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iscsi-target: Bump default TCP listen backlog to 256
[deliverable/linux.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 *
13 * Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org>
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
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
45static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
46module_param(qlini_mode, charp, S_IRUGO);
47MODULE_PARM_DESC(qlini_mode,
48 "Determines when initiator mode will be enabled. Possible values: "
49 "\"exclusive\" - initiator mode will be enabled on load, "
50 "disabled on enabling target mode and then on disabling target mode "
51 "enabled back; "
52 "\"disabled\" - initiator mode will never be enabled; "
53 "\"enabled\" (default) - initiator mode will always stay enabled.");
54
aa230bc5 55int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103
NB		 56
57/*
58 * From scsi/fc/fc_fcp.h
59 */
60enum fcp_resp_rsp_codes {
61 FCP_TMF_CMPL = 0,
62 FCP_DATA_LEN_INVALID = 1,
63 FCP_CMND_FIELDS_INVALID = 2,
64 FCP_DATA_PARAM_MISMATCH = 3,
65 FCP_TMF_REJECTED = 4,
66 FCP_TMF_FAILED = 5,
67 FCP_TMF_INVALID_LUN = 9,
68};
69
70/*
71 * fc_pri_ta from scsi/fc/fc_fcp.h
72 */
73#define FCP_PTA_SIMPLE 0 /* simple task attribute */
74#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
75#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 76#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 77#define FCP_PTA_MASK 7 /* mask for task attribute field */
78#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
79#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
80
81/*
82 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
83 * must be called under HW lock and could unlock/lock it inside.
84 * It isn't an issue, since in the current implementation on the time when
85 * those functions are called:
86 *
87 * - Either context is IRQ and only IRQ handler can modify HW data,
88 * including rings related fields,
89 *
90 * - Or access to target mode variables from struct qla_tgt doesn't
91 * cross those functions boundaries, except tgt_stop, which
92 * additionally protected by irq_cmd_count.
93 */
94/* Predefs for callbacks handed to qla2xxx LLD */
95static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
96 struct atio_from_isp *pkt);
97static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
98static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
99 int fn, void *iocb, int flags);
100static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
101 *cmd, struct atio_from_isp *atio, int ha_locked);
102static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
103 struct qla_tgt_srr_imm *imm, int ha_lock);
104/*
105 * Global Variables
106 */
107static struct kmem_cache *qla_tgt_cmd_cachep;
108static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
109static mempool_t *qla_tgt_mgmt_cmd_mempool;
110static struct workqueue_struct *qla_tgt_wq;
111static DEFINE_MUTEX(qla_tgt_mutex);
112static LIST_HEAD(qla_tgt_glist);
113
114/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
115static struct qla_tgt_sess *qlt_find_sess_by_port_name(
116 struct qla_tgt *tgt,
117 const uint8_t *port_name)
118{
119 struct qla_tgt_sess *sess;
120
121 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
122 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
123 return sess;
124 }
125
126 return NULL;
127}
128
129/* Might release hw lock, then reaquire!! */
130static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
131{
132 /* Send marker if required */
133 if (unlikely(vha->marker_needed != 0)) {
134 int rc = qla2x00_issue_marker(vha, vha_locked);
135 if (rc != QLA_SUCCESS) {
136 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
137 "qla_target(%d): issue_marker() failed\n",
138 vha->vp_idx);
139 }
140 return rc;
141 }
142 return QLA_SUCCESS;
143}
144
145static inline
146struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
147 uint8_t *d_id)
148{
149 struct qla_hw_data *ha = vha->hw;
150 uint8_t vp_idx;
151
152 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
153 return NULL;
154
155 if (vha->d_id.b.al_pa == d_id[2])
156 return vha;
157
158 BUG_ON(ha->tgt.tgt_vp_map == NULL);
159 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
160 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
161 return ha->tgt.tgt_vp_map[vp_idx].vha;
162
163 return NULL;
164}
165
166static inline
167struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
168 uint16_t vp_idx)
169{
170 struct qla_hw_data *ha = vha->hw;
171
172 if (vha->vp_idx == vp_idx)
173 return vha;
174
175 BUG_ON(ha->tgt.tgt_vp_map == NULL);
176 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
177 return ha->tgt.tgt_vp_map[vp_idx].vha;
178
179 return NULL;
180}
181
182void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
183 struct atio_from_isp *atio)
184{
185 switch (atio->u.raw.entry_type) {
186 case ATIO_TYPE7:
187 {
188 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
189 atio->u.isp24.fcp_hdr.d_id);
190 if (unlikely(NULL == host)) {
191 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
192 "qla_target(%d): Received ATIO_TYPE7 "
193 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
194 atio->u.isp24.fcp_hdr.d_id[0],
195 atio->u.isp24.fcp_hdr.d_id[1],
196 atio->u.isp24.fcp_hdr.d_id[2]);
197 break;
198 }
199 qlt_24xx_atio_pkt(host, atio);
200 break;
201 }
202
203 case IMMED_NOTIFY_TYPE:
204 {
205 struct scsi_qla_host *host = vha;
206 struct imm_ntfy_from_isp *entry =
207 (struct imm_ntfy_from_isp *)atio;
208
209 if ((entry->u.isp24.vp_index != 0xFF) &&
210 (entry->u.isp24.nport_handle != 0xFFFF)) {
211 host = qlt_find_host_by_vp_idx(vha,
212 entry->u.isp24.vp_index);
213 if (unlikely(!host)) {
214 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
215 "qla_target(%d): Received "
216 "ATIO (IMMED_NOTIFY_TYPE) "
217 "with unknown vp_index %d\n",
218 vha->vp_idx, entry->u.isp24.vp_index);
219 break;
220 }
221 }
222 qlt_24xx_atio_pkt(host, atio);
223 break;
224 }
225
226 default:
227 ql_dbg(ql_dbg_tgt, vha, 0xe040,
228 "qla_target(%d): Received unknown ATIO atio "
229 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
230 break;
231 }
232
233 return;
234}
235
236void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
237{
238 switch (pkt->entry_type) {
239 case CTIO_TYPE7:
240 {
241 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
242 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
243 entry->vp_index);
244 if (unlikely(!host)) {
245 ql_dbg(ql_dbg_tgt, vha, 0xe041,
246 "qla_target(%d): Response pkt (CTIO_TYPE7) "
247 "received, with unknown vp_index %d\n",
248 vha->vp_idx, entry->vp_index);
249 break;
250 }
251 qlt_response_pkt(host, pkt);
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 *)pkt;
260
261 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
262 if (unlikely(!host)) {
263 ql_dbg(ql_dbg_tgt, vha, 0xe042,
264 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
265 "received, with unknown vp_index %d\n",
266 vha->vp_idx, entry->u.isp24.vp_index);
267 break;
268 }
269 qlt_response_pkt(host, pkt);
270 break;
271 }
272
273 case NOTIFY_ACK_TYPE:
274 {
275 struct scsi_qla_host *host = vha;
276 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
277
278 if (0xFF != entry->u.isp24.vp_index) {
279 host = qlt_find_host_by_vp_idx(vha,
280 entry->u.isp24.vp_index);
281 if (unlikely(!host)) {
282 ql_dbg(ql_dbg_tgt, vha, 0xe043,
283 "qla_target(%d): Response "
284 "pkt (NOTIFY_ACK_TYPE) "
285 "received, with unknown "
286 "vp_index %d\n", vha->vp_idx,
287 entry->u.isp24.vp_index);
288 break;
289 }
290 }
291 qlt_response_pkt(host, pkt);
292 break;
293 }
294
295 case ABTS_RECV_24XX:
296 {
297 struct abts_recv_from_24xx *entry =
298 (struct abts_recv_from_24xx *)pkt;
299 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
300 entry->vp_index);
301 if (unlikely(!host)) {
302 ql_dbg(ql_dbg_tgt, vha, 0xe044,
303 "qla_target(%d): Response pkt "
304 "(ABTS_RECV_24XX) received, with unknown "
305 "vp_index %d\n", vha->vp_idx, entry->vp_index);
306 break;
307 }
308 qlt_response_pkt(host, pkt);
309 break;
310 }
311
312 case ABTS_RESP_24XX:
313 {
314 struct abts_resp_to_24xx *entry =
315 (struct abts_resp_to_24xx *)pkt;
316 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
317 entry->vp_index);
318 if (unlikely(!host)) {
319 ql_dbg(ql_dbg_tgt, vha, 0xe045,
320 "qla_target(%d): Response pkt "
321 "(ABTS_RECV_24XX) received, with unknown "
322 "vp_index %d\n", vha->vp_idx, entry->vp_index);
323 break;
324 }
325 qlt_response_pkt(host, pkt);
326 break;
327 }
328
329 default:
330 qlt_response_pkt(vha, pkt);
331 break;
332 }
333
334}
335
336static void qlt_free_session_done(struct work_struct *work)
337{
338 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
339 free_work);
340 struct qla_tgt *tgt = sess->tgt;
341 struct scsi_qla_host *vha = sess->vha;
342 struct qla_hw_data *ha = vha->hw;
343
344 BUG_ON(!tgt);
345 /*
346 * Release the target session for FC Nexus from fabric module code.
347 */
348 if (sess->se_sess != NULL)
349 ha->tgt.tgt_ops->free_session(sess);
350
351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
352 "Unregistration of sess %p finished\n", sess);
353
354 kfree(sess);
355 /*
356 * We need to protect against race, when tgt is freed before or
357 * inside wake_up()
358 */
359 tgt->sess_count--;
360 if (tgt->sess_count == 0)
361 wake_up_all(&tgt->waitQ);
362}
363
364/* ha->hardware_lock supposed to be held on entry */
365void qlt_unreg_sess(struct qla_tgt_sess *sess)
366{
367 struct scsi_qla_host *vha = sess->vha;
368
369 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
370
371 list_del(&sess->sess_list_entry);
372 if (sess->deleted)
373 list_del(&sess->del_list_entry);
374
375 INIT_WORK(&sess->free_work, qlt_free_session_done);
376 schedule_work(&sess->free_work);
377}
378EXPORT_SYMBOL(qlt_unreg_sess);
379
380/* ha->hardware_lock supposed to be held on entry */
381static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
382{
383 struct qla_hw_data *ha = vha->hw;
384 struct qla_tgt_sess *sess = NULL;
385 uint32_t unpacked_lun, lun = 0;
386 uint16_t loop_id;
387 int res = 0;
388 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
389 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
390
391 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
392 if (loop_id == 0xFFFF) {
393#if 0 /* FIXME: Re-enable Global event handling.. */
394 /* Global event */
395 atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
396 qlt_clear_tgt_db(ha->tgt.qla_tgt, 1);
397 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
398 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
399 typeof(*sess), sess_list_entry);
400 switch (mcmd) {
401 case QLA_TGT_NEXUS_LOSS_SESS:
402 mcmd = QLA_TGT_NEXUS_LOSS;
403 break;
404 case QLA_TGT_ABORT_ALL_SESS:
405 mcmd = QLA_TGT_ABORT_ALL;
406 break;
407 case QLA_TGT_NEXUS_LOSS:
408 case QLA_TGT_ABORT_ALL:
409 break;
410 default:
411 ql_dbg(ql_dbg_tgt, vha, 0xe046,
412 "qla_target(%d): Not allowed "
413 "command %x in %s", vha->vp_idx,
414 mcmd, __func__);
415 sess = NULL;
416 break;
417 }
418 } else
419 sess = NULL;
420#endif
421 } else {
422 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
423 }
424
425 ql_dbg(ql_dbg_tgt, vha, 0xe000,
426 "Using sess for qla_tgt_reset: %p\n", sess);
427 if (!sess) {
428 res = -ESRCH;
429 return res;
430 }
431
432 ql_dbg(ql_dbg_tgt, vha, 0xe047,
433 "scsi(%ld): resetting (session %p from port "
434 "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x, "
435 "mcmd %x, loop_id %d)\n", vha->host_no, sess,
436 sess->port_name[0], sess->port_name[1],
437 sess->port_name[2], sess->port_name[3],
438 sess->port_name[4], sess->port_name[5],
439 sess->port_name[6], sess->port_name[7],
440 mcmd, loop_id);
441
442 lun = a->u.isp24.fcp_cmnd.lun;
443 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
444
445 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
446 iocb, QLA24XX_MGMT_SEND_NACK);
447}
448
449/* ha->hardware_lock supposed to be held on entry */
450static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
451 bool immediate)
452{
453 struct qla_tgt *tgt = sess->tgt;
454 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
455
456 if (sess->deleted)
457 return;
458
459 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
460 "Scheduling sess %p for deletion\n", sess);
461 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
462 sess->deleted = 1;
463
464 if (immediate)
465 dev_loss_tmo = 0;
466
467 sess->expires = jiffies + dev_loss_tmo * HZ;
468
469 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
470 "qla_target(%d): session for port %02x:%02x:%02x:"
471 "%02x:%02x:%02x:%02x:%02x (loop ID %d) scheduled for "
472 "deletion in %u secs (expires: %lu) immed: %d\n",
473 sess->vha->vp_idx,
474 sess->port_name[0], sess->port_name[1],
475 sess->port_name[2], sess->port_name[3],
476 sess->port_name[4], sess->port_name[5],
477 sess->port_name[6], sess->port_name[7],
478 sess->loop_id, dev_loss_tmo, sess->expires, immediate);
479
480 if (immediate)
481 schedule_delayed_work(&tgt->sess_del_work, 0);
482 else
483 schedule_delayed_work(&tgt->sess_del_work,
484 jiffies - sess->expires);
485}
486
487/* ha->hardware_lock supposed to be held on entry */
488static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
489{
490 struct qla_tgt_sess *sess;
491
492 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
493 qlt_schedule_sess_for_deletion(sess, true);
494
495 /* At this point tgt could be already dead */
496}
497
498static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
499 uint16_t *loop_id)
500{
501 struct qla_hw_data *ha = vha->hw;
502 dma_addr_t gid_list_dma;
503 struct gid_list_info *gid_list;
504 char *id_iter;
505 int res, rc, i;
506 uint16_t entries;
507
508 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
509 &gid_list_dma, GFP_KERNEL);
510 if (!gid_list) {
511 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
512 "qla_target(%d): DMA Alloc failed of %u\n",
513 vha->vp_idx, qla2x00_gid_list_size(ha));
514 return -ENOMEM;
515 }
516
517 /* Get list of logged in devices */
518 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
519 if (rc != QLA_SUCCESS) {
520 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
521 "qla_target(%d): get_id_list() failed: %x\n",
522 vha->vp_idx, rc);
523 res = -1;
524 goto out_free_id_list;
525 }
526
527 id_iter = (char *)gid_list;
528 res = -1;
529 for (i = 0; i < entries; i++) {
530 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
531 if ((gid->al_pa == s_id[2]) &&
532 (gid->area == s_id[1]) &&
533 (gid->domain == s_id[0])) {
534 *loop_id = le16_to_cpu(gid->loop_id);
535 res = 0;
536 break;
537 }
538 id_iter += ha->gid_list_info_size;
539 }
540
541out_free_id_list:
542 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
543 gid_list, gid_list_dma);
544 return res;
545}
546
2d70c103
NB		 547/* ha->hardware_lock supposed to be held on entry */
548static void qlt_undelete_sess(struct qla_tgt_sess *sess)
549{
550 BUG_ON(!sess->deleted);
551
552 list_del(&sess->del_list_entry);
553 sess->deleted = 0;
554}
555
556static void qlt_del_sess_work_fn(struct delayed_work *work)
557{
558 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
559 sess_del_work);
560 struct scsi_qla_host *vha = tgt->vha;
561 struct qla_hw_data *ha = vha->hw;
562 struct qla_tgt_sess *sess;
563 unsigned long flags;
564
565 spin_lock_irqsave(&ha->hardware_lock, flags);
566 while (!list_empty(&tgt->del_sess_list)) {
567 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
568 del_list_entry);
569 if (time_after_eq(jiffies, sess->expires)) {
2d70c103
NB		 570 qlt_undelete_sess(sess);
571
08234e3a
JE		 572 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
573 "Timeout: sess %p about to be deleted\n",
574 sess);
575 ha->tgt.tgt_ops->shutdown_sess(sess);
576 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 577 } else {
578 schedule_delayed_work(&tgt->sess_del_work,
579 jiffies - sess->expires);
580 break;
581 }
582 }
583 spin_unlock_irqrestore(&ha->hardware_lock, flags);
584}
585
586/*
587 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
588 * Caller must put it.
589 */
590static struct qla_tgt_sess *qlt_create_sess(
591 struct scsi_qla_host *vha,
592 fc_port_t *fcport,
593 bool local)
594{
595 struct qla_hw_data *ha = vha->hw;
596 struct qla_tgt_sess *sess;
597 unsigned long flags;
598 unsigned char be_sid[3];
599
600 /* Check to avoid double sessions */
601 spin_lock_irqsave(&ha->hardware_lock, flags);
602 list_for_each_entry(sess, &ha->tgt.qla_tgt->sess_list,
603 sess_list_entry) {
604 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
605 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
606 "Double sess %p found (s_id %x:%x:%x, "
607 "loop_id %d), updating to d_id %x:%x:%x, "
608 "loop_id %d", sess, sess->s_id.b.domain,
609 sess->s_id.b.al_pa, sess->s_id.b.area,
610 sess->loop_id, fcport->d_id.b.domain,
611 fcport->d_id.b.al_pa, fcport->d_id.b.area,
612 fcport->loop_id);
613
614 if (sess->deleted)
615 qlt_undelete_sess(sess);
616
617 kref_get(&sess->se_sess->sess_kref);
c8292d1d
RD		 618 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
619 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
620
2d70c103
NB		 621 if (sess->local && !local)
622 sess->local = 0;
623 spin_unlock_irqrestore(&ha->hardware_lock, flags);
624
625 return sess;
626 }
627 }
628 spin_unlock_irqrestore(&ha->hardware_lock, flags);
629
630 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
631 if (!sess) {
632 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
633 "qla_target(%u): session allocation failed, "
634 "all commands from port %02x:%02x:%02x:%02x:"
635 "%02x:%02x:%02x:%02x will be refused", vha->vp_idx,
636 fcport->port_name[0], fcport->port_name[1],
637 fcport->port_name[2], fcport->port_name[3],
638 fcport->port_name[4], fcport->port_name[5],
639 fcport->port_name[6], fcport->port_name[7]);
640
641 return NULL;
642 }
643 sess->tgt = ha->tgt.qla_tgt;
644 sess->vha = vha;
645 sess->s_id = fcport->d_id;
646 sess->loop_id = fcport->loop_id;
647 sess->local = local;
648
649 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
650 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
651 sess, ha->tgt.qla_tgt);
652
653 be_sid[0] = sess->s_id.b.domain;
654 be_sid[1] = sess->s_id.b.area;
655 be_sid[2] = sess->s_id.b.al_pa;
656 /*
657 * Determine if this fc_port->port_name is allowed to access
658 * target mode using explict NodeACLs+MappedLUNs, or using
659 * TPG demo mode. If this is successful a target mode FC nexus
660 * is created.
661 */
662 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
663 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
664 kfree(sess);
665 return NULL;
666 }
667 /*
668 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
669 * access across ->hardware_lock reaquire.
670 */
671 kref_get(&sess->se_sess->sess_kref);
672
c8292d1d 673 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
2d70c103
NB		 674 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
675 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
676
677 spin_lock_irqsave(&ha->hardware_lock, flags);
678 list_add_tail(&sess->sess_list_entry, &ha->tgt.qla_tgt->sess_list);
679 ha->tgt.qla_tgt->sess_count++;
680 spin_unlock_irqrestore(&ha->hardware_lock, flags);
681
682 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
683 "qla_target(%d): %ssession for wwn %02x:%02x:%02x:%02x:"
684 "%02x:%02x:%02x:%02x (loop_id %d, s_id %x:%x:%x, confirmed"
685 " completion %ssupported) added\n",
686 vha->vp_idx, local ? "local " : "", fcport->port_name[0],
687 fcport->port_name[1], fcport->port_name[2], fcport->port_name[3],
688 fcport->port_name[4], fcport->port_name[5], fcport->port_name[6],
689 fcport->port_name[7], fcport->loop_id, sess->s_id.b.domain,
690 sess->s_id.b.area, sess->s_id.b.al_pa, sess->conf_compl_supported ?
691 "" : "not ");
692
693 return sess;
694}
695
696/*
697 * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
698 */
699void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
700{
701 struct qla_hw_data *ha = vha->hw;
702 struct qla_tgt *tgt = ha->tgt.qla_tgt;
703 struct qla_tgt_sess *sess;
704 unsigned long flags;
705
706 if (!vha->hw->tgt.tgt_ops)
707 return;
708
709 if (!tgt || (fcport->port_type != FCT_INITIATOR))
710 return;
711
712 spin_lock_irqsave(&ha->hardware_lock, flags);
713 if (tgt->tgt_stop) {
714 spin_unlock_irqrestore(&ha->hardware_lock, flags);
715 return;
716 }
717 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
718 if (!sess) {
719 spin_unlock_irqrestore(&ha->hardware_lock, flags);
720
721 mutex_lock(&ha->tgt.tgt_mutex);
722 sess = qlt_create_sess(vha, fcport, false);
723 mutex_unlock(&ha->tgt.tgt_mutex);
724
725 spin_lock_irqsave(&ha->hardware_lock, flags);
726 } else {
727 kref_get(&sess->se_sess->sess_kref);
728
729 if (sess->deleted) {
730 qlt_undelete_sess(sess);
731
732 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
733 "qla_target(%u): %ssession for port %02x:"
734 "%02x:%02x:%02x:%02x:%02x:%02x:%02x (loop ID %d) "
735 "reappeared\n", vha->vp_idx, sess->local ? "local "
736 : "", sess->port_name[0], sess->port_name[1],
737 sess->port_name[2], sess->port_name[3],
738 sess->port_name[4], sess->port_name[5],
739 sess->port_name[6], sess->port_name[7],
740 sess->loop_id);
741
742 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
743 "Reappeared sess %p\n", sess);
744 }
c8292d1d
RD		 745 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
746 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
2d70c103
NB		 747 }
748
749 if (sess && sess->local) {
750 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
751 "qla_target(%u): local session for "
752 "port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
753 "(loop ID %d) became global\n", vha->vp_idx,
754 fcport->port_name[0], fcport->port_name[1],
755 fcport->port_name[2], fcport->port_name[3],
756 fcport->port_name[4], fcport->port_name[5],
757 fcport->port_name[6], fcport->port_name[7],
758 sess->loop_id);
759 sess->local = 0;
760 }
2d70c103 761 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 762 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 763}
764
765void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
766{
767 struct qla_hw_data *ha = vha->hw;
768 struct qla_tgt *tgt = ha->tgt.qla_tgt;
769 struct qla_tgt_sess *sess;
770 unsigned long flags;
771
772 if (!vha->hw->tgt.tgt_ops)
773 return;
774
775 if (!tgt || (fcport->port_type != FCT_INITIATOR))
776 return;
777
778 spin_lock_irqsave(&ha->hardware_lock, flags);
779 if (tgt->tgt_stop) {
780 spin_unlock_irqrestore(&ha->hardware_lock, flags);
781 return;
782 }
783 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
784 if (!sess) {
785 spin_unlock_irqrestore(&ha->hardware_lock, flags);
786 return;
787 }
788
789 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
790
791 sess->local = 1;
792 qlt_schedule_sess_for_deletion(sess, false);
793 spin_unlock_irqrestore(&ha->hardware_lock, flags);
794}
795
796static inline int test_tgt_sess_count(struct qla_tgt *tgt)
797{
798 struct qla_hw_data *ha = tgt->ha;
799 unsigned long flags;
800 int res;
801 /*
802 * We need to protect against race, when tgt is freed before or
803 * inside wake_up()
804 */
805 spin_lock_irqsave(&ha->hardware_lock, flags);
806 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
807 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
808 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
809 res = (tgt->sess_count == 0);
810 spin_unlock_irqrestore(&ha->hardware_lock, flags);
811
812 return res;
813}
814
815/* Called by tcm_qla2xxx configfs code */
816void qlt_stop_phase1(struct qla_tgt *tgt)
817{
818 struct scsi_qla_host *vha = tgt->vha;
819 struct qla_hw_data *ha = tgt->ha;
820 unsigned long flags;
821
822 if (tgt->tgt_stop || tgt->tgt_stopped) {
823 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
824 "Already in tgt->tgt_stop or tgt_stopped state\n");
825 dump_stack();
826 return;
827 }
828
829 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
830 vha->host_no, vha);
831 /*
832 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
833 * Lock is needed, because we still can get an incoming packet.
834 */
835 mutex_lock(&ha->tgt.tgt_mutex);
836 spin_lock_irqsave(&ha->hardware_lock, flags);
837 tgt->tgt_stop = 1;
838 qlt_clear_tgt_db(tgt, true);
839 spin_unlock_irqrestore(&ha->hardware_lock, flags);
840 mutex_unlock(&ha->tgt.tgt_mutex);
841
43829731 842 flush_delayed_work(&tgt->sess_del_work);
2d70c103
NB		 843
844 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
845 "Waiting for sess works (tgt %p)", tgt);
846 spin_lock_irqsave(&tgt->sess_work_lock, flags);
847 while (!list_empty(&tgt->sess_works_list)) {
848 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
849 flush_scheduled_work();
850 spin_lock_irqsave(&tgt->sess_work_lock, flags);
851 }
852 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
853
854 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
855 "Waiting for tgt %p: list_empty(sess_list)=%d "
856 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
857 tgt->sess_count);
858
859 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
860
861 /* Big hammer */
862 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
863 qlt_disable_vha(vha);
864
865 /* Wait for sessions to clear out (just in case) */
866 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
867}
868EXPORT_SYMBOL(qlt_stop_phase1);
869
870/* Called by tcm_qla2xxx configfs code */
871void qlt_stop_phase2(struct qla_tgt *tgt)
872{
873 struct qla_hw_data *ha = tgt->ha;
874 unsigned long flags;
875
876 if (tgt->tgt_stopped) {
877 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf04f,
878 "Already in tgt->tgt_stopped state\n");
879 dump_stack();
880 return;
881 }
882
883 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00b,
884 "Waiting for %d IRQ commands to complete (tgt %p)",
885 tgt->irq_cmd_count, tgt);
886
887 mutex_lock(&ha->tgt.tgt_mutex);
888 spin_lock_irqsave(&ha->hardware_lock, flags);
889 while (tgt->irq_cmd_count != 0) {
890 spin_unlock_irqrestore(&ha->hardware_lock, flags);
891 udelay(2);
892 spin_lock_irqsave(&ha->hardware_lock, flags);
893 }
894 tgt->tgt_stop = 0;
895 tgt->tgt_stopped = 1;
896 spin_unlock_irqrestore(&ha->hardware_lock, flags);
897 mutex_unlock(&ha->tgt.tgt_mutex);
898
899 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00c, "Stop of tgt %p finished",
900 tgt);
901}
902EXPORT_SYMBOL(qlt_stop_phase2);
903
904/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 905static void qlt_release(struct qla_tgt *tgt)
2d70c103
NB		 906{
907 struct qla_hw_data *ha = tgt->ha;
908
909 if ((ha->tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
910 qlt_stop_phase2(tgt);
911
912 ha->tgt.qla_tgt = NULL;
913
914 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00d,
915 "Release of tgt %p finished\n", tgt);
916
917 kfree(tgt);
918}
919
920/* ha->hardware_lock supposed to be held on entry */
921static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
922 const void *param, unsigned int param_size)
923{
924 struct qla_tgt_sess_work_param *prm;
925 unsigned long flags;
926
927 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
928 if (!prm) {
929 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
930 "qla_target(%d): Unable to create session "
931 "work, command will be refused", 0);
932 return -ENOMEM;
933 }
934
935 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
936 "Scheduling work (type %d, prm %p)"
937 " to find session for param %p (size %d, tgt %p)\n",
938 type, prm, param, param_size, tgt);
939
940 prm->type = type;
941 memcpy(&prm->tm_iocb, param, param_size);
942
943 spin_lock_irqsave(&tgt->sess_work_lock, flags);
944 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
945 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
946
947 schedule_work(&tgt->sess_work);
948
949 return 0;
950}
951
952/*
953 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
954 */
955static void qlt_send_notify_ack(struct scsi_qla_host *vha,
956 struct imm_ntfy_from_isp *ntfy,
957 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
958 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
959{
960 struct qla_hw_data *ha = vha->hw;
961 request_t *pkt;
962 struct nack_to_isp *nack;
963
964 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
965
966 /* Send marker if required */
967 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
968 return;
969
970 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
971 if (!pkt) {
972 ql_dbg(ql_dbg_tgt, vha, 0xe049,
973 "qla_target(%d): %s failed: unable to allocate "
974 "request packet\n", vha->vp_idx, __func__);
975 return;
976 }
977
978 if (ha->tgt.qla_tgt != NULL)
979 ha->tgt.qla_tgt->notify_ack_expected++;
980
981 pkt->entry_type = NOTIFY_ACK_TYPE;
982 pkt->entry_count = 1;
983
984 nack = (struct nack_to_isp *)pkt;
985 nack->ox_id = ntfy->ox_id;
986
987 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
988 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
989 nack->u.isp24.flags = ntfy->u.isp24.flags &
990 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
991 }
992 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
993 nack->u.isp24.status = ntfy->u.isp24.status;
994 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 995 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 996 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
997 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
998 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
999 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1000 nack->u.isp24.srr_reject_code = srr_reject_code;
1001 nack->u.isp24.srr_reject_code_expl = srr_explan;
1002 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1003
1004 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1005 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1006 vha->vp_idx, nack->u.isp24.status);
1007
1008 qla2x00_start_iocbs(vha, vha->req);
1009}
1010
1011/*
1012 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1013 */
1014static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1015 struct abts_recv_from_24xx *abts, uint32_t status,
1016 bool ids_reversed)
1017{
1018 struct qla_hw_data *ha = vha->hw;
1019 struct abts_resp_to_24xx *resp;
1020 uint32_t f_ctl;
1021 uint8_t *p;
1022
1023 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1024 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1025 ha, abts, status);
1026
1027 /* Send marker if required */
1028 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1029 return;
1030
1031 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1032 if (!resp) {
1033 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1034 "qla_target(%d): %s failed: unable to allocate "
1035 "request packet", vha->vp_idx, __func__);
1036 return;
1037 }
1038
1039 resp->entry_type = ABTS_RESP_24XX;
1040 resp->entry_count = 1;
1041 resp->nport_handle = abts->nport_handle;
1042 resp->vp_index = vha->vp_idx;
1043 resp->sof_type = abts->sof_type;
1044 resp->exchange_address = abts->exchange_address;
1045 resp->fcp_hdr_le = abts->fcp_hdr_le;
1046 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1047 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1048 F_CTL_SEQ_INITIATIVE);
1049 p = (uint8_t *)&f_ctl;
1050 resp->fcp_hdr_le.f_ctl[0] = *p++;
1051 resp->fcp_hdr_le.f_ctl[1] = *p++;
1052 resp->fcp_hdr_le.f_ctl[2] = *p;
1053 if (ids_reversed) {
1054 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1055 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1056 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1057 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1058 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1059 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1060 } else {
1061 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1062 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1063 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1064 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1065 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1066 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1067 }
1068 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1069 if (status == FCP_TMF_CMPL) {
1070 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1071 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1072 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1073 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1074 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1075 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1076 } else {
1077 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1078 resp->payload.ba_rjt.reason_code =
1079 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1080 /* Other bytes are zero */
1081 }
1082
1083 ha->tgt.qla_tgt->abts_resp_expected++;
1084
1085 qla2x00_start_iocbs(vha, vha->req);
1086}
1087
1088/*
1089 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1090 */
1091static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1092 struct abts_resp_from_24xx_fw *entry)
1093{
1094 struct ctio7_to_24xx *ctio;
1095
1096 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1097 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1098 /* Send marker if required */
1099 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1100 return;
1101
1102 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1103 if (ctio == NULL) {
1104 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1105 "qla_target(%d): %s failed: unable to allocate "
1106 "request packet\n", vha->vp_idx, __func__);
1107 return;
1108 }
1109
1110 /*
1111 * We've got on entrance firmware's response on by us generated
1112 * ABTS response. So, in it ID fields are reversed.
1113 */
1114
1115 ctio->entry_type = CTIO_TYPE7;
1116 ctio->entry_count = 1;
1117 ctio->nport_handle = entry->nport_handle;
1118 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1119 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1120 ctio->vp_index = vha->vp_idx;
1121 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1122 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1123 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1124 ctio->exchange_addr = entry->exchange_addr_to_abort;
1125 ctio->u.status1.flags =
1126 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1127 CTIO7_FLAGS_TERMINATE);
1128 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1129
1130 qla2x00_start_iocbs(vha, vha->req);
1131
1132 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1133 FCP_TMF_CMPL, true);
1134}
1135
1136/* ha->hardware_lock supposed to be held on entry */
1137static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1138 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1139{
1140 struct qla_hw_data *ha = vha->hw;
06e97b48 1141 struct se_session *se_sess = sess->se_sess;
2d70c103 1142 struct qla_tgt_mgmt_cmd *mcmd;
06e97b48
SH		 1143 struct se_cmd *se_cmd;
1144 u32 lun = 0;
2d70c103 1145 int rc;
06e97b48
SH		 1146 bool found_lun = false;
1147
1148 spin_lock(&se_sess->sess_cmd_lock);
1149 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1150 struct qla_tgt_cmd *cmd =
1151 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1152 if (cmd->tag == abts->exchange_addr_to_abort) {
1153 lun = cmd->unpacked_lun;
1154 found_lun = true;
1155 break;
1156 }
1157 }
1158 spin_unlock(&se_sess->sess_cmd_lock);
1159
1160 if (!found_lun)
1161 return -ENOENT;
2d70c103
NB		 1162
1163 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1164 "qla_target(%d): task abort (tag=%d)\n",
1165 vha->vp_idx, abts->exchange_addr_to_abort);
1166
1167 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1168 if (mcmd == NULL) {
1169 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1170 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1171 vha->vp_idx, __func__);
1172 return -ENOMEM;
1173 }
1174 memset(mcmd, 0, sizeof(*mcmd));
1175
1176 mcmd->sess = sess;
1177 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1178
06e97b48 1179 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
2d70c103
NB		 1180 abts->exchange_addr_to_abort);
1181 if (rc != 0) {
1182 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1183 "qla_target(%d): tgt_ops->handle_tmr()"
1184 " failed: %d", vha->vp_idx, rc);
1185 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1186 return -EFAULT;
1187 }
1188
1189 return 0;
1190}
1191
1192/*
1193 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1194 */
1195static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1196 struct abts_recv_from_24xx *abts)
1197{
1198 struct qla_hw_data *ha = vha->hw;
1199 struct qla_tgt_sess *sess;
1200 uint32_t tag = abts->exchange_addr_to_abort;
1201 uint8_t s_id[3];
1202 int rc;
1203
1204 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1205 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1206 "qla_target(%d): ABTS: Abort Sequence not "
1207 "supported\n", vha->vp_idx);
1208 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1209 return;
1210 }
1211
1212 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1213 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1214 "qla_target(%d): ABTS: Unknown Exchange "
1215 "Address received\n", vha->vp_idx);
1216 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1217 return;
1218 }
1219
1220 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1221 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1222 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1223 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1224 le32_to_cpu(abts->fcp_hdr_le.parameter));
1225
1226 s_id[0] = abts->fcp_hdr_le.s_id[2];
1227 s_id[1] = abts->fcp_hdr_le.s_id[1];
1228 s_id[2] = abts->fcp_hdr_le.s_id[0];
1229
1230 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1231 if (!sess) {
1232 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1233 "qla_target(%d): task abort for non-existant session\n",
1234 vha->vp_idx);
1235 rc = qlt_sched_sess_work(ha->tgt.qla_tgt,
1236 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1237 if (rc != 0) {
1238 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1239 false);
1240 }
1241 return;
1242 }
1243
1244 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1245 if (rc != 0) {
1246 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1247 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1248 vha->vp_idx, rc);
1249 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1250 return;
1251 }
1252}
1253
1254/*
1255 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1256 */
1257static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1258 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1259{
1260 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1261 struct ctio7_to_24xx *ctio;
1262
1263 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1264 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1265 ha, atio, resp_code);
1266
1267 /* Send marker if required */
1268 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1269 return;
1270
1271 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1272 if (ctio == NULL) {
1273 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1274 "qla_target(%d): %s failed: unable to allocate "
1275 "request packet\n", ha->vp_idx, __func__);
1276 return;
1277 }
1278
1279 ctio->entry_type = CTIO_TYPE7;
1280 ctio->entry_count = 1;
1281 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1282 ctio->nport_handle = mcmd->sess->loop_id;
1283 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1284 ctio->vp_index = ha->vp_idx;
1285 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1286 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1287 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1288 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1289 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1290 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1291 CTIO7_FLAGS_SEND_STATUS);
1292 ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1293 ctio->u.status1.scsi_status =
1294 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1295 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
e4b11b89 1296 ctio->u.status1.sense_data[0] = resp_code;
2d70c103
NB		 1297
1298 qla2x00_start_iocbs(ha, ha->req);
1299}
1300
1301void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1302{
1303 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1304}
1305EXPORT_SYMBOL(qlt_free_mcmd);
1306
1307/* callback from target fabric module code */
1308void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1309{
1310 struct scsi_qla_host *vha = mcmd->sess->vha;
1311 struct qla_hw_data *ha = vha->hw;
1312 unsigned long flags;
1313
1314 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1315 "TM response mcmd (%p) status %#x state %#x",
1316 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1317
1318 spin_lock_irqsave(&ha->hardware_lock, flags);
1319 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1320 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1321 0, 0, 0, 0, 0, 0);
1322 else {
1323 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1324 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1325 mcmd->fc_tm_rsp, false);
1326 else
1327 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1328 mcmd->fc_tm_rsp);
1329 }
1330 /*
1331 * Make the callback for ->free_mcmd() to queue_work() and invoke
1332 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1333 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1334 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1335 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1336 * qlt_xmit_tm_rsp() returns here..
1337 */
1338 ha->tgt.tgt_ops->free_mcmd(mcmd);
1339 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1340}
1341EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1342
1343/* No locks */
1344static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1345{
1346 struct qla_tgt_cmd *cmd = prm->cmd;
1347
1348 BUG_ON(cmd->sg_cnt == 0);
1349
1350 prm->sg = (struct scatterlist *)cmd->sg;
1351 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1352 cmd->sg_cnt, cmd->dma_data_direction);
1353 if (unlikely(prm->seg_cnt == 0))
1354 goto out_err;
1355
1356 prm->cmd->sg_mapped = 1;
1357
1358 /*
1359 * If greater than four sg entries then we need to allocate
1360 * the continuation entries
1361 */
1362 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1363 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1364 prm->tgt->datasegs_per_cmd, prm->tgt->datasegs_per_cont);
1365
1366 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
1367 prm->seg_cnt, prm->req_cnt);
1368 return 0;
1369
1370out_err:
1371 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1372 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1373 0, prm->cmd->sg_cnt);
1374 return -1;
1375}
1376
1377static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
1378 struct qla_tgt_cmd *cmd)
1379{
1380 struct qla_hw_data *ha = vha->hw;
1381
1382 BUG_ON(!cmd->sg_mapped);
1383 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1384 cmd->sg_mapped = 0;
1385}
1386
1387static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1388 uint32_t req_cnt)
1389{
1390 struct qla_hw_data *ha = vha->hw;
1391 device_reg_t __iomem *reg = ha->iobase;
1392 uint32_t cnt;
1393
1394 if (vha->req->cnt < (req_cnt + 2)) {
1395 cnt = (uint16_t)RD_REG_DWORD(&reg->isp24.req_q_out);
1396
1397 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
1398 "Request ring circled: cnt=%d, vha->->ring_index=%d, "
1399 "vha->req->cnt=%d, req_cnt=%d\n", cnt,
1400 vha->req->ring_index, vha->req->cnt, req_cnt);
1401 if (vha->req->ring_index < cnt)
1402 vha->req->cnt = cnt - vha->req->ring_index;
1403 else
1404 vha->req->cnt = vha->req->length -
1405 (vha->req->ring_index - cnt);
1406 }
1407
1408 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1409 ql_dbg(ql_dbg_tgt, vha, 0xe00b,
1410 "qla_target(%d): There is no room in the "
1411 "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
1412 "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
1413 vha->req->cnt, req_cnt);
1414 return -EAGAIN;
1415 }
1416 vha->req->cnt -= req_cnt;
1417
1418 return 0;
1419}
1420
1421/*
1422 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1423 */
1424static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1425{
1426 /* Adjust ring index. */
1427 vha->req->ring_index++;
1428 if (vha->req->ring_index == vha->req->length) {
1429 vha->req->ring_index = 0;
1430 vha->req->ring_ptr = vha->req->ring;
1431 } else {
1432 vha->req->ring_ptr++;
1433 }
1434 return (cont_entry_t *)vha->req->ring_ptr;
1435}
1436
1437/* ha->hardware_lock supposed to be held on entry */
1438static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1439{
1440 struct qla_hw_data *ha = vha->hw;
1441 uint32_t h;
1442
1443 h = ha->tgt.current_handle;
1444 /* always increment cmd handle */
1445 do {
1446 ++h;
8d93f550 1447 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 1448 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1449 if (h == ha->tgt.current_handle) {
1450 ql_dbg(ql_dbg_tgt, vha, 0xe04e,
1451 "qla_target(%d): Ran out of "
1452 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1453 h = QLA_TGT_NULL_HANDLE;
1454 break;
1455 }
1456 } while ((h == QLA_TGT_NULL_HANDLE) ||
1457 (h == QLA_TGT_SKIP_HANDLE) ||
1458 (ha->tgt.cmds[h-1] != NULL));
1459
1460 if (h != QLA_TGT_NULL_HANDLE)
1461 ha->tgt.current_handle = h;
1462
1463 return h;
1464}
1465
1466/* ha->hardware_lock supposed to be held on entry */
1467static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1468 struct scsi_qla_host *vha)
1469{
1470 uint32_t h;
1471 struct ctio7_to_24xx *pkt;
1472 struct qla_hw_data *ha = vha->hw;
1473 struct atio_from_isp *atio = &prm->cmd->atio;
1474
1475 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1476 prm->pkt = pkt;
1477 memset(pkt, 0, sizeof(*pkt));
1478
1479 pkt->entry_type = CTIO_TYPE7;
1480 pkt->entry_count = (uint8_t)prm->req_cnt;
1481 pkt->vp_index = vha->vp_idx;
1482
1483 h = qlt_make_handle(vha);
1484 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1485 /*
1486 * CTIO type 7 from the firmware doesn't provide a way to
1487 * know the initiator's LOOP ID, hence we can't find
1488 * the session and, so, the command.
1489 */
1490 return -EAGAIN;
1491 } else
1492 ha->tgt.cmds[h-1] = prm->cmd;
1493
1494 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1495 pkt->nport_handle = prm->cmd->loop_id;
1496 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1497 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1498 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1499 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1500 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1501 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
1502 pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1503 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1504
1505 ql_dbg(ql_dbg_tgt, vha, 0xe00c,
1506 "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
1507 vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT,
1508 le16_to_cpu(pkt->u.status0.ox_id));
1509 return 0;
1510}
1511
1512/*
1513 * ha->hardware_lock supposed to be held on entry. We have already made sure
1514 * that there is sufficient amount of request entries to not drop it.
1515 */
1516static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1517 struct scsi_qla_host *vha)
1518{
1519 int cnt;
1520 uint32_t *dword_ptr;
1521 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1522
1523 /* Build continuation packets */
1524 while (prm->seg_cnt > 0) {
1525 cont_a64_entry_t *cont_pkt64 =
1526 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1527
1528 /*
1529 * Make sure that from cont_pkt64 none of
1530 * 64-bit specific fields used for 32-bit
1531 * addressing. Cast to (cont_entry_t *) for
1532 * that.
1533 */
1534
1535 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1536
1537 cont_pkt64->entry_count = 1;
1538 cont_pkt64->sys_define = 0;
1539
1540 if (enable_64bit_addressing) {
1541 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1542 dword_ptr =
1543 (uint32_t *)&cont_pkt64->dseg_0_address;
1544 } else {
1545 cont_pkt64->entry_type = CONTINUE_TYPE;
1546 dword_ptr =
1547 (uint32_t *)&((cont_entry_t *)
1548 cont_pkt64)->dseg_0_address;
1549 }
1550
1551 /* Load continuation entry data segments */
1552 for (cnt = 0;
1553 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1554 cnt++, prm->seg_cnt--) {
1555 *dword_ptr++ =
1556 cpu_to_le32(pci_dma_lo32
1557 (sg_dma_address(prm->sg)));
1558 if (enable_64bit_addressing) {
1559 *dword_ptr++ =
1560 cpu_to_le32(pci_dma_hi32
1561 (sg_dma_address
1562 (prm->sg)));
1563 }
1564 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1565
1566 ql_dbg(ql_dbg_tgt, vha, 0xe00d,
1567 "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
1568 (long long unsigned int)
1569 pci_dma_hi32(sg_dma_address(prm->sg)),
1570 (long long unsigned int)
1571 pci_dma_lo32(sg_dma_address(prm->sg)),
1572 (int)sg_dma_len(prm->sg));
1573
1574 prm->sg = sg_next(prm->sg);
1575 }
1576 }
1577}
1578
1579/*
1580 * ha->hardware_lock supposed to be held on entry. We have already made sure
1581 * that there is sufficient amount of request entries to not drop it.
1582 */
1583static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1584 struct scsi_qla_host *vha)
1585{
1586 int cnt;
1587 uint32_t *dword_ptr;
1588 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1589 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1590
1591 ql_dbg(ql_dbg_tgt, vha, 0xe00e,
1592 "iocb->scsi_status=%x, iocb->flags=%x\n",
1593 le16_to_cpu(pkt24->u.status0.scsi_status),
1594 le16_to_cpu(pkt24->u.status0.flags));
1595
1596 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1597
1598 /* Setup packet address segment pointer */
1599 dword_ptr = pkt24->u.status0.dseg_0_address;
1600
1601 /* Set total data segment count */
1602 if (prm->seg_cnt)
1603 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1604
1605 if (prm->seg_cnt == 0) {
1606 /* No data transfer */
1607 *dword_ptr++ = 0;
1608 *dword_ptr = 0;
1609 return;
1610 }
1611
1612 /* If scatter gather */
1613 ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
1614
1615 /* Load command entry data segments */
1616 for (cnt = 0;
1617 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1618 cnt++, prm->seg_cnt--) {
1619 *dword_ptr++ =
1620 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1621 if (enable_64bit_addressing) {
1622 *dword_ptr++ =
1623 cpu_to_le32(pci_dma_hi32(
1624 sg_dma_address(prm->sg)));
1625 }
1626 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1627
1628 ql_dbg(ql_dbg_tgt, vha, 0xe010,
1629 "S/G Segment phys_addr=%llx:%llx, len=%d\n",
1630 (long long unsigned int)pci_dma_hi32(sg_dma_address(
1631 prm->sg)),
1632 (long long unsigned int)pci_dma_lo32(sg_dma_address(
1633 prm->sg)),
1634 (int)sg_dma_len(prm->sg));
1635
1636 prm->sg = sg_next(prm->sg);
1637 }
1638
1639 qlt_load_cont_data_segments(prm, vha);
1640}
1641
1642static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1643{
1644 return cmd->bufflen > 0;
1645}
1646
1647/*
1648 * Called without ha->hardware_lock held
1649 */
1650static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1651 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1652 uint32_t *full_req_cnt)
1653{
1654 struct qla_tgt *tgt = cmd->tgt;
1655 struct scsi_qla_host *vha = tgt->vha;
1656 struct qla_hw_data *ha = vha->hw;
1657 struct se_cmd *se_cmd = &cmd->se_cmd;
1658
1659 if (unlikely(cmd->aborted)) {
1660 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1661 "qla_target(%d): terminating exchange "
1662 "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
1663 se_cmd, cmd->tag);
1664
1665 cmd->state = QLA_TGT_STATE_ABORTED;
1666
1667 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1668
1669 /* !! At this point cmd could be already freed !! */
1670 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1671 }
1672
1673 ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u\n",
1674 vha->vp_idx, cmd->tag);
1675
1676 prm->cmd = cmd;
1677 prm->tgt = tgt;
1678 prm->rq_result = scsi_status;
1679 prm->sense_buffer = &cmd->sense_buffer[0];
1680 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1681 prm->sg = NULL;
1682 prm->seg_cnt = -1;
1683 prm->req_cnt = 1;
1684 prm->add_status_pkt = 0;
1685
1686 ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
1687 prm->rq_result, xmit_type);
1688
1689 /* Send marker if required */
1690 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1691 return -EFAULT;
1692
1693 ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
1694
1695 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1696 if (qlt_pci_map_calc_cnt(prm) != 0)
1697 return -EAGAIN;
1698 }
1699
1700 *full_req_cnt = prm->req_cnt;
1701
1702 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1703 prm->residual = se_cmd->residual_count;
1704 ql_dbg(ql_dbg_tgt, vha, 0xe014,
1705 "Residual underflow: %d (tag %d, "
1706 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1707 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1708 cmd->bufflen, prm->rq_result);
1709 prm->rq_result |= SS_RESIDUAL_UNDER;
1710 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1711 prm->residual = se_cmd->residual_count;
1712 ql_dbg(ql_dbg_tgt, vha, 0xe015,
1713 "Residual overflow: %d (tag %d, "
1714 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1715 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1716 cmd->bufflen, prm->rq_result);
1717 prm->rq_result |= SS_RESIDUAL_OVER;
1718 }
1719
1720 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1721 /*
1722 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1723 * ignored in *xmit_response() below
1724 */
1725 if (qlt_has_data(cmd)) {
1726 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1727 (IS_FWI2_CAPABLE(ha) &&
1728 (prm->rq_result != 0))) {
1729 prm->add_status_pkt = 1;
1730 (*full_req_cnt)++;
1731 }
1732 }
1733 }
1734
1735 ql_dbg(ql_dbg_tgt, vha, 0xe016,
1736 "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
1737 prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
1738
1739 return 0;
1740}
1741
1742static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1743 struct qla_tgt_cmd *cmd, int sending_sense)
1744{
1745 if (ha->tgt.enable_class_2)
1746 return 0;
1747
1748 if (sending_sense)
1749 return cmd->conf_compl_supported;
1750 else
1751 return ha->tgt.enable_explicit_conf &&
1752 cmd->conf_compl_supported;
1753}
1754
1755#ifdef CONFIG_QLA_TGT_DEBUG_SRR
1756/*
1757 * Original taken from the XFS code
1758 */
1759static unsigned long qlt_srr_random(void)
1760{
1761 static int Inited;
1762 static unsigned long RandomValue;
1763 static DEFINE_SPINLOCK(lock);
1764 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1765 register long rv;
1766 register long lo;
1767 register long hi;
1768 unsigned long flags;
1769
1770 spin_lock_irqsave(&lock, flags);
1771 if (!Inited) {
1772 RandomValue = jiffies;
1773 Inited = 1;
1774 }
1775 rv = RandomValue;
1776 hi = rv / 127773;
1777 lo = rv % 127773;
1778 rv = 16807 * lo - 2836 * hi;
1779 if (rv <= 0)
1780 rv += 2147483647;
1781 RandomValue = rv;
1782 spin_unlock_irqrestore(&lock, flags);
1783 return rv;
1784}
1785
1786static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1787{
1788#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1789 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1790 == 50) {
1791 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1792 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1793 "Dropping cmd %p (tag %d) status", cmd, cmd->tag);
1794 }
1795#endif
1796 /*
1797 * It's currently not possible to simulate SRRs for FCP_WRITE without
1798 * a physical link layer failure, so don't even try here..
1799 */
1800 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1801 return;
1802
1803 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1804 ((qlt_srr_random() % 100) == 20)) {
1805 int i, leave = 0;
1806 unsigned int tot_len = 0;
1807
1808 while (leave == 0)
1809 leave = qlt_srr_random() % cmd->sg_cnt;
1810
1811 for (i = 0; i < leave; i++)
1812 tot_len += cmd->sg[i].length;
1813
1814 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1815 "Cutting cmd %p (tag %d) buffer"
1816 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1817 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
1818 cmd->bufflen, cmd->sg_cnt);
1819
1820 cmd->bufflen = tot_len;
1821 cmd->sg_cnt = leave;
1822 }
1823
1824 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1825 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1826
1827 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1828 "Cutting cmd %p (tag %d) buffer head "
1829 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
1830 cmd->bufflen);
1831 if (offset == 0)
1832 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1833 else if (qlt_set_data_offset(cmd, offset)) {
1834 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1835 "qlt_set_data_offset() failed (tag %d)", cmd->tag);
1836 }
1837 }
1838}
1839#else
1840static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1841{}
1842#endif
1843
1844static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1845 struct qla_tgt_prm *prm)
1846{
1847 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1848 (uint32_t)sizeof(ctio->u.status1.sense_data));
1849 ctio->u.status0.flags |=
1850 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1851 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1852 ctio->u.status0.flags |= __constant_cpu_to_le16(
1853 CTIO7_FLAGS_EXPLICIT_CONFORM |
1854 CTIO7_FLAGS_CONFORM_REQ);
1855 }
1856 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1857 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1858 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1859 int i;
1860
1861 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1862 if (prm->cmd->se_cmd.scsi_status != 0) {
1863 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1864 "Skipping EXPLICIT_CONFORM and "
1865 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1866 "non GOOD status\n");
1867 goto skip_explict_conf;
1868 }
1869 ctio->u.status1.flags |= __constant_cpu_to_le16(
1870 CTIO7_FLAGS_EXPLICIT_CONFORM |
1871 CTIO7_FLAGS_CONFORM_REQ);
1872 }
1873skip_explict_conf:
1874 ctio->u.status1.flags &=
1875 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1876 ctio->u.status1.flags |=
1877 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1878 ctio->u.status1.scsi_status |=
1879 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1880 ctio->u.status1.sense_length =
1881 cpu_to_le16(prm->sense_buffer_len);
1882 for (i = 0; i < prm->sense_buffer_len/4; i++)
1883 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1884 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1885#if 0
1886 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
1887 static int q;
1888 if (q < 10) {
1889 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
1890 "qla_target(%d): %d bytes of sense "
1891 "lost", prm->tgt->ha->vp_idx,
1892 prm->sense_buffer_len % 4);
1893 q++;
1894 }
1895 }
1896#endif
1897 } else {
1898 ctio->u.status1.flags &=
1899 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1900 ctio->u.status1.flags |=
1901 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1902 ctio->u.status1.sense_length = 0;
1903 memset(ctio->u.status1.sense_data, 0,
1904 sizeof(ctio->u.status1.sense_data));
1905 }
1906
1907 /* Sense with len > 24, is it possible ??? */
1908}
1909
1910/*
1911 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
1912 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
1913 */
1914int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
1915 uint8_t scsi_status)
1916{
1917 struct scsi_qla_host *vha = cmd->vha;
1918 struct qla_hw_data *ha = vha->hw;
1919 struct ctio7_to_24xx *pkt;
1920 struct qla_tgt_prm prm;
1921 uint32_t full_req_cnt = 0;
1922 unsigned long flags = 0;
1923 int res;
1924
1925 memset(&prm, 0, sizeof(prm));
1926 qlt_check_srr_debug(cmd, &xmit_type);
1927
1928 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
1929 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, "
1930 "cmd->dma_data_direction=%d\n", (xmit_type & QLA_TGT_XMIT_STATUS) ?
1931 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction);
1932
1933 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
1934 &full_req_cnt);
1935 if (unlikely(res != 0)) {
1936 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
1937 return 0;
1938
1939 return res;
1940 }
1941
1942 spin_lock_irqsave(&ha->hardware_lock, flags);
1943
1944 /* Does F/W have an IOCBs for this request */
1945 res = qlt_check_reserve_free_req(vha, full_req_cnt);
1946 if (unlikely(res))
1947 goto out_unmap_unlock;
1948
1949 res = qlt_24xx_build_ctio_pkt(&prm, vha);
1950 if (unlikely(res != 0))
1951 goto out_unmap_unlock;
1952
1953
1954 pkt = (struct ctio7_to_24xx *)prm.pkt;
1955
1956 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
1957 pkt->u.status0.flags |=
1958 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
1959 CTIO7_FLAGS_STATUS_MODE_0);
1960
1961 qlt_load_data_segments(&prm, vha);
1962
1963 if (prm.add_status_pkt == 0) {
1964 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1965 pkt->u.status0.scsi_status =
1966 cpu_to_le16(prm.rq_result);
1967 pkt->u.status0.residual =
1968 cpu_to_le32(prm.residual);
1969 pkt->u.status0.flags |= __constant_cpu_to_le16(
1970 CTIO7_FLAGS_SEND_STATUS);
1971 if (qlt_need_explicit_conf(ha, cmd, 0)) {
1972 pkt->u.status0.flags |=
1973 __constant_cpu_to_le16(
1974 CTIO7_FLAGS_EXPLICIT_CONFORM |
1975 CTIO7_FLAGS_CONFORM_REQ);
1976 }
1977 }
1978
1979 } else {
1980 /*
1981 * We have already made sure that there is sufficient
1982 * amount of request entries to not drop HW lock in
1983 * req_pkt().
1984 */
1985 struct ctio7_to_24xx *ctio =
1986 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
1987
1988 ql_dbg(ql_dbg_tgt, vha, 0xe019,
1989 "Building additional status packet\n");
1990
1991 memcpy(ctio, pkt, sizeof(*ctio));
1992 ctio->entry_count = 1;
1993 ctio->dseg_count = 0;
1994 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
1995 CTIO7_FLAGS_DATA_IN);
1996
1997 /* Real finish is ctio_m1's finish */
1998 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
1999 pkt->u.status0.flags |= __constant_cpu_to_le16(
2000 CTIO7_FLAGS_DONT_RET_CTIO);
2001 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2002 &prm);
2003 pr_debug("Status CTIO7: %p\n", ctio);
2004 }
2005 } else
2006 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2007
2008
2009 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
2010
2011 ql_dbg(ql_dbg_tgt, vha, 0xe01a,
2012 "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
2013 pkt, scsi_status);
2014
2015 qla2x00_start_iocbs(vha, vha->req);
2016 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2017
2018 return 0;
2019
2020out_unmap_unlock:
2021 if (cmd->sg_mapped)
2022 qlt_unmap_sg(vha, cmd);
2023 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2024
2025 return res;
2026}
2027EXPORT_SYMBOL(qlt_xmit_response);
2028
2029int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2030{
2031 struct ctio7_to_24xx *pkt;
2032 struct scsi_qla_host *vha = cmd->vha;
2033 struct qla_hw_data *ha = vha->hw;
2034 struct qla_tgt *tgt = cmd->tgt;
2035 struct qla_tgt_prm prm;
2036 unsigned long flags;
2037 int res = 0;
2038
2039 memset(&prm, 0, sizeof(prm));
2040 prm.cmd = cmd;
2041 prm.tgt = tgt;
2042 prm.sg = NULL;
2043 prm.req_cnt = 1;
2044
2045 /* Send marker if required */
2046 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2047 return -EIO;
2048
2049 ql_dbg(ql_dbg_tgt, vha, 0xe01b, "CTIO_start: vha(%d)",
2050 (int)vha->vp_idx);
2051
2052 /* Calculate number of entries and segments required */
2053 if (qlt_pci_map_calc_cnt(&prm) != 0)
2054 return -EAGAIN;
2055
2056 spin_lock_irqsave(&ha->hardware_lock, flags);
2057
2058 /* Does F/W have an IOCBs for this request */
2059 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2060 if (res != 0)
2061 goto out_unlock_free_unmap;
2062
2063 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2064 if (unlikely(res != 0))
2065 goto out_unlock_free_unmap;
2066 pkt = (struct ctio7_to_24xx *)prm.pkt;
2067 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2068 CTIO7_FLAGS_STATUS_MODE_0);
2069 qlt_load_data_segments(&prm, vha);
2070
2071 cmd->state = QLA_TGT_STATE_NEED_DATA;
2072
2073 qla2x00_start_iocbs(vha, vha->req);
2074 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2075
2076 return res;
2077
2078out_unlock_free_unmap:
2079 if (cmd->sg_mapped)
2080 qlt_unmap_sg(vha, cmd);
2081 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2082
2083 return res;
2084}
2085EXPORT_SYMBOL(qlt_rdy_to_xfer);
2086
2087/* If hardware_lock held on entry, might drop it, then reaquire */
2088/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2089static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2090 struct qla_tgt_cmd *cmd,
2091 struct atio_from_isp *atio)
2092{
2093 struct ctio7_to_24xx *ctio24;
2094 struct qla_hw_data *ha = vha->hw;
2095 request_t *pkt;
2096 int ret = 0;
2097
2098 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2099
2100 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
2101 if (pkt == NULL) {
2102 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2103 "qla_target(%d): %s failed: unable to allocate "
2104 "request packet\n", vha->vp_idx, __func__);
2105 return -ENOMEM;
2106 }
2107
2108 if (cmd != NULL) {
2109 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2110 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2111 "qla_target(%d): Terminating cmd %p with "
2112 "incorrect state %d\n", vha->vp_idx, cmd,
2113 cmd->state);
2114 } else
2115 ret = 1;
2116 }
2117
2118 pkt->entry_count = 1;
2119 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2120
2121 ctio24 = (struct ctio7_to_24xx *)pkt;
2122 ctio24->entry_type = CTIO_TYPE7;
2123 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2124 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2125 ctio24->vp_index = vha->vp_idx;
2126 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2127 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2128 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2129 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2130 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2131 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2132 CTIO7_FLAGS_TERMINATE);
2133 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
2134
2135 /* Most likely, it isn't needed */
2136 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2137 &atio->u.isp24.fcp_cmnd.add_cdb[
2138 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2139 if (ctio24->u.status1.residual != 0)
2140 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2141
2142 qla2x00_start_iocbs(vha, vha->req);
2143 return ret;
2144}
2145
2146static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2147 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2148{
2149 unsigned long flags;
2150 int rc;
2151
2152 if (qlt_issue_marker(vha, ha_locked) < 0)
2153 return;
2154
2155 if (ha_locked) {
2156 rc = __qlt_send_term_exchange(vha, cmd, atio);
2157 goto done;
2158 }
2159 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2160 rc = __qlt_send_term_exchange(vha, cmd, atio);
2161 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2162done:
2163 if (rc == 1) {
2164 if (!ha_locked && !in_interrupt())
2165 msleep(250); /* just in case */
2166
2167 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2168 }
2169}
2170
2171void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2172{
2173 BUG_ON(cmd->sg_mapped);
2174
2175 if (unlikely(cmd->free_sg))
2176 kfree(cmd->sg);
2177 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2178}
2179EXPORT_SYMBOL(qlt_free_cmd);
2180
2181/* ha->hardware_lock supposed to be held on entry */
2182static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2183 struct qla_tgt_cmd *cmd, void *ctio)
2184{
2185 struct qla_tgt_srr_ctio *sc;
2186 struct qla_hw_data *ha = vha->hw;
2187 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2188 struct qla_tgt_srr_imm *imm;
2189
2190 tgt->ctio_srr_id++;
2191
2192 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2193 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2194
2195 if (!ctio) {
2196 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2197 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2198 vha->vp_idx);
2199 return -EINVAL;
2200 }
2201
2202 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2203 if (sc != NULL) {
2204 sc->cmd = cmd;
2205 /* IRQ is already OFF */
2206 spin_lock(&tgt->srr_lock);
2207 sc->srr_id = tgt->ctio_srr_id;
2208 list_add_tail(&sc->srr_list_entry,
2209 &tgt->srr_ctio_list);
2210 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2211 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2212 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2213 int found = 0;
2214 list_for_each_entry(imm, &tgt->srr_imm_list,
2215 srr_list_entry) {
2216 if (imm->srr_id == sc->srr_id) {
2217 found = 1;
2218 break;
2219 }
2220 }
2221 if (found) {
2222 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2223 "Scheduling srr work\n");
2224 schedule_work(&tgt->srr_work);
2225 } else {
2226 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2227 "qla_target(%d): imm_srr_id "
2228 "== ctio_srr_id (%d), but there is no "
2229 "corresponding SRR IMM, deleting CTIO "
2230 "SRR %p\n", vha->vp_idx,
2231 tgt->ctio_srr_id, sc);
2232 list_del(&sc->srr_list_entry);
2233 spin_unlock(&tgt->srr_lock);
2234
2235 kfree(sc);
2236 return -EINVAL;
2237 }
2238 }
2239 spin_unlock(&tgt->srr_lock);
2240 } else {
2241 struct qla_tgt_srr_imm *ti;
2242
2243 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2244 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2245 vha->vp_idx);
2246 spin_lock(&tgt->srr_lock);
2247 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2248 srr_list_entry) {
2249 if (imm->srr_id == tgt->ctio_srr_id) {
2250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2251 "IMM SRR %p deleted (id %d)\n",
2252 imm, imm->srr_id);
2253 list_del(&imm->srr_list_entry);
2254 qlt_reject_free_srr_imm(vha, imm, 1);
2255 }
2256 }
2257 spin_unlock(&tgt->srr_lock);
2258
2259 return -ENOMEM;
2260 }
2261
2262 return 0;
2263}
2264
2265/*
2266 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2267 */
2268static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2269 struct qla_tgt_cmd *cmd, uint32_t status)
2270{
2271 int term = 0;
2272
2273 if (ctio != NULL) {
2274 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2275 term = !(c->flags &
2276 __constant_cpu_to_le16(OF_TERM_EXCH));
2277 } else
2278 term = 1;
2279
2280 if (term)
2281 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2282
2283 return term;
2284}
2285
2286/* ha->hardware_lock supposed to be held on entry */
2287static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2288 uint32_t handle)
2289{
2290 struct qla_hw_data *ha = vha->hw;
2291
2292 handle--;
2293 if (ha->tgt.cmds[handle] != NULL) {
2294 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2295 ha->tgt.cmds[handle] = NULL;
2296 return cmd;
2297 } else
2298 return NULL;
2299}
2300
2301/* ha->hardware_lock supposed to be held on entry */
2302static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2303 uint32_t handle, void *ctio)
2304{
2305 struct qla_tgt_cmd *cmd = NULL;
2306
2307 /* Clear out internal marks */
2308 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2309 CTIO_INTERMEDIATE_HANDLE_MARK);
2310
2311 if (handle != QLA_TGT_NULL_HANDLE) {
2312 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
2313 ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
2314 "SKIP_HANDLE CTIO\n");
2315 return NULL;
2316 }
2317 /* handle-1 is actually used */
8d93f550 2318 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 2319 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2320 "qla_target(%d): Wrong handle %x received\n",
2321 vha->vp_idx, handle);
2322 return NULL;
2323 }
2324 cmd = qlt_get_cmd(vha, handle);
2325 if (unlikely(cmd == NULL)) {
2326 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2327 "qla_target(%d): Suspicious: unable to "
2328 "find the command with handle %x\n", vha->vp_idx,
2329 handle);
2330 return NULL;
2331 }
2332 } else if (ctio != NULL) {
2333 /* We can't get loop ID from CTIO7 */
2334 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2335 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2336 "support NULL handles\n", vha->vp_idx);
2337 return NULL;
2338 }
2339
2340 return cmd;
2341}
2342
2343/*
2344 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2345 */
2346static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2347 uint32_t status, void *ctio)
2348{
2349 struct qla_hw_data *ha = vha->hw;
2350 struct se_cmd *se_cmd;
2351 struct target_core_fabric_ops *tfo;
2352 struct qla_tgt_cmd *cmd;
2353
2354 ql_dbg(ql_dbg_tgt, vha, 0xe01e,
2355 "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
2356 vha->vp_idx, ctio, status, handle);
2357
2358 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2359 /* That could happen only in case of an error/reset/abort */
2360 if (status != CTIO_SUCCESS) {
2361 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2362 "Intermediate CTIO received"
2363 " (status %x)\n", status);
2364 }
2365 return;
2366 }
2367
2368 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 2369 if (cmd == NULL)
2d70c103 2370 return;
092e1dc3 2371
2d70c103
NB		 2372 se_cmd = &cmd->se_cmd;
2373 tfo = se_cmd->se_tfo;
2374
2375 if (cmd->sg_mapped)
2376 qlt_unmap_sg(vha, cmd);
2377
2378 if (unlikely(status != CTIO_SUCCESS)) {
2379 switch (status & 0xFFFF) {
2380 case CTIO_LIP_RESET:
2381 case CTIO_TARGET_RESET:
2382 case CTIO_ABORTED:
2383 case CTIO_TIMEOUT:
2384 case CTIO_INVALID_RX_ID:
2385 /* They are OK */
2386 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
2387 "qla_target(%d): CTIO with "
2388 "status %#x received, state %x, se_cmd %p, "
2389 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
2390 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
2391 status, cmd->state, se_cmd);
2392 break;
2393
2394 case CTIO_PORT_LOGGED_OUT:
2395 case CTIO_PORT_UNAVAILABLE:
2396 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
2397 "qla_target(%d): CTIO with PORT LOGGED "
2398 "OUT (29) or PORT UNAVAILABLE (28) status %x "
2399 "received (state %x, se_cmd %p)\n", vha->vp_idx,
2400 status, cmd->state, se_cmd);
2401 break;
2402
2403 case CTIO_SRR_RECEIVED:
2404 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
2405 "qla_target(%d): CTIO with SRR_RECEIVED"
2406 " status %x received (state %x, se_cmd %p)\n",
2407 vha->vp_idx, status, cmd->state, se_cmd);
2408 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
2409 break;
2410 else
2411 return;
2412
2413 default:
2414 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
2415 "qla_target(%d): CTIO with error status "
2416 "0x%x received (state %x, se_cmd %p\n",
2417 vha->vp_idx, status, cmd->state, se_cmd);
2418 break;
2419 }
2420
2421 if (cmd->state != QLA_TGT_STATE_NEED_DATA)
2422 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
2423 return;
2424 }
2425
2426 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
2427 ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
2428 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2429 int rx_status = 0;
2430
2431 cmd->state = QLA_TGT_STATE_DATA_IN;
2432
2433 if (unlikely(status != CTIO_SUCCESS))
2434 rx_status = -EIO;
2435 else
2436 cmd->write_data_transferred = 1;
2437
2438 ql_dbg(ql_dbg_tgt, vha, 0xe020,
2439 "Data received, context %x, rx_status %d\n",
2440 0x0, rx_status);
2441
2442 ha->tgt.tgt_ops->handle_data(cmd);
2443 return;
2444 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
2445 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
2446 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
2447 } else {
2448 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
2449 "qla_target(%d): A command in state (%d) should "
2450 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
2451 }
2452
2453 if (unlikely(status != CTIO_SUCCESS)) {
2454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
2455 dump_stack();
2456 }
2457
2458 ha->tgt.tgt_ops->free_cmd(cmd);
2459}
2460
2d70c103
NB		 2461static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
2462 uint8_t task_codes)
2463{
2464 int fcp_task_attr;
2465
2466 switch (task_codes) {
2467 case ATIO_SIMPLE_QUEUE:
2468 fcp_task_attr = MSG_SIMPLE_TAG;
2469 break;
2470 case ATIO_HEAD_OF_QUEUE:
2471 fcp_task_attr = MSG_HEAD_TAG;
2472 break;
2473 case ATIO_ORDERED_QUEUE:
2474 fcp_task_attr = MSG_ORDERED_TAG;
2475 break;
2476 case ATIO_ACA_QUEUE:
2477 fcp_task_attr = MSG_ACA_TAG;
2478 break;
2479 case ATIO_UNTAGGED:
2480 fcp_task_attr = MSG_SIMPLE_TAG;
2481 break;
2482 default:
2483 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
2484 "qla_target: unknown task code %x, use ORDERED instead\n",
2485 task_codes);
2486 fcp_task_attr = MSG_ORDERED_TAG;
2487 break;
2488 }
2489
2490 return fcp_task_attr;
2491}
2492
2493static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
2494 uint8_t *);
2495/*
2496 * Process context for I/O path into tcm_qla2xxx code
2497 */
2498static void qlt_do_work(struct work_struct *work)
2499{
2500 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
2501 scsi_qla_host_t *vha = cmd->vha;
2502 struct qla_hw_data *ha = vha->hw;
2503 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2504 struct qla_tgt_sess *sess = NULL;
2505 struct atio_from_isp *atio = &cmd->atio;
2506 unsigned char *cdb;
2507 unsigned long flags;
2508 uint32_t data_length;
2509 int ret, fcp_task_attr, data_dir, bidi = 0;
2510
2511 if (tgt->tgt_stop)
2512 goto out_term;
2513
2514 spin_lock_irqsave(&ha->hardware_lock, flags);
2515 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
2516 atio->u.isp24.fcp_hdr.s_id);
e1013f14
RD		 2517 /* Do kref_get() before dropping qla_hw_data->hardware_lock. */
2518 if (sess)
2519 kref_get(&sess->se_sess->sess_kref);
2d70c103
NB		 2520 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2521
2522 if (unlikely(!sess)) {
2523 uint8_t *s_id = atio->u.isp24.fcp_hdr.s_id;
2524
2525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
2526 "qla_target(%d): Unable to find wwn login"
2527 " (s_id %x:%x:%x), trying to create it manually\n",
2528 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
2529
2530 if (atio->u.raw.entry_count > 1) {
2531 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
2532 "Dropping multy entry cmd %p\n", cmd);
2533 goto out_term;
2534 }
2535
2536 mutex_lock(&ha->tgt.tgt_mutex);
2537 sess = qlt_make_local_sess(vha, s_id);
2538 /* sess has an extra creation ref. */
2539 mutex_unlock(&ha->tgt.tgt_mutex);
2540
2541 if (!sess)
2542 goto out_term;
2543 }
2544
2545 cmd->sess = sess;
2546 cmd->loop_id = sess->loop_id;
2547 cmd->conf_compl_supported = sess->conf_compl_supported;
2548
2549 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
2550 cmd->tag = atio->u.isp24.exchange_addr;
2551 cmd->unpacked_lun = scsilun_to_int(
2552 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
2553
2554 if (atio->u.isp24.fcp_cmnd.rddata &&
2555 atio->u.isp24.fcp_cmnd.wrdata) {
2556 bidi = 1;
2557 data_dir = DMA_TO_DEVICE;
2558 } else if (atio->u.isp24.fcp_cmnd.rddata)
2559 data_dir = DMA_FROM_DEVICE;
2560 else if (atio->u.isp24.fcp_cmnd.wrdata)
2561 data_dir = DMA_TO_DEVICE;
2562 else
2563 data_dir = DMA_NONE;
2564
2565 fcp_task_attr = qlt_get_fcp_task_attr(vha,
2566 atio->u.isp24.fcp_cmnd.task_attr);
2567 data_length = be32_to_cpu(get_unaligned((uint32_t *)
2568 &atio->u.isp24.fcp_cmnd.add_cdb[
2569 atio->u.isp24.fcp_cmnd.add_cdb_len]));
2570
2571 ql_dbg(ql_dbg_tgt, vha, 0xe022,
2572 "qla_target: START qla command: %p lun: 0x%04x (tag %d)\n",
2573 cmd, cmd->unpacked_lun, cmd->tag);
2574
2575 ret = vha->hw->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
2576 fcp_task_attr, data_dir, bidi);
2577 if (ret != 0)
2578 goto out_term;
2579 /*
2580 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
2581 */
08234e3a 2582 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 2583 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 2584 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 2585 return;
2586
2587out_term:
2588 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
2589 /*
fae9eaf8
RD		 2590 * cmd has not sent to target yet, so pass NULL as the second
2591 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103
NB		 2592 */
2593 spin_lock_irqsave(&ha->hardware_lock, flags);
2594 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
fae9eaf8 2595 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2d70c103
NB		 2596 if (sess)
2597 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 2598 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 2599}
2600
2601/* ha->hardware_lock supposed to be held on entry */
2602static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
2603 struct atio_from_isp *atio)
2604{
2605 struct qla_hw_data *ha = vha->hw;
2606 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2607 struct qla_tgt_cmd *cmd;
2608
2609 if (unlikely(tgt->tgt_stop)) {
2610 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
2611 "New command while device %p is shutting down\n", tgt);
2612 return -EFAULT;
2613 }
2614
2615 cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC);
2616 if (!cmd) {
2617 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
2618 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
2619 return -ENOMEM;
2620 }
2621
2622 INIT_LIST_HEAD(&cmd->cmd_list);
2623
2624 memcpy(&cmd->atio, atio, sizeof(*atio));
2625 cmd->state = QLA_TGT_STATE_NEW;
2626 cmd->tgt = ha->tgt.qla_tgt;
2627 cmd->vha = vha;
2628
2629 INIT_WORK(&cmd->work, qlt_do_work);
2630 queue_work(qla_tgt_wq, &cmd->work);
2631 return 0;
2632
2633}
2634
2635/* ha->hardware_lock supposed to be held on entry */
2636static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
2637 int fn, void *iocb, int flags)
2638{
2639 struct scsi_qla_host *vha = sess->vha;
2640 struct qla_hw_data *ha = vha->hw;
2641 struct qla_tgt_mgmt_cmd *mcmd;
2642 int res;
2643 uint8_t tmr_func;
2644
2645 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2646 if (!mcmd) {
2647 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
2648 "qla_target(%d): Allocation of management "
2649 "command failed, some commands and their data could "
2650 "leak\n", vha->vp_idx);
2651 return -ENOMEM;
2652 }
2653 memset(mcmd, 0, sizeof(*mcmd));
2654 mcmd->sess = sess;
2655
2656 if (iocb) {
2657 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
2658 sizeof(mcmd->orig_iocb.imm_ntfy));
2659 }
2660 mcmd->tmr_func = fn;
2661 mcmd->flags = flags;
2662
2663 switch (fn) {
2664 case QLA_TGT_CLEAR_ACA:
2665 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
2666 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
2667 tmr_func = TMR_CLEAR_ACA;
2668 break;
2669
2670 case QLA_TGT_TARGET_RESET:
2671 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
2672 "qla_target(%d): TARGET_RESET received\n",
2673 sess->vha->vp_idx);
2674 tmr_func = TMR_TARGET_WARM_RESET;
2675 break;
2676
2677 case QLA_TGT_LUN_RESET:
2678 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
2679 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
2680 tmr_func = TMR_LUN_RESET;
2681 break;
2682
2683 case QLA_TGT_CLEAR_TS:
2684 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
2685 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
2686 tmr_func = TMR_CLEAR_TASK_SET;
2687 break;
2688
2689 case QLA_TGT_ABORT_TS:
2690 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
2691 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
2692 tmr_func = TMR_ABORT_TASK_SET;
2693 break;
2694#if 0
2695 case QLA_TGT_ABORT_ALL:
2696 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
2697 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
2698 sess->vha->vp_idx);
2699 tmr_func = 0;
2700 break;
2701
2702 case QLA_TGT_ABORT_ALL_SESS:
2703 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
2704 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
2705 sess->vha->vp_idx);
2706 tmr_func = 0;
2707 break;
2708
2709 case QLA_TGT_NEXUS_LOSS_SESS:
2710 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
2711 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
2712 sess->vha->vp_idx);
2713 tmr_func = 0;
2714 break;
2715
2716 case QLA_TGT_NEXUS_LOSS:
2717 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
2718 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
2719 tmr_func = 0;
2720 break;
2721#endif
2722 default:
2723 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
2724 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
2725 sess->vha->vp_idx, fn);
2726 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2727 return -ENOSYS;
2728 }
2729
2730 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
2731 if (res != 0) {
2732 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
2733 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
2734 sess->vha->vp_idx, res);
2735 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2736 return -EFAULT;
2737 }
2738
2739 return 0;
2740}
2741
2742/* ha->hardware_lock supposed to be held on entry */
2743static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
2744{
2745 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2746 struct qla_hw_data *ha = vha->hw;
2747 struct qla_tgt *tgt;
2748 struct qla_tgt_sess *sess;
2749 uint32_t lun, unpacked_lun;
2750 int lun_size, fn;
2751
2752 tgt = ha->tgt.qla_tgt;
2753
2754 lun = a->u.isp24.fcp_cmnd.lun;
2755 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
2756 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
2757 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
2758 a->u.isp24.fcp_hdr.s_id);
2759 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
2760
2761 if (!sess) {
2762 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
2763 "qla_target(%d): task mgmt fn 0x%x for "
2764 "non-existant session\n", vha->vp_idx, fn);
2765 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
2766 sizeof(struct atio_from_isp));
2767 }
2768
2769 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
2770}
2771
2772/* ha->hardware_lock supposed to be held on entry */
2773static int __qlt_abort_task(struct scsi_qla_host *vha,
2774 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
2775{
2776 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2777 struct qla_hw_data *ha = vha->hw;
2778 struct qla_tgt_mgmt_cmd *mcmd;
2779 uint32_t lun, unpacked_lun;
2780 int rc;
2781
2782 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2783 if (mcmd == NULL) {
2784 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
2785 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
2786 vha->vp_idx, __func__);
2787 return -ENOMEM;
2788 }
2789 memset(mcmd, 0, sizeof(*mcmd));
2790
2791 mcmd->sess = sess;
2792 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
2793 sizeof(mcmd->orig_iocb.imm_ntfy));
2794
2795 lun = a->u.isp24.fcp_cmnd.lun;
2796 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
2797
2798 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
2799 le16_to_cpu(iocb->u.isp2x.seq_id));
2800 if (rc != 0) {
2801 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
2802 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2803 vha->vp_idx, rc);
2804 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2805 return -EFAULT;
2806 }
2807
2808 return 0;
2809}
2810
2811/* ha->hardware_lock supposed to be held on entry */
2812static int qlt_abort_task(struct scsi_qla_host *vha,
2813 struct imm_ntfy_from_isp *iocb)
2814{
2815 struct qla_hw_data *ha = vha->hw;
2816 struct qla_tgt_sess *sess;
2817 int loop_id;
2818
2819 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
2820
2821 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
2822 if (sess == NULL) {
2823 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
2824 "qla_target(%d): task abort for unexisting "
2825 "session\n", vha->vp_idx);
2826 return qlt_sched_sess_work(ha->tgt.qla_tgt,
2827 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
2828 }
2829
2830 return __qlt_abort_task(vha, iocb, sess);
2831}
2832
2833/*
2834 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2835 */
2836static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
2837 struct imm_ntfy_from_isp *iocb)
2838{
2839 struct qla_hw_data *ha = vha->hw;
2840 int res = 0;
2841
2842 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
2843 "qla_target(%d): Port ID: 0x%02x:%02x:%02x"
2844 " ELS opcode: 0x%02x\n", vha->vp_idx, iocb->u.isp24.port_id[0],
2845 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[2],
2846 iocb->u.isp24.status_subcode);
2847
2848 switch (iocb->u.isp24.status_subcode) {
2849 case ELS_PLOGI:
2850 case ELS_FLOGI:
2851 case ELS_PRLI:
2852 case ELS_LOGO:
2853 case ELS_PRLO:
2854 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
2855 break;
2856 case ELS_PDISC:
2857 case ELS_ADISC:
2858 {
2859 struct qla_tgt *tgt = ha->tgt.qla_tgt;
2860 if (tgt->link_reinit_iocb_pending) {
2861 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
2862 0, 0, 0, 0, 0, 0);
2863 tgt->link_reinit_iocb_pending = 0;
2864 }
2865 res = 1; /* send notify ack */
2866 break;
2867 }
2868
2869 default:
2870 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
2871 "qla_target(%d): Unsupported ELS command %x "
2872 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
2873 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
2874 break;
2875 }
2876
2877 return res;
2878}
2879
2880static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
2881{
2882 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
2883 size_t first_offset = 0, rem_offset = offset, tmp = 0;
2884 int i, sg_srr_cnt, bufflen = 0;
2885
2886 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
2887 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
2888 "cmd->sg_cnt: %u, direction: %d\n",
2889 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
2890
2891 /*
2892 * FIXME: Reject non zero SRR relative offset until we can test
2893 * this code properly.
2894 */
2895 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
2896 return -1;
2897
2898 if (!cmd->sg || !cmd->sg_cnt) {
2899 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
2900 "Missing cmd->sg or zero cmd->sg_cnt in"
2901 " qla_tgt_set_data_offset\n");
2902 return -EINVAL;
2903 }
2904 /*
2905 * Walk the current cmd->sg list until we locate the new sg_srr_start
2906 */
2907 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
2908 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
2909 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
2910 i, sg, sg_page(sg), sg->length, sg->offset);
2911
2912 if ((sg->length + tmp) > offset) {
2913 first_offset = rem_offset;
2914 sg_srr_start = sg;
2915 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
2916 "Found matching sg[%d], using %p as sg_srr_start, "
2917 "and using first_offset: %zu\n", i, sg,
2918 first_offset);
2919 break;
2920 }
2921 tmp += sg->length;
2922 rem_offset -= sg->length;
2923 }
2924
2925 if (!sg_srr_start) {
2926 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
2927 "Unable to locate sg_srr_start for offset: %u\n", offset);
2928 return -EINVAL;
2929 }
2930 sg_srr_cnt = (cmd->sg_cnt - i);
2931
2932 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
2933 if (!sg_srr) {
2934 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
2935 "Unable to allocate sgp\n");
2936 return -ENOMEM;
2937 }
2938 sg_init_table(sg_srr, sg_srr_cnt);
2939 sgp = &sg_srr[0];
2940 /*
2941 * Walk the remaining list for sg_srr_start, mapping to the newly
2942 * allocated sg_srr taking first_offset into account.
2943 */
2944 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
2945 if (first_offset) {
2946 sg_set_page(sgp, sg_page(sg),
2947 (sg->length - first_offset), first_offset);
2948 first_offset = 0;
2949 } else {
2950 sg_set_page(sgp, sg_page(sg), sg->length, 0);
2951 }
2952 bufflen += sgp->length;
2953
2954 sgp = sg_next(sgp);
2955 if (!sgp)
2956 break;
2957 }
2958
2959 cmd->sg = sg_srr;
2960 cmd->sg_cnt = sg_srr_cnt;
2961 cmd->bufflen = bufflen;
2962 cmd->offset += offset;
2963 cmd->free_sg = 1;
2964
2965 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
2966 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
2967 cmd->sg_cnt);
2968 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
2969 cmd->bufflen);
2970 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
2971 cmd->offset);
2972
2973 if (cmd->sg_cnt < 0)
2974 BUG();
2975
2976 if (cmd->bufflen < 0)
2977 BUG();
2978
2979 return 0;
2980}
2981
2982static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
2983 uint32_t srr_rel_offs, int *xmit_type)
2984{
2985 int res = 0, rel_offs;
2986
2987 rel_offs = srr_rel_offs - cmd->offset;
2988 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
2989 srr_rel_offs, rel_offs);
2990
2991 *xmit_type = QLA_TGT_XMIT_ALL;
2992
2993 if (rel_offs < 0) {
2994 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
2995 "qla_target(%d): SRR rel_offs (%d) < 0",
2996 cmd->vha->vp_idx, rel_offs);
2997 res = -1;
2998 } else if (rel_offs == cmd->bufflen)
2999 *xmit_type = QLA_TGT_XMIT_STATUS;
3000 else if (rel_offs > 0)
3001 res = qlt_set_data_offset(cmd, rel_offs);
3002
3003 return res;
3004}
3005
3006/* No locks, thread context */
3007static void qlt_handle_srr(struct scsi_qla_host *vha,
3008 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
3009{
3010 struct imm_ntfy_from_isp *ntfy =
3011 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
3012 struct qla_hw_data *ha = vha->hw;
3013 struct qla_tgt_cmd *cmd = sctio->cmd;
3014 struct se_cmd *se_cmd = &cmd->se_cmd;
3015 unsigned long flags;
3016 int xmit_type = 0, resp = 0;
3017 uint32_t offset;
3018 uint16_t srr_ui;
3019
3020 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
3021 srr_ui = ntfy->u.isp24.srr_ui;
3022
3023 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3024 cmd, srr_ui);
3025
3026 switch (srr_ui) {
3027 case SRR_IU_STATUS:
3028 spin_lock_irqsave(&ha->hardware_lock, flags);
3029 qlt_send_notify_ack(vha, ntfy,
3030 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3031 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3032 xmit_type = QLA_TGT_XMIT_STATUS;
3033 resp = 1;
3034 break;
3035 case SRR_IU_DATA_IN:
3036 if (!cmd->sg || !cmd->sg_cnt) {
3037 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3038 "Unable to process SRR_IU_DATA_IN due to"
3039 " missing cmd->sg, state: %d\n", cmd->state);
3040 dump_stack();
3041 goto out_reject;
3042 }
3043 if (se_cmd->scsi_status != 0) {
3044 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3045 "Rejecting SRR_IU_DATA_IN with non GOOD "
3046 "scsi_status\n");
3047 goto out_reject;
3048 }
3049 cmd->bufflen = se_cmd->data_length;
3050
3051 if (qlt_has_data(cmd)) {
3052 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3053 goto out_reject;
3054 spin_lock_irqsave(&ha->hardware_lock, flags);
3055 qlt_send_notify_ack(vha, ntfy,
3056 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3057 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3058 resp = 1;
3059 } else {
3060 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3061 "qla_target(%d): SRR for in data for cmd "
3062 "without them (tag %d, SCSI status %d), "
3063 "reject", vha->vp_idx, cmd->tag,
3064 cmd->se_cmd.scsi_status);
3065 goto out_reject;
3066 }
3067 break;
3068 case SRR_IU_DATA_OUT:
3069 if (!cmd->sg || !cmd->sg_cnt) {
3070 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3071 "Unable to process SRR_IU_DATA_OUT due to"
3072 " missing cmd->sg\n");
3073 dump_stack();
3074 goto out_reject;
3075 }
3076 if (se_cmd->scsi_status != 0) {
3077 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3078 "Rejecting SRR_IU_DATA_OUT"
3079 " with non GOOD scsi_status\n");
3080 goto out_reject;
3081 }
3082 cmd->bufflen = se_cmd->data_length;
3083
3084 if (qlt_has_data(cmd)) {
3085 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3086 goto out_reject;
3087 spin_lock_irqsave(&ha->hardware_lock, flags);
3088 qlt_send_notify_ack(vha, ntfy,
3089 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3090 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3091 if (xmit_type & QLA_TGT_XMIT_DATA)
3092 qlt_rdy_to_xfer(cmd);
3093 } else {
3094 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3095 "qla_target(%d): SRR for out data for cmd "
3096 "without them (tag %d, SCSI status %d), "
3097 "reject", vha->vp_idx, cmd->tag,
3098 cmd->se_cmd.scsi_status);
3099 goto out_reject;
3100 }
3101 break;
3102 default:
3103 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3104 "qla_target(%d): Unknown srr_ui value %x",
3105 vha->vp_idx, srr_ui);
3106 goto out_reject;
3107 }
3108
3109 /* Transmit response in case of status and data-in cases */
3110 if (resp)
3111 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3112
3113 return;
3114
3115out_reject:
3116 spin_lock_irqsave(&ha->hardware_lock, flags);
3117 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3118 NOTIFY_ACK_SRR_FLAGS_REJECT,
3119 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3120 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3121 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3122 cmd->state = QLA_TGT_STATE_DATA_IN;
3123 dump_stack();
3124 } else
3125 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3126 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3127}
3128
3129static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3130 struct qla_tgt_srr_imm *imm, int ha_locked)
3131{
3132 struct qla_hw_data *ha = vha->hw;
3133 unsigned long flags = 0;
3134
3135 if (!ha_locked)
3136 spin_lock_irqsave(&ha->hardware_lock, flags);
3137
3138 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3139 NOTIFY_ACK_SRR_FLAGS_REJECT,
3140 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3141 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3142
3143 if (!ha_locked)
3144 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3145
3146 kfree(imm);
3147}
3148
3149static void qlt_handle_srr_work(struct work_struct *work)
3150{
3151 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3152 struct scsi_qla_host *vha = tgt->vha;
3153 struct qla_tgt_srr_ctio *sctio;
3154 unsigned long flags;
3155
3156 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3157 tgt);
3158
3159restart:
3160 spin_lock_irqsave(&tgt->srr_lock, flags);
3161 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3162 struct qla_tgt_srr_imm *imm, *i, *ti;
3163 struct qla_tgt_cmd *cmd;
3164 struct se_cmd *se_cmd;
3165
3166 imm = NULL;
3167 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3168 srr_list_entry) {
3169 if (i->srr_id == sctio->srr_id) {
3170 list_del(&i->srr_list_entry);
3171 if (imm) {
3172 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3173 "qla_target(%d): There must be "
3174 "only one IMM SRR per CTIO SRR "
3175 "(IMM SRR %p, id %d, CTIO %p\n",
3176 vha->vp_idx, i, i->srr_id, sctio);
3177 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3178 } else
3179 imm = i;
3180 }
3181 }
3182
3183 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3184 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3185 sctio->srr_id);
3186
3187 if (imm == NULL) {
3188 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3189 "Not found matching IMM for SRR CTIO (id %d)\n",
3190 sctio->srr_id);
3191 continue;
3192 } else
3193 list_del(&sctio->srr_list_entry);
3194
3195 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3196
3197 cmd = sctio->cmd;
3198 /*
3199 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3200 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3201 * logic..
3202 */
3203 cmd->offset = 0;
3204 if (cmd->free_sg) {
3205 kfree(cmd->sg);
3206 cmd->sg = NULL;
3207 cmd->free_sg = 0;
3208 }
3209 se_cmd = &cmd->se_cmd;
3210
3211 cmd->sg_cnt = se_cmd->t_data_nents;
3212 cmd->sg = se_cmd->t_data_sg;
3213
3214 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3215 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3216 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
3217 se_cmd->t_task_cdb[0], cmd->sg_cnt, cmd->offset);
3218
3219 qlt_handle_srr(vha, sctio, imm);
3220
3221 kfree(imm);
3222 kfree(sctio);
3223 goto restart;
3224 }
3225 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3226}
3227
3228/* ha->hardware_lock supposed to be held on entry */
3229static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3230 struct imm_ntfy_from_isp *iocb)
3231{
3232 struct qla_tgt_srr_imm *imm;
3233 struct qla_hw_data *ha = vha->hw;
3234 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3235 struct qla_tgt_srr_ctio *sctio;
3236
3237 tgt->imm_srr_id++;
3238
3239 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
3240 vha->vp_idx);
3241
3242 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
3243 if (imm != NULL) {
3244 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
3245
3246 /* IRQ is already OFF */
3247 spin_lock(&tgt->srr_lock);
3248 imm->srr_id = tgt->imm_srr_id;
3249 list_add_tail(&imm->srr_list_entry,
3250 &tgt->srr_imm_list);
3251 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
3252 "IMM NTFY SRR %p added (id %d, ui %x)\n",
3253 imm, imm->srr_id, iocb->u.isp24.srr_ui);
3254 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3255 int found = 0;
3256 list_for_each_entry(sctio, &tgt->srr_ctio_list,
3257 srr_list_entry) {
3258 if (sctio->srr_id == imm->srr_id) {
3259 found = 1;
3260 break;
3261 }
3262 }
3263 if (found) {
3264 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
3265 "Scheduling srr work\n");
3266 schedule_work(&tgt->srr_work);
3267 } else {
3268 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
3269 "qla_target(%d): imm_srr_id "
3270 "== ctio_srr_id (%d), but there is no "
3271 "corresponding SRR CTIO, deleting IMM "
3272 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
3273 imm);
3274 list_del(&imm->srr_list_entry);
3275
3276 kfree(imm);
3277
3278 spin_unlock(&tgt->srr_lock);
3279 goto out_reject;
3280 }
3281 }
3282 spin_unlock(&tgt->srr_lock);
3283 } else {
3284 struct qla_tgt_srr_ctio *ts;
3285
3286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
3287 "qla_target(%d): Unable to allocate SRR IMM "
3288 "entry, SRR request will be rejected\n", vha->vp_idx);
3289
3290 /* IRQ is already OFF */
3291 spin_lock(&tgt->srr_lock);
3292 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
3293 srr_list_entry) {
3294 if (sctio->srr_id == tgt->imm_srr_id) {
3295 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
3296 "CTIO SRR %p deleted (id %d)\n",
3297 sctio, sctio->srr_id);
3298 list_del(&sctio->srr_list_entry);
3299 qlt_send_term_exchange(vha, sctio->cmd,
3300 &sctio->cmd->atio, 1);
3301 kfree(sctio);
3302 }
3303 }
3304 spin_unlock(&tgt->srr_lock);
3305 goto out_reject;
3306 }
3307
3308 return;
3309
3310out_reject:
3311 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
3312 NOTIFY_ACK_SRR_FLAGS_REJECT,
3313 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3314 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3315}
3316
3317/*
3318 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3319 */
3320static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
3321 struct imm_ntfy_from_isp *iocb)
3322{
3323 struct qla_hw_data *ha = vha->hw;
3324 uint32_t add_flags = 0;
3325 int send_notify_ack = 1;
3326 uint16_t status;
3327
3328 status = le16_to_cpu(iocb->u.isp2x.status);
3329 switch (status) {
3330 case IMM_NTFY_LIP_RESET:
3331 {
3332 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
3333 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
3334 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
3335 iocb->u.isp24.status_subcode);
3336
3337 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3338 send_notify_ack = 0;
3339 break;
3340 }
3341
3342 case IMM_NTFY_LIP_LINK_REINIT:
3343 {
3344 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3345 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
3346 "qla_target(%d): LINK REINIT (loop %#x, "
3347 "subcode %x)\n", vha->vp_idx,
3348 le16_to_cpu(iocb->u.isp24.nport_handle),
3349 iocb->u.isp24.status_subcode);
3350 if (tgt->link_reinit_iocb_pending) {
3351 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3352 0, 0, 0, 0, 0, 0);
3353 }
3354 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
3355 tgt->link_reinit_iocb_pending = 1;
3356 /*
3357 * QLogic requires to wait after LINK REINIT for possible
3358 * PDISC or ADISC ELS commands
3359 */
3360 send_notify_ack = 0;
3361 break;
3362 }
3363
3364 case IMM_NTFY_PORT_LOGOUT:
3365 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
3366 "qla_target(%d): Port logout (loop "
3367 "%#x, subcode %x)\n", vha->vp_idx,
3368 le16_to_cpu(iocb->u.isp24.nport_handle),
3369 iocb->u.isp24.status_subcode);
3370
3371 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
3372 send_notify_ack = 0;
3373 /* The sessions will be cleared in the callback, if needed */
3374 break;
3375
3376 case IMM_NTFY_GLBL_TPRLO:
3377 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
3378 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
3379 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3380 send_notify_ack = 0;
3381 /* The sessions will be cleared in the callback, if needed */
3382 break;
3383
3384 case IMM_NTFY_PORT_CONFIG:
3385 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
3386 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
3387 status);
3388 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3389 send_notify_ack = 0;
3390 /* The sessions will be cleared in the callback, if needed */
3391 break;
3392
3393 case IMM_NTFY_GLBL_LOGO:
3394 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
3395 "qla_target(%d): Link failure detected\n",
3396 vha->vp_idx);
3397 /* I_T nexus loss */
3398 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3399 send_notify_ack = 0;
3400 break;
3401
3402 case IMM_NTFY_IOCB_OVERFLOW:
3403 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
3404 "qla_target(%d): Cannot provide requested "
3405 "capability (IOCB overflowed the immediate notify "
3406 "resource count)\n", vha->vp_idx);
3407 break;
3408
3409 case IMM_NTFY_ABORT_TASK:
3410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
3411 "qla_target(%d): Abort Task (S %08x I %#x -> "
3412 "L %#x)\n", vha->vp_idx,
3413 le16_to_cpu(iocb->u.isp2x.seq_id),
3414 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
3415 le16_to_cpu(iocb->u.isp2x.lun));
3416 if (qlt_abort_task(vha, iocb) == 0)
3417 send_notify_ack = 0;
3418 break;
3419
3420 case IMM_NTFY_RESOURCE:
3421 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
3422 "qla_target(%d): Out of resources, host %ld\n",
3423 vha->vp_idx, vha->host_no);
3424 break;
3425
3426 case IMM_NTFY_MSG_RX:
3427 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
3428 "qla_target(%d): Immediate notify task %x\n",
3429 vha->vp_idx, iocb->u.isp2x.task_flags);
3430 if (qlt_handle_task_mgmt(vha, iocb) == 0)
3431 send_notify_ack = 0;
3432 break;
3433
3434 case IMM_NTFY_ELS:
3435 if (qlt_24xx_handle_els(vha, iocb) == 0)
3436 send_notify_ack = 0;
3437 break;
3438
3439 case IMM_NTFY_SRR:
3440 qlt_prepare_srr_imm(vha, iocb);
3441 send_notify_ack = 0;
3442 break;
3443
3444 default:
3445 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
3446 "qla_target(%d): Received unknown immediate "
3447 "notify status %x\n", vha->vp_idx, status);
3448 break;
3449 }
3450
3451 if (send_notify_ack)
3452 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
3453}
3454
3455/*
3456 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3457 * This function sends busy to ISP 2xxx or 24xx.
3458 */
3459static void qlt_send_busy(struct scsi_qla_host *vha,
3460 struct atio_from_isp *atio, uint16_t status)
3461{
3462 struct ctio7_to_24xx *ctio24;
3463 struct qla_hw_data *ha = vha->hw;
3464 request_t *pkt;
3465 struct qla_tgt_sess *sess = NULL;
3466
3467 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3468 atio->u.isp24.fcp_hdr.s_id);
3469 if (!sess) {
3470 qlt_send_term_exchange(vha, NULL, atio, 1);
3471 return;
3472 }
3473 /* Sending marker isn't necessary, since we called from ISR */
3474
3475 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
3476 if (!pkt) {
3477 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
3478 "qla_target(%d): %s failed: unable to allocate "
3479 "request packet", vha->vp_idx, __func__);
3480 return;
3481 }
3482
3483 pkt->entry_count = 1;
3484 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3485
3486 ctio24 = (struct ctio7_to_24xx *)pkt;
3487 ctio24->entry_type = CTIO_TYPE7;
3488 ctio24->nport_handle = sess->loop_id;
3489 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
3490 ctio24->vp_index = vha->vp_idx;
3491 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3492 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3493 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3494 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3495 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
3496 __constant_cpu_to_le16(
3497 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
3498 CTIO7_FLAGS_DONT_RET_CTIO);
3499 /*
3500 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
3501 * if the explicit conformation is used.
3502 */
3503 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
3504 ctio24->u.status1.scsi_status = cpu_to_le16(status);
3505 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3506 &atio->u.isp24.fcp_cmnd.add_cdb[
3507 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3508 if (ctio24->u.status1.residual != 0)
3509 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3510
3511 qla2x00_start_iocbs(vha, vha->req);
3512}
3513
3514/* ha->hardware_lock supposed to be held on entry */
3515/* called via callback from qla2xxx */
3516static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
3517 struct atio_from_isp *atio)
3518{
3519 struct qla_hw_data *ha = vha->hw;
3520 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3521 int rc;
3522
3523 if (unlikely(tgt == NULL)) {
3524 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
3525 "ATIO pkt, but no tgt (ha %p)", ha);
3526 return;
3527 }
3528 ql_dbg(ql_dbg_tgt, vha, 0xe02c,
3529 "qla_target(%d): ATIO pkt %p: type %02x count %02x",
3530 vha->vp_idx, atio, atio->u.raw.entry_type,
3531 atio->u.raw.entry_count);
3532 /*
3533 * In tgt_stop mode we also should allow all requests to pass.
3534 * Otherwise, some commands can stuck.
3535 */
3536
3537 tgt->irq_cmd_count++;
3538
3539 switch (atio->u.raw.entry_type) {
3540 case ATIO_TYPE7:
3541 ql_dbg(ql_dbg_tgt, vha, 0xe02d,
3542 "ATIO_TYPE7 instance %d, lun %Lx, read/write %d/%d, "
3543 "add_cdb_len %d, data_length %04x, s_id %x:%x:%x\n",
3544 vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
3545 atio->u.isp24.fcp_cmnd.rddata,
3546 atio->u.isp24.fcp_cmnd.wrdata,
3547 atio->u.isp24.fcp_cmnd.add_cdb_len,
3548 be32_to_cpu(get_unaligned((uint32_t *)
3549 &atio->u.isp24.fcp_cmnd.add_cdb[
3550 atio->u.isp24.fcp_cmnd.add_cdb_len])),
3551 atio->u.isp24.fcp_hdr.s_id[0],
3552 atio->u.isp24.fcp_hdr.s_id[1],
3553 atio->u.isp24.fcp_hdr.s_id[2]);
3554
3555 if (unlikely(atio->u.isp24.exchange_addr ==
3556 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
3557 ql_dbg(ql_dbg_tgt, vha, 0xe058,
3558 "qla_target(%d): ATIO_TYPE7 "
3559 "received with UNKNOWN exchange address, "
3560 "sending QUEUE_FULL\n", vha->vp_idx);
3561 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
3562 break;
3563 }
3564 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
3565 rc = qlt_handle_cmd_for_atio(vha, atio);
3566 else
3567 rc = qlt_handle_task_mgmt(vha, atio);
3568 if (unlikely(rc != 0)) {
3569 if (rc == -ESRCH) {
3570#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
3571 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
3572#else
3573 qlt_send_term_exchange(vha, NULL, atio, 1);
3574#endif
3575 } else {
3576 if (tgt->tgt_stop) {
3577 ql_dbg(ql_dbg_tgt, vha, 0xe059,
3578 "qla_target: Unable to send "
3579 "command to target for req, "
3580 "ignoring.\n");
3581 } else {
3582 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
3583 "qla_target(%d): Unable to send "
3584 "command to target, sending BUSY "
3585 "status.\n", vha->vp_idx);
3586 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
3587 }
3588 }
3589 }
3590 break;
3591
3592 case IMMED_NOTIFY_TYPE:
3593 {
3594 if (unlikely(atio->u.isp2x.entry_status != 0)) {
3595 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
3596 "qla_target(%d): Received ATIO packet %x "
3597 "with error status %x\n", vha->vp_idx,
3598 atio->u.raw.entry_type,
3599 atio->u.isp2x.entry_status);
3600 break;
3601 }
3602 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
3603 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
3604 break;
3605 }
3606
3607 default:
3608 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
3609 "qla_target(%d): Received unknown ATIO atio "
3610 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
3611 break;
3612 }
3613
3614 tgt->irq_cmd_count--;
3615}
3616
3617/* ha->hardware_lock supposed to be held on entry */
3618/* called via callback from qla2xxx */
3619static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
3620{
3621 struct qla_hw_data *ha = vha->hw;
3622 struct qla_tgt *tgt = ha->tgt.qla_tgt;
3623
3624 if (unlikely(tgt == NULL)) {
3625 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
3626 "qla_target(%d): Response pkt %x received, but no "
3627 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
3628 return;
3629 }
3630
3631 ql_dbg(ql_dbg_tgt, vha, 0xe02f,
3632 "qla_target(%d): response pkt %p: T %02x C %02x S %02x "
3633 "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
3634 pkt->entry_count, pkt->entry_status, pkt->handle);
3635
3636 /*
3637 * In tgt_stop mode we also should allow all requests to pass.
3638 * Otherwise, some commands can stuck.
3639 */
3640
3641 tgt->irq_cmd_count++;
3642
3643 switch (pkt->entry_type) {
3644 case CTIO_TYPE7:
3645 {
3646 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
3647 ql_dbg(ql_dbg_tgt, vha, 0xe030, "CTIO_TYPE7: instance %d\n",
3648 vha->vp_idx);
3649 qlt_do_ctio_completion(vha, entry->handle,
3650 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
3651 entry);
3652 break;
3653 }
3654
3655 case ACCEPT_TGT_IO_TYPE:
3656 {
3657 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
3658 int rc;
3659 ql_dbg(ql_dbg_tgt, vha, 0xe031,
3660 "ACCEPT_TGT_IO instance %d status %04x "
3661 "lun %04x read/write %d data_length %04x "
3662 "target_id %02x rx_id %04x\n ", vha->vp_idx,
3663 le16_to_cpu(atio->u.isp2x.status),
3664 le16_to_cpu(atio->u.isp2x.lun),
3665 atio->u.isp2x.execution_codes,
3666 le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
3667 atio), atio->u.isp2x.rx_id);
3668 if (atio->u.isp2x.status !=
3669 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
3670 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
3671 "qla_target(%d): ATIO with error "
3672 "status %x received\n", vha->vp_idx,
3673 le16_to_cpu(atio->u.isp2x.status));
3674 break;
3675 }
3676 ql_dbg(ql_dbg_tgt, vha, 0xe032,
3677 "FCP CDB: 0x%02x, sizeof(cdb): %lu",
3678 atio->u.isp2x.cdb[0], (unsigned long
3679 int)sizeof(atio->u.isp2x.cdb));
3680
3681 rc = qlt_handle_cmd_for_atio(vha, atio);
3682 if (unlikely(rc != 0)) {
3683 if (rc == -ESRCH) {
3684#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
3685 qlt_send_busy(vha, atio, 0);
3686#else
3687 qlt_send_term_exchange(vha, NULL, atio, 1);
3688#endif
3689 } else {
3690 if (tgt->tgt_stop) {
3691 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
3692 "qla_target: Unable to send "
3693 "command to target, sending TERM "
3694 "EXCHANGE for rsp\n");
3695 qlt_send_term_exchange(vha, NULL,
3696 atio, 1);
3697 } else {
3698 ql_dbg(ql_dbg_tgt, vha, 0xe060,
3699 "qla_target(%d): Unable to send "
3700 "command to target, sending BUSY "
3701 "status\n", vha->vp_idx);
3702 qlt_send_busy(vha, atio, 0);
3703 }
3704 }
3705 }
3706 }
3707 break;
3708
3709 case CONTINUE_TGT_IO_TYPE:
3710 {
3711 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
3712 ql_dbg(ql_dbg_tgt, vha, 0xe033,
3713 "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
3714 qlt_do_ctio_completion(vha, entry->handle,
3715 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
3716 entry);
3717 break;
3718 }
3719
3720 case CTIO_A64_TYPE:
3721 {
3722 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
3723 ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
3724 vha->vp_idx);
3725 qlt_do_ctio_completion(vha, entry->handle,
3726 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
3727 entry);
3728 break;
3729 }
3730
3731 case IMMED_NOTIFY_TYPE:
3732 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
3733 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
3734 break;
3735
3736 case NOTIFY_ACK_TYPE:
3737 if (tgt->notify_ack_expected > 0) {
3738 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
3739 ql_dbg(ql_dbg_tgt, vha, 0xe036,
3740 "NOTIFY_ACK seq %08x status %x\n",
3741 le16_to_cpu(entry->u.isp2x.seq_id),
3742 le16_to_cpu(entry->u.isp2x.status));
3743 tgt->notify_ack_expected--;
3744 if (entry->u.isp2x.status !=
3745 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
3746 ql_dbg(ql_dbg_tgt, vha, 0xe061,
3747 "qla_target(%d): NOTIFY_ACK "
3748 "failed %x\n", vha->vp_idx,
3749 le16_to_cpu(entry->u.isp2x.status));
3750 }
3751 } else {
3752 ql_dbg(ql_dbg_tgt, vha, 0xe062,
3753 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
3754 vha->vp_idx);
3755 }
3756 break;
3757
3758 case ABTS_RECV_24XX:
3759 ql_dbg(ql_dbg_tgt, vha, 0xe037,
3760 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
3761 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
3762 break;
3763
3764 case ABTS_RESP_24XX:
3765 if (tgt->abts_resp_expected > 0) {
3766 struct abts_resp_from_24xx_fw *entry =
3767 (struct abts_resp_from_24xx_fw *)pkt;
3768 ql_dbg(ql_dbg_tgt, vha, 0xe038,
3769 "ABTS_RESP_24XX: compl_status %x\n",
3770 entry->compl_status);
3771 tgt->abts_resp_expected--;
3772 if (le16_to_cpu(entry->compl_status) !=
3773 ABTS_RESP_COMPL_SUCCESS) {
3774 if ((entry->error_subcode1 == 0x1E) &&
3775 (entry->error_subcode2 == 0)) {
3776 /*
3777 * We've got a race here: aborted
3778 * exchange not terminated, i.e.
3779 * response for the aborted command was
3780 * sent between the abort request was
3781 * received and processed.
3782 * Unfortunately, the firmware has a
3783 * silly requirement that all aborted
3784 * exchanges must be explicitely
3785 * terminated, otherwise it refuses to
3786 * send responses for the abort
3787 * requests. So, we have to
3788 * (re)terminate the exchange and retry
3789 * the abort response.
3790 */
3791 qlt_24xx_retry_term_exchange(vha,
3792 entry);
3793 } else
3794 ql_dbg(ql_dbg_tgt, vha, 0xe063,
3795 "qla_target(%d): ABTS_RESP_24XX "
3796 "failed %x (subcode %x:%x)",
3797 vha->vp_idx, entry->compl_status,
3798 entry->error_subcode1,
3799 entry->error_subcode2);
3800 }
3801 } else {
3802 ql_dbg(ql_dbg_tgt, vha, 0xe064,
3803 "qla_target(%d): Unexpected ABTS_RESP_24XX "
3804 "received\n", vha->vp_idx);
3805 }
3806 break;
3807
3808 default:
3809 ql_dbg(ql_dbg_tgt, vha, 0xe065,
3810 "qla_target(%d): Received unknown response pkt "
3811 "type %x\n", vha->vp_idx, pkt->entry_type);
3812 break;
3813 }
3814
3815 tgt->irq_cmd_count--;
3816}
3817
3818/*
3819 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3820 */
3821void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
3822 uint16_t *mailbox)
3823{
3824 struct qla_hw_data *ha = vha->hw;
3825 struct qla_tgt *tgt = ha->tgt.qla_tgt;
4f1d0f19 3826 int login_code;
2d70c103
NB		 3827
3828 ql_dbg(ql_dbg_tgt, vha, 0xe039,
3829 "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
3830 vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
3831 ha->operating_mode, ha->current_topology);
3832
3833 if (!ha->tgt.tgt_ops)
3834 return;
3835
3836 if (unlikely(tgt == NULL)) {
3837 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
3838 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
3839 return;
3840 }
3841
3842 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
3843 IS_QLA2100(ha))
3844 return;
3845 /*
3846 * In tgt_stop mode we also should allow all requests to pass.
3847 * Otherwise, some commands can stuck.
3848 */
3849
3850 tgt->irq_cmd_count++;
3851
3852 switch (code) {
3853 case MBA_RESET: /* Reset */
3854 case MBA_SYSTEM_ERR: /* System Error */
3855 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
3856 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
3857 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
3858 "qla_target(%d): System error async event %#x "
6efb3c0a 3859 "occurred", vha->vp_idx, code);
2d70c103
NB		 3860 break;
3861 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
3862 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3863 break;
3864
3865 case MBA_LOOP_UP:
3866 {
3867 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 3868 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 3869 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
3870 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
3871 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 3872 if (tgt->link_reinit_iocb_pending) {
3873 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
3874 0, 0, 0, 0, 0, 0);
3875 tgt->link_reinit_iocb_pending = 0;
3876 }
3877 break;
3878 }
3879
3880 case MBA_LIP_OCCURRED:
3881 case MBA_LOOP_DOWN:
3882 case MBA_LIP_RESET:
3883 case MBA_RSCN_UPDATE:
3884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 3885 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 3886 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
3887 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
3888 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 3889 break;
3890
3891 case MBA_PORT_UPDATE:
3892 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
3893 "qla_target(%d): Port update async event %#x "
6efb3c0a 3894 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 3895 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
3896 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
3897 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
3898
3899 login_code = le16_to_cpu(mailbox[2]);
3900 if (login_code == 0x4)
2d70c103
NB		 3901 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
3902 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 3903 else if (login_code == 0x7)
2d70c103
NB		 3904 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
3905 "Async MB 2: Port Logged Out\n");
3906 break;
3907
3908 default:
3909 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
6efb3c0a 3910 "qla_target(%d): Async event %#x occurred: "
4f1d0f19
AC		 3911 "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
3912 code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
3913 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 3914 break;
3915 }
3916
3917 tgt->irq_cmd_count--;
3918}
3919
3920static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
3921 uint16_t loop_id)
3922{
3923 fc_port_t *fcport;
3924 int rc;
3925
3926 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
3927 if (!fcport) {
3928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
3929 "qla_target(%d): Allocation of tmp FC port failed",
3930 vha->vp_idx);
3931 return NULL;
3932 }
3933
3934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
3935
3936 fcport->loop_id = loop_id;
3937
3938 rc = qla2x00_get_port_database(vha, fcport, 0);
3939 if (rc != QLA_SUCCESS) {
3940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
3941 "qla_target(%d): Failed to retrieve fcport "
3942 "information -- get_port_database() returned %x "
3943 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
3944 kfree(fcport);
3945 return NULL;
3946 }
3947
3948 return fcport;
3949}
3950
3951/* Must be called under tgt_mutex */
3952static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
3953 uint8_t *s_id)
3954{
3955 struct qla_hw_data *ha = vha->hw;
3956 struct qla_tgt_sess *sess = NULL;
3957 fc_port_t *fcport = NULL;
3958 int rc, global_resets;
3959 uint16_t loop_id = 0;
3960
3961retry:
3962 global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count);
3963
3964 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
3965 if (rc != 0) {
3966 if ((s_id[0] == 0xFF) &&
3967 (s_id[1] == 0xFC)) {
3968 /*
3969 * This is Domain Controller, so it should be
3970 * OK to drop SCSI commands from it.
3971 */
3972 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
3973 "Unable to find initiator with S_ID %x:%x:%x",
3974 s_id[0], s_id[1], s_id[2]);
3975 } else
3976 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
3977 "qla_target(%d): Unable to find "
3978 "initiator with S_ID %x:%x:%x",
3979 vha->vp_idx, s_id[0], s_id[1],
3980 s_id[2]);
3981 return NULL;
3982 }
3983
3984 fcport = qlt_get_port_database(vha, loop_id);
3985 if (!fcport)
3986 return NULL;
3987
3988 if (global_resets !=
3989 atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) {
3990 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
3991 "qla_target(%d): global reset during session discovery "
3992 "(counter was %d, new %d), retrying", vha->vp_idx,
3993 global_resets,
3994 atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count));
3995 goto retry;
3996 }
3997
3998 sess = qlt_create_sess(vha, fcport, true);
3999
4000 kfree(fcport);
4001 return sess;
4002}
4003
4004static void qlt_abort_work(struct qla_tgt *tgt,
4005 struct qla_tgt_sess_work_param *prm)
4006{
4007 struct scsi_qla_host *vha = tgt->vha;
4008 struct qla_hw_data *ha = vha->hw;
4009 struct qla_tgt_sess *sess = NULL;
4010 unsigned long flags;
4011 uint32_t be_s_id;
4012 uint8_t s_id[3];
4013 int rc;
4014
4015 spin_lock_irqsave(&ha->hardware_lock, flags);
4016
4017 if (tgt->tgt_stop)
4018 goto out_term;
4019
4020 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
4021 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
4022 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
4023
4024 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4025 (unsigned char *)&be_s_id);
4026 if (!sess) {
4027 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4028
4029 mutex_lock(&ha->tgt.tgt_mutex);
4030 sess = qlt_make_local_sess(vha, s_id);
4031 /* sess has got an extra creation ref */
4032 mutex_unlock(&ha->tgt.tgt_mutex);
4033
4034 spin_lock_irqsave(&ha->hardware_lock, flags);
4035 if (!sess)
4036 goto out_term;
4037 } else {
4038 kref_get(&sess->se_sess->sess_kref);
4039 }
4040
4041 if (tgt->tgt_stop)
4042 goto out_term;
4043
4044 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4045 if (rc != 0)
4046 goto out_term;
2d70c103
NB		 4047
4048 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4049 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4050 return;
4051
4052out_term:
4053 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
2d70c103
NB		 4054 if (sess)
4055 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4056 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4057}
4058
4059static void qlt_tmr_work(struct qla_tgt *tgt,
4060 struct qla_tgt_sess_work_param *prm)
4061{
4062 struct atio_from_isp *a = &prm->tm_iocb2;
4063 struct scsi_qla_host *vha = tgt->vha;
4064 struct qla_hw_data *ha = vha->hw;
4065 struct qla_tgt_sess *sess = NULL;
4066 unsigned long flags;
4067 uint8_t *s_id = NULL; /* to hide compiler warnings */
4068 int rc;
4069 uint32_t lun, unpacked_lun;
4070 int lun_size, fn;
4071 void *iocb;
4072
4073 spin_lock_irqsave(&ha->hardware_lock, flags);
4074
4075 if (tgt->tgt_stop)
4076 goto out_term;
4077
4078 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4079 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4080 if (!sess) {
4081 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4082
4083 mutex_lock(&ha->tgt.tgt_mutex);
4084 sess = qlt_make_local_sess(vha, s_id);
4085 /* sess has got an extra creation ref */
4086 mutex_unlock(&ha->tgt.tgt_mutex);
4087
4088 spin_lock_irqsave(&ha->hardware_lock, flags);
4089 if (!sess)
4090 goto out_term;
4091 } else {
4092 kref_get(&sess->se_sess->sess_kref);
4093 }
4094
4095 iocb = a;
4096 lun = a->u.isp24.fcp_cmnd.lun;
4097 lun_size = sizeof(lun);
4098 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4099 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4100
4101 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4102 if (rc != 0)
4103 goto out_term;
2d70c103
NB		 4104
4105 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4106 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4107 return;
4108
4109out_term:
4110 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
2d70c103
NB		 4111 if (sess)
4112 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4113 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4114}
4115
4116static void qlt_sess_work_fn(struct work_struct *work)
4117{
4118 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4119 struct scsi_qla_host *vha = tgt->vha;
4120 unsigned long flags;
4121
4122 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4123
4124 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4125 while (!list_empty(&tgt->sess_works_list)) {
4126 struct qla_tgt_sess_work_param *prm = list_entry(
4127 tgt->sess_works_list.next, typeof(*prm),
4128 sess_works_list_entry);
4129
4130 /*
4131 * This work can be scheduled on several CPUs at time, so we
4132 * must delete the entry to eliminate double processing
4133 */
4134 list_del(&prm->sess_works_list_entry);
4135
4136 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4137
4138 switch (prm->type) {
4139 case QLA_TGT_SESS_WORK_ABORT:
4140 qlt_abort_work(tgt, prm);
4141 break;
4142 case QLA_TGT_SESS_WORK_TM:
4143 qlt_tmr_work(tgt, prm);
4144 break;
4145 default:
4146 BUG_ON(1);
4147 break;
4148 }
4149
4150 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4151
4152 kfree(prm);
4153 }
4154 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4155}
4156
4157/* Must be called under tgt_host_action_mutex */
4158int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4159{
4160 struct qla_tgt *tgt;
4161
4162 if (!QLA_TGT_MODE_ENABLED())
4163 return 0;
4164
33c36c0a
AE		 4165 if (!IS_TGT_MODE_CAPABLE(ha)) {
4166 ql_log(ql_log_warn, base_vha, 0xe070,
4167 "This adapter does not support target mode.\n");
4168 return 0;
4169 }
4170
2d70c103
NB		 4171 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
4172 "Registering target for host %ld(%p)", base_vha->host_no, ha);
4173
4174 BUG_ON((ha->tgt.qla_tgt != NULL) || (ha->tgt.tgt_ops != NULL));
4175
4176 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4177 if (!tgt) {
4178 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4179 "Unable to allocate struct qla_tgt\n");
4180 return -ENOMEM;
4181 }
4182
4183 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4184 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4185
4186 tgt->ha = ha;
4187 tgt->vha = base_vha;
4188 init_waitqueue_head(&tgt->waitQ);
4189 INIT_LIST_HEAD(&tgt->sess_list);
4190 INIT_LIST_HEAD(&tgt->del_sess_list);
4191 INIT_DELAYED_WORK(&tgt->sess_del_work,
4192 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4193 spin_lock_init(&tgt->sess_work_lock);
4194 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4195 INIT_LIST_HEAD(&tgt->sess_works_list);
4196 spin_lock_init(&tgt->srr_lock);
4197 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4198 INIT_LIST_HEAD(&tgt->srr_imm_list);
4199 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4200 atomic_set(&tgt->tgt_global_resets_count, 0);
4201
4202 ha->tgt.qla_tgt = tgt;
4203
4204 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4205 "qla_target(%d): using 64 Bit PCI addressing",
4206 base_vha->vp_idx);
4207 tgt->tgt_enable_64bit_addr = 1;
4208 /* 3 is reserved */
4209 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4210 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4211 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4212
4213 mutex_lock(&qla_tgt_mutex);
4214 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4215 mutex_unlock(&qla_tgt_mutex);
4216
4217 return 0;
4218}
4219
4220/* Must be called under tgt_host_action_mutex */
4221int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4222{
4223 if (!ha->tgt.qla_tgt)
4224 return 0;
4225
4226 mutex_lock(&qla_tgt_mutex);
4227 list_del(&ha->tgt.qla_tgt->tgt_list_entry);
4228 mutex_unlock(&qla_tgt_mutex);
4229
4230 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4231 vha->host_no, ha);
4232 qlt_release(ha->tgt.qla_tgt);
4233
4234 return 0;
4235}
4236
4237static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4238 unsigned char *b)
4239{
4240 int i;
4241
4242 pr_debug("qla2xxx HW vha->node_name: ");
4243 for (i = 0; i < WWN_SIZE; i++)
4244 pr_debug("%02x ", vha->node_name[i]);
4245 pr_debug("\n");
4246 pr_debug("qla2xxx HW vha->port_name: ");
4247 for (i = 0; i < WWN_SIZE; i++)
4248 pr_debug("%02x ", vha->port_name[i]);
4249 pr_debug("\n");
4250
4251 pr_debug("qla2xxx passed configfs WWPN: ");
4252 put_unaligned_be64(wwpn, b);
4253 for (i = 0; i < WWN_SIZE; i++)
4254 pr_debug("%02x ", b[i]);
4255 pr_debug("\n");
4256}
4257
4258/**
4259 * qla_tgt_lport_register - register lport with external module
4260 *
4261 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4262 * @wwpn: Passwd FC target WWPN
4263 * @callback: lport initialization callback for tcm_qla2xxx code
4264 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4265 */
4266int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
4267 int (*callback)(struct scsi_qla_host *), void *target_lport_ptr)
4268{
4269 struct qla_tgt *tgt;
4270 struct scsi_qla_host *vha;
4271 struct qla_hw_data *ha;
4272 struct Scsi_Host *host;
4273 unsigned long flags;
4274 int rc;
4275 u8 b[WWN_SIZE];
4276
4277 mutex_lock(&qla_tgt_mutex);
4278 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4279 vha = tgt->vha;
4280 ha = vha->hw;
4281
4282 host = vha->host;
4283 if (!host)
4284 continue;
4285
4286 if (ha->tgt.tgt_ops != NULL)
4287 continue;
4288
4289 if (!(host->hostt->supported_mode & MODE_TARGET))
4290 continue;
4291
4292 spin_lock_irqsave(&ha->hardware_lock, flags);
4293 if (host->active_mode & MODE_TARGET) {
4294 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4295 host->host_no);
4296 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4297 continue;
4298 }
4299 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4300
4301 if (!scsi_host_get(host)) {
4302 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4303 "Unable to scsi_host_get() for"
4304 " qla2xxx scsi_host\n");
4305 continue;
4306 }
4307 qlt_lport_dump(vha, wwpn, b);
4308
4309 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4310 scsi_host_put(host);
4311 continue;
4312 }
4313 /*
4314 * Setup passed parameters ahead of invoking callback
4315 */
4316 ha->tgt.tgt_ops = qla_tgt_ops;
4317 ha->tgt.target_lport_ptr = target_lport_ptr;
4318 rc = (*callback)(vha);
4319 if (rc != 0) {
4320 ha->tgt.tgt_ops = NULL;
4321 ha->tgt.target_lport_ptr = NULL;
4322 }
4323 mutex_unlock(&qla_tgt_mutex);
4324 return rc;
4325 }
4326 mutex_unlock(&qla_tgt_mutex);
4327
4328 return -ENODEV;
4329}
4330EXPORT_SYMBOL(qlt_lport_register);
4331
4332/**
4333 * qla_tgt_lport_deregister - Degister lport
4334 *
4335 * @vha: Registered scsi_qla_host pointer
4336 */
4337void qlt_lport_deregister(struct scsi_qla_host *vha)
4338{
4339 struct qla_hw_data *ha = vha->hw;
4340 struct Scsi_Host *sh = vha->host;
4341 /*
4342 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
4343 */
4344 ha->tgt.target_lport_ptr = NULL;
4345 ha->tgt.tgt_ops = NULL;
4346 /*
4347 * Release the Scsi_Host reference for the underlying qla2xxx host
4348 */
4349 scsi_host_put(sh);
4350}
4351EXPORT_SYMBOL(qlt_lport_deregister);
4352
4353/* Must be called under HW lock */
4354void qlt_set_mode(struct scsi_qla_host *vha)
4355{
4356 struct qla_hw_data *ha = vha->hw;
4357
4358 switch (ql2x_ini_mode) {
4359 case QLA2XXX_INI_MODE_DISABLED:
4360 case QLA2XXX_INI_MODE_EXCLUSIVE:
4361 vha->host->active_mode = MODE_TARGET;
4362 break;
4363 case QLA2XXX_INI_MODE_ENABLED:
4364 vha->host->active_mode |= MODE_TARGET;
4365 break;
4366 default:
4367 break;
4368 }
4369
4370 if (ha->tgt.ini_mode_force_reverse)
4371 qla_reverse_ini_mode(vha);
4372}
4373
4374/* Must be called under HW lock */
4375void qlt_clear_mode(struct scsi_qla_host *vha)
4376{
4377 struct qla_hw_data *ha = vha->hw;
4378
4379 switch (ql2x_ini_mode) {
4380 case QLA2XXX_INI_MODE_DISABLED:
4381 vha->host->active_mode = MODE_UNKNOWN;
4382 break;
4383 case QLA2XXX_INI_MODE_EXCLUSIVE:
4384 vha->host->active_mode = MODE_INITIATOR;
4385 break;
4386 case QLA2XXX_INI_MODE_ENABLED:
4387 vha->host->active_mode &= ~MODE_TARGET;
4388 break;
4389 default:
4390 break;
4391 }
4392
4393 if (ha->tgt.ini_mode_force_reverse)
4394 qla_reverse_ini_mode(vha);
4395}
4396
4397/*
4398 * qla_tgt_enable_vha - NO LOCK HELD
4399 *
4400 * host_reset, bring up w/ Target Mode Enabled
4401 */
4402void
4403qlt_enable_vha(struct scsi_qla_host *vha)
4404{
4405 struct qla_hw_data *ha = vha->hw;
4406 struct qla_tgt *tgt = ha->tgt.qla_tgt;
4407 unsigned long flags;
4408
4409 if (!tgt) {
4410 ql_dbg(ql_dbg_tgt, vha, 0xe069,
4411 "Unable to locate qla_tgt pointer from"
4412 " struct qla_hw_data\n");
4413 dump_stack();
4414 return;
4415 }
4416
4417 spin_lock_irqsave(&ha->hardware_lock, flags);
4418 tgt->tgt_stopped = 0;
4419 qlt_set_mode(vha);
4420 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4421
4422 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4423 qla2xxx_wake_dpc(vha);
4424 qla2x00_wait_for_hba_online(vha);
4425}
4426EXPORT_SYMBOL(qlt_enable_vha);
4427
4428/*
4429 * qla_tgt_disable_vha - NO LOCK HELD
4430 *
4431 * Disable Target Mode and reset the adapter
4432 */
4433void
4434qlt_disable_vha(struct scsi_qla_host *vha)
4435{
4436 struct qla_hw_data *ha = vha->hw;
4437 struct qla_tgt *tgt = ha->tgt.qla_tgt;
4438 unsigned long flags;
4439
4440 if (!tgt) {
4441 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
4442 "Unable to locate qla_tgt pointer from"
4443 " struct qla_hw_data\n");
4444 dump_stack();
4445 return;
4446 }
4447
4448 spin_lock_irqsave(&ha->hardware_lock, flags);
4449 qlt_clear_mode(vha);
4450 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4451
4452 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4453 qla2xxx_wake_dpc(vha);
4454 qla2x00_wait_for_hba_online(vha);
4455}
4456
4457/*
4458 * Called from qla_init.c:qla24xx_vport_create() contex to setup
4459 * the target mode specific struct scsi_qla_host and struct qla_hw_data
4460 * members.
4461 */
4462void
4463qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
4464{
4465 if (!qla_tgt_mode_enabled(vha))
4466 return;
4467
4468 mutex_init(&ha->tgt.tgt_mutex);
4469 mutex_init(&ha->tgt.tgt_host_action_mutex);
4470
4471 qlt_clear_mode(vha);
4472
4473 /*
4474 * NOTE: Currently the value is kept the same for <24xx and
4475 * >=24xx ISPs. If it is necessary to change it,
4476 * the check should be added for specific ISPs,
4477 * assigning the value appropriately.
4478 */
4479 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
4480}
4481
4482void
4483qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
4484{
4485 /*
4486 * FC-4 Feature bit 0 indicates target functionality to the name server.
4487 */
4488 if (qla_tgt_mode_enabled(vha)) {
4489 if (qla_ini_mode_enabled(vha))
4490 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
4491 else
4492 ct_req->req.rff_id.fc4_feature = BIT_0;
4493 } else if (qla_ini_mode_enabled(vha)) {
4494 ct_req->req.rff_id.fc4_feature = BIT_1;
4495 }
4496}
4497
4498/*
4499 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
4500 * @ha: HA context
4501 *
4502 * Beginning of ATIO ring has initialization control block already built
4503 * by nvram config routine.
4504 *
4505 * Returns 0 on success.
4506 */
4507void
4508qlt_init_atio_q_entries(struct scsi_qla_host *vha)
4509{
4510 struct qla_hw_data *ha = vha->hw;
4511 uint16_t cnt;
4512 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
4513
4514 if (!qla_tgt_mode_enabled(vha))
4515 return;
4516
4517 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
4518 pkt->u.raw.signature = ATIO_PROCESSED;
4519 pkt++;
4520 }
4521
4522}
4523
4524/*
4525 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
4526 * @ha: SCSI driver HA context
4527 */
4528void
4529qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
4530{
4531 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 4532 struct atio_from_isp *pkt;
4533 int cnt, i;
4534
4535 if (!vha->flags.online)
4536 return;
4537
4538 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
4539 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
4540 cnt = pkt->u.raw.entry_count;
4541
4542 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
4543
4544 for (i = 0; i < cnt; i++) {
4545 ha->tgt.atio_ring_index++;
4546 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
4547 ha->tgt.atio_ring_index = 0;
4548 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
4549 } else
4550 ha->tgt.atio_ring_ptr++;
4551
4552 pkt->u.raw.signature = ATIO_PROCESSED;
4553 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
4554 }
4555 wmb();
4556 }
4557
4558 /* Adjust ring index */
aa230bc5 4559 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 4560}
4561
4562void
aa230bc5 4563qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 4564{
4565 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 4566 if (!QLA_TGT_MODE_ENABLED())
4567 return;
2d70c103 4568
aa230bc5
AE		 4569 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
4570 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
4571 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
4572
4573 if (IS_ATIO_MSIX_CAPABLE(ha)) {
4574 struct qla_msix_entry *msix = &ha->msix_entries[2];
4575 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
4576
4577 icb->msix_atio = cpu_to_le16(msix->entry);
4578 ql_dbg(ql_dbg_init, vha, 0xf072,
4579 "Registering ICB vector 0x%x for atio que.\n",
4580 msix->entry);
2d70c103
NB		 4581 }
4582}
4583
4584void
4585qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
4586{
4587 struct qla_hw_data *ha = vha->hw;
4588
4589 if (qla_tgt_mode_enabled(vha)) {
4590 if (!ha->tgt.saved_set) {
4591 /* We save only once */
4592 ha->tgt.saved_exchange_count = nv->exchange_count;
4593 ha->tgt.saved_firmware_options_1 =
4594 nv->firmware_options_1;
4595 ha->tgt.saved_firmware_options_2 =
4596 nv->firmware_options_2;
4597 ha->tgt.saved_firmware_options_3 =
4598 nv->firmware_options_3;
4599 ha->tgt.saved_set = 1;
4600 }
4601
4602 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
4603
4604 /* Enable target mode */
4605 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
4606
4607 /* Disable ini mode, if requested */
4608 if (!qla_ini_mode_enabled(vha))
4609 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
4610
4611 /* Disable Full Login after LIP */
4612 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
4613 /* Enable initial LIP */
4614 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
4615 /* Enable FC tapes support */
4616 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
4617 /* Disable Full Login after LIP */
4618 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
4619 /* Enable target PRLI control */
4620 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
4621 } else {
4622 if (ha->tgt.saved_set) {
4623 nv->exchange_count = ha->tgt.saved_exchange_count;
4624 nv->firmware_options_1 =
4625 ha->tgt.saved_firmware_options_1;
4626 nv->firmware_options_2 =
4627 ha->tgt.saved_firmware_options_2;
4628 nv->firmware_options_3 =
4629 ha->tgt.saved_firmware_options_3;
4630 }
4631 return;
4632 }
4633
4634 /* out-of-order frames reassembly */
4635 nv->firmware_options_3 |= BIT_6|BIT_9;
4636
4637 if (ha->tgt.enable_class_2) {
4638 if (vha->flags.init_done)
4639 fc_host_supported_classes(vha->host) =
4640 FC_COS_CLASS2 | FC_COS_CLASS3;
4641
4642 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
4643 } else {
4644 if (vha->flags.init_done)
4645 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
4646
4647 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
4648 }
4649}
4650
4651void
4652qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
4653 struct init_cb_24xx *icb)
4654{
4655 struct qla_hw_data *ha = vha->hw;
4656
4657 if (ha->tgt.node_name_set) {
4658 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
4659 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
4660 }
4661}
4662
aa230bc5
AE		 4663void
4664qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
4665{
4666 struct qla_hw_data *ha = vha->hw;
4667
4668 if (!QLA_TGT_MODE_ENABLED())
4669 return;
4670
4671 if (qla_tgt_mode_enabled(vha)) {
4672 if (!ha->tgt.saved_set) {
4673 /* We save only once */
4674 ha->tgt.saved_exchange_count = nv->exchange_count;
4675 ha->tgt.saved_firmware_options_1 =
4676 nv->firmware_options_1;
4677 ha->tgt.saved_firmware_options_2 =
4678 nv->firmware_options_2;
4679 ha->tgt.saved_firmware_options_3 =
4680 nv->firmware_options_3;
4681 ha->tgt.saved_set = 1;
4682 }
4683
4684 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
4685
4686 /* Enable target mode */
4687 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
4688
4689 /* Disable ini mode, if requested */
4690 if (!qla_ini_mode_enabled(vha))
4691 nv->firmware_options_1 |=
4692 __constant_cpu_to_le32(BIT_5);
4693
4694 /* Disable Full Login after LIP */
4695 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
4696 /* Enable initial LIP */
4697 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
4698 /* Enable FC tapes support */
4699 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
4700 /* Disable Full Login after LIP */
4701 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
4702 /* Enable target PRLI control */
4703 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
4704 } else {
4705 if (ha->tgt.saved_set) {
4706 nv->exchange_count = ha->tgt.saved_exchange_count;
4707 nv->firmware_options_1 =
4708 ha->tgt.saved_firmware_options_1;
4709 nv->firmware_options_2 =
4710 ha->tgt.saved_firmware_options_2;
4711 nv->firmware_options_3 =
4712 ha->tgt.saved_firmware_options_3;
4713 }
4714 return;
4715 }
4716
4717 /* out-of-order frames reassembly */
4718 nv->firmware_options_3 |= BIT_6|BIT_9;
4719
4720 if (ha->tgt.enable_class_2) {
4721 if (vha->flags.init_done)
4722 fc_host_supported_classes(vha->host) =
4723 FC_COS_CLASS2 | FC_COS_CLASS3;
4724
4725 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
4726 } else {
4727 if (vha->flags.init_done)
4728 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
4729
4730 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
4731 }
4732}
4733
4734void
4735qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
4736 struct init_cb_81xx *icb)
4737{
4738 struct qla_hw_data *ha = vha->hw;
4739
4740 if (!QLA_TGT_MODE_ENABLED())
4741 return;
4742
4743 if (ha->tgt.node_name_set) {
4744 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
4745 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
4746 }
4747}
4748
4749void
4750qlt_83xx_iospace_config(struct qla_hw_data *ha)
4751{
4752 if (!QLA_TGT_MODE_ENABLED())
4753 return;
4754
4755 ha->msix_count += 1; /* For ATIO Q */
4756}
4757
2d70c103
NB		 4758int
4759qlt_24xx_process_response_error(struct scsi_qla_host *vha,
4760 struct sts_entry_24xx *pkt)
4761{
4762 switch (pkt->entry_type) {
4763 case ABTS_RECV_24XX:
4764 case ABTS_RESP_24XX:
4765 case CTIO_TYPE7:
4766 case NOTIFY_ACK_TYPE:
4767 return 1;
4768 default:
4769 return 0;
4770 }
4771}
4772
4773void
4774qlt_modify_vp_config(struct scsi_qla_host *vha,
4775 struct vp_config_entry_24xx *vpmod)
4776{
4777 if (qla_tgt_mode_enabled(vha))
4778 vpmod->options_idx1 &= ~BIT_5;
4779 /* Disable ini mode, if requested */
4780 if (!qla_ini_mode_enabled(vha))
4781 vpmod->options_idx1 &= ~BIT_4;
4782}
4783
4784void
4785qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
4786{
4787 if (!QLA_TGT_MODE_ENABLED())
4788 return;
4789
aa230bc5
AE		 4790 if (ha->mqenable || IS_QLA83XX(ha)) {
4791 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
4792 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
4793 } else {
4794 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
4795 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
4796 }
4797
2d70c103
NB		 4798 mutex_init(&ha->tgt.tgt_mutex);
4799 mutex_init(&ha->tgt.tgt_host_action_mutex);
4800 qlt_clear_mode(base_vha);
4801}
4802
aa230bc5
AE		 4803irqreturn_t
4804qla83xx_msix_atio_q(int irq, void *dev_id)
4805{
4806 struct rsp_que *rsp;
4807 scsi_qla_host_t *vha;
4808 struct qla_hw_data *ha;
4809 unsigned long flags;
4810
4811 rsp = (struct rsp_que *) dev_id;
4812 ha = rsp->hw;
4813 vha = pci_get_drvdata(ha->pdev);
4814
4815 spin_lock_irqsave(&ha->hardware_lock, flags);
4816
4817 qlt_24xx_process_atio_queue(vha);
4818 qla24xx_process_response_queue(vha, rsp);
4819
4820 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4821
4822 return IRQ_HANDLED;
4823}
4824
2d70c103
NB		 4825int
4826qlt_mem_alloc(struct qla_hw_data *ha)
4827{
4828 if (!QLA_TGT_MODE_ENABLED())
4829 return 0;
4830
4831 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
4832 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
4833 if (!ha->tgt.tgt_vp_map)
4834 return -ENOMEM;
4835
4836 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
4837 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
4838 &ha->tgt.atio_dma, GFP_KERNEL);
4839 if (!ha->tgt.atio_ring) {
4840 kfree(ha->tgt.tgt_vp_map);
4841 return -ENOMEM;
4842 }
4843 return 0;
4844}
4845
4846void
4847qlt_mem_free(struct qla_hw_data *ha)
4848{
4849 if (!QLA_TGT_MODE_ENABLED())
4850 return;
4851
4852 if (ha->tgt.atio_ring) {
4853 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
4854 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
4855 ha->tgt.atio_dma);
4856 }
4857 kfree(ha->tgt.tgt_vp_map);
4858}
4859
4860/* vport_slock to be held by the caller */
4861void
4862qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
4863{
4864 if (!QLA_TGT_MODE_ENABLED())
4865 return;
4866
4867 switch (cmd) {
4868 case SET_VP_IDX:
4869 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
4870 break;
4871 case SET_AL_PA:
4872 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
4873 break;
4874 case RESET_VP_IDX:
4875 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
4876 break;
4877 case RESET_AL_PA:
4878 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
4879 break;
4880 }
4881}
4882
4883static int __init qlt_parse_ini_mode(void)
4884{
4885 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
4886 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
4887 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
4888 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
4889 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
4890 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
4891 else
4892 return false;
4893
4894 return true;
4895}
4896
4897int __init qlt_init(void)
4898{
4899 int ret;
4900
4901 if (!qlt_parse_ini_mode()) {
4902 ql_log(ql_log_fatal, NULL, 0xe06b,
4903 "qlt_parse_ini_mode() failed\n");
4904 return -EINVAL;
4905 }
4906
4907 if (!QLA_TGT_MODE_ENABLED())
4908 return 0;
4909
4910 qla_tgt_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep",
4911 sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd), 0,
4912 NULL);
4913 if (!qla_tgt_cmd_cachep) {
4914 ql_log(ql_log_fatal, NULL, 0xe06c,
4915 "kmem_cache_create for qla_tgt_cmd_cachep failed\n");
4916 return -ENOMEM;
4917 }
4918
4919 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
4920 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
4921 qla_tgt_mgmt_cmd), 0, NULL);
4922 if (!qla_tgt_mgmt_cmd_cachep) {
4923 ql_log(ql_log_fatal, NULL, 0xe06d,
4924 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
4925 ret = -ENOMEM;
4926 goto out;
4927 }
4928
4929 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
4930 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
4931 if (!qla_tgt_mgmt_cmd_mempool) {
4932 ql_log(ql_log_fatal, NULL, 0xe06e,
4933 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
4934 ret = -ENOMEM;
4935 goto out_mgmt_cmd_cachep;
4936 }
4937
4938 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
4939 if (!qla_tgt_wq) {
4940 ql_log(ql_log_fatal, NULL, 0xe06f,
4941 "alloc_workqueue for qla_tgt_wq failed\n");
4942 ret = -ENOMEM;
4943 goto out_cmd_mempool;
4944 }
4945 /*
4946 * Return 1 to signal that initiator-mode is being disabled
4947 */
4948 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
4949
4950out_cmd_mempool:
4951 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
4952out_mgmt_cmd_cachep:
4953 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
4954out:
4955 kmem_cache_destroy(qla_tgt_cmd_cachep);
4956 return ret;
4957}
4958
4959void qlt_exit(void)
4960{
4961 if (!QLA_TGT_MODE_ENABLED())
4962 return;
4963
4964 destroy_workqueue(qla_tgt_wq);
4965 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
4966 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
4967 kmem_cache_destroy(qla_tgt_cmd_cachep);
4968}
Linux kernel - Deliverables
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