1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
4 *
5 * based on qla2x00t.c code:
6 *
7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
8 * Copyright (C) 2004 - 2005 Leonid Stoljar
9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
10 * Copyright (C) 2006 - 2010 ID7 Ltd.
11 *
12 * Forward port and refactoring to modern qla2xxx and target/configfs
13 *
14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
15 */
16
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/types.h>
20 #include <linux/blkdev.h>
21 #include <linux/interrupt.h>
22 #include <linux/pci.h>
23 #include <linux/delay.h>
24 #include <linux/list.h>
25 #include <linux/workqueue.h>
26 #include <linux/unaligned.h>
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_host.h>
29 #include <scsi/scsi_tcq.h>
30
31 #include "qla_def.h"
32 #include "qla_target.h"
33
34 static int ql2xtgt_tape_enable;
35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
36 MODULE_PARM_DESC(ql2xtgt_tape_enable,
37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
38
39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
40 module_param(qlini_mode, charp, S_IRUGO);
41 MODULE_PARM_DESC(qlini_mode,
42 "Determines when initiator mode will be enabled. Possible values: "
43 "\"exclusive\" - initiator mode will be enabled on load, "
44 "disabled on enabling target mode and then on disabling target mode "
45 "enabled back; "
46 "\"disabled\" - initiator mode will never be enabled; "
47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
48 "when ready "
49 "\"enabled\" (default) - initiator mode will always stay enabled.");
50
51 int ql2xuctrlirq = 1;
52 module_param(ql2xuctrlirq, int, 0644);
53 MODULE_PARM_DESC(ql2xuctrlirq,
54 "User to control IRQ placement via smp_affinity."
55 "Valid with qlini_mode=disabled."
56 "1(default): enable");
57
58 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
59
60 static int qla_sam_status = SAM_STAT_BUSY;
61 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */
62
63 /*
64 * From scsi/fc/fc_fcp.h
65 */
66 enum fcp_resp_rsp_codes {
67 FCP_TMF_CMPL = 0,
68 FCP_DATA_LEN_INVALID = 1,
69 FCP_CMND_FIELDS_INVALID = 2,
70 FCP_DATA_PARAM_MISMATCH = 3,
71 FCP_TMF_REJECTED = 4,
72 FCP_TMF_FAILED = 5,
73 FCP_TMF_INVALID_LUN = 9,
74 };
75
76 /*
77 * fc_pri_ta from scsi/fc/fc_fcp.h
78 */
79 #define FCP_PTA_SIMPLE 0 /* simple task attribute */
80 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */
81 #define FCP_PTA_ORDERED 2 /* ordered task attribute */
82 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */
83 #define FCP_PTA_MASK 7 /* mask for task attribute field */
84 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
85 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
86
87 /*
88 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
89 * must be called under HW lock and could unlock/lock it inside.
90 * It isn't an issue, since in the current implementation on the time when
91 * those functions are called:
92 *
93 * - Either context is IRQ and only IRQ handler can modify HW data,
94 * including rings related fields,
95 *
96 * - Or access to target mode variables from struct qla_tgt doesn't
97 * cross those functions boundaries, except tgt_stop, which
98 * additionally protected by irq_cmd_count.
99 */
100 /* Predefs for callbacks handed to qla2xxx LLD */
101 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
102 struct atio_from_isp *pkt, uint8_t);
103 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
104 response_t *pkt);
105 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
106 int fn, void *iocb, int flags);
107 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
108 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
109 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
110 struct atio_from_isp *atio, uint16_t status, int qfull);
111 static void qlt_disable_vha(struct scsi_qla_host *vha);
112 static void qlt_clear_tgt_db(struct qla_tgt *tgt);
113 static void qlt_send_notify_ack(struct qla_qpair *qpair,
114 struct imm_ntfy_from_isp *ntfy,
115 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
116 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
117 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
118 struct imm_ntfy_from_isp *imm, int ha_locked);
119 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
120 fc_port_t *fcport, bool local);
121 void qlt_unreg_sess(struct fc_port *sess);
122 static void qlt_24xx_handle_abts(struct scsi_qla_host *,
123 struct abts_recv_from_24xx *);
124 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
125 uint16_t);
126 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t);
127 static inline uint32_t qlt_make_handle(struct qla_qpair *);
128
129 /*
130 * Global Variables
131 */
132 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
133 struct kmem_cache *qla_tgt_plogi_cachep;
134 static mempool_t *qla_tgt_mgmt_cmd_mempool;
135 static struct workqueue_struct *qla_tgt_wq;
136 static DEFINE_MUTEX(qla_tgt_mutex);
137 static LIST_HEAD(qla_tgt_glist);
138
prot_op_str(u32 prot_op)139 static const char *prot_op_str(u32 prot_op)
140 {
141 switch (prot_op) {
142 case TARGET_PROT_NORMAL: return "NORMAL";
143 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
144 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
145 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
146 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
147 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
148 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
149 default: return "UNKNOWN";
150 }
151 }
152
153 /* This API intentionally takes dest as a parameter, rather than returning
154 * int value to avoid caller forgetting to issue wmb() after the store */
qlt_do_generation_tick(struct scsi_qla_host * vha,int * dest)155 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
156 {
157 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
158 *dest = atomic_inc_return(&base_vha->generation_tick);
159 /* memory barrier */
160 wmb();
161 }
162
163 /* Might release hw lock, then reaquire!! */
qlt_issue_marker(struct scsi_qla_host * vha,int vha_locked)164 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
165 {
166 /* Send marker if required */
167 if (unlikely(vha->marker_needed != 0)) {
168 int rc = qla2x00_issue_marker(vha, vha_locked);
169
170 if (rc != QLA_SUCCESS) {
171 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
172 "qla_target(%d): issue_marker() failed\n",
173 vha->vp_idx);
174 }
175 return rc;
176 }
177 return QLA_SUCCESS;
178 }
179
qla_find_host_by_d_id(struct scsi_qla_host * vha,be_id_t d_id)180 struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha,
181 be_id_t d_id)
182 {
183 struct scsi_qla_host *host;
184 uint32_t key;
185
186 if (vha->d_id.b.area == d_id.area &&
187 vha->d_id.b.domain == d_id.domain &&
188 vha->d_id.b.al_pa == d_id.al_pa)
189 return vha;
190
191 key = be_to_port_id(d_id).b24;
192
193 host = btree_lookup32(&vha->hw->host_map, key);
194 if (!host)
195 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
196 "Unable to find host %06x\n", key);
197
198 return host;
199 }
200
qlt_incr_num_pend_cmds(struct scsi_qla_host * vha)201 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
202 {
203 unsigned long flags;
204
205 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
206
207 vha->hw->tgt.num_pend_cmds++;
208 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
209 vha->qla_stats.stat_max_pend_cmds =
210 vha->hw->tgt.num_pend_cmds;
211 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
212 }
qlt_decr_num_pend_cmds(struct scsi_qla_host * vha)213 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
214 {
215 unsigned long flags;
216
217 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
218 vha->hw->tgt.num_pend_cmds--;
219 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
220 }
221
222
qlt_queue_unknown_atio(scsi_qla_host_t * vha,struct atio_from_isp * atio,uint8_t ha_locked)223 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
224 struct atio_from_isp *atio, uint8_t ha_locked)
225 {
226 struct qla_tgt_sess_op *u;
227 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
228 unsigned long flags;
229
230 if (tgt->tgt_stop) {
231 ql_dbg(ql_dbg_async, vha, 0x502c,
232 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
233 vha->vp_idx);
234 goto out_term;
235 }
236
237 u = kzalloc(sizeof(*u), GFP_ATOMIC);
238 if (u == NULL)
239 goto out_term;
240
241 u->vha = vha;
242 memcpy(&u->atio, atio, sizeof(*atio));
243 INIT_LIST_HEAD(&u->cmd_list);
244
245 spin_lock_irqsave(&vha->cmd_list_lock, flags);
246 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
247 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
248
249 schedule_delayed_work(&vha->unknown_atio_work, 1);
250
251 out:
252 return;
253
254 out_term:
255 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
256 goto out;
257 }
258
qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host * vha,uint8_t ha_locked)259 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
260 uint8_t ha_locked)
261 {
262 struct qla_tgt_sess_op *u, *t;
263 scsi_qla_host_t *host;
264 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
265 unsigned long flags;
266 uint8_t queued = 0;
267
268 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
269 if (u->aborted) {
270 ql_dbg(ql_dbg_async, vha, 0x502e,
271 "Freeing unknown %s %p, because of Abort\n",
272 "ATIO_TYPE7", u);
273 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
274 &u->atio, ha_locked, 0);
275 goto abort;
276 }
277
278 host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
279 if (host != NULL) {
280 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
281 "Requeuing unknown ATIO_TYPE7 %p\n", u);
282 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
283 } else if (tgt->tgt_stop) {
284 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
285 "Freeing unknown %s %p, because tgt is being stopped\n",
286 "ATIO_TYPE7", u);
287 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
288 &u->atio, ha_locked, 0);
289 } else {
290 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
291 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
292 if (!queued) {
293 queued = 1;
294 schedule_delayed_work(&vha->unknown_atio_work,
295 1);
296 }
297 continue;
298 }
299
300 abort:
301 spin_lock_irqsave(&vha->cmd_list_lock, flags);
302 list_del(&u->cmd_list);
303 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
304 kfree(u);
305 }
306 }
307
qlt_unknown_atio_work_fn(struct work_struct * work)308 void qlt_unknown_atio_work_fn(struct work_struct *work)
309 {
310 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
311 struct scsi_qla_host, unknown_atio_work);
312
313 qlt_try_to_dequeue_unknown_atios(vha, 0);
314 }
315
qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host * vha,struct atio_from_isp * atio,uint8_t ha_locked)316 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
317 struct atio_from_isp *atio, uint8_t ha_locked)
318 {
319 ql_dbg(ql_dbg_tgt, vha, 0xe072,
320 "%s: qla_target(%d): type %x ox_id %04x\n",
321 __func__, vha->vp_idx, atio->u.raw.entry_type,
322 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
323
324 switch (atio->u.raw.entry_type) {
325 case ATIO_TYPE7:
326 {
327 struct scsi_qla_host *host = qla_find_host_by_d_id(vha,
328 atio->u.isp24.fcp_hdr.d_id);
329 if (unlikely(NULL == host)) {
330 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
331 "qla_target(%d): Received ATIO_TYPE7 "
332 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
333 atio->u.isp24.fcp_hdr.d_id.domain,
334 atio->u.isp24.fcp_hdr.d_id.area,
335 atio->u.isp24.fcp_hdr.d_id.al_pa);
336
337
338 qlt_queue_unknown_atio(vha, atio, ha_locked);
339 break;
340 }
341 if (unlikely(!list_empty(&vha->unknown_atio_list)))
342 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
343
344 qlt_24xx_atio_pkt(host, atio, ha_locked);
345 break;
346 }
347
348 case IMMED_NOTIFY_TYPE:
349 {
350 struct scsi_qla_host *host = vha;
351 struct imm_ntfy_from_isp *entry =
352 (struct imm_ntfy_from_isp *)atio;
353
354 qlt_issue_marker(vha, ha_locked);
355
356 if ((entry->u.isp24.vp_index != 0xFF) &&
357 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) {
358 host = qla_find_host_by_vp_idx(vha,
359 entry->u.isp24.vp_index);
360 if (unlikely(!host)) {
361 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
362 "qla_target(%d): Received "
363 "ATIO (IMMED_NOTIFY_TYPE) "
364 "with unknown vp_index %d\n",
365 vha->vp_idx, entry->u.isp24.vp_index);
366 break;
367 }
368 }
369 qlt_24xx_atio_pkt(host, atio, ha_locked);
370 break;
371 }
372
373 case VP_RPT_ID_IOCB_TYPE:
374 qla24xx_report_id_acquisition(vha,
375 (struct vp_rpt_id_entry_24xx *)atio);
376 break;
377
378 case ABTS_RECV_24XX:
379 {
380 struct abts_recv_from_24xx *entry =
381 (struct abts_recv_from_24xx *)atio;
382 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha,
383 entry->vp_index);
384 unsigned long flags;
385
386 if (unlikely(!host)) {
387 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
388 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
389 "received, with unknown vp_index %d\n",
390 vha->vp_idx, entry->vp_index);
391 break;
392 }
393 if (!ha_locked)
394 spin_lock_irqsave(&host->hw->hardware_lock, flags);
395 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
396 if (!ha_locked)
397 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
398 break;
399 }
400
401 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
402
403 default:
404 ql_dbg(ql_dbg_tgt, vha, 0xe040,
405 "qla_target(%d): Received unknown ATIO atio "
406 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
407 break;
408 }
409
410 return false;
411 }
412
qlt_response_pkt_all_vps(struct scsi_qla_host * vha,struct rsp_que * rsp,response_t * pkt)413 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
414 struct rsp_que *rsp, response_t *pkt)
415 {
416 switch (pkt->entry_type) {
417 case CTIO_CRC2:
418 ql_dbg(ql_dbg_tgt, vha, 0xe073,
419 "qla_target(%d):%s: CRC2 Response pkt\n",
420 vha->vp_idx, __func__);
421 fallthrough;
422 case CTIO_TYPE7:
423 {
424 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
425 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha,
426 entry->vp_index);
427 if (unlikely(!host)) {
428 ql_dbg(ql_dbg_tgt, vha, 0xe041,
429 "qla_target(%d): Response pkt (CTIO_TYPE7) "
430 "received, with unknown vp_index %d\n",
431 vha->vp_idx, entry->vp_index);
432 break;
433 }
434 qlt_response_pkt(host, rsp, pkt);
435 break;
436 }
437
438 case IMMED_NOTIFY_TYPE:
439 {
440 struct scsi_qla_host *host;
441 struct imm_ntfy_from_isp *entry =
442 (struct imm_ntfy_from_isp *)pkt;
443
444 host = qla_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
445 if (unlikely(!host)) {
446 ql_dbg(ql_dbg_tgt, vha, 0xe042,
447 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
448 "received, with unknown vp_index %d\n",
449 vha->vp_idx, entry->u.isp24.vp_index);
450 break;
451 }
452 qlt_response_pkt(host, rsp, pkt);
453 break;
454 }
455
456 case NOTIFY_ACK_TYPE:
457 {
458 struct scsi_qla_host *host = vha;
459 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
460
461 if (0xFF != entry->u.isp24.vp_index) {
462 host = qla_find_host_by_vp_idx(vha,
463 entry->u.isp24.vp_index);
464 if (unlikely(!host)) {
465 ql_dbg(ql_dbg_tgt, vha, 0xe043,
466 "qla_target(%d): Response "
467 "pkt (NOTIFY_ACK_TYPE) "
468 "received, with unknown "
469 "vp_index %d\n", vha->vp_idx,
470 entry->u.isp24.vp_index);
471 break;
472 }
473 }
474 qlt_response_pkt(host, rsp, pkt);
475 break;
476 }
477
478 case ABTS_RECV_24XX:
479 {
480 struct abts_recv_from_24xx *entry =
481 (struct abts_recv_from_24xx *)pkt;
482 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha,
483 entry->vp_index);
484 if (unlikely(!host)) {
485 ql_dbg(ql_dbg_tgt, vha, 0xe044,
486 "qla_target(%d): Response pkt "
487 "(ABTS_RECV_24XX) received, with unknown "
488 "vp_index %d\n", vha->vp_idx, entry->vp_index);
489 break;
490 }
491 qlt_response_pkt(host, rsp, pkt);
492 break;
493 }
494
495 case ABTS_RESP_24XX:
496 {
497 struct abts_resp_to_24xx *entry =
498 (struct abts_resp_to_24xx *)pkt;
499 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha,
500 entry->vp_index);
501 if (unlikely(!host)) {
502 ql_dbg(ql_dbg_tgt, vha, 0xe045,
503 "qla_target(%d): Response pkt "
504 "(ABTS_RECV_24XX) received, with unknown "
505 "vp_index %d\n", vha->vp_idx, entry->vp_index);
506 break;
507 }
508 qlt_response_pkt(host, rsp, pkt);
509 break;
510 }
511 default:
512 qlt_response_pkt(vha, rsp, pkt);
513 break;
514 }
515
516 }
517
518 /*
519 * All qlt_plogi_ack_t operations are protected by hardware_lock
520 */
qla24xx_post_nack_work(struct scsi_qla_host * vha,fc_port_t * fcport,struct imm_ntfy_from_isp * ntfy,int type)521 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
522 struct imm_ntfy_from_isp *ntfy, int type)
523 {
524 struct qla_work_evt *e;
525
526 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
527 if (!e)
528 return QLA_FUNCTION_FAILED;
529
530 e->u.nack.fcport = fcport;
531 e->u.nack.type = type;
532 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
533 return qla2x00_post_work(vha, e);
534 }
535
qla2x00_async_nack_sp_done(srb_t * sp,int res)536 static void qla2x00_async_nack_sp_done(srb_t *sp, int res)
537 {
538 struct scsi_qla_host *vha = sp->vha;
539 unsigned long flags;
540
541 ql_dbg(ql_dbg_disc, vha, 0x20f2,
542 "Async done-%s res %x %8phC type %d\n",
543 sp->name, res, sp->fcport->port_name, sp->type);
544
545 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
546 sp->fcport->flags &= ~FCF_ASYNC_SENT;
547 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
548
549 switch (sp->type) {
550 case SRB_NACK_PLOGI:
551 sp->fcport->login_gen++;
552 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
553 sp->fcport->logout_on_delete = 1;
554 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
555 sp->fcport->send_els_logo = 0;
556
557 if (sp->fcport->flags & FCF_FCSP_DEVICE) {
558 ql_dbg(ql_dbg_edif, vha, 0x20ef,
559 "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__,
560 sp->fcport->port_name);
561 qla2x00_set_fcport_disc_state(sp->fcport,
562 DSC_LOGIN_AUTH_PEND);
563 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE,
564 sp->fcport->d_id.b24);
565 qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24,
566 0, sp->fcport);
567 }
568 break;
569
570 case SRB_NACK_PRLI:
571 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
572 sp->fcport->deleted = 0;
573 sp->fcport->send_els_logo = 0;
574
575 if (!sp->fcport->login_succ &&
576 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
577 sp->fcport->login_succ = 1;
578
579 vha->fcport_count++;
580 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
581 qla24xx_sched_upd_fcport(sp->fcport);
582 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
583 } else {
584 sp->fcport->login_retry = 0;
585 qla2x00_set_fcport_disc_state(sp->fcport,
586 DSC_LOGIN_COMPLETE);
587 sp->fcport->deleted = 0;
588 sp->fcport->logout_on_delete = 1;
589 }
590 break;
591
592 case SRB_NACK_LOGO:
593 sp->fcport->login_gen++;
594 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
595 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
596 break;
597 }
598 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
599
600 kref_put(&sp->cmd_kref, qla2x00_sp_release);
601 }
602
qla24xx_async_notify_ack(scsi_qla_host_t * vha,fc_port_t * fcport,struct imm_ntfy_from_isp * ntfy,int type)603 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
604 struct imm_ntfy_from_isp *ntfy, int type)
605 {
606 int rval = QLA_FUNCTION_FAILED;
607 srb_t *sp;
608 char *c = NULL;
609
610 fcport->flags |= FCF_ASYNC_SENT;
611 switch (type) {
612 case SRB_NACK_PLOGI:
613 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
614 c = "PLOGI";
615 if (vha->hw->flags.edif_enabled &&
616 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP))
617 fcport->flags |= FCF_FCSP_DEVICE;
618 break;
619 case SRB_NACK_PRLI:
620 fcport->fw_login_state = DSC_LS_PRLI_PEND;
621 fcport->deleted = 0;
622 c = "PRLI";
623 break;
624 case SRB_NACK_LOGO:
625 fcport->fw_login_state = DSC_LS_LOGO_PEND;
626 c = "LOGO";
627 break;
628 }
629
630 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
631 if (!sp)
632 goto done;
633
634 sp->type = type;
635 sp->name = "nack";
636 qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2,
637 qla2x00_async_nack_sp_done);
638
639 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
640
641 ql_dbg(ql_dbg_disc, vha, 0x20f4,
642 "Async-%s %8phC hndl %x %s\n",
643 sp->name, fcport->port_name, sp->handle, c);
644
645 rval = qla2x00_start_sp(sp);
646 if (rval != QLA_SUCCESS)
647 goto done_free_sp;
648
649 return rval;
650
651 done_free_sp:
652 kref_put(&sp->cmd_kref, qla2x00_sp_release);
653 done:
654 fcport->flags &= ~FCF_ASYNC_SENT;
655 return rval;
656 }
657
qla24xx_do_nack_work(struct scsi_qla_host * vha,struct qla_work_evt * e)658 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
659 {
660 fc_port_t *t;
661
662 switch (e->u.nack.type) {
663 case SRB_NACK_PRLI:
664 t = e->u.nack.fcport;
665 flush_work(&t->del_work);
666 flush_work(&t->free_work);
667 mutex_lock(&vha->vha_tgt.tgt_mutex);
668 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
669 mutex_unlock(&vha->vha_tgt.tgt_mutex);
670 if (t) {
671 ql_log(ql_log_info, vha, 0xd034,
672 "%s create sess success %p", __func__, t);
673 /* create sess has an extra kref */
674 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
675 }
676 break;
677 }
678 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
679 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type);
680 }
681
qla24xx_delete_sess_fn(struct work_struct * work)682 void qla24xx_delete_sess_fn(struct work_struct *work)
683 {
684 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
685 struct qla_hw_data *ha = NULL;
686
687 if (!fcport || !fcport->vha || !fcport->vha->hw)
688 return;
689
690 ha = fcport->vha->hw;
691
692 if (fcport->se_sess) {
693 ha->tgt.tgt_ops->shutdown_sess(fcport);
694 ha->tgt.tgt_ops->put_sess(fcport);
695 } else {
696 qlt_unreg_sess(fcport);
697 }
698 }
699
700 /*
701 * Called from qla2x00_reg_remote_port()
702 */
qlt_fc_port_added(struct scsi_qla_host * vha,fc_port_t * fcport)703 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
704 {
705 struct qla_hw_data *ha = vha->hw;
706 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
707 struct fc_port *sess = fcport;
708 unsigned long flags;
709
710 if (!vha->hw->tgt.tgt_ops)
711 return;
712
713 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
714 if (tgt->tgt_stop) {
715 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
716 return;
717 }
718
719 if (fcport->disc_state == DSC_DELETE_PEND) {
720 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
721 return;
722 }
723
724 if (!sess->se_sess) {
725 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
726
727 mutex_lock(&vha->vha_tgt.tgt_mutex);
728 sess = qlt_create_sess(vha, fcport, false);
729 mutex_unlock(&vha->vha_tgt.tgt_mutex);
730
731 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
732 } else {
733 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
734 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
735 return;
736 }
737
738 if (!kref_get_unless_zero(&sess->sess_kref)) {
739 ql_dbg(ql_dbg_disc, vha, 0x2107,
740 "%s: kref_get fail sess %8phC \n",
741 __func__, sess->port_name);
742 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
743 return;
744 }
745
746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
747 "qla_target(%u): %ssession for port %8phC "
748 "(loop ID %d) reappeared\n", vha->vp_idx,
749 sess->local ? "local " : "", sess->port_name, sess->loop_id);
750
751 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
752 "Reappeared sess %p\n", sess);
753
754 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
755 fcport->loop_id,
756 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
757 }
758
759 if (sess && sess->local) {
760 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
761 "qla_target(%u): local session for "
762 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
763 fcport->port_name, sess->loop_id);
764 sess->local = 0;
765 }
766 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
767
768 ha->tgt.tgt_ops->put_sess(sess);
769 }
770
771 /*
772 * This is a zero-base ref-counting solution, since hardware_lock
773 * guarantees that ref_count is not modified concurrently.
774 * Upon successful return content of iocb is undefined
775 */
776 static struct qlt_plogi_ack_t *
qlt_plogi_ack_find_add(struct scsi_qla_host * vha,port_id_t * id,struct imm_ntfy_from_isp * iocb)777 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
778 struct imm_ntfy_from_isp *iocb)
779 {
780 struct qlt_plogi_ack_t *pla;
781
782 lockdep_assert_held(&vha->hw->hardware_lock);
783
784 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
785 if (pla->id.b24 == id->b24) {
786 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d,
787 "%s %d %8phC Term INOT due to new INOT",
788 __func__, __LINE__,
789 pla->iocb.u.isp24.port_name);
790 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
791 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
792 return pla;
793 }
794 }
795
796 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
797 if (!pla) {
798 ql_dbg(ql_dbg_async, vha, 0x5088,
799 "qla_target(%d): Allocation of plogi_ack failed\n",
800 vha->vp_idx);
801 return NULL;
802 }
803
804 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
805 pla->id = *id;
806 list_add_tail(&pla->list, &vha->plogi_ack_list);
807
808 return pla;
809 }
810
qlt_plogi_ack_unref(struct scsi_qla_host * vha,struct qlt_plogi_ack_t * pla)811 void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
812 struct qlt_plogi_ack_t *pla)
813 {
814 struct imm_ntfy_from_isp *iocb = &pla->iocb;
815 port_id_t port_id;
816 uint16_t loop_id;
817 fc_port_t *fcport = pla->fcport;
818
819 BUG_ON(!pla->ref_count);
820 pla->ref_count--;
821
822 if (pla->ref_count)
823 return;
824
825 ql_dbg(ql_dbg_disc, vha, 0x5089,
826 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
827 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
828 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
829 iocb->u.isp24.port_id[0],
830 le16_to_cpu(iocb->u.isp24.nport_handle),
831 iocb->u.isp24.exchange_address, iocb->ox_id);
832
833 port_id.b.domain = iocb->u.isp24.port_id[2];
834 port_id.b.area = iocb->u.isp24.port_id[1];
835 port_id.b.al_pa = iocb->u.isp24.port_id[0];
836 port_id.b.rsvd_1 = 0;
837
838 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
839
840 fcport->loop_id = loop_id;
841 fcport->d_id = port_id;
842 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
843 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
844 else
845 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
846
847 list_for_each_entry(fcport, &vha->vp_fcports, list) {
848 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
849 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
850 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
851 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
852 }
853
854 list_del(&pla->list);
855 kmem_cache_free(qla_tgt_plogi_cachep, pla);
856 }
857
858 void
qlt_plogi_ack_link(struct scsi_qla_host * vha,struct qlt_plogi_ack_t * pla,struct fc_port * sess,enum qlt_plogi_link_t link)859 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
860 struct fc_port *sess, enum qlt_plogi_link_t link)
861 {
862 struct imm_ntfy_from_isp *iocb = &pla->iocb;
863 /* Inc ref_count first because link might already be pointing at pla */
864 pla->ref_count++;
865
866 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
867 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
868 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
869 sess, link, sess->port_name,
870 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
871 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
872 pla->ref_count, pla, link);
873
874 if (link == QLT_PLOGI_LINK_CONFLICT) {
875 switch (sess->disc_state) {
876 case DSC_DELETED:
877 case DSC_DELETE_PEND:
878 pla->ref_count--;
879 return;
880 default:
881 break;
882 }
883 }
884
885 if (sess->plogi_link[link])
886 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
887
888 if (link == QLT_PLOGI_LINK_SAME_WWN)
889 pla->fcport = sess;
890
891 sess->plogi_link[link] = pla;
892 }
893
894 typedef struct {
895 /* These fields must be initialized by the caller */
896 port_id_t id;
897 /*
898 * number of cmds dropped while we were waiting for
899 * initiator to ack LOGO initialize to 1 if LOGO is
900 * triggered by a command, otherwise, to 0
901 */
902 int cmd_count;
903
904 /* These fields are used by callee */
905 struct list_head list;
906 } qlt_port_logo_t;
907
908 static void
qlt_send_first_logo(struct scsi_qla_host * vha,qlt_port_logo_t * logo)909 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
910 {
911 qlt_port_logo_t *tmp;
912 int res;
913
914 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) {
915 res = 0;
916 goto out;
917 }
918
919 mutex_lock(&vha->vha_tgt.tgt_mutex);
920
921 list_for_each_entry(tmp, &vha->logo_list, list) {
922 if (tmp->id.b24 == logo->id.b24) {
923 tmp->cmd_count += logo->cmd_count;
924 mutex_unlock(&vha->vha_tgt.tgt_mutex);
925 return;
926 }
927 }
928
929 list_add_tail(&logo->list, &vha->logo_list);
930
931 mutex_unlock(&vha->vha_tgt.tgt_mutex);
932
933 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
934
935 mutex_lock(&vha->vha_tgt.tgt_mutex);
936 list_del(&logo->list);
937 mutex_unlock(&vha->vha_tgt.tgt_mutex);
938
939 out:
940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
943 logo->cmd_count, res);
944 }
945
qlt_free_session_done(struct work_struct * work)946 void qlt_free_session_done(struct work_struct *work)
947 {
948 struct fc_port *sess = container_of(work, struct fc_port,
949 free_work);
950 struct qla_tgt *tgt = sess->tgt;
951 struct scsi_qla_host *vha = sess->vha;
952 struct qla_hw_data *ha = vha->hw;
953 unsigned long flags;
954 bool logout_started = false;
955 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
956 struct qlt_plogi_ack_t *own =
957 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
958
959 ql_dbg(ql_dbg_disc, vha, 0xf084,
960 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
961 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
962 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
963 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
964 sess->logout_on_delete, sess->keep_nport_handle,
965 sess->send_els_logo);
966
967 if (!IS_SW_RESV_ADDR(sess->d_id)) {
968 qla2x00_mark_device_lost(vha, sess, 0);
969
970 if (sess->send_els_logo) {
971 qlt_port_logo_t logo;
972
973 logo.id = sess->d_id;
974 logo.cmd_count = 0;
975 INIT_LIST_HEAD(&logo.list);
976 if (!own)
977 qlt_send_first_logo(vha, &logo);
978 sess->send_els_logo = 0;
979 }
980
981 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
982 int rc;
983
984 if (!own ||
985 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) {
986 sess->logout_completed = 0;
987 rc = qla2x00_post_async_logout_work(vha, sess,
988 NULL);
989 if (rc != QLA_SUCCESS)
990 ql_log(ql_log_warn, vha, 0xf085,
991 "Schedule logo failed sess %p rc %d\n",
992 sess, rc);
993 else
994 logout_started = true;
995 } else if (own && (own->iocb.u.isp24.status_subcode ==
996 ELS_PRLI) && ha->flags.rida_fmt2) {
997 rc = qla2x00_post_async_prlo_work(vha, sess,
998 NULL);
999 if (rc != QLA_SUCCESS)
1000 ql_log(ql_log_warn, vha, 0xf085,
1001 "Schedule PRLO failed sess %p rc %d\n",
1002 sess, rc);
1003 else
1004 logout_started = true;
1005 }
1006 } /* if sess->logout_on_delete */
1007
1008 if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
1009 !(sess->nvme_flag & NVME_FLAG_DELETING)) {
1010 sess->nvme_flag |= NVME_FLAG_DELETING;
1011 qla_nvme_unregister_remote_port(sess);
1012 }
1013
1014 if (ha->flags.edif_enabled &&
1015 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) {
1016 sess->edif.authok = 0;
1017 if (!ha->flags.host_shutting_down) {
1018 ql_dbg(ql_dbg_edif, vha, 0x911e,
1019 "%s wwpn %8phC calling qla2x00_release_all_sadb\n",
1020 __func__, sess->port_name);
1021 qla2x00_release_all_sadb(vha, sess);
1022 } else {
1023 ql_dbg(ql_dbg_edif, vha, 0x911e,
1024 "%s bypassing release_all_sadb\n",
1025 __func__);
1026 }
1027
1028 qla_edif_clear_appdata(vha, sess);
1029 qla_edif_sess_down(vha, sess);
1030 }
1031 }
1032
1033 /*
1034 * Release the target session for FC Nexus from fabric module code.
1035 */
1036 if (sess->se_sess != NULL)
1037 ha->tgt.tgt_ops->free_session(sess);
1038
1039 if (logout_started) {
1040 bool traced = false;
1041 u16 cnt = 0;
1042
1043 while (!READ_ONCE(sess->logout_completed)) {
1044 if (!traced) {
1045 ql_dbg(ql_dbg_disc, vha, 0xf086,
1046 "%s: waiting for sess %p logout\n",
1047 __func__, sess);
1048 traced = true;
1049 }
1050 msleep(100);
1051 cnt++;
1052 /*
1053 * Driver timeout is set to 22 Sec, update count value to loop
1054 * long enough for log-out to complete before advancing. Otherwise,
1055 * straddling logout can interfere with re-login attempt.
1056 */
1057 if (cnt > 230)
1058 break;
1059 }
1060
1061 ql_dbg(ql_dbg_disc, vha, 0xf087,
1062 "%s: sess %p logout completed\n", __func__, sess);
1063 }
1064
1065 /* check for any straggling io left behind */
1066 if (!(sess->flags & FCF_FCP2_DEVICE) &&
1067 qla2x00_eh_wait_for_pending_commands(sess->vha, sess->d_id.b24, 0, WAIT_TARGET)) {
1068 ql_log(ql_log_warn, vha, 0x3027,
1069 "IO not return. Resetting.\n");
1070 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1071 qla2xxx_wake_dpc(vha);
1072 qla2x00_wait_for_chip_reset(vha);
1073 }
1074
1075 if (sess->logo_ack_needed) {
1076 sess->logo_ack_needed = 0;
1077 qla24xx_async_notify_ack(vha, sess,
1078 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
1079 }
1080
1081 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1082 if (sess->se_sess) {
1083 sess->se_sess = NULL;
1084 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1085 tgt->sess_count--;
1086 }
1087
1088 qla2x00_set_fcport_disc_state(sess, DSC_DELETED);
1089 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1090
1091 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1092 vha->fcport_count--;
1093 sess->login_succ = 0;
1094 }
1095
1096 qla2x00_clear_loop_id(sess);
1097
1098 if (sess->conflict) {
1099 sess->conflict->login_pause = 0;
1100 sess->conflict = NULL;
1101 if (!test_bit(UNLOADING, &vha->dpc_flags))
1102 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1103 }
1104
1105 {
1106 struct qlt_plogi_ack_t *con =
1107 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
1108 struct imm_ntfy_from_isp *iocb;
1109
1110 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
1111
1112 if (con) {
1113 iocb = &con->iocb;
1114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
1115 "se_sess %p / sess %p port %8phC is gone,"
1116 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1117 sess->se_sess, sess, sess->port_name,
1118 own ? "releasing own PLOGI" : "no own PLOGI pending",
1119 own ? own->ref_count : -1,
1120 iocb->u.isp24.port_name, con->ref_count);
1121 qlt_plogi_ack_unref(vha, con);
1122 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
1123 } else {
1124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1125 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1126 sess->se_sess, sess, sess->port_name,
1127 own ? "releasing own PLOGI" :
1128 "no own PLOGI pending",
1129 own ? own->ref_count : -1);
1130 }
1131
1132 if (own) {
1133 sess->fw_login_state = DSC_LS_PLOGI_PEND;
1134 qlt_plogi_ack_unref(vha, own);
1135 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1136 }
1137 }
1138
1139 sess->explicit_logout = 0;
1140 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1141
1142 qla2x00_dfs_remove_rport(vha, sess);
1143
1144 spin_lock_irqsave(&vha->work_lock, flags);
1145 sess->flags &= ~FCF_ASYNC_SENT;
1146 sess->deleted = QLA_SESS_DELETED;
1147 sess->free_pending = 0;
1148 spin_unlock_irqrestore(&vha->work_lock, flags);
1149
1150 ql_dbg(ql_dbg_disc, vha, 0xf001,
1151 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1152 sess, sess->port_name, vha->fcport_count);
1153
1154 if (tgt && (tgt->sess_count == 0))
1155 wake_up_all(&tgt->waitQ);
1156
1157 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) &&
1158 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) &&
1159 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
1160 switch (vha->host->active_mode) {
1161 case MODE_INITIATOR:
1162 case MODE_DUAL:
1163 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1164 qla2xxx_wake_dpc(vha);
1165 break;
1166 case MODE_TARGET:
1167 default:
1168 /* no-op */
1169 break;
1170 }
1171 }
1172
1173 if (vha->fcport_count == 0)
1174 wake_up_all(&vha->fcport_waitQ);
1175 }
1176
1177 /* ha->tgt.sess_lock supposed to be held on entry */
qlt_unreg_sess(struct fc_port * sess)1178 void qlt_unreg_sess(struct fc_port *sess)
1179 {
1180 struct scsi_qla_host *vha = sess->vha;
1181 unsigned long flags;
1182
1183 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
1184 "%s sess %p for deletion %8phC\n",
1185 __func__, sess, sess->port_name);
1186
1187 spin_lock_irqsave(&sess->vha->work_lock, flags);
1188 if (sess->free_pending) {
1189 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1190 return;
1191 }
1192 sess->free_pending = 1;
1193 /*
1194 * Use FCF_ASYNC_SENT flag to block other cmds used in sess
1195 * management from being sent.
1196 */
1197 sess->flags |= FCF_ASYNC_SENT;
1198 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1199 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1200
1201 if (sess->se_sess)
1202 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
1203
1204 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
1205 sess->last_rscn_gen = sess->rscn_gen;
1206 sess->last_login_gen = sess->login_gen;
1207
1208 queue_work(sess->vha->hw->wq, &sess->free_work);
1209 }
1210 EXPORT_SYMBOL(qlt_unreg_sess);
1211
qlt_reset(struct scsi_qla_host * vha,void * iocb,int mcmd)1212 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1213 {
1214 struct qla_hw_data *ha = vha->hw;
1215 struct fc_port *sess = NULL;
1216 uint16_t loop_id;
1217 int res = 0;
1218 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
1219 unsigned long flags;
1220
1221 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1222 if (loop_id == 0xFFFF) {
1223 /* Global event */
1224 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
1225 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1226 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
1227 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1228 } else {
1229 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1230 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
1231 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1232 }
1233
1234 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1235 "Using sess for qla_tgt_reset: %p\n", sess);
1236 if (!sess) {
1237 res = -ESRCH;
1238 return res;
1239 }
1240
1241 ql_dbg(ql_dbg_tgt, vha, 0xe047,
1242 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1243 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
1244 mcmd, loop_id);
1245
1246 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
1247 }
1248
qla24xx_chk_fcp_state(struct fc_port * sess)1249 static void qla24xx_chk_fcp_state(struct fc_port *sess)
1250 {
1251 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
1252 sess->logout_on_delete = 0;
1253 sess->logo_ack_needed = 0;
1254 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1255 }
1256 }
1257
qlt_schedule_sess_for_deletion(struct fc_port * sess)1258 void qlt_schedule_sess_for_deletion(struct fc_port *sess)
1259 {
1260 struct qla_tgt *tgt = sess->tgt;
1261 unsigned long flags;
1262 u16 sec;
1263
1264 switch (sess->disc_state) {
1265 case DSC_DELETE_PEND:
1266 return;
1267 case DSC_DELETED:
1268 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1269 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) {
1270 if (tgt && tgt->tgt_stop && tgt->sess_count == 0)
1271 wake_up_all(&tgt->waitQ);
1272
1273 if (sess->vha->fcport_count == 0)
1274 wake_up_all(&sess->vha->fcport_waitQ);
1275 return;
1276 }
1277 break;
1278 case DSC_UPD_FCPORT:
1279 /*
1280 * This port is not done reporting to upper layer.
1281 * let it finish
1282 */
1283 sess->next_disc_state = DSC_DELETE_PEND;
1284 sec = jiffies_to_msecs(jiffies -
1285 sess->jiffies_at_registration)/1000;
1286 if (sess->sec_since_registration < sec && sec && !(sec % 5)) {
1287 sess->sec_since_registration = sec;
1288 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
1289 "%s %8phC : Slow Rport registration(%d Sec)\n",
1290 __func__, sess->port_name, sec);
1291 }
1292 return;
1293 default:
1294 break;
1295 }
1296
1297 spin_lock_irqsave(&sess->vha->work_lock, flags);
1298 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1299 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1300 return;
1301 }
1302 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1303 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1304
1305 sess->prli_pend_timer = 0;
1306 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
1307
1308 qla24xx_chk_fcp_state(sess);
1309
1310 ql_dbg(ql_log_warn, sess->vha, 0xe001,
1311 "Scheduling sess %p for deletion %8phC fc4_type %x\n",
1312 sess, sess->port_name, sess->fc4_type);
1313
1314 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
1315 }
1316
qlt_clear_tgt_db(struct qla_tgt * tgt)1317 static void qlt_clear_tgt_db(struct qla_tgt *tgt)
1318 {
1319 struct fc_port *sess;
1320 scsi_qla_host_t *vha = tgt->vha;
1321
1322 list_for_each_entry(sess, &vha->vp_fcports, list) {
1323 if (sess->se_sess)
1324 qlt_schedule_sess_for_deletion(sess);
1325 }
1326
1327 /* At this point tgt could be already dead */
1328 }
1329
qla24xx_get_loop_id(struct scsi_qla_host * vha,be_id_t s_id,uint16_t * loop_id)1330 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id,
1331 uint16_t *loop_id)
1332 {
1333 struct qla_hw_data *ha = vha->hw;
1334 dma_addr_t gid_list_dma;
1335 struct gid_list_info *gid_list, *gid;
1336 int res, rc, i;
1337 uint16_t entries;
1338
1339 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1340 &gid_list_dma, GFP_KERNEL);
1341 if (!gid_list) {
1342 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1343 "qla_target(%d): DMA Alloc failed of %u\n",
1344 vha->vp_idx, qla2x00_gid_list_size(ha));
1345 return -ENOMEM;
1346 }
1347
1348 /* Get list of logged in devices */
1349 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
1350 if (rc != QLA_SUCCESS) {
1351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1352 "qla_target(%d): get_id_list() failed: %x\n",
1353 vha->vp_idx, rc);
1354 res = -EBUSY;
1355 goto out_free_id_list;
1356 }
1357
1358 gid = gid_list;
1359 res = -ENOENT;
1360 for (i = 0; i < entries; i++) {
1361 if (gid->al_pa == s_id.al_pa &&
1362 gid->area == s_id.area &&
1363 gid->domain == s_id.domain) {
1364 *loop_id = le16_to_cpu(gid->loop_id);
1365 res = 0;
1366 break;
1367 }
1368 gid = (void *)gid + ha->gid_list_info_size;
1369 }
1370
1371 out_free_id_list:
1372 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1373 gid_list, gid_list_dma);
1374 return res;
1375 }
1376
1377 /*
1378 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1379 * Caller must put it.
1380 */
qlt_create_sess(struct scsi_qla_host * vha,fc_port_t * fcport,bool local)1381 static struct fc_port *qlt_create_sess(
1382 struct scsi_qla_host *vha,
1383 fc_port_t *fcport,
1384 bool local)
1385 {
1386 struct qla_hw_data *ha = vha->hw;
1387 struct fc_port *sess = fcport;
1388 unsigned long flags;
1389
1390 if (vha->vha_tgt.qla_tgt->tgt_stop)
1391 return NULL;
1392
1393 if (fcport->se_sess) {
1394 if (!kref_get_unless_zero(&sess->sess_kref)) {
1395 ql_dbg(ql_dbg_disc, vha, 0x20f6,
1396 "%s: kref_get_unless_zero failed for %8phC\n",
1397 __func__, sess->port_name);
1398 return NULL;
1399 }
1400 return fcport;
1401 }
1402 sess->tgt = vha->vha_tgt.qla_tgt;
1403 sess->local = local;
1404
1405 /*
1406 * Under normal circumstances we want to logout from firmware when
1407 * session eventually ends and release corresponding nport handle.
1408 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
1409 * code will adjust these flags as necessary.
1410 */
1411 sess->logout_on_delete = 1;
1412 sess->keep_nport_handle = 0;
1413 sess->logout_completed = 0;
1414
1415 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1416 &fcport->port_name[0], sess) < 0) {
1417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
1418 "(%d) %8phC check_initiator_node_acl failed\n",
1419 vha->vp_idx, fcport->port_name);
1420 return NULL;
1421 } else {
1422 kref_init(&fcport->sess_kref);
1423 /*
1424 * Take an extra reference to ->sess_kref here to handle
1425 * fc_port access across ->tgt.sess_lock reaquire.
1426 */
1427 if (!kref_get_unless_zero(&sess->sess_kref)) {
1428 ql_dbg(ql_dbg_disc, vha, 0x20f7,
1429 "%s: kref_get_unless_zero failed for %8phC\n",
1430 __func__, sess->port_name);
1431 return NULL;
1432 }
1433
1434 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1435 if (!IS_SW_RESV_ADDR(sess->d_id))
1436 vha->vha_tgt.qla_tgt->sess_count++;
1437
1438 qlt_do_generation_tick(vha, &sess->generation);
1439 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1440 }
1441
1442 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1443 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1444 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1445 vha->vha_tgt.qla_tgt->sess_count);
1446
1447 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
1448 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1449 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1450 vha->vp_idx, local ? "local " : "", fcport->port_name,
1451 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1452 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
1453
1454 return sess;
1455 }
1456
test_tgt_sess_count(struct qla_tgt * tgt)1457 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1458 {
1459 struct qla_hw_data *ha = tgt->ha;
1460 unsigned long flags;
1461 int res;
1462 /*
1463 * We need to protect against race, when tgt is freed before or
1464 * inside wake_up()
1465 */
1466 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1467 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1468 "tgt %p, sess_count=%d\n",
1469 tgt, tgt->sess_count);
1470 res = (tgt->sess_count == 0);
1471 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1472
1473 return res;
1474 }
1475
1476 /* Called by tcm_qla2xxx configfs code */
qlt_stop_phase1(struct qla_tgt * tgt)1477 int qlt_stop_phase1(struct qla_tgt *tgt)
1478 {
1479 struct scsi_qla_host *vha = tgt->vha;
1480 struct qla_hw_data *ha = tgt->ha;
1481 unsigned long flags;
1482
1483 mutex_lock(&ha->optrom_mutex);
1484 mutex_lock(&qla_tgt_mutex);
1485
1486 if (tgt->tgt_stop || tgt->tgt_stopped) {
1487 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1488 "Already in tgt->tgt_stop or tgt_stopped state\n");
1489 mutex_unlock(&qla_tgt_mutex);
1490 mutex_unlock(&ha->optrom_mutex);
1491 return -EPERM;
1492 }
1493
1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1495 vha->host_no, vha);
1496 /*
1497 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1498 * Lock is needed, because we still can get an incoming packet.
1499 */
1500 mutex_lock(&vha->vha_tgt.tgt_mutex);
1501 tgt->tgt_stop = 1;
1502 qlt_clear_tgt_db(tgt);
1503 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1504 mutex_unlock(&qla_tgt_mutex);
1505
1506 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1507 "Waiting for sess works (tgt %p)", tgt);
1508 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1509 do {
1510 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1511 flush_work(&tgt->sess_work);
1512 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1513 } while (!list_empty(&tgt->sess_works_list));
1514 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1515
1516 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1517 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
1518
1519 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1520
1521 /* Big hammer */
1522 if (!ha->flags.host_shutting_down &&
1523 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
1524 qlt_disable_vha(vha);
1525
1526 /* Wait for sessions to clear out (just in case) */
1527 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
1528 mutex_unlock(&ha->optrom_mutex);
1529
1530 return 0;
1531 }
1532 EXPORT_SYMBOL(qlt_stop_phase1);
1533
1534 /* Called by tcm_qla2xxx configfs code */
qlt_stop_phase2(struct qla_tgt * tgt)1535 void qlt_stop_phase2(struct qla_tgt *tgt)
1536 {
1537 scsi_qla_host_t *vha = tgt->vha;
1538
1539 if (tgt->tgt_stopped) {
1540 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
1541 "Already in tgt->tgt_stopped state\n");
1542 dump_stack();
1543 return;
1544 }
1545 if (!tgt->tgt_stop) {
1546 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1547 "%s: phase1 stop is not completed\n", __func__);
1548 dump_stack();
1549 return;
1550 }
1551
1552 mutex_lock(&tgt->ha->optrom_mutex);
1553 mutex_lock(&vha->vha_tgt.tgt_mutex);
1554 tgt->tgt_stop = 0;
1555 tgt->tgt_stopped = 1;
1556 mutex_unlock(&vha->vha_tgt.tgt_mutex);
1557 mutex_unlock(&tgt->ha->optrom_mutex);
1558
1559 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
1560 tgt);
1561
1562 switch (vha->qlini_mode) {
1563 case QLA2XXX_INI_MODE_EXCLUSIVE:
1564 vha->flags.online = 1;
1565 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1566 break;
1567 default:
1568 break;
1569 }
1570 }
1571 EXPORT_SYMBOL(qlt_stop_phase2);
1572
1573 /* Called from qlt_remove_target() -> qla2x00_remove_one() */
qlt_release(struct qla_tgt * tgt)1574 static void qlt_release(struct qla_tgt *tgt)
1575 {
1576 scsi_qla_host_t *vha = tgt->vha;
1577 void *node;
1578 u64 key = 0;
1579 u16 i;
1580 struct qla_qpair_hint *h;
1581 struct qla_hw_data *ha = vha->hw;
1582
1583 if (!tgt->tgt_stop && !tgt->tgt_stopped)
1584 qlt_stop_phase1(tgt);
1585
1586 if (!tgt->tgt_stopped)
1587 qlt_stop_phase2(tgt);
1588
1589 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1590 unsigned long flags;
1591
1592 h = &tgt->qphints[i];
1593 if (h->qpair) {
1594 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1595 list_del(&h->hint_elem);
1596 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1597 h->qpair = NULL;
1598 }
1599 }
1600 kfree(tgt->qphints);
1601 mutex_lock(&qla_tgt_mutex);
1602 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1603 mutex_unlock(&qla_tgt_mutex);
1604
1605 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1606 btree_remove64(&tgt->lun_qpair_map, key);
1607
1608 btree_destroy64(&tgt->lun_qpair_map);
1609
1610 if (vha->vp_idx)
1611 if (ha->tgt.tgt_ops &&
1612 ha->tgt.tgt_ops->remove_target &&
1613 vha->vha_tgt.target_lport_ptr)
1614 ha->tgt.tgt_ops->remove_target(vha);
1615
1616 vha->vha_tgt.qla_tgt = NULL;
1617
1618 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
1619 "Release of tgt %p finished\n", tgt);
1620
1621 kfree(tgt);
1622 }
1623
1624 /* ha->hardware_lock supposed to be held on entry */
qlt_sched_sess_work(struct qla_tgt * tgt,int type,const void * param,unsigned int param_size)1625 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1626 const void *param, unsigned int param_size)
1627 {
1628 struct qla_tgt_sess_work_param *prm;
1629 unsigned long flags;
1630
1631 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1632 if (!prm) {
1633 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1634 "qla_target(%d): Unable to create session "
1635 "work, command will be refused", 0);
1636 return -ENOMEM;
1637 }
1638
1639 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1640 "Scheduling work (type %d, prm %p)"
1641 " to find session for param %p (size %d, tgt %p)\n",
1642 type, prm, param, param_size, tgt);
1643
1644 prm->type = type;
1645 memcpy(&prm->tm_iocb, param, param_size);
1646
1647 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1648 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1649 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1650
1651 schedule_work(&tgt->sess_work);
1652
1653 return 0;
1654 }
1655
1656 /*
1657 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1658 */
qlt_send_notify_ack(struct qla_qpair * qpair,struct imm_ntfy_from_isp * ntfy,uint32_t add_flags,uint16_t resp_code,int resp_code_valid,uint16_t srr_flags,uint16_t srr_reject_code,uint8_t srr_explan)1659 static void qlt_send_notify_ack(struct qla_qpair *qpair,
1660 struct imm_ntfy_from_isp *ntfy,
1661 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1662 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1663 {
1664 struct scsi_qla_host *vha = qpair->vha;
1665 struct qla_hw_data *ha = vha->hw;
1666 request_t *pkt;
1667 struct nack_to_isp *nack;
1668
1669 if (!ha->flags.fw_started)
1670 return;
1671
1672 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1673
1674 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
1675 if (!pkt) {
1676 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1677 "qla_target(%d): %s failed: unable to allocate "
1678 "request packet\n", vha->vp_idx, __func__);
1679 return;
1680 }
1681
1682 if (vha->vha_tgt.qla_tgt != NULL)
1683 vha->vha_tgt.qla_tgt->notify_ack_expected++;
1684
1685 pkt->entry_type = NOTIFY_ACK_TYPE;
1686 pkt->entry_count = 1;
1687
1688 nack = (struct nack_to_isp *)pkt;
1689 nack->ox_id = ntfy->ox_id;
1690
1691 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
1692 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1693 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1694 nack->u.isp24.flags = ntfy->u.isp24.flags &
1695 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
1696 }
1697 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1698 nack->u.isp24.status = ntfy->u.isp24.status;
1699 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
1700 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
1701 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1702 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1703 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1704 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1705 nack->u.isp24.srr_reject_code = srr_reject_code;
1706 nack->u.isp24.srr_reject_code_expl = srr_explan;
1707 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1708
1709 /* TODO qualify this with EDIF enable */
1710 if (ntfy->u.isp24.status_subcode == ELS_PLOGI &&
1711 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) {
1712 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP);
1713 }
1714
1715 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1716 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1717 vha->vp_idx, nack->u.isp24.status);
1718
1719 /* Memory Barrier */
1720 wmb();
1721 qla2x00_start_iocbs(vha, qpair->req);
1722 }
1723
qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd * mcmd)1724 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd)
1725 {
1726 struct scsi_qla_host *vha = mcmd->vha;
1727 struct qla_hw_data *ha = vha->hw;
1728 struct abts_resp_to_24xx *resp;
1729 __le32 f_ctl;
1730 uint32_t h;
1731 uint8_t *p;
1732 int rc;
1733 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts;
1734 struct qla_qpair *qpair = mcmd->qpair;
1735
1736 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1737 "Sending task mgmt ABTS response (ha=%p, status=%x)\n",
1738 ha, mcmd->fc_tm_rsp);
1739
1740 rc = qlt_check_reserve_free_req(qpair, 1);
1741 if (rc) {
1742 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1743 "qla_target(%d): %s failed: unable to allocate request packet\n",
1744 vha->vp_idx, __func__);
1745 return -EAGAIN;
1746 }
1747
1748 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr;
1749 memset(resp, 0, sizeof(*resp));
1750
1751 h = qlt_make_handle(qpair);
1752 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1753 /*
1754 * CTIO type 7 from the firmware doesn't provide a way to
1755 * know the initiator's LOOP ID, hence we can't find
1756 * the session and, so, the command.
1757 */
1758 return -EAGAIN;
1759 } else {
1760 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd;
1761 }
1762
1763 resp->handle = make_handle(qpair->req->id, h);
1764 resp->entry_type = ABTS_RESP_24XX;
1765 resp->entry_count = 1;
1766 resp->nport_handle = abts->nport_handle;
1767 resp->vp_index = vha->vp_idx;
1768 resp->sof_type = abts->sof_type;
1769 resp->exchange_address = abts->exchange_address;
1770 resp->fcp_hdr_le = abts->fcp_hdr_le;
1771 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1772 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1773 F_CTL_SEQ_INITIATIVE);
1774 p = (uint8_t *)&f_ctl;
1775 resp->fcp_hdr_le.f_ctl[0] = *p++;
1776 resp->fcp_hdr_le.f_ctl[1] = *p++;
1777 resp->fcp_hdr_le.f_ctl[2] = *p;
1778
1779 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1780 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
1781
1782 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1783 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) {
1784 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1785 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1786 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1787 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
1788 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1789 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1790 } else {
1791 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1792 resp->payload.ba_rjt.reason_code =
1793 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1794 /* Other bytes are zero */
1795 }
1796
1797 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1798
1799 /* Memory Barrier */
1800 wmb();
1801 if (qpair->reqq_start_iocbs)
1802 qpair->reqq_start_iocbs(qpair);
1803 else
1804 qla2x00_start_iocbs(vha, qpair->req);
1805
1806 return rc;
1807 }
1808
1809 /*
1810 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1811 */
qlt_24xx_send_abts_resp(struct qla_qpair * qpair,struct abts_recv_from_24xx * abts,uint32_t status,bool ids_reversed)1812 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
1813 struct abts_recv_from_24xx *abts, uint32_t status,
1814 bool ids_reversed)
1815 {
1816 struct scsi_qla_host *vha = qpair->vha;
1817 struct qla_hw_data *ha = vha->hw;
1818 struct abts_resp_to_24xx *resp;
1819 __le32 f_ctl;
1820 uint8_t *p;
1821
1822 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1823 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1824 ha, abts, status);
1825
1826 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1827 NULL);
1828 if (!resp) {
1829 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1830 "qla_target(%d): %s failed: unable to allocate "
1831 "request packet", vha->vp_idx, __func__);
1832 return;
1833 }
1834
1835 resp->entry_type = ABTS_RESP_24XX;
1836 resp->handle = QLA_TGT_SKIP_HANDLE;
1837 resp->entry_count = 1;
1838 resp->nport_handle = abts->nport_handle;
1839 resp->vp_index = vha->vp_idx;
1840 resp->sof_type = abts->sof_type;
1841 resp->exchange_address = abts->exchange_address;
1842 resp->fcp_hdr_le = abts->fcp_hdr_le;
1843 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1844 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1845 F_CTL_SEQ_INITIATIVE);
1846 p = (uint8_t *)&f_ctl;
1847 resp->fcp_hdr_le.f_ctl[0] = *p++;
1848 resp->fcp_hdr_le.f_ctl[1] = *p++;
1849 resp->fcp_hdr_le.f_ctl[2] = *p;
1850 if (ids_reversed) {
1851 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id;
1852 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id;
1853 } else {
1854 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1855 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
1856 }
1857 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1858 if (status == FCP_TMF_CMPL) {
1859 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1860 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1861 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1862 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
1863 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1864 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1865 } else {
1866 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1867 resp->payload.ba_rjt.reason_code =
1868 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1869 /* Other bytes are zero */
1870 }
1871
1872 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1873
1874 /* Memory Barrier */
1875 wmb();
1876 if (qpair->reqq_start_iocbs)
1877 qpair->reqq_start_iocbs(qpair);
1878 else
1879 qla2x00_start_iocbs(vha, qpair->req);
1880 }
1881
1882 /*
1883 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1884 */
qlt_24xx_retry_term_exchange(struct scsi_qla_host * vha,struct qla_qpair * qpair,response_t * pkt,struct qla_tgt_mgmt_cmd * mcmd)1885 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1886 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd)
1887 {
1888 struct ctio7_to_24xx *ctio;
1889 u16 tmp;
1890 struct abts_recv_from_24xx *entry;
1891
1892 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL);
1893 if (ctio == NULL) {
1894 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1895 "qla_target(%d): %s failed: unable to allocate "
1896 "request packet\n", vha->vp_idx, __func__);
1897 return;
1898 }
1899
1900 if (mcmd)
1901 /* abts from remote port */
1902 entry = &mcmd->orig_iocb.abts;
1903 else
1904 /* abts from this driver. */
1905 entry = (struct abts_recv_from_24xx *)pkt;
1906
1907 /*
1908 * We've got on entrance firmware's response on by us generated
1909 * ABTS response. So, in it ID fields are reversed.
1910 */
1911
1912 ctio->entry_type = CTIO_TYPE7;
1913 ctio->entry_count = 1;
1914 ctio->nport_handle = entry->nport_handle;
1915 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1916 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
1917 ctio->vp_index = vha->vp_idx;
1918 ctio->exchange_addr = entry->exchange_addr_to_abort;
1919 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
1920
1921 if (mcmd) {
1922 ctio->initiator_id = entry->fcp_hdr_le.s_id;
1923
1924 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID)
1925 tmp |= (mcmd->abort_io_attr << 9);
1926 else if (qpair->retry_term_cnt & 1)
1927 tmp |= (0x4 << 9);
1928 } else {
1929 ctio->initiator_id = entry->fcp_hdr_le.d_id;
1930
1931 if (qpair->retry_term_cnt & 1)
1932 tmp |= (0x4 << 9);
1933 }
1934 ctio->u.status1.flags = cpu_to_le16(tmp);
1935 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1936
1937 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1938 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n",
1939 le16_to_cpu(ctio->u.status1.flags),
1940 le16_to_cpu(ctio->u.status1.ox_id),
1941 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0);
1942
1943 /* Memory Barrier */
1944 wmb();
1945 if (qpair->reqq_start_iocbs)
1946 qpair->reqq_start_iocbs(qpair);
1947 else
1948 qla2x00_start_iocbs(vha, qpair->req);
1949
1950 if (mcmd)
1951 qlt_build_abts_resp_iocb(mcmd);
1952 else
1953 qlt_24xx_send_abts_resp(qpair,
1954 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true);
1955
1956 }
1957
1958 /* drop cmds for the given lun
1959 * XXX only looks for cmds on the port through which lun reset was recieved
1960 * XXX does not go through the list of other port (which may have cmds
1961 * for the same lun)
1962 */
abort_cmds_for_lun(struct scsi_qla_host * vha,u64 lun,be_id_t s_id)1963 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id)
1964 {
1965 struct qla_tgt_sess_op *op;
1966 struct qla_tgt_cmd *cmd;
1967 uint32_t key;
1968 unsigned long flags;
1969
1970 key = sid_to_key(s_id);
1971 spin_lock_irqsave(&vha->cmd_list_lock, flags);
1972 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1973 uint32_t op_key;
1974 u64 op_lun;
1975
1976 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1977 op_lun = scsilun_to_int(
1978 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1979 if (op_key == key && op_lun == lun)
1980 op->aborted = true;
1981 }
1982
1983 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1984 uint32_t cmd_key;
1985 u64 cmd_lun;
1986
1987 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1988 cmd_lun = scsilun_to_int(
1989 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1990 if (cmd_key == key && cmd_lun == lun)
1991 cmd->aborted = 1;
1992 }
1993 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
1994 }
1995
qlt_find_qphint(struct scsi_qla_host * vha,uint64_t unpacked_lun)1996 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha,
1997 uint64_t unpacked_lun)
1998 {
1999 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2000 struct qla_qpair_hint *h = NULL;
2001
2002 if (vha->flags.qpairs_available) {
2003 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun);
2004 if (!h)
2005 h = &tgt->qphints[0];
2006 } else {
2007 h = &tgt->qphints[0];
2008 }
2009
2010 return h;
2011 }
2012
qlt_do_tmr_work(struct work_struct * work)2013 static void qlt_do_tmr_work(struct work_struct *work)
2014 {
2015 struct qla_tgt_mgmt_cmd *mcmd =
2016 container_of(work, struct qla_tgt_mgmt_cmd, work);
2017 struct qla_hw_data *ha = mcmd->vha->hw;
2018 int rc;
2019 uint32_t tag;
2020 unsigned long flags;
2021
2022 switch (mcmd->tmr_func) {
2023 case QLA_TGT_ABTS:
2024 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort);
2025 break;
2026 default:
2027 tag = 0;
2028 break;
2029 }
2030
2031 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun,
2032 mcmd->tmr_func, tag);
2033
2034 if (rc != 0) {
2035 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags);
2036 switch (mcmd->tmr_func) {
2037 case QLA_TGT_ABTS:
2038 mcmd->fc_tm_rsp = FCP_TMF_REJECTED;
2039 qlt_build_abts_resp_iocb(mcmd);
2040 break;
2041 case QLA_TGT_LUN_RESET:
2042 case QLA_TGT_CLEAR_TS:
2043 case QLA_TGT_ABORT_TS:
2044 case QLA_TGT_CLEAR_ACA:
2045 case QLA_TGT_TARGET_RESET:
2046 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio,
2047 qla_sam_status);
2048 break;
2049
2050 case QLA_TGT_ABORT_ALL:
2051 case QLA_TGT_NEXUS_LOSS_SESS:
2052 case QLA_TGT_NEXUS_LOSS:
2053 qlt_send_notify_ack(mcmd->qpair,
2054 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2055 break;
2056 }
2057 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags);
2058
2059 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052,
2060 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2061 mcmd->vha->vp_idx, rc);
2062 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2063 }
2064 }
2065
2066 /* ha->hardware_lock supposed to be held on entry */
__qlt_24xx_handle_abts(struct scsi_qla_host * vha,struct abts_recv_from_24xx * abts,struct fc_port * sess)2067 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2068 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2069 {
2070 struct qla_hw_data *ha = vha->hw;
2071 struct qla_tgt_mgmt_cmd *mcmd;
2072 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
2073 struct qla_tgt_cmd *abort_cmd;
2074
2075 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
2076 "qla_target(%d): task abort (tag=%d)\n",
2077 vha->vp_idx, abts->exchange_addr_to_abort);
2078
2079 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2080 if (mcmd == NULL) {
2081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
2082 "qla_target(%d): %s: Allocation of ABORT cmd failed",
2083 vha->vp_idx, __func__);
2084 return -ENOMEM;
2085 }
2086 memset(mcmd, 0, sizeof(*mcmd));
2087 mcmd->cmd_type = TYPE_TGT_TMCMD;
2088 mcmd->sess = sess;
2089 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
2090 mcmd->reset_count = ha->base_qpair->chip_reset;
2091 mcmd->tmr_func = QLA_TGT_ABTS;
2092 mcmd->qpair = h->qpair;
2093 mcmd->vha = vha;
2094
2095 /*
2096 * LUN is looked up by target-core internally based on the passed
2097 * abts->exchange_addr_to_abort tag.
2098 */
2099 mcmd->se_cmd.cpuid = h->cpuid;
2100
2101 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess,
2102 le32_to_cpu(abts->exchange_addr_to_abort));
2103 if (!abort_cmd) {
2104 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2105 return -EIO;
2106 }
2107 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun;
2108
2109 if (abort_cmd->qpair) {
2110 mcmd->qpair = abort_cmd->qpair;
2111 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid;
2112 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr;
2113 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID;
2114 }
2115
2116 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
2117 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work);
2118
2119 return 0;
2120 }
2121
2122 /*
2123 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2124 */
qlt_24xx_handle_abts(struct scsi_qla_host * vha,struct abts_recv_from_24xx * abts)2125 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2126 struct abts_recv_from_24xx *abts)
2127 {
2128 struct qla_hw_data *ha = vha->hw;
2129 struct fc_port *sess;
2130 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort);
2131 be_id_t s_id;
2132 int rc;
2133 unsigned long flags;
2134
2135 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
2136 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
2137 "qla_target(%d): ABTS: Abort Sequence not "
2138 "supported\n", vha->vp_idx);
2139 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2140 false);
2141 return;
2142 }
2143
2144 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2145 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2146 "qla_target(%d): ABTS: Unknown Exchange "
2147 "Address received\n", vha->vp_idx);
2148 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2149 false);
2150 return;
2151 }
2152
2153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2154 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2155 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain,
2156 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag,
2157 le32_to_cpu(abts->fcp_hdr_le.parameter));
2158
2159 s_id = le_id_to_be(abts->fcp_hdr_le.s_id);
2160
2161 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2162 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2163 if (!sess) {
2164 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2165 "qla_target(%d): task abort for non-existent session\n",
2166 vha->vp_idx);
2167 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2168
2169 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2170 false);
2171 return;
2172 }
2173 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2174
2175
2176 if (sess->deleted) {
2177 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2178 false);
2179 return;
2180 }
2181
2182 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2183 if (rc != 0) {
2184 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2185 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2186 vha->vp_idx, rc);
2187 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2188 false);
2189 return;
2190 }
2191 }
2192
2193 /*
2194 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2195 */
qlt_24xx_send_task_mgmt_ctio(struct qla_qpair * qpair,struct qla_tgt_mgmt_cmd * mcmd,uint32_t resp_code)2196 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2197 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2198 {
2199 struct scsi_qla_host *ha = mcmd->vha;
2200 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2201 struct ctio7_to_24xx *ctio;
2202 uint16_t temp;
2203
2204 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2205 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2206 ha, atio, resp_code);
2207
2208
2209 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2210 if (ctio == NULL) {
2211 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2212 "qla_target(%d): %s failed: unable to allocate "
2213 "request packet\n", ha->vp_idx, __func__);
2214 return;
2215 }
2216
2217 ctio->entry_type = CTIO_TYPE7;
2218 ctio->entry_count = 1;
2219 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2220 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id);
2221 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2222 ctio->vp_index = ha->vp_idx;
2223 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2224 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2225 temp = (atio->u.isp24.attr << 9)|
2226 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2227 ctio->u.status1.flags = cpu_to_le16(temp);
2228 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2229 ctio->u.status1.ox_id = cpu_to_le16(temp);
2230 ctio->u.status1.scsi_status =
2231 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2232 ctio->u.status1.response_len = cpu_to_le16(8);
2233 ctio->u.status1.sense_data[0] = resp_code;
2234
2235 /* Memory Barrier */
2236 wmb();
2237 if (qpair->reqq_start_iocbs)
2238 qpair->reqq_start_iocbs(qpair);
2239 else
2240 qla2x00_start_iocbs(ha, qpair->req);
2241 }
2242
qlt_free_mcmd(struct qla_tgt_mgmt_cmd * mcmd)2243 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2244 {
2245 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2246 }
2247 EXPORT_SYMBOL(qlt_free_mcmd);
2248
2249 /*
2250 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2251 * reacquire
2252 */
qlt_send_resp_ctio(struct qla_qpair * qpair,struct qla_tgt_cmd * cmd,uint8_t scsi_status,uint8_t sense_key,uint8_t asc,uint8_t ascq)2253 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
2254 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2255 {
2256 struct atio_from_isp *atio = &cmd->atio;
2257 struct ctio7_to_24xx *ctio;
2258 uint16_t temp;
2259 struct scsi_qla_host *vha = cmd->vha;
2260
2261 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2262 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2263 "sense_key=%02x, asc=%02x, ascq=%02x",
2264 vha, atio, scsi_status, sense_key, asc, ascq);
2265
2266 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2267 if (!ctio) {
2268 ql_dbg(ql_dbg_async, vha, 0x3067,
2269 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2270 vha->host_no, __func__);
2271 goto out;
2272 }
2273
2274 ctio->entry_type = CTIO_TYPE7;
2275 ctio->entry_count = 1;
2276 ctio->handle = QLA_TGT_SKIP_HANDLE;
2277 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id);
2278 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2279 ctio->vp_index = vha->vp_idx;
2280 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2281 ctio->exchange_addr = atio->u.isp24.exchange_addr;
2282 temp = (atio->u.isp24.attr << 9) |
2283 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2284 ctio->u.status1.flags = cpu_to_le16(temp);
2285 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2286 ctio->u.status1.ox_id = cpu_to_le16(temp);
2287 ctio->u.status1.scsi_status =
2288 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2289 ctio->u.status1.response_len = cpu_to_le16(18);
2290 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2291
2292 if (ctio->u.status1.residual != 0)
2293 ctio->u.status1.scsi_status |=
2294 cpu_to_le16(SS_RESIDUAL_UNDER);
2295
2296 /* Fixed format sense data. */
2297 ctio->u.status1.sense_data[0] = 0x70;
2298 ctio->u.status1.sense_data[2] = sense_key;
2299 /* Additional sense length */
2300 ctio->u.status1.sense_data[7] = 0xa;
2301 /* ASC and ASCQ */
2302 ctio->u.status1.sense_data[12] = asc;
2303 ctio->u.status1.sense_data[13] = ascq;
2304
2305 /* Memory Barrier */
2306 wmb();
2307
2308 if (qpair->reqq_start_iocbs)
2309 qpair->reqq_start_iocbs(qpair);
2310 else
2311 qla2x00_start_iocbs(vha, qpair->req);
2312
2313 out:
2314 return;
2315 }
2316
2317 /* callback from target fabric module code */
qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd * mcmd)2318 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2319 {
2320 struct scsi_qla_host *vha = mcmd->sess->vha;
2321 struct qla_hw_data *ha = vha->hw;
2322 unsigned long flags;
2323 struct qla_qpair *qpair = mcmd->qpair;
2324 bool free_mcmd = true;
2325
2326 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2327 "TM response mcmd (%p) status %#x state %#x",
2328 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2329
2330 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2331
2332 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
2333 /*
2334 * Either the port is not online or this request was from
2335 * previous life, just abort the processing.
2336 */
2337 ql_dbg(ql_dbg_async, vha, 0xe100,
2338 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2339 vha->flags.online, qla2x00_reset_active(vha),
2340 mcmd->reset_count, qpair->chip_reset);
2341 ha->tgt.tgt_ops->free_mcmd(mcmd);
2342 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2343 return;
2344 }
2345
2346 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2347 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) {
2348 case ELS_LOGO:
2349 case ELS_PRLO:
2350 case ELS_TPRLO:
2351 ql_dbg(ql_dbg_disc, vha, 0x2106,
2352 "TM response logo %8phC status %#x state %#x",
2353 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2354 mcmd->flags);
2355 qlt_schedule_sess_for_deletion(mcmd->sess);
2356 break;
2357 default:
2358 qlt_send_notify_ack(vha->hw->base_qpair,
2359 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2360 break;
2361 }
2362 } else {
2363 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) {
2364 qlt_build_abts_resp_iocb(mcmd);
2365 free_mcmd = false;
2366 } else
2367 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2368 mcmd->fc_tm_rsp);
2369 }
2370 /*
2371 * Make the callback for ->free_mcmd() to queue_work() and invoke
2372 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2373 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2374 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2375 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2376 * qlt_xmit_tm_rsp() returns here..
2377 */
2378 if (free_mcmd)
2379 ha->tgt.tgt_ops->free_mcmd(mcmd);
2380
2381 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2382 }
2383 EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2384
2385 /* No locks */
qlt_pci_map_calc_cnt(struct qla_tgt_prm * prm)2386 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2387 {
2388 struct qla_tgt_cmd *cmd = prm->cmd;
2389
2390 BUG_ON(cmd->sg_cnt == 0);
2391
2392 prm->sg = (struct scatterlist *)cmd->sg;
2393 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg,
2394 cmd->sg_cnt, cmd->dma_data_direction);
2395 if (unlikely(prm->seg_cnt == 0))
2396 goto out_err;
2397
2398 prm->cmd->sg_mapped = 1;
2399
2400 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2401 /*
2402 * If greater than four sg entries then we need to allocate
2403 * the continuation entries
2404 */
2405 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
2406 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2407 QLA_TGT_DATASEGS_PER_CMD_24XX,
2408 QLA_TGT_DATASEGS_PER_CONT_24XX);
2409 } else {
2410 /* DIF */
2411 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2412 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2413 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2414 prm->tot_dsds = prm->seg_cnt;
2415 } else
2416 prm->tot_dsds = prm->seg_cnt;
2417
2418 if (cmd->prot_sg_cnt) {
2419 prm->prot_sg = cmd->prot_sg;
2420 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev,
2421 cmd->prot_sg, cmd->prot_sg_cnt,
2422 cmd->dma_data_direction);
2423 if (unlikely(prm->prot_seg_cnt == 0))
2424 goto out_err;
2425
2426 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2427 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2428 /* Dif Bundling not support here */
2429 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2430 cmd->blk_sz);
2431 prm->tot_dsds += prm->prot_seg_cnt;
2432 } else
2433 prm->tot_dsds += prm->prot_seg_cnt;
2434 }
2435 }
2436
2437 return 0;
2438
2439 out_err:
2440 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2441 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2442 0, prm->cmd->sg_cnt);
2443 return -1;
2444 }
2445
qlt_unmap_sg(struct scsi_qla_host * vha,struct qla_tgt_cmd * cmd)2446 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2447 {
2448 struct qla_hw_data *ha;
2449 struct qla_qpair *qpair;
2450
2451 if (!cmd->sg_mapped)
2452 return;
2453
2454 qpair = cmd->qpair;
2455
2456 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt,
2457 cmd->dma_data_direction);
2458 cmd->sg_mapped = 0;
2459
2460 if (cmd->prot_sg_cnt)
2461 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt,
2462 cmd->dma_data_direction);
2463
2464 if (!cmd->ctx)
2465 return;
2466 ha = vha->hw;
2467 if (cmd->ctx_dsd_alloced)
2468 qla2x00_clean_dsd_pool(ha, cmd->ctx);
2469
2470 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2471 }
2472
qlt_check_reserve_free_req(struct qla_qpair * qpair,uint32_t req_cnt)2473 static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2474 uint32_t req_cnt)
2475 {
2476 uint32_t cnt;
2477 struct req_que *req = qpair->req;
2478
2479 if (req->cnt < (req_cnt + 2)) {
2480 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2481 rd_reg_dword_relaxed(req->req_q_out));
2482
2483 if (req->ring_index < cnt)
2484 req->cnt = cnt - req->ring_index;
2485 else
2486 req->cnt = req->length - (req->ring_index - cnt);
2487
2488 if (unlikely(req->cnt < (req_cnt + 2)))
2489 return -EAGAIN;
2490 }
2491
2492 req->cnt -= req_cnt;
2493
2494 return 0;
2495 }
2496
2497 /*
2498 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2499 */
qlt_get_req_pkt(struct req_que * req)2500 static inline void *qlt_get_req_pkt(struct req_que *req)
2501 {
2502 /* Adjust ring index. */
2503 req->ring_index++;
2504 if (req->ring_index == req->length) {
2505 req->ring_index = 0;
2506 req->ring_ptr = req->ring;
2507 } else {
2508 req->ring_ptr++;
2509 }
2510 return (cont_entry_t *)req->ring_ptr;
2511 }
2512
2513 /* ha->hardware_lock supposed to be held on entry */
qlt_make_handle(struct qla_qpair * qpair)2514 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2515 {
2516 uint32_t h;
2517 int index;
2518 uint8_t found = 0;
2519 struct req_que *req = qpair->req;
2520
2521 h = req->current_outstanding_cmd;
2522
2523 for (index = 1; index < req->num_outstanding_cmds; index++) {
2524 h++;
2525 if (h == req->num_outstanding_cmds)
2526 h = 1;
2527
2528 if (h == QLA_TGT_SKIP_HANDLE)
2529 continue;
2530
2531 if (!req->outstanding_cmds[h]) {
2532 found = 1;
2533 break;
2534 }
2535 }
2536
2537 if (found) {
2538 req->current_outstanding_cmd = h;
2539 } else {
2540 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2541 "qla_target(%d): Ran out of empty cmd slots\n",
2542 qpair->vha->vp_idx);
2543 h = QLA_TGT_NULL_HANDLE;
2544 }
2545
2546 return h;
2547 }
2548
2549 /* ha->hardware_lock supposed to be held on entry */
qlt_24xx_build_ctio_pkt(struct qla_qpair * qpair,struct qla_tgt_prm * prm)2550 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2551 struct qla_tgt_prm *prm)
2552 {
2553 uint32_t h;
2554 struct ctio7_to_24xx *pkt;
2555 struct atio_from_isp *atio = &prm->cmd->atio;
2556 uint16_t temp;
2557 struct qla_tgt_cmd *cmd = prm->cmd;
2558
2559 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2560 prm->pkt = pkt;
2561 memset(pkt, 0, sizeof(*pkt));
2562
2563 pkt->entry_type = CTIO_TYPE7;
2564 pkt->entry_count = (uint8_t)prm->req_cnt;
2565 pkt->vp_index = prm->cmd->vp_idx;
2566
2567 h = qlt_make_handle(qpair);
2568 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2569 /*
2570 * CTIO type 7 from the firmware doesn't provide a way to
2571 * know the initiator's LOOP ID, hence we can't find
2572 * the session and, so, the command.
2573 */
2574 return -EAGAIN;
2575 } else
2576 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2577
2578 pkt->handle = make_handle(qpair->req->id, h);
2579 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2580 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
2581 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2582 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2583 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2584 temp = atio->u.isp24.attr << 9;
2585 pkt->u.status0.flags |= cpu_to_le16(temp);
2586 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2587 pkt->u.status0.ox_id = cpu_to_le16(temp);
2588 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2589
2590 if (cmd->edif) {
2591 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2592 prm->cmd->sess->edif.rx_bytes += cmd->bufflen;
2593 if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2594 prm->cmd->sess->edif.tx_bytes += cmd->bufflen;
2595
2596 pkt->u.status0.edif_flags |= EF_EN_EDIF;
2597 }
2598
2599 return 0;
2600 }
2601
2602 /*
2603 * ha->hardware_lock supposed to be held on entry. We have already made sure
2604 * that there is sufficient amount of request entries to not drop it.
2605 */
qlt_load_cont_data_segments(struct qla_tgt_prm * prm)2606 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2607 {
2608 int cnt;
2609 struct dsd64 *cur_dsd;
2610
2611 /* Build continuation packets */
2612 while (prm->seg_cnt > 0) {
2613 cont_a64_entry_t *cont_pkt64 =
2614 (cont_a64_entry_t *)qlt_get_req_pkt(
2615 prm->cmd->qpair->req);
2616
2617 /*
2618 * Make sure that from cont_pkt64 none of
2619 * 64-bit specific fields used for 32-bit
2620 * addressing. Cast to (cont_entry_t *) for
2621 * that.
2622 */
2623
2624 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2625
2626 cont_pkt64->entry_count = 1;
2627 cont_pkt64->sys_define = 0;
2628
2629 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2630 cur_dsd = cont_pkt64->dsd;
2631
2632 /* Load continuation entry data segments */
2633 for (cnt = 0;
2634 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2635 cnt++, prm->seg_cnt--) {
2636 append_dsd64(&cur_dsd, prm->sg);
2637 prm->sg = sg_next(prm->sg);
2638 }
2639 }
2640 }
2641
2642 /*
2643 * ha->hardware_lock supposed to be held on entry. We have already made sure
2644 * that there is sufficient amount of request entries to not drop it.
2645 */
qlt_load_data_segments(struct qla_tgt_prm * prm)2646 static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2647 {
2648 int cnt;
2649 struct dsd64 *cur_dsd;
2650 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2651
2652 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2653
2654 /* Setup packet address segment pointer */
2655 cur_dsd = &pkt24->u.status0.dsd;
2656
2657 /* Set total data segment count */
2658 if (prm->seg_cnt)
2659 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2660
2661 if (prm->seg_cnt == 0) {
2662 /* No data transfer */
2663 cur_dsd->address = 0;
2664 cur_dsd->length = 0;
2665 return;
2666 }
2667
2668 /* If scatter gather */
2669
2670 /* Load command entry data segments */
2671 for (cnt = 0;
2672 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2673 cnt++, prm->seg_cnt--) {
2674 append_dsd64(&cur_dsd, prm->sg);
2675 prm->sg = sg_next(prm->sg);
2676 }
2677
2678 qlt_load_cont_data_segments(prm);
2679 }
2680
qlt_has_data(struct qla_tgt_cmd * cmd)2681 static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2682 {
2683 return cmd->bufflen > 0;
2684 }
2685
qlt_print_dif_err(struct qla_tgt_prm * prm)2686 static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2687 {
2688 struct qla_tgt_cmd *cmd;
2689 struct scsi_qla_host *vha;
2690
2691 /* asc 0x10=dif error */
2692 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2693 cmd = prm->cmd;
2694 vha = cmd->vha;
2695 /* ASCQ */
2696 switch (prm->sense_buffer[13]) {
2697 case 1:
2698 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
2699 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2700 "se_cmd=%p tag[%x]",
2701 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2702 cmd->atio.u.isp24.exchange_addr);
2703 break;
2704 case 2:
2705 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
2706 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2707 "se_cmd=%p tag[%x]",
2708 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2709 cmd->atio.u.isp24.exchange_addr);
2710 break;
2711 case 3:
2712 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
2713 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2714 "se_cmd=%p tag[%x]",
2715 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2716 cmd->atio.u.isp24.exchange_addr);
2717 break;
2718 default:
2719 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
2720 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2721 "se_cmd=%p tag[%x]",
2722 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2723 cmd->atio.u.isp24.exchange_addr);
2724 break;
2725 }
2726 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
2727 }
2728 }
2729
2730 /*
2731 * Called without ha->hardware_lock held
2732 */
qlt_pre_xmit_response(struct qla_tgt_cmd * cmd,struct qla_tgt_prm * prm,int xmit_type,uint8_t scsi_status,uint32_t * full_req_cnt)2733 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2734 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2735 uint32_t *full_req_cnt)
2736 {
2737 struct se_cmd *se_cmd = &cmd->se_cmd;
2738 struct qla_qpair *qpair = cmd->qpair;
2739
2740 prm->cmd = cmd;
2741 prm->tgt = cmd->tgt;
2742 prm->pkt = NULL;
2743 prm->rq_result = scsi_status;
2744 prm->sense_buffer = &cmd->sense_buffer[0];
2745 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2746 prm->sg = NULL;
2747 prm->seg_cnt = -1;
2748 prm->req_cnt = 1;
2749 prm->residual = 0;
2750 prm->add_status_pkt = 0;
2751 prm->prot_sg = NULL;
2752 prm->prot_seg_cnt = 0;
2753 prm->tot_dsds = 0;
2754
2755 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2756 if (qlt_pci_map_calc_cnt(prm) != 0)
2757 return -EAGAIN;
2758 }
2759
2760 *full_req_cnt = prm->req_cnt;
2761
2762 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2763 prm->residual = se_cmd->residual_count;
2764 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
2765 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2766 prm->residual, se_cmd->tag,
2767 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2768 cmd->bufflen, prm->rq_result);
2769 prm->rq_result |= SS_RESIDUAL_UNDER;
2770 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2771 prm->residual = se_cmd->residual_count;
2772 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
2773 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2774 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2775 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2776 prm->rq_result |= SS_RESIDUAL_OVER;
2777 }
2778
2779 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2780 /*
2781 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2782 * ignored in *xmit_response() below
2783 */
2784 if (qlt_has_data(cmd)) {
2785 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2786 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2787 (prm->rq_result != 0))) {
2788 prm->add_status_pkt = 1;
2789 (*full_req_cnt)++;
2790 }
2791 }
2792 }
2793
2794 return 0;
2795 }
2796
qlt_need_explicit_conf(struct qla_tgt_cmd * cmd,int sending_sense)2797 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2798 int sending_sense)
2799 {
2800 if (cmd->qpair->enable_class_2)
2801 return 0;
2802
2803 if (sending_sense)
2804 return cmd->conf_compl_supported;
2805 else
2806 return cmd->qpair->enable_explicit_conf &&
2807 cmd->conf_compl_supported;
2808 }
2809
qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx * ctio,struct qla_tgt_prm * prm)2810 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2811 struct qla_tgt_prm *prm)
2812 {
2813 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2814 (uint32_t)sizeof(ctio->u.status1.sense_data));
2815 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2816 if (qlt_need_explicit_conf(prm->cmd, 0)) {
2817 ctio->u.status0.flags |= cpu_to_le16(
2818 CTIO7_FLAGS_EXPLICIT_CONFORM |
2819 CTIO7_FLAGS_CONFORM_REQ);
2820 }
2821 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2822 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2823 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2824 int i;
2825
2826 if (qlt_need_explicit_conf(prm->cmd, 1)) {
2827 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2828 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2829 "Skipping EXPLICIT_CONFORM and "
2830 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2831 "non GOOD status\n");
2832 goto skip_explict_conf;
2833 }
2834 ctio->u.status1.flags |= cpu_to_le16(
2835 CTIO7_FLAGS_EXPLICIT_CONFORM |
2836 CTIO7_FLAGS_CONFORM_REQ);
2837 }
2838 skip_explict_conf:
2839 ctio->u.status1.flags &=
2840 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2841 ctio->u.status1.flags |=
2842 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2843 ctio->u.status1.scsi_status |=
2844 cpu_to_le16(SS_SENSE_LEN_VALID);
2845 ctio->u.status1.sense_length =
2846 cpu_to_le16(prm->sense_buffer_len);
2847 for (i = 0; i < prm->sense_buffer_len/4; i++) {
2848 uint32_t v;
2849
2850 v = get_unaligned_be32(
2851 &((uint32_t *)prm->sense_buffer)[i]);
2852 put_unaligned_le32(v,
2853 &((uint32_t *)ctio->u.status1.sense_data)[i]);
2854 }
2855 qlt_print_dif_err(prm);
2856
2857 } else {
2858 ctio->u.status1.flags &=
2859 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2860 ctio->u.status1.flags |=
2861 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2862 ctio->u.status1.sense_length = 0;
2863 memset(ctio->u.status1.sense_data, 0,
2864 sizeof(ctio->u.status1.sense_data));
2865 }
2866
2867 /* Sense with len > 24, is it possible ??? */
2868 }
2869
2870 static inline int
qlt_hba_err_chk_enabled(struct se_cmd * se_cmd)2871 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2872 {
2873 switch (se_cmd->prot_op) {
2874 case TARGET_PROT_DOUT_INSERT:
2875 case TARGET_PROT_DIN_STRIP:
2876 if (ql2xenablehba_err_chk >= 1)
2877 return 1;
2878 break;
2879 case TARGET_PROT_DOUT_PASS:
2880 case TARGET_PROT_DIN_PASS:
2881 if (ql2xenablehba_err_chk >= 2)
2882 return 1;
2883 break;
2884 case TARGET_PROT_DIN_INSERT:
2885 case TARGET_PROT_DOUT_STRIP:
2886 return 1;
2887 default:
2888 break;
2889 }
2890 return 0;
2891 }
2892
2893 static inline int
qla_tgt_ref_mask_check(struct se_cmd * se_cmd)2894 qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2895 {
2896 switch (se_cmd->prot_op) {
2897 case TARGET_PROT_DIN_INSERT:
2898 case TARGET_PROT_DOUT_INSERT:
2899 case TARGET_PROT_DIN_STRIP:
2900 case TARGET_PROT_DOUT_STRIP:
2901 case TARGET_PROT_DIN_PASS:
2902 case TARGET_PROT_DOUT_PASS:
2903 return 1;
2904 default:
2905 return 0;
2906 }
2907 return 0;
2908 }
2909
2910 /*
2911 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
2912 */
2913 static void
qla_tgt_set_dif_tags(struct qla_tgt_cmd * cmd,struct crc_context * ctx,uint16_t * pfw_prot_opts)2914 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2915 uint16_t *pfw_prot_opts)
2916 {
2917 struct se_cmd *se_cmd = &cmd->se_cmd;
2918 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2919 scsi_qla_host_t *vha = cmd->tgt->vha;
2920 struct qla_hw_data *ha = vha->hw;
2921 uint32_t t32 = 0;
2922
2923 /*
2924 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
2925 * have been immplemented by TCM, before AppTag is avail.
2926 * Look for modesense_handlers[]
2927 */
2928 ctx->app_tag = 0;
2929 ctx->app_tag_mask[0] = 0x0;
2930 ctx->app_tag_mask[1] = 0x0;
2931
2932 if (IS_PI_UNINIT_CAPABLE(ha)) {
2933 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2934 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2935 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2936 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2937 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2938 }
2939
2940 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2941
2942 switch (se_cmd->prot_type) {
2943 case TARGET_DIF_TYPE0_PROT:
2944 /*
2945 * No check for ql2xenablehba_err_chk, as it
2946 * would be an I/O error if hba tag generation
2947 * is not done.
2948 */
2949 ctx->ref_tag = cpu_to_le32(lba);
2950 /* enable ALL bytes of the ref tag */
2951 ctx->ref_tag_mask[0] = 0xff;
2952 ctx->ref_tag_mask[1] = 0xff;
2953 ctx->ref_tag_mask[2] = 0xff;
2954 ctx->ref_tag_mask[3] = 0xff;
2955 break;
2956 case TARGET_DIF_TYPE1_PROT:
2957 /*
2958 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2959 * REF tag, and 16 bit app tag.
2960 */
2961 ctx->ref_tag = cpu_to_le32(lba);
2962 if (!qla_tgt_ref_mask_check(se_cmd) ||
2963 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2964 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2965 break;
2966 }
2967 /* enable ALL bytes of the ref tag */
2968 ctx->ref_tag_mask[0] = 0xff;
2969 ctx->ref_tag_mask[1] = 0xff;
2970 ctx->ref_tag_mask[2] = 0xff;
2971 ctx->ref_tag_mask[3] = 0xff;
2972 break;
2973 case TARGET_DIF_TYPE2_PROT:
2974 /*
2975 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2976 * tag has to match LBA in CDB + N
2977 */
2978 ctx->ref_tag = cpu_to_le32(lba);
2979 if (!qla_tgt_ref_mask_check(se_cmd) ||
2980 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2981 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2982 break;
2983 }
2984 /* enable ALL bytes of the ref tag */
2985 ctx->ref_tag_mask[0] = 0xff;
2986 ctx->ref_tag_mask[1] = 0xff;
2987 ctx->ref_tag_mask[2] = 0xff;
2988 ctx->ref_tag_mask[3] = 0xff;
2989 break;
2990 case TARGET_DIF_TYPE3_PROT:
2991 /* For TYPE 3 protection: 16 bit GUARD only */
2992 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2993 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2994 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2995 break;
2996 }
2997 }
2998
2999 static inline int
qlt_build_ctio_crc2_pkt(struct qla_qpair * qpair,struct qla_tgt_prm * prm)3000 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
3001 {
3002 struct dsd64 *cur_dsd;
3003 uint32_t transfer_length = 0;
3004 uint32_t data_bytes;
3005 uint32_t dif_bytes;
3006 uint8_t bundling = 1;
3007 struct crc_context *crc_ctx_pkt = NULL;
3008 struct qla_hw_data *ha;
3009 struct ctio_crc2_to_fw *pkt;
3010 dma_addr_t crc_ctx_dma;
3011 uint16_t fw_prot_opts = 0;
3012 struct qla_tgt_cmd *cmd = prm->cmd;
3013 struct se_cmd *se_cmd = &cmd->se_cmd;
3014 uint32_t h;
3015 struct atio_from_isp *atio = &prm->cmd->atio;
3016 struct qla_tc_param tc;
3017 uint16_t t16;
3018 scsi_qla_host_t *vha = cmd->vha;
3019
3020 ha = vha->hw;
3021
3022 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
3023 prm->pkt = pkt;
3024 memset(pkt, 0, sizeof(*pkt));
3025
3026 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
3027 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
3028 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
3029 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
3030
3031 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
3032 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
3033 bundling = 0;
3034
3035 /* Compute dif len and adjust data len to incude protection */
3036 data_bytes = cmd->bufflen;
3037 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
3038
3039 switch (se_cmd->prot_op) {
3040 case TARGET_PROT_DIN_INSERT:
3041 case TARGET_PROT_DOUT_STRIP:
3042 transfer_length = data_bytes;
3043 if (cmd->prot_sg_cnt)
3044 data_bytes += dif_bytes;
3045 break;
3046 case TARGET_PROT_DIN_STRIP:
3047 case TARGET_PROT_DOUT_INSERT:
3048 case TARGET_PROT_DIN_PASS:
3049 case TARGET_PROT_DOUT_PASS:
3050 transfer_length = data_bytes + dif_bytes;
3051 break;
3052 default:
3053 BUG();
3054 break;
3055 }
3056
3057 if (!qlt_hba_err_chk_enabled(se_cmd))
3058 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
3059 /* HBA error checking enabled */
3060 else if (IS_PI_UNINIT_CAPABLE(ha)) {
3061 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
3062 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
3063 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
3064 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
3065 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
3066 }
3067
3068 switch (se_cmd->prot_op) {
3069 case TARGET_PROT_DIN_INSERT:
3070 case TARGET_PROT_DOUT_INSERT:
3071 fw_prot_opts |= PO_MODE_DIF_INSERT;
3072 break;
3073 case TARGET_PROT_DIN_STRIP:
3074 case TARGET_PROT_DOUT_STRIP:
3075 fw_prot_opts |= PO_MODE_DIF_REMOVE;
3076 break;
3077 case TARGET_PROT_DIN_PASS:
3078 case TARGET_PROT_DOUT_PASS:
3079 fw_prot_opts |= PO_MODE_DIF_PASS;
3080 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
3081 break;
3082 default:/* Normal Request */
3083 fw_prot_opts |= PO_MODE_DIF_PASS;
3084 break;
3085 }
3086
3087 /* ---- PKT ---- */
3088 /* Update entry type to indicate Command Type CRC_2 IOCB */
3089 pkt->entry_type = CTIO_CRC2;
3090 pkt->entry_count = 1;
3091 pkt->vp_index = cmd->vp_idx;
3092
3093 h = qlt_make_handle(qpair);
3094 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
3095 /*
3096 * CTIO type 7 from the firmware doesn't provide a way to
3097 * know the initiator's LOOP ID, hence we can't find
3098 * the session and, so, the command.
3099 */
3100 return -EAGAIN;
3101 } else
3102 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
3103
3104 pkt->handle = make_handle(qpair->req->id, h);
3105 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
3106 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
3107 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3108 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
3109 pkt->exchange_addr = atio->u.isp24.exchange_addr;
3110
3111 /* silence compile warning */
3112 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3113 pkt->ox_id = cpu_to_le16(t16);
3114
3115 t16 = (atio->u.isp24.attr << 9);
3116 pkt->flags |= cpu_to_le16(t16);
3117 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
3118
3119 /* Set transfer direction */
3120 if (cmd->dma_data_direction == DMA_TO_DEVICE)
3121 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
3122 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
3123 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
3124
3125 pkt->dseg_count = cpu_to_le16(prm->tot_dsds);
3126 /* Fibre channel byte count */
3127 pkt->transfer_length = cpu_to_le32(transfer_length);
3128
3129 /* ----- CRC context -------- */
3130
3131 /* Allocate CRC context from global pool */
3132 crc_ctx_pkt = cmd->ctx =
3133 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
3134
3135 if (!crc_ctx_pkt)
3136 goto crc_queuing_error;
3137
3138 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3139 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3140
3141 /* Set handle */
3142 crc_ctx_pkt->handle = pkt->handle;
3143
3144 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
3145
3146 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address);
3147 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW);
3148
3149 if (!bundling) {
3150 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0];
3151 } else {
3152 /*
3153 * Configure Bundling if we need to fetch interlaving
3154 * protection PCI accesses
3155 */
3156 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3157 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3158 crc_ctx_pkt->u.bundling.dseg_count =
3159 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3160 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0];
3161 }
3162
3163 /* Finish the common fields of CRC pkt */
3164 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3165 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3166 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
3167 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
3168
3169 memset((uint8_t *)&tc, 0 , sizeof(tc));
3170 tc.vha = vha;
3171 tc.blk_sz = cmd->blk_sz;
3172 tc.bufflen = cmd->bufflen;
3173 tc.sg = cmd->sg;
3174 tc.prot_sg = cmd->prot_sg;
3175 tc.ctx = crc_ctx_pkt;
3176 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
3177
3178 /* Walks data segments */
3179 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
3180
3181 if (!bundling && prm->prot_seg_cnt) {
3182 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
3183 prm->tot_dsds, &tc))
3184 goto crc_queuing_error;
3185 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
3186 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
3187 goto crc_queuing_error;
3188
3189 if (bundling && prm->prot_seg_cnt) {
3190 /* Walks dif segments */
3191 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
3192
3193 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd;
3194 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
3195 prm->prot_seg_cnt, cmd))
3196 goto crc_queuing_error;
3197 }
3198 return QLA_SUCCESS;
3199
3200 crc_queuing_error:
3201 /* Cleanup will be performed by the caller */
3202 qpair->req->outstanding_cmds[h] = NULL;
3203
3204 return QLA_FUNCTION_FAILED;
3205 }
3206
3207 /*
3208 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3209 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3210 */
qlt_xmit_response(struct qla_tgt_cmd * cmd,int xmit_type,uint8_t scsi_status)3211 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3212 uint8_t scsi_status)
3213 {
3214 struct scsi_qla_host *vha = cmd->vha;
3215 struct qla_qpair *qpair = cmd->qpair;
3216 struct ctio7_to_24xx *pkt;
3217 struct qla_tgt_prm prm;
3218 uint32_t full_req_cnt = 0;
3219 unsigned long flags = 0;
3220 int res;
3221
3222 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3223 (cmd->sess && cmd->sess->deleted)) {
3224 cmd->state = QLA_TGT_STATE_PROCESSED;
3225 return 0;
3226 }
3227
3228 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
3229 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
3230 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3231 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3232 &cmd->se_cmd, qpair->id);
3233
3234 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3235 &full_req_cnt);
3236 if (unlikely(res != 0)) {
3237 return res;
3238 }
3239
3240 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3241
3242 if (xmit_type == QLA_TGT_XMIT_STATUS)
3243 qpair->tgt_counters.core_qla_snd_status++;
3244 else
3245 qpair->tgt_counters.core_qla_que_buf++;
3246
3247 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
3248 /*
3249 * Either the port is not online or this request was from
3250 * previous life, just abort the processing.
3251 */
3252 cmd->state = QLA_TGT_STATE_PROCESSED;
3253 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3254 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3255 vha->flags.online, qla2x00_reset_active(vha),
3256 cmd->reset_count, qpair->chip_reset);
3257 res = 0;
3258 goto out_unmap_unlock;
3259 }
3260
3261 /* Does F/W have an IOCBs for this request */
3262 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
3263 if (unlikely(res))
3264 goto out_unmap_unlock;
3265
3266 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3267 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3268 else
3269 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3270 if (unlikely(res != 0)) {
3271 qpair->req->cnt += full_req_cnt;
3272 goto out_unmap_unlock;
3273 }
3274
3275 pkt = (struct ctio7_to_24xx *)prm.pkt;
3276
3277 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3278 pkt->u.status0.flags |=
3279 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
3280 CTIO7_FLAGS_STATUS_MODE_0);
3281
3282 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3283 qlt_load_data_segments(&prm);
3284
3285 if (prm.add_status_pkt == 0) {
3286 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3287 pkt->u.status0.scsi_status =
3288 cpu_to_le16(prm.rq_result);
3289 if (!cmd->edif)
3290 pkt->u.status0.residual =
3291 cpu_to_le32(prm.residual);
3292
3293 pkt->u.status0.flags |= cpu_to_le16(
3294 CTIO7_FLAGS_SEND_STATUS);
3295 if (qlt_need_explicit_conf(cmd, 0)) {
3296 pkt->u.status0.flags |=
3297 cpu_to_le16(
3298 CTIO7_FLAGS_EXPLICIT_CONFORM |
3299 CTIO7_FLAGS_CONFORM_REQ);
3300 }
3301 }
3302
3303 } else {
3304 /*
3305 * We have already made sure that there is sufficient
3306 * amount of request entries to not drop HW lock in
3307 * req_pkt().
3308 */
3309 struct ctio7_to_24xx *ctio =
3310 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3311 qpair->req);
3312
3313 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
3314 "Building additional status packet 0x%p.\n",
3315 ctio);
3316
3317 /*
3318 * T10Dif: ctio_crc2_to_fw overlay ontop of
3319 * ctio7_to_24xx
3320 */
3321 memcpy(ctio, pkt, sizeof(*ctio));
3322 /* reset back to CTIO7 */
3323 ctio->entry_count = 1;
3324 ctio->entry_type = CTIO_TYPE7;
3325 ctio->dseg_count = 0;
3326 ctio->u.status1.flags &= ~cpu_to_le16(
3327 CTIO7_FLAGS_DATA_IN);
3328
3329 /* Real finish is ctio_m1's finish */
3330 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
3331 pkt->u.status0.flags |= cpu_to_le16(
3332 CTIO7_FLAGS_DONT_RET_CTIO);
3333
3334 /* qlt_24xx_init_ctio_to_isp will correct
3335 * all neccessary fields that's part of CTIO7.
3336 * There should be no residual of CTIO-CRC2 data.
3337 */
3338 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3339 &prm);
3340 }
3341 } else
3342 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3343
3344
3345 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
3346 cmd->cmd_sent_to_fw = 1;
3347 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3348
3349 /* Memory Barrier */
3350 wmb();
3351 if (qpair->reqq_start_iocbs)
3352 qpair->reqq_start_iocbs(qpair);
3353 else
3354 qla2x00_start_iocbs(vha, qpair->req);
3355 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3356
3357 return 0;
3358
3359 out_unmap_unlock:
3360 qlt_unmap_sg(vha, cmd);
3361 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3362
3363 return res;
3364 }
3365 EXPORT_SYMBOL(qlt_xmit_response);
3366
qlt_rdy_to_xfer(struct qla_tgt_cmd * cmd)3367 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3368 {
3369 struct ctio7_to_24xx *pkt;
3370 struct scsi_qla_host *vha = cmd->vha;
3371 struct qla_tgt *tgt = cmd->tgt;
3372 struct qla_tgt_prm prm;
3373 unsigned long flags = 0;
3374 int res = 0;
3375 struct qla_qpair *qpair = cmd->qpair;
3376
3377 memset(&prm, 0, sizeof(prm));
3378 prm.cmd = cmd;
3379 prm.tgt = tgt;
3380 prm.sg = NULL;
3381 prm.req_cnt = 1;
3382
3383 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3384 (cmd->sess && cmd->sess->deleted)) {
3385 /*
3386 * Either the port is not online or this request was from
3387 * previous life, just abort the processing.
3388 */
3389 cmd->aborted = 1;
3390 cmd->write_data_transferred = 0;
3391 cmd->state = QLA_TGT_STATE_DATA_IN;
3392 vha->hw->tgt.tgt_ops->handle_data(cmd);
3393 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3394 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3395 vha->flags.online, qla2x00_reset_active(vha),
3396 cmd->reset_count, qpair->chip_reset);
3397 return 0;
3398 }
3399
3400 /* Calculate number of entries and segments required */
3401 if (qlt_pci_map_calc_cnt(&prm) != 0)
3402 return -EAGAIN;
3403
3404 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3405 /* Does F/W have an IOCBs for this request */
3406 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
3407 if (res != 0)
3408 goto out_unlock_free_unmap;
3409 if (cmd->se_cmd.prot_op)
3410 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
3411 else
3412 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
3413
3414 if (unlikely(res != 0)) {
3415 qpair->req->cnt += prm.req_cnt;
3416 goto out_unlock_free_unmap;
3417 }
3418
3419 pkt = (struct ctio7_to_24xx *)prm.pkt;
3420 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
3421 CTIO7_FLAGS_STATUS_MODE_0);
3422
3423 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3424 qlt_load_data_segments(&prm);
3425
3426 cmd->state = QLA_TGT_STATE_NEED_DATA;
3427 cmd->cmd_sent_to_fw = 1;
3428 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
3429
3430 /* Memory Barrier */
3431 wmb();
3432 if (qpair->reqq_start_iocbs)
3433 qpair->reqq_start_iocbs(qpair);
3434 else
3435 qla2x00_start_iocbs(vha, qpair->req);
3436 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3437
3438 return res;
3439
3440 out_unlock_free_unmap:
3441 qlt_unmap_sg(vha, cmd);
3442 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3443
3444 return res;
3445 }
3446 EXPORT_SYMBOL(qlt_rdy_to_xfer);
3447
3448
3449 /*
3450 * it is assumed either hardware_lock or qpair lock is held.
3451 */
3452 static void
qlt_handle_dif_error(struct qla_qpair * qpair,struct qla_tgt_cmd * cmd,struct ctio_crc_from_fw * sts)3453 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
3454 struct ctio_crc_from_fw *sts)
3455 {
3456 uint8_t *ap = &sts->actual_dif[0];
3457 uint8_t *ep = &sts->expected_dif[0];
3458 uint64_t lba = cmd->se_cmd.t_task_lba;
3459 uint8_t scsi_status, sense_key, asc, ascq;
3460 unsigned long flags;
3461 struct scsi_qla_host *vha = cmd->vha;
3462
3463 cmd->trc_flags |= TRC_DIF_ERR;
3464
3465 cmd->a_guard = get_unaligned_be16(ap + 0);
3466 cmd->a_app_tag = get_unaligned_be16(ap + 2);
3467 cmd->a_ref_tag = get_unaligned_be32(ap + 4);
3468
3469 cmd->e_guard = get_unaligned_be16(ep + 0);
3470 cmd->e_app_tag = get_unaligned_be16(ep + 2);
3471 cmd->e_ref_tag = get_unaligned_be32(ep + 4);
3472
3473 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3474 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
3475
3476 scsi_status = sense_key = asc = ascq = 0;
3477
3478 /* check appl tag */
3479 if (cmd->e_app_tag != cmd->a_app_tag) {
3480 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3481 "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]",
3482 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3483 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3484 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3485 cmd->atio.u.isp24.fcp_hdr.ox_id);
3486
3487 cmd->dif_err_code = DIF_ERR_APP;
3488 scsi_status = SAM_STAT_CHECK_CONDITION;
3489 sense_key = ABORTED_COMMAND;
3490 asc = 0x10;
3491 ascq = 0x2;
3492 }
3493
3494 /* check ref tag */
3495 if (cmd->e_ref_tag != cmd->a_ref_tag) {
3496 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3497 "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] ",
3498 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3499 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3500 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3501 cmd->atio.u.isp24.fcp_hdr.ox_id);
3502
3503 cmd->dif_err_code = DIF_ERR_REF;
3504 scsi_status = SAM_STAT_CHECK_CONDITION;
3505 sense_key = ABORTED_COMMAND;
3506 asc = 0x10;
3507 ascq = 0x3;
3508 goto out;
3509 }
3510
3511 /* check guard */
3512 if (cmd->e_guard != cmd->a_guard) {
3513 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3514 "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]",
3515 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3516 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3517 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3518 cmd->atio.u.isp24.fcp_hdr.ox_id);
3519
3520 cmd->dif_err_code = DIF_ERR_GRD;
3521 scsi_status = SAM_STAT_CHECK_CONDITION;
3522 sense_key = ABORTED_COMMAND;
3523 asc = 0x10;
3524 ascq = 0x1;
3525 }
3526 out:
3527 switch (cmd->state) {
3528 case QLA_TGT_STATE_NEED_DATA:
3529 /* handle_data will load DIF error code */
3530 cmd->state = QLA_TGT_STATE_DATA_IN;
3531 vha->hw->tgt.tgt_ops->handle_data(cmd);
3532 break;
3533 default:
3534 spin_lock_irqsave(&cmd->cmd_lock, flags);
3535 if (cmd->aborted) {
3536 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3537 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3538 break;
3539 }
3540 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3541
3542 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3543 ascq);
3544 /* assume scsi status gets out on the wire.
3545 * Will not wait for completion.
3546 */
3547 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3548 break;
3549 }
3550 }
3551
3552 /* If hardware_lock held on entry, might drop it, then reaquire */
3553 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
__qlt_send_term_imm_notif(struct scsi_qla_host * vha,struct imm_ntfy_from_isp * ntfy)3554 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3555 struct imm_ntfy_from_isp *ntfy)
3556 {
3557 struct nack_to_isp *nack;
3558 struct qla_hw_data *ha = vha->hw;
3559 request_t *pkt;
3560 int ret = 0;
3561
3562 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3563 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3564
3565 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3566 if (pkt == NULL) {
3567 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3568 "qla_target(%d): %s failed: unable to allocate "
3569 "request packet\n", vha->vp_idx, __func__);
3570 return -ENOMEM;
3571 }
3572
3573 pkt->entry_type = NOTIFY_ACK_TYPE;
3574 pkt->entry_count = 1;
3575 pkt->handle = QLA_TGT_SKIP_HANDLE;
3576
3577 nack = (struct nack_to_isp *)pkt;
3578 nack->ox_id = ntfy->ox_id;
3579
3580 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3581 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3582 nack->u.isp24.flags = ntfy->u.isp24.flags &
3583 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
3584 }
3585
3586 /* terminate */
3587 nack->u.isp24.flags |=
3588 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3589
3590 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3591 nack->u.isp24.status = ntfy->u.isp24.status;
3592 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3593 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3594 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3595 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3596 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3597 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3598
3599 qla2x00_start_iocbs(vha, vha->req);
3600 return ret;
3601 }
3602
qlt_send_term_imm_notif(struct scsi_qla_host * vha,struct imm_ntfy_from_isp * imm,int ha_locked)3603 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3604 struct imm_ntfy_from_isp *imm, int ha_locked)
3605 {
3606 int rc;
3607
3608 WARN_ON_ONCE(!ha_locked);
3609 rc = __qlt_send_term_imm_notif(vha, imm);
3610 pr_debug("rc = %d\n", rc);
3611 }
3612
3613 /*
3614 * If hardware_lock held on entry, might drop it, then reaquire
3615 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3616 */
__qlt_send_term_exchange(struct qla_qpair * qpair,struct qla_tgt_cmd * cmd,struct atio_from_isp * atio)3617 static int __qlt_send_term_exchange(struct qla_qpair *qpair,
3618 struct qla_tgt_cmd *cmd,
3619 struct atio_from_isp *atio)
3620 {
3621 struct scsi_qla_host *vha = qpair->vha;
3622 struct ctio7_to_24xx *ctio24;
3623 struct qla_hw_data *ha = vha->hw;
3624 request_t *pkt;
3625 int ret = 0;
3626 uint16_t temp;
3627
3628 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3629
3630 if (cmd)
3631 vha = cmd->vha;
3632
3633 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
3634 if (pkt == NULL) {
3635 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3636 "qla_target(%d): %s failed: unable to allocate "
3637 "request packet\n", vha->vp_idx, __func__);
3638 return -ENOMEM;
3639 }
3640
3641 if (cmd != NULL) {
3642 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3643 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3644 "qla_target(%d): Terminating cmd %p with "
3645 "incorrect state %d\n", vha->vp_idx, cmd,
3646 cmd->state);
3647 } else
3648 ret = 1;
3649 }
3650
3651 qpair->tgt_counters.num_term_xchg_sent++;
3652 pkt->entry_count = 1;
3653 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3654
3655 ctio24 = (struct ctio7_to_24xx *)pkt;
3656 ctio24->entry_type = CTIO_TYPE7;
3657 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED);
3658 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
3659 ctio24->vp_index = vha->vp_idx;
3660 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
3661 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3662 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3663 CTIO7_FLAGS_TERMINATE;
3664 ctio24->u.status1.flags = cpu_to_le16(temp);
3665 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3666 ctio24->u.status1.ox_id = cpu_to_le16(temp);
3667
3668 /* Memory Barrier */
3669 wmb();
3670 if (qpair->reqq_start_iocbs)
3671 qpair->reqq_start_iocbs(qpair);
3672 else
3673 qla2x00_start_iocbs(vha, qpair->req);
3674 return ret;
3675 }
3676
qlt_send_term_exchange(struct qla_qpair * qpair,struct qla_tgt_cmd * cmd,struct atio_from_isp * atio,int ha_locked,int ul_abort)3677 static void qlt_send_term_exchange(struct qla_qpair *qpair,
3678 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3679 int ul_abort)
3680 {
3681 struct scsi_qla_host *vha;
3682 unsigned long flags = 0;
3683 int rc;
3684
3685 /* why use different vha? NPIV */
3686 if (cmd)
3687 vha = cmd->vha;
3688 else
3689 vha = qpair->vha;
3690
3691 if (ha_locked) {
3692 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3693 if (rc == -ENOMEM)
3694 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3695 goto done;
3696 }
3697 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3698 rc = __qlt_send_term_exchange(qpair, cmd, atio);
3699 if (rc == -ENOMEM)
3700 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
3701
3702 done:
3703 if (cmd && !ul_abort && !cmd->aborted) {
3704 if (cmd->sg_mapped)
3705 qlt_unmap_sg(vha, cmd);
3706 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3707 }
3708
3709 if (!ha_locked)
3710 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
3711
3712 return;
3713 }
3714
qlt_init_term_exchange(struct scsi_qla_host * vha)3715 static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3716 {
3717 struct list_head free_list;
3718 struct qla_tgt_cmd *cmd, *tcmd;
3719
3720 vha->hw->tgt.leak_exchg_thresh_hold =
3721 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3722
3723 cmd = tcmd = NULL;
3724 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3725 INIT_LIST_HEAD(&free_list);
3726 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3727
3728 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3729 list_del(&cmd->cmd_list);
3730 /* This cmd was never sent to TCM. There is no need
3731 * to schedule free or call free_cmd
3732 */
3733 qlt_free_cmd(cmd);
3734 vha->hw->tgt.num_qfull_cmds_alloc--;
3735 }
3736 }
3737 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3738 }
3739
qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host * vha)3740 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3741 {
3742 uint32_t total_leaked;
3743
3744 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3745
3746 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3747 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3748
3749 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3750 "Chip reset due to exchange starvation: %d/%d.\n",
3751 total_leaked, vha->hw->cur_fw_xcb_count);
3752
3753 if (IS_P3P_TYPE(vha->hw))
3754 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3755 else
3756 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3757 qla2xxx_wake_dpc(vha);
3758 }
3759
3760 }
3761
qlt_abort_cmd(struct qla_tgt_cmd * cmd)3762 int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3763 {
3764 struct qla_tgt *tgt = cmd->tgt;
3765 struct scsi_qla_host *vha = tgt->vha;
3766 struct se_cmd *se_cmd = &cmd->se_cmd;
3767 unsigned long flags;
3768
3769 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3770 "qla_target(%d): terminating exchange for aborted cmd=%p "
3771 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3772 se_cmd->tag);
3773
3774 spin_lock_irqsave(&cmd->cmd_lock, flags);
3775 if (cmd->aborted) {
3776 if (cmd->sg_mapped)
3777 qlt_unmap_sg(vha, cmd);
3778
3779 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3780 /*
3781 * It's normal to see 2 calls in this path:
3782 * 1) XFER Rdy completion + CMD_T_ABORT
3783 * 2) TCM TMR - drain_state_list
3784 */
3785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3786 "multiple abort. %p transport_state %x, t_state %x, "
3787 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3788 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
3789 return -EIO;
3790 }
3791 cmd->aborted = 1;
3792 cmd->trc_flags |= TRC_ABORT;
3793 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3794
3795 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
3796 return 0;
3797 }
3798 EXPORT_SYMBOL(qlt_abort_cmd);
3799
qlt_free_cmd(struct qla_tgt_cmd * cmd)3800 void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3801 {
3802 struct fc_port *sess = cmd->sess;
3803
3804 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3805 "%s: se_cmd[%p] ox_id %04x\n",
3806 __func__, &cmd->se_cmd,
3807 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
3808
3809 BUG_ON(cmd->cmd_in_wq);
3810
3811 if (!cmd->q_full)
3812 qlt_decr_num_pend_cmds(cmd->vha);
3813
3814 BUG_ON(cmd->sg_mapped);
3815 cmd->jiffies_at_free = get_jiffies_64();
3816
3817 if (!sess || !sess->se_sess) {
3818 WARN_ON(1);
3819 return;
3820 }
3821 cmd->jiffies_at_free = get_jiffies_64();
3822 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
3823 }
3824 EXPORT_SYMBOL(qlt_free_cmd);
3825
3826 /*
3827 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3828 */
qlt_term_ctio_exchange(struct qla_qpair * qpair,void * ctio,struct qla_tgt_cmd * cmd,uint32_t status)3829 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
3830 struct qla_tgt_cmd *cmd, uint32_t status)
3831 {
3832 int term = 0;
3833 struct scsi_qla_host *vha = qpair->vha;
3834
3835 if (cmd->se_cmd.prot_op)
3836 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
3837 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3838 "se_cmd=%p tag[%x] op %#x/%s",
3839 cmd->lba, cmd->lba,
3840 cmd->num_blks, &cmd->se_cmd,
3841 cmd->atio.u.isp24.exchange_addr,
3842 cmd->se_cmd.prot_op,
3843 prot_op_str(cmd->se_cmd.prot_op));
3844
3845 if (ctio != NULL) {
3846 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3847
3848 term = !(c->flags &
3849 cpu_to_le16(OF_TERM_EXCH));
3850 } else
3851 term = 1;
3852
3853 if (term)
3854 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
3855
3856 return term;
3857 }
3858
3859
3860 /* ha->hardware_lock supposed to be held on entry */
qlt_ctio_to_cmd(struct scsi_qla_host * vha,struct rsp_que * rsp,uint32_t handle,void * ctio)3861 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3862 struct rsp_que *rsp, uint32_t handle, void *ctio)
3863 {
3864 void *cmd = NULL;
3865 struct req_que *req;
3866 int qid = GET_QID(handle);
3867 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
3868
3869 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3870 return NULL;
3871
3872 if (qid == rsp->req->id) {
3873 req = rsp->req;
3874 } else if (vha->hw->req_q_map[qid]) {
3875 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3876 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3877 vha->vp_idx, rsp->id, handle);
3878 req = vha->hw->req_q_map[qid];
3879 } else {
3880 return NULL;
3881 }
3882
3883 h &= QLA_CMD_HANDLE_MASK;
3884
3885 if (h != QLA_TGT_NULL_HANDLE) {
3886 if (unlikely(h >= req->num_outstanding_cmds)) {
3887 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3888 "qla_target(%d): Wrong handle %x received\n",
3889 vha->vp_idx, handle);
3890 return NULL;
3891 }
3892
3893 cmd = req->outstanding_cmds[h];
3894 if (unlikely(cmd == NULL)) {
3895 ql_dbg(ql_dbg_async, vha, 0xe053,
3896 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3897 vha->vp_idx, handle, req->id, rsp->id);
3898 return NULL;
3899 }
3900 req->outstanding_cmds[h] = NULL;
3901 } else if (ctio != NULL) {
3902 /* We can't get loop ID from CTIO7 */
3903 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3904 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3905 "support NULL handles\n", vha->vp_idx);
3906 return NULL;
3907 }
3908
3909 return cmd;
3910 }
3911
3912 /*
3913 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3914 */
qlt_do_ctio_completion(struct scsi_qla_host * vha,struct rsp_que * rsp,uint32_t handle,uint32_t status,void * ctio)3915 static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3916 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
3917 {
3918 struct qla_hw_data *ha = vha->hw;
3919 struct se_cmd *se_cmd;
3920 struct qla_tgt_cmd *cmd;
3921 struct qla_qpair *qpair = rsp->qpair;
3922
3923 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3924 /* That could happen only in case of an error/reset/abort */
3925 if (status != CTIO_SUCCESS) {
3926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3927 "Intermediate CTIO received"
3928 " (status %x)\n", status);
3929 }
3930 return;
3931 }
3932
3933 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
3934 if (cmd == NULL)
3935 return;
3936
3937 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) &&
3938 cmd->sess) {
3939 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess,
3940 (struct ctio7_from_24xx *)ctio);
3941 }
3942
3943 se_cmd = &cmd->se_cmd;
3944 cmd->cmd_sent_to_fw = 0;
3945
3946 qlt_unmap_sg(vha, cmd);
3947
3948 if (unlikely(status != CTIO_SUCCESS)) {
3949 switch (status & 0xFFFF) {
3950 case CTIO_INVALID_RX_ID:
3951 if (printk_ratelimit())
3952 dev_info(&vha->hw->pdev->dev,
3953 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n",
3954 vha->vp_idx, cmd->atio.u.isp24.attr,
3955 ((cmd->ctio_flags >> 9) & 0xf),
3956 cmd->ctio_flags);
3957
3958 break;
3959 case CTIO_LIP_RESET:
3960 case CTIO_TARGET_RESET:
3961 case CTIO_ABORTED:
3962 /* driver request abort via Terminate exchange */
3963 case CTIO_TIMEOUT:
3964 /* They are OK */
3965 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3966 "qla_target(%d): CTIO with "
3967 "status %#x received, state %x, se_cmd %p, "
3968 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3969 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3970 status, cmd->state, se_cmd);
3971 break;
3972
3973 case CTIO_PORT_LOGGED_OUT:
3974 case CTIO_PORT_UNAVAILABLE:
3975 {
3976 int logged_out =
3977 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3978
3979 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3980 "qla_target(%d): CTIO with %s status %x "
3981 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3982 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
3983 status, cmd->state, se_cmd);
3984
3985 if (logged_out && cmd->sess) {
3986 /*
3987 * Session is already logged out, but we need
3988 * to notify initiator, who's not aware of this
3989 */
3990 cmd->sess->send_els_logo = 1;
3991 ql_dbg(ql_dbg_disc, vha, 0x20f8,
3992 "%s %d %8phC post del sess\n",
3993 __func__, __LINE__, cmd->sess->port_name);
3994
3995 qlt_schedule_sess_for_deletion(cmd->sess);
3996 }
3997 break;
3998 }
3999 case CTIO_DIF_ERROR: {
4000 struct ctio_crc_from_fw *crc =
4001 (struct ctio_crc_from_fw *)ctio;
4002 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
4003 "qla_target(%d): CTIO with DIF_ERROR status %x "
4004 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
4005 "expect_dif[0x%llx]\n",
4006 vha->vp_idx, status, cmd->state, se_cmd,
4007 *((u64 *)&crc->actual_dif[0]),
4008 *((u64 *)&crc->expected_dif[0]));
4009
4010 qlt_handle_dif_error(qpair, cmd, ctio);
4011 return;
4012 }
4013
4014 case CTIO_FAST_AUTH_ERR:
4015 case CTIO_FAST_INCOMP_PAD_LEN:
4016 case CTIO_FAST_INVALID_REQ:
4017 case CTIO_FAST_SPI_ERR:
4018 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
4019 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n",
4020 vha->vp_idx, status, cmd->state, se_cmd);
4021 break;
4022
4023 default:
4024 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
4025 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
4026 vha->vp_idx, status, cmd->state, se_cmd);
4027 break;
4028 }
4029
4030
4031 /* "cmd->aborted" means
4032 * cmd is already aborted/terminated, we don't
4033 * need to terminate again. The exchange is already
4034 * cleaned up/freed at FW level. Just cleanup at driver
4035 * level.
4036 */
4037 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
4038 (!cmd->aborted)) {
4039 cmd->trc_flags |= TRC_CTIO_ERR;
4040 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
4041 return;
4042 }
4043 }
4044
4045 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
4046 cmd->trc_flags |= TRC_CTIO_DONE;
4047 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
4048 cmd->state = QLA_TGT_STATE_DATA_IN;
4049
4050 if (status == CTIO_SUCCESS)
4051 cmd->write_data_transferred = 1;
4052
4053 ha->tgt.tgt_ops->handle_data(cmd);
4054 return;
4055 } else if (cmd->aborted) {
4056 cmd->trc_flags |= TRC_CTIO_ABORTED;
4057 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
4058 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
4059 } else {
4060 cmd->trc_flags |= TRC_CTIO_STRANGE;
4061 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
4062 "qla_target(%d): A command in state (%d) should "
4063 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
4064 }
4065
4066 if (unlikely(status != CTIO_SUCCESS) &&
4067 !cmd->aborted) {
4068 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
4069 dump_stack();
4070 }
4071
4072 ha->tgt.tgt_ops->free_cmd(cmd);
4073 }
4074
qlt_get_fcp_task_attr(struct scsi_qla_host * vha,uint8_t task_codes)4075 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
4076 uint8_t task_codes)
4077 {
4078 int fcp_task_attr;
4079
4080 switch (task_codes) {
4081 case ATIO_SIMPLE_QUEUE:
4082 fcp_task_attr = TCM_SIMPLE_TAG;
4083 break;
4084 case ATIO_HEAD_OF_QUEUE:
4085 fcp_task_attr = TCM_HEAD_TAG;
4086 break;
4087 case ATIO_ORDERED_QUEUE:
4088 fcp_task_attr = TCM_ORDERED_TAG;
4089 break;
4090 case ATIO_ACA_QUEUE:
4091 fcp_task_attr = TCM_ACA_TAG;
4092 break;
4093 case ATIO_UNTAGGED:
4094 fcp_task_attr = TCM_SIMPLE_TAG;
4095 break;
4096 default:
4097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4098 "qla_target: unknown task code %x, use ORDERED instead\n",
4099 task_codes);
4100 fcp_task_attr = TCM_ORDERED_TAG;
4101 break;
4102 }
4103
4104 return fcp_task_attr;
4105 }
4106
4107 /*
4108 * Process context for I/O path into tcm_qla2xxx code
4109 */
__qlt_do_work(struct qla_tgt_cmd * cmd)4110 static void __qlt_do_work(struct qla_tgt_cmd *cmd)
4111 {
4112 scsi_qla_host_t *vha = cmd->vha;
4113 struct qla_hw_data *ha = vha->hw;
4114 struct fc_port *sess = cmd->sess;
4115 struct atio_from_isp *atio = &cmd->atio;
4116 unsigned char *cdb;
4117 unsigned long flags;
4118 uint32_t data_length;
4119 int ret, fcp_task_attr, data_dir, bidi = 0;
4120 struct qla_qpair *qpair = cmd->qpair;
4121
4122 cmd->cmd_in_wq = 0;
4123 cmd->trc_flags |= TRC_DO_WORK;
4124
4125 if (cmd->aborted) {
4126 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4127 "cmd with tag %u is aborted\n",
4128 cmd->atio.u.isp24.exchange_addr);
4129 goto out_term;
4130 }
4131
4132 spin_lock_init(&cmd->cmd_lock);
4133 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
4134 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr);
4135
4136 if (atio->u.isp24.fcp_cmnd.rddata &&
4137 atio->u.isp24.fcp_cmnd.wrdata) {
4138 bidi = 1;
4139 data_dir = DMA_TO_DEVICE;
4140 } else if (atio->u.isp24.fcp_cmnd.rddata)
4141 data_dir = DMA_FROM_DEVICE;
4142 else if (atio->u.isp24.fcp_cmnd.wrdata)
4143 data_dir = DMA_TO_DEVICE;
4144 else
4145 data_dir = DMA_NONE;
4146
4147 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4148 atio->u.isp24.fcp_cmnd.task_attr);
4149 data_length = get_datalen_for_atio(atio);
4150
4151 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4152 fcp_task_attr, data_dir, bidi);
4153 if (ret != 0)
4154 goto out_term;
4155 /*
4156 * Drop extra session reference from qlt_handle_cmd_for_atio().
4157 */
4158 ha->tgt.tgt_ops->put_sess(sess);
4159 return;
4160
4161 out_term:
4162 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
4163 /*
4164 * cmd has not sent to target yet, so pass NULL as the second
4165 * argument to qlt_send_term_exchange() and free the memory here.
4166 */
4167 cmd->trc_flags |= TRC_DO_WORK_ERR;
4168 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4169 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
4170
4171 qlt_decr_num_pend_cmds(vha);
4172 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
4173 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4174
4175 ha->tgt.tgt_ops->put_sess(sess);
4176 }
4177
qlt_do_work(struct work_struct * work)4178 static void qlt_do_work(struct work_struct *work)
4179 {
4180 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
4181 scsi_qla_host_t *vha = cmd->vha;
4182 unsigned long flags;
4183
4184 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4185 list_del(&cmd->cmd_list);
4186 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4187
4188 __qlt_do_work(cmd);
4189 }
4190
qlt_clr_qp_table(struct scsi_qla_host * vha)4191 void qlt_clr_qp_table(struct scsi_qla_host *vha)
4192 {
4193 unsigned long flags;
4194 struct qla_hw_data *ha = vha->hw;
4195 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4196 void *node;
4197 u64 key = 0;
4198
4199 ql_log(ql_log_info, vha, 0x706c,
4200 "User update Number of Active Qpairs %d\n",
4201 ha->tgt.num_act_qpairs);
4202
4203 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4204
4205 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4206 btree_remove64(&tgt->lun_qpair_map, key);
4207
4208 ha->base_qpair->lun_cnt = 0;
4209 for (key = 0; key < ha->max_qpairs; key++)
4210 if (ha->queue_pair_map[key])
4211 ha->queue_pair_map[key]->lun_cnt = 0;
4212
4213 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4214 }
4215
qlt_assign_qpair(struct scsi_qla_host * vha,struct qla_tgt_cmd * cmd)4216 static void qlt_assign_qpair(struct scsi_qla_host *vha,
4217 struct qla_tgt_cmd *cmd)
4218 {
4219 struct qla_qpair *qpair, *qp;
4220 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4221 struct qla_qpair_hint *h;
4222
4223 if (vha->flags.qpairs_available) {
4224 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4225 if (unlikely(!h)) {
4226 /* spread lun to qpair ratio evently */
4227 int lcnt = 0, rc;
4228 struct scsi_qla_host *base_vha =
4229 pci_get_drvdata(vha->hw->pdev);
4230
4231 qpair = vha->hw->base_qpair;
4232 if (qpair->lun_cnt == 0) {
4233 qpair->lun_cnt++;
4234 h = qla_qpair_to_hint(tgt, qpair);
4235 BUG_ON(!h);
4236 rc = btree_insert64(&tgt->lun_qpair_map,
4237 cmd->unpacked_lun, h, GFP_ATOMIC);
4238 if (rc) {
4239 qpair->lun_cnt--;
4240 ql_log(ql_log_info, vha, 0xd037,
4241 "Unable to insert lun %llx into lun_qpair_map\n",
4242 cmd->unpacked_lun);
4243 }
4244 goto out;
4245 } else {
4246 lcnt = qpair->lun_cnt;
4247 }
4248
4249 h = NULL;
4250 list_for_each_entry(qp, &base_vha->qp_list,
4251 qp_list_elem) {
4252 if (qp->lun_cnt == 0) {
4253 qp->lun_cnt++;
4254 h = qla_qpair_to_hint(tgt, qp);
4255 BUG_ON(!h);
4256 rc = btree_insert64(&tgt->lun_qpair_map,
4257 cmd->unpacked_lun, h, GFP_ATOMIC);
4258 if (rc) {
4259 qp->lun_cnt--;
4260 ql_log(ql_log_info, vha, 0xd038,
4261 "Unable to insert lun %llx into lun_qpair_map\n",
4262 cmd->unpacked_lun);
4263 }
4264 qpair = qp;
4265 goto out;
4266 } else {
4267 if (qp->lun_cnt < lcnt) {
4268 lcnt = qp->lun_cnt;
4269 qpair = qp;
4270 continue;
4271 }
4272 }
4273 }
4274 BUG_ON(!qpair);
4275 qpair->lun_cnt++;
4276 h = qla_qpair_to_hint(tgt, qpair);
4277 BUG_ON(!h);
4278 rc = btree_insert64(&tgt->lun_qpair_map,
4279 cmd->unpacked_lun, h, GFP_ATOMIC);
4280 if (rc) {
4281 qpair->lun_cnt--;
4282 ql_log(ql_log_info, vha, 0xd039,
4283 "Unable to insert lun %llx into lun_qpair_map\n",
4284 cmd->unpacked_lun);
4285 }
4286 }
4287 } else {
4288 h = &tgt->qphints[0];
4289 }
4290 out:
4291 cmd->qpair = h->qpair;
4292 cmd->se_cmd.cpuid = h->cpuid;
4293 }
4294
qlt_get_tag(scsi_qla_host_t * vha,struct fc_port * sess,struct atio_from_isp * atio)4295 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
4296 struct fc_port *sess,
4297 struct atio_from_isp *atio)
4298 {
4299 struct qla_tgt_cmd *cmd;
4300
4301 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess);
4302 if (!cmd)
4303 return NULL;
4304
4305 cmd->cmd_type = TYPE_TGT_CMD;
4306 memcpy(&cmd->atio, atio, sizeof(*atio));
4307 INIT_LIST_HEAD(&cmd->sess_cmd_list);
4308 cmd->state = QLA_TGT_STATE_NEW;
4309 cmd->tgt = vha->vha_tgt.qla_tgt;
4310 qlt_incr_num_pend_cmds(vha);
4311 cmd->vha = vha;
4312 cmd->sess = sess;
4313 cmd->loop_id = sess->loop_id;
4314 cmd->conf_compl_supported = sess->conf_compl_supported;
4315
4316 cmd->trc_flags = 0;
4317 cmd->jiffies_at_alloc = get_jiffies_64();
4318
4319 cmd->unpacked_lun = scsilun_to_int(
4320 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4321 qlt_assign_qpair(vha, cmd);
4322 cmd->reset_count = vha->hw->base_qpair->chip_reset;
4323 cmd->vp_idx = vha->vp_idx;
4324 cmd->edif = sess->edif.enable;
4325
4326 return cmd;
4327 }
4328
4329 /* ha->hardware_lock supposed to be held on entry */
qlt_handle_cmd_for_atio(struct scsi_qla_host * vha,struct atio_from_isp * atio)4330 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4331 struct atio_from_isp *atio)
4332 {
4333 struct qla_hw_data *ha = vha->hw;
4334 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4335 struct fc_port *sess;
4336 struct qla_tgt_cmd *cmd;
4337 unsigned long flags;
4338 port_id_t id;
4339
4340 if (unlikely(tgt->tgt_stop)) {
4341 ql_dbg(ql_dbg_io, vha, 0x3061,
4342 "New command while device %p is shutting down\n", tgt);
4343 return -ENODEV;
4344 }
4345
4346 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
4347 if (IS_SW_RESV_ADDR(id))
4348 return -EBUSY;
4349
4350 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4351 if (unlikely(!sess))
4352 return -EFAULT;
4353
4354 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4355 * session deletion, but it's still in sess_del_work wq */
4356 if (sess->deleted) {
4357 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
4358 "New command while old session %p is being deleted\n",
4359 sess);
4360 return -EFAULT;
4361 }
4362
4363 /*
4364 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4365 */
4366 if (!kref_get_unless_zero(&sess->sess_kref)) {
4367 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
4368 "%s: kref_get fail, %8phC oxid %x \n",
4369 __func__, sess->port_name,
4370 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4371 return -EFAULT;
4372 }
4373
4374 cmd = qlt_get_tag(vha, sess, atio);
4375 if (!cmd) {
4376 ql_dbg(ql_dbg_io, vha, 0x3062,
4377 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
4378 ha->tgt.tgt_ops->put_sess(sess);
4379 return -EBUSY;
4380 }
4381
4382 cmd->cmd_in_wq = 1;
4383 cmd->trc_flags |= TRC_NEW_CMD;
4384
4385 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4386 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4387 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4388
4389 INIT_WORK(&cmd->work, qlt_do_work);
4390 if (vha->flags.qpairs_available) {
4391 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4392 } else if (ha->msix_count) {
4393 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4394 queue_work(qla_tgt_wq, &cmd->work);
4395 else
4396 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4397 &cmd->work);
4398 } else {
4399 queue_work(qla_tgt_wq, &cmd->work);
4400 }
4401
4402 return 0;
4403 }
4404
4405 /* ha->hardware_lock supposed to be held on entry */
qlt_issue_task_mgmt(struct fc_port * sess,u64 lun,int fn,void * iocb,int flags)4406 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
4407 int fn, void *iocb, int flags)
4408 {
4409 struct scsi_qla_host *vha = sess->vha;
4410 struct qla_hw_data *ha = vha->hw;
4411 struct qla_tgt_mgmt_cmd *mcmd;
4412 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4413 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
4414
4415 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4416 if (!mcmd) {
4417 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4418 "qla_target(%d): Allocation of management "
4419 "command failed, some commands and their data could "
4420 "leak\n", vha->vp_idx);
4421 return -ENOMEM;
4422 }
4423 memset(mcmd, 0, sizeof(*mcmd));
4424 mcmd->sess = sess;
4425
4426 if (iocb) {
4427 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4428 sizeof(mcmd->orig_iocb.imm_ntfy));
4429 }
4430 mcmd->tmr_func = fn;
4431 mcmd->flags = flags;
4432 mcmd->reset_count = ha->base_qpair->chip_reset;
4433 mcmd->qpair = h->qpair;
4434 mcmd->vha = vha;
4435 mcmd->se_cmd.cpuid = h->cpuid;
4436 mcmd->unpacked_lun = lun;
4437
4438 switch (fn) {
4439 case QLA_TGT_LUN_RESET:
4440 case QLA_TGT_CLEAR_TS:
4441 case QLA_TGT_ABORT_TS:
4442 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4443 fallthrough;
4444 case QLA_TGT_CLEAR_ACA:
4445 h = qlt_find_qphint(vha, mcmd->unpacked_lun);
4446 mcmd->qpair = h->qpair;
4447 mcmd->se_cmd.cpuid = h->cpuid;
4448 break;
4449
4450 case QLA_TGT_TARGET_RESET:
4451 case QLA_TGT_NEXUS_LOSS_SESS:
4452 case QLA_TGT_NEXUS_LOSS:
4453 case QLA_TGT_ABORT_ALL:
4454 default:
4455 /* no-op */
4456 break;
4457 }
4458
4459 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
4460 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq,
4461 &mcmd->work);
4462
4463 return 0;
4464 }
4465
4466 /* ha->hardware_lock supposed to be held on entry */
qlt_handle_task_mgmt(struct scsi_qla_host * vha,void * iocb)4467 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4468 {
4469 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4470 struct qla_hw_data *ha = vha->hw;
4471 struct fc_port *sess;
4472 u64 unpacked_lun;
4473 int fn;
4474 unsigned long flags;
4475
4476 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4477
4478 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4479 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4480 a->u.isp24.fcp_hdr.s_id);
4481 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4482
4483 unpacked_lun =
4484 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4485
4486 if (sess == NULL || sess->deleted)
4487 return -EFAULT;
4488
4489 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4490 }
4491
4492 /* ha->hardware_lock supposed to be held on entry */
__qlt_abort_task(struct scsi_qla_host * vha,struct imm_ntfy_from_isp * iocb,struct fc_port * sess)4493 static int __qlt_abort_task(struct scsi_qla_host *vha,
4494 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
4495 {
4496 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4497 struct qla_hw_data *ha = vha->hw;
4498 struct qla_tgt_mgmt_cmd *mcmd;
4499 u64 unpacked_lun;
4500 int rc;
4501
4502 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4503 if (mcmd == NULL) {
4504 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4505 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4506 vha->vp_idx, __func__);
4507 return -ENOMEM;
4508 }
4509 memset(mcmd, 0, sizeof(*mcmd));
4510
4511 mcmd->sess = sess;
4512 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4513 sizeof(mcmd->orig_iocb.imm_ntfy));
4514
4515 unpacked_lun =
4516 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
4517 mcmd->reset_count = ha->base_qpair->chip_reset;
4518 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
4519 mcmd->qpair = ha->base_qpair;
4520
4521 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
4522 le16_to_cpu(iocb->u.isp2x.seq_id));
4523 if (rc != 0) {
4524 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4525 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4526 vha->vp_idx, rc);
4527 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4528 return -EFAULT;
4529 }
4530
4531 return 0;
4532 }
4533
4534 /* ha->hardware_lock supposed to be held on entry */
qlt_abort_task(struct scsi_qla_host * vha,struct imm_ntfy_from_isp * iocb)4535 static int qlt_abort_task(struct scsi_qla_host *vha,
4536 struct imm_ntfy_from_isp *iocb)
4537 {
4538 struct qla_hw_data *ha = vha->hw;
4539 struct fc_port *sess;
4540 int loop_id;
4541 unsigned long flags;
4542
4543 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4544
4545 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4546 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4547 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4548
4549 if (sess == NULL) {
4550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4551 "qla_target(%d): task abort for unexisting "
4552 "session\n", vha->vp_idx);
4553 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
4554 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4555 }
4556
4557 return __qlt_abort_task(vha, iocb, sess);
4558 }
4559
qlt_logo_completion_handler(fc_port_t * fcport,int rc)4560 void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4561 {
4562 if (rc != MBS_COMMAND_COMPLETE) {
4563 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4564 "%s: se_sess %p / sess %p from"
4565 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4566 " LOGO failed: %#x\n",
4567 __func__,
4568 fcport->se_sess,
4569 fcport,
4570 fcport->port_name, fcport->loop_id,
4571 fcport->d_id.b.domain, fcport->d_id.b.area,
4572 fcport->d_id.b.al_pa, rc);
4573 }
4574
4575 fcport->logout_completed = 1;
4576 }
4577
4578 /*
4579 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4580 *
4581 * Schedules sessions with matching port_id/loop_id but different wwn for
4582 * deletion. Returns existing session with matching wwn if present.
4583 * Null otherwise.
4584 */
4585 struct fc_port *
qlt_find_sess_invalidate_other(scsi_qla_host_t * vha,uint64_t wwn,port_id_t port_id,uint16_t loop_id,struct fc_port ** conflict_sess)4586 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
4587 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
4588 {
4589 struct fc_port *sess = NULL, *other_sess;
4590 uint64_t other_wwn;
4591
4592 *conflict_sess = NULL;
4593
4594 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
4595
4596 other_wwn = wwn_to_u64(other_sess->port_name);
4597
4598 if (wwn == other_wwn) {
4599 WARN_ON(sess);
4600 sess = other_sess;
4601 continue;
4602 }
4603
4604 /* find other sess with nport_id collision */
4605 if (port_id.b24 == other_sess->d_id.b24) {
4606 if (loop_id != other_sess->loop_id) {
4607 ql_dbg(ql_dbg_disc, vha, 0x1000c,
4608 "Invalidating sess %p loop_id %d wwn %llx.\n",
4609 other_sess, other_sess->loop_id, other_wwn);
4610
4611 /*
4612 * logout_on_delete is set by default, but another
4613 * session that has the same s_id/loop_id combo
4614 * might have cleared it when requested this session
4615 * deletion, so don't touch it
4616 */
4617 qlt_schedule_sess_for_deletion(other_sess);
4618 } else {
4619 /*
4620 * Another wwn used to have our s_id/loop_id
4621 * kill the session, but don't free the loop_id
4622 */
4623 ql_dbg(ql_dbg_disc, vha, 0xf01b,
4624 "Invalidating sess %p loop_id %d wwn %llx.\n",
4625 other_sess, other_sess->loop_id, other_wwn);
4626
4627 other_sess->keep_nport_handle = 1;
4628 if (other_sess->disc_state != DSC_DELETED)
4629 *conflict_sess = other_sess;
4630 qlt_schedule_sess_for_deletion(other_sess);
4631 }
4632 continue;
4633 }
4634
4635 /* find other sess with nport handle collision */
4636 if ((loop_id == other_sess->loop_id) &&
4637 (loop_id != FC_NO_LOOP_ID)) {
4638 ql_dbg(ql_dbg_disc, vha, 0x1000d,
4639 "Invalidating sess %p loop_id %d wwn %llx.\n",
4640 other_sess, other_sess->loop_id, other_wwn);
4641
4642 /* Same loop_id but different s_id
4643 * Ok to kill and logout */
4644 qlt_schedule_sess_for_deletion(other_sess);
4645 }
4646 }
4647
4648 return sess;
4649 }
4650
4651 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
abort_cmds_for_s_id(struct scsi_qla_host * vha,port_id_t * s_id)4652 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4653 {
4654 struct qla_tgt_sess_op *op;
4655 struct qla_tgt_cmd *cmd;
4656 uint32_t key;
4657 int count = 0;
4658 unsigned long flags;
4659
4660 key = (((u32)s_id->b.domain << 16) |
4661 ((u32)s_id->b.area << 8) |
4662 ((u32)s_id->b.al_pa));
4663
4664 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4665 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4666 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4667
4668 if (op_key == key) {
4669 op->aborted = true;
4670 count++;
4671 }
4672 }
4673
4674 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4675 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4676
4677 if (cmd_key == key) {
4678 cmd->aborted = 1;
4679 count++;
4680 }
4681 }
4682 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4683
4684 return count;
4685 }
4686
qlt_handle_login(struct scsi_qla_host * vha,struct imm_ntfy_from_isp * iocb)4687 static int qlt_handle_login(struct scsi_qla_host *vha,
4688 struct imm_ntfy_from_isp *iocb)
4689 {
4690 struct fc_port *sess = NULL, *conflict_sess = NULL;
4691 uint64_t wwn;
4692 port_id_t port_id;
4693 uint16_t loop_id, wd3_lo;
4694 int res = 0;
4695 struct qlt_plogi_ack_t *pla;
4696 unsigned long flags;
4697
4698 lockdep_assert_held(&vha->hw->hardware_lock);
4699
4700 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4701
4702 port_id.b.domain = iocb->u.isp24.port_id[2];
4703 port_id.b.area = iocb->u.isp24.port_id[1];
4704 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4705 port_id.b.rsvd_1 = 0;
4706
4707 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4708
4709 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4710 abort_cmds_for_s_id(vha, &port_id);
4711
4712 if (wwn) {
4713 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4714 sess = qlt_find_sess_invalidate_other(vha, wwn,
4715 port_id, loop_id, &conflict_sess);
4716 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4717 } else {
4718 ql_dbg(ql_dbg_disc, vha, 0xffff,
4719 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ",
4720 __func__, __LINE__, loop_id, port_id.b24);
4721 qlt_send_term_imm_notif(vha, iocb, 1);
4722 goto out;
4723 }
4724
4725 if (IS_SW_RESV_ADDR(port_id)) {
4726 res = 1;
4727 goto out;
4728 }
4729
4730 if (vha->hw->flags.edif_enabled &&
4731 !(vha->e_dbell.db_flags & EDB_ACTIVE) &&
4732 iocb->u.isp24.status_subcode == ELS_PLOGI &&
4733 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) {
4734 ql_dbg(ql_dbg_disc, vha, 0xffff,
4735 "%s %d Term INOT due to app not available lid=%d, NportID %06X ",
4736 __func__, __LINE__, loop_id, port_id.b24);
4737 qlt_send_term_imm_notif(vha, iocb, 1);
4738 goto out;
4739 }
4740
4741 if (vha->hw->flags.edif_enabled) {
4742 if (DBELL_INACTIVE(vha)) {
4743 ql_dbg(ql_dbg_disc, vha, 0xffff,
4744 "%s %d Term INOT due to app not started lid=%d, NportID %06X ",
4745 __func__, __LINE__, loop_id, port_id.b24);
4746 qlt_send_term_imm_notif(vha, iocb, 1);
4747 goto out;
4748 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI &&
4749 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) {
4750 ql_dbg(ql_dbg_disc, vha, 0xffff,
4751 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ",
4752 __func__, __LINE__, loop_id, port_id.b24);
4753 qlt_send_term_imm_notif(vha, iocb, 1);
4754 goto out;
4755 }
4756 }
4757
4758 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4759 if (!pla) {
4760 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff,
4761 "%s %d %8phC Term INOT due to mem alloc fail",
4762 __func__, __LINE__,
4763 iocb->u.isp24.port_name);
4764 qlt_send_term_imm_notif(vha, iocb, 1);
4765 goto out;
4766 }
4767
4768 if (conflict_sess) {
4769 conflict_sess->login_gen++;
4770 qlt_plogi_ack_link(vha, pla, conflict_sess,
4771 QLT_PLOGI_LINK_CONFLICT);
4772 }
4773
4774 if (!sess) {
4775 pla->ref_count++;
4776 ql_dbg(ql_dbg_disc, vha, 0xffff,
4777 "%s %d %8phC post new sess\n",
4778 __func__, __LINE__, iocb->u.isp24.port_name);
4779 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4780 qla24xx_post_newsess_work(vha, &port_id,
4781 iocb->u.isp24.port_name,
4782 iocb->u.isp24.u.plogi.node_name,
4783 pla, 0);
4784 else
4785 qla24xx_post_newsess_work(vha, &port_id,
4786 iocb->u.isp24.port_name, NULL,
4787 pla, 0);
4788
4789 goto out;
4790 }
4791
4792 if (sess->disc_state == DSC_UPD_FCPORT) {
4793 u16 sec;
4794
4795 /*
4796 * Remote port registration is still going on from
4797 * previous login. Allow it to finish before we
4798 * accept the new login.
4799 */
4800 sess->next_disc_state = DSC_DELETE_PEND;
4801 sec = jiffies_to_msecs(jiffies -
4802 sess->jiffies_at_registration) / 1000;
4803 if (sess->sec_since_registration < sec && sec &&
4804 !(sec % 5)) {
4805 sess->sec_since_registration = sec;
4806 ql_dbg(ql_dbg_disc, vha, 0xffff,
4807 "%s %8phC - Slow Rport registration (%d Sec)\n",
4808 __func__, sess->port_name, sec);
4809 }
4810
4811 if (!conflict_sess) {
4812 list_del(&pla->list);
4813 kmem_cache_free(qla_tgt_plogi_cachep, pla);
4814 }
4815
4816 qlt_send_term_imm_notif(vha, iocb, 1);
4817 goto out;
4818 }
4819
4820 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4821 sess->d_id = port_id;
4822 sess->login_gen++;
4823 sess->loop_id = loop_id;
4824
4825 if (iocb->u.isp24.status_subcode == ELS_PLOGI) {
4826 /* remote port has assigned Port ID */
4827 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess))
4828 vha->d_id = sess->d_id;
4829
4830 ql_dbg(ql_dbg_disc, vha, 0xffff,
4831 "%s %8phC - send port online\n",
4832 __func__, sess->port_name);
4833
4834 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE,
4835 sess->d_id.b24);
4836 }
4837
4838 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4839 sess->fw_login_state = DSC_LS_PRLI_PEND;
4840 sess->local = 0;
4841 sess->loop_id = loop_id;
4842 sess->d_id = port_id;
4843 sess->fw_login_state = DSC_LS_PRLI_PEND;
4844 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4845
4846 if (wd3_lo & BIT_7)
4847 sess->conf_compl_supported = 1;
4848
4849 if ((wd3_lo & BIT_4) == 0)
4850 sess->port_type = FCT_INITIATOR;
4851 else
4852 sess->port_type = FCT_TARGET;
4853
4854 } else
4855 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4856
4857
4858 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4859 "%s %d %8phC DS %d\n",
4860 __func__, __LINE__, sess->port_name, sess->disc_state);
4861
4862 switch (sess->disc_state) {
4863 case DSC_DELETED:
4864 case DSC_LOGIN_PEND:
4865 qlt_plogi_ack_unref(vha, pla);
4866 break;
4867
4868 default:
4869 /*
4870 * Under normal circumstances we want to release nport handle
4871 * during LOGO process to avoid nport handle leaks inside FW.
4872 * The exception is when LOGO is done while another PLOGI with
4873 * the same nport handle is waiting as might be the case here.
4874 * Note: there is always a possibily of a race where session
4875 * deletion has already started for other reasons (e.g. ACL
4876 * removal) and now PLOGI arrives:
4877 * 1. if PLOGI arrived in FW after nport handle has been freed,
4878 * FW must have assigned this PLOGI a new/same handle and we
4879 * can proceed ACK'ing it as usual when session deletion
4880 * completes.
4881 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4882 * bit reached it, the handle has now been released. We'll
4883 * get an error when we ACK this PLOGI. Nothing will be sent
4884 * back to initiator. Initiator should eventually retry
4885 * PLOGI and situation will correct itself.
4886 */
4887 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4888 (sess->d_id.b24 == port_id.b24));
4889
4890 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4891 "%s %d %8phC post del sess\n",
4892 __func__, __LINE__, sess->port_name);
4893
4894
4895 qlt_schedule_sess_for_deletion(sess);
4896 break;
4897 }
4898 out:
4899 return res;
4900 }
4901
4902 /*
4903 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4904 */
qlt_24xx_handle_els(struct scsi_qla_host * vha,struct imm_ntfy_from_isp * iocb)4905 static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4906 struct imm_ntfy_from_isp *iocb)
4907 {
4908 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4909 struct qla_hw_data *ha = vha->hw;
4910 struct fc_port *sess = NULL, *conflict_sess = NULL;
4911 uint64_t wwn;
4912 port_id_t port_id;
4913 uint16_t loop_id;
4914 uint16_t wd3_lo;
4915 int res = 0;
4916 unsigned long flags;
4917
4918 lockdep_assert_held(&ha->hardware_lock);
4919
4920 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4921
4922 port_id.b.domain = iocb->u.isp24.port_id[2];
4923 port_id.b.area = iocb->u.isp24.port_id[1];
4924 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4925 port_id.b.rsvd_1 = 0;
4926
4927 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4928
4929 ql_dbg(ql_dbg_disc, vha, 0xf026,
4930 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4931 vha->vp_idx, iocb->u.isp24.port_id[2],
4932 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4933 iocb->u.isp24.status_subcode, loop_id,
4934 iocb->u.isp24.port_name);
4935
4936 /* res = 1 means ack at the end of thread
4937 * res = 0 means ack async/later.
4938 */
4939 switch (iocb->u.isp24.status_subcode) {
4940 case ELS_PLOGI:
4941 res = qlt_handle_login(vha, iocb);
4942 break;
4943
4944 case ELS_PRLI:
4945 if (N2N_TOPO(ha)) {
4946 sess = qla2x00_find_fcport_by_wwpn(vha,
4947 iocb->u.isp24.port_name, 1);
4948
4949 if (vha->hw->flags.edif_enabled && sess &&
4950 (!(sess->flags & FCF_FCSP_DEVICE) ||
4951 !sess->edif.authok)) {
4952 ql_dbg(ql_dbg_disc, vha, 0xffff,
4953 "%s %d %8phC Term PRLI due to unauthorize PRLI\n",
4954 __func__, __LINE__, iocb->u.isp24.port_name);
4955 qlt_send_term_imm_notif(vha, iocb, 1);
4956 break;
4957 }
4958
4959 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4960 ql_dbg(ql_dbg_disc, vha, 0xffff,
4961 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4962 __func__, __LINE__,
4963 iocb->u.isp24.port_name);
4964 qlt_send_term_imm_notif(vha, iocb, 1);
4965 break;
4966 }
4967
4968 res = qlt_handle_login(vha, iocb);
4969 break;
4970 }
4971
4972 if (IS_SW_RESV_ADDR(port_id)) {
4973 res = 1;
4974 break;
4975 }
4976
4977 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4978
4979 if (wwn) {
4980 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4981 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4982 loop_id, &conflict_sess);
4983 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4984 }
4985
4986 if (conflict_sess) {
4987 switch (conflict_sess->disc_state) {
4988 case DSC_DELETED:
4989 case DSC_DELETE_PEND:
4990 break;
4991 default:
4992 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4993 "PRLI with conflicting sess %p port %8phC\n",
4994 conflict_sess, conflict_sess->port_name);
4995 conflict_sess->fw_login_state =
4996 DSC_LS_PORT_UNAVAIL;
4997 qlt_send_term_imm_notif(vha, iocb, 1);
4998 res = 0;
4999 break;
5000 }
5001 }
5002
5003 if (sess != NULL) {
5004 bool delete = false;
5005 int sec;
5006
5007 if (vha->hw->flags.edif_enabled && sess &&
5008 (!(sess->flags & FCF_FCSP_DEVICE) ||
5009 !sess->edif.authok)) {
5010 ql_dbg(ql_dbg_disc, vha, 0xffff,
5011 "%s %d %8phC Term PRLI due to unauthorize prli\n",
5012 __func__, __LINE__, iocb->u.isp24.port_name);
5013 qlt_send_term_imm_notif(vha, iocb, 1);
5014 break;
5015 }
5016
5017 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
5018 switch (sess->fw_login_state) {
5019 case DSC_LS_PLOGI_PEND:
5020 case DSC_LS_PLOGI_COMP:
5021 case DSC_LS_PRLI_COMP:
5022 break;
5023 default:
5024 delete = true;
5025 break;
5026 }
5027
5028 switch (sess->disc_state) {
5029 case DSC_UPD_FCPORT:
5030 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
5031 flags);
5032
5033 sec = jiffies_to_msecs(jiffies -
5034 sess->jiffies_at_registration)/1000;
5035 if (sess->sec_since_registration < sec && sec &&
5036 !(sec % 5)) {
5037 sess->sec_since_registration = sec;
5038 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
5039 "%s %8phC : Slow Rport registration(%d Sec)\n",
5040 __func__, sess->port_name, sec);
5041 }
5042 qlt_send_term_imm_notif(vha, iocb, 1);
5043 return 0;
5044
5045 case DSC_LOGIN_PEND:
5046 case DSC_GPDB:
5047 case DSC_LOGIN_COMPLETE:
5048 case DSC_ADISC:
5049 delete = false;
5050 break;
5051 default:
5052 break;
5053 }
5054
5055 if (delete) {
5056 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
5057 flags);
5058 /*
5059 * Impatient initiator sent PRLI before last
5060 * PLOGI could finish. Will force him to re-try,
5061 * while last one finishes.
5062 */
5063 ql_log(ql_log_warn, sess->vha, 0xf095,
5064 "sess %p PRLI received, before plogi ack.\n",
5065 sess);
5066 qlt_send_term_imm_notif(vha, iocb, 1);
5067 res = 0;
5068 break;
5069 }
5070
5071 /*
5072 * This shouldn't happen under normal circumstances,
5073 * since we have deleted the old session during PLOGI
5074 */
5075 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
5076 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
5077 sess->loop_id, sess, iocb->u.isp24.nport_handle);
5078
5079 sess->local = 0;
5080 sess->loop_id = loop_id;
5081 sess->d_id = port_id;
5082 sess->fw_login_state = DSC_LS_PRLI_PEND;
5083
5084 if (wd3_lo & BIT_7)
5085 sess->conf_compl_supported = 1;
5086
5087 if ((wd3_lo & BIT_4) == 0)
5088 sess->port_type = FCT_INITIATOR;
5089 else
5090 sess->port_type = FCT_TARGET;
5091
5092 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
5093 }
5094 res = 1; /* send notify ack */
5095
5096 /* Make session global (not used in fabric mode) */
5097 if (ha->current_topology != ISP_CFG_F) {
5098 if (sess) {
5099 ql_dbg(ql_dbg_disc, vha, 0x20fa,
5100 "%s %d %8phC post nack\n",
5101 __func__, __LINE__, sess->port_name);
5102 qla24xx_post_nack_work(vha, sess, iocb,
5103 SRB_NACK_PRLI);
5104 res = 0;
5105 } else {
5106 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
5107 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
5108 qla2xxx_wake_dpc(vha);
5109 }
5110 } else {
5111 if (sess) {
5112 ql_dbg(ql_dbg_disc, vha, 0x20fb,
5113 "%s %d %8phC post nack\n",
5114 __func__, __LINE__, sess->port_name);
5115 qla24xx_post_nack_work(vha, sess, iocb,
5116 SRB_NACK_PRLI);
5117 res = 0;
5118 }
5119 }
5120 break;
5121
5122 case ELS_TPRLO:
5123 if (le16_to_cpu(iocb->u.isp24.flags) &
5124 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
5125 loop_id = 0xFFFF;
5126 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
5127 res = 1;
5128 break;
5129 }
5130 fallthrough;
5131 case ELS_LOGO:
5132 case ELS_PRLO:
5133 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5134 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
5135 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5136
5137 if (sess) {
5138 sess->login_gen++;
5139 sess->fw_login_state = DSC_LS_LOGO_PEND;
5140 sess->logo_ack_needed = 1;
5141 memcpy(sess->iocb, iocb, IOCB_SIZE);
5142 }
5143
5144 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5145
5146 ql_dbg(ql_dbg_disc, vha, 0x20fc,
5147 "%s: logo %llx res %d sess %p ",
5148 __func__, wwn, res, sess);
5149 if (res == 0) {
5150 /*
5151 * cmd went upper layer, look for qlt_xmit_tm_rsp()
5152 * for LOGO_ACK & sess delete
5153 */
5154 BUG_ON(!sess);
5155 res = 0;
5156 } else {
5157 /* cmd did not go to upper layer. */
5158 if (sess) {
5159 qlt_schedule_sess_for_deletion(sess);
5160 res = 0;
5161 }
5162 /* else logo will be ack */
5163 }
5164 break;
5165 case ELS_PDISC:
5166 case ELS_ADISC:
5167 {
5168 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5169
5170 if (tgt->link_reinit_iocb_pending) {
5171 qlt_send_notify_ack(ha->base_qpair,
5172 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5173 tgt->link_reinit_iocb_pending = 0;
5174 }
5175
5176 sess = qla2x00_find_fcport_by_wwpn(vha,
5177 iocb->u.isp24.port_name, 1);
5178 if (sess) {
5179 ql_dbg(ql_dbg_disc, vha, 0x20fd,
5180 "sess %p lid %d|%d DS %d LS %d\n",
5181 sess, sess->loop_id, loop_id,
5182 sess->disc_state, sess->fw_login_state);
5183 }
5184
5185 res = 1; /* send notify ack */
5186 break;
5187 }
5188
5189 case ELS_FLOGI: /* should never happen */
5190 default:
5191 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
5192 "qla_target(%d): Unsupported ELS command %x "
5193 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
5194 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5195 break;
5196 }
5197
5198 ql_dbg(ql_dbg_disc, vha, 0xf026,
5199 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5200 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5201
5202 return res;
5203 }
5204
5205 /*
5206 * ha->hardware_lock supposed to be held on entry.
5207 * Might drop it, then reacquire.
5208 */
qlt_handle_imm_notify(struct scsi_qla_host * vha,struct imm_ntfy_from_isp * iocb)5209 static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5210 struct imm_ntfy_from_isp *iocb)
5211 {
5212 struct qla_hw_data *ha = vha->hw;
5213 uint32_t add_flags = 0;
5214 int send_notify_ack = 1;
5215 uint16_t status;
5216
5217 lockdep_assert_held(&ha->hardware_lock);
5218
5219 status = le16_to_cpu(iocb->u.isp2x.status);
5220 switch (status) {
5221 case IMM_NTFY_LIP_RESET:
5222 {
5223 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5224 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5225 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5226 iocb->u.isp24.status_subcode);
5227
5228 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5229 send_notify_ack = 0;
5230 break;
5231 }
5232
5233 case IMM_NTFY_LIP_LINK_REINIT:
5234 {
5235 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5236
5237 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5238 "qla_target(%d): LINK REINIT (loop %#x, "
5239 "subcode %x)\n", vha->vp_idx,
5240 le16_to_cpu(iocb->u.isp24.nport_handle),
5241 iocb->u.isp24.status_subcode);
5242 if (tgt->link_reinit_iocb_pending) {
5243 qlt_send_notify_ack(ha->base_qpair,
5244 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
5245 }
5246 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5247 tgt->link_reinit_iocb_pending = 1;
5248 /*
5249 * QLogic requires to wait after LINK REINIT for possible
5250 * PDISC or ADISC ELS commands
5251 */
5252 send_notify_ack = 0;
5253 break;
5254 }
5255
5256 case IMM_NTFY_PORT_LOGOUT:
5257 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5258 "qla_target(%d): Port logout (loop "
5259 "%#x, subcode %x)\n", vha->vp_idx,
5260 le16_to_cpu(iocb->u.isp24.nport_handle),
5261 iocb->u.isp24.status_subcode);
5262
5263 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5264 send_notify_ack = 0;
5265 /* The sessions will be cleared in the callback, if needed */
5266 break;
5267
5268 case IMM_NTFY_GLBL_TPRLO:
5269 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5270 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5271 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5272 send_notify_ack = 0;
5273 /* The sessions will be cleared in the callback, if needed */
5274 break;
5275
5276 case IMM_NTFY_PORT_CONFIG:
5277 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5278 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5279 status);
5280 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5281 send_notify_ack = 0;
5282 /* The sessions will be cleared in the callback, if needed */
5283 break;
5284
5285 case IMM_NTFY_GLBL_LOGO:
5286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5287 "qla_target(%d): Link failure detected\n",
5288 vha->vp_idx);
5289 /* I_T nexus loss */
5290 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5291 send_notify_ack = 0;
5292 break;
5293
5294 case IMM_NTFY_IOCB_OVERFLOW:
5295 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5296 "qla_target(%d): Cannot provide requested "
5297 "capability (IOCB overflowed the immediate notify "
5298 "resource count)\n", vha->vp_idx);
5299 break;
5300
5301 case IMM_NTFY_ABORT_TASK:
5302 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5303 "qla_target(%d): Abort Task (S %08x I %#x -> "
5304 "L %#x)\n", vha->vp_idx,
5305 le16_to_cpu(iocb->u.isp2x.seq_id),
5306 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5307 le16_to_cpu(iocb->u.isp2x.lun));
5308 if (qlt_abort_task(vha, iocb) == 0)
5309 send_notify_ack = 0;
5310 break;
5311
5312 case IMM_NTFY_RESOURCE:
5313 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5314 "qla_target(%d): Out of resources, host %ld\n",
5315 vha->vp_idx, vha->host_no);
5316 break;
5317
5318 case IMM_NTFY_MSG_RX:
5319 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5320 "qla_target(%d): Immediate notify task %x\n",
5321 vha->vp_idx, iocb->u.isp2x.task_flags);
5322 break;
5323
5324 case IMM_NTFY_ELS:
5325 if (qlt_24xx_handle_els(vha, iocb) == 0)
5326 send_notify_ack = 0;
5327 break;
5328 default:
5329 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5330 "qla_target(%d): Received unknown immediate "
5331 "notify status %x\n", vha->vp_idx, status);
5332 break;
5333 }
5334
5335 if (send_notify_ack)
5336 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5337 0, 0);
5338 }
5339
5340 /*
5341 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5342 * This function sends busy to ISP 2xxx or 24xx.
5343 */
__qlt_send_busy(struct qla_qpair * qpair,struct atio_from_isp * atio,uint16_t status)5344 static int __qlt_send_busy(struct qla_qpair *qpair,
5345 struct atio_from_isp *atio, uint16_t status)
5346 {
5347 struct scsi_qla_host *vha = qpair->vha;
5348 struct ctio7_to_24xx *ctio24;
5349 struct qla_hw_data *ha = vha->hw;
5350 request_t *pkt;
5351 struct fc_port *sess = NULL;
5352 unsigned long flags;
5353 u16 temp;
5354 port_id_t id;
5355
5356 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
5357
5358 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5359 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1);
5360 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5361 if (!sess) {
5362 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
5363 return 0;
5364 }
5365 /* Sending marker isn't necessary, since we called from ISR */
5366
5367 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
5368 if (!pkt) {
5369 ql_dbg(ql_dbg_io, vha, 0x3063,
5370 "qla_target(%d): %s failed: unable to allocate "
5371 "request packet", vha->vp_idx, __func__);
5372 return -ENOMEM;
5373 }
5374
5375 qpair->tgt_counters.num_q_full_sent++;
5376 pkt->entry_count = 1;
5377 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5378
5379 ctio24 = (struct ctio7_to_24xx *)pkt;
5380 ctio24->entry_type = CTIO_TYPE7;
5381 ctio24->nport_handle = cpu_to_le16(sess->loop_id);
5382 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
5383 ctio24->vp_index = vha->vp_idx;
5384 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
5385 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5386 temp = (atio->u.isp24.attr << 9) |
5387 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5388 CTIO7_FLAGS_DONT_RET_CTIO;
5389 ctio24->u.status1.flags = cpu_to_le16(temp);
5390 /*
5391 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5392 * if the explicit conformation is used.
5393 */
5394 ctio24->u.status1.ox_id =
5395 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
5396 ctio24->u.status1.scsi_status = cpu_to_le16(status);
5397
5398 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
5399
5400 if (ctio24->u.status1.residual != 0)
5401 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER);
5402
5403 /* Memory Barrier */
5404 wmb();
5405 if (qpair->reqq_start_iocbs)
5406 qpair->reqq_start_iocbs(qpair);
5407 else
5408 qla2x00_start_iocbs(vha, qpair->req);
5409 return 0;
5410 }
5411
5412 /*
5413 * This routine is used to allocate a command for either a QFull condition
5414 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5415 * out previously.
5416 */
5417 static void
qlt_alloc_qfull_cmd(struct scsi_qla_host * vha,struct atio_from_isp * atio,uint16_t status,int qfull)5418 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5419 struct atio_from_isp *atio, uint16_t status, int qfull)
5420 {
5421 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5422 struct qla_hw_data *ha = vha->hw;
5423 struct fc_port *sess;
5424 struct qla_tgt_cmd *cmd;
5425 unsigned long flags;
5426
5427 if (unlikely(tgt->tgt_stop)) {
5428 ql_dbg(ql_dbg_io, vha, 0x300a,
5429 "New command while device %p is shutting down\n", tgt);
5430 return;
5431 }
5432
5433 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5434 vha->hw->tgt.num_qfull_cmds_dropped++;
5435 if (vha->hw->tgt.num_qfull_cmds_dropped >
5436 vha->qla_stats.stat_max_qfull_cmds_dropped)
5437 vha->qla_stats.stat_max_qfull_cmds_dropped =
5438 vha->hw->tgt.num_qfull_cmds_dropped;
5439
5440 ql_dbg(ql_dbg_io, vha, 0x3068,
5441 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5442 vha->vp_idx, __func__,
5443 vha->hw->tgt.num_qfull_cmds_dropped);
5444
5445 qlt_chk_exch_leak_thresh_hold(vha);
5446 return;
5447 }
5448
5449 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5450 (vha, atio->u.isp24.fcp_hdr.s_id);
5451 if (!sess)
5452 return;
5453
5454 cmd = ha->tgt.tgt_ops->get_cmd(sess);
5455 if (!cmd) {
5456 ql_dbg(ql_dbg_io, vha, 0x3009,
5457 "qla_target(%d): %s: Allocation of cmd failed\n",
5458 vha->vp_idx, __func__);
5459
5460 vha->hw->tgt.num_qfull_cmds_dropped++;
5461 if (vha->hw->tgt.num_qfull_cmds_dropped >
5462 vha->qla_stats.stat_max_qfull_cmds_dropped)
5463 vha->qla_stats.stat_max_qfull_cmds_dropped =
5464 vha->hw->tgt.num_qfull_cmds_dropped;
5465
5466 qlt_chk_exch_leak_thresh_hold(vha);
5467 return;
5468 }
5469
5470 qlt_incr_num_pend_cmds(vha);
5471 INIT_LIST_HEAD(&cmd->cmd_list);
5472 memcpy(&cmd->atio, atio, sizeof(*atio));
5473
5474 cmd->tgt = vha->vha_tgt.qla_tgt;
5475 cmd->vha = vha;
5476 cmd->reset_count = ha->base_qpair->chip_reset;
5477 cmd->q_full = 1;
5478 cmd->qpair = ha->base_qpair;
5479
5480 if (qfull) {
5481 cmd->q_full = 1;
5482 /* NOTE: borrowing the state field to carry the status */
5483 cmd->state = status;
5484 } else
5485 cmd->term_exchg = 1;
5486
5487 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5488 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5489
5490 vha->hw->tgt.num_qfull_cmds_alloc++;
5491 if (vha->hw->tgt.num_qfull_cmds_alloc >
5492 vha->qla_stats.stat_max_qfull_cmds_alloc)
5493 vha->qla_stats.stat_max_qfull_cmds_alloc =
5494 vha->hw->tgt.num_qfull_cmds_alloc;
5495 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5496 }
5497
5498 static void
qlt_send_busy(struct qla_qpair * qpair,struct atio_from_isp * atio,uint16_t status)5499 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5500 uint16_t status)
5501 {
5502 int rc = 0;
5503 struct scsi_qla_host *vha = qpair->vha;
5504
5505 rc = __qlt_send_busy(qpair, atio, status);
5506 if (rc == -ENOMEM)
5507 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5508 }
5509
5510 static int
qlt_chk_qfull_thresh_hold(struct scsi_qla_host * vha,struct qla_qpair * qpair,struct atio_from_isp * atio,uint8_t ha_locked)5511 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5512 struct atio_from_isp *atio, uint8_t ha_locked)
5513 {
5514 struct qla_hw_data *ha = vha->hw;
5515 unsigned long flags;
5516
5517 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5518 return 0;
5519
5520 if (!ha_locked)
5521 spin_lock_irqsave(&ha->hardware_lock, flags);
5522 qlt_send_busy(qpair, atio, qla_sam_status);
5523 if (!ha_locked)
5524 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5525
5526 return 1;
5527 }
5528
5529 /* ha->hardware_lock supposed to be held on entry */
5530 /* called via callback from qla2xxx */
qlt_24xx_atio_pkt(struct scsi_qla_host * vha,struct atio_from_isp * atio,uint8_t ha_locked)5531 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5532 struct atio_from_isp *atio, uint8_t ha_locked)
5533 {
5534 struct qla_hw_data *ha = vha->hw;
5535 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5536 int rc;
5537 unsigned long flags = 0;
5538
5539 if (unlikely(tgt == NULL)) {
5540 ql_dbg(ql_dbg_tgt, vha, 0x3064,
5541 "ATIO pkt, but no tgt (ha %p)", ha);
5542 return;
5543 }
5544 /*
5545 * In tgt_stop mode we also should allow all requests to pass.
5546 * Otherwise, some commands can stuck.
5547 */
5548
5549 tgt->atio_irq_cmd_count++;
5550
5551 switch (atio->u.raw.entry_type) {
5552 case ATIO_TYPE7:
5553 if (unlikely(atio->u.isp24.exchange_addr ==
5554 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) {
5555 ql_dbg(ql_dbg_io, vha, 0x3065,
5556 "qla_target(%d): ATIO_TYPE7 "
5557 "received with UNKNOWN exchange address, "
5558 "sending QUEUE_FULL\n", vha->vp_idx);
5559 if (!ha_locked)
5560 spin_lock_irqsave(&ha->hardware_lock, flags);
5561 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
5562 if (!ha_locked)
5563 spin_unlock_irqrestore(&ha->hardware_lock,
5564 flags);
5565 break;
5566 }
5567
5568 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5569 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5570 atio, ha_locked);
5571 if (rc != 0) {
5572 tgt->atio_irq_cmd_count--;
5573 return;
5574 }
5575 rc = qlt_handle_cmd_for_atio(vha, atio);
5576 } else {
5577 rc = qlt_handle_task_mgmt(vha, atio);
5578 }
5579 if (unlikely(rc != 0)) {
5580 if (!ha_locked)
5581 spin_lock_irqsave(&ha->hardware_lock, flags);
5582 switch (rc) {
5583 case -ENODEV:
5584 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5585 "qla_target: Unable to send command to target\n");
5586 break;
5587 case -EBADF:
5588 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5589 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5590 qlt_send_term_exchange(ha->base_qpair, NULL,
5591 atio, 1, 0);
5592 break;
5593 case -EBUSY:
5594 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5595 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5596 vha->vp_idx);
5597 qlt_send_busy(ha->base_qpair, atio,
5598 tc_sam_status);
5599 break;
5600 default:
5601 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5602 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5603 vha->vp_idx);
5604 qlt_send_busy(ha->base_qpair, atio,
5605 qla_sam_status);
5606 break;
5607 }
5608 if (!ha_locked)
5609 spin_unlock_irqrestore(&ha->hardware_lock,
5610 flags);
5611 }
5612 break;
5613
5614 case IMMED_NOTIFY_TYPE:
5615 {
5616 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5617 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5618 "qla_target(%d): Received ATIO packet %x "
5619 "with error status %x\n", vha->vp_idx,
5620 atio->u.raw.entry_type,
5621 atio->u.isp2x.entry_status);
5622 break;
5623 }
5624 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5625
5626 if (!ha_locked)
5627 spin_lock_irqsave(&ha->hardware_lock, flags);
5628 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5629 if (!ha_locked)
5630 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5631 break;
5632 }
5633
5634 default:
5635 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5636 "qla_target(%d): Received unknown ATIO atio "
5637 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5638 break;
5639 }
5640
5641 tgt->atio_irq_cmd_count--;
5642 }
5643
5644 /*
5645 * qpair lock is assume to be held
5646 * rc = 0 : send terminate & abts respond
5647 * rc != 0: do not send term & abts respond
5648 */
qlt_chk_unresolv_exchg(struct scsi_qla_host * vha,struct qla_qpair * qpair,struct abts_resp_from_24xx_fw * entry)5649 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha,
5650 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry)
5651 {
5652 struct qla_hw_data *ha = vha->hw;
5653 int rc = 0;
5654
5655 /*
5656 * Detect unresolved exchange. If the same ABTS is unable
5657 * to terminate an existing command and the same ABTS loops
5658 * between FW & Driver, then force FW dump. Under 1 jiff,
5659 * we should see multiple loops.
5660 */
5661 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort &&
5662 qpair->retry_term_jiff == jiffies) {
5663 /* found existing exchange */
5664 qpair->retry_term_cnt++;
5665 if (qpair->retry_term_cnt >= 5) {
5666 rc = -EIO;
5667 qpair->retry_term_cnt = 0;
5668 ql_log(ql_log_warn, vha, 0xffff,
5669 "Unable to send ABTS Respond. Dumping firmware.\n");
5670 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer,
5671 vha, 0xffff, (uint8_t *)entry, sizeof(*entry));
5672
5673 if (qpair == ha->base_qpair)
5674 ha->isp_ops->fw_dump(vha);
5675 else
5676 qla2xxx_dump_fw(vha);
5677
5678 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5679 qla2xxx_wake_dpc(vha);
5680 }
5681 } else if (qpair->retry_term_jiff != jiffies) {
5682 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort;
5683 qpair->retry_term_cnt = 0;
5684 qpair->retry_term_jiff = jiffies;
5685 }
5686
5687 return rc;
5688 }
5689
5690
qlt_handle_abts_completion(struct scsi_qla_host * vha,struct rsp_que * rsp,response_t * pkt)5691 static void qlt_handle_abts_completion(struct scsi_qla_host *vha,
5692 struct rsp_que *rsp, response_t *pkt)
5693 {
5694 struct abts_resp_from_24xx_fw *entry =
5695 (struct abts_resp_from_24xx_fw *)pkt;
5696 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK;
5697 struct qla_tgt_mgmt_cmd *mcmd;
5698 struct qla_hw_data *ha = vha->hw;
5699
5700 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt);
5701 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) {
5702 ql_dbg(ql_dbg_async, vha, 0xe064,
5703 "qla_target(%d): ABTS Comp without mcmd\n",
5704 vha->vp_idx);
5705 return;
5706 }
5707
5708 if (mcmd)
5709 vha = mcmd->vha;
5710 vha->vha_tgt.qla_tgt->abts_resp_expected--;
5711
5712 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5713 "ABTS_RESP_24XX: compl_status %x\n",
5714 entry->compl_status);
5715
5716 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) {
5717 if (le32_to_cpu(entry->error_subcode1) == 0x1E &&
5718 le32_to_cpu(entry->error_subcode2) == 0) {
5719 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) {
5720 ha->tgt.tgt_ops->free_mcmd(mcmd);
5721 return;
5722 }
5723 qlt_24xx_retry_term_exchange(vha, rsp->qpair,
5724 pkt, mcmd);
5725 } else {
5726 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5727 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)",
5728 vha->vp_idx, entry->compl_status,
5729 entry->error_subcode1,
5730 entry->error_subcode2);
5731 ha->tgt.tgt_ops->free_mcmd(mcmd);
5732 }
5733 } else if (mcmd) {
5734 ha->tgt.tgt_ops->free_mcmd(mcmd);
5735 }
5736 }
5737
5738 /* ha->hardware_lock supposed to be held on entry */
5739 /* called via callback from qla2xxx */
qlt_response_pkt(struct scsi_qla_host * vha,struct rsp_que * rsp,response_t * pkt)5740 static void qlt_response_pkt(struct scsi_qla_host *vha,
5741 struct rsp_que *rsp, response_t *pkt)
5742 {
5743 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5744
5745 if (unlikely(tgt == NULL)) {
5746 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5747 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5748 vha->vp_idx, pkt->entry_type, vha->hw);
5749 return;
5750 }
5751
5752 /*
5753 * In tgt_stop mode we also should allow all requests to pass.
5754 * Otherwise, some commands can stuck.
5755 */
5756
5757 switch (pkt->entry_type) {
5758 case CTIO_CRC2:
5759 case CTIO_TYPE7:
5760 {
5761 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
5762
5763 qlt_do_ctio_completion(vha, rsp, entry->handle,
5764 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5765 entry);
5766 break;
5767 }
5768
5769 case ACCEPT_TGT_IO_TYPE:
5770 {
5771 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5772 int rc;
5773
5774 if (atio->u.isp2x.status !=
5775 cpu_to_le16(ATIO_CDB_VALID)) {
5776 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5777 "qla_target(%d): ATIO with error "
5778 "status %x received\n", vha->vp_idx,
5779 le16_to_cpu(atio->u.isp2x.status));
5780 break;
5781 }
5782
5783 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
5784 if (rc != 0)
5785 return;
5786
5787 rc = qlt_handle_cmd_for_atio(vha, atio);
5788 if (unlikely(rc != 0)) {
5789 switch (rc) {
5790 case -ENODEV:
5791 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5792 "qla_target: Unable to send command to target\n");
5793 break;
5794 case -EBADF:
5795 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5796 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5797 qlt_send_term_exchange(rsp->qpair, NULL,
5798 atio, 1, 0);
5799 break;
5800 case -EBUSY:
5801 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5802 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5803 vha->vp_idx);
5804 qlt_send_busy(rsp->qpair, atio,
5805 tc_sam_status);
5806 break;
5807 default:
5808 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5809 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5810 vha->vp_idx);
5811 qlt_send_busy(rsp->qpair, atio,
5812 qla_sam_status);
5813 break;
5814 }
5815 }
5816 }
5817 break;
5818
5819 case CONTINUE_TGT_IO_TYPE:
5820 {
5821 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5822
5823 qlt_do_ctio_completion(vha, rsp, entry->handle,
5824 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5825 entry);
5826 break;
5827 }
5828
5829 case CTIO_A64_TYPE:
5830 {
5831 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
5832
5833 qlt_do_ctio_completion(vha, rsp, entry->handle,
5834 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5835 entry);
5836 break;
5837 }
5838
5839 case IMMED_NOTIFY_TYPE:
5840 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5841 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5842 break;
5843
5844 case NOTIFY_ACK_TYPE:
5845 if (tgt->notify_ack_expected > 0) {
5846 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5847
5848 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5849 "NOTIFY_ACK seq %08x status %x\n",
5850 le16_to_cpu(entry->u.isp2x.seq_id),
5851 le16_to_cpu(entry->u.isp2x.status));
5852 tgt->notify_ack_expected--;
5853 if (entry->u.isp2x.status !=
5854 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
5855 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5856 "qla_target(%d): NOTIFY_ACK "
5857 "failed %x\n", vha->vp_idx,
5858 le16_to_cpu(entry->u.isp2x.status));
5859 }
5860 } else {
5861 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5862 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5863 vha->vp_idx);
5864 }
5865 break;
5866
5867 case ABTS_RECV_24XX:
5868 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5869 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5870 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5871 break;
5872
5873 case ABTS_RESP_24XX:
5874 if (tgt->abts_resp_expected > 0) {
5875 qlt_handle_abts_completion(vha, rsp, pkt);
5876 } else {
5877 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5878 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5879 "received\n", vha->vp_idx);
5880 }
5881 break;
5882
5883 default:
5884 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5885 "qla_target(%d): Received unknown response pkt "
5886 "type %x\n", vha->vp_idx, pkt->entry_type);
5887 break;
5888 }
5889
5890 }
5891
5892 /*
5893 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5894 */
qlt_async_event(uint16_t code,struct scsi_qla_host * vha,uint16_t * mailbox)5895 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5896 uint16_t *mailbox)
5897 {
5898 struct qla_hw_data *ha = vha->hw;
5899 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5900 int login_code;
5901
5902 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
5903 return;
5904
5905 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5906 IS_QLA2100(ha))
5907 return;
5908 /*
5909 * In tgt_stop mode we also should allow all requests to pass.
5910 * Otherwise, some commands can stuck.
5911 */
5912
5913
5914 switch (code) {
5915 case MBA_RESET: /* Reset */
5916 case MBA_SYSTEM_ERR: /* System Error */
5917 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5918 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5919 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5920 "qla_target(%d): System error async event %#x "
5921 "occurred", vha->vp_idx, code);
5922 break;
5923 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5924 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5925 break;
5926
5927 case MBA_LOOP_UP:
5928 {
5929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
5930 "qla_target(%d): Async LOOP_UP occurred "
5931 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5932 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
5933 if (tgt->link_reinit_iocb_pending) {
5934 qlt_send_notify_ack(ha->base_qpair,
5935 &tgt->link_reinit_iocb,
5936 0, 0, 0, 0, 0, 0);
5937 tgt->link_reinit_iocb_pending = 0;
5938 }
5939 break;
5940 }
5941
5942 case MBA_LIP_OCCURRED:
5943 case MBA_LOOP_DOWN:
5944 case MBA_LIP_RESET:
5945 case MBA_RSCN_UPDATE:
5946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
5947 "qla_target(%d): Async event %#x occurred "
5948 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5949 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
5950 break;
5951
5952 case MBA_REJECTED_FCP_CMD:
5953 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5954 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5955 vha->vp_idx,
5956 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
5957
5958 if (mailbox[3] == 1) {
5959 /* exchange starvation. */
5960 vha->hw->exch_starvation++;
5961 if (vha->hw->exch_starvation > 5) {
5962 ql_log(ql_log_warn, vha, 0xd03a,
5963 "Exchange starvation-. Resetting RISC\n");
5964
5965 vha->hw->exch_starvation = 0;
5966 if (IS_P3P_TYPE(vha->hw))
5967 set_bit(FCOE_CTX_RESET_NEEDED,
5968 &vha->dpc_flags);
5969 else
5970 set_bit(ISP_ABORT_NEEDED,
5971 &vha->dpc_flags);
5972 qla2xxx_wake_dpc(vha);
5973 }
5974 }
5975 break;
5976
5977 case MBA_PORT_UPDATE:
5978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5979 "qla_target(%d): Port update async event %#x "
5980 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
5981 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5982 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
5983
5984 login_code = mailbox[2];
5985 if (login_code == 0x4) {
5986 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5987 "Async MB 2: Got PLOGI Complete\n");
5988 vha->hw->exch_starvation = 0;
5989 } else if (login_code == 0x7)
5990 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5991 "Async MB 2: Port Logged Out\n");
5992 break;
5993 default:
5994 break;
5995 }
5996
5997 }
5998
qlt_get_port_database(struct scsi_qla_host * vha,uint16_t loop_id)5999 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
6000 uint16_t loop_id)
6001 {
6002 fc_port_t *fcport, *tfcp, *del;
6003 int rc;
6004 unsigned long flags;
6005 u8 newfcport = 0;
6006
6007 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
6008 if (!fcport) {
6009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
6010 "qla_target(%d): Allocation of tmp FC port failed",
6011 vha->vp_idx);
6012 return NULL;
6013 }
6014
6015 fcport->loop_id = loop_id;
6016
6017 rc = qla24xx_gpdb_wait(vha, fcport, 0);
6018 if (rc != QLA_SUCCESS) {
6019 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
6020 "qla_target(%d): Failed to retrieve fcport "
6021 "information -- get_port_database() returned %x "
6022 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
6023 kfree(fcport);
6024 return NULL;
6025 }
6026
6027 del = NULL;
6028 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
6029 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
6030
6031 if (tfcp) {
6032 tfcp->d_id = fcport->d_id;
6033 tfcp->port_type = fcport->port_type;
6034 tfcp->supported_classes = fcport->supported_classes;
6035 tfcp->flags |= fcport->flags;
6036 tfcp->scan_state = QLA_FCPORT_FOUND;
6037
6038 del = fcport;
6039 fcport = tfcp;
6040 } else {
6041 if (vha->hw->current_topology == ISP_CFG_F)
6042 fcport->flags |= FCF_FABRIC_DEVICE;
6043
6044 list_add_tail(&fcport->list, &vha->vp_fcports);
6045 if (!IS_SW_RESV_ADDR(fcport->d_id))
6046 vha->fcport_count++;
6047 fcport->login_gen++;
6048 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE);
6049 fcport->login_succ = 1;
6050 newfcport = 1;
6051 }
6052
6053 fcport->deleted = 0;
6054 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
6055
6056 switch (vha->host->active_mode) {
6057 case MODE_INITIATOR:
6058 case MODE_DUAL:
6059 if (newfcport) {
6060 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
6061 qla24xx_sched_upd_fcport(fcport);
6062 } else {
6063 ql_dbg(ql_dbg_disc, vha, 0x20ff,
6064 "%s %d %8phC post gpsc fcp_cnt %d\n",
6065 __func__, __LINE__, fcport->port_name, vha->fcport_count);
6066 qla24xx_post_gpsc_work(vha, fcport);
6067 }
6068 }
6069 break;
6070
6071 case MODE_TARGET:
6072 default:
6073 break;
6074 }
6075 if (del)
6076 qla2x00_free_fcport(del);
6077
6078 return fcport;
6079 }
6080
6081 /* Must be called under tgt_mutex */
qlt_make_local_sess(struct scsi_qla_host * vha,be_id_t s_id)6082 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
6083 be_id_t s_id)
6084 {
6085 struct fc_port *sess = NULL;
6086 fc_port_t *fcport = NULL;
6087 int rc, global_resets;
6088 uint16_t loop_id = 0;
6089
6090 if (s_id.domain == 0xFF && s_id.area == 0xFC) {
6091 /*
6092 * This is Domain Controller, so it should be
6093 * OK to drop SCSI commands from it.
6094 */
6095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
6096 "Unable to find initiator with S_ID %x:%x:%x",
6097 s_id.domain, s_id.area, s_id.al_pa);
6098 return NULL;
6099 }
6100
6101 mutex_lock(&vha->vha_tgt.tgt_mutex);
6102
6103 retry:
6104 global_resets =
6105 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
6106
6107 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
6108 if (rc != 0) {
6109 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6110
6111 ql_log(ql_log_info, vha, 0xf071,
6112 "qla_target(%d): Unable to find "
6113 "initiator with S_ID %x:%x:%x",
6114 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa);
6115
6116 if (rc == -ENOENT) {
6117 qlt_port_logo_t logo;
6118
6119 logo.id = be_to_port_id(s_id);
6120 logo.cmd_count = 1;
6121 qlt_send_first_logo(vha, &logo);
6122 }
6123
6124 return NULL;
6125 }
6126
6127 fcport = qlt_get_port_database(vha, loop_id);
6128 if (!fcport) {
6129 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6130 return NULL;
6131 }
6132
6133 if (global_resets !=
6134 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
6135 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
6136 "qla_target(%d): global reset during session discovery "
6137 "(counter was %d, new %d), retrying", vha->vp_idx,
6138 global_resets,
6139 atomic_read(&vha->vha_tgt.
6140 qla_tgt->tgt_global_resets_count));
6141 goto retry;
6142 }
6143
6144 sess = qlt_create_sess(vha, fcport, true);
6145
6146 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6147
6148 return sess;
6149 }
6150
qlt_abort_work(struct qla_tgt * tgt,struct qla_tgt_sess_work_param * prm)6151 static void qlt_abort_work(struct qla_tgt *tgt,
6152 struct qla_tgt_sess_work_param *prm)
6153 {
6154 struct scsi_qla_host *vha = tgt->vha;
6155 struct qla_hw_data *ha = vha->hw;
6156 struct fc_port *sess = NULL;
6157 unsigned long flags = 0, flags2 = 0;
6158 be_id_t s_id;
6159 int rc;
6160
6161 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6162
6163 if (tgt->tgt_stop)
6164 goto out_term2;
6165
6166 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id);
6167
6168 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6169 if (!sess) {
6170 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6171
6172 sess = qlt_make_local_sess(vha, s_id);
6173 /* sess has got an extra creation ref */
6174
6175 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
6176 if (!sess)
6177 goto out_term2;
6178 } else {
6179 if (sess->deleted) {
6180 sess = NULL;
6181 goto out_term2;
6182 }
6183
6184 if (!kref_get_unless_zero(&sess->sess_kref)) {
6185 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
6186 "%s: kref_get fail %8phC \n",
6187 __func__, sess->port_name);
6188 sess = NULL;
6189 goto out_term2;
6190 }
6191 }
6192
6193 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
6194 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6195
6196 ha->tgt.tgt_ops->put_sess(sess);
6197
6198 if (rc != 0)
6199 goto out_term;
6200 return;
6201
6202 out_term2:
6203 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6204
6205 out_term:
6206 spin_lock_irqsave(&ha->hardware_lock, flags);
6207 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6208 FCP_TMF_REJECTED, false);
6209 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6210 }
6211
qlt_sess_work_fn(struct work_struct * work)6212 static void qlt_sess_work_fn(struct work_struct *work)
6213 {
6214 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6215 struct scsi_qla_host *vha = tgt->vha;
6216 unsigned long flags;
6217
6218 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6219
6220 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6221 while (!list_empty(&tgt->sess_works_list)) {
6222 struct qla_tgt_sess_work_param *prm = list_entry(
6223 tgt->sess_works_list.next, typeof(*prm),
6224 sess_works_list_entry);
6225
6226 /*
6227 * This work can be scheduled on several CPUs at time, so we
6228 * must delete the entry to eliminate double processing
6229 */
6230 list_del(&prm->sess_works_list_entry);
6231
6232 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6233
6234 switch (prm->type) {
6235 case QLA_TGT_SESS_WORK_ABORT:
6236 qlt_abort_work(tgt, prm);
6237 break;
6238 default:
6239 BUG_ON(1);
6240 break;
6241 }
6242
6243 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6244
6245 kfree(prm);
6246 }
6247 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6248 }
6249
6250 /* Must be called under tgt_host_action_mutex */
qlt_add_target(struct qla_hw_data * ha,struct scsi_qla_host * base_vha)6251 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6252 {
6253 struct qla_tgt *tgt;
6254 int rc, i;
6255 struct qla_qpair_hint *h;
6256
6257 if (!QLA_TGT_MODE_ENABLED())
6258 return 0;
6259
6260 if (!IS_TGT_MODE_CAPABLE(ha)) {
6261 ql_log(ql_log_warn, base_vha, 0xe070,
6262 "This adapter does not support target mode.\n");
6263 return 0;
6264 }
6265
6266 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
6267 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
6268
6269 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
6270
6271 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6272 if (!tgt) {
6273 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6274 "Unable to allocate struct qla_tgt\n");
6275 return -ENOMEM;
6276 }
6277
6278 tgt->qphints = kcalloc(ha->max_qpairs + 1,
6279 sizeof(struct qla_qpair_hint),
6280 GFP_KERNEL);
6281 if (!tgt->qphints) {
6282 kfree(tgt);
6283 ql_log(ql_log_warn, base_vha, 0x0197,
6284 "Unable to allocate qpair hints.\n");
6285 return -ENOMEM;
6286 }
6287
6288 qla2xxx_driver_template.supported_mode |= MODE_TARGET;
6289
6290 rc = btree_init64(&tgt->lun_qpair_map);
6291 if (rc) {
6292 kfree(tgt->qphints);
6293 kfree(tgt);
6294 ql_log(ql_log_info, base_vha, 0x0198,
6295 "Unable to initialize lun_qpair_map btree\n");
6296 return -EIO;
6297 }
6298 h = &tgt->qphints[0];
6299 h->qpair = ha->base_qpair;
6300 INIT_LIST_HEAD(&h->hint_elem);
6301 h->cpuid = ha->base_qpair->cpuid;
6302 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6303
6304 for (i = 0; i < ha->max_qpairs; i++) {
6305 unsigned long flags;
6306
6307 struct qla_qpair *qpair = ha->queue_pair_map[i];
6308
6309 h = &tgt->qphints[i + 1];
6310 INIT_LIST_HEAD(&h->hint_elem);
6311 if (qpair) {
6312 h->qpair = qpair;
6313 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6314 list_add_tail(&h->hint_elem, &qpair->hints_list);
6315 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6316 h->cpuid = qpair->cpuid;
6317 }
6318 }
6319
6320 tgt->ha = ha;
6321 tgt->vha = base_vha;
6322 init_waitqueue_head(&tgt->waitQ);
6323 spin_lock_init(&tgt->sess_work_lock);
6324 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6325 INIT_LIST_HEAD(&tgt->sess_works_list);
6326 atomic_set(&tgt->tgt_global_resets_count, 0);
6327
6328 base_vha->vha_tgt.qla_tgt = tgt;
6329
6330 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6331 "qla_target(%d): using 64 Bit PCI addressing",
6332 base_vha->vp_idx);
6333 /* 3 is reserved */
6334 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6335
6336 mutex_lock(&qla_tgt_mutex);
6337 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6338 mutex_unlock(&qla_tgt_mutex);
6339
6340 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6341 ha->tgt.tgt_ops->add_target(base_vha);
6342
6343 return 0;
6344 }
6345
6346 /* Must be called under tgt_host_action_mutex */
qlt_remove_target(struct qla_hw_data * ha,struct scsi_qla_host * vha)6347 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6348 {
6349 if (!vha->vha_tgt.qla_tgt)
6350 return 0;
6351
6352 if (vha->fc_vport) {
6353 qlt_release(vha->vha_tgt.qla_tgt);
6354 return 0;
6355 }
6356
6357 /* free left over qfull cmds */
6358 qlt_init_term_exchange(vha);
6359
6360 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6361 vha->host_no, ha);
6362 qlt_release(vha->vha_tgt.qla_tgt);
6363
6364 return 0;
6365 }
6366
qla_remove_hostmap(struct qla_hw_data * ha)6367 void qla_remove_hostmap(struct qla_hw_data *ha)
6368 {
6369 struct scsi_qla_host *node;
6370 u32 key = 0;
6371
6372 btree_for_each_safe32(&ha->host_map, key, node)
6373 btree_remove32(&ha->host_map, key);
6374
6375 btree_destroy32(&ha->host_map);
6376 }
6377
qlt_lport_dump(struct scsi_qla_host * vha,u64 wwpn,unsigned char * b)6378 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6379 unsigned char *b)
6380 {
6381 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name);
6382 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name);
6383 put_unaligned_be64(wwpn, b);
6384 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b);
6385 }
6386
6387 /**
6388 * qlt_lport_register - register lport with external module
6389 *
6390 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6391 * @phys_wwpn: physical port WWPN
6392 * @npiv_wwpn: NPIV WWPN
6393 * @npiv_wwnn: NPIV WWNN
6394 * @callback: lport initialization callback for tcm_qla2xxx code
6395 */
qlt_lport_register(void * target_lport_ptr,u64 phys_wwpn,u64 npiv_wwpn,u64 npiv_wwnn,int (* callback)(struct scsi_qla_host *,void *,u64,u64))6396 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6397 u64 npiv_wwpn, u64 npiv_wwnn,
6398 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
6399 {
6400 struct qla_tgt *tgt;
6401 struct scsi_qla_host *vha;
6402 struct qla_hw_data *ha;
6403 struct Scsi_Host *host;
6404 unsigned long flags;
6405 int rc;
6406 u8 b[WWN_SIZE];
6407
6408 mutex_lock(&qla_tgt_mutex);
6409 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6410 vha = tgt->vha;
6411 ha = vha->hw;
6412
6413 host = vha->host;
6414 if (!host)
6415 continue;
6416
6417 if (!(host->hostt->supported_mode & MODE_TARGET))
6418 continue;
6419
6420 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6421 continue;
6422
6423 spin_lock_irqsave(&ha->hardware_lock, flags);
6424 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
6425 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6426 host->host_no);
6427 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6428 continue;
6429 }
6430 if (tgt->tgt_stop) {
6431 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6432 host->host_no);
6433 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6434 continue;
6435 }
6436 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6437
6438 if (!scsi_host_get(host)) {
6439 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6440 "Unable to scsi_host_get() for"
6441 " qla2xxx scsi_host\n");
6442 continue;
6443 }
6444 qlt_lport_dump(vha, phys_wwpn, b);
6445
6446 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6447 scsi_host_put(host);
6448 continue;
6449 }
6450 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6451 if (rc != 0)
6452 scsi_host_put(host);
6453
6454 mutex_unlock(&qla_tgt_mutex);
6455 return rc;
6456 }
6457 mutex_unlock(&qla_tgt_mutex);
6458
6459 return -ENODEV;
6460 }
6461 EXPORT_SYMBOL(qlt_lport_register);
6462
6463 /**
6464 * qlt_lport_deregister - Degister lport
6465 *
6466 * @vha: Registered scsi_qla_host pointer
6467 */
qlt_lport_deregister(struct scsi_qla_host * vha)6468 void qlt_lport_deregister(struct scsi_qla_host *vha)
6469 {
6470 struct qla_hw_data *ha = vha->hw;
6471 struct Scsi_Host *sh = vha->host;
6472 /*
6473 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6474 */
6475 vha->vha_tgt.target_lport_ptr = NULL;
6476 ha->tgt.tgt_ops = NULL;
6477 /*
6478 * Release the Scsi_Host reference for the underlying qla2xxx host
6479 */
6480 scsi_host_put(sh);
6481 }
6482 EXPORT_SYMBOL(qlt_lport_deregister);
6483
6484 /* Must be called under HW lock */
qlt_set_mode(struct scsi_qla_host * vha)6485 void qlt_set_mode(struct scsi_qla_host *vha)
6486 {
6487 switch (vha->qlini_mode) {
6488 case QLA2XXX_INI_MODE_DISABLED:
6489 case QLA2XXX_INI_MODE_EXCLUSIVE:
6490 vha->host->active_mode = MODE_TARGET;
6491 break;
6492 case QLA2XXX_INI_MODE_ENABLED:
6493 vha->host->active_mode = MODE_INITIATOR;
6494 break;
6495 case QLA2XXX_INI_MODE_DUAL:
6496 vha->host->active_mode = MODE_DUAL;
6497 break;
6498 default:
6499 break;
6500 }
6501 }
6502
6503 /* Must be called under HW lock */
qlt_clear_mode(struct scsi_qla_host * vha)6504 static void qlt_clear_mode(struct scsi_qla_host *vha)
6505 {
6506 switch (vha->qlini_mode) {
6507 case QLA2XXX_INI_MODE_DISABLED:
6508 vha->host->active_mode = MODE_UNKNOWN;
6509 break;
6510 case QLA2XXX_INI_MODE_EXCLUSIVE:
6511 vha->host->active_mode = MODE_INITIATOR;
6512 break;
6513 case QLA2XXX_INI_MODE_ENABLED:
6514 case QLA2XXX_INI_MODE_DUAL:
6515 vha->host->active_mode = MODE_INITIATOR;
6516 break;
6517 default:
6518 break;
6519 }
6520 }
6521
6522 /*
6523 * qla_tgt_enable_vha - NO LOCK HELD
6524 *
6525 * host_reset, bring up w/ Target Mode Enabled
6526 */
6527 void
qlt_enable_vha(struct scsi_qla_host * vha)6528 qlt_enable_vha(struct scsi_qla_host *vha)
6529 {
6530 struct qla_hw_data *ha = vha->hw;
6531 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6532 unsigned long flags;
6533 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
6534
6535 if (!tgt) {
6536 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6537 "Unable to locate qla_tgt pointer from"
6538 " struct qla_hw_data\n");
6539 dump_stack();
6540 return;
6541 }
6542 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6543 return;
6544
6545 if (ha->tgt.num_act_qpairs > ha->max_qpairs)
6546 ha->tgt.num_act_qpairs = ha->max_qpairs;
6547 spin_lock_irqsave(&ha->hardware_lock, flags);
6548 tgt->tgt_stopped = 0;
6549 qlt_set_mode(vha);
6550 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6551
6552 mutex_lock(&ha->optrom_mutex);
6553 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
6554 "%s.\n", __func__);
6555 if (vha->vp_idx) {
6556 qla24xx_disable_vp(vha);
6557 qla24xx_enable_vp(vha);
6558 } else {
6559 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6560 qla2xxx_wake_dpc(base_vha);
6561 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) !=
6562 QLA_SUCCESS);
6563 }
6564 mutex_unlock(&ha->optrom_mutex);
6565 }
6566 EXPORT_SYMBOL(qlt_enable_vha);
6567
6568 /*
6569 * qla_tgt_disable_vha - NO LOCK HELD
6570 *
6571 * Disable Target Mode and reset the adapter
6572 */
qlt_disable_vha(struct scsi_qla_host * vha)6573 static void qlt_disable_vha(struct scsi_qla_host *vha)
6574 {
6575 struct qla_hw_data *ha = vha->hw;
6576 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
6577 unsigned long flags;
6578
6579 if (!tgt) {
6580 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6581 "Unable to locate qla_tgt pointer from"
6582 " struct qla_hw_data\n");
6583 dump_stack();
6584 return;
6585 }
6586
6587 spin_lock_irqsave(&ha->hardware_lock, flags);
6588 qlt_clear_mode(vha);
6589 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6590
6591 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6592 qla2xxx_wake_dpc(vha);
6593
6594 /*
6595 * We are expecting the offline state.
6596 * QLA_FUNCTION_FAILED means that adapter is offline.
6597 */
6598 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
6599 ql_dbg(ql_dbg_tgt, vha, 0xe081,
6600 "adapter is offline\n");
6601 }
6602
6603 /*
6604 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6605 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6606 * members.
6607 */
6608 void
qlt_vport_create(struct scsi_qla_host * vha,struct qla_hw_data * ha)6609 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6610 {
6611 vha->vha_tgt.qla_tgt = NULL;
6612
6613 mutex_init(&vha->vha_tgt.tgt_mutex);
6614 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
6615
6616 INIT_LIST_HEAD(&vha->unknown_atio_list);
6617 INIT_DELAYED_WORK(&vha->unknown_atio_work, qlt_unknown_atio_work_fn);
6618
6619 qlt_clear_mode(vha);
6620
6621 /*
6622 * NOTE: Currently the value is kept the same for <24xx and
6623 * >=24xx ISPs. If it is necessary to change it,
6624 * the check should be added for specific ISPs,
6625 * assigning the value appropriately.
6626 */
6627 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
6628
6629 qlt_add_target(ha, vha);
6630 }
6631
6632 u8
qlt_rff_id(struct scsi_qla_host * vha)6633 qlt_rff_id(struct scsi_qla_host *vha)
6634 {
6635 u8 fc4_feature = 0;
6636 /*
6637 * FC-4 Feature bit 0 indicates target functionality to the name server.
6638 */
6639 if (qla_tgt_mode_enabled(vha)) {
6640 fc4_feature = BIT_0;
6641 } else if (qla_ini_mode_enabled(vha)) {
6642 fc4_feature = BIT_1;
6643 } else if (qla_dual_mode_enabled(vha))
6644 fc4_feature = BIT_0 | BIT_1;
6645
6646 return fc4_feature;
6647 }
6648
6649 /*
6650 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6651 * @ha: HA context
6652 *
6653 * Beginning of ATIO ring has initialization control block already built
6654 * by nvram config routine.
6655 *
6656 * Returns 0 on success.
6657 */
6658 void
qlt_init_atio_q_entries(struct scsi_qla_host * vha)6659 qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6660 {
6661 struct qla_hw_data *ha = vha->hw;
6662 uint16_t cnt;
6663 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6664
6665 if (qla_ini_mode_enabled(vha))
6666 return;
6667
6668 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6669 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
6670 pkt++;
6671 }
6672
6673 }
6674
6675 /*
6676 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6677 * @ha: SCSI driver HA context
6678 */
6679 void
qlt_24xx_process_atio_queue(struct scsi_qla_host * vha,uint8_t ha_locked)6680 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
6681 {
6682 struct qla_hw_data *ha = vha->hw;
6683 struct atio_from_isp *pkt;
6684 int cnt, i;
6685
6686 if (!ha->flags.fw_started)
6687 return;
6688
6689 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6690 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
6691 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6692 cnt = pkt->u.raw.entry_count;
6693
6694 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6695 /*
6696 * This packet is corrupted. The header + payload
6697 * can not be trusted. There is no point in passing
6698 * it further up.
6699 */
6700 ql_log(ql_log_warn, vha, 0xd03c,
6701 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6702 &pkt->u.isp24.fcp_hdr.s_id,
6703 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6704 pkt->u.isp24.exchange_addr, pkt);
6705
6706 adjust_corrupted_atio(pkt);
6707 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6708 ha_locked, 0);
6709 } else {
6710 qlt_24xx_atio_pkt_all_vps(vha,
6711 (struct atio_from_isp *)pkt, ha_locked);
6712 }
6713
6714 for (i = 0; i < cnt; i++) {
6715 ha->tgt.atio_ring_index++;
6716 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6717 ha->tgt.atio_ring_index = 0;
6718 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6719 } else
6720 ha->tgt.atio_ring_ptr++;
6721
6722 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
6723 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6724 }
6725 wmb();
6726 }
6727
6728 /* Adjust ring index */
6729 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
6730 }
6731
6732 void
qlt_24xx_config_rings(struct scsi_qla_host * vha)6733 qlt_24xx_config_rings(struct scsi_qla_host *vha)
6734 {
6735 struct qla_hw_data *ha = vha->hw;
6736 struct qla_msix_entry *msix = &ha->msix_entries[2];
6737 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6738
6739 if (!QLA_TGT_MODE_ENABLED())
6740 return;
6741
6742 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0);
6743 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0);
6744 rd_reg_dword(ISP_ATIO_Q_OUT(vha));
6745
6746 if (ha->flags.msix_enabled) {
6747 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
6748 icb->msix_atio = cpu_to_le16(msix->entry);
6749 icb->firmware_options_2 &= cpu_to_le32(~BIT_26);
6750 ql_dbg(ql_dbg_init, vha, 0xf072,
6751 "Registering ICB vector 0x%x for atio que.\n",
6752 msix->entry);
6753 }
6754 } else {
6755 /* INTx|MSI */
6756 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
6757 icb->msix_atio = 0;
6758 icb->firmware_options_2 |= cpu_to_le32(BIT_26);
6759 ql_dbg(ql_dbg_init, vha, 0xf072,
6760 "%s: Use INTx for ATIOQ.\n", __func__);
6761 }
6762 }
6763 }
6764
6765 void
qlt_24xx_config_nvram_stage1(struct scsi_qla_host * vha,struct nvram_24xx * nv)6766 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6767 {
6768 struct qla_hw_data *ha = vha->hw;
6769 u32 tmp;
6770
6771 if (!QLA_TGT_MODE_ENABLED())
6772 return;
6773
6774 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6775 if (!ha->tgt.saved_set) {
6776 /* We save only once */
6777 ha->tgt.saved_exchange_count = nv->exchange_count;
6778 ha->tgt.saved_firmware_options_1 =
6779 nv->firmware_options_1;
6780 ha->tgt.saved_firmware_options_2 =
6781 nv->firmware_options_2;
6782 ha->tgt.saved_firmware_options_3 =
6783 nv->firmware_options_3;
6784 ha->tgt.saved_set = 1;
6785 }
6786
6787 if (qla_tgt_mode_enabled(vha))
6788 nv->exchange_count = cpu_to_le16(0xFFFF);
6789 else /* dual */
6790 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
6791
6792 /* Enable target mode */
6793 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6794
6795 /* Disable ini mode, if requested */
6796 if (qla_tgt_mode_enabled(vha))
6797 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6798
6799 /* Disable Full Login after LIP */
6800 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6801 /* Enable initial LIP */
6802 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6803 if (ql2xtgt_tape_enable)
6804 /* Enable FC Tape support */
6805 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6806 else
6807 /* Disable FC Tape support */
6808 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6809
6810 /* Disable Full Login after LIP */
6811 nv->host_p &= cpu_to_le32(~BIT_10);
6812
6813 /*
6814 * clear BIT 15 explicitly as we have seen at least
6815 * a couple of instances where this was set and this
6816 * was causing the firmware to not be initialized.
6817 */
6818 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6819 /* Enable target PRLI control */
6820 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6821
6822 if (IS_QLA25XX(ha)) {
6823 /* Change Loop-prefer to Pt-Pt */
6824 tmp = ~(BIT_4|BIT_5|BIT_6);
6825 nv->firmware_options_2 &= cpu_to_le32(tmp);
6826 tmp = P2P << 4;
6827 nv->firmware_options_2 |= cpu_to_le32(tmp);
6828 }
6829 } else {
6830 if (ha->tgt.saved_set) {
6831 nv->exchange_count = ha->tgt.saved_exchange_count;
6832 nv->firmware_options_1 =
6833 ha->tgt.saved_firmware_options_1;
6834 nv->firmware_options_2 =
6835 ha->tgt.saved_firmware_options_2;
6836 nv->firmware_options_3 =
6837 ha->tgt.saved_firmware_options_3;
6838 }
6839 return;
6840 }
6841
6842 if (ha->base_qpair->enable_class_2) {
6843 if (vha->flags.init_done)
6844 fc_host_supported_classes(vha->host) =
6845 FC_COS_CLASS2 | FC_COS_CLASS3;
6846
6847 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6848 } else {
6849 if (vha->flags.init_done)
6850 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6851
6852 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6853 }
6854 }
6855
6856 void
qlt_24xx_config_nvram_stage2(struct scsi_qla_host * vha,struct init_cb_24xx * icb)6857 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6858 struct init_cb_24xx *icb)
6859 {
6860 struct qla_hw_data *ha = vha->hw;
6861
6862 if (!QLA_TGT_MODE_ENABLED())
6863 return;
6864
6865 if (ha->tgt.node_name_set) {
6866 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6867 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6868 }
6869 }
6870
6871 void
qlt_81xx_config_nvram_stage1(struct scsi_qla_host * vha,struct nvram_81xx * nv)6872 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6873 {
6874 struct qla_hw_data *ha = vha->hw;
6875 u32 tmp;
6876
6877 if (!QLA_TGT_MODE_ENABLED())
6878 return;
6879
6880 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
6881 if (!ha->tgt.saved_set) {
6882 /* We save only once */
6883 ha->tgt.saved_exchange_count = nv->exchange_count;
6884 ha->tgt.saved_firmware_options_1 =
6885 nv->firmware_options_1;
6886 ha->tgt.saved_firmware_options_2 =
6887 nv->firmware_options_2;
6888 ha->tgt.saved_firmware_options_3 =
6889 nv->firmware_options_3;
6890 ha->tgt.saved_set = 1;
6891 }
6892
6893 if (qla_tgt_mode_enabled(vha))
6894 nv->exchange_count = cpu_to_le16(0xFFFF);
6895 else /* dual */
6896 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
6897
6898 /* Enable target mode */
6899 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
6900
6901 /* Disable ini mode, if requested */
6902 if (qla_tgt_mode_enabled(vha))
6903 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
6904 /* Disable Full Login after LIP */
6905 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
6906 /* Enable initial LIP */
6907 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
6908 /*
6909 * clear BIT 15 explicitly as we have seen at
6910 * least a couple of instances where this was set
6911 * and this was causing the firmware to not be
6912 * initialized.
6913 */
6914 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
6915 if (ql2xtgt_tape_enable)
6916 /* Enable FC tape support */
6917 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6918 else
6919 /* Disable FC tape support */
6920 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6921
6922 /* Disable Full Login after LIP */
6923 nv->host_p &= cpu_to_le32(~BIT_10);
6924 /* Enable target PRLI control */
6925 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
6926
6927 /* Change Loop-prefer to Pt-Pt */
6928 tmp = ~(BIT_4|BIT_5|BIT_6);
6929 nv->firmware_options_2 &= cpu_to_le32(tmp);
6930 tmp = P2P << 4;
6931 nv->firmware_options_2 |= cpu_to_le32(tmp);
6932 } else {
6933 if (ha->tgt.saved_set) {
6934 nv->exchange_count = ha->tgt.saved_exchange_count;
6935 nv->firmware_options_1 =
6936 ha->tgt.saved_firmware_options_1;
6937 nv->firmware_options_2 =
6938 ha->tgt.saved_firmware_options_2;
6939 nv->firmware_options_3 =
6940 ha->tgt.saved_firmware_options_3;
6941 }
6942 return;
6943 }
6944
6945 if (ha->base_qpair->enable_class_2) {
6946 if (vha->flags.init_done)
6947 fc_host_supported_classes(vha->host) =
6948 FC_COS_CLASS2 | FC_COS_CLASS3;
6949
6950 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
6951 } else {
6952 if (vha->flags.init_done)
6953 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6954
6955 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
6956 }
6957 }
6958
6959 void
qlt_81xx_config_nvram_stage2(struct scsi_qla_host * vha,struct init_cb_81xx * icb)6960 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6961 struct init_cb_81xx *icb)
6962 {
6963 struct qla_hw_data *ha = vha->hw;
6964
6965 if (!QLA_TGT_MODE_ENABLED())
6966 return;
6967
6968 if (ha->tgt.node_name_set) {
6969 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
6970 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
6971 }
6972 }
6973
6974 void
qlt_modify_vp_config(struct scsi_qla_host * vha,struct vp_config_entry_24xx * vpmod)6975 qlt_modify_vp_config(struct scsi_qla_host *vha,
6976 struct vp_config_entry_24xx *vpmod)
6977 {
6978 /* enable target mode. Bit5 = 1 => disable */
6979 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
6980 vpmod->options_idx1 &= ~BIT_5;
6981
6982 /* Disable ini mode, if requested. bit4 = 1 => disable */
6983 if (qla_tgt_mode_enabled(vha))
6984 vpmod->options_idx1 &= ~BIT_4;
6985 }
6986
6987 void
qlt_probe_one_stage1(struct scsi_qla_host * base_vha,struct qla_hw_data * ha)6988 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6989 {
6990 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6991 if (!QLA_TGT_MODE_ENABLED())
6992 return;
6993
6994 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
6995 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6996 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6997 } else {
6998 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6999 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
7000 }
7001
7002 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
7003
7004 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
7005 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
7006 qlt_unknown_atio_work_fn);
7007
7008 qlt_clear_mode(base_vha);
7009
7010 qla_update_vp_map(base_vha, SET_VP_IDX);
7011 }
7012
7013 irqreturn_t
qla83xx_msix_atio_q(int irq,void * dev_id)7014 qla83xx_msix_atio_q(int irq, void *dev_id)
7015 {
7016 struct rsp_que *rsp;
7017 scsi_qla_host_t *vha;
7018 struct qla_hw_data *ha;
7019 unsigned long flags;
7020
7021 rsp = (struct rsp_que *) dev_id;
7022 ha = rsp->hw;
7023 vha = pci_get_drvdata(ha->pdev);
7024
7025 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7026
7027 qlt_24xx_process_atio_queue(vha, 0);
7028
7029 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7030
7031 return IRQ_HANDLED;
7032 }
7033
7034 static void
qlt_handle_abts_recv_work(struct work_struct * work)7035 qlt_handle_abts_recv_work(struct work_struct *work)
7036 {
7037 struct qla_tgt_sess_op *op = container_of(work,
7038 struct qla_tgt_sess_op, work);
7039 scsi_qla_host_t *vha = op->vha;
7040 struct qla_hw_data *ha = vha->hw;
7041 unsigned long flags;
7042
7043 if (qla2x00_reset_active(vha) ||
7044 (op->chip_reset != ha->base_qpair->chip_reset))
7045 return;
7046
7047 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7048 qlt_24xx_process_atio_queue(vha, 0);
7049 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7050
7051 spin_lock_irqsave(&ha->hardware_lock, flags);
7052 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
7053 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7054
7055 kfree(op);
7056 }
7057
7058 void
qlt_handle_abts_recv(struct scsi_qla_host * vha,struct rsp_que * rsp,response_t * pkt)7059 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
7060 response_t *pkt)
7061 {
7062 struct qla_tgt_sess_op *op;
7063
7064 op = kzalloc(sizeof(*op), GFP_ATOMIC);
7065
7066 if (!op) {
7067 /* do not reach for ATIO queue here. This is best effort err
7068 * recovery at this point.
7069 */
7070 qlt_response_pkt_all_vps(vha, rsp, pkt);
7071 return;
7072 }
7073
7074 memcpy(&op->atio, pkt, sizeof(*pkt));
7075 op->vha = vha;
7076 op->chip_reset = vha->hw->base_qpair->chip_reset;
7077 op->rsp = rsp;
7078 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7079 queue_work(qla_tgt_wq, &op->work);
7080 return;
7081 }
7082
7083 int
qlt_mem_alloc(struct qla_hw_data * ha)7084 qlt_mem_alloc(struct qla_hw_data *ha)
7085 {
7086 if (!QLA_TGT_MODE_ENABLED())
7087 return 0;
7088
7089 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7090 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7091 &ha->tgt.atio_dma, GFP_KERNEL);
7092 if (!ha->tgt.atio_ring) {
7093 return -ENOMEM;
7094 }
7095 return 0;
7096 }
7097
7098 void
qlt_mem_free(struct qla_hw_data * ha)7099 qlt_mem_free(struct qla_hw_data *ha)
7100 {
7101 if (!QLA_TGT_MODE_ENABLED())
7102 return;
7103
7104 if (ha->tgt.atio_ring) {
7105 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7106 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7107 ha->tgt.atio_dma);
7108 }
7109 ha->tgt.atio_ring = NULL;
7110 ha->tgt.atio_dma = 0;
7111 }
7112
qlt_parse_ini_mode(void)7113 static int __init qlt_parse_ini_mode(void)
7114 {
7115 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7116 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7117 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7118 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7119 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7120 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
7121 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7122 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
7123 else
7124 return false;
7125
7126 return true;
7127 }
7128
qlt_init(void)7129 int __init qlt_init(void)
7130 {
7131 int ret;
7132
7133 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
7134 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
7135
7136 if (!qlt_parse_ini_mode()) {
7137 ql_log(ql_log_fatal, NULL, 0xe06b,
7138 "qlt_parse_ini_mode() failed\n");
7139 return -EINVAL;
7140 }
7141
7142 if (!QLA_TGT_MODE_ENABLED())
7143 return 0;
7144
7145 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7146 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7147 qla_tgt_mgmt_cmd), 0, NULL);
7148 if (!qla_tgt_mgmt_cmd_cachep) {
7149 ql_log(ql_log_fatal, NULL, 0xd04b,
7150 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
7151 return -ENOMEM;
7152 }
7153
7154 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
7155 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7156 0, NULL);
7157
7158 if (!qla_tgt_plogi_cachep) {
7159 ql_log(ql_log_fatal, NULL, 0xe06d,
7160 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7161 ret = -ENOMEM;
7162 goto out_mgmt_cmd_cachep;
7163 }
7164
7165 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7166 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7167 if (!qla_tgt_mgmt_cmd_mempool) {
7168 ql_log(ql_log_fatal, NULL, 0xe06e,
7169 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7170 ret = -ENOMEM;
7171 goto out_plogi_cachep;
7172 }
7173
7174 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7175 if (!qla_tgt_wq) {
7176 ql_log(ql_log_fatal, NULL, 0xe06f,
7177 "alloc_workqueue for qla_tgt_wq failed\n");
7178 ret = -ENOMEM;
7179 goto out_cmd_mempool;
7180 }
7181 /*
7182 * Return 1 to signal that initiator-mode is being disabled
7183 */
7184 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7185
7186 out_cmd_mempool:
7187 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7188 out_plogi_cachep:
7189 kmem_cache_destroy(qla_tgt_plogi_cachep);
7190 out_mgmt_cmd_cachep:
7191 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7192 return ret;
7193 }
7194
qlt_exit(void)7195 void qlt_exit(void)
7196 {
7197 if (!QLA_TGT_MODE_ENABLED())
7198 return;
7199
7200 destroy_workqueue(qla_tgt_wq);
7201 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
7202 kmem_cache_destroy(qla_tgt_plogi_cachep);
7203 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
7204 }
7205