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qla2xxx: T10-Dif: add T10-PI support
[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 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
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{
f83adb61
QT		 185 ql_dbg(ql_dbg_tgt, vha, 0xe072,
186 "%s: qla_target(%d): type %x ox_id %04x\n",
187 __func__, vha->vp_idx, atio->u.raw.entry_type,
188 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
189
2d70c103
NB		 190 switch (atio->u.raw.entry_type) {
191 case ATIO_TYPE7:
192 {
193 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
194 atio->u.isp24.fcp_hdr.d_id);
195 if (unlikely(NULL == host)) {
196 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
197 "qla_target(%d): Received ATIO_TYPE7 "
198 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
199 atio->u.isp24.fcp_hdr.d_id[0],
200 atio->u.isp24.fcp_hdr.d_id[1],
201 atio->u.isp24.fcp_hdr.d_id[2]);
202 break;
203 }
204 qlt_24xx_atio_pkt(host, atio);
205 break;
206 }
207
208 case IMMED_NOTIFY_TYPE:
209 {
210 struct scsi_qla_host *host = vha;
211 struct imm_ntfy_from_isp *entry =
212 (struct imm_ntfy_from_isp *)atio;
213
214 if ((entry->u.isp24.vp_index != 0xFF) &&
215 (entry->u.isp24.nport_handle != 0xFFFF)) {
216 host = qlt_find_host_by_vp_idx(vha,
217 entry->u.isp24.vp_index);
218 if (unlikely(!host)) {
219 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
220 "qla_target(%d): Received "
221 "ATIO (IMMED_NOTIFY_TYPE) "
222 "with unknown vp_index %d\n",
223 vha->vp_idx, entry->u.isp24.vp_index);
224 break;
225 }
226 }
227 qlt_24xx_atio_pkt(host, atio);
228 break;
229 }
230
231 default:
232 ql_dbg(ql_dbg_tgt, vha, 0xe040,
233 "qla_target(%d): Received unknown ATIO atio "
234 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
235 break;
236 }
237
238 return;
239}
240
241void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
242{
243 switch (pkt->entry_type) {
f83adb61
QT		 244 case CTIO_CRC2:
245 ql_dbg(ql_dbg_tgt, vha, 0xe073,
246 "qla_target(%d):%s: CRC2 Response pkt\n",
247 vha->vp_idx, __func__);
2d70c103
NB		 248 case CTIO_TYPE7:
249 {
250 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
251 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
252 entry->vp_index);
253 if (unlikely(!host)) {
254 ql_dbg(ql_dbg_tgt, vha, 0xe041,
255 "qla_target(%d): Response pkt (CTIO_TYPE7) "
256 "received, with unknown vp_index %d\n",
257 vha->vp_idx, entry->vp_index);
258 break;
259 }
260 qlt_response_pkt(host, pkt);
261 break;
262 }
263
264 case IMMED_NOTIFY_TYPE:
265 {
266 struct scsi_qla_host *host = vha;
267 struct imm_ntfy_from_isp *entry =
268 (struct imm_ntfy_from_isp *)pkt;
269
270 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
271 if (unlikely(!host)) {
272 ql_dbg(ql_dbg_tgt, vha, 0xe042,
273 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
274 "received, with unknown vp_index %d\n",
275 vha->vp_idx, entry->u.isp24.vp_index);
276 break;
277 }
278 qlt_response_pkt(host, pkt);
279 break;
280 }
281
282 case NOTIFY_ACK_TYPE:
283 {
284 struct scsi_qla_host *host = vha;
285 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
286
287 if (0xFF != entry->u.isp24.vp_index) {
288 host = qlt_find_host_by_vp_idx(vha,
289 entry->u.isp24.vp_index);
290 if (unlikely(!host)) {
291 ql_dbg(ql_dbg_tgt, vha, 0xe043,
292 "qla_target(%d): Response "
293 "pkt (NOTIFY_ACK_TYPE) "
294 "received, with unknown "
295 "vp_index %d\n", vha->vp_idx,
296 entry->u.isp24.vp_index);
297 break;
298 }
299 }
300 qlt_response_pkt(host, pkt);
301 break;
302 }
303
304 case ABTS_RECV_24XX:
305 {
306 struct abts_recv_from_24xx *entry =
307 (struct abts_recv_from_24xx *)pkt;
308 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
309 entry->vp_index);
310 if (unlikely(!host)) {
311 ql_dbg(ql_dbg_tgt, vha, 0xe044,
312 "qla_target(%d): Response pkt "
313 "(ABTS_RECV_24XX) received, with unknown "
314 "vp_index %d\n", vha->vp_idx, entry->vp_index);
315 break;
316 }
317 qlt_response_pkt(host, pkt);
318 break;
319 }
320
321 case ABTS_RESP_24XX:
322 {
323 struct abts_resp_to_24xx *entry =
324 (struct abts_resp_to_24xx *)pkt;
325 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
326 entry->vp_index);
327 if (unlikely(!host)) {
328 ql_dbg(ql_dbg_tgt, vha, 0xe045,
329 "qla_target(%d): Response pkt "
330 "(ABTS_RECV_24XX) received, with unknown "
331 "vp_index %d\n", vha->vp_idx, entry->vp_index);
332 break;
333 }
334 qlt_response_pkt(host, pkt);
335 break;
336 }
337
338 default:
339 qlt_response_pkt(vha, pkt);
340 break;
341 }
342
343}
344
345static void qlt_free_session_done(struct work_struct *work)
346{
347 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
348 free_work);
349 struct qla_tgt *tgt = sess->tgt;
350 struct scsi_qla_host *vha = sess->vha;
351 struct qla_hw_data *ha = vha->hw;
352
353 BUG_ON(!tgt);
354 /*
355 * Release the target session for FC Nexus from fabric module code.
356 */
357 if (sess->se_sess != NULL)
358 ha->tgt.tgt_ops->free_session(sess);
359
360 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
361 "Unregistration of sess %p finished\n", sess);
362
363 kfree(sess);
364 /*
365 * We need to protect against race, when tgt is freed before or
366 * inside wake_up()
367 */
368 tgt->sess_count--;
369 if (tgt->sess_count == 0)
370 wake_up_all(&tgt->waitQ);
371}
372
373/* ha->hardware_lock supposed to be held on entry */
374void qlt_unreg_sess(struct qla_tgt_sess *sess)
375{
376 struct scsi_qla_host *vha = sess->vha;
377
378 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
379
380 list_del(&sess->sess_list_entry);
381 if (sess->deleted)
382 list_del(&sess->del_list_entry);
383
384 INIT_WORK(&sess->free_work, qlt_free_session_done);
385 schedule_work(&sess->free_work);
386}
387EXPORT_SYMBOL(qlt_unreg_sess);
388
389/* ha->hardware_lock supposed to be held on entry */
390static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
391{
392 struct qla_hw_data *ha = vha->hw;
393 struct qla_tgt_sess *sess = NULL;
394 uint32_t unpacked_lun, lun = 0;
395 uint16_t loop_id;
396 int res = 0;
397 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
398 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
399
400 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
401 if (loop_id == 0xFFFF) {
402#if 0 /* FIXME: Re-enable Global event handling.. */
403 /* Global event */
404 atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
405 qlt_clear_tgt_db(ha->tgt.qla_tgt, 1);
406 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
407 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
408 typeof(*sess), sess_list_entry);
409 switch (mcmd) {
410 case QLA_TGT_NEXUS_LOSS_SESS:
411 mcmd = QLA_TGT_NEXUS_LOSS;
412 break;
413 case QLA_TGT_ABORT_ALL_SESS:
414 mcmd = QLA_TGT_ABORT_ALL;
415 break;
416 case QLA_TGT_NEXUS_LOSS:
417 case QLA_TGT_ABORT_ALL:
418 break;
419 default:
420 ql_dbg(ql_dbg_tgt, vha, 0xe046,
421 "qla_target(%d): Not allowed "
422 "command %x in %s", vha->vp_idx,
423 mcmd, __func__);
424 sess = NULL;
425 break;
426 }
427 } else
428 sess = NULL;
429#endif
430 } else {
431 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
432 }
433
434 ql_dbg(ql_dbg_tgt, vha, 0xe000,
435 "Using sess for qla_tgt_reset: %p\n", sess);
436 if (!sess) {
437 res = -ESRCH;
438 return res;
439 }
440
441 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 442 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
443 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 444 mcmd, loop_id);
445
446 lun = a->u.isp24.fcp_cmnd.lun;
447 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
448
449 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
450 iocb, QLA24XX_MGMT_SEND_NACK);
451}
452
453/* ha->hardware_lock supposed to be held on entry */
454static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
455 bool immediate)
456{
457 struct qla_tgt *tgt = sess->tgt;
458 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
459
460 if (sess->deleted)
461 return;
462
463 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
464 "Scheduling sess %p for deletion\n", sess);
465 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
466 sess->deleted = 1;
467
468 if (immediate)
469 dev_loss_tmo = 0;
470
471 sess->expires = jiffies + dev_loss_tmo * HZ;
472
473 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
7b833558 474 "qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
2d70c103 475 "deletion in %u secs (expires: %lu) immed: %d\n",
7b833558
OK		 476 sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
477 sess->expires, immediate);
2d70c103
NB		 478
479 if (immediate)
480 schedule_delayed_work(&tgt->sess_del_work, 0);
481 else
482 schedule_delayed_work(&tgt->sess_del_work,
63832aab 483 sess->expires - jiffies);
2d70c103
NB		 484}
485
486/* ha->hardware_lock supposed to be held on entry */
487static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
488{
489 struct qla_tgt_sess *sess;
490
491 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
492 qlt_schedule_sess_for_deletion(sess, true);
493
494 /* At this point tgt could be already dead */
495}
496
497static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
498 uint16_t *loop_id)
499{
500 struct qla_hw_data *ha = vha->hw;
501 dma_addr_t gid_list_dma;
502 struct gid_list_info *gid_list;
503 char *id_iter;
504 int res, rc, i;
505 uint16_t entries;
506
507 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
508 &gid_list_dma, GFP_KERNEL);
509 if (!gid_list) {
510 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
511 "qla_target(%d): DMA Alloc failed of %u\n",
512 vha->vp_idx, qla2x00_gid_list_size(ha));
513 return -ENOMEM;
514 }
515
516 /* Get list of logged in devices */
517 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
518 if (rc != QLA_SUCCESS) {
519 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
520 "qla_target(%d): get_id_list() failed: %x\n",
521 vha->vp_idx, rc);
522 res = -1;
523 goto out_free_id_list;
524 }
525
526 id_iter = (char *)gid_list;
527 res = -1;
528 for (i = 0; i < entries; i++) {
529 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
530 if ((gid->al_pa == s_id[2]) &&
531 (gid->area == s_id[1]) &&
532 (gid->domain == s_id[0])) {
533 *loop_id = le16_to_cpu(gid->loop_id);
534 res = 0;
535 break;
536 }
537 id_iter += ha->gid_list_info_size;
538 }
539
540out_free_id_list:
541 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
542 gid_list, gid_list_dma);
543 return res;
544}
545
2d70c103
NB		 546/* ha->hardware_lock supposed to be held on entry */
547static void qlt_undelete_sess(struct qla_tgt_sess *sess)
548{
549 BUG_ON(!sess->deleted);
550
551 list_del(&sess->del_list_entry);
552 sess->deleted = 0;
553}
554
555static void qlt_del_sess_work_fn(struct delayed_work *work)
556{
557 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
558 sess_del_work);
559 struct scsi_qla_host *vha = tgt->vha;
560 struct qla_hw_data *ha = vha->hw;
561 struct qla_tgt_sess *sess;
63832aab 562 unsigned long flags, elapsed;
2d70c103
NB		 563
564 spin_lock_irqsave(&ha->hardware_lock, flags);
565 while (!list_empty(&tgt->del_sess_list)) {
566 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
567 del_list_entry);
63832aab
SU		 568 elapsed = jiffies;
569 if (time_after_eq(elapsed, 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,
63832aab 579 sess->expires - elapsed);
2d70c103
NB		 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);
0e8cd71c 602 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
2d70c103
NB		 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,
7b833558
OK		 633 "qla_target(%u): session allocation failed, all commands "
634 "from port %8phC will be refused", vha->vp_idx,
635 fcport->port_name);
2d70c103
NB		 636
637 return NULL;
638 }
0e8cd71c 639 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 640 sess->vha = vha;
641 sess->s_id = fcport->d_id;
642 sess->loop_id = fcport->loop_id;
643 sess->local = local;
644
645 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
646 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
0e8cd71c 647 sess, vha->vha_tgt.qla_tgt);
2d70c103
NB		 648
649 be_sid[0] = sess->s_id.b.domain;
650 be_sid[1] = sess->s_id.b.area;
651 be_sid[2] = sess->s_id.b.al_pa;
652 /*
653 * Determine if this fc_port->port_name is allowed to access
654 * target mode using explict NodeACLs+MappedLUNs, or using
655 * TPG demo mode. If this is successful a target mode FC nexus
656 * is created.
657 */
658 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
659 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
660 kfree(sess);
661 return NULL;
662 }
663 /*
664 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
665 * access across ->hardware_lock reaquire.
666 */
667 kref_get(&sess->se_sess->sess_kref);
668
c8292d1d 669 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
2d70c103
NB		 670 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
671 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
672
673 spin_lock_irqsave(&ha->hardware_lock, flags);
0e8cd71c
SK		 674 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
675 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103
NB		 676 spin_unlock_irqrestore(&ha->hardware_lock, flags);
677
678 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 679 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
680 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
681 vha->vp_idx, local ? "local " : "", fcport->port_name,
682 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
683 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 684
685 return sess;
686}
687
688/*
689 * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
690 */
691void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
692{
693 struct qla_hw_data *ha = vha->hw;
0e8cd71c 694 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 695 struct qla_tgt_sess *sess;
696 unsigned long flags;
697
698 if (!vha->hw->tgt.tgt_ops)
699 return;
700
701 if (!tgt || (fcport->port_type != FCT_INITIATOR))
702 return;
703
0e8cd71c
SK		 704 if (qla_ini_mode_enabled(vha))
705 return;
706
2d70c103
NB		 707 spin_lock_irqsave(&ha->hardware_lock, flags);
708 if (tgt->tgt_stop) {
709 spin_unlock_irqrestore(&ha->hardware_lock, flags);
710 return;
711 }
712 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
713 if (!sess) {
714 spin_unlock_irqrestore(&ha->hardware_lock, flags);
715
0e8cd71c 716 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 717 sess = qlt_create_sess(vha, fcport, false);
0e8cd71c 718 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 719
720 spin_lock_irqsave(&ha->hardware_lock, flags);
721 } else {
722 kref_get(&sess->se_sess->sess_kref);
723
724 if (sess->deleted) {
725 qlt_undelete_sess(sess);
726
727 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
7b833558
OK		 728 "qla_target(%u): %ssession for port %8phC "
729 "(loop ID %d) reappeared\n", vha->vp_idx,
730 sess->local ? "local " : "", sess->port_name,
2d70c103
NB		 731 sess->loop_id);
732
733 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
734 "Reappeared sess %p\n", sess);
735 }
c8292d1d
RD		 736 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
737 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
2d70c103
NB		 738 }
739
740 if (sess && sess->local) {
741 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
742 "qla_target(%u): local session for "
7b833558
OK		 743 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
744 fcport->port_name, sess->loop_id);
2d70c103
NB		 745 sess->local = 0;
746 }
2d70c103 747 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 748 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 749}
750
751void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
752{
753 struct qla_hw_data *ha = vha->hw;
0e8cd71c 754 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 755 struct qla_tgt_sess *sess;
756 unsigned long flags;
757
758 if (!vha->hw->tgt.tgt_ops)
759 return;
760
761 if (!tgt || (fcport->port_type != FCT_INITIATOR))
762 return;
763
764 spin_lock_irqsave(&ha->hardware_lock, flags);
765 if (tgt->tgt_stop) {
766 spin_unlock_irqrestore(&ha->hardware_lock, flags);
767 return;
768 }
769 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
770 if (!sess) {
771 spin_unlock_irqrestore(&ha->hardware_lock, flags);
772 return;
773 }
774
775 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
776
777 sess->local = 1;
778 qlt_schedule_sess_for_deletion(sess, false);
779 spin_unlock_irqrestore(&ha->hardware_lock, flags);
780}
781
782static inline int test_tgt_sess_count(struct qla_tgt *tgt)
783{
784 struct qla_hw_data *ha = tgt->ha;
785 unsigned long flags;
786 int res;
787 /*
788 * We need to protect against race, when tgt is freed before or
789 * inside wake_up()
790 */
791 spin_lock_irqsave(&ha->hardware_lock, flags);
792 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
793 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
794 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
795 res = (tgt->sess_count == 0);
796 spin_unlock_irqrestore(&ha->hardware_lock, flags);
797
798 return res;
799}
800
801/* Called by tcm_qla2xxx configfs code */
3c231bda 802int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 803{
804 struct scsi_qla_host *vha = tgt->vha;
805 struct qla_hw_data *ha = tgt->ha;
806 unsigned long flags;
807
3c231bda
NB		 808 mutex_lock(&qla_tgt_mutex);
809 if (!vha->fc_vport) {
810 struct Scsi_Host *sh = vha->host;
811 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
812 bool npiv_vports;
813
814 spin_lock_irqsave(sh->host_lock, flags);
815 npiv_vports = (fc_host->npiv_vports_inuse);
816 spin_unlock_irqrestore(sh->host_lock, flags);
817
818 if (npiv_vports) {
819 mutex_unlock(&qla_tgt_mutex);
820 return -EPERM;
821 }
822 }
2d70c103
NB		 823 if (tgt->tgt_stop || tgt->tgt_stopped) {
824 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
825 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 826 mutex_unlock(&qla_tgt_mutex);
827 return -EPERM;
2d70c103
NB		 828 }
829
830 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
831 vha->host_no, vha);
832 /*
833 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
834 * Lock is needed, because we still can get an incoming packet.
835 */
0e8cd71c 836 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 837 spin_lock_irqsave(&ha->hardware_lock, flags);
838 tgt->tgt_stop = 1;
839 qlt_clear_tgt_db(tgt, true);
840 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 841 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 842 mutex_unlock(&qla_tgt_mutex);
2d70c103 843
43829731 844 flush_delayed_work(&tgt->sess_del_work);
2d70c103
NB		 845
846 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
847 "Waiting for sess works (tgt %p)", tgt);
848 spin_lock_irqsave(&tgt->sess_work_lock, flags);
849 while (!list_empty(&tgt->sess_works_list)) {
850 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
851 flush_scheduled_work();
852 spin_lock_irqsave(&tgt->sess_work_lock, flags);
853 }
854 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
855
856 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
857 "Waiting for tgt %p: list_empty(sess_list)=%d "
858 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
859 tgt->sess_count);
860
861 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
862
863 /* Big hammer */
864 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
865 qlt_disable_vha(vha);
866
867 /* Wait for sessions to clear out (just in case) */
868 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 869 return 0;
2d70c103
NB		 870}
871EXPORT_SYMBOL(qlt_stop_phase1);
872
873/* Called by tcm_qla2xxx configfs code */
874void qlt_stop_phase2(struct qla_tgt *tgt)
875{
876 struct qla_hw_data *ha = tgt->ha;
0e8cd71c 877 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 878 unsigned long flags;
879
880 if (tgt->tgt_stopped) {
0e8cd71c 881 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 882 "Already in tgt->tgt_stopped state\n");
883 dump_stack();
884 return;
885 }
886
0e8cd71c 887 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
2d70c103
NB		 888 "Waiting for %d IRQ commands to complete (tgt %p)",
889 tgt->irq_cmd_count, tgt);
890
0e8cd71c 891 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 892 spin_lock_irqsave(&ha->hardware_lock, flags);
893 while (tgt->irq_cmd_count != 0) {
894 spin_unlock_irqrestore(&ha->hardware_lock, flags);
895 udelay(2);
896 spin_lock_irqsave(&ha->hardware_lock, flags);
897 }
898 tgt->tgt_stop = 0;
899 tgt->tgt_stopped = 1;
900 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 901 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 902
0e8cd71c 903 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
2d70c103
NB		 904 tgt);
905}
906EXPORT_SYMBOL(qlt_stop_phase2);
907
908/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 909static void qlt_release(struct qla_tgt *tgt)
2d70c103 910{
0e8cd71c 911 scsi_qla_host_t *vha = tgt->vha;
2d70c103 912
0e8cd71c 913 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 914 qlt_stop_phase2(tgt);
915
0e8cd71c 916 vha->vha_tgt.qla_tgt = NULL;
2d70c103 917
0e8cd71c 918 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 919 "Release of tgt %p finished\n", tgt);
920
921 kfree(tgt);
922}
923
924/* ha->hardware_lock supposed to be held on entry */
925static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
926 const void *param, unsigned int param_size)
927{
928 struct qla_tgt_sess_work_param *prm;
929 unsigned long flags;
930
931 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
932 if (!prm) {
933 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
934 "qla_target(%d): Unable to create session "
935 "work, command will be refused", 0);
936 return -ENOMEM;
937 }
938
939 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
940 "Scheduling work (type %d, prm %p)"
941 " to find session for param %p (size %d, tgt %p)\n",
942 type, prm, param, param_size, tgt);
943
944 prm->type = type;
945 memcpy(&prm->tm_iocb, param, param_size);
946
947 spin_lock_irqsave(&tgt->sess_work_lock, flags);
948 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
949 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
950
951 schedule_work(&tgt->sess_work);
952
953 return 0;
954}
955
956/*
957 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
958 */
959static void qlt_send_notify_ack(struct scsi_qla_host *vha,
960 struct imm_ntfy_from_isp *ntfy,
961 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
962 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
963{
964 struct qla_hw_data *ha = vha->hw;
965 request_t *pkt;
966 struct nack_to_isp *nack;
967
968 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
969
970 /* Send marker if required */
971 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
972 return;
973
974 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
975 if (!pkt) {
976 ql_dbg(ql_dbg_tgt, vha, 0xe049,
977 "qla_target(%d): %s failed: unable to allocate "
978 "request packet\n", vha->vp_idx, __func__);
979 return;
980 }
981
0e8cd71c
SK		 982 if (vha->vha_tgt.qla_tgt != NULL)
983 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 984
985 pkt->entry_type = NOTIFY_ACK_TYPE;
986 pkt->entry_count = 1;
987
988 nack = (struct nack_to_isp *)pkt;
989 nack->ox_id = ntfy->ox_id;
990
991 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
992 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
993 nack->u.isp24.flags = ntfy->u.isp24.flags &
994 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
995 }
996 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
997 nack->u.isp24.status = ntfy->u.isp24.status;
998 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 999 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1000 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1001 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1002 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1003 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1004 nack->u.isp24.srr_reject_code = srr_reject_code;
1005 nack->u.isp24.srr_reject_code_expl = srr_explan;
1006 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1007
1008 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1009 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1010 vha->vp_idx, nack->u.isp24.status);
1011
1012 qla2x00_start_iocbs(vha, vha->req);
1013}
1014
1015/*
1016 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1017 */
1018static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1019 struct abts_recv_from_24xx *abts, uint32_t status,
1020 bool ids_reversed)
1021{
1022 struct qla_hw_data *ha = vha->hw;
1023 struct abts_resp_to_24xx *resp;
1024 uint32_t f_ctl;
1025 uint8_t *p;
1026
1027 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1028 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1029 ha, abts, status);
1030
1031 /* Send marker if required */
1032 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1033 return;
1034
1035 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1036 if (!resp) {
1037 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1038 "qla_target(%d): %s failed: unable to allocate "
1039 "request packet", vha->vp_idx, __func__);
1040 return;
1041 }
1042
1043 resp->entry_type = ABTS_RESP_24XX;
1044 resp->entry_count = 1;
1045 resp->nport_handle = abts->nport_handle;
1046 resp->vp_index = vha->vp_idx;
1047 resp->sof_type = abts->sof_type;
1048 resp->exchange_address = abts->exchange_address;
1049 resp->fcp_hdr_le = abts->fcp_hdr_le;
1050 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1051 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1052 F_CTL_SEQ_INITIATIVE);
1053 p = (uint8_t *)&f_ctl;
1054 resp->fcp_hdr_le.f_ctl[0] = *p++;
1055 resp->fcp_hdr_le.f_ctl[1] = *p++;
1056 resp->fcp_hdr_le.f_ctl[2] = *p;
1057 if (ids_reversed) {
1058 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1059 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1060 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1061 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1062 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1063 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1064 } else {
1065 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1066 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1067 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1068 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1069 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1070 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1071 }
1072 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1073 if (status == FCP_TMF_CMPL) {
1074 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1075 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1076 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1077 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1078 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1079 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1080 } else {
1081 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1082 resp->payload.ba_rjt.reason_code =
1083 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1084 /* Other bytes are zero */
1085 }
1086
0e8cd71c 1087 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103
NB		 1088
1089 qla2x00_start_iocbs(vha, vha->req);
1090}
1091
1092/*
1093 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1094 */
1095static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1096 struct abts_resp_from_24xx_fw *entry)
1097{
1098 struct ctio7_to_24xx *ctio;
1099
1100 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1101 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1102 /* Send marker if required */
1103 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1104 return;
1105
1106 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1107 if (ctio == NULL) {
1108 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1109 "qla_target(%d): %s failed: unable to allocate "
1110 "request packet\n", vha->vp_idx, __func__);
1111 return;
1112 }
1113
1114 /*
1115 * We've got on entrance firmware's response on by us generated
1116 * ABTS response. So, in it ID fields are reversed.
1117 */
1118
1119 ctio->entry_type = CTIO_TYPE7;
1120 ctio->entry_count = 1;
1121 ctio->nport_handle = entry->nport_handle;
1122 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1123 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1124 ctio->vp_index = vha->vp_idx;
1125 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1126 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1127 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1128 ctio->exchange_addr = entry->exchange_addr_to_abort;
1129 ctio->u.status1.flags =
1130 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1131 CTIO7_FLAGS_TERMINATE);
1132 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
1133
1134 qla2x00_start_iocbs(vha, vha->req);
1135
1136 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1137 FCP_TMF_CMPL, true);
1138}
1139
1140/* ha->hardware_lock supposed to be held on entry */
1141static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1142 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1143{
1144 struct qla_hw_data *ha = vha->hw;
06e97b48 1145 struct se_session *se_sess = sess->se_sess;
2d70c103 1146 struct qla_tgt_mgmt_cmd *mcmd;
06e97b48
SH		 1147 struct se_cmd *se_cmd;
1148 u32 lun = 0;
2d70c103 1149 int rc;
06e97b48
SH		 1150 bool found_lun = false;
1151
1152 spin_lock(&se_sess->sess_cmd_lock);
1153 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1154 struct qla_tgt_cmd *cmd =
1155 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1156 if (cmd->tag == abts->exchange_addr_to_abort) {
1157 lun = cmd->unpacked_lun;
1158 found_lun = true;
1159 break;
1160 }
1161 }
1162 spin_unlock(&se_sess->sess_cmd_lock);
1163
1164 if (!found_lun)
1165 return -ENOENT;
2d70c103
NB		 1166
1167 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1168 "qla_target(%d): task abort (tag=%d)\n",
1169 vha->vp_idx, abts->exchange_addr_to_abort);
1170
1171 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1172 if (mcmd == NULL) {
1173 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1174 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1175 vha->vp_idx, __func__);
1176 return -ENOMEM;
1177 }
1178 memset(mcmd, 0, sizeof(*mcmd));
1179
1180 mcmd->sess = sess;
1181 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1182
06e97b48 1183 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
2d70c103
NB		 1184 abts->exchange_addr_to_abort);
1185 if (rc != 0) {
1186 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1187 "qla_target(%d): tgt_ops->handle_tmr()"
1188 " failed: %d", vha->vp_idx, rc);
1189 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1190 return -EFAULT;
1191 }
1192
1193 return 0;
1194}
1195
1196/*
1197 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1198 */
1199static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1200 struct abts_recv_from_24xx *abts)
1201{
1202 struct qla_hw_data *ha = vha->hw;
1203 struct qla_tgt_sess *sess;
1204 uint32_t tag = abts->exchange_addr_to_abort;
1205 uint8_t s_id[3];
1206 int rc;
1207
1208 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1209 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1210 "qla_target(%d): ABTS: Abort Sequence not "
1211 "supported\n", vha->vp_idx);
1212 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1213 return;
1214 }
1215
1216 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1217 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1218 "qla_target(%d): ABTS: Unknown Exchange "
1219 "Address received\n", vha->vp_idx);
1220 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1221 return;
1222 }
1223
1224 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1225 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1226 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1227 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1228 le32_to_cpu(abts->fcp_hdr_le.parameter));
1229
1230 s_id[0] = abts->fcp_hdr_le.s_id[2];
1231 s_id[1] = abts->fcp_hdr_le.s_id[1];
1232 s_id[2] = abts->fcp_hdr_le.s_id[0];
1233
1234 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1235 if (!sess) {
1236 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1237 "qla_target(%d): task abort for non-existant session\n",
1238 vha->vp_idx);
0e8cd71c 1239 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 1240 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1241 if (rc != 0) {
1242 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1243 false);
1244 }
1245 return;
1246 }
1247
1248 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1249 if (rc != 0) {
1250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1251 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1252 vha->vp_idx, rc);
1253 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1254 return;
1255 }
1256}
1257
1258/*
1259 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1260 */
1261static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1262 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1263{
1264 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1265 struct ctio7_to_24xx *ctio;
1266
1267 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1268 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1269 ha, atio, resp_code);
1270
1271 /* Send marker if required */
1272 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1273 return;
1274
1275 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1276 if (ctio == NULL) {
1277 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1278 "qla_target(%d): %s failed: unable to allocate "
1279 "request packet\n", ha->vp_idx, __func__);
1280 return;
1281 }
1282
1283 ctio->entry_type = CTIO_TYPE7;
1284 ctio->entry_count = 1;
1285 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1286 ctio->nport_handle = mcmd->sess->loop_id;
1287 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1288 ctio->vp_index = ha->vp_idx;
1289 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1290 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1291 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1292 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1293 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1294 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1295 CTIO7_FLAGS_SEND_STATUS);
1296 ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1297 ctio->u.status1.scsi_status =
1298 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1299 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
e4b11b89 1300 ctio->u.status1.sense_data[0] = resp_code;
2d70c103
NB		 1301
1302 qla2x00_start_iocbs(ha, ha->req);
1303}
1304
1305void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1306{
1307 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1308}
1309EXPORT_SYMBOL(qlt_free_mcmd);
1310
1311/* callback from target fabric module code */
1312void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1313{
1314 struct scsi_qla_host *vha = mcmd->sess->vha;
1315 struct qla_hw_data *ha = vha->hw;
1316 unsigned long flags;
1317
1318 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1319 "TM response mcmd (%p) status %#x state %#x",
1320 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1321
1322 spin_lock_irqsave(&ha->hardware_lock, flags);
1323 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1324 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1325 0, 0, 0, 0, 0, 0);
1326 else {
1327 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1328 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1329 mcmd->fc_tm_rsp, false);
1330 else
1331 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1332 mcmd->fc_tm_rsp);
1333 }
1334 /*
1335 * Make the callback for ->free_mcmd() to queue_work() and invoke
1336 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1337 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1338 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1339 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1340 * qlt_xmit_tm_rsp() returns here..
1341 */
1342 ha->tgt.tgt_ops->free_mcmd(mcmd);
1343 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1344}
1345EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1346
1347/* No locks */
1348static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1349{
1350 struct qla_tgt_cmd *cmd = prm->cmd;
1351
1352 BUG_ON(cmd->sg_cnt == 0);
1353
1354 prm->sg = (struct scatterlist *)cmd->sg;
1355 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1356 cmd->sg_cnt, cmd->dma_data_direction);
1357 if (unlikely(prm->seg_cnt == 0))
1358 goto out_err;
1359
1360 prm->cmd->sg_mapped = 1;
1361
f83adb61
QT		 1362 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1363 /*
1364 * If greater than four sg entries then we need to allocate
1365 * the continuation entries
1366 */
1367 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1368 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1369 prm->tgt->datasegs_per_cmd,
1370 prm->tgt->datasegs_per_cont);
1371 } else {
1372 /* DIF */
1373 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1374 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1375 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1376 prm->tot_dsds = prm->seg_cnt;
1377 } else
1378 prm->tot_dsds = prm->seg_cnt;
1379
1380 if (cmd->prot_sg_cnt) {
1381 prm->prot_sg = cmd->prot_sg;
1382 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1383 cmd->prot_sg, cmd->prot_sg_cnt,
1384 cmd->dma_data_direction);
1385 if (unlikely(prm->prot_seg_cnt == 0))
1386 goto out_err;
1387
1388 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1389 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1390 /* Dif Bundling not support here */
1391 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1392 cmd->blk_sz);
1393 prm->tot_dsds += prm->prot_seg_cnt;
1394 } else
1395 prm->tot_dsds += prm->prot_seg_cnt;
1396 }
1397 }
2d70c103
NB		 1398
1399 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
1400 prm->seg_cnt, prm->req_cnt);
1401 return 0;
1402
1403out_err:
1404 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1405 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1406 0, prm->cmd->sg_cnt);
1407 return -1;
1408}
1409
1410static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
1411 struct qla_tgt_cmd *cmd)
1412{
1413 struct qla_hw_data *ha = vha->hw;
1414
1415 BUG_ON(!cmd->sg_mapped);
1416 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1417 cmd->sg_mapped = 0;
f83adb61
QT		 1418
1419 if (cmd->prot_sg_cnt)
1420 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1421 cmd->dma_data_direction);
1422
1423 if (cmd->ctx_dsd_alloced)
1424 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1425
1426 if (cmd->ctx)
1427 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 1428}
1429
1430static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1431 uint32_t req_cnt)
1432{
1433 struct qla_hw_data *ha = vha->hw;
1434 device_reg_t __iomem *reg = ha->iobase;
1435 uint32_t cnt;
1436
1437 if (vha->req->cnt < (req_cnt + 2)) {
1438 cnt = (uint16_t)RD_REG_DWORD(&reg->isp24.req_q_out);
1439
1440 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
1441 "Request ring circled: cnt=%d, vha->->ring_index=%d, "
1442 "vha->req->cnt=%d, req_cnt=%d\n", cnt,
1443 vha->req->ring_index, vha->req->cnt, req_cnt);
1444 if (vha->req->ring_index < cnt)
1445 vha->req->cnt = cnt - vha->req->ring_index;
1446 else
1447 vha->req->cnt = vha->req->length -
1448 (vha->req->ring_index - cnt);
1449 }
1450
1451 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1452 ql_dbg(ql_dbg_tgt, vha, 0xe00b,
1453 "qla_target(%d): There is no room in the "
1454 "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
1455 "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
1456 vha->req->cnt, req_cnt);
1457 return -EAGAIN;
1458 }
1459 vha->req->cnt -= req_cnt;
1460
1461 return 0;
1462}
1463
1464/*
1465 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1466 */
1467static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1468{
1469 /* Adjust ring index. */
1470 vha->req->ring_index++;
1471 if (vha->req->ring_index == vha->req->length) {
1472 vha->req->ring_index = 0;
1473 vha->req->ring_ptr = vha->req->ring;
1474 } else {
1475 vha->req->ring_ptr++;
1476 }
1477 return (cont_entry_t *)vha->req->ring_ptr;
1478}
1479
1480/* ha->hardware_lock supposed to be held on entry */
1481static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1482{
1483 struct qla_hw_data *ha = vha->hw;
1484 uint32_t h;
1485
1486 h = ha->tgt.current_handle;
1487 /* always increment cmd handle */
1488 do {
1489 ++h;
8d93f550 1490 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 1491 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1492 if (h == ha->tgt.current_handle) {
1493 ql_dbg(ql_dbg_tgt, vha, 0xe04e,
1494 "qla_target(%d): Ran out of "
1495 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1496 h = QLA_TGT_NULL_HANDLE;
1497 break;
1498 }
1499 } while ((h == QLA_TGT_NULL_HANDLE) ||
1500 (h == QLA_TGT_SKIP_HANDLE) ||
1501 (ha->tgt.cmds[h-1] != NULL));
1502
1503 if (h != QLA_TGT_NULL_HANDLE)
1504 ha->tgt.current_handle = h;
1505
1506 return h;
1507}
1508
1509/* ha->hardware_lock supposed to be held on entry */
1510static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1511 struct scsi_qla_host *vha)
1512{
1513 uint32_t h;
1514 struct ctio7_to_24xx *pkt;
1515 struct qla_hw_data *ha = vha->hw;
1516 struct atio_from_isp *atio = &prm->cmd->atio;
1517
1518 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1519 prm->pkt = pkt;
1520 memset(pkt, 0, sizeof(*pkt));
1521
1522 pkt->entry_type = CTIO_TYPE7;
1523 pkt->entry_count = (uint8_t)prm->req_cnt;
1524 pkt->vp_index = vha->vp_idx;
1525
1526 h = qlt_make_handle(vha);
1527 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1528 /*
1529 * CTIO type 7 from the firmware doesn't provide a way to
1530 * know the initiator's LOOP ID, hence we can't find
1531 * the session and, so, the command.
1532 */
1533 return -EAGAIN;
1534 } else
1535 ha->tgt.cmds[h-1] = prm->cmd;
1536
1537 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1538 pkt->nport_handle = prm->cmd->loop_id;
1539 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1540 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1541 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1542 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1543 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1544 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
1545 pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1546 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1547
1548 ql_dbg(ql_dbg_tgt, vha, 0xe00c,
1549 "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
1550 vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT,
1551 le16_to_cpu(pkt->u.status0.ox_id));
1552 return 0;
1553}
1554
1555/*
1556 * ha->hardware_lock supposed to be held on entry. We have already made sure
1557 * that there is sufficient amount of request entries to not drop it.
1558 */
1559static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1560 struct scsi_qla_host *vha)
1561{
1562 int cnt;
1563 uint32_t *dword_ptr;
1564 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1565
1566 /* Build continuation packets */
1567 while (prm->seg_cnt > 0) {
1568 cont_a64_entry_t *cont_pkt64 =
1569 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1570
1571 /*
1572 * Make sure that from cont_pkt64 none of
1573 * 64-bit specific fields used for 32-bit
1574 * addressing. Cast to (cont_entry_t *) for
1575 * that.
1576 */
1577
1578 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1579
1580 cont_pkt64->entry_count = 1;
1581 cont_pkt64->sys_define = 0;
1582
1583 if (enable_64bit_addressing) {
1584 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1585 dword_ptr =
1586 (uint32_t *)&cont_pkt64->dseg_0_address;
1587 } else {
1588 cont_pkt64->entry_type = CONTINUE_TYPE;
1589 dword_ptr =
1590 (uint32_t *)&((cont_entry_t *)
1591 cont_pkt64)->dseg_0_address;
1592 }
1593
1594 /* Load continuation entry data segments */
1595 for (cnt = 0;
1596 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1597 cnt++, prm->seg_cnt--) {
1598 *dword_ptr++ =
1599 cpu_to_le32(pci_dma_lo32
1600 (sg_dma_address(prm->sg)));
1601 if (enable_64bit_addressing) {
1602 *dword_ptr++ =
1603 cpu_to_le32(pci_dma_hi32
1604 (sg_dma_address
1605 (prm->sg)));
1606 }
1607 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1608
1609 ql_dbg(ql_dbg_tgt, vha, 0xe00d,
1610 "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
1611 (long long unsigned int)
1612 pci_dma_hi32(sg_dma_address(prm->sg)),
1613 (long long unsigned int)
1614 pci_dma_lo32(sg_dma_address(prm->sg)),
1615 (int)sg_dma_len(prm->sg));
1616
1617 prm->sg = sg_next(prm->sg);
1618 }
1619 }
1620}
1621
1622/*
1623 * ha->hardware_lock supposed to be held on entry. We have already made sure
1624 * that there is sufficient amount of request entries to not drop it.
1625 */
1626static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1627 struct scsi_qla_host *vha)
1628{
1629 int cnt;
1630 uint32_t *dword_ptr;
1631 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1632 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1633
1634 ql_dbg(ql_dbg_tgt, vha, 0xe00e,
1635 "iocb->scsi_status=%x, iocb->flags=%x\n",
1636 le16_to_cpu(pkt24->u.status0.scsi_status),
1637 le16_to_cpu(pkt24->u.status0.flags));
1638
1639 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1640
1641 /* Setup packet address segment pointer */
1642 dword_ptr = pkt24->u.status0.dseg_0_address;
1643
1644 /* Set total data segment count */
1645 if (prm->seg_cnt)
1646 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1647
1648 if (prm->seg_cnt == 0) {
1649 /* No data transfer */
1650 *dword_ptr++ = 0;
1651 *dword_ptr = 0;
1652 return;
1653 }
1654
1655 /* If scatter gather */
1656 ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
1657
1658 /* Load command entry data segments */
1659 for (cnt = 0;
1660 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1661 cnt++, prm->seg_cnt--) {
1662 *dword_ptr++ =
1663 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1664 if (enable_64bit_addressing) {
1665 *dword_ptr++ =
1666 cpu_to_le32(pci_dma_hi32(
1667 sg_dma_address(prm->sg)));
1668 }
1669 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1670
1671 ql_dbg(ql_dbg_tgt, vha, 0xe010,
1672 "S/G Segment phys_addr=%llx:%llx, len=%d\n",
1673 (long long unsigned int)pci_dma_hi32(sg_dma_address(
1674 prm->sg)),
1675 (long long unsigned int)pci_dma_lo32(sg_dma_address(
1676 prm->sg)),
1677 (int)sg_dma_len(prm->sg));
1678
1679 prm->sg = sg_next(prm->sg);
1680 }
1681
1682 qlt_load_cont_data_segments(prm, vha);
1683}
1684
1685static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1686{
1687 return cmd->bufflen > 0;
1688}
1689
1690/*
1691 * Called without ha->hardware_lock held
1692 */
1693static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1694 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1695 uint32_t *full_req_cnt)
1696{
1697 struct qla_tgt *tgt = cmd->tgt;
1698 struct scsi_qla_host *vha = tgt->vha;
1699 struct qla_hw_data *ha = vha->hw;
1700 struct se_cmd *se_cmd = &cmd->se_cmd;
1701
1702 if (unlikely(cmd->aborted)) {
1703 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1704 "qla_target(%d): terminating exchange "
1705 "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
1706 se_cmd, cmd->tag);
1707
1708 cmd->state = QLA_TGT_STATE_ABORTED;
1709
1710 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1711
1712 /* !! At this point cmd could be already freed !! */
1713 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1714 }
1715
f83adb61
QT		 1716 ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u ox_id %04x\n",
1717 vha->vp_idx, cmd->tag,
1718 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103
NB		 1719
1720 prm->cmd = cmd;
1721 prm->tgt = tgt;
1722 prm->rq_result = scsi_status;
1723 prm->sense_buffer = &cmd->sense_buffer[0];
1724 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1725 prm->sg = NULL;
1726 prm->seg_cnt = -1;
1727 prm->req_cnt = 1;
1728 prm->add_status_pkt = 0;
1729
1730 ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
1731 prm->rq_result, xmit_type);
1732
1733 /* Send marker if required */
1734 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1735 return -EFAULT;
1736
1737 ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
1738
1739 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1740 if (qlt_pci_map_calc_cnt(prm) != 0)
1741 return -EAGAIN;
1742 }
1743
1744 *full_req_cnt = prm->req_cnt;
1745
1746 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1747 prm->residual = se_cmd->residual_count;
1748 ql_dbg(ql_dbg_tgt, vha, 0xe014,
1749 "Residual underflow: %d (tag %d, "
1750 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1751 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1752 cmd->bufflen, prm->rq_result);
1753 prm->rq_result |= SS_RESIDUAL_UNDER;
1754 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1755 prm->residual = se_cmd->residual_count;
1756 ql_dbg(ql_dbg_tgt, vha, 0xe015,
1757 "Residual overflow: %d (tag %d, "
1758 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1759 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1760 cmd->bufflen, prm->rq_result);
1761 prm->rq_result |= SS_RESIDUAL_OVER;
1762 }
1763
1764 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1765 /*
1766 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1767 * ignored in *xmit_response() below
1768 */
1769 if (qlt_has_data(cmd)) {
1770 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1771 (IS_FWI2_CAPABLE(ha) &&
1772 (prm->rq_result != 0))) {
1773 prm->add_status_pkt = 1;
1774 (*full_req_cnt)++;
1775 }
1776 }
1777 }
1778
1779 ql_dbg(ql_dbg_tgt, vha, 0xe016,
1780 "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
1781 prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
1782
1783 return 0;
1784}
1785
1786static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1787 struct qla_tgt_cmd *cmd, int sending_sense)
1788{
1789 if (ha->tgt.enable_class_2)
1790 return 0;
1791
1792 if (sending_sense)
1793 return cmd->conf_compl_supported;
1794 else
1795 return ha->tgt.enable_explicit_conf &&
1796 cmd->conf_compl_supported;
1797}
1798
1799#ifdef CONFIG_QLA_TGT_DEBUG_SRR
1800/*
1801 * Original taken from the XFS code
1802 */
1803static unsigned long qlt_srr_random(void)
1804{
1805 static int Inited;
1806 static unsigned long RandomValue;
1807 static DEFINE_SPINLOCK(lock);
1808 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1809 register long rv;
1810 register long lo;
1811 register long hi;
1812 unsigned long flags;
1813
1814 spin_lock_irqsave(&lock, flags);
1815 if (!Inited) {
1816 RandomValue = jiffies;
1817 Inited = 1;
1818 }
1819 rv = RandomValue;
1820 hi = rv / 127773;
1821 lo = rv % 127773;
1822 rv = 16807 * lo - 2836 * hi;
1823 if (rv <= 0)
1824 rv += 2147483647;
1825 RandomValue = rv;
1826 spin_unlock_irqrestore(&lock, flags);
1827 return rv;
1828}
1829
1830static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1831{
1832#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1833 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1834 == 50) {
1835 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1836 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1837 "Dropping cmd %p (tag %d) status", cmd, cmd->tag);
1838 }
1839#endif
1840 /*
1841 * It's currently not possible to simulate SRRs for FCP_WRITE without
1842 * a physical link layer failure, so don't even try here..
1843 */
1844 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1845 return;
1846
1847 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1848 ((qlt_srr_random() % 100) == 20)) {
1849 int i, leave = 0;
1850 unsigned int tot_len = 0;
1851
1852 while (leave == 0)
1853 leave = qlt_srr_random() % cmd->sg_cnt;
1854
1855 for (i = 0; i < leave; i++)
1856 tot_len += cmd->sg[i].length;
1857
1858 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1859 "Cutting cmd %p (tag %d) buffer"
1860 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1861 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
1862 cmd->bufflen, cmd->sg_cnt);
1863
1864 cmd->bufflen = tot_len;
1865 cmd->sg_cnt = leave;
1866 }
1867
1868 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1869 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1870
1871 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1872 "Cutting cmd %p (tag %d) buffer head "
1873 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
1874 cmd->bufflen);
1875 if (offset == 0)
1876 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1877 else if (qlt_set_data_offset(cmd, offset)) {
1878 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1879 "qlt_set_data_offset() failed (tag %d)", cmd->tag);
1880 }
1881 }
1882}
1883#else
1884static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1885{}
1886#endif
1887
1888static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1889 struct qla_tgt_prm *prm)
1890{
1891 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1892 (uint32_t)sizeof(ctio->u.status1.sense_data));
1893 ctio->u.status0.flags |=
1894 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1895 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1896 ctio->u.status0.flags |= __constant_cpu_to_le16(
1897 CTIO7_FLAGS_EXPLICIT_CONFORM |
1898 CTIO7_FLAGS_CONFORM_REQ);
1899 }
1900 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1901 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1902 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1903 int i;
1904
1905 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1906 if (prm->cmd->se_cmd.scsi_status != 0) {
1907 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1908 "Skipping EXPLICIT_CONFORM and "
1909 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1910 "non GOOD status\n");
1911 goto skip_explict_conf;
1912 }
1913 ctio->u.status1.flags |= __constant_cpu_to_le16(
1914 CTIO7_FLAGS_EXPLICIT_CONFORM |
1915 CTIO7_FLAGS_CONFORM_REQ);
1916 }
1917skip_explict_conf:
1918 ctio->u.status1.flags &=
1919 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1920 ctio->u.status1.flags |=
1921 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1922 ctio->u.status1.scsi_status |=
1923 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1924 ctio->u.status1.sense_length =
1925 cpu_to_le16(prm->sense_buffer_len);
1926 for (i = 0; i < prm->sense_buffer_len/4; i++)
1927 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1928 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1929#if 0
1930 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
1931 static int q;
1932 if (q < 10) {
1933 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
1934 "qla_target(%d): %d bytes of sense "
1935 "lost", prm->tgt->ha->vp_idx,
1936 prm->sense_buffer_len % 4);
1937 q++;
1938 }
1939 }
1940#endif
1941 } else {
1942 ctio->u.status1.flags &=
1943 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1944 ctio->u.status1.flags |=
1945 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1946 ctio->u.status1.sense_length = 0;
1947 memset(ctio->u.status1.sense_data, 0,
1948 sizeof(ctio->u.status1.sense_data));
1949 }
1950
1951 /* Sense with len > 24, is it possible ??? */
1952}
1953
f83adb61
QT		 1954
1955
1956/* diff */
1957static inline int
1958qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
1959{
1960 /*
1961 * Uncomment when corresponding SCSI changes are done.
1962 *
1963 if (!sp->cmd->prot_chk)
1964 return 0;
1965 *
1966 */
1967 switch (se_cmd->prot_op) {
1968 case TARGET_PROT_DOUT_INSERT:
1969 case TARGET_PROT_DIN_STRIP:
1970 if (ql2xenablehba_err_chk >= 1)
1971 return 1;
1972 break;
1973 case TARGET_PROT_DOUT_PASS:
1974 case TARGET_PROT_DIN_PASS:
1975 if (ql2xenablehba_err_chk >= 2)
1976 return 1;
1977 break;
1978 case TARGET_PROT_DIN_INSERT:
1979 case TARGET_PROT_DOUT_STRIP:
1980 return 1;
1981 default:
1982 break;
1983 }
1984 return 0;
1985}
1986
1987/*
1988 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
1989 *
1990 */
1991static inline void
1992qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
1993{
1994 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
1995
1996 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
1997 * have been immplemented by TCM, before AppTag is avail.
1998 * Look for modesense_handlers[]
1999 */
2000 ctx->app_tag = __constant_cpu_to_le16(0);
2001 ctx->app_tag_mask[0] = 0x0;
2002 ctx->app_tag_mask[1] = 0x0;
2003
2004 switch (se_cmd->prot_type) {
2005 case TARGET_DIF_TYPE0_PROT:
2006 /*
2007 * No check for ql2xenablehba_err_chk, as it would be an
2008 * I/O error if hba tag generation is not done.
2009 */
2010 ctx->ref_tag = cpu_to_le32(lba);
2011
2012 if (!qlt_hba_err_chk_enabled(se_cmd))
2013 break;
2014
2015 /* enable ALL bytes of the ref tag */
2016 ctx->ref_tag_mask[0] = 0xff;
2017 ctx->ref_tag_mask[1] = 0xff;
2018 ctx->ref_tag_mask[2] = 0xff;
2019 ctx->ref_tag_mask[3] = 0xff;
2020 break;
2021 /*
2022 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2023 * 16 bit app tag.
2024 */
2025 case TARGET_DIF_TYPE1_PROT:
2026 ctx->ref_tag = cpu_to_le32(lba);
2027
2028 if (!qlt_hba_err_chk_enabled(se_cmd))
2029 break;
2030
2031 /* enable ALL bytes of the ref tag */
2032 ctx->ref_tag_mask[0] = 0xff;
2033 ctx->ref_tag_mask[1] = 0xff;
2034 ctx->ref_tag_mask[2] = 0xff;
2035 ctx->ref_tag_mask[3] = 0xff;
2036 break;
2037 /*
2038 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2039 * match LBA in CDB + N
2040 */
2041 case TARGET_DIF_TYPE2_PROT:
2042 ctx->ref_tag = cpu_to_le32(lba);
2043
2044 if (!qlt_hba_err_chk_enabled(se_cmd))
2045 break;
2046
2047 /* enable ALL bytes of the ref tag */
2048 ctx->ref_tag_mask[0] = 0xff;
2049 ctx->ref_tag_mask[1] = 0xff;
2050 ctx->ref_tag_mask[2] = 0xff;
2051 ctx->ref_tag_mask[3] = 0xff;
2052 break;
2053
2054 /* For Type 3 protection: 16 bit GUARD only */
2055 case TARGET_DIF_TYPE3_PROT:
2056 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2057 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2058 break;
2059 }
2060}
2061
2062
2063static inline int
2064qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2065{
2066 uint32_t *cur_dsd;
2067 int sgc;
2068 uint32_t transfer_length = 0;
2069 uint32_t data_bytes;
2070 uint32_t dif_bytes;
2071 uint8_t bundling = 1;
2072 uint8_t *clr_ptr;
2073 struct crc_context *crc_ctx_pkt = NULL;
2074 struct qla_hw_data *ha;
2075 struct ctio_crc2_to_fw *pkt;
2076 dma_addr_t crc_ctx_dma;
2077 uint16_t fw_prot_opts = 0;
2078 struct qla_tgt_cmd *cmd = prm->cmd;
2079 struct se_cmd *se_cmd = &cmd->se_cmd;
2080 uint32_t h;
2081 struct atio_from_isp *atio = &prm->cmd->atio;
2082
2083 sgc = 0;
2084 ha = vha->hw;
2085
2086 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2087 prm->pkt = pkt;
2088 memset(pkt, 0, sizeof(*pkt));
2089
2090 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2091 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2092 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2093 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2094
2095 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2096 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2097 bundling = 0;
2098
2099 /* Compute dif len and adjust data len to incude protection */
2100 data_bytes = cmd->bufflen;
2101 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2102
2103 switch (se_cmd->prot_op) {
2104 case TARGET_PROT_DIN_INSERT:
2105 case TARGET_PROT_DOUT_STRIP:
2106 transfer_length = data_bytes;
2107 data_bytes += dif_bytes;
2108 break;
2109
2110 case TARGET_PROT_DIN_STRIP:
2111 case TARGET_PROT_DOUT_INSERT:
2112 case TARGET_PROT_DIN_PASS:
2113 case TARGET_PROT_DOUT_PASS:
2114 transfer_length = data_bytes + dif_bytes;
2115 break;
2116
2117 default:
2118 BUG();
2119 break;
2120 }
2121
2122 if (!qlt_hba_err_chk_enabled(se_cmd))
2123 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2124 /* HBA error checking enabled */
2125 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2126 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2127 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2128 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2129 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2130 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2131 }
2132
2133 switch (se_cmd->prot_op) {
2134 case TARGET_PROT_DIN_INSERT:
2135 case TARGET_PROT_DOUT_INSERT:
2136 fw_prot_opts |= PO_MODE_DIF_INSERT;
2137 break;
2138 case TARGET_PROT_DIN_STRIP:
2139 case TARGET_PROT_DOUT_STRIP:
2140 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2141 break;
2142 case TARGET_PROT_DIN_PASS:
2143 case TARGET_PROT_DOUT_PASS:
2144 fw_prot_opts |= PO_MODE_DIF_PASS;
2145 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2146 break;
2147 default:/* Normal Request */
2148 fw_prot_opts |= PO_MODE_DIF_PASS;
2149 break;
2150 }
2151
2152
2153 /* ---- PKT ---- */
2154 /* Update entry type to indicate Command Type CRC_2 IOCB */
2155 pkt->entry_type = CTIO_CRC2;
2156 pkt->entry_count = 1;
2157 pkt->vp_index = vha->vp_idx;
2158
2159 h = qlt_make_handle(vha);
2160 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2161 /*
2162 * CTIO type 7 from the firmware doesn't provide a way to
2163 * know the initiator's LOOP ID, hence we can't find
2164 * the session and, so, the command.
2165 */
2166 return -EAGAIN;
2167 } else
2168 ha->tgt.cmds[h-1] = prm->cmd;
2169
2170
2171 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2172 pkt->nport_handle = prm->cmd->loop_id;
2173 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2174 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2175 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2176 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2177 pkt->exchange_addr = atio->u.isp24.exchange_addr;
2178 pkt->ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
2179 pkt->flags |= (atio->u.isp24.attr << 9);
2180 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2181
2182 /* Set transfer direction */
2183 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2184 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2185 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2186 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2187
2188
2189 pkt->dseg_count = prm->tot_dsds;
2190 /* Fibre channel byte count */
2191 pkt->transfer_length = cpu_to_le32(transfer_length);
2192
2193
2194 /* ----- CRC context -------- */
2195
2196 /* Allocate CRC context from global pool */
2197 crc_ctx_pkt = cmd->ctx =
2198 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2199
2200 if (!crc_ctx_pkt)
2201 goto crc_queuing_error;
2202
2203 /* Zero out CTX area. */
2204 clr_ptr = (uint8_t *)crc_ctx_pkt;
2205 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2206
2207 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2208 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2209
2210 /* Set handle */
2211 crc_ctx_pkt->handle = pkt->handle;
2212
2213 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2214
2215 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2216 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2217 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2218
2219
2220 if (!bundling) {
2221 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2222 } else {
2223 /*
2224 * Configure Bundling if we need to fetch interlaving
2225 * protection PCI accesses
2226 */
2227 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2228 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2229 crc_ctx_pkt->u.bundling.dseg_count =
2230 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2231 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2232 }
2233
2234 /* Finish the common fields of CRC pkt */
2235 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2236 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2237 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
2238 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0);
2239
2240
2241 /* Walks data segments */
2242 pkt->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
2243
2244 if (!bundling && prm->prot_seg_cnt) {
2245 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2246 prm->tot_dsds, cmd))
2247 goto crc_queuing_error;
2248 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2249 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2250 goto crc_queuing_error;
2251
2252 if (bundling && prm->prot_seg_cnt) {
2253 /* Walks dif segments */
2254 pkt->add_flags |=
2255 __constant_cpu_to_le16(CTIO_CRC2_AF_DIF_DSD_ENA);
2256
2257 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2258 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2259 prm->prot_seg_cnt, cmd))
2260 goto crc_queuing_error;
2261 }
2262 return QLA_SUCCESS;
2263
2264crc_queuing_error:
2265 /* Cleanup will be performed by the caller */
2266
2267 return QLA_FUNCTION_FAILED;
2268}
2269
2270
2d70c103
NB		 2271/*
2272 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2273 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2274 */
2275int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2276 uint8_t scsi_status)
2277{
2278 struct scsi_qla_host *vha = cmd->vha;
2279 struct qla_hw_data *ha = vha->hw;
2280 struct ctio7_to_24xx *pkt;
2281 struct qla_tgt_prm prm;
2282 uint32_t full_req_cnt = 0;
2283 unsigned long flags = 0;
2284 int res;
2285
2286 memset(&prm, 0, sizeof(prm));
2287 qlt_check_srr_debug(cmd, &xmit_type);
2288
2289 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 2290 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2291 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2292 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2293 &cmd->se_cmd);
2d70c103
NB		 2294
2295 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2296 &full_req_cnt);
2297 if (unlikely(res != 0)) {
2298 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
2299 return 0;
2300
2301 return res;
2302 }
2303
2304 spin_lock_irqsave(&ha->hardware_lock, flags);
2305
2306 /* Does F/W have an IOCBs for this request */
2307 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2308 if (unlikely(res))
2309 goto out_unmap_unlock;
2310
f83adb61
QT		 2311 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2312 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2313 else
2314 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103
NB		 2315 if (unlikely(res != 0))
2316 goto out_unmap_unlock;
2317
2318
2319 pkt = (struct ctio7_to_24xx *)prm.pkt;
2320
2321 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2322 pkt->u.status0.flags |=
2323 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2324 CTIO7_FLAGS_STATUS_MODE_0);
2325
f83adb61
QT		 2326 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2327 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2328
2329 if (prm.add_status_pkt == 0) {
2330 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2331 pkt->u.status0.scsi_status =
2332 cpu_to_le16(prm.rq_result);
2333 pkt->u.status0.residual =
2334 cpu_to_le32(prm.residual);
2335 pkt->u.status0.flags |= __constant_cpu_to_le16(
2336 CTIO7_FLAGS_SEND_STATUS);
2337 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2338 pkt->u.status0.flags |=
2339 __constant_cpu_to_le16(
2340 CTIO7_FLAGS_EXPLICIT_CONFORM |
2341 CTIO7_FLAGS_CONFORM_REQ);
2342 }
2343 }
2344
2345 } else {
2346 /*
2347 * We have already made sure that there is sufficient
2348 * amount of request entries to not drop HW lock in
2349 * req_pkt().
2350 */
2351 struct ctio7_to_24xx *ctio =
2352 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2353
2354 ql_dbg(ql_dbg_tgt, vha, 0xe019,
2355 "Building additional status packet\n");
2356
f83adb61
QT		 2357 /*
2358 * T10Dif: ctio_crc2_to_fw overlay ontop of
2359 * ctio7_to_24xx
2360 */
2d70c103 2361 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 2362 /* reset back to CTIO7 */
2d70c103 2363 ctio->entry_count = 1;
f83adb61 2364 ctio->entry_type = CTIO_TYPE7;
2d70c103
NB		 2365 ctio->dseg_count = 0;
2366 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
2367 CTIO7_FLAGS_DATA_IN);
2368
2369 /* Real finish is ctio_m1's finish */
2370 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
2371 pkt->u.status0.flags |= __constant_cpu_to_le16(
2372 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 2373
2374 /* qlt_24xx_init_ctio_to_isp will correct
2375 * all neccessary fields that's part of CTIO7.
2376 * There should be no residual of CTIO-CRC2 data.
2377 */
2d70c103
NB		 2378 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2379 &prm);
2380 pr_debug("Status CTIO7: %p\n", ctio);
2381 }
2382 } else
2383 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2384
2385
2386 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
2387
2388 ql_dbg(ql_dbg_tgt, vha, 0xe01a,
2389 "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
2390 pkt, scsi_status);
2391
2392 qla2x00_start_iocbs(vha, vha->req);
2393 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2394
2395 return 0;
2396
2397out_unmap_unlock:
2398 if (cmd->sg_mapped)
2399 qlt_unmap_sg(vha, cmd);
2400 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2401
2402 return res;
2403}
2404EXPORT_SYMBOL(qlt_xmit_response);
2405
2406int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2407{
2408 struct ctio7_to_24xx *pkt;
2409 struct scsi_qla_host *vha = cmd->vha;
2410 struct qla_hw_data *ha = vha->hw;
2411 struct qla_tgt *tgt = cmd->tgt;
2412 struct qla_tgt_prm prm;
2413 unsigned long flags;
2414 int res = 0;
2415
2416 memset(&prm, 0, sizeof(prm));
2417 prm.cmd = cmd;
2418 prm.tgt = tgt;
2419 prm.sg = NULL;
2420 prm.req_cnt = 1;
2421
2422 /* Send marker if required */
2423 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2424 return -EIO;
2425
f83adb61
QT		 2426 ql_dbg(ql_dbg_tgt, vha, 0xe01b,
2427 "%s: CTIO_start: vha(%d) se_cmd %p ox_id %04x\n",
2428 __func__, (int)vha->vp_idx, &cmd->se_cmd,
2429 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103
NB		 2430
2431 /* Calculate number of entries and segments required */
2432 if (qlt_pci_map_calc_cnt(&prm) != 0)
2433 return -EAGAIN;
2434
2435 spin_lock_irqsave(&ha->hardware_lock, flags);
2436
2437 /* Does F/W have an IOCBs for this request */
2438 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2439 if (res != 0)
2440 goto out_unlock_free_unmap;
f83adb61
QT		 2441 if (cmd->se_cmd.prot_op)
2442 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2443 else
2444 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 2445
2d70c103
NB		 2446 if (unlikely(res != 0))
2447 goto out_unlock_free_unmap;
2448 pkt = (struct ctio7_to_24xx *)prm.pkt;
2449 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2450 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 2451
2452 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2453 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2454
2455 cmd->state = QLA_TGT_STATE_NEED_DATA;
2456
2457 qla2x00_start_iocbs(vha, vha->req);
2458 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2459
2460 return res;
2461
2462out_unlock_free_unmap:
2463 if (cmd->sg_mapped)
2464 qlt_unmap_sg(vha, cmd);
2465 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2466
2467 return res;
2468}
2469EXPORT_SYMBOL(qlt_rdy_to_xfer);
2470
f83adb61
QT		 2471
2472/*
2473 * Checks the guard or meta-data for the type of error
2474 * detected by the HBA.
2475 */
2476static inline int
2477qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2478 struct ctio_crc_from_fw *sts)
2479{
2480 uint8_t *ap = &sts->actual_dif[0];
2481 uint8_t *ep = &sts->expected_dif[0];
2482 uint32_t e_ref_tag, a_ref_tag;
2483 uint16_t e_app_tag, a_app_tag;
2484 uint16_t e_guard, a_guard;
2485 uint64_t lba = cmd->se_cmd.t_task_lba;
2486
2487 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2488 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2489 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2490
2491 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2492 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2493 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2494
2495 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2496 "iocb(s) %p Returned STATUS.\n", sts);
2497
2498 ql_dbg(ql_dbg_tgt, vha, 0xf075,
2499 "dif check TGT cdb 0x%x lba 0x%llu: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n",
2500 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2501 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2502
2503 /*
2504 * Ignore sector if:
2505 * For type 3: ref & app tag is all 'f's
2506 * For type 0,1,2: app tag is all 'f's
2507 */
2508 if ((a_app_tag == 0xffff) &&
2509 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2510 (a_ref_tag == 0xffffffff))) {
2511 uint32_t blocks_done;
2512
2513 /* 2TB boundary case covered automatically with this */
2514 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2515 cmd->se_cmd.bad_sector = e_ref_tag;
2516 cmd->se_cmd.pi_err = 0;
2517 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2518 "need to return scsi good\n");
2519
2520 /* Update protection tag */
2521 if (cmd->prot_sg_cnt) {
2522 uint32_t i, j = 0, k = 0, num_ent;
2523 struct scatterlist *sg, *sgl;
2524
2525
2526 sgl = cmd->prot_sg;
2527
2528 /* Patch the corresponding protection tags */
2529 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2530 num_ent = sg_dma_len(sg) / 8;
2531 if (k + num_ent < blocks_done) {
2532 k += num_ent;
2533 continue;
2534 }
2535 j = blocks_done - k - 1;
2536 k = blocks_done;
2537 break;
2538 }
2539
2540 if (k != blocks_done) {
2541 ql_log(ql_log_warn, vha, 0xf076,
2542 "unexpected tag values tag:lba=%u:%llu)\n",
2543 e_ref_tag, (unsigned long long)lba);
2544 goto out;
2545 }
2546
2547#if 0
2548 struct sd_dif_tuple *spt;
2549 /* TODO:
2550 * This section came from initiator. Is it valid here?
2551 * should ulp be override with actual val???
2552 */
2553 spt = page_address(sg_page(sg)) + sg->offset;
2554 spt += j;
2555
2556 spt->app_tag = 0xffff;
2557 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2558 spt->ref_tag = 0xffffffff;
2559#endif
2560 }
2561
2562 return 0;
2563 }
2564
2565 /* check guard */
2566 if (e_guard != a_guard) {
2567 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2568 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2569
2570 ql_log(ql_log_warn, vha, 0xe076,
2571 "Guard ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
2572 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2573 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2574 a_guard, e_guard, cmd);
2575 goto out;
2576 }
2577
2578 /* check ref tag */
2579 if (e_ref_tag != a_ref_tag) {
2580 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
2581 cmd->se_cmd.bad_sector = e_ref_tag;
2582
2583 ql_log(ql_log_warn, vha, 0xe077,
2584 "Ref Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
2585 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2586 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2587 a_guard, e_guard, cmd);
2588 goto out;
2589 }
2590
2591 /* check appl tag */
2592 if (e_app_tag != a_app_tag) {
2593 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
2594 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2595
2596 ql_log(ql_log_warn, vha, 0xe078,
2597 "App Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
2598 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2599 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2600 a_guard, e_guard, cmd);
2601 goto out;
2602 }
2603out:
2604 return 1;
2605}
2606
2607
2d70c103
NB		 2608/* If hardware_lock held on entry, might drop it, then reaquire */
2609/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2610static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2611 struct qla_tgt_cmd *cmd,
2612 struct atio_from_isp *atio)
2613{
2614 struct ctio7_to_24xx *ctio24;
2615 struct qla_hw_data *ha = vha->hw;
2616 request_t *pkt;
2617 int ret = 0;
2618
2619 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2620
2621 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
2622 if (pkt == NULL) {
2623 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2624 "qla_target(%d): %s failed: unable to allocate "
2625 "request packet\n", vha->vp_idx, __func__);
2626 return -ENOMEM;
2627 }
2628
2629 if (cmd != NULL) {
2630 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2631 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2632 "qla_target(%d): Terminating cmd %p with "
2633 "incorrect state %d\n", vha->vp_idx, cmd,
2634 cmd->state);
2635 } else
2636 ret = 1;
2637 }
2638
2639 pkt->entry_count = 1;
2640 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2641
2642 ctio24 = (struct ctio7_to_24xx *)pkt;
2643 ctio24->entry_type = CTIO_TYPE7;
2644 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2645 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2646 ctio24->vp_index = vha->vp_idx;
2647 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2648 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2649 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2650 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2651 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2652 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2653 CTIO7_FLAGS_TERMINATE);
2654 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
2655
2656 /* Most likely, it isn't needed */
2657 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2658 &atio->u.isp24.fcp_cmnd.add_cdb[
2659 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2660 if (ctio24->u.status1.residual != 0)
2661 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2662
2663 qla2x00_start_iocbs(vha, vha->req);
2664 return ret;
2665}
2666
2667static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2668 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2669{
2670 unsigned long flags;
2671 int rc;
2672
2673 if (qlt_issue_marker(vha, ha_locked) < 0)
2674 return;
2675
2676 if (ha_locked) {
2677 rc = __qlt_send_term_exchange(vha, cmd, atio);
2678 goto done;
2679 }
2680 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2681 rc = __qlt_send_term_exchange(vha, cmd, atio);
2682 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2683done:
2684 if (rc == 1) {
2685 if (!ha_locked && !in_interrupt())
2686 msleep(250); /* just in case */
2687
f83adb61
QT		 2688 if (cmd->sg_mapped)
2689 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2690 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2691 }
2692}
2693
2694void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2695{
f83adb61
QT		 2696 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
2697 "%s: se_cmd[%p] ox_id %04x\n",
2698 __func__, &cmd->se_cmd,
2699 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 2700
f83adb61 2701 BUG_ON(cmd->sg_mapped);
2d70c103
NB		 2702 if (unlikely(cmd->free_sg))
2703 kfree(cmd->sg);
2704 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2705}
2706EXPORT_SYMBOL(qlt_free_cmd);
2707
2708/* ha->hardware_lock supposed to be held on entry */
2709static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2710 struct qla_tgt_cmd *cmd, void *ctio)
2711{
2712 struct qla_tgt_srr_ctio *sc;
0e8cd71c 2713 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 2714 struct qla_tgt_srr_imm *imm;
2715
2716 tgt->ctio_srr_id++;
2717
2718 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2719 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2720
2721 if (!ctio) {
2722 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2723 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2724 vha->vp_idx);
2725 return -EINVAL;
2726 }
2727
2728 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2729 if (sc != NULL) {
2730 sc->cmd = cmd;
2731 /* IRQ is already OFF */
2732 spin_lock(&tgt->srr_lock);
2733 sc->srr_id = tgt->ctio_srr_id;
2734 list_add_tail(&sc->srr_list_entry,
2735 &tgt->srr_ctio_list);
2736 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2737 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2738 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2739 int found = 0;
2740 list_for_each_entry(imm, &tgt->srr_imm_list,
2741 srr_list_entry) {
2742 if (imm->srr_id == sc->srr_id) {
2743 found = 1;
2744 break;
2745 }
2746 }
2747 if (found) {
2748 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2749 "Scheduling srr work\n");
2750 schedule_work(&tgt->srr_work);
2751 } else {
2752 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2753 "qla_target(%d): imm_srr_id "
2754 "== ctio_srr_id (%d), but there is no "
2755 "corresponding SRR IMM, deleting CTIO "
2756 "SRR %p\n", vha->vp_idx,
2757 tgt->ctio_srr_id, sc);
2758 list_del(&sc->srr_list_entry);
2759 spin_unlock(&tgt->srr_lock);
2760
2761 kfree(sc);
2762 return -EINVAL;
2763 }
2764 }
2765 spin_unlock(&tgt->srr_lock);
2766 } else {
2767 struct qla_tgt_srr_imm *ti;
2768
2769 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2770 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2771 vha->vp_idx);
2772 spin_lock(&tgt->srr_lock);
2773 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2774 srr_list_entry) {
2775 if (imm->srr_id == tgt->ctio_srr_id) {
2776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2777 "IMM SRR %p deleted (id %d)\n",
2778 imm, imm->srr_id);
2779 list_del(&imm->srr_list_entry);
2780 qlt_reject_free_srr_imm(vha, imm, 1);
2781 }
2782 }
2783 spin_unlock(&tgt->srr_lock);
2784
2785 return -ENOMEM;
2786 }
2787
2788 return 0;
2789}
2790
2791/*
2792 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2793 */
2794static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2795 struct qla_tgt_cmd *cmd, uint32_t status)
2796{
2797 int term = 0;
2798
2799 if (ctio != NULL) {
2800 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2801 term = !(c->flags &
2802 __constant_cpu_to_le16(OF_TERM_EXCH));
2803 } else
2804 term = 1;
2805
2806 if (term)
2807 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2808
2809 return term;
2810}
2811
2812/* ha->hardware_lock supposed to be held on entry */
2813static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2814 uint32_t handle)
2815{
2816 struct qla_hw_data *ha = vha->hw;
2817
2818 handle--;
2819 if (ha->tgt.cmds[handle] != NULL) {
2820 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2821 ha->tgt.cmds[handle] = NULL;
2822 return cmd;
2823 } else
2824 return NULL;
2825}
2826
2827/* ha->hardware_lock supposed to be held on entry */
2828static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2829 uint32_t handle, void *ctio)
2830{
2831 struct qla_tgt_cmd *cmd = NULL;
2832
2833 /* Clear out internal marks */
2834 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2835 CTIO_INTERMEDIATE_HANDLE_MARK);
2836
2837 if (handle != QLA_TGT_NULL_HANDLE) {
2838 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
2839 ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
2840 "SKIP_HANDLE CTIO\n");
2841 return NULL;
2842 }
2843 /* handle-1 is actually used */
8d93f550 2844 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 2845 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2846 "qla_target(%d): Wrong handle %x received\n",
2847 vha->vp_idx, handle);
2848 return NULL;
2849 }
2850 cmd = qlt_get_cmd(vha, handle);
2851 if (unlikely(cmd == NULL)) {
2852 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2853 "qla_target(%d): Suspicious: unable to "
2854 "find the command with handle %x\n", vha->vp_idx,
2855 handle);
2856 return NULL;
2857 }
2858 } else if (ctio != NULL) {
2859 /* We can't get loop ID from CTIO7 */
2860 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2861 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2862 "support NULL handles\n", vha->vp_idx);
2863 return NULL;
2864 }
2865
2866 return cmd;
2867}
2868
2869/*
2870 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2871 */
2872static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2873 uint32_t status, void *ctio)
2874{
2875 struct qla_hw_data *ha = vha->hw;
2876 struct se_cmd *se_cmd;
2877 struct target_core_fabric_ops *tfo;
2878 struct qla_tgt_cmd *cmd;
2879
2880 ql_dbg(ql_dbg_tgt, vha, 0xe01e,
2881 "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
2882 vha->vp_idx, ctio, status, handle);
2883
2884 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2885 /* That could happen only in case of an error/reset/abort */
2886 if (status != CTIO_SUCCESS) {
2887 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2888 "Intermediate CTIO received"
2889 " (status %x)\n", status);
2890 }
2891 return;
2892 }
2893
2894 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 2895 if (cmd == NULL)
2d70c103 2896 return;
092e1dc3 2897
2d70c103
NB		 2898 se_cmd = &cmd->se_cmd;
2899 tfo = se_cmd->se_tfo;
2900
2901 if (cmd->sg_mapped)
2902 qlt_unmap_sg(vha, cmd);
2903
2904 if (unlikely(status != CTIO_SUCCESS)) {
2905 switch (status & 0xFFFF) {
2906 case CTIO_LIP_RESET:
2907 case CTIO_TARGET_RESET:
2908 case CTIO_ABORTED:
2909 case CTIO_TIMEOUT:
2910 case CTIO_INVALID_RX_ID:
2911 /* They are OK */
2912 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
2913 "qla_target(%d): CTIO with "
2914 "status %#x received, state %x, se_cmd %p, "
2915 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
2916 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
2917 status, cmd->state, se_cmd);
2918 break;
2919
2920 case CTIO_PORT_LOGGED_OUT:
2921 case CTIO_PORT_UNAVAILABLE:
2922 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
2923 "qla_target(%d): CTIO with PORT LOGGED "
2924 "OUT (29) or PORT UNAVAILABLE (28) status %x "
2925 "received (state %x, se_cmd %p)\n", vha->vp_idx,
2926 status, cmd->state, se_cmd);
2927 break;
2928
2929 case CTIO_SRR_RECEIVED:
2930 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
2931 "qla_target(%d): CTIO with SRR_RECEIVED"
2932 " status %x received (state %x, se_cmd %p)\n",
2933 vha->vp_idx, status, cmd->state, se_cmd);
2934 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
2935 break;
2936 else
2937 return;
2938
f83adb61
QT		 2939 case CTIO_DIF_ERROR: {
2940 struct ctio_crc_from_fw *crc =
2941 (struct ctio_crc_from_fw *)ctio;
2942 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
2943 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
2944 vha->vp_idx, status, cmd->state, se_cmd,
2945 *((u64 *)&crc->actual_dif[0]),
2946 *((u64 *)&crc->expected_dif[0]));
2947
2948 if (qlt_handle_dif_error(vha, cmd, ctio)) {
2949 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2950 /* scsi Write/xfer rdy complete */
2951 goto skip_term;
2952 } else {
2953 /* scsi read/xmit respond complete
2954 * call handle dif to send scsi status
2955 * rather than terminate exchange.
2956 */
2957 cmd->state = QLA_TGT_STATE_PROCESSED;
2958 ha->tgt.tgt_ops->handle_dif_err(cmd);
2959 return;
2960 }
2961 } else {
2962 /* Need to generate a SCSI good completion.
2963 * because FW did not send scsi status.
2964 */
2965 status = 0;
2966 goto skip_term;
2967 }
2968 break;
2969 }
2d70c103
NB		 2970 default:
2971 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 2972 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 2973 vha->vp_idx, status, cmd->state, se_cmd);
2974 break;
2975 }
2976
2977 if (cmd->state != QLA_TGT_STATE_NEED_DATA)
2978 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
2979 return;
2980 }
f83adb61 2981skip_term:
2d70c103
NB		 2982
2983 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
2984 ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
2985 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2986 int rx_status = 0;
2987
2988 cmd->state = QLA_TGT_STATE_DATA_IN;
2989
2990 if (unlikely(status != CTIO_SUCCESS))
2991 rx_status = -EIO;
2992 else
2993 cmd->write_data_transferred = 1;
2994
2995 ql_dbg(ql_dbg_tgt, vha, 0xe020,
2996 "Data received, context %x, rx_status %d\n",
2997 0x0, rx_status);
2998
2999 ha->tgt.tgt_ops->handle_data(cmd);
3000 return;
3001 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
3002 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3003 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
3004 } else {
3005 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3006 "qla_target(%d): A command in state (%d) should "
3007 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3008 }
3009
3010 if (unlikely(status != CTIO_SUCCESS)) {
3011 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3012 dump_stack();
3013 }
3014
3015 ha->tgt.tgt_ops->free_cmd(cmd);
3016}
3017
2d70c103
NB		 3018static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3019 uint8_t task_codes)
3020{
3021 int fcp_task_attr;
3022
3023 switch (task_codes) {
3024 case ATIO_SIMPLE_QUEUE:
3025 fcp_task_attr = MSG_SIMPLE_TAG;
3026 break;
3027 case ATIO_HEAD_OF_QUEUE:
3028 fcp_task_attr = MSG_HEAD_TAG;
3029 break;
3030 case ATIO_ORDERED_QUEUE:
3031 fcp_task_attr = MSG_ORDERED_TAG;
3032 break;
3033 case ATIO_ACA_QUEUE:
3034 fcp_task_attr = MSG_ACA_TAG;
3035 break;
3036 case ATIO_UNTAGGED:
3037 fcp_task_attr = MSG_SIMPLE_TAG;
3038 break;
3039 default:
3040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3041 "qla_target: unknown task code %x, use ORDERED instead\n",
3042 task_codes);
3043 fcp_task_attr = MSG_ORDERED_TAG;
3044 break;
3045 }
3046
3047 return fcp_task_attr;
3048}
3049
3050static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3051 uint8_t *);
3052/*
3053 * Process context for I/O path into tcm_qla2xxx code
3054 */
3055static void qlt_do_work(struct work_struct *work)
3056{
3057 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
3058 scsi_qla_host_t *vha = cmd->vha;
3059 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3060 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3061 struct qla_tgt_sess *sess = NULL;
3062 struct atio_from_isp *atio = &cmd->atio;
3063 unsigned char *cdb;
3064 unsigned long flags;
3065 uint32_t data_length;
3066 int ret, fcp_task_attr, data_dir, bidi = 0;
3067
3068 if (tgt->tgt_stop)
3069 goto out_term;
3070
3071 spin_lock_irqsave(&ha->hardware_lock, flags);
3072 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3073 atio->u.isp24.fcp_hdr.s_id);
e1013f14
RD		 3074 /* Do kref_get() before dropping qla_hw_data->hardware_lock. */
3075 if (sess)
3076 kref_get(&sess->se_sess->sess_kref);
2d70c103
NB		 3077 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3078
3079 if (unlikely(!sess)) {
3080 uint8_t *s_id = atio->u.isp24.fcp_hdr.s_id;
3081
3082 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
3083 "qla_target(%d): Unable to find wwn login"
3084 " (s_id %x:%x:%x), trying to create it manually\n",
3085 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
3086
3087 if (atio->u.raw.entry_count > 1) {
3088 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
3089 "Dropping multy entry cmd %p\n", cmd);
3090 goto out_term;
3091 }
3092
0e8cd71c 3093 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 3094 sess = qlt_make_local_sess(vha, s_id);
3095 /* sess has an extra creation ref. */
0e8cd71c 3096 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 3097
3098 if (!sess)
3099 goto out_term;
3100 }
3101
3102 cmd->sess = sess;
3103 cmd->loop_id = sess->loop_id;
3104 cmd->conf_compl_supported = sess->conf_compl_supported;
3105
3106 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
3107 cmd->tag = atio->u.isp24.exchange_addr;
3108 cmd->unpacked_lun = scsilun_to_int(
3109 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3110
3111 if (atio->u.isp24.fcp_cmnd.rddata &&
3112 atio->u.isp24.fcp_cmnd.wrdata) {
3113 bidi = 1;
3114 data_dir = DMA_TO_DEVICE;
3115 } else if (atio->u.isp24.fcp_cmnd.rddata)
3116 data_dir = DMA_FROM_DEVICE;
3117 else if (atio->u.isp24.fcp_cmnd.wrdata)
3118 data_dir = DMA_TO_DEVICE;
3119 else
3120 data_dir = DMA_NONE;
3121
3122 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3123 atio->u.isp24.fcp_cmnd.task_attr);
3124 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3125 &atio->u.isp24.fcp_cmnd.add_cdb[
3126 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3127
3128 ql_dbg(ql_dbg_tgt, vha, 0xe022,
f83adb61
QT		 3129 "qla_target: START qla cmd: %p se_cmd %p lun: 0x%04x (tag %d) len(%d) ox_id %x\n",
3130 cmd, &cmd->se_cmd, cmd->unpacked_lun, cmd->tag, data_length,
3131 cmd->atio.u.isp24.fcp_hdr.ox_id);
2d70c103
NB		 3132
3133 ret = vha->hw->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3134 fcp_task_attr, data_dir, bidi);
3135 if (ret != 0)
3136 goto out_term;
3137 /*
3138 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3139 */
08234e3a 3140 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 3141 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 3142 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 3143 return;
3144
3145out_term:
3146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
3147 /*
fae9eaf8
RD		 3148 * cmd has not sent to target yet, so pass NULL as the second
3149 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103
NB		 3150 */
3151 spin_lock_irqsave(&ha->hardware_lock, flags);
3152 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
fae9eaf8 3153 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2d70c103
NB		 3154 if (sess)
3155 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 3156 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 3157}
3158
3159/* ha->hardware_lock supposed to be held on entry */
3160static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3161 struct atio_from_isp *atio)
3162{
0e8cd71c 3163 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3164 struct qla_tgt_cmd *cmd;
3165
3166 if (unlikely(tgt->tgt_stop)) {
3167 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
3168 "New command while device %p is shutting down\n", tgt);
3169 return -EFAULT;
3170 }
3171
3172 cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC);
3173 if (!cmd) {
3174 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
3175 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
3176 return -ENOMEM;
3177 }
3178
2d70c103
NB		 3179 memcpy(&cmd->atio, atio, sizeof(*atio));
3180 cmd->state = QLA_TGT_STATE_NEW;
0e8cd71c 3181 cmd->tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3182 cmd->vha = vha;
3183
3184 INIT_WORK(&cmd->work, qlt_do_work);
3185 queue_work(qla_tgt_wq, &cmd->work);
3186 return 0;
3187
3188}
3189
3190/* ha->hardware_lock supposed to be held on entry */
3191static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
3192 int fn, void *iocb, int flags)
3193{
3194 struct scsi_qla_host *vha = sess->vha;
3195 struct qla_hw_data *ha = vha->hw;
3196 struct qla_tgt_mgmt_cmd *mcmd;
3197 int res;
3198 uint8_t tmr_func;
3199
3200 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3201 if (!mcmd) {
3202 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
3203 "qla_target(%d): Allocation of management "
3204 "command failed, some commands and their data could "
3205 "leak\n", vha->vp_idx);
3206 return -ENOMEM;
3207 }
3208 memset(mcmd, 0, sizeof(*mcmd));
3209 mcmd->sess = sess;
3210
3211 if (iocb) {
3212 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3213 sizeof(mcmd->orig_iocb.imm_ntfy));
3214 }
3215 mcmd->tmr_func = fn;
3216 mcmd->flags = flags;
3217
3218 switch (fn) {
3219 case QLA_TGT_CLEAR_ACA:
3220 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
3221 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
3222 tmr_func = TMR_CLEAR_ACA;
3223 break;
3224
3225 case QLA_TGT_TARGET_RESET:
3226 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
3227 "qla_target(%d): TARGET_RESET received\n",
3228 sess->vha->vp_idx);
3229 tmr_func = TMR_TARGET_WARM_RESET;
3230 break;
3231
3232 case QLA_TGT_LUN_RESET:
3233 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
3234 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
3235 tmr_func = TMR_LUN_RESET;
3236 break;
3237
3238 case QLA_TGT_CLEAR_TS:
3239 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
3240 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
3241 tmr_func = TMR_CLEAR_TASK_SET;
3242 break;
3243
3244 case QLA_TGT_ABORT_TS:
3245 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
3246 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
3247 tmr_func = TMR_ABORT_TASK_SET;
3248 break;
3249#if 0
3250 case QLA_TGT_ABORT_ALL:
3251 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
3252 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
3253 sess->vha->vp_idx);
3254 tmr_func = 0;
3255 break;
3256
3257 case QLA_TGT_ABORT_ALL_SESS:
3258 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
3259 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
3260 sess->vha->vp_idx);
3261 tmr_func = 0;
3262 break;
3263
3264 case QLA_TGT_NEXUS_LOSS_SESS:
3265 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
3266 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
3267 sess->vha->vp_idx);
3268 tmr_func = 0;
3269 break;
3270
3271 case QLA_TGT_NEXUS_LOSS:
3272 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
3273 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
3274 tmr_func = 0;
3275 break;
3276#endif
3277 default:
3278 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
3279 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
3280 sess->vha->vp_idx, fn);
3281 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3282 return -ENOSYS;
3283 }
3284
3285 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
3286 if (res != 0) {
3287 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
3288 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
3289 sess->vha->vp_idx, res);
3290 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3291 return -EFAULT;
3292 }
3293
3294 return 0;
3295}
3296
3297/* ha->hardware_lock supposed to be held on entry */
3298static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
3299{
3300 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3301 struct qla_hw_data *ha = vha->hw;
3302 struct qla_tgt *tgt;
3303 struct qla_tgt_sess *sess;
3304 uint32_t lun, unpacked_lun;
3305 int lun_size, fn;
3306
0e8cd71c 3307 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3308
3309 lun = a->u.isp24.fcp_cmnd.lun;
3310 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
3311 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
3312 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3313 a->u.isp24.fcp_hdr.s_id);
3314 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3315
3316 if (!sess) {
3317 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
3318 "qla_target(%d): task mgmt fn 0x%x for "
3319 "non-existant session\n", vha->vp_idx, fn);
3320 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
3321 sizeof(struct atio_from_isp));
3322 }
3323
3324 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
3325}
3326
3327/* ha->hardware_lock supposed to be held on entry */
3328static int __qlt_abort_task(struct scsi_qla_host *vha,
3329 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
3330{
3331 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3332 struct qla_hw_data *ha = vha->hw;
3333 struct qla_tgt_mgmt_cmd *mcmd;
3334 uint32_t lun, unpacked_lun;
3335 int rc;
3336
3337 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3338 if (mcmd == NULL) {
3339 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
3340 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
3341 vha->vp_idx, __func__);
3342 return -ENOMEM;
3343 }
3344 memset(mcmd, 0, sizeof(*mcmd));
3345
3346 mcmd->sess = sess;
3347 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3348 sizeof(mcmd->orig_iocb.imm_ntfy));
3349
3350 lun = a->u.isp24.fcp_cmnd.lun;
3351 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3352
3353 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
3354 le16_to_cpu(iocb->u.isp2x.seq_id));
3355 if (rc != 0) {
3356 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
3357 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
3358 vha->vp_idx, rc);
3359 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3360 return -EFAULT;
3361 }
3362
3363 return 0;
3364}
3365
3366/* ha->hardware_lock supposed to be held on entry */
3367static int qlt_abort_task(struct scsi_qla_host *vha,
3368 struct imm_ntfy_from_isp *iocb)
3369{
3370 struct qla_hw_data *ha = vha->hw;
3371 struct qla_tgt_sess *sess;
3372 int loop_id;
3373
3374 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
3375
3376 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
3377 if (sess == NULL) {
3378 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
3379 "qla_target(%d): task abort for unexisting "
3380 "session\n", vha->vp_idx);
0e8cd71c 3381 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 3382 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
3383 }
3384
3385 return __qlt_abort_task(vha, iocb, sess);
3386}
3387
3388/*
3389 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3390 */
3391static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
3392 struct imm_ntfy_from_isp *iocb)
3393{
2d70c103
NB		 3394 int res = 0;
3395
3396 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
7b833558
OK		 3397 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
3398 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2d70c103
NB		 3399
3400 switch (iocb->u.isp24.status_subcode) {
3401 case ELS_PLOGI:
3402 case ELS_FLOGI:
3403 case ELS_PRLI:
3404 case ELS_LOGO:
3405 case ELS_PRLO:
3406 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3407 break;
3408 case ELS_PDISC:
3409 case ELS_ADISC:
3410 {
0e8cd71c 3411 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3412 if (tgt->link_reinit_iocb_pending) {
3413 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3414 0, 0, 0, 0, 0, 0);
3415 tgt->link_reinit_iocb_pending = 0;
3416 }
3417 res = 1; /* send notify ack */
3418 break;
3419 }
3420
3421 default:
3422 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
3423 "qla_target(%d): Unsupported ELS command %x "
3424 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
3425 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3426 break;
3427 }
3428
3429 return res;
3430}
3431
3432static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
3433{
3434 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
3435 size_t first_offset = 0, rem_offset = offset, tmp = 0;
3436 int i, sg_srr_cnt, bufflen = 0;
3437
3438 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
3439 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
3440 "cmd->sg_cnt: %u, direction: %d\n",
3441 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
3442
3443 /*
3444 * FIXME: Reject non zero SRR relative offset until we can test
3445 * this code properly.
3446 */
3447 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
3448 return -1;
3449
3450 if (!cmd->sg || !cmd->sg_cnt) {
3451 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
3452 "Missing cmd->sg or zero cmd->sg_cnt in"
3453 " qla_tgt_set_data_offset\n");
3454 return -EINVAL;
3455 }
3456 /*
3457 * Walk the current cmd->sg list until we locate the new sg_srr_start
3458 */
3459 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
3460 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
3461 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
3462 i, sg, sg_page(sg), sg->length, sg->offset);
3463
3464 if ((sg->length + tmp) > offset) {
3465 first_offset = rem_offset;
3466 sg_srr_start = sg;
3467 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
3468 "Found matching sg[%d], using %p as sg_srr_start, "
3469 "and using first_offset: %zu\n", i, sg,
3470 first_offset);
3471 break;
3472 }
3473 tmp += sg->length;
3474 rem_offset -= sg->length;
3475 }
3476
3477 if (!sg_srr_start) {
3478 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
3479 "Unable to locate sg_srr_start for offset: %u\n", offset);
3480 return -EINVAL;
3481 }
3482 sg_srr_cnt = (cmd->sg_cnt - i);
3483
3484 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
3485 if (!sg_srr) {
3486 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
3487 "Unable to allocate sgp\n");
3488 return -ENOMEM;
3489 }
3490 sg_init_table(sg_srr, sg_srr_cnt);
3491 sgp = &sg_srr[0];
3492 /*
3493 * Walk the remaining list for sg_srr_start, mapping to the newly
3494 * allocated sg_srr taking first_offset into account.
3495 */
3496 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
3497 if (first_offset) {
3498 sg_set_page(sgp, sg_page(sg),
3499 (sg->length - first_offset), first_offset);
3500 first_offset = 0;
3501 } else {
3502 sg_set_page(sgp, sg_page(sg), sg->length, 0);
3503 }
3504 bufflen += sgp->length;
3505
3506 sgp = sg_next(sgp);
3507 if (!sgp)
3508 break;
3509 }
3510
3511 cmd->sg = sg_srr;
3512 cmd->sg_cnt = sg_srr_cnt;
3513 cmd->bufflen = bufflen;
3514 cmd->offset += offset;
3515 cmd->free_sg = 1;
3516
3517 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
3518 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
3519 cmd->sg_cnt);
3520 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
3521 cmd->bufflen);
3522 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
3523 cmd->offset);
3524
3525 if (cmd->sg_cnt < 0)
3526 BUG();
3527
3528 if (cmd->bufflen < 0)
3529 BUG();
3530
3531 return 0;
3532}
3533
3534static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
3535 uint32_t srr_rel_offs, int *xmit_type)
3536{
3537 int res = 0, rel_offs;
3538
3539 rel_offs = srr_rel_offs - cmd->offset;
3540 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
3541 srr_rel_offs, rel_offs);
3542
3543 *xmit_type = QLA_TGT_XMIT_ALL;
3544
3545 if (rel_offs < 0) {
3546 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
3547 "qla_target(%d): SRR rel_offs (%d) < 0",
3548 cmd->vha->vp_idx, rel_offs);
3549 res = -1;
3550 } else if (rel_offs == cmd->bufflen)
3551 *xmit_type = QLA_TGT_XMIT_STATUS;
3552 else if (rel_offs > 0)
3553 res = qlt_set_data_offset(cmd, rel_offs);
3554
3555 return res;
3556}
3557
3558/* No locks, thread context */
3559static void qlt_handle_srr(struct scsi_qla_host *vha,
3560 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
3561{
3562 struct imm_ntfy_from_isp *ntfy =
3563 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
3564 struct qla_hw_data *ha = vha->hw;
3565 struct qla_tgt_cmd *cmd = sctio->cmd;
3566 struct se_cmd *se_cmd = &cmd->se_cmd;
3567 unsigned long flags;
3568 int xmit_type = 0, resp = 0;
3569 uint32_t offset;
3570 uint16_t srr_ui;
3571
3572 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
3573 srr_ui = ntfy->u.isp24.srr_ui;
3574
3575 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3576 cmd, srr_ui);
3577
3578 switch (srr_ui) {
3579 case SRR_IU_STATUS:
3580 spin_lock_irqsave(&ha->hardware_lock, flags);
3581 qlt_send_notify_ack(vha, ntfy,
3582 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3583 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3584 xmit_type = QLA_TGT_XMIT_STATUS;
3585 resp = 1;
3586 break;
3587 case SRR_IU_DATA_IN:
3588 if (!cmd->sg || !cmd->sg_cnt) {
3589 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3590 "Unable to process SRR_IU_DATA_IN due to"
3591 " missing cmd->sg, state: %d\n", cmd->state);
3592 dump_stack();
3593 goto out_reject;
3594 }
3595 if (se_cmd->scsi_status != 0) {
3596 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3597 "Rejecting SRR_IU_DATA_IN with non GOOD "
3598 "scsi_status\n");
3599 goto out_reject;
3600 }
3601 cmd->bufflen = se_cmd->data_length;
3602
3603 if (qlt_has_data(cmd)) {
3604 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3605 goto out_reject;
3606 spin_lock_irqsave(&ha->hardware_lock, flags);
3607 qlt_send_notify_ack(vha, ntfy,
3608 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3609 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3610 resp = 1;
3611 } else {
3612 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3613 "qla_target(%d): SRR for in data for cmd "
3614 "without them (tag %d, SCSI status %d), "
3615 "reject", vha->vp_idx, cmd->tag,
3616 cmd->se_cmd.scsi_status);
3617 goto out_reject;
3618 }
3619 break;
3620 case SRR_IU_DATA_OUT:
3621 if (!cmd->sg || !cmd->sg_cnt) {
3622 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3623 "Unable to process SRR_IU_DATA_OUT due to"
3624 " missing cmd->sg\n");
3625 dump_stack();
3626 goto out_reject;
3627 }
3628 if (se_cmd->scsi_status != 0) {
3629 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3630 "Rejecting SRR_IU_DATA_OUT"
3631 " with non GOOD scsi_status\n");
3632 goto out_reject;
3633 }
3634 cmd->bufflen = se_cmd->data_length;
3635
3636 if (qlt_has_data(cmd)) {
3637 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3638 goto out_reject;
3639 spin_lock_irqsave(&ha->hardware_lock, flags);
3640 qlt_send_notify_ack(vha, ntfy,
3641 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3642 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3643 if (xmit_type & QLA_TGT_XMIT_DATA)
3644 qlt_rdy_to_xfer(cmd);
3645 } else {
3646 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3647 "qla_target(%d): SRR for out data for cmd "
3648 "without them (tag %d, SCSI status %d), "
3649 "reject", vha->vp_idx, cmd->tag,
3650 cmd->se_cmd.scsi_status);
3651 goto out_reject;
3652 }
3653 break;
3654 default:
3655 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3656 "qla_target(%d): Unknown srr_ui value %x",
3657 vha->vp_idx, srr_ui);
3658 goto out_reject;
3659 }
3660
3661 /* Transmit response in case of status and data-in cases */
3662 if (resp)
3663 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3664
3665 return;
3666
3667out_reject:
3668 spin_lock_irqsave(&ha->hardware_lock, flags);
3669 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3670 NOTIFY_ACK_SRR_FLAGS_REJECT,
3671 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3672 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3673 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3674 cmd->state = QLA_TGT_STATE_DATA_IN;
3675 dump_stack();
3676 } else
3677 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3678 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3679}
3680
3681static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3682 struct qla_tgt_srr_imm *imm, int ha_locked)
3683{
3684 struct qla_hw_data *ha = vha->hw;
3685 unsigned long flags = 0;
3686
3687 if (!ha_locked)
3688 spin_lock_irqsave(&ha->hardware_lock, flags);
3689
3690 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3691 NOTIFY_ACK_SRR_FLAGS_REJECT,
3692 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3693 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3694
3695 if (!ha_locked)
3696 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3697
3698 kfree(imm);
3699}
3700
3701static void qlt_handle_srr_work(struct work_struct *work)
3702{
3703 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3704 struct scsi_qla_host *vha = tgt->vha;
3705 struct qla_tgt_srr_ctio *sctio;
3706 unsigned long flags;
3707
3708 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3709 tgt);
3710
3711restart:
3712 spin_lock_irqsave(&tgt->srr_lock, flags);
3713 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3714 struct qla_tgt_srr_imm *imm, *i, *ti;
3715 struct qla_tgt_cmd *cmd;
3716 struct se_cmd *se_cmd;
3717
3718 imm = NULL;
3719 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3720 srr_list_entry) {
3721 if (i->srr_id == sctio->srr_id) {
3722 list_del(&i->srr_list_entry);
3723 if (imm) {
3724 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3725 "qla_target(%d): There must be "
3726 "only one IMM SRR per CTIO SRR "
3727 "(IMM SRR %p, id %d, CTIO %p\n",
3728 vha->vp_idx, i, i->srr_id, sctio);
3729 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3730 } else
3731 imm = i;
3732 }
3733 }
3734
3735 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3736 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3737 sctio->srr_id);
3738
3739 if (imm == NULL) {
3740 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3741 "Not found matching IMM for SRR CTIO (id %d)\n",
3742 sctio->srr_id);
3743 continue;
3744 } else
3745 list_del(&sctio->srr_list_entry);
3746
3747 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3748
3749 cmd = sctio->cmd;
3750 /*
3751 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3752 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3753 * logic..
3754 */
3755 cmd->offset = 0;
3756 if (cmd->free_sg) {
3757 kfree(cmd->sg);
3758 cmd->sg = NULL;
3759 cmd->free_sg = 0;
3760 }
3761 se_cmd = &cmd->se_cmd;
3762
3763 cmd->sg_cnt = se_cmd->t_data_nents;
3764 cmd->sg = se_cmd->t_data_sg;
3765
3766 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3767 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3768 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
6f58c780
DGW		 3769 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
3770 cmd->sg_cnt, cmd->offset);
2d70c103
NB		 3771
3772 qlt_handle_srr(vha, sctio, imm);
3773
3774 kfree(imm);
3775 kfree(sctio);
3776 goto restart;
3777 }
3778 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3779}
3780
3781/* ha->hardware_lock supposed to be held on entry */
3782static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3783 struct imm_ntfy_from_isp *iocb)
3784{
3785 struct qla_tgt_srr_imm *imm;
0e8cd71c 3786 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3787 struct qla_tgt_srr_ctio *sctio;
3788
3789 tgt->imm_srr_id++;
3790
3791 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
3792 vha->vp_idx);
3793
3794 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
3795 if (imm != NULL) {
3796 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
3797
3798 /* IRQ is already OFF */
3799 spin_lock(&tgt->srr_lock);
3800 imm->srr_id = tgt->imm_srr_id;
3801 list_add_tail(&imm->srr_list_entry,
3802 &tgt->srr_imm_list);
3803 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
3804 "IMM NTFY SRR %p added (id %d, ui %x)\n",
3805 imm, imm->srr_id, iocb->u.isp24.srr_ui);
3806 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3807 int found = 0;
3808 list_for_each_entry(sctio, &tgt->srr_ctio_list,
3809 srr_list_entry) {
3810 if (sctio->srr_id == imm->srr_id) {
3811 found = 1;
3812 break;
3813 }
3814 }
3815 if (found) {
3816 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
3817 "Scheduling srr work\n");
3818 schedule_work(&tgt->srr_work);
3819 } else {
3820 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
3821 "qla_target(%d): imm_srr_id "
3822 "== ctio_srr_id (%d), but there is no "
3823 "corresponding SRR CTIO, deleting IMM "
3824 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
3825 imm);
3826 list_del(&imm->srr_list_entry);
3827
3828 kfree(imm);
3829
3830 spin_unlock(&tgt->srr_lock);
3831 goto out_reject;
3832 }
3833 }
3834 spin_unlock(&tgt->srr_lock);
3835 } else {
3836 struct qla_tgt_srr_ctio *ts;
3837
3838 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
3839 "qla_target(%d): Unable to allocate SRR IMM "
3840 "entry, SRR request will be rejected\n", vha->vp_idx);
3841
3842 /* IRQ is already OFF */
3843 spin_lock(&tgt->srr_lock);
3844 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
3845 srr_list_entry) {
3846 if (sctio->srr_id == tgt->imm_srr_id) {
3847 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
3848 "CTIO SRR %p deleted (id %d)\n",
3849 sctio, sctio->srr_id);
3850 list_del(&sctio->srr_list_entry);
3851 qlt_send_term_exchange(vha, sctio->cmd,
3852 &sctio->cmd->atio, 1);
3853 kfree(sctio);
3854 }
3855 }
3856 spin_unlock(&tgt->srr_lock);
3857 goto out_reject;
3858 }
3859
3860 return;
3861
3862out_reject:
3863 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
3864 NOTIFY_ACK_SRR_FLAGS_REJECT,
3865 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3866 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3867}
3868
3869/*
3870 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3871 */
3872static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
3873 struct imm_ntfy_from_isp *iocb)
3874{
3875 struct qla_hw_data *ha = vha->hw;
3876 uint32_t add_flags = 0;
3877 int send_notify_ack = 1;
3878 uint16_t status;
3879
3880 status = le16_to_cpu(iocb->u.isp2x.status);
3881 switch (status) {
3882 case IMM_NTFY_LIP_RESET:
3883 {
3884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
3885 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
3886 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
3887 iocb->u.isp24.status_subcode);
3888
3889 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3890 send_notify_ack = 0;
3891 break;
3892 }
3893
3894 case IMM_NTFY_LIP_LINK_REINIT:
3895 {
0e8cd71c 3896 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3897 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
3898 "qla_target(%d): LINK REINIT (loop %#x, "
3899 "subcode %x)\n", vha->vp_idx,
3900 le16_to_cpu(iocb->u.isp24.nport_handle),
3901 iocb->u.isp24.status_subcode);
3902 if (tgt->link_reinit_iocb_pending) {
3903 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3904 0, 0, 0, 0, 0, 0);
3905 }
3906 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
3907 tgt->link_reinit_iocb_pending = 1;
3908 /*
3909 * QLogic requires to wait after LINK REINIT for possible
3910 * PDISC or ADISC ELS commands
3911 */
3912 send_notify_ack = 0;
3913 break;
3914 }
3915
3916 case IMM_NTFY_PORT_LOGOUT:
3917 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
3918 "qla_target(%d): Port logout (loop "
3919 "%#x, subcode %x)\n", vha->vp_idx,
3920 le16_to_cpu(iocb->u.isp24.nport_handle),
3921 iocb->u.isp24.status_subcode);
3922
3923 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
3924 send_notify_ack = 0;
3925 /* The sessions will be cleared in the callback, if needed */
3926 break;
3927
3928 case IMM_NTFY_GLBL_TPRLO:
3929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
3930 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
3931 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3932 send_notify_ack = 0;
3933 /* The sessions will be cleared in the callback, if needed */
3934 break;
3935
3936 case IMM_NTFY_PORT_CONFIG:
3937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
3938 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
3939 status);
3940 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3941 send_notify_ack = 0;
3942 /* The sessions will be cleared in the callback, if needed */
3943 break;
3944
3945 case IMM_NTFY_GLBL_LOGO:
3946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
3947 "qla_target(%d): Link failure detected\n",
3948 vha->vp_idx);
3949 /* I_T nexus loss */
3950 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3951 send_notify_ack = 0;
3952 break;
3953
3954 case IMM_NTFY_IOCB_OVERFLOW:
3955 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
3956 "qla_target(%d): Cannot provide requested "
3957 "capability (IOCB overflowed the immediate notify "
3958 "resource count)\n", vha->vp_idx);
3959 break;
3960
3961 case IMM_NTFY_ABORT_TASK:
3962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
3963 "qla_target(%d): Abort Task (S %08x I %#x -> "
3964 "L %#x)\n", vha->vp_idx,
3965 le16_to_cpu(iocb->u.isp2x.seq_id),
3966 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
3967 le16_to_cpu(iocb->u.isp2x.lun));
3968 if (qlt_abort_task(vha, iocb) == 0)
3969 send_notify_ack = 0;
3970 break;
3971
3972 case IMM_NTFY_RESOURCE:
3973 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
3974 "qla_target(%d): Out of resources, host %ld\n",
3975 vha->vp_idx, vha->host_no);
3976 break;
3977
3978 case IMM_NTFY_MSG_RX:
3979 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
3980 "qla_target(%d): Immediate notify task %x\n",
3981 vha->vp_idx, iocb->u.isp2x.task_flags);
3982 if (qlt_handle_task_mgmt(vha, iocb) == 0)
3983 send_notify_ack = 0;
3984 break;
3985
3986 case IMM_NTFY_ELS:
3987 if (qlt_24xx_handle_els(vha, iocb) == 0)
3988 send_notify_ack = 0;
3989 break;
3990
3991 case IMM_NTFY_SRR:
3992 qlt_prepare_srr_imm(vha, iocb);
3993 send_notify_ack = 0;
3994 break;
3995
3996 default:
3997 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
3998 "qla_target(%d): Received unknown immediate "
3999 "notify status %x\n", vha->vp_idx, status);
4000 break;
4001 }
4002
4003 if (send_notify_ack)
4004 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4005}
4006
4007/*
4008 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4009 * This function sends busy to ISP 2xxx or 24xx.
4010 */
4011static void qlt_send_busy(struct scsi_qla_host *vha,
4012 struct atio_from_isp *atio, uint16_t status)
4013{
4014 struct ctio7_to_24xx *ctio24;
4015 struct qla_hw_data *ha = vha->hw;
4016 request_t *pkt;
4017 struct qla_tgt_sess *sess = NULL;
4018
4019 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4020 atio->u.isp24.fcp_hdr.s_id);
4021 if (!sess) {
4022 qlt_send_term_exchange(vha, NULL, atio, 1);
4023 return;
4024 }
4025 /* Sending marker isn't necessary, since we called from ISR */
4026
4027 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4028 if (!pkt) {
4029 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
4030 "qla_target(%d): %s failed: unable to allocate "
4031 "request packet", vha->vp_idx, __func__);
4032 return;
4033 }
4034
4035 pkt->entry_count = 1;
4036 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
4037
4038 ctio24 = (struct ctio7_to_24xx *)pkt;
4039 ctio24->entry_type = CTIO_TYPE7;
4040 ctio24->nport_handle = sess->loop_id;
4041 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
4042 ctio24->vp_index = vha->vp_idx;
4043 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
4044 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
4045 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
4046 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
4047 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
4048 __constant_cpu_to_le16(
4049 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
4050 CTIO7_FLAGS_DONT_RET_CTIO);
4051 /*
4052 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
4053 * if the explicit conformation is used.
4054 */
4055 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
4056 ctio24->u.status1.scsi_status = cpu_to_le16(status);
4057 ctio24->u.status1.residual = get_unaligned((uint32_t *)
4058 &atio->u.isp24.fcp_cmnd.add_cdb[
4059 atio->u.isp24.fcp_cmnd.add_cdb_len]);
4060 if (ctio24->u.status1.residual != 0)
4061 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
4062
4063 qla2x00_start_iocbs(vha, vha->req);
4064}
4065
4066/* ha->hardware_lock supposed to be held on entry */
4067/* called via callback from qla2xxx */
4068static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
4069 struct atio_from_isp *atio)
4070{
4071 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4072 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4073 int rc;
4074
4075 if (unlikely(tgt == NULL)) {
4076 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
4077 "ATIO pkt, but no tgt (ha %p)", ha);
4078 return;
4079 }
4080 ql_dbg(ql_dbg_tgt, vha, 0xe02c,
4081 "qla_target(%d): ATIO pkt %p: type %02x count %02x",
4082 vha->vp_idx, atio, atio->u.raw.entry_type,
4083 atio->u.raw.entry_count);
4084 /*
4085 * In tgt_stop mode we also should allow all requests to pass.
4086 * Otherwise, some commands can stuck.
4087 */
4088
4089 tgt->irq_cmd_count++;
4090
4091 switch (atio->u.raw.entry_type) {
4092 case ATIO_TYPE7:
4093 ql_dbg(ql_dbg_tgt, vha, 0xe02d,
f83adb61 4094 "ATIO_TYPE7 instance %d, lun %Lx, read/write %d/%d, cdb %x, add_cdb_len %x, data_length %04x, s_id %02x%02x%02x\n",
2d70c103
NB		 4095 vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
4096 atio->u.isp24.fcp_cmnd.rddata,
4097 atio->u.isp24.fcp_cmnd.wrdata,
f83adb61 4098 atio->u.isp24.fcp_cmnd.cdb[0],
2d70c103
NB		 4099 atio->u.isp24.fcp_cmnd.add_cdb_len,
4100 be32_to_cpu(get_unaligned((uint32_t *)
4101 &atio->u.isp24.fcp_cmnd.add_cdb[
4102 atio->u.isp24.fcp_cmnd.add_cdb_len])),
4103 atio->u.isp24.fcp_hdr.s_id[0],
4104 atio->u.isp24.fcp_hdr.s_id[1],
4105 atio->u.isp24.fcp_hdr.s_id[2]);
4106
4107 if (unlikely(atio->u.isp24.exchange_addr ==
4108 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
4109 ql_dbg(ql_dbg_tgt, vha, 0xe058,
4110 "qla_target(%d): ATIO_TYPE7 "
4111 "received with UNKNOWN exchange address, "
4112 "sending QUEUE_FULL\n", vha->vp_idx);
4113 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
4114 break;
4115 }
4116 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
4117 rc = qlt_handle_cmd_for_atio(vha, atio);
4118 else
4119 rc = qlt_handle_task_mgmt(vha, atio);
4120 if (unlikely(rc != 0)) {
4121 if (rc == -ESRCH) {
4122#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4123 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4124#else
4125 qlt_send_term_exchange(vha, NULL, atio, 1);
4126#endif
4127 } else {
4128 if (tgt->tgt_stop) {
4129 ql_dbg(ql_dbg_tgt, vha, 0xe059,
4130 "qla_target: Unable to send "
4131 "command to target for req, "
4132 "ignoring.\n");
4133 } else {
4134 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
4135 "qla_target(%d): Unable to send "
4136 "command to target, sending BUSY "
4137 "status.\n", vha->vp_idx);
4138 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4139 }
4140 }
4141 }
4142 break;
4143
4144 case IMMED_NOTIFY_TYPE:
4145 {
4146 if (unlikely(atio->u.isp2x.entry_status != 0)) {
4147 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
4148 "qla_target(%d): Received ATIO packet %x "
4149 "with error status %x\n", vha->vp_idx,
4150 atio->u.raw.entry_type,
4151 atio->u.isp2x.entry_status);
4152 break;
4153 }
4154 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
4155 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
4156 break;
4157 }
4158
4159 default:
4160 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
4161 "qla_target(%d): Received unknown ATIO atio "
4162 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
4163 break;
4164 }
4165
4166 tgt->irq_cmd_count--;
4167}
4168
4169/* ha->hardware_lock supposed to be held on entry */
4170/* called via callback from qla2xxx */
4171static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
4172{
4173 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4174 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4175
4176 if (unlikely(tgt == NULL)) {
4177 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
4178 "qla_target(%d): Response pkt %x received, but no "
4179 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
4180 return;
4181 }
4182
4183 ql_dbg(ql_dbg_tgt, vha, 0xe02f,
4184 "qla_target(%d): response pkt %p: T %02x C %02x S %02x "
4185 "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
4186 pkt->entry_count, pkt->entry_status, pkt->handle);
4187
4188 /*
4189 * In tgt_stop mode we also should allow all requests to pass.
4190 * Otherwise, some commands can stuck.
4191 */
4192
4193 tgt->irq_cmd_count++;
4194
4195 switch (pkt->entry_type) {
f83adb61 4196 case CTIO_CRC2:
2d70c103
NB		 4197 case CTIO_TYPE7:
4198 {
4199 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
f83adb61
QT		 4200 ql_dbg(ql_dbg_tgt, vha, 0xe030,
4201 "CTIO[0x%x] 12/CTIO7 7A/CRC2: instance %d\n",
4202 entry->entry_type, vha->vp_idx);
2d70c103
NB		 4203 qlt_do_ctio_completion(vha, entry->handle,
4204 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4205 entry);
4206 break;
4207 }
4208
4209 case ACCEPT_TGT_IO_TYPE:
4210 {
4211 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
4212 int rc;
4213 ql_dbg(ql_dbg_tgt, vha, 0xe031,
4214 "ACCEPT_TGT_IO instance %d status %04x "
4215 "lun %04x read/write %d data_length %04x "
4216 "target_id %02x rx_id %04x\n ", vha->vp_idx,
4217 le16_to_cpu(atio->u.isp2x.status),
4218 le16_to_cpu(atio->u.isp2x.lun),
4219 atio->u.isp2x.execution_codes,
4220 le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
4221 atio), atio->u.isp2x.rx_id);
4222 if (atio->u.isp2x.status !=
4223 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
4224 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
4225 "qla_target(%d): ATIO with error "
4226 "status %x received\n", vha->vp_idx,
4227 le16_to_cpu(atio->u.isp2x.status));
4228 break;
4229 }
4230 ql_dbg(ql_dbg_tgt, vha, 0xe032,
4231 "FCP CDB: 0x%02x, sizeof(cdb): %lu",
4232 atio->u.isp2x.cdb[0], (unsigned long
4233 int)sizeof(atio->u.isp2x.cdb));
4234
4235 rc = qlt_handle_cmd_for_atio(vha, atio);
4236 if (unlikely(rc != 0)) {
4237 if (rc == -ESRCH) {
4238#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4239 qlt_send_busy(vha, atio, 0);
4240#else
4241 qlt_send_term_exchange(vha, NULL, atio, 1);
4242#endif
4243 } else {
4244 if (tgt->tgt_stop) {
4245 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
4246 "qla_target: Unable to send "
4247 "command to target, sending TERM "
4248 "EXCHANGE for rsp\n");
4249 qlt_send_term_exchange(vha, NULL,
4250 atio, 1);
4251 } else {
4252 ql_dbg(ql_dbg_tgt, vha, 0xe060,
4253 "qla_target(%d): Unable to send "
4254 "command to target, sending BUSY "
4255 "status\n", vha->vp_idx);
4256 qlt_send_busy(vha, atio, 0);
4257 }
4258 }
4259 }
4260 }
4261 break;
4262
4263 case CONTINUE_TGT_IO_TYPE:
4264 {
4265 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4266 ql_dbg(ql_dbg_tgt, vha, 0xe033,
4267 "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
4268 qlt_do_ctio_completion(vha, entry->handle,
4269 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4270 entry);
4271 break;
4272 }
4273
4274 case CTIO_A64_TYPE:
4275 {
4276 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4277 ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
4278 vha->vp_idx);
4279 qlt_do_ctio_completion(vha, entry->handle,
4280 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4281 entry);
4282 break;
4283 }
4284
4285 case IMMED_NOTIFY_TYPE:
4286 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
4287 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
4288 break;
4289
4290 case NOTIFY_ACK_TYPE:
4291 if (tgt->notify_ack_expected > 0) {
4292 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
4293 ql_dbg(ql_dbg_tgt, vha, 0xe036,
4294 "NOTIFY_ACK seq %08x status %x\n",
4295 le16_to_cpu(entry->u.isp2x.seq_id),
4296 le16_to_cpu(entry->u.isp2x.status));
4297 tgt->notify_ack_expected--;
4298 if (entry->u.isp2x.status !=
4299 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
4300 ql_dbg(ql_dbg_tgt, vha, 0xe061,
4301 "qla_target(%d): NOTIFY_ACK "
4302 "failed %x\n", vha->vp_idx,
4303 le16_to_cpu(entry->u.isp2x.status));
4304 }
4305 } else {
4306 ql_dbg(ql_dbg_tgt, vha, 0xe062,
4307 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
4308 vha->vp_idx);
4309 }
4310 break;
4311
4312 case ABTS_RECV_24XX:
4313 ql_dbg(ql_dbg_tgt, vha, 0xe037,
4314 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
4315 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
4316 break;
4317
4318 case ABTS_RESP_24XX:
4319 if (tgt->abts_resp_expected > 0) {
4320 struct abts_resp_from_24xx_fw *entry =
4321 (struct abts_resp_from_24xx_fw *)pkt;
4322 ql_dbg(ql_dbg_tgt, vha, 0xe038,
4323 "ABTS_RESP_24XX: compl_status %x\n",
4324 entry->compl_status);
4325 tgt->abts_resp_expected--;
4326 if (le16_to_cpu(entry->compl_status) !=
4327 ABTS_RESP_COMPL_SUCCESS) {
4328 if ((entry->error_subcode1 == 0x1E) &&
4329 (entry->error_subcode2 == 0)) {
4330 /*
4331 * We've got a race here: aborted
4332 * exchange not terminated, i.e.
4333 * response for the aborted command was
4334 * sent between the abort request was
4335 * received and processed.
4336 * Unfortunately, the firmware has a
4337 * silly requirement that all aborted
4338 * exchanges must be explicitely
4339 * terminated, otherwise it refuses to
4340 * send responses for the abort
4341 * requests. So, we have to
4342 * (re)terminate the exchange and retry
4343 * the abort response.
4344 */
4345 qlt_24xx_retry_term_exchange(vha,
4346 entry);
4347 } else
4348 ql_dbg(ql_dbg_tgt, vha, 0xe063,
4349 "qla_target(%d): ABTS_RESP_24XX "
4350 "failed %x (subcode %x:%x)",
4351 vha->vp_idx, entry->compl_status,
4352 entry->error_subcode1,
4353 entry->error_subcode2);
4354 }
4355 } else {
4356 ql_dbg(ql_dbg_tgt, vha, 0xe064,
4357 "qla_target(%d): Unexpected ABTS_RESP_24XX "
4358 "received\n", vha->vp_idx);
4359 }
4360 break;
4361
4362 default:
4363 ql_dbg(ql_dbg_tgt, vha, 0xe065,
4364 "qla_target(%d): Received unknown response pkt "
4365 "type %x\n", vha->vp_idx, pkt->entry_type);
4366 break;
4367 }
4368
4369 tgt->irq_cmd_count--;
4370}
4371
4372/*
4373 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4374 */
4375void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
4376 uint16_t *mailbox)
4377{
4378 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4379 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 4380 int login_code;
2d70c103
NB		 4381
4382 ql_dbg(ql_dbg_tgt, vha, 0xe039,
4383 "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
4384 vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
4385 ha->operating_mode, ha->current_topology);
4386
4387 if (!ha->tgt.tgt_ops)
4388 return;
4389
4390 if (unlikely(tgt == NULL)) {
4391 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
4392 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
4393 return;
4394 }
4395
4396 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
4397 IS_QLA2100(ha))
4398 return;
4399 /*
4400 * In tgt_stop mode we also should allow all requests to pass.
4401 * Otherwise, some commands can stuck.
4402 */
4403
4404 tgt->irq_cmd_count++;
4405
4406 switch (code) {
4407 case MBA_RESET: /* Reset */
4408 case MBA_SYSTEM_ERR: /* System Error */
4409 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
4410 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
4411 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
4412 "qla_target(%d): System error async event %#x "
6efb3c0a 4413 "occurred", vha->vp_idx, code);
2d70c103
NB		 4414 break;
4415 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
4416 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4417 break;
4418
4419 case MBA_LOOP_UP:
4420 {
4421 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 4422 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 4423 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4424 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4425 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4426 if (tgt->link_reinit_iocb_pending) {
4427 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
4428 0, 0, 0, 0, 0, 0);
4429 tgt->link_reinit_iocb_pending = 0;
4430 }
4431 break;
4432 }
4433
4434 case MBA_LIP_OCCURRED:
4435 case MBA_LOOP_DOWN:
4436 case MBA_LIP_RESET:
4437 case MBA_RSCN_UPDATE:
4438 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 4439 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 4440 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4441 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4442 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4443 break;
4444
4445 case MBA_PORT_UPDATE:
4446 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
4447 "qla_target(%d): Port update async event %#x "
6efb3c0a 4448 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 4449 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4450 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4451 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
4452
4453 login_code = le16_to_cpu(mailbox[2]);
4454 if (login_code == 0x4)
2d70c103
NB		 4455 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
4456 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 4457 else if (login_code == 0x7)
2d70c103
NB		 4458 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
4459 "Async MB 2: Port Logged Out\n");
4460 break;
4461
4462 default:
4463 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
6efb3c0a 4464 "qla_target(%d): Async event %#x occurred: "
4f1d0f19
AC		 4465 "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4466 code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4467 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4468 break;
4469 }
4470
4471 tgt->irq_cmd_count--;
4472}
4473
4474static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
4475 uint16_t loop_id)
4476{
4477 fc_port_t *fcport;
4478 int rc;
4479
4480 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
4481 if (!fcport) {
4482 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
4483 "qla_target(%d): Allocation of tmp FC port failed",
4484 vha->vp_idx);
4485 return NULL;
4486 }
4487
4488 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
4489
4490 fcport->loop_id = loop_id;
4491
4492 rc = qla2x00_get_port_database(vha, fcport, 0);
4493 if (rc != QLA_SUCCESS) {
4494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
4495 "qla_target(%d): Failed to retrieve fcport "
4496 "information -- get_port_database() returned %x "
4497 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
4498 kfree(fcport);
4499 return NULL;
4500 }
4501
4502 return fcport;
4503}
4504
4505/* Must be called under tgt_mutex */
4506static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
4507 uint8_t *s_id)
4508{
2d70c103
NB		 4509 struct qla_tgt_sess *sess = NULL;
4510 fc_port_t *fcport = NULL;
4511 int rc, global_resets;
4512 uint16_t loop_id = 0;
4513
4514retry:
0e8cd71c
SK		 4515 global_resets =
4516 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 4517
4518 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
4519 if (rc != 0) {
4520 if ((s_id[0] == 0xFF) &&
4521 (s_id[1] == 0xFC)) {
4522 /*
4523 * This is Domain Controller, so it should be
4524 * OK to drop SCSI commands from it.
4525 */
4526 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
4527 "Unable to find initiator with S_ID %x:%x:%x",
4528 s_id[0], s_id[1], s_id[2]);
4529 } else
4530 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
4531 "qla_target(%d): Unable to find "
4532 "initiator with S_ID %x:%x:%x",
4533 vha->vp_idx, s_id[0], s_id[1],
4534 s_id[2]);
4535 return NULL;
4536 }
4537
4538 fcport = qlt_get_port_database(vha, loop_id);
4539 if (!fcport)
4540 return NULL;
4541
4542 if (global_resets !=
0e8cd71c 4543 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 4544 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
4545 "qla_target(%d): global reset during session discovery "
4546 "(counter was %d, new %d), retrying", vha->vp_idx,
4547 global_resets,
0e8cd71c
SK		 4548 atomic_read(&vha->vha_tgt.
4549 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 4550 goto retry;
4551 }
4552
4553 sess = qlt_create_sess(vha, fcport, true);
4554
4555 kfree(fcport);
4556 return sess;
4557}
4558
4559static void qlt_abort_work(struct qla_tgt *tgt,
4560 struct qla_tgt_sess_work_param *prm)
4561{
4562 struct scsi_qla_host *vha = tgt->vha;
4563 struct qla_hw_data *ha = vha->hw;
4564 struct qla_tgt_sess *sess = NULL;
4565 unsigned long flags;
4566 uint32_t be_s_id;
4567 uint8_t s_id[3];
4568 int rc;
4569
4570 spin_lock_irqsave(&ha->hardware_lock, flags);
4571
4572 if (tgt->tgt_stop)
4573 goto out_term;
4574
4575 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
4576 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
4577 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
4578
4579 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4580 (unsigned char *)&be_s_id);
4581 if (!sess) {
4582 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4583
0e8cd71c 4584 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4585 sess = qlt_make_local_sess(vha, s_id);
4586 /* sess has got an extra creation ref */
0e8cd71c 4587 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4588
4589 spin_lock_irqsave(&ha->hardware_lock, flags);
4590 if (!sess)
4591 goto out_term;
4592 } else {
4593 kref_get(&sess->se_sess->sess_kref);
4594 }
4595
4596 if (tgt->tgt_stop)
4597 goto out_term;
4598
4599 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4600 if (rc != 0)
4601 goto out_term;
2d70c103
NB		 4602
4603 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4604 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4605 return;
4606
4607out_term:
4608 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
2d70c103
NB		 4609 if (sess)
4610 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4611 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4612}
4613
4614static void qlt_tmr_work(struct qla_tgt *tgt,
4615 struct qla_tgt_sess_work_param *prm)
4616{
4617 struct atio_from_isp *a = &prm->tm_iocb2;
4618 struct scsi_qla_host *vha = tgt->vha;
4619 struct qla_hw_data *ha = vha->hw;
4620 struct qla_tgt_sess *sess = NULL;
4621 unsigned long flags;
4622 uint8_t *s_id = NULL; /* to hide compiler warnings */
4623 int rc;
4624 uint32_t lun, unpacked_lun;
4625 int lun_size, fn;
4626 void *iocb;
4627
4628 spin_lock_irqsave(&ha->hardware_lock, flags);
4629
4630 if (tgt->tgt_stop)
4631 goto out_term;
4632
4633 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4634 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4635 if (!sess) {
4636 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4637
0e8cd71c 4638 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4639 sess = qlt_make_local_sess(vha, s_id);
4640 /* sess has got an extra creation ref */
0e8cd71c 4641 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4642
4643 spin_lock_irqsave(&ha->hardware_lock, flags);
4644 if (!sess)
4645 goto out_term;
4646 } else {
4647 kref_get(&sess->se_sess->sess_kref);
4648 }
4649
4650 iocb = a;
4651 lun = a->u.isp24.fcp_cmnd.lun;
4652 lun_size = sizeof(lun);
4653 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4654 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4655
4656 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4657 if (rc != 0)
4658 goto out_term;
2d70c103
NB		 4659
4660 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4661 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4662 return;
4663
4664out_term:
4665 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
2d70c103
NB		 4666 if (sess)
4667 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4668 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4669}
4670
4671static void qlt_sess_work_fn(struct work_struct *work)
4672{
4673 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4674 struct scsi_qla_host *vha = tgt->vha;
4675 unsigned long flags;
4676
4677 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4678
4679 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4680 while (!list_empty(&tgt->sess_works_list)) {
4681 struct qla_tgt_sess_work_param *prm = list_entry(
4682 tgt->sess_works_list.next, typeof(*prm),
4683 sess_works_list_entry);
4684
4685 /*
4686 * This work can be scheduled on several CPUs at time, so we
4687 * must delete the entry to eliminate double processing
4688 */
4689 list_del(&prm->sess_works_list_entry);
4690
4691 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4692
4693 switch (prm->type) {
4694 case QLA_TGT_SESS_WORK_ABORT:
4695 qlt_abort_work(tgt, prm);
4696 break;
4697 case QLA_TGT_SESS_WORK_TM:
4698 qlt_tmr_work(tgt, prm);
4699 break;
4700 default:
4701 BUG_ON(1);
4702 break;
4703 }
4704
4705 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4706
4707 kfree(prm);
4708 }
4709 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4710}
4711
4712/* Must be called under tgt_host_action_mutex */
4713int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4714{
4715 struct qla_tgt *tgt;
4716
4717 if (!QLA_TGT_MODE_ENABLED())
4718 return 0;
4719
33c36c0a
AE		 4720 if (!IS_TGT_MODE_CAPABLE(ha)) {
4721 ql_log(ql_log_warn, base_vha, 0xe070,
4722 "This adapter does not support target mode.\n");
4723 return 0;
4724 }
4725
2d70c103 4726 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 4727 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 4728
0e8cd71c 4729 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 4730
4731 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4732 if (!tgt) {
4733 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4734 "Unable to allocate struct qla_tgt\n");
4735 return -ENOMEM;
4736 }
4737
4738 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4739 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4740
4741 tgt->ha = ha;
4742 tgt->vha = base_vha;
4743 init_waitqueue_head(&tgt->waitQ);
4744 INIT_LIST_HEAD(&tgt->sess_list);
4745 INIT_LIST_HEAD(&tgt->del_sess_list);
4746 INIT_DELAYED_WORK(&tgt->sess_del_work,
4747 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4748 spin_lock_init(&tgt->sess_work_lock);
4749 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4750 INIT_LIST_HEAD(&tgt->sess_works_list);
4751 spin_lock_init(&tgt->srr_lock);
4752 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4753 INIT_LIST_HEAD(&tgt->srr_imm_list);
4754 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4755 atomic_set(&tgt->tgt_global_resets_count, 0);
4756
0e8cd71c 4757 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 4758
4759 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4760 "qla_target(%d): using 64 Bit PCI addressing",
4761 base_vha->vp_idx);
4762 tgt->tgt_enable_64bit_addr = 1;
4763 /* 3 is reserved */
4764 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4765 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4766 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4767
ddb95145
NB		 4768 if (base_vha->fc_vport)
4769 return 0;
4770
2d70c103
NB		 4771 mutex_lock(&qla_tgt_mutex);
4772 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4773 mutex_unlock(&qla_tgt_mutex);
4774
4775 return 0;
4776}
4777
4778/* Must be called under tgt_host_action_mutex */
4779int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4780{
0e8cd71c 4781 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 4782 return 0;
4783
ddb95145
NB		 4784 if (vha->fc_vport) {
4785 qlt_release(vha->vha_tgt.qla_tgt);
4786 return 0;
4787 }
2d70c103 4788 mutex_lock(&qla_tgt_mutex);
0e8cd71c 4789 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 4790 mutex_unlock(&qla_tgt_mutex);
4791
4792 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4793 vha->host_no, ha);
0e8cd71c 4794 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 4795
4796 return 0;
4797}
4798
4799static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4800 unsigned char *b)
4801{
4802 int i;
4803
4804 pr_debug("qla2xxx HW vha->node_name: ");
4805 for (i = 0; i < WWN_SIZE; i++)
4806 pr_debug("%02x ", vha->node_name[i]);
4807 pr_debug("\n");
4808 pr_debug("qla2xxx HW vha->port_name: ");
4809 for (i = 0; i < WWN_SIZE; i++)
4810 pr_debug("%02x ", vha->port_name[i]);
4811 pr_debug("\n");
4812
4813 pr_debug("qla2xxx passed configfs WWPN: ");
4814 put_unaligned_be64(wwpn, b);
4815 for (i = 0; i < WWN_SIZE; i++)
4816 pr_debug("%02x ", b[i]);
4817 pr_debug("\n");
4818}
4819
4820/**
4821 * qla_tgt_lport_register - register lport with external module
4822 *
4823 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4824 * @wwpn: Passwd FC target WWPN
4825 * @callback: lport initialization callback for tcm_qla2xxx code
4826 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4827 */
49a47f2c
NB		 4828int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
4829 u64 npiv_wwpn, u64 npiv_wwnn,
4830 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 4831{
4832 struct qla_tgt *tgt;
4833 struct scsi_qla_host *vha;
4834 struct qla_hw_data *ha;
4835 struct Scsi_Host *host;
4836 unsigned long flags;
4837 int rc;
4838 u8 b[WWN_SIZE];
4839
4840 mutex_lock(&qla_tgt_mutex);
4841 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4842 vha = tgt->vha;
4843 ha = vha->hw;
4844
4845 host = vha->host;
4846 if (!host)
4847 continue;
4848
2d70c103
NB		 4849 if (!(host->hostt->supported_mode & MODE_TARGET))
4850 continue;
4851
4852 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 4853 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 4854 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4855 host->host_no);
4856 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4857 continue;
4858 }
ddb95145
NB		 4859 if (tgt->tgt_stop) {
4860 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
4861 host->host_no);
4862 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4863 continue;
4864 }
2d70c103
NB		 4865 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4866
4867 if (!scsi_host_get(host)) {
4868 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4869 "Unable to scsi_host_get() for"
4870 " qla2xxx scsi_host\n");
4871 continue;
4872 }
49a47f2c 4873 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 4874
4875 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4876 scsi_host_put(host);
4877 continue;
4878 }
49a47f2c
NB		 4879 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
4880 if (rc != 0)
4881 scsi_host_put(host);
4882
ddb95145 4883 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 4884 return rc;
4885 }
4886 mutex_unlock(&qla_tgt_mutex);
4887
4888 return -ENODEV;
4889}
4890EXPORT_SYMBOL(qlt_lport_register);
4891
4892/**
4893 * qla_tgt_lport_deregister - Degister lport
4894 *
4895 * @vha: Registered scsi_qla_host pointer
4896 */
4897void qlt_lport_deregister(struct scsi_qla_host *vha)
4898{
4899 struct qla_hw_data *ha = vha->hw;
4900 struct Scsi_Host *sh = vha->host;
4901 /*
4902 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
4903 */
0e8cd71c 4904 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 4905 ha->tgt.tgt_ops = NULL;
4906 /*
4907 * Release the Scsi_Host reference for the underlying qla2xxx host
4908 */
4909 scsi_host_put(sh);
4910}
4911EXPORT_SYMBOL(qlt_lport_deregister);
4912
4913/* Must be called under HW lock */
4914void qlt_set_mode(struct scsi_qla_host *vha)
4915{
4916 struct qla_hw_data *ha = vha->hw;
4917
4918 switch (ql2x_ini_mode) {
4919 case QLA2XXX_INI_MODE_DISABLED:
4920 case QLA2XXX_INI_MODE_EXCLUSIVE:
4921 vha->host->active_mode = MODE_TARGET;
4922 break;
4923 case QLA2XXX_INI_MODE_ENABLED:
4924 vha->host->active_mode |= MODE_TARGET;
4925 break;
4926 default:
4927 break;
4928 }
4929
4930 if (ha->tgt.ini_mode_force_reverse)
4931 qla_reverse_ini_mode(vha);
4932}
4933
4934/* Must be called under HW lock */
4935void qlt_clear_mode(struct scsi_qla_host *vha)
4936{
4937 struct qla_hw_data *ha = vha->hw;
4938
4939 switch (ql2x_ini_mode) {
4940 case QLA2XXX_INI_MODE_DISABLED:
4941 vha->host->active_mode = MODE_UNKNOWN;
4942 break;
4943 case QLA2XXX_INI_MODE_EXCLUSIVE:
4944 vha->host->active_mode = MODE_INITIATOR;
4945 break;
4946 case QLA2XXX_INI_MODE_ENABLED:
4947 vha->host->active_mode &= ~MODE_TARGET;
4948 break;
4949 default:
4950 break;
4951 }
4952
4953 if (ha->tgt.ini_mode_force_reverse)
4954 qla_reverse_ini_mode(vha);
4955}
4956
4957/*
4958 * qla_tgt_enable_vha - NO LOCK HELD
4959 *
4960 * host_reset, bring up w/ Target Mode Enabled
4961 */
4962void
4963qlt_enable_vha(struct scsi_qla_host *vha)
4964{
4965 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4966 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 4967 unsigned long flags;
0e8cd71c 4968 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 4969
4970 if (!tgt) {
4971 ql_dbg(ql_dbg_tgt, vha, 0xe069,
4972 "Unable to locate qla_tgt pointer from"
4973 " struct qla_hw_data\n");
4974 dump_stack();
4975 return;
4976 }
4977
4978 spin_lock_irqsave(&ha->hardware_lock, flags);
4979 tgt->tgt_stopped = 0;
4980 qlt_set_mode(vha);
4981 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4982
0e8cd71c
SK		 4983 if (vha->vp_idx) {
4984 qla24xx_disable_vp(vha);
4985 qla24xx_enable_vp(vha);
4986 } else {
4987 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
4988 qla2xxx_wake_dpc(base_vha);
4989 qla2x00_wait_for_hba_online(base_vha);
4990 }
2d70c103
NB		 4991}
4992EXPORT_SYMBOL(qlt_enable_vha);
4993
4994/*
4995 * qla_tgt_disable_vha - NO LOCK HELD
4996 *
4997 * Disable Target Mode and reset the adapter
4998 */
4999void
5000qlt_disable_vha(struct scsi_qla_host *vha)
5001{
5002 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5003 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5004 unsigned long flags;
5005
5006 if (!tgt) {
5007 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
5008 "Unable to locate qla_tgt pointer from"
5009 " struct qla_hw_data\n");
5010 dump_stack();
5011 return;
5012 }
5013
5014 spin_lock_irqsave(&ha->hardware_lock, flags);
5015 qlt_clear_mode(vha);
5016 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5017
5018 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5019 qla2xxx_wake_dpc(vha);
5020 qla2x00_wait_for_hba_online(vha);
5021}
5022
5023/*
5024 * Called from qla_init.c:qla24xx_vport_create() contex to setup
5025 * the target mode specific struct scsi_qla_host and struct qla_hw_data
5026 * members.
5027 */
5028void
5029qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
5030{
5031 if (!qla_tgt_mode_enabled(vha))
5032 return;
5033
0e8cd71c
SK		 5034 vha->vha_tgt.qla_tgt = NULL;
5035
5036 mutex_init(&vha->vha_tgt.tgt_mutex);
5037 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5038
5039 qlt_clear_mode(vha);
5040
5041 /*
5042 * NOTE: Currently the value is kept the same for <24xx and
5043 * >=24xx ISPs. If it is necessary to change it,
5044 * the check should be added for specific ISPs,
5045 * assigning the value appropriately.
5046 */
5047 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 5048
5049 qlt_add_target(ha, vha);
2d70c103
NB		 5050}
5051
5052void
5053qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
5054{
5055 /*
5056 * FC-4 Feature bit 0 indicates target functionality to the name server.
5057 */
5058 if (qla_tgt_mode_enabled(vha)) {
5059 if (qla_ini_mode_enabled(vha))
5060 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
5061 else
5062 ct_req->req.rff_id.fc4_feature = BIT_0;
5063 } else if (qla_ini_mode_enabled(vha)) {
5064 ct_req->req.rff_id.fc4_feature = BIT_1;
5065 }
5066}
5067
5068/*
5069 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
5070 * @ha: HA context
5071 *
5072 * Beginning of ATIO ring has initialization control block already built
5073 * by nvram config routine.
5074 *
5075 * Returns 0 on success.
5076 */
5077void
5078qlt_init_atio_q_entries(struct scsi_qla_host *vha)
5079{
5080 struct qla_hw_data *ha = vha->hw;
5081 uint16_t cnt;
5082 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
5083
5084 if (!qla_tgt_mode_enabled(vha))
5085 return;
5086
5087 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
5088 pkt->u.raw.signature = ATIO_PROCESSED;
5089 pkt++;
5090 }
5091
5092}
5093
5094/*
5095 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
5096 * @ha: SCSI driver HA context
5097 */
5098void
5099qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
5100{
5101 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 5102 struct atio_from_isp *pkt;
5103 int cnt, i;
5104
5105 if (!vha->flags.online)
5106 return;
5107
5108 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
5109 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5110 cnt = pkt->u.raw.entry_count;
5111
5112 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
5113
5114 for (i = 0; i < cnt; i++) {
5115 ha->tgt.atio_ring_index++;
5116 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
5117 ha->tgt.atio_ring_index = 0;
5118 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
5119 } else
5120 ha->tgt.atio_ring_ptr++;
5121
5122 pkt->u.raw.signature = ATIO_PROCESSED;
5123 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5124 }
5125 wmb();
5126 }
5127
5128 /* Adjust ring index */
aa230bc5 5129 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 5130}
5131
5132void
aa230bc5 5133qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 5134{
5135 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 5136 if (!QLA_TGT_MODE_ENABLED())
5137 return;
2d70c103 5138
aa230bc5
AE		 5139 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
5140 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
5141 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
5142
5143 if (IS_ATIO_MSIX_CAPABLE(ha)) {
5144 struct qla_msix_entry *msix = &ha->msix_entries[2];
5145 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
5146
5147 icb->msix_atio = cpu_to_le16(msix->entry);
5148 ql_dbg(ql_dbg_init, vha, 0xf072,
5149 "Registering ICB vector 0x%x for atio que.\n",
5150 msix->entry);
2d70c103
NB		 5151 }
5152}
5153
5154void
5155qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
5156{
5157 struct qla_hw_data *ha = vha->hw;
5158
5159 if (qla_tgt_mode_enabled(vha)) {
5160 if (!ha->tgt.saved_set) {
5161 /* We save only once */
5162 ha->tgt.saved_exchange_count = nv->exchange_count;
5163 ha->tgt.saved_firmware_options_1 =
5164 nv->firmware_options_1;
5165 ha->tgt.saved_firmware_options_2 =
5166 nv->firmware_options_2;
5167 ha->tgt.saved_firmware_options_3 =
5168 nv->firmware_options_3;
5169 ha->tgt.saved_set = 1;
5170 }
5171
5172 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5173
5174 /* Enable target mode */
5175 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5176
5177 /* Disable ini mode, if requested */
5178 if (!qla_ini_mode_enabled(vha))
5179 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
5180
5181 /* Disable Full Login after LIP */
5182 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5183 /* Enable initial LIP */
5184 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5185 /* Enable FC tapes support */
5186 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5187 /* Disable Full Login after LIP */
5188 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5189 /* Enable target PRLI control */
5190 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5191 } else {
5192 if (ha->tgt.saved_set) {
5193 nv->exchange_count = ha->tgt.saved_exchange_count;
5194 nv->firmware_options_1 =
5195 ha->tgt.saved_firmware_options_1;
5196 nv->firmware_options_2 =
5197 ha->tgt.saved_firmware_options_2;
5198 nv->firmware_options_3 =
5199 ha->tgt.saved_firmware_options_3;
5200 }
5201 return;
5202 }
5203
5204 /* out-of-order frames reassembly */
5205 nv->firmware_options_3 |= BIT_6|BIT_9;
5206
5207 if (ha->tgt.enable_class_2) {
5208 if (vha->flags.init_done)
5209 fc_host_supported_classes(vha->host) =
5210 FC_COS_CLASS2 | FC_COS_CLASS3;
5211
5212 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5213 } else {
5214 if (vha->flags.init_done)
5215 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5216
5217 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5218 }
5219}
5220
5221void
5222qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
5223 struct init_cb_24xx *icb)
5224{
5225 struct qla_hw_data *ha = vha->hw;
5226
5227 if (ha->tgt.node_name_set) {
5228 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5229 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5230 }
5231}
5232
aa230bc5
AE		 5233void
5234qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
5235{
5236 struct qla_hw_data *ha = vha->hw;
5237
5238 if (!QLA_TGT_MODE_ENABLED())
5239 return;
5240
5241 if (qla_tgt_mode_enabled(vha)) {
5242 if (!ha->tgt.saved_set) {
5243 /* We save only once */
5244 ha->tgt.saved_exchange_count = nv->exchange_count;
5245 ha->tgt.saved_firmware_options_1 =
5246 nv->firmware_options_1;
5247 ha->tgt.saved_firmware_options_2 =
5248 nv->firmware_options_2;
5249 ha->tgt.saved_firmware_options_3 =
5250 nv->firmware_options_3;
5251 ha->tgt.saved_set = 1;
5252 }
5253
5254 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5255
5256 /* Enable target mode */
5257 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5258
5259 /* Disable ini mode, if requested */
5260 if (!qla_ini_mode_enabled(vha))
5261 nv->firmware_options_1 |=
5262 __constant_cpu_to_le32(BIT_5);
5263
5264 /* Disable Full Login after LIP */
5265 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5266 /* Enable initial LIP */
5267 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5268 /* Enable FC tapes support */
5269 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5270 /* Disable Full Login after LIP */
5271 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5272 /* Enable target PRLI control */
5273 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5274 } else {
5275 if (ha->tgt.saved_set) {
5276 nv->exchange_count = ha->tgt.saved_exchange_count;
5277 nv->firmware_options_1 =
5278 ha->tgt.saved_firmware_options_1;
5279 nv->firmware_options_2 =
5280 ha->tgt.saved_firmware_options_2;
5281 nv->firmware_options_3 =
5282 ha->tgt.saved_firmware_options_3;
5283 }
5284 return;
5285 }
5286
5287 /* out-of-order frames reassembly */
5288 nv->firmware_options_3 |= BIT_6|BIT_9;
5289
5290 if (ha->tgt.enable_class_2) {
5291 if (vha->flags.init_done)
5292 fc_host_supported_classes(vha->host) =
5293 FC_COS_CLASS2 | FC_COS_CLASS3;
5294
5295 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5296 } else {
5297 if (vha->flags.init_done)
5298 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5299
5300 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5301 }
5302}
5303
5304void
5305qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
5306 struct init_cb_81xx *icb)
5307{
5308 struct qla_hw_data *ha = vha->hw;
5309
5310 if (!QLA_TGT_MODE_ENABLED())
5311 return;
5312
5313 if (ha->tgt.node_name_set) {
5314 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5315 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5316 }
5317}
5318
5319void
5320qlt_83xx_iospace_config(struct qla_hw_data *ha)
5321{
5322 if (!QLA_TGT_MODE_ENABLED())
5323 return;
5324
5325 ha->msix_count += 1; /* For ATIO Q */
5326}
5327
2d70c103
NB		 5328int
5329qlt_24xx_process_response_error(struct scsi_qla_host *vha,
5330 struct sts_entry_24xx *pkt)
5331{
5332 switch (pkt->entry_type) {
5333 case ABTS_RECV_24XX:
5334 case ABTS_RESP_24XX:
5335 case CTIO_TYPE7:
5336 case NOTIFY_ACK_TYPE:
f83adb61 5337 case CTIO_CRC2:
2d70c103
NB		 5338 return 1;
5339 default:
5340 return 0;
5341 }
5342}
5343
5344void
5345qlt_modify_vp_config(struct scsi_qla_host *vha,
5346 struct vp_config_entry_24xx *vpmod)
5347{
5348 if (qla_tgt_mode_enabled(vha))
5349 vpmod->options_idx1 &= ~BIT_5;
5350 /* Disable ini mode, if requested */
5351 if (!qla_ini_mode_enabled(vha))
5352 vpmod->options_idx1 &= ~BIT_4;
5353}
5354
5355void
5356qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
5357{
5358 if (!QLA_TGT_MODE_ENABLED())
5359 return;
5360
aa230bc5
AE		 5361 if (ha->mqenable || IS_QLA83XX(ha)) {
5362 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
5363 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
5364 } else {
5365 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
5366 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
5367 }
5368
0e8cd71c
SK		 5369 mutex_init(&base_vha->vha_tgt.tgt_mutex);
5370 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5371 qlt_clear_mode(base_vha);
5372}
5373
aa230bc5
AE		 5374irqreturn_t
5375qla83xx_msix_atio_q(int irq, void *dev_id)
5376{
5377 struct rsp_que *rsp;
5378 scsi_qla_host_t *vha;
5379 struct qla_hw_data *ha;
5380 unsigned long flags;
5381
5382 rsp = (struct rsp_que *) dev_id;
5383 ha = rsp->hw;
5384 vha = pci_get_drvdata(ha->pdev);
5385
5386 spin_lock_irqsave(&ha->hardware_lock, flags);
5387
5388 qlt_24xx_process_atio_queue(vha);
5389 qla24xx_process_response_queue(vha, rsp);
5390
5391 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5392
5393 return IRQ_HANDLED;
5394}
5395
2d70c103
NB		 5396int
5397qlt_mem_alloc(struct qla_hw_data *ha)
5398{
5399 if (!QLA_TGT_MODE_ENABLED())
5400 return 0;
5401
5402 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
5403 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
5404 if (!ha->tgt.tgt_vp_map)
5405 return -ENOMEM;
5406
5407 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
5408 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
5409 &ha->tgt.atio_dma, GFP_KERNEL);
5410 if (!ha->tgt.atio_ring) {
5411 kfree(ha->tgt.tgt_vp_map);
5412 return -ENOMEM;
5413 }
5414 return 0;
5415}
5416
5417void
5418qlt_mem_free(struct qla_hw_data *ha)
5419{
5420 if (!QLA_TGT_MODE_ENABLED())
5421 return;
5422
5423 if (ha->tgt.atio_ring) {
5424 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
5425 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
5426 ha->tgt.atio_dma);
5427 }
5428 kfree(ha->tgt.tgt_vp_map);
5429}
5430
5431/* vport_slock to be held by the caller */
5432void
5433qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
5434{
5435 if (!QLA_TGT_MODE_ENABLED())
5436 return;
5437
5438 switch (cmd) {
5439 case SET_VP_IDX:
5440 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
5441 break;
5442 case SET_AL_PA:
5443 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
5444 break;
5445 case RESET_VP_IDX:
5446 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
5447 break;
5448 case RESET_AL_PA:
5449 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
5450 break;
5451 }
5452}
5453
5454static int __init qlt_parse_ini_mode(void)
5455{
5456 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
5457 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
5458 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
5459 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
5460 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
5461 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
5462 else
5463 return false;
5464
5465 return true;
5466}
5467
5468int __init qlt_init(void)
5469{
5470 int ret;
5471
5472 if (!qlt_parse_ini_mode()) {
5473 ql_log(ql_log_fatal, NULL, 0xe06b,
5474 "qlt_parse_ini_mode() failed\n");
5475 return -EINVAL;
5476 }
5477
5478 if (!QLA_TGT_MODE_ENABLED())
5479 return 0;
5480
5481 qla_tgt_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep",
5482 sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd), 0,
5483 NULL);
5484 if (!qla_tgt_cmd_cachep) {
5485 ql_log(ql_log_fatal, NULL, 0xe06c,
5486 "kmem_cache_create for qla_tgt_cmd_cachep failed\n");
5487 return -ENOMEM;
5488 }
5489
5490 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
5491 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
5492 qla_tgt_mgmt_cmd), 0, NULL);
5493 if (!qla_tgt_mgmt_cmd_cachep) {
5494 ql_log(ql_log_fatal, NULL, 0xe06d,
5495 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
5496 ret = -ENOMEM;
5497 goto out;
5498 }
5499
5500 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
5501 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
5502 if (!qla_tgt_mgmt_cmd_mempool) {
5503 ql_log(ql_log_fatal, NULL, 0xe06e,
5504 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
5505 ret = -ENOMEM;
5506 goto out_mgmt_cmd_cachep;
5507 }
5508
5509 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
5510 if (!qla_tgt_wq) {
5511 ql_log(ql_log_fatal, NULL, 0xe06f,
5512 "alloc_workqueue for qla_tgt_wq failed\n");
5513 ret = -ENOMEM;
5514 goto out_cmd_mempool;
5515 }
5516 /*
5517 * Return 1 to signal that initiator-mode is being disabled
5518 */
5519 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
5520
5521out_cmd_mempool:
5522 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5523out_mgmt_cmd_cachep:
5524 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
5525out:
5526 kmem_cache_destroy(qla_tgt_cmd_cachep);
5527 return ret;
5528}
5529
5530void qlt_exit(void)
5531{
5532 if (!QLA_TGT_MODE_ENABLED())
5533 return;
5534
5535 destroy_workqueue(qla_tgt_wq);
5536 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5537 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
5538 kmem_cache_destroy(qla_tgt_cmd_cachep);
5539}
Linux kernel - Deliverables
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