 (void *)&tgt->link_reinit_iocb,
5749 0, 0, 0, 0, 0, 0);
5750 tgt->link_reinit_iocb_pending = 0;
5751 }
5752 break;
5753 }
5754
5755 case MBA_LIP_OCCURRED:
5756 case MBA_LOOP_DOWN:
5757 case MBA_LIP_RESET:
5758 case MBA_RSCN_UPDATE:
5759 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
5760 "qla_target(%d): Async event %#x occurred "
5761 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5762 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5763 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5764 break;
5765
5766 case MBA_REJECTED_FCP_CMD:
5767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5768 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5769 vha->vp_idx,
5770 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5771 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5772
5773 if (le16_to_cpu(mailbox[3]) == 1) {
5774 /* exchange starvation. */
5775 vha->hw->exch_starvation++;
5776 if (vha->hw->exch_starvation > 5) {
5777 ql_log(ql_log_warn, vha, 0xd03a,
5778 "Exchange starvation-. Resetting RISC\n");
5779
5780 vha->hw->exch_starvation = 0;
5781 if (IS_P3P_TYPE(vha->hw))
5782 set_bit(FCOE_CTX_RESET_NEEDED,
5783 &vha->dpc_flags);
5784 else
5785 set_bit(ISP_ABORT_NEEDED,
5786 &vha->dpc_flags);
5787 qla2xxx_wake_dpc(vha);
5788 }
5789 }
5790 break;
5791
5792 case MBA_PORT_UPDATE:
5793 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5794 "qla_target(%d): Port update async event %#x "
5795 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
5796 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5797 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5798 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5799
5800 login_code = le16_to_cpu(mailbox[2]);
5801 if (login_code == 0x4) {
5802 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5803 "Async MB 2: Got PLOGI Complete\n");
5804 vha->hw->exch_starvation = 0;
5805 } else if (login_code == 0x7)
5806 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5807 "Async MB 2: Port Logged Out\n");
5808 break;
5809 default:
5810 break;
5811 }
5812
5813 }
5814
5815 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5816 uint16_t loop_id)
5817 {
5818 fc_port_t *fcport, *tfcp, *del;
5819 int rc;
5820 unsigned long flags;
5821 u8 newfcport = 0;
5822
5823 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
5824 if (!fcport) {
5825 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5826 "qla_target(%d): Allocation of tmp FC port failed",
5827 vha->vp_idx);
5828 return NULL;
5829 }
5830
5831 fcport->loop_id = loop_id;
5832
5833 rc = qla24xx_gpdb_wait(vha, fcport, 0);
5834 if (rc != QLA_SUCCESS) {
5835 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5836 "qla_target(%d): Failed to retrieve fcport "
5837 "information -- get_port_database() returned %x "
5838 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5839 kfree(fcport);
5840 return NULL;
5841 }
5842
5843 del = NULL;
5844 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5845 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5846
5847 if (tfcp) {
5848 tfcp->d_id = fcport->d_id;
5849 tfcp->port_type = fcport->port_type;
5850 tfcp->supported_classes = fcport->supported_classes;
5851 tfcp->flags |= fcport->flags;
5852 tfcp->scan_state = QLA_FCPORT_FOUND;
5853
5854 del = fcport;
5855 fcport = tfcp;
5856 } else {
5857 if (vha->hw->current_topology == ISP_CFG_F)
5858 fcport->flags |= FCF_FABRIC_DEVICE;
5859
5860 list_add_tail(&fcport->list, &vha->vp_fcports);
5861 if (!IS_SW_RESV_ADDR(fcport->d_id))
5862 vha->fcport_count++;
5863 fcport->login_gen++;
5864 fcport->disc_state = DSC_LOGIN_COMPLETE;
5865 fcport->login_succ = 1;
5866 newfcport = 1;
5867 }
5868
5869 fcport->deleted = 0;
5870 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5871
5872 switch (vha->host->active_mode) {
5873 case MODE_INITIATOR:
5874 case MODE_DUAL:
5875 if (newfcport) {
5876 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
5877 ql_dbg(ql_dbg_disc, vha, 0x20fe,
5878 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5879 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5880 qla24xx_post_upd_fcport_work(vha, fcport);
5881 } else {
5882 ql_dbg(ql_dbg_disc, vha, 0x20ff,
5883 "%s %d %8phC post gpsc fcp_cnt %d\n",
5884 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5885 qla24xx_post_gpsc_work(vha, fcport);
5886 }
5887 }
5888 break;
5889
5890 case MODE_TARGET:
5891 default:
5892 break;
5893 }
5894 if (del)
5895 qla2x00_free_fcport(del);
5896
5897 return fcport;
5898 }
5899
5900 /* Must be called under tgt_mutex */
5901 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
5902 uint8_t *s_id)
5903 {
5904 struct fc_port *sess = NULL;
5905 fc_port_t *fcport = NULL;
5906 int rc, global_resets;
5907 uint16_t loop_id = 0;
5908
5909 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5910 /*
5911 * This is Domain Controller, so it should be
5912 * OK to drop SCSI commands from it.
5913 */
5914 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5915 "Unable to find initiator with S_ID %x:%x:%x",
5916 s_id[0], s_id[1], s_id[2]);
5917 return NULL;
5918 }
5919
5920 mutex_lock(&vha->vha_tgt.tgt_mutex);
5921
5922 retry:
5923 global_resets =
5924 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
5925
5926 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5927 if (rc != 0) {
5928 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5929
5930 ql_log(ql_log_info, vha, 0xf071,
5931 "qla_target(%d): Unable to find "
5932 "initiator with S_ID %x:%x:%x",
5933 vha->vp_idx, s_id[0], s_id[1],
5934 s_id[2]);
5935
5936 if (rc == -ENOENT) {
5937 qlt_port_logo_t logo;
5938 sid_to_portid(s_id, &logo.id);
5939 logo.cmd_count = 1;
5940 qlt_send_first_logo(vha, &logo);
5941 }
5942
5943 return NULL;
5944 }
5945
5946 fcport = qlt_get_port_database(vha, loop_id);
5947 if (!fcport) {
5948 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5949 return NULL;
5950 }
5951
5952 if (global_resets !=
5953 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
5954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5955 "qla_target(%d): global reset during session discovery "
5956 "(counter was %d, new %d), retrying", vha->vp_idx,
5957 global_resets,
5958 atomic_read(&vha->vha_tgt.
5959 qla_tgt->tgt_global_resets_count));
5960 goto retry;
5961 }
5962
5963 sess = qlt_create_sess(vha, fcport, true);
5964
5965 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5966
5967 return sess;
5968 }
5969
5970 static void qlt_abort_work(struct qla_tgt *tgt,
5971 struct qla_tgt_sess_work_param *prm)
5972 {
5973 struct scsi_qla_host *vha = tgt->vha;
5974 struct qla_hw_data *ha = vha->hw;
5975 struct fc_port *sess = NULL;
5976 unsigned long flags = 0, flags2 = 0;
5977 uint32_t be_s_id;
5978 uint8_t s_id[3];
5979 int rc;
5980
5981 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5982
5983 if (tgt->tgt_stop)
5984 goto out_term2;
5985
5986 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5987 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5988 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5989
5990 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5991 (unsigned char *)&be_s_id);
5992 if (!sess) {
5993 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5994
5995 sess = qlt_make_local_sess(vha, s_id);
5996 /* sess has got an extra creation ref */
5997
5998 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5999 if (!sess)
6000 goto out_term2;
6001 } else {
6002 if (sess->deleted) {
6003 sess = NULL;
6004 goto out_term2;
6005 }
6006
6007 if (!kref_get_unless_zero(&sess->sess_kref)) {
6008 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
6009 "%s: kref_get fail %8phC \n",
6010 __func__, sess->port_name);
6011 sess = NULL;
6012 goto out_term2;
6013 }
6014 }
6015
6016 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
6017 ha->tgt.tgt_ops->put_sess(sess);
6018 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6019
6020 if (rc != 0)
6021 goto out_term;
6022 return;
6023
6024 out_term2:
6025 if (sess)
6026 ha->tgt.tgt_ops->put_sess(sess);
6027 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6028
6029 out_term:
6030 spin_lock_irqsave(&ha->hardware_lock, flags);
6031 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6032 FCP_TMF_REJECTED, false);
6033 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6034 }
6035
6036 static void qlt_tmr_work(struct qla_tgt *tgt,
6037 struct qla_tgt_sess_work_param *prm)
6038 {
6039 struct atio_from_isp *a = &prm->tm_iocb2;
6040 struct scsi_qla_host *vha = tgt->vha;
6041 struct qla_hw_data *ha = vha->hw;
6042 struct fc_port *sess = NULL;
6043 unsigned long flags;
6044 uint8_t *s_id = NULL; /* to hide compiler warnings */
6045 int rc;
6046 u64 unpacked_lun;
6047 int fn;
6048 void *iocb;
6049
6050 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6051
6052 if (tgt->tgt_stop)
6053 goto out_term2;
6054
6055 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6056 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6057 if (!sess) {
6058 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6059
6060 sess = qlt_make_local_sess(vha, s_id);
6061 /* sess has got an extra creation ref */
6062
6063 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6064 if (!sess)
6065 goto out_term2;
6066 } else {
6067 if (sess->deleted) {
6068 sess = NULL;
6069 goto out_term2;
6070 }
6071
6072 if (!kref_get_unless_zero(&sess->sess_kref)) {
6073 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
6074 "%s: kref_get fail %8phC\n",
6075 __func__, sess->port_name);
6076 sess = NULL;
6077 goto out_term2;
6078 }
6079 }
6080
6081 iocb = a;
6082 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
6083 unpacked_lun =
6084 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
6085
6086 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
6087 ha->tgt.tgt_ops->put_sess(sess);
6088 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6089
6090 if (rc != 0)
6091 goto out_term;
6092 return;
6093
6094 out_term2:
6095 if (sess)
6096 ha->tgt.tgt_ops->put_sess(sess);
6097 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6098 out_term:
6099 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
6100 }
6101
6102 static void qlt_sess_work_fn(struct work_struct *work)
6103 {
6104 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6105 struct scsi_qla_host *vha = tgt->vha;
6106 unsigned long flags;
6107
6108 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6109
6110 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6111 while (!list_empty(&tgt->sess_works_list)) {
6112 struct qla_tgt_sess_work_param *prm = list_entry(
6113 tgt->sess_works_list.next, typeof(*prm),
6114 sess_works_list_entry);
6115
6116 /*
6117 * This work can be scheduled on several CPUs at time, so we
6118 * must delete the entry to eliminate double processing
6119 */
6120 list_del(&prm->sess_works_list_entry);
6121
6122 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6123
6124 switch (prm->type) {
6125 case QLA_TGT_SESS_WORK_ABORT:
6126 qlt_abort_work(tgt, prm);
6127 break;
6128 case QLA_TGT_SESS_WORK_TM:
6129 qlt_tmr_work(tgt, prm);
6130 break;
6131 default:
6132 BUG_ON(1);
6133 break;
6134 }
6135
6136 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6137
6138 kfree(prm);
6139 }
6140 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6141 }
6142
6143 /* Must be called under tgt_host_action_mutex */
6144 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6145 {
6146 struct qla_tgt *tgt;
6147 int rc, i;
6148 struct qla_qpair_hint *h;
6149
6150 if (!QLA_TGT_MODE_ENABLED())
6151 return 0;
6152
6153 if (!IS_TGT_MODE_CAPABLE(ha)) {
6154 ql_log(ql_log_warn, base_vha, 0xe070,
6155 "This adapter does not support target mode.\n");
6156 return 0;
6157 }
6158
6159 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
6160 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
6161
6162 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
6163
6164 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6165 if (!tgt) {
6166 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6167 "Unable to allocate struct qla_tgt\n");
6168 return -ENOMEM;
6169 }
6170
6171 tgt->qphints = kzalloc((ha->max_qpairs + 1) *
6172 sizeof(struct qla_qpair_hint), GFP_KERNEL);
6173 if (!tgt->qphints) {
6174 kfree(tgt);
6175 ql_log(ql_log_warn, base_vha, 0x0197,
6176 "Unable to allocate qpair hints.\n");
6177 return -ENOMEM;
6178 }
6179
6180 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6181 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6182
6183 rc = btree_init64(&tgt->lun_qpair_map);
6184 if (rc) {
6185 kfree(tgt->qphints);
6186 kfree(tgt);
6187 ql_log(ql_log_info, base_vha, 0x0198,
6188 "Unable to initialize lun_qpair_map btree\n");
6189 return -EIO;
6190 }
6191 h = &tgt->qphints[0];
6192 h->qpair = ha->base_qpair;
6193 INIT_LIST_HEAD(&h->hint_elem);
6194 h->cpuid = ha->base_qpair->cpuid;
6195 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6196
6197 for (i = 0; i < ha->max_qpairs; i++) {
6198 unsigned long flags;
6199
6200 struct qla_qpair *qpair = ha->queue_pair_map[i];
6201 h = &tgt->qphints[i + 1];
6202 INIT_LIST_HEAD(&h->hint_elem);
6203 if (qpair) {
6204 h->qpair = qpair;
6205 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6206 list_add_tail(&h->hint_elem, &qpair->hints_list);
6207 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6208 h->cpuid = qpair->cpuid;
6209 }
6210 }
6211
6212 tgt->ha = ha;
6213 tgt->vha = base_vha;
6214 init_waitqueue_head(&tgt->waitQ);
6215 INIT_LIST_HEAD(&tgt->del_sess_list);
6216 spin_lock_init(&tgt->sess_work_lock);
6217 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6218 INIT_LIST_HEAD(&tgt->sess_works_list);
6219 atomic_set(&tgt->tgt_global_resets_count, 0);
6220
6221 base_vha->vha_tgt.qla_tgt = tgt;
6222
6223 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6224 "qla_target(%d): using 64 Bit PCI addressing",
6225 base_vha->vp_idx);
6226 /* 3 is reserved */
6227 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6228
6229 mutex_lock(&qla_tgt_mutex);
6230 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6231 mutex_unlock(&qla_tgt_mutex);
6232
6233 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6234 ha->tgt.tgt_ops->add_target(base_vha);
6235
6236 return 0;
6237 }
6238
6239 /* Must be called under tgt_host_action_mutex */
6240 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6241 {
6242 if (!vha->vha_tgt.qla_tgt)
6243 return 0;
6244
6245 if (vha->fc_vport) {
6246 qlt_release(vha->vha_tgt.qla_tgt);
6247 return 0;
6248 }
6249
6250 /* free left over qfull cmds */
6251 qlt_init_term_exchange(vha);
6252
6253 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6254 vha->host_no, ha);
6255 qlt_release(vha->vha_tgt.qla_tgt);
6256
6257 return 0;
6258 }
6259
6260 void qlt_remove_target_resources(struct qla_hw_data *ha)
6261 {
6262 struct scsi_qla_host *node;
6263 u32 key = 0;
6264
6265 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6266 btree_remove32(&ha->tgt.host_map, key);
6267
6268 btree_destroy32(&ha->tgt.host_map);
6269 }
6270
6271 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6272 unsigned char *b)
6273 {
6274 int i;
6275
6276 pr_debug("qla2xxx HW vha->node_name: ");
6277 for (i = 0; i < WWN_SIZE; i++)
6278 pr_debug("%02x ", vha->node_name[i]);
6279 pr_debug("\n");
6280 pr_debug("qla2xxx HW vha->port_name: ");
6281 for (i = 0; i < WWN_SIZE; i++)
6282 pr_debug("%02x ", vha->port_name[i]);
6283 pr_debug("\n");
6284
6285 pr_debug("qla2xxx passed configfs WWPN: ");
6286 put_unaligned_be64(wwpn, b);
6287 for (i = 0; i < WWN_SIZE; i++)
6288 pr_debug("%02x ", b[i]);
6289 pr_debug("\n");
6290 }
6291
6292 /**
6293 * qla_tgt_lport_register - register lport with external module
6294 *
6295 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6296 * @wwpn: Passwd FC target WWPN
6297 * @callback: lport initialization callback for tcm_qla2xxx code
6298 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6299 */
6300 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6301 u64 npiv_wwpn, u64 npiv_wwnn,
6302 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6303 {
6304 struct qla_tgt *tgt;
6305 struct scsi_qla_host *vha;
6306 struct qla_hw_data *ha;
6307 struct Scsi_Host *host;
6308 unsigned long flags;
6309 int rc;
6310 u8 b[WWN_SIZE];
6311
6312 mutex_lock(&qla_tgt_mutex);
6313 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6314 vha = tgt->vha;
6315 ha = vha->hw;
6316
6317 host = vha->host;
6318 if (!host)
6319 continue;
6320
6321 if (!(host->hostt->supported_mode & MODE_TARGET))
6322 continue;
6323
6324 spin_lock_irqsave(&ha->hardware_lock, flags);
6325 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6326 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6327 host->host_no);
6328 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6329 continue;
6330 }
6331 if (tgt->tgt_stop) {
6332 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6333 host->host_no);
6334 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6335 continue;
6336 }
6337 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6338
6339 if (!scsi_host_get(host)) {
6340 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6341 "Unable to scsi_host_get() for"
6342 " qla2xxx scsi_host\n");
6343 continue;
6344 }
6345 qlt_lport_dump(vha, phys_wwpn, b);
6346
6347 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6348 scsi_host_put(host);
6349 continue;
6350 }
6351 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6352 if (rc != 0)
6353 scsi_host_put(host);
6354
6355 mutex_unlock(&qla_tgt_mutex);
6356 return rc;
6357 }
6358 mutex_unlock(&qla_tgt_mutex);
6359
6360 return -ENODEV;
6361 }
6362 EXPORT_SYMBOL(qlt_lport_register);
6363
6364 /**
6365 * qla_tgt_lport_deregister - Degister lport
6366 *
6367 * @vha: Registered scsi_qla_host pointer
6368 */
6369 void qlt_lport_deregister(struct scsi_qla_host *vha)
6370 {
6371 struct qla_hw_data *ha = vha->hw;
6372 struct Scsi_Host *sh = vha->host;
6373 /*
6374 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6375 */
6376 vha->vha_tgt.target_lport_ptr = NULL;
6377 ha->tgt.tgt_ops = NULL;
6378 /*
6379 * Release the Scsi_Host reference for the underlying qla2xxx host
6380 */
6381 scsi_host_put(sh);
6382 }
6383 EXPORT_SYMBOL(qlt_lport_deregister);
6384
6385 /* Must be called under HW lock */
6386 static void qlt_set_mode(struct scsi_qla_host *vha)
6387 {
6388 switch (ql2x_ini_mode) {
6389 case QLA2XXX_INI_MODE_DISABLED:
6390 case QLA2XXX_INI_MODE_EXCLUSIVE:
6391 vha->host->active_mode = MODE_TARGET;
6392 break;
6393 case QLA2XXX_INI_MODE_ENABLED:
6394 vha->host->active_mode = MODE_UNKNOWN;
6395 break;
6396 case QLA2XXX_INI_MODE_DUAL:
6397 vha->host->active_mode = MODE_DUAL;
6398 break;
6399 default:
6400 break;
6401 }
6402 }
6403
6404 /* Must be called under HW lock */
6405 static void qlt_clear_mode(struct scsi_qla_host *vha)
6406 {
6407 switch (ql2x_ini_mode) {
6408 case QLA2XXX_INI_MODE_DISABLED:
6409 vha->host->active_mode = MODE_UNKNOWN;
6410 break;
6411 case QLA2XXX_INI_MODE_EXCLUSIVE:
6412 vha->host->active_mode = MODE_INITIATOR;
6413 break;
6414 case QLA2XXX_INI_MODE_ENABLED:
6415 case QLA2XXX_INI_MODE_DUAL:
6416 vha->host->active_mode = MODE_INITIATOR;
6417 break;
6418 default:
6419 break;
6420 }
6421 }
6422
6423 /*
6424 * qla_tgt_enable_vha - NO LOCK HELD
6425 *
6426 * host_reset, bring up w/ Target Mode Enabled
6427 */
6428 void
6429 qlt_enable_vha(struct scsi_qla_host *vha)
6430 {
6431 struct qla_hw_data *ha = vha->hw;
6432 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6433 unsigned long flags;
6434 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6435
6436 if (!tgt) {
6437 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6438 "Unable to locate qla_tgt pointer from"
6439 " struct qla_hw_data\n");
6440 dump_stack();
6441 return;
6442 }
6443
6444 spin_lock_irqsave(&ha->hardware_lock, flags);
6445 tgt->tgt_stopped = 0;
6446 qlt_set_mode(vha);
6447 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6448
6449 if (vha->vp_idx) {
6450 qla24xx_disable_vp(vha);
6451 qla24xx_enable_vp(vha);
6452 } else {
6453 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6454 qla2xxx_wake_dpc(base_vha);
6455 qla2x00_wait_for_hba_online(base_vha);
6456 }
6457 }
6458 EXPORT_SYMBOL(qlt_enable_vha);
6459
6460 /*
6461 * qla_tgt_disable_vha - NO LOCK HELD
6462 *
6463 * Disable Target Mode and reset the adapter
6464 */
6465 static void qlt_disable_vha(struct scsi_qla_host *vha)
6466 {
6467 struct qla_hw_data *ha = vha->hw;
6468 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6469 unsigned long flags;
6470
6471 if (!tgt) {
6472 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6473 "Unable to locate qla_tgt pointer from"
6474 " struct qla_hw_data\n");
6475 dump_stack();
6476 return;
6477 }
6478
6479 spin_lock_irqsave(&ha->hardware_lock, flags);
6480 qlt_clear_mode(vha);
6481 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6482
6483 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6484 qla2xxx_wake_dpc(vha);
6485 qla2x00_wait_for_hba_online(vha);
6486 }
6487
6488 /*
6489 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6490 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6491 * members.
6492 */
6493 void
6494 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6495 {
6496 vha->vha_tgt.qla_tgt = NULL;
6497
6498 mutex_init(&vha->vha_tgt.tgt_mutex);
6499 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6500
6501 qlt_clear_mode(vha);
6502
6503 /*
6504 * NOTE: Currently the value is kept the same for <24xx and
6505 * >=24xx ISPs. If it is necessary to change it,
6506 * the check should be added for specific ISPs,
6507 * assigning the value appropriately.
6508 */
6509 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6510
6511 qlt_add_target(ha, vha);
6512 }
6513
6514 u8
6515 qlt_rff_id(struct scsi_qla_host *vha)
6516 {
6517 u8 fc4_feature = 0;
6518 /*
6519 * FC-4 Feature bit 0 indicates target functionality to the name server.
6520 */
6521 if (qla_tgt_mode_enabled(vha)) {
6522 fc4_feature = BIT_0;
6523 } else if (qla_ini_mode_enabled(vha)) {
6524 fc4_feature = BIT_1;
6525 } else if (qla_dual_mode_enabled(vha))
6526 fc4_feature = BIT_0 | BIT_1;
6527
6528 return fc4_feature;
6529 }
6530
6531 /*
6532 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6533 * @ha: HA context
6534 *
6535 * Beginning of ATIO ring has initialization control block already built
6536 * by nvram config routine.
6537 *
6538 * Returns 0 on success.
6539 */
6540 void
6541 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6542 {
6543 struct qla_hw_data *ha = vha->hw;
6544 uint16_t cnt;
6545 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6546
6547 if (qla_ini_mode_enabled(vha))
6548 return;
6549
6550 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6551 pkt->u.raw.signature = ATIO_PROCESSED;
6552 pkt++;
6553 }
6554
6555 }
6556
6557 /*
6558 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6559 * @ha: SCSI driver HA context
6560 */
6561 void
6562 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6563 {
6564 struct qla_hw_data *ha = vha->hw;
6565 struct atio_from_isp *pkt;
6566 int cnt, i;
6567
6568 if (!ha->flags.fw_started)
6569 return;
6570
6571 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6572 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
6573 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6574 cnt = pkt->u.raw.entry_count;
6575
6576 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6577 /*
6578 * This packet is corrupted. The header + payload
6579 * can not be trusted. There is no point in passing
6580 * it further up.
6581 */
6582 ql_log(ql_log_warn, vha, 0xd03c,
6583 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6584 pkt->u.isp24.fcp_hdr.s_id,
6585 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6586 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6587
6588 adjust_corrupted_atio(pkt);
6589 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6590 ha_locked, 0);
6591 } else {
6592 qlt_24xx_atio_pkt_all_vps(vha,
6593 (struct atio_from_isp *)pkt, ha_locked);
6594 }
6595
6596 for (i = 0; i < cnt; i++) {
6597 ha->tgt.atio_ring_index++;
6598 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6599 ha->tgt.atio_ring_index = 0;
6600 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6601 } else
6602 ha->tgt.atio_ring_ptr++;
6603
6604 pkt->u.raw.signature = ATIO_PROCESSED;
6605 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6606 }
6607 wmb();
6608 }
6609
6610 /* Adjust ring index */
6611 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6612 }
6613
6614 void
6615 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6616 {
6617 struct qla_hw_data *ha = vha->hw;
6618 struct qla_msix_entry *msix = &ha->msix_entries[2];
6619 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6620
6621 if (!QLA_TGT_MODE_ENABLED())
6622 return;
6623
6624 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6625 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6626 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6627
6628 if (ha->flags.msix_enabled) {
6629 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6630 if (IS_QLA2071(ha)) {
6631 /* 4 ports Baker: Enable Interrupt Handshake */
6632 icb->msix_atio = 0;
6633 icb->firmware_options_2 |= BIT_26;
6634 } else {
6635 icb->msix_atio = cpu_to_le16(msix->entry);
6636 icb->firmware_options_2 &= ~BIT_26;
6637 }
6638 ql_dbg(ql_dbg_init, vha, 0xf072,
6639 "Registering ICB vector 0x%x for atio que.\n",
6640 msix->entry);
6641 }
6642 } else {
6643 /* INTx|MSI */
6644 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6645 icb->msix_atio = 0;
6646 icb->firmware_options_2 |= BIT_26;
6647 ql_dbg(ql_dbg_init, vha, 0xf072,
6648 "%s: Use INTx for ATIOQ.\n", __func__);
6649 }
6650 }
6651 }
6652
6653 void
6654 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6655 {
6656 struct qla_hw_data *ha = vha->hw;
6657 u32 tmp;
6658
6659 if (!QLA_TGT_MODE_ENABLED())
6660 return;
6661
6662 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6663 if (!ha->tgt.saved_set) {
6664 /* We save only once */
6665 ha->tgt.saved_exchange_count = nv->exchange_count;
6666 ha->tgt.saved_firmware_options_1 =
6667 nv->firmware_options_1;
6668 ha->tgt.saved_firmware_options_2 =
6669 nv->firmware_options_2;
6670 ha->tgt.saved_firmware_options_3 =
6671 nv->firmware_options_3;
6672 ha->tgt.saved_set = 1;
6673 }
6674
6675 if (qla_tgt_mode_enabled(vha))
6676 nv->exchange_count = cpu_to_le16(0xFFFF);
6677 else /* dual */
6678 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
6679
6680 /* Enable target mode */
6681 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6682
6683 /* Disable ini mode, if requested */
6684 if (qla_tgt_mode_enabled(vha))
6685 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6686
6687 /* Disable Full Login after LIP */
6688 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6689 /* Enable initial LIP */
6690 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6691 if (ql2xtgt_tape_enable)
6692 /* Enable FC Tape support */
6693 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6694 else
6695 /* Disable FC Tape support */
6696 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6697
6698 /* Disable Full Login after LIP */
6699 nv->host_p &= cpu_to_le32(~BIT_10);
6700
6701 /*
6702 * clear BIT 15 explicitly as we have seen at least
6703 * a couple of instances where this was set and this
6704 * was causing the firmware to not be initialized.
6705 */
6706 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6707 /* Enable target PRLI control */
6708 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6709
6710 if (IS_QLA25XX(ha)) {
6711 /* Change Loop-prefer to Pt-Pt */
6712 tmp = ~(BIT_4|BIT_5|BIT_6);
6713 nv->firmware_options_2 &= cpu_to_le32(tmp);
6714 tmp = P2P << 4;
6715 nv->firmware_options_2 |= cpu_to_le32(tmp);
6716 }
6717 } else {
6718 if (ha->tgt.saved_set) {
6719 nv->exchange_count = ha->tgt.saved_exchange_count;
6720 nv->firmware_options_1 =
6721 ha->tgt.saved_firmware_options_1;
6722 nv->firmware_options_2 =
6723 ha->tgt.saved_firmware_options_2;
6724 nv->firmware_options_3 =
6725 ha->tgt.saved_firmware_options_3;
6726 }
6727 return;
6728 }
6729
6730 if (ha->base_qpair->enable_class_2) {
6731 if (vha->flags.init_done)
6732 fc_host_supported_classes(vha->host) =
6733 FC_COS_CLASS2 | FC_COS_CLASS3;
6734
6735 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6736 } else {
6737 if (vha->flags.init_done)
6738 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6739
6740 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6741 }
6742 }
6743
6744 void
6745 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6746 struct init_cb_24xx *icb)
6747 {
6748 struct qla_hw_data *ha = vha->hw;
6749
6750 if (!QLA_TGT_MODE_ENABLED())
6751 return;
6752
6753 if (ha->tgt.node_name_set) {
6754 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6755 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6756 }
6757
6758 /* disable ZIO at start time. */
6759 if (!vha->flags.init_done) {
6760 uint32_t tmp;
6761 tmp = le32_to_cpu(icb->firmware_options_2);
6762 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6763 icb->firmware_options_2 = cpu_to_le32(tmp);
6764 }
6765 }
6766
6767 void
6768 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6769 {
6770 struct qla_hw_data *ha = vha->hw;
6771 u32 tmp;
6772
6773 if (!QLA_TGT_MODE_ENABLED())
6774 return;
6775
6776 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6777 if (!ha->tgt.saved_set) {
6778 /* We save only once */
6779 ha->tgt.saved_exchange_count = nv->exchange_count;
6780 ha->tgt.saved_firmware_options_1 =
6781 nv->firmware_options_1;
6782 ha->tgt.saved_firmware_options_2 =
6783 nv->firmware_options_2;
6784 ha->tgt.saved_firmware_options_3 =
6785 nv->firmware_options_3;
6786 ha->tgt.saved_set = 1;
6787 }
6788
6789 if (qla_tgt_mode_enabled(vha))
6790 nv->exchange_count = cpu_to_le16(0xFFFF);
6791 else /* dual */
6792 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
6793
6794 /* Enable target mode */
6795 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6796
6797 /* Disable ini mode, if requested */
6798 if (qla_tgt_mode_enabled(vha))
6799 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6800 /* Disable Full Login after LIP */
6801 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6802 /* Enable initial LIP */
6803 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6804 /*
6805 * clear BIT 15 explicitly as we have seen at
6806 * least a couple of instances where this was set
6807 * and this was causing the firmware to not be
6808 * initialized.
6809 */
6810 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6811 if (ql2xtgt_tape_enable)
6812 /* Enable FC tape support */
6813 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6814 else
6815 /* Disable FC tape support */
6816 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6817
6818 /* Disable Full Login after LIP */
6819 nv->host_p &= cpu_to_le32(~BIT_10);
6820 /* Enable target PRLI control */
6821 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6822
6823 /* Change Loop-prefer to Pt-Pt */
6824 tmp = ~(BIT_4|BIT_5|BIT_6);
6825 nv->firmware_options_2 &= cpu_to_le32(tmp);
6826 tmp = P2P << 4;
6827 nv->firmware_options_2 |= cpu_to_le32(tmp);
6828 } else {
6829 if (ha->tgt.saved_set) {
6830 nv->exchange_count = ha->tgt.saved_exchange_count;
6831 nv->firmware_options_1 =
6832 ha->tgt.saved_firmware_options_1;
6833 nv->firmware_options_2 =
6834 ha->tgt.saved_firmware_options_2;
6835 nv->firmware_options_3 =
6836 ha->tgt.saved_firmware_options_3;
6837 }
6838 return;
6839 }
6840
6841 if (ha->base_qpair->enable_class_2) {
6842 if (vha->flags.init_done)
6843 fc_host_supported_classes(vha->host) =
6844 FC_COS_CLASS2 | FC_COS_CLASS3;
6845
6846 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6847 } else {
6848 if (vha->flags.init_done)
6849 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6850
6851 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6852 }
6853 }
6854
6855 void
6856 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6857 struct init_cb_81xx *icb)
6858 {
6859 struct qla_hw_data *ha = vha->hw;
6860
6861 if (!QLA_TGT_MODE_ENABLED())
6862 return;
6863
6864 if (ha->tgt.node_name_set) {
6865 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6866 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6867 }
6868
6869 /* disable ZIO at start time. */
6870 if (!vha->flags.init_done) {
6871 uint32_t tmp;
6872 tmp = le32_to_cpu(icb->firmware_options_2);
6873 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6874 icb->firmware_options_2 = cpu_to_le32(tmp);
6875 }
6876
6877 }
6878
6879 void
6880 qlt_83xx_iospace_config(struct qla_hw_data *ha)
6881 {
6882 if (!QLA_TGT_MODE_ENABLED())
6883 return;
6884
6885 ha->msix_count += 1; /* For ATIO Q */
6886 }
6887
6888
6889 void
6890 qlt_modify_vp_config(struct scsi_qla_host *vha,
6891 struct vp_config_entry_24xx *vpmod)
6892 {
6893 /* enable target mode. Bit5 = 1 => disable */
6894 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
6895 vpmod->options_idx1 &= ~BIT_5;
6896
6897 /* Disable ini mode, if requested. bit4 = 1 => disable */
6898 if (qla_tgt_mode_enabled(vha))
6899 vpmod->options_idx1 &= ~BIT_4;
6900 }
6901
6902 void
6903 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6904 {
6905 int rc;
6906
6907 if (!QLA_TGT_MODE_ENABLED())
6908 return;
6909
6910 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6911 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6912 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6913 } else {
6914 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6915 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6916 }
6917
6918 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6919 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
6920
6921 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6922 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6923 qlt_unknown_atio_work_fn);
6924
6925 qlt_clear_mode(base_vha);
6926
6927 rc = btree_init32(&ha->tgt.host_map);
6928 if (rc)
6929 ql_log(ql_log_info, base_vha, 0xd03d,
6930 "Unable to initialize ha->host_map btree\n");
6931
6932 qlt_update_vp_map(base_vha, SET_VP_IDX);
6933 }
6934
6935 irqreturn_t
6936 qla83xx_msix_atio_q(int irq, void *dev_id)
6937 {
6938 struct rsp_que *rsp;
6939 scsi_qla_host_t *vha;
6940 struct qla_hw_data *ha;
6941 unsigned long flags;
6942
6943 rsp = (struct rsp_que *) dev_id;
6944 ha = rsp->hw;
6945 vha = pci_get_drvdata(ha->pdev);
6946
6947 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6948
6949 qlt_24xx_process_atio_queue(vha, 0);
6950
6951 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6952
6953 return IRQ_HANDLED;
6954 }
6955
6956 static void
6957 qlt_handle_abts_recv_work(struct work_struct *work)
6958 {
6959 struct qla_tgt_sess_op *op = container_of(work,
6960 struct qla_tgt_sess_op, work);
6961 scsi_qla_host_t *vha = op->vha;
6962 struct qla_hw_data *ha = vha->hw;
6963 unsigned long flags;
6964
6965 if (qla2x00_reset_active(vha) ||
6966 (op->chip_reset != ha->base_qpair->chip_reset))
6967 return;
6968
6969 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6970 qlt_24xx_process_atio_queue(vha, 0);
6971 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6972
6973 spin_lock_irqsave(&ha->hardware_lock, flags);
6974 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
6975 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6976
6977 kfree(op);
6978 }
6979
6980 void
6981 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
6982 response_t *pkt)
6983 {
6984 struct qla_tgt_sess_op *op;
6985
6986 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6987
6988 if (!op) {
6989 /* do not reach for ATIO queue here. This is best effort err
6990 * recovery at this point.
6991 */
6992 qlt_response_pkt_all_vps(vha, rsp, pkt);
6993 return;
6994 }
6995
6996 memcpy(&op->atio, pkt, sizeof(*pkt));
6997 op->vha = vha;
6998 op->chip_reset = vha->hw->base_qpair->chip_reset;
6999 op->rsp = rsp;
7000 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7001 queue_work(qla_tgt_wq, &op->work);
7002 return;
7003 }
7004
7005 int
7006 qlt_mem_alloc(struct qla_hw_data *ha)
7007 {
7008 if (!QLA_TGT_MODE_ENABLED())
7009 return 0;
7010
7011 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
7012 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
7013 if (!ha->tgt.tgt_vp_map)
7014 return -ENOMEM;
7015
7016 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7017 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7018 &ha->tgt.atio_dma, GFP_KERNEL);
7019 if (!ha->tgt.atio_ring) {
7020 kfree(ha->tgt.tgt_vp_map);
7021 return -ENOMEM;
7022 }
7023 return 0;
7024 }
7025
7026 void
7027 qlt_mem_free(struct qla_hw_data *ha)
7028 {
7029 if (!QLA_TGT_MODE_ENABLED())
7030 return;
7031
7032 if (ha->tgt.atio_ring) {
7033 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7034 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7035 ha->tgt.atio_dma);
7036 }
7037 kfree(ha->tgt.tgt_vp_map);
7038 }
7039
7040 /* vport_slock to be held by the caller */
7041 void
7042 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7043 {
7044 void *slot;
7045 u32 key;
7046 int rc;
7047
7048 if (!QLA_TGT_MODE_ENABLED())
7049 return;
7050
7051 key = vha->d_id.b24;
7052
7053 switch (cmd) {
7054 case SET_VP_IDX:
7055 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7056 break;
7057 case SET_AL_PA:
7058 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7059 if (!slot) {
7060 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
7061 "Save vha in host_map %p %06x\n", vha, key);
7062 rc = btree_insert32(&vha->hw->tgt.host_map,
7063 key, vha, GFP_ATOMIC);
7064 if (rc)
7065 ql_log(ql_log_info, vha, 0xd03e,
7066 "Unable to insert s_id into host_map: %06x\n",
7067 key);
7068 return;
7069 }
7070 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7071 "replace existing vha in host_map %p %06x\n", vha, key);
7072 btree_update32(&vha->hw->tgt.host_map, key, vha);
7073 break;
7074 case RESET_VP_IDX:
7075 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7076 break;
7077 case RESET_AL_PA:
7078 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
7079 "clear vha in host_map %p %06x\n", vha, key);
7080 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7081 if (slot)
7082 btree_remove32(&vha->hw->tgt.host_map, key);
7083 vha->d_id.b24 = 0;
7084 break;
7085 }
7086 }
7087
7088 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7089 {
7090
7091 if (!vha->d_id.b24) {
7092 vha->d_id = id;
7093 qlt_update_vp_map(vha, SET_AL_PA);
7094 } else if (vha->d_id.b24 != id.b24) {
7095 qlt_update_vp_map(vha, RESET_AL_PA);
7096 vha->d_id = id;
7097 qlt_update_vp_map(vha, SET_AL_PA);
7098 }
7099 }
7100
7101 static int __init qlt_parse_ini_mode(void)
7102 {
7103 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7104 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7105 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7106 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7107 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7108 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
7109 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7110 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
7111 else
7112 return false;
7113
7114 return true;
7115 }
7116
7117 int __init qlt_init(void)
7118 {
7119 int ret;
7120
7121 if (!qlt_parse_ini_mode()) {
7122 ql_log(ql_log_fatal, NULL, 0xe06b,
7123 "qlt_parse_ini_mode() failed\n");
7124 return -EINVAL;
7125 }
7126
7127 if (!QLA_TGT_MODE_ENABLED())
7128 return 0;
7129
7130 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7131 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7132 qla_tgt_mgmt_cmd), 0, NULL);
7133 if (!qla_tgt_mgmt_cmd_cachep) {
7134 ql_log(ql_log_fatal, NULL, 0xd04b,
7135 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
7136 return -ENOMEM;
7137 }
7138
7139 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
7140 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7141 0, NULL);
7142
7143 if (!qla_tgt_plogi_cachep) {
7144 ql_log(ql_log_fatal, NULL, 0xe06d,
7145 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7146 ret = -ENOMEM;
7147 goto out_mgmt_cmd_cachep;
7148 }
7149
7150 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7151 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7152 if (!qla_tgt_mgmt_cmd_mempool) {
7153 ql_log(ql_log_fatal, NULL, 0xe06e,
7154 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7155 ret = -ENOMEM;
7156 goto out_plogi_cachep;
7157 }
7158
7159 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7160 if (!qla_tgt_wq) {
7161 ql_log(ql_log_fatal, NULL, 0xe06f,
7162 "alloc_workqueue for qla_tgt_wq failed\n");
7163 ret = -ENOMEM;
7164 goto out_cmd_mempool;
7165 }
7166 /*
7167 * Return 1 to signal that initiator-mode is being disabled
7168 */
7169 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7170
7171 out_cmd_mempool:
7172 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7173 out_plogi_cachep:
7174 kmem_cache_destroy(qla_tgt_plogi_cachep);
7175 out_mgmt_cmd_cachep:
7176 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7177 return ret;
7178 }
7179
7180 void qlt_exit(void)
7181 {
7182 if (!QLA_TGT_MODE_ENABLED())
7183 return;
7184
7185 destroy_workqueue(qla_tgt_wq);
7186 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7187 kmem_cache_destroy(qla_tgt_plogi_cachep);
7188 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7189 }
Linux with added FPC-III support