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Merge branch 'akpm' (patches from Andrew)
[mirror_ubuntu-focal-kernel.git] / drivers / scsi / qla2xxx / qla_target.c
1 /*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/types.h>
29 #include <linux/blkdev.h>
30 #include <linux/interrupt.h>
31 #include <linux/pci.h>
32 #include <linux/delay.h>
33 #include <linux/list.h>
34 #include <linux/workqueue.h>
35 #include <asm/unaligned.h>
36 #include <scsi/scsi.h>
37 #include <scsi/scsi_host.h>
38 #include <scsi/scsi_tcq.h>
39 #include <target/target_core_base.h>
40 #include <target/target_core_fabric.h>
41
42 #include "qla_def.h"
43 #include "qla_target.h"
44
45 static int ql2xtgt_tape_enable;
46 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47 MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
50 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51 module_param(qlini_mode, charp, S_IRUGO);
52 MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
58 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
59 "when ready "
60 "\"enabled\" (default) - initiator mode will always stay enabled.");
61
62 static int ql_dm_tgt_ex_pct = 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 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t);
145 static inline uint32_t qlt_make_handle(struct qla_qpair *);
146
147 /*
148 * Global Variables
149 */
150 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
151 struct kmem_cache *qla_tgt_plogi_cachep;
152 static mempool_t *qla_tgt_mgmt_cmd_mempool;
153 static struct workqueue_struct *qla_tgt_wq;
154 static DEFINE_MUTEX(qla_tgt_mutex);
155 static LIST_HEAD(qla_tgt_glist);
156
157 static const char *prot_op_str(u32 prot_op)
158 {
159 switch (prot_op) {
160 case TARGET_PROT_NORMAL: return "NORMAL";
161 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
162 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
163 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
164 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
165 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
166 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
167 default: return "UNKNOWN";
168 }
169 }
170
171 /* This API intentionally takes dest as a parameter, rather than returning
172 * int value to avoid caller forgetting to issue wmb() after the store */
173 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
174 {
175 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
176 *dest = atomic_inc_return(&base_vha->generation_tick);
177 /* memory barrier */
178 wmb();
179 }
180
181 /* Might release hw lock, then reaquire!! */
182 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
183 {
184 /* Send marker if required */
185 if (unlikely(vha->marker_needed != 0)) {
186 int rc = qla2x00_issue_marker(vha, vha_locked);
187 if (rc != QLA_SUCCESS) {
188 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
189 "qla_target(%d): issue_marker() failed\n",
190 vha->vp_idx);
191 }
192 return rc;
193 }
194 return QLA_SUCCESS;
195 }
196
197 static inline
198 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
199 uint8_t *d_id)
200 {
201 struct scsi_qla_host *host;
202 uint32_t key = 0;
203
204 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
205 (vha->d_id.b.al_pa == d_id[2]))
206 return vha;
207
208 key = (uint32_t)d_id[0] << 16;
209 key |= (uint32_t)d_id[1] << 8;
210 key |= (uint32_t)d_id[2];
211
212 host = btree_lookup32(&vha->hw->tgt.host_map, key);
213 if (!host)
214 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
215 "Unable to find host %06x\n", key);
216
217 return host;
218 }
219
220 static inline
221 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
222 uint16_t vp_idx)
223 {
224 struct qla_hw_data *ha = vha->hw;
225
226 if (vha->vp_idx == vp_idx)
227 return vha;
228
229 BUG_ON(ha->tgt.tgt_vp_map == NULL);
230 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
231 return ha->tgt.tgt_vp_map[vp_idx].vha;
232
233 return NULL;
234 }
235
236 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
237 {
238 unsigned long flags;
239
240 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
241
242 vha->hw->tgt.num_pend_cmds++;
243 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
244 vha->qla_stats.stat_max_pend_cmds =
245 vha->hw->tgt.num_pend_cmds;
246 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
247 }
248 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
249 {
250 unsigned long flags;
251
252 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
253 vha->hw->tgt.num_pend_cmds--;
254 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
255 }
256
257
258 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
259 struct atio_from_isp *atio, uint8_t ha_locked)
260 {
261 struct qla_tgt_sess_op *u;
262 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
263 unsigned long flags;
264
265 if (tgt->tgt_stop) {
266 ql_dbg(ql_dbg_async, vha, 0x502c,
267 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
268 vha->vp_idx);
269 goto out_term;
270 }
271
272 u = kzalloc(sizeof(*u), GFP_ATOMIC);
273 if (u == NULL)
274 goto out_term;
275
276 u->vha = vha;
277 memcpy(&u->atio, atio, sizeof(*atio));
278 INIT_LIST_HEAD(&u->cmd_list);
279
280 spin_lock_irqsave(&vha->cmd_list_lock, flags);
281 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
282 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
283
284 schedule_delayed_work(&vha->unknown_atio_work, 1);
285
286 out:
287 return;
288
289 out_term:
290 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
291 goto out;
292 }
293
294 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
295 uint8_t ha_locked)
296 {
297 struct qla_tgt_sess_op *u, *t;
298 scsi_qla_host_t *host;
299 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
300 unsigned long flags;
301 uint8_t queued = 0;
302
303 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
304 if (u->aborted) {
305 ql_dbg(ql_dbg_async, vha, 0x502e,
306 "Freeing unknown %s %p, because of Abort\n",
307 "ATIO_TYPE7", u);
308 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
309 &u->atio, ha_locked, 0);
310 goto abort;
311 }
312
313 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
314 if (host != NULL) {
315 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
316 "Requeuing unknown ATIO_TYPE7 %p\n", u);
317 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
318 } else if (tgt->tgt_stop) {
319 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
320 "Freeing unknown %s %p, because tgt is being stopped\n",
321 "ATIO_TYPE7", u);
322 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
323 &u->atio, ha_locked, 0);
324 } else {
325 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
326 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
327 if (!queued) {
328 queued = 1;
329 schedule_delayed_work(&vha->unknown_atio_work,
330 1);
331 }
332 continue;
333 }
334
335 abort:
336 spin_lock_irqsave(&vha->cmd_list_lock, flags);
337 list_del(&u->cmd_list);
338 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
339 kfree(u);
340 }
341 }
342
343 void qlt_unknown_atio_work_fn(struct work_struct *work)
344 {
345 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
346 struct scsi_qla_host, unknown_atio_work);
347
348 qlt_try_to_dequeue_unknown_atios(vha, 0);
349 }
350
351 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
352 struct atio_from_isp *atio, uint8_t ha_locked)
353 {
354 ql_dbg(ql_dbg_tgt, vha, 0xe072,
355 "%s: qla_target(%d): type %x ox_id %04x\n",
356 __func__, vha->vp_idx, atio->u.raw.entry_type,
357 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
358
359 switch (atio->u.raw.entry_type) {
360 case ATIO_TYPE7:
361 {
362 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
363 atio->u.isp24.fcp_hdr.d_id);
364 if (unlikely(NULL == host)) {
365 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
366 "qla_target(%d): Received ATIO_TYPE7 "
367 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
368 atio->u.isp24.fcp_hdr.d_id[0],
369 atio->u.isp24.fcp_hdr.d_id[1],
370 atio->u.isp24.fcp_hdr.d_id[2]);
371
372
373 qlt_queue_unknown_atio(vha, atio, ha_locked);
374 break;
375 }
376 if (unlikely(!list_empty(&vha->unknown_atio_list)))
377 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
378
379 qlt_24xx_atio_pkt(host, atio, ha_locked);
380 break;
381 }
382
383 case IMMED_NOTIFY_TYPE:
384 {
385 struct scsi_qla_host *host = vha;
386 struct imm_ntfy_from_isp *entry =
387 (struct imm_ntfy_from_isp *)atio;
388
389 qlt_issue_marker(vha, ha_locked);
390
391 if ((entry->u.isp24.vp_index != 0xFF) &&
392 (entry->u.isp24.nport_handle != 0xFFFF)) {
393 host = qlt_find_host_by_vp_idx(vha,
394 entry->u.isp24.vp_index);
395 if (unlikely(!host)) {
396 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
397 "qla_target(%d): Received "
398 "ATIO (IMMED_NOTIFY_TYPE) "
399 "with unknown vp_index %d\n",
400 vha->vp_idx, entry->u.isp24.vp_index);
401 break;
402 }
403 }
404 qlt_24xx_atio_pkt(host, atio, ha_locked);
405 break;
406 }
407
408 case VP_RPT_ID_IOCB_TYPE:
409 qla24xx_report_id_acquisition(vha,
410 (struct vp_rpt_id_entry_24xx *)atio);
411 break;
412
413 case ABTS_RECV_24XX:
414 {
415 struct abts_recv_from_24xx *entry =
416 (struct abts_recv_from_24xx *)atio;
417 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
418 entry->vp_index);
419 unsigned long flags;
420
421 if (unlikely(!host)) {
422 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
423 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
424 "received, with unknown vp_index %d\n",
425 vha->vp_idx, entry->vp_index);
426 break;
427 }
428 if (!ha_locked)
429 spin_lock_irqsave(&host->hw->hardware_lock, flags);
430 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
431 if (!ha_locked)
432 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
433 break;
434 }
435
436 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
437
438 default:
439 ql_dbg(ql_dbg_tgt, vha, 0xe040,
440 "qla_target(%d): Received unknown ATIO atio "
441 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
442 break;
443 }
444
445 return false;
446 }
447
448 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
449 struct rsp_que *rsp, response_t *pkt)
450 {
451 switch (pkt->entry_type) {
452 case CTIO_CRC2:
453 ql_dbg(ql_dbg_tgt, vha, 0xe073,
454 "qla_target(%d):%s: CRC2 Response pkt\n",
455 vha->vp_idx, __func__);
456 /* fall through */
457 case CTIO_TYPE7:
458 {
459 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
460 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
461 entry->vp_index);
462 if (unlikely(!host)) {
463 ql_dbg(ql_dbg_tgt, vha, 0xe041,
464 "qla_target(%d): Response pkt (CTIO_TYPE7) "
465 "received, with unknown vp_index %d\n",
466 vha->vp_idx, entry->vp_index);
467 break;
468 }
469 qlt_response_pkt(host, rsp, pkt);
470 break;
471 }
472
473 case IMMED_NOTIFY_TYPE:
474 {
475 struct scsi_qla_host *host = vha;
476 struct imm_ntfy_from_isp *entry =
477 (struct imm_ntfy_from_isp *)pkt;
478
479 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
480 if (unlikely(!host)) {
481 ql_dbg(ql_dbg_tgt, vha, 0xe042,
482 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
483 "received, with unknown vp_index %d\n",
484 vha->vp_idx, entry->u.isp24.vp_index);
485 break;
486 }
487 qlt_response_pkt(host, rsp, pkt);
488 break;
489 }
490
491 case NOTIFY_ACK_TYPE:
492 {
493 struct scsi_qla_host *host = vha;
494 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
495
496 if (0xFF != entry->u.isp24.vp_index) {
497 host = qlt_find_host_by_vp_idx(vha,
498 entry->u.isp24.vp_index);
499 if (unlikely(!host)) {
500 ql_dbg(ql_dbg_tgt, vha, 0xe043,
501 "qla_target(%d): Response "
502 "pkt (NOTIFY_ACK_TYPE) "
503 "received, with unknown "
504 "vp_index %d\n", vha->vp_idx,
505 entry->u.isp24.vp_index);
506 break;
507 }
508 }
509 qlt_response_pkt(host, rsp, pkt);
510 break;
511 }
512
513 case ABTS_RECV_24XX:
514 {
515 struct abts_recv_from_24xx *entry =
516 (struct abts_recv_from_24xx *)pkt;
517 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
518 entry->vp_index);
519 if (unlikely(!host)) {
520 ql_dbg(ql_dbg_tgt, vha, 0xe044,
521 "qla_target(%d): Response pkt "
522 "(ABTS_RECV_24XX) received, with unknown "
523 "vp_index %d\n", vha->vp_idx, entry->vp_index);
524 break;
525 }
526 qlt_response_pkt(host, rsp, pkt);
527 break;
528 }
529
530 case ABTS_RESP_24XX:
531 {
532 struct abts_resp_to_24xx *entry =
533 (struct abts_resp_to_24xx *)pkt;
534 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
535 entry->vp_index);
536 if (unlikely(!host)) {
537 ql_dbg(ql_dbg_tgt, vha, 0xe045,
538 "qla_target(%d): Response pkt "
539 "(ABTS_RECV_24XX) received, with unknown "
540 "vp_index %d\n", vha->vp_idx, entry->vp_index);
541 break;
542 }
543 qlt_response_pkt(host, rsp, pkt);
544 break;
545 }
546 default:
547 qlt_response_pkt(vha, rsp, pkt);
548 break;
549 }
550
551 }
552
553 /*
554 * All qlt_plogi_ack_t operations are protected by hardware_lock
555 */
556 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
557 struct imm_ntfy_from_isp *ntfy, int type)
558 {
559 struct qla_work_evt *e;
560 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
561 if (!e)
562 return QLA_FUNCTION_FAILED;
563
564 e->u.nack.fcport = fcport;
565 e->u.nack.type = type;
566 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
567 return qla2x00_post_work(vha, e);
568 }
569
570 static
571 void qla2x00_async_nack_sp_done(void *s, int res)
572 {
573 struct srb *sp = (struct srb *)s;
574 struct scsi_qla_host *vha = sp->vha;
575 unsigned long flags;
576
577 ql_dbg(ql_dbg_disc, vha, 0x20f2,
578 "Async done-%s res %x %8phC type %d\n",
579 sp->name, res, sp->fcport->port_name, sp->type);
580
581 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
582 sp->fcport->flags &= ~FCF_ASYNC_SENT;
583 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
584
585 switch (sp->type) {
586 case SRB_NACK_PLOGI:
587 sp->fcport->login_gen++;
588 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
589 sp->fcport->logout_on_delete = 1;
590 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
591 sp->fcport->send_els_logo = 0;
592 break;
593
594 case SRB_NACK_PRLI:
595 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
596 sp->fcport->deleted = 0;
597 sp->fcport->send_els_logo = 0;
598
599 if (!sp->fcport->login_succ &&
600 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
601 sp->fcport->login_succ = 1;
602
603 vha->fcport_count++;
604 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
605 qla24xx_sched_upd_fcport(sp->fcport);
606 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
607 } else {
608 sp->fcport->login_retry = 0;
609 sp->fcport->disc_state = DSC_LOGIN_COMPLETE;
610 sp->fcport->deleted = 0;
611 sp->fcport->logout_on_delete = 1;
612 }
613 break;
614
615 case SRB_NACK_LOGO:
616 sp->fcport->login_gen++;
617 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
618 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
619 break;
620 }
621 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
622
623 sp->free(sp);
624 }
625
626 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
627 struct imm_ntfy_from_isp *ntfy, int type)
628 {
629 int rval = QLA_FUNCTION_FAILED;
630 srb_t *sp;
631 char *c = NULL;
632
633 fcport->flags |= FCF_ASYNC_SENT;
634 switch (type) {
635 case SRB_NACK_PLOGI:
636 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
637 c = "PLOGI";
638 break;
639 case SRB_NACK_PRLI:
640 fcport->fw_login_state = DSC_LS_PRLI_PEND;
641 fcport->deleted = 0;
642 c = "PRLI";
643 break;
644 case SRB_NACK_LOGO:
645 fcport->fw_login_state = DSC_LS_LOGO_PEND;
646 c = "LOGO";
647 break;
648 }
649
650 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
651 if (!sp)
652 goto done;
653
654 sp->type = type;
655 sp->name = "nack";
656
657 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
658 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
659
660 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
661 sp->done = qla2x00_async_nack_sp_done;
662
663 rval = qla2x00_start_sp(sp);
664 if (rval != QLA_SUCCESS)
665 goto done_free_sp;
666
667 ql_dbg(ql_dbg_disc, vha, 0x20f4,
668 "Async-%s %8phC hndl %x %s\n",
669 sp->name, fcport->port_name, sp->handle, c);
670
671 return rval;
672
673 done_free_sp:
674 sp->free(sp);
675 done:
676 fcport->flags &= ~FCF_ASYNC_SENT;
677 return rval;
678 }
679
680 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
681 {
682 fc_port_t *t;
683 unsigned long flags;
684
685 switch (e->u.nack.type) {
686 case SRB_NACK_PRLI:
687 mutex_lock(&vha->vha_tgt.tgt_mutex);
688 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
689 mutex_unlock(&vha->vha_tgt.tgt_mutex);
690 if (t) {
691 ql_log(ql_log_info, vha, 0xd034,
692 "%s create sess success %p", __func__, t);
693 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
694 /* create sess has an extra kref */
695 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
696 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
697 }
698 break;
699 }
700 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
701 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
702 }
703
704 void qla24xx_delete_sess_fn(struct work_struct *work)
705 {
706 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
707 struct qla_hw_data *ha = fcport->vha->hw;
708 unsigned long flags;
709
710 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
711
712 if (fcport->se_sess) {
713 ha->tgt.tgt_ops->shutdown_sess(fcport);
714 ha->tgt.tgt_ops->put_sess(fcport);
715 } else {
716 qlt_unreg_sess(fcport);
717 }
718 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
719 }
720
721 /*
722 * Called from qla2x00_reg_remote_port()
723 */
724 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
725 {
726 struct qla_hw_data *ha = vha->hw;
727 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
728 struct fc_port *sess = fcport;
729 unsigned long flags;
730
731 if (!vha->hw->tgt.tgt_ops)
732 return;
733
734 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
735 if (tgt->tgt_stop) {
736 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
737 return;
738 }
739
740 if (fcport->disc_state == DSC_DELETE_PEND) {
741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
742 return;
743 }
744
745 if (!sess->se_sess) {
746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
747
748 mutex_lock(&vha->vha_tgt.tgt_mutex);
749 sess = qlt_create_sess(vha, fcport, false);
750 mutex_unlock(&vha->vha_tgt.tgt_mutex);
751
752 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
753 } else {
754 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
755 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
756 return;
757 }
758
759 if (!kref_get_unless_zero(&sess->sess_kref)) {
760 ql_dbg(ql_dbg_disc, vha, 0x2107,
761 "%s: kref_get fail sess %8phC \n",
762 __func__, sess->port_name);
763 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
764 return;
765 }
766
767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
768 "qla_target(%u): %ssession for port %8phC "
769 "(loop ID %d) reappeared\n", vha->vp_idx,
770 sess->local ? "local " : "", sess->port_name, sess->loop_id);
771
772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
773 "Reappeared sess %p\n", sess);
774
775 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
776 fcport->loop_id,
777 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
778 }
779
780 if (sess && sess->local) {
781 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
782 "qla_target(%u): local session for "
783 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
784 fcport->port_name, sess->loop_id);
785 sess->local = 0;
786 }
787 ha->tgt.tgt_ops->put_sess(sess);
788 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
789 }
790
791 /*
792 * This is a zero-base ref-counting solution, since hardware_lock
793 * guarantees that ref_count is not modified concurrently.
794 * Upon successful return content of iocb is undefined
795 */
796 static struct qlt_plogi_ack_t *
797 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
798 struct imm_ntfy_from_isp *iocb)
799 {
800 struct qlt_plogi_ack_t *pla;
801
802 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
803 if (pla->id.b24 == id->b24) {
804 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d,
805 "%s %d %8phC Term INOT due to new INOT",
806 __func__, __LINE__,
807 pla->iocb.u.isp24.port_name);
808 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
809 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
810 return pla;
811 }
812 }
813
814 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
815 if (!pla) {
816 ql_dbg(ql_dbg_async, vha, 0x5088,
817 "qla_target(%d): Allocation of plogi_ack failed\n",
818 vha->vp_idx);
819 return NULL;
820 }
821
822 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
823 pla->id = *id;
824 list_add_tail(&pla->list, &vha->plogi_ack_list);
825
826 return pla;
827 }
828
829 void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
830 struct qlt_plogi_ack_t *pla)
831 {
832 struct imm_ntfy_from_isp *iocb = &pla->iocb;
833 port_id_t port_id;
834 uint16_t loop_id;
835 fc_port_t *fcport = pla->fcport;
836
837 BUG_ON(!pla->ref_count);
838 pla->ref_count--;
839
840 if (pla->ref_count)
841 return;
842
843 ql_dbg(ql_dbg_disc, vha, 0x5089,
844 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
845 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
846 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
847 iocb->u.isp24.port_id[0],
848 le16_to_cpu(iocb->u.isp24.nport_handle),
849 iocb->u.isp24.exchange_address, iocb->ox_id);
850
851 port_id.b.domain = iocb->u.isp24.port_id[2];
852 port_id.b.area = iocb->u.isp24.port_id[1];
853 port_id.b.al_pa = iocb->u.isp24.port_id[0];
854 port_id.b.rsvd_1 = 0;
855
856 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
857
858 fcport->loop_id = loop_id;
859 fcport->d_id = port_id;
860 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
861 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
862 else
863 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
864
865 list_for_each_entry(fcport, &vha->vp_fcports, list) {
866 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
867 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
868 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
869 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
870 }
871
872 list_del(&pla->list);
873 kmem_cache_free(qla_tgt_plogi_cachep, pla);
874 }
875
876 void
877 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
878 struct fc_port *sess, enum qlt_plogi_link_t link)
879 {
880 struct imm_ntfy_from_isp *iocb = &pla->iocb;
881 /* Inc ref_count first because link might already be pointing at pla */
882 pla->ref_count++;
883
884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
885 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
886 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
887 sess, link, sess->port_name,
888 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
889 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
890 pla->ref_count, pla, link);
891
892 if (link == QLT_PLOGI_LINK_CONFLICT) {
893 switch (sess->disc_state) {
894 case DSC_DELETED:
895 case DSC_DELETE_PEND:
896 pla->ref_count--;
897 return;
898 default:
899 break;
900 }
901 }
902
903 if (sess->plogi_link[link])
904 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
905
906 if (link == QLT_PLOGI_LINK_SAME_WWN)
907 pla->fcport = sess;
908
909 sess->plogi_link[link] = pla;
910 }
911
912 typedef struct {
913 /* These fields must be initialized by the caller */
914 port_id_t id;
915 /*
916 * number of cmds dropped while we were waiting for
917 * initiator to ack LOGO initialize to 1 if LOGO is
918 * triggered by a command, otherwise, to 0
919 */
920 int cmd_count;
921
922 /* These fields are used by callee */
923 struct list_head list;
924 } qlt_port_logo_t;
925
926 static void
927 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
928 {
929 qlt_port_logo_t *tmp;
930 int res;
931
932 mutex_lock(&vha->vha_tgt.tgt_mutex);
933
934 list_for_each_entry(tmp, &vha->logo_list, list) {
935 if (tmp->id.b24 == logo->id.b24) {
936 tmp->cmd_count += logo->cmd_count;
937 mutex_unlock(&vha->vha_tgt.tgt_mutex);
938 return;
939 }
940 }
941
942 list_add_tail(&logo->list, &vha->logo_list);
943
944 mutex_unlock(&vha->vha_tgt.tgt_mutex);
945
946 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
947
948 mutex_lock(&vha->vha_tgt.tgt_mutex);
949 list_del(&logo->list);
950 mutex_unlock(&vha->vha_tgt.tgt_mutex);
951
952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
953 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
954 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
955 logo->cmd_count, res);
956 }
957
958 void qlt_free_session_done(struct work_struct *work)
959 {
960 struct fc_port *sess = container_of(work, struct fc_port,
961 free_work);
962 struct qla_tgt *tgt = sess->tgt;
963 struct scsi_qla_host *vha = sess->vha;
964 struct qla_hw_data *ha = vha->hw;
965 unsigned long flags;
966 bool logout_started = false;
967 scsi_qla_host_t *base_vha;
968 struct qlt_plogi_ack_t *own =
969 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
970
971 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
972 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
973 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
974 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
975 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
976 sess->logout_on_delete, sess->keep_nport_handle,
977 sess->send_els_logo);
978
979 if (!IS_SW_RESV_ADDR(sess->d_id)) {
980 if (sess->send_els_logo) {
981 qlt_port_logo_t logo;
982
983 logo.id = sess->d_id;
984 logo.cmd_count = 0;
985 if (!own)
986 qlt_send_first_logo(vha, &logo);
987 sess->send_els_logo = 0;
988 }
989
990 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
991 int rc;
992
993 if (!own ||
994 (own &&
995 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
996 rc = qla2x00_post_async_logout_work(vha, sess,
997 NULL);
998 if (rc != QLA_SUCCESS)
999 ql_log(ql_log_warn, vha, 0xf085,
1000 "Schedule logo failed sess %p rc %d\n",
1001 sess, rc);
1002 else
1003 logout_started = true;
1004 } else if (own && (own->iocb.u.isp24.status_subcode ==
1005 ELS_PRLI) && ha->flags.rida_fmt2) {
1006 rc = qla2x00_post_async_prlo_work(vha, sess,
1007 NULL);
1008 if (rc != QLA_SUCCESS)
1009 ql_log(ql_log_warn, vha, 0xf085,
1010 "Schedule PRLO failed sess %p rc %d\n",
1011 sess, rc);
1012 else
1013 logout_started = true;
1014 }
1015 }
1016 }
1017
1018 /*
1019 * Release the target session for FC Nexus from fabric module code.
1020 */
1021 if (sess->se_sess != NULL)
1022 ha->tgt.tgt_ops->free_session(sess);
1023
1024 if (logout_started) {
1025 bool traced = false;
1026
1027 while (!READ_ONCE(sess->logout_completed)) {
1028 if (!traced) {
1029 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1030 "%s: waiting for sess %p logout\n",
1031 __func__, sess);
1032 traced = true;
1033 }
1034 msleep(100);
1035 }
1036
1037 ql_dbg(ql_dbg_disc, vha, 0xf087,
1038 "%s: sess %p logout completed\n", __func__, sess);
1039 }
1040
1041 if (sess->logo_ack_needed) {
1042 sess->logo_ack_needed = 0;
1043 qla24xx_async_notify_ack(vha, sess,
1044 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
1045 }
1046
1047 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1048 if (sess->se_sess) {
1049 sess->se_sess = NULL;
1050 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1051 tgt->sess_count--;
1052 }
1053
1054 sess->disc_state = DSC_DELETED;
1055 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1056 sess->deleted = QLA_SESS_DELETED;
1057
1058 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1059 vha->fcport_count--;
1060 sess->login_succ = 0;
1061 }
1062
1063 qla2x00_clear_loop_id(sess);
1064
1065 if (sess->conflict) {
1066 sess->conflict->login_pause = 0;
1067 sess->conflict = NULL;
1068 if (!test_bit(UNLOADING, &vha->dpc_flags))
1069 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1070 }
1071
1072 {
1073 struct qlt_plogi_ack_t *con =
1074 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
1075 struct imm_ntfy_from_isp *iocb;
1076 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
1077
1078 if (con) {
1079 iocb = &con->iocb;
1080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
1081 "se_sess %p / sess %p port %8phC is gone,"
1082 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1083 sess->se_sess, sess, sess->port_name,
1084 own ? "releasing own PLOGI" : "no own PLOGI pending",
1085 own ? own->ref_count : -1,
1086 iocb->u.isp24.port_name, con->ref_count);
1087 qlt_plogi_ack_unref(vha, con);
1088 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
1089 } else {
1090 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1091 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1092 sess->se_sess, sess, sess->port_name,
1093 own ? "releasing own PLOGI" :
1094 "no own PLOGI pending",
1095 own ? own->ref_count : -1);
1096 }
1097
1098 if (own) {
1099 sess->fw_login_state = DSC_LS_PLOGI_PEND;
1100 qlt_plogi_ack_unref(vha, own);
1101 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1102 }
1103 }
1104
1105 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1106
1107 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
1108 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1109 sess, sess->port_name, vha->fcport_count);
1110
1111 if (tgt && (tgt->sess_count == 0))
1112 wake_up_all(&tgt->waitQ);
1113
1114 if (vha->fcport_count == 0)
1115 wake_up_all(&vha->fcport_waitQ);
1116
1117 base_vha = pci_get_drvdata(ha->pdev);
1118
1119 sess->free_pending = 0;
1120
1121 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1122 return;
1123
1124 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
1125 switch (vha->host->active_mode) {
1126 case MODE_INITIATOR:
1127 case MODE_DUAL:
1128 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1129 qla2xxx_wake_dpc(vha);
1130 break;
1131 case MODE_TARGET:
1132 default:
1133 /* no-op */
1134 break;
1135 }
1136 }
1137 }
1138
1139 /* ha->tgt.sess_lock supposed to be held on entry */
1140 void qlt_unreg_sess(struct fc_port *sess)
1141 {
1142 struct scsi_qla_host *vha = sess->vha;
1143 unsigned long flags;
1144
1145 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
1146 "%s sess %p for deletion %8phC\n",
1147 __func__, sess, sess->port_name);
1148
1149 spin_lock_irqsave(&sess->vha->work_lock, flags);
1150 if (sess->free_pending) {
1151 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1152 return;
1153 }
1154 sess->free_pending = 1;
1155 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1156
1157 if (sess->se_sess)
1158 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
1159
1160 qla2x00_mark_device_lost(vha, sess, 0, 0);
1161
1162 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1163 sess->disc_state = DSC_DELETE_PEND;
1164 sess->last_rscn_gen = sess->rscn_gen;
1165 sess->last_login_gen = sess->login_gen;
1166
1167 if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
1168 !(sess->nvme_flag & NVME_FLAG_DELETING)) {
1169 sess->nvme_flag |= NVME_FLAG_DELETING;
1170 schedule_work(&sess->nvme_del_work);
1171 } else {
1172 INIT_WORK(&sess->free_work, qlt_free_session_done);
1173 schedule_work(&sess->free_work);
1174 }
1175 }
1176 EXPORT_SYMBOL(qlt_unreg_sess);
1177
1178 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1179 {
1180 struct qla_hw_data *ha = vha->hw;
1181 struct fc_port *sess = NULL;
1182 uint16_t loop_id;
1183 int res = 0;
1184 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
1185 unsigned long flags;
1186
1187 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1188 if (loop_id == 0xFFFF) {
1189 /* Global event */
1190 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
1191 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1192 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
1193 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1194 } else {
1195 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1196 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
1197 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1198 }
1199
1200 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1201 "Using sess for qla_tgt_reset: %p\n", sess);
1202 if (!sess) {
1203 res = -ESRCH;
1204 return res;
1205 }
1206
1207 ql_dbg(ql_dbg_tgt, vha, 0xe047,
1208 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1209 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
1210 mcmd, loop_id);
1211
1212 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
1213 }
1214
1215 static void qla24xx_chk_fcp_state(struct fc_port *sess)
1216 {
1217 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
1218 sess->logout_on_delete = 0;
1219 sess->logo_ack_needed = 0;
1220 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1221 sess->scan_state = 0;
1222 }
1223 }
1224
1225 void qlt_schedule_sess_for_deletion(struct fc_port *sess)
1226 {
1227 struct qla_tgt *tgt = sess->tgt;
1228 unsigned long flags;
1229 u16 sec;
1230
1231 switch (sess->disc_state) {
1232 case DSC_DELETE_PEND:
1233 return;
1234 case DSC_DELETED:
1235 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1236 wake_up_all(&tgt->waitQ);
1237 if (sess->vha->fcport_count == 0)
1238 wake_up_all(&sess->vha->fcport_waitQ);
1239
1240 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1241 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
1242 return;
1243 break;
1244 case DSC_UPD_FCPORT:
1245 /*
1246 * This port is not done reporting to upper layer.
1247 * let it finish
1248 */
1249 sess->next_disc_state = DSC_DELETE_PEND;
1250 sec = jiffies_to_msecs(jiffies -
1251 sess->jiffies_at_registration)/1000;
1252 if (sess->sec_since_registration < sec && sec && !(sec % 5)) {
1253 sess->sec_since_registration = sec;
1254 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
1255 "%s %8phC : Slow Rport registration(%d Sec)\n",
1256 __func__, sess->port_name, sec);
1257 }
1258 return;
1259 default:
1260 break;
1261 }
1262
1263 spin_lock_irqsave(&sess->vha->work_lock, flags);
1264 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1265 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1266 return;
1267 }
1268 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1269 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1270
1271 sess->disc_state = DSC_DELETE_PEND;
1272
1273 qla24xx_chk_fcp_state(sess);
1274
1275 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1276 "Scheduling sess %p for deletion %8phC\n",
1277 sess, sess->port_name);
1278
1279 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn);
1280 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
1281 }
1282
1283 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
1284 {
1285 struct fc_port *sess;
1286 scsi_qla_host_t *vha = tgt->vha;
1287
1288 list_for_each_entry(sess, &vha->vp_fcports, list) {
1289 if (sess->se_sess)
1290 qlt_schedule_sess_for_deletion(sess);
1291 }
1292
1293 /* At this point tgt could be already dead */
1294 }
1295
1296 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1297 uint16_t *loop_id)
1298 {
1299 struct qla_hw_data *ha = vha->hw;
1300 dma_addr_t gid_list_dma;
1301 struct gid_list_info *gid_list;
1302 char *id_iter;
1303 int res, rc, i;
1304 uint16_t entries;
1305
1306 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1307 &gid_list_dma, GFP_KERNEL);
1308 if (!gid_list) {
1309 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1310 "qla_target(%d): DMA Alloc failed of %u\n",
1311 vha->vp_idx, qla2x00_gid_list_size(ha));
1312 return -ENOMEM;
1313 }
1314
1315 /* Get list of logged in devices */
1316 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
1317 if (rc != QLA_SUCCESS) {
1318 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1319 "qla_target(%d): get_id_list() failed: %x\n",
1320 vha->vp_idx, rc);
1321 res = -EBUSY;
1322 goto out_free_id_list;
1323 }
1324
1325 id_iter = (char *)gid_list;
1326 res = -ENOENT;
1327 for (i = 0; i < entries; i++) {
1328 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1329 if ((gid->al_pa == s_id[2]) &&
1330 (gid->area == s_id[1]) &&
1331 (gid->domain == s_id[0])) {
1332 *loop_id = le16_to_cpu(gid->loop_id);
1333 res = 0;
1334 break;
1335 }
1336 id_iter += ha->gid_list_info_size;
1337 }
1338
1339 out_free_id_list:
1340 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1341 gid_list, gid_list_dma);
1342 return res;
1343 }
1344
1345 /*
1346 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1347 * Caller must put it.
1348 */
1349 static struct fc_port *qlt_create_sess(
1350 struct scsi_qla_host *vha,
1351 fc_port_t *fcport,
1352 bool local)
1353 {
1354 struct qla_hw_data *ha = vha->hw;
1355 struct fc_port *sess = fcport;
1356 unsigned long flags;
1357
1358 if (vha->vha_tgt.qla_tgt->tgt_stop)
1359 return NULL;
1360
1361 if (fcport->se_sess) {
1362 if (!kref_get_unless_zero(&sess->sess_kref)) {
1363 ql_dbg(ql_dbg_disc, vha, 0x20f6,
1364 "%s: kref_get_unless_zero failed for %8phC\n",
1365 __func__, sess->port_name);
1366 return NULL;
1367 }
1368 return fcport;
1369 }
1370 sess->tgt = vha->vha_tgt.qla_tgt;
1371 sess->local = local;
1372
1373 /*
1374 * Under normal circumstances we want to logout from firmware when
1375 * session eventually ends and release corresponding nport handle.
1376 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
1377 * code will adjust these flags as necessary.
1378 */
1379 sess->logout_on_delete = 1;
1380 sess->keep_nport_handle = 0;
1381 sess->logout_completed = 0;
1382
1383 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1384 &fcport->port_name[0], sess) < 0) {
1385 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
1386 "(%d) %8phC check_initiator_node_acl failed\n",
1387 vha->vp_idx, fcport->port_name);
1388 return NULL;
1389 } else {
1390 kref_init(&fcport->sess_kref);
1391 /*
1392 * Take an extra reference to ->sess_kref here to handle
1393 * fc_port access across ->tgt.sess_lock reaquire.
1394 */
1395 if (!kref_get_unless_zero(&sess->sess_kref)) {
1396 ql_dbg(ql_dbg_disc, vha, 0x20f7,
1397 "%s: kref_get_unless_zero failed for %8phC\n",
1398 __func__, sess->port_name);
1399 return NULL;
1400 }
1401
1402 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1403 if (!IS_SW_RESV_ADDR(sess->d_id))
1404 vha->vha_tgt.qla_tgt->sess_count++;
1405
1406 qlt_do_generation_tick(vha, &sess->generation);
1407 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1408 }
1409
1410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1411 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1412 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1413 vha->vha_tgt.qla_tgt->sess_count);
1414
1415 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
1416 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1417 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1418 vha->vp_idx, local ? "local " : "", fcport->port_name,
1419 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1420 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
1421
1422 return sess;
1423 }
1424
1425 /*
1426 * max_gen - specifies maximum session generation
1427 * at which this deletion requestion is still valid
1428 */
1429 void
1430 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
1431 {
1432 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1433 struct fc_port *sess = fcport;
1434 unsigned long flags;
1435
1436 if (!vha->hw->tgt.tgt_ops)
1437 return;
1438
1439 if (!tgt)
1440 return;
1441
1442 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
1443 if (tgt->tgt_stop) {
1444 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1445 return;
1446 }
1447 if (!sess->se_sess) {
1448 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1449 return;
1450 }
1451
1452 if (max_gen - sess->generation < 0) {
1453 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1455 "Ignoring stale deletion request for se_sess %p / sess %p"
1456 " for port %8phC, req_gen %d, sess_gen %d\n",
1457 sess->se_sess, sess, sess->port_name, max_gen,
1458 sess->generation);
1459 return;
1460 }
1461
1462 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1463
1464 sess->local = 1;
1465 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1466 qlt_schedule_sess_for_deletion(sess);
1467 }
1468
1469 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1470 {
1471 struct qla_hw_data *ha = tgt->ha;
1472 unsigned long flags;
1473 int res;
1474 /*
1475 * We need to protect against race, when tgt is freed before or
1476 * inside wake_up()
1477 */
1478 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1479 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1480 "tgt %p, sess_count=%d\n",
1481 tgt, tgt->sess_count);
1482 res = (tgt->sess_count == 0);
1483 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1484
1485 return res;
1486 }
1487
1488 /* Called by tcm_qla2xxx configfs code */
1489 int qlt_stop_phase1(struct qla_tgt *tgt)
1490 {
1491 struct scsi_qla_host *vha = tgt->vha;
1492 struct qla_hw_data *ha = tgt->ha;
1493 unsigned long flags;
1494
1495 mutex_lock(&ha->optrom_mutex);
1496 mutex_lock(&qla_tgt_mutex);
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 mutex_unlock(&ha->optrom_mutex);
1503 return -EPERM;
1504 }
1505
1506 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1507 vha->host_no, vha);
1508 /*
1509 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1510 * Lock is needed, because we still can get an incoming packet.
1511 */
1512 mutex_lock(&vha->vha_tgt.tgt_mutex);
1513 tgt->tgt_stop = 1;
1514 qlt_clear_tgt_db(tgt);
1515 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1516 mutex_unlock(&qla_tgt_mutex);
1517
1518 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1519 "Waiting for sess works (tgt %p)", tgt);
1520 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1521 while (!list_empty(&tgt->sess_works_list)) {
1522 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1523 flush_scheduled_work();
1524 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1525 }
1526 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1527
1528 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1529 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
1530
1531 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1532
1533 /* Big hammer */
1534 if (!ha->flags.host_shutting_down &&
1535 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
1536 qlt_disable_vha(vha);
1537
1538 /* Wait for sessions to clear out (just in case) */
1539 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1540 mutex_unlock(&ha->optrom_mutex);
1541
1542 return 0;
1543 }
1544 EXPORT_SYMBOL(qlt_stop_phase1);
1545
1546 /* Called by tcm_qla2xxx configfs code */
1547 void qlt_stop_phase2(struct qla_tgt *tgt)
1548 {
1549 scsi_qla_host_t *vha = tgt->vha;
1550
1551 if (tgt->tgt_stopped) {
1552 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1553 "Already in tgt->tgt_stopped state\n");
1554 dump_stack();
1555 return;
1556 }
1557 if (!tgt->tgt_stop) {
1558 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1559 "%s: phase1 stop is not completed\n", __func__);
1560 dump_stack();
1561 return;
1562 }
1563
1564 mutex_lock(&vha->vha_tgt.tgt_mutex);
1565 tgt->tgt_stop = 0;
1566 tgt->tgt_stopped = 1;
1567 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1568
1569 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
1570 tgt);
1571
1572 switch (vha->qlini_mode) {
1573 case QLA2XXX_INI_MODE_EXCLUSIVE:
1574 vha->flags.online = 1;
1575 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1576 break;
1577 default:
1578 break;
1579 }
1580 }
1581 EXPORT_SYMBOL(qlt_stop_phase2);
1582
1583 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1584 static void qlt_release(struct qla_tgt *tgt)
1585 {
1586 scsi_qla_host_t *vha = tgt->vha;
1587 void *node;
1588 u64 key = 0;
1589 u16 i;
1590 struct qla_qpair_hint *h;
1591 struct qla_hw_data *ha = vha->hw;
1592
1593 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1594 !tgt->tgt_stopped)
1595 qlt_stop_phase1(tgt);
1596
1597 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
1598 qlt_stop_phase2(tgt);
1599
1600 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1601 unsigned long flags;
1602
1603 h = &tgt->qphints[i];
1604 if (h->qpair) {
1605 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1606 list_del(&h->hint_elem);
1607 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1608 h->qpair = NULL;
1609 }
1610 }
1611 kfree(tgt->qphints);
1612 mutex_lock(&qla_tgt_mutex);
1613 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1614 mutex_unlock(&qla_tgt_mutex);
1615
1616 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1617 btree_remove64(&tgt->lun_qpair_map, key);
1618
1619 btree_destroy64(&tgt->lun_qpair_map);
1620
1621 if (vha->vp_idx)
1622 if (ha->tgt.tgt_ops &&
1623 ha->tgt.tgt_ops->remove_target &&
1624 vha->vha_tgt.target_lport_ptr)
1625 ha->tgt.tgt_ops->remove_target(vha);
1626
1627 vha->vha_tgt.qla_tgt = NULL;
1628
1629 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1630 "Release of tgt %p finished\n", tgt);
1631
1632 kfree(tgt);
1633 }
1634
1635 /* ha->hardware_lock supposed to be held on entry */
1636 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1637 const void *param, unsigned int param_size)
1638 {
1639 struct qla_tgt_sess_work_param *prm;
1640 unsigned long flags;
1641
1642 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1643 if (!prm) {
1644 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1645 "qla_target(%d): Unable to create session "
1646 "work, command will be refused", 0);
1647 return -ENOMEM;
1648 }
1649
1650 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1651 "Scheduling work (type %d, prm %p)"
1652 " to find session for param %p (size %d, tgt %p)\n",
1653 type, prm, param, param_size, tgt);
1654
1655 prm->type = type;
1656 memcpy(&prm->tm_iocb, param, param_size);
1657
1658 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1659 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1660 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1661
1662 schedule_work(&tgt->sess_work);
1663
1664 return 0;
1665 }
1666
1667 /*
1668 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1669 */
1670 static void qlt_send_notify_ack(struct qla_qpair *qpair,
1671 struct imm_ntfy_from_isp *ntfy,
1672 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1673 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1674 {
1675 struct scsi_qla_host *vha = qpair->vha;
1676 struct qla_hw_data *ha = vha->hw;
1677 request_t *pkt;
1678 struct nack_to_isp *nack;
1679
1680 if (!ha->flags.fw_started)
1681 return;
1682
1683 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1684
1685 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
1686 if (!pkt) {
1687 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1688 "qla_target(%d): %s failed: unable to allocate "
1689 "request packet\n", vha->vp_idx, __func__);
1690 return;
1691 }
1692
1693 if (vha->vha_tgt.qla_tgt != NULL)
1694 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1695
1696 pkt->entry_type = NOTIFY_ACK_TYPE;
1697 pkt->entry_count = 1;
1698
1699 nack = (struct nack_to_isp *)pkt;
1700 nack->ox_id = ntfy->ox_id;
1701
1702 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
1703 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1704 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1705 nack->u.isp24.flags = ntfy->u.isp24.flags &
1706 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1707 }
1708 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1709 nack->u.isp24.status = ntfy->u.isp24.status;
1710 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1711 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1712 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1713 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1714 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1715 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1716 nack->u.isp24.srr_reject_code = srr_reject_code;
1717 nack->u.isp24.srr_reject_code_expl = srr_explan;
1718 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1719
1720 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1721 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1722 vha->vp_idx, nack->u.isp24.status);
1723
1724 /* Memory Barrier */
1725 wmb();
1726 qla2x00_start_iocbs(vha, qpair->req);
1727 }
1728
1729 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd)
1730 {
1731 struct scsi_qla_host *vha = mcmd->vha;
1732 struct qla_hw_data *ha = vha->hw;
1733 struct abts_resp_to_24xx *resp;
1734 uint32_t f_ctl, h;
1735 uint8_t *p;
1736 int rc;
1737 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts;
1738 struct qla_qpair *qpair = mcmd->qpair;
1739
1740 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1741 "Sending task mgmt ABTS response (ha=%p, status=%x)\n",
1742 ha, mcmd->fc_tm_rsp);
1743
1744 rc = qlt_check_reserve_free_req(qpair, 1);
1745 if (rc) {
1746 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1747 "qla_target(%d): %s failed: unable to allocate request packet\n",
1748 vha->vp_idx, __func__);
1749 return -EAGAIN;
1750 }
1751
1752 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr;
1753 memset(resp, 0, sizeof(*resp));
1754
1755 h = qlt_make_handle(qpair);
1756 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1757 /*
1758 * CTIO type 7 from the firmware doesn't provide a way to
1759 * know the initiator's LOOP ID, hence we can't find
1760 * the session and, so, the command.
1761 */
1762 return -EAGAIN;
1763 } else {
1764 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd;
1765 }
1766
1767 resp->handle = MAKE_HANDLE(qpair->req->id, h);
1768 resp->entry_type = ABTS_RESP_24XX;
1769 resp->entry_count = 1;
1770 resp->nport_handle = abts->nport_handle;
1771 resp->vp_index = vha->vp_idx;
1772 resp->sof_type = abts->sof_type;
1773 resp->exchange_address = abts->exchange_address;
1774 resp->fcp_hdr_le = abts->fcp_hdr_le;
1775 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1776 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1777 F_CTL_SEQ_INITIATIVE);
1778 p = (uint8_t *)&f_ctl;
1779 resp->fcp_hdr_le.f_ctl[0] = *p++;
1780 resp->fcp_hdr_le.f_ctl[1] = *p++;
1781 resp->fcp_hdr_le.f_ctl[2] = *p;
1782
1783 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1784 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1785 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1786 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1787 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1788 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1789
1790 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1791 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) {
1792 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1793 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1794 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1795 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1796 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1797 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1798 } else {
1799 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1800 resp->payload.ba_rjt.reason_code =
1801 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1802 /* Other bytes are zero */
1803 }
1804
1805 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1806
1807 /* Memory Barrier */
1808 wmb();
1809 if (qpair->reqq_start_iocbs)
1810 qpair->reqq_start_iocbs(qpair);
1811 else
1812 qla2x00_start_iocbs(vha, qpair->req);
1813
1814 return rc;
1815 }
1816
1817 /*
1818 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1819 */
1820 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
1821 struct abts_recv_from_24xx *abts, uint32_t status,
1822 bool ids_reversed)
1823 {
1824 struct scsi_qla_host *vha = qpair->vha;
1825 struct qla_hw_data *ha = vha->hw;
1826 struct abts_resp_to_24xx *resp;
1827 uint32_t f_ctl;
1828 uint8_t *p;
1829
1830 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1831 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1832 ha, abts, status);
1833
1834 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1835 NULL);
1836 if (!resp) {
1837 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1838 "qla_target(%d): %s failed: unable to allocate "
1839 "request packet", vha->vp_idx, __func__);
1840 return;
1841 }
1842
1843 resp->entry_type = ABTS_RESP_24XX;
1844 resp->handle = QLA_TGT_SKIP_HANDLE;
1845 resp->entry_count = 1;
1846 resp->nport_handle = abts->nport_handle;
1847 resp->vp_index = vha->vp_idx;
1848 resp->sof_type = abts->sof_type;
1849 resp->exchange_address = abts->exchange_address;
1850 resp->fcp_hdr_le = abts->fcp_hdr_le;
1851 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1852 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1853 F_CTL_SEQ_INITIATIVE);
1854 p = (uint8_t *)&f_ctl;
1855 resp->fcp_hdr_le.f_ctl[0] = *p++;
1856 resp->fcp_hdr_le.f_ctl[1] = *p++;
1857 resp->fcp_hdr_le.f_ctl[2] = *p;
1858 if (ids_reversed) {
1859 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1860 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1861 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1862 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1863 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1864 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1865 } else {
1866 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1867 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1868 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1869 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1870 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1871 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1872 }
1873 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1874 if (status == FCP_TMF_CMPL) {
1875 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1876 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1877 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1878 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1879 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1880 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1881 } else {
1882 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1883 resp->payload.ba_rjt.reason_code =
1884 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1885 /* Other bytes are zero */
1886 }
1887
1888 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1889
1890 /* Memory Barrier */
1891 wmb();
1892 if (qpair->reqq_start_iocbs)
1893 qpair->reqq_start_iocbs(qpair);
1894 else
1895 qla2x00_start_iocbs(vha, qpair->req);
1896 }
1897
1898 /*
1899 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1900 */
1901 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1902 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd)
1903 {
1904 struct ctio7_to_24xx *ctio;
1905 u16 tmp;
1906 struct abts_recv_from_24xx *entry;
1907
1908 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL);
1909 if (ctio == NULL) {
1910 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1911 "qla_target(%d): %s failed: unable to allocate "
1912 "request packet\n", vha->vp_idx, __func__);
1913 return;
1914 }
1915
1916 if (mcmd)
1917 /* abts from remote port */
1918 entry = &mcmd->orig_iocb.abts;
1919 else
1920 /* abts from this driver. */
1921 entry = (struct abts_recv_from_24xx *)pkt;
1922
1923 /*
1924 * We've got on entrance firmware's response on by us generated
1925 * ABTS response. So, in it ID fields are reversed.
1926 */
1927
1928 ctio->entry_type = CTIO_TYPE7;
1929 ctio->entry_count = 1;
1930 ctio->nport_handle = entry->nport_handle;
1931 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1932 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1933 ctio->vp_index = vha->vp_idx;
1934 ctio->exchange_addr = entry->exchange_addr_to_abort;
1935 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
1936
1937 if (mcmd) {
1938 ctio->initiator_id[0] = entry->fcp_hdr_le.s_id[0];
1939 ctio->initiator_id[1] = entry->fcp_hdr_le.s_id[1];
1940 ctio->initiator_id[2] = entry->fcp_hdr_le.s_id[2];
1941
1942 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID)
1943 tmp |= (mcmd->abort_io_attr << 9);
1944 else if (qpair->retry_term_cnt & 1)
1945 tmp |= (0x4 << 9);
1946 } else {
1947 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1948 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1949 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1950
1951 if (qpair->retry_term_cnt & 1)
1952 tmp |= (0x4 << 9);
1953 }
1954 ctio->u.status1.flags = cpu_to_le16(tmp);
1955 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1956
1957 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1958 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n",
1959 le16_to_cpu(ctio->u.status1.flags),
1960 le16_to_cpu(ctio->u.status1.ox_id),
1961 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0);
1962
1963 /* Memory Barrier */
1964 wmb();
1965 if (qpair->reqq_start_iocbs)
1966 qpair->reqq_start_iocbs(qpair);
1967 else
1968 qla2x00_start_iocbs(vha, qpair->req);
1969
1970 if (mcmd)
1971 qlt_build_abts_resp_iocb(mcmd);
1972 else
1973 qlt_24xx_send_abts_resp(qpair,
1974 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true);
1975
1976 }
1977
1978 /* drop cmds for the given lun
1979 * XXX only looks for cmds on the port through which lun reset was recieved
1980 * XXX does not go through the list of other port (which may have cmds
1981 * for the same lun)
1982 */
1983 static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1984 u64 lun, uint8_t *s_id)
1985 {
1986 struct qla_tgt_sess_op *op;
1987 struct qla_tgt_cmd *cmd;
1988 uint32_t key;
1989 unsigned long flags;
1990
1991 key = sid_to_key(s_id);
1992 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1993 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1994 uint32_t op_key;
1995 u64 op_lun;
1996
1997 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1998 op_lun = scsilun_to_int(
1999 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
2000 if (op_key == key && op_lun == lun)
2001 op->aborted = true;
2002 }
2003
2004 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
2005 uint32_t op_key;
2006 u64 op_lun;
2007
2008 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
2009 op_lun = scsilun_to_int(
2010 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
2011 if (op_key == key && op_lun == lun)
2012 op->aborted = true;
2013 }
2014
2015 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
2016 uint32_t cmd_key;
2017 u64 cmd_lun;
2018
2019 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
2020 cmd_lun = scsilun_to_int(
2021 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
2022 if (cmd_key == key && cmd_lun == lun)
2023 cmd->aborted = 1;
2024 }
2025 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
2026 }
2027
2028 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha,
2029 uint64_t unpacked_lun)
2030 {
2031 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2032 struct qla_qpair_hint *h = NULL;
2033
2034 if (vha->flags.qpairs_available) {
2035 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun);
2036 if (!h)
2037 h = &tgt->qphints[0];
2038 } else {
2039 h = &tgt->qphints[0];
2040 }
2041
2042 return h;
2043 }
2044
2045 static void qlt_do_tmr_work(struct work_struct *work)
2046 {
2047 struct qla_tgt_mgmt_cmd *mcmd =
2048 container_of(work, struct qla_tgt_mgmt_cmd, work);
2049 struct qla_hw_data *ha = mcmd->vha->hw;
2050 int rc = EIO;
2051 uint32_t tag;
2052 unsigned long flags;
2053
2054 switch (mcmd->tmr_func) {
2055 case QLA_TGT_ABTS:
2056 tag = mcmd->orig_iocb.abts.exchange_addr_to_abort;
2057 break;
2058 default:
2059 tag = 0;
2060 break;
2061 }
2062
2063 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun,
2064 mcmd->tmr_func, tag);
2065
2066 if (rc != 0) {
2067 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags);
2068 switch (mcmd->tmr_func) {
2069 case QLA_TGT_ABTS:
2070 mcmd->fc_tm_rsp = FCP_TMF_REJECTED;
2071 qlt_build_abts_resp_iocb(mcmd);
2072 break;
2073 case QLA_TGT_LUN_RESET:
2074 case QLA_TGT_CLEAR_TS:
2075 case QLA_TGT_ABORT_TS:
2076 case QLA_TGT_CLEAR_ACA:
2077 case QLA_TGT_TARGET_RESET:
2078 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio,
2079 qla_sam_status);
2080 break;
2081
2082 case QLA_TGT_ABORT_ALL:
2083 case QLA_TGT_NEXUS_LOSS_SESS:
2084 case QLA_TGT_NEXUS_LOSS:
2085 qlt_send_notify_ack(mcmd->qpair,
2086 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2087 break;
2088 }
2089 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags);
2090
2091 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052,
2092 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2093 mcmd->vha->vp_idx, rc);
2094 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2095 }
2096 }
2097
2098 /* ha->hardware_lock supposed to be held on entry */
2099 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2100 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2101 {
2102 struct qla_hw_data *ha = vha->hw;
2103 struct qla_tgt_mgmt_cmd *mcmd;
2104 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
2105
2106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
2107 "qla_target(%d): task abort (tag=%d)\n",
2108 vha->vp_idx, abts->exchange_addr_to_abort);
2109
2110 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2111 if (mcmd == NULL) {
2112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
2113 "qla_target(%d): %s: Allocation of ABORT cmd failed",
2114 vha->vp_idx, __func__);
2115 return -ENOMEM;
2116 }
2117 memset(mcmd, 0, sizeof(*mcmd));
2118 mcmd->cmd_type = TYPE_TGT_TMCMD;
2119 mcmd->sess = sess;
2120 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
2121 mcmd->reset_count = ha->base_qpair->chip_reset;
2122 mcmd->tmr_func = QLA_TGT_ABTS;
2123 mcmd->qpair = h->qpair;
2124 mcmd->vha = vha;
2125
2126 /*
2127 * LUN is looked up by target-core internally based on the passed
2128 * abts->exchange_addr_to_abort tag.
2129 */
2130 mcmd->se_cmd.cpuid = h->cpuid;
2131
2132 if (ha->tgt.tgt_ops->find_cmd_by_tag) {
2133 struct qla_tgt_cmd *abort_cmd;
2134
2135 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess,
2136 abts->exchange_addr_to_abort);
2137 if (abort_cmd && abort_cmd->qpair) {
2138 mcmd->qpair = abort_cmd->qpair;
2139 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid;
2140 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr;
2141 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID;
2142 }
2143 }
2144
2145 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
2146 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work);
2147
2148 return 0;
2149 }
2150
2151 /*
2152 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2153 */
2154 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2155 struct abts_recv_from_24xx *abts)
2156 {
2157 struct qla_hw_data *ha = vha->hw;
2158 struct fc_port *sess;
2159 uint32_t tag = abts->exchange_addr_to_abort;
2160 uint8_t s_id[3];
2161 int rc;
2162 unsigned long flags;
2163
2164 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
2165 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
2166 "qla_target(%d): ABTS: Abort Sequence not "
2167 "supported\n", vha->vp_idx);
2168 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2169 false);
2170 return;
2171 }
2172
2173 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2174 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2175 "qla_target(%d): ABTS: Unknown Exchange "
2176 "Address received\n", vha->vp_idx);
2177 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2178 false);
2179 return;
2180 }
2181
2182 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2183 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2184 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
2185 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
2186 le32_to_cpu(abts->fcp_hdr_le.parameter));
2187
2188 s_id[0] = abts->fcp_hdr_le.s_id[2];
2189 s_id[1] = abts->fcp_hdr_le.s_id[1];
2190 s_id[2] = abts->fcp_hdr_le.s_id[0];
2191
2192 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2193 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2194 if (!sess) {
2195 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2196 "qla_target(%d): task abort for non-existent session\n",
2197 vha->vp_idx);
2198 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2199
2200 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2201 false);
2202 return;
2203 }
2204 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2205
2206
2207 if (sess->deleted) {
2208 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2209 false);
2210 return;
2211 }
2212
2213 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2214 if (rc != 0) {
2215 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2216 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2217 vha->vp_idx, rc);
2218 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2219 false);
2220 return;
2221 }
2222 }
2223
2224 /*
2225 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2226 */
2227 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2228 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2229 {
2230 struct scsi_qla_host *ha = mcmd->vha;
2231 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2232 struct ctio7_to_24xx *ctio;
2233 uint16_t temp;
2234
2235 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2236 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2237 ha, atio, resp_code);
2238
2239
2240 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2241 if (ctio == NULL) {
2242 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2243 "qla_target(%d): %s failed: unable to allocate "
2244 "request packet\n", ha->vp_idx, __func__);
2245 return;
2246 }
2247
2248 ctio->entry_type = CTIO_TYPE7;
2249 ctio->entry_count = 1;
2250 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2251 ctio->nport_handle = mcmd->sess->loop_id;
2252 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2253 ctio->vp_index = ha->vp_idx;
2254 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2255 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2256 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2257 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2258 temp = (atio->u.isp24.attr << 9)|
2259 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2260 ctio->u.status1.flags = cpu_to_le16(temp);
2261 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2262 ctio->u.status1.ox_id = cpu_to_le16(temp);
2263 ctio->u.status1.scsi_status =
2264 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2265 ctio->u.status1.response_len = cpu_to_le16(8);
2266 ctio->u.status1.sense_data[0] = resp_code;
2267
2268 /* Memory Barrier */
2269 wmb();
2270 if (qpair->reqq_start_iocbs)
2271 qpair->reqq_start_iocbs(qpair);
2272 else
2273 qla2x00_start_iocbs(ha, qpair->req);
2274 }
2275
2276 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2277 {
2278 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2279 }
2280 EXPORT_SYMBOL(qlt_free_mcmd);
2281
2282 /*
2283 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2284 * reacquire
2285 */
2286 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
2287 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2288 {
2289 struct atio_from_isp *atio = &cmd->atio;
2290 struct ctio7_to_24xx *ctio;
2291 uint16_t temp;
2292 struct scsi_qla_host *vha = cmd->vha;
2293
2294 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2295 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2296 "sense_key=%02x, asc=%02x, ascq=%02x",
2297 vha, atio, scsi_status, sense_key, asc, ascq);
2298
2299 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2300 if (!ctio) {
2301 ql_dbg(ql_dbg_async, vha, 0x3067,
2302 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2303 vha->host_no, __func__);
2304 goto out;
2305 }
2306
2307 ctio->entry_type = CTIO_TYPE7;
2308 ctio->entry_count = 1;
2309 ctio->handle = QLA_TGT_SKIP_HANDLE;
2310 ctio->nport_handle = cmd->sess->loop_id;
2311 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2312 ctio->vp_index = vha->vp_idx;
2313 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2314 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2315 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2316 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2317 temp = (atio->u.isp24.attr << 9) |
2318 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2319 ctio->u.status1.flags = cpu_to_le16(temp);
2320 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2321 ctio->u.status1.ox_id = cpu_to_le16(temp);
2322 ctio->u.status1.scsi_status =
2323 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2324 ctio->u.status1.response_len = cpu_to_le16(18);
2325 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2326
2327 if (ctio->u.status1.residual != 0)
2328 ctio->u.status1.scsi_status |=
2329 cpu_to_le16(SS_RESIDUAL_UNDER);
2330
2331 /* Response code and sense key */
2332 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2333 (&ctio->u.status1.sense_data)[0]);
2334 /* Additional sense length */
2335 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2336 /* ASC and ASCQ */
2337 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2338 (&ctio->u.status1.sense_data)[3]);
2339
2340 /* Memory Barrier */
2341 wmb();
2342
2343 if (qpair->reqq_start_iocbs)
2344 qpair->reqq_start_iocbs(qpair);
2345 else
2346 qla2x00_start_iocbs(vha, qpair->req);
2347
2348 out:
2349 return;
2350 }
2351
2352 /* callback from target fabric module code */
2353 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2354 {
2355 struct scsi_qla_host *vha = mcmd->sess->vha;
2356 struct qla_hw_data *ha = vha->hw;
2357 unsigned long flags;
2358 struct qla_qpair *qpair = mcmd->qpair;
2359 bool free_mcmd = true;
2360
2361 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2362 "TM response mcmd (%p) status %#x state %#x",
2363 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2364
2365 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2366
2367 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
2368 /*
2369 * Either the port is not online or this request was from
2370 * previous life, just abort the processing.
2371 */
2372 ql_dbg(ql_dbg_async, vha, 0xe100,
2373 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2374 vha->flags.online, qla2x00_reset_active(vha),
2375 mcmd->reset_count, qpair->chip_reset);
2376 ha->tgt.tgt_ops->free_mcmd(mcmd);
2377 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2378 return;
2379 }
2380
2381 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2382 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2383 ELS_LOGO ||
2384 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2385 ELS_PRLO ||
2386 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2387 ELS_TPRLO) {
2388 ql_dbg(ql_dbg_disc, vha, 0x2106,
2389 "TM response logo %phC status %#x state %#x",
2390 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2391 mcmd->flags);
2392 qlt_schedule_sess_for_deletion(mcmd->sess);
2393 } else {
2394 qlt_send_notify_ack(vha->hw->base_qpair,
2395 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2396 }
2397 } else {
2398 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) {
2399 qlt_build_abts_resp_iocb(mcmd);
2400 free_mcmd = false;
2401 } else
2402 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2403 mcmd->fc_tm_rsp);
2404 }
2405 /*
2406 * Make the callback for ->free_mcmd() to queue_work() and invoke
2407 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2408 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2409 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2410 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2411 * qlt_xmit_tm_rsp() returns here..
2412 */
2413 if (free_mcmd)
2414 ha->tgt.tgt_ops->free_mcmd(mcmd);
2415
2416 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2417 }
2418 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2419
2420 /* No locks */
2421 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2422 {
2423 struct qla_tgt_cmd *cmd = prm->cmd;
2424
2425 BUG_ON(cmd->sg_cnt == 0);
2426
2427 prm->sg = (struct scatterlist *)cmd->sg;
2428 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg,
2429 cmd->sg_cnt, cmd->dma_data_direction);
2430 if (unlikely(prm->seg_cnt == 0))
2431 goto out_err;
2432
2433 prm->cmd->sg_mapped = 1;
2434
2435 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2436 /*
2437 * If greater than four sg entries then we need to allocate
2438 * the continuation entries
2439 */
2440 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
2441 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2442 QLA_TGT_DATASEGS_PER_CMD_24XX,
2443 QLA_TGT_DATASEGS_PER_CONT_24XX);
2444 } else {
2445 /* DIF */
2446 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2447 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2448 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2449 prm->tot_dsds = prm->seg_cnt;
2450 } else
2451 prm->tot_dsds = prm->seg_cnt;
2452
2453 if (cmd->prot_sg_cnt) {
2454 prm->prot_sg = cmd->prot_sg;
2455 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev,
2456 cmd->prot_sg, cmd->prot_sg_cnt,
2457 cmd->dma_data_direction);
2458 if (unlikely(prm->prot_seg_cnt == 0))
2459 goto out_err;
2460
2461 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2462 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2463 /* Dif Bundling not support here */
2464 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2465 cmd->blk_sz);
2466 prm->tot_dsds += prm->prot_seg_cnt;
2467 } else
2468 prm->tot_dsds += prm->prot_seg_cnt;
2469 }
2470 }
2471
2472 return 0;
2473
2474 out_err:
2475 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2476 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2477 0, prm->cmd->sg_cnt);
2478 return -1;
2479 }
2480
2481 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2482 {
2483 struct qla_hw_data *ha;
2484 struct qla_qpair *qpair;
2485 if (!cmd->sg_mapped)
2486 return;
2487
2488 qpair = cmd->qpair;
2489
2490 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt,
2491 cmd->dma_data_direction);
2492 cmd->sg_mapped = 0;
2493
2494 if (cmd->prot_sg_cnt)
2495 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt,
2496 cmd->dma_data_direction);
2497
2498 if (!cmd->ctx)
2499 return;
2500 ha = vha->hw;
2501 if (cmd->ctx_dsd_alloced)
2502 qla2x00_clean_dsd_pool(ha, cmd->ctx);
2503
2504 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2505 }
2506
2507 static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2508 uint32_t req_cnt)
2509 {
2510 uint32_t cnt;
2511 struct req_que *req = qpair->req;
2512
2513 if (req->cnt < (req_cnt + 2)) {
2514 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2515 RD_REG_DWORD_RELAXED(req->req_q_out));
2516
2517 if (req->ring_index < cnt)
2518 req->cnt = cnt - req->ring_index;
2519 else
2520 req->cnt = req->length - (req->ring_index - cnt);
2521
2522 if (unlikely(req->cnt < (req_cnt + 2)))
2523 return -EAGAIN;
2524 }
2525
2526 req->cnt -= req_cnt;
2527
2528 return 0;
2529 }
2530
2531 /*
2532 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2533 */
2534 static inline void *qlt_get_req_pkt(struct req_que *req)
2535 {
2536 /* Adjust ring index. */
2537 req->ring_index++;
2538 if (req->ring_index == req->length) {
2539 req->ring_index = 0;
2540 req->ring_ptr = req->ring;
2541 } else {
2542 req->ring_ptr++;
2543 }
2544 return (cont_entry_t *)req->ring_ptr;
2545 }
2546
2547 /* ha->hardware_lock supposed to be held on entry */
2548 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2549 {
2550 uint32_t h;
2551 int index;
2552 uint8_t found = 0;
2553 struct req_que *req = qpair->req;
2554
2555 h = req->current_outstanding_cmd;
2556
2557 for (index = 1; index < req->num_outstanding_cmds; index++) {
2558 h++;
2559 if (h == req->num_outstanding_cmds)
2560 h = 1;
2561
2562 if (h == QLA_TGT_SKIP_HANDLE)
2563 continue;
2564
2565 if (!req->outstanding_cmds[h]) {
2566 found = 1;
2567 break;
2568 }
2569 }
2570
2571 if (found) {
2572 req->current_outstanding_cmd = h;
2573 } else {
2574 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2575 "qla_target(%d): Ran out of empty cmd slots\n",
2576 qpair->vha->vp_idx);
2577 h = QLA_TGT_NULL_HANDLE;
2578 }
2579
2580 return h;
2581 }
2582
2583 /* ha->hardware_lock supposed to be held on entry */
2584 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2585 struct qla_tgt_prm *prm)
2586 {
2587 uint32_t h;
2588 struct ctio7_to_24xx *pkt;
2589 struct atio_from_isp *atio = &prm->cmd->atio;
2590 uint16_t temp;
2591
2592 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2593 prm->pkt = pkt;
2594 memset(pkt, 0, sizeof(*pkt));
2595
2596 pkt->entry_type = CTIO_TYPE7;
2597 pkt->entry_count = (uint8_t)prm->req_cnt;
2598 pkt->vp_index = prm->cmd->vp_idx;
2599
2600 h = qlt_make_handle(qpair);
2601 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2602 /*
2603 * CTIO type 7 from the firmware doesn't provide a way to
2604 * know the initiator's LOOP ID, hence we can't find
2605 * the session and, so, the command.
2606 */
2607 return -EAGAIN;
2608 } else
2609 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2610
2611 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2612 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2613 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2614 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2615 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2616 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2617 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2618 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2619 temp = atio->u.isp24.attr << 9;
2620 pkt->u.status0.flags |= cpu_to_le16(temp);
2621 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2622 pkt->u.status0.ox_id = cpu_to_le16(temp);
2623 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2624
2625 return 0;
2626 }
2627
2628 /*
2629 * ha->hardware_lock supposed to be held on entry. We have already made sure
2630 * that there is sufficient amount of request entries to not drop it.
2631 */
2632 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2633 {
2634 int cnt;
2635 uint32_t *dword_ptr;
2636
2637 /* Build continuation packets */
2638 while (prm->seg_cnt > 0) {
2639 cont_a64_entry_t *cont_pkt64 =
2640 (cont_a64_entry_t *)qlt_get_req_pkt(
2641 prm->cmd->qpair->req);
2642
2643 /*
2644 * Make sure that from cont_pkt64 none of
2645 * 64-bit specific fields used for 32-bit
2646 * addressing. Cast to (cont_entry_t *) for
2647 * that.
2648 */
2649
2650 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2651
2652 cont_pkt64->entry_count = 1;
2653 cont_pkt64->sys_define = 0;
2654
2655 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2656 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2657
2658 /* Load continuation entry data segments */
2659 for (cnt = 0;
2660 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2661 cnt++, prm->seg_cnt--) {
2662 *dword_ptr++ =
2663 cpu_to_le32(pci_dma_lo32
2664 (sg_dma_address(prm->sg)));
2665 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2666 (sg_dma_address(prm->sg)));
2667 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2668
2669 prm->sg = sg_next(prm->sg);
2670 }
2671 }
2672 }
2673
2674 /*
2675 * ha->hardware_lock supposed to be held on entry. We have already made sure
2676 * that there is sufficient amount of request entries to not drop it.
2677 */
2678 static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2679 {
2680 int cnt;
2681 uint32_t *dword_ptr;
2682 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2683
2684 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2685
2686 /* Setup packet address segment pointer */
2687 dword_ptr = pkt24->u.status0.dseg_0_address;
2688
2689 /* Set total data segment count */
2690 if (prm->seg_cnt)
2691 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2692
2693 if (prm->seg_cnt == 0) {
2694 /* No data transfer */
2695 *dword_ptr++ = 0;
2696 *dword_ptr = 0;
2697 return;
2698 }
2699
2700 /* If scatter gather */
2701
2702 /* Load command entry data segments */
2703 for (cnt = 0;
2704 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2705 cnt++, prm->seg_cnt--) {
2706 *dword_ptr++ =
2707 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2708
2709 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2710 sg_dma_address(prm->sg)));
2711
2712 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2713
2714 prm->sg = sg_next(prm->sg);
2715 }
2716
2717 qlt_load_cont_data_segments(prm);
2718 }
2719
2720 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2721 {
2722 return cmd->bufflen > 0;
2723 }
2724
2725 static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2726 {
2727 struct qla_tgt_cmd *cmd;
2728 struct scsi_qla_host *vha;
2729
2730 /* asc 0x10=dif error */
2731 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2732 cmd = prm->cmd;
2733 vha = cmd->vha;
2734 /* ASCQ */
2735 switch (prm->sense_buffer[13]) {
2736 case 1:
2737 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
2738 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2739 "se_cmd=%p tag[%x]",
2740 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2741 cmd->atio.u.isp24.exchange_addr);
2742 break;
2743 case 2:
2744 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
2745 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2746 "se_cmd=%p tag[%x]",
2747 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2748 cmd->atio.u.isp24.exchange_addr);
2749 break;
2750 case 3:
2751 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
2752 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2753 "se_cmd=%p tag[%x]",
2754 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2755 cmd->atio.u.isp24.exchange_addr);
2756 break;
2757 default:
2758 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
2759 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2760 "se_cmd=%p tag[%x]",
2761 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2762 cmd->atio.u.isp24.exchange_addr);
2763 break;
2764 }
2765 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
2766 }
2767 }
2768
2769 /*
2770 * Called without ha->hardware_lock held
2771 */
2772 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2773 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2774 uint32_t *full_req_cnt)
2775 {
2776 struct se_cmd *se_cmd = &cmd->se_cmd;
2777 struct qla_qpair *qpair = cmd->qpair;
2778
2779 prm->cmd = cmd;
2780 prm->tgt = cmd->tgt;
2781 prm->pkt = NULL;
2782 prm->rq_result = scsi_status;
2783 prm->sense_buffer = &cmd->sense_buffer[0];
2784 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2785 prm->sg = NULL;
2786 prm->seg_cnt = -1;
2787 prm->req_cnt = 1;
2788 prm->residual = 0;
2789 prm->add_status_pkt = 0;
2790 prm->prot_sg = NULL;
2791 prm->prot_seg_cnt = 0;
2792 prm->tot_dsds = 0;
2793
2794 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2795 if (qlt_pci_map_calc_cnt(prm) != 0)
2796 return -EAGAIN;
2797 }
2798
2799 *full_req_cnt = prm->req_cnt;
2800
2801 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2802 prm->residual = se_cmd->residual_count;
2803 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
2804 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2805 prm->residual, se_cmd->tag,
2806 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2807 cmd->bufflen, prm->rq_result);
2808 prm->rq_result |= SS_RESIDUAL_UNDER;
2809 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2810 prm->residual = se_cmd->residual_count;
2811 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
2812 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2813 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2814 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2815 prm->rq_result |= SS_RESIDUAL_OVER;
2816 }
2817
2818 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2819 /*
2820 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2821 * ignored in *xmit_response() below
2822 */
2823 if (qlt_has_data(cmd)) {
2824 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2825 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2826 (prm->rq_result != 0))) {
2827 prm->add_status_pkt = 1;
2828 (*full_req_cnt)++;
2829 }
2830 }
2831 }
2832
2833 return 0;
2834 }
2835
2836 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2837 int sending_sense)
2838 {
2839 if (cmd->qpair->enable_class_2)
2840 return 0;
2841
2842 if (sending_sense)
2843 return cmd->conf_compl_supported;
2844 else
2845 return cmd->qpair->enable_explicit_conf &&
2846 cmd->conf_compl_supported;
2847 }
2848
2849 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2850 struct qla_tgt_prm *prm)
2851 {
2852 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2853 (uint32_t)sizeof(ctio->u.status1.sense_data));
2854 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2855 if (qlt_need_explicit_conf(prm->cmd, 0)) {
2856 ctio->u.status0.flags |= cpu_to_le16(
2857 CTIO7_FLAGS_EXPLICIT_CONFORM |
2858 CTIO7_FLAGS_CONFORM_REQ);
2859 }
2860 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2861 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2862 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2863 int i;
2864
2865 if (qlt_need_explicit_conf(prm->cmd, 1)) {
2866 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2867 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2868 "Skipping EXPLICIT_CONFORM and "
2869 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2870 "non GOOD status\n");
2871 goto skip_explict_conf;
2872 }
2873 ctio->u.status1.flags |= cpu_to_le16(
2874 CTIO7_FLAGS_EXPLICIT_CONFORM |
2875 CTIO7_FLAGS_CONFORM_REQ);
2876 }
2877 skip_explict_conf:
2878 ctio->u.status1.flags &=
2879 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2880 ctio->u.status1.flags |=
2881 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2882 ctio->u.status1.scsi_status |=
2883 cpu_to_le16(SS_SENSE_LEN_VALID);
2884 ctio->u.status1.sense_length =
2885 cpu_to_le16(prm->sense_buffer_len);
2886 for (i = 0; i < prm->sense_buffer_len/4; i++)
2887 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2888 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2889
2890 qlt_print_dif_err(prm);
2891
2892 } else {
2893 ctio->u.status1.flags &=
2894 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2895 ctio->u.status1.flags |=
2896 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2897 ctio->u.status1.sense_length = 0;
2898 memset(ctio->u.status1.sense_data, 0,
2899 sizeof(ctio->u.status1.sense_data));
2900 }
2901
2902 /* Sense with len > 24, is it possible ??? */
2903 }
2904
2905 static inline int
2906 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2907 {
2908 switch (se_cmd->prot_op) {
2909 case TARGET_PROT_DOUT_INSERT:
2910 case TARGET_PROT_DIN_STRIP:
2911 if (ql2xenablehba_err_chk >= 1)
2912 return 1;
2913 break;
2914 case TARGET_PROT_DOUT_PASS:
2915 case TARGET_PROT_DIN_PASS:
2916 if (ql2xenablehba_err_chk >= 2)
2917 return 1;
2918 break;
2919 case TARGET_PROT_DIN_INSERT:
2920 case TARGET_PROT_DOUT_STRIP:
2921 return 1;
2922 default:
2923 break;
2924 }
2925 return 0;
2926 }
2927
2928 static inline int
2929 qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2930 {
2931 switch (se_cmd->prot_op) {
2932 case TARGET_PROT_DIN_INSERT:
2933 case TARGET_PROT_DOUT_INSERT:
2934 case TARGET_PROT_DIN_STRIP:
2935 case TARGET_PROT_DOUT_STRIP:
2936 case TARGET_PROT_DIN_PASS:
2937 case TARGET_PROT_DOUT_PASS:
2938 return 1;
2939 default:
2940 return 0;
2941 }
2942 return 0;
2943 }
2944
2945 /*
2946 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
2947 */
2948 static void
2949 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2950 uint16_t *pfw_prot_opts)
2951 {
2952 struct se_cmd *se_cmd = &cmd->se_cmd;
2953 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2954 scsi_qla_host_t *vha = cmd->tgt->vha;
2955 struct qla_hw_data *ha = vha->hw;
2956 uint32_t t32 = 0;
2957
2958 /*
2959 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
2960 * have been immplemented by TCM, before AppTag is avail.
2961 * Look for modesense_handlers[]
2962 */
2963 ctx->app_tag = 0;
2964 ctx->app_tag_mask[0] = 0x0;
2965 ctx->app_tag_mask[1] = 0x0;
2966
2967 if (IS_PI_UNINIT_CAPABLE(ha)) {
2968 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2969 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2970 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2971 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2972 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2973 }
2974
2975 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2976
2977 switch (se_cmd->prot_type) {
2978 case TARGET_DIF_TYPE0_PROT:
2979 /*
2980 * No check for ql2xenablehba_err_chk, as it
2981 * would be an I/O error if hba tag generation
2982 * is not done.
2983 */
2984 ctx->ref_tag = cpu_to_le32(lba);
2985 /* enable ALL bytes of the ref tag */
2986 ctx->ref_tag_mask[0] = 0xff;
2987 ctx->ref_tag_mask[1] = 0xff;
2988 ctx->ref_tag_mask[2] = 0xff;
2989 ctx->ref_tag_mask[3] = 0xff;
2990 break;
2991 case TARGET_DIF_TYPE1_PROT:
2992 /*
2993 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2994 * REF tag, and 16 bit app tag.
2995 */
2996 ctx->ref_tag = cpu_to_le32(lba);
2997 if (!qla_tgt_ref_mask_check(se_cmd) ||
2998 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2999 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
3000 break;
3001 }
3002 /* enable ALL bytes of the ref tag */
3003 ctx->ref_tag_mask[0] = 0xff;
3004 ctx->ref_tag_mask[1] = 0xff;
3005 ctx->ref_tag_mask[2] = 0xff;
3006 ctx->ref_tag_mask[3] = 0xff;
3007 break;
3008 case TARGET_DIF_TYPE2_PROT:
3009 /*
3010 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
3011 * tag has to match LBA in CDB + N
3012 */
3013 ctx->ref_tag = cpu_to_le32(lba);
3014 if (!qla_tgt_ref_mask_check(se_cmd) ||
3015 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
3016 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
3017 break;
3018 }
3019 /* enable ALL bytes of the ref tag */
3020 ctx->ref_tag_mask[0] = 0xff;
3021 ctx->ref_tag_mask[1] = 0xff;
3022 ctx->ref_tag_mask[2] = 0xff;
3023 ctx->ref_tag_mask[3] = 0xff;
3024 break;
3025 case TARGET_DIF_TYPE3_PROT:
3026 /* For TYPE 3 protection: 16 bit GUARD only */
3027 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
3028 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
3029 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
3030 break;
3031 }
3032 }
3033
3034 static inline int
3035 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
3036 {
3037 uint32_t *cur_dsd;
3038 uint32_t transfer_length = 0;
3039 uint32_t data_bytes;
3040 uint32_t dif_bytes;
3041 uint8_t bundling = 1;
3042 struct crc_context *crc_ctx_pkt = NULL;
3043 struct qla_hw_data *ha;
3044 struct ctio_crc2_to_fw *pkt;
3045 dma_addr_t crc_ctx_dma;
3046 uint16_t fw_prot_opts = 0;
3047 struct qla_tgt_cmd *cmd = prm->cmd;
3048 struct se_cmd *se_cmd = &cmd->se_cmd;
3049 uint32_t h;
3050 struct atio_from_isp *atio = &prm->cmd->atio;
3051 struct qla_tc_param tc;
3052 uint16_t t16;
3053 scsi_qla_host_t *vha = cmd->vha;
3054
3055 ha = vha->hw;
3056
3057 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
3058 prm->pkt = pkt;
3059 memset(pkt, 0, sizeof(*pkt));
3060
3061 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
3062 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
3063 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
3064 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
3065
3066 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
3067 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
3068 bundling = 0;
3069
3070 /* Compute dif len and adjust data len to incude protection */
3071 data_bytes = cmd->bufflen;
3072 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
3073
3074 switch (se_cmd->prot_op) {
3075 case TARGET_PROT_DIN_INSERT:
3076 case TARGET_PROT_DOUT_STRIP:
3077 transfer_length = data_bytes;
3078 if (cmd->prot_sg_cnt)
3079 data_bytes += dif_bytes;
3080 break;
3081 case TARGET_PROT_DIN_STRIP:
3082 case TARGET_PROT_DOUT_INSERT:
3083 case TARGET_PROT_DIN_PASS:
3084 case TARGET_PROT_DOUT_PASS:
3085 transfer_length = data_bytes + dif_bytes;
3086 break;
3087 default:
3088 BUG();
3089 break;
3090 }
3091
3092 if (!qlt_hba_err_chk_enabled(se_cmd))
3093 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
3094 /* HBA error checking enabled */
3095 else if (IS_PI_UNINIT_CAPABLE(ha)) {
3096 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
3097 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
3098 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
3099 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
3100 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
3101 }
3102
3103 switch (se_cmd->prot_op) {
3104 case TARGET_PROT_DIN_INSERT:
3105 case TARGET_PROT_DOUT_INSERT:
3106 fw_prot_opts |= PO_MODE_DIF_INSERT;
3107 break;
3108 case TARGET_PROT_DIN_STRIP:
3109 case TARGET_PROT_DOUT_STRIP:
3110 fw_prot_opts |= PO_MODE_DIF_REMOVE;
3111 break;
3112 case TARGET_PROT_DIN_PASS:
3113 case TARGET_PROT_DOUT_PASS:
3114 fw_prot_opts |= PO_MODE_DIF_PASS;
3115 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
3116 break;
3117 default:/* Normal Request */
3118 fw_prot_opts |= PO_MODE_DIF_PASS;
3119 break;
3120 }
3121
3122 /* ---- PKT ---- */
3123 /* Update entry type to indicate Command Type CRC_2 IOCB */
3124 pkt->entry_type = CTIO_CRC2;
3125 pkt->entry_count = 1;
3126 pkt->vp_index = cmd->vp_idx;
3127
3128 h = qlt_make_handle(qpair);
3129 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
3130 /*
3131 * CTIO type 7 from the firmware doesn't provide a way to
3132 * know the initiator's LOOP ID, hence we can't find
3133 * the session and, so, the command.
3134 */
3135 return -EAGAIN;
3136 } else
3137 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
3138
3139 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
3140 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
3141 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
3142 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3143 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3144 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3145 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3146 pkt->exchange_addr = atio->u.isp24.exchange_addr;
3147
3148 /* silence compile warning */
3149 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3150 pkt->ox_id = cpu_to_le16(t16);
3151
3152 t16 = (atio->u.isp24.attr << 9);
3153 pkt->flags |= cpu_to_le16(t16);
3154 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
3155
3156 /* Set transfer direction */
3157 if (cmd->dma_data_direction == DMA_TO_DEVICE)
3158 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
3159 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
3160 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
3161
3162 pkt->dseg_count = prm->tot_dsds;
3163 /* Fibre channel byte count */
3164 pkt->transfer_length = cpu_to_le32(transfer_length);
3165
3166 /* ----- CRC context -------- */
3167
3168 /* Allocate CRC context from global pool */
3169 crc_ctx_pkt = cmd->ctx =
3170 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
3171
3172 if (!crc_ctx_pkt)
3173 goto crc_queuing_error;
3174
3175 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3176 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3177
3178 /* Set handle */
3179 crc_ctx_pkt->handle = pkt->handle;
3180
3181 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
3182
3183 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
3184 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
3185 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
3186
3187 if (!bundling) {
3188 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
3189 } else {
3190 /*
3191 * Configure Bundling if we need to fetch interlaving
3192 * protection PCI accesses
3193 */
3194 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3195 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3196 crc_ctx_pkt->u.bundling.dseg_count =
3197 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3198 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
3199 }
3200
3201 /* Finish the common fields of CRC pkt */
3202 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3203 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3204 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
3205 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
3206
3207 memset((uint8_t *)&tc, 0 , sizeof(tc));
3208 tc.vha = vha;
3209 tc.blk_sz = cmd->blk_sz;
3210 tc.bufflen = cmd->bufflen;
3211 tc.sg = cmd->sg;
3212 tc.prot_sg = cmd->prot_sg;
3213 tc.ctx = crc_ctx_pkt;
3214 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
3215
3216 /* Walks data segments */
3217 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
3218
3219 if (!bundling && prm->prot_seg_cnt) {
3220 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
3221 prm->tot_dsds, &tc))
3222 goto crc_queuing_error;
3223 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
3224 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
3225 goto crc_queuing_error;
3226
3227 if (bundling && prm->prot_seg_cnt) {
3228 /* Walks dif segments */
3229 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
3230
3231 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3232 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
3233 prm->prot_seg_cnt, &tc))
3234 goto crc_queuing_error;
3235 }
3236 return QLA_SUCCESS;
3237
3238 crc_queuing_error:
3239 /* Cleanup will be performed by the caller */
3240 qpair->req->outstanding_cmds[h] = NULL;
3241
3242 return QLA_FUNCTION_FAILED;
3243 }
3244
3245 /*
3246 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3247 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3248 */
3249 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3250 uint8_t scsi_status)
3251 {
3252 struct scsi_qla_host *vha = cmd->vha;
3253 struct qla_qpair *qpair = cmd->qpair;
3254 struct ctio7_to_24xx *pkt;
3255 struct qla_tgt_prm prm;
3256 uint32_t full_req_cnt = 0;
3257 unsigned long flags = 0;
3258 int res;
3259
3260 if (cmd->sess && cmd->sess->deleted) {
3261 cmd->state = QLA_TGT_STATE_PROCESSED;
3262 if (cmd->sess->logout_completed)
3263 /* no need to terminate. FW already freed exchange. */
3264 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3265 else
3266 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
3267 return 0;
3268 }
3269
3270 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
3271 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
3272 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3273 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3274 &cmd->se_cmd, qpair->id);
3275
3276 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3277 &full_req_cnt);
3278 if (unlikely(res != 0)) {
3279 return res;
3280 }
3281
3282 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3283
3284 if (xmit_type == QLA_TGT_XMIT_STATUS)
3285 qpair->tgt_counters.core_qla_snd_status++;
3286 else
3287 qpair->tgt_counters.core_qla_que_buf++;
3288
3289 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
3290 /*
3291 * Either the port is not online or this request was from
3292 * previous life, just abort the processing.
3293 */
3294 cmd->state = QLA_TGT_STATE_PROCESSED;
3295 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3296 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3297 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3298 vha->flags.online, qla2x00_reset_active(vha),
3299 cmd->reset_count, qpair->chip_reset);
3300 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3301 return 0;
3302 }
3303
3304 /* Does F/W have an IOCBs for this request */
3305 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
3306 if (unlikely(res))
3307 goto out_unmap_unlock;
3308
3309 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3310 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3311 else
3312 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3313 if (unlikely(res != 0)) {
3314 qpair->req->cnt += full_req_cnt;
3315 goto out_unmap_unlock;
3316 }
3317
3318 pkt = (struct ctio7_to_24xx *)prm.pkt;
3319
3320 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3321 pkt->u.status0.flags |=
3322 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
3323 CTIO7_FLAGS_STATUS_MODE_0);
3324
3325 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3326 qlt_load_data_segments(&prm);
3327
3328 if (prm.add_status_pkt == 0) {
3329 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3330 pkt->u.status0.scsi_status =
3331 cpu_to_le16(prm.rq_result);
3332 pkt->u.status0.residual =
3333 cpu_to_le32(prm.residual);
3334 pkt->u.status0.flags |= cpu_to_le16(
3335 CTIO7_FLAGS_SEND_STATUS);
3336 if (qlt_need_explicit_conf(cmd, 0)) {
3337 pkt->u.status0.flags |=
3338 cpu_to_le16(
3339 CTIO7_FLAGS_EXPLICIT_CONFORM |
3340 CTIO7_FLAGS_CONFORM_REQ);
3341 }
3342 }
3343
3344 } else {
3345 /*
3346 * We have already made sure that there is sufficient
3347 * amount of request entries to not drop HW lock in
3348 * req_pkt().
3349 */
3350 struct ctio7_to_24xx *ctio =
3351 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3352 qpair->req);
3353
3354 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
3355 "Building additional status packet 0x%p.\n",
3356 ctio);
3357
3358 /*
3359 * T10Dif: ctio_crc2_to_fw overlay ontop of
3360 * ctio7_to_24xx
3361 */
3362 memcpy(ctio, pkt, sizeof(*ctio));
3363 /* reset back to CTIO7 */
3364 ctio->entry_count = 1;
3365 ctio->entry_type = CTIO_TYPE7;
3366 ctio->dseg_count = 0;
3367 ctio->u.status1.flags &= ~cpu_to_le16(
3368 CTIO7_FLAGS_DATA_IN);
3369
3370 /* Real finish is ctio_m1's finish */
3371 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
3372 pkt->u.status0.flags |= cpu_to_le16(
3373 CTIO7_FLAGS_DONT_RET_CTIO);
3374
3375 /* qlt_24xx_init_ctio_to_isp will correct
3376 * all neccessary fields that's part of CTIO7.
3377 * There should be no residual of CTIO-CRC2 data.
3378 */
3379 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3380 &prm);
3381 }
3382 } else
3383 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3384
3385
3386 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
3387 spin_lock(&cmd->cmd_lock);
3388 cmd->cmd_sent_to_fw = 1;
3389 spin_unlock(&cmd->cmd_lock);
3390 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3391
3392 /* Memory Barrier */
3393 wmb();
3394 if (qpair->reqq_start_iocbs)
3395 qpair->reqq_start_iocbs(qpair);
3396 else
3397 qla2x00_start_iocbs(vha, qpair->req);
3398 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3399
3400 return 0;
3401
3402 out_unmap_unlock:
3403 qlt_unmap_sg(vha, cmd);
3404 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3405
3406 return res;
3407 }
3408 EXPORT_SYMBOL(qlt_xmit_response);
3409
3410 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3411 {
3412 struct ctio7_to_24xx *pkt;
3413 struct scsi_qla_host *vha = cmd->vha;
3414 struct qla_tgt *tgt = cmd->tgt;
3415 struct qla_tgt_prm prm;
3416 unsigned long flags = 0;
3417 int res = 0;
3418 struct qla_qpair *qpair = cmd->qpair;
3419
3420 memset(&prm, 0, sizeof(prm));
3421 prm.cmd = cmd;
3422 prm.tgt = tgt;
3423 prm.sg = NULL;
3424 prm.req_cnt = 1;
3425
3426 /* Calculate number of entries and segments required */
3427 if (qlt_pci_map_calc_cnt(&prm) != 0)
3428 return -EAGAIN;
3429
3430 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3431 (cmd->sess && cmd->sess->deleted)) {
3432 /*
3433 * Either the port is not online or this request was from
3434 * previous life, just abort the processing.
3435 */
3436 cmd->state = QLA_TGT_STATE_NEED_DATA;
3437 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3438 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3439 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3440 vha->flags.online, qla2x00_reset_active(vha),
3441 cmd->reset_count, qpair->chip_reset);
3442 return 0;
3443 }
3444
3445 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3446 /* Does F/W have an IOCBs for this request */
3447 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
3448 if (res != 0)
3449 goto out_unlock_free_unmap;
3450 if (cmd->se_cmd.prot_op)
3451 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3452 else
3453 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3454
3455 if (unlikely(res != 0)) {
3456 qpair->req->cnt += prm.req_cnt;
3457 goto out_unlock_free_unmap;
3458 }
3459
3460 pkt = (struct ctio7_to_24xx *)prm.pkt;
3461 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
3462 CTIO7_FLAGS_STATUS_MODE_0);
3463
3464 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3465 qlt_load_data_segments(&prm);
3466
3467 cmd->state = QLA_TGT_STATE_NEED_DATA;
3468 spin_lock(&cmd->cmd_lock);
3469 cmd->cmd_sent_to_fw = 1;
3470 spin_unlock(&cmd->cmd_lock);
3471 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3472
3473 /* Memory Barrier */
3474 wmb();
3475 if (qpair->reqq_start_iocbs)
3476 qpair->reqq_start_iocbs(qpair);
3477 else
3478 qla2x00_start_iocbs(vha, qpair->req);
3479 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3480
3481 return res;
3482
3483 out_unlock_free_unmap:
3484 qlt_unmap_sg(vha, cmd);
3485 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3486
3487 return res;
3488 }
3489 EXPORT_SYMBOL(qlt_rdy_to_xfer);
3490
3491
3492 /*
3493 * it is assumed either hardware_lock or qpair lock is held.
3494 */
3495 static void
3496 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
3497 struct ctio_crc_from_fw *sts)
3498 {
3499 uint8_t *ap = &sts->actual_dif[0];
3500 uint8_t *ep = &sts->expected_dif[0];
3501 uint64_t lba = cmd->se_cmd.t_task_lba;
3502 uint8_t scsi_status, sense_key, asc, ascq;
3503 unsigned long flags;
3504 struct scsi_qla_host *vha = cmd->vha;
3505
3506 cmd->trc_flags |= TRC_DIF_ERR;
3507
3508 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3509 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3510 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
3511
3512 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3513 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3514 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
3515
3516 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3517 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
3518
3519 scsi_status = sense_key = asc = ascq = 0;
3520
3521 /* check appl tag */
3522 if (cmd->e_app_tag != cmd->a_app_tag) {
3523 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3524 "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]",
3525 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3526 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3527 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3528 cmd->atio.u.isp24.fcp_hdr.ox_id);
3529
3530 cmd->dif_err_code = DIF_ERR_APP;
3531 scsi_status = SAM_STAT_CHECK_CONDITION;
3532 sense_key = ABORTED_COMMAND;
3533 asc = 0x10;
3534 ascq = 0x2;
3535 }
3536
3537 /* check ref tag */
3538 if (cmd->e_ref_tag != cmd->a_ref_tag) {
3539 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3540 "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] ",
3541 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3542 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3543 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3544 cmd->atio.u.isp24.fcp_hdr.ox_id);
3545
3546 cmd->dif_err_code = DIF_ERR_REF;
3547 scsi_status = SAM_STAT_CHECK_CONDITION;
3548 sense_key = ABORTED_COMMAND;
3549 asc = 0x10;
3550 ascq = 0x3;
3551 goto out;
3552 }
3553
3554 /* check guard */
3555 if (cmd->e_guard != cmd->a_guard) {
3556 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3557 "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]",
3558 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3559 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3560 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3561 cmd->atio.u.isp24.fcp_hdr.ox_id);
3562
3563 cmd->dif_err_code = DIF_ERR_GRD;
3564 scsi_status = SAM_STAT_CHECK_CONDITION;
3565 sense_key = ABORTED_COMMAND;
3566 asc = 0x10;
3567 ascq = 0x1;
3568 }
3569 out:
3570 switch (cmd->state) {
3571 case QLA_TGT_STATE_NEED_DATA:
3572 /* handle_data will load DIF error code */
3573 cmd->state = QLA_TGT_STATE_DATA_IN;
3574 vha->hw->tgt.tgt_ops->handle_data(cmd);
3575 break;
3576 default:
3577 spin_lock_irqsave(&cmd->cmd_lock, flags);
3578 if (cmd->aborted) {
3579 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3580 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3581 break;
3582 }
3583 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3584
3585 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3586 ascq);
3587 /* assume scsi status gets out on the wire.
3588 * Will not wait for completion.
3589 */
3590 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3591 break;
3592 }
3593 }
3594
3595 /* If hardware_lock held on entry, might drop it, then reaquire */
3596 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3597 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3598 struct imm_ntfy_from_isp *ntfy)
3599 {
3600 struct nack_to_isp *nack;
3601 struct qla_hw_data *ha = vha->hw;
3602 request_t *pkt;
3603 int ret = 0;
3604
3605 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3606 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3607
3608 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3609 if (pkt == NULL) {
3610 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3611 "qla_target(%d): %s failed: unable to allocate "
3612 "request packet\n", vha->vp_idx, __func__);
3613 return -ENOMEM;
3614 }
3615
3616 pkt->entry_type = NOTIFY_ACK_TYPE;
3617 pkt->entry_count = 1;
3618 pkt->handle = QLA_TGT_SKIP_HANDLE;
3619
3620 nack = (struct nack_to_isp *)pkt;
3621 nack->ox_id = ntfy->ox_id;
3622
3623 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3624 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3625 nack->u.isp24.flags = ntfy->u.isp24.flags &
3626 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3627 }
3628
3629 /* terminate */
3630 nack->u.isp24.flags |=
3631 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3632
3633 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3634 nack->u.isp24.status = ntfy->u.isp24.status;
3635 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3636 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3637 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3638 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3639 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3640 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3641
3642 qla2x00_start_iocbs(vha, vha->req);
3643 return ret;
3644 }
3645
3646 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3647 struct imm_ntfy_from_isp *imm, int ha_locked)
3648 {
3649 unsigned long flags = 0;
3650 int rc;
3651
3652 if (ha_locked) {
3653 rc = __qlt_send_term_imm_notif(vha, imm);
3654
3655 #if 0 /* Todo */
3656 if (rc == -ENOMEM)
3657 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3658 #else
3659 if (rc) {
3660 }
3661 #endif
3662 goto done;
3663 }
3664
3665 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3666 rc = __qlt_send_term_imm_notif(vha, imm);
3667
3668 #if 0 /* Todo */
3669 if (rc == -ENOMEM)
3670 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3671 #endif
3672
3673 done:
3674 if (!ha_locked)
3675 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3676 }
3677
3678 /*
3679 * If hardware_lock held on entry, might drop it, then reaquire
3680 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3681 */
3682 static int __qlt_send_term_exchange(struct qla_qpair *qpair,
3683 struct qla_tgt_cmd *cmd,
3684 struct atio_from_isp *atio)
3685 {
3686 struct scsi_qla_host *vha = qpair->vha;
3687 struct ctio7_to_24xx *ctio24;
3688 struct qla_hw_data *ha = vha->hw;
3689 request_t *pkt;
3690 int ret = 0;
3691 uint16_t temp;
3692
3693 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3694
3695 if (cmd)
3696 vha = cmd->vha;
3697
3698 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
3699 if (pkt == NULL) {
3700 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3701 "qla_target(%d): %s failed: unable to allocate "
3702 "request packet\n", vha->vp_idx, __func__);
3703 return -ENOMEM;
3704 }
3705
3706 if (cmd != NULL) {
3707 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3708 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3709 "qla_target(%d): Terminating cmd %p with "
3710 "incorrect state %d\n", vha->vp_idx, cmd,
3711 cmd->state);
3712 } else
3713 ret = 1;
3714 }
3715
3716 qpair->tgt_counters.num_term_xchg_sent++;
3717 pkt->entry_count = 1;
3718 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3719
3720 ctio24 = (struct ctio7_to_24xx *)pkt;
3721 ctio24->entry_type = CTIO_TYPE7;
3722 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
3723 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3724 ctio24->vp_index = vha->vp_idx;
3725 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3726 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3727 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3728 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3729 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3730 CTIO7_FLAGS_TERMINATE;
3731 ctio24->u.status1.flags = cpu_to_le16(temp);
3732 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3733 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3734
3735 /* Memory Barrier */
3736 wmb();
3737 if (qpair->reqq_start_iocbs)
3738 qpair->reqq_start_iocbs(qpair);
3739 else
3740 qla2x00_start_iocbs(vha, qpair->req);
3741 return ret;
3742 }
3743
3744 static void qlt_send_term_exchange(struct qla_qpair *qpair,
3745 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3746 int ul_abort)
3747 {
3748 struct scsi_qla_host *vha;
3749 unsigned long flags = 0;
3750 int rc;
3751
3752 /* why use different vha? NPIV */
3753 if (cmd)
3754 vha = cmd->vha;
3755 else
3756 vha = qpair->vha;
3757
3758 if (ha_locked) {
3759 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3760 if (rc == -ENOMEM)
3761 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3762 goto done;
3763 }
3764 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3765 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3766 if (rc == -ENOMEM)
3767 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3768
3769 done:
3770 if (cmd && !ul_abort && !cmd->aborted) {
3771 if (cmd->sg_mapped)
3772 qlt_unmap_sg(vha, cmd);
3773 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3774 }
3775
3776 if (!ha_locked)
3777 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3778
3779 return;
3780 }
3781
3782 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3783 {
3784 struct list_head free_list;
3785 struct qla_tgt_cmd *cmd, *tcmd;
3786
3787 vha->hw->tgt.leak_exchg_thresh_hold =
3788 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3789
3790 cmd = tcmd = NULL;
3791 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3792 INIT_LIST_HEAD(&free_list);
3793 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3794
3795 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3796 list_del(&cmd->cmd_list);
3797 /* This cmd was never sent to TCM. There is no need
3798 * to schedule free or call free_cmd
3799 */
3800 qlt_free_cmd(cmd);
3801 vha->hw->tgt.num_qfull_cmds_alloc--;
3802 }
3803 }
3804 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3805 }
3806
3807 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3808 {
3809 uint32_t total_leaked;
3810
3811 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3812
3813 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3814 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3815
3816 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3817 "Chip reset due to exchange starvation: %d/%d.\n",
3818 total_leaked, vha->hw->cur_fw_xcb_count);
3819
3820 if (IS_P3P_TYPE(vha->hw))
3821 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3822 else
3823 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3824 qla2xxx_wake_dpc(vha);
3825 }
3826
3827 }
3828
3829 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3830 {
3831 struct qla_tgt *tgt = cmd->tgt;
3832 struct scsi_qla_host *vha = tgt->vha;
3833 struct se_cmd *se_cmd = &cmd->se_cmd;
3834 unsigned long flags;
3835
3836 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3837 "qla_target(%d): terminating exchange for aborted cmd=%p "
3838 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3839 se_cmd->tag);
3840
3841 spin_lock_irqsave(&cmd->cmd_lock, flags);
3842 if (cmd->aborted) {
3843 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3844 /*
3845 * It's normal to see 2 calls in this path:
3846 * 1) XFER Rdy completion + CMD_T_ABORT
3847 * 2) TCM TMR - drain_state_list
3848 */
3849 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3850 "multiple abort. %p transport_state %x, t_state %x, "
3851 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3852 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
3853 return EIO;
3854 }
3855 cmd->aborted = 1;
3856 cmd->trc_flags |= TRC_ABORT;
3857 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3858
3859 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
3860 return 0;
3861 }
3862 EXPORT_SYMBOL(qlt_abort_cmd);
3863
3864 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3865 {
3866 struct fc_port *sess = cmd->sess;
3867
3868 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3869 "%s: se_cmd[%p] ox_id %04x\n",
3870 __func__, &cmd->se_cmd,
3871 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3872
3873 BUG_ON(cmd->cmd_in_wq);
3874
3875 if (cmd->sg_mapped)
3876 qlt_unmap_sg(cmd->vha, cmd);
3877
3878 if (!cmd->q_full)
3879 qlt_decr_num_pend_cmds(cmd->vha);
3880
3881 BUG_ON(cmd->sg_mapped);
3882 cmd->jiffies_at_free = get_jiffies_64();
3883 if (unlikely(cmd->free_sg))
3884 kfree(cmd->sg);
3885
3886 if (!sess || !sess->se_sess) {
3887 WARN_ON(1);
3888 return;
3889 }
3890 cmd->jiffies_at_free = get_jiffies_64();
3891 target_free_tag(sess->se_sess, &cmd->se_cmd);
3892 }
3893 EXPORT_SYMBOL(qlt_free_cmd);
3894
3895 /*
3896 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3897 */
3898 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
3899 struct qla_tgt_cmd *cmd, uint32_t status)
3900 {
3901 int term = 0;
3902 struct scsi_qla_host *vha = qpair->vha;
3903
3904 if (cmd->se_cmd.prot_op)
3905 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
3906 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3907 "se_cmd=%p tag[%x] op %#x/%s",
3908 cmd->lba, cmd->lba,
3909 cmd->num_blks, &cmd->se_cmd,
3910 cmd->atio.u.isp24.exchange_addr,
3911 cmd->se_cmd.prot_op,
3912 prot_op_str(cmd->se_cmd.prot_op));
3913
3914 if (ctio != NULL) {
3915 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3916 term = !(c->flags &
3917 cpu_to_le16(OF_TERM_EXCH));
3918 } else
3919 term = 1;
3920
3921 if (term)
3922 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
3923
3924 return term;
3925 }
3926
3927
3928 /* ha->hardware_lock supposed to be held on entry */
3929 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3930 struct rsp_que *rsp, uint32_t handle, void *ctio)
3931 {
3932 void *cmd = NULL;
3933 struct req_que *req;
3934 int qid = GET_QID(handle);
3935 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
3936
3937 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3938 return NULL;
3939
3940 if (qid == rsp->req->id) {
3941 req = rsp->req;
3942 } else if (vha->hw->req_q_map[qid]) {
3943 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3944 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3945 vha->vp_idx, rsp->id, handle);
3946 req = vha->hw->req_q_map[qid];
3947 } else {
3948 return NULL;
3949 }
3950
3951 h &= QLA_CMD_HANDLE_MASK;
3952
3953 if (h != QLA_TGT_NULL_HANDLE) {
3954 if (unlikely(h >= req->num_outstanding_cmds)) {
3955 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3956 "qla_target(%d): Wrong handle %x received\n",
3957 vha->vp_idx, handle);
3958 return NULL;
3959 }
3960
3961 cmd = (void *) req->outstanding_cmds[h];
3962 if (unlikely(cmd == NULL)) {
3963 ql_dbg(ql_dbg_async, vha, 0xe053,
3964 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3965 vha->vp_idx, handle, req->id, rsp->id);
3966 return NULL;
3967 }
3968 req->outstanding_cmds[h] = NULL;
3969 } else if (ctio != NULL) {
3970 /* We can't get loop ID from CTIO7 */
3971 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3972 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3973 "support NULL handles\n", vha->vp_idx);
3974 return NULL;
3975 }
3976
3977 return cmd;
3978 }
3979
3980 /* hardware_lock should be held by caller. */
3981 void
3982 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3983 {
3984 struct qla_hw_data *ha = vha->hw;
3985
3986 if (cmd->sg_mapped)
3987 qlt_unmap_sg(vha, cmd);
3988
3989 /* TODO: fix debug message type and ids. */
3990 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3991 ql_dbg(ql_dbg_io, vha, 0xff00,
3992 "HOST-ABORT: state=PROCESSED.\n");
3993 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3994 cmd->write_data_transferred = 0;
3995 cmd->state = QLA_TGT_STATE_DATA_IN;
3996
3997 ql_dbg(ql_dbg_io, vha, 0xff01,
3998 "HOST-ABORT: state=DATA_IN.\n");
3999
4000 ha->tgt.tgt_ops->handle_data(cmd);
4001 return;
4002 } else {
4003 ql_dbg(ql_dbg_io, vha, 0xff03,
4004 "HOST-ABORT: state=BAD(%d).\n",
4005 cmd->state);
4006 dump_stack();
4007 }
4008
4009 cmd->trc_flags |= TRC_FLUSH;
4010 ha->tgt.tgt_ops->free_cmd(cmd);
4011 }
4012
4013 /*
4014 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4015 */
4016 static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
4017 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
4018 {
4019 struct qla_hw_data *ha = vha->hw;
4020 struct se_cmd *se_cmd;
4021 struct qla_tgt_cmd *cmd;
4022 struct qla_qpair *qpair = rsp->qpair;
4023
4024 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
4025 /* That could happen only in case of an error/reset/abort */
4026 if (status != CTIO_SUCCESS) {
4027 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
4028 "Intermediate CTIO received"
4029 " (status %x)\n", status);
4030 }
4031 return;
4032 }
4033
4034 cmd = (struct qla_tgt_cmd *)qlt_ctio_to_cmd(vha, rsp, handle, ctio);
4035 if (cmd == NULL)
4036 return;
4037
4038 se_cmd = &cmd->se_cmd;
4039 cmd->cmd_sent_to_fw = 0;
4040
4041 qlt_unmap_sg(vha, cmd);
4042
4043 if (unlikely(status != CTIO_SUCCESS)) {
4044 switch (status & 0xFFFF) {
4045 case CTIO_INVALID_RX_ID:
4046 if (printk_ratelimit())
4047 dev_info(&vha->hw->pdev->dev,
4048 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n",
4049 vha->vp_idx, cmd->atio.u.isp24.attr,
4050 ((cmd->ctio_flags >> 9) & 0xf),
4051 cmd->ctio_flags);
4052
4053 break;
4054 case CTIO_LIP_RESET:
4055 case CTIO_TARGET_RESET:
4056 case CTIO_ABORTED:
4057 /* driver request abort via Terminate exchange */
4058 case CTIO_TIMEOUT:
4059 /* They are OK */
4060 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
4061 "qla_target(%d): CTIO with "
4062 "status %#x received, state %x, se_cmd %p, "
4063 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
4064 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
4065 status, cmd->state, se_cmd);
4066 break;
4067
4068 case CTIO_PORT_LOGGED_OUT:
4069 case CTIO_PORT_UNAVAILABLE:
4070 {
4071 int logged_out =
4072 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
4073
4074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
4075 "qla_target(%d): CTIO with %s status %x "
4076 "received (state %x, se_cmd %p)\n", vha->vp_idx,
4077 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
4078 status, cmd->state, se_cmd);
4079
4080 if (logged_out && cmd->sess) {
4081 /*
4082 * Session is already logged out, but we need
4083 * to notify initiator, who's not aware of this
4084 */
4085 cmd->sess->send_els_logo = 1;
4086 ql_dbg(ql_dbg_disc, vha, 0x20f8,
4087 "%s %d %8phC post del sess\n",
4088 __func__, __LINE__, cmd->sess->port_name);
4089
4090 qlt_schedule_sess_for_deletion(cmd->sess);
4091 }
4092 break;
4093 }
4094 case CTIO_DIF_ERROR: {
4095 struct ctio_crc_from_fw *crc =
4096 (struct ctio_crc_from_fw *)ctio;
4097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
4098 "qla_target(%d): CTIO with DIF_ERROR status %x "
4099 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
4100 "expect_dif[0x%llx]\n",
4101 vha->vp_idx, status, cmd->state, se_cmd,
4102 *((u64 *)&crc->actual_dif[0]),
4103 *((u64 *)&crc->expected_dif[0]));
4104
4105 qlt_handle_dif_error(qpair, cmd, ctio);
4106 return;
4107 }
4108 default:
4109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
4110 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
4111 vha->vp_idx, status, cmd->state, se_cmd);
4112 break;
4113 }
4114
4115
4116 /* "cmd->aborted" means
4117 * cmd is already aborted/terminated, we don't
4118 * need to terminate again. The exchange is already
4119 * cleaned up/freed at FW level. Just cleanup at driver
4120 * level.
4121 */
4122 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
4123 (!cmd->aborted)) {
4124 cmd->trc_flags |= TRC_CTIO_ERR;
4125 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
4126 return;
4127 }
4128 }
4129
4130 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
4131 cmd->trc_flags |= TRC_CTIO_DONE;
4132 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
4133 cmd->state = QLA_TGT_STATE_DATA_IN;
4134
4135 if (status == CTIO_SUCCESS)
4136 cmd->write_data_transferred = 1;
4137
4138 ha->tgt.tgt_ops->handle_data(cmd);
4139 return;
4140 } else if (cmd->aborted) {
4141 cmd->trc_flags |= TRC_CTIO_ABORTED;
4142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
4143 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
4144 } else {
4145 cmd->trc_flags |= TRC_CTIO_STRANGE;
4146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
4147 "qla_target(%d): A command in state (%d) should "
4148 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
4149 }
4150
4151 if (unlikely(status != CTIO_SUCCESS) &&
4152 !cmd->aborted) {
4153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
4154 dump_stack();
4155 }
4156
4157 ha->tgt.tgt_ops->free_cmd(cmd);
4158 }
4159
4160 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
4161 uint8_t task_codes)
4162 {
4163 int fcp_task_attr;
4164
4165 switch (task_codes) {
4166 case ATIO_SIMPLE_QUEUE:
4167 fcp_task_attr = TCM_SIMPLE_TAG;
4168 break;
4169 case ATIO_HEAD_OF_QUEUE:
4170 fcp_task_attr = TCM_HEAD_TAG;
4171 break;
4172 case ATIO_ORDERED_QUEUE:
4173 fcp_task_attr = TCM_ORDERED_TAG;
4174 break;
4175 case ATIO_ACA_QUEUE:
4176 fcp_task_attr = TCM_ACA_TAG;
4177 break;
4178 case ATIO_UNTAGGED:
4179 fcp_task_attr = TCM_SIMPLE_TAG;
4180 break;
4181 default:
4182 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4183 "qla_target: unknown task code %x, use ORDERED instead\n",
4184 task_codes);
4185 fcp_task_attr = TCM_ORDERED_TAG;
4186 break;
4187 }
4188
4189 return fcp_task_attr;
4190 }
4191
4192 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
4193 uint8_t *);
4194 /*
4195 * Process context for I/O path into tcm_qla2xxx code
4196 */
4197 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
4198 {
4199 scsi_qla_host_t *vha = cmd->vha;
4200 struct qla_hw_data *ha = vha->hw;
4201 struct fc_port *sess = cmd->sess;
4202 struct atio_from_isp *atio = &cmd->atio;
4203 unsigned char *cdb;
4204 unsigned long flags;
4205 uint32_t data_length;
4206 int ret, fcp_task_attr, data_dir, bidi = 0;
4207 struct qla_qpair *qpair = cmd->qpair;
4208
4209 cmd->cmd_in_wq = 0;
4210 cmd->trc_flags |= TRC_DO_WORK;
4211
4212 if (cmd->aborted) {
4213 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4214 "cmd with tag %u is aborted\n",
4215 cmd->atio.u.isp24.exchange_addr);
4216 goto out_term;
4217 }
4218
4219 spin_lock_init(&cmd->cmd_lock);
4220 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
4221 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
4222
4223 if (atio->u.isp24.fcp_cmnd.rddata &&
4224 atio->u.isp24.fcp_cmnd.wrdata) {
4225 bidi = 1;
4226 data_dir = DMA_TO_DEVICE;
4227 } else if (atio->u.isp24.fcp_cmnd.rddata)
4228 data_dir = DMA_FROM_DEVICE;
4229 else if (atio->u.isp24.fcp_cmnd.wrdata)
4230 data_dir = DMA_TO_DEVICE;
4231 else
4232 data_dir = DMA_NONE;
4233
4234 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4235 atio->u.isp24.fcp_cmnd.task_attr);
4236 data_length = get_datalen_for_atio(atio);
4237
4238 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4239 fcp_task_attr, data_dir, bidi);
4240 if (ret != 0)
4241 goto out_term;
4242 /*
4243 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4244 */
4245 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4246 ha->tgt.tgt_ops->put_sess(sess);
4247 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4248 return;
4249
4250 out_term:
4251 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
4252 /*
4253 * cmd has not sent to target yet, so pass NULL as the second
4254 * argument to qlt_send_term_exchange() and free the memory here.
4255 */
4256 cmd->trc_flags |= TRC_DO_WORK_ERR;
4257 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4258 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
4259
4260 qlt_decr_num_pend_cmds(vha);
4261 target_free_tag(sess->se_sess, &cmd->se_cmd);
4262 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4263
4264 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4265 ha->tgt.tgt_ops->put_sess(sess);
4266 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4267 }
4268
4269 static void qlt_do_work(struct work_struct *work)
4270 {
4271 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
4272 scsi_qla_host_t *vha = cmd->vha;
4273 unsigned long flags;
4274
4275 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4276 list_del(&cmd->cmd_list);
4277 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4278
4279 __qlt_do_work(cmd);
4280 }
4281
4282 void qlt_clr_qp_table(struct scsi_qla_host *vha)
4283 {
4284 unsigned long flags;
4285 struct qla_hw_data *ha = vha->hw;
4286 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4287 void *node;
4288 u64 key = 0;
4289
4290 ql_log(ql_log_info, vha, 0x706c,
4291 "User update Number of Active Qpairs %d\n",
4292 ha->tgt.num_act_qpairs);
4293
4294 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4295
4296 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4297 btree_remove64(&tgt->lun_qpair_map, key);
4298
4299 ha->base_qpair->lun_cnt = 0;
4300 for (key = 0; key < ha->max_qpairs; key++)
4301 if (ha->queue_pair_map[key])
4302 ha->queue_pair_map[key]->lun_cnt = 0;
4303
4304 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4305 }
4306
4307 static void qlt_assign_qpair(struct scsi_qla_host *vha,
4308 struct qla_tgt_cmd *cmd)
4309 {
4310 struct qla_qpair *qpair, *qp;
4311 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4312 struct qla_qpair_hint *h;
4313
4314 if (vha->flags.qpairs_available) {
4315 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4316 if (unlikely(!h)) {
4317 /* spread lun to qpair ratio evently */
4318 int lcnt = 0, rc;
4319 struct scsi_qla_host *base_vha =
4320 pci_get_drvdata(vha->hw->pdev);
4321
4322 qpair = vha->hw->base_qpair;
4323 if (qpair->lun_cnt == 0) {
4324 qpair->lun_cnt++;
4325 h = qla_qpair_to_hint(tgt, qpair);
4326 BUG_ON(!h);
4327 rc = btree_insert64(&tgt->lun_qpair_map,
4328 cmd->unpacked_lun, h, GFP_ATOMIC);
4329 if (rc) {
4330 qpair->lun_cnt--;
4331 ql_log(ql_log_info, vha, 0xd037,
4332 "Unable to insert lun %llx into lun_qpair_map\n",
4333 cmd->unpacked_lun);
4334 }
4335 goto out;
4336 } else {
4337 lcnt = qpair->lun_cnt;
4338 }
4339
4340 h = NULL;
4341 list_for_each_entry(qp, &base_vha->qp_list,
4342 qp_list_elem) {
4343 if (qp->lun_cnt == 0) {
4344 qp->lun_cnt++;
4345 h = qla_qpair_to_hint(tgt, qp);
4346 BUG_ON(!h);
4347 rc = btree_insert64(&tgt->lun_qpair_map,
4348 cmd->unpacked_lun, h, GFP_ATOMIC);
4349 if (rc) {
4350 qp->lun_cnt--;
4351 ql_log(ql_log_info, vha, 0xd038,
4352 "Unable to insert lun %llx into lun_qpair_map\n",
4353 cmd->unpacked_lun);
4354 }
4355 qpair = qp;
4356 goto out;
4357 } else {
4358 if (qp->lun_cnt < lcnt) {
4359 lcnt = qp->lun_cnt;
4360 qpair = qp;
4361 continue;
4362 }
4363 }
4364 }
4365 BUG_ON(!qpair);
4366 qpair->lun_cnt++;
4367 h = qla_qpair_to_hint(tgt, qpair);
4368 BUG_ON(!h);
4369 rc = btree_insert64(&tgt->lun_qpair_map,
4370 cmd->unpacked_lun, h, GFP_ATOMIC);
4371 if (rc) {
4372 qpair->lun_cnt--;
4373 ql_log(ql_log_info, vha, 0xd039,
4374 "Unable to insert lun %llx into lun_qpair_map\n",
4375 cmd->unpacked_lun);
4376 }
4377 }
4378 } else {
4379 h = &tgt->qphints[0];
4380 }
4381 out:
4382 cmd->qpair = h->qpair;
4383 cmd->se_cmd.cpuid = h->cpuid;
4384 }
4385
4386 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
4387 struct fc_port *sess,
4388 struct atio_from_isp *atio)
4389 {
4390 struct se_session *se_sess = sess->se_sess;
4391 struct qla_tgt_cmd *cmd;
4392 int tag, cpu;
4393
4394 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
4395 if (tag < 0)
4396 return NULL;
4397
4398 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4399 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4400 cmd->cmd_type = TYPE_TGT_CMD;
4401 memcpy(&cmd->atio, atio, sizeof(*atio));
4402 cmd->state = QLA_TGT_STATE_NEW;
4403 cmd->tgt = vha->vha_tgt.qla_tgt;
4404 qlt_incr_num_pend_cmds(vha);
4405 cmd->vha = vha;
4406 cmd->se_cmd.map_tag = tag;
4407 cmd->se_cmd.map_cpu = cpu;
4408 cmd->sess = sess;
4409 cmd->loop_id = sess->loop_id;
4410 cmd->conf_compl_supported = sess->conf_compl_supported;
4411
4412 cmd->trc_flags = 0;
4413 cmd->jiffies_at_alloc = get_jiffies_64();
4414
4415 cmd->unpacked_lun = scsilun_to_int(
4416 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4417 qlt_assign_qpair(vha, cmd);
4418 cmd->reset_count = vha->hw->base_qpair->chip_reset;
4419 cmd->vp_idx = vha->vp_idx;
4420
4421 return cmd;
4422 }
4423
4424 /* ha->hardware_lock supposed to be held on entry */
4425 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4426 struct atio_from_isp *atio)
4427 {
4428 struct qla_hw_data *ha = vha->hw;
4429 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4430 struct fc_port *sess;
4431 struct qla_tgt_cmd *cmd;
4432 unsigned long flags;
4433 port_id_t id;
4434
4435 if (unlikely(tgt->tgt_stop)) {
4436 ql_dbg(ql_dbg_io, vha, 0x3061,
4437 "New command while device %p is shutting down\n", tgt);
4438 return -ENODEV;
4439 }
4440
4441 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2];
4442 id.b.area = atio->u.isp24.fcp_hdr.s_id[1];
4443 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0];
4444 if (IS_SW_RESV_ADDR(id))
4445 return -EBUSY;
4446
4447 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4448 if (unlikely(!sess))
4449 return -EFAULT;
4450
4451 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4452 * session deletion, but it's still in sess_del_work wq */
4453 if (sess->deleted) {
4454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
4455 "New command while old session %p is being deleted\n",
4456 sess);
4457 return -EFAULT;
4458 }
4459
4460 /*
4461 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4462 */
4463 if (!kref_get_unless_zero(&sess->sess_kref)) {
4464 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
4465 "%s: kref_get fail, %8phC oxid %x \n",
4466 __func__, sess->port_name,
4467 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4468 return -EFAULT;
4469 }
4470
4471 cmd = qlt_get_tag(vha, sess, atio);
4472 if (!cmd) {
4473 ql_dbg(ql_dbg_io, vha, 0x3062,
4474 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4475 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4476 ha->tgt.tgt_ops->put_sess(sess);
4477 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4478 return -EBUSY;
4479 }
4480
4481 cmd->cmd_in_wq = 1;
4482 cmd->trc_flags |= TRC_NEW_CMD;
4483
4484 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4485 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4486 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4487
4488 INIT_WORK(&cmd->work, qlt_do_work);
4489 if (vha->flags.qpairs_available) {
4490 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4491 } else if (ha->msix_count) {
4492 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4493 queue_work_on(smp_processor_id(), qla_tgt_wq,
4494 &cmd->work);
4495 else
4496 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4497 &cmd->work);
4498 } else {
4499 queue_work(qla_tgt_wq, &cmd->work);
4500 }
4501
4502 return 0;
4503 }
4504
4505 /* ha->hardware_lock supposed to be held on entry */
4506 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
4507 int fn, void *iocb, int flags)
4508 {
4509 struct scsi_qla_host *vha = sess->vha;
4510 struct qla_hw_data *ha = vha->hw;
4511 struct qla_tgt_mgmt_cmd *mcmd;
4512 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4513 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
4514
4515 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4516 if (!mcmd) {
4517 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4518 "qla_target(%d): Allocation of management "
4519 "command failed, some commands and their data could "
4520 "leak\n", vha->vp_idx);
4521 return -ENOMEM;
4522 }
4523 memset(mcmd, 0, sizeof(*mcmd));
4524 mcmd->sess = sess;
4525
4526 if (iocb) {
4527 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4528 sizeof(mcmd->orig_iocb.imm_ntfy));
4529 }
4530 mcmd->tmr_func = fn;
4531 mcmd->flags = flags;
4532 mcmd->reset_count = ha->base_qpair->chip_reset;
4533 mcmd->qpair = h->qpair;
4534 mcmd->vha = vha;
4535 mcmd->se_cmd.cpuid = h->cpuid;
4536 mcmd->unpacked_lun = lun;
4537
4538 switch (fn) {
4539 case QLA_TGT_LUN_RESET:
4540 case QLA_TGT_CLEAR_TS:
4541 case QLA_TGT_ABORT_TS:
4542 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4543 /* drop through */
4544 case QLA_TGT_CLEAR_ACA:
4545 h = qlt_find_qphint(vha, mcmd->unpacked_lun);
4546 mcmd->qpair = h->qpair;
4547 mcmd->se_cmd.cpuid = h->cpuid;
4548 break;
4549
4550 case QLA_TGT_TARGET_RESET:
4551 case QLA_TGT_NEXUS_LOSS_SESS:
4552 case QLA_TGT_NEXUS_LOSS:
4553 case QLA_TGT_ABORT_ALL:
4554 default:
4555 /* no-op */
4556 break;
4557 }
4558
4559 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
4560 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq,
4561 &mcmd->work);
4562
4563 return 0;
4564 }
4565
4566 /* ha->hardware_lock supposed to be held on entry */
4567 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4568 {
4569 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4570 struct qla_hw_data *ha = vha->hw;
4571 struct fc_port *sess;
4572 u64 unpacked_lun;
4573 int fn;
4574 unsigned long flags;
4575
4576 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4577
4578 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4579 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4580 a->u.isp24.fcp_hdr.s_id);
4581 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4582
4583 unpacked_lun =
4584 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4585
4586 if (sess == NULL || sess->deleted)
4587 return -EFAULT;
4588
4589 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4590 }
4591
4592 /* ha->hardware_lock supposed to be held on entry */
4593 static int __qlt_abort_task(struct scsi_qla_host *vha,
4594 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
4595 {
4596 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4597 struct qla_hw_data *ha = vha->hw;
4598 struct qla_tgt_mgmt_cmd *mcmd;
4599 u64 unpacked_lun;
4600 int rc;
4601
4602 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4603 if (mcmd == NULL) {
4604 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4605 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4606 vha->vp_idx, __func__);
4607 return -ENOMEM;
4608 }
4609 memset(mcmd, 0, sizeof(*mcmd));
4610
4611 mcmd->sess = sess;
4612 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4613 sizeof(mcmd->orig_iocb.imm_ntfy));
4614
4615 unpacked_lun =
4616 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4617 mcmd->reset_count = ha->base_qpair->chip_reset;
4618 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
4619 mcmd->qpair = ha->base_qpair;
4620
4621 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
4622 le16_to_cpu(iocb->u.isp2x.seq_id));
4623 if (rc != 0) {
4624 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4625 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4626 vha->vp_idx, rc);
4627 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4628 return -EFAULT;
4629 }
4630
4631 return 0;
4632 }
4633
4634 /* ha->hardware_lock supposed to be held on entry */
4635 static int qlt_abort_task(struct scsi_qla_host *vha,
4636 struct imm_ntfy_from_isp *iocb)
4637 {
4638 struct qla_hw_data *ha = vha->hw;
4639 struct fc_port *sess;
4640 int loop_id;
4641 unsigned long flags;
4642
4643 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4644
4645 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4646 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4647 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4648
4649 if (sess == NULL) {
4650 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4651 "qla_target(%d): task abort for unexisting "
4652 "session\n", vha->vp_idx);
4653 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4654 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4655 }
4656
4657 return __qlt_abort_task(vha, iocb, sess);
4658 }
4659
4660 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4661 {
4662 if (rc != MBS_COMMAND_COMPLETE) {
4663 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4664 "%s: se_sess %p / sess %p from"
4665 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4666 " LOGO failed: %#x\n",
4667 __func__,
4668 fcport->se_sess,
4669 fcport,
4670 fcport->port_name, fcport->loop_id,
4671 fcport->d_id.b.domain, fcport->d_id.b.area,
4672 fcport->d_id.b.al_pa, rc);
4673 }
4674
4675 fcport->logout_completed = 1;
4676 }
4677
4678 /*
4679 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4680 *
4681 * Schedules sessions with matching port_id/loop_id but different wwn for
4682 * deletion. Returns existing session with matching wwn if present.
4683 * Null otherwise.
4684 */
4685 struct fc_port *
4686 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
4687 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
4688 {
4689 struct fc_port *sess = NULL, *other_sess;
4690 uint64_t other_wwn;
4691
4692 *conflict_sess = NULL;
4693
4694 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
4695
4696 other_wwn = wwn_to_u64(other_sess->port_name);
4697
4698 if (wwn == other_wwn) {
4699 WARN_ON(sess);
4700 sess = other_sess;
4701 continue;
4702 }
4703
4704 /* find other sess with nport_id collision */
4705 if (port_id.b24 == other_sess->d_id.b24) {
4706 if (loop_id != other_sess->loop_id) {
4707 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
4708 "Invalidating sess %p loop_id %d wwn %llx.\n",
4709 other_sess, other_sess->loop_id, other_wwn);
4710
4711 /*
4712 * logout_on_delete is set by default, but another
4713 * session that has the same s_id/loop_id combo
4714 * might have cleared it when requested this session
4715 * deletion, so don't touch it
4716 */
4717 qlt_schedule_sess_for_deletion(other_sess);
4718 } else {
4719 /*
4720 * Another wwn used to have our s_id/loop_id
4721 * kill the session, but don't free the loop_id
4722 */
4723 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
4724 "Invalidating sess %p loop_id %d wwn %llx.\n",
4725 other_sess, other_sess->loop_id, other_wwn);
4726
4727 other_sess->keep_nport_handle = 1;
4728 if (other_sess->disc_state != DSC_DELETED)
4729 *conflict_sess = other_sess;
4730 qlt_schedule_sess_for_deletion(other_sess);
4731 }
4732 continue;
4733 }
4734
4735 /* find other sess with nport handle collision */
4736 if ((loop_id == other_sess->loop_id) &&
4737 (loop_id != FC_NO_LOOP_ID)) {
4738 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
4739 "Invalidating sess %p loop_id %d wwn %llx.\n",
4740 other_sess, other_sess->loop_id, other_wwn);
4741
4742 /* Same loop_id but different s_id
4743 * Ok to kill and logout */
4744 qlt_schedule_sess_for_deletion(other_sess);
4745 }
4746 }
4747
4748 return sess;
4749 }
4750
4751 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4752 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4753 {
4754 struct qla_tgt_sess_op *op;
4755 struct qla_tgt_cmd *cmd;
4756 uint32_t key;
4757 int count = 0;
4758 unsigned long flags;
4759
4760 key = (((u32)s_id->b.domain << 16) |
4761 ((u32)s_id->b.area << 8) |
4762 ((u32)s_id->b.al_pa));
4763
4764 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4765 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4766 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4767
4768 if (op_key == key) {
4769 op->aborted = true;
4770 count++;
4771 }
4772 }
4773
4774 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4775 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4776 if (op_key == key) {
4777 op->aborted = true;
4778 count++;
4779 }
4780 }
4781
4782 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4783 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4784 if (cmd_key == key) {
4785 cmd->aborted = 1;
4786 count++;
4787 }
4788 }
4789 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4790
4791 return count;
4792 }
4793
4794 static int qlt_handle_login(struct scsi_qla_host *vha,
4795 struct imm_ntfy_from_isp *iocb)
4796 {
4797 struct fc_port *sess = NULL, *conflict_sess = NULL;
4798 uint64_t wwn;
4799 port_id_t port_id;
4800 uint16_t loop_id, wd3_lo;
4801 int res = 0;
4802 struct qlt_plogi_ack_t *pla;
4803 unsigned long flags;
4804
4805 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4806
4807 port_id.b.domain = iocb->u.isp24.port_id[2];
4808 port_id.b.area = iocb->u.isp24.port_id[1];
4809 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4810 port_id.b.rsvd_1 = 0;
4811
4812 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4813
4814 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4815 abort_cmds_for_s_id(vha, &port_id);
4816
4817 if (wwn) {
4818 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4819 sess = qlt_find_sess_invalidate_other(vha, wwn,
4820 port_id, loop_id, &conflict_sess);
4821 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4822 } else {
4823 ql_dbg(ql_dbg_disc, vha, 0xffff,
4824 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ",
4825 __func__, __LINE__, loop_id, port_id.b24);
4826 qlt_send_term_imm_notif(vha, iocb, 1);
4827 goto out;
4828 }
4829
4830 if (IS_SW_RESV_ADDR(port_id)) {
4831 res = 1;
4832 goto out;
4833 }
4834
4835 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4836 if (!pla) {
4837 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff,
4838 "%s %d %8phC Term INOT due to mem alloc fail",
4839 __func__, __LINE__,
4840 iocb->u.isp24.port_name);
4841 qlt_send_term_imm_notif(vha, iocb, 1);
4842 goto out;
4843 }
4844
4845 if (conflict_sess) {
4846 conflict_sess->login_gen++;
4847 qlt_plogi_ack_link(vha, pla, conflict_sess,
4848 QLT_PLOGI_LINK_CONFLICT);
4849 }
4850
4851 if (!sess) {
4852 pla->ref_count++;
4853 ql_dbg(ql_dbg_disc, vha, 0xffff,
4854 "%s %d %8phC post new sess\n",
4855 __func__, __LINE__, iocb->u.isp24.port_name);
4856 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4857 qla24xx_post_newsess_work(vha, &port_id,
4858 iocb->u.isp24.port_name,
4859 iocb->u.isp24.u.plogi.node_name,
4860 pla, FC4_TYPE_UNKNOWN);
4861 else
4862 qla24xx_post_newsess_work(vha, &port_id,
4863 iocb->u.isp24.port_name, NULL,
4864 pla, FC4_TYPE_UNKNOWN);
4865
4866 goto out;
4867 }
4868
4869 if (sess->disc_state == DSC_UPD_FCPORT) {
4870 u16 sec;
4871
4872 /*
4873 * Remote port registration is still going on from
4874 * previous login. Allow it to finish before we
4875 * accept the new login.
4876 */
4877 sess->next_disc_state = DSC_DELETE_PEND;
4878 sec = jiffies_to_msecs(jiffies -
4879 sess->jiffies_at_registration) / 1000;
4880 if (sess->sec_since_registration < sec && sec &&
4881 !(sec % 5)) {
4882 sess->sec_since_registration = sec;
4883 ql_dbg(ql_dbg_disc, vha, 0xffff,
4884 "%s %8phC - Slow Rport registration (%d Sec)\n",
4885 __func__, sess->port_name, sec);
4886 }
4887
4888 if (!conflict_sess)
4889 kmem_cache_free(qla_tgt_plogi_cachep, pla);
4890
4891 qlt_send_term_imm_notif(vha, iocb, 1);
4892 goto out;
4893 }
4894
4895 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4896 sess->d_id = port_id;
4897 sess->login_gen++;
4898
4899 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4900 sess->fw_login_state = DSC_LS_PRLI_PEND;
4901 sess->local = 0;
4902 sess->loop_id = loop_id;
4903 sess->d_id = port_id;
4904 sess->fw_login_state = DSC_LS_PRLI_PEND;
4905 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4906
4907 if (wd3_lo & BIT_7)
4908 sess->conf_compl_supported = 1;
4909
4910 if ((wd3_lo & BIT_4) == 0)
4911 sess->port_type = FCT_INITIATOR;
4912 else
4913 sess->port_type = FCT_TARGET;
4914
4915 } else
4916 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4917
4918
4919 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4920 "%s %d %8phC DS %d\n",
4921 __func__, __LINE__, sess->port_name, sess->disc_state);
4922
4923 switch (sess->disc_state) {
4924 case DSC_DELETED:
4925 qlt_plogi_ack_unref(vha, pla);
4926 break;
4927
4928 default:
4929 /*
4930 * Under normal circumstances we want to release nport handle
4931 * during LOGO process to avoid nport handle leaks inside FW.
4932 * The exception is when LOGO is done while another PLOGI with
4933 * the same nport handle is waiting as might be the case here.
4934 * Note: there is always a possibily of a race where session
4935 * deletion has already started for other reasons (e.g. ACL
4936 * removal) and now PLOGI arrives:
4937 * 1. if PLOGI arrived in FW after nport handle has been freed,
4938 * FW must have assigned this PLOGI a new/same handle and we
4939 * can proceed ACK'ing it as usual when session deletion
4940 * completes.
4941 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4942 * bit reached it, the handle has now been released. We'll
4943 * get an error when we ACK this PLOGI. Nothing will be sent
4944 * back to initiator. Initiator should eventually retry
4945 * PLOGI and situation will correct itself.
4946 */
4947 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4948 (sess->d_id.b24 == port_id.b24));
4949
4950 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4951 "%s %d %8phC post del sess\n",
4952 __func__, __LINE__, sess->port_name);
4953
4954
4955 qlt_schedule_sess_for_deletion(sess);
4956 break;
4957 }
4958 out:
4959 return res;
4960 }
4961
4962 /*
4963 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4964 */
4965 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4966 struct imm_ntfy_from_isp *iocb)
4967 {
4968 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4969 struct qla_hw_data *ha = vha->hw;
4970 struct fc_port *sess = NULL, *conflict_sess = NULL;
4971 uint64_t wwn;
4972 port_id_t port_id;
4973 uint16_t loop_id;
4974 uint16_t wd3_lo;
4975 int res = 0;
4976 unsigned long flags;
4977
4978 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4979
4980 port_id.b.domain = iocb->u.isp24.port_id[2];
4981 port_id.b.area = iocb->u.isp24.port_id[1];
4982 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4983 port_id.b.rsvd_1 = 0;
4984
4985 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4986
4987 ql_dbg(ql_dbg_disc, vha, 0xf026,
4988 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4989 vha->vp_idx, iocb->u.isp24.port_id[2],
4990 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4991 iocb->u.isp24.status_subcode, loop_id,
4992 iocb->u.isp24.port_name);
4993
4994 /* res = 1 means ack at the end of thread
4995 * res = 0 means ack async/later.
4996 */
4997 switch (iocb->u.isp24.status_subcode) {
4998 case ELS_PLOGI:
4999 res = qlt_handle_login(vha, iocb);
5000 break;
5001
5002 case ELS_PRLI:
5003 if (N2N_TOPO(ha)) {
5004 sess = qla2x00_find_fcport_by_wwpn(vha,
5005 iocb->u.isp24.port_name, 1);
5006
5007 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
5008 ql_dbg(ql_dbg_disc, vha, 0xffff,
5009 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
5010 __func__, __LINE__,
5011 iocb->u.isp24.port_name);
5012 qlt_send_term_imm_notif(vha, iocb, 1);
5013 break;
5014 }
5015
5016 res = qlt_handle_login(vha, iocb);
5017 break;
5018 }
5019
5020 if (IS_SW_RESV_ADDR(port_id)) {
5021 res = 1;
5022 break;
5023 }
5024
5025 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
5026
5027 if (wwn) {
5028 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
5029 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
5030 loop_id, &conflict_sess);
5031 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
5032 }
5033
5034 if (conflict_sess) {
5035 switch (conflict_sess->disc_state) {
5036 case DSC_DELETED:
5037 case DSC_DELETE_PEND:
5038 break;
5039 default:
5040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
5041 "PRLI with conflicting sess %p port %8phC\n",
5042 conflict_sess, conflict_sess->port_name);
5043 conflict_sess->fw_login_state =
5044 DSC_LS_PORT_UNAVAIL;
5045 qlt_send_term_imm_notif(vha, iocb, 1);
5046 res = 0;
5047 break;
5048 }
5049 }
5050
5051 if (sess != NULL) {
5052 bool delete = false;
5053 int sec;
5054 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
5055 switch (sess->fw_login_state) {
5056 case DSC_LS_PLOGI_PEND:
5057 case DSC_LS_PLOGI_COMP:
5058 case DSC_LS_PRLI_COMP:
5059 break;
5060 default:
5061 delete = true;
5062 break;
5063 }
5064
5065 switch (sess->disc_state) {
5066 case DSC_UPD_FCPORT:
5067 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
5068 flags);
5069
5070 sec = jiffies_to_msecs(jiffies -
5071 sess->jiffies_at_registration)/1000;
5072 if (sess->sec_since_registration < sec && sec &&
5073 !(sec % 5)) {
5074 sess->sec_since_registration = sec;
5075 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
5076 "%s %8phC : Slow Rport registration(%d Sec)\n",
5077 __func__, sess->port_name, sec);
5078 }
5079 qlt_send_term_imm_notif(vha, iocb, 1);
5080 return 0;
5081
5082 case DSC_LOGIN_PEND:
5083 case DSC_GPDB:
5084 case DSC_LOGIN_COMPLETE:
5085 case DSC_ADISC:
5086 delete = false;
5087 break;
5088 default:
5089 break;
5090 }
5091
5092 if (delete) {
5093 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
5094 flags);
5095 /*
5096 * Impatient initiator sent PRLI before last
5097 * PLOGI could finish. Will force him to re-try,
5098 * while last one finishes.
5099 */
5100 ql_log(ql_log_warn, sess->vha, 0xf095,
5101 "sess %p PRLI received, before plogi ack.\n",
5102 sess);
5103 qlt_send_term_imm_notif(vha, iocb, 1);
5104 res = 0;
5105 break;
5106 }
5107
5108 /*
5109 * This shouldn't happen under normal circumstances,
5110 * since we have deleted the old session during PLOGI
5111 */
5112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
5113 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
5114 sess->loop_id, sess, iocb->u.isp24.nport_handle);
5115
5116 sess->local = 0;
5117 sess->loop_id = loop_id;
5118 sess->d_id = port_id;
5119 sess->fw_login_state = DSC_LS_PRLI_PEND;
5120
5121 if (wd3_lo & BIT_7)
5122 sess->conf_compl_supported = 1;
5123
5124 if ((wd3_lo & BIT_4) == 0)
5125 sess->port_type = FCT_INITIATOR;
5126 else
5127 sess->port_type = FCT_TARGET;
5128
5129 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
5130 }
5131 res = 1; /* send notify ack */
5132
5133 /* Make session global (not used in fabric mode) */
5134 if (ha->current_topology != ISP_CFG_F) {
5135 if (sess) {
5136 ql_dbg(ql_dbg_disc, vha, 0x20fa,
5137 "%s %d %8phC post nack\n",
5138 __func__, __LINE__, sess->port_name);
5139 qla24xx_post_nack_work(vha, sess, iocb,
5140 SRB_NACK_PRLI);
5141 res = 0;
5142 } else {
5143 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
5144 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
5145 qla2xxx_wake_dpc(vha);
5146 }
5147 } else {
5148 if (sess) {
5149 ql_dbg(ql_dbg_disc, vha, 0x20fb,
5150 "%s %d %8phC post nack\n",
5151 __func__, __LINE__, sess->port_name);
5152 qla24xx_post_nack_work(vha, sess, iocb,
5153 SRB_NACK_PRLI);
5154 res = 0;
5155 }
5156 }
5157 break;
5158
5159 case ELS_TPRLO:
5160 if (le16_to_cpu(iocb->u.isp24.flags) &
5161 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
5162 loop_id = 0xFFFF;
5163 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
5164 res = 1;
5165 break;
5166 }
5167 /* fall through */
5168 case ELS_LOGO:
5169 case ELS_PRLO:
5170 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5171 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
5172 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5173
5174 if (sess) {
5175 sess->login_gen++;
5176 sess->fw_login_state = DSC_LS_LOGO_PEND;
5177 sess->logo_ack_needed = 1;
5178 memcpy(sess->iocb, iocb, IOCB_SIZE);
5179 }
5180
5181 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5182
5183 ql_dbg(ql_dbg_disc, vha, 0x20fc,
5184 "%s: logo %llx res %d sess %p ",
5185 __func__, wwn, res, sess);
5186 if (res == 0) {
5187 /*
5188 * cmd went upper layer, look for qlt_xmit_tm_rsp()
5189 * for LOGO_ACK & sess delete
5190 */
5191 BUG_ON(!sess);
5192 res = 0;
5193 } else {
5194 /* cmd did not go to upper layer. */
5195 if (sess) {
5196 qlt_schedule_sess_for_deletion(sess);
5197 res = 0;
5198 }
5199 /* else logo will be ack */
5200 }
5201 break;
5202 case ELS_PDISC:
5203 case ELS_ADISC:
5204 {
5205 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5206 if (tgt->link_reinit_iocb_pending) {
5207 qlt_send_notify_ack(ha->base_qpair,
5208 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5209 tgt->link_reinit_iocb_pending = 0;
5210 }
5211
5212 sess = qla2x00_find_fcport_by_wwpn(vha,
5213 iocb->u.isp24.port_name, 1);
5214 if (sess) {
5215 ql_dbg(ql_dbg_disc, vha, 0x20fd,
5216 "sess %p lid %d|%d DS %d LS %d\n",
5217 sess, sess->loop_id, loop_id,
5218 sess->disc_state, sess->fw_login_state);
5219 }
5220
5221 res = 1; /* send notify ack */
5222 break;
5223 }
5224
5225 case ELS_FLOGI: /* should never happen */
5226 default:
5227 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
5228 "qla_target(%d): Unsupported ELS command %x "
5229 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
5230 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5231 break;
5232 }
5233
5234 ql_dbg(ql_dbg_disc, vha, 0xf026,
5235 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5236 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5237
5238 return res;
5239 }
5240
5241 /*
5242 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5243 */
5244 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5245 struct imm_ntfy_from_isp *iocb)
5246 {
5247 struct qla_hw_data *ha = vha->hw;
5248 uint32_t add_flags = 0;
5249 int send_notify_ack = 1;
5250 uint16_t status;
5251
5252 status = le16_to_cpu(iocb->u.isp2x.status);
5253 switch (status) {
5254 case IMM_NTFY_LIP_RESET:
5255 {
5256 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5257 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5258 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5259 iocb->u.isp24.status_subcode);
5260
5261 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5262 send_notify_ack = 0;
5263 break;
5264 }
5265
5266 case IMM_NTFY_LIP_LINK_REINIT:
5267 {
5268 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5269 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5270 "qla_target(%d): LINK REINIT (loop %#x, "
5271 "subcode %x)\n", vha->vp_idx,
5272 le16_to_cpu(iocb->u.isp24.nport_handle),
5273 iocb->u.isp24.status_subcode);
5274 if (tgt->link_reinit_iocb_pending) {
5275 qlt_send_notify_ack(ha->base_qpair,
5276 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5277 }
5278 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5279 tgt->link_reinit_iocb_pending = 1;
5280 /*
5281 * QLogic requires to wait after LINK REINIT for possible
5282 * PDISC or ADISC ELS commands
5283 */
5284 send_notify_ack = 0;
5285 break;
5286 }
5287
5288 case IMM_NTFY_PORT_LOGOUT:
5289 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5290 "qla_target(%d): Port logout (loop "
5291 "%#x, subcode %x)\n", vha->vp_idx,
5292 le16_to_cpu(iocb->u.isp24.nport_handle),
5293 iocb->u.isp24.status_subcode);
5294
5295 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5296 send_notify_ack = 0;
5297 /* The sessions will be cleared in the callback, if needed */
5298 break;
5299
5300 case IMM_NTFY_GLBL_TPRLO:
5301 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5302 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5303 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5304 send_notify_ack = 0;
5305 /* The sessions will be cleared in the callback, if needed */
5306 break;
5307
5308 case IMM_NTFY_PORT_CONFIG:
5309 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5310 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5311 status);
5312 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5313 send_notify_ack = 0;
5314 /* The sessions will be cleared in the callback, if needed */
5315 break;
5316
5317 case IMM_NTFY_GLBL_LOGO:
5318 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5319 "qla_target(%d): Link failure detected\n",
5320 vha->vp_idx);
5321 /* I_T nexus loss */
5322 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5323 send_notify_ack = 0;
5324 break;
5325
5326 case IMM_NTFY_IOCB_OVERFLOW:
5327 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5328 "qla_target(%d): Cannot provide requested "
5329 "capability (IOCB overflowed the immediate notify "
5330 "resource count)\n", vha->vp_idx);
5331 break;
5332
5333 case IMM_NTFY_ABORT_TASK:
5334 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5335 "qla_target(%d): Abort Task (S %08x I %#x -> "
5336 "L %#x)\n", vha->vp_idx,
5337 le16_to_cpu(iocb->u.isp2x.seq_id),
5338 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5339 le16_to_cpu(iocb->u.isp2x.lun));
5340 if (qlt_abort_task(vha, iocb) == 0)
5341 send_notify_ack = 0;
5342 break;
5343
5344 case IMM_NTFY_RESOURCE:
5345 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5346 "qla_target(%d): Out of resources, host %ld\n",
5347 vha->vp_idx, vha->host_no);
5348 break;
5349
5350 case IMM_NTFY_MSG_RX:
5351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5352 "qla_target(%d): Immediate notify task %x\n",
5353 vha->vp_idx, iocb->u.isp2x.task_flags);
5354 break;
5355
5356 case IMM_NTFY_ELS:
5357 if (qlt_24xx_handle_els(vha, iocb) == 0)
5358 send_notify_ack = 0;
5359 break;
5360 default:
5361 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5362 "qla_target(%d): Received unknown immediate "
5363 "notify status %x\n", vha->vp_idx, status);
5364 break;
5365 }
5366
5367 if (send_notify_ack)
5368 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5369 0, 0);
5370 }
5371
5372 /*
5373 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5374 * This function sends busy to ISP 2xxx or 24xx.
5375 */
5376 static int __qlt_send_busy(struct qla_qpair *qpair,
5377 struct atio_from_isp *atio, uint16_t status)
5378 {
5379 struct scsi_qla_host *vha = qpair->vha;
5380 struct ctio7_to_24xx *ctio24;
5381 struct qla_hw_data *ha = vha->hw;
5382 request_t *pkt;
5383 struct fc_port *sess = NULL;
5384 unsigned long flags;
5385 u16 temp;
5386 port_id_t id;
5387
5388 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2];
5389 id.b.area = atio->u.isp24.fcp_hdr.s_id[1];
5390 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0];
5391 id.b.rsvd_1 = 0;
5392
5393 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5394 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1);
5395 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5396 if (!sess) {
5397 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
5398 return 0;
5399 }
5400 /* Sending marker isn't necessary, since we called from ISR */
5401
5402 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
5403 if (!pkt) {
5404 ql_dbg(ql_dbg_io, vha, 0x3063,
5405 "qla_target(%d): %s failed: unable to allocate "
5406 "request packet", vha->vp_idx, __func__);
5407 return -ENOMEM;
5408 }
5409
5410 qpair->tgt_counters.num_q_full_sent++;
5411 pkt->entry_count = 1;
5412 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5413
5414 ctio24 = (struct ctio7_to_24xx *)pkt;
5415 ctio24->entry_type = CTIO_TYPE7;
5416 ctio24->nport_handle = sess->loop_id;
5417 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5418 ctio24->vp_index = vha->vp_idx;
5419 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5420 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5421 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5422 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5423 temp = (atio->u.isp24.attr << 9) |
5424 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5425 CTIO7_FLAGS_DONT_RET_CTIO;
5426 ctio24->u.status1.flags = cpu_to_le16(temp);
5427 /*
5428 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5429 * if the explicit conformation is used.
5430 */
5431 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5432 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5433
5434 ctio24->u.status1.residual = get_datalen_for_atio(atio);
5435
5436 if (ctio24->u.status1.residual != 0)
5437 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
5438
5439 /* Memory Barrier */
5440 wmb();
5441 if (qpair->reqq_start_iocbs)
5442 qpair->reqq_start_iocbs(qpair);
5443 else
5444 qla2x00_start_iocbs(vha, qpair->req);
5445 return 0;
5446 }
5447
5448 /*
5449 * This routine is used to allocate a command for either a QFull condition
5450 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5451 * out previously.
5452 */
5453 static void
5454 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5455 struct atio_from_isp *atio, uint16_t status, int qfull)
5456 {
5457 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5458 struct qla_hw_data *ha = vha->hw;
5459 struct fc_port *sess;
5460 struct se_session *se_sess;
5461 struct qla_tgt_cmd *cmd;
5462 int tag, cpu;
5463 unsigned long flags;
5464
5465 if (unlikely(tgt->tgt_stop)) {
5466 ql_dbg(ql_dbg_io, vha, 0x300a,
5467 "New command while device %p is shutting down\n", tgt);
5468 return;
5469 }
5470
5471 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5472 vha->hw->tgt.num_qfull_cmds_dropped++;
5473 if (vha->hw->tgt.num_qfull_cmds_dropped >
5474 vha->qla_stats.stat_max_qfull_cmds_dropped)
5475 vha->qla_stats.stat_max_qfull_cmds_dropped =
5476 vha->hw->tgt.num_qfull_cmds_dropped;
5477
5478 ql_dbg(ql_dbg_io, vha, 0x3068,
5479 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5480 vha->vp_idx, __func__,
5481 vha->hw->tgt.num_qfull_cmds_dropped);
5482
5483 qlt_chk_exch_leak_thresh_hold(vha);
5484 return;
5485 }
5486
5487 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5488 (vha, atio->u.isp24.fcp_hdr.s_id);
5489 if (!sess)
5490 return;
5491
5492 se_sess = sess->se_sess;
5493
5494 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
5495 if (tag < 0)
5496 return;
5497
5498 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5499 if (!cmd) {
5500 ql_dbg(ql_dbg_io, vha, 0x3009,
5501 "qla_target(%d): %s: Allocation of cmd failed\n",
5502 vha->vp_idx, __func__);
5503
5504 vha->hw->tgt.num_qfull_cmds_dropped++;
5505 if (vha->hw->tgt.num_qfull_cmds_dropped >
5506 vha->qla_stats.stat_max_qfull_cmds_dropped)
5507 vha->qla_stats.stat_max_qfull_cmds_dropped =
5508 vha->hw->tgt.num_qfull_cmds_dropped;
5509
5510 qlt_chk_exch_leak_thresh_hold(vha);
5511 return;
5512 }
5513
5514 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5515
5516 qlt_incr_num_pend_cmds(vha);
5517 INIT_LIST_HEAD(&cmd->cmd_list);
5518 memcpy(&cmd->atio, atio, sizeof(*atio));
5519
5520 cmd->tgt = vha->vha_tgt.qla_tgt;
5521 cmd->vha = vha;
5522 cmd->reset_count = ha->base_qpair->chip_reset;
5523 cmd->q_full = 1;
5524 cmd->qpair = ha->base_qpair;
5525 cmd->se_cmd.map_cpu = cpu;
5526
5527 if (qfull) {
5528 cmd->q_full = 1;
5529 /* NOTE: borrowing the state field to carry the status */
5530 cmd->state = status;
5531 } else
5532 cmd->term_exchg = 1;
5533
5534 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5535 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5536
5537 vha->hw->tgt.num_qfull_cmds_alloc++;
5538 if (vha->hw->tgt.num_qfull_cmds_alloc >
5539 vha->qla_stats.stat_max_qfull_cmds_alloc)
5540 vha->qla_stats.stat_max_qfull_cmds_alloc =
5541 vha->hw->tgt.num_qfull_cmds_alloc;
5542 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5543 }
5544
5545 int
5546 qlt_free_qfull_cmds(struct qla_qpair *qpair)
5547 {
5548 struct scsi_qla_host *vha = qpair->vha;
5549 struct qla_hw_data *ha = vha->hw;
5550 unsigned long flags;
5551 struct qla_tgt_cmd *cmd, *tcmd;
5552 struct list_head free_list, q_full_list;
5553 int rc = 0;
5554
5555 if (list_empty(&ha->tgt.q_full_list))
5556 return 0;
5557
5558 INIT_LIST_HEAD(&free_list);
5559 INIT_LIST_HEAD(&q_full_list);
5560
5561 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5562 if (list_empty(&ha->tgt.q_full_list)) {
5563 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5564 return 0;
5565 }
5566
5567 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5568 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5569
5570 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5571 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
5572 if (cmd->q_full)
5573 /* cmd->state is a borrowed field to hold status */
5574 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
5575 else if (cmd->term_exchg)
5576 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
5577
5578 if (rc == -ENOMEM)
5579 break;
5580
5581 if (cmd->q_full)
5582 ql_dbg(ql_dbg_io, vha, 0x3006,
5583 "%s: busy sent for ox_id[%04x]\n", __func__,
5584 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5585 else if (cmd->term_exchg)
5586 ql_dbg(ql_dbg_io, vha, 0x3007,
5587 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5588 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5589 else
5590 ql_dbg(ql_dbg_io, vha, 0x3008,
5591 "%s: Unexpected cmd in QFull list %p\n", __func__,
5592 cmd);
5593
5594 list_del(&cmd->cmd_list);
5595 list_add_tail(&cmd->cmd_list, &free_list);
5596
5597 /* piggy back on hardware_lock for protection */
5598 vha->hw->tgt.num_qfull_cmds_alloc--;
5599 }
5600 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
5601
5602 cmd = NULL;
5603
5604 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5605 list_del(&cmd->cmd_list);
5606 /* This cmd was never sent to TCM. There is no need
5607 * to schedule free or call free_cmd
5608 */
5609 qlt_free_cmd(cmd);
5610 }
5611
5612 if (!list_empty(&q_full_list)) {
5613 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5614 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5615 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5616 }
5617
5618 return rc;
5619 }
5620
5621 static void
5622 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5623 uint16_t status)
5624 {
5625 int rc = 0;
5626 struct scsi_qla_host *vha = qpair->vha;
5627
5628 rc = __qlt_send_busy(qpair, atio, status);
5629 if (rc == -ENOMEM)
5630 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5631 }
5632
5633 static int
5634 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5635 struct atio_from_isp *atio, uint8_t ha_locked)
5636 {
5637 struct qla_hw_data *ha = vha->hw;
5638 unsigned long flags;
5639
5640 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5641 return 0;
5642
5643 if (!ha_locked)
5644 spin_lock_irqsave(&ha->hardware_lock, flags);
5645 qlt_send_busy(qpair, atio, qla_sam_status);
5646 if (!ha_locked)
5647 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5648
5649 return 1;
5650 }
5651
5652 /* ha->hardware_lock supposed to be held on entry */
5653 /* called via callback from qla2xxx */
5654 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5655 struct atio_from_isp *atio, uint8_t ha_locked)
5656 {
5657 struct qla_hw_data *ha = vha->hw;
5658 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5659 int rc;
5660 unsigned long flags = 0;
5661
5662 if (unlikely(tgt == NULL)) {
5663 ql_dbg(ql_dbg_tgt, vha, 0x3064,
5664 "ATIO pkt, but no tgt (ha %p)", ha);
5665 return;
5666 }
5667 /*
5668 * In tgt_stop mode we also should allow all requests to pass.
5669 * Otherwise, some commands can stuck.
5670 */
5671
5672 tgt->atio_irq_cmd_count++;
5673
5674 switch (atio->u.raw.entry_type) {
5675 case ATIO_TYPE7:
5676 if (unlikely(atio->u.isp24.exchange_addr ==
5677 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
5678 ql_dbg(ql_dbg_io, vha, 0x3065,
5679 "qla_target(%d): ATIO_TYPE7 "
5680 "received with UNKNOWN exchange address, "
5681 "sending QUEUE_FULL\n", vha->vp_idx);
5682 if (!ha_locked)
5683 spin_lock_irqsave(&ha->hardware_lock, flags);
5684 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
5685 if (!ha_locked)
5686 spin_unlock_irqrestore(&ha->hardware_lock,
5687 flags);
5688 break;
5689 }
5690
5691 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5692 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5693 atio, ha_locked);
5694 if (rc != 0) {
5695 tgt->atio_irq_cmd_count--;
5696 return;
5697 }
5698 rc = qlt_handle_cmd_for_atio(vha, atio);
5699 } else {
5700 rc = qlt_handle_task_mgmt(vha, atio);
5701 }
5702 if (unlikely(rc != 0)) {
5703 if (!ha_locked)
5704 spin_lock_irqsave(&ha->hardware_lock, flags);
5705 switch (rc) {
5706 case -ENODEV:
5707 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5708 "qla_target: Unable to send command to target\n");
5709 break;
5710 case -EBADF:
5711 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5712 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5713 qlt_send_term_exchange(ha->base_qpair, NULL,
5714 atio, 1, 0);
5715 break;
5716 case -EBUSY:
5717 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5718 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5719 vha->vp_idx);
5720 qlt_send_busy(ha->base_qpair, atio,
5721 tc_sam_status);
5722 break;
5723 default:
5724 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5725 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5726 vha->vp_idx);
5727 qlt_send_busy(ha->base_qpair, atio,
5728 qla_sam_status);
5729 break;
5730 }
5731 if (!ha_locked)
5732 spin_unlock_irqrestore(&ha->hardware_lock,
5733 flags);
5734 }
5735 break;
5736
5737 case IMMED_NOTIFY_TYPE:
5738 {
5739 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5740 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5741 "qla_target(%d): Received ATIO packet %x "
5742 "with error status %x\n", vha->vp_idx,
5743 atio->u.raw.entry_type,
5744 atio->u.isp2x.entry_status);
5745 break;
5746 }
5747 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5748
5749 if (!ha_locked)
5750 spin_lock_irqsave(&ha->hardware_lock, flags);
5751 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5752 if (!ha_locked)
5753 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5754 break;
5755 }
5756
5757 default:
5758 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5759 "qla_target(%d): Received unknown ATIO atio "
5760 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5761 break;
5762 }
5763
5764 tgt->atio_irq_cmd_count--;
5765 }
5766
5767 /*
5768 * qpair lock is assume to be held
5769 * rc = 0 : send terminate & abts respond
5770 * rc != 0: do not send term & abts respond
5771 */
5772 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha,
5773 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry)
5774 {
5775 struct qla_hw_data *ha = vha->hw;
5776 int rc = 0;
5777
5778 /*
5779 * Detect unresolved exchange. If the same ABTS is unable
5780 * to terminate an existing command and the same ABTS loops
5781 * between FW & Driver, then force FW dump. Under 1 jiff,
5782 * we should see multiple loops.
5783 */
5784 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort &&
5785 qpair->retry_term_jiff == jiffies) {
5786 /* found existing exchange */
5787 qpair->retry_term_cnt++;
5788 if (qpair->retry_term_cnt >= 5) {
5789 rc = EIO;
5790 qpair->retry_term_cnt = 0;
5791 ql_log(ql_log_warn, vha, 0xffff,
5792 "Unable to send ABTS Respond. Dumping firmware.\n");
5793 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer,
5794 vha, 0xffff, (uint8_t *)entry, sizeof(*entry));
5795
5796 if (qpair == ha->base_qpair)
5797 ha->isp_ops->fw_dump(vha, 1);
5798 else
5799 ha->isp_ops->fw_dump(vha, 0);
5800
5801 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5802 qla2xxx_wake_dpc(vha);
5803 }
5804 } else if (qpair->retry_term_jiff != jiffies) {
5805 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort;
5806 qpair->retry_term_cnt = 0;
5807 qpair->retry_term_jiff = jiffies;
5808 }
5809
5810 return rc;
5811 }
5812
5813
5814 static void qlt_handle_abts_completion(struct scsi_qla_host *vha,
5815 struct rsp_que *rsp, response_t *pkt)
5816 {
5817 struct abts_resp_from_24xx_fw *entry =
5818 (struct abts_resp_from_24xx_fw *)pkt;
5819 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK;
5820 struct qla_tgt_mgmt_cmd *mcmd;
5821 struct qla_hw_data *ha = vha->hw;
5822
5823 mcmd = (struct qla_tgt_mgmt_cmd *)qlt_ctio_to_cmd(vha, rsp,
5824 pkt->handle, pkt);
5825 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) {
5826 ql_dbg(ql_dbg_async, vha, 0xe064,
5827 "qla_target(%d): ABTS Comp without mcmd\n",
5828 vha->vp_idx);
5829 return;
5830 }
5831
5832 if (mcmd)
5833 vha = mcmd->vha;
5834 vha->vha_tgt.qla_tgt->abts_resp_expected--;
5835
5836 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5837 "ABTS_RESP_24XX: compl_status %x\n",
5838 entry->compl_status);
5839
5840 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) {
5841 if ((entry->error_subcode1 == 0x1E) &&
5842 (entry->error_subcode2 == 0)) {
5843 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) {
5844 ha->tgt.tgt_ops->free_mcmd(mcmd);
5845 return;
5846 }
5847 qlt_24xx_retry_term_exchange(vha, rsp->qpair,
5848 pkt, mcmd);
5849 } else {
5850 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5851 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)",
5852 vha->vp_idx, entry->compl_status,
5853 entry->error_subcode1,
5854 entry->error_subcode2);
5855 ha->tgt.tgt_ops->free_mcmd(mcmd);
5856 }
5857 } else {
5858 ha->tgt.tgt_ops->free_mcmd(mcmd);
5859 }
5860 }
5861
5862 /* ha->hardware_lock supposed to be held on entry */
5863 /* called via callback from qla2xxx */
5864 static void qlt_response_pkt(struct scsi_qla_host *vha,
5865 struct rsp_que *rsp, response_t *pkt)
5866 {
5867 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5868
5869 if (unlikely(tgt == NULL)) {
5870 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5871 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5872 vha->vp_idx, pkt->entry_type, vha->hw);
5873 return;
5874 }
5875
5876 /*
5877 * In tgt_stop mode we also should allow all requests to pass.
5878 * Otherwise, some commands can stuck.
5879 */
5880
5881 switch (pkt->entry_type) {
5882 case CTIO_CRC2:
5883 case CTIO_TYPE7:
5884 {
5885 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5886 qlt_do_ctio_completion(vha, rsp, entry->handle,
5887 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5888 entry);
5889 break;
5890 }
5891
5892 case ACCEPT_TGT_IO_TYPE:
5893 {
5894 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5895 int rc;
5896 if (atio->u.isp2x.status !=
5897 cpu_to_le16(ATIO_CDB_VALID)) {
5898 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5899 "qla_target(%d): ATIO with error "
5900 "status %x received\n", vha->vp_idx,
5901 le16_to_cpu(atio->u.isp2x.status));
5902 break;
5903 }
5904
5905 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
5906 if (rc != 0)
5907 return;
5908
5909 rc = qlt_handle_cmd_for_atio(vha, atio);
5910 if (unlikely(rc != 0)) {
5911 switch (rc) {
5912 case -ENODEV:
5913 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5914 "qla_target: Unable to send command to target\n");
5915 break;
5916 case -EBADF:
5917 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5918 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5919 qlt_send_term_exchange(rsp->qpair, NULL,
5920 atio, 1, 0);
5921 break;
5922 case -EBUSY:
5923 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5924 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5925 vha->vp_idx);
5926 qlt_send_busy(rsp->qpair, atio,
5927 tc_sam_status);
5928 break;
5929 default:
5930 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5931 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5932 vha->vp_idx);
5933 qlt_send_busy(rsp->qpair, atio,
5934 qla_sam_status);
5935 break;
5936 }
5937 }
5938 }
5939 break;
5940
5941 case CONTINUE_TGT_IO_TYPE:
5942 {
5943 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5944 qlt_do_ctio_completion(vha, rsp, entry->handle,
5945 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5946 entry);
5947 break;
5948 }
5949
5950 case CTIO_A64_TYPE:
5951 {
5952 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5953 qlt_do_ctio_completion(vha, rsp, entry->handle,
5954 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5955 entry);
5956 break;
5957 }
5958
5959 case IMMED_NOTIFY_TYPE:
5960 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5961 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5962 break;
5963
5964 case NOTIFY_ACK_TYPE:
5965 if (tgt->notify_ack_expected > 0) {
5966 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5967 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5968 "NOTIFY_ACK seq %08x status %x\n",
5969 le16_to_cpu(entry->u.isp2x.seq_id),
5970 le16_to_cpu(entry->u.isp2x.status));
5971 tgt->notify_ack_expected--;
5972 if (entry->u.isp2x.status !=
5973 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5974 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5975 "qla_target(%d): NOTIFY_ACK "
5976 "failed %x\n", vha->vp_idx,
5977 le16_to_cpu(entry->u.isp2x.status));
5978 }
5979 } else {
5980 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5981 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5982 vha->vp_idx);
5983 }
5984 break;
5985
5986 case ABTS_RECV_24XX:
5987 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5988 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5989 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5990 break;
5991
5992 case ABTS_RESP_24XX:
5993 if (tgt->abts_resp_expected > 0) {
5994 qlt_handle_abts_completion(vha, rsp, pkt);
5995 } else {
5996 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5997 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5998 "received\n", vha->vp_idx);
5999 }
6000 break;
6001
6002 default:
6003 ql_dbg(ql_dbg_tgt, vha, 0xe065,
6004 "qla_target(%d): Received unknown response pkt "
6005 "type %x\n", vha->vp_idx, pkt->entry_type);
6006 break;
6007 }
6008
6009 }
6010
6011 /*
6012 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
6013 */
6014 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
6015 uint16_t *mailbox)
6016 {
6017 struct qla_hw_data *ha = vha->hw;
6018 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6019 int login_code;
6020
6021 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
6022 return;
6023
6024 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
6025 IS_QLA2100(ha))
6026 return;
6027 /*
6028 * In tgt_stop mode we also should allow all requests to pass.
6029 * Otherwise, some commands can stuck.
6030 */
6031
6032
6033 switch (code) {
6034 case MBA_RESET: /* Reset */
6035 case MBA_SYSTEM_ERR: /* System Error */
6036 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
6037 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
6038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
6039 "qla_target(%d): System error async event %#x "
6040 "occurred", vha->vp_idx, code);
6041 break;
6042 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
6043 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6044 break;
6045
6046 case MBA_LOOP_UP:
6047 {
6048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6049 "qla_target(%d): Async LOOP_UP occurred "
6050 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
6051 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
6052 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
6053 if (tgt->link_reinit_iocb_pending) {
6054 qlt_send_notify_ack(ha->base_qpair,
6055 (void *)&tgt->link_reinit_iocb,
6056 0, 0, 0, 0, 0, 0);
6057 tgt->link_reinit_iocb_pending = 0;
6058 }
6059 break;
6060 }
6061
6062 case MBA_LIP_OCCURRED:
6063 case MBA_LOOP_DOWN:
6064 case MBA_LIP_RESET:
6065 case MBA_RSCN_UPDATE:
6066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6067 "qla_target(%d): Async event %#x occurred "
6068 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
6069 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
6070 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
6071 break;
6072
6073 case MBA_REJECTED_FCP_CMD:
6074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
6075 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
6076 vha->vp_idx,
6077 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
6078 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
6079
6080 if (le16_to_cpu(mailbox[3]) == 1) {
6081 /* exchange starvation. */
6082 vha->hw->exch_starvation++;
6083 if (vha->hw->exch_starvation > 5) {
6084 ql_log(ql_log_warn, vha, 0xd03a,
6085 "Exchange starvation-. Resetting RISC\n");
6086
6087 vha->hw->exch_starvation = 0;
6088 if (IS_P3P_TYPE(vha->hw))
6089 set_bit(FCOE_CTX_RESET_NEEDED,
6090 &vha->dpc_flags);
6091 else
6092 set_bit(ISP_ABORT_NEEDED,
6093 &vha->dpc_flags);
6094 qla2xxx_wake_dpc(vha);
6095 }
6096 }
6097 break;
6098
6099 case MBA_PORT_UPDATE:
6100 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
6101 "qla_target(%d): Port update async event %#x "
6102 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
6103 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
6104 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
6105 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
6106
6107 login_code = le16_to_cpu(mailbox[2]);
6108 if (login_code == 0x4) {
6109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
6110 "Async MB 2: Got PLOGI Complete\n");
6111 vha->hw->exch_starvation = 0;
6112 } else if (login_code == 0x7)
6113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
6114 "Async MB 2: Port Logged Out\n");
6115 break;
6116 default:
6117 break;
6118 }
6119
6120 }
6121
6122 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
6123 uint16_t loop_id)
6124 {
6125 fc_port_t *fcport, *tfcp, *del;
6126 int rc;
6127 unsigned long flags;
6128 u8 newfcport = 0;
6129
6130 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
6131 if (!fcport) {
6132 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
6133 "qla_target(%d): Allocation of tmp FC port failed",
6134 vha->vp_idx);
6135 return NULL;
6136 }
6137
6138 fcport->loop_id = loop_id;
6139
6140 rc = qla24xx_gpdb_wait(vha, fcport, 0);
6141 if (rc != QLA_SUCCESS) {
6142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
6143 "qla_target(%d): Failed to retrieve fcport "
6144 "information -- get_port_database() returned %x "
6145 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
6146 kfree(fcport);
6147 return NULL;
6148 }
6149
6150 del = NULL;
6151 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
6152 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
6153
6154 if (tfcp) {
6155 tfcp->d_id = fcport->d_id;
6156 tfcp->port_type = fcport->port_type;
6157 tfcp->supported_classes = fcport->supported_classes;
6158 tfcp->flags |= fcport->flags;
6159 tfcp->scan_state = QLA_FCPORT_FOUND;
6160
6161 del = fcport;
6162 fcport = tfcp;
6163 } else {
6164 if (vha->hw->current_topology == ISP_CFG_F)
6165 fcport->flags |= FCF_FABRIC_DEVICE;
6166
6167 list_add_tail(&fcport->list, &vha->vp_fcports);
6168 if (!IS_SW_RESV_ADDR(fcport->d_id))
6169 vha->fcport_count++;
6170 fcport->login_gen++;
6171 fcport->disc_state = DSC_LOGIN_COMPLETE;
6172 fcport->login_succ = 1;
6173 newfcport = 1;
6174 }
6175
6176 fcport->deleted = 0;
6177 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
6178
6179 switch (vha->host->active_mode) {
6180 case MODE_INITIATOR:
6181 case MODE_DUAL:
6182 if (newfcport) {
6183 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
6184 qla24xx_sched_upd_fcport(fcport);
6185 } else {
6186 ql_dbg(ql_dbg_disc, vha, 0x20ff,
6187 "%s %d %8phC post gpsc fcp_cnt %d\n",
6188 __func__, __LINE__, fcport->port_name, vha->fcport_count);
6189 qla24xx_post_gpsc_work(vha, fcport);
6190 }
6191 }
6192 break;
6193
6194 case MODE_TARGET:
6195 default:
6196 break;
6197 }
6198 if (del)
6199 qla2x00_free_fcport(del);
6200
6201 return fcport;
6202 }
6203
6204 /* Must be called under tgt_mutex */
6205 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
6206 uint8_t *s_id)
6207 {
6208 struct fc_port *sess = NULL;
6209 fc_port_t *fcport = NULL;
6210 int rc, global_resets;
6211 uint16_t loop_id = 0;
6212
6213 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
6214 /*
6215 * This is Domain Controller, so it should be
6216 * OK to drop SCSI commands from it.
6217 */
6218 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
6219 "Unable to find initiator with S_ID %x:%x:%x",
6220 s_id[0], s_id[1], s_id[2]);
6221 return NULL;
6222 }
6223
6224 mutex_lock(&vha->vha_tgt.tgt_mutex);
6225
6226 retry:
6227 global_resets =
6228 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
6229
6230 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
6231 if (rc != 0) {
6232 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6233
6234 ql_log(ql_log_info, vha, 0xf071,
6235 "qla_target(%d): Unable to find "
6236 "initiator with S_ID %x:%x:%x",
6237 vha->vp_idx, s_id[0], s_id[1],
6238 s_id[2]);
6239
6240 if (rc == -ENOENT) {
6241 qlt_port_logo_t logo;
6242 sid_to_portid(s_id, &logo.id);
6243 logo.cmd_count = 1;
6244 qlt_send_first_logo(vha, &logo);
6245 }
6246
6247 return NULL;
6248 }
6249
6250 fcport = qlt_get_port_database(vha, loop_id);
6251 if (!fcport) {
6252 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6253 return NULL;
6254 }
6255
6256 if (global_resets !=
6257 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
6258 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
6259 "qla_target(%d): global reset during session discovery "
6260 "(counter was %d, new %d), retrying", vha->vp_idx,
6261 global_resets,
6262 atomic_read(&vha->vha_tgt.
6263 qla_tgt->tgt_global_resets_count));
6264 goto retry;
6265 }
6266
6267 sess = qlt_create_sess(vha, fcport, true);
6268
6269 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6270
6271 return sess;
6272 }
6273
6274 static void qlt_abort_work(struct qla_tgt *tgt,
6275 struct qla_tgt_sess_work_param *prm)
6276 {
6277 struct scsi_qla_host *vha = tgt->vha;
6278 struct qla_hw_data *ha = vha->hw;
6279 struct fc_port *sess = NULL;
6280 unsigned long flags = 0, flags2 = 0;
6281 uint32_t be_s_id;
6282 uint8_t s_id[3];
6283 int rc;
6284
6285 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6286
6287 if (tgt->tgt_stop)
6288 goto out_term2;
6289
6290 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
6291 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
6292 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
6293
6294 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
6295 (unsigned char *)&be_s_id);
6296 if (!sess) {
6297 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6298
6299 sess = qlt_make_local_sess(vha, s_id);
6300 /* sess has got an extra creation ref */
6301
6302 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6303 if (!sess)
6304 goto out_term2;
6305 } else {
6306 if (sess->deleted) {
6307 sess = NULL;
6308 goto out_term2;
6309 }
6310
6311 if (!kref_get_unless_zero(&sess->sess_kref)) {
6312 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
6313 "%s: kref_get fail %8phC \n",
6314 __func__, sess->port_name);
6315 sess = NULL;
6316 goto out_term2;
6317 }
6318 }
6319
6320 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
6321 ha->tgt.tgt_ops->put_sess(sess);
6322 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6323
6324 if (rc != 0)
6325 goto out_term;
6326 return;
6327
6328 out_term2:
6329 if (sess)
6330 ha->tgt.tgt_ops->put_sess(sess);
6331 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6332
6333 out_term:
6334 spin_lock_irqsave(&ha->hardware_lock, flags);
6335 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6336 FCP_TMF_REJECTED, false);
6337 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6338 }
6339
6340 static void qlt_tmr_work(struct qla_tgt *tgt,
6341 struct qla_tgt_sess_work_param *prm)
6342 {
6343 struct atio_from_isp *a = &prm->tm_iocb2;
6344 struct scsi_qla_host *vha = tgt->vha;
6345 struct qla_hw_data *ha = vha->hw;
6346 struct fc_port *sess = NULL;
6347 unsigned long flags;
6348 uint8_t *s_id = NULL; /* to hide compiler warnings */
6349 int rc;
6350 u64 unpacked_lun;
6351 int fn;
6352 void *iocb;
6353
6354 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6355
6356 if (tgt->tgt_stop)
6357 goto out_term2;
6358
6359 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6360 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6361 if (!sess) {
6362 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6363
6364 sess = qlt_make_local_sess(vha, s_id);
6365 /* sess has got an extra creation ref */
6366
6367 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6368 if (!sess)
6369 goto out_term2;
6370 } else {
6371 if (sess->deleted) {
6372 sess = NULL;
6373 goto out_term2;
6374 }
6375
6376 if (!kref_get_unless_zero(&sess->sess_kref)) {
6377 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
6378 "%s: kref_get fail %8phC\n",
6379 __func__, sess->port_name);
6380 sess = NULL;
6381 goto out_term2;
6382 }
6383 }
6384
6385 iocb = a;
6386 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
6387 unpacked_lun =
6388 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
6389
6390 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
6391 ha->tgt.tgt_ops->put_sess(sess);
6392 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6393
6394 if (rc != 0)
6395 goto out_term;
6396 return;
6397
6398 out_term2:
6399 if (sess)
6400 ha->tgt.tgt_ops->put_sess(sess);
6401 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6402 out_term:
6403 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
6404 }
6405
6406 static void qlt_sess_work_fn(struct work_struct *work)
6407 {
6408 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6409 struct scsi_qla_host *vha = tgt->vha;
6410 unsigned long flags;
6411
6412 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6413
6414 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6415 while (!list_empty(&tgt->sess_works_list)) {
6416 struct qla_tgt_sess_work_param *prm = list_entry(
6417 tgt->sess_works_list.next, typeof(*prm),
6418 sess_works_list_entry);
6419
6420 /*
6421 * This work can be scheduled on several CPUs at time, so we
6422 * must delete the entry to eliminate double processing
6423 */
6424 list_del(&prm->sess_works_list_entry);
6425
6426 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6427
6428 switch (prm->type) {
6429 case QLA_TGT_SESS_WORK_ABORT:
6430 qlt_abort_work(tgt, prm);
6431 break;
6432 case QLA_TGT_SESS_WORK_TM:
6433 qlt_tmr_work(tgt, prm);
6434 break;
6435 default:
6436 BUG_ON(1);
6437 break;
6438 }
6439
6440 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6441
6442 kfree(prm);
6443 }
6444 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6445 }
6446
6447 /* Must be called under tgt_host_action_mutex */
6448 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6449 {
6450 struct qla_tgt *tgt;
6451 int rc, i;
6452 struct qla_qpair_hint *h;
6453
6454 if (!QLA_TGT_MODE_ENABLED())
6455 return 0;
6456
6457 if (!IS_TGT_MODE_CAPABLE(ha)) {
6458 ql_log(ql_log_warn, base_vha, 0xe070,
6459 "This adapter does not support target mode.\n");
6460 return 0;
6461 }
6462
6463 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
6464 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
6465
6466 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
6467
6468 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6469 if (!tgt) {
6470 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6471 "Unable to allocate struct qla_tgt\n");
6472 return -ENOMEM;
6473 }
6474
6475 tgt->qphints = kcalloc(ha->max_qpairs + 1,
6476 sizeof(struct qla_qpair_hint),
6477 GFP_KERNEL);
6478 if (!tgt->qphints) {
6479 kfree(tgt);
6480 ql_log(ql_log_warn, base_vha, 0x0197,
6481 "Unable to allocate qpair hints.\n");
6482 return -ENOMEM;
6483 }
6484
6485 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6486 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6487
6488 rc = btree_init64(&tgt->lun_qpair_map);
6489 if (rc) {
6490 kfree(tgt->qphints);
6491 kfree(tgt);
6492 ql_log(ql_log_info, base_vha, 0x0198,
6493 "Unable to initialize lun_qpair_map btree\n");
6494 return -EIO;
6495 }
6496 h = &tgt->qphints[0];
6497 h->qpair = ha->base_qpair;
6498 INIT_LIST_HEAD(&h->hint_elem);
6499 h->cpuid = ha->base_qpair->cpuid;
6500 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6501
6502 for (i = 0; i < ha->max_qpairs; i++) {
6503 unsigned long flags;
6504
6505 struct qla_qpair *qpair = ha->queue_pair_map[i];
6506 h = &tgt->qphints[i + 1];
6507 INIT_LIST_HEAD(&h->hint_elem);
6508 if (qpair) {
6509 h->qpair = qpair;
6510 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6511 list_add_tail(&h->hint_elem, &qpair->hints_list);
6512 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6513 h->cpuid = qpair->cpuid;
6514 }
6515 }
6516
6517 tgt->ha = ha;
6518 tgt->vha = base_vha;
6519 init_waitqueue_head(&tgt->waitQ);
6520 INIT_LIST_HEAD(&tgt->del_sess_list);
6521 spin_lock_init(&tgt->sess_work_lock);
6522 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6523 INIT_LIST_HEAD(&tgt->sess_works_list);
6524 atomic_set(&tgt->tgt_global_resets_count, 0);
6525
6526 base_vha->vha_tgt.qla_tgt = tgt;
6527
6528 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6529 "qla_target(%d): using 64 Bit PCI addressing",
6530 base_vha->vp_idx);
6531 /* 3 is reserved */
6532 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6533
6534 mutex_lock(&qla_tgt_mutex);
6535 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6536 mutex_unlock(&qla_tgt_mutex);
6537
6538 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6539 ha->tgt.tgt_ops->add_target(base_vha);
6540
6541 return 0;
6542 }
6543
6544 /* Must be called under tgt_host_action_mutex */
6545 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6546 {
6547 if (!vha->vha_tgt.qla_tgt)
6548 return 0;
6549
6550 if (vha->fc_vport) {
6551 qlt_release(vha->vha_tgt.qla_tgt);
6552 return 0;
6553 }
6554
6555 /* free left over qfull cmds */
6556 qlt_init_term_exchange(vha);
6557
6558 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6559 vha->host_no, ha);
6560 qlt_release(vha->vha_tgt.qla_tgt);
6561
6562 return 0;
6563 }
6564
6565 void qlt_remove_target_resources(struct qla_hw_data *ha)
6566 {
6567 struct scsi_qla_host *node;
6568 u32 key = 0;
6569
6570 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6571 btree_remove32(&ha->tgt.host_map, key);
6572
6573 btree_destroy32(&ha->tgt.host_map);
6574 }
6575
6576 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6577 unsigned char *b)
6578 {
6579 int i;
6580
6581 pr_debug("qla2xxx HW vha->node_name: ");
6582 for (i = 0; i < WWN_SIZE; i++)
6583 pr_debug("%02x ", vha->node_name[i]);
6584 pr_debug("\n");
6585 pr_debug("qla2xxx HW vha->port_name: ");
6586 for (i = 0; i < WWN_SIZE; i++)
6587 pr_debug("%02x ", vha->port_name[i]);
6588 pr_debug("\n");
6589
6590 pr_debug("qla2xxx passed configfs WWPN: ");
6591 put_unaligned_be64(wwpn, b);
6592 for (i = 0; i < WWN_SIZE; i++)
6593 pr_debug("%02x ", b[i]);
6594 pr_debug("\n");
6595 }
6596
6597 /**
6598 * qla_tgt_lport_register - register lport with external module
6599 *
6600 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6601 * @phys_wwpn:
6602 * @npiv_wwpn:
6603 * @npiv_wwnn:
6604 * @callback: lport initialization callback for tcm_qla2xxx code
6605 */
6606 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6607 u64 npiv_wwpn, u64 npiv_wwnn,
6608 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6609 {
6610 struct qla_tgt *tgt;
6611 struct scsi_qla_host *vha;
6612 struct qla_hw_data *ha;
6613 struct Scsi_Host *host;
6614 unsigned long flags;
6615 int rc;
6616 u8 b[WWN_SIZE];
6617
6618 mutex_lock(&qla_tgt_mutex);
6619 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6620 vha = tgt->vha;
6621 ha = vha->hw;
6622
6623 host = vha->host;
6624 if (!host)
6625 continue;
6626
6627 if (!(host->hostt->supported_mode & MODE_TARGET))
6628 continue;
6629
6630 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6631 continue;
6632
6633 spin_lock_irqsave(&ha->hardware_lock, flags);
6634 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6635 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6636 host->host_no);
6637 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6638 continue;
6639 }
6640 if (tgt->tgt_stop) {
6641 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6642 host->host_no);
6643 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6644 continue;
6645 }
6646 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6647
6648 if (!scsi_host_get(host)) {
6649 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6650 "Unable to scsi_host_get() for"
6651 " qla2xxx scsi_host\n");
6652 continue;
6653 }
6654 qlt_lport_dump(vha, phys_wwpn, b);
6655
6656 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6657 scsi_host_put(host);
6658 continue;
6659 }
6660 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6661 if (rc != 0)
6662 scsi_host_put(host);
6663
6664 mutex_unlock(&qla_tgt_mutex);
6665 return rc;
6666 }
6667 mutex_unlock(&qla_tgt_mutex);
6668
6669 return -ENODEV;
6670 }
6671 EXPORT_SYMBOL(qlt_lport_register);
6672
6673 /**
6674 * qla_tgt_lport_deregister - Degister lport
6675 *
6676 * @vha: Registered scsi_qla_host pointer
6677 */
6678 void qlt_lport_deregister(struct scsi_qla_host *vha)
6679 {
6680 struct qla_hw_data *ha = vha->hw;
6681 struct Scsi_Host *sh = vha->host;
6682 /*
6683 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6684 */
6685 vha->vha_tgt.target_lport_ptr = NULL;
6686 ha->tgt.tgt_ops = NULL;
6687 /*
6688 * Release the Scsi_Host reference for the underlying qla2xxx host
6689 */
6690 scsi_host_put(sh);
6691 }
6692 EXPORT_SYMBOL(qlt_lport_deregister);
6693
6694 /* Must be called under HW lock */
6695 void qlt_set_mode(struct scsi_qla_host *vha)
6696 {
6697 switch (vha->qlini_mode) {
6698 case QLA2XXX_INI_MODE_DISABLED:
6699 case QLA2XXX_INI_MODE_EXCLUSIVE:
6700 vha->host->active_mode = MODE_TARGET;
6701 break;
6702 case QLA2XXX_INI_MODE_ENABLED:
6703 vha->host->active_mode = MODE_INITIATOR;
6704 break;
6705 case QLA2XXX_INI_MODE_DUAL:
6706 vha->host->active_mode = MODE_DUAL;
6707 break;
6708 default:
6709 break;
6710 }
6711 }
6712
6713 /* Must be called under HW lock */
6714 static void qlt_clear_mode(struct scsi_qla_host *vha)
6715 {
6716 switch (vha->qlini_mode) {
6717 case QLA2XXX_INI_MODE_DISABLED:
6718 vha->host->active_mode = MODE_UNKNOWN;
6719 break;
6720 case QLA2XXX_INI_MODE_EXCLUSIVE:
6721 vha->host->active_mode = MODE_INITIATOR;
6722 break;
6723 case QLA2XXX_INI_MODE_ENABLED:
6724 case QLA2XXX_INI_MODE_DUAL:
6725 vha->host->active_mode = MODE_INITIATOR;
6726 break;
6727 default:
6728 break;
6729 }
6730 }
6731
6732 /*
6733 * qla_tgt_enable_vha - NO LOCK HELD
6734 *
6735 * host_reset, bring up w/ Target Mode Enabled
6736 */
6737 void
6738 qlt_enable_vha(struct scsi_qla_host *vha)
6739 {
6740 struct qla_hw_data *ha = vha->hw;
6741 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6742 unsigned long flags;
6743 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6744
6745 if (!tgt) {
6746 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6747 "Unable to locate qla_tgt pointer from"
6748 " struct qla_hw_data\n");
6749 dump_stack();
6750 return;
6751 }
6752 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6753 return;
6754
6755 spin_lock_irqsave(&ha->hardware_lock, flags);
6756 tgt->tgt_stopped = 0;
6757 qlt_set_mode(vha);
6758 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6759
6760 mutex_lock(&ha->optrom_mutex);
6761 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
6762 "%s.\n", __func__);
6763 if (vha->vp_idx) {
6764 qla24xx_disable_vp(vha);
6765 qla24xx_enable_vp(vha);
6766 } else {
6767 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6768 qla2xxx_wake_dpc(base_vha);
6769 qla2x00_wait_for_hba_online(base_vha);
6770 }
6771 mutex_unlock(&ha->optrom_mutex);
6772 }
6773 EXPORT_SYMBOL(qlt_enable_vha);
6774
6775 /*
6776 * qla_tgt_disable_vha - NO LOCK HELD
6777 *
6778 * Disable Target Mode and reset the adapter
6779 */
6780 static void qlt_disable_vha(struct scsi_qla_host *vha)
6781 {
6782 struct qla_hw_data *ha = vha->hw;
6783 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6784 unsigned long flags;
6785
6786 if (!tgt) {
6787 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6788 "Unable to locate qla_tgt pointer from"
6789 " struct qla_hw_data\n");
6790 dump_stack();
6791 return;
6792 }
6793
6794 spin_lock_irqsave(&ha->hardware_lock, flags);
6795 qlt_clear_mode(vha);
6796 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6797
6798 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6799 qla2xxx_wake_dpc(vha);
6800 qla2x00_wait_for_hba_online(vha);
6801 }
6802
6803 /*
6804 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6805 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6806 * members.
6807 */
6808 void
6809 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6810 {
6811 vha->vha_tgt.qla_tgt = NULL;
6812
6813 mutex_init(&vha->vha_tgt.tgt_mutex);
6814 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6815
6816 qlt_clear_mode(vha);
6817
6818 /*
6819 * NOTE: Currently the value is kept the same for <24xx and
6820 * >=24xx ISPs. If it is necessary to change it,
6821 * the check should be added for specific ISPs,
6822 * assigning the value appropriately.
6823 */
6824 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6825
6826 qlt_add_target(ha, vha);
6827 }
6828
6829 u8
6830 qlt_rff_id(struct scsi_qla_host *vha)
6831 {
6832 u8 fc4_feature = 0;
6833 /*
6834 * FC-4 Feature bit 0 indicates target functionality to the name server.
6835 */
6836 if (qla_tgt_mode_enabled(vha)) {
6837 fc4_feature = BIT_0;
6838 } else if (qla_ini_mode_enabled(vha)) {
6839 fc4_feature = BIT_1;
6840 } else if (qla_dual_mode_enabled(vha))
6841 fc4_feature = BIT_0 | BIT_1;
6842
6843 return fc4_feature;
6844 }
6845
6846 /*
6847 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6848 * @ha: HA context
6849 *
6850 * Beginning of ATIO ring has initialization control block already built
6851 * by nvram config routine.
6852 *
6853 * Returns 0 on success.
6854 */
6855 void
6856 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6857 {
6858 struct qla_hw_data *ha = vha->hw;
6859 uint16_t cnt;
6860 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6861
6862 if (qla_ini_mode_enabled(vha))
6863 return;
6864
6865 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6866 pkt->u.raw.signature = ATIO_PROCESSED;
6867 pkt++;
6868 }
6869
6870 }
6871
6872 /*
6873 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6874 * @ha: SCSI driver HA context
6875 */
6876 void
6877 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6878 {
6879 struct qla_hw_data *ha = vha->hw;
6880 struct atio_from_isp *pkt;
6881 int cnt, i;
6882
6883 if (!ha->flags.fw_started)
6884 return;
6885
6886 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6887 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
6888 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6889 cnt = pkt->u.raw.entry_count;
6890
6891 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6892 /*
6893 * This packet is corrupted. The header + payload
6894 * can not be trusted. There is no point in passing
6895 * it further up.
6896 */
6897 ql_log(ql_log_warn, vha, 0xd03c,
6898 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6899 pkt->u.isp24.fcp_hdr.s_id,
6900 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6901 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6902
6903 adjust_corrupted_atio(pkt);
6904 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6905 ha_locked, 0);
6906 } else {
6907 qlt_24xx_atio_pkt_all_vps(vha,
6908 (struct atio_from_isp *)pkt, ha_locked);
6909 }
6910
6911 for (i = 0; i < cnt; i++) {
6912 ha->tgt.atio_ring_index++;
6913 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6914 ha->tgt.atio_ring_index = 0;
6915 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6916 } else
6917 ha->tgt.atio_ring_ptr++;
6918
6919 pkt->u.raw.signature = ATIO_PROCESSED;
6920 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6921 }
6922 wmb();
6923 }
6924
6925 /* Adjust ring index */
6926 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6927 }
6928
6929 void
6930 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6931 {
6932 struct qla_hw_data *ha = vha->hw;
6933 struct qla_msix_entry *msix = &ha->msix_entries[2];
6934 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6935
6936 if (!QLA_TGT_MODE_ENABLED())
6937 return;
6938
6939 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6940 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6941 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6942
6943 if (ha->flags.msix_enabled) {
6944 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6945 if (IS_QLA2071(ha)) {
6946 /* 4 ports Baker: Enable Interrupt Handshake */
6947 icb->msix_atio = 0;
6948 icb->firmware_options_2 |= BIT_26;
6949 } else {
6950 icb->msix_atio = cpu_to_le16(msix->entry);
6951 icb->firmware_options_2 &= ~BIT_26;
6952 }
6953 ql_dbg(ql_dbg_init, vha, 0xf072,
6954 "Registering ICB vector 0x%x for atio que.\n",
6955 msix->entry);
6956 }
6957 } else {
6958 /* INTx|MSI */
6959 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6960 icb->msix_atio = 0;
6961 icb->firmware_options_2 |= BIT_26;
6962 ql_dbg(ql_dbg_init, vha, 0xf072,
6963 "%s: Use INTx for ATIOQ.\n", __func__);
6964 }
6965 }
6966 }
6967
6968 void
6969 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6970 {
6971 struct qla_hw_data *ha = vha->hw;
6972 u32 tmp;
6973
6974 if (!QLA_TGT_MODE_ENABLED())
6975 return;
6976
6977 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6978 if (!ha->tgt.saved_set) {
6979 /* We save only once */
6980 ha->tgt.saved_exchange_count = nv->exchange_count;
6981 ha->tgt.saved_firmware_options_1 =
6982 nv->firmware_options_1;
6983 ha->tgt.saved_firmware_options_2 =
6984 nv->firmware_options_2;
6985 ha->tgt.saved_firmware_options_3 =
6986 nv->firmware_options_3;
6987 ha->tgt.saved_set = 1;
6988 }
6989
6990 if (qla_tgt_mode_enabled(vha))
6991 nv->exchange_count = cpu_to_le16(0xFFFF);
6992 else /* dual */
6993 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
6994
6995 /* Enable target mode */
6996 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6997
6998 /* Disable ini mode, if requested */
6999 if (qla_tgt_mode_enabled(vha))
7000 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
7001
7002 /* Disable Full Login after LIP */
7003 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
7004 /* Enable initial LIP */
7005 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
7006 if (ql2xtgt_tape_enable)
7007 /* Enable FC Tape support */
7008 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
7009 else
7010 /* Disable FC Tape support */
7011 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
7012
7013 /* Disable Full Login after LIP */
7014 nv->host_p &= cpu_to_le32(~BIT_10);
7015
7016 /*
7017 * clear BIT 15 explicitly as we have seen at least
7018 * a couple of instances where this was set and this
7019 * was causing the firmware to not be initialized.
7020 */
7021 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
7022 /* Enable target PRLI control */
7023 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
7024
7025 if (IS_QLA25XX(ha)) {
7026 /* Change Loop-prefer to Pt-Pt */
7027 tmp = ~(BIT_4|BIT_5|BIT_6);
7028 nv->firmware_options_2 &= cpu_to_le32(tmp);
7029 tmp = P2P << 4;
7030 nv->firmware_options_2 |= cpu_to_le32(tmp);
7031 }
7032 } else {
7033 if (ha->tgt.saved_set) {
7034 nv->exchange_count = ha->tgt.saved_exchange_count;
7035 nv->firmware_options_1 =
7036 ha->tgt.saved_firmware_options_1;
7037 nv->firmware_options_2 =
7038 ha->tgt.saved_firmware_options_2;
7039 nv->firmware_options_3 =
7040 ha->tgt.saved_firmware_options_3;
7041 }
7042 return;
7043 }
7044
7045 if (ha->base_qpair->enable_class_2) {
7046 if (vha->flags.init_done)
7047 fc_host_supported_classes(vha->host) =
7048 FC_COS_CLASS2 | FC_COS_CLASS3;
7049
7050 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
7051 } else {
7052 if (vha->flags.init_done)
7053 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
7054
7055 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
7056 }
7057 }
7058
7059 void
7060 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
7061 struct init_cb_24xx *icb)
7062 {
7063 struct qla_hw_data *ha = vha->hw;
7064
7065 if (!QLA_TGT_MODE_ENABLED())
7066 return;
7067
7068 if (ha->tgt.node_name_set) {
7069 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
7070 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
7071 }
7072 }
7073
7074 void
7075 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
7076 {
7077 struct qla_hw_data *ha = vha->hw;
7078 u32 tmp;
7079
7080 if (!QLA_TGT_MODE_ENABLED())
7081 return;
7082
7083 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
7084 if (!ha->tgt.saved_set) {
7085 /* We save only once */
7086 ha->tgt.saved_exchange_count = nv->exchange_count;
7087 ha->tgt.saved_firmware_options_1 =
7088 nv->firmware_options_1;
7089 ha->tgt.saved_firmware_options_2 =
7090 nv->firmware_options_2;
7091 ha->tgt.saved_firmware_options_3 =
7092 nv->firmware_options_3;
7093 ha->tgt.saved_set = 1;
7094 }
7095
7096 if (qla_tgt_mode_enabled(vha))
7097 nv->exchange_count = cpu_to_le16(0xFFFF);
7098 else /* dual */
7099 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
7100
7101 /* Enable target mode */
7102 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
7103
7104 /* Disable ini mode, if requested */
7105 if (qla_tgt_mode_enabled(vha))
7106 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
7107 /* Disable Full Login after LIP */
7108 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
7109 /* Enable initial LIP */
7110 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
7111 /*
7112 * clear BIT 15 explicitly as we have seen at
7113 * least a couple of instances where this was set
7114 * and this was causing the firmware to not be
7115 * initialized.
7116 */
7117 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
7118 if (ql2xtgt_tape_enable)
7119 /* Enable FC tape support */
7120 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
7121 else
7122 /* Disable FC tape support */
7123 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
7124
7125 /* Disable Full Login after LIP */
7126 nv->host_p &= cpu_to_le32(~BIT_10);
7127 /* Enable target PRLI control */
7128 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
7129
7130 /* Change Loop-prefer to Pt-Pt */
7131 tmp = ~(BIT_4|BIT_5|BIT_6);
7132 nv->firmware_options_2 &= cpu_to_le32(tmp);
7133 tmp = P2P << 4;
7134 nv->firmware_options_2 |= cpu_to_le32(tmp);
7135 } else {
7136 if (ha->tgt.saved_set) {
7137 nv->exchange_count = ha->tgt.saved_exchange_count;
7138 nv->firmware_options_1 =
7139 ha->tgt.saved_firmware_options_1;
7140 nv->firmware_options_2 =
7141 ha->tgt.saved_firmware_options_2;
7142 nv->firmware_options_3 =
7143 ha->tgt.saved_firmware_options_3;
7144 }
7145 return;
7146 }
7147
7148 if (ha->base_qpair->enable_class_2) {
7149 if (vha->flags.init_done)
7150 fc_host_supported_classes(vha->host) =
7151 FC_COS_CLASS2 | FC_COS_CLASS3;
7152
7153 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
7154 } else {
7155 if (vha->flags.init_done)
7156 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
7157
7158 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
7159 }
7160 }
7161
7162 void
7163 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
7164 struct init_cb_81xx *icb)
7165 {
7166 struct qla_hw_data *ha = vha->hw;
7167
7168 if (!QLA_TGT_MODE_ENABLED())
7169 return;
7170
7171 if (ha->tgt.node_name_set) {
7172 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
7173 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
7174 }
7175 }
7176
7177 void
7178 qlt_83xx_iospace_config(struct qla_hw_data *ha)
7179 {
7180 if (!QLA_TGT_MODE_ENABLED())
7181 return;
7182
7183 ha->msix_count += 1; /* For ATIO Q */
7184 }
7185
7186
7187 void
7188 qlt_modify_vp_config(struct scsi_qla_host *vha,
7189 struct vp_config_entry_24xx *vpmod)
7190 {
7191 /* enable target mode. Bit5 = 1 => disable */
7192 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
7193 vpmod->options_idx1 &= ~BIT_5;
7194
7195 /* Disable ini mode, if requested. bit4 = 1 => disable */
7196 if (qla_tgt_mode_enabled(vha))
7197 vpmod->options_idx1 &= ~BIT_4;
7198 }
7199
7200 void
7201 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
7202 {
7203 int rc;
7204
7205 if (!QLA_TGT_MODE_ENABLED())
7206 return;
7207
7208 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
7209 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
7210 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
7211 } else {
7212 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
7213 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
7214 }
7215
7216 mutex_init(&base_vha->vha_tgt.tgt_mutex);
7217 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
7218
7219 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
7220 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
7221 qlt_unknown_atio_work_fn);
7222
7223 qlt_clear_mode(base_vha);
7224
7225 rc = btree_init32(&ha->tgt.host_map);
7226 if (rc)
7227 ql_log(ql_log_info, base_vha, 0xd03d,
7228 "Unable to initialize ha->host_map btree\n");
7229
7230 qlt_update_vp_map(base_vha, SET_VP_IDX);
7231 }
7232
7233 irqreturn_t
7234 qla83xx_msix_atio_q(int irq, void *dev_id)
7235 {
7236 struct rsp_que *rsp;
7237 scsi_qla_host_t *vha;
7238 struct qla_hw_data *ha;
7239 unsigned long flags;
7240
7241 rsp = (struct rsp_que *) dev_id;
7242 ha = rsp->hw;
7243 vha = pci_get_drvdata(ha->pdev);
7244
7245 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7246
7247 qlt_24xx_process_atio_queue(vha, 0);
7248
7249 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7250
7251 return IRQ_HANDLED;
7252 }
7253
7254 static void
7255 qlt_handle_abts_recv_work(struct work_struct *work)
7256 {
7257 struct qla_tgt_sess_op *op = container_of(work,
7258 struct qla_tgt_sess_op, work);
7259 scsi_qla_host_t *vha = op->vha;
7260 struct qla_hw_data *ha = vha->hw;
7261 unsigned long flags;
7262
7263 if (qla2x00_reset_active(vha) ||
7264 (op->chip_reset != ha->base_qpair->chip_reset))
7265 return;
7266
7267 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7268 qlt_24xx_process_atio_queue(vha, 0);
7269 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7270
7271 spin_lock_irqsave(&ha->hardware_lock, flags);
7272 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
7273 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7274
7275 kfree(op);
7276 }
7277
7278 void
7279 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
7280 response_t *pkt)
7281 {
7282 struct qla_tgt_sess_op *op;
7283
7284 op = kzalloc(sizeof(*op), GFP_ATOMIC);
7285
7286 if (!op) {
7287 /* do not reach for ATIO queue here. This is best effort err
7288 * recovery at this point.
7289 */
7290 qlt_response_pkt_all_vps(vha, rsp, pkt);
7291 return;
7292 }
7293
7294 memcpy(&op->atio, pkt, sizeof(*pkt));
7295 op->vha = vha;
7296 op->chip_reset = vha->hw->base_qpair->chip_reset;
7297 op->rsp = rsp;
7298 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7299 queue_work(qla_tgt_wq, &op->work);
7300 return;
7301 }
7302
7303 int
7304 qlt_mem_alloc(struct qla_hw_data *ha)
7305 {
7306 if (!QLA_TGT_MODE_ENABLED())
7307 return 0;
7308
7309 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC,
7310 sizeof(struct qla_tgt_vp_map),
7311 GFP_KERNEL);
7312 if (!ha->tgt.tgt_vp_map)
7313 return -ENOMEM;
7314
7315 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7316 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7317 &ha->tgt.atio_dma, GFP_KERNEL);
7318 if (!ha->tgt.atio_ring) {
7319 kfree(ha->tgt.tgt_vp_map);
7320 return -ENOMEM;
7321 }
7322 return 0;
7323 }
7324
7325 void
7326 qlt_mem_free(struct qla_hw_data *ha)
7327 {
7328 if (!QLA_TGT_MODE_ENABLED())
7329 return;
7330
7331 if (ha->tgt.atio_ring) {
7332 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7333 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7334 ha->tgt.atio_dma);
7335 }
7336 kfree(ha->tgt.tgt_vp_map);
7337 }
7338
7339 /* vport_slock to be held by the caller */
7340 void
7341 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7342 {
7343 void *slot;
7344 u32 key;
7345 int rc;
7346
7347 if (!QLA_TGT_MODE_ENABLED())
7348 return;
7349
7350 key = vha->d_id.b24;
7351
7352 switch (cmd) {
7353 case SET_VP_IDX:
7354 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7355 break;
7356 case SET_AL_PA:
7357 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7358 if (!slot) {
7359 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
7360 "Save vha in host_map %p %06x\n", vha, key);
7361 rc = btree_insert32(&vha->hw->tgt.host_map,
7362 key, vha, GFP_ATOMIC);
7363 if (rc)
7364 ql_log(ql_log_info, vha, 0xd03e,
7365 "Unable to insert s_id into host_map: %06x\n",
7366 key);
7367 return;
7368 }
7369 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7370 "replace existing vha in host_map %p %06x\n", vha, key);
7371 btree_update32(&vha->hw->tgt.host_map, key, vha);
7372 break;
7373 case RESET_VP_IDX:
7374 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7375 break;
7376 case RESET_AL_PA:
7377 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
7378 "clear vha in host_map %p %06x\n", vha, key);
7379 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7380 if (slot)
7381 btree_remove32(&vha->hw->tgt.host_map, key);
7382 vha->d_id.b24 = 0;
7383 break;
7384 }
7385 }
7386
7387 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7388 {
7389
7390 if (!vha->d_id.b24) {
7391 vha->d_id = id;
7392 qlt_update_vp_map(vha, SET_AL_PA);
7393 } else if (vha->d_id.b24 != id.b24) {
7394 qlt_update_vp_map(vha, RESET_AL_PA);
7395 vha->d_id = id;
7396 qlt_update_vp_map(vha, SET_AL_PA);
7397 }
7398 }
7399
7400 static int __init qlt_parse_ini_mode(void)
7401 {
7402 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7403 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7404 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7405 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7406 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7407 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
7408 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7409 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
7410 else
7411 return false;
7412
7413 return true;
7414 }
7415
7416 int __init qlt_init(void)
7417 {
7418 int ret;
7419
7420 if (!qlt_parse_ini_mode()) {
7421 ql_log(ql_log_fatal, NULL, 0xe06b,
7422 "qlt_parse_ini_mode() failed\n");
7423 return -EINVAL;
7424 }
7425
7426 if (!QLA_TGT_MODE_ENABLED())
7427 return 0;
7428
7429 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7430 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7431 qla_tgt_mgmt_cmd), 0, NULL);
7432 if (!qla_tgt_mgmt_cmd_cachep) {
7433 ql_log(ql_log_fatal, NULL, 0xd04b,
7434 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
7435 return -ENOMEM;
7436 }
7437
7438 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
7439 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7440 0, NULL);
7441
7442 if (!qla_tgt_plogi_cachep) {
7443 ql_log(ql_log_fatal, NULL, 0xe06d,
7444 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7445 ret = -ENOMEM;
7446 goto out_mgmt_cmd_cachep;
7447 }
7448
7449 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7450 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7451 if (!qla_tgt_mgmt_cmd_mempool) {
7452 ql_log(ql_log_fatal, NULL, 0xe06e,
7453 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7454 ret = -ENOMEM;
7455 goto out_plogi_cachep;
7456 }
7457
7458 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7459 if (!qla_tgt_wq) {
7460 ql_log(ql_log_fatal, NULL, 0xe06f,
7461 "alloc_workqueue for qla_tgt_wq failed\n");
7462 ret = -ENOMEM;
7463 goto out_cmd_mempool;
7464 }
7465 /*
7466 * Return 1 to signal that initiator-mode is being disabled
7467 */
7468 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7469
7470 out_cmd_mempool:
7471 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7472 out_plogi_cachep:
7473 kmem_cache_destroy(qla_tgt_plogi_cachep);
7474 out_mgmt_cmd_cachep:
7475 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7476 return ret;
7477 }
7478
7479 void qlt_exit(void)
7480 {
7481 if (!QLA_TGT_MODE_ENABLED())
7482 return;
7483
7484 destroy_workqueue(qla_tgt_wq);
7485 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7486 kmem_cache_destroy(qla_tgt_plogi_cachep);
7487 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7488 }
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