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qla2xxx: Enable Target counters in DebugFS.
[linux-2.6-block.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
d154f350
AE		 45static int ql2xtgt_tape_enable;
46module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
2d70c103
NB		 50static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51module_param(qlini_mode, charp, S_IRUGO);
52MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
58 "\"enabled\" (default) - initiator mode will always stay enabled.");
59
aa230bc5 60int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103 61
33e79977
QT		 62static int temp_sam_status = SAM_STAT_BUSY;
63
2d70c103
NB		 64/*
65 * From scsi/fc/fc_fcp.h
66 */
67enum fcp_resp_rsp_codes {
68 FCP_TMF_CMPL = 0,
69 FCP_DATA_LEN_INVALID = 1,
70 FCP_CMND_FIELDS_INVALID = 2,
71 FCP_DATA_PARAM_MISMATCH = 3,
72 FCP_TMF_REJECTED = 4,
73 FCP_TMF_FAILED = 5,
74 FCP_TMF_INVALID_LUN = 9,
75};
76
77/*
78 * fc_pri_ta from scsi/fc/fc_fcp.h
79 */
80#define FCP_PTA_SIMPLE 0 /* simple task attribute */
81#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
82#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 83#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 84#define FCP_PTA_MASK 7 /* mask for task attribute field */
85#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
86#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
87
88/*
89 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
90 * must be called under HW lock and could unlock/lock it inside.
91 * It isn't an issue, since in the current implementation on the time when
92 * those functions are called:
93 *
94 * - Either context is IRQ and only IRQ handler can modify HW data,
95 * including rings related fields,
96 *
97 * - Or access to target mode variables from struct qla_tgt doesn't
98 * cross those functions boundaries, except tgt_stop, which
99 * additionally protected by irq_cmd_count.
100 */
101/* Predefs for callbacks handed to qla2xxx LLD */
102static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
103 struct atio_from_isp *pkt);
104static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
105static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
106 int fn, void *iocb, int flags);
107static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
108 *cmd, struct atio_from_isp *atio, int ha_locked);
109static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
110 struct qla_tgt_srr_imm *imm, int ha_lock);
b6a029e1
AE		 111static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
112 struct qla_tgt_cmd *cmd);
33e79977
QT		 113static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
114 struct atio_from_isp *atio, uint16_t status, int qfull);
55a9066f 115static void qlt_disable_vha(struct scsi_qla_host *vha);
b2032fd5 116static void qlt_clear_tgt_db(struct qla_tgt *tgt);
a6ca8878
AP		 117static void qlt_send_notify_ack(struct scsi_qla_host *vha,
118 struct imm_ntfy_from_isp *ntfy,
119 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
120 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
2d70c103
NB		 121/*
122 * Global Variables
123 */
2d70c103
NB		 124static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
125static mempool_t *qla_tgt_mgmt_cmd_mempool;
126static struct workqueue_struct *qla_tgt_wq;
127static DEFINE_MUTEX(qla_tgt_mutex);
128static LIST_HEAD(qla_tgt_glist);
129
df673274
AP		 130/* This API intentionally takes dest as a parameter, rather than returning
131 * int value to avoid caller forgetting to issue wmb() after the store */
132void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
133{
134 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
135 *dest = atomic_inc_return(&base_vha->generation_tick);
136 /* memory barrier */
137 wmb();
138}
139
2d70c103
NB		 140/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
141static struct qla_tgt_sess *qlt_find_sess_by_port_name(
142 struct qla_tgt *tgt,
143 const uint8_t *port_name)
144{
145 struct qla_tgt_sess *sess;
146
147 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
148 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
149 return sess;
150 }
151
152 return NULL;
153}
154
155/* Might release hw lock, then reaquire!! */
156static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
157{
158 /* Send marker if required */
159 if (unlikely(vha->marker_needed != 0)) {
160 int rc = qla2x00_issue_marker(vha, vha_locked);
161 if (rc != QLA_SUCCESS) {
162 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
163 "qla_target(%d): issue_marker() failed\n",
164 vha->vp_idx);
165 }
166 return rc;
167 }
168 return QLA_SUCCESS;
169}
170
171static inline
172struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
173 uint8_t *d_id)
174{
175 struct qla_hw_data *ha = vha->hw;
176 uint8_t vp_idx;
177
178 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
179 return NULL;
180
181 if (vha->d_id.b.al_pa == d_id[2])
182 return vha;
183
184 BUG_ON(ha->tgt.tgt_vp_map == NULL);
185 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
186 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
187 return ha->tgt.tgt_vp_map[vp_idx].vha;
188
189 return NULL;
190}
191
192static inline
193struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
194 uint16_t vp_idx)
195{
196 struct qla_hw_data *ha = vha->hw;
197
198 if (vha->vp_idx == vp_idx)
199 return vha;
200
201 BUG_ON(ha->tgt.tgt_vp_map == NULL);
202 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
203 return ha->tgt.tgt_vp_map[vp_idx].vha;
204
205 return NULL;
206}
207
33e79977
QT		 208static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
209{
210 unsigned long flags;
211
212 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
213
214 vha->hw->tgt.num_pend_cmds++;
215 if (vha->hw->tgt.num_pend_cmds > vha->hw->qla_stats.stat_max_pend_cmds)
216 vha->hw->qla_stats.stat_max_pend_cmds =
217 vha->hw->tgt.num_pend_cmds;
218 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
219}
220static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
221{
222 unsigned long flags;
223
224 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
225 vha->hw->tgt.num_pend_cmds--;
226 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
227}
228
55a9066f 229static void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2d70c103
NB		 230 struct atio_from_isp *atio)
231{
f83adb61
QT		 232 ql_dbg(ql_dbg_tgt, vha, 0xe072,
233 "%s: qla_target(%d): type %x ox_id %04x\n",
234 __func__, vha->vp_idx, atio->u.raw.entry_type,
235 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
236
2d70c103
NB		 237 switch (atio->u.raw.entry_type) {
238 case ATIO_TYPE7:
239 {
240 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
241 atio->u.isp24.fcp_hdr.d_id);
242 if (unlikely(NULL == host)) {
243 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
244 "qla_target(%d): Received ATIO_TYPE7 "
245 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
246 atio->u.isp24.fcp_hdr.d_id[0],
247 atio->u.isp24.fcp_hdr.d_id[1],
248 atio->u.isp24.fcp_hdr.d_id[2]);
249 break;
250 }
251 qlt_24xx_atio_pkt(host, atio);
252 break;
253 }
254
255 case IMMED_NOTIFY_TYPE:
256 {
257 struct scsi_qla_host *host = vha;
258 struct imm_ntfy_from_isp *entry =
259 (struct imm_ntfy_from_isp *)atio;
260
261 if ((entry->u.isp24.vp_index != 0xFF) &&
262 (entry->u.isp24.nport_handle != 0xFFFF)) {
263 host = qlt_find_host_by_vp_idx(vha,
264 entry->u.isp24.vp_index);
265 if (unlikely(!host)) {
266 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
267 "qla_target(%d): Received "
268 "ATIO (IMMED_NOTIFY_TYPE) "
269 "with unknown vp_index %d\n",
270 vha->vp_idx, entry->u.isp24.vp_index);
271 break;
272 }
273 }
274 qlt_24xx_atio_pkt(host, atio);
275 break;
276 }
277
278 default:
279 ql_dbg(ql_dbg_tgt, vha, 0xe040,
280 "qla_target(%d): Received unknown ATIO atio "
281 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
282 break;
283 }
284
285 return;
286}
287
288void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
289{
290 switch (pkt->entry_type) {
f83adb61
QT		 291 case CTIO_CRC2:
292 ql_dbg(ql_dbg_tgt, vha, 0xe073,
293 "qla_target(%d):%s: CRC2 Response pkt\n",
294 vha->vp_idx, __func__);
2d70c103
NB		 295 case CTIO_TYPE7:
296 {
297 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
298 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
299 entry->vp_index);
300 if (unlikely(!host)) {
301 ql_dbg(ql_dbg_tgt, vha, 0xe041,
302 "qla_target(%d): Response pkt (CTIO_TYPE7) "
303 "received, with unknown vp_index %d\n",
304 vha->vp_idx, entry->vp_index);
305 break;
306 }
307 qlt_response_pkt(host, pkt);
308 break;
309 }
310
311 case IMMED_NOTIFY_TYPE:
312 {
313 struct scsi_qla_host *host = vha;
314 struct imm_ntfy_from_isp *entry =
315 (struct imm_ntfy_from_isp *)pkt;
316
317 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
318 if (unlikely(!host)) {
319 ql_dbg(ql_dbg_tgt, vha, 0xe042,
320 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
321 "received, with unknown vp_index %d\n",
322 vha->vp_idx, entry->u.isp24.vp_index);
323 break;
324 }
325 qlt_response_pkt(host, pkt);
326 break;
327 }
328
329 case NOTIFY_ACK_TYPE:
330 {
331 struct scsi_qla_host *host = vha;
332 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
333
334 if (0xFF != entry->u.isp24.vp_index) {
335 host = qlt_find_host_by_vp_idx(vha,
336 entry->u.isp24.vp_index);
337 if (unlikely(!host)) {
338 ql_dbg(ql_dbg_tgt, vha, 0xe043,
339 "qla_target(%d): Response "
340 "pkt (NOTIFY_ACK_TYPE) "
341 "received, with unknown "
342 "vp_index %d\n", vha->vp_idx,
343 entry->u.isp24.vp_index);
344 break;
345 }
346 }
347 qlt_response_pkt(host, pkt);
348 break;
349 }
350
351 case ABTS_RECV_24XX:
352 {
353 struct abts_recv_from_24xx *entry =
354 (struct abts_recv_from_24xx *)pkt;
355 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
356 entry->vp_index);
357 if (unlikely(!host)) {
358 ql_dbg(ql_dbg_tgt, vha, 0xe044,
359 "qla_target(%d): Response pkt "
360 "(ABTS_RECV_24XX) received, with unknown "
361 "vp_index %d\n", vha->vp_idx, entry->vp_index);
362 break;
363 }
364 qlt_response_pkt(host, pkt);
365 break;
366 }
367
368 case ABTS_RESP_24XX:
369 {
370 struct abts_resp_to_24xx *entry =
371 (struct abts_resp_to_24xx *)pkt;
372 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
373 entry->vp_index);
374 if (unlikely(!host)) {
375 ql_dbg(ql_dbg_tgt, vha, 0xe045,
376 "qla_target(%d): Response pkt "
377 "(ABTS_RECV_24XX) received, with unknown "
378 "vp_index %d\n", vha->vp_idx, entry->vp_index);
379 break;
380 }
381 qlt_response_pkt(host, pkt);
382 break;
383 }
384
385 default:
386 qlt_response_pkt(vha, pkt);
387 break;
388 }
389
390}
391
392static void qlt_free_session_done(struct work_struct *work)
393{
394 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
395 free_work);
396 struct qla_tgt *tgt = sess->tgt;
397 struct scsi_qla_host *vha = sess->vha;
398 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 399 unsigned long flags;
400 bool logout_started = false;
401 fc_port_t fcport;
402
403 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
404 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
405 " s_id %02x:%02x:%02x logout %d keep %d plogi %d\n",
406 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
407 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
408 sess->logout_on_delete, sess->keep_nport_handle,
409 sess->plogi_ack_needed);
2d70c103
NB		 410
411 BUG_ON(!tgt);
a6ca8878
AP		 412
413 if (sess->logout_on_delete) {
414 int rc;
415
416 memset(&fcport, 0, sizeof(fcport));
417 fcport.loop_id = sess->loop_id;
418 fcport.d_id = sess->s_id;
419 memcpy(fcport.port_name, sess->port_name, WWN_SIZE);
420 fcport.vha = vha;
421 fcport.tgt_session = sess;
422
423 rc = qla2x00_post_async_logout_work(vha, &fcport, NULL);
424 if (rc != QLA_SUCCESS)
425 ql_log(ql_log_warn, vha, 0xf085,
426 "Schedule logo failed sess %p rc %d\n",
427 sess, rc);
428 else
429 logout_started = true;
430 }
431
2d70c103
NB		 432 /*
433 * Release the target session for FC Nexus from fabric module code.
434 */
435 if (sess->se_sess != NULL)
436 ha->tgt.tgt_ops->free_session(sess);
437
a6ca8878
AP		 438 if (logout_started) {
439 bool traced = false;
440
441 while (!ACCESS_ONCE(sess->logout_completed)) {
442 if (!traced) {
443 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
444 "%s: waiting for sess %p logout\n",
445 __func__, sess);
446 traced = true;
447 }
448 msleep(100);
449 }
450
451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf087,
452 "%s: sess %p logout completed\n",
453 __func__, sess);
454 }
455
456 spin_lock_irqsave(&ha->hardware_lock, flags);
457
458 if (sess->plogi_ack_needed)
459 qlt_send_notify_ack(vha, &sess->tm_iocb,
460 0, 0, 0, 0, 0, 0);
461
462 list_del(&sess->sess_list_entry);
463
464 spin_unlock_irqrestore(&ha->hardware_lock, flags);
465
2d70c103
NB		 466 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
467 "Unregistration of sess %p finished\n", sess);
468
469 kfree(sess);
470 /*
471 * We need to protect against race, when tgt is freed before or
472 * inside wake_up()
473 */
474 tgt->sess_count--;
475 if (tgt->sess_count == 0)
476 wake_up_all(&tgt->waitQ);
477}
478
479/* ha->hardware_lock supposed to be held on entry */
480void qlt_unreg_sess(struct qla_tgt_sess *sess)
481{
482 struct scsi_qla_host *vha = sess->vha;
483
484 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
485
a6ca8878
AP		 486 if (!list_empty(&sess->del_list_entry))
487 list_del_init(&sess->del_list_entry);
488 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
2d70c103
NB		 489
490 INIT_WORK(&sess->free_work, qlt_free_session_done);
491 schedule_work(&sess->free_work);
492}
493EXPORT_SYMBOL(qlt_unreg_sess);
494
495/* ha->hardware_lock supposed to be held on entry */
496static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
497{
498 struct qla_hw_data *ha = vha->hw;
499 struct qla_tgt_sess *sess = NULL;
500 uint32_t unpacked_lun, lun = 0;
501 uint16_t loop_id;
502 int res = 0;
503 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
504 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
505
506 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
507 if (loop_id == 0xFFFF) {
2d70c103 508 /* Global event */
b2032fd5
RD		 509 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
510 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
511#if 0 /* FIXME: do we need to choose a session here? */
2d70c103
NB		 512 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
513 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
514 typeof(*sess), sess_list_entry);
515 switch (mcmd) {
516 case QLA_TGT_NEXUS_LOSS_SESS:
517 mcmd = QLA_TGT_NEXUS_LOSS;
518 break;
519 case QLA_TGT_ABORT_ALL_SESS:
520 mcmd = QLA_TGT_ABORT_ALL;
521 break;
522 case QLA_TGT_NEXUS_LOSS:
523 case QLA_TGT_ABORT_ALL:
524 break;
525 default:
526 ql_dbg(ql_dbg_tgt, vha, 0xe046,
527 "qla_target(%d): Not allowed "
528 "command %x in %s", vha->vp_idx,
529 mcmd, __func__);
530 sess = NULL;
531 break;
532 }
533 } else
534 sess = NULL;
535#endif
536 } else {
537 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
538 }
539
540 ql_dbg(ql_dbg_tgt, vha, 0xe000,
541 "Using sess for qla_tgt_reset: %p\n", sess);
542 if (!sess) {
543 res = -ESRCH;
544 return res;
545 }
546
547 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 548 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
549 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 550 mcmd, loop_id);
551
552 lun = a->u.isp24.fcp_cmnd.lun;
553 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
554
555 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
556 iocb, QLA24XX_MGMT_SEND_NACK);
557}
558
559/* ha->hardware_lock supposed to be held on entry */
560static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
561 bool immediate)
562{
563 struct qla_tgt *tgt = sess->tgt;
564 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
565
a6ca8878
AP		 566 if (sess->deleted) {
567 /* Upgrade to unconditional deletion in case it was temporary */
568 if (immediate && sess->deleted == QLA_SESS_DELETION_PENDING)
569 list_del(&sess->del_list_entry);
570 else
571 return;
572 }
2d70c103
NB		 573
574 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
575 "Scheduling sess %p for deletion\n", sess);
2d70c103 576
a6ca8878 577 if (immediate) {
2d70c103 578 dev_loss_tmo = 0;
a6ca8878
AP		 579 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
580 list_add(&sess->del_list_entry, &tgt->del_sess_list);
581 } else {
582 sess->deleted = QLA_SESS_DELETION_PENDING;
583 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
584 }
2d70c103
NB		 585
586 sess->expires = jiffies + dev_loss_tmo * HZ;
587
588 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
df673274
AP		 589 "qla_target(%d): session for port %8phC (loop ID %d s_id %02x:%02x:%02x)"
590 " scheduled for deletion in %u secs (expires: %lu) immed: %d, logout: %d, gen: %#x\n",
591 sess->vha->vp_idx, sess->port_name, sess->loop_id,
592 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
593 dev_loss_tmo, sess->expires, immediate, sess->logout_on_delete,
594 sess->generation);
2d70c103
NB		 595
596 if (immediate)
a6ca8878 597 mod_delayed_work(system_wq, &tgt->sess_del_work, 0);
2d70c103
NB		 598 else
599 schedule_delayed_work(&tgt->sess_del_work,
63832aab 600 sess->expires - jiffies);
2d70c103
NB		 601}
602
603/* ha->hardware_lock supposed to be held on entry */
c5701042 604static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103
NB		 605{
606 struct qla_tgt_sess *sess;
607
608 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
609 qlt_schedule_sess_for_deletion(sess, true);
610
611 /* At this point tgt could be already dead */
612}
613
614static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
615 uint16_t *loop_id)
616{
617 struct qla_hw_data *ha = vha->hw;
618 dma_addr_t gid_list_dma;
619 struct gid_list_info *gid_list;
620 char *id_iter;
621 int res, rc, i;
622 uint16_t entries;
623
624 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
625 &gid_list_dma, GFP_KERNEL);
626 if (!gid_list) {
627 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
628 "qla_target(%d): DMA Alloc failed of %u\n",
629 vha->vp_idx, qla2x00_gid_list_size(ha));
630 return -ENOMEM;
631 }
632
633 /* Get list of logged in devices */
634 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
635 if (rc != QLA_SUCCESS) {
636 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
637 "qla_target(%d): get_id_list() failed: %x\n",
638 vha->vp_idx, rc);
639 res = -1;
640 goto out_free_id_list;
641 }
642
643 id_iter = (char *)gid_list;
644 res = -1;
645 for (i = 0; i < entries; i++) {
646 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
647 if ((gid->al_pa == s_id[2]) &&
648 (gid->area == s_id[1]) &&
649 (gid->domain == s_id[0])) {
650 *loop_id = le16_to_cpu(gid->loop_id);
651 res = 0;
652 break;
653 }
654 id_iter += ha->gid_list_info_size;
655 }
656
657out_free_id_list:
658 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
659 gid_list, gid_list_dma);
660 return res;
661}
662
2d70c103
NB		 663/* ha->hardware_lock supposed to be held on entry */
664static void qlt_undelete_sess(struct qla_tgt_sess *sess)
665{
a6ca8878 666 BUG_ON(sess->deleted != QLA_SESS_DELETION_PENDING);
2d70c103 667
a6ca8878 668 list_del_init(&sess->del_list_entry);
2d70c103
NB		 669 sess->deleted = 0;
670}
671
672static void qlt_del_sess_work_fn(struct delayed_work *work)
673{
674 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
675 sess_del_work);
676 struct scsi_qla_host *vha = tgt->vha;
677 struct qla_hw_data *ha = vha->hw;
678 struct qla_tgt_sess *sess;
63832aab 679 unsigned long flags, elapsed;
2d70c103
NB		 680
681 spin_lock_irqsave(&ha->hardware_lock, flags);
682 while (!list_empty(&tgt->del_sess_list)) {
683 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
684 del_list_entry);
63832aab
SU		 685 elapsed = jiffies;
686 if (time_after_eq(elapsed, sess->expires)) {
a6ca8878
AP		 687 /* No turning back */
688 list_del_init(&sess->del_list_entry);
689 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
2d70c103 690
08234e3a
JE		 691 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
692 "Timeout: sess %p about to be deleted\n",
693 sess);
694 ha->tgt.tgt_ops->shutdown_sess(sess);
695 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 696 } else {
697 schedule_delayed_work(&tgt->sess_del_work,
63832aab 698 sess->expires - elapsed);
2d70c103
NB		 699 break;
700 }
701 }
702 spin_unlock_irqrestore(&ha->hardware_lock, flags);
703}
704
705/*
706 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
707 * Caller must put it.
708 */
709static struct qla_tgt_sess *qlt_create_sess(
710 struct scsi_qla_host *vha,
711 fc_port_t *fcport,
712 bool local)
713{
714 struct qla_hw_data *ha = vha->hw;
715 struct qla_tgt_sess *sess;
716 unsigned long flags;
717 unsigned char be_sid[3];
718
719 /* Check to avoid double sessions */
720 spin_lock_irqsave(&ha->hardware_lock, flags);
0e8cd71c 721 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
2d70c103
NB		 722 sess_list_entry) {
723 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
724 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
725 "Double sess %p found (s_id %x:%x:%x, "
726 "loop_id %d), updating to d_id %x:%x:%x, "
727 "loop_id %d", sess, sess->s_id.b.domain,
728 sess->s_id.b.al_pa, sess->s_id.b.area,
729 sess->loop_id, fcport->d_id.b.domain,
730 fcport->d_id.b.al_pa, fcport->d_id.b.area,
731 fcport->loop_id);
732
a6ca8878
AP		 733 /* Cannot undelete at this point */
734 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
735 spin_unlock_irqrestore(&ha->hardware_lock,
736 flags);
737 return NULL;
738 }
739
2d70c103
NB		 740 if (sess->deleted)
741 qlt_undelete_sess(sess);
742
743 kref_get(&sess->se_sess->sess_kref);
c8292d1d
RD		 744 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
745 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
746
2d70c103
NB		 747 if (sess->local && !local)
748 sess->local = 0;
df673274
AP		 749
750 qlt_do_generation_tick(vha, &sess->generation);
751
2d70c103
NB		 752 spin_unlock_irqrestore(&ha->hardware_lock, flags);
753
754 return sess;
755 }
756 }
757 spin_unlock_irqrestore(&ha->hardware_lock, flags);
758
759 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
760 if (!sess) {
761 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
7b833558
OK		 762 "qla_target(%u): session allocation failed, all commands "
763 "from port %8phC will be refused", vha->vp_idx,
764 fcport->port_name);
2d70c103
NB		 765
766 return NULL;
767 }
0e8cd71c 768 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 769 sess->vha = vha;
770 sess->s_id = fcport->d_id;
771 sess->loop_id = fcport->loop_id;
772 sess->local = local;
a6ca8878
AP		 773 INIT_LIST_HEAD(&sess->del_list_entry);
774
775 /* Under normal circumstances we want to logout from firmware when
776 * session eventually ends and release corresponding nport handle.
777 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
778 * code will adjust these flags as necessary. */
779 sess->logout_on_delete = 1;
780 sess->keep_nport_handle = 0;
2d70c103
NB		 781
782 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
783 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
0e8cd71c 784 sess, vha->vha_tgt.qla_tgt);
2d70c103
NB		 785
786 be_sid[0] = sess->s_id.b.domain;
787 be_sid[1] = sess->s_id.b.area;
788 be_sid[2] = sess->s_id.b.al_pa;
789 /*
790 * Determine if this fc_port->port_name is allowed to access
791 * target mode using explict NodeACLs+MappedLUNs, or using
792 * TPG demo mode. If this is successful a target mode FC nexus
793 * is created.
794 */
795 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
796 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
797 kfree(sess);
798 return NULL;
799 }
800 /*
801 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
802 * access across ->hardware_lock reaquire.
803 */
804 kref_get(&sess->se_sess->sess_kref);
805
c8292d1d 806 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
2d70c103
NB		 807 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
808 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
809
810 spin_lock_irqsave(&ha->hardware_lock, flags);
0e8cd71c
SK		 811 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
812 vha->vha_tgt.qla_tgt->sess_count++;
df673274 813 qlt_do_generation_tick(vha, &sess->generation);
2d70c103
NB		 814 spin_unlock_irqrestore(&ha->hardware_lock, flags);
815
816 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 817 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
818 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
819 vha->vp_idx, local ? "local " : "", fcport->port_name,
820 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
821 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 822
823 return sess;
824}
825
826/*
df673274 827 * Called from qla2x00_reg_remote_port()
2d70c103
NB		 828 */
829void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
830{
831 struct qla_hw_data *ha = vha->hw;
0e8cd71c 832 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 833 struct qla_tgt_sess *sess;
834 unsigned long flags;
835
836 if (!vha->hw->tgt.tgt_ops)
837 return;
838
839 if (!tgt || (fcport->port_type != FCT_INITIATOR))
840 return;
841
0e8cd71c
SK		 842 if (qla_ini_mode_enabled(vha))
843 return;
844
2d70c103
NB		 845 spin_lock_irqsave(&ha->hardware_lock, flags);
846 if (tgt->tgt_stop) {
847 spin_unlock_irqrestore(&ha->hardware_lock, flags);
848 return;
849 }
850 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
851 if (!sess) {
852 spin_unlock_irqrestore(&ha->hardware_lock, flags);
853
0e8cd71c 854 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 855 sess = qlt_create_sess(vha, fcport, false);
0e8cd71c 856 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 857
858 spin_lock_irqsave(&ha->hardware_lock, flags);
a6ca8878
AP		 859 } else if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
860 /* Point of no return */
861 spin_unlock_irqrestore(&ha->hardware_lock, flags);
862 return;
2d70c103
NB		 863 } else {
864 kref_get(&sess->se_sess->sess_kref);
865
866 if (sess->deleted) {
867 qlt_undelete_sess(sess);
868
869 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
7b833558
OK		 870 "qla_target(%u): %ssession for port %8phC "
871 "(loop ID %d) reappeared\n", vha->vp_idx,
872 sess->local ? "local " : "", sess->port_name,
2d70c103
NB		 873 sess->loop_id);
874
875 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
876 "Reappeared sess %p\n", sess);
877 }
c8292d1d
RD		 878 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
879 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
2d70c103
NB		 880 }
881
882 if (sess && sess->local) {
883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
884 "qla_target(%u): local session for "
7b833558
OK		 885 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
886 fcport->port_name, sess->loop_id);
2d70c103
NB		 887 sess->local = 0;
888 }
2d70c103 889 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 890 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 891}
892
df673274
AP		 893/*
894 * max_gen - specifies maximum session generation
895 * at which this deletion requestion is still valid
896 */
897void
898qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 899{
0e8cd71c 900 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 901 struct qla_tgt_sess *sess;
2d70c103
NB		 902
903 if (!vha->hw->tgt.tgt_ops)
904 return;
905
b2032fd5 906 if (!tgt)
2d70c103
NB		 907 return;
908
2d70c103 909 if (tgt->tgt_stop) {
2d70c103
NB		 910 return;
911 }
912 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
913 if (!sess) {
2d70c103
NB		 914 return;
915 }
916
df673274
AP		 917 if (max_gen - sess->generation < 0) {
918 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
919 "Ignoring stale deletion request for se_sess %p / sess %p"
920 " for port %8phC, req_gen %d, sess_gen %d\n",
921 sess->se_sess, sess, sess->port_name, max_gen,
922 sess->generation);
923 return;
924 }
925
2d70c103
NB		 926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
927
928 sess->local = 1;
929 qlt_schedule_sess_for_deletion(sess, false);
2d70c103
NB		 930}
931
932static inline int test_tgt_sess_count(struct qla_tgt *tgt)
933{
934 struct qla_hw_data *ha = tgt->ha;
935 unsigned long flags;
936 int res;
937 /*
938 * We need to protect against race, when tgt is freed before or
939 * inside wake_up()
940 */
941 spin_lock_irqsave(&ha->hardware_lock, flags);
942 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
943 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
944 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
945 res = (tgt->sess_count == 0);
946 spin_unlock_irqrestore(&ha->hardware_lock, flags);
947
948 return res;
949}
950
951/* Called by tcm_qla2xxx configfs code */
3c231bda 952int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 953{
954 struct scsi_qla_host *vha = tgt->vha;
955 struct qla_hw_data *ha = tgt->ha;
956 unsigned long flags;
957
3c231bda
NB		 958 mutex_lock(&qla_tgt_mutex);
959 if (!vha->fc_vport) {
960 struct Scsi_Host *sh = vha->host;
961 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
962 bool npiv_vports;
963
964 spin_lock_irqsave(sh->host_lock, flags);
965 npiv_vports = (fc_host->npiv_vports_inuse);
966 spin_unlock_irqrestore(sh->host_lock, flags);
967
968 if (npiv_vports) {
969 mutex_unlock(&qla_tgt_mutex);
970 return -EPERM;
971 }
972 }
2d70c103
NB		 973 if (tgt->tgt_stop || tgt->tgt_stopped) {
974 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
975 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 976 mutex_unlock(&qla_tgt_mutex);
977 return -EPERM;
2d70c103
NB		 978 }
979
980 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
981 vha->host_no, vha);
982 /*
983 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
984 * Lock is needed, because we still can get an incoming packet.
985 */
0e8cd71c 986 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 987 spin_lock_irqsave(&ha->hardware_lock, flags);
988 tgt->tgt_stop = 1;
c5701042 989 qlt_clear_tgt_db(tgt);
2d70c103 990 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 991 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 992 mutex_unlock(&qla_tgt_mutex);
2d70c103 993
43829731 994 flush_delayed_work(&tgt->sess_del_work);
2d70c103
NB		 995
996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
997 "Waiting for sess works (tgt %p)", tgt);
998 spin_lock_irqsave(&tgt->sess_work_lock, flags);
999 while (!list_empty(&tgt->sess_works_list)) {
1000 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1001 flush_scheduled_work();
1002 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1003 }
1004 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1005
1006 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1007 "Waiting for tgt %p: list_empty(sess_list)=%d "
1008 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
1009 tgt->sess_count);
1010
1011 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1012
1013 /* Big hammer */
1014 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
1015 qlt_disable_vha(vha);
1016
1017 /* Wait for sessions to clear out (just in case) */
1018 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 1019 return 0;
2d70c103
NB		 1020}
1021EXPORT_SYMBOL(qlt_stop_phase1);
1022
1023/* Called by tcm_qla2xxx configfs code */
1024void qlt_stop_phase2(struct qla_tgt *tgt)
1025{
1026 struct qla_hw_data *ha = tgt->ha;
0e8cd71c 1027 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 1028 unsigned long flags;
1029
1030 if (tgt->tgt_stopped) {
0e8cd71c 1031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1032 "Already in tgt->tgt_stopped state\n");
1033 dump_stack();
1034 return;
1035 }
1036
0e8cd71c 1037 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
2d70c103
NB		 1038 "Waiting for %d IRQ commands to complete (tgt %p)",
1039 tgt->irq_cmd_count, tgt);
1040
0e8cd71c 1041 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1042 spin_lock_irqsave(&ha->hardware_lock, flags);
1043 while (tgt->irq_cmd_count != 0) {
1044 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1045 udelay(2);
1046 spin_lock_irqsave(&ha->hardware_lock, flags);
1047 }
1048 tgt->tgt_stop = 0;
1049 tgt->tgt_stopped = 1;
1050 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 1051 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1052
0e8cd71c 1053 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
2d70c103
NB		 1054 tgt);
1055}
1056EXPORT_SYMBOL(qlt_stop_phase2);
1057
1058/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1059static void qlt_release(struct qla_tgt *tgt)
2d70c103 1060{
0e8cd71c 1061 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1062
0e8cd71c 1063 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1064 qlt_stop_phase2(tgt);
1065
0e8cd71c 1066 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1067
0e8cd71c 1068 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1069 "Release of tgt %p finished\n", tgt);
1070
1071 kfree(tgt);
1072}
1073
1074/* ha->hardware_lock supposed to be held on entry */
1075static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1076 const void *param, unsigned int param_size)
1077{
1078 struct qla_tgt_sess_work_param *prm;
1079 unsigned long flags;
1080
1081 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1082 if (!prm) {
1083 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1084 "qla_target(%d): Unable to create session "
1085 "work, command will be refused", 0);
1086 return -ENOMEM;
1087 }
1088
1089 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1090 "Scheduling work (type %d, prm %p)"
1091 " to find session for param %p (size %d, tgt %p)\n",
1092 type, prm, param, param_size, tgt);
1093
1094 prm->type = type;
1095 memcpy(&prm->tm_iocb, param, param_size);
1096
1097 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1098 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1099 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1100
1101 schedule_work(&tgt->sess_work);
1102
1103 return 0;
1104}
1105
1106/*
1107 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1108 */
1109static void qlt_send_notify_ack(struct scsi_qla_host *vha,
1110 struct imm_ntfy_from_isp *ntfy,
1111 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1112 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1113{
1114 struct qla_hw_data *ha = vha->hw;
1115 request_t *pkt;
1116 struct nack_to_isp *nack;
1117
1118 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1119
1120 /* Send marker if required */
1121 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1122 return;
1123
1124 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1125 if (!pkt) {
1126 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1127 "qla_target(%d): %s failed: unable to allocate "
1128 "request packet\n", vha->vp_idx, __func__);
1129 return;
1130 }
1131
0e8cd71c
SK		 1132 if (vha->vha_tgt.qla_tgt != NULL)
1133 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1134
1135 pkt->entry_type = NOTIFY_ACK_TYPE;
1136 pkt->entry_count = 1;
1137
1138 nack = (struct nack_to_isp *)pkt;
1139 nack->ox_id = ntfy->ox_id;
1140
1141 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1142 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1143 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1144 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1145 }
1146 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1147 nack->u.isp24.status = ntfy->u.isp24.status;
1148 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1149 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1150 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1151 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1152 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1153 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1154 nack->u.isp24.srr_reject_code = srr_reject_code;
1155 nack->u.isp24.srr_reject_code_expl = srr_explan;
1156 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1157
1158 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1159 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1160 vha->vp_idx, nack->u.isp24.status);
1161
63163e06
HM		 1162 /* Memory Barrier */
1163 wmb();
2d70c103
NB		 1164 qla2x00_start_iocbs(vha, vha->req);
1165}
1166
1167/*
1168 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1169 */
1170static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1171 struct abts_recv_from_24xx *abts, uint32_t status,
1172 bool ids_reversed)
1173{
1174 struct qla_hw_data *ha = vha->hw;
1175 struct abts_resp_to_24xx *resp;
1176 uint32_t f_ctl;
1177 uint8_t *p;
1178
1179 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1180 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1181 ha, abts, status);
1182
1183 /* Send marker if required */
1184 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1185 return;
1186
b6a029e1 1187 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1188 if (!resp) {
1189 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1190 "qla_target(%d): %s failed: unable to allocate "
1191 "request packet", vha->vp_idx, __func__);
1192 return;
1193 }
1194
1195 resp->entry_type = ABTS_RESP_24XX;
1196 resp->entry_count = 1;
1197 resp->nport_handle = abts->nport_handle;
1198 resp->vp_index = vha->vp_idx;
1199 resp->sof_type = abts->sof_type;
1200 resp->exchange_address = abts->exchange_address;
1201 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1202 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1203 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1204 F_CTL_SEQ_INITIATIVE);
1205 p = (uint8_t *)&f_ctl;
1206 resp->fcp_hdr_le.f_ctl[0] = *p++;
1207 resp->fcp_hdr_le.f_ctl[1] = *p++;
1208 resp->fcp_hdr_le.f_ctl[2] = *p;
1209 if (ids_reversed) {
1210 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1211 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1212 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1213 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1214 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1215 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1216 } else {
1217 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1218 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1219 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1220 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1221 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1222 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1223 }
1224 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1225 if (status == FCP_TMF_CMPL) {
1226 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1227 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1228 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1229 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1230 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1231 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1232 } else {
1233 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1234 resp->payload.ba_rjt.reason_code =
1235 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1236 /* Other bytes are zero */
1237 }
1238
0e8cd71c 1239 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1240
63163e06
HM		 1241 /* Memory Barrier */
1242 wmb();
2d70c103
NB		 1243 qla2x00_start_iocbs(vha, vha->req);
1244}
1245
1246/*
1247 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1248 */
1249static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1250 struct abts_resp_from_24xx_fw *entry)
1251{
1252 struct ctio7_to_24xx *ctio;
1253
1254 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1255 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1256 /* Send marker if required */
1257 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1258 return;
1259
b6a029e1 1260 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1261 if (ctio == NULL) {
1262 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1263 "qla_target(%d): %s failed: unable to allocate "
1264 "request packet\n", vha->vp_idx, __func__);
1265 return;
1266 }
1267
1268 /*
1269 * We've got on entrance firmware's response on by us generated
1270 * ABTS response. So, in it ID fields are reversed.
1271 */
1272
1273 ctio->entry_type = CTIO_TYPE7;
1274 ctio->entry_count = 1;
1275 ctio->nport_handle = entry->nport_handle;
1276 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1277 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1278 ctio->vp_index = vha->vp_idx;
1279 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1280 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1281 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1282 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1283 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1284 CTIO7_FLAGS_TERMINATE);
33a5fcee 1285 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1286
63163e06
HM		 1287 /* Memory Barrier */
1288 wmb();
2d70c103
NB		 1289 qla2x00_start_iocbs(vha, vha->req);
1290
1291 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1292 FCP_TMF_CMPL, true);
1293}
1294
8b2f5ff3
SN		 1295static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1296{
1297 struct qla_tgt_sess_op *op;
1298 struct qla_tgt_cmd *cmd;
1299
1300 spin_lock(&vha->cmd_list_lock);
1301
1302 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1303 if (tag == op->atio.u.isp24.exchange_addr) {
1304 op->aborted = true;
1305 spin_unlock(&vha->cmd_list_lock);
1306 return 1;
1307 }
1308 }
1309
1310 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1311 if (tag == cmd->atio.u.isp24.exchange_addr) {
1312 cmd->state = QLA_TGT_STATE_ABORTED;
1313 spin_unlock(&vha->cmd_list_lock);
1314 return 1;
1315 }
1316 }
1317
1318 spin_unlock(&vha->cmd_list_lock);
1319 return 0;
1320}
1321
1322/* drop cmds for the given lun
1323 * XXX only looks for cmds on the port through which lun reset was recieved
1324 * XXX does not go through the list of other port (which may have cmds
1325 * for the same lun)
1326 */
1327static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1328 uint32_t lun, uint8_t *s_id)
1329{
1330 struct qla_tgt_sess_op *op;
1331 struct qla_tgt_cmd *cmd;
1332 uint32_t key;
1333
1334 key = sid_to_key(s_id);
1335 spin_lock(&vha->cmd_list_lock);
1336 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1337 uint32_t op_key;
1338 uint32_t op_lun;
1339
1340 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1341 op_lun = scsilun_to_int(
1342 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1343 if (op_key == key && op_lun == lun)
1344 op->aborted = true;
1345 }
1346 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1347 uint32_t cmd_key;
1348 uint32_t cmd_lun;
1349
1350 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1351 cmd_lun = scsilun_to_int(
1352 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1353 if (cmd_key == key && cmd_lun == lun)
1354 cmd->state = QLA_TGT_STATE_ABORTED;
1355 }
1356 spin_unlock(&vha->cmd_list_lock);
1357}
1358
2d70c103
NB		 1359/* ha->hardware_lock supposed to be held on entry */
1360static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1361 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1362{
1363 struct qla_hw_data *ha = vha->hw;
06e97b48 1364 struct se_session *se_sess = sess->se_sess;
2d70c103 1365 struct qla_tgt_mgmt_cmd *mcmd;
06e97b48
SH		 1366 struct se_cmd *se_cmd;
1367 u32 lun = 0;
2d70c103 1368 int rc;
06e97b48
SH		 1369 bool found_lun = false;
1370
1371 spin_lock(&se_sess->sess_cmd_lock);
1372 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1373 struct qla_tgt_cmd *cmd =
1374 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
649ee054 1375 if (se_cmd->tag == abts->exchange_addr_to_abort) {
06e97b48
SH		 1376 lun = cmd->unpacked_lun;
1377 found_lun = true;
1378 break;
1379 }
1380 }
1381 spin_unlock(&se_sess->sess_cmd_lock);
1382
8b2f5ff3
SN		 1383 /* cmd not in LIO lists, look in qla list */
1384 if (!found_lun) {
1385 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1386 /* send TASK_ABORT response immediately */
1387 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
1388 return 0;
1389 } else {
1390 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
1391 "unable to find cmd in driver or LIO for tag 0x%x\n",
1392 abts->exchange_addr_to_abort);
1393 return -ENOENT;
1394 }
1395 }
2d70c103
NB		 1396
1397 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1398 "qla_target(%d): task abort (tag=%d)\n",
1399 vha->vp_idx, abts->exchange_addr_to_abort);
1400
1401 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1402 if (mcmd == NULL) {
1403 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1404 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1405 vha->vp_idx, __func__);
1406 return -ENOMEM;
1407 }
1408 memset(mcmd, 0, sizeof(*mcmd));
1409
1410 mcmd->sess = sess;
1411 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
80187f8e 1412 mcmd->reset_count = vha->hw->chip_reset;
2d70c103 1413
06e97b48 1414 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
2d70c103
NB		 1415 abts->exchange_addr_to_abort);
1416 if (rc != 0) {
1417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1418 "qla_target(%d): tgt_ops->handle_tmr()"
1419 " failed: %d", vha->vp_idx, rc);
1420 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1421 return -EFAULT;
1422 }
1423
1424 return 0;
1425}
1426
1427/*
1428 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1429 */
1430static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1431 struct abts_recv_from_24xx *abts)
1432{
1433 struct qla_hw_data *ha = vha->hw;
1434 struct qla_tgt_sess *sess;
1435 uint32_t tag = abts->exchange_addr_to_abort;
1436 uint8_t s_id[3];
1437 int rc;
1438
1439 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1440 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1441 "qla_target(%d): ABTS: Abort Sequence not "
1442 "supported\n", vha->vp_idx);
1443 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1444 return;
1445 }
1446
1447 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1448 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1449 "qla_target(%d): ABTS: Unknown Exchange "
1450 "Address received\n", vha->vp_idx);
1451 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1452 return;
1453 }
1454
1455 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1456 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1457 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1458 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1459 le32_to_cpu(abts->fcp_hdr_le.parameter));
1460
1461 s_id[0] = abts->fcp_hdr_le.s_id[2];
1462 s_id[1] = abts->fcp_hdr_le.s_id[1];
1463 s_id[2] = abts->fcp_hdr_le.s_id[0];
1464
1465 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1466 if (!sess) {
1467 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1468 "qla_target(%d): task abort for non-existant session\n",
1469 vha->vp_idx);
0e8cd71c 1470 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 1471 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1472 if (rc != 0) {
1473 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1474 false);
1475 }
1476 return;
1477 }
1478
e52a8b45
AP		 1479 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1480 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1481 return;
1482 }
1483
2d70c103
NB		 1484 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1485 if (rc != 0) {
1486 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1487 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1488 vha->vp_idx, rc);
1489 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1490 return;
1491 }
1492}
1493
1494/*
1495 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1496 */
1497static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1498 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1499{
1500 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1501 struct ctio7_to_24xx *ctio;
33a5fcee 1502 uint16_t temp;
2d70c103
NB		 1503
1504 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1505 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1506 ha, atio, resp_code);
1507
1508 /* Send marker if required */
1509 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1510 return;
1511
1512 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1513 if (ctio == NULL) {
1514 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1515 "qla_target(%d): %s failed: unable to allocate "
1516 "request packet\n", ha->vp_idx, __func__);
1517 return;
1518 }
1519
1520 ctio->entry_type = CTIO_TYPE7;
1521 ctio->entry_count = 1;
1522 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1523 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 1524 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1525 ctio->vp_index = ha->vp_idx;
1526 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1527 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1528 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1529 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1530 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 1531 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
33a5fcee
QT		 1532 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1533 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 1534 ctio->u.status1.scsi_status =
ad950360
BVA		 1535 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1536 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 1537 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 1538
63163e06
HM		 1539 /* Memory Barrier */
1540 wmb();
2d70c103
NB		 1541 qla2x00_start_iocbs(ha, ha->req);
1542}
1543
1544void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1545{
1546 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1547}
1548EXPORT_SYMBOL(qlt_free_mcmd);
1549
1550/* callback from target fabric module code */
1551void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1552{
1553 struct scsi_qla_host *vha = mcmd->sess->vha;
1554 struct qla_hw_data *ha = vha->hw;
1555 unsigned long flags;
1556
1557 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1558 "TM response mcmd (%p) status %#x state %#x",
1559 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1560
1561 spin_lock_irqsave(&ha->hardware_lock, flags);
b6a029e1
AE		 1562
1563 if (qla2x00_reset_active(vha) || mcmd->reset_count != ha->chip_reset) {
1564 /*
1565 * Either a chip reset is active or this request was from
1566 * previous life, just abort the processing.
1567 */
1568 ql_dbg(ql_dbg_async, vha, 0xe100,
1569 "RESET-TMR active/old-count/new-count = %d/%d/%d.\n",
1570 qla2x00_reset_active(vha), mcmd->reset_count,
1571 ha->chip_reset);
1572 ha->tgt.tgt_ops->free_mcmd(mcmd);
1573 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1574 return;
1575 }
1576
2d70c103
NB		 1577 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1578 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1579 0, 0, 0, 0, 0, 0);
1580 else {
1581 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1582 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1583 mcmd->fc_tm_rsp, false);
1584 else
1585 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1586 mcmd->fc_tm_rsp);
1587 }
1588 /*
1589 * Make the callback for ->free_mcmd() to queue_work() and invoke
1590 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1591 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1592 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1593 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1594 * qlt_xmit_tm_rsp() returns here..
1595 */
1596 ha->tgt.tgt_ops->free_mcmd(mcmd);
1597 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1598}
1599EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1600
1601/* No locks */
1602static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1603{
1604 struct qla_tgt_cmd *cmd = prm->cmd;
1605
1606 BUG_ON(cmd->sg_cnt == 0);
1607
1608 prm->sg = (struct scatterlist *)cmd->sg;
1609 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1610 cmd->sg_cnt, cmd->dma_data_direction);
1611 if (unlikely(prm->seg_cnt == 0))
1612 goto out_err;
1613
1614 prm->cmd->sg_mapped = 1;
1615
f83adb61
QT		 1616 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1617 /*
1618 * If greater than four sg entries then we need to allocate
1619 * the continuation entries
1620 */
1621 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1622 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1623 prm->tgt->datasegs_per_cmd,
1624 prm->tgt->datasegs_per_cont);
1625 } else {
1626 /* DIF */
1627 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1628 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1629 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1630 prm->tot_dsds = prm->seg_cnt;
1631 } else
1632 prm->tot_dsds = prm->seg_cnt;
1633
1634 if (cmd->prot_sg_cnt) {
1635 prm->prot_sg = cmd->prot_sg;
1636 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1637 cmd->prot_sg, cmd->prot_sg_cnt,
1638 cmd->dma_data_direction);
1639 if (unlikely(prm->prot_seg_cnt == 0))
1640 goto out_err;
1641
1642 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1643 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1644 /* Dif Bundling not support here */
1645 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1646 cmd->blk_sz);
1647 prm->tot_dsds += prm->prot_seg_cnt;
1648 } else
1649 prm->tot_dsds += prm->prot_seg_cnt;
1650 }
1651 }
2d70c103 1652
2d70c103
NB		 1653 return 0;
1654
1655out_err:
1656 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1657 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1658 0, prm->cmd->sg_cnt);
1659 return -1;
1660}
1661
f9b6721a 1662static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103
NB		 1663{
1664 struct qla_hw_data *ha = vha->hw;
1665
f9b6721a
JE		 1666 if (!cmd->sg_mapped)
1667 return;
1668
2d70c103
NB		 1669 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1670 cmd->sg_mapped = 0;
f83adb61
QT		 1671
1672 if (cmd->prot_sg_cnt)
1673 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1674 cmd->dma_data_direction);
1675
1676 if (cmd->ctx_dsd_alloced)
1677 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1678
1679 if (cmd->ctx)
1680 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 1681}
1682
1683static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1684 uint32_t req_cnt)
1685{
d29fb736 1686 uint32_t cnt, cnt_in;
2d70c103
NB		 1687
1688 if (vha->req->cnt < (req_cnt + 2)) {
75554b68 1689 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
d29fb736 1690 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
2d70c103 1691
2d70c103
NB		 1692 if (vha->req->ring_index < cnt)
1693 vha->req->cnt = cnt - vha->req->ring_index;
1694 else
1695 vha->req->cnt = vha->req->length -
1696 (vha->req->ring_index - cnt);
1697 }
1698
1699 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
667024a3 1700 ql_dbg(ql_dbg_io, vha, 0x305a,
d29fb736
SK		 1701 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n",
1702 vha->vp_idx, vha->req->ring_index,
1703 vha->req->cnt, req_cnt, cnt, cnt_in, vha->req->length);
2d70c103
NB		 1704 return -EAGAIN;
1705 }
1706 vha->req->cnt -= req_cnt;
1707
1708 return 0;
1709}
1710
1711/*
1712 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1713 */
1714static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1715{
1716 /* Adjust ring index. */
1717 vha->req->ring_index++;
1718 if (vha->req->ring_index == vha->req->length) {
1719 vha->req->ring_index = 0;
1720 vha->req->ring_ptr = vha->req->ring;
1721 } else {
1722 vha->req->ring_ptr++;
1723 }
1724 return (cont_entry_t *)vha->req->ring_ptr;
1725}
1726
1727/* ha->hardware_lock supposed to be held on entry */
1728static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1729{
1730 struct qla_hw_data *ha = vha->hw;
1731 uint32_t h;
1732
1733 h = ha->tgt.current_handle;
1734 /* always increment cmd handle */
1735 do {
1736 ++h;
8d93f550 1737 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 1738 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1739 if (h == ha->tgt.current_handle) {
667024a3 1740 ql_dbg(ql_dbg_io, vha, 0x305b,
2d70c103
NB		 1741 "qla_target(%d): Ran out of "
1742 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1743 h = QLA_TGT_NULL_HANDLE;
1744 break;
1745 }
1746 } while ((h == QLA_TGT_NULL_HANDLE) ||
1747 (h == QLA_TGT_SKIP_HANDLE) ||
1748 (ha->tgt.cmds[h-1] != NULL));
1749
1750 if (h != QLA_TGT_NULL_HANDLE)
1751 ha->tgt.current_handle = h;
1752
1753 return h;
1754}
1755
1756/* ha->hardware_lock supposed to be held on entry */
1757static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1758 struct scsi_qla_host *vha)
1759{
1760 uint32_t h;
1761 struct ctio7_to_24xx *pkt;
1762 struct qla_hw_data *ha = vha->hw;
1763 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 1764 uint16_t temp;
2d70c103
NB		 1765
1766 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1767 prm->pkt = pkt;
1768 memset(pkt, 0, sizeof(*pkt));
1769
1770 pkt->entry_type = CTIO_TYPE7;
1771 pkt->entry_count = (uint8_t)prm->req_cnt;
1772 pkt->vp_index = vha->vp_idx;
1773
1774 h = qlt_make_handle(vha);
1775 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1776 /*
1777 * CTIO type 7 from the firmware doesn't provide a way to
1778 * know the initiator's LOOP ID, hence we can't find
1779 * the session and, so, the command.
1780 */
1781 return -EAGAIN;
1782 } else
1783 ha->tgt.cmds[h-1] = prm->cmd;
1784
1785 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1786 pkt->nport_handle = prm->cmd->loop_id;
ad950360 1787 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1788 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1789 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1790 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1791 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1792 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
33a5fcee
QT		 1793 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1794 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 1795 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1796
2d70c103
NB		 1797 return 0;
1798}
1799
1800/*
1801 * ha->hardware_lock supposed to be held on entry. We have already made sure
1802 * that there is sufficient amount of request entries to not drop it.
1803 */
1804static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1805 struct scsi_qla_host *vha)
1806{
1807 int cnt;
1808 uint32_t *dword_ptr;
1809 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1810
1811 /* Build continuation packets */
1812 while (prm->seg_cnt > 0) {
1813 cont_a64_entry_t *cont_pkt64 =
1814 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1815
1816 /*
1817 * Make sure that from cont_pkt64 none of
1818 * 64-bit specific fields used for 32-bit
1819 * addressing. Cast to (cont_entry_t *) for
1820 * that.
1821 */
1822
1823 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1824
1825 cont_pkt64->entry_count = 1;
1826 cont_pkt64->sys_define = 0;
1827
1828 if (enable_64bit_addressing) {
1829 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1830 dword_ptr =
1831 (uint32_t *)&cont_pkt64->dseg_0_address;
1832 } else {
1833 cont_pkt64->entry_type = CONTINUE_TYPE;
1834 dword_ptr =
1835 (uint32_t *)&((cont_entry_t *)
1836 cont_pkt64)->dseg_0_address;
1837 }
1838
1839 /* Load continuation entry data segments */
1840 for (cnt = 0;
1841 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1842 cnt++, prm->seg_cnt--) {
1843 *dword_ptr++ =
1844 cpu_to_le32(pci_dma_lo32
1845 (sg_dma_address(prm->sg)));
1846 if (enable_64bit_addressing) {
1847 *dword_ptr++ =
1848 cpu_to_le32(pci_dma_hi32
1849 (sg_dma_address
1850 (prm->sg)));
1851 }
1852 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1853
2d70c103
NB		 1854 prm->sg = sg_next(prm->sg);
1855 }
1856 }
1857}
1858
1859/*
1860 * ha->hardware_lock supposed to be held on entry. We have already made sure
1861 * that there is sufficient amount of request entries to not drop it.
1862 */
1863static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1864 struct scsi_qla_host *vha)
1865{
1866 int cnt;
1867 uint32_t *dword_ptr;
1868 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1869 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1870
2d70c103
NB		 1871 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1872
1873 /* Setup packet address segment pointer */
1874 dword_ptr = pkt24->u.status0.dseg_0_address;
1875
1876 /* Set total data segment count */
1877 if (prm->seg_cnt)
1878 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1879
1880 if (prm->seg_cnt == 0) {
1881 /* No data transfer */
1882 *dword_ptr++ = 0;
1883 *dword_ptr = 0;
1884 return;
1885 }
1886
1887 /* If scatter gather */
2d70c103
NB		 1888
1889 /* Load command entry data segments */
1890 for (cnt = 0;
1891 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1892 cnt++, prm->seg_cnt--) {
1893 *dword_ptr++ =
1894 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1895 if (enable_64bit_addressing) {
1896 *dword_ptr++ =
1897 cpu_to_le32(pci_dma_hi32(
1898 sg_dma_address(prm->sg)));
1899 }
1900 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1901
2d70c103
NB		 1902 prm->sg = sg_next(prm->sg);
1903 }
1904
1905 qlt_load_cont_data_segments(prm, vha);
1906}
1907
1908static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1909{
1910 return cmd->bufflen > 0;
1911}
1912
1913/*
1914 * Called without ha->hardware_lock held
1915 */
1916static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1917 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1918 uint32_t *full_req_cnt)
1919{
1920 struct qla_tgt *tgt = cmd->tgt;
1921 struct scsi_qla_host *vha = tgt->vha;
1922 struct qla_hw_data *ha = vha->hw;
1923 struct se_cmd *se_cmd = &cmd->se_cmd;
1924
2d70c103
NB		 1925 prm->cmd = cmd;
1926 prm->tgt = tgt;
1927 prm->rq_result = scsi_status;
1928 prm->sense_buffer = &cmd->sense_buffer[0];
1929 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1930 prm->sg = NULL;
1931 prm->seg_cnt = -1;
1932 prm->req_cnt = 1;
1933 prm->add_status_pkt = 0;
1934
2d70c103
NB		 1935 /* Send marker if required */
1936 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1937 return -EFAULT;
1938
2d70c103
NB		 1939 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1940 if (qlt_pci_map_calc_cnt(prm) != 0)
1941 return -EAGAIN;
1942 }
1943
1944 *full_req_cnt = prm->req_cnt;
1945
1946 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1947 prm->residual = se_cmd->residual_count;
667024a3 1948 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
649ee054
BVA		 1949 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
1950 prm->residual, se_cmd->tag,
1951 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1952 cmd->bufflen, prm->rq_result);
2d70c103
NB		 1953 prm->rq_result |= SS_RESIDUAL_UNDER;
1954 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1955 prm->residual = se_cmd->residual_count;
667024a3 1956 ql_dbg(ql_dbg_io, vha, 0x305d,
649ee054
BVA		 1957 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
1958 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
1959 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 1960 prm->rq_result |= SS_RESIDUAL_OVER;
1961 }
1962
1963 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1964 /*
1965 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1966 * ignored in *xmit_response() below
1967 */
1968 if (qlt_has_data(cmd)) {
1969 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1970 (IS_FWI2_CAPABLE(ha) &&
1971 (prm->rq_result != 0))) {
1972 prm->add_status_pkt = 1;
1973 (*full_req_cnt)++;
1974 }
1975 }
1976 }
1977
2d70c103
NB		 1978 return 0;
1979}
1980
1981static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1982 struct qla_tgt_cmd *cmd, int sending_sense)
1983{
1984 if (ha->tgt.enable_class_2)
1985 return 0;
1986
1987 if (sending_sense)
1988 return cmd->conf_compl_supported;
1989 else
1990 return ha->tgt.enable_explicit_conf &&
1991 cmd->conf_compl_supported;
1992}
1993
1994#ifdef CONFIG_QLA_TGT_DEBUG_SRR
1995/*
1996 * Original taken from the XFS code
1997 */
1998static unsigned long qlt_srr_random(void)
1999{
2000 static int Inited;
2001 static unsigned long RandomValue;
2002 static DEFINE_SPINLOCK(lock);
2003 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
2004 register long rv;
2005 register long lo;
2006 register long hi;
2007 unsigned long flags;
2008
2009 spin_lock_irqsave(&lock, flags);
2010 if (!Inited) {
2011 RandomValue = jiffies;
2012 Inited = 1;
2013 }
2014 rv = RandomValue;
2015 hi = rv / 127773;
2016 lo = rv % 127773;
2017 rv = 16807 * lo - 2836 * hi;
2018 if (rv <= 0)
2019 rv += 2147483647;
2020 RandomValue = rv;
2021 spin_unlock_irqrestore(&lock, flags);
2022 return rv;
2023}
2024
2025static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
2026{
2027#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
2028 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
2029 == 50) {
2030 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
2031 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
649ee054 2032 "Dropping cmd %p (tag %d) status", cmd, se_cmd->tag);
2d70c103
NB		 2033 }
2034#endif
2035 /*
2036 * It's currently not possible to simulate SRRs for FCP_WRITE without
2037 * a physical link layer failure, so don't even try here..
2038 */
2039 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
2040 return;
2041
2042 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
2043 ((qlt_srr_random() % 100) == 20)) {
2044 int i, leave = 0;
2045 unsigned int tot_len = 0;
2046
2047 while (leave == 0)
2048 leave = qlt_srr_random() % cmd->sg_cnt;
2049
2050 for (i = 0; i < leave; i++)
2051 tot_len += cmd->sg[i].length;
2052
2053 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
2054 "Cutting cmd %p (tag %d) buffer"
2055 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
649ee054 2056 " cmd->sg_cnt %d)", cmd, se_cmd->tag, tot_len, leave,
2d70c103
NB		 2057 cmd->bufflen, cmd->sg_cnt);
2058
2059 cmd->bufflen = tot_len;
2060 cmd->sg_cnt = leave;
2061 }
2062
2063 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
2064 unsigned int offset = qlt_srr_random() % cmd->bufflen;
2065
2066 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
2067 "Cutting cmd %p (tag %d) buffer head "
649ee054 2068 "to offset %d (cmd->bufflen %d)", cmd, se_cmd->tag, offset,
2d70c103
NB		 2069 cmd->bufflen);
2070 if (offset == 0)
2071 *xmit_type &= ~QLA_TGT_XMIT_DATA;
2072 else if (qlt_set_data_offset(cmd, offset)) {
2073 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
649ee054 2074 "qlt_set_data_offset() failed (tag %d)", se_cmd->tag);
2d70c103
NB		 2075 }
2076 }
2077}
2078#else
2079static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
2080{}
2081#endif
2082
2083static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2084 struct qla_tgt_prm *prm)
2085{
2086 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2087 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2088 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2d70c103 2089 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
ad950360 2090 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2091 CTIO7_FLAGS_EXPLICIT_CONFORM |
2092 CTIO7_FLAGS_CONFORM_REQ);
2093 }
2094 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2095 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2096 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2097 int i;
2098
2099 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
2100 if (prm->cmd->se_cmd.scsi_status != 0) {
2101 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
2102 "Skipping EXPLICIT_CONFORM and "
2103 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2104 "non GOOD status\n");
2105 goto skip_explict_conf;
2106 }
ad950360 2107 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2108 CTIO7_FLAGS_EXPLICIT_CONFORM |
2109 CTIO7_FLAGS_CONFORM_REQ);
2110 }
2111skip_explict_conf:
2112 ctio->u.status1.flags &=
ad950360 2113 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2114 ctio->u.status1.flags |=
ad950360 2115 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2116 ctio->u.status1.scsi_status |=
ad950360 2117 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2118 ctio->u.status1.sense_length =
2119 cpu_to_le16(prm->sense_buffer_len);
2120 for (i = 0; i < prm->sense_buffer_len/4; i++)
2121 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2122 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2123#if 0
2124 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
2125 static int q;
2126 if (q < 10) {
2127 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
2128 "qla_target(%d): %d bytes of sense "
2129 "lost", prm->tgt->ha->vp_idx,
2130 prm->sense_buffer_len % 4);
2131 q++;
2132 }
2133 }
2134#endif
2135 } else {
2136 ctio->u.status1.flags &=
ad950360 2137 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2138 ctio->u.status1.flags |=
ad950360 2139 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2140 ctio->u.status1.sense_length = 0;
2141 memset(ctio->u.status1.sense_data, 0,
2142 sizeof(ctio->u.status1.sense_data));
2143 }
2144
2145 /* Sense with len > 24, is it possible ??? */
2146}
2147
f83adb61
QT		 2148
2149
2150/* diff */
2151static inline int
2152qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2153{
2154 /*
2155 * Uncomment when corresponding SCSI changes are done.
2156 *
2157 if (!sp->cmd->prot_chk)
2158 return 0;
2159 *
2160 */
2161 switch (se_cmd->prot_op) {
2162 case TARGET_PROT_DOUT_INSERT:
2163 case TARGET_PROT_DIN_STRIP:
2164 if (ql2xenablehba_err_chk >= 1)
2165 return 1;
2166 break;
2167 case TARGET_PROT_DOUT_PASS:
2168 case TARGET_PROT_DIN_PASS:
2169 if (ql2xenablehba_err_chk >= 2)
2170 return 1;
2171 break;
2172 case TARGET_PROT_DIN_INSERT:
2173 case TARGET_PROT_DOUT_STRIP:
2174 return 1;
2175 default:
2176 break;
2177 }
2178 return 0;
2179}
2180
2181/*
2182 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
2183 *
2184 */
2185static inline void
2186qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
2187{
2188 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2189
2190 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
2191 * have been immplemented by TCM, before AppTag is avail.
2192 * Look for modesense_handlers[]
2193 */
c7ee3bd4 2194 ctx->app_tag = 0;
f83adb61
QT		 2195 ctx->app_tag_mask[0] = 0x0;
2196 ctx->app_tag_mask[1] = 0x0;
2197
2198 switch (se_cmd->prot_type) {
2199 case TARGET_DIF_TYPE0_PROT:
2200 /*
2201 * No check for ql2xenablehba_err_chk, as it would be an
2202 * I/O error if hba tag generation is not done.
2203 */
2204 ctx->ref_tag = cpu_to_le32(lba);
2205
2206 if (!qlt_hba_err_chk_enabled(se_cmd))
2207 break;
2208
2209 /* enable ALL bytes of the ref tag */
2210 ctx->ref_tag_mask[0] = 0xff;
2211 ctx->ref_tag_mask[1] = 0xff;
2212 ctx->ref_tag_mask[2] = 0xff;
2213 ctx->ref_tag_mask[3] = 0xff;
2214 break;
2215 /*
2216 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2217 * 16 bit app tag.
2218 */
2219 case TARGET_DIF_TYPE1_PROT:
2220 ctx->ref_tag = cpu_to_le32(lba);
2221
2222 if (!qlt_hba_err_chk_enabled(se_cmd))
2223 break;
2224
2225 /* enable ALL bytes of the ref tag */
2226 ctx->ref_tag_mask[0] = 0xff;
2227 ctx->ref_tag_mask[1] = 0xff;
2228 ctx->ref_tag_mask[2] = 0xff;
2229 ctx->ref_tag_mask[3] = 0xff;
2230 break;
2231 /*
2232 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2233 * match LBA in CDB + N
2234 */
2235 case TARGET_DIF_TYPE2_PROT:
2236 ctx->ref_tag = cpu_to_le32(lba);
2237
2238 if (!qlt_hba_err_chk_enabled(se_cmd))
2239 break;
2240
2241 /* enable ALL bytes of the ref tag */
2242 ctx->ref_tag_mask[0] = 0xff;
2243 ctx->ref_tag_mask[1] = 0xff;
2244 ctx->ref_tag_mask[2] = 0xff;
2245 ctx->ref_tag_mask[3] = 0xff;
2246 break;
2247
2248 /* For Type 3 protection: 16 bit GUARD only */
2249 case TARGET_DIF_TYPE3_PROT:
2250 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2251 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2252 break;
2253 }
2254}
2255
2256
2257static inline int
2258qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2259{
2260 uint32_t *cur_dsd;
f83adb61
QT		 2261 uint32_t transfer_length = 0;
2262 uint32_t data_bytes;
2263 uint32_t dif_bytes;
2264 uint8_t bundling = 1;
2265 uint8_t *clr_ptr;
2266 struct crc_context *crc_ctx_pkt = NULL;
2267 struct qla_hw_data *ha;
2268 struct ctio_crc2_to_fw *pkt;
2269 dma_addr_t crc_ctx_dma;
2270 uint16_t fw_prot_opts = 0;
2271 struct qla_tgt_cmd *cmd = prm->cmd;
2272 struct se_cmd *se_cmd = &cmd->se_cmd;
2273 uint32_t h;
2274 struct atio_from_isp *atio = &prm->cmd->atio;
c7ee3bd4 2275 uint16_t t16;
f83adb61 2276
f83adb61
QT		 2277 ha = vha->hw;
2278
2279 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2280 prm->pkt = pkt;
2281 memset(pkt, 0, sizeof(*pkt));
2282
2283 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2284 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2285 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2286 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2287
2288 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2289 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2290 bundling = 0;
2291
2292 /* Compute dif len and adjust data len to incude protection */
2293 data_bytes = cmd->bufflen;
2294 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2295
2296 switch (se_cmd->prot_op) {
2297 case TARGET_PROT_DIN_INSERT:
2298 case TARGET_PROT_DOUT_STRIP:
2299 transfer_length = data_bytes;
2300 data_bytes += dif_bytes;
2301 break;
2302
2303 case TARGET_PROT_DIN_STRIP:
2304 case TARGET_PROT_DOUT_INSERT:
2305 case TARGET_PROT_DIN_PASS:
2306 case TARGET_PROT_DOUT_PASS:
2307 transfer_length = data_bytes + dif_bytes;
2308 break;
2309
2310 default:
2311 BUG();
2312 break;
2313 }
2314
2315 if (!qlt_hba_err_chk_enabled(se_cmd))
2316 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2317 /* HBA error checking enabled */
2318 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2319 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2320 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2321 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2322 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2323 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2324 }
2325
2326 switch (se_cmd->prot_op) {
2327 case TARGET_PROT_DIN_INSERT:
2328 case TARGET_PROT_DOUT_INSERT:
2329 fw_prot_opts |= PO_MODE_DIF_INSERT;
2330 break;
2331 case TARGET_PROT_DIN_STRIP:
2332 case TARGET_PROT_DOUT_STRIP:
2333 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2334 break;
2335 case TARGET_PROT_DIN_PASS:
2336 case TARGET_PROT_DOUT_PASS:
2337 fw_prot_opts |= PO_MODE_DIF_PASS;
2338 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2339 break;
2340 default:/* Normal Request */
2341 fw_prot_opts |= PO_MODE_DIF_PASS;
2342 break;
2343 }
2344
2345
2346 /* ---- PKT ---- */
2347 /* Update entry type to indicate Command Type CRC_2 IOCB */
2348 pkt->entry_type = CTIO_CRC2;
2349 pkt->entry_count = 1;
2350 pkt->vp_index = vha->vp_idx;
2351
2352 h = qlt_make_handle(vha);
2353 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2354 /*
2355 * CTIO type 7 from the firmware doesn't provide a way to
2356 * know the initiator's LOOP ID, hence we can't find
2357 * the session and, so, the command.
2358 */
2359 return -EAGAIN;
2360 } else
2361 ha->tgt.cmds[h-1] = prm->cmd;
2362
2363
2364 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2365 pkt->nport_handle = prm->cmd->loop_id;
ad950360 2366 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2367 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2368 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2369 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2370 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2371
2372 /* silence compile warning */
2373 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2374 pkt->ox_id = cpu_to_le16(t16);
2375
2376 t16 = (atio->u.isp24.attr << 9);
2377 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2378 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2379
2380 /* Set transfer direction */
2381 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2382 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2383 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2384 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61
QT		 2385
2386
2387 pkt->dseg_count = prm->tot_dsds;
2388 /* Fibre channel byte count */
2389 pkt->transfer_length = cpu_to_le32(transfer_length);
2390
2391
2392 /* ----- CRC context -------- */
2393
2394 /* Allocate CRC context from global pool */
2395 crc_ctx_pkt = cmd->ctx =
2396 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2397
2398 if (!crc_ctx_pkt)
2399 goto crc_queuing_error;
2400
2401 /* Zero out CTX area. */
2402 clr_ptr = (uint8_t *)crc_ctx_pkt;
2403 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2404
2405 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2406 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2407
2408 /* Set handle */
2409 crc_ctx_pkt->handle = pkt->handle;
2410
2411 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2412
2413 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2414 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2415 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2416
2417
2418 if (!bundling) {
2419 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2420 } else {
2421 /*
2422 * Configure Bundling if we need to fetch interlaving
2423 * protection PCI accesses
2424 */
2425 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2426 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2427 crc_ctx_pkt->u.bundling.dseg_count =
2428 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2429 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2430 }
2431
2432 /* Finish the common fields of CRC pkt */
2433 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2434 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2435 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 2436 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61
QT		 2437
2438
2439 /* Walks data segments */
ad950360 2440 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 2441
2442 if (!bundling && prm->prot_seg_cnt) {
2443 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2444 prm->tot_dsds, cmd))
2445 goto crc_queuing_error;
2446 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2447 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2448 goto crc_queuing_error;
2449
2450 if (bundling && prm->prot_seg_cnt) {
2451 /* Walks dif segments */
c7ee3bd4 2452 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2453
2454 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2455 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2456 prm->prot_seg_cnt, cmd))
2457 goto crc_queuing_error;
2458 }
2459 return QLA_SUCCESS;
2460
2461crc_queuing_error:
2462 /* Cleanup will be performed by the caller */
2463
2464 return QLA_FUNCTION_FAILED;
2465}
2466
2467
2d70c103
NB		 2468/*
2469 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2470 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2471 */
2472int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2473 uint8_t scsi_status)
2474{
2475 struct scsi_qla_host *vha = cmd->vha;
2476 struct qla_hw_data *ha = vha->hw;
2477 struct ctio7_to_24xx *pkt;
2478 struct qla_tgt_prm prm;
2479 uint32_t full_req_cnt = 0;
2480 unsigned long flags = 0;
2481 int res;
2482
a6ca8878
AP		 2483 spin_lock_irqsave(&ha->hardware_lock, flags);
2484 if (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
2485 cmd->state = QLA_TGT_STATE_PROCESSED;
2486 if (cmd->sess->logout_completed)
2487 /* no need to terminate. FW already freed exchange. */
2488 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2489 else
2490 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2491 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2492 return 0;
2493 }
2494 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2495
2d70c103
NB		 2496 memset(&prm, 0, sizeof(prm));
2497 qlt_check_srr_debug(cmd, &xmit_type);
2498
2499 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 2500 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2501 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2502 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2503 &cmd->se_cmd);
2d70c103
NB		 2504
2505 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2506 &full_req_cnt);
2507 if (unlikely(res != 0)) {
2d70c103
NB		 2508 return res;
2509 }
2510
2511 spin_lock_irqsave(&ha->hardware_lock, flags);
2512
ce1025cd
HM		 2513 if (xmit_type == QLA_TGT_XMIT_STATUS)
2514 vha->tgt_counters.core_qla_snd_status++;
2515 else
2516 vha->tgt_counters.core_qla_que_buf++;
2517
b6a029e1
AE		 2518 if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
2519 /*
2520 * Either a chip reset is active or this request was from
2521 * previous life, just abort the processing.
2522 */
2523 cmd->state = QLA_TGT_STATE_PROCESSED;
2524 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2525 ql_dbg(ql_dbg_async, vha, 0xe101,
2526 "RESET-RSP active/old-count/new-count = %d/%d/%d.\n",
2527 qla2x00_reset_active(vha), cmd->reset_count,
2528 ha->chip_reset);
2529 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2530 return 0;
2531 }
2532
2d70c103
NB		 2533 /* Does F/W have an IOCBs for this request */
2534 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2535 if (unlikely(res))
2536 goto out_unmap_unlock;
2537
f83adb61
QT		 2538 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2539 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2540 else
2541 res = qlt_24xx_build_ctio_pkt(&prm, vha);
810e30bc
QT		 2542 if (unlikely(res != 0)) {
2543 vha->req->cnt += full_req_cnt;
2d70c103 2544 goto out_unmap_unlock;
810e30bc 2545 }
2d70c103
NB		 2546
2547 pkt = (struct ctio7_to_24xx *)prm.pkt;
2548
2549 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2550 pkt->u.status0.flags |=
ad950360 2551 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 2552 CTIO7_FLAGS_STATUS_MODE_0);
2553
f83adb61
QT		 2554 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2555 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2556
2557 if (prm.add_status_pkt == 0) {
2558 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2559 pkt->u.status0.scsi_status =
2560 cpu_to_le16(prm.rq_result);
2561 pkt->u.status0.residual =
2562 cpu_to_le32(prm.residual);
ad950360 2563 pkt->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2564 CTIO7_FLAGS_SEND_STATUS);
2565 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2566 pkt->u.status0.flags |=
ad950360 2567 cpu_to_le16(
2d70c103
NB		 2568 CTIO7_FLAGS_EXPLICIT_CONFORM |
2569 CTIO7_FLAGS_CONFORM_REQ);
2570 }
2571 }
2572
2573 } else {
2574 /*
2575 * We have already made sure that there is sufficient
2576 * amount of request entries to not drop HW lock in
2577 * req_pkt().
2578 */
2579 struct ctio7_to_24xx *ctio =
2580 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2581
667024a3
AE		 2582 ql_dbg(ql_dbg_io, vha, 0x305e,
2583 "Building additional status packet 0x%p.\n",
2584 ctio);
2d70c103 2585
f83adb61
QT		 2586 /*
2587 * T10Dif: ctio_crc2_to_fw overlay ontop of
2588 * ctio7_to_24xx
2589 */
2d70c103 2590 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 2591 /* reset back to CTIO7 */
2d70c103 2592 ctio->entry_count = 1;
f83adb61 2593 ctio->entry_type = CTIO_TYPE7;
2d70c103 2594 ctio->dseg_count = 0;
ad950360 2595 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 2596 CTIO7_FLAGS_DATA_IN);
2597
2598 /* Real finish is ctio_m1's finish */
2599 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 2600 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 2601 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 2602
2603 /* qlt_24xx_init_ctio_to_isp will correct
2604 * all neccessary fields that's part of CTIO7.
2605 * There should be no residual of CTIO-CRC2 data.
2606 */
2d70c103
NB		 2607 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2608 &prm);
2609 pr_debug("Status CTIO7: %p\n", ctio);
2610 }
2611 } else
2612 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2613
2614
2615 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 2616 cmd->cmd_sent_to_fw = 1;
2d70c103 2617
63163e06
HM		 2618 /* Memory Barrier */
2619 wmb();
2d70c103
NB		 2620 qla2x00_start_iocbs(vha, vha->req);
2621 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2622
2623 return 0;
2624
2625out_unmap_unlock:
f9b6721a 2626 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2627 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2628
2629 return res;
2630}
2631EXPORT_SYMBOL(qlt_xmit_response);
2632
2633int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2634{
2635 struct ctio7_to_24xx *pkt;
2636 struct scsi_qla_host *vha = cmd->vha;
2637 struct qla_hw_data *ha = vha->hw;
2638 struct qla_tgt *tgt = cmd->tgt;
2639 struct qla_tgt_prm prm;
2640 unsigned long flags;
2641 int res = 0;
2642
2643 memset(&prm, 0, sizeof(prm));
2644 prm.cmd = cmd;
2645 prm.tgt = tgt;
2646 prm.sg = NULL;
2647 prm.req_cnt = 1;
2648
2649 /* Send marker if required */
2650 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2651 return -EIO;
2652
2d70c103
NB		 2653 /* Calculate number of entries and segments required */
2654 if (qlt_pci_map_calc_cnt(&prm) != 0)
2655 return -EAGAIN;
2656
2657 spin_lock_irqsave(&ha->hardware_lock, flags);
2658
a6ca8878
AP		 2659 if (qla2x00_reset_active(vha) || (cmd->reset_count != ha->chip_reset) ||
2660 (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)) {
b6a029e1
AE		 2661 /*
2662 * Either a chip reset is active or this request was from
2663 * previous life, just abort the processing.
2664 */
2665 cmd->state = QLA_TGT_STATE_NEED_DATA;
2666 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2667 ql_dbg(ql_dbg_async, vha, 0xe102,
2668 "RESET-XFR active/old-count/new-count = %d/%d/%d.\n",
2669 qla2x00_reset_active(vha), cmd->reset_count,
2670 ha->chip_reset);
2671 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2672 return 0;
2673 }
2674
2d70c103
NB		 2675 /* Does F/W have an IOCBs for this request */
2676 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2677 if (res != 0)
2678 goto out_unlock_free_unmap;
f83adb61
QT		 2679 if (cmd->se_cmd.prot_op)
2680 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2681 else
2682 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 2683
810e30bc
QT		 2684 if (unlikely(res != 0)) {
2685 vha->req->cnt += prm.req_cnt;
2d70c103 2686 goto out_unlock_free_unmap;
810e30bc
QT		 2687 }
2688
2d70c103 2689 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 2690 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 2691 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 2692
2693 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2694 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2695
2696 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 2697 cmd->cmd_sent_to_fw = 1;
2d70c103 2698
63163e06
HM		 2699 /* Memory Barrier */
2700 wmb();
2d70c103
NB		 2701 qla2x00_start_iocbs(vha, vha->req);
2702 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2703
2704 return res;
2705
2706out_unlock_free_unmap:
f9b6721a 2707 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2708 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2709
2710 return res;
2711}
2712EXPORT_SYMBOL(qlt_rdy_to_xfer);
2713
f83adb61
QT		 2714
2715/*
2716 * Checks the guard or meta-data for the type of error
2717 * detected by the HBA.
2718 */
2719static inline int
2720qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2721 struct ctio_crc_from_fw *sts)
2722{
2723 uint8_t *ap = &sts->actual_dif[0];
2724 uint8_t *ep = &sts->expected_dif[0];
2725 uint32_t e_ref_tag, a_ref_tag;
2726 uint16_t e_app_tag, a_app_tag;
2727 uint16_t e_guard, a_guard;
2728 uint64_t lba = cmd->se_cmd.t_task_lba;
2729
2730 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2731 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2732 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2733
2734 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2735 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2736 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2737
2738 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2739 "iocb(s) %p Returned STATUS.\n", sts);
2740
2741 ql_dbg(ql_dbg_tgt, vha, 0xf075,
fc385045 2742 "dif check TGT cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n",
f83adb61
QT		 2743 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2744 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2745
2746 /*
2747 * Ignore sector if:
2748 * For type 3: ref & app tag is all 'f's
2749 * For type 0,1,2: app tag is all 'f's
2750 */
2751 if ((a_app_tag == 0xffff) &&
2752 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2753 (a_ref_tag == 0xffffffff))) {
2754 uint32_t blocks_done;
2755
2756 /* 2TB boundary case covered automatically with this */
2757 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2758 cmd->se_cmd.bad_sector = e_ref_tag;
2759 cmd->se_cmd.pi_err = 0;
2760 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2761 "need to return scsi good\n");
2762
2763 /* Update protection tag */
2764 if (cmd->prot_sg_cnt) {
52c82823 2765 uint32_t i, k = 0, num_ent;
f83adb61
QT		 2766 struct scatterlist *sg, *sgl;
2767
2768
2769 sgl = cmd->prot_sg;
2770
2771 /* Patch the corresponding protection tags */
2772 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2773 num_ent = sg_dma_len(sg) / 8;
2774 if (k + num_ent < blocks_done) {
2775 k += num_ent;
2776 continue;
2777 }
f83adb61
QT		 2778 k = blocks_done;
2779 break;
2780 }
2781
2782 if (k != blocks_done) {
2783 ql_log(ql_log_warn, vha, 0xf076,
2784 "unexpected tag values tag:lba=%u:%llu)\n",
2785 e_ref_tag, (unsigned long long)lba);
2786 goto out;
2787 }
2788
2789#if 0
2790 struct sd_dif_tuple *spt;
2791 /* TODO:
2792 * This section came from initiator. Is it valid here?
2793 * should ulp be override with actual val???
2794 */
2795 spt = page_address(sg_page(sg)) + sg->offset;
2796 spt += j;
2797
2798 spt->app_tag = 0xffff;
2799 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2800 spt->ref_tag = 0xffffffff;
2801#endif
2802 }
2803
2804 return 0;
2805 }
2806
2807 /* check guard */
2808 if (e_guard != a_guard) {
2809 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2810 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2811
2812 ql_log(ql_log_warn, vha, 0xe076,
2813 "Guard ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
2814 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2815 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2816 a_guard, e_guard, cmd);
2817 goto out;
2818 }
2819
2820 /* check ref tag */
2821 if (e_ref_tag != a_ref_tag) {
2822 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
2823 cmd->se_cmd.bad_sector = e_ref_tag;
2824
2825 ql_log(ql_log_warn, vha, 0xe077,
2826 "Ref Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
2827 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2828 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2829 a_guard, e_guard, cmd);
2830 goto out;
2831 }
2832
2833 /* check appl tag */
2834 if (e_app_tag != a_app_tag) {
2835 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
2836 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2837
2838 ql_log(ql_log_warn, vha, 0xe078,
2839 "App Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
2840 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2841 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2842 a_guard, e_guard, cmd);
2843 goto out;
2844 }
2845out:
2846 return 1;
2847}
2848
2849
a6ca8878
AP		 2850/* If hardware_lock held on entry, might drop it, then reaquire */
2851/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2852static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
2853 struct imm_ntfy_from_isp *ntfy)
2854{
2855 struct nack_to_isp *nack;
2856 struct qla_hw_data *ha = vha->hw;
2857 request_t *pkt;
2858 int ret = 0;
2859
2860 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
2861 "Sending TERM ELS CTIO (ha=%p)\n", ha);
2862
2863 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
2864 if (pkt == NULL) {
2865 ql_dbg(ql_dbg_tgt, vha, 0xe080,
2866 "qla_target(%d): %s failed: unable to allocate "
2867 "request packet\n", vha->vp_idx, __func__);
2868 return -ENOMEM;
2869 }
2870
2871 pkt->entry_type = NOTIFY_ACK_TYPE;
2872 pkt->entry_count = 1;
2873 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2874
2875 nack = (struct nack_to_isp *)pkt;
2876 nack->ox_id = ntfy->ox_id;
2877
2878 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
2879 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
2880 nack->u.isp24.flags = ntfy->u.isp24.flags &
2881 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2882 }
2883
2884 /* terminate */
2885 nack->u.isp24.flags |=
2886 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
2887
2888 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
2889 nack->u.isp24.status = ntfy->u.isp24.status;
2890 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
2891 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2892 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
2893 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
2894 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
2895 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
2896
2897 qla2x00_start_iocbs(vha, vha->req);
2898 return ret;
2899}
2900
2901static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
2902 struct imm_ntfy_from_isp *imm, int ha_locked)
2903{
2904 unsigned long flags = 0;
2905 int rc;
2906
2907 if (qlt_issue_marker(vha, ha_locked) < 0)
2908 return;
2909
2910 if (ha_locked) {
2911 rc = __qlt_send_term_imm_notif(vha, imm);
2912
2913#if 0 /* Todo */
2914 if (rc == -ENOMEM)
2915 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
2916#endif
2917 goto done;
2918 }
2919
2920 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2921 rc = __qlt_send_term_imm_notif(vha, imm);
2922
2923#if 0 /* Todo */
2924 if (rc == -ENOMEM)
2925 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
2926#endif
2927
2928done:
2929 if (!ha_locked)
2930 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2931}
2932
2d70c103
NB		 2933/* If hardware_lock held on entry, might drop it, then reaquire */
2934/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2935static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2936 struct qla_tgt_cmd *cmd,
2937 struct atio_from_isp *atio)
2938{
2939 struct ctio7_to_24xx *ctio24;
2940 struct qla_hw_data *ha = vha->hw;
2941 request_t *pkt;
2942 int ret = 0;
33a5fcee 2943 uint16_t temp;
2d70c103
NB		 2944
2945 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2946
b6a029e1 2947 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 2948 if (pkt == NULL) {
2949 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2950 "qla_target(%d): %s failed: unable to allocate "
2951 "request packet\n", vha->vp_idx, __func__);
2952 return -ENOMEM;
2953 }
2954
2955 if (cmd != NULL) {
2956 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2957 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2958 "qla_target(%d): Terminating cmd %p with "
2959 "incorrect state %d\n", vha->vp_idx, cmd,
2960 cmd->state);
2961 } else
2962 ret = 1;
2963 }
2964
ce1025cd 2965 vha->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 2966 pkt->entry_count = 1;
2967 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2968
2969 ctio24 = (struct ctio7_to_24xx *)pkt;
2970 ctio24->entry_type = CTIO_TYPE7;
2971 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 2972 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2973 ctio24->vp_index = vha->vp_idx;
2974 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2975 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2976 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2977 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2978 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 2979 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2d70c103 2980 CTIO7_FLAGS_TERMINATE);
33a5fcee
QT		 2981 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2982 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2983
2984 /* Most likely, it isn't needed */
2985 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2986 &atio->u.isp24.fcp_cmnd.add_cdb[
2987 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2988 if (ctio24->u.status1.residual != 0)
2989 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2990
63163e06
HM		 2991 /* Memory Barrier */
2992 wmb();
2d70c103
NB		 2993 qla2x00_start_iocbs(vha, vha->req);
2994 return ret;
2995}
2996
2997static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2998 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2999{
6bc85dd5 3000 unsigned long flags = 0;
2d70c103
NB		 3001 int rc;
3002
3003 if (qlt_issue_marker(vha, ha_locked) < 0)
3004 return;
3005
3006 if (ha_locked) {
3007 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3008 if (rc == -ENOMEM)
3009 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3010 goto done;
3011 }
3012 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3013 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3014 if (rc == -ENOMEM)
3015 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3016
2d70c103 3017done:
d564a372
QT		 3018 if (cmd && ((cmd->state != QLA_TGT_STATE_ABORTED) ||
3019 !cmd->cmd_sent_to_fw)) {
6bc85dd5
HM		 3020 if (cmd->sg_mapped)
3021 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3022 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3023 }
6bc85dd5
HM		 3024
3025 if (!ha_locked)
3026 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3027
7b898542 3028 return;
2d70c103
NB		 3029}
3030
33e79977
QT		 3031static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3032{
3033 struct list_head free_list;
3034 struct qla_tgt_cmd *cmd, *tcmd;
3035
3036 vha->hw->tgt.leak_exchg_thresh_hold =
3037 (vha->hw->fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
3038
3039 cmd = tcmd = NULL;
3040 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3041 INIT_LIST_HEAD(&free_list);
3042 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3043
3044 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3045 list_del(&cmd->cmd_list);
3046 /* This cmd was never sent to TCM. There is no need
3047 * to schedule free or call free_cmd
3048 */
3049 qlt_free_cmd(cmd);
3050 vha->hw->tgt.num_qfull_cmds_alloc--;
3051 }
3052 }
3053 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3054}
3055
3056static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3057{
3058 uint32_t total_leaked;
3059
3060 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3061
3062 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3063 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3064
3065 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3066 "Chip reset due to exchange starvation: %d/%d.\n",
3067 total_leaked, vha->hw->fw_xcb_count);
3068
3069 if (IS_P3P_TYPE(vha->hw))
3070 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3071 else
3072 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3073 qla2xxx_wake_dpc(vha);
3074 }
3075
3076}
3077
7359df25
AP		 3078void qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3079{
3080 struct qla_tgt *tgt = cmd->tgt;
3081 struct scsi_qla_host *vha = tgt->vha;
3082 struct se_cmd *se_cmd = &cmd->se_cmd;
3083
3084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3085 "qla_target(%d): terminating exchange for aborted cmd=%p "
3086 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3087 se_cmd->tag);
3088
3089 cmd->state = QLA_TGT_STATE_ABORTED;
3090 cmd->cmd_flags |= BIT_6;
3091
3092 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
3093}
3094EXPORT_SYMBOL(qlt_abort_cmd);
3095
2d70c103
NB		 3096void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3097{
51a07f84
NB		 3098 struct qla_tgt_sess *sess = cmd->sess;
3099
f83adb61
QT		 3100 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3101 "%s: se_cmd[%p] ox_id %04x\n",
3102 __func__, &cmd->se_cmd,
3103 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3104
e07f8f65
SK		 3105 BUG_ON(cmd->cmd_in_wq);
3106
33e79977
QT		 3107 if (!cmd->q_full)
3108 qlt_decr_num_pend_cmds(cmd->vha);
3109
f83adb61 3110 BUG_ON(cmd->sg_mapped);
e07f8f65 3111 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3112 if (unlikely(cmd->free_sg))
3113 kfree(cmd->sg);
51a07f84
NB		 3114
3115 if (!sess || !sess->se_sess) {
3116 WARN_ON(1);
3117 return;
3118 }
e07f8f65 3119 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3120 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3121}
3122EXPORT_SYMBOL(qlt_free_cmd);
3123
3124/* ha->hardware_lock supposed to be held on entry */
3125static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
3126 struct qla_tgt_cmd *cmd, void *ctio)
3127{
3128 struct qla_tgt_srr_ctio *sc;
0e8cd71c 3129 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3130 struct qla_tgt_srr_imm *imm;
3131
3132 tgt->ctio_srr_id++;
e07f8f65 3133 cmd->cmd_flags |= BIT_15;
2d70c103
NB		 3134
3135 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
3136 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
3137
3138 if (!ctio) {
3139 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
3140 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
3141 vha->vp_idx);
3142 return -EINVAL;
3143 }
3144
3145 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
3146 if (sc != NULL) {
3147 sc->cmd = cmd;
3148 /* IRQ is already OFF */
3149 spin_lock(&tgt->srr_lock);
3150 sc->srr_id = tgt->ctio_srr_id;
3151 list_add_tail(&sc->srr_list_entry,
3152 &tgt->srr_ctio_list);
3153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
3154 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
3155 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3156 int found = 0;
3157 list_for_each_entry(imm, &tgt->srr_imm_list,
3158 srr_list_entry) {
3159 if (imm->srr_id == sc->srr_id) {
3160 found = 1;
3161 break;
3162 }
3163 }
3164 if (found) {
3165 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
3166 "Scheduling srr work\n");
3167 schedule_work(&tgt->srr_work);
3168 } else {
3169 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
3170 "qla_target(%d): imm_srr_id "
3171 "== ctio_srr_id (%d), but there is no "
3172 "corresponding SRR IMM, deleting CTIO "
3173 "SRR %p\n", vha->vp_idx,
3174 tgt->ctio_srr_id, sc);
3175 list_del(&sc->srr_list_entry);
3176 spin_unlock(&tgt->srr_lock);
3177
3178 kfree(sc);
3179 return -EINVAL;
3180 }
3181 }
3182 spin_unlock(&tgt->srr_lock);
3183 } else {
3184 struct qla_tgt_srr_imm *ti;
3185
3186 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
3187 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
3188 vha->vp_idx);
3189 spin_lock(&tgt->srr_lock);
3190 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
3191 srr_list_entry) {
3192 if (imm->srr_id == tgt->ctio_srr_id) {
3193 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
3194 "IMM SRR %p deleted (id %d)\n",
3195 imm, imm->srr_id);
3196 list_del(&imm->srr_list_entry);
3197 qlt_reject_free_srr_imm(vha, imm, 1);
3198 }
3199 }
3200 spin_unlock(&tgt->srr_lock);
3201
3202 return -ENOMEM;
3203 }
3204
3205 return 0;
3206}
3207
3208/*
3209 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3210 */
3211static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
3212 struct qla_tgt_cmd *cmd, uint32_t status)
3213{
3214 int term = 0;
3215
3216 if (ctio != NULL) {
3217 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3218 term = !(c->flags &
ad950360 3219 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3220 } else
3221 term = 1;
3222
3223 if (term)
3224 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3225
3226 return term;
3227}
3228
3229/* ha->hardware_lock supposed to be held on entry */
3230static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
3231 uint32_t handle)
3232{
3233 struct qla_hw_data *ha = vha->hw;
3234
3235 handle--;
3236 if (ha->tgt.cmds[handle] != NULL) {
3237 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
3238 ha->tgt.cmds[handle] = NULL;
3239 return cmd;
3240 } else
3241 return NULL;
3242}
3243
3244/* ha->hardware_lock supposed to be held on entry */
3245static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3246 uint32_t handle, void *ctio)
3247{
3248 struct qla_tgt_cmd *cmd = NULL;
3249
3250 /* Clear out internal marks */
3251 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
3252 CTIO_INTERMEDIATE_HANDLE_MARK);
3253
3254 if (handle != QLA_TGT_NULL_HANDLE) {
667024a3 3255 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
2d70c103 3256 return NULL;
667024a3 3257
2d70c103 3258 /* handle-1 is actually used */
8d93f550 3259 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 3260 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3261 "qla_target(%d): Wrong handle %x received\n",
3262 vha->vp_idx, handle);
3263 return NULL;
3264 }
3265 cmd = qlt_get_cmd(vha, handle);
3266 if (unlikely(cmd == NULL)) {
3267 ql_dbg(ql_dbg_tgt, vha, 0xe053,
3268 "qla_target(%d): Suspicious: unable to "
3269 "find the command with handle %x\n", vha->vp_idx,
3270 handle);
3271 return NULL;
3272 }
3273 } else if (ctio != NULL) {
3274 /* We can't get loop ID from CTIO7 */
3275 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3276 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3277 "support NULL handles\n", vha->vp_idx);
3278 return NULL;
3279 }
3280
3281 return cmd;
3282}
3283
c0cb4496
AE		 3284/* hardware_lock should be held by caller. */
3285static void
3286qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3287{
3288 struct qla_hw_data *ha = vha->hw;
3289 uint32_t handle;
3290
3291 if (cmd->sg_mapped)
3292 qlt_unmap_sg(vha, cmd);
3293
3294 handle = qlt_make_handle(vha);
3295
3296 /* TODO: fix debug message type and ids. */
3297 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3298 ql_dbg(ql_dbg_io, vha, 0xff00,
3299 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
3300 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3301 cmd->write_data_transferred = 0;
3302 cmd->state = QLA_TGT_STATE_DATA_IN;
3303
3304 ql_dbg(ql_dbg_io, vha, 0xff01,
3305 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
3306
3307 ha->tgt.tgt_ops->handle_data(cmd);
3308 return;
3309 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
3310 ql_dbg(ql_dbg_io, vha, 0xff02,
3311 "HOST-ABORT: handle=%d, state=ABORTED.\n", handle);
3312 } else {
3313 ql_dbg(ql_dbg_io, vha, 0xff03,
3314 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
3315 cmd->state);
3316 dump_stack();
3317 }
3318
e5fdee87 3319 cmd->cmd_flags |= BIT_17;
c0cb4496
AE		 3320 ha->tgt.tgt_ops->free_cmd(cmd);
3321}
3322
3323void
3324qlt_host_reset_handler(struct qla_hw_data *ha)
3325{
3326 struct qla_tgt_cmd *cmd;
3327 unsigned long flags;
3328 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
3329 scsi_qla_host_t *vha = NULL;
3330 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
3331 uint32_t i;
3332
3333 if (!base_vha->hw->tgt.tgt_ops)
3334 return;
3335
3336 if (!tgt || qla_ini_mode_enabled(base_vha)) {
3337 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
3338 "Target mode disabled\n");
3339 return;
3340 }
3341
3342 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
3343 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
3344 base_vha->dpc_flags);
3345
3346 spin_lock_irqsave(&ha->hardware_lock, flags);
3347 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
3348 cmd = qlt_get_cmd(base_vha, i);
3349 if (!cmd)
3350 continue;
3351 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
3352 vha = cmd->vha;
3353 qlt_abort_cmd_on_host_reset(vha, cmd);
3354 }
3355 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3356}
3357
3358
2d70c103
NB		 3359/*
3360 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3361 */
3362static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
3363 uint32_t status, void *ctio)
3364{
3365 struct qla_hw_data *ha = vha->hw;
3366 struct se_cmd *se_cmd;
2d70c103
NB		 3367 struct qla_tgt_cmd *cmd;
3368
2d70c103
NB		 3369 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3370 /* That could happen only in case of an error/reset/abort */
3371 if (status != CTIO_SUCCESS) {
3372 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3373 "Intermediate CTIO received"
3374 " (status %x)\n", status);
3375 }
3376 return;
3377 }
3378
3379 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 3380 if (cmd == NULL)
2d70c103 3381 return;
092e1dc3 3382
2d70c103 3383 se_cmd = &cmd->se_cmd;
d564a372 3384 cmd->cmd_sent_to_fw = 0;
2d70c103 3385
f9b6721a 3386 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3387
3388 if (unlikely(status != CTIO_SUCCESS)) {
3389 switch (status & 0xFFFF) {
3390 case CTIO_LIP_RESET:
3391 case CTIO_TARGET_RESET:
3392 case CTIO_ABORTED:
7b898542 3393 /* driver request abort via Terminate exchange */
2d70c103
NB		 3394 case CTIO_TIMEOUT:
3395 case CTIO_INVALID_RX_ID:
3396 /* They are OK */
3397 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3398 "qla_target(%d): CTIO with "
3399 "status %#x received, state %x, se_cmd %p, "
3400 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3401 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3402 status, cmd->state, se_cmd);
3403 break;
3404
3405 case CTIO_PORT_LOGGED_OUT:
3406 case CTIO_PORT_UNAVAILABLE:
3407 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3408 "qla_target(%d): CTIO with PORT LOGGED "
3409 "OUT (29) or PORT UNAVAILABLE (28) status %x "
3410 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3411 status, cmd->state, se_cmd);
3412 break;
3413
3414 case CTIO_SRR_RECEIVED:
3415 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
3416 "qla_target(%d): CTIO with SRR_RECEIVED"
3417 " status %x received (state %x, se_cmd %p)\n",
3418 vha->vp_idx, status, cmd->state, se_cmd);
3419 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
3420 break;
3421 else
3422 return;
3423
f83adb61
QT		 3424 case CTIO_DIF_ERROR: {
3425 struct ctio_crc_from_fw *crc =
3426 (struct ctio_crc_from_fw *)ctio;
3427 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3428 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
3429 vha->vp_idx, status, cmd->state, se_cmd,
3430 *((u64 *)&crc->actual_dif[0]),
3431 *((u64 *)&crc->expected_dif[0]));
3432
3433 if (qlt_handle_dif_error(vha, cmd, ctio)) {
3434 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3435 /* scsi Write/xfer rdy complete */
3436 goto skip_term;
3437 } else {
3438 /* scsi read/xmit respond complete
3439 * call handle dif to send scsi status
3440 * rather than terminate exchange.
3441 */
3442 cmd->state = QLA_TGT_STATE_PROCESSED;
3443 ha->tgt.tgt_ops->handle_dif_err(cmd);
3444 return;
3445 }
3446 } else {
3447 /* Need to generate a SCSI good completion.
3448 * because FW did not send scsi status.
3449 */
3450 status = 0;
3451 goto skip_term;
3452 }
3453 break;
3454 }
2d70c103
NB		 3455 default:
3456 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3457 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3458 vha->vp_idx, status, cmd->state, se_cmd);
3459 break;
3460 }
3461
7b898542
QT		 3462
3463 /* "cmd->state == QLA_TGT_STATE_ABORTED" means
3464 * cmd is already aborted/terminated, we don't
3465 * need to terminate again. The exchange is already
3466 * cleaned up/freed at FW level. Just cleanup at driver
3467 * level.
3468 */
3469 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
33e79977 3470 (cmd->state != QLA_TGT_STATE_ABORTED)) {
e07f8f65 3471 cmd->cmd_flags |= BIT_13;
2d70c103
NB		 3472 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3473 return;
7b898542 3474 }
2d70c103 3475 }
f83adb61 3476skip_term:
2d70c103
NB		 3477
3478 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
e5fdee87 3479 cmd->cmd_flags |= BIT_12;
2d70c103 3480 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3481 cmd->state = QLA_TGT_STATE_DATA_IN;
3482
52c82823 3483 if (status == CTIO_SUCCESS)
2d70c103
NB		 3484 cmd->write_data_transferred = 1;
3485
2d70c103
NB		 3486 ha->tgt.tgt_ops->handle_data(cmd);
3487 return;
3488 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
e5fdee87 3489 cmd->cmd_flags |= BIT_18;
2d70c103 3490 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3491 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3492 } else {
e5fdee87 3493 cmd->cmd_flags |= BIT_19;
2d70c103
NB		 3494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3495 "qla_target(%d): A command in state (%d) should "
3496 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3497 }
3498
7b898542
QT		 3499 if (unlikely(status != CTIO_SUCCESS) &&
3500 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3501 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3502 dump_stack();
3503 }
3504
3505 ha->tgt.tgt_ops->free_cmd(cmd);
3506}
3507
2d70c103
NB		 3508static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3509 uint8_t task_codes)
3510{
3511 int fcp_task_attr;
3512
3513 switch (task_codes) {
3514 case ATIO_SIMPLE_QUEUE:
68d81f40 3515 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3516 break;
3517 case ATIO_HEAD_OF_QUEUE:
68d81f40 3518 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3519 break;
3520 case ATIO_ORDERED_QUEUE:
68d81f40 3521 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3522 break;
3523 case ATIO_ACA_QUEUE:
68d81f40 3524 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3525 break;
3526 case ATIO_UNTAGGED:
68d81f40 3527 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3528 break;
3529 default:
3530 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3531 "qla_target: unknown task code %x, use ORDERED instead\n",
3532 task_codes);
68d81f40 3533 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3534 break;
3535 }
3536
3537 return fcp_task_attr;
3538}
3539
3540static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3541 uint8_t *);
3542/*
3543 * Process context for I/O path into tcm_qla2xxx code
3544 */
51a07f84 3545static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3546{
2d70c103
NB		 3547 scsi_qla_host_t *vha = cmd->vha;
3548 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3549 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3550 struct qla_tgt_sess *sess = cmd->sess;
2d70c103
NB		 3551 struct atio_from_isp *atio = &cmd->atio;
3552 unsigned char *cdb;
3553 unsigned long flags;
3554 uint32_t data_length;
3555 int ret, fcp_task_attr, data_dir, bidi = 0;
3556
e07f8f65
SK		 3557 cmd->cmd_in_wq = 0;
3558 cmd->cmd_flags |= BIT_1;
2d70c103
NB		 3559 if (tgt->tgt_stop)
3560 goto out_term;
3561
8b2f5ff3
SN		 3562 if (cmd->state == QLA_TGT_STATE_ABORTED) {
3563 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
3564 "cmd with tag %u is aborted\n",
3565 cmd->atio.u.isp24.exchange_addr);
3566 goto out_term;
3567 }
3568
2d70c103 3569 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 3570 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 3571 cmd->unpacked_lun = scsilun_to_int(
3572 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3573
3574 if (atio->u.isp24.fcp_cmnd.rddata &&
3575 atio->u.isp24.fcp_cmnd.wrdata) {
3576 bidi = 1;
3577 data_dir = DMA_TO_DEVICE;
3578 } else if (atio->u.isp24.fcp_cmnd.rddata)
3579 data_dir = DMA_FROM_DEVICE;
3580 else if (atio->u.isp24.fcp_cmnd.wrdata)
3581 data_dir = DMA_TO_DEVICE;
3582 else
3583 data_dir = DMA_NONE;
3584
3585 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3586 atio->u.isp24.fcp_cmnd.task_attr);
3587 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3588 &atio->u.isp24.fcp_cmnd.add_cdb[
3589 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3590
51a07f84
NB		 3591 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3592 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 3593 if (ret != 0)
3594 goto out_term;
3595 /*
3596 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3597 */
08234e3a 3598 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 3599 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 3600 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 3601 return;
3602
3603out_term:
667024a3 3604 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 3605 /*
fae9eaf8
RD		 3606 * cmd has not sent to target yet, so pass NULL as the second
3607 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 3608 */
e07f8f65 3609 cmd->cmd_flags |= BIT_2;
2d70c103
NB		 3610 spin_lock_irqsave(&ha->hardware_lock, flags);
3611 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
33e79977
QT		 3612
3613 qlt_decr_num_pend_cmds(vha);
51a07f84
NB		 3614 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3615 ha->tgt.tgt_ops->put_sess(sess);
3616 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3617}
3618
3619static void qlt_do_work(struct work_struct *work)
3620{
3621 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 3622 scsi_qla_host_t *vha = cmd->vha;
3623 unsigned long flags;
3624
3625 spin_lock_irqsave(&vha->cmd_list_lock, flags);
3626 list_del(&cmd->cmd_list);
3627 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 3628
3629 __qlt_do_work(cmd);
3630}
3631
3632static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
3633 struct qla_tgt_sess *sess,
3634 struct atio_from_isp *atio)
3635{
3636 struct se_session *se_sess = sess->se_sess;
3637 struct qla_tgt_cmd *cmd;
3638 int tag;
3639
3640 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3641 if (tag < 0)
3642 return NULL;
3643
3644 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3645 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3646
3647 memcpy(&cmd->atio, atio, sizeof(*atio));
3648 cmd->state = QLA_TGT_STATE_NEW;
3649 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 3650 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 3651 cmd->vha = vha;
3652 cmd->se_cmd.map_tag = tag;
3653 cmd->sess = sess;
3654 cmd->loop_id = sess->loop_id;
3655 cmd->conf_compl_supported = sess->conf_compl_supported;
3656
9fce1254
KS		 3657 cmd->cmd_flags = 0;
3658 cmd->jiffies_at_alloc = get_jiffies_64();
3659
3660 cmd->reset_count = vha->hw->chip_reset;
3661
51a07f84
NB		 3662 return cmd;
3663}
3664
3665static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
3666 uint16_t);
3667
3668static void qlt_create_sess_from_atio(struct work_struct *work)
3669{
3670 struct qla_tgt_sess_op *op = container_of(work,
3671 struct qla_tgt_sess_op, work);
3672 scsi_qla_host_t *vha = op->vha;
3673 struct qla_hw_data *ha = vha->hw;
3674 struct qla_tgt_sess *sess;
3675 struct qla_tgt_cmd *cmd;
3676 unsigned long flags;
3677 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
3678
8b2f5ff3
SN		 3679 spin_lock_irqsave(&vha->cmd_list_lock, flags);
3680 list_del(&op->cmd_list);
3681 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
3682
3683 if (op->aborted) {
3684 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
3685 "sess_op with tag %u is aborted\n",
3686 op->atio.u.isp24.exchange_addr);
3687 goto out_term;
3688 }
3689
51a07f84 3690 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
8b2f5ff3
SN		 3691 "qla_target(%d): Unable to find wwn login"
3692 " (s_id %x:%x:%x), trying to create it manually\n",
3693 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
51a07f84
NB		 3694
3695 if (op->atio.u.raw.entry_count > 1) {
3696 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
8b2f5ff3 3697 "Dropping multy entry atio %p\n", &op->atio);
51a07f84
NB		 3698 goto out_term;
3699 }
3700
3701 mutex_lock(&vha->vha_tgt.tgt_mutex);
3702 sess = qlt_make_local_sess(vha, s_id);
3703 /* sess has an extra creation ref. */
3704 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3705
3706 if (!sess)
3707 goto out_term;
3708 /*
3709 * Now obtain a pre-allocated session tag using the original op->atio
3710 * packet header, and dispatch into __qlt_do_work() using the existing
3711 * process context.
3712 */
3713 cmd = qlt_get_tag(vha, sess, &op->atio);
3714 if (!cmd) {
3715 spin_lock_irqsave(&ha->hardware_lock, flags);
3716 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
2d70c103 3717 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 3718 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3719 kfree(op);
3720 return;
3721 }
3722 /*
3723 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release
3724 * the extra reference taken above by qlt_make_local_sess()
3725 */
3726 __qlt_do_work(cmd);
3727 kfree(op);
3728 return;
3729
3730out_term:
3731 spin_lock_irqsave(&ha->hardware_lock, flags);
3732 qlt_send_term_exchange(vha, NULL, &op->atio, 1);
08234e3a 3733 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84
NB		 3734 kfree(op);
3735
2d70c103
NB		 3736}
3737
3738/* ha->hardware_lock supposed to be held on entry */
3739static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3740 struct atio_from_isp *atio)
3741{
51a07f84 3742 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3743 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3744 struct qla_tgt_sess *sess;
2d70c103
NB		 3745 struct qla_tgt_cmd *cmd;
3746
3747 if (unlikely(tgt->tgt_stop)) {
667024a3 3748 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 3749 "New command while device %p is shutting down\n", tgt);
3750 return -EFAULT;
3751 }
3752
51a07f84
NB		 3753 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
3754 if (unlikely(!sess)) {
3755 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
3756 GFP_ATOMIC);
3757 if (!op)
3758 return -ENOMEM;
3759
3760 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 3761 op->vha = vha;
8b2f5ff3
SN		 3762
3763 spin_lock(&vha->cmd_list_lock);
3764 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
3765 spin_unlock(&vha->cmd_list_lock);
3766
51a07f84
NB		 3767 INIT_WORK(&op->work, qlt_create_sess_from_atio);
3768 queue_work(qla_tgt_wq, &op->work);
3769 return 0;
3770 }
e52a8b45
AP		 3771
3772 /* Another WWN used to have our s_id. Our PLOGI scheduled its
3773 * session deletion, but it's still in sess_del_work wq */
3774 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
3775 ql_dbg(ql_dbg_io, vha, 0x3061,
3776 "New command while old session %p is being deleted\n",
3777 sess);
3778 return -EFAULT;
3779 }
3780
51a07f84
NB		 3781 /*
3782 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
3783 */
3784 kref_get(&sess->se_sess->sess_kref);
3785
3786 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 3787 if (!cmd) {
667024a3 3788 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 3789 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
51a07f84 3790 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 3791 return -ENOMEM;
3792 }
3793
e07f8f65
SK		 3794 cmd->cmd_in_wq = 1;
3795 cmd->cmd_flags |= BIT_0;
8b2f5ff3
SN		 3796
3797 spin_lock(&vha->cmd_list_lock);
3798 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
3799 spin_unlock(&vha->cmd_list_lock);
3800
2d70c103
NB		 3801 INIT_WORK(&cmd->work, qlt_do_work);
3802 queue_work(qla_tgt_wq, &cmd->work);
3803 return 0;
3804
3805}
3806
3807/* ha->hardware_lock supposed to be held on entry */
3808static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
3809 int fn, void *iocb, int flags)
3810{
3811 struct scsi_qla_host *vha = sess->vha;
3812 struct qla_hw_data *ha = vha->hw;
3813 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 3814 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103
NB		 3815 int res;
3816 uint8_t tmr_func;
3817
3818 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3819 if (!mcmd) {
3820 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
3821 "qla_target(%d): Allocation of management "
3822 "command failed, some commands and their data could "
3823 "leak\n", vha->vp_idx);
3824 return -ENOMEM;
3825 }
3826 memset(mcmd, 0, sizeof(*mcmd));
3827 mcmd->sess = sess;
3828
3829 if (iocb) {
3830 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3831 sizeof(mcmd->orig_iocb.imm_ntfy));
3832 }
3833 mcmd->tmr_func = fn;
3834 mcmd->flags = flags;
b6a029e1 3835 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 3836
3837 switch (fn) {
3838 case QLA_TGT_CLEAR_ACA:
3839 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
3840 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
3841 tmr_func = TMR_CLEAR_ACA;
3842 break;
3843
3844 case QLA_TGT_TARGET_RESET:
3845 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
3846 "qla_target(%d): TARGET_RESET received\n",
3847 sess->vha->vp_idx);
3848 tmr_func = TMR_TARGET_WARM_RESET;
3849 break;
3850
3851 case QLA_TGT_LUN_RESET:
3852 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
3853 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
3854 tmr_func = TMR_LUN_RESET;
8b2f5ff3 3855 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
2d70c103
NB		 3856 break;
3857
3858 case QLA_TGT_CLEAR_TS:
3859 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
3860 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
3861 tmr_func = TMR_CLEAR_TASK_SET;
3862 break;
3863
3864 case QLA_TGT_ABORT_TS:
3865 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
3866 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
3867 tmr_func = TMR_ABORT_TASK_SET;
3868 break;
3869#if 0
3870 case QLA_TGT_ABORT_ALL:
3871 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
3872 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
3873 sess->vha->vp_idx);
3874 tmr_func = 0;
3875 break;
3876
3877 case QLA_TGT_ABORT_ALL_SESS:
3878 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
3879 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
3880 sess->vha->vp_idx);
3881 tmr_func = 0;
3882 break;
3883
3884 case QLA_TGT_NEXUS_LOSS_SESS:
3885 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
3886 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
3887 sess->vha->vp_idx);
3888 tmr_func = 0;
3889 break;
3890
3891 case QLA_TGT_NEXUS_LOSS:
3892 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
3893 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
3894 tmr_func = 0;
3895 break;
3896#endif
3897 default:
3898 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
3899 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
3900 sess->vha->vp_idx, fn);
3901 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3902 return -ENOSYS;
3903 }
3904
3905 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
3906 if (res != 0) {
3907 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
3908 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
3909 sess->vha->vp_idx, res);
3910 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3911 return -EFAULT;
3912 }
3913
3914 return 0;
3915}
3916
3917/* ha->hardware_lock supposed to be held on entry */
3918static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
3919{
3920 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3921 struct qla_hw_data *ha = vha->hw;
3922 struct qla_tgt *tgt;
3923 struct qla_tgt_sess *sess;
3924 uint32_t lun, unpacked_lun;
52c82823 3925 int fn;
2d70c103 3926
0e8cd71c 3927 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3928
3929 lun = a->u.isp24.fcp_cmnd.lun;
2d70c103
NB		 3930 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
3931 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3932 a->u.isp24.fcp_hdr.s_id);
3933 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3934
3935 if (!sess) {
3936 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
3937 "qla_target(%d): task mgmt fn 0x%x for "
3938 "non-existant session\n", vha->vp_idx, fn);
3939 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
3940 sizeof(struct atio_from_isp));
3941 }
3942
e52a8b45
AP		 3943 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)
3944 return -EFAULT;
3945
2d70c103
NB		 3946 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
3947}
3948
3949/* ha->hardware_lock supposed to be held on entry */
3950static int __qlt_abort_task(struct scsi_qla_host *vha,
3951 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
3952{
3953 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3954 struct qla_hw_data *ha = vha->hw;
3955 struct qla_tgt_mgmt_cmd *mcmd;
3956 uint32_t lun, unpacked_lun;
3957 int rc;
3958
3959 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3960 if (mcmd == NULL) {
3961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
3962 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
3963 vha->vp_idx, __func__);
3964 return -ENOMEM;
3965 }
3966 memset(mcmd, 0, sizeof(*mcmd));
3967
3968 mcmd->sess = sess;
3969 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3970 sizeof(mcmd->orig_iocb.imm_ntfy));
3971
3972 lun = a->u.isp24.fcp_cmnd.lun;
3973 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
80187f8e 3974 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 3975
3976 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
3977 le16_to_cpu(iocb->u.isp2x.seq_id));
3978 if (rc != 0) {
3979 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
3980 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
3981 vha->vp_idx, rc);
3982 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3983 return -EFAULT;
3984 }
3985
3986 return 0;
3987}
3988
3989/* ha->hardware_lock supposed to be held on entry */
3990static int qlt_abort_task(struct scsi_qla_host *vha,
3991 struct imm_ntfy_from_isp *iocb)
3992{
3993 struct qla_hw_data *ha = vha->hw;
3994 struct qla_tgt_sess *sess;
3995 int loop_id;
3996
3997 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
3998
3999 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
4000 if (sess == NULL) {
4001 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4002 "qla_target(%d): task abort for unexisting "
4003 "session\n", vha->vp_idx);
0e8cd71c 4004 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4005 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4006 }
4007
4008 return __qlt_abort_task(vha, iocb, sess);
4009}
4010
a6ca8878
AP		 4011void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4012{
4013 if (fcport->tgt_session) {
4014 if (rc != MBS_COMMAND_COMPLETE) {
df673274 4015 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
a6ca8878
AP		 4016 "%s: se_sess %p / sess %p from"
4017 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4018 " LOGO failed: %#x\n",
4019 __func__,
4020 fcport->tgt_session->se_sess,
4021 fcport->tgt_session,
4022 fcport->port_name, fcport->loop_id,
4023 fcport->d_id.b.domain, fcport->d_id.b.area,
4024 fcport->d_id.b.al_pa, rc);
4025 }
4026
4027 fcport->tgt_session->logout_completed = 1;
4028 }
4029}
4030
4031static void qlt_swap_imm_ntfy_iocb(struct imm_ntfy_from_isp *a,
4032 struct imm_ntfy_from_isp *b)
4033{
4034 struct imm_ntfy_from_isp tmp;
4035 memcpy(&tmp, a, sizeof(struct imm_ntfy_from_isp));
4036 memcpy(a, b, sizeof(struct imm_ntfy_from_isp));
4037 memcpy(b, &tmp, sizeof(struct imm_ntfy_from_isp));
4038}
4039
4040/*
4041* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4042*
4043* Schedules sessions with matching port_id/loop_id but different wwn for
4044* deletion. Returns existing session with matching wwn if present.
4045* Null otherwise.
4046*/
4047static struct qla_tgt_sess *
4048qlt_find_sess_invalidate_other(struct qla_tgt *tgt, uint64_t wwn,
4049 port_id_t port_id, uint16_t loop_id)
4050{
4051 struct qla_tgt_sess *sess = NULL, *other_sess;
4052 uint64_t other_wwn;
4053
4054 list_for_each_entry(other_sess, &tgt->sess_list, sess_list_entry) {
4055
4056 other_wwn = wwn_to_u64(other_sess->port_name);
4057
4058 if (wwn == other_wwn) {
4059 WARN_ON(sess);
4060 sess = other_sess;
4061 continue;
4062 }
4063
4064 /* find other sess with nport_id collision */
4065 if (port_id.b24 == other_sess->s_id.b24) {
4066 if (loop_id != other_sess->loop_id) {
4067 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000c,
4068 "Invalidating sess %p loop_id %d wwn %llx.\n",
4069 other_sess, other_sess->loop_id, other_wwn);
4070
4071 /*
4072 * logout_on_delete is set by default, but another
4073 * session that has the same s_id/loop_id combo
4074 * might have cleared it when requested this session
4075 * deletion, so don't touch it
4076 */
4077 qlt_schedule_sess_for_deletion(other_sess, true);
4078 } else {
4079 /*
4080 * Another wwn used to have our s_id/loop_id
4081 * combo - kill the session, but don't log out
4082 */
4083 sess->logout_on_delete = 0;
4084 qlt_schedule_sess_for_deletion(other_sess,
4085 true);
4086 }
4087 continue;
4088 }
4089
4090 /* find other sess with nport handle collision */
4091 if (loop_id == other_sess->loop_id) {
4092 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000d,
4093 "Invalidating sess %p loop_id %d wwn %llx.\n",
4094 other_sess, other_sess->loop_id, other_wwn);
4095
4096 /* Same loop_id but different s_id
4097 * Ok to kill and logout */
4098 qlt_schedule_sess_for_deletion(other_sess, true);
4099 }
4100 }
4101
4102 return sess;
4103}
4104
daddf5cf
AP		 4105/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4106static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4107{
4108 struct qla_tgt_sess_op *op;
4109 struct qla_tgt_cmd *cmd;
4110 uint32_t key;
4111 int count = 0;
4112
4113 key = (((u32)s_id->b.domain << 16) |
4114 ((u32)s_id->b.area << 8) |
4115 ((u32)s_id->b.al_pa));
4116
4117 spin_lock(&vha->cmd_list_lock);
4118 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4119 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4120 if (op_key == key) {
4121 op->aborted = true;
4122 count++;
4123 }
4124 }
4125 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4126 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4127 if (cmd_key == key) {
4128 cmd->state = QLA_TGT_STATE_ABORTED;
4129 count++;
4130 }
4131 }
4132 spin_unlock(&vha->cmd_list_lock);
4133
4134 return count;
4135}
4136
2d70c103
NB		 4137/*
4138 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4139 */
4140static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4141 struct imm_ntfy_from_isp *iocb)
4142{
a6ca8878 4143 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4144 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 4145 struct qla_tgt_sess *sess = NULL;
4146 uint64_t wwn;
4147 port_id_t port_id;
4148 uint16_t loop_id;
4149 uint16_t wd3_lo;
2d70c103
NB		 4150 int res = 0;
4151
a6ca8878
AP		 4152 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4153
4154 port_id.b.domain = iocb->u.isp24.port_id[2];
4155 port_id.b.area = iocb->u.isp24.port_id[1];
4156 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4157 port_id.b.rsvd_1 = 0;
4158
4159 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4160
2d70c103 4161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
7b833558
OK		 4162 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
4163 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2d70c103 4164
a6ca8878
AP		 4165 /* res = 1 means ack at the end of thread
4166 * res = 0 means ack async/later.
4167 */
2d70c103
NB		 4168 switch (iocb->u.isp24.status_subcode) {
4169 case ELS_PLOGI:
a6ca8878 4170
daddf5cf
AP		 4171 /* Mark all stale commands in qla_tgt_wq for deletion */
4172 abort_cmds_for_s_id(vha, &port_id);
4173
a6ca8878
AP		 4174 if (wwn)
4175 sess = qlt_find_sess_invalidate_other(tgt, wwn,
4176 port_id, loop_id);
4177
4178 if (!sess || IS_SW_RESV_ADDR(sess->s_id)) {
4179 res = 1;
4180 break;
4181 }
4182
4183 if (sess->plogi_ack_needed) {
4184 /*
4185 * Initiator sent another PLOGI before last PLOGI could
4186 * finish. Swap plogi iocbs and terminate old one
4187 * without acking, new one will get acked when session
4188 * deletion completes.
4189 */
df673274 4190 ql_log(ql_log_warn, sess->vha, 0xf094,
a6ca8878
AP		 4191 "sess %p received double plogi.\n", sess);
4192
4193 qlt_swap_imm_ntfy_iocb(iocb, &sess->tm_iocb);
4194
4195 qlt_send_term_imm_notif(vha, iocb, 1);
4196
4197 res = 0;
4198 break;
4199 }
4200
4201 res = 0;
4202
4203 /*
4204 * Save immediate Notif IOCB for Ack when sess is done
4205 * and being deleted.
4206 */
4207 memcpy(&sess->tm_iocb, iocb, sizeof(sess->tm_iocb));
4208 sess->plogi_ack_needed = 1;
4209
4210 /*
4211 * Under normal circumstances we want to release nport handle
4212 * during LOGO process to avoid nport handle leaks inside FW.
4213 * The exception is when LOGO is done while another PLOGI with
4214 * the same nport handle is waiting as might be the case here.
4215 * Note: there is always a possibily of a race where session
4216 * deletion has already started for other reasons (e.g. ACL
4217 * removal) and now PLOGI arrives:
4218 * 1. if PLOGI arrived in FW after nport handle has been freed,
4219 * FW must have assigned this PLOGI a new/same handle and we
4220 * can proceed ACK'ing it as usual when session deletion
4221 * completes.
4222 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4223 * bit reached it, the handle has now been released. We'll
4224 * get an error when we ACK this PLOGI. Nothing will be sent
4225 * back to initiator. Initiator should eventually retry
4226 * PLOGI and situation will correct itself.
4227 */
4228 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4229 (sess->s_id.b24 == port_id.b24));
4230 qlt_schedule_sess_for_deletion(sess, true);
4231 break;
4232
2d70c103 4233 case ELS_PRLI:
a6ca8878
AP		 4234 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4235
4236 if (wwn)
4237 sess = qlt_find_sess_invalidate_other(tgt, wwn, port_id,
4238 loop_id);
4239
4240 if (sess != NULL) {
4241 if (sess->deleted) {
4242 /*
4243 * Impatient initiator sent PRLI before last
4244 * PLOGI could finish. Will force him to re-try,
4245 * while last one finishes.
4246 */
df673274 4247 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4248 "sess %p PRLI received, before plogi ack.\n",
4249 sess);
4250 qlt_send_term_imm_notif(vha, iocb, 1);
4251 res = 0;
4252 break;
4253 }
4254
4255 /*
4256 * This shouldn't happen under normal circumstances,
4257 * since we have deleted the old session during PLOGI
4258 */
df673274 4259 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4260 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4261 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4262
4263 sess->local = 0;
4264 sess->loop_id = loop_id;
4265 sess->s_id = port_id;
4266
4267 if (wd3_lo & BIT_7)
4268 sess->conf_compl_supported = 1;
4269
df673274
AP		 4270 }
4271 res = 1; /* send notify ack */
4272
4273 /* Make session global (not used in fabric mode) */
4274 if (ha->current_topology != ISP_CFG_F) {
4275 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4276 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4277 qla2xxx_wake_dpc(vha);
a6ca8878
AP		 4278 } else {
4279 /* todo: else - create sess here. */
4280 res = 1; /* send notify ack */
4281 }
4282
4283 break;
4284
2d70c103
NB		 4285 case ELS_LOGO:
4286 case ELS_PRLO:
4287 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4288 break;
4289 case ELS_PDISC:
4290 case ELS_ADISC:
4291 {
0e8cd71c 4292 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4293 if (tgt->link_reinit_iocb_pending) {
4294 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4295 0, 0, 0, 0, 0, 0);
4296 tgt->link_reinit_iocb_pending = 0;
4297 }
4298 res = 1; /* send notify ack */
4299 break;
4300 }
4301
a6ca8878 4302 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4303 default:
4304 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4305 "qla_target(%d): Unsupported ELS command %x "
4306 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4307 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4308 break;
4309 }
4310
4311 return res;
4312}
4313
4314static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
4315{
5897cb2f
BVA		 4316#if 1
4317 /*
4318 * FIXME: Reject non zero SRR relative offset until we can test
4319 * this code properly.
4320 */
4321 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
4322 return -1;
4323#else
2d70c103
NB		 4324 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
4325 size_t first_offset = 0, rem_offset = offset, tmp = 0;
4326 int i, sg_srr_cnt, bufflen = 0;
4327
4328 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
4329 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
4330 "cmd->sg_cnt: %u, direction: %d\n",
4331 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
4332
2d70c103
NB		 4333 if (!cmd->sg || !cmd->sg_cnt) {
4334 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
4335 "Missing cmd->sg or zero cmd->sg_cnt in"
4336 " qla_tgt_set_data_offset\n");
4337 return -EINVAL;
4338 }
4339 /*
4340 * Walk the current cmd->sg list until we locate the new sg_srr_start
4341 */
4342 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
4343 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
4344 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
4345 i, sg, sg_page(sg), sg->length, sg->offset);
4346
4347 if ((sg->length + tmp) > offset) {
4348 first_offset = rem_offset;
4349 sg_srr_start = sg;
4350 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
4351 "Found matching sg[%d], using %p as sg_srr_start, "
4352 "and using first_offset: %zu\n", i, sg,
4353 first_offset);
4354 break;
4355 }
4356 tmp += sg->length;
4357 rem_offset -= sg->length;
4358 }
4359
4360 if (!sg_srr_start) {
4361 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
4362 "Unable to locate sg_srr_start for offset: %u\n", offset);
4363 return -EINVAL;
4364 }
4365 sg_srr_cnt = (cmd->sg_cnt - i);
4366
4367 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
4368 if (!sg_srr) {
4369 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
4370 "Unable to allocate sgp\n");
4371 return -ENOMEM;
4372 }
4373 sg_init_table(sg_srr, sg_srr_cnt);
4374 sgp = &sg_srr[0];
4375 /*
4376 * Walk the remaining list for sg_srr_start, mapping to the newly
4377 * allocated sg_srr taking first_offset into account.
4378 */
4379 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
4380 if (first_offset) {
4381 sg_set_page(sgp, sg_page(sg),
4382 (sg->length - first_offset), first_offset);
4383 first_offset = 0;
4384 } else {
4385 sg_set_page(sgp, sg_page(sg), sg->length, 0);
4386 }
4387 bufflen += sgp->length;
4388
4389 sgp = sg_next(sgp);
4390 if (!sgp)
4391 break;
4392 }
4393
4394 cmd->sg = sg_srr;
4395 cmd->sg_cnt = sg_srr_cnt;
4396 cmd->bufflen = bufflen;
4397 cmd->offset += offset;
4398 cmd->free_sg = 1;
4399
4400 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
4401 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
4402 cmd->sg_cnt);
4403 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
4404 cmd->bufflen);
4405 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
4406 cmd->offset);
4407
4408 if (cmd->sg_cnt < 0)
4409 BUG();
4410
4411 if (cmd->bufflen < 0)
4412 BUG();
4413
4414 return 0;
5897cb2f 4415#endif
2d70c103
NB		 4416}
4417
4418static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
4419 uint32_t srr_rel_offs, int *xmit_type)
4420{
4421 int res = 0, rel_offs;
4422
4423 rel_offs = srr_rel_offs - cmd->offset;
4424 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
4425 srr_rel_offs, rel_offs);
4426
4427 *xmit_type = QLA_TGT_XMIT_ALL;
4428
4429 if (rel_offs < 0) {
4430 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
4431 "qla_target(%d): SRR rel_offs (%d) < 0",
4432 cmd->vha->vp_idx, rel_offs);
4433 res = -1;
4434 } else if (rel_offs == cmd->bufflen)
4435 *xmit_type = QLA_TGT_XMIT_STATUS;
4436 else if (rel_offs > 0)
4437 res = qlt_set_data_offset(cmd, rel_offs);
4438
4439 return res;
4440}
4441
4442/* No locks, thread context */
4443static void qlt_handle_srr(struct scsi_qla_host *vha,
4444 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
4445{
4446 struct imm_ntfy_from_isp *ntfy =
4447 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
4448 struct qla_hw_data *ha = vha->hw;
4449 struct qla_tgt_cmd *cmd = sctio->cmd;
4450 struct se_cmd *se_cmd = &cmd->se_cmd;
4451 unsigned long flags;
4452 int xmit_type = 0, resp = 0;
4453 uint32_t offset;
4454 uint16_t srr_ui;
4455
4456 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
4457 srr_ui = ntfy->u.isp24.srr_ui;
4458
4459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
4460 cmd, srr_ui);
4461
4462 switch (srr_ui) {
4463 case SRR_IU_STATUS:
4464 spin_lock_irqsave(&ha->hardware_lock, flags);
4465 qlt_send_notify_ack(vha, ntfy,
4466 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4467 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4468 xmit_type = QLA_TGT_XMIT_STATUS;
4469 resp = 1;
4470 break;
4471 case SRR_IU_DATA_IN:
4472 if (!cmd->sg || !cmd->sg_cnt) {
4473 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
4474 "Unable to process SRR_IU_DATA_IN due to"
4475 " missing cmd->sg, state: %d\n", cmd->state);
4476 dump_stack();
4477 goto out_reject;
4478 }
4479 if (se_cmd->scsi_status != 0) {
4480 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
4481 "Rejecting SRR_IU_DATA_IN with non GOOD "
4482 "scsi_status\n");
4483 goto out_reject;
4484 }
4485 cmd->bufflen = se_cmd->data_length;
4486
4487 if (qlt_has_data(cmd)) {
4488 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
4489 goto out_reject;
4490 spin_lock_irqsave(&ha->hardware_lock, flags);
4491 qlt_send_notify_ack(vha, ntfy,
4492 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4493 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4494 resp = 1;
4495 } else {
4496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
649ee054
BVA		 4497 "qla_target(%d): SRR for in data for cmd without them (tag %lld, SCSI status %d), reject",
4498 vha->vp_idx, se_cmd->tag,
2d70c103
NB		 4499 cmd->se_cmd.scsi_status);
4500 goto out_reject;
4501 }
4502 break;
4503 case SRR_IU_DATA_OUT:
4504 if (!cmd->sg || !cmd->sg_cnt) {
4505 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
4506 "Unable to process SRR_IU_DATA_OUT due to"
4507 " missing cmd->sg\n");
4508 dump_stack();
4509 goto out_reject;
4510 }
4511 if (se_cmd->scsi_status != 0) {
4512 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
4513 "Rejecting SRR_IU_DATA_OUT"
4514 " with non GOOD scsi_status\n");
4515 goto out_reject;
4516 }
4517 cmd->bufflen = se_cmd->data_length;
4518
4519 if (qlt_has_data(cmd)) {
4520 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
4521 goto out_reject;
4522 spin_lock_irqsave(&ha->hardware_lock, flags);
4523 qlt_send_notify_ack(vha, ntfy,
4524 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4525 spin_unlock_irqrestore(&ha->hardware_lock, flags);
e07f8f65
SK		 4526 if (xmit_type & QLA_TGT_XMIT_DATA) {
4527 cmd->cmd_flags |= BIT_8;
2d70c103 4528 qlt_rdy_to_xfer(cmd);
e07f8f65 4529 }
2d70c103
NB		 4530 } else {
4531 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
649ee054
BVA		 4532 "qla_target(%d): SRR for out data for cmd without them (tag %lld, SCSI status %d), reject",
4533 vha->vp_idx, se_cmd->tag, cmd->se_cmd.scsi_status);
2d70c103
NB		 4534 goto out_reject;
4535 }
4536 break;
4537 default:
4538 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
4539 "qla_target(%d): Unknown srr_ui value %x",
4540 vha->vp_idx, srr_ui);
4541 goto out_reject;
4542 }
4543
4544 /* Transmit response in case of status and data-in cases */
e07f8f65
SK		 4545 if (resp) {
4546 cmd->cmd_flags |= BIT_7;
2d70c103 4547 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
e07f8f65 4548 }
2d70c103
NB		 4549
4550 return;
4551
4552out_reject:
4553 spin_lock_irqsave(&ha->hardware_lock, flags);
4554 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
4555 NOTIFY_ACK_SRR_FLAGS_REJECT,
4556 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4557 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4558 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
4559 cmd->state = QLA_TGT_STATE_DATA_IN;
4560 dump_stack();
e07f8f65
SK		 4561 } else {
4562 cmd->cmd_flags |= BIT_9;
2d70c103 4563 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
e07f8f65 4564 }
2d70c103
NB		 4565 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4566}
4567
4568static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
4569 struct qla_tgt_srr_imm *imm, int ha_locked)
4570{
4571 struct qla_hw_data *ha = vha->hw;
4572 unsigned long flags = 0;
4573
8d16366b 4574#ifndef __CHECKER__
2d70c103
NB		 4575 if (!ha_locked)
4576 spin_lock_irqsave(&ha->hardware_lock, flags);
8d16366b 4577#endif
2d70c103
NB		 4578
4579 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
4580 NOTIFY_ACK_SRR_FLAGS_REJECT,
4581 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4582 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4583
8d16366b 4584#ifndef __CHECKER__
2d70c103
NB		 4585 if (!ha_locked)
4586 spin_unlock_irqrestore(&ha->hardware_lock, flags);
8d16366b 4587#endif
2d70c103
NB		 4588
4589 kfree(imm);
4590}
4591
4592static void qlt_handle_srr_work(struct work_struct *work)
4593{
4594 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
4595 struct scsi_qla_host *vha = tgt->vha;
4596 struct qla_tgt_srr_ctio *sctio;
4597 unsigned long flags;
4598
4599 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
4600 tgt);
4601
4602restart:
4603 spin_lock_irqsave(&tgt->srr_lock, flags);
4604 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
4605 struct qla_tgt_srr_imm *imm, *i, *ti;
4606 struct qla_tgt_cmd *cmd;
4607 struct se_cmd *se_cmd;
4608
4609 imm = NULL;
4610 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
4611 srr_list_entry) {
4612 if (i->srr_id == sctio->srr_id) {
4613 list_del(&i->srr_list_entry);
4614 if (imm) {
4615 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
4616 "qla_target(%d): There must be "
4617 "only one IMM SRR per CTIO SRR "
4618 "(IMM SRR %p, id %d, CTIO %p\n",
4619 vha->vp_idx, i, i->srr_id, sctio);
4620 qlt_reject_free_srr_imm(tgt->vha, i, 0);
4621 } else
4622 imm = i;
4623 }
4624 }
4625
4626 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
4627 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
4628 sctio->srr_id);
4629
4630 if (imm == NULL) {
4631 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
4632 "Not found matching IMM for SRR CTIO (id %d)\n",
4633 sctio->srr_id);
4634 continue;
4635 } else
4636 list_del(&sctio->srr_list_entry);
4637
4638 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4639
4640 cmd = sctio->cmd;
4641 /*
4642 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
4643 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
4644 * logic..
4645 */
4646 cmd->offset = 0;
4647 if (cmd->free_sg) {
4648 kfree(cmd->sg);
4649 cmd->sg = NULL;
4650 cmd->free_sg = 0;
4651 }
4652 se_cmd = &cmd->se_cmd;
4653
4654 cmd->sg_cnt = se_cmd->t_data_nents;
4655 cmd->sg = se_cmd->t_data_sg;
4656
4657 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
649ee054
BVA		 4658 "SRR cmd %p (se_cmd %p, tag %lld, op %x), sg_cnt=%d, offset=%d",
4659 cmd, &cmd->se_cmd, se_cmd->tag, se_cmd->t_task_cdb ?
4660 se_cmd->t_task_cdb[0] : 0, cmd->sg_cnt, cmd->offset);
2d70c103
NB		 4661
4662 qlt_handle_srr(vha, sctio, imm);
4663
4664 kfree(imm);
4665 kfree(sctio);
4666 goto restart;
4667 }
4668 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4669}
4670
4671/* ha->hardware_lock supposed to be held on entry */
4672static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
4673 struct imm_ntfy_from_isp *iocb)
4674{
4675 struct qla_tgt_srr_imm *imm;
0e8cd71c 4676 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4677 struct qla_tgt_srr_ctio *sctio;
4678
4679 tgt->imm_srr_id++;
4680
e07f8f65 4681 ql_log(ql_log_warn, vha, 0xf02d, "qla_target(%d): SRR received\n",
2d70c103
NB		 4682 vha->vp_idx);
4683
4684 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
4685 if (imm != NULL) {
4686 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
4687
4688 /* IRQ is already OFF */
4689 spin_lock(&tgt->srr_lock);
4690 imm->srr_id = tgt->imm_srr_id;
4691 list_add_tail(&imm->srr_list_entry,
4692 &tgt->srr_imm_list);
4693 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
4694 "IMM NTFY SRR %p added (id %d, ui %x)\n",
4695 imm, imm->srr_id, iocb->u.isp24.srr_ui);
4696 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
4697 int found = 0;
4698 list_for_each_entry(sctio, &tgt->srr_ctio_list,
4699 srr_list_entry) {
4700 if (sctio->srr_id == imm->srr_id) {
4701 found = 1;
4702 break;
4703 }
4704 }
4705 if (found) {
4706 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
4707 "Scheduling srr work\n");
4708 schedule_work(&tgt->srr_work);
4709 } else {
4710 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
4711 "qla_target(%d): imm_srr_id "
4712 "== ctio_srr_id (%d), but there is no "
4713 "corresponding SRR CTIO, deleting IMM "
4714 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
4715 imm);
4716 list_del(&imm->srr_list_entry);
4717
4718 kfree(imm);
4719
4720 spin_unlock(&tgt->srr_lock);
4721 goto out_reject;
4722 }
4723 }
4724 spin_unlock(&tgt->srr_lock);
4725 } else {
4726 struct qla_tgt_srr_ctio *ts;
4727
4728 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
4729 "qla_target(%d): Unable to allocate SRR IMM "
4730 "entry, SRR request will be rejected\n", vha->vp_idx);
4731
4732 /* IRQ is already OFF */
4733 spin_lock(&tgt->srr_lock);
4734 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
4735 srr_list_entry) {
4736 if (sctio->srr_id == tgt->imm_srr_id) {
4737 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
4738 "CTIO SRR %p deleted (id %d)\n",
4739 sctio, sctio->srr_id);
4740 list_del(&sctio->srr_list_entry);
4741 qlt_send_term_exchange(vha, sctio->cmd,
4742 &sctio->cmd->atio, 1);
4743 kfree(sctio);
4744 }
4745 }
4746 spin_unlock(&tgt->srr_lock);
4747 goto out_reject;
4748 }
4749
4750 return;
4751
4752out_reject:
4753 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
4754 NOTIFY_ACK_SRR_FLAGS_REJECT,
4755 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4756 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4757}
4758
4759/*
4760 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4761 */
4762static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4763 struct imm_ntfy_from_isp *iocb)
4764{
4765 struct qla_hw_data *ha = vha->hw;
4766 uint32_t add_flags = 0;
4767 int send_notify_ack = 1;
4768 uint16_t status;
4769
4770 status = le16_to_cpu(iocb->u.isp2x.status);
4771 switch (status) {
4772 case IMM_NTFY_LIP_RESET:
4773 {
4774 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4775 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4776 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4777 iocb->u.isp24.status_subcode);
4778
4779 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4780 send_notify_ack = 0;
4781 break;
4782 }
4783
4784 case IMM_NTFY_LIP_LINK_REINIT:
4785 {
0e8cd71c 4786 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4787 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4788 "qla_target(%d): LINK REINIT (loop %#x, "
4789 "subcode %x)\n", vha->vp_idx,
4790 le16_to_cpu(iocb->u.isp24.nport_handle),
4791 iocb->u.isp24.status_subcode);
4792 if (tgt->link_reinit_iocb_pending) {
4793 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4794 0, 0, 0, 0, 0, 0);
4795 }
4796 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4797 tgt->link_reinit_iocb_pending = 1;
4798 /*
4799 * QLogic requires to wait after LINK REINIT for possible
4800 * PDISC or ADISC ELS commands
4801 */
4802 send_notify_ack = 0;
4803 break;
4804 }
4805
4806 case IMM_NTFY_PORT_LOGOUT:
4807 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4808 "qla_target(%d): Port logout (loop "
4809 "%#x, subcode %x)\n", vha->vp_idx,
4810 le16_to_cpu(iocb->u.isp24.nport_handle),
4811 iocb->u.isp24.status_subcode);
4812
4813 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4814 send_notify_ack = 0;
4815 /* The sessions will be cleared in the callback, if needed */
4816 break;
4817
4818 case IMM_NTFY_GLBL_TPRLO:
4819 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4820 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4821 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4822 send_notify_ack = 0;
4823 /* The sessions will be cleared in the callback, if needed */
4824 break;
4825
4826 case IMM_NTFY_PORT_CONFIG:
4827 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4828 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4829 status);
4830 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4831 send_notify_ack = 0;
4832 /* The sessions will be cleared in the callback, if needed */
4833 break;
4834
4835 case IMM_NTFY_GLBL_LOGO:
4836 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4837 "qla_target(%d): Link failure detected\n",
4838 vha->vp_idx);
4839 /* I_T nexus loss */
4840 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4841 send_notify_ack = 0;
4842 break;
4843
4844 case IMM_NTFY_IOCB_OVERFLOW:
4845 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4846 "qla_target(%d): Cannot provide requested "
4847 "capability (IOCB overflowed the immediate notify "
4848 "resource count)\n", vha->vp_idx);
4849 break;
4850
4851 case IMM_NTFY_ABORT_TASK:
4852 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4853 "qla_target(%d): Abort Task (S %08x I %#x -> "
4854 "L %#x)\n", vha->vp_idx,
4855 le16_to_cpu(iocb->u.isp2x.seq_id),
4856 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4857 le16_to_cpu(iocb->u.isp2x.lun));
4858 if (qlt_abort_task(vha, iocb) == 0)
4859 send_notify_ack = 0;
4860 break;
4861
4862 case IMM_NTFY_RESOURCE:
4863 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4864 "qla_target(%d): Out of resources, host %ld\n",
4865 vha->vp_idx, vha->host_no);
4866 break;
4867
4868 case IMM_NTFY_MSG_RX:
4869 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4870 "qla_target(%d): Immediate notify task %x\n",
4871 vha->vp_idx, iocb->u.isp2x.task_flags);
4872 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4873 send_notify_ack = 0;
4874 break;
4875
4876 case IMM_NTFY_ELS:
4877 if (qlt_24xx_handle_els(vha, iocb) == 0)
4878 send_notify_ack = 0;
4879 break;
4880
4881 case IMM_NTFY_SRR:
4882 qlt_prepare_srr_imm(vha, iocb);
4883 send_notify_ack = 0;
4884 break;
4885
4886 default:
4887 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4888 "qla_target(%d): Received unknown immediate "
4889 "notify status %x\n", vha->vp_idx, status);
4890 break;
4891 }
4892
4893 if (send_notify_ack)
4894 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4895}
4896
4897/*
4898 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4899 * This function sends busy to ISP 2xxx or 24xx.
4900 */
33e79977 4901static int __qlt_send_busy(struct scsi_qla_host *vha,
2d70c103
NB		 4902 struct atio_from_isp *atio, uint16_t status)
4903{
4904 struct ctio7_to_24xx *ctio24;
4905 struct qla_hw_data *ha = vha->hw;
4906 request_t *pkt;
4907 struct qla_tgt_sess *sess = NULL;
4908
4909 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4910 atio->u.isp24.fcp_hdr.s_id);
4911 if (!sess) {
4912 qlt_send_term_exchange(vha, NULL, atio, 1);
33e79977 4913 return 0;
2d70c103
NB		 4914 }
4915 /* Sending marker isn't necessary, since we called from ISR */
4916
4917 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4918 if (!pkt) {
667024a3 4919 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 4920 "qla_target(%d): %s failed: unable to allocate "
4921 "request packet", vha->vp_idx, __func__);
33e79977 4922 return -ENOMEM;
2d70c103
NB		 4923 }
4924
ce1025cd 4925 vha->tgt_counters.num_q_full_sent++;
2d70c103
NB		 4926 pkt->entry_count = 1;
4927 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
4928
4929 ctio24 = (struct ctio7_to_24xx *)pkt;
4930 ctio24->entry_type = CTIO_TYPE7;
4931 ctio24->nport_handle = sess->loop_id;
ad950360 4932 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 4933 ctio24->vp_index = vha->vp_idx;
4934 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
4935 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
4936 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
4937 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
4938 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 4939 cpu_to_le16(
2d70c103
NB		 4940 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
4941 CTIO7_FLAGS_DONT_RET_CTIO);
4942 /*
4943 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
4944 * if the explicit conformation is used.
4945 */
4946 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
4947 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 4948 /* Memory Barrier */
4949 wmb();
2d70c103 4950 qla2x00_start_iocbs(vha, vha->req);
33e79977
QT		 4951 return 0;
4952}
4953
4954/*
4955 * This routine is used to allocate a command for either a QFull condition
4956 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
4957 * out previously.
4958 */
4959static void
4960qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
4961 struct atio_from_isp *atio, uint16_t status, int qfull)
4962{
4963 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4964 struct qla_hw_data *ha = vha->hw;
4965 struct qla_tgt_sess *sess;
4966 struct se_session *se_sess;
4967 struct qla_tgt_cmd *cmd;
4968 int tag;
4969
4970 if (unlikely(tgt->tgt_stop)) {
4971 ql_dbg(ql_dbg_io, vha, 0x300a,
4972 "New command while device %p is shutting down\n", tgt);
4973 return;
4974 }
4975
4976 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
4977 vha->hw->tgt.num_qfull_cmds_dropped++;
4978 if (vha->hw->tgt.num_qfull_cmds_dropped >
4979 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
4980 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
4981 vha->hw->tgt.num_qfull_cmds_dropped;
4982
4983 ql_dbg(ql_dbg_io, vha, 0x3068,
4984 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
4985 vha->vp_idx, __func__,
4986 vha->hw->tgt.num_qfull_cmds_dropped);
4987
4988 qlt_chk_exch_leak_thresh_hold(vha);
4989 return;
4990 }
4991
4992 sess = ha->tgt.tgt_ops->find_sess_by_s_id
4993 (vha, atio->u.isp24.fcp_hdr.s_id);
4994 if (!sess)
4995 return;
4996
4997 se_sess = sess->se_sess;
4998
4999 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5000 if (tag < 0)
5001 return;
5002
5003 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5004 if (!cmd) {
5005 ql_dbg(ql_dbg_io, vha, 0x3009,
5006 "qla_target(%d): %s: Allocation of cmd failed\n",
5007 vha->vp_idx, __func__);
5008
5009 vha->hw->tgt.num_qfull_cmds_dropped++;
5010 if (vha->hw->tgt.num_qfull_cmds_dropped >
5011 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
5012 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
5013 vha->hw->tgt.num_qfull_cmds_dropped;
5014
5015 qlt_chk_exch_leak_thresh_hold(vha);
5016 return;
5017 }
5018
5019 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5020
5021 qlt_incr_num_pend_cmds(vha);
5022 INIT_LIST_HEAD(&cmd->cmd_list);
5023 memcpy(&cmd->atio, atio, sizeof(*atio));
5024
5025 cmd->tgt = vha->vha_tgt.qla_tgt;
5026 cmd->vha = vha;
5027 cmd->reset_count = vha->hw->chip_reset;
5028 cmd->q_full = 1;
5029
5030 if (qfull) {
5031 cmd->q_full = 1;
5032 /* NOTE: borrowing the state field to carry the status */
5033 cmd->state = status;
5034 } else
5035 cmd->term_exchg = 1;
5036
5037 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5038
5039 vha->hw->tgt.num_qfull_cmds_alloc++;
5040 if (vha->hw->tgt.num_qfull_cmds_alloc >
5041 vha->hw->qla_stats.stat_max_qfull_cmds_alloc)
5042 vha->hw->qla_stats.stat_max_qfull_cmds_alloc =
5043 vha->hw->tgt.num_qfull_cmds_alloc;
5044}
5045
5046int
5047qlt_free_qfull_cmds(struct scsi_qla_host *vha)
5048{
5049 struct qla_hw_data *ha = vha->hw;
5050 unsigned long flags;
5051 struct qla_tgt_cmd *cmd, *tcmd;
5052 struct list_head free_list;
5053 int rc = 0;
5054
5055 if (list_empty(&ha->tgt.q_full_list))
5056 return 0;
5057
5058 INIT_LIST_HEAD(&free_list);
5059
5060 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
5061
5062 if (list_empty(&ha->tgt.q_full_list)) {
5063 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5064 return 0;
5065 }
5066
5067 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
5068 if (cmd->q_full)
5069 /* cmd->state is a borrowed field to hold status */
5070 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
5071 else if (cmd->term_exchg)
5072 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
5073
5074 if (rc == -ENOMEM)
5075 break;
5076
5077 if (cmd->q_full)
5078 ql_dbg(ql_dbg_io, vha, 0x3006,
5079 "%s: busy sent for ox_id[%04x]\n", __func__,
5080 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5081 else if (cmd->term_exchg)
5082 ql_dbg(ql_dbg_io, vha, 0x3007,
5083 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5084 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5085 else
5086 ql_dbg(ql_dbg_io, vha, 0x3008,
5087 "%s: Unexpected cmd in QFull list %p\n", __func__,
5088 cmd);
5089
5090 list_del(&cmd->cmd_list);
5091 list_add_tail(&cmd->cmd_list, &free_list);
5092
5093 /* piggy back on hardware_lock for protection */
5094 vha->hw->tgt.num_qfull_cmds_alloc--;
5095 }
5096 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5097
5098 cmd = NULL;
5099
5100 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5101 list_del(&cmd->cmd_list);
5102 /* This cmd was never sent to TCM. There is no need
5103 * to schedule free or call free_cmd
5104 */
5105 qlt_free_cmd(cmd);
5106 }
5107 return rc;
5108}
5109
5110static void
5111qlt_send_busy(struct scsi_qla_host *vha,
5112 struct atio_from_isp *atio, uint16_t status)
5113{
5114 int rc = 0;
5115
5116 rc = __qlt_send_busy(vha, atio, status);
5117 if (rc == -ENOMEM)
5118 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5119}
5120
5121static int
5122qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
5123 struct atio_from_isp *atio)
5124{
5125 struct qla_hw_data *ha = vha->hw;
5126 uint16_t status;
5127
5128 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5129 return 0;
5130
5131 status = temp_sam_status;
5132 qlt_send_busy(vha, atio, status);
5133 return 1;
2d70c103
NB		 5134}
5135
5136/* ha->hardware_lock supposed to be held on entry */
5137/* called via callback from qla2xxx */
5138static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
5139 struct atio_from_isp *atio)
5140{
5141 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5142 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5143 int rc;
5144
5145 if (unlikely(tgt == NULL)) {
667024a3 5146 ql_dbg(ql_dbg_io, vha, 0x3064,
2d70c103
NB		 5147 "ATIO pkt, but no tgt (ha %p)", ha);
5148 return;
5149 }
2d70c103
NB		 5150 /*
5151 * In tgt_stop mode we also should allow all requests to pass.
5152 * Otherwise, some commands can stuck.
5153 */
5154
5155 tgt->irq_cmd_count++;
5156
5157 switch (atio->u.raw.entry_type) {
5158 case ATIO_TYPE7:
2d70c103
NB		 5159 if (unlikely(atio->u.isp24.exchange_addr ==
5160 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5161 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5162 "qla_target(%d): ATIO_TYPE7 "
5163 "received with UNKNOWN exchange address, "
5164 "sending QUEUE_FULL\n", vha->vp_idx);
5165 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
5166 break;
5167 }
33e79977
QT		 5168
5169
5170
5171 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5172 rc = qlt_chk_qfull_thresh_hold(vha, atio);
5173 if (rc != 0) {
5174 tgt->irq_cmd_count--;
5175 return;
5176 }
2d70c103 5177 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5178 } else {
2d70c103 5179 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5180 }
2d70c103
NB		 5181 if (unlikely(rc != 0)) {
5182 if (rc == -ESRCH) {
5183#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5184 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5185#else
5186 qlt_send_term_exchange(vha, NULL, atio, 1);
5187#endif
5188 } else {
5189 if (tgt->tgt_stop) {
5190 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5191 "qla_target: Unable to send "
5192 "command to target for req, "
5193 "ignoring.\n");
5194 } else {
5195 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5196 "qla_target(%d): Unable to send "
5197 "command to target, sending BUSY "
5198 "status.\n", vha->vp_idx);
5199 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5200 }
5201 }
5202 }
5203 break;
5204
5205 case IMMED_NOTIFY_TYPE:
5206 {
5207 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5208 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5209 "qla_target(%d): Received ATIO packet %x "
5210 "with error status %x\n", vha->vp_idx,
5211 atio->u.raw.entry_type,
5212 atio->u.isp2x.entry_status);
5213 break;
5214 }
5215 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
5216 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
5217 break;
5218 }
5219
5220 default:
5221 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5222 "qla_target(%d): Received unknown ATIO atio "
5223 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5224 break;
5225 }
5226
5227 tgt->irq_cmd_count--;
5228}
5229
5230/* ha->hardware_lock supposed to be held on entry */
5231/* called via callback from qla2xxx */
5232static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
5233{
5234 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5235 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5236
5237 if (unlikely(tgt == NULL)) {
5238 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5239 "qla_target(%d): Response pkt %x received, but no "
5240 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
5241 return;
5242 }
5243
2d70c103
NB		 5244 /*
5245 * In tgt_stop mode we also should allow all requests to pass.
5246 * Otherwise, some commands can stuck.
5247 */
5248
5249 tgt->irq_cmd_count++;
5250
5251 switch (pkt->entry_type) {
f83adb61 5252 case CTIO_CRC2:
2d70c103
NB		 5253 case CTIO_TYPE7:
5254 {
5255 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
2d70c103
NB		 5256 qlt_do_ctio_completion(vha, entry->handle,
5257 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5258 entry);
5259 break;
5260 }
5261
5262 case ACCEPT_TGT_IO_TYPE:
5263 {
5264 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5265 int rc;
2d70c103 5266 if (atio->u.isp2x.status !=
ad950360 5267 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5268 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5269 "qla_target(%d): ATIO with error "
5270 "status %x received\n", vha->vp_idx,
5271 le16_to_cpu(atio->u.isp2x.status));
5272 break;
5273 }
2d70c103 5274
33e79977
QT		 5275 rc = qlt_chk_qfull_thresh_hold(vha, atio);
5276 if (rc != 0) {
5277 tgt->irq_cmd_count--;
5278 return;
5279 }
5280
2d70c103
NB		 5281 rc = qlt_handle_cmd_for_atio(vha, atio);
5282 if (unlikely(rc != 0)) {
5283 if (rc == -ESRCH) {
5284#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5285 qlt_send_busy(vha, atio, 0);
5286#else
5287 qlt_send_term_exchange(vha, NULL, atio, 1);
5288#endif
5289 } else {
5290 if (tgt->tgt_stop) {
5291 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5292 "qla_target: Unable to send "
5293 "command to target, sending TERM "
5294 "EXCHANGE for rsp\n");
5295 qlt_send_term_exchange(vha, NULL,
5296 atio, 1);
5297 } else {
5298 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5299 "qla_target(%d): Unable to send "
5300 "command to target, sending BUSY "
5301 "status\n", vha->vp_idx);
5302 qlt_send_busy(vha, atio, 0);
5303 }
5304 }
5305 }
5306 }
5307 break;
5308
5309 case CONTINUE_TGT_IO_TYPE:
5310 {
5311 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5312 qlt_do_ctio_completion(vha, entry->handle,
5313 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5314 entry);
5315 break;
5316 }
5317
5318 case CTIO_A64_TYPE:
5319 {
5320 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5321 qlt_do_ctio_completion(vha, entry->handle,
5322 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5323 entry);
5324 break;
5325 }
5326
5327 case IMMED_NOTIFY_TYPE:
5328 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5329 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5330 break;
5331
5332 case NOTIFY_ACK_TYPE:
5333 if (tgt->notify_ack_expected > 0) {
5334 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5335 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5336 "NOTIFY_ACK seq %08x status %x\n",
5337 le16_to_cpu(entry->u.isp2x.seq_id),
5338 le16_to_cpu(entry->u.isp2x.status));
5339 tgt->notify_ack_expected--;
5340 if (entry->u.isp2x.status !=
ad950360 5341 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5342 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5343 "qla_target(%d): NOTIFY_ACK "
5344 "failed %x\n", vha->vp_idx,
5345 le16_to_cpu(entry->u.isp2x.status));
5346 }
5347 } else {
5348 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5349 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5350 vha->vp_idx);
5351 }
5352 break;
5353
5354 case ABTS_RECV_24XX:
5355 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5356 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5357 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5358 break;
5359
5360 case ABTS_RESP_24XX:
5361 if (tgt->abts_resp_expected > 0) {
5362 struct abts_resp_from_24xx_fw *entry =
5363 (struct abts_resp_from_24xx_fw *)pkt;
5364 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5365 "ABTS_RESP_24XX: compl_status %x\n",
5366 entry->compl_status);
5367 tgt->abts_resp_expected--;
5368 if (le16_to_cpu(entry->compl_status) !=
5369 ABTS_RESP_COMPL_SUCCESS) {
5370 if ((entry->error_subcode1 == 0x1E) &&
5371 (entry->error_subcode2 == 0)) {
5372 /*
5373 * We've got a race here: aborted
5374 * exchange not terminated, i.e.
5375 * response for the aborted command was
5376 * sent between the abort request was
5377 * received and processed.
5378 * Unfortunately, the firmware has a
5379 * silly requirement that all aborted
5380 * exchanges must be explicitely
5381 * terminated, otherwise it refuses to
5382 * send responses for the abort
5383 * requests. So, we have to
5384 * (re)terminate the exchange and retry
5385 * the abort response.
5386 */
5387 qlt_24xx_retry_term_exchange(vha,
5388 entry);
5389 } else
5390 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5391 "qla_target(%d): ABTS_RESP_24XX "
5392 "failed %x (subcode %x:%x)",
5393 vha->vp_idx, entry->compl_status,
5394 entry->error_subcode1,
5395 entry->error_subcode2);
5396 }
5397 } else {
5398 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5399 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5400 "received\n", vha->vp_idx);
5401 }
5402 break;
5403
5404 default:
5405 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5406 "qla_target(%d): Received unknown response pkt "
5407 "type %x\n", vha->vp_idx, pkt->entry_type);
5408 break;
5409 }
5410
5411 tgt->irq_cmd_count--;
5412}
5413
5414/*
5415 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5416 */
5417void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5418 uint16_t *mailbox)
5419{
5420 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5421 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5422 int login_code;
2d70c103 5423
2d70c103
NB		 5424 if (!ha->tgt.tgt_ops)
5425 return;
5426
5427 if (unlikely(tgt == NULL)) {
5428 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
5429 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
5430 return;
5431 }
5432
5433 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5434 IS_QLA2100(ha))
5435 return;
5436 /*
5437 * In tgt_stop mode we also should allow all requests to pass.
5438 * Otherwise, some commands can stuck.
5439 */
5440
5441 tgt->irq_cmd_count++;
5442
5443 switch (code) {
5444 case MBA_RESET: /* Reset */
5445 case MBA_SYSTEM_ERR: /* System Error */
5446 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5447 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5448 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5449 "qla_target(%d): System error async event %#x "
6efb3c0a 5450 "occurred", vha->vp_idx, code);
2d70c103
NB		 5451 break;
5452 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5453 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5454 break;
5455
5456 case MBA_LOOP_UP:
5457 {
5458 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5459 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5460 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5461 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5462 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5463 if (tgt->link_reinit_iocb_pending) {
5464 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
5465 0, 0, 0, 0, 0, 0);
5466 tgt->link_reinit_iocb_pending = 0;
5467 }
5468 break;
5469 }
5470
5471 case MBA_LIP_OCCURRED:
5472 case MBA_LOOP_DOWN:
5473 case MBA_LIP_RESET:
5474 case MBA_RSCN_UPDATE:
5475 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5476 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5477 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5478 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5479 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5480 break;
5481
5482 case MBA_PORT_UPDATE:
5483 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5484 "qla_target(%d): Port update async event %#x "
6efb3c0a 5485 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5486 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5487 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5488 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5489
5490 login_code = le16_to_cpu(mailbox[2]);
5491 if (login_code == 0x4)
2d70c103
NB		 5492 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5493 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 5494 else if (login_code == 0x7)
2d70c103
NB		 5495 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5496 "Async MB 2: Port Logged Out\n");
5497 break;
5498
5499 default:
2d70c103
NB		 5500 break;
5501 }
5502
5503 tgt->irq_cmd_count--;
5504}
5505
5506static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5507 uint16_t loop_id)
5508{
5509 fc_port_t *fcport;
5510 int rc;
5511
5512 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
5513 if (!fcport) {
5514 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5515 "qla_target(%d): Allocation of tmp FC port failed",
5516 vha->vp_idx);
5517 return NULL;
5518 }
5519
2d70c103
NB		 5520 fcport->loop_id = loop_id;
5521
5522 rc = qla2x00_get_port_database(vha, fcport, 0);
5523 if (rc != QLA_SUCCESS) {
5524 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5525 "qla_target(%d): Failed to retrieve fcport "
5526 "information -- get_port_database() returned %x "
5527 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5528 kfree(fcport);
5529 return NULL;
5530 }
5531
5532 return fcport;
5533}
5534
5535/* Must be called under tgt_mutex */
5536static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
5537 uint8_t *s_id)
5538{
2d70c103
NB		 5539 struct qla_tgt_sess *sess = NULL;
5540 fc_port_t *fcport = NULL;
5541 int rc, global_resets;
5542 uint16_t loop_id = 0;
5543
5544retry:
0e8cd71c
SK		 5545 global_resets =
5546 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5547
5548 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5549 if (rc != 0) {
5550 if ((s_id[0] == 0xFF) &&
5551 (s_id[1] == 0xFC)) {
5552 /*
5553 * This is Domain Controller, so it should be
5554 * OK to drop SCSI commands from it.
5555 */
5556 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5557 "Unable to find initiator with S_ID %x:%x:%x",
5558 s_id[0], s_id[1], s_id[2]);
5559 } else
5560 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
5561 "qla_target(%d): Unable to find "
5562 "initiator with S_ID %x:%x:%x",
5563 vha->vp_idx, s_id[0], s_id[1],
5564 s_id[2]);
5565 return NULL;
5566 }
5567
5568 fcport = qlt_get_port_database(vha, loop_id);
5569 if (!fcport)
5570 return NULL;
5571
5572 if (global_resets !=
0e8cd71c 5573 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5574 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5575 "qla_target(%d): global reset during session discovery "
5576 "(counter was %d, new %d), retrying", vha->vp_idx,
5577 global_resets,
0e8cd71c
SK		 5578 atomic_read(&vha->vha_tgt.
5579 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5580 goto retry;
5581 }
5582
5583 sess = qlt_create_sess(vha, fcport, true);
5584
5585 kfree(fcport);
5586 return sess;
5587}
5588
5589static void qlt_abort_work(struct qla_tgt *tgt,
5590 struct qla_tgt_sess_work_param *prm)
5591{
5592 struct scsi_qla_host *vha = tgt->vha;
5593 struct qla_hw_data *ha = vha->hw;
5594 struct qla_tgt_sess *sess = NULL;
5595 unsigned long flags;
5596 uint32_t be_s_id;
5597 uint8_t s_id[3];
5598 int rc;
5599
5600 spin_lock_irqsave(&ha->hardware_lock, flags);
5601
5602 if (tgt->tgt_stop)
5603 goto out_term;
5604
5605 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5606 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5607 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5608
5609 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5610 (unsigned char *)&be_s_id);
5611 if (!sess) {
5612 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5613
0e8cd71c 5614 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 5615 sess = qlt_make_local_sess(vha, s_id);
5616 /* sess has got an extra creation ref */
0e8cd71c 5617 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 5618
5619 spin_lock_irqsave(&ha->hardware_lock, flags);
5620 if (!sess)
5621 goto out_term;
5622 } else {
e52a8b45
AP		 5623 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
5624 sess = NULL;
5625 goto out_term;
5626 }
5627
2d70c103
NB		 5628 kref_get(&sess->se_sess->sess_kref);
5629 }
5630
5631 if (tgt->tgt_stop)
5632 goto out_term;
5633
5634 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
5635 if (rc != 0)
5636 goto out_term;
2d70c103
NB		 5637
5638 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 5639 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5640 return;
5641
5642out_term:
5643 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
2d70c103
NB		 5644 if (sess)
5645 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 5646 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5647}
5648
5649static void qlt_tmr_work(struct qla_tgt *tgt,
5650 struct qla_tgt_sess_work_param *prm)
5651{
5652 struct atio_from_isp *a = &prm->tm_iocb2;
5653 struct scsi_qla_host *vha = tgt->vha;
5654 struct qla_hw_data *ha = vha->hw;
5655 struct qla_tgt_sess *sess = NULL;
5656 unsigned long flags;
5657 uint8_t *s_id = NULL; /* to hide compiler warnings */
5658 int rc;
5659 uint32_t lun, unpacked_lun;
52c82823 5660 int fn;
2d70c103
NB		 5661 void *iocb;
5662
5663 spin_lock_irqsave(&ha->hardware_lock, flags);
5664
5665 if (tgt->tgt_stop)
5666 goto out_term;
5667
5668 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5669 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5670 if (!sess) {
5671 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5672
0e8cd71c 5673 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 5674 sess = qlt_make_local_sess(vha, s_id);
5675 /* sess has got an extra creation ref */
0e8cd71c 5676 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 5677
5678 spin_lock_irqsave(&ha->hardware_lock, flags);
5679 if (!sess)
5680 goto out_term;
5681 } else {
e52a8b45
AP		 5682 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
5683 sess = NULL;
5684 goto out_term;
5685 }
5686
2d70c103
NB		 5687 kref_get(&sess->se_sess->sess_kref);
5688 }
5689
5690 iocb = a;
5691 lun = a->u.isp24.fcp_cmnd.lun;
2d70c103
NB		 5692 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
5693 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
5694
5695 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5696 if (rc != 0)
5697 goto out_term;
2d70c103
NB		 5698
5699 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 5700 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5701 return;
5702
5703out_term:
5704 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
2d70c103
NB		 5705 if (sess)
5706 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 5707 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5708}
5709
5710static void qlt_sess_work_fn(struct work_struct *work)
5711{
5712 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
5713 struct scsi_qla_host *vha = tgt->vha;
5714 unsigned long flags;
5715
5716 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
5717
5718 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5719 while (!list_empty(&tgt->sess_works_list)) {
5720 struct qla_tgt_sess_work_param *prm = list_entry(
5721 tgt->sess_works_list.next, typeof(*prm),
5722 sess_works_list_entry);
5723
5724 /*
5725 * This work can be scheduled on several CPUs at time, so we
5726 * must delete the entry to eliminate double processing
5727 */
5728 list_del(&prm->sess_works_list_entry);
5729
5730 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5731
5732 switch (prm->type) {
5733 case QLA_TGT_SESS_WORK_ABORT:
5734 qlt_abort_work(tgt, prm);
5735 break;
5736 case QLA_TGT_SESS_WORK_TM:
5737 qlt_tmr_work(tgt, prm);
5738 break;
5739 default:
5740 BUG_ON(1);
5741 break;
5742 }
5743
5744 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5745
5746 kfree(prm);
5747 }
5748 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5749}
5750
5751/* Must be called under tgt_host_action_mutex */
5752int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
5753{
5754 struct qla_tgt *tgt;
5755
5756 if (!QLA_TGT_MODE_ENABLED())
5757 return 0;
5758
33c36c0a
AE		 5759 if (!IS_TGT_MODE_CAPABLE(ha)) {
5760 ql_log(ql_log_warn, base_vha, 0xe070,
5761 "This adapter does not support target mode.\n");
5762 return 0;
5763 }
5764
2d70c103 5765 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 5766 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 5767
0e8cd71c 5768 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 5769
5770 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
5771 if (!tgt) {
5772 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
5773 "Unable to allocate struct qla_tgt\n");
5774 return -ENOMEM;
5775 }
5776
5777 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
5778 base_vha->host->hostt->supported_mode |= MODE_TARGET;
5779
5780 tgt->ha = ha;
5781 tgt->vha = base_vha;
5782 init_waitqueue_head(&tgt->waitQ);
5783 INIT_LIST_HEAD(&tgt->sess_list);
5784 INIT_LIST_HEAD(&tgt->del_sess_list);
5785 INIT_DELAYED_WORK(&tgt->sess_del_work,
5786 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
5787 spin_lock_init(&tgt->sess_work_lock);
5788 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
5789 INIT_LIST_HEAD(&tgt->sess_works_list);
5790 spin_lock_init(&tgt->srr_lock);
5791 INIT_LIST_HEAD(&tgt->srr_ctio_list);
5792 INIT_LIST_HEAD(&tgt->srr_imm_list);
5793 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
5794 atomic_set(&tgt->tgt_global_resets_count, 0);
5795
0e8cd71c 5796 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 5797
5798 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
5799 "qla_target(%d): using 64 Bit PCI addressing",
5800 base_vha->vp_idx);
5801 tgt->tgt_enable_64bit_addr = 1;
5802 /* 3 is reserved */
5803 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
5804 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
5805 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
5806
ddb95145
NB		 5807 if (base_vha->fc_vport)
5808 return 0;
5809
2d70c103
NB		 5810 mutex_lock(&qla_tgt_mutex);
5811 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
5812 mutex_unlock(&qla_tgt_mutex);
5813
5814 return 0;
5815}
5816
5817/* Must be called under tgt_host_action_mutex */
5818int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
5819{
0e8cd71c 5820 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 5821 return 0;
5822
ddb95145
NB		 5823 if (vha->fc_vport) {
5824 qlt_release(vha->vha_tgt.qla_tgt);
5825 return 0;
5826 }
33e79977
QT		 5827
5828 /* free left over qfull cmds */
5829 qlt_init_term_exchange(vha);
5830
2d70c103 5831 mutex_lock(&qla_tgt_mutex);
0e8cd71c 5832 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 5833 mutex_unlock(&qla_tgt_mutex);
5834
5835 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
5836 vha->host_no, ha);
0e8cd71c 5837 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 5838
5839 return 0;
5840}
5841
5842static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
5843 unsigned char *b)
5844{
5845 int i;
5846
5847 pr_debug("qla2xxx HW vha->node_name: ");
5848 for (i = 0; i < WWN_SIZE; i++)
5849 pr_debug("%02x ", vha->node_name[i]);
5850 pr_debug("\n");
5851 pr_debug("qla2xxx HW vha->port_name: ");
5852 for (i = 0; i < WWN_SIZE; i++)
5853 pr_debug("%02x ", vha->port_name[i]);
5854 pr_debug("\n");
5855
5856 pr_debug("qla2xxx passed configfs WWPN: ");
5857 put_unaligned_be64(wwpn, b);
5858 for (i = 0; i < WWN_SIZE; i++)
5859 pr_debug("%02x ", b[i]);
5860 pr_debug("\n");
5861}
5862
5863/**
5864 * qla_tgt_lport_register - register lport with external module
5865 *
5866 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
5867 * @wwpn: Passwd FC target WWPN
5868 * @callback: lport initialization callback for tcm_qla2xxx code
5869 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
5870 */
49a47f2c
NB		 5871int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
5872 u64 npiv_wwpn, u64 npiv_wwnn,
5873 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 5874{
5875 struct qla_tgt *tgt;
5876 struct scsi_qla_host *vha;
5877 struct qla_hw_data *ha;
5878 struct Scsi_Host *host;
5879 unsigned long flags;
5880 int rc;
5881 u8 b[WWN_SIZE];
5882
5883 mutex_lock(&qla_tgt_mutex);
5884 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
5885 vha = tgt->vha;
5886 ha = vha->hw;
5887
5888 host = vha->host;
5889 if (!host)
5890 continue;
5891
2d70c103
NB		 5892 if (!(host->hostt->supported_mode & MODE_TARGET))
5893 continue;
5894
5895 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 5896 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 5897 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
5898 host->host_no);
5899 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5900 continue;
5901 }
ddb95145
NB		 5902 if (tgt->tgt_stop) {
5903 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
5904 host->host_no);
5905 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5906 continue;
5907 }
2d70c103
NB		 5908 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5909
5910 if (!scsi_host_get(host)) {
5911 ql_dbg(ql_dbg_tgt, vha, 0xe068,
5912 "Unable to scsi_host_get() for"
5913 " qla2xxx scsi_host\n");
5914 continue;
5915 }
49a47f2c 5916 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 5917
5918 if (memcmp(vha->port_name, b, WWN_SIZE)) {
5919 scsi_host_put(host);
5920 continue;
5921 }
49a47f2c
NB		 5922 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
5923 if (rc != 0)
5924 scsi_host_put(host);
5925
ddb95145 5926 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 5927 return rc;
5928 }
5929 mutex_unlock(&qla_tgt_mutex);
5930
5931 return -ENODEV;
5932}
5933EXPORT_SYMBOL(qlt_lport_register);
5934
5935/**
5936 * qla_tgt_lport_deregister - Degister lport
5937 *
5938 * @vha: Registered scsi_qla_host pointer
5939 */
5940void qlt_lport_deregister(struct scsi_qla_host *vha)
5941{
5942 struct qla_hw_data *ha = vha->hw;
5943 struct Scsi_Host *sh = vha->host;
5944 /*
5945 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
5946 */
0e8cd71c 5947 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 5948 ha->tgt.tgt_ops = NULL;
5949 /*
5950 * Release the Scsi_Host reference for the underlying qla2xxx host
5951 */
5952 scsi_host_put(sh);
5953}
5954EXPORT_SYMBOL(qlt_lport_deregister);
5955
5956/* Must be called under HW lock */
55a9066f 5957static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103
NB		 5958{
5959 struct qla_hw_data *ha = vha->hw;
5960
5961 switch (ql2x_ini_mode) {
5962 case QLA2XXX_INI_MODE_DISABLED:
5963 case QLA2XXX_INI_MODE_EXCLUSIVE:
5964 vha->host->active_mode = MODE_TARGET;
5965 break;
5966 case QLA2XXX_INI_MODE_ENABLED:
5967 vha->host->active_mode |= MODE_TARGET;
5968 break;
5969 default:
5970 break;
5971 }
5972
5973 if (ha->tgt.ini_mode_force_reverse)
5974 qla_reverse_ini_mode(vha);
5975}
5976
5977/* Must be called under HW lock */
55a9066f 5978static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103
NB		 5979{
5980 struct qla_hw_data *ha = vha->hw;
5981
5982 switch (ql2x_ini_mode) {
5983 case QLA2XXX_INI_MODE_DISABLED:
5984 vha->host->active_mode = MODE_UNKNOWN;
5985 break;
5986 case QLA2XXX_INI_MODE_EXCLUSIVE:
5987 vha->host->active_mode = MODE_INITIATOR;
5988 break;
5989 case QLA2XXX_INI_MODE_ENABLED:
5990 vha->host->active_mode &= ~MODE_TARGET;
5991 break;
5992 default:
5993 break;
5994 }
5995
5996 if (ha->tgt.ini_mode_force_reverse)
5997 qla_reverse_ini_mode(vha);
5998}
5999
6000/*
6001 * qla_tgt_enable_vha - NO LOCK HELD
6002 *
6003 * host_reset, bring up w/ Target Mode Enabled
6004 */
6005void
6006qlt_enable_vha(struct scsi_qla_host *vha)
6007{
6008 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6009 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6010 unsigned long flags;
0e8cd71c 6011 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 6012
6013 if (!tgt) {
6014 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6015 "Unable to locate qla_tgt pointer from"
6016 " struct qla_hw_data\n");
6017 dump_stack();
6018 return;
6019 }
6020
6021 spin_lock_irqsave(&ha->hardware_lock, flags);
6022 tgt->tgt_stopped = 0;
6023 qlt_set_mode(vha);
6024 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6025
0e8cd71c
SK		 6026 if (vha->vp_idx) {
6027 qla24xx_disable_vp(vha);
6028 qla24xx_enable_vp(vha);
6029 } else {
6030 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6031 qla2xxx_wake_dpc(base_vha);
6032 qla2x00_wait_for_hba_online(base_vha);
6033 }
2d70c103
NB		 6034}
6035EXPORT_SYMBOL(qlt_enable_vha);
6036
6037/*
6038 * qla_tgt_disable_vha - NO LOCK HELD
6039 *
6040 * Disable Target Mode and reset the adapter
6041 */
55a9066f 6042static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6043{
6044 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6045 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6046 unsigned long flags;
6047
6048 if (!tgt) {
6049 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6050 "Unable to locate qla_tgt pointer from"
6051 " struct qla_hw_data\n");
6052 dump_stack();
6053 return;
6054 }
6055
6056 spin_lock_irqsave(&ha->hardware_lock, flags);
6057 qlt_clear_mode(vha);
6058 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6059
6060 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6061 qla2xxx_wake_dpc(vha);
6062 qla2x00_wait_for_hba_online(vha);
6063}
6064
6065/*
6066 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6067 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6068 * members.
6069 */
6070void
6071qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6072{
6073 if (!qla_tgt_mode_enabled(vha))
6074 return;
6075
0e8cd71c
SK		 6076 vha->vha_tgt.qla_tgt = NULL;
6077
6078 mutex_init(&vha->vha_tgt.tgt_mutex);
6079 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6080
6081 qlt_clear_mode(vha);
6082
6083 /*
6084 * NOTE: Currently the value is kept the same for <24xx and
6085 * >=24xx ISPs. If it is necessary to change it,
6086 * the check should be added for specific ISPs,
6087 * assigning the value appropriately.
6088 */
6089 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6090
6091 qlt_add_target(ha, vha);
2d70c103
NB		 6092}
6093
6094void
6095qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6096{
6097 /*
6098 * FC-4 Feature bit 0 indicates target functionality to the name server.
6099 */
6100 if (qla_tgt_mode_enabled(vha)) {
6101 if (qla_ini_mode_enabled(vha))
6102 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
6103 else
6104 ct_req->req.rff_id.fc4_feature = BIT_0;
6105 } else if (qla_ini_mode_enabled(vha)) {
6106 ct_req->req.rff_id.fc4_feature = BIT_1;
6107 }
6108}
6109
6110/*
6111 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6112 * @ha: HA context
6113 *
6114 * Beginning of ATIO ring has initialization control block already built
6115 * by nvram config routine.
6116 *
6117 * Returns 0 on success.
6118 */
6119void
6120qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6121{
6122 struct qla_hw_data *ha = vha->hw;
6123 uint16_t cnt;
6124 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6125
6126 if (!qla_tgt_mode_enabled(vha))
6127 return;
6128
6129 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6130 pkt->u.raw.signature = ATIO_PROCESSED;
6131 pkt++;
6132 }
6133
6134}
6135
6136/*
6137 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6138 * @ha: SCSI driver HA context
6139 */
6140void
6141qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
6142{
6143 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6144 struct atio_from_isp *pkt;
6145 int cnt, i;
6146
6147 if (!vha->flags.online)
6148 return;
6149
6150 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
6151 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6152 cnt = pkt->u.raw.entry_count;
6153
6154 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
6155
6156 for (i = 0; i < cnt; i++) {
6157 ha->tgt.atio_ring_index++;
6158 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6159 ha->tgt.atio_ring_index = 0;
6160 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6161 } else
6162 ha->tgt.atio_ring_ptr++;
6163
6164 pkt->u.raw.signature = ATIO_PROCESSED;
6165 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6166 }
6167 wmb();
6168 }
6169
6170 /* Adjust ring index */
aa230bc5 6171 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
3761f3e8 6172 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
2d70c103
NB		 6173}
6174
6175void
aa230bc5 6176qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6177{
6178 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 6179 if (!QLA_TGT_MODE_ENABLED())
6180 return;
2d70c103 6181
aa230bc5
AE		 6182 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6183 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6184 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6185
6186 if (IS_ATIO_MSIX_CAPABLE(ha)) {
6187 struct qla_msix_entry *msix = &ha->msix_entries[2];
6188 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6189
6190 icb->msix_atio = cpu_to_le16(msix->entry);
6191 ql_dbg(ql_dbg_init, vha, 0xf072,
6192 "Registering ICB vector 0x%x for atio que.\n",
6193 msix->entry);
2d70c103
NB		 6194 }
6195}
6196
6197void
6198qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6199{
6200 struct qla_hw_data *ha = vha->hw;
6201
6202 if (qla_tgt_mode_enabled(vha)) {
6203 if (!ha->tgt.saved_set) {
6204 /* We save only once */
6205 ha->tgt.saved_exchange_count = nv->exchange_count;
6206 ha->tgt.saved_firmware_options_1 =
6207 nv->firmware_options_1;
6208 ha->tgt.saved_firmware_options_2 =
6209 nv->firmware_options_2;
6210 ha->tgt.saved_firmware_options_3 =
6211 nv->firmware_options_3;
6212 ha->tgt.saved_set = 1;
6213 }
6214
ad950360 6215 nv->exchange_count = cpu_to_le16(0xFFFF);
2d70c103
NB		 6216
6217 /* Enable target mode */
ad950360 6218 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6219
6220 /* Disable ini mode, if requested */
6221 if (!qla_ini_mode_enabled(vha))
ad950360 6222 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6223
6224 /* Disable Full Login after LIP */
ad950360 6225 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6226 /* Enable initial LIP */
ad950360 6227 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6228 if (ql2xtgt_tape_enable)
6229 /* Enable FC Tape support */
6230 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6231 else
6232 /* Disable FC Tape support */
6233 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6234
2d70c103 6235 /* Disable Full Login after LIP */
ad950360 6236 nv->host_p &= cpu_to_le32(~BIT_10);
2d70c103 6237 /* Enable target PRLI control */
ad950360 6238 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6239 } else {
6240 if (ha->tgt.saved_set) {
6241 nv->exchange_count = ha->tgt.saved_exchange_count;
6242 nv->firmware_options_1 =
6243 ha->tgt.saved_firmware_options_1;
6244 nv->firmware_options_2 =
6245 ha->tgt.saved_firmware_options_2;
6246 nv->firmware_options_3 =
6247 ha->tgt.saved_firmware_options_3;
6248 }
6249 return;
6250 }
6251
6252 /* out-of-order frames reassembly */
6253 nv->firmware_options_3 |= BIT_6|BIT_9;
6254
6255 if (ha->tgt.enable_class_2) {
6256 if (vha->flags.init_done)
6257 fc_host_supported_classes(vha->host) =
6258 FC_COS_CLASS2 | FC_COS_CLASS3;
6259
ad950360 6260 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6261 } else {
6262 if (vha->flags.init_done)
6263 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6264
ad950360 6265 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6266 }
6267}
6268
6269void
6270qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6271 struct init_cb_24xx *icb)
6272{
6273 struct qla_hw_data *ha = vha->hw;
6274
6275 if (ha->tgt.node_name_set) {
6276 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6277 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6278 }
6279}
6280
aa230bc5
AE		 6281void
6282qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6283{
6284 struct qla_hw_data *ha = vha->hw;
6285
6286 if (!QLA_TGT_MODE_ENABLED())
6287 return;
6288
6289 if (qla_tgt_mode_enabled(vha)) {
6290 if (!ha->tgt.saved_set) {
6291 /* We save only once */
6292 ha->tgt.saved_exchange_count = nv->exchange_count;
6293 ha->tgt.saved_firmware_options_1 =
6294 nv->firmware_options_1;
6295 ha->tgt.saved_firmware_options_2 =
6296 nv->firmware_options_2;
6297 ha->tgt.saved_firmware_options_3 =
6298 nv->firmware_options_3;
6299 ha->tgt.saved_set = 1;
6300 }
6301
ad950360 6302 nv->exchange_count = cpu_to_le16(0xFFFF);
aa230bc5
AE		 6303
6304 /* Enable target mode */
ad950360 6305 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6306
6307 /* Disable ini mode, if requested */
6308 if (!qla_ini_mode_enabled(vha))
ad950360 6309 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5
AE		 6310
6311 /* Disable Full Login after LIP */
ad950360 6312 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6313 /* Enable initial LIP */
ad950360 6314 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6315 if (ql2xtgt_tape_enable)
6316 /* Enable FC tape support */
6317 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6318 else
6319 /* Disable FC tape support */
6320 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6321
aa230bc5 6322 /* Disable Full Login after LIP */
ad950360 6323 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6324 /* Enable target PRLI control */
ad950360 6325 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6326 } else {
6327 if (ha->tgt.saved_set) {
6328 nv->exchange_count = ha->tgt.saved_exchange_count;
6329 nv->firmware_options_1 =
6330 ha->tgt.saved_firmware_options_1;
6331 nv->firmware_options_2 =
6332 ha->tgt.saved_firmware_options_2;
6333 nv->firmware_options_3 =
6334 ha->tgt.saved_firmware_options_3;
6335 }
6336 return;
6337 }
6338
6339 /* out-of-order frames reassembly */
6340 nv->firmware_options_3 |= BIT_6|BIT_9;
6341
6342 if (ha->tgt.enable_class_2) {
6343 if (vha->flags.init_done)
6344 fc_host_supported_classes(vha->host) =
6345 FC_COS_CLASS2 | FC_COS_CLASS3;
6346
ad950360 6347 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6348 } else {
6349 if (vha->flags.init_done)
6350 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6351
ad950360 6352 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6353 }
6354}
6355
6356void
6357qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6358 struct init_cb_81xx *icb)
6359{
6360 struct qla_hw_data *ha = vha->hw;
6361
6362 if (!QLA_TGT_MODE_ENABLED())
6363 return;
6364
6365 if (ha->tgt.node_name_set) {
6366 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6367 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6368 }
6369}
6370
6371void
6372qlt_83xx_iospace_config(struct qla_hw_data *ha)
6373{
6374 if (!QLA_TGT_MODE_ENABLED())
6375 return;
6376
6377 ha->msix_count += 1; /* For ATIO Q */
6378}
6379
2d70c103
NB		 6380int
6381qlt_24xx_process_response_error(struct scsi_qla_host *vha,
6382 struct sts_entry_24xx *pkt)
6383{
6384 switch (pkt->entry_type) {
6385 case ABTS_RECV_24XX:
6386 case ABTS_RESP_24XX:
6387 case CTIO_TYPE7:
6388 case NOTIFY_ACK_TYPE:
f83adb61 6389 case CTIO_CRC2:
2d70c103
NB		 6390 return 1;
6391 default:
6392 return 0;
6393 }
6394}
6395
6396void
6397qlt_modify_vp_config(struct scsi_qla_host *vha,
6398 struct vp_config_entry_24xx *vpmod)
6399{
6400 if (qla_tgt_mode_enabled(vha))
6401 vpmod->options_idx1 &= ~BIT_5;
6402 /* Disable ini mode, if requested */
6403 if (!qla_ini_mode_enabled(vha))
6404 vpmod->options_idx1 &= ~BIT_4;
6405}
6406
6407void
6408qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6409{
6410 if (!QLA_TGT_MODE_ENABLED())
6411 return;
6412
b20f02e1 6413 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6414 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6415 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6416 } else {
6417 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6418 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6419 }
6420
0e8cd71c
SK		 6421 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6422 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6423 qlt_clear_mode(base_vha);
6424}
6425
aa230bc5
AE		 6426irqreturn_t
6427qla83xx_msix_atio_q(int irq, void *dev_id)
6428{
6429 struct rsp_que *rsp;
6430 scsi_qla_host_t *vha;
6431 struct qla_hw_data *ha;
6432 unsigned long flags;
6433
6434 rsp = (struct rsp_que *) dev_id;
6435 ha = rsp->hw;
6436 vha = pci_get_drvdata(ha->pdev);
6437
6438 spin_lock_irqsave(&ha->hardware_lock, flags);
6439
6440 qlt_24xx_process_atio_queue(vha);
6441 qla24xx_process_response_queue(vha, rsp);
6442
6443 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6444
6445 return IRQ_HANDLED;
6446}
6447
2d70c103
NB		 6448int
6449qlt_mem_alloc(struct qla_hw_data *ha)
6450{
6451 if (!QLA_TGT_MODE_ENABLED())
6452 return 0;
6453
6454 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6455 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6456 if (!ha->tgt.tgt_vp_map)
6457 return -ENOMEM;
6458
6459 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6460 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6461 &ha->tgt.atio_dma, GFP_KERNEL);
6462 if (!ha->tgt.atio_ring) {
6463 kfree(ha->tgt.tgt_vp_map);
6464 return -ENOMEM;
6465 }
6466 return 0;
6467}
6468
6469void
6470qlt_mem_free(struct qla_hw_data *ha)
6471{
6472 if (!QLA_TGT_MODE_ENABLED())
6473 return;
6474
6475 if (ha->tgt.atio_ring) {
6476 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6477 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6478 ha->tgt.atio_dma);
6479 }
6480 kfree(ha->tgt.tgt_vp_map);
6481}
6482
6483/* vport_slock to be held by the caller */
6484void
6485qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6486{
6487 if (!QLA_TGT_MODE_ENABLED())
6488 return;
6489
6490 switch (cmd) {
6491 case SET_VP_IDX:
6492 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6493 break;
6494 case SET_AL_PA:
6495 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
6496 break;
6497 case RESET_VP_IDX:
6498 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
6499 break;
6500 case RESET_AL_PA:
6501 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
6502 break;
6503 }
6504}
6505
6506static int __init qlt_parse_ini_mode(void)
6507{
6508 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
6509 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
6510 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
6511 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
6512 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
6513 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
6514 else
6515 return false;
6516
6517 return true;
6518}
6519
6520int __init qlt_init(void)
6521{
6522 int ret;
6523
6524 if (!qlt_parse_ini_mode()) {
6525 ql_log(ql_log_fatal, NULL, 0xe06b,
6526 "qlt_parse_ini_mode() failed\n");
6527 return -EINVAL;
6528 }
6529
6530 if (!QLA_TGT_MODE_ENABLED())
6531 return 0;
6532
2d70c103
NB		 6533 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
6534 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
6535 qla_tgt_mgmt_cmd), 0, NULL);
6536 if (!qla_tgt_mgmt_cmd_cachep) {
6537 ql_log(ql_log_fatal, NULL, 0xe06d,
6538 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 6539 return -ENOMEM;
2d70c103
NB		 6540 }
6541
6542 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
6543 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
6544 if (!qla_tgt_mgmt_cmd_mempool) {
6545 ql_log(ql_log_fatal, NULL, 0xe06e,
6546 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
6547 ret = -ENOMEM;
6548 goto out_mgmt_cmd_cachep;
6549 }
6550
6551 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
6552 if (!qla_tgt_wq) {
6553 ql_log(ql_log_fatal, NULL, 0xe06f,
6554 "alloc_workqueue for qla_tgt_wq failed\n");
6555 ret = -ENOMEM;
6556 goto out_cmd_mempool;
6557 }
6558 /*
6559 * Return 1 to signal that initiator-mode is being disabled
6560 */
6561 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
6562
6563out_cmd_mempool:
6564 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
6565out_mgmt_cmd_cachep:
6566 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 6567 return ret;
6568}
6569
6570void qlt_exit(void)
6571{
6572 if (!QLA_TGT_MODE_ENABLED())
6573 return;
6574
6575 destroy_workqueue(qla_tgt_wq);
6576 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
6577 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 6578}
Linux 6.x block layer and io_uring tree(s)