]> git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blob - drivers/scsi/qla2xxx/qla_target.c
projects / mirror_ubuntu-hirsute-kernel.git / blob
? search:


b61f507af3ef941f73eb2770b9d850f606f51ab0
[mirror_ubuntu-hirsute-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 temp_sam_status = SAM_STAT_BUSY;
79
80 /*
81 * From scsi/fc/fc_fcp.h
82 */
83 enum fcp_resp_rsp_codes {
84 FCP_TMF_CMPL = 0,
85 FCP_DATA_LEN_INVALID = 1,
86 FCP_CMND_FIELDS_INVALID = 2,
87 FCP_DATA_PARAM_MISMATCH = 3,
88 FCP_TMF_REJECTED = 4,
89 FCP_TMF_FAILED = 5,
90 FCP_TMF_INVALID_LUN = 9,
91 };
92
93 /*
94 * fc_pri_ta from scsi/fc/fc_fcp.h
95 */
96 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
97 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
98 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
99 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
100 #define FCP_PTA_MASK 7 /* mask for task attribute field */
101 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
102 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
103
104 /*
105 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
106 * must be called under HW lock and could unlock/lock it inside.
107 * It isn't an issue, since in the current implementation on the time when
108 * those functions are called:
109 *
110 * - Either context is IRQ and only IRQ handler can modify HW data,
111 * including rings related fields,
112 *
113 * - Or access to target mode variables from struct qla_tgt doesn't
114 * cross those functions boundaries, except tgt_stop, which
115 * additionally protected by irq_cmd_count.
116 */
117 /* Predefs for callbacks handed to qla2xxx LLD */
118 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
119 struct atio_from_isp *pkt, uint8_t);
120 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
121 response_t *pkt);
122 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
123 int fn, void *iocb, int flags);
124 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
125 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
126 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
127 struct atio_from_isp *atio, uint16_t status, int qfull);
128 static void qlt_disable_vha(struct scsi_qla_host *vha);
129 static void qlt_clear_tgt_db(struct qla_tgt *tgt);
130 static void qlt_send_notify_ack(struct qla_qpair *qpair,
131 struct imm_ntfy_from_isp *ntfy,
132 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
133 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
134 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
135 struct imm_ntfy_from_isp *imm, int ha_locked);
136 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
137 fc_port_t *fcport, bool local);
138 void qlt_unreg_sess(struct fc_port *sess);
139 static void qlt_24xx_handle_abts(struct scsi_qla_host *,
140 struct abts_recv_from_24xx *);
141 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
142 uint16_t);
143
144 /*
145 * Global Variables
146 */
147 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
148 struct kmem_cache *qla_tgt_plogi_cachep;
149 static mempool_t *qla_tgt_mgmt_cmd_mempool;
150 static struct workqueue_struct *qla_tgt_wq;
151 static DEFINE_MUTEX(qla_tgt_mutex);
152 static LIST_HEAD(qla_tgt_glist);
153
154 static const char *prot_op_str(u32 prot_op)
155 {
156 switch (prot_op) {
157 case TARGET_PROT_NORMAL: return "NORMAL";
158 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
159 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
160 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
161 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
162 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
163 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
164 default: return "UNKNOWN";
165 }
166 }
167
168 /* This API intentionally takes dest as a parameter, rather than returning
169 * int value to avoid caller forgetting to issue wmb() after the store */
170 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
171 {
172 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
173 *dest = atomic_inc_return(&base_vha->generation_tick);
174 /* memory barrier */
175 wmb();
176 }
177
178 /* Might release hw lock, then reaquire!! */
179 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
180 {
181 /* Send marker if required */
182 if (unlikely(vha->marker_needed != 0)) {
183 int rc = qla2x00_issue_marker(vha, vha_locked);
184 if (rc != QLA_SUCCESS) {
185 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
186 "qla_target(%d): issue_marker() failed\n",
187 vha->vp_idx);
188 }
189 return rc;
190 }
191 return QLA_SUCCESS;
192 }
193
194 static inline
195 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
196 uint8_t *d_id)
197 {
198 struct scsi_qla_host *host;
199 uint32_t key = 0;
200
201 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
202 (vha->d_id.b.al_pa == d_id[2]))
203 return vha;
204
205 key = (uint32_t)d_id[0] << 16;
206 key |= (uint32_t)d_id[1] << 8;
207 key |= (uint32_t)d_id[2];
208
209 host = btree_lookup32(&vha->hw->tgt.host_map, key);
210 if (!host)
211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
212 "Unable to find host %06x\n", key);
213
214 return host;
215 }
216
217 static inline
218 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
219 uint16_t vp_idx)
220 {
221 struct qla_hw_data *ha = vha->hw;
222
223 if (vha->vp_idx == vp_idx)
224 return vha;
225
226 BUG_ON(ha->tgt.tgt_vp_map == NULL);
227 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
228 return ha->tgt.tgt_vp_map[vp_idx].vha;
229
230 return NULL;
231 }
232
233 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
234 {
235 unsigned long flags;
236
237 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
238
239 vha->hw->tgt.num_pend_cmds++;
240 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
241 vha->qla_stats.stat_max_pend_cmds =
242 vha->hw->tgt.num_pend_cmds;
243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
244 }
245 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
246 {
247 unsigned long flags;
248
249 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
250 vha->hw->tgt.num_pend_cmds--;
251 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
252 }
253
254
255 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
256 struct atio_from_isp *atio, uint8_t ha_locked)
257 {
258 struct qla_tgt_sess_op *u;
259 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
260 unsigned long flags;
261
262 if (tgt->tgt_stop) {
263 ql_dbg(ql_dbg_async, vha, 0x502c,
264 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
265 vha->vp_idx);
266 goto out_term;
267 }
268
269 u = kzalloc(sizeof(*u), GFP_ATOMIC);
270 if (u == NULL)
271 goto out_term;
272
273 u->vha = vha;
274 memcpy(&u->atio, atio, sizeof(*atio));
275 INIT_LIST_HEAD(&u->cmd_list);
276
277 spin_lock_irqsave(&vha->cmd_list_lock, flags);
278 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
279 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
280
281 schedule_delayed_work(&vha->unknown_atio_work, 1);
282
283 out:
284 return;
285
286 out_term:
287 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
288 goto out;
289 }
290
291 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
292 uint8_t ha_locked)
293 {
294 struct qla_tgt_sess_op *u, *t;
295 scsi_qla_host_t *host;
296 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
297 unsigned long flags;
298 uint8_t queued = 0;
299
300 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
301 if (u->aborted) {
302 ql_dbg(ql_dbg_async, vha, 0x502e,
303 "Freeing unknown %s %p, because of Abort\n",
304 "ATIO_TYPE7", u);
305 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
306 &u->atio, ha_locked, 0);
307 goto abort;
308 }
309
310 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
311 if (host != NULL) {
312 ql_dbg(ql_dbg_async, vha, 0x502f,
313 "Requeuing unknown ATIO_TYPE7 %p\n", u);
314 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
315 } else if (tgt->tgt_stop) {
316 ql_dbg(ql_dbg_async, vha, 0x503a,
317 "Freeing unknown %s %p, because tgt is being stopped\n",
318 "ATIO_TYPE7", u);
319 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
320 &u->atio, ha_locked, 0);
321 } else {
322 ql_dbg(ql_dbg_async, vha, 0x503d,
323 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
324 if (!queued) {
325 queued = 1;
326 schedule_delayed_work(&vha->unknown_atio_work,
327 1);
328 }
329 continue;
330 }
331
332 abort:
333 spin_lock_irqsave(&vha->cmd_list_lock, flags);
334 list_del(&u->cmd_list);
335 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
336 kfree(u);
337 }
338 }
339
340 void qlt_unknown_atio_work_fn(struct work_struct *work)
341 {
342 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
343 struct scsi_qla_host, unknown_atio_work);
344
345 qlt_try_to_dequeue_unknown_atios(vha, 0);
346 }
347
348 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
349 struct atio_from_isp *atio, uint8_t ha_locked)
350 {
351 ql_dbg(ql_dbg_tgt, vha, 0xe072,
352 "%s: qla_target(%d): type %x ox_id %04x\n",
353 __func__, vha->vp_idx, atio->u.raw.entry_type,
354 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
355
356 switch (atio->u.raw.entry_type) {
357 case ATIO_TYPE7:
358 {
359 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
360 atio->u.isp24.fcp_hdr.d_id);
361 if (unlikely(NULL == host)) {
362 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
363 "qla_target(%d): Received ATIO_TYPE7 "
364 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
365 atio->u.isp24.fcp_hdr.d_id[0],
366 atio->u.isp24.fcp_hdr.d_id[1],
367 atio->u.isp24.fcp_hdr.d_id[2]);
368
369
370 qlt_queue_unknown_atio(vha, atio, ha_locked);
371 break;
372 }
373 if (unlikely(!list_empty(&vha->unknown_atio_list)))
374 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
375
376 qlt_24xx_atio_pkt(host, atio, ha_locked);
377 break;
378 }
379
380 case IMMED_NOTIFY_TYPE:
381 {
382 struct scsi_qla_host *host = vha;
383 struct imm_ntfy_from_isp *entry =
384 (struct imm_ntfy_from_isp *)atio;
385
386 qlt_issue_marker(vha, ha_locked);
387
388 if ((entry->u.isp24.vp_index != 0xFF) &&
389 (entry->u.isp24.nport_handle != 0xFFFF)) {
390 host = qlt_find_host_by_vp_idx(vha,
391 entry->u.isp24.vp_index);
392 if (unlikely(!host)) {
393 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
394 "qla_target(%d): Received "
395 "ATIO (IMMED_NOTIFY_TYPE) "
396 "with unknown vp_index %d\n",
397 vha->vp_idx, entry->u.isp24.vp_index);
398 break;
399 }
400 }
401 qlt_24xx_atio_pkt(host, atio, ha_locked);
402 break;
403 }
404
405 case VP_RPT_ID_IOCB_TYPE:
406 qla24xx_report_id_acquisition(vha,
407 (struct vp_rpt_id_entry_24xx *)atio);
408 break;
409
410 case ABTS_RECV_24XX:
411 {
412 struct abts_recv_from_24xx *entry =
413 (struct abts_recv_from_24xx *)atio;
414 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
415 entry->vp_index);
416 unsigned long flags;
417
418 if (unlikely(!host)) {
419 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
420 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
421 "received, with unknown vp_index %d\n",
422 vha->vp_idx, entry->vp_index);
423 break;
424 }
425 if (!ha_locked)
426 spin_lock_irqsave(&host->hw->hardware_lock, flags);
427 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
428 if (!ha_locked)
429 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
430 break;
431 }
432
433 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
434
435 default:
436 ql_dbg(ql_dbg_tgt, vha, 0xe040,
437 "qla_target(%d): Received unknown ATIO atio "
438 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
439 break;
440 }
441
442 return false;
443 }
444
445 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
446 struct rsp_que *rsp, response_t *pkt)
447 {
448 switch (pkt->entry_type) {
449 case CTIO_CRC2:
450 ql_dbg(ql_dbg_tgt, vha, 0xe073,
451 "qla_target(%d):%s: CRC2 Response pkt\n",
452 vha->vp_idx, __func__);
453 case CTIO_TYPE7:
454 {
455 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
456 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
457 entry->vp_index);
458 if (unlikely(!host)) {
459 ql_dbg(ql_dbg_tgt, vha, 0xe041,
460 "qla_target(%d): Response pkt (CTIO_TYPE7) "
461 "received, with unknown vp_index %d\n",
462 vha->vp_idx, entry->vp_index);
463 break;
464 }
465 qlt_response_pkt(host, rsp, pkt);
466 break;
467 }
468
469 case IMMED_NOTIFY_TYPE:
470 {
471 struct scsi_qla_host *host = vha;
472 struct imm_ntfy_from_isp *entry =
473 (struct imm_ntfy_from_isp *)pkt;
474
475 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
476 if (unlikely(!host)) {
477 ql_dbg(ql_dbg_tgt, vha, 0xe042,
478 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
479 "received, with unknown vp_index %d\n",
480 vha->vp_idx, entry->u.isp24.vp_index);
481 break;
482 }
483 qlt_response_pkt(host, rsp, pkt);
484 break;
485 }
486
487 case NOTIFY_ACK_TYPE:
488 {
489 struct scsi_qla_host *host = vha;
490 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
491
492 if (0xFF != entry->u.isp24.vp_index) {
493 host = qlt_find_host_by_vp_idx(vha,
494 entry->u.isp24.vp_index);
495 if (unlikely(!host)) {
496 ql_dbg(ql_dbg_tgt, vha, 0xe043,
497 "qla_target(%d): Response "
498 "pkt (NOTIFY_ACK_TYPE) "
499 "received, with unknown "
500 "vp_index %d\n", vha->vp_idx,
501 entry->u.isp24.vp_index);
502 break;
503 }
504 }
505 qlt_response_pkt(host, rsp, pkt);
506 break;
507 }
508
509 case ABTS_RECV_24XX:
510 {
511 struct abts_recv_from_24xx *entry =
512 (struct abts_recv_from_24xx *)pkt;
513 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
514 entry->vp_index);
515 if (unlikely(!host)) {
516 ql_dbg(ql_dbg_tgt, vha, 0xe044,
517 "qla_target(%d): Response pkt "
518 "(ABTS_RECV_24XX) received, with unknown "
519 "vp_index %d\n", vha->vp_idx, entry->vp_index);
520 break;
521 }
522 qlt_response_pkt(host, rsp, pkt);
523 break;
524 }
525
526 case ABTS_RESP_24XX:
527 {
528 struct abts_resp_to_24xx *entry =
529 (struct abts_resp_to_24xx *)pkt;
530 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
531 entry->vp_index);
532 if (unlikely(!host)) {
533 ql_dbg(ql_dbg_tgt, vha, 0xe045,
534 "qla_target(%d): Response pkt "
535 "(ABTS_RECV_24XX) received, with unknown "
536 "vp_index %d\n", vha->vp_idx, entry->vp_index);
537 break;
538 }
539 qlt_response_pkt(host, rsp, pkt);
540 break;
541 }
542
543 default:
544 qlt_response_pkt(vha, rsp, pkt);
545 break;
546 }
547
548 }
549
550 /*
551 * All qlt_plogi_ack_t operations are protected by hardware_lock
552 */
553 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
554 struct imm_ntfy_from_isp *ntfy, int type)
555 {
556 struct qla_work_evt *e;
557 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
558 if (!e)
559 return QLA_FUNCTION_FAILED;
560
561 e->u.nack.fcport = fcport;
562 e->u.nack.type = type;
563 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
564 return qla2x00_post_work(vha, e);
565 }
566
567 static
568 void qla2x00_async_nack_sp_done(void *s, int res)
569 {
570 struct srb *sp = (struct srb *)s;
571 struct scsi_qla_host *vha = sp->vha;
572 unsigned long flags;
573
574 ql_dbg(ql_dbg_disc, vha, 0x20f2,
575 "Async done-%s res %x %8phC type %d\n",
576 sp->name, res, sp->fcport->port_name, sp->type);
577
578 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
579 sp->fcport->flags &= ~FCF_ASYNC_SENT;
580 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
581
582 switch (sp->type) {
583 case SRB_NACK_PLOGI:
584 sp->fcport->login_gen++;
585 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
586 sp->fcport->logout_on_delete = 1;
587 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
588 sp->fcport->send_els_logo = 0;
589 break;
590
591 case SRB_NACK_PRLI:
592 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
593 sp->fcport->deleted = 0;
594 sp->fcport->send_els_logo = 0;
595
596 if (!sp->fcport->login_succ &&
597 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
598 sp->fcport->login_succ = 1;
599
600 vha->fcport_count++;
601
602 if (!IS_IIDMA_CAPABLE(vha->hw) ||
603 !vha->hw->flags.gpsc_supported) {
604 ql_dbg(ql_dbg_disc, vha, 0x20f3,
605 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
606 __func__, __LINE__,
607 sp->fcport->port_name,
608 vha->fcport_count);
609
610 qla24xx_post_upd_fcport_work(vha, sp->fcport);
611 } else {
612 ql_dbg(ql_dbg_disc, vha, 0x20f5,
613 "%s %d %8phC post gpsc fcp_cnt %d\n",
614 __func__, __LINE__,
615 sp->fcport->port_name,
616 vha->fcport_count);
617
618 qla24xx_post_gpsc_work(vha, sp->fcport);
619 }
620 }
621 break;
622
623 case SRB_NACK_LOGO:
624 sp->fcport->login_gen++;
625 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
626 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
627 break;
628 }
629 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
630
631 sp->free(sp);
632 }
633
634 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
635 struct imm_ntfy_from_isp *ntfy, int type)
636 {
637 int rval = QLA_FUNCTION_FAILED;
638 srb_t *sp;
639 char *c = NULL;
640
641 fcport->flags |= FCF_ASYNC_SENT;
642 switch (type) {
643 case SRB_NACK_PLOGI:
644 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
645 c = "PLOGI";
646 break;
647 case SRB_NACK_PRLI:
648 fcport->fw_login_state = DSC_LS_PRLI_PEND;
649 fcport->deleted = 0;
650 c = "PRLI";
651 break;
652 case SRB_NACK_LOGO:
653 fcport->fw_login_state = DSC_LS_LOGO_PEND;
654 c = "LOGO";
655 break;
656 }
657
658 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
659 if (!sp)
660 goto done;
661
662 sp->type = type;
663 sp->name = "nack";
664
665 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
666
667 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
668 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
669 sp->done = qla2x00_async_nack_sp_done;
670
671 rval = qla2x00_start_sp(sp);
672 if (rval != QLA_SUCCESS)
673 goto done_free_sp;
674
675 ql_dbg(ql_dbg_disc, vha, 0x20f4,
676 "Async-%s %8phC hndl %x %s\n",
677 sp->name, fcport->port_name, sp->handle, c);
678
679 return rval;
680
681 done_free_sp:
682 sp->free(sp);
683 done:
684 fcport->flags &= ~FCF_ASYNC_SENT;
685 return rval;
686 }
687
688 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
689 {
690 fc_port_t *t;
691 unsigned long flags;
692
693 switch (e->u.nack.type) {
694 case SRB_NACK_PRLI:
695 mutex_lock(&vha->vha_tgt.tgt_mutex);
696 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
697 mutex_unlock(&vha->vha_tgt.tgt_mutex);
698 if (t) {
699 ql_log(ql_log_info, vha, 0xd034,
700 "%s create sess success %p", __func__, t);
701 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
702 /* create sess has an extra kref */
703 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
704 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
705 }
706 break;
707 }
708 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
709 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
710 }
711
712 void qla24xx_delete_sess_fn(struct work_struct *work)
713 {
714 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
715 struct qla_hw_data *ha = fcport->vha->hw;
716 unsigned long flags;
717
718 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
719
720 if (fcport->se_sess) {
721 ha->tgt.tgt_ops->shutdown_sess(fcport);
722 ha->tgt.tgt_ops->put_sess(fcport);
723 } else {
724 qlt_unreg_sess(fcport);
725 }
726 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
727 }
728
729 /*
730 * Called from qla2x00_reg_remote_port()
731 */
732 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
733 {
734 struct qla_hw_data *ha = vha->hw;
735 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
736 struct fc_port *sess = fcport;
737 unsigned long flags;
738
739 if (!vha->hw->tgt.tgt_ops)
740 return;
741
742 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
743 if (tgt->tgt_stop) {
744 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
745 return;
746 }
747
748 if (fcport->disc_state == DSC_DELETE_PEND) {
749 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
750 return;
751 }
752
753 if (!sess->se_sess) {
754 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
755
756 mutex_lock(&vha->vha_tgt.tgt_mutex);
757 sess = qlt_create_sess(vha, fcport, false);
758 mutex_unlock(&vha->vha_tgt.tgt_mutex);
759
760 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
761 } else {
762 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
763 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
764 return;
765 }
766
767 if (!kref_get_unless_zero(&sess->sess_kref)) {
768 ql_dbg(ql_dbg_disc, vha, 0x2107,
769 "%s: kref_get fail sess %8phC \n",
770 __func__, sess->port_name);
771 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
772 return;
773 }
774
775 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
776 "qla_target(%u): %ssession for port %8phC "
777 "(loop ID %d) reappeared\n", vha->vp_idx,
778 sess->local ? "local " : "", sess->port_name, sess->loop_id);
779
780 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
781 "Reappeared sess %p\n", sess);
782
783 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
784 fcport->loop_id,
785 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
786 }
787
788 if (sess && sess->local) {
789 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
790 "qla_target(%u): local session for "
791 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
792 fcport->port_name, sess->loop_id);
793 sess->local = 0;
794 }
795 ha->tgt.tgt_ops->put_sess(sess);
796 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
797 }
798
799 /*
800 * This is a zero-base ref-counting solution, since hardware_lock
801 * guarantees that ref_count is not modified concurrently.
802 * Upon successful return content of iocb is undefined
803 */
804 static struct qlt_plogi_ack_t *
805 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
806 struct imm_ntfy_from_isp *iocb)
807 {
808 struct qlt_plogi_ack_t *pla;
809
810 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
811 if (pla->id.b24 == id->b24) {
812 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
813 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
814 return pla;
815 }
816 }
817
818 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
819 if (!pla) {
820 ql_dbg(ql_dbg_async, vha, 0x5088,
821 "qla_target(%d): Allocation of plogi_ack failed\n",
822 vha->vp_idx);
823 return NULL;
824 }
825
826 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
827 pla->id = *id;
828 list_add_tail(&pla->list, &vha->plogi_ack_list);
829
830 return pla;
831 }
832
833 void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
834 struct qlt_plogi_ack_t *pla)
835 {
836 struct imm_ntfy_from_isp *iocb = &pla->iocb;
837 port_id_t port_id;
838 uint16_t loop_id;
839 fc_port_t *fcport = pla->fcport;
840
841 BUG_ON(!pla->ref_count);
842 pla->ref_count--;
843
844 if (pla->ref_count)
845 return;
846
847 ql_dbg(ql_dbg_disc, vha, 0x5089,
848 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
849 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
850 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
851 iocb->u.isp24.port_id[0],
852 le16_to_cpu(iocb->u.isp24.nport_handle),
853 iocb->u.isp24.exchange_address, iocb->ox_id);
854
855 port_id.b.domain = iocb->u.isp24.port_id[2];
856 port_id.b.area = iocb->u.isp24.port_id[1];
857 port_id.b.al_pa = iocb->u.isp24.port_id[0];
858 port_id.b.rsvd_1 = 0;
859
860 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
861
862 fcport->loop_id = loop_id;
863 fcport->d_id = port_id;
864 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
865
866 list_for_each_entry(fcport, &vha->vp_fcports, list) {
867 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
868 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
869 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
870 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
871 }
872
873 list_del(&pla->list);
874 kmem_cache_free(qla_tgt_plogi_cachep, pla);
875 }
876
877 void
878 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
879 struct fc_port *sess, enum qlt_plogi_link_t link)
880 {
881 struct imm_ntfy_from_isp *iocb = &pla->iocb;
882 /* Inc ref_count first because link might already be pointing at pla */
883 pla->ref_count++;
884
885 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
886 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
887 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
888 sess, link, sess->port_name,
889 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
890 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
891 pla->ref_count, pla, link);
892
893 if (link == QLT_PLOGI_LINK_CONFLICT) {
894 switch (sess->disc_state) {
895 case DSC_DELETED:
896 case DSC_DELETE_PEND:
897 pla->ref_count--;
898 return;
899 default:
900 break;
901 }
902 }
903
904 if (sess->plogi_link[link])
905 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
906
907 if (link == QLT_PLOGI_LINK_SAME_WWN)
908 pla->fcport = sess;
909
910 sess->plogi_link[link] = pla;
911 }
912
913 typedef struct {
914 /* These fields must be initialized by the caller */
915 port_id_t id;
916 /*
917 * number of cmds dropped while we were waiting for
918 * initiator to ack LOGO initialize to 1 if LOGO is
919 * triggered by a command, otherwise, to 0
920 */
921 int cmd_count;
922
923 /* These fields are used by callee */
924 struct list_head list;
925 } qlt_port_logo_t;
926
927 static void
928 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
929 {
930 qlt_port_logo_t *tmp;
931 int res;
932
933 mutex_lock(&vha->vha_tgt.tgt_mutex);
934
935 list_for_each_entry(tmp, &vha->logo_list, list) {
936 if (tmp->id.b24 == logo->id.b24) {
937 tmp->cmd_count += logo->cmd_count;
938 mutex_unlock(&vha->vha_tgt.tgt_mutex);
939 return;
940 }
941 }
942
943 list_add_tail(&logo->list, &vha->logo_list);
944
945 mutex_unlock(&vha->vha_tgt.tgt_mutex);
946
947 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
948
949 mutex_lock(&vha->vha_tgt.tgt_mutex);
950 list_del(&logo->list);
951 mutex_unlock(&vha->vha_tgt.tgt_mutex);
952
953 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
954 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
955 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
956 logo->cmd_count, res);
957 }
958
959 static void qlt_free_session_done(struct work_struct *work)
960 {
961 struct fc_port *sess = container_of(work, struct fc_port,
962 free_work);
963 struct qla_tgt *tgt = sess->tgt;
964 struct scsi_qla_host *vha = sess->vha;
965 struct qla_hw_data *ha = vha->hw;
966 unsigned long flags;
967 bool logout_started = false;
968 struct event_arg ea;
969 scsi_qla_host_t *base_vha;
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 qlt_send_first_logo(vha, &logo);
986 }
987
988 if (sess->logout_on_delete) {
989 int rc;
990
991 rc = qla2x00_post_async_logout_work(vha, sess, NULL);
992 if (rc != QLA_SUCCESS)
993 ql_log(ql_log_warn, vha, 0xf085,
994 "Schedule logo failed sess %p rc %d\n",
995 sess, rc);
996 else
997 logout_started = true;
998 }
999 }
1000
1001 /*
1002 * Release the target session for FC Nexus from fabric module code.
1003 */
1004 if (sess->se_sess != NULL)
1005 ha->tgt.tgt_ops->free_session(sess);
1006
1007 if (logout_started) {
1008 bool traced = false;
1009
1010 while (!READ_ONCE(sess->logout_completed)) {
1011 if (!traced) {
1012 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1013 "%s: waiting for sess %p logout\n",
1014 __func__, sess);
1015 traced = true;
1016 }
1017 msleep(100);
1018 }
1019
1020 ql_dbg(ql_dbg_disc, vha, 0xf087,
1021 "%s: sess %p logout completed\n",__func__, sess);
1022 }
1023
1024 if (sess->logo_ack_needed) {
1025 sess->logo_ack_needed = 0;
1026 qla24xx_async_notify_ack(vha, sess,
1027 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
1028 }
1029
1030 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1031 if (sess->se_sess) {
1032 sess->se_sess = NULL;
1033 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1034 tgt->sess_count--;
1035 }
1036
1037 sess->disc_state = DSC_DELETED;
1038 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1039 sess->deleted = QLA_SESS_DELETED;
1040 sess->login_retry = vha->hw->login_retry_count;
1041
1042 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1043 vha->fcport_count--;
1044 sess->login_succ = 0;
1045 }
1046
1047 if (sess->chip_reset != ha->base_qpair->chip_reset)
1048 qla2x00_clear_loop_id(sess);
1049
1050 if (sess->conflict) {
1051 sess->conflict->login_pause = 0;
1052 sess->conflict = NULL;
1053 if (!test_bit(UNLOADING, &vha->dpc_flags))
1054 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1055 }
1056
1057 {
1058 struct qlt_plogi_ack_t *own =
1059 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
1060 struct qlt_plogi_ack_t *con =
1061 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
1062 struct imm_ntfy_from_isp *iocb;
1063
1064 if (con) {
1065 iocb = &con->iocb;
1066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
1067 "se_sess %p / sess %p port %8phC is gone,"
1068 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1069 sess->se_sess, sess, sess->port_name,
1070 own ? "releasing own PLOGI" : "no own PLOGI pending",
1071 own ? own->ref_count : -1,
1072 iocb->u.isp24.port_name, con->ref_count);
1073 qlt_plogi_ack_unref(vha, con);
1074 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
1075 } else {
1076 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1077 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1078 sess->se_sess, sess, sess->port_name,
1079 own ? "releasing own PLOGI" :
1080 "no own PLOGI pending",
1081 own ? own->ref_count : -1);
1082 }
1083
1084 if (own) {
1085 sess->fw_login_state = DSC_LS_PLOGI_PEND;
1086 qlt_plogi_ack_unref(vha, own);
1087 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1088 }
1089 }
1090 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1091
1092 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
1093 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1094 sess, sess->port_name, vha->fcport_count);
1095
1096 if (tgt && (tgt->sess_count == 0))
1097 wake_up_all(&tgt->waitQ);
1098
1099 if (vha->fcport_count == 0)
1100 wake_up_all(&vha->fcport_waitQ);
1101
1102 base_vha = pci_get_drvdata(ha->pdev);
1103 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1104 return;
1105
1106 if (!tgt || !tgt->tgt_stop) {
1107 memset(&ea, 0, sizeof(ea));
1108 ea.event = FCME_DELETE_DONE;
1109 ea.fcport = sess;
1110 qla2x00_fcport_event_handler(vha, &ea);
1111 }
1112 }
1113
1114 /* ha->tgt.sess_lock supposed to be held on entry */
1115 void qlt_unreg_sess(struct fc_port *sess)
1116 {
1117 struct scsi_qla_host *vha = sess->vha;
1118
1119 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
1120 "%s sess %p for deletion %8phC\n",
1121 __func__, sess, sess->port_name);
1122
1123 if (sess->se_sess)
1124 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
1125
1126 qla2x00_mark_device_lost(vha, sess, 1, 1);
1127
1128 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1129 sess->disc_state = DSC_DELETE_PEND;
1130 sess->last_rscn_gen = sess->rscn_gen;
1131 sess->last_login_gen = sess->login_gen;
1132
1133 if (sess->nvme_flag & NVME_FLAG_REGISTERED)
1134 schedule_work(&sess->nvme_del_work);
1135
1136 INIT_WORK(&sess->free_work, qlt_free_session_done);
1137 schedule_work(&sess->free_work);
1138 }
1139 EXPORT_SYMBOL(qlt_unreg_sess);
1140
1141 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1142 {
1143 struct qla_hw_data *ha = vha->hw;
1144 struct fc_port *sess = NULL;
1145 uint16_t loop_id;
1146 int res = 0;
1147 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
1148 unsigned long flags;
1149
1150 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1151 if (loop_id == 0xFFFF) {
1152 /* Global event */
1153 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
1154 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1155 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
1156 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1157 } else {
1158 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1159 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
1160 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1161 }
1162
1163 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1164 "Using sess for qla_tgt_reset: %p\n", sess);
1165 if (!sess) {
1166 res = -ESRCH;
1167 return res;
1168 }
1169
1170 ql_dbg(ql_dbg_tgt, vha, 0xe047,
1171 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1172 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
1173 mcmd, loop_id);
1174
1175 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
1176 }
1177
1178 static void qla24xx_chk_fcp_state(struct fc_port *sess)
1179 {
1180 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
1181 sess->logout_on_delete = 0;
1182 sess->logo_ack_needed = 0;
1183 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1184 sess->scan_state = 0;
1185 }
1186 }
1187
1188 /* ha->tgt.sess_lock supposed to be held on entry */
1189 void qlt_schedule_sess_for_deletion(struct fc_port *sess,
1190 bool immediate)
1191 {
1192 struct qla_tgt *tgt = sess->tgt;
1193
1194 if (sess->disc_state == DSC_DELETE_PEND)
1195 return;
1196
1197 if (sess->disc_state == DSC_DELETED) {
1198 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1199 wake_up_all(&tgt->waitQ);
1200 if (sess->vha->fcport_count == 0)
1201 wake_up_all(&sess->vha->fcport_waitQ);
1202
1203 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1204 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
1205 return;
1206 }
1207
1208 sess->disc_state = DSC_DELETE_PEND;
1209
1210 if (sess->deleted == QLA_SESS_DELETED)
1211 sess->logout_on_delete = 0;
1212
1213 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1214 qla24xx_chk_fcp_state(sess);
1215
1216 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1217 "Scheduling sess %p for deletion\n", sess);
1218
1219 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn);
1220 queue_work(sess->vha->hw->wq, &sess->del_work);
1221 }
1222
1223 void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess)
1224 {
1225 unsigned long flags;
1226 struct qla_hw_data *ha = sess->vha->hw;
1227 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1228 qlt_schedule_sess_for_deletion(sess, 1);
1229 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1230 }
1231
1232 /* ha->tgt.sess_lock supposed to be held on entry */
1233 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
1234 {
1235 struct fc_port *sess;
1236 scsi_qla_host_t *vha = tgt->vha;
1237
1238 list_for_each_entry(sess, &vha->vp_fcports, list) {
1239 if (sess->se_sess)
1240 qlt_schedule_sess_for_deletion(sess, 1);
1241 }
1242
1243 /* At this point tgt could be already dead */
1244 }
1245
1246 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1247 uint16_t *loop_id)
1248 {
1249 struct qla_hw_data *ha = vha->hw;
1250 dma_addr_t gid_list_dma;
1251 struct gid_list_info *gid_list;
1252 char *id_iter;
1253 int res, rc, i;
1254 uint16_t entries;
1255
1256 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1257 &gid_list_dma, GFP_KERNEL);
1258 if (!gid_list) {
1259 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1260 "qla_target(%d): DMA Alloc failed of %u\n",
1261 vha->vp_idx, qla2x00_gid_list_size(ha));
1262 return -ENOMEM;
1263 }
1264
1265 /* Get list of logged in devices */
1266 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
1267 if (rc != QLA_SUCCESS) {
1268 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1269 "qla_target(%d): get_id_list() failed: %x\n",
1270 vha->vp_idx, rc);
1271 res = -EBUSY;
1272 goto out_free_id_list;
1273 }
1274
1275 id_iter = (char *)gid_list;
1276 res = -ENOENT;
1277 for (i = 0; i < entries; i++) {
1278 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1279 if ((gid->al_pa == s_id[2]) &&
1280 (gid->area == s_id[1]) &&
1281 (gid->domain == s_id[0])) {
1282 *loop_id = le16_to_cpu(gid->loop_id);
1283 res = 0;
1284 break;
1285 }
1286 id_iter += ha->gid_list_info_size;
1287 }
1288
1289 out_free_id_list:
1290 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1291 gid_list, gid_list_dma);
1292 return res;
1293 }
1294
1295 /*
1296 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1297 * Caller must put it.
1298 */
1299 static struct fc_port *qlt_create_sess(
1300 struct scsi_qla_host *vha,
1301 fc_port_t *fcport,
1302 bool local)
1303 {
1304 struct qla_hw_data *ha = vha->hw;
1305 struct fc_port *sess = fcport;
1306 unsigned long flags;
1307
1308 if (vha->vha_tgt.qla_tgt->tgt_stop)
1309 return NULL;
1310
1311 if (fcport->se_sess) {
1312 if (!kref_get_unless_zero(&sess->sess_kref)) {
1313 ql_dbg(ql_dbg_disc, vha, 0x20f6,
1314 "%s: kref_get_unless_zero failed for %8phC\n",
1315 __func__, sess->port_name);
1316 return NULL;
1317 }
1318 return fcport;
1319 }
1320 sess->tgt = vha->vha_tgt.qla_tgt;
1321 sess->local = local;
1322
1323 /*
1324 * Under normal circumstances we want to logout from firmware when
1325 * session eventually ends and release corresponding nport handle.
1326 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
1327 * code will adjust these flags as necessary.
1328 */
1329 sess->logout_on_delete = 1;
1330 sess->keep_nport_handle = 0;
1331 sess->logout_completed = 0;
1332
1333 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1334 &fcport->port_name[0], sess) < 0) {
1335 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
1336 "(%d) %8phC check_initiator_node_acl failed\n",
1337 vha->vp_idx, fcport->port_name);
1338 return NULL;
1339 } else {
1340 kref_init(&fcport->sess_kref);
1341 /*
1342 * Take an extra reference to ->sess_kref here to handle
1343 * fc_port access across ->tgt.sess_lock reaquire.
1344 */
1345 if (!kref_get_unless_zero(&sess->sess_kref)) {
1346 ql_dbg(ql_dbg_disc, vha, 0x20f7,
1347 "%s: kref_get_unless_zero failed for %8phC\n",
1348 __func__, sess->port_name);
1349 return NULL;
1350 }
1351
1352 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1353 if (!IS_SW_RESV_ADDR(sess->d_id))
1354 vha->vha_tgt.qla_tgt->sess_count++;
1355
1356 qlt_do_generation_tick(vha, &sess->generation);
1357 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1358 }
1359
1360 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1361 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1362 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1363 vha->vha_tgt.qla_tgt->sess_count);
1364
1365 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
1366 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1367 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1368 vha->vp_idx, local ? "local " : "", fcport->port_name,
1369 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1370 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
1371
1372 return sess;
1373 }
1374
1375 /*
1376 * max_gen - specifies maximum session generation
1377 * at which this deletion requestion is still valid
1378 */
1379 void
1380 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
1381 {
1382 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
1383 struct fc_port *sess = fcport;
1384 unsigned long flags;
1385
1386 if (!vha->hw->tgt.tgt_ops)
1387 return;
1388
1389 if (!tgt)
1390 return;
1391
1392 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
1393 if (tgt->tgt_stop) {
1394 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1395 return;
1396 }
1397 if (!sess->se_sess) {
1398 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1399 return;
1400 }
1401
1402 if (max_gen - sess->generation < 0) {
1403 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1404 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1405 "Ignoring stale deletion request for se_sess %p / sess %p"
1406 " for port %8phC, req_gen %d, sess_gen %d\n",
1407 sess->se_sess, sess, sess->port_name, max_gen,
1408 sess->generation);
1409 return;
1410 }
1411
1412 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1413
1414 sess->local = 1;
1415 qlt_schedule_sess_for_deletion(sess, false);
1416 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1417 }
1418
1419 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1420 {
1421 struct qla_hw_data *ha = tgt->ha;
1422 unsigned long flags;
1423 int res;
1424 /*
1425 * We need to protect against race, when tgt is freed before or
1426 * inside wake_up()
1427 */
1428 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1429 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1430 "tgt %p, sess_count=%d\n",
1431 tgt, tgt->sess_count);
1432 res = (tgt->sess_count == 0);
1433 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1434
1435 return res;
1436 }
1437
1438 /* Called by tcm_qla2xxx configfs code */
1439 int qlt_stop_phase1(struct qla_tgt *tgt)
1440 {
1441 struct scsi_qla_host *vha = tgt->vha;
1442 struct qla_hw_data *ha = tgt->ha;
1443 unsigned long flags;
1444
1445 mutex_lock(&qla_tgt_mutex);
1446 if (!vha->fc_vport) {
1447 struct Scsi_Host *sh = vha->host;
1448 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1449 bool npiv_vports;
1450
1451 spin_lock_irqsave(sh->host_lock, flags);
1452 npiv_vports = (fc_host->npiv_vports_inuse);
1453 spin_unlock_irqrestore(sh->host_lock, flags);
1454
1455 if (npiv_vports) {
1456 mutex_unlock(&qla_tgt_mutex);
1457 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1458 "NPIV is in use. Can not stop target\n");
1459 return -EPERM;
1460 }
1461 }
1462 if (tgt->tgt_stop || tgt->tgt_stopped) {
1463 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1464 "Already in tgt->tgt_stop or tgt_stopped state\n");
1465 mutex_unlock(&qla_tgt_mutex);
1466 return -EPERM;
1467 }
1468
1469 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1470 vha->host_no, vha);
1471 /*
1472 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1473 * Lock is needed, because we still can get an incoming packet.
1474 */
1475 mutex_lock(&vha->vha_tgt.tgt_mutex);
1476 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1477 tgt->tgt_stop = 1;
1478 qlt_clear_tgt_db(tgt);
1479 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1480 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1481 mutex_unlock(&qla_tgt_mutex);
1482
1483 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1484 "Waiting for sess works (tgt %p)", tgt);
1485 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1486 while (!list_empty(&tgt->sess_works_list)) {
1487 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1488 flush_scheduled_work();
1489 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1490 }
1491 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1492
1493 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1494 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
1495
1496 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1497
1498 /* Big hammer */
1499 if (!ha->flags.host_shutting_down &&
1500 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
1501 qlt_disable_vha(vha);
1502
1503 /* Wait for sessions to clear out (just in case) */
1504 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1505 return 0;
1506 }
1507 EXPORT_SYMBOL(qlt_stop_phase1);
1508
1509 /* Called by tcm_qla2xxx configfs code */
1510 void qlt_stop_phase2(struct qla_tgt *tgt)
1511 {
1512 scsi_qla_host_t *vha = tgt->vha;
1513
1514 if (tgt->tgt_stopped) {
1515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1516 "Already in tgt->tgt_stopped state\n");
1517 dump_stack();
1518 return;
1519 }
1520 if (!tgt->tgt_stop) {
1521 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1522 "%s: phase1 stop is not completed\n", __func__);
1523 dump_stack();
1524 return;
1525 }
1526
1527 mutex_lock(&vha->vha_tgt.tgt_mutex);
1528 tgt->tgt_stop = 0;
1529 tgt->tgt_stopped = 1;
1530 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1531
1532 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
1533 tgt);
1534 }
1535 EXPORT_SYMBOL(qlt_stop_phase2);
1536
1537 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
1538 static void qlt_release(struct qla_tgt *tgt)
1539 {
1540 scsi_qla_host_t *vha = tgt->vha;
1541 void *node;
1542 u64 key = 0;
1543 u16 i;
1544 struct qla_qpair_hint *h;
1545 struct qla_hw_data *ha = vha->hw;
1546
1547 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1548 !tgt->tgt_stopped)
1549 qlt_stop_phase1(tgt);
1550
1551 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
1552 qlt_stop_phase2(tgt);
1553
1554 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1555 unsigned long flags;
1556
1557 h = &tgt->qphints[i];
1558 if (h->qpair) {
1559 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1560 list_del(&h->hint_elem);
1561 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1562 h->qpair = NULL;
1563 }
1564 }
1565 kfree(tgt->qphints);
1566 mutex_lock(&qla_tgt_mutex);
1567 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1568 mutex_unlock(&qla_tgt_mutex);
1569
1570 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1571 btree_remove64(&tgt->lun_qpair_map, key);
1572
1573 btree_destroy64(&tgt->lun_qpair_map);
1574
1575 if (vha->vp_idx)
1576 if (ha->tgt.tgt_ops &&
1577 ha->tgt.tgt_ops->remove_target &&
1578 vha->vha_tgt.target_lport_ptr)
1579 ha->tgt.tgt_ops->remove_target(vha);
1580
1581 vha->vha_tgt.qla_tgt = NULL;
1582
1583 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1584 "Release of tgt %p finished\n", tgt);
1585
1586 kfree(tgt);
1587 }
1588
1589 /* ha->hardware_lock supposed to be held on entry */
1590 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1591 const void *param, unsigned int param_size)
1592 {
1593 struct qla_tgt_sess_work_param *prm;
1594 unsigned long flags;
1595
1596 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1597 if (!prm) {
1598 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1599 "qla_target(%d): Unable to create session "
1600 "work, command will be refused", 0);
1601 return -ENOMEM;
1602 }
1603
1604 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1605 "Scheduling work (type %d, prm %p)"
1606 " to find session for param %p (size %d, tgt %p)\n",
1607 type, prm, param, param_size, tgt);
1608
1609 prm->type = type;
1610 memcpy(&prm->tm_iocb, param, param_size);
1611
1612 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1613 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1614 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1615
1616 schedule_work(&tgt->sess_work);
1617
1618 return 0;
1619 }
1620
1621 /*
1622 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1623 */
1624 static void qlt_send_notify_ack(struct qla_qpair *qpair,
1625 struct imm_ntfy_from_isp *ntfy,
1626 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1627 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1628 {
1629 struct scsi_qla_host *vha = qpair->vha;
1630 struct qla_hw_data *ha = vha->hw;
1631 request_t *pkt;
1632 struct nack_to_isp *nack;
1633
1634 if (!ha->flags.fw_started)
1635 return;
1636
1637 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1638
1639 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
1640 if (!pkt) {
1641 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1642 "qla_target(%d): %s failed: unable to allocate "
1643 "request packet\n", vha->vp_idx, __func__);
1644 return;
1645 }
1646
1647 if (vha->vha_tgt.qla_tgt != NULL)
1648 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1649
1650 pkt->entry_type = NOTIFY_ACK_TYPE;
1651 pkt->entry_count = 1;
1652
1653 nack = (struct nack_to_isp *)pkt;
1654 nack->ox_id = ntfy->ox_id;
1655
1656 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
1657 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1658 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1659 nack->u.isp24.flags = ntfy->u.isp24.flags &
1660 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1661 }
1662 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1663 nack->u.isp24.status = ntfy->u.isp24.status;
1664 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1665 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1666 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1667 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1668 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1669 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1670 nack->u.isp24.srr_reject_code = srr_reject_code;
1671 nack->u.isp24.srr_reject_code_expl = srr_explan;
1672 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1673
1674 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1675 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1676 vha->vp_idx, nack->u.isp24.status);
1677
1678 /* Memory Barrier */
1679 wmb();
1680 qla2x00_start_iocbs(vha, qpair->req);
1681 }
1682
1683 /*
1684 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1685 */
1686 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
1687 struct abts_recv_from_24xx *abts, uint32_t status,
1688 bool ids_reversed)
1689 {
1690 struct scsi_qla_host *vha = qpair->vha;
1691 struct qla_hw_data *ha = vha->hw;
1692 struct abts_resp_to_24xx *resp;
1693 uint32_t f_ctl;
1694 uint8_t *p;
1695
1696 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1697 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1698 ha, abts, status);
1699
1700 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1701 NULL);
1702 if (!resp) {
1703 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1704 "qla_target(%d): %s failed: unable to allocate "
1705 "request packet", vha->vp_idx, __func__);
1706 return;
1707 }
1708
1709 resp->entry_type = ABTS_RESP_24XX;
1710 resp->entry_count = 1;
1711 resp->nport_handle = abts->nport_handle;
1712 resp->vp_index = vha->vp_idx;
1713 resp->sof_type = abts->sof_type;
1714 resp->exchange_address = abts->exchange_address;
1715 resp->fcp_hdr_le = abts->fcp_hdr_le;
1716 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1717 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1718 F_CTL_SEQ_INITIATIVE);
1719 p = (uint8_t *)&f_ctl;
1720 resp->fcp_hdr_le.f_ctl[0] = *p++;
1721 resp->fcp_hdr_le.f_ctl[1] = *p++;
1722 resp->fcp_hdr_le.f_ctl[2] = *p;
1723 if (ids_reversed) {
1724 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1725 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1726 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1727 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1728 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1729 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1730 } else {
1731 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1732 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1733 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1734 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1735 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1736 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1737 }
1738 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1739 if (status == FCP_TMF_CMPL) {
1740 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1741 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1742 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1743 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1744 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1745 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1746 } else {
1747 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1748 resp->payload.ba_rjt.reason_code =
1749 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1750 /* Other bytes are zero */
1751 }
1752
1753 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1754
1755 /* Memory Barrier */
1756 wmb();
1757 if (qpair->reqq_start_iocbs)
1758 qpair->reqq_start_iocbs(qpair);
1759 else
1760 qla2x00_start_iocbs(vha, qpair->req);
1761 }
1762
1763 /*
1764 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1765 */
1766 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1767 struct abts_resp_from_24xx_fw *entry)
1768 {
1769 struct ctio7_to_24xx *ctio;
1770
1771 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1772 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1773
1774 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
1775 vha->hw->base_qpair, NULL);
1776 if (ctio == NULL) {
1777 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1778 "qla_target(%d): %s failed: unable to allocate "
1779 "request packet\n", vha->vp_idx, __func__);
1780 return;
1781 }
1782
1783 /*
1784 * We've got on entrance firmware's response on by us generated
1785 * ABTS response. So, in it ID fields are reversed.
1786 */
1787
1788 ctio->entry_type = CTIO_TYPE7;
1789 ctio->entry_count = 1;
1790 ctio->nport_handle = entry->nport_handle;
1791 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1792 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1793 ctio->vp_index = vha->vp_idx;
1794 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1795 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1796 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1797 ctio->exchange_addr = entry->exchange_addr_to_abort;
1798 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1799 CTIO7_FLAGS_TERMINATE);
1800 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
1801
1802 /* Memory Barrier */
1803 wmb();
1804 qla2x00_start_iocbs(vha, vha->req);
1805
1806 qlt_24xx_send_abts_resp(vha->hw->base_qpair,
1807 (struct abts_recv_from_24xx *)entry,
1808 FCP_TMF_CMPL, true);
1809 }
1810
1811 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1812 {
1813 struct qla_tgt_sess_op *op;
1814 struct qla_tgt_cmd *cmd;
1815 unsigned long flags;
1816
1817 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1818 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1819 if (tag == op->atio.u.isp24.exchange_addr) {
1820 op->aborted = true;
1821 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1822 return 1;
1823 }
1824 }
1825
1826 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1827 if (tag == op->atio.u.isp24.exchange_addr) {
1828 op->aborted = true;
1829 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1830 return 1;
1831 }
1832 }
1833
1834 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1835 if (tag == cmd->atio.u.isp24.exchange_addr) {
1836 cmd->aborted = 1;
1837 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1838 return 1;
1839 }
1840 }
1841 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1842
1843 return 0;
1844 }
1845
1846 /* drop cmds for the given lun
1847 * XXX only looks for cmds on the port through which lun reset was recieved
1848 * XXX does not go through the list of other port (which may have cmds
1849 * for the same lun)
1850 */
1851 static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1852 u64 lun, uint8_t *s_id)
1853 {
1854 struct qla_tgt_sess_op *op;
1855 struct qla_tgt_cmd *cmd;
1856 uint32_t key;
1857 unsigned long flags;
1858
1859 key = sid_to_key(s_id);
1860 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1861 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1862 uint32_t op_key;
1863 u64 op_lun;
1864
1865 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1866 op_lun = scsilun_to_int(
1867 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1868 if (op_key == key && op_lun == lun)
1869 op->aborted = true;
1870 }
1871
1872 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1873 uint32_t op_key;
1874 u64 op_lun;
1875
1876 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1877 op_lun = scsilun_to_int(
1878 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1879 if (op_key == key && op_lun == lun)
1880 op->aborted = true;
1881 }
1882
1883 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1884 uint32_t cmd_key;
1885 u64 cmd_lun;
1886
1887 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1888 cmd_lun = scsilun_to_int(
1889 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1890 if (cmd_key == key && cmd_lun == lun)
1891 cmd->aborted = 1;
1892 }
1893 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1894 }
1895
1896 /* ha->hardware_lock supposed to be held on entry */
1897 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1898 struct abts_recv_from_24xx *abts, struct fc_port *sess)
1899 {
1900 struct qla_hw_data *ha = vha->hw;
1901 struct qla_tgt_mgmt_cmd *mcmd;
1902 int rc;
1903
1904 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1905 /* send TASK_ABORT response immediately */
1906 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false);
1907 return 0;
1908 }
1909
1910 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1911 "qla_target(%d): task abort (tag=%d)\n",
1912 vha->vp_idx, abts->exchange_addr_to_abort);
1913
1914 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1915 if (mcmd == NULL) {
1916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1917 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1918 vha->vp_idx, __func__);
1919 return -ENOMEM;
1920 }
1921 memset(mcmd, 0, sizeof(*mcmd));
1922
1923 mcmd->sess = sess;
1924 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1925 mcmd->reset_count = ha->base_qpair->chip_reset;
1926 mcmd->tmr_func = QLA_TGT_ABTS;
1927 mcmd->qpair = ha->base_qpair;
1928 mcmd->vha = vha;
1929
1930 /*
1931 * LUN is looked up by target-core internally based on the passed
1932 * abts->exchange_addr_to_abort tag.
1933 */
1934 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func,
1935 abts->exchange_addr_to_abort);
1936 if (rc != 0) {
1937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1938 "qla_target(%d): tgt_ops->handle_tmr()"
1939 " failed: %d", vha->vp_idx, rc);
1940 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1941 return -EFAULT;
1942 }
1943
1944 return 0;
1945 }
1946
1947 /*
1948 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1949 */
1950 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1951 struct abts_recv_from_24xx *abts)
1952 {
1953 struct qla_hw_data *ha = vha->hw;
1954 struct fc_port *sess;
1955 uint32_t tag = abts->exchange_addr_to_abort;
1956 uint8_t s_id[3];
1957 int rc;
1958 unsigned long flags;
1959
1960 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1962 "qla_target(%d): ABTS: Abort Sequence not "
1963 "supported\n", vha->vp_idx);
1964 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1965 false);
1966 return;
1967 }
1968
1969 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1971 "qla_target(%d): ABTS: Unknown Exchange "
1972 "Address received\n", vha->vp_idx);
1973 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1974 false);
1975 return;
1976 }
1977
1978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1979 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1980 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1981 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1982 le32_to_cpu(abts->fcp_hdr_le.parameter));
1983
1984 s_id[0] = abts->fcp_hdr_le.s_id[2];
1985 s_id[1] = abts->fcp_hdr_le.s_id[1];
1986 s_id[2] = abts->fcp_hdr_le.s_id[0];
1987
1988 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1989 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1990 if (!sess) {
1991 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1992 "qla_target(%d): task abort for non-existant session\n",
1993 vha->vp_idx);
1994 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
1995 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1996
1997 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1998
1999 if (rc != 0) {
2000 qlt_24xx_send_abts_resp(ha->base_qpair, abts,
2001 FCP_TMF_REJECTED, false);
2002 }
2003 return;
2004 }
2005 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2006
2007
2008 if (sess->deleted) {
2009 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2010 false);
2011 return;
2012 }
2013
2014 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2015 if (rc != 0) {
2016 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2017 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2018 vha->vp_idx, rc);
2019 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2020 false);
2021 return;
2022 }
2023 }
2024
2025 /*
2026 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2027 */
2028 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2029 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2030 {
2031 struct scsi_qla_host *ha = mcmd->vha;
2032 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2033 struct ctio7_to_24xx *ctio;
2034 uint16_t temp;
2035
2036 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2037 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2038 ha, atio, resp_code);
2039
2040
2041 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2042 if (ctio == NULL) {
2043 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2044 "qla_target(%d): %s failed: unable to allocate "
2045 "request packet\n", ha->vp_idx, __func__);
2046 return;
2047 }
2048
2049 ctio->entry_type = CTIO_TYPE7;
2050 ctio->entry_count = 1;
2051 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2052 ctio->nport_handle = mcmd->sess->loop_id;
2053 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2054 ctio->vp_index = ha->vp_idx;
2055 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2056 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2057 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2058 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2059 temp = (atio->u.isp24.attr << 9)|
2060 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2061 ctio->u.status1.flags = cpu_to_le16(temp);
2062 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2063 ctio->u.status1.ox_id = cpu_to_le16(temp);
2064 ctio->u.status1.scsi_status =
2065 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2066 ctio->u.status1.response_len = cpu_to_le16(8);
2067 ctio->u.status1.sense_data[0] = resp_code;
2068
2069 /* Memory Barrier */
2070 wmb();
2071 if (qpair->reqq_start_iocbs)
2072 qpair->reqq_start_iocbs(qpair);
2073 else
2074 qla2x00_start_iocbs(ha, qpair->req);
2075 }
2076
2077 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2078 {
2079 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2080 }
2081 EXPORT_SYMBOL(qlt_free_mcmd);
2082
2083 /*
2084 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2085 * reacquire
2086 */
2087 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
2088 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2089 {
2090 struct atio_from_isp *atio = &cmd->atio;
2091 struct ctio7_to_24xx *ctio;
2092 uint16_t temp;
2093 struct scsi_qla_host *vha = cmd->vha;
2094
2095 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2096 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2097 "sense_key=%02x, asc=%02x, ascq=%02x",
2098 vha, atio, scsi_status, sense_key, asc, ascq);
2099
2100 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2101 if (!ctio) {
2102 ql_dbg(ql_dbg_async, vha, 0x3067,
2103 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2104 vha->host_no, __func__);
2105 goto out;
2106 }
2107
2108 ctio->entry_type = CTIO_TYPE7;
2109 ctio->entry_count = 1;
2110 ctio->handle = QLA_TGT_SKIP_HANDLE;
2111 ctio->nport_handle = cmd->sess->loop_id;
2112 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2113 ctio->vp_index = vha->vp_idx;
2114 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2115 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2116 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2117 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2118 temp = (atio->u.isp24.attr << 9) |
2119 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2120 ctio->u.status1.flags = cpu_to_le16(temp);
2121 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2122 ctio->u.status1.ox_id = cpu_to_le16(temp);
2123 ctio->u.status1.scsi_status =
2124 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2125 ctio->u.status1.response_len = cpu_to_le16(18);
2126 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2127
2128 if (ctio->u.status1.residual != 0)
2129 ctio->u.status1.scsi_status |=
2130 cpu_to_le16(SS_RESIDUAL_UNDER);
2131
2132 /* Response code and sense key */
2133 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2134 (&ctio->u.status1.sense_data)[0]);
2135 /* Additional sense length */
2136 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2137 /* ASC and ASCQ */
2138 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2139 (&ctio->u.status1.sense_data)[3]);
2140
2141 /* Memory Barrier */
2142 wmb();
2143
2144 if (qpair->reqq_start_iocbs)
2145 qpair->reqq_start_iocbs(qpair);
2146 else
2147 qla2x00_start_iocbs(vha, qpair->req);
2148
2149 out:
2150 return;
2151 }
2152
2153 /* callback from target fabric module code */
2154 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2155 {
2156 struct scsi_qla_host *vha = mcmd->sess->vha;
2157 struct qla_hw_data *ha = vha->hw;
2158 unsigned long flags;
2159 struct qla_qpair *qpair = mcmd->qpair;
2160
2161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2162 "TM response mcmd (%p) status %#x state %#x",
2163 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2164
2165 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2166
2167 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
2168 /*
2169 * Either the port is not online or this request was from
2170 * previous life, just abort the processing.
2171 */
2172 ql_dbg(ql_dbg_async, vha, 0xe100,
2173 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2174 vha->flags.online, qla2x00_reset_active(vha),
2175 mcmd->reset_count, qpair->chip_reset);
2176 ha->tgt.tgt_ops->free_mcmd(mcmd);
2177 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2178 return;
2179 }
2180
2181 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2182 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2183 ELS_LOGO ||
2184 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2185 ELS_PRLO ||
2186 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2187 ELS_TPRLO) {
2188 ql_dbg(ql_dbg_disc, vha, 0x2106,
2189 "TM response logo %phC status %#x state %#x",
2190 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2191 mcmd->flags);
2192 qlt_schedule_sess_for_deletion_lock(mcmd->sess);
2193 } else {
2194 qlt_send_notify_ack(vha->hw->base_qpair,
2195 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2196 }
2197 } else {
2198 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
2199 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
2200 mcmd->fc_tm_rsp, false);
2201 else
2202 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2203 mcmd->fc_tm_rsp);
2204 }
2205 /*
2206 * Make the callback for ->free_mcmd() to queue_work() and invoke
2207 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2208 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2209 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2210 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2211 * qlt_xmit_tm_rsp() returns here..
2212 */
2213 ha->tgt.tgt_ops->free_mcmd(mcmd);
2214 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2215 }
2216 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2217
2218 /* No locks */
2219 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2220 {
2221 struct qla_tgt_cmd *cmd = prm->cmd;
2222
2223 BUG_ON(cmd->sg_cnt == 0);
2224
2225 prm->sg = (struct scatterlist *)cmd->sg;
2226 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg,
2227 cmd->sg_cnt, cmd->dma_data_direction);
2228 if (unlikely(prm->seg_cnt == 0))
2229 goto out_err;
2230
2231 prm->cmd->sg_mapped = 1;
2232
2233 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2234 /*
2235 * If greater than four sg entries then we need to allocate
2236 * the continuation entries
2237 */
2238 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
2239 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2240 QLA_TGT_DATASEGS_PER_CMD_24XX,
2241 QLA_TGT_DATASEGS_PER_CONT_24XX);
2242 } else {
2243 /* DIF */
2244 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2245 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2246 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2247 prm->tot_dsds = prm->seg_cnt;
2248 } else
2249 prm->tot_dsds = prm->seg_cnt;
2250
2251 if (cmd->prot_sg_cnt) {
2252 prm->prot_sg = cmd->prot_sg;
2253 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev,
2254 cmd->prot_sg, cmd->prot_sg_cnt,
2255 cmd->dma_data_direction);
2256 if (unlikely(prm->prot_seg_cnt == 0))
2257 goto out_err;
2258
2259 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2260 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2261 /* Dif Bundling not support here */
2262 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2263 cmd->blk_sz);
2264 prm->tot_dsds += prm->prot_seg_cnt;
2265 } else
2266 prm->tot_dsds += prm->prot_seg_cnt;
2267 }
2268 }
2269
2270 return 0;
2271
2272 out_err:
2273 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2274 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2275 0, prm->cmd->sg_cnt);
2276 return -1;
2277 }
2278
2279 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2280 {
2281 struct qla_hw_data *ha;
2282 struct qla_qpair *qpair;
2283 if (!cmd->sg_mapped)
2284 return;
2285
2286 qpair = cmd->qpair;
2287
2288 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt,
2289 cmd->dma_data_direction);
2290 cmd->sg_mapped = 0;
2291
2292 if (cmd->prot_sg_cnt)
2293 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
2294 cmd->dma_data_direction);
2295
2296 if (!cmd->ctx)
2297 return;
2298 ha = vha->hw;
2299 if (cmd->ctx_dsd_alloced)
2300 qla2x00_clean_dsd_pool(ha, cmd->ctx);
2301
2302 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2303 }
2304
2305 static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2306 uint32_t req_cnt)
2307 {
2308 uint32_t cnt;
2309 struct req_que *req = qpair->req;
2310
2311 if (req->cnt < (req_cnt + 2)) {
2312 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2313 RD_REG_DWORD_RELAXED(req->req_q_out));
2314
2315 if (req->ring_index < cnt)
2316 req->cnt = cnt - req->ring_index;
2317 else
2318 req->cnt = req->length - (req->ring_index - cnt);
2319
2320 if (unlikely(req->cnt < (req_cnt + 2)))
2321 return -EAGAIN;
2322 }
2323
2324 req->cnt -= req_cnt;
2325
2326 return 0;
2327 }
2328
2329 /*
2330 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2331 */
2332 static inline void *qlt_get_req_pkt(struct req_que *req)
2333 {
2334 /* Adjust ring index. */
2335 req->ring_index++;
2336 if (req->ring_index == req->length) {
2337 req->ring_index = 0;
2338 req->ring_ptr = req->ring;
2339 } else {
2340 req->ring_ptr++;
2341 }
2342 return (cont_entry_t *)req->ring_ptr;
2343 }
2344
2345 /* ha->hardware_lock supposed to be held on entry */
2346 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2347 {
2348 uint32_t h;
2349 int index;
2350 uint8_t found = 0;
2351 struct req_que *req = qpair->req;
2352
2353 h = req->current_outstanding_cmd;
2354
2355 for (index = 1; index < req->num_outstanding_cmds; index++) {
2356 h++;
2357 if (h == req->num_outstanding_cmds)
2358 h = 1;
2359
2360 if (h == QLA_TGT_SKIP_HANDLE)
2361 continue;
2362
2363 if (!req->outstanding_cmds[h]) {
2364 found = 1;
2365 break;
2366 }
2367 }
2368
2369 if (found) {
2370 req->current_outstanding_cmd = h;
2371 } else {
2372 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2373 "qla_target(%d): Ran out of empty cmd slots\n",
2374 qpair->vha->vp_idx);
2375 h = QLA_TGT_NULL_HANDLE;
2376 }
2377
2378 return h;
2379 }
2380
2381 /* ha->hardware_lock supposed to be held on entry */
2382 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2383 struct qla_tgt_prm *prm)
2384 {
2385 uint32_t h;
2386 struct ctio7_to_24xx *pkt;
2387 struct atio_from_isp *atio = &prm->cmd->atio;
2388 uint16_t temp;
2389
2390 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2391 prm->pkt = pkt;
2392 memset(pkt, 0, sizeof(*pkt));
2393
2394 pkt->entry_type = CTIO_TYPE7;
2395 pkt->entry_count = (uint8_t)prm->req_cnt;
2396 pkt->vp_index = prm->cmd->vp_idx;
2397
2398 h = qlt_make_handle(qpair);
2399 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2400 /*
2401 * CTIO type 7 from the firmware doesn't provide a way to
2402 * know the initiator's LOOP ID, hence we can't find
2403 * the session and, so, the command.
2404 */
2405 return -EAGAIN;
2406 } else
2407 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2408
2409 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2410 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2411 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2412 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2413 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2414 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2415 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2416 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2417 temp = atio->u.isp24.attr << 9;
2418 pkt->u.status0.flags |= cpu_to_le16(temp);
2419 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2420 pkt->u.status0.ox_id = cpu_to_le16(temp);
2421 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2422
2423 return 0;
2424 }
2425
2426 /*
2427 * ha->hardware_lock supposed to be held on entry. We have already made sure
2428 * that there is sufficient amount of request entries to not drop it.
2429 */
2430 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2431 {
2432 int cnt;
2433 uint32_t *dword_ptr;
2434
2435 /* Build continuation packets */
2436 while (prm->seg_cnt > 0) {
2437 cont_a64_entry_t *cont_pkt64 =
2438 (cont_a64_entry_t *)qlt_get_req_pkt(
2439 prm->cmd->qpair->req);
2440
2441 /*
2442 * Make sure that from cont_pkt64 none of
2443 * 64-bit specific fields used for 32-bit
2444 * addressing. Cast to (cont_entry_t *) for
2445 * that.
2446 */
2447
2448 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2449
2450 cont_pkt64->entry_count = 1;
2451 cont_pkt64->sys_define = 0;
2452
2453 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2454 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2455
2456 /* Load continuation entry data segments */
2457 for (cnt = 0;
2458 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2459 cnt++, prm->seg_cnt--) {
2460 *dword_ptr++ =
2461 cpu_to_le32(pci_dma_lo32
2462 (sg_dma_address(prm->sg)));
2463 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2464 (sg_dma_address(prm->sg)));
2465 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2466
2467 prm->sg = sg_next(prm->sg);
2468 }
2469 }
2470 }
2471
2472 /*
2473 * ha->hardware_lock supposed to be held on entry. We have already made sure
2474 * that there is sufficient amount of request entries to not drop it.
2475 */
2476 static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2477 {
2478 int cnt;
2479 uint32_t *dword_ptr;
2480 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2481
2482 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2483
2484 /* Setup packet address segment pointer */
2485 dword_ptr = pkt24->u.status0.dseg_0_address;
2486
2487 /* Set total data segment count */
2488 if (prm->seg_cnt)
2489 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2490
2491 if (prm->seg_cnt == 0) {
2492 /* No data transfer */
2493 *dword_ptr++ = 0;
2494 *dword_ptr = 0;
2495 return;
2496 }
2497
2498 /* If scatter gather */
2499
2500 /* Load command entry data segments */
2501 for (cnt = 0;
2502 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2503 cnt++, prm->seg_cnt--) {
2504 *dword_ptr++ =
2505 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2506
2507 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2508 sg_dma_address(prm->sg)));
2509
2510 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2511
2512 prm->sg = sg_next(prm->sg);
2513 }
2514
2515 qlt_load_cont_data_segments(prm);
2516 }
2517
2518 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2519 {
2520 return cmd->bufflen > 0;
2521 }
2522
2523 static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2524 {
2525 struct qla_tgt_cmd *cmd;
2526 struct scsi_qla_host *vha;
2527
2528 /* asc 0x10=dif error */
2529 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2530 cmd = prm->cmd;
2531 vha = cmd->vha;
2532 /* ASCQ */
2533 switch (prm->sense_buffer[13]) {
2534 case 1:
2535 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
2536 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2537 "se_cmd=%p tag[%x]",
2538 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2539 cmd->atio.u.isp24.exchange_addr);
2540 break;
2541 case 2:
2542 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
2543 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2544 "se_cmd=%p tag[%x]",
2545 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2546 cmd->atio.u.isp24.exchange_addr);
2547 break;
2548 case 3:
2549 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
2550 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2551 "se_cmd=%p tag[%x]",
2552 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2553 cmd->atio.u.isp24.exchange_addr);
2554 break;
2555 default:
2556 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
2557 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2558 "se_cmd=%p tag[%x]",
2559 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2560 cmd->atio.u.isp24.exchange_addr);
2561 break;
2562 }
2563 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
2564 }
2565 }
2566
2567 /*
2568 * Called without ha->hardware_lock held
2569 */
2570 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2571 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2572 uint32_t *full_req_cnt)
2573 {
2574 struct se_cmd *se_cmd = &cmd->se_cmd;
2575 struct qla_qpair *qpair = cmd->qpair;
2576
2577 prm->cmd = cmd;
2578 prm->tgt = cmd->tgt;
2579 prm->pkt = NULL;
2580 prm->rq_result = scsi_status;
2581 prm->sense_buffer = &cmd->sense_buffer[0];
2582 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2583 prm->sg = NULL;
2584 prm->seg_cnt = -1;
2585 prm->req_cnt = 1;
2586 prm->residual = 0;
2587 prm->add_status_pkt = 0;
2588 prm->prot_sg = NULL;
2589 prm->prot_seg_cnt = 0;
2590 prm->tot_dsds = 0;
2591
2592 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2593 if (qlt_pci_map_calc_cnt(prm) != 0)
2594 return -EAGAIN;
2595 }
2596
2597 *full_req_cnt = prm->req_cnt;
2598
2599 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2600 prm->residual = se_cmd->residual_count;
2601 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
2602 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2603 prm->residual, se_cmd->tag,
2604 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2605 cmd->bufflen, prm->rq_result);
2606 prm->rq_result |= SS_RESIDUAL_UNDER;
2607 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2608 prm->residual = se_cmd->residual_count;
2609 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
2610 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2611 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2612 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2613 prm->rq_result |= SS_RESIDUAL_OVER;
2614 }
2615
2616 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2617 /*
2618 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2619 * ignored in *xmit_response() below
2620 */
2621 if (qlt_has_data(cmd)) {
2622 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2623 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2624 (prm->rq_result != 0))) {
2625 prm->add_status_pkt = 1;
2626 (*full_req_cnt)++;
2627 }
2628 }
2629 }
2630
2631 return 0;
2632 }
2633
2634 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2635 int sending_sense)
2636 {
2637 if (cmd->qpair->enable_class_2)
2638 return 0;
2639
2640 if (sending_sense)
2641 return cmd->conf_compl_supported;
2642 else
2643 return cmd->qpair->enable_explicit_conf &&
2644 cmd->conf_compl_supported;
2645 }
2646
2647 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2648 struct qla_tgt_prm *prm)
2649 {
2650 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2651 (uint32_t)sizeof(ctio->u.status1.sense_data));
2652 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2653 if (qlt_need_explicit_conf(prm->cmd, 0)) {
2654 ctio->u.status0.flags |= cpu_to_le16(
2655 CTIO7_FLAGS_EXPLICIT_CONFORM |
2656 CTIO7_FLAGS_CONFORM_REQ);
2657 }
2658 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2659 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2660 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2661 int i;
2662
2663 if (qlt_need_explicit_conf(prm->cmd, 1)) {
2664 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2665 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2666 "Skipping EXPLICIT_CONFORM and "
2667 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2668 "non GOOD status\n");
2669 goto skip_explict_conf;
2670 }
2671 ctio->u.status1.flags |= cpu_to_le16(
2672 CTIO7_FLAGS_EXPLICIT_CONFORM |
2673 CTIO7_FLAGS_CONFORM_REQ);
2674 }
2675 skip_explict_conf:
2676 ctio->u.status1.flags &=
2677 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2678 ctio->u.status1.flags |=
2679 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2680 ctio->u.status1.scsi_status |=
2681 cpu_to_le16(SS_SENSE_LEN_VALID);
2682 ctio->u.status1.sense_length =
2683 cpu_to_le16(prm->sense_buffer_len);
2684 for (i = 0; i < prm->sense_buffer_len/4; i++)
2685 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2686 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2687
2688 qlt_print_dif_err(prm);
2689
2690 } else {
2691 ctio->u.status1.flags &=
2692 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2693 ctio->u.status1.flags |=
2694 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2695 ctio->u.status1.sense_length = 0;
2696 memset(ctio->u.status1.sense_data, 0,
2697 sizeof(ctio->u.status1.sense_data));
2698 }
2699
2700 /* Sense with len > 24, is it possible ??? */
2701 }
2702
2703 static inline int
2704 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2705 {
2706 switch (se_cmd->prot_op) {
2707 case TARGET_PROT_DOUT_INSERT:
2708 case TARGET_PROT_DIN_STRIP:
2709 if (ql2xenablehba_err_chk >= 1)
2710 return 1;
2711 break;
2712 case TARGET_PROT_DOUT_PASS:
2713 case TARGET_PROT_DIN_PASS:
2714 if (ql2xenablehba_err_chk >= 2)
2715 return 1;
2716 break;
2717 case TARGET_PROT_DIN_INSERT:
2718 case TARGET_PROT_DOUT_STRIP:
2719 return 1;
2720 default:
2721 break;
2722 }
2723 return 0;
2724 }
2725
2726 static inline int
2727 qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2728 {
2729 switch (se_cmd->prot_op) {
2730 case TARGET_PROT_DIN_INSERT:
2731 case TARGET_PROT_DOUT_INSERT:
2732 case TARGET_PROT_DIN_STRIP:
2733 case TARGET_PROT_DOUT_STRIP:
2734 case TARGET_PROT_DIN_PASS:
2735 case TARGET_PROT_DOUT_PASS:
2736 return 1;
2737 default:
2738 return 0;
2739 }
2740 return 0;
2741 }
2742
2743 /*
2744 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
2745 */
2746 static void
2747 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2748 uint16_t *pfw_prot_opts)
2749 {
2750 struct se_cmd *se_cmd = &cmd->se_cmd;
2751 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2752 scsi_qla_host_t *vha = cmd->tgt->vha;
2753 struct qla_hw_data *ha = vha->hw;
2754 uint32_t t32 = 0;
2755
2756 /*
2757 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
2758 * have been immplemented by TCM, before AppTag is avail.
2759 * Look for modesense_handlers[]
2760 */
2761 ctx->app_tag = 0;
2762 ctx->app_tag_mask[0] = 0x0;
2763 ctx->app_tag_mask[1] = 0x0;
2764
2765 if (IS_PI_UNINIT_CAPABLE(ha)) {
2766 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2767 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2768 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2769 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2770 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2771 }
2772
2773 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2774
2775 switch (se_cmd->prot_type) {
2776 case TARGET_DIF_TYPE0_PROT:
2777 /*
2778 * No check for ql2xenablehba_err_chk, as it
2779 * would be an I/O error if hba tag generation
2780 * is not done.
2781 */
2782 ctx->ref_tag = cpu_to_le32(lba);
2783 /* enable ALL bytes of the ref tag */
2784 ctx->ref_tag_mask[0] = 0xff;
2785 ctx->ref_tag_mask[1] = 0xff;
2786 ctx->ref_tag_mask[2] = 0xff;
2787 ctx->ref_tag_mask[3] = 0xff;
2788 break;
2789 case TARGET_DIF_TYPE1_PROT:
2790 /*
2791 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2792 * REF tag, and 16 bit app tag.
2793 */
2794 ctx->ref_tag = cpu_to_le32(lba);
2795 if (!qla_tgt_ref_mask_check(se_cmd) ||
2796 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2797 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2798 break;
2799 }
2800 /* enable ALL bytes of the ref tag */
2801 ctx->ref_tag_mask[0] = 0xff;
2802 ctx->ref_tag_mask[1] = 0xff;
2803 ctx->ref_tag_mask[2] = 0xff;
2804 ctx->ref_tag_mask[3] = 0xff;
2805 break;
2806 case TARGET_DIF_TYPE2_PROT:
2807 /*
2808 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2809 * tag has to match LBA in CDB + N
2810 */
2811 ctx->ref_tag = cpu_to_le32(lba);
2812 if (!qla_tgt_ref_mask_check(se_cmd) ||
2813 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2814 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2815 break;
2816 }
2817 /* enable ALL bytes of the ref tag */
2818 ctx->ref_tag_mask[0] = 0xff;
2819 ctx->ref_tag_mask[1] = 0xff;
2820 ctx->ref_tag_mask[2] = 0xff;
2821 ctx->ref_tag_mask[3] = 0xff;
2822 break;
2823 case TARGET_DIF_TYPE3_PROT:
2824 /* For TYPE 3 protection: 16 bit GUARD only */
2825 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2826 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2827 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2828 break;
2829 }
2830 }
2831
2832 static inline int
2833 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
2834 {
2835 uint32_t *cur_dsd;
2836 uint32_t transfer_length = 0;
2837 uint32_t data_bytes;
2838 uint32_t dif_bytes;
2839 uint8_t bundling = 1;
2840 uint8_t *clr_ptr;
2841 struct crc_context *crc_ctx_pkt = NULL;
2842 struct qla_hw_data *ha;
2843 struct ctio_crc2_to_fw *pkt;
2844 dma_addr_t crc_ctx_dma;
2845 uint16_t fw_prot_opts = 0;
2846 struct qla_tgt_cmd *cmd = prm->cmd;
2847 struct se_cmd *se_cmd = &cmd->se_cmd;
2848 uint32_t h;
2849 struct atio_from_isp *atio = &prm->cmd->atio;
2850 struct qla_tc_param tc;
2851 uint16_t t16;
2852 scsi_qla_host_t *vha = cmd->vha;
2853
2854 ha = vha->hw;
2855
2856 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
2857 prm->pkt = pkt;
2858 memset(pkt, 0, sizeof(*pkt));
2859
2860 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
2861 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2862 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2863 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2864
2865 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2866 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2867 bundling = 0;
2868
2869 /* Compute dif len and adjust data len to incude protection */
2870 data_bytes = cmd->bufflen;
2871 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2872
2873 switch (se_cmd->prot_op) {
2874 case TARGET_PROT_DIN_INSERT:
2875 case TARGET_PROT_DOUT_STRIP:
2876 transfer_length = data_bytes;
2877 if (cmd->prot_sg_cnt)
2878 data_bytes += dif_bytes;
2879 break;
2880 case TARGET_PROT_DIN_STRIP:
2881 case TARGET_PROT_DOUT_INSERT:
2882 case TARGET_PROT_DIN_PASS:
2883 case TARGET_PROT_DOUT_PASS:
2884 transfer_length = data_bytes + dif_bytes;
2885 break;
2886 default:
2887 BUG();
2888 break;
2889 }
2890
2891 if (!qlt_hba_err_chk_enabled(se_cmd))
2892 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2893 /* HBA error checking enabled */
2894 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2895 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2896 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2897 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2898 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2899 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2900 }
2901
2902 switch (se_cmd->prot_op) {
2903 case TARGET_PROT_DIN_INSERT:
2904 case TARGET_PROT_DOUT_INSERT:
2905 fw_prot_opts |= PO_MODE_DIF_INSERT;
2906 break;
2907 case TARGET_PROT_DIN_STRIP:
2908 case TARGET_PROT_DOUT_STRIP:
2909 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2910 break;
2911 case TARGET_PROT_DIN_PASS:
2912 case TARGET_PROT_DOUT_PASS:
2913 fw_prot_opts |= PO_MODE_DIF_PASS;
2914 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2915 break;
2916 default:/* Normal Request */
2917 fw_prot_opts |= PO_MODE_DIF_PASS;
2918 break;
2919 }
2920
2921 /* ---- PKT ---- */
2922 /* Update entry type to indicate Command Type CRC_2 IOCB */
2923 pkt->entry_type = CTIO_CRC2;
2924 pkt->entry_count = 1;
2925 pkt->vp_index = cmd->vp_idx;
2926
2927 h = qlt_make_handle(qpair);
2928 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2929 /*
2930 * CTIO type 7 from the firmware doesn't provide a way to
2931 * know the initiator's LOOP ID, hence we can't find
2932 * the session and, so, the command.
2933 */
2934 return -EAGAIN;
2935 } else
2936 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2937
2938 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2939 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2940 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2941 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2942 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2943 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2944 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2945 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2946
2947 /* silence compile warning */
2948 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2949 pkt->ox_id = cpu_to_le16(t16);
2950
2951 t16 = (atio->u.isp24.attr << 9);
2952 pkt->flags |= cpu_to_le16(t16);
2953 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2954
2955 /* Set transfer direction */
2956 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2957 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2958 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2959 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2960
2961 pkt->dseg_count = prm->tot_dsds;
2962 /* Fibre channel byte count */
2963 pkt->transfer_length = cpu_to_le32(transfer_length);
2964
2965 /* ----- CRC context -------- */
2966
2967 /* Allocate CRC context from global pool */
2968 crc_ctx_pkt = cmd->ctx =
2969 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2970
2971 if (!crc_ctx_pkt)
2972 goto crc_queuing_error;
2973
2974 /* Zero out CTX area. */
2975 clr_ptr = (uint8_t *)crc_ctx_pkt;
2976 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2977
2978 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2979 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2980
2981 /* Set handle */
2982 crc_ctx_pkt->handle = pkt->handle;
2983
2984 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
2985
2986 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2987 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2988 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2989
2990 if (!bundling) {
2991 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2992 } else {
2993 /*
2994 * Configure Bundling if we need to fetch interlaving
2995 * protection PCI accesses
2996 */
2997 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2998 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2999 crc_ctx_pkt->u.bundling.dseg_count =
3000 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3001 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
3002 }
3003
3004 /* Finish the common fields of CRC pkt */
3005 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3006 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3007 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
3008 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
3009
3010 memset((uint8_t *)&tc, 0 , sizeof(tc));
3011 tc.vha = vha;
3012 tc.blk_sz = cmd->blk_sz;
3013 tc.bufflen = cmd->bufflen;
3014 tc.sg = cmd->sg;
3015 tc.prot_sg = cmd->prot_sg;
3016 tc.ctx = crc_ctx_pkt;
3017 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
3018
3019 /* Walks data segments */
3020 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
3021
3022 if (!bundling && prm->prot_seg_cnt) {
3023 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
3024 prm->tot_dsds, &tc))
3025 goto crc_queuing_error;
3026 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
3027 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
3028 goto crc_queuing_error;
3029
3030 if (bundling && prm->prot_seg_cnt) {
3031 /* Walks dif segments */
3032 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
3033
3034 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3035 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
3036 prm->prot_seg_cnt, &tc))
3037 goto crc_queuing_error;
3038 }
3039 return QLA_SUCCESS;
3040
3041 crc_queuing_error:
3042 /* Cleanup will be performed by the caller */
3043 qpair->req->outstanding_cmds[h] = NULL;
3044
3045 return QLA_FUNCTION_FAILED;
3046 }
3047
3048 /*
3049 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3050 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3051 */
3052 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3053 uint8_t scsi_status)
3054 {
3055 struct scsi_qla_host *vha = cmd->vha;
3056 struct qla_qpair *qpair = cmd->qpair;
3057 struct ctio7_to_24xx *pkt;
3058 struct qla_tgt_prm prm;
3059 uint32_t full_req_cnt = 0;
3060 unsigned long flags = 0;
3061 int res;
3062
3063 if (cmd->sess && cmd->sess->deleted) {
3064 cmd->state = QLA_TGT_STATE_PROCESSED;
3065 if (cmd->sess->logout_completed)
3066 /* no need to terminate. FW already freed exchange. */
3067 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3068 else
3069 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
3070 return 0;
3071 }
3072
3073 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
3074 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
3075 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3076 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3077 &cmd->se_cmd, qpair->id);
3078
3079 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3080 &full_req_cnt);
3081 if (unlikely(res != 0)) {
3082 return res;
3083 }
3084
3085 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3086
3087 if (xmit_type == QLA_TGT_XMIT_STATUS)
3088 qpair->tgt_counters.core_qla_snd_status++;
3089 else
3090 qpair->tgt_counters.core_qla_que_buf++;
3091
3092 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
3093 /*
3094 * Either the port is not online or this request was from
3095 * previous life, just abort the processing.
3096 */
3097 cmd->state = QLA_TGT_STATE_PROCESSED;
3098 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3099 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3100 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3101 vha->flags.online, qla2x00_reset_active(vha),
3102 cmd->reset_count, qpair->chip_reset);
3103 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3104 return 0;
3105 }
3106
3107 /* Does F/W have an IOCBs for this request */
3108 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
3109 if (unlikely(res))
3110 goto out_unmap_unlock;
3111
3112 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3113 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3114 else
3115 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3116 if (unlikely(res != 0)) {
3117 qpair->req->cnt += full_req_cnt;
3118 goto out_unmap_unlock;
3119 }
3120
3121 pkt = (struct ctio7_to_24xx *)prm.pkt;
3122
3123 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3124 pkt->u.status0.flags |=
3125 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
3126 CTIO7_FLAGS_STATUS_MODE_0);
3127
3128 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3129 qlt_load_data_segments(&prm);
3130
3131 if (prm.add_status_pkt == 0) {
3132 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3133 pkt->u.status0.scsi_status =
3134 cpu_to_le16(prm.rq_result);
3135 pkt->u.status0.residual =
3136 cpu_to_le32(prm.residual);
3137 pkt->u.status0.flags |= cpu_to_le16(
3138 CTIO7_FLAGS_SEND_STATUS);
3139 if (qlt_need_explicit_conf(cmd, 0)) {
3140 pkt->u.status0.flags |=
3141 cpu_to_le16(
3142 CTIO7_FLAGS_EXPLICIT_CONFORM |
3143 CTIO7_FLAGS_CONFORM_REQ);
3144 }
3145 }
3146
3147 } else {
3148 /*
3149 * We have already made sure that there is sufficient
3150 * amount of request entries to not drop HW lock in
3151 * req_pkt().
3152 */
3153 struct ctio7_to_24xx *ctio =
3154 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3155 qpair->req);
3156
3157 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
3158 "Building additional status packet 0x%p.\n",
3159 ctio);
3160
3161 /*
3162 * T10Dif: ctio_crc2_to_fw overlay ontop of
3163 * ctio7_to_24xx
3164 */
3165 memcpy(ctio, pkt, sizeof(*ctio));
3166 /* reset back to CTIO7 */
3167 ctio->entry_count = 1;
3168 ctio->entry_type = CTIO_TYPE7;
3169 ctio->dseg_count = 0;
3170 ctio->u.status1.flags &= ~cpu_to_le16(
3171 CTIO7_FLAGS_DATA_IN);
3172
3173 /* Real finish is ctio_m1's finish */
3174 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
3175 pkt->u.status0.flags |= cpu_to_le16(
3176 CTIO7_FLAGS_DONT_RET_CTIO);
3177
3178 /* qlt_24xx_init_ctio_to_isp will correct
3179 * all neccessary fields that's part of CTIO7.
3180 * There should be no residual of CTIO-CRC2 data.
3181 */
3182 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3183 &prm);
3184 }
3185 } else
3186 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3187
3188
3189 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
3190 cmd->cmd_sent_to_fw = 1;
3191
3192 /* Memory Barrier */
3193 wmb();
3194 if (qpair->reqq_start_iocbs)
3195 qpair->reqq_start_iocbs(qpair);
3196 else
3197 qla2x00_start_iocbs(vha, qpair->req);
3198 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3199
3200 return 0;
3201
3202 out_unmap_unlock:
3203 qlt_unmap_sg(vha, cmd);
3204 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3205
3206 return res;
3207 }
3208 EXPORT_SYMBOL(qlt_xmit_response);
3209
3210 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3211 {
3212 struct ctio7_to_24xx *pkt;
3213 struct scsi_qla_host *vha = cmd->vha;
3214 struct qla_tgt *tgt = cmd->tgt;
3215 struct qla_tgt_prm prm;
3216 unsigned long flags = 0;
3217 int res = 0;
3218 struct qla_qpair *qpair = cmd->qpair;
3219
3220 memset(&prm, 0, sizeof(prm));
3221 prm.cmd = cmd;
3222 prm.tgt = tgt;
3223 prm.sg = NULL;
3224 prm.req_cnt = 1;
3225
3226 /* Calculate number of entries and segments required */
3227 if (qlt_pci_map_calc_cnt(&prm) != 0)
3228 return -EAGAIN;
3229
3230 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3231 (cmd->sess && cmd->sess->deleted)) {
3232 /*
3233 * Either the port is not online or this request was from
3234 * previous life, just abort the processing.
3235 */
3236 cmd->state = QLA_TGT_STATE_NEED_DATA;
3237 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3238 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3239 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3240 vha->flags.online, qla2x00_reset_active(vha),
3241 cmd->reset_count, qpair->chip_reset);
3242 return 0;
3243 }
3244
3245 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3246 /* Does F/W have an IOCBs for this request */
3247 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
3248 if (res != 0)
3249 goto out_unlock_free_unmap;
3250 if (cmd->se_cmd.prot_op)
3251 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3252 else
3253 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3254
3255 if (unlikely(res != 0)) {
3256 qpair->req->cnt += prm.req_cnt;
3257 goto out_unlock_free_unmap;
3258 }
3259
3260 pkt = (struct ctio7_to_24xx *)prm.pkt;
3261 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
3262 CTIO7_FLAGS_STATUS_MODE_0);
3263
3264 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3265 qlt_load_data_segments(&prm);
3266
3267 cmd->state = QLA_TGT_STATE_NEED_DATA;
3268 cmd->cmd_sent_to_fw = 1;
3269
3270 /* Memory Barrier */
3271 wmb();
3272 if (qpair->reqq_start_iocbs)
3273 qpair->reqq_start_iocbs(qpair);
3274 else
3275 qla2x00_start_iocbs(vha, qpair->req);
3276 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3277
3278 return res;
3279
3280 out_unlock_free_unmap:
3281 qlt_unmap_sg(vha, cmd);
3282 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3283
3284 return res;
3285 }
3286 EXPORT_SYMBOL(qlt_rdy_to_xfer);
3287
3288
3289 /*
3290 * it is assumed either hardware_lock or qpair lock is held.
3291 */
3292 static void
3293 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
3294 struct ctio_crc_from_fw *sts)
3295 {
3296 uint8_t *ap = &sts->actual_dif[0];
3297 uint8_t *ep = &sts->expected_dif[0];
3298 uint64_t lba = cmd->se_cmd.t_task_lba;
3299 uint8_t scsi_status, sense_key, asc, ascq;
3300 unsigned long flags;
3301 struct scsi_qla_host *vha = cmd->vha;
3302
3303 cmd->trc_flags |= TRC_DIF_ERR;
3304
3305 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3306 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3307 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
3308
3309 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3310 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3311 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
3312
3313 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3314 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
3315
3316 scsi_status = sense_key = asc = ascq = 0;
3317
3318 /* check appl tag */
3319 if (cmd->e_app_tag != cmd->a_app_tag) {
3320 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3321 "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]",
3322 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3323 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3324 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3325 cmd->atio.u.isp24.fcp_hdr.ox_id);
3326
3327 cmd->dif_err_code = DIF_ERR_APP;
3328 scsi_status = SAM_STAT_CHECK_CONDITION;
3329 sense_key = ABORTED_COMMAND;
3330 asc = 0x10;
3331 ascq = 0x2;
3332 }
3333
3334 /* check ref tag */
3335 if (cmd->e_ref_tag != cmd->a_ref_tag) {
3336 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3337 "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] ",
3338 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3339 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3340 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3341 cmd->atio.u.isp24.fcp_hdr.ox_id);
3342
3343 cmd->dif_err_code = DIF_ERR_REF;
3344 scsi_status = SAM_STAT_CHECK_CONDITION;
3345 sense_key = ABORTED_COMMAND;
3346 asc = 0x10;
3347 ascq = 0x3;
3348 goto out;
3349 }
3350
3351 /* check guard */
3352 if (cmd->e_guard != cmd->a_guard) {
3353 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3354 "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]",
3355 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3356 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3357 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3358 cmd->atio.u.isp24.fcp_hdr.ox_id);
3359
3360 cmd->dif_err_code = DIF_ERR_GRD;
3361 scsi_status = SAM_STAT_CHECK_CONDITION;
3362 sense_key = ABORTED_COMMAND;
3363 asc = 0x10;
3364 ascq = 0x1;
3365 }
3366 out:
3367 switch (cmd->state) {
3368 case QLA_TGT_STATE_NEED_DATA:
3369 /* handle_data will load DIF error code */
3370 cmd->state = QLA_TGT_STATE_DATA_IN;
3371 vha->hw->tgt.tgt_ops->handle_data(cmd);
3372 break;
3373 default:
3374 spin_lock_irqsave(&cmd->cmd_lock, flags);
3375 if (cmd->aborted) {
3376 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3377 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3378 break;
3379 }
3380 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3381
3382 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3383 ascq);
3384 /* assume scsi status gets out on the wire.
3385 * Will not wait for completion.
3386 */
3387 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3388 break;
3389 }
3390 }
3391
3392 /* If hardware_lock held on entry, might drop it, then reaquire */
3393 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3394 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3395 struct imm_ntfy_from_isp *ntfy)
3396 {
3397 struct nack_to_isp *nack;
3398 struct qla_hw_data *ha = vha->hw;
3399 request_t *pkt;
3400 int ret = 0;
3401
3402 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3403 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3404
3405 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3406 if (pkt == NULL) {
3407 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3408 "qla_target(%d): %s failed: unable to allocate "
3409 "request packet\n", vha->vp_idx, __func__);
3410 return -ENOMEM;
3411 }
3412
3413 pkt->entry_type = NOTIFY_ACK_TYPE;
3414 pkt->entry_count = 1;
3415 pkt->handle = QLA_TGT_SKIP_HANDLE;
3416
3417 nack = (struct nack_to_isp *)pkt;
3418 nack->ox_id = ntfy->ox_id;
3419
3420 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3421 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3422 nack->u.isp24.flags = ntfy->u.isp24.flags &
3423 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3424 }
3425
3426 /* terminate */
3427 nack->u.isp24.flags |=
3428 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3429
3430 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3431 nack->u.isp24.status = ntfy->u.isp24.status;
3432 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3433 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3434 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3435 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3436 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3437 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3438
3439 qla2x00_start_iocbs(vha, vha->req);
3440 return ret;
3441 }
3442
3443 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3444 struct imm_ntfy_from_isp *imm, int ha_locked)
3445 {
3446 unsigned long flags = 0;
3447 int rc;
3448
3449 if (ha_locked) {
3450 rc = __qlt_send_term_imm_notif(vha, imm);
3451
3452 #if 0 /* Todo */
3453 if (rc == -ENOMEM)
3454 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3455 #else
3456 if (rc) {
3457 }
3458 #endif
3459 goto done;
3460 }
3461
3462 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3463 rc = __qlt_send_term_imm_notif(vha, imm);
3464
3465 #if 0 /* Todo */
3466 if (rc == -ENOMEM)
3467 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3468 #endif
3469
3470 done:
3471 if (!ha_locked)
3472 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3473 }
3474
3475 /*
3476 * If hardware_lock held on entry, might drop it, then reaquire
3477 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3478 */
3479 static int __qlt_send_term_exchange(struct qla_qpair *qpair,
3480 struct qla_tgt_cmd *cmd,
3481 struct atio_from_isp *atio)
3482 {
3483 struct scsi_qla_host *vha = qpair->vha;
3484 struct ctio7_to_24xx *ctio24;
3485 struct qla_hw_data *ha = vha->hw;
3486 request_t *pkt;
3487 int ret = 0;
3488 uint16_t temp;
3489
3490 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3491
3492 if (cmd)
3493 vha = cmd->vha;
3494
3495 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
3496 if (pkt == NULL) {
3497 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3498 "qla_target(%d): %s failed: unable to allocate "
3499 "request packet\n", vha->vp_idx, __func__);
3500 return -ENOMEM;
3501 }
3502
3503 if (cmd != NULL) {
3504 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3505 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3506 "qla_target(%d): Terminating cmd %p with "
3507 "incorrect state %d\n", vha->vp_idx, cmd,
3508 cmd->state);
3509 } else
3510 ret = 1;
3511 }
3512
3513 qpair->tgt_counters.num_term_xchg_sent++;
3514 pkt->entry_count = 1;
3515 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3516
3517 ctio24 = (struct ctio7_to_24xx *)pkt;
3518 ctio24->entry_type = CTIO_TYPE7;
3519 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
3520 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3521 ctio24->vp_index = vha->vp_idx;
3522 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3523 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3524 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3525 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3526 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3527 CTIO7_FLAGS_TERMINATE;
3528 ctio24->u.status1.flags = cpu_to_le16(temp);
3529 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3530 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3531
3532 /* Most likely, it isn't needed */
3533 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3534 &atio->u.isp24.fcp_cmnd.add_cdb[
3535 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3536 if (ctio24->u.status1.residual != 0)
3537 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3538
3539 /* Memory Barrier */
3540 wmb();
3541 if (qpair->reqq_start_iocbs)
3542 qpair->reqq_start_iocbs(qpair);
3543 else
3544 qla2x00_start_iocbs(vha, qpair->req);
3545 return ret;
3546 }
3547
3548 static void qlt_send_term_exchange(struct qla_qpair *qpair,
3549 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3550 int ul_abort)
3551 {
3552 struct scsi_qla_host *vha;
3553 unsigned long flags = 0;
3554 int rc;
3555
3556 /* why use different vha? NPIV */
3557 if (cmd)
3558 vha = cmd->vha;
3559 else
3560 vha = qpair->vha;
3561
3562 if (ha_locked) {
3563 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3564 if (rc == -ENOMEM)
3565 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3566 goto done;
3567 }
3568 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3569 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3570 if (rc == -ENOMEM)
3571 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3572
3573 done:
3574 if (cmd && !ul_abort && !cmd->aborted) {
3575 if (cmd->sg_mapped)
3576 qlt_unmap_sg(vha, cmd);
3577 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3578 }
3579
3580 if (!ha_locked)
3581 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3582
3583 return;
3584 }
3585
3586 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3587 {
3588 struct list_head free_list;
3589 struct qla_tgt_cmd *cmd, *tcmd;
3590
3591 vha->hw->tgt.leak_exchg_thresh_hold =
3592 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3593
3594 cmd = tcmd = NULL;
3595 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3596 INIT_LIST_HEAD(&free_list);
3597 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3598
3599 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3600 list_del(&cmd->cmd_list);
3601 /* This cmd was never sent to TCM. There is no need
3602 * to schedule free or call free_cmd
3603 */
3604 qlt_free_cmd(cmd);
3605 vha->hw->tgt.num_qfull_cmds_alloc--;
3606 }
3607 }
3608 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3609 }
3610
3611 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3612 {
3613 uint32_t total_leaked;
3614
3615 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3616
3617 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3618 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3619
3620 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3621 "Chip reset due to exchange starvation: %d/%d.\n",
3622 total_leaked, vha->hw->cur_fw_xcb_count);
3623
3624 if (IS_P3P_TYPE(vha->hw))
3625 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3626 else
3627 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3628 qla2xxx_wake_dpc(vha);
3629 }
3630
3631 }
3632
3633 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3634 {
3635 struct qla_tgt *tgt = cmd->tgt;
3636 struct scsi_qla_host *vha = tgt->vha;
3637 struct se_cmd *se_cmd = &cmd->se_cmd;
3638 unsigned long flags;
3639
3640 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3641 "qla_target(%d): terminating exchange for aborted cmd=%p "
3642 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3643 se_cmd->tag);
3644
3645 spin_lock_irqsave(&cmd->cmd_lock, flags);
3646 if (cmd->aborted) {
3647 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3648 /*
3649 * It's normal to see 2 calls in this path:
3650 * 1) XFER Rdy completion + CMD_T_ABORT
3651 * 2) TCM TMR - drain_state_list
3652 */
3653 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3654 "multiple abort. %p transport_state %x, t_state %x, "
3655 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3656 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
3657 return EIO;
3658 }
3659 cmd->aborted = 1;
3660 cmd->trc_flags |= TRC_ABORT;
3661 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3662
3663 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
3664 return 0;
3665 }
3666 EXPORT_SYMBOL(qlt_abort_cmd);
3667
3668 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3669 {
3670 struct fc_port *sess = cmd->sess;
3671
3672 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3673 "%s: se_cmd[%p] ox_id %04x\n",
3674 __func__, &cmd->se_cmd,
3675 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3676
3677 BUG_ON(cmd->cmd_in_wq);
3678
3679 if (cmd->sg_mapped)
3680 qlt_unmap_sg(cmd->vha, cmd);
3681
3682 if (!cmd->q_full)
3683 qlt_decr_num_pend_cmds(cmd->vha);
3684
3685 BUG_ON(cmd->sg_mapped);
3686 cmd->jiffies_at_free = get_jiffies_64();
3687 if (unlikely(cmd->free_sg))
3688 kfree(cmd->sg);
3689
3690 if (!sess || !sess->se_sess) {
3691 WARN_ON(1);
3692 return;
3693 }
3694 cmd->jiffies_at_free = get_jiffies_64();
3695 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3696 }
3697 EXPORT_SYMBOL(qlt_free_cmd);
3698
3699 /*
3700 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3701 */
3702 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
3703 struct qla_tgt_cmd *cmd, uint32_t status)
3704 {
3705 int term = 0;
3706 struct scsi_qla_host *vha = qpair->vha;
3707
3708 if (cmd->se_cmd.prot_op)
3709 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
3710 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3711 "se_cmd=%p tag[%x] op %#x/%s",
3712 cmd->lba, cmd->lba,
3713 cmd->num_blks, &cmd->se_cmd,
3714 cmd->atio.u.isp24.exchange_addr,
3715 cmd->se_cmd.prot_op,
3716 prot_op_str(cmd->se_cmd.prot_op));
3717
3718 if (ctio != NULL) {
3719 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3720 term = !(c->flags &
3721 cpu_to_le16(OF_TERM_EXCH));
3722 } else
3723 term = 1;
3724
3725 if (term)
3726 qlt_term_ctio_exchange(qpair, ctio, cmd, status);
3727
3728 return term;
3729 }
3730
3731
3732 /* ha->hardware_lock supposed to be held on entry */
3733 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3734 struct rsp_que *rsp, uint32_t handle, void *ctio)
3735 {
3736 struct qla_tgt_cmd *cmd = NULL;
3737 struct req_que *req;
3738 int qid = GET_QID(handle);
3739 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
3740
3741 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3742 return NULL;
3743
3744 if (qid == rsp->req->id) {
3745 req = rsp->req;
3746 } else if (vha->hw->req_q_map[qid]) {
3747 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3748 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3749 vha->vp_idx, rsp->id, handle);
3750 req = vha->hw->req_q_map[qid];
3751 } else {
3752 return NULL;
3753 }
3754
3755 h &= QLA_CMD_HANDLE_MASK;
3756
3757 if (h != QLA_TGT_NULL_HANDLE) {
3758 if (unlikely(h >= req->num_outstanding_cmds)) {
3759 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3760 "qla_target(%d): Wrong handle %x received\n",
3761 vha->vp_idx, handle);
3762 return NULL;
3763 }
3764
3765 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
3766 if (unlikely(cmd == NULL)) {
3767 ql_dbg(ql_dbg_async, vha, 0xe053,
3768 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3769 vha->vp_idx, handle, req->id, rsp->id);
3770 return NULL;
3771 }
3772 req->outstanding_cmds[h] = NULL;
3773 } else if (ctio != NULL) {
3774 /* We can't get loop ID from CTIO7 */
3775 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3776 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3777 "support NULL handles\n", vha->vp_idx);
3778 return NULL;
3779 }
3780
3781 return cmd;
3782 }
3783
3784 /* hardware_lock should be held by caller. */
3785 void
3786 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3787 {
3788 struct qla_hw_data *ha = vha->hw;
3789
3790 if (cmd->sg_mapped)
3791 qlt_unmap_sg(vha, cmd);
3792
3793 /* TODO: fix debug message type and ids. */
3794 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3795 ql_dbg(ql_dbg_io, vha, 0xff00,
3796 "HOST-ABORT: state=PROCESSED.\n");
3797 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3798 cmd->write_data_transferred = 0;
3799 cmd->state = QLA_TGT_STATE_DATA_IN;
3800
3801 ql_dbg(ql_dbg_io, vha, 0xff01,
3802 "HOST-ABORT: state=DATA_IN.\n");
3803
3804 ha->tgt.tgt_ops->handle_data(cmd);
3805 return;
3806 } else {
3807 ql_dbg(ql_dbg_io, vha, 0xff03,
3808 "HOST-ABORT: state=BAD(%d).\n",
3809 cmd->state);
3810 dump_stack();
3811 }
3812
3813 cmd->trc_flags |= TRC_FLUSH;
3814 ha->tgt.tgt_ops->free_cmd(cmd);
3815 }
3816
3817 /*
3818 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3819 */
3820 static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3821 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
3822 {
3823 struct qla_hw_data *ha = vha->hw;
3824 struct se_cmd *se_cmd;
3825 struct qla_tgt_cmd *cmd;
3826 struct qla_qpair *qpair = rsp->qpair;
3827
3828 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3829 /* That could happen only in case of an error/reset/abort */
3830 if (status != CTIO_SUCCESS) {
3831 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3832 "Intermediate CTIO received"
3833 " (status %x)\n", status);
3834 }
3835 return;
3836 }
3837
3838 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
3839 if (cmd == NULL)
3840 return;
3841
3842 se_cmd = &cmd->se_cmd;
3843 cmd->cmd_sent_to_fw = 0;
3844
3845 qlt_unmap_sg(vha, cmd);
3846
3847 if (unlikely(status != CTIO_SUCCESS)) {
3848 switch (status & 0xFFFF) {
3849 case CTIO_LIP_RESET:
3850 case CTIO_TARGET_RESET:
3851 case CTIO_ABORTED:
3852 /* driver request abort via Terminate exchange */
3853 case CTIO_TIMEOUT:
3854 case CTIO_INVALID_RX_ID:
3855 /* They are OK */
3856 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3857 "qla_target(%d): CTIO with "
3858 "status %#x received, state %x, se_cmd %p, "
3859 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3860 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3861 status, cmd->state, se_cmd);
3862 break;
3863
3864 case CTIO_PORT_LOGGED_OUT:
3865 case CTIO_PORT_UNAVAILABLE:
3866 {
3867 int logged_out =
3868 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3869
3870 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3871 "qla_target(%d): CTIO with %s status %x "
3872 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3873 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
3874 status, cmd->state, se_cmd);
3875
3876 if (logged_out && cmd->sess) {
3877 /*
3878 * Session is already logged out, but we need
3879 * to notify initiator, who's not aware of this
3880 */
3881 cmd->sess->logout_on_delete = 0;
3882 cmd->sess->send_els_logo = 1;
3883 ql_dbg(ql_dbg_disc, vha, 0x20f8,
3884 "%s %d %8phC post del sess\n",
3885 __func__, __LINE__, cmd->sess->port_name);
3886
3887 qlt_schedule_sess_for_deletion_lock(cmd->sess);
3888 }
3889 break;
3890 }
3891 case CTIO_DIF_ERROR: {
3892 struct ctio_crc_from_fw *crc =
3893 (struct ctio_crc_from_fw *)ctio;
3894 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3895 "qla_target(%d): CTIO with DIF_ERROR status %x "
3896 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3897 "expect_dif[0x%llx]\n",
3898 vha->vp_idx, status, cmd->state, se_cmd,
3899 *((u64 *)&crc->actual_dif[0]),
3900 *((u64 *)&crc->expected_dif[0]));
3901
3902 qlt_handle_dif_error(qpair, cmd, ctio);
3903 return;
3904 }
3905 default:
3906 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
3907 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
3908 vha->vp_idx, status, cmd->state, se_cmd);
3909 break;
3910 }
3911
3912
3913 /* "cmd->aborted" means
3914 * cmd is already aborted/terminated, we don't
3915 * need to terminate again. The exchange is already
3916 * cleaned up/freed at FW level. Just cleanup at driver
3917 * level.
3918 */
3919 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3920 (!cmd->aborted)) {
3921 cmd->trc_flags |= TRC_CTIO_ERR;
3922 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
3923 return;
3924 }
3925 }
3926
3927 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3928 cmd->trc_flags |= TRC_CTIO_DONE;
3929 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3930 cmd->state = QLA_TGT_STATE_DATA_IN;
3931
3932 if (status == CTIO_SUCCESS)
3933 cmd->write_data_transferred = 1;
3934
3935 ha->tgt.tgt_ops->handle_data(cmd);
3936 return;
3937 } else if (cmd->aborted) {
3938 cmd->trc_flags |= TRC_CTIO_ABORTED;
3939 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3940 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
3941 } else {
3942 cmd->trc_flags |= TRC_CTIO_STRANGE;
3943 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3944 "qla_target(%d): A command in state (%d) should "
3945 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3946 }
3947
3948 if (unlikely(status != CTIO_SUCCESS) &&
3949 !cmd->aborted) {
3950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3951 dump_stack();
3952 }
3953
3954 ha->tgt.tgt_ops->free_cmd(cmd);
3955 }
3956
3957 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3958 uint8_t task_codes)
3959 {
3960 int fcp_task_attr;
3961
3962 switch (task_codes) {
3963 case ATIO_SIMPLE_QUEUE:
3964 fcp_task_attr = TCM_SIMPLE_TAG;
3965 break;
3966 case ATIO_HEAD_OF_QUEUE:
3967 fcp_task_attr = TCM_HEAD_TAG;
3968 break;
3969 case ATIO_ORDERED_QUEUE:
3970 fcp_task_attr = TCM_ORDERED_TAG;
3971 break;
3972 case ATIO_ACA_QUEUE:
3973 fcp_task_attr = TCM_ACA_TAG;
3974 break;
3975 case ATIO_UNTAGGED:
3976 fcp_task_attr = TCM_SIMPLE_TAG;
3977 break;
3978 default:
3979 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3980 "qla_target: unknown task code %x, use ORDERED instead\n",
3981 task_codes);
3982 fcp_task_attr = TCM_ORDERED_TAG;
3983 break;
3984 }
3985
3986 return fcp_task_attr;
3987 }
3988
3989 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
3990 uint8_t *);
3991 /*
3992 * Process context for I/O path into tcm_qla2xxx code
3993 */
3994 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
3995 {
3996 scsi_qla_host_t *vha = cmd->vha;
3997 struct qla_hw_data *ha = vha->hw;
3998 struct fc_port *sess = cmd->sess;
3999 struct atio_from_isp *atio = &cmd->atio;
4000 unsigned char *cdb;
4001 unsigned long flags;
4002 uint32_t data_length;
4003 int ret, fcp_task_attr, data_dir, bidi = 0;
4004 struct qla_qpair *qpair = cmd->qpair;
4005
4006 cmd->cmd_in_wq = 0;
4007 cmd->trc_flags |= TRC_DO_WORK;
4008
4009 if (cmd->aborted) {
4010 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4011 "cmd with tag %u is aborted\n",
4012 cmd->atio.u.isp24.exchange_addr);
4013 goto out_term;
4014 }
4015
4016 spin_lock_init(&cmd->cmd_lock);
4017 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
4018 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
4019
4020 if (atio->u.isp24.fcp_cmnd.rddata &&
4021 atio->u.isp24.fcp_cmnd.wrdata) {
4022 bidi = 1;
4023 data_dir = DMA_TO_DEVICE;
4024 } else if (atio->u.isp24.fcp_cmnd.rddata)
4025 data_dir = DMA_FROM_DEVICE;
4026 else if (atio->u.isp24.fcp_cmnd.wrdata)
4027 data_dir = DMA_TO_DEVICE;
4028 else
4029 data_dir = DMA_NONE;
4030
4031 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4032 atio->u.isp24.fcp_cmnd.task_attr);
4033 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4034 &atio->u.isp24.fcp_cmnd.add_cdb[
4035 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4036
4037 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4038 fcp_task_attr, data_dir, bidi);
4039 if (ret != 0)
4040 goto out_term;
4041 /*
4042 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4043 */
4044 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4045 ha->tgt.tgt_ops->put_sess(sess);
4046 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4047 return;
4048
4049 out_term:
4050 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
4051 /*
4052 * cmd has not sent to target yet, so pass NULL as the second
4053 * argument to qlt_send_term_exchange() and free the memory here.
4054 */
4055 cmd->trc_flags |= TRC_DO_WORK_ERR;
4056 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4057 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
4058
4059 qlt_decr_num_pend_cmds(vha);
4060 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
4061 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4062
4063 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4064 ha->tgt.tgt_ops->put_sess(sess);
4065 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4066 }
4067
4068 static void qlt_do_work(struct work_struct *work)
4069 {
4070 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
4071 scsi_qla_host_t *vha = cmd->vha;
4072 unsigned long flags;
4073
4074 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4075 list_del(&cmd->cmd_list);
4076 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4077
4078 __qlt_do_work(cmd);
4079 }
4080
4081 void qlt_clr_qp_table(struct scsi_qla_host *vha)
4082 {
4083 unsigned long flags;
4084 struct qla_hw_data *ha = vha->hw;
4085 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4086 void *node;
4087 u64 key = 0;
4088
4089 ql_log(ql_log_info, vha, 0x706c,
4090 "User update Number of Active Qpairs %d\n",
4091 ha->tgt.num_act_qpairs);
4092
4093 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4094
4095 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4096 btree_remove64(&tgt->lun_qpair_map, key);
4097
4098 ha->base_qpair->lun_cnt = 0;
4099 for (key = 0; key < ha->max_qpairs; key++)
4100 if (ha->queue_pair_map[key])
4101 ha->queue_pair_map[key]->lun_cnt = 0;
4102
4103 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4104 }
4105
4106 static void qlt_assign_qpair(struct scsi_qla_host *vha,
4107 struct qla_tgt_cmd *cmd)
4108 {
4109 struct qla_qpair *qpair, *qp;
4110 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4111 struct qla_qpair_hint *h;
4112
4113 if (vha->flags.qpairs_available) {
4114 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4115 if (unlikely(!h)) {
4116 /* spread lun to qpair ratio evently */
4117 int lcnt = 0, rc;
4118 struct scsi_qla_host *base_vha =
4119 pci_get_drvdata(vha->hw->pdev);
4120
4121 qpair = vha->hw->base_qpair;
4122 if (qpair->lun_cnt == 0) {
4123 qpair->lun_cnt++;
4124 h = qla_qpair_to_hint(tgt, qpair);
4125 BUG_ON(!h);
4126 rc = btree_insert64(&tgt->lun_qpair_map,
4127 cmd->unpacked_lun, h, GFP_ATOMIC);
4128 if (rc) {
4129 qpair->lun_cnt--;
4130 ql_log(ql_log_info, vha, 0xd037,
4131 "Unable to insert lun %llx into lun_qpair_map\n",
4132 cmd->unpacked_lun);
4133 }
4134 goto out;
4135 } else {
4136 lcnt = qpair->lun_cnt;
4137 }
4138
4139 h = NULL;
4140 list_for_each_entry(qp, &base_vha->qp_list,
4141 qp_list_elem) {
4142 if (qp->lun_cnt == 0) {
4143 qp->lun_cnt++;
4144 h = qla_qpair_to_hint(tgt, qp);
4145 BUG_ON(!h);
4146 rc = btree_insert64(&tgt->lun_qpair_map,
4147 cmd->unpacked_lun, h, GFP_ATOMIC);
4148 if (rc) {
4149 qp->lun_cnt--;
4150 ql_log(ql_log_info, vha, 0xd038,
4151 "Unable to insert lun %llx into lun_qpair_map\n",
4152 cmd->unpacked_lun);
4153 }
4154 qpair = qp;
4155 goto out;
4156 } else {
4157 if (qp->lun_cnt < lcnt) {
4158 lcnt = qp->lun_cnt;
4159 qpair = qp;
4160 continue;
4161 }
4162 }
4163 }
4164 BUG_ON(!qpair);
4165 qpair->lun_cnt++;
4166 h = qla_qpair_to_hint(tgt, qpair);
4167 BUG_ON(!h);
4168 rc = btree_insert64(&tgt->lun_qpair_map,
4169 cmd->unpacked_lun, h, GFP_ATOMIC);
4170 if (rc) {
4171 qpair->lun_cnt--;
4172 ql_log(ql_log_info, vha, 0xd039,
4173 "Unable to insert lun %llx into lun_qpair_map\n",
4174 cmd->unpacked_lun);
4175 }
4176 }
4177 } else {
4178 h = &tgt->qphints[0];
4179 }
4180 out:
4181 cmd->qpair = h->qpair;
4182 cmd->se_cmd.cpuid = h->cpuid;
4183 }
4184
4185 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
4186 struct fc_port *sess,
4187 struct atio_from_isp *atio)
4188 {
4189 struct se_session *se_sess = sess->se_sess;
4190 struct qla_tgt_cmd *cmd;
4191 int tag;
4192
4193 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4194 if (tag < 0)
4195 return NULL;
4196
4197 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4198 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4199 cmd->cmd_type = TYPE_TGT_CMD;
4200 memcpy(&cmd->atio, atio, sizeof(*atio));
4201 cmd->state = QLA_TGT_STATE_NEW;
4202 cmd->tgt = vha->vha_tgt.qla_tgt;
4203 qlt_incr_num_pend_cmds(vha);
4204 cmd->vha = vha;
4205 cmd->se_cmd.map_tag = tag;
4206 cmd->sess = sess;
4207 cmd->loop_id = sess->loop_id;
4208 cmd->conf_compl_supported = sess->conf_compl_supported;
4209
4210 cmd->trc_flags = 0;
4211 cmd->jiffies_at_alloc = get_jiffies_64();
4212
4213 cmd->unpacked_lun = scsilun_to_int(
4214 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4215 qlt_assign_qpair(vha, cmd);
4216 cmd->reset_count = vha->hw->base_qpair->chip_reset;
4217 cmd->vp_idx = vha->vp_idx;
4218
4219 return cmd;
4220 }
4221
4222 static void qlt_create_sess_from_atio(struct work_struct *work)
4223 {
4224 struct qla_tgt_sess_op *op = container_of(work,
4225 struct qla_tgt_sess_op, work);
4226 scsi_qla_host_t *vha = op->vha;
4227 struct qla_hw_data *ha = vha->hw;
4228 struct fc_port *sess;
4229 struct qla_tgt_cmd *cmd;
4230 unsigned long flags;
4231 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
4232
4233 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4234 list_del(&op->cmd_list);
4235 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4236
4237 if (op->aborted) {
4238 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
4239 "sess_op with tag %u is aborted\n",
4240 op->atio.u.isp24.exchange_addr);
4241 goto out_term;
4242 }
4243
4244 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
4245 "qla_target(%d): Unable to find wwn login"
4246 " (s_id %x:%x:%x), trying to create it manually\n",
4247 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
4248
4249 if (op->atio.u.raw.entry_count > 1) {
4250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
4251 "Dropping multy entry atio %p\n", &op->atio);
4252 goto out_term;
4253 }
4254
4255 sess = qlt_make_local_sess(vha, s_id);
4256 /* sess has an extra creation ref. */
4257
4258 if (!sess)
4259 goto out_term;
4260 /*
4261 * Now obtain a pre-allocated session tag using the original op->atio
4262 * packet header, and dispatch into __qlt_do_work() using the existing
4263 * process context.
4264 */
4265 cmd = qlt_get_tag(vha, sess, &op->atio);
4266 if (!cmd) {
4267 struct qla_qpair *qpair = ha->base_qpair;
4268
4269 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4270 qlt_send_busy(qpair, &op->atio, SAM_STAT_BUSY);
4271 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4272
4273 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4274 ha->tgt.tgt_ops->put_sess(sess);
4275 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4276 kfree(op);
4277 return;
4278 }
4279
4280 /*
4281 * __qlt_do_work() will call qlt_put_sess() to release
4282 * the extra reference taken above by qlt_make_local_sess()
4283 */
4284 __qlt_do_work(cmd);
4285 kfree(op);
4286 return;
4287 out_term:
4288 qlt_send_term_exchange(vha->hw->base_qpair, NULL, &op->atio, 0, 0);
4289 kfree(op);
4290 }
4291
4292 /* ha->hardware_lock supposed to be held on entry */
4293 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4294 struct atio_from_isp *atio)
4295 {
4296 struct qla_hw_data *ha = vha->hw;
4297 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4298 struct fc_port *sess;
4299 struct qla_tgt_cmd *cmd;
4300 unsigned long flags;
4301
4302 if (unlikely(tgt->tgt_stop)) {
4303 ql_dbg(ql_dbg_io, vha, 0x3061,
4304 "New command while device %p is shutting down\n", tgt);
4305 return -EFAULT;
4306 }
4307
4308 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4309 if (unlikely(!sess)) {
4310 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
4311 GFP_ATOMIC);
4312 if (!op)
4313 return -ENOMEM;
4314
4315 memcpy(&op->atio, atio, sizeof(*atio));
4316 op->vha = vha;
4317
4318 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4319 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
4320 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4321
4322 INIT_WORK(&op->work, qlt_create_sess_from_atio);
4323 queue_work(qla_tgt_wq, &op->work);
4324 return 0;
4325 }
4326
4327 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4328 * session deletion, but it's still in sess_del_work wq */
4329 if (sess->deleted) {
4330 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
4331 "New command while old session %p is being deleted\n",
4332 sess);
4333 return -EFAULT;
4334 }
4335
4336 /*
4337 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4338 */
4339 if (!kref_get_unless_zero(&sess->sess_kref)) {
4340 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
4341 "%s: kref_get fail, %8phC oxid %x \n",
4342 __func__, sess->port_name,
4343 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4344 return -EFAULT;
4345 }
4346
4347 cmd = qlt_get_tag(vha, sess, atio);
4348 if (!cmd) {
4349 ql_dbg(ql_dbg_io, vha, 0x3062,
4350 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4351 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4352 ha->tgt.tgt_ops->put_sess(sess);
4353 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4354 return -ENOMEM;
4355 }
4356
4357 cmd->cmd_in_wq = 1;
4358 cmd->trc_flags |= TRC_NEW_CMD;
4359
4360 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4361 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4362 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4363
4364 INIT_WORK(&cmd->work, qlt_do_work);
4365 if (vha->flags.qpairs_available) {
4366 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4367 } else if (ha->msix_count) {
4368 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4369 queue_work_on(smp_processor_id(), qla_tgt_wq,
4370 &cmd->work);
4371 else
4372 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4373 &cmd->work);
4374 } else {
4375 queue_work(qla_tgt_wq, &cmd->work);
4376 }
4377
4378 return 0;
4379 }
4380
4381 /* ha->hardware_lock supposed to be held on entry */
4382 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
4383 int fn, void *iocb, int flags)
4384 {
4385 struct scsi_qla_host *vha = sess->vha;
4386 struct qla_hw_data *ha = vha->hw;
4387 struct qla_tgt_mgmt_cmd *mcmd;
4388 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4389 int res;
4390
4391 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4392 if (!mcmd) {
4393 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4394 "qla_target(%d): Allocation of management "
4395 "command failed, some commands and their data could "
4396 "leak\n", vha->vp_idx);
4397 return -ENOMEM;
4398 }
4399 memset(mcmd, 0, sizeof(*mcmd));
4400 mcmd->sess = sess;
4401
4402 if (iocb) {
4403 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4404 sizeof(mcmd->orig_iocb.imm_ntfy));
4405 }
4406 mcmd->tmr_func = fn;
4407 mcmd->flags = flags;
4408 mcmd->reset_count = ha->base_qpair->chip_reset;
4409 mcmd->qpair = ha->base_qpair;
4410 mcmd->vha = vha;
4411
4412 switch (fn) {
4413 case QLA_TGT_LUN_RESET:
4414 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4415 break;
4416 }
4417
4418 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
4419 if (res != 0) {
4420 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4421 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4422 sess->vha->vp_idx, res);
4423 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4424 return -EFAULT;
4425 }
4426
4427 return 0;
4428 }
4429
4430 /* ha->hardware_lock supposed to be held on entry */
4431 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4432 {
4433 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4434 struct qla_hw_data *ha = vha->hw;
4435 struct qla_tgt *tgt;
4436 struct fc_port *sess;
4437 u64 unpacked_lun;
4438 int fn;
4439 unsigned long flags;
4440
4441 tgt = vha->vha_tgt.qla_tgt;
4442
4443 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4444
4445 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4446 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4447 a->u.isp24.fcp_hdr.s_id);
4448 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4449
4450 unpacked_lun =
4451 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4452
4453 if (!sess) {
4454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4455 "qla_target(%d): task mgmt fn 0x%x for "
4456 "non-existant session\n", vha->vp_idx, fn);
4457 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4458 sizeof(struct atio_from_isp));
4459 }
4460
4461 if (sess->deleted)
4462 return -EFAULT;
4463
4464 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4465 }
4466
4467 /* ha->hardware_lock supposed to be held on entry */
4468 static int __qlt_abort_task(struct scsi_qla_host *vha,
4469 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
4470 {
4471 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4472 struct qla_hw_data *ha = vha->hw;
4473 struct qla_tgt_mgmt_cmd *mcmd;
4474 u64 unpacked_lun;
4475 int rc;
4476
4477 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4478 if (mcmd == NULL) {
4479 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4480 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4481 vha->vp_idx, __func__);
4482 return -ENOMEM;
4483 }
4484 memset(mcmd, 0, sizeof(*mcmd));
4485
4486 mcmd->sess = sess;
4487 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4488 sizeof(mcmd->orig_iocb.imm_ntfy));
4489
4490 unpacked_lun =
4491 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4492 mcmd->reset_count = ha->base_qpair->chip_reset;
4493 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
4494 mcmd->qpair = ha->base_qpair;
4495
4496 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
4497 le16_to_cpu(iocb->u.isp2x.seq_id));
4498 if (rc != 0) {
4499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4500 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4501 vha->vp_idx, rc);
4502 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4503 return -EFAULT;
4504 }
4505
4506 return 0;
4507 }
4508
4509 /* ha->hardware_lock supposed to be held on entry */
4510 static int qlt_abort_task(struct scsi_qla_host *vha,
4511 struct imm_ntfy_from_isp *iocb)
4512 {
4513 struct qla_hw_data *ha = vha->hw;
4514 struct fc_port *sess;
4515 int loop_id;
4516 unsigned long flags;
4517
4518 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4519
4520 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4521 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4522 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4523
4524 if (sess == NULL) {
4525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4526 "qla_target(%d): task abort for unexisting "
4527 "session\n", vha->vp_idx);
4528 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4529 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4530 }
4531
4532 return __qlt_abort_task(vha, iocb, sess);
4533 }
4534
4535 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4536 {
4537 if (rc != MBS_COMMAND_COMPLETE) {
4538 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4539 "%s: se_sess %p / sess %p from"
4540 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4541 " LOGO failed: %#x\n",
4542 __func__,
4543 fcport->se_sess,
4544 fcport,
4545 fcport->port_name, fcport->loop_id,
4546 fcport->d_id.b.domain, fcport->d_id.b.area,
4547 fcport->d_id.b.al_pa, rc);
4548 }
4549
4550 fcport->logout_completed = 1;
4551 }
4552
4553 /*
4554 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4555 *
4556 * Schedules sessions with matching port_id/loop_id but different wwn for
4557 * deletion. Returns existing session with matching wwn if present.
4558 * Null otherwise.
4559 */
4560 struct fc_port *
4561 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
4562 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
4563 {
4564 struct fc_port *sess = NULL, *other_sess;
4565 uint64_t other_wwn;
4566
4567 *conflict_sess = NULL;
4568
4569 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
4570
4571 other_wwn = wwn_to_u64(other_sess->port_name);
4572
4573 if (wwn == other_wwn) {
4574 WARN_ON(sess);
4575 sess = other_sess;
4576 continue;
4577 }
4578
4579 /* find other sess with nport_id collision */
4580 if (port_id.b24 == other_sess->d_id.b24) {
4581 if (loop_id != other_sess->loop_id) {
4582 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
4583 "Invalidating sess %p loop_id %d wwn %llx.\n",
4584 other_sess, other_sess->loop_id, other_wwn);
4585
4586 /*
4587 * logout_on_delete is set by default, but another
4588 * session that has the same s_id/loop_id combo
4589 * might have cleared it when requested this session
4590 * deletion, so don't touch it
4591 */
4592 qlt_schedule_sess_for_deletion(other_sess, true);
4593 } else {
4594 /*
4595 * Another wwn used to have our s_id/loop_id
4596 * kill the session, but don't free the loop_id
4597 */
4598 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
4599 "Invalidating sess %p loop_id %d wwn %llx.\n",
4600 other_sess, other_sess->loop_id, other_wwn);
4601
4602
4603 other_sess->keep_nport_handle = 1;
4604 *conflict_sess = other_sess;
4605 qlt_schedule_sess_for_deletion(other_sess,
4606 true);
4607 }
4608 continue;
4609 }
4610
4611 /* find other sess with nport handle collision */
4612 if ((loop_id == other_sess->loop_id) &&
4613 (loop_id != FC_NO_LOOP_ID)) {
4614 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
4615 "Invalidating sess %p loop_id %d wwn %llx.\n",
4616 other_sess, other_sess->loop_id, other_wwn);
4617
4618 /* Same loop_id but different s_id
4619 * Ok to kill and logout */
4620 qlt_schedule_sess_for_deletion(other_sess, true);
4621 }
4622 }
4623
4624 return sess;
4625 }
4626
4627 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4628 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4629 {
4630 struct qla_tgt_sess_op *op;
4631 struct qla_tgt_cmd *cmd;
4632 uint32_t key;
4633 int count = 0;
4634 unsigned long flags;
4635
4636 key = (((u32)s_id->b.domain << 16) |
4637 ((u32)s_id->b.area << 8) |
4638 ((u32)s_id->b.al_pa));
4639
4640 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4641 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4642 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4643
4644 if (op_key == key) {
4645 op->aborted = true;
4646 count++;
4647 }
4648 }
4649
4650 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4651 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4652 if (op_key == key) {
4653 op->aborted = true;
4654 count++;
4655 }
4656 }
4657
4658 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4659 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4660 if (cmd_key == key) {
4661 cmd->aborted = 1;
4662 count++;
4663 }
4664 }
4665 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4666
4667 return count;
4668 }
4669
4670 /*
4671 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4672 */
4673 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4674 struct imm_ntfy_from_isp *iocb)
4675 {
4676 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4677 struct qla_hw_data *ha = vha->hw;
4678 struct fc_port *sess = NULL, *conflict_sess = NULL;
4679 uint64_t wwn;
4680 port_id_t port_id;
4681 uint16_t loop_id;
4682 uint16_t wd3_lo;
4683 int res = 0;
4684 struct qlt_plogi_ack_t *pla;
4685 unsigned long flags;
4686
4687 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4688
4689 port_id.b.domain = iocb->u.isp24.port_id[2];
4690 port_id.b.area = iocb->u.isp24.port_id[1];
4691 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4692 port_id.b.rsvd_1 = 0;
4693
4694 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4695
4696 ql_dbg(ql_dbg_disc, vha, 0xf026,
4697 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4698 vha->vp_idx, iocb->u.isp24.port_id[2],
4699 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4700 iocb->u.isp24.status_subcode, loop_id,
4701 iocb->u.isp24.port_name);
4702
4703 /* res = 1 means ack at the end of thread
4704 * res = 0 means ack async/later.
4705 */
4706 switch (iocb->u.isp24.status_subcode) {
4707 case ELS_PLOGI:
4708
4709 /* Mark all stale commands in qla_tgt_wq for deletion */
4710 abort_cmds_for_s_id(vha, &port_id);
4711
4712 if (wwn) {
4713 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4714 sess = qlt_find_sess_invalidate_other(vha, wwn,
4715 port_id, loop_id, &conflict_sess);
4716 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4717 }
4718
4719 if (IS_SW_RESV_ADDR(port_id)) {
4720 res = 1;
4721 break;
4722 }
4723
4724 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4725 if (!pla) {
4726 qlt_send_term_imm_notif(vha, iocb, 1);
4727 break;
4728 }
4729
4730 res = 0;
4731
4732 if (conflict_sess) {
4733 conflict_sess->login_gen++;
4734 qlt_plogi_ack_link(vha, pla, conflict_sess,
4735 QLT_PLOGI_LINK_CONFLICT);
4736 }
4737
4738 if (!sess) {
4739 pla->ref_count++;
4740 qla24xx_post_newsess_work(vha, &port_id,
4741 iocb->u.isp24.port_name, pla);
4742 res = 0;
4743 break;
4744 }
4745
4746 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4747 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4748 sess->d_id = port_id;
4749 sess->login_gen++;
4750
4751 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4752 "%s %d %8phC DS %d\n",
4753 __func__, __LINE__, sess->port_name, sess->disc_state);
4754
4755 switch (sess->disc_state) {
4756 case DSC_DELETED:
4757 qlt_plogi_ack_unref(vha, pla);
4758 break;
4759
4760 default:
4761 /*
4762 * Under normal circumstances we want to release nport handle
4763 * during LOGO process to avoid nport handle leaks inside FW.
4764 * The exception is when LOGO is done while another PLOGI with
4765 * the same nport handle is waiting as might be the case here.
4766 * Note: there is always a possibily of a race where session
4767 * deletion has already started for other reasons (e.g. ACL
4768 * removal) and now PLOGI arrives:
4769 * 1. if PLOGI arrived in FW after nport handle has been freed,
4770 * FW must have assigned this PLOGI a new/same handle and we
4771 * can proceed ACK'ing it as usual when session deletion
4772 * completes.
4773 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4774 * bit reached it, the handle has now been released. We'll
4775 * get an error when we ACK this PLOGI. Nothing will be sent
4776 * back to initiator. Initiator should eventually retry
4777 * PLOGI and situation will correct itself.
4778 */
4779 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4780 (sess->d_id.b24 == port_id.b24));
4781
4782 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4783 "%s %d %8phC post del sess\n",
4784 __func__, __LINE__, sess->port_name);
4785
4786
4787 qlt_schedule_sess_for_deletion_lock(sess);
4788 break;
4789 }
4790
4791 break;
4792
4793 case ELS_PRLI:
4794 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4795
4796 if (wwn) {
4797 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4798 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4799 loop_id, &conflict_sess);
4800 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4801 }
4802
4803 if (conflict_sess) {
4804 switch (conflict_sess->disc_state) {
4805 case DSC_DELETED:
4806 case DSC_DELETE_PEND:
4807 break;
4808 default:
4809 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4810 "PRLI with conflicting sess %p port %8phC\n",
4811 conflict_sess, conflict_sess->port_name);
4812 conflict_sess->fw_login_state =
4813 DSC_LS_PORT_UNAVAIL;
4814 qlt_send_term_imm_notif(vha, iocb, 1);
4815 res = 0;
4816 break;
4817 }
4818 }
4819
4820 if (sess != NULL) {
4821 if (sess->fw_login_state != DSC_LS_PLOGI_PEND &&
4822 sess->fw_login_state != DSC_LS_PLOGI_COMP) {
4823 /*
4824 * Impatient initiator sent PRLI before last
4825 * PLOGI could finish. Will force him to re-try,
4826 * while last one finishes.
4827 */
4828 ql_log(ql_log_warn, sess->vha, 0xf095,
4829 "sess %p PRLI received, before plogi ack.\n",
4830 sess);
4831 qlt_send_term_imm_notif(vha, iocb, 1);
4832 res = 0;
4833 break;
4834 }
4835
4836 /*
4837 * This shouldn't happen under normal circumstances,
4838 * since we have deleted the old session during PLOGI
4839 */
4840 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
4841 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4842 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4843
4844 sess->local = 0;
4845 sess->loop_id = loop_id;
4846 sess->d_id = port_id;
4847 sess->fw_login_state = DSC_LS_PRLI_PEND;
4848
4849 if (wd3_lo & BIT_7)
4850 sess->conf_compl_supported = 1;
4851
4852 if ((wd3_lo & BIT_4) == 0)
4853 sess->port_type = FCT_INITIATOR;
4854 else
4855 sess->port_type = FCT_TARGET;
4856 }
4857 res = 1; /* send notify ack */
4858
4859 /* Make session global (not used in fabric mode) */
4860 if (ha->current_topology != ISP_CFG_F) {
4861 if (sess) {
4862 ql_dbg(ql_dbg_disc, vha, 0x20fa,
4863 "%s %d %8phC post nack\n",
4864 __func__, __LINE__, sess->port_name);
4865 qla24xx_post_nack_work(vha, sess, iocb,
4866 SRB_NACK_PRLI);
4867 res = 0;
4868 } else {
4869 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4870 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4871 qla2xxx_wake_dpc(vha);
4872 }
4873 } else {
4874 if (sess) {
4875 ql_dbg(ql_dbg_disc, vha, 0x20fb,
4876 "%s %d %8phC post nack\n",
4877 __func__, __LINE__, sess->port_name);
4878 qla24xx_post_nack_work(vha, sess, iocb,
4879 SRB_NACK_PRLI);
4880 res = 0;
4881 }
4882 }
4883 break;
4884
4885 case ELS_TPRLO:
4886 if (le16_to_cpu(iocb->u.isp24.flags) &
4887 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4888 loop_id = 0xFFFF;
4889 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4890 res = 1;
4891 break;
4892 }
4893 /* drop through */
4894 case ELS_LOGO:
4895 case ELS_PRLO:
4896 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4897 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4898 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4899
4900 if (sess) {
4901 sess->login_gen++;
4902 sess->fw_login_state = DSC_LS_LOGO_PEND;
4903 sess->logo_ack_needed = 1;
4904 memcpy(sess->iocb, iocb, IOCB_SIZE);
4905 }
4906
4907 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4908
4909 ql_dbg(ql_dbg_disc, vha, 0x20fc,
4910 "%s: logo %llx res %d sess %p ",
4911 __func__, wwn, res, sess);
4912 if (res == 0) {
4913 /*
4914 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4915 * for LOGO_ACK & sess delete
4916 */
4917 BUG_ON(!sess);
4918 res = 0;
4919 } else {
4920 /* cmd did not go to upper layer. */
4921 if (sess) {
4922 qlt_schedule_sess_for_deletion_lock(sess);
4923 res = 0;
4924 }
4925 /* else logo will be ack */
4926 }
4927 break;
4928 case ELS_PDISC:
4929 case ELS_ADISC:
4930 {
4931 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4932 if (tgt->link_reinit_iocb_pending) {
4933 qlt_send_notify_ack(ha->base_qpair,
4934 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
4935 tgt->link_reinit_iocb_pending = 0;
4936 }
4937
4938 sess = qla2x00_find_fcport_by_wwpn(vha,
4939 iocb->u.isp24.port_name, 1);
4940 if (sess) {
4941 ql_dbg(ql_dbg_disc, vha, 0x20fd,
4942 "sess %p lid %d|%d DS %d LS %d\n",
4943 sess, sess->loop_id, loop_id,
4944 sess->disc_state, sess->fw_login_state);
4945 }
4946
4947 res = 1; /* send notify ack */
4948 break;
4949 }
4950
4951 case ELS_FLOGI: /* should never happen */
4952 default:
4953 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4954 "qla_target(%d): Unsupported ELS command %x "
4955 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4956 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4957 break;
4958 }
4959
4960 return res;
4961 }
4962
4963 /*
4964 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4965 */
4966 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4967 struct imm_ntfy_from_isp *iocb)
4968 {
4969 struct qla_hw_data *ha = vha->hw;
4970 uint32_t add_flags = 0;
4971 int send_notify_ack = 1;
4972 uint16_t status;
4973
4974 status = le16_to_cpu(iocb->u.isp2x.status);
4975 switch (status) {
4976 case IMM_NTFY_LIP_RESET:
4977 {
4978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4979 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4980 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4981 iocb->u.isp24.status_subcode);
4982
4983 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4984 send_notify_ack = 0;
4985 break;
4986 }
4987
4988 case IMM_NTFY_LIP_LINK_REINIT:
4989 {
4990 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4991 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4992 "qla_target(%d): LINK REINIT (loop %#x, "
4993 "subcode %x)\n", vha->vp_idx,
4994 le16_to_cpu(iocb->u.isp24.nport_handle),
4995 iocb->u.isp24.status_subcode);
4996 if (tgt->link_reinit_iocb_pending) {
4997 qlt_send_notify_ack(ha->base_qpair,
4998 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
4999 }
5000 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5001 tgt->link_reinit_iocb_pending = 1;
5002 /*
5003 * QLogic requires to wait after LINK REINIT for possible
5004 * PDISC or ADISC ELS commands
5005 */
5006 send_notify_ack = 0;
5007 break;
5008 }
5009
5010 case IMM_NTFY_PORT_LOGOUT:
5011 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5012 "qla_target(%d): Port logout (loop "
5013 "%#x, subcode %x)\n", vha->vp_idx,
5014 le16_to_cpu(iocb->u.isp24.nport_handle),
5015 iocb->u.isp24.status_subcode);
5016
5017 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5018 send_notify_ack = 0;
5019 /* The sessions will be cleared in the callback, if needed */
5020 break;
5021
5022 case IMM_NTFY_GLBL_TPRLO:
5023 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5024 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5025 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5026 send_notify_ack = 0;
5027 /* The sessions will be cleared in the callback, if needed */
5028 break;
5029
5030 case IMM_NTFY_PORT_CONFIG:
5031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5032 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5033 status);
5034 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5035 send_notify_ack = 0;
5036 /* The sessions will be cleared in the callback, if needed */
5037 break;
5038
5039 case IMM_NTFY_GLBL_LOGO:
5040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5041 "qla_target(%d): Link failure detected\n",
5042 vha->vp_idx);
5043 /* I_T nexus loss */
5044 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5045 send_notify_ack = 0;
5046 break;
5047
5048 case IMM_NTFY_IOCB_OVERFLOW:
5049 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5050 "qla_target(%d): Cannot provide requested "
5051 "capability (IOCB overflowed the immediate notify "
5052 "resource count)\n", vha->vp_idx);
5053 break;
5054
5055 case IMM_NTFY_ABORT_TASK:
5056 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5057 "qla_target(%d): Abort Task (S %08x I %#x -> "
5058 "L %#x)\n", vha->vp_idx,
5059 le16_to_cpu(iocb->u.isp2x.seq_id),
5060 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5061 le16_to_cpu(iocb->u.isp2x.lun));
5062 if (qlt_abort_task(vha, iocb) == 0)
5063 send_notify_ack = 0;
5064 break;
5065
5066 case IMM_NTFY_RESOURCE:
5067 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5068 "qla_target(%d): Out of resources, host %ld\n",
5069 vha->vp_idx, vha->host_no);
5070 break;
5071
5072 case IMM_NTFY_MSG_RX:
5073 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5074 "qla_target(%d): Immediate notify task %x\n",
5075 vha->vp_idx, iocb->u.isp2x.task_flags);
5076 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5077 send_notify_ack = 0;
5078 break;
5079
5080 case IMM_NTFY_ELS:
5081 if (qlt_24xx_handle_els(vha, iocb) == 0)
5082 send_notify_ack = 0;
5083 break;
5084 default:
5085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5086 "qla_target(%d): Received unknown immediate "
5087 "notify status %x\n", vha->vp_idx, status);
5088 break;
5089 }
5090
5091 if (send_notify_ack)
5092 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5093 0, 0);
5094 }
5095
5096 /*
5097 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5098 * This function sends busy to ISP 2xxx or 24xx.
5099 */
5100 static int __qlt_send_busy(struct qla_qpair *qpair,
5101 struct atio_from_isp *atio, uint16_t status)
5102 {
5103 struct scsi_qla_host *vha = qpair->vha;
5104 struct ctio7_to_24xx *ctio24;
5105 struct qla_hw_data *ha = vha->hw;
5106 request_t *pkt;
5107 struct fc_port *sess = NULL;
5108 unsigned long flags;
5109 u16 temp;
5110
5111 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5112 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5113 atio->u.isp24.fcp_hdr.s_id);
5114 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5115 if (!sess) {
5116 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
5117 return 0;
5118 }
5119 /* Sending marker isn't necessary, since we called from ISR */
5120
5121 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
5122 if (!pkt) {
5123 ql_dbg(ql_dbg_io, vha, 0x3063,
5124 "qla_target(%d): %s failed: unable to allocate "
5125 "request packet", vha->vp_idx, __func__);
5126 return -ENOMEM;
5127 }
5128
5129 qpair->tgt_counters.num_q_full_sent++;
5130 pkt->entry_count = 1;
5131 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5132
5133 ctio24 = (struct ctio7_to_24xx *)pkt;
5134 ctio24->entry_type = CTIO_TYPE7;
5135 ctio24->nport_handle = sess->loop_id;
5136 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5137 ctio24->vp_index = vha->vp_idx;
5138 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5139 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5140 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5141 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5142 temp = (atio->u.isp24.attr << 9) |
5143 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5144 CTIO7_FLAGS_DONT_RET_CTIO;
5145 ctio24->u.status1.flags = cpu_to_le16(temp);
5146 /*
5147 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5148 * if the explicit conformation is used.
5149 */
5150 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5151 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5152 /* Memory Barrier */
5153 wmb();
5154 if (qpair->reqq_start_iocbs)
5155 qpair->reqq_start_iocbs(qpair);
5156 else
5157 qla2x00_start_iocbs(vha, qpair->req);
5158 return 0;
5159 }
5160
5161 /*
5162 * This routine is used to allocate a command for either a QFull condition
5163 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5164 * out previously.
5165 */
5166 static void
5167 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5168 struct atio_from_isp *atio, uint16_t status, int qfull)
5169 {
5170 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5171 struct qla_hw_data *ha = vha->hw;
5172 struct fc_port *sess;
5173 struct se_session *se_sess;
5174 struct qla_tgt_cmd *cmd;
5175 int tag;
5176 unsigned long flags;
5177
5178 if (unlikely(tgt->tgt_stop)) {
5179 ql_dbg(ql_dbg_io, vha, 0x300a,
5180 "New command while device %p is shutting down\n", tgt);
5181 return;
5182 }
5183
5184 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5185 vha->hw->tgt.num_qfull_cmds_dropped++;
5186 if (vha->hw->tgt.num_qfull_cmds_dropped >
5187 vha->qla_stats.stat_max_qfull_cmds_dropped)
5188 vha->qla_stats.stat_max_qfull_cmds_dropped =
5189 vha->hw->tgt.num_qfull_cmds_dropped;
5190
5191 ql_dbg(ql_dbg_io, vha, 0x3068,
5192 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5193 vha->vp_idx, __func__,
5194 vha->hw->tgt.num_qfull_cmds_dropped);
5195
5196 qlt_chk_exch_leak_thresh_hold(vha);
5197 return;
5198 }
5199
5200 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5201 (vha, atio->u.isp24.fcp_hdr.s_id);
5202 if (!sess)
5203 return;
5204
5205 se_sess = sess->se_sess;
5206
5207 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5208 if (tag < 0)
5209 return;
5210
5211 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5212 if (!cmd) {
5213 ql_dbg(ql_dbg_io, vha, 0x3009,
5214 "qla_target(%d): %s: Allocation of cmd failed\n",
5215 vha->vp_idx, __func__);
5216
5217 vha->hw->tgt.num_qfull_cmds_dropped++;
5218 if (vha->hw->tgt.num_qfull_cmds_dropped >
5219 vha->qla_stats.stat_max_qfull_cmds_dropped)
5220 vha->qla_stats.stat_max_qfull_cmds_dropped =
5221 vha->hw->tgt.num_qfull_cmds_dropped;
5222
5223 qlt_chk_exch_leak_thresh_hold(vha);
5224 return;
5225 }
5226
5227 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5228
5229 qlt_incr_num_pend_cmds(vha);
5230 INIT_LIST_HEAD(&cmd->cmd_list);
5231 memcpy(&cmd->atio, atio, sizeof(*atio));
5232
5233 cmd->tgt = vha->vha_tgt.qla_tgt;
5234 cmd->vha = vha;
5235 cmd->reset_count = ha->base_qpair->chip_reset;
5236 cmd->q_full = 1;
5237 cmd->qpair = ha->base_qpair;
5238
5239 if (qfull) {
5240 cmd->q_full = 1;
5241 /* NOTE: borrowing the state field to carry the status */
5242 cmd->state = status;
5243 } else
5244 cmd->term_exchg = 1;
5245
5246 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5247 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5248
5249 vha->hw->tgt.num_qfull_cmds_alloc++;
5250 if (vha->hw->tgt.num_qfull_cmds_alloc >
5251 vha->qla_stats.stat_max_qfull_cmds_alloc)
5252 vha->qla_stats.stat_max_qfull_cmds_alloc =
5253 vha->hw->tgt.num_qfull_cmds_alloc;
5254 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5255 }
5256
5257 int
5258 qlt_free_qfull_cmds(struct qla_qpair *qpair)
5259 {
5260 struct scsi_qla_host *vha = qpair->vha;
5261 struct qla_hw_data *ha = vha->hw;
5262 unsigned long flags;
5263 struct qla_tgt_cmd *cmd, *tcmd;
5264 struct list_head free_list, q_full_list;
5265 int rc = 0;
5266
5267 if (list_empty(&ha->tgt.q_full_list))
5268 return 0;
5269
5270 INIT_LIST_HEAD(&free_list);
5271 INIT_LIST_HEAD(&q_full_list);
5272
5273 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5274 if (list_empty(&ha->tgt.q_full_list)) {
5275 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5276 return 0;
5277 }
5278
5279 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5280 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5281
5282 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5283 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
5284 if (cmd->q_full)
5285 /* cmd->state is a borrowed field to hold status */
5286 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
5287 else if (cmd->term_exchg)
5288 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
5289
5290 if (rc == -ENOMEM)
5291 break;
5292
5293 if (cmd->q_full)
5294 ql_dbg(ql_dbg_io, vha, 0x3006,
5295 "%s: busy sent for ox_id[%04x]\n", __func__,
5296 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5297 else if (cmd->term_exchg)
5298 ql_dbg(ql_dbg_io, vha, 0x3007,
5299 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5300 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5301 else
5302 ql_dbg(ql_dbg_io, vha, 0x3008,
5303 "%s: Unexpected cmd in QFull list %p\n", __func__,
5304 cmd);
5305
5306 list_del(&cmd->cmd_list);
5307 list_add_tail(&cmd->cmd_list, &free_list);
5308
5309 /* piggy back on hardware_lock for protection */
5310 vha->hw->tgt.num_qfull_cmds_alloc--;
5311 }
5312 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
5313
5314 cmd = NULL;
5315
5316 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5317 list_del(&cmd->cmd_list);
5318 /* This cmd was never sent to TCM. There is no need
5319 * to schedule free or call free_cmd
5320 */
5321 qlt_free_cmd(cmd);
5322 }
5323
5324 if (!list_empty(&q_full_list)) {
5325 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5326 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5327 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5328 }
5329
5330 return rc;
5331 }
5332
5333 static void
5334 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5335 uint16_t status)
5336 {
5337 int rc = 0;
5338 struct scsi_qla_host *vha = qpair->vha;
5339
5340 rc = __qlt_send_busy(qpair, atio, status);
5341 if (rc == -ENOMEM)
5342 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5343 }
5344
5345 static int
5346 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5347 struct atio_from_isp *atio, uint8_t ha_locked)
5348 {
5349 struct qla_hw_data *ha = vha->hw;
5350 uint16_t status;
5351 unsigned long flags;
5352
5353 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5354 return 0;
5355
5356 if (!ha_locked)
5357 spin_lock_irqsave(&ha->hardware_lock, flags);
5358 status = temp_sam_status;
5359 qlt_send_busy(qpair, atio, status);
5360 if (!ha_locked)
5361 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5362
5363 return 1;
5364 }
5365
5366 /* ha->hardware_lock supposed to be held on entry */
5367 /* called via callback from qla2xxx */
5368 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5369 struct atio_from_isp *atio, uint8_t ha_locked)
5370 {
5371 struct qla_hw_data *ha = vha->hw;
5372 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5373 int rc;
5374 unsigned long flags;
5375
5376 if (unlikely(tgt == NULL)) {
5377 ql_dbg(ql_dbg_tgt, vha, 0x3064,
5378 "ATIO pkt, but no tgt (ha %p)", ha);
5379 return;
5380 }
5381 /*
5382 * In tgt_stop mode we also should allow all requests to pass.
5383 * Otherwise, some commands can stuck.
5384 */
5385
5386 tgt->atio_irq_cmd_count++;
5387
5388 switch (atio->u.raw.entry_type) {
5389 case ATIO_TYPE7:
5390 if (unlikely(atio->u.isp24.exchange_addr ==
5391 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
5392 ql_dbg(ql_dbg_io, vha, 0x3065,
5393 "qla_target(%d): ATIO_TYPE7 "
5394 "received with UNKNOWN exchange address, "
5395 "sending QUEUE_FULL\n", vha->vp_idx);
5396 if (!ha_locked)
5397 spin_lock_irqsave(&ha->hardware_lock, flags);
5398 qlt_send_busy(ha->base_qpair, atio,
5399 SAM_STAT_TASK_SET_FULL);
5400 if (!ha_locked)
5401 spin_unlock_irqrestore(&ha->hardware_lock,
5402 flags);
5403 break;
5404 }
5405
5406 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5407 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5408 atio, ha_locked);
5409 if (rc != 0) {
5410 tgt->atio_irq_cmd_count--;
5411 return;
5412 }
5413 rc = qlt_handle_cmd_for_atio(vha, atio);
5414 } else {
5415 rc = qlt_handle_task_mgmt(vha, atio);
5416 }
5417 if (unlikely(rc != 0)) {
5418 if (rc == -ESRCH) {
5419 if (!ha_locked)
5420 spin_lock_irqsave(&ha->hardware_lock,
5421 flags);
5422
5423 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5424 qlt_send_busy(ha->base_qpair, atio,
5425 SAM_STAT_BUSY);
5426 #else
5427 qlt_send_term_exchange(ha->base_qpair, NULL,
5428 atio, 1, 0);
5429 #endif
5430 if (!ha_locked)
5431 spin_unlock_irqrestore(
5432 &ha->hardware_lock, flags);
5433 } else {
5434 if (tgt->tgt_stop) {
5435 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5436 "qla_target: Unable to send "
5437 "command to target for req, "
5438 "ignoring.\n");
5439 } else {
5440 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5441 "qla_target(%d): Unable to send "
5442 "command to target, sending BUSY "
5443 "status.\n", vha->vp_idx);
5444 if (!ha_locked)
5445 spin_lock_irqsave(
5446 &ha->hardware_lock, flags);
5447 qlt_send_busy(ha->base_qpair,
5448 atio, SAM_STAT_BUSY);
5449 if (!ha_locked)
5450 spin_unlock_irqrestore(
5451 &ha->hardware_lock, flags);
5452 }
5453 }
5454 }
5455 break;
5456
5457 case IMMED_NOTIFY_TYPE:
5458 {
5459 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5460 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5461 "qla_target(%d): Received ATIO packet %x "
5462 "with error status %x\n", vha->vp_idx,
5463 atio->u.raw.entry_type,
5464 atio->u.isp2x.entry_status);
5465 break;
5466 }
5467 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5468
5469 if (!ha_locked)
5470 spin_lock_irqsave(&ha->hardware_lock, flags);
5471 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5472 if (!ha_locked)
5473 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5474 break;
5475 }
5476
5477 default:
5478 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5479 "qla_target(%d): Received unknown ATIO atio "
5480 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5481 break;
5482 }
5483
5484 tgt->atio_irq_cmd_count--;
5485 }
5486
5487 /* ha->hardware_lock supposed to be held on entry */
5488 /* called via callback from qla2xxx */
5489 static void qlt_response_pkt(struct scsi_qla_host *vha,
5490 struct rsp_que *rsp, response_t *pkt)
5491 {
5492 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5493
5494 if (unlikely(tgt == NULL)) {
5495 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5496 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5497 vha->vp_idx, pkt->entry_type, vha->hw);
5498 return;
5499 }
5500
5501 /*
5502 * In tgt_stop mode we also should allow all requests to pass.
5503 * Otherwise, some commands can stuck.
5504 */
5505
5506 switch (pkt->entry_type) {
5507 case CTIO_CRC2:
5508 case CTIO_TYPE7:
5509 {
5510 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5511 qlt_do_ctio_completion(vha, rsp, entry->handle,
5512 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5513 entry);
5514 break;
5515 }
5516
5517 case ACCEPT_TGT_IO_TYPE:
5518 {
5519 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5520 int rc;
5521 if (atio->u.isp2x.status !=
5522 cpu_to_le16(ATIO_CDB_VALID)) {
5523 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5524 "qla_target(%d): ATIO with error "
5525 "status %x received\n", vha->vp_idx,
5526 le16_to_cpu(atio->u.isp2x.status));
5527 break;
5528 }
5529
5530 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
5531 if (rc != 0)
5532 return;
5533
5534 rc = qlt_handle_cmd_for_atio(vha, atio);
5535 if (unlikely(rc != 0)) {
5536 if (rc == -ESRCH) {
5537 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5538 qlt_send_busy(rsp->qpair, atio, 0);
5539 #else
5540 qlt_send_term_exchange(rsp->qpair, NULL, atio, 1, 0);
5541 #endif
5542 } else {
5543 if (tgt->tgt_stop) {
5544 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5545 "qla_target: Unable to send "
5546 "command to target, sending TERM "
5547 "EXCHANGE for rsp\n");
5548 qlt_send_term_exchange(rsp->qpair, NULL,
5549 atio, 1, 0);
5550 } else {
5551 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5552 "qla_target(%d): Unable to send "
5553 "command to target, sending BUSY "
5554 "status\n", vha->vp_idx);
5555 qlt_send_busy(rsp->qpair, atio, 0);
5556 }
5557 }
5558 }
5559 }
5560 break;
5561
5562 case CONTINUE_TGT_IO_TYPE:
5563 {
5564 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5565 qlt_do_ctio_completion(vha, rsp, entry->handle,
5566 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5567 entry);
5568 break;
5569 }
5570
5571 case CTIO_A64_TYPE:
5572 {
5573 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5574 qlt_do_ctio_completion(vha, rsp, entry->handle,
5575 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5576 entry);
5577 break;
5578 }
5579
5580 case IMMED_NOTIFY_TYPE:
5581 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5582 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5583 break;
5584
5585 case NOTIFY_ACK_TYPE:
5586 if (tgt->notify_ack_expected > 0) {
5587 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5588 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5589 "NOTIFY_ACK seq %08x status %x\n",
5590 le16_to_cpu(entry->u.isp2x.seq_id),
5591 le16_to_cpu(entry->u.isp2x.status));
5592 tgt->notify_ack_expected--;
5593 if (entry->u.isp2x.status !=
5594 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5595 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5596 "qla_target(%d): NOTIFY_ACK "
5597 "failed %x\n", vha->vp_idx,
5598 le16_to_cpu(entry->u.isp2x.status));
5599 }
5600 } else {
5601 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5602 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5603 vha->vp_idx);
5604 }
5605 break;
5606
5607 case ABTS_RECV_24XX:
5608 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5609 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5610 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5611 break;
5612
5613 case ABTS_RESP_24XX:
5614 if (tgt->abts_resp_expected > 0) {
5615 struct abts_resp_from_24xx_fw *entry =
5616 (struct abts_resp_from_24xx_fw *)pkt;
5617 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5618 "ABTS_RESP_24XX: compl_status %x\n",
5619 entry->compl_status);
5620 tgt->abts_resp_expected--;
5621 if (le16_to_cpu(entry->compl_status) !=
5622 ABTS_RESP_COMPL_SUCCESS) {
5623 if ((entry->error_subcode1 == 0x1E) &&
5624 (entry->error_subcode2 == 0)) {
5625 /*
5626 * We've got a race here: aborted
5627 * exchange not terminated, i.e.
5628 * response for the aborted command was
5629 * sent between the abort request was
5630 * received and processed.
5631 * Unfortunately, the firmware has a
5632 * silly requirement that all aborted
5633 * exchanges must be explicitely
5634 * terminated, otherwise it refuses to
5635 * send responses for the abort
5636 * requests. So, we have to
5637 * (re)terminate the exchange and retry
5638 * the abort response.
5639 */
5640 qlt_24xx_retry_term_exchange(vha,
5641 entry);
5642 } else
5643 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5644 "qla_target(%d): ABTS_RESP_24XX "
5645 "failed %x (subcode %x:%x)",
5646 vha->vp_idx, entry->compl_status,
5647 entry->error_subcode1,
5648 entry->error_subcode2);
5649 }
5650 } else {
5651 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5652 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5653 "received\n", vha->vp_idx);
5654 }
5655 break;
5656
5657 default:
5658 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5659 "qla_target(%d): Received unknown response pkt "
5660 "type %x\n", vha->vp_idx, pkt->entry_type);
5661 break;
5662 }
5663
5664 }
5665
5666 /*
5667 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5668 */
5669 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5670 uint16_t *mailbox)
5671 {
5672 struct qla_hw_data *ha = vha->hw;
5673 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5674 int login_code;
5675
5676 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
5677 return;
5678
5679 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5680 IS_QLA2100(ha))
5681 return;
5682 /*
5683 * In tgt_stop mode we also should allow all requests to pass.
5684 * Otherwise, some commands can stuck.
5685 */
5686
5687
5688 switch (code) {
5689 case MBA_RESET: /* Reset */
5690 case MBA_SYSTEM_ERR: /* System Error */
5691 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5692 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5693 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5694 "qla_target(%d): System error async event %#x "
5695 "occurred", vha->vp_idx, code);
5696 break;
5697 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5698 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5699 break;
5700
5701 case MBA_LOOP_UP:
5702 {
5703 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
5704 "qla_target(%d): Async LOOP_UP occurred "
5705 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5706 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5707 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5708 if (tgt->link_reinit_iocb_pending) {
5709 qlt_send_notify_ack(ha->base_qpair,
5710 (void *)&tgt->link_reinit_iocb,
5711 0, 0, 0, 0, 0, 0);
5712 tgt->link_reinit_iocb_pending = 0;
5713 }
5714 break;
5715 }
5716
5717 case MBA_LIP_OCCURRED:
5718 case MBA_LOOP_DOWN:
5719 case MBA_LIP_RESET:
5720 case MBA_RSCN_UPDATE:
5721 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
5722 "qla_target(%d): Async event %#x occurred "
5723 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5724 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5725 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5726 break;
5727
5728 case MBA_REJECTED_FCP_CMD:
5729 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5730 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5731 vha->vp_idx,
5732 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5733 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5734
5735 if (le16_to_cpu(mailbox[3]) == 1) {
5736 /* exchange starvation. */
5737 vha->hw->exch_starvation++;
5738 if (vha->hw->exch_starvation > 5) {
5739 ql_log(ql_log_warn, vha, 0xd03a,
5740 "Exchange starvation-. Resetting RISC\n");
5741
5742 vha->hw->exch_starvation = 0;
5743 if (IS_P3P_TYPE(vha->hw))
5744 set_bit(FCOE_CTX_RESET_NEEDED,
5745 &vha->dpc_flags);
5746 else
5747 set_bit(ISP_ABORT_NEEDED,
5748 &vha->dpc_flags);
5749 qla2xxx_wake_dpc(vha);
5750 }
5751 }
5752 break;
5753
5754 case MBA_PORT_UPDATE:
5755 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5756 "qla_target(%d): Port update async event %#x "
5757 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
5758 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5759 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5760 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5761
5762 login_code = le16_to_cpu(mailbox[2]);
5763 if (login_code == 0x4) {
5764 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5765 "Async MB 2: Got PLOGI Complete\n");
5766 vha->hw->exch_starvation = 0;
5767 } else if (login_code == 0x7)
5768 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5769 "Async MB 2: Port Logged Out\n");
5770 break;
5771 default:
5772 break;
5773 }
5774
5775 }
5776
5777 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5778 uint16_t loop_id)
5779 {
5780 fc_port_t *fcport, *tfcp, *del;
5781 int rc;
5782 unsigned long flags;
5783 u8 newfcport = 0;
5784
5785 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
5786 if (!fcport) {
5787 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5788 "qla_target(%d): Allocation of tmp FC port failed",
5789 vha->vp_idx);
5790 return NULL;
5791 }
5792
5793 fcport->loop_id = loop_id;
5794
5795 rc = qla24xx_gpdb_wait(vha, fcport, 0);
5796 if (rc != QLA_SUCCESS) {
5797 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5798 "qla_target(%d): Failed to retrieve fcport "
5799 "information -- get_port_database() returned %x "
5800 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5801 kfree(fcport);
5802 return NULL;
5803 }
5804
5805 del = NULL;
5806 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5807 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5808
5809 if (tfcp) {
5810 tfcp->d_id = fcport->d_id;
5811 tfcp->port_type = fcport->port_type;
5812 tfcp->supported_classes = fcport->supported_classes;
5813 tfcp->flags |= fcport->flags;
5814 tfcp->scan_state = QLA_FCPORT_FOUND;
5815
5816 del = fcport;
5817 fcport = tfcp;
5818 } else {
5819 if (vha->hw->current_topology == ISP_CFG_F)
5820 fcport->flags |= FCF_FABRIC_DEVICE;
5821
5822 list_add_tail(&fcport->list, &vha->vp_fcports);
5823 if (!IS_SW_RESV_ADDR(fcport->d_id))
5824 vha->fcport_count++;
5825 fcport->login_gen++;
5826 fcport->disc_state = DSC_LOGIN_COMPLETE;
5827 fcport->login_succ = 1;
5828 newfcport = 1;
5829 }
5830
5831 fcport->deleted = 0;
5832 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5833
5834 switch (vha->host->active_mode) {
5835 case MODE_INITIATOR:
5836 case MODE_DUAL:
5837 if (newfcport) {
5838 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
5839 ql_dbg(ql_dbg_disc, vha, 0x20fe,
5840 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5841 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5842 qla24xx_post_upd_fcport_work(vha, fcport);
5843 } else {
5844 ql_dbg(ql_dbg_disc, vha, 0x20ff,
5845 "%s %d %8phC post gpsc fcp_cnt %d\n",
5846 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5847 qla24xx_post_gpsc_work(vha, fcport);
5848 }
5849 }
5850 break;
5851
5852 case MODE_TARGET:
5853 default:
5854 break;
5855 }
5856 if (del)
5857 qla2x00_free_fcport(del);
5858
5859 return fcport;
5860 }
5861
5862 /* Must be called under tgt_mutex */
5863 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
5864 uint8_t *s_id)
5865 {
5866 struct fc_port *sess = NULL;
5867 fc_port_t *fcport = NULL;
5868 int rc, global_resets;
5869 uint16_t loop_id = 0;
5870
5871 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5872 /*
5873 * This is Domain Controller, so it should be
5874 * OK to drop SCSI commands from it.
5875 */
5876 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5877 "Unable to find initiator with S_ID %x:%x:%x",
5878 s_id[0], s_id[1], s_id[2]);
5879 return NULL;
5880 }
5881
5882 mutex_lock(&vha->vha_tgt.tgt_mutex);
5883
5884 retry:
5885 global_resets =
5886 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
5887
5888 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5889 if (rc != 0) {
5890 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5891
5892 ql_log(ql_log_info, vha, 0xf071,
5893 "qla_target(%d): Unable to find "
5894 "initiator with S_ID %x:%x:%x",
5895 vha->vp_idx, s_id[0], s_id[1],
5896 s_id[2]);
5897
5898 if (rc == -ENOENT) {
5899 qlt_port_logo_t logo;
5900 sid_to_portid(s_id, &logo.id);
5901 logo.cmd_count = 1;
5902 qlt_send_first_logo(vha, &logo);
5903 }
5904
5905 return NULL;
5906 }
5907
5908 fcport = qlt_get_port_database(vha, loop_id);
5909 if (!fcport) {
5910 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5911 return NULL;
5912 }
5913
5914 if (global_resets !=
5915 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
5916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5917 "qla_target(%d): global reset during session discovery "
5918 "(counter was %d, new %d), retrying", vha->vp_idx,
5919 global_resets,
5920 atomic_read(&vha->vha_tgt.
5921 qla_tgt->tgt_global_resets_count));
5922 goto retry;
5923 }
5924
5925 sess = qlt_create_sess(vha, fcport, true);
5926
5927 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5928
5929 return sess;
5930 }
5931
5932 static void qlt_abort_work(struct qla_tgt *tgt,
5933 struct qla_tgt_sess_work_param *prm)
5934 {
5935 struct scsi_qla_host *vha = tgt->vha;
5936 struct qla_hw_data *ha = vha->hw;
5937 struct fc_port *sess = NULL;
5938 unsigned long flags = 0, flags2 = 0;
5939 uint32_t be_s_id;
5940 uint8_t s_id[3];
5941 int rc;
5942
5943 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5944
5945 if (tgt->tgt_stop)
5946 goto out_term2;
5947
5948 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5949 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5950 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5951
5952 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5953 (unsigned char *)&be_s_id);
5954 if (!sess) {
5955 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5956
5957 sess = qlt_make_local_sess(vha, s_id);
5958 /* sess has got an extra creation ref */
5959
5960 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
5961 if (!sess)
5962 goto out_term2;
5963 } else {
5964 if (sess->deleted) {
5965 sess = NULL;
5966 goto out_term2;
5967 }
5968
5969 if (!kref_get_unless_zero(&sess->sess_kref)) {
5970 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
5971 "%s: kref_get fail %8phC \n",
5972 __func__, sess->port_name);
5973 sess = NULL;
5974 goto out_term2;
5975 }
5976 }
5977
5978 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
5979 ha->tgt.tgt_ops->put_sess(sess);
5980 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5981
5982 if (rc != 0)
5983 goto out_term;
5984 return;
5985
5986 out_term2:
5987 if (sess)
5988 ha->tgt.tgt_ops->put_sess(sess);
5989 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5990
5991 out_term:
5992 spin_lock_irqsave(&ha->hardware_lock, flags);
5993 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
5994 FCP_TMF_REJECTED, false);
5995 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5996 }
5997
5998 static void qlt_tmr_work(struct qla_tgt *tgt,
5999 struct qla_tgt_sess_work_param *prm)
6000 {
6001 struct atio_from_isp *a = &prm->tm_iocb2;
6002 struct scsi_qla_host *vha = tgt->vha;
6003 struct qla_hw_data *ha = vha->hw;
6004 struct fc_port *sess = NULL;
6005 unsigned long flags;
6006 uint8_t *s_id = NULL; /* to hide compiler warnings */
6007 int rc;
6008 u64 unpacked_lun;
6009 int fn;
6010 void *iocb;
6011
6012 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6013
6014 if (tgt->tgt_stop)
6015 goto out_term2;
6016
6017 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6018 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6019 if (!sess) {
6020 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6021
6022 sess = qlt_make_local_sess(vha, s_id);
6023 /* sess has got an extra creation ref */
6024
6025 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
6026 if (!sess)
6027 goto out_term2;
6028 } else {
6029 if (sess->deleted) {
6030 sess = NULL;
6031 goto out_term2;
6032 }
6033
6034 if (!kref_get_unless_zero(&sess->sess_kref)) {
6035 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
6036 "%s: kref_get fail %8phC\n",
6037 __func__, sess->port_name);
6038 sess = NULL;
6039 goto out_term2;
6040 }
6041 }
6042
6043 iocb = a;
6044 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
6045 unpacked_lun =
6046 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
6047
6048 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
6049 ha->tgt.tgt_ops->put_sess(sess);
6050 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6051
6052 if (rc != 0)
6053 goto out_term;
6054 return;
6055
6056 out_term2:
6057 if (sess)
6058 ha->tgt.tgt_ops->put_sess(sess);
6059 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
6060 out_term:
6061 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
6062 }
6063
6064 static void qlt_sess_work_fn(struct work_struct *work)
6065 {
6066 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6067 struct scsi_qla_host *vha = tgt->vha;
6068 unsigned long flags;
6069
6070 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6071
6072 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6073 while (!list_empty(&tgt->sess_works_list)) {
6074 struct qla_tgt_sess_work_param *prm = list_entry(
6075 tgt->sess_works_list.next, typeof(*prm),
6076 sess_works_list_entry);
6077
6078 /*
6079 * This work can be scheduled on several CPUs at time, so we
6080 * must delete the entry to eliminate double processing
6081 */
6082 list_del(&prm->sess_works_list_entry);
6083
6084 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6085
6086 switch (prm->type) {
6087 case QLA_TGT_SESS_WORK_ABORT:
6088 qlt_abort_work(tgt, prm);
6089 break;
6090 case QLA_TGT_SESS_WORK_TM:
6091 qlt_tmr_work(tgt, prm);
6092 break;
6093 default:
6094 BUG_ON(1);
6095 break;
6096 }
6097
6098 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6099
6100 kfree(prm);
6101 }
6102 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6103 }
6104
6105 /* Must be called under tgt_host_action_mutex */
6106 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6107 {
6108 struct qla_tgt *tgt;
6109 int rc, i;
6110 struct qla_qpair_hint *h;
6111
6112 if (!QLA_TGT_MODE_ENABLED())
6113 return 0;
6114
6115 if (!IS_TGT_MODE_CAPABLE(ha)) {
6116 ql_log(ql_log_warn, base_vha, 0xe070,
6117 "This adapter does not support target mode.\n");
6118 return 0;
6119 }
6120
6121 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
6122 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
6123
6124 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
6125
6126 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6127 if (!tgt) {
6128 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6129 "Unable to allocate struct qla_tgt\n");
6130 return -ENOMEM;
6131 }
6132
6133 tgt->qphints = kzalloc((ha->max_qpairs + 1) *
6134 sizeof(struct qla_qpair_hint), GFP_KERNEL);
6135 if (!tgt->qphints) {
6136 kfree(tgt);
6137 ql_log(ql_log_warn, base_vha, 0x0197,
6138 "Unable to allocate qpair hints.\n");
6139 return -ENOMEM;
6140 }
6141
6142 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6143 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6144
6145 rc = btree_init64(&tgt->lun_qpair_map);
6146 if (rc) {
6147 kfree(tgt->qphints);
6148 kfree(tgt);
6149 ql_log(ql_log_info, base_vha, 0x0198,
6150 "Unable to initialize lun_qpair_map btree\n");
6151 return -EIO;
6152 }
6153 h = &tgt->qphints[0];
6154 h->qpair = ha->base_qpair;
6155 INIT_LIST_HEAD(&h->hint_elem);
6156 h->cpuid = ha->base_qpair->cpuid;
6157 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6158
6159 for (i = 0; i < ha->max_qpairs; i++) {
6160 unsigned long flags;
6161
6162 struct qla_qpair *qpair = ha->queue_pair_map[i];
6163 h = &tgt->qphints[i + 1];
6164 INIT_LIST_HEAD(&h->hint_elem);
6165 if (qpair) {
6166 h->qpair = qpair;
6167 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6168 list_add_tail(&h->hint_elem, &qpair->hints_list);
6169 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6170 h->cpuid = qpair->cpuid;
6171 }
6172 }
6173
6174 tgt->ha = ha;
6175 tgt->vha = base_vha;
6176 init_waitqueue_head(&tgt->waitQ);
6177 INIT_LIST_HEAD(&tgt->del_sess_list);
6178 spin_lock_init(&tgt->sess_work_lock);
6179 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6180 INIT_LIST_HEAD(&tgt->sess_works_list);
6181 atomic_set(&tgt->tgt_global_resets_count, 0);
6182
6183 base_vha->vha_tgt.qla_tgt = tgt;
6184
6185 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6186 "qla_target(%d): using 64 Bit PCI addressing",
6187 base_vha->vp_idx);
6188 /* 3 is reserved */
6189 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6190
6191 mutex_lock(&qla_tgt_mutex);
6192 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6193 mutex_unlock(&qla_tgt_mutex);
6194
6195 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6196 ha->tgt.tgt_ops->add_target(base_vha);
6197
6198 return 0;
6199 }
6200
6201 /* Must be called under tgt_host_action_mutex */
6202 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6203 {
6204 if (!vha->vha_tgt.qla_tgt)
6205 return 0;
6206
6207 if (vha->fc_vport) {
6208 qlt_release(vha->vha_tgt.qla_tgt);
6209 return 0;
6210 }
6211
6212 /* free left over qfull cmds */
6213 qlt_init_term_exchange(vha);
6214
6215 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6216 vha->host_no, ha);
6217 qlt_release(vha->vha_tgt.qla_tgt);
6218
6219 return 0;
6220 }
6221
6222 void qlt_remove_target_resources(struct qla_hw_data *ha)
6223 {
6224 struct scsi_qla_host *node;
6225 u32 key = 0;
6226
6227 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6228 btree_remove32(&ha->tgt.host_map, key);
6229
6230 btree_destroy32(&ha->tgt.host_map);
6231 }
6232
6233 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6234 unsigned char *b)
6235 {
6236 int i;
6237
6238 pr_debug("qla2xxx HW vha->node_name: ");
6239 for (i = 0; i < WWN_SIZE; i++)
6240 pr_debug("%02x ", vha->node_name[i]);
6241 pr_debug("\n");
6242 pr_debug("qla2xxx HW vha->port_name: ");
6243 for (i = 0; i < WWN_SIZE; i++)
6244 pr_debug("%02x ", vha->port_name[i]);
6245 pr_debug("\n");
6246
6247 pr_debug("qla2xxx passed configfs WWPN: ");
6248 put_unaligned_be64(wwpn, b);
6249 for (i = 0; i < WWN_SIZE; i++)
6250 pr_debug("%02x ", b[i]);
6251 pr_debug("\n");
6252 }
6253
6254 /**
6255 * qla_tgt_lport_register - register lport with external module
6256 *
6257 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6258 * @wwpn: Passwd FC target WWPN
6259 * @callback: lport initialization callback for tcm_qla2xxx code
6260 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6261 */
6262 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6263 u64 npiv_wwpn, u64 npiv_wwnn,
6264 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6265 {
6266 struct qla_tgt *tgt;
6267 struct scsi_qla_host *vha;
6268 struct qla_hw_data *ha;
6269 struct Scsi_Host *host;
6270 unsigned long flags;
6271 int rc;
6272 u8 b[WWN_SIZE];
6273
6274 mutex_lock(&qla_tgt_mutex);
6275 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6276 vha = tgt->vha;
6277 ha = vha->hw;
6278
6279 host = vha->host;
6280 if (!host)
6281 continue;
6282
6283 if (!(host->hostt->supported_mode & MODE_TARGET))
6284 continue;
6285
6286 spin_lock_irqsave(&ha->hardware_lock, flags);
6287 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6288 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6289 host->host_no);
6290 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6291 continue;
6292 }
6293 if (tgt->tgt_stop) {
6294 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6295 host->host_no);
6296 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6297 continue;
6298 }
6299 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6300
6301 if (!scsi_host_get(host)) {
6302 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6303 "Unable to scsi_host_get() for"
6304 " qla2xxx scsi_host\n");
6305 continue;
6306 }
6307 qlt_lport_dump(vha, phys_wwpn, b);
6308
6309 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6310 scsi_host_put(host);
6311 continue;
6312 }
6313 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6314 if (rc != 0)
6315 scsi_host_put(host);
6316
6317 mutex_unlock(&qla_tgt_mutex);
6318 return rc;
6319 }
6320 mutex_unlock(&qla_tgt_mutex);
6321
6322 return -ENODEV;
6323 }
6324 EXPORT_SYMBOL(qlt_lport_register);
6325
6326 /**
6327 * qla_tgt_lport_deregister - Degister lport
6328 *
6329 * @vha: Registered scsi_qla_host pointer
6330 */
6331 void qlt_lport_deregister(struct scsi_qla_host *vha)
6332 {
6333 struct qla_hw_data *ha = vha->hw;
6334 struct Scsi_Host *sh = vha->host;
6335 /*
6336 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6337 */
6338 vha->vha_tgt.target_lport_ptr = NULL;
6339 ha->tgt.tgt_ops = NULL;
6340 /*
6341 * Release the Scsi_Host reference for the underlying qla2xxx host
6342 */
6343 scsi_host_put(sh);
6344 }
6345 EXPORT_SYMBOL(qlt_lport_deregister);
6346
6347 /* Must be called under HW lock */
6348 static void qlt_set_mode(struct scsi_qla_host *vha)
6349 {
6350 switch (ql2x_ini_mode) {
6351 case QLA2XXX_INI_MODE_DISABLED:
6352 case QLA2XXX_INI_MODE_EXCLUSIVE:
6353 vha->host->active_mode = MODE_TARGET;
6354 break;
6355 case QLA2XXX_INI_MODE_ENABLED:
6356 vha->host->active_mode = MODE_UNKNOWN;
6357 break;
6358 case QLA2XXX_INI_MODE_DUAL:
6359 vha->host->active_mode = MODE_DUAL;
6360 break;
6361 default:
6362 break;
6363 }
6364 }
6365
6366 /* Must be called under HW lock */
6367 static void qlt_clear_mode(struct scsi_qla_host *vha)
6368 {
6369 switch (ql2x_ini_mode) {
6370 case QLA2XXX_INI_MODE_DISABLED:
6371 vha->host->active_mode = MODE_UNKNOWN;
6372 break;
6373 case QLA2XXX_INI_MODE_EXCLUSIVE:
6374 vha->host->active_mode = MODE_INITIATOR;
6375 break;
6376 case QLA2XXX_INI_MODE_ENABLED:
6377 case QLA2XXX_INI_MODE_DUAL:
6378 vha->host->active_mode = MODE_INITIATOR;
6379 break;
6380 default:
6381 break;
6382 }
6383 }
6384
6385 /*
6386 * qla_tgt_enable_vha - NO LOCK HELD
6387 *
6388 * host_reset, bring up w/ Target Mode Enabled
6389 */
6390 void
6391 qlt_enable_vha(struct scsi_qla_host *vha)
6392 {
6393 struct qla_hw_data *ha = vha->hw;
6394 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6395 unsigned long flags;
6396 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6397
6398 if (!tgt) {
6399 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6400 "Unable to locate qla_tgt pointer from"
6401 " struct qla_hw_data\n");
6402 dump_stack();
6403 return;
6404 }
6405
6406 spin_lock_irqsave(&ha->hardware_lock, flags);
6407 tgt->tgt_stopped = 0;
6408 qlt_set_mode(vha);
6409 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6410
6411 if (vha->vp_idx) {
6412 qla24xx_disable_vp(vha);
6413 qla24xx_enable_vp(vha);
6414 } else {
6415 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6416 qla2xxx_wake_dpc(base_vha);
6417 qla2x00_wait_for_hba_online(base_vha);
6418 }
6419 }
6420 EXPORT_SYMBOL(qlt_enable_vha);
6421
6422 /*
6423 * qla_tgt_disable_vha - NO LOCK HELD
6424 *
6425 * Disable Target Mode and reset the adapter
6426 */
6427 static void qlt_disable_vha(struct scsi_qla_host *vha)
6428 {
6429 struct qla_hw_data *ha = vha->hw;
6430 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6431 unsigned long flags;
6432
6433 if (!tgt) {
6434 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6435 "Unable to locate qla_tgt pointer from"
6436 " struct qla_hw_data\n");
6437 dump_stack();
6438 return;
6439 }
6440
6441 spin_lock_irqsave(&ha->hardware_lock, flags);
6442 qlt_clear_mode(vha);
6443 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6444
6445 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6446 qla2xxx_wake_dpc(vha);
6447 qla2x00_wait_for_hba_online(vha);
6448 }
6449
6450 /*
6451 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6452 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6453 * members.
6454 */
6455 void
6456 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6457 {
6458 vha->vha_tgt.qla_tgt = NULL;
6459
6460 mutex_init(&vha->vha_tgt.tgt_mutex);
6461 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6462
6463 qlt_clear_mode(vha);
6464
6465 /*
6466 * NOTE: Currently the value is kept the same for <24xx and
6467 * >=24xx ISPs. If it is necessary to change it,
6468 * the check should be added for specific ISPs,
6469 * assigning the value appropriately.
6470 */
6471 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6472
6473 qlt_add_target(ha, vha);
6474 }
6475
6476 void
6477 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6478 {
6479 /*
6480 * FC-4 Feature bit 0 indicates target functionality to the name server.
6481 */
6482 if (qla_tgt_mode_enabled(vha)) {
6483 ct_req->req.rff_id.fc4_feature = BIT_0;
6484 } else if (qla_ini_mode_enabled(vha)) {
6485 ct_req->req.rff_id.fc4_feature = BIT_1;
6486 } else if (qla_dual_mode_enabled(vha))
6487 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
6488 }
6489
6490 /*
6491 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6492 * @ha: HA context
6493 *
6494 * Beginning of ATIO ring has initialization control block already built
6495 * by nvram config routine.
6496 *
6497 * Returns 0 on success.
6498 */
6499 void
6500 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6501 {
6502 struct qla_hw_data *ha = vha->hw;
6503 uint16_t cnt;
6504 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6505
6506 if (qla_ini_mode_enabled(vha))
6507 return;
6508
6509 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6510 pkt->u.raw.signature = ATIO_PROCESSED;
6511 pkt++;
6512 }
6513
6514 }
6515
6516 /*
6517 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6518 * @ha: SCSI driver HA context
6519 */
6520 void
6521 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6522 {
6523 struct qla_hw_data *ha = vha->hw;
6524 struct atio_from_isp *pkt;
6525 int cnt, i;
6526
6527 if (!ha->flags.fw_started)
6528 return;
6529
6530 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6531 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
6532 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6533 cnt = pkt->u.raw.entry_count;
6534
6535 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6536 /*
6537 * This packet is corrupted. The header + payload
6538 * can not be trusted. There is no point in passing
6539 * it further up.
6540 */
6541 ql_log(ql_log_warn, vha, 0xd03c,
6542 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6543 pkt->u.isp24.fcp_hdr.s_id,
6544 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6545 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6546
6547 adjust_corrupted_atio(pkt);
6548 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6549 ha_locked, 0);
6550 } else {
6551 qlt_24xx_atio_pkt_all_vps(vha,
6552 (struct atio_from_isp *)pkt, ha_locked);
6553 }
6554
6555 for (i = 0; i < cnt; i++) {
6556 ha->tgt.atio_ring_index++;
6557 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6558 ha->tgt.atio_ring_index = 0;
6559 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6560 } else
6561 ha->tgt.atio_ring_ptr++;
6562
6563 pkt->u.raw.signature = ATIO_PROCESSED;
6564 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6565 }
6566 wmb();
6567 }
6568
6569 /* Adjust ring index */
6570 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6571 }
6572
6573 void
6574 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6575 {
6576 struct qla_hw_data *ha = vha->hw;
6577 struct init_cb_24xx *icb;
6578 if (!QLA_TGT_MODE_ENABLED())
6579 return;
6580
6581 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6582 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6583 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6584
6585 icb = (struct init_cb_24xx *)ha->init_cb;
6586
6587 if ((ql2xenablemsix != 0) && IS_ATIO_MSIX_CAPABLE(ha)) {
6588 struct qla_msix_entry *msix = &ha->msix_entries[2];
6589
6590 icb->msix_atio = cpu_to_le16(msix->entry);
6591 ql_dbg(ql_dbg_init, vha, 0xf072,
6592 "Registering ICB vector 0x%x for atio que.\n",
6593 msix->entry);
6594 } else if (ql2xenablemsix == 0) {
6595 icb->firmware_options_2 |= cpu_to_le32(BIT_26);
6596 ql_dbg(ql_dbg_init, vha, 0xf07f,
6597 "Registering INTx vector for ATIO.\n");
6598 }
6599 }
6600
6601 void
6602 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6603 {
6604 struct qla_hw_data *ha = vha->hw;
6605
6606 if (!QLA_TGT_MODE_ENABLED())
6607 return;
6608
6609 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6610 if (!ha->tgt.saved_set) {
6611 /* We save only once */
6612 ha->tgt.saved_exchange_count = nv->exchange_count;
6613 ha->tgt.saved_firmware_options_1 =
6614 nv->firmware_options_1;
6615 ha->tgt.saved_firmware_options_2 =
6616 nv->firmware_options_2;
6617 ha->tgt.saved_firmware_options_3 =
6618 nv->firmware_options_3;
6619 ha->tgt.saved_set = 1;
6620 }
6621
6622 if (qla_tgt_mode_enabled(vha))
6623 nv->exchange_count = cpu_to_le16(0xFFFF);
6624 else /* dual */
6625 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
6626
6627 /* Enable target mode */
6628 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6629
6630 /* Disable ini mode, if requested */
6631 if (qla_tgt_mode_enabled(vha))
6632 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6633
6634 /* Disable Full Login after LIP */
6635 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6636 /* Enable initial LIP */
6637 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6638 if (ql2xtgt_tape_enable)
6639 /* Enable FC Tape support */
6640 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6641 else
6642 /* Disable FC Tape support */
6643 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6644
6645 /* Disable Full Login after LIP */
6646 nv->host_p &= cpu_to_le32(~BIT_10);
6647
6648 /*
6649 * clear BIT 15 explicitly as we have seen at least
6650 * a couple of instances where this was set and this
6651 * was causing the firmware to not be initialized.
6652 */
6653 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6654 /* Enable target PRLI control */
6655 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6656 } else {
6657 if (ha->tgt.saved_set) {
6658 nv->exchange_count = ha->tgt.saved_exchange_count;
6659 nv->firmware_options_1 =
6660 ha->tgt.saved_firmware_options_1;
6661 nv->firmware_options_2 =
6662 ha->tgt.saved_firmware_options_2;
6663 nv->firmware_options_3 =
6664 ha->tgt.saved_firmware_options_3;
6665 }
6666 return;
6667 }
6668
6669 if (ha->base_qpair->enable_class_2) {
6670 if (vha->flags.init_done)
6671 fc_host_supported_classes(vha->host) =
6672 FC_COS_CLASS2 | FC_COS_CLASS3;
6673
6674 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6675 } else {
6676 if (vha->flags.init_done)
6677 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6678
6679 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6680 }
6681 }
6682
6683 void
6684 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6685 struct init_cb_24xx *icb)
6686 {
6687 struct qla_hw_data *ha = vha->hw;
6688
6689 if (!QLA_TGT_MODE_ENABLED())
6690 return;
6691
6692 if (ha->tgt.node_name_set) {
6693 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6694 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6695 }
6696
6697 /* disable ZIO at start time. */
6698 if (!vha->flags.init_done) {
6699 uint32_t tmp;
6700 tmp = le32_to_cpu(icb->firmware_options_2);
6701 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6702 icb->firmware_options_2 = cpu_to_le32(tmp);
6703 }
6704 }
6705
6706 void
6707 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6708 {
6709 struct qla_hw_data *ha = vha->hw;
6710
6711 if (!QLA_TGT_MODE_ENABLED())
6712 return;
6713
6714 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6715 if (!ha->tgt.saved_set) {
6716 /* We save only once */
6717 ha->tgt.saved_exchange_count = nv->exchange_count;
6718 ha->tgt.saved_firmware_options_1 =
6719 nv->firmware_options_1;
6720 ha->tgt.saved_firmware_options_2 =
6721 nv->firmware_options_2;
6722 ha->tgt.saved_firmware_options_3 =
6723 nv->firmware_options_3;
6724 ha->tgt.saved_set = 1;
6725 }
6726
6727 if (qla_tgt_mode_enabled(vha))
6728 nv->exchange_count = cpu_to_le16(0xFFFF);
6729 else /* dual */
6730 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
6731
6732 /* Enable target mode */
6733 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6734
6735 /* Disable ini mode, if requested */
6736 if (qla_tgt_mode_enabled(vha))
6737 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6738 /* Disable Full Login after LIP */
6739 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6740 /* Enable initial LIP */
6741 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6742 /*
6743 * clear BIT 15 explicitly as we have seen at
6744 * least a couple of instances where this was set
6745 * and this was causing the firmware to not be
6746 * initialized.
6747 */
6748 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6749 if (ql2xtgt_tape_enable)
6750 /* Enable FC tape support */
6751 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6752 else
6753 /* Disable FC tape support */
6754 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6755
6756 /* Disable Full Login after LIP */
6757 nv->host_p &= cpu_to_le32(~BIT_10);
6758 /* Enable target PRLI control */
6759 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6760 } else {
6761 if (ha->tgt.saved_set) {
6762 nv->exchange_count = ha->tgt.saved_exchange_count;
6763 nv->firmware_options_1 =
6764 ha->tgt.saved_firmware_options_1;
6765 nv->firmware_options_2 =
6766 ha->tgt.saved_firmware_options_2;
6767 nv->firmware_options_3 =
6768 ha->tgt.saved_firmware_options_3;
6769 }
6770 return;
6771 }
6772
6773 if (ha->base_qpair->enable_class_2) {
6774 if (vha->flags.init_done)
6775 fc_host_supported_classes(vha->host) =
6776 FC_COS_CLASS2 | FC_COS_CLASS3;
6777
6778 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6779 } else {
6780 if (vha->flags.init_done)
6781 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6782
6783 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6784 }
6785 }
6786
6787 void
6788 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6789 struct init_cb_81xx *icb)
6790 {
6791 struct qla_hw_data *ha = vha->hw;
6792
6793 if (!QLA_TGT_MODE_ENABLED())
6794 return;
6795
6796 if (ha->tgt.node_name_set) {
6797 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6798 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6799 }
6800
6801 /* disable ZIO at start time. */
6802 if (!vha->flags.init_done) {
6803 uint32_t tmp;
6804 tmp = le32_to_cpu(icb->firmware_options_2);
6805 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6806 icb->firmware_options_2 = cpu_to_le32(tmp);
6807 }
6808
6809 }
6810
6811 void
6812 qlt_83xx_iospace_config(struct qla_hw_data *ha)
6813 {
6814 if (!QLA_TGT_MODE_ENABLED())
6815 return;
6816
6817 ha->msix_count += 1; /* For ATIO Q */
6818 }
6819
6820
6821 void
6822 qlt_modify_vp_config(struct scsi_qla_host *vha,
6823 struct vp_config_entry_24xx *vpmod)
6824 {
6825 /* enable target mode. Bit5 = 1 => disable */
6826 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
6827 vpmod->options_idx1 &= ~BIT_5;
6828
6829 /* Disable ini mode, if requested. bit4 = 1 => disable */
6830 if (qla_tgt_mode_enabled(vha))
6831 vpmod->options_idx1 &= ~BIT_4;
6832 }
6833
6834 void
6835 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6836 {
6837 int rc;
6838
6839 if (!QLA_TGT_MODE_ENABLED())
6840 return;
6841
6842 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6843 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6844 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6845 } else {
6846 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6847 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6848 }
6849
6850 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6851 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
6852
6853 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6854 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6855 qlt_unknown_atio_work_fn);
6856
6857 qlt_clear_mode(base_vha);
6858
6859 rc = btree_init32(&ha->tgt.host_map);
6860 if (rc)
6861 ql_log(ql_log_info, base_vha, 0xd03d,
6862 "Unable to initialize ha->host_map btree\n");
6863
6864 qlt_update_vp_map(base_vha, SET_VP_IDX);
6865 }
6866
6867 irqreturn_t
6868 qla83xx_msix_atio_q(int irq, void *dev_id)
6869 {
6870 struct rsp_que *rsp;
6871 scsi_qla_host_t *vha;
6872 struct qla_hw_data *ha;
6873 unsigned long flags;
6874
6875 rsp = (struct rsp_que *) dev_id;
6876 ha = rsp->hw;
6877 vha = pci_get_drvdata(ha->pdev);
6878
6879 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6880
6881 qlt_24xx_process_atio_queue(vha, 0);
6882
6883 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6884
6885 return IRQ_HANDLED;
6886 }
6887
6888 static void
6889 qlt_handle_abts_recv_work(struct work_struct *work)
6890 {
6891 struct qla_tgt_sess_op *op = container_of(work,
6892 struct qla_tgt_sess_op, work);
6893 scsi_qla_host_t *vha = op->vha;
6894 struct qla_hw_data *ha = vha->hw;
6895 unsigned long flags;
6896
6897 if (qla2x00_reset_active(vha) ||
6898 (op->chip_reset != ha->base_qpair->chip_reset))
6899 return;
6900
6901 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6902 qlt_24xx_process_atio_queue(vha, 0);
6903 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6904
6905 spin_lock_irqsave(&ha->hardware_lock, flags);
6906 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
6907 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6908
6909 kfree(op);
6910 }
6911
6912 void
6913 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
6914 response_t *pkt)
6915 {
6916 struct qla_tgt_sess_op *op;
6917
6918 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6919
6920 if (!op) {
6921 /* do not reach for ATIO queue here. This is best effort err
6922 * recovery at this point.
6923 */
6924 qlt_response_pkt_all_vps(vha, rsp, pkt);
6925 return;
6926 }
6927
6928 memcpy(&op->atio, pkt, sizeof(*pkt));
6929 op->vha = vha;
6930 op->chip_reset = vha->hw->base_qpair->chip_reset;
6931 op->rsp = rsp;
6932 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6933 queue_work(qla_tgt_wq, &op->work);
6934 return;
6935 }
6936
6937 int
6938 qlt_mem_alloc(struct qla_hw_data *ha)
6939 {
6940 if (!QLA_TGT_MODE_ENABLED())
6941 return 0;
6942
6943 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6944 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6945 if (!ha->tgt.tgt_vp_map)
6946 return -ENOMEM;
6947
6948 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6949 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6950 &ha->tgt.atio_dma, GFP_KERNEL);
6951 if (!ha->tgt.atio_ring) {
6952 kfree(ha->tgt.tgt_vp_map);
6953 return -ENOMEM;
6954 }
6955 return 0;
6956 }
6957
6958 void
6959 qlt_mem_free(struct qla_hw_data *ha)
6960 {
6961 if (!QLA_TGT_MODE_ENABLED())
6962 return;
6963
6964 if (ha->tgt.atio_ring) {
6965 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6966 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6967 ha->tgt.atio_dma);
6968 }
6969 kfree(ha->tgt.tgt_vp_map);
6970 }
6971
6972 /* vport_slock to be held by the caller */
6973 void
6974 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6975 {
6976 void *slot;
6977 u32 key;
6978 int rc;
6979
6980 if (!QLA_TGT_MODE_ENABLED())
6981 return;
6982
6983 key = vha->d_id.b24;
6984
6985 switch (cmd) {
6986 case SET_VP_IDX:
6987 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6988 break;
6989 case SET_AL_PA:
6990 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
6991 if (!slot) {
6992 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
6993 "Save vha in host_map %p %06x\n", vha, key);
6994 rc = btree_insert32(&vha->hw->tgt.host_map,
6995 key, vha, GFP_ATOMIC);
6996 if (rc)
6997 ql_log(ql_log_info, vha, 0xd03e,
6998 "Unable to insert s_id into host_map: %06x\n",
6999 key);
7000 return;
7001 }
7002 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7003 "replace existing vha in host_map %p %06x\n", vha, key);
7004 btree_update32(&vha->hw->tgt.host_map, key, vha);
7005 break;
7006 case RESET_VP_IDX:
7007 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7008 break;
7009 case RESET_AL_PA:
7010 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
7011 "clear vha in host_map %p %06x\n", vha, key);
7012 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7013 if (slot)
7014 btree_remove32(&vha->hw->tgt.host_map, key);
7015 vha->d_id.b24 = 0;
7016 break;
7017 }
7018 }
7019
7020 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7021 {
7022 unsigned long flags;
7023 struct qla_hw_data *ha = vha->hw;
7024
7025 if (!vha->d_id.b24) {
7026 spin_lock_irqsave(&ha->vport_slock, flags);
7027 vha->d_id = id;
7028 qlt_update_vp_map(vha, SET_AL_PA);
7029 spin_unlock_irqrestore(&ha->vport_slock, flags);
7030 } else if (vha->d_id.b24 != id.b24) {
7031 spin_lock_irqsave(&ha->vport_slock, flags);
7032 qlt_update_vp_map(vha, RESET_AL_PA);
7033 vha->d_id = id;
7034 qlt_update_vp_map(vha, SET_AL_PA);
7035 spin_unlock_irqrestore(&ha->vport_slock, flags);
7036 }
7037 }
7038
7039 static int __init qlt_parse_ini_mode(void)
7040 {
7041 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7042 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7043 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7044 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7045 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7046 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
7047 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7048 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
7049 else
7050 return false;
7051
7052 return true;
7053 }
7054
7055 int __init qlt_init(void)
7056 {
7057 int ret;
7058
7059 if (!qlt_parse_ini_mode()) {
7060 ql_log(ql_log_fatal, NULL, 0xe06b,
7061 "qlt_parse_ini_mode() failed\n");
7062 return -EINVAL;
7063 }
7064
7065 if (!QLA_TGT_MODE_ENABLED())
7066 return 0;
7067
7068 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7069 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7070 qla_tgt_mgmt_cmd), 0, NULL);
7071 if (!qla_tgt_mgmt_cmd_cachep) {
7072 ql_log(ql_log_fatal, NULL, 0xd04b,
7073 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
7074 return -ENOMEM;
7075 }
7076
7077 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
7078 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7079 0, NULL);
7080
7081 if (!qla_tgt_plogi_cachep) {
7082 ql_log(ql_log_fatal, NULL, 0xe06d,
7083 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7084 ret = -ENOMEM;
7085 goto out_mgmt_cmd_cachep;
7086 }
7087
7088 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7089 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7090 if (!qla_tgt_mgmt_cmd_mempool) {
7091 ql_log(ql_log_fatal, NULL, 0xe06e,
7092 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7093 ret = -ENOMEM;
7094 goto out_plogi_cachep;
7095 }
7096
7097 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7098 if (!qla_tgt_wq) {
7099 ql_log(ql_log_fatal, NULL, 0xe06f,
7100 "alloc_workqueue for qla_tgt_wq failed\n");
7101 ret = -ENOMEM;
7102 goto out_cmd_mempool;
7103 }
7104 /*
7105 * Return 1 to signal that initiator-mode is being disabled
7106 */
7107 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7108
7109 out_cmd_mempool:
7110 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7111 out_plogi_cachep:
7112 kmem_cache_destroy(qla_tgt_plogi_cachep);
7113 out_mgmt_cmd_cachep:
7114 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7115 return ret;
7116 }
7117
7118 void qlt_exit(void)
7119 {
7120 if (!QLA_TGT_MODE_ENABLED())
7121 return;
7122
7123 destroy_workqueue(qla_tgt_wq);
7124 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7125 kmem_cache_destroy(qla_tgt_plogi_cachep);
7126 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7127 }
Ubuntu Hirsute Linux kernel mirror