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lpfc: Update lpfc version to driver version 10.2.8001.0
[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:
7b898542
QT		 2684 /*
2685 * Terminate exchange will tell fw to release any active CTIO
2686 * that's in FW posession and cleanup the exchange.
2687 *
2688 * "cmd->state == QLA_TGT_STATE_ABORTED" means CTIO is still
2689 * down at FW. Free the cmd later when CTIO comes back later
2690 * w/aborted(0x2) status.
2691 *
2692 * "cmd->state != QLA_TGT_STATE_ABORTED" means CTIO is already
2693 * back w/some err. Free the cmd now.
2694 */
2695 if ((rc == 1) && (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 2696 if (!ha_locked && !in_interrupt())
2697 msleep(250); /* just in case */
2698
f83adb61
QT		 2699 if (cmd->sg_mapped)
2700 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2701 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2702 }
7b898542 2703 return;
2d70c103
NB		 2704}
2705
2706void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2707{
f83adb61
QT		 2708 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
2709 "%s: se_cmd[%p] ox_id %04x\n",
2710 __func__, &cmd->se_cmd,
2711 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 2712
f83adb61 2713 BUG_ON(cmd->sg_mapped);
2d70c103
NB		 2714 if (unlikely(cmd->free_sg))
2715 kfree(cmd->sg);
2716 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2717}
2718EXPORT_SYMBOL(qlt_free_cmd);
2719
2720/* ha->hardware_lock supposed to be held on entry */
2721static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2722 struct qla_tgt_cmd *cmd, void *ctio)
2723{
2724 struct qla_tgt_srr_ctio *sc;
0e8cd71c 2725 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 2726 struct qla_tgt_srr_imm *imm;
2727
2728 tgt->ctio_srr_id++;
2729
2730 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2731 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2732
2733 if (!ctio) {
2734 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2735 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2736 vha->vp_idx);
2737 return -EINVAL;
2738 }
2739
2740 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2741 if (sc != NULL) {
2742 sc->cmd = cmd;
2743 /* IRQ is already OFF */
2744 spin_lock(&tgt->srr_lock);
2745 sc->srr_id = tgt->ctio_srr_id;
2746 list_add_tail(&sc->srr_list_entry,
2747 &tgt->srr_ctio_list);
2748 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2749 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2750 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2751 int found = 0;
2752 list_for_each_entry(imm, &tgt->srr_imm_list,
2753 srr_list_entry) {
2754 if (imm->srr_id == sc->srr_id) {
2755 found = 1;
2756 break;
2757 }
2758 }
2759 if (found) {
2760 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2761 "Scheduling srr work\n");
2762 schedule_work(&tgt->srr_work);
2763 } else {
2764 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2765 "qla_target(%d): imm_srr_id "
2766 "== ctio_srr_id (%d), but there is no "
2767 "corresponding SRR IMM, deleting CTIO "
2768 "SRR %p\n", vha->vp_idx,
2769 tgt->ctio_srr_id, sc);
2770 list_del(&sc->srr_list_entry);
2771 spin_unlock(&tgt->srr_lock);
2772
2773 kfree(sc);
2774 return -EINVAL;
2775 }
2776 }
2777 spin_unlock(&tgt->srr_lock);
2778 } else {
2779 struct qla_tgt_srr_imm *ti;
2780
2781 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2782 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2783 vha->vp_idx);
2784 spin_lock(&tgt->srr_lock);
2785 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2786 srr_list_entry) {
2787 if (imm->srr_id == tgt->ctio_srr_id) {
2788 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2789 "IMM SRR %p deleted (id %d)\n",
2790 imm, imm->srr_id);
2791 list_del(&imm->srr_list_entry);
2792 qlt_reject_free_srr_imm(vha, imm, 1);
2793 }
2794 }
2795 spin_unlock(&tgt->srr_lock);
2796
2797 return -ENOMEM;
2798 }
2799
2800 return 0;
2801}
2802
2803/*
2804 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2805 */
2806static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2807 struct qla_tgt_cmd *cmd, uint32_t status)
2808{
2809 int term = 0;
2810
2811 if (ctio != NULL) {
2812 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2813 term = !(c->flags &
2814 __constant_cpu_to_le16(OF_TERM_EXCH));
2815 } else
2816 term = 1;
2817
2818 if (term)
2819 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2820
2821 return term;
2822}
2823
2824/* ha->hardware_lock supposed to be held on entry */
2825static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2826 uint32_t handle)
2827{
2828 struct qla_hw_data *ha = vha->hw;
2829
2830 handle--;
2831 if (ha->tgt.cmds[handle] != NULL) {
2832 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2833 ha->tgt.cmds[handle] = NULL;
2834 return cmd;
2835 } else
2836 return NULL;
2837}
2838
2839/* ha->hardware_lock supposed to be held on entry */
2840static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2841 uint32_t handle, void *ctio)
2842{
2843 struct qla_tgt_cmd *cmd = NULL;
2844
2845 /* Clear out internal marks */
2846 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2847 CTIO_INTERMEDIATE_HANDLE_MARK);
2848
2849 if (handle != QLA_TGT_NULL_HANDLE) {
2850 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
2851 ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
2852 "SKIP_HANDLE CTIO\n");
2853 return NULL;
2854 }
2855 /* handle-1 is actually used */
8d93f550 2856 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 2857 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2858 "qla_target(%d): Wrong handle %x received\n",
2859 vha->vp_idx, handle);
2860 return NULL;
2861 }
2862 cmd = qlt_get_cmd(vha, handle);
2863 if (unlikely(cmd == NULL)) {
2864 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2865 "qla_target(%d): Suspicious: unable to "
2866 "find the command with handle %x\n", vha->vp_idx,
2867 handle);
2868 return NULL;
2869 }
2870 } else if (ctio != NULL) {
2871 /* We can't get loop ID from CTIO7 */
2872 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2873 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2874 "support NULL handles\n", vha->vp_idx);
2875 return NULL;
2876 }
2877
2878 return cmd;
2879}
2880
2881/*
2882 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2883 */
2884static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2885 uint32_t status, void *ctio)
2886{
2887 struct qla_hw_data *ha = vha->hw;
2888 struct se_cmd *se_cmd;
2889 struct target_core_fabric_ops *tfo;
2890 struct qla_tgt_cmd *cmd;
2891
2892 ql_dbg(ql_dbg_tgt, vha, 0xe01e,
2893 "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
2894 vha->vp_idx, ctio, status, handle);
2895
2896 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2897 /* That could happen only in case of an error/reset/abort */
2898 if (status != CTIO_SUCCESS) {
2899 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2900 "Intermediate CTIO received"
2901 " (status %x)\n", status);
2902 }
2903 return;
2904 }
2905
2906 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 2907 if (cmd == NULL)
2d70c103 2908 return;
092e1dc3 2909
2d70c103
NB		 2910 se_cmd = &cmd->se_cmd;
2911 tfo = se_cmd->se_tfo;
2912
2913 if (cmd->sg_mapped)
2914 qlt_unmap_sg(vha, cmd);
2915
2916 if (unlikely(status != CTIO_SUCCESS)) {
2917 switch (status & 0xFFFF) {
2918 case CTIO_LIP_RESET:
2919 case CTIO_TARGET_RESET:
2920 case CTIO_ABORTED:
7b898542 2921 /* driver request abort via Terminate exchange */
2d70c103
NB		 2922 case CTIO_TIMEOUT:
2923 case CTIO_INVALID_RX_ID:
2924 /* They are OK */
2925 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
2926 "qla_target(%d): CTIO with "
2927 "status %#x received, state %x, se_cmd %p, "
2928 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
2929 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
2930 status, cmd->state, se_cmd);
2931 break;
2932
2933 case CTIO_PORT_LOGGED_OUT:
2934 case CTIO_PORT_UNAVAILABLE:
2935 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
2936 "qla_target(%d): CTIO with PORT LOGGED "
2937 "OUT (29) or PORT UNAVAILABLE (28) status %x "
2938 "received (state %x, se_cmd %p)\n", vha->vp_idx,
2939 status, cmd->state, se_cmd);
2940 break;
2941
2942 case CTIO_SRR_RECEIVED:
2943 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
2944 "qla_target(%d): CTIO with SRR_RECEIVED"
2945 " status %x received (state %x, se_cmd %p)\n",
2946 vha->vp_idx, status, cmd->state, se_cmd);
2947 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
2948 break;
2949 else
2950 return;
2951
f83adb61
QT		 2952 case CTIO_DIF_ERROR: {
2953 struct ctio_crc_from_fw *crc =
2954 (struct ctio_crc_from_fw *)ctio;
2955 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
2956 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
2957 vha->vp_idx, status, cmd->state, se_cmd,
2958 *((u64 *)&crc->actual_dif[0]),
2959 *((u64 *)&crc->expected_dif[0]));
2960
2961 if (qlt_handle_dif_error(vha, cmd, ctio)) {
2962 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2963 /* scsi Write/xfer rdy complete */
2964 goto skip_term;
2965 } else {
2966 /* scsi read/xmit respond complete
2967 * call handle dif to send scsi status
2968 * rather than terminate exchange.
2969 */
2970 cmd->state = QLA_TGT_STATE_PROCESSED;
2971 ha->tgt.tgt_ops->handle_dif_err(cmd);
2972 return;
2973 }
2974 } else {
2975 /* Need to generate a SCSI good completion.
2976 * because FW did not send scsi status.
2977 */
2978 status = 0;
2979 goto skip_term;
2980 }
2981 break;
2982 }
2d70c103
NB		 2983 default:
2984 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 2985 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 2986 vha->vp_idx, status, cmd->state, se_cmd);
2987 break;
2988 }
2989
7b898542
QT		 2990
2991 /* "cmd->state == QLA_TGT_STATE_ABORTED" means
2992 * cmd is already aborted/terminated, we don't
2993 * need to terminate again. The exchange is already
2994 * cleaned up/freed at FW level. Just cleanup at driver
2995 * level.
2996 */
2997 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
2998 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 2999 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3000 return;
7b898542 3001 }
2d70c103 3002 }
f83adb61 3003skip_term:
2d70c103
NB		 3004
3005 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3006 ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
3007 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3008 int rx_status = 0;
3009
3010 cmd->state = QLA_TGT_STATE_DATA_IN;
3011
3012 if (unlikely(status != CTIO_SUCCESS))
3013 rx_status = -EIO;
3014 else
3015 cmd->write_data_transferred = 1;
3016
3017 ql_dbg(ql_dbg_tgt, vha, 0xe020,
3018 "Data received, context %x, rx_status %d\n",
3019 0x0, rx_status);
3020
3021 ha->tgt.tgt_ops->handle_data(cmd);
3022 return;
3023 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
3024 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3025 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
3026 } else {
3027 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3028 "qla_target(%d): A command in state (%d) should "
3029 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3030 }
3031
7b898542
QT		 3032 if (unlikely(status != CTIO_SUCCESS) &&
3033 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3034 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3035 dump_stack();
3036 }
3037
3038 ha->tgt.tgt_ops->free_cmd(cmd);
3039}
3040
2d70c103
NB		 3041static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3042 uint8_t task_codes)
3043{
3044 int fcp_task_attr;
3045
3046 switch (task_codes) {
3047 case ATIO_SIMPLE_QUEUE:
3048 fcp_task_attr = MSG_SIMPLE_TAG;
3049 break;
3050 case ATIO_HEAD_OF_QUEUE:
3051 fcp_task_attr = MSG_HEAD_TAG;
3052 break;
3053 case ATIO_ORDERED_QUEUE:
3054 fcp_task_attr = MSG_ORDERED_TAG;
3055 break;
3056 case ATIO_ACA_QUEUE:
3057 fcp_task_attr = MSG_ACA_TAG;
3058 break;
3059 case ATIO_UNTAGGED:
3060 fcp_task_attr = MSG_SIMPLE_TAG;
3061 break;
3062 default:
3063 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3064 "qla_target: unknown task code %x, use ORDERED instead\n",
3065 task_codes);
3066 fcp_task_attr = MSG_ORDERED_TAG;
3067 break;
3068 }
3069
3070 return fcp_task_attr;
3071}
3072
3073static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3074 uint8_t *);
3075/*
3076 * Process context for I/O path into tcm_qla2xxx code
3077 */
3078static void qlt_do_work(struct work_struct *work)
3079{
3080 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
3081 scsi_qla_host_t *vha = cmd->vha;
3082 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3083 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3084 struct qla_tgt_sess *sess = NULL;
3085 struct atio_from_isp *atio = &cmd->atio;
3086 unsigned char *cdb;
3087 unsigned long flags;
3088 uint32_t data_length;
3089 int ret, fcp_task_attr, data_dir, bidi = 0;
3090
3091 if (tgt->tgt_stop)
3092 goto out_term;
3093
3094 spin_lock_irqsave(&ha->hardware_lock, flags);
3095 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3096 atio->u.isp24.fcp_hdr.s_id);
e1013f14
RD		 3097 /* Do kref_get() before dropping qla_hw_data->hardware_lock. */
3098 if (sess)
3099 kref_get(&sess->se_sess->sess_kref);
2d70c103
NB		 3100 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3101
3102 if (unlikely(!sess)) {
3103 uint8_t *s_id = atio->u.isp24.fcp_hdr.s_id;
3104
3105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
3106 "qla_target(%d): Unable to find wwn login"
3107 " (s_id %x:%x:%x), trying to create it manually\n",
3108 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
3109
3110 if (atio->u.raw.entry_count > 1) {
3111 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
3112 "Dropping multy entry cmd %p\n", cmd);
3113 goto out_term;
3114 }
3115
0e8cd71c 3116 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 3117 sess = qlt_make_local_sess(vha, s_id);
3118 /* sess has an extra creation ref. */
0e8cd71c 3119 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 3120
3121 if (!sess)
3122 goto out_term;
3123 }
3124
3125 cmd->sess = sess;
3126 cmd->loop_id = sess->loop_id;
3127 cmd->conf_compl_supported = sess->conf_compl_supported;
3128
3129 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
3130 cmd->tag = atio->u.isp24.exchange_addr;
3131 cmd->unpacked_lun = scsilun_to_int(
3132 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3133
3134 if (atio->u.isp24.fcp_cmnd.rddata &&
3135 atio->u.isp24.fcp_cmnd.wrdata) {
3136 bidi = 1;
3137 data_dir = DMA_TO_DEVICE;
3138 } else if (atio->u.isp24.fcp_cmnd.rddata)
3139 data_dir = DMA_FROM_DEVICE;
3140 else if (atio->u.isp24.fcp_cmnd.wrdata)
3141 data_dir = DMA_TO_DEVICE;
3142 else
3143 data_dir = DMA_NONE;
3144
3145 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3146 atio->u.isp24.fcp_cmnd.task_attr);
3147 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3148 &atio->u.isp24.fcp_cmnd.add_cdb[
3149 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3150
3151 ql_dbg(ql_dbg_tgt, vha, 0xe022,
f83adb61
QT		 3152 "qla_target: START qla cmd: %p se_cmd %p lun: 0x%04x (tag %d) len(%d) ox_id %x\n",
3153 cmd, &cmd->se_cmd, cmd->unpacked_lun, cmd->tag, data_length,
3154 cmd->atio.u.isp24.fcp_hdr.ox_id);
2d70c103
NB		 3155
3156 ret = vha->hw->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3157 fcp_task_attr, data_dir, bidi);
3158 if (ret != 0)
3159 goto out_term;
3160 /*
3161 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3162 */
08234e3a 3163 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 3164 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 3165 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 3166 return;
3167
3168out_term:
3169 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
3170 /*
fae9eaf8
RD		 3171 * cmd has not sent to target yet, so pass NULL as the second
3172 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103
NB		 3173 */
3174 spin_lock_irqsave(&ha->hardware_lock, flags);
3175 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
fae9eaf8 3176 kmem_cache_free(qla_tgt_cmd_cachep, cmd);
2d70c103
NB		 3177 if (sess)
3178 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 3179 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 3180}
3181
3182/* ha->hardware_lock supposed to be held on entry */
3183static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3184 struct atio_from_isp *atio)
3185{
0e8cd71c 3186 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3187 struct qla_tgt_cmd *cmd;
3188
3189 if (unlikely(tgt->tgt_stop)) {
3190 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
3191 "New command while device %p is shutting down\n", tgt);
3192 return -EFAULT;
3193 }
3194
3195 cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC);
3196 if (!cmd) {
3197 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
3198 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
3199 return -ENOMEM;
3200 }
3201
2d70c103
NB		 3202 memcpy(&cmd->atio, atio, sizeof(*atio));
3203 cmd->state = QLA_TGT_STATE_NEW;
0e8cd71c 3204 cmd->tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3205 cmd->vha = vha;
3206
3207 INIT_WORK(&cmd->work, qlt_do_work);
3208 queue_work(qla_tgt_wq, &cmd->work);
3209 return 0;
3210
3211}
3212
3213/* ha->hardware_lock supposed to be held on entry */
3214static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
3215 int fn, void *iocb, int flags)
3216{
3217 struct scsi_qla_host *vha = sess->vha;
3218 struct qla_hw_data *ha = vha->hw;
3219 struct qla_tgt_mgmt_cmd *mcmd;
3220 int res;
3221 uint8_t tmr_func;
3222
3223 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3224 if (!mcmd) {
3225 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
3226 "qla_target(%d): Allocation of management "
3227 "command failed, some commands and their data could "
3228 "leak\n", vha->vp_idx);
3229 return -ENOMEM;
3230 }
3231 memset(mcmd, 0, sizeof(*mcmd));
3232 mcmd->sess = sess;
3233
3234 if (iocb) {
3235 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3236 sizeof(mcmd->orig_iocb.imm_ntfy));
3237 }
3238 mcmd->tmr_func = fn;
3239 mcmd->flags = flags;
3240
3241 switch (fn) {
3242 case QLA_TGT_CLEAR_ACA:
3243 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
3244 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
3245 tmr_func = TMR_CLEAR_ACA;
3246 break;
3247
3248 case QLA_TGT_TARGET_RESET:
3249 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
3250 "qla_target(%d): TARGET_RESET received\n",
3251 sess->vha->vp_idx);
3252 tmr_func = TMR_TARGET_WARM_RESET;
3253 break;
3254
3255 case QLA_TGT_LUN_RESET:
3256 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
3257 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
3258 tmr_func = TMR_LUN_RESET;
3259 break;
3260
3261 case QLA_TGT_CLEAR_TS:
3262 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
3263 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
3264 tmr_func = TMR_CLEAR_TASK_SET;
3265 break;
3266
3267 case QLA_TGT_ABORT_TS:
3268 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
3269 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
3270 tmr_func = TMR_ABORT_TASK_SET;
3271 break;
3272#if 0
3273 case QLA_TGT_ABORT_ALL:
3274 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
3275 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
3276 sess->vha->vp_idx);
3277 tmr_func = 0;
3278 break;
3279
3280 case QLA_TGT_ABORT_ALL_SESS:
3281 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
3282 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
3283 sess->vha->vp_idx);
3284 tmr_func = 0;
3285 break;
3286
3287 case QLA_TGT_NEXUS_LOSS_SESS:
3288 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
3289 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
3290 sess->vha->vp_idx);
3291 tmr_func = 0;
3292 break;
3293
3294 case QLA_TGT_NEXUS_LOSS:
3295 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
3296 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
3297 tmr_func = 0;
3298 break;
3299#endif
3300 default:
3301 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
3302 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
3303 sess->vha->vp_idx, fn);
3304 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3305 return -ENOSYS;
3306 }
3307
3308 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
3309 if (res != 0) {
3310 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
3311 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
3312 sess->vha->vp_idx, res);
3313 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3314 return -EFAULT;
3315 }
3316
3317 return 0;
3318}
3319
3320/* ha->hardware_lock supposed to be held on entry */
3321static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
3322{
3323 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3324 struct qla_hw_data *ha = vha->hw;
3325 struct qla_tgt *tgt;
3326 struct qla_tgt_sess *sess;
3327 uint32_t lun, unpacked_lun;
3328 int lun_size, fn;
3329
0e8cd71c 3330 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3331
3332 lun = a->u.isp24.fcp_cmnd.lun;
3333 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
3334 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
3335 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3336 a->u.isp24.fcp_hdr.s_id);
3337 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3338
3339 if (!sess) {
3340 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
3341 "qla_target(%d): task mgmt fn 0x%x for "
3342 "non-existant session\n", vha->vp_idx, fn);
3343 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
3344 sizeof(struct atio_from_isp));
3345 }
3346
3347 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
3348}
3349
3350/* ha->hardware_lock supposed to be held on entry */
3351static int __qlt_abort_task(struct scsi_qla_host *vha,
3352 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
3353{
3354 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3355 struct qla_hw_data *ha = vha->hw;
3356 struct qla_tgt_mgmt_cmd *mcmd;
3357 uint32_t lun, unpacked_lun;
3358 int rc;
3359
3360 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3361 if (mcmd == NULL) {
3362 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
3363 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
3364 vha->vp_idx, __func__);
3365 return -ENOMEM;
3366 }
3367 memset(mcmd, 0, sizeof(*mcmd));
3368
3369 mcmd->sess = sess;
3370 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3371 sizeof(mcmd->orig_iocb.imm_ntfy));
3372
3373 lun = a->u.isp24.fcp_cmnd.lun;
3374 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3375
3376 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
3377 le16_to_cpu(iocb->u.isp2x.seq_id));
3378 if (rc != 0) {
3379 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
3380 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
3381 vha->vp_idx, rc);
3382 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3383 return -EFAULT;
3384 }
3385
3386 return 0;
3387}
3388
3389/* ha->hardware_lock supposed to be held on entry */
3390static int qlt_abort_task(struct scsi_qla_host *vha,
3391 struct imm_ntfy_from_isp *iocb)
3392{
3393 struct qla_hw_data *ha = vha->hw;
3394 struct qla_tgt_sess *sess;
3395 int loop_id;
3396
3397 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
3398
3399 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
3400 if (sess == NULL) {
3401 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
3402 "qla_target(%d): task abort for unexisting "
3403 "session\n", vha->vp_idx);
0e8cd71c 3404 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 3405 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
3406 }
3407
3408 return __qlt_abort_task(vha, iocb, sess);
3409}
3410
3411/*
3412 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3413 */
3414static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
3415 struct imm_ntfy_from_isp *iocb)
3416{
2d70c103
NB		 3417 int res = 0;
3418
3419 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
7b833558
OK		 3420 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
3421 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2d70c103
NB		 3422
3423 switch (iocb->u.isp24.status_subcode) {
3424 case ELS_PLOGI:
3425 case ELS_FLOGI:
3426 case ELS_PRLI:
3427 case ELS_LOGO:
3428 case ELS_PRLO:
3429 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3430 break;
3431 case ELS_PDISC:
3432 case ELS_ADISC:
3433 {
0e8cd71c 3434 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3435 if (tgt->link_reinit_iocb_pending) {
3436 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3437 0, 0, 0, 0, 0, 0);
3438 tgt->link_reinit_iocb_pending = 0;
3439 }
3440 res = 1; /* send notify ack */
3441 break;
3442 }
3443
3444 default:
3445 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
3446 "qla_target(%d): Unsupported ELS command %x "
3447 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
3448 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3449 break;
3450 }
3451
3452 return res;
3453}
3454
3455static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
3456{
3457 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
3458 size_t first_offset = 0, rem_offset = offset, tmp = 0;
3459 int i, sg_srr_cnt, bufflen = 0;
3460
3461 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
3462 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
3463 "cmd->sg_cnt: %u, direction: %d\n",
3464 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
3465
3466 /*
3467 * FIXME: Reject non zero SRR relative offset until we can test
3468 * this code properly.
3469 */
3470 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
3471 return -1;
3472
3473 if (!cmd->sg || !cmd->sg_cnt) {
3474 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
3475 "Missing cmd->sg or zero cmd->sg_cnt in"
3476 " qla_tgt_set_data_offset\n");
3477 return -EINVAL;
3478 }
3479 /*
3480 * Walk the current cmd->sg list until we locate the new sg_srr_start
3481 */
3482 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
3483 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
3484 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
3485 i, sg, sg_page(sg), sg->length, sg->offset);
3486
3487 if ((sg->length + tmp) > offset) {
3488 first_offset = rem_offset;
3489 sg_srr_start = sg;
3490 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
3491 "Found matching sg[%d], using %p as sg_srr_start, "
3492 "and using first_offset: %zu\n", i, sg,
3493 first_offset);
3494 break;
3495 }
3496 tmp += sg->length;
3497 rem_offset -= sg->length;
3498 }
3499
3500 if (!sg_srr_start) {
3501 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
3502 "Unable to locate sg_srr_start for offset: %u\n", offset);
3503 return -EINVAL;
3504 }
3505 sg_srr_cnt = (cmd->sg_cnt - i);
3506
3507 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
3508 if (!sg_srr) {
3509 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
3510 "Unable to allocate sgp\n");
3511 return -ENOMEM;
3512 }
3513 sg_init_table(sg_srr, sg_srr_cnt);
3514 sgp = &sg_srr[0];
3515 /*
3516 * Walk the remaining list for sg_srr_start, mapping to the newly
3517 * allocated sg_srr taking first_offset into account.
3518 */
3519 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
3520 if (first_offset) {
3521 sg_set_page(sgp, sg_page(sg),
3522 (sg->length - first_offset), first_offset);
3523 first_offset = 0;
3524 } else {
3525 sg_set_page(sgp, sg_page(sg), sg->length, 0);
3526 }
3527 bufflen += sgp->length;
3528
3529 sgp = sg_next(sgp);
3530 if (!sgp)
3531 break;
3532 }
3533
3534 cmd->sg = sg_srr;
3535 cmd->sg_cnt = sg_srr_cnt;
3536 cmd->bufflen = bufflen;
3537 cmd->offset += offset;
3538 cmd->free_sg = 1;
3539
3540 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
3541 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
3542 cmd->sg_cnt);
3543 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
3544 cmd->bufflen);
3545 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
3546 cmd->offset);
3547
3548 if (cmd->sg_cnt < 0)
3549 BUG();
3550
3551 if (cmd->bufflen < 0)
3552 BUG();
3553
3554 return 0;
3555}
3556
3557static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
3558 uint32_t srr_rel_offs, int *xmit_type)
3559{
3560 int res = 0, rel_offs;
3561
3562 rel_offs = srr_rel_offs - cmd->offset;
3563 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
3564 srr_rel_offs, rel_offs);
3565
3566 *xmit_type = QLA_TGT_XMIT_ALL;
3567
3568 if (rel_offs < 0) {
3569 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
3570 "qla_target(%d): SRR rel_offs (%d) < 0",
3571 cmd->vha->vp_idx, rel_offs);
3572 res = -1;
3573 } else if (rel_offs == cmd->bufflen)
3574 *xmit_type = QLA_TGT_XMIT_STATUS;
3575 else if (rel_offs > 0)
3576 res = qlt_set_data_offset(cmd, rel_offs);
3577
3578 return res;
3579}
3580
3581/* No locks, thread context */
3582static void qlt_handle_srr(struct scsi_qla_host *vha,
3583 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
3584{
3585 struct imm_ntfy_from_isp *ntfy =
3586 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
3587 struct qla_hw_data *ha = vha->hw;
3588 struct qla_tgt_cmd *cmd = sctio->cmd;
3589 struct se_cmd *se_cmd = &cmd->se_cmd;
3590 unsigned long flags;
3591 int xmit_type = 0, resp = 0;
3592 uint32_t offset;
3593 uint16_t srr_ui;
3594
3595 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
3596 srr_ui = ntfy->u.isp24.srr_ui;
3597
3598 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3599 cmd, srr_ui);
3600
3601 switch (srr_ui) {
3602 case SRR_IU_STATUS:
3603 spin_lock_irqsave(&ha->hardware_lock, flags);
3604 qlt_send_notify_ack(vha, ntfy,
3605 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3606 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3607 xmit_type = QLA_TGT_XMIT_STATUS;
3608 resp = 1;
3609 break;
3610 case SRR_IU_DATA_IN:
3611 if (!cmd->sg || !cmd->sg_cnt) {
3612 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3613 "Unable to process SRR_IU_DATA_IN due to"
3614 " missing cmd->sg, state: %d\n", cmd->state);
3615 dump_stack();
3616 goto out_reject;
3617 }
3618 if (se_cmd->scsi_status != 0) {
3619 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3620 "Rejecting SRR_IU_DATA_IN with non GOOD "
3621 "scsi_status\n");
3622 goto out_reject;
3623 }
3624 cmd->bufflen = se_cmd->data_length;
3625
3626 if (qlt_has_data(cmd)) {
3627 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3628 goto out_reject;
3629 spin_lock_irqsave(&ha->hardware_lock, flags);
3630 qlt_send_notify_ack(vha, ntfy,
3631 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3632 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3633 resp = 1;
3634 } else {
3635 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3636 "qla_target(%d): SRR for in data for cmd "
3637 "without them (tag %d, SCSI status %d), "
3638 "reject", vha->vp_idx, cmd->tag,
3639 cmd->se_cmd.scsi_status);
3640 goto out_reject;
3641 }
3642 break;
3643 case SRR_IU_DATA_OUT:
3644 if (!cmd->sg || !cmd->sg_cnt) {
3645 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3646 "Unable to process SRR_IU_DATA_OUT due to"
3647 " missing cmd->sg\n");
3648 dump_stack();
3649 goto out_reject;
3650 }
3651 if (se_cmd->scsi_status != 0) {
3652 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3653 "Rejecting SRR_IU_DATA_OUT"
3654 " with non GOOD scsi_status\n");
3655 goto out_reject;
3656 }
3657 cmd->bufflen = se_cmd->data_length;
3658
3659 if (qlt_has_data(cmd)) {
3660 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3661 goto out_reject;
3662 spin_lock_irqsave(&ha->hardware_lock, flags);
3663 qlt_send_notify_ack(vha, ntfy,
3664 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3665 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3666 if (xmit_type & QLA_TGT_XMIT_DATA)
3667 qlt_rdy_to_xfer(cmd);
3668 } else {
3669 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3670 "qla_target(%d): SRR for out data for cmd "
3671 "without them (tag %d, SCSI status %d), "
3672 "reject", vha->vp_idx, cmd->tag,
3673 cmd->se_cmd.scsi_status);
3674 goto out_reject;
3675 }
3676 break;
3677 default:
3678 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3679 "qla_target(%d): Unknown srr_ui value %x",
3680 vha->vp_idx, srr_ui);
3681 goto out_reject;
3682 }
3683
3684 /* Transmit response in case of status and data-in cases */
3685 if (resp)
3686 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3687
3688 return;
3689
3690out_reject:
3691 spin_lock_irqsave(&ha->hardware_lock, flags);
3692 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3693 NOTIFY_ACK_SRR_FLAGS_REJECT,
3694 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3695 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3696 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3697 cmd->state = QLA_TGT_STATE_DATA_IN;
3698 dump_stack();
3699 } else
3700 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3701 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3702}
3703
3704static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3705 struct qla_tgt_srr_imm *imm, int ha_locked)
3706{
3707 struct qla_hw_data *ha = vha->hw;
3708 unsigned long flags = 0;
3709
3710 if (!ha_locked)
3711 spin_lock_irqsave(&ha->hardware_lock, flags);
3712
3713 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3714 NOTIFY_ACK_SRR_FLAGS_REJECT,
3715 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3716 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3717
3718 if (!ha_locked)
3719 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3720
3721 kfree(imm);
3722}
3723
3724static void qlt_handle_srr_work(struct work_struct *work)
3725{
3726 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3727 struct scsi_qla_host *vha = tgt->vha;
3728 struct qla_tgt_srr_ctio *sctio;
3729 unsigned long flags;
3730
3731 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3732 tgt);
3733
3734restart:
3735 spin_lock_irqsave(&tgt->srr_lock, flags);
3736 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3737 struct qla_tgt_srr_imm *imm, *i, *ti;
3738 struct qla_tgt_cmd *cmd;
3739 struct se_cmd *se_cmd;
3740
3741 imm = NULL;
3742 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3743 srr_list_entry) {
3744 if (i->srr_id == sctio->srr_id) {
3745 list_del(&i->srr_list_entry);
3746 if (imm) {
3747 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3748 "qla_target(%d): There must be "
3749 "only one IMM SRR per CTIO SRR "
3750 "(IMM SRR %p, id %d, CTIO %p\n",
3751 vha->vp_idx, i, i->srr_id, sctio);
3752 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3753 } else
3754 imm = i;
3755 }
3756 }
3757
3758 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3759 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3760 sctio->srr_id);
3761
3762 if (imm == NULL) {
3763 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3764 "Not found matching IMM for SRR CTIO (id %d)\n",
3765 sctio->srr_id);
3766 continue;
3767 } else
3768 list_del(&sctio->srr_list_entry);
3769
3770 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3771
3772 cmd = sctio->cmd;
3773 /*
3774 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3775 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3776 * logic..
3777 */
3778 cmd->offset = 0;
3779 if (cmd->free_sg) {
3780 kfree(cmd->sg);
3781 cmd->sg = NULL;
3782 cmd->free_sg = 0;
3783 }
3784 se_cmd = &cmd->se_cmd;
3785
3786 cmd->sg_cnt = se_cmd->t_data_nents;
3787 cmd->sg = se_cmd->t_data_sg;
3788
3789 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3790 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3791 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
6f58c780
DGW		 3792 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
3793 cmd->sg_cnt, cmd->offset);
2d70c103
NB		 3794
3795 qlt_handle_srr(vha, sctio, imm);
3796
3797 kfree(imm);
3798 kfree(sctio);
3799 goto restart;
3800 }
3801 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3802}
3803
3804/* ha->hardware_lock supposed to be held on entry */
3805static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3806 struct imm_ntfy_from_isp *iocb)
3807{
3808 struct qla_tgt_srr_imm *imm;
0e8cd71c 3809 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3810 struct qla_tgt_srr_ctio *sctio;
3811
3812 tgt->imm_srr_id++;
3813
3814 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
3815 vha->vp_idx);
3816
3817 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
3818 if (imm != NULL) {
3819 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
3820
3821 /* IRQ is already OFF */
3822 spin_lock(&tgt->srr_lock);
3823 imm->srr_id = tgt->imm_srr_id;
3824 list_add_tail(&imm->srr_list_entry,
3825 &tgt->srr_imm_list);
3826 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
3827 "IMM NTFY SRR %p added (id %d, ui %x)\n",
3828 imm, imm->srr_id, iocb->u.isp24.srr_ui);
3829 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3830 int found = 0;
3831 list_for_each_entry(sctio, &tgt->srr_ctio_list,
3832 srr_list_entry) {
3833 if (sctio->srr_id == imm->srr_id) {
3834 found = 1;
3835 break;
3836 }
3837 }
3838 if (found) {
3839 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
3840 "Scheduling srr work\n");
3841 schedule_work(&tgt->srr_work);
3842 } else {
3843 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
3844 "qla_target(%d): imm_srr_id "
3845 "== ctio_srr_id (%d), but there is no "
3846 "corresponding SRR CTIO, deleting IMM "
3847 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
3848 imm);
3849 list_del(&imm->srr_list_entry);
3850
3851 kfree(imm);
3852
3853 spin_unlock(&tgt->srr_lock);
3854 goto out_reject;
3855 }
3856 }
3857 spin_unlock(&tgt->srr_lock);
3858 } else {
3859 struct qla_tgt_srr_ctio *ts;
3860
3861 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
3862 "qla_target(%d): Unable to allocate SRR IMM "
3863 "entry, SRR request will be rejected\n", vha->vp_idx);
3864
3865 /* IRQ is already OFF */
3866 spin_lock(&tgt->srr_lock);
3867 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
3868 srr_list_entry) {
3869 if (sctio->srr_id == tgt->imm_srr_id) {
3870 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
3871 "CTIO SRR %p deleted (id %d)\n",
3872 sctio, sctio->srr_id);
3873 list_del(&sctio->srr_list_entry);
3874 qlt_send_term_exchange(vha, sctio->cmd,
3875 &sctio->cmd->atio, 1);
3876 kfree(sctio);
3877 }
3878 }
3879 spin_unlock(&tgt->srr_lock);
3880 goto out_reject;
3881 }
3882
3883 return;
3884
3885out_reject:
3886 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
3887 NOTIFY_ACK_SRR_FLAGS_REJECT,
3888 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3889 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3890}
3891
3892/*
3893 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3894 */
3895static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
3896 struct imm_ntfy_from_isp *iocb)
3897{
3898 struct qla_hw_data *ha = vha->hw;
3899 uint32_t add_flags = 0;
3900 int send_notify_ack = 1;
3901 uint16_t status;
3902
3903 status = le16_to_cpu(iocb->u.isp2x.status);
3904 switch (status) {
3905 case IMM_NTFY_LIP_RESET:
3906 {
3907 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
3908 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
3909 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
3910 iocb->u.isp24.status_subcode);
3911
3912 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3913 send_notify_ack = 0;
3914 break;
3915 }
3916
3917 case IMM_NTFY_LIP_LINK_REINIT:
3918 {
0e8cd71c 3919 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3920 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
3921 "qla_target(%d): LINK REINIT (loop %#x, "
3922 "subcode %x)\n", vha->vp_idx,
3923 le16_to_cpu(iocb->u.isp24.nport_handle),
3924 iocb->u.isp24.status_subcode);
3925 if (tgt->link_reinit_iocb_pending) {
3926 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3927 0, 0, 0, 0, 0, 0);
3928 }
3929 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
3930 tgt->link_reinit_iocb_pending = 1;
3931 /*
3932 * QLogic requires to wait after LINK REINIT for possible
3933 * PDISC or ADISC ELS commands
3934 */
3935 send_notify_ack = 0;
3936 break;
3937 }
3938
3939 case IMM_NTFY_PORT_LOGOUT:
3940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
3941 "qla_target(%d): Port logout (loop "
3942 "%#x, subcode %x)\n", vha->vp_idx,
3943 le16_to_cpu(iocb->u.isp24.nport_handle),
3944 iocb->u.isp24.status_subcode);
3945
3946 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
3947 send_notify_ack = 0;
3948 /* The sessions will be cleared in the callback, if needed */
3949 break;
3950
3951 case IMM_NTFY_GLBL_TPRLO:
3952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
3953 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
3954 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3955 send_notify_ack = 0;
3956 /* The sessions will be cleared in the callback, if needed */
3957 break;
3958
3959 case IMM_NTFY_PORT_CONFIG:
3960 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
3961 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
3962 status);
3963 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3964 send_notify_ack = 0;
3965 /* The sessions will be cleared in the callback, if needed */
3966 break;
3967
3968 case IMM_NTFY_GLBL_LOGO:
3969 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
3970 "qla_target(%d): Link failure detected\n",
3971 vha->vp_idx);
3972 /* I_T nexus loss */
3973 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
3974 send_notify_ack = 0;
3975 break;
3976
3977 case IMM_NTFY_IOCB_OVERFLOW:
3978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
3979 "qla_target(%d): Cannot provide requested "
3980 "capability (IOCB overflowed the immediate notify "
3981 "resource count)\n", vha->vp_idx);
3982 break;
3983
3984 case IMM_NTFY_ABORT_TASK:
3985 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
3986 "qla_target(%d): Abort Task (S %08x I %#x -> "
3987 "L %#x)\n", vha->vp_idx,
3988 le16_to_cpu(iocb->u.isp2x.seq_id),
3989 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
3990 le16_to_cpu(iocb->u.isp2x.lun));
3991 if (qlt_abort_task(vha, iocb) == 0)
3992 send_notify_ack = 0;
3993 break;
3994
3995 case IMM_NTFY_RESOURCE:
3996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
3997 "qla_target(%d): Out of resources, host %ld\n",
3998 vha->vp_idx, vha->host_no);
3999 break;
4000
4001 case IMM_NTFY_MSG_RX:
4002 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4003 "qla_target(%d): Immediate notify task %x\n",
4004 vha->vp_idx, iocb->u.isp2x.task_flags);
4005 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4006 send_notify_ack = 0;
4007 break;
4008
4009 case IMM_NTFY_ELS:
4010 if (qlt_24xx_handle_els(vha, iocb) == 0)
4011 send_notify_ack = 0;
4012 break;
4013
4014 case IMM_NTFY_SRR:
4015 qlt_prepare_srr_imm(vha, iocb);
4016 send_notify_ack = 0;
4017 break;
4018
4019 default:
4020 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4021 "qla_target(%d): Received unknown immediate "
4022 "notify status %x\n", vha->vp_idx, status);
4023 break;
4024 }
4025
4026 if (send_notify_ack)
4027 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4028}
4029
4030/*
4031 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4032 * This function sends busy to ISP 2xxx or 24xx.
4033 */
4034static void qlt_send_busy(struct scsi_qla_host *vha,
4035 struct atio_from_isp *atio, uint16_t status)
4036{
4037 struct ctio7_to_24xx *ctio24;
4038 struct qla_hw_data *ha = vha->hw;
4039 request_t *pkt;
4040 struct qla_tgt_sess *sess = NULL;
4041
4042 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4043 atio->u.isp24.fcp_hdr.s_id);
4044 if (!sess) {
4045 qlt_send_term_exchange(vha, NULL, atio, 1);
4046 return;
4047 }
4048 /* Sending marker isn't necessary, since we called from ISR */
4049
4050 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4051 if (!pkt) {
4052 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
4053 "qla_target(%d): %s failed: unable to allocate "
4054 "request packet", vha->vp_idx, __func__);
4055 return;
4056 }
4057
4058 pkt->entry_count = 1;
4059 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
4060
4061 ctio24 = (struct ctio7_to_24xx *)pkt;
4062 ctio24->entry_type = CTIO_TYPE7;
4063 ctio24->nport_handle = sess->loop_id;
4064 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
4065 ctio24->vp_index = vha->vp_idx;
4066 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
4067 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
4068 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
4069 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
4070 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
4071 __constant_cpu_to_le16(
4072 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
4073 CTIO7_FLAGS_DONT_RET_CTIO);
4074 /*
4075 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
4076 * if the explicit conformation is used.
4077 */
4078 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
4079 ctio24->u.status1.scsi_status = cpu_to_le16(status);
4080 ctio24->u.status1.residual = get_unaligned((uint32_t *)
4081 &atio->u.isp24.fcp_cmnd.add_cdb[
4082 atio->u.isp24.fcp_cmnd.add_cdb_len]);
4083 if (ctio24->u.status1.residual != 0)
4084 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
4085
4086 qla2x00_start_iocbs(vha, vha->req);
4087}
4088
4089/* ha->hardware_lock supposed to be held on entry */
4090/* called via callback from qla2xxx */
4091static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
4092 struct atio_from_isp *atio)
4093{
4094 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4095 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4096 int rc;
4097
4098 if (unlikely(tgt == NULL)) {
4099 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
4100 "ATIO pkt, but no tgt (ha %p)", ha);
4101 return;
4102 }
4103 ql_dbg(ql_dbg_tgt, vha, 0xe02c,
4104 "qla_target(%d): ATIO pkt %p: type %02x count %02x",
4105 vha->vp_idx, atio, atio->u.raw.entry_type,
4106 atio->u.raw.entry_count);
4107 /*
4108 * In tgt_stop mode we also should allow all requests to pass.
4109 * Otherwise, some commands can stuck.
4110 */
4111
4112 tgt->irq_cmd_count++;
4113
4114 switch (atio->u.raw.entry_type) {
4115 case ATIO_TYPE7:
4116 ql_dbg(ql_dbg_tgt, vha, 0xe02d,
f83adb61 4117 "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		 4118 vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
4119 atio->u.isp24.fcp_cmnd.rddata,
4120 atio->u.isp24.fcp_cmnd.wrdata,
f83adb61 4121 atio->u.isp24.fcp_cmnd.cdb[0],
2d70c103
NB		 4122 atio->u.isp24.fcp_cmnd.add_cdb_len,
4123 be32_to_cpu(get_unaligned((uint32_t *)
4124 &atio->u.isp24.fcp_cmnd.add_cdb[
4125 atio->u.isp24.fcp_cmnd.add_cdb_len])),
4126 atio->u.isp24.fcp_hdr.s_id[0],
4127 atio->u.isp24.fcp_hdr.s_id[1],
4128 atio->u.isp24.fcp_hdr.s_id[2]);
4129
4130 if (unlikely(atio->u.isp24.exchange_addr ==
4131 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
4132 ql_dbg(ql_dbg_tgt, vha, 0xe058,
4133 "qla_target(%d): ATIO_TYPE7 "
4134 "received with UNKNOWN exchange address, "
4135 "sending QUEUE_FULL\n", vha->vp_idx);
4136 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
4137 break;
4138 }
4139 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
4140 rc = qlt_handle_cmd_for_atio(vha, atio);
4141 else
4142 rc = qlt_handle_task_mgmt(vha, atio);
4143 if (unlikely(rc != 0)) {
4144 if (rc == -ESRCH) {
4145#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4146 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4147#else
4148 qlt_send_term_exchange(vha, NULL, atio, 1);
4149#endif
4150 } else {
4151 if (tgt->tgt_stop) {
4152 ql_dbg(ql_dbg_tgt, vha, 0xe059,
4153 "qla_target: Unable to send "
4154 "command to target for req, "
4155 "ignoring.\n");
4156 } else {
4157 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
4158 "qla_target(%d): Unable to send "
4159 "command to target, sending BUSY "
4160 "status.\n", vha->vp_idx);
4161 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4162 }
4163 }
4164 }
4165 break;
4166
4167 case IMMED_NOTIFY_TYPE:
4168 {
4169 if (unlikely(atio->u.isp2x.entry_status != 0)) {
4170 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
4171 "qla_target(%d): Received ATIO packet %x "
4172 "with error status %x\n", vha->vp_idx,
4173 atio->u.raw.entry_type,
4174 atio->u.isp2x.entry_status);
4175 break;
4176 }
4177 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
4178 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
4179 break;
4180 }
4181
4182 default:
4183 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
4184 "qla_target(%d): Received unknown ATIO atio "
4185 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
4186 break;
4187 }
4188
4189 tgt->irq_cmd_count--;
4190}
4191
4192/* ha->hardware_lock supposed to be held on entry */
4193/* called via callback from qla2xxx */
4194static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
4195{
4196 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4197 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4198
4199 if (unlikely(tgt == NULL)) {
4200 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
4201 "qla_target(%d): Response pkt %x received, but no "
4202 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
4203 return;
4204 }
4205
4206 ql_dbg(ql_dbg_tgt, vha, 0xe02f,
4207 "qla_target(%d): response pkt %p: T %02x C %02x S %02x "
4208 "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
4209 pkt->entry_count, pkt->entry_status, pkt->handle);
4210
4211 /*
4212 * In tgt_stop mode we also should allow all requests to pass.
4213 * Otherwise, some commands can stuck.
4214 */
4215
4216 tgt->irq_cmd_count++;
4217
4218 switch (pkt->entry_type) {
f83adb61 4219 case CTIO_CRC2:
2d70c103
NB		 4220 case CTIO_TYPE7:
4221 {
4222 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
f83adb61
QT		 4223 ql_dbg(ql_dbg_tgt, vha, 0xe030,
4224 "CTIO[0x%x] 12/CTIO7 7A/CRC2: instance %d\n",
4225 entry->entry_type, vha->vp_idx);
2d70c103
NB		 4226 qlt_do_ctio_completion(vha, entry->handle,
4227 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4228 entry);
4229 break;
4230 }
4231
4232 case ACCEPT_TGT_IO_TYPE:
4233 {
4234 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
4235 int rc;
4236 ql_dbg(ql_dbg_tgt, vha, 0xe031,
4237 "ACCEPT_TGT_IO instance %d status %04x "
4238 "lun %04x read/write %d data_length %04x "
4239 "target_id %02x rx_id %04x\n ", vha->vp_idx,
4240 le16_to_cpu(atio->u.isp2x.status),
4241 le16_to_cpu(atio->u.isp2x.lun),
4242 atio->u.isp2x.execution_codes,
4243 le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
4244 atio), atio->u.isp2x.rx_id);
4245 if (atio->u.isp2x.status !=
4246 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
4247 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
4248 "qla_target(%d): ATIO with error "
4249 "status %x received\n", vha->vp_idx,
4250 le16_to_cpu(atio->u.isp2x.status));
4251 break;
4252 }
4253 ql_dbg(ql_dbg_tgt, vha, 0xe032,
4254 "FCP CDB: 0x%02x, sizeof(cdb): %lu",
4255 atio->u.isp2x.cdb[0], (unsigned long
4256 int)sizeof(atio->u.isp2x.cdb));
4257
4258 rc = qlt_handle_cmd_for_atio(vha, atio);
4259 if (unlikely(rc != 0)) {
4260 if (rc == -ESRCH) {
4261#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4262 qlt_send_busy(vha, atio, 0);
4263#else
4264 qlt_send_term_exchange(vha, NULL, atio, 1);
4265#endif
4266 } else {
4267 if (tgt->tgt_stop) {
4268 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
4269 "qla_target: Unable to send "
4270 "command to target, sending TERM "
4271 "EXCHANGE for rsp\n");
4272 qlt_send_term_exchange(vha, NULL,
4273 atio, 1);
4274 } else {
4275 ql_dbg(ql_dbg_tgt, vha, 0xe060,
4276 "qla_target(%d): Unable to send "
4277 "command to target, sending BUSY "
4278 "status\n", vha->vp_idx);
4279 qlt_send_busy(vha, atio, 0);
4280 }
4281 }
4282 }
4283 }
4284 break;
4285
4286 case CONTINUE_TGT_IO_TYPE:
4287 {
4288 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4289 ql_dbg(ql_dbg_tgt, vha, 0xe033,
4290 "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
4291 qlt_do_ctio_completion(vha, entry->handle,
4292 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4293 entry);
4294 break;
4295 }
4296
4297 case CTIO_A64_TYPE:
4298 {
4299 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4300 ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
4301 vha->vp_idx);
4302 qlt_do_ctio_completion(vha, entry->handle,
4303 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4304 entry);
4305 break;
4306 }
4307
4308 case IMMED_NOTIFY_TYPE:
4309 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
4310 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
4311 break;
4312
4313 case NOTIFY_ACK_TYPE:
4314 if (tgt->notify_ack_expected > 0) {
4315 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
4316 ql_dbg(ql_dbg_tgt, vha, 0xe036,
4317 "NOTIFY_ACK seq %08x status %x\n",
4318 le16_to_cpu(entry->u.isp2x.seq_id),
4319 le16_to_cpu(entry->u.isp2x.status));
4320 tgt->notify_ack_expected--;
4321 if (entry->u.isp2x.status !=
4322 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
4323 ql_dbg(ql_dbg_tgt, vha, 0xe061,
4324 "qla_target(%d): NOTIFY_ACK "
4325 "failed %x\n", vha->vp_idx,
4326 le16_to_cpu(entry->u.isp2x.status));
4327 }
4328 } else {
4329 ql_dbg(ql_dbg_tgt, vha, 0xe062,
4330 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
4331 vha->vp_idx);
4332 }
4333 break;
4334
4335 case ABTS_RECV_24XX:
4336 ql_dbg(ql_dbg_tgt, vha, 0xe037,
4337 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
4338 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
4339 break;
4340
4341 case ABTS_RESP_24XX:
4342 if (tgt->abts_resp_expected > 0) {
4343 struct abts_resp_from_24xx_fw *entry =
4344 (struct abts_resp_from_24xx_fw *)pkt;
4345 ql_dbg(ql_dbg_tgt, vha, 0xe038,
4346 "ABTS_RESP_24XX: compl_status %x\n",
4347 entry->compl_status);
4348 tgt->abts_resp_expected--;
4349 if (le16_to_cpu(entry->compl_status) !=
4350 ABTS_RESP_COMPL_SUCCESS) {
4351 if ((entry->error_subcode1 == 0x1E) &&
4352 (entry->error_subcode2 == 0)) {
4353 /*
4354 * We've got a race here: aborted
4355 * exchange not terminated, i.e.
4356 * response for the aborted command was
4357 * sent between the abort request was
4358 * received and processed.
4359 * Unfortunately, the firmware has a
4360 * silly requirement that all aborted
4361 * exchanges must be explicitely
4362 * terminated, otherwise it refuses to
4363 * send responses for the abort
4364 * requests. So, we have to
4365 * (re)terminate the exchange and retry
4366 * the abort response.
4367 */
4368 qlt_24xx_retry_term_exchange(vha,
4369 entry);
4370 } else
4371 ql_dbg(ql_dbg_tgt, vha, 0xe063,
4372 "qla_target(%d): ABTS_RESP_24XX "
4373 "failed %x (subcode %x:%x)",
4374 vha->vp_idx, entry->compl_status,
4375 entry->error_subcode1,
4376 entry->error_subcode2);
4377 }
4378 } else {
4379 ql_dbg(ql_dbg_tgt, vha, 0xe064,
4380 "qla_target(%d): Unexpected ABTS_RESP_24XX "
4381 "received\n", vha->vp_idx);
4382 }
4383 break;
4384
4385 default:
4386 ql_dbg(ql_dbg_tgt, vha, 0xe065,
4387 "qla_target(%d): Received unknown response pkt "
4388 "type %x\n", vha->vp_idx, pkt->entry_type);
4389 break;
4390 }
4391
4392 tgt->irq_cmd_count--;
4393}
4394
4395/*
4396 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4397 */
4398void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
4399 uint16_t *mailbox)
4400{
4401 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4402 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 4403 int login_code;
2d70c103
NB		 4404
4405 ql_dbg(ql_dbg_tgt, vha, 0xe039,
4406 "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
4407 vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
4408 ha->operating_mode, ha->current_topology);
4409
4410 if (!ha->tgt.tgt_ops)
4411 return;
4412
4413 if (unlikely(tgt == NULL)) {
4414 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
4415 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
4416 return;
4417 }
4418
4419 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
4420 IS_QLA2100(ha))
4421 return;
4422 /*
4423 * In tgt_stop mode we also should allow all requests to pass.
4424 * Otherwise, some commands can stuck.
4425 */
4426
4427 tgt->irq_cmd_count++;
4428
4429 switch (code) {
4430 case MBA_RESET: /* Reset */
4431 case MBA_SYSTEM_ERR: /* System Error */
4432 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
4433 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
4434 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
4435 "qla_target(%d): System error async event %#x "
6efb3c0a 4436 "occurred", vha->vp_idx, code);
2d70c103
NB		 4437 break;
4438 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
4439 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4440 break;
4441
4442 case MBA_LOOP_UP:
4443 {
4444 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 4445 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 4446 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4447 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4448 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4449 if (tgt->link_reinit_iocb_pending) {
4450 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
4451 0, 0, 0, 0, 0, 0);
4452 tgt->link_reinit_iocb_pending = 0;
4453 }
4454 break;
4455 }
4456
4457 case MBA_LIP_OCCURRED:
4458 case MBA_LOOP_DOWN:
4459 case MBA_LIP_RESET:
4460 case MBA_RSCN_UPDATE:
4461 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 4462 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 4463 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4464 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4465 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4466 break;
4467
4468 case MBA_PORT_UPDATE:
4469 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
4470 "qla_target(%d): Port update async event %#x "
6efb3c0a 4471 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 4472 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4473 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4474 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
4475
4476 login_code = le16_to_cpu(mailbox[2]);
4477 if (login_code == 0x4)
2d70c103
NB		 4478 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
4479 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 4480 else if (login_code == 0x7)
2d70c103
NB		 4481 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
4482 "Async MB 2: Port Logged Out\n");
4483 break;
4484
4485 default:
4486 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
6efb3c0a 4487 "qla_target(%d): Async event %#x occurred: "
4f1d0f19
AC		 4488 "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4489 code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4490 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4491 break;
4492 }
4493
4494 tgt->irq_cmd_count--;
4495}
4496
4497static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
4498 uint16_t loop_id)
4499{
4500 fc_port_t *fcport;
4501 int rc;
4502
4503 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
4504 if (!fcport) {
4505 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
4506 "qla_target(%d): Allocation of tmp FC port failed",
4507 vha->vp_idx);
4508 return NULL;
4509 }
4510
4511 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
4512
4513 fcport->loop_id = loop_id;
4514
4515 rc = qla2x00_get_port_database(vha, fcport, 0);
4516 if (rc != QLA_SUCCESS) {
4517 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
4518 "qla_target(%d): Failed to retrieve fcport "
4519 "information -- get_port_database() returned %x "
4520 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
4521 kfree(fcport);
4522 return NULL;
4523 }
4524
4525 return fcport;
4526}
4527
4528/* Must be called under tgt_mutex */
4529static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
4530 uint8_t *s_id)
4531{
2d70c103
NB		 4532 struct qla_tgt_sess *sess = NULL;
4533 fc_port_t *fcport = NULL;
4534 int rc, global_resets;
4535 uint16_t loop_id = 0;
4536
4537retry:
0e8cd71c
SK		 4538 global_resets =
4539 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 4540
4541 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
4542 if (rc != 0) {
4543 if ((s_id[0] == 0xFF) &&
4544 (s_id[1] == 0xFC)) {
4545 /*
4546 * This is Domain Controller, so it should be
4547 * OK to drop SCSI commands from it.
4548 */
4549 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
4550 "Unable to find initiator with S_ID %x:%x:%x",
4551 s_id[0], s_id[1], s_id[2]);
4552 } else
4553 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
4554 "qla_target(%d): Unable to find "
4555 "initiator with S_ID %x:%x:%x",
4556 vha->vp_idx, s_id[0], s_id[1],
4557 s_id[2]);
4558 return NULL;
4559 }
4560
4561 fcport = qlt_get_port_database(vha, loop_id);
4562 if (!fcport)
4563 return NULL;
4564
4565 if (global_resets !=
0e8cd71c 4566 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 4567 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
4568 "qla_target(%d): global reset during session discovery "
4569 "(counter was %d, new %d), retrying", vha->vp_idx,
4570 global_resets,
0e8cd71c
SK		 4571 atomic_read(&vha->vha_tgt.
4572 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 4573 goto retry;
4574 }
4575
4576 sess = qlt_create_sess(vha, fcport, true);
4577
4578 kfree(fcport);
4579 return sess;
4580}
4581
4582static void qlt_abort_work(struct qla_tgt *tgt,
4583 struct qla_tgt_sess_work_param *prm)
4584{
4585 struct scsi_qla_host *vha = tgt->vha;
4586 struct qla_hw_data *ha = vha->hw;
4587 struct qla_tgt_sess *sess = NULL;
4588 unsigned long flags;
4589 uint32_t be_s_id;
4590 uint8_t s_id[3];
4591 int rc;
4592
4593 spin_lock_irqsave(&ha->hardware_lock, flags);
4594
4595 if (tgt->tgt_stop)
4596 goto out_term;
4597
4598 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
4599 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
4600 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
4601
4602 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4603 (unsigned char *)&be_s_id);
4604 if (!sess) {
4605 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4606
0e8cd71c 4607 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4608 sess = qlt_make_local_sess(vha, s_id);
4609 /* sess has got an extra creation ref */
0e8cd71c 4610 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4611
4612 spin_lock_irqsave(&ha->hardware_lock, flags);
4613 if (!sess)
4614 goto out_term;
4615 } else {
4616 kref_get(&sess->se_sess->sess_kref);
4617 }
4618
4619 if (tgt->tgt_stop)
4620 goto out_term;
4621
4622 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4623 if (rc != 0)
4624 goto out_term;
2d70c103
NB		 4625
4626 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4627 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4628 return;
4629
4630out_term:
4631 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
2d70c103
NB		 4632 if (sess)
4633 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4634 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4635}
4636
4637static void qlt_tmr_work(struct qla_tgt *tgt,
4638 struct qla_tgt_sess_work_param *prm)
4639{
4640 struct atio_from_isp *a = &prm->tm_iocb2;
4641 struct scsi_qla_host *vha = tgt->vha;
4642 struct qla_hw_data *ha = vha->hw;
4643 struct qla_tgt_sess *sess = NULL;
4644 unsigned long flags;
4645 uint8_t *s_id = NULL; /* to hide compiler warnings */
4646 int rc;
4647 uint32_t lun, unpacked_lun;
4648 int lun_size, fn;
4649 void *iocb;
4650
4651 spin_lock_irqsave(&ha->hardware_lock, flags);
4652
4653 if (tgt->tgt_stop)
4654 goto out_term;
4655
4656 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4657 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4658 if (!sess) {
4659 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4660
0e8cd71c 4661 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4662 sess = qlt_make_local_sess(vha, s_id);
4663 /* sess has got an extra creation ref */
0e8cd71c 4664 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4665
4666 spin_lock_irqsave(&ha->hardware_lock, flags);
4667 if (!sess)
4668 goto out_term;
4669 } else {
4670 kref_get(&sess->se_sess->sess_kref);
4671 }
4672
4673 iocb = a;
4674 lun = a->u.isp24.fcp_cmnd.lun;
4675 lun_size = sizeof(lun);
4676 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4677 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4678
4679 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4680 if (rc != 0)
4681 goto out_term;
2d70c103
NB		 4682
4683 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4684 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4685 return;
4686
4687out_term:
4688 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
2d70c103
NB		 4689 if (sess)
4690 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4691 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4692}
4693
4694static void qlt_sess_work_fn(struct work_struct *work)
4695{
4696 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4697 struct scsi_qla_host *vha = tgt->vha;
4698 unsigned long flags;
4699
4700 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4701
4702 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4703 while (!list_empty(&tgt->sess_works_list)) {
4704 struct qla_tgt_sess_work_param *prm = list_entry(
4705 tgt->sess_works_list.next, typeof(*prm),
4706 sess_works_list_entry);
4707
4708 /*
4709 * This work can be scheduled on several CPUs at time, so we
4710 * must delete the entry to eliminate double processing
4711 */
4712 list_del(&prm->sess_works_list_entry);
4713
4714 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4715
4716 switch (prm->type) {
4717 case QLA_TGT_SESS_WORK_ABORT:
4718 qlt_abort_work(tgt, prm);
4719 break;
4720 case QLA_TGT_SESS_WORK_TM:
4721 qlt_tmr_work(tgt, prm);
4722 break;
4723 default:
4724 BUG_ON(1);
4725 break;
4726 }
4727
4728 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4729
4730 kfree(prm);
4731 }
4732 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4733}
4734
4735/* Must be called under tgt_host_action_mutex */
4736int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4737{
4738 struct qla_tgt *tgt;
4739
4740 if (!QLA_TGT_MODE_ENABLED())
4741 return 0;
4742
33c36c0a
AE		 4743 if (!IS_TGT_MODE_CAPABLE(ha)) {
4744 ql_log(ql_log_warn, base_vha, 0xe070,
4745 "This adapter does not support target mode.\n");
4746 return 0;
4747 }
4748
2d70c103 4749 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 4750 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 4751
0e8cd71c 4752 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 4753
4754 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4755 if (!tgt) {
4756 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4757 "Unable to allocate struct qla_tgt\n");
4758 return -ENOMEM;
4759 }
4760
4761 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4762 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4763
4764 tgt->ha = ha;
4765 tgt->vha = base_vha;
4766 init_waitqueue_head(&tgt->waitQ);
4767 INIT_LIST_HEAD(&tgt->sess_list);
4768 INIT_LIST_HEAD(&tgt->del_sess_list);
4769 INIT_DELAYED_WORK(&tgt->sess_del_work,
4770 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4771 spin_lock_init(&tgt->sess_work_lock);
4772 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4773 INIT_LIST_HEAD(&tgt->sess_works_list);
4774 spin_lock_init(&tgt->srr_lock);
4775 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4776 INIT_LIST_HEAD(&tgt->srr_imm_list);
4777 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4778 atomic_set(&tgt->tgt_global_resets_count, 0);
4779
0e8cd71c 4780 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 4781
4782 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4783 "qla_target(%d): using 64 Bit PCI addressing",
4784 base_vha->vp_idx);
4785 tgt->tgt_enable_64bit_addr = 1;
4786 /* 3 is reserved */
4787 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4788 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4789 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4790
ddb95145
NB		 4791 if (base_vha->fc_vport)
4792 return 0;
4793
2d70c103
NB		 4794 mutex_lock(&qla_tgt_mutex);
4795 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4796 mutex_unlock(&qla_tgt_mutex);
4797
4798 return 0;
4799}
4800
4801/* Must be called under tgt_host_action_mutex */
4802int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4803{
0e8cd71c 4804 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 4805 return 0;
4806
ddb95145
NB		 4807 if (vha->fc_vport) {
4808 qlt_release(vha->vha_tgt.qla_tgt);
4809 return 0;
4810 }
2d70c103 4811 mutex_lock(&qla_tgt_mutex);
0e8cd71c 4812 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 4813 mutex_unlock(&qla_tgt_mutex);
4814
4815 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4816 vha->host_no, ha);
0e8cd71c 4817 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 4818
4819 return 0;
4820}
4821
4822static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4823 unsigned char *b)
4824{
4825 int i;
4826
4827 pr_debug("qla2xxx HW vha->node_name: ");
4828 for (i = 0; i < WWN_SIZE; i++)
4829 pr_debug("%02x ", vha->node_name[i]);
4830 pr_debug("\n");
4831 pr_debug("qla2xxx HW vha->port_name: ");
4832 for (i = 0; i < WWN_SIZE; i++)
4833 pr_debug("%02x ", vha->port_name[i]);
4834 pr_debug("\n");
4835
4836 pr_debug("qla2xxx passed configfs WWPN: ");
4837 put_unaligned_be64(wwpn, b);
4838 for (i = 0; i < WWN_SIZE; i++)
4839 pr_debug("%02x ", b[i]);
4840 pr_debug("\n");
4841}
4842
4843/**
4844 * qla_tgt_lport_register - register lport with external module
4845 *
4846 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4847 * @wwpn: Passwd FC target WWPN
4848 * @callback: lport initialization callback for tcm_qla2xxx code
4849 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4850 */
49a47f2c
NB		 4851int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
4852 u64 npiv_wwpn, u64 npiv_wwnn,
4853 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 4854{
4855 struct qla_tgt *tgt;
4856 struct scsi_qla_host *vha;
4857 struct qla_hw_data *ha;
4858 struct Scsi_Host *host;
4859 unsigned long flags;
4860 int rc;
4861 u8 b[WWN_SIZE];
4862
4863 mutex_lock(&qla_tgt_mutex);
4864 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4865 vha = tgt->vha;
4866 ha = vha->hw;
4867
4868 host = vha->host;
4869 if (!host)
4870 continue;
4871
2d70c103
NB		 4872 if (!(host->hostt->supported_mode & MODE_TARGET))
4873 continue;
4874
4875 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 4876 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 4877 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4878 host->host_no);
4879 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4880 continue;
4881 }
ddb95145
NB		 4882 if (tgt->tgt_stop) {
4883 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
4884 host->host_no);
4885 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4886 continue;
4887 }
2d70c103
NB		 4888 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4889
4890 if (!scsi_host_get(host)) {
4891 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4892 "Unable to scsi_host_get() for"
4893 " qla2xxx scsi_host\n");
4894 continue;
4895 }
49a47f2c 4896 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 4897
4898 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4899 scsi_host_put(host);
4900 continue;
4901 }
49a47f2c
NB		 4902 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
4903 if (rc != 0)
4904 scsi_host_put(host);
4905
ddb95145 4906 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 4907 return rc;
4908 }
4909 mutex_unlock(&qla_tgt_mutex);
4910
4911 return -ENODEV;
4912}
4913EXPORT_SYMBOL(qlt_lport_register);
4914
4915/**
4916 * qla_tgt_lport_deregister - Degister lport
4917 *
4918 * @vha: Registered scsi_qla_host pointer
4919 */
4920void qlt_lport_deregister(struct scsi_qla_host *vha)
4921{
4922 struct qla_hw_data *ha = vha->hw;
4923 struct Scsi_Host *sh = vha->host;
4924 /*
4925 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
4926 */
0e8cd71c 4927 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 4928 ha->tgt.tgt_ops = NULL;
4929 /*
4930 * Release the Scsi_Host reference for the underlying qla2xxx host
4931 */
4932 scsi_host_put(sh);
4933}
4934EXPORT_SYMBOL(qlt_lport_deregister);
4935
4936/* Must be called under HW lock */
4937void qlt_set_mode(struct scsi_qla_host *vha)
4938{
4939 struct qla_hw_data *ha = vha->hw;
4940
4941 switch (ql2x_ini_mode) {
4942 case QLA2XXX_INI_MODE_DISABLED:
4943 case QLA2XXX_INI_MODE_EXCLUSIVE:
4944 vha->host->active_mode = MODE_TARGET;
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/* Must be called under HW lock */
4958void qlt_clear_mode(struct scsi_qla_host *vha)
4959{
4960 struct qla_hw_data *ha = vha->hw;
4961
4962 switch (ql2x_ini_mode) {
4963 case QLA2XXX_INI_MODE_DISABLED:
4964 vha->host->active_mode = MODE_UNKNOWN;
4965 break;
4966 case QLA2XXX_INI_MODE_EXCLUSIVE:
4967 vha->host->active_mode = MODE_INITIATOR;
4968 break;
4969 case QLA2XXX_INI_MODE_ENABLED:
4970 vha->host->active_mode &= ~MODE_TARGET;
4971 break;
4972 default:
4973 break;
4974 }
4975
4976 if (ha->tgt.ini_mode_force_reverse)
4977 qla_reverse_ini_mode(vha);
4978}
4979
4980/*
4981 * qla_tgt_enable_vha - NO LOCK HELD
4982 *
4983 * host_reset, bring up w/ Target Mode Enabled
4984 */
4985void
4986qlt_enable_vha(struct scsi_qla_host *vha)
4987{
4988 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4989 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 4990 unsigned long flags;
0e8cd71c 4991 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 4992
4993 if (!tgt) {
4994 ql_dbg(ql_dbg_tgt, vha, 0xe069,
4995 "Unable to locate qla_tgt pointer from"
4996 " struct qla_hw_data\n");
4997 dump_stack();
4998 return;
4999 }
5000
5001 spin_lock_irqsave(&ha->hardware_lock, flags);
5002 tgt->tgt_stopped = 0;
5003 qlt_set_mode(vha);
5004 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5005
0e8cd71c
SK		 5006 if (vha->vp_idx) {
5007 qla24xx_disable_vp(vha);
5008 qla24xx_enable_vp(vha);
5009 } else {
5010 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
5011 qla2xxx_wake_dpc(base_vha);
5012 qla2x00_wait_for_hba_online(base_vha);
5013 }
2d70c103
NB		 5014}
5015EXPORT_SYMBOL(qlt_enable_vha);
5016
5017/*
5018 * qla_tgt_disable_vha - NO LOCK HELD
5019 *
5020 * Disable Target Mode and reset the adapter
5021 */
5022void
5023qlt_disable_vha(struct scsi_qla_host *vha)
5024{
5025 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5026 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5027 unsigned long flags;
5028
5029 if (!tgt) {
5030 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
5031 "Unable to locate qla_tgt pointer from"
5032 " struct qla_hw_data\n");
5033 dump_stack();
5034 return;
5035 }
5036
5037 spin_lock_irqsave(&ha->hardware_lock, flags);
5038 qlt_clear_mode(vha);
5039 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5040
5041 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5042 qla2xxx_wake_dpc(vha);
5043 qla2x00_wait_for_hba_online(vha);
5044}
5045
5046/*
5047 * Called from qla_init.c:qla24xx_vport_create() contex to setup
5048 * the target mode specific struct scsi_qla_host and struct qla_hw_data
5049 * members.
5050 */
5051void
5052qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
5053{
5054 if (!qla_tgt_mode_enabled(vha))
5055 return;
5056
0e8cd71c
SK		 5057 vha->vha_tgt.qla_tgt = NULL;
5058
5059 mutex_init(&vha->vha_tgt.tgt_mutex);
5060 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5061
5062 qlt_clear_mode(vha);
5063
5064 /*
5065 * NOTE: Currently the value is kept the same for <24xx and
5066 * >=24xx ISPs. If it is necessary to change it,
5067 * the check should be added for specific ISPs,
5068 * assigning the value appropriately.
5069 */
5070 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 5071
5072 qlt_add_target(ha, vha);
2d70c103
NB		 5073}
5074
5075void
5076qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
5077{
5078 /*
5079 * FC-4 Feature bit 0 indicates target functionality to the name server.
5080 */
5081 if (qla_tgt_mode_enabled(vha)) {
5082 if (qla_ini_mode_enabled(vha))
5083 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
5084 else
5085 ct_req->req.rff_id.fc4_feature = BIT_0;
5086 } else if (qla_ini_mode_enabled(vha)) {
5087 ct_req->req.rff_id.fc4_feature = BIT_1;
5088 }
5089}
5090
5091/*
5092 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
5093 * @ha: HA context
5094 *
5095 * Beginning of ATIO ring has initialization control block already built
5096 * by nvram config routine.
5097 *
5098 * Returns 0 on success.
5099 */
5100void
5101qlt_init_atio_q_entries(struct scsi_qla_host *vha)
5102{
5103 struct qla_hw_data *ha = vha->hw;
5104 uint16_t cnt;
5105 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
5106
5107 if (!qla_tgt_mode_enabled(vha))
5108 return;
5109
5110 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
5111 pkt->u.raw.signature = ATIO_PROCESSED;
5112 pkt++;
5113 }
5114
5115}
5116
5117/*
5118 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
5119 * @ha: SCSI driver HA context
5120 */
5121void
5122qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
5123{
5124 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 5125 struct atio_from_isp *pkt;
5126 int cnt, i;
5127
5128 if (!vha->flags.online)
5129 return;
5130
5131 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
5132 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5133 cnt = pkt->u.raw.entry_count;
5134
5135 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
5136
5137 for (i = 0; i < cnt; i++) {
5138 ha->tgt.atio_ring_index++;
5139 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
5140 ha->tgt.atio_ring_index = 0;
5141 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
5142 } else
5143 ha->tgt.atio_ring_ptr++;
5144
5145 pkt->u.raw.signature = ATIO_PROCESSED;
5146 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5147 }
5148 wmb();
5149 }
5150
5151 /* Adjust ring index */
aa230bc5 5152 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 5153}
5154
5155void
aa230bc5 5156qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 5157{
5158 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 5159 if (!QLA_TGT_MODE_ENABLED())
5160 return;
2d70c103 5161
aa230bc5
AE		 5162 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
5163 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
5164 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
5165
5166 if (IS_ATIO_MSIX_CAPABLE(ha)) {
5167 struct qla_msix_entry *msix = &ha->msix_entries[2];
5168 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
5169
5170 icb->msix_atio = cpu_to_le16(msix->entry);
5171 ql_dbg(ql_dbg_init, vha, 0xf072,
5172 "Registering ICB vector 0x%x for atio que.\n",
5173 msix->entry);
2d70c103
NB		 5174 }
5175}
5176
5177void
5178qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
5179{
5180 struct qla_hw_data *ha = vha->hw;
5181
5182 if (qla_tgt_mode_enabled(vha)) {
5183 if (!ha->tgt.saved_set) {
5184 /* We save only once */
5185 ha->tgt.saved_exchange_count = nv->exchange_count;
5186 ha->tgt.saved_firmware_options_1 =
5187 nv->firmware_options_1;
5188 ha->tgt.saved_firmware_options_2 =
5189 nv->firmware_options_2;
5190 ha->tgt.saved_firmware_options_3 =
5191 nv->firmware_options_3;
5192 ha->tgt.saved_set = 1;
5193 }
5194
5195 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5196
5197 /* Enable target mode */
5198 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5199
5200 /* Disable ini mode, if requested */
5201 if (!qla_ini_mode_enabled(vha))
5202 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
5203
5204 /* Disable Full Login after LIP */
5205 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5206 /* Enable initial LIP */
5207 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5208 /* Enable FC tapes support */
5209 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5210 /* Disable Full Login after LIP */
5211 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5212 /* Enable target PRLI control */
5213 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5214 } else {
5215 if (ha->tgt.saved_set) {
5216 nv->exchange_count = ha->tgt.saved_exchange_count;
5217 nv->firmware_options_1 =
5218 ha->tgt.saved_firmware_options_1;
5219 nv->firmware_options_2 =
5220 ha->tgt.saved_firmware_options_2;
5221 nv->firmware_options_3 =
5222 ha->tgt.saved_firmware_options_3;
5223 }
5224 return;
5225 }
5226
5227 /* out-of-order frames reassembly */
5228 nv->firmware_options_3 |= BIT_6|BIT_9;
5229
5230 if (ha->tgt.enable_class_2) {
5231 if (vha->flags.init_done)
5232 fc_host_supported_classes(vha->host) =
5233 FC_COS_CLASS2 | FC_COS_CLASS3;
5234
5235 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5236 } else {
5237 if (vha->flags.init_done)
5238 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5239
5240 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5241 }
5242}
5243
5244void
5245qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
5246 struct init_cb_24xx *icb)
5247{
5248 struct qla_hw_data *ha = vha->hw;
5249
5250 if (ha->tgt.node_name_set) {
5251 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5252 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5253 }
5254}
5255
aa230bc5
AE		 5256void
5257qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
5258{
5259 struct qla_hw_data *ha = vha->hw;
5260
5261 if (!QLA_TGT_MODE_ENABLED())
5262 return;
5263
5264 if (qla_tgt_mode_enabled(vha)) {
5265 if (!ha->tgt.saved_set) {
5266 /* We save only once */
5267 ha->tgt.saved_exchange_count = nv->exchange_count;
5268 ha->tgt.saved_firmware_options_1 =
5269 nv->firmware_options_1;
5270 ha->tgt.saved_firmware_options_2 =
5271 nv->firmware_options_2;
5272 ha->tgt.saved_firmware_options_3 =
5273 nv->firmware_options_3;
5274 ha->tgt.saved_set = 1;
5275 }
5276
5277 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5278
5279 /* Enable target mode */
5280 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5281
5282 /* Disable ini mode, if requested */
5283 if (!qla_ini_mode_enabled(vha))
5284 nv->firmware_options_1 |=
5285 __constant_cpu_to_le32(BIT_5);
5286
5287 /* Disable Full Login after LIP */
5288 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5289 /* Enable initial LIP */
5290 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5291 /* Enable FC tapes support */
5292 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5293 /* Disable Full Login after LIP */
5294 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5295 /* Enable target PRLI control */
5296 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5297 } else {
5298 if (ha->tgt.saved_set) {
5299 nv->exchange_count = ha->tgt.saved_exchange_count;
5300 nv->firmware_options_1 =
5301 ha->tgt.saved_firmware_options_1;
5302 nv->firmware_options_2 =
5303 ha->tgt.saved_firmware_options_2;
5304 nv->firmware_options_3 =
5305 ha->tgt.saved_firmware_options_3;
5306 }
5307 return;
5308 }
5309
5310 /* out-of-order frames reassembly */
5311 nv->firmware_options_3 |= BIT_6|BIT_9;
5312
5313 if (ha->tgt.enable_class_2) {
5314 if (vha->flags.init_done)
5315 fc_host_supported_classes(vha->host) =
5316 FC_COS_CLASS2 | FC_COS_CLASS3;
5317
5318 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5319 } else {
5320 if (vha->flags.init_done)
5321 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5322
5323 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5324 }
5325}
5326
5327void
5328qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
5329 struct init_cb_81xx *icb)
5330{
5331 struct qla_hw_data *ha = vha->hw;
5332
5333 if (!QLA_TGT_MODE_ENABLED())
5334 return;
5335
5336 if (ha->tgt.node_name_set) {
5337 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5338 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5339 }
5340}
5341
5342void
5343qlt_83xx_iospace_config(struct qla_hw_data *ha)
5344{
5345 if (!QLA_TGT_MODE_ENABLED())
5346 return;
5347
5348 ha->msix_count += 1; /* For ATIO Q */
5349}
5350
2d70c103
NB		 5351int
5352qlt_24xx_process_response_error(struct scsi_qla_host *vha,
5353 struct sts_entry_24xx *pkt)
5354{
5355 switch (pkt->entry_type) {
5356 case ABTS_RECV_24XX:
5357 case ABTS_RESP_24XX:
5358 case CTIO_TYPE7:
5359 case NOTIFY_ACK_TYPE:
f83adb61 5360 case CTIO_CRC2:
2d70c103
NB		 5361 return 1;
5362 default:
5363 return 0;
5364 }
5365}
5366
5367void
5368qlt_modify_vp_config(struct scsi_qla_host *vha,
5369 struct vp_config_entry_24xx *vpmod)
5370{
5371 if (qla_tgt_mode_enabled(vha))
5372 vpmod->options_idx1 &= ~BIT_5;
5373 /* Disable ini mode, if requested */
5374 if (!qla_ini_mode_enabled(vha))
5375 vpmod->options_idx1 &= ~BIT_4;
5376}
5377
5378void
5379qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
5380{
5381 if (!QLA_TGT_MODE_ENABLED())
5382 return;
5383
aa230bc5
AE		 5384 if (ha->mqenable || IS_QLA83XX(ha)) {
5385 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
5386 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
5387 } else {
5388 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
5389 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
5390 }
5391
0e8cd71c
SK		 5392 mutex_init(&base_vha->vha_tgt.tgt_mutex);
5393 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5394 qlt_clear_mode(base_vha);
5395}
5396
aa230bc5
AE		 5397irqreturn_t
5398qla83xx_msix_atio_q(int irq, void *dev_id)
5399{
5400 struct rsp_que *rsp;
5401 scsi_qla_host_t *vha;
5402 struct qla_hw_data *ha;
5403 unsigned long flags;
5404
5405 rsp = (struct rsp_que *) dev_id;
5406 ha = rsp->hw;
5407 vha = pci_get_drvdata(ha->pdev);
5408
5409 spin_lock_irqsave(&ha->hardware_lock, flags);
5410
5411 qlt_24xx_process_atio_queue(vha);
5412 qla24xx_process_response_queue(vha, rsp);
5413
5414 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5415
5416 return IRQ_HANDLED;
5417}
5418
2d70c103
NB		 5419int
5420qlt_mem_alloc(struct qla_hw_data *ha)
5421{
5422 if (!QLA_TGT_MODE_ENABLED())
5423 return 0;
5424
5425 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
5426 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
5427 if (!ha->tgt.tgt_vp_map)
5428 return -ENOMEM;
5429
5430 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
5431 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
5432 &ha->tgt.atio_dma, GFP_KERNEL);
5433 if (!ha->tgt.atio_ring) {
5434 kfree(ha->tgt.tgt_vp_map);
5435 return -ENOMEM;
5436 }
5437 return 0;
5438}
5439
5440void
5441qlt_mem_free(struct qla_hw_data *ha)
5442{
5443 if (!QLA_TGT_MODE_ENABLED())
5444 return;
5445
5446 if (ha->tgt.atio_ring) {
5447 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
5448 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
5449 ha->tgt.atio_dma);
5450 }
5451 kfree(ha->tgt.tgt_vp_map);
5452}
5453
5454/* vport_slock to be held by the caller */
5455void
5456qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
5457{
5458 if (!QLA_TGT_MODE_ENABLED())
5459 return;
5460
5461 switch (cmd) {
5462 case SET_VP_IDX:
5463 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
5464 break;
5465 case SET_AL_PA:
5466 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
5467 break;
5468 case RESET_VP_IDX:
5469 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
5470 break;
5471 case RESET_AL_PA:
5472 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
5473 break;
5474 }
5475}
5476
5477static int __init qlt_parse_ini_mode(void)
5478{
5479 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
5480 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
5481 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
5482 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
5483 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
5484 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
5485 else
5486 return false;
5487
5488 return true;
5489}
5490
5491int __init qlt_init(void)
5492{
5493 int ret;
5494
5495 if (!qlt_parse_ini_mode()) {
5496 ql_log(ql_log_fatal, NULL, 0xe06b,
5497 "qlt_parse_ini_mode() failed\n");
5498 return -EINVAL;
5499 }
5500
5501 if (!QLA_TGT_MODE_ENABLED())
5502 return 0;
5503
5504 qla_tgt_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep",
5505 sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd), 0,
5506 NULL);
5507 if (!qla_tgt_cmd_cachep) {
5508 ql_log(ql_log_fatal, NULL, 0xe06c,
5509 "kmem_cache_create for qla_tgt_cmd_cachep failed\n");
5510 return -ENOMEM;
5511 }
5512
5513 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
5514 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
5515 qla_tgt_mgmt_cmd), 0, NULL);
5516 if (!qla_tgt_mgmt_cmd_cachep) {
5517 ql_log(ql_log_fatal, NULL, 0xe06d,
5518 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
5519 ret = -ENOMEM;
5520 goto out;
5521 }
5522
5523 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
5524 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
5525 if (!qla_tgt_mgmt_cmd_mempool) {
5526 ql_log(ql_log_fatal, NULL, 0xe06e,
5527 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
5528 ret = -ENOMEM;
5529 goto out_mgmt_cmd_cachep;
5530 }
5531
5532 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
5533 if (!qla_tgt_wq) {
5534 ql_log(ql_log_fatal, NULL, 0xe06f,
5535 "alloc_workqueue for qla_tgt_wq failed\n");
5536 ret = -ENOMEM;
5537 goto out_cmd_mempool;
5538 }
5539 /*
5540 * Return 1 to signal that initiator-mode is being disabled
5541 */
5542 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
5543
5544out_cmd_mempool:
5545 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5546out_mgmt_cmd_cachep:
5547 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
5548out:
5549 kmem_cache_destroy(qla_tgt_cmd_cachep);
5550 return ret;
5551}
5552
5553void qlt_exit(void)
5554{
5555 if (!QLA_TGT_MODE_ENABLED())
5556 return;
5557
5558 destroy_workqueue(qla_tgt_wq);
5559 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5560 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
5561 kmem_cache_destroy(qla_tgt_cmd_cachep);
5562}
Linux kernel - Deliverables
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