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target: simplify core_tmr_abort_task
[mirror_ubuntu-artful-kernel.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 */
2d70c103
NB		 107static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
108static mempool_t *qla_tgt_mgmt_cmd_mempool;
109static struct workqueue_struct *qla_tgt_wq;
110static DEFINE_MUTEX(qla_tgt_mutex);
111static LIST_HEAD(qla_tgt_glist);
112
113/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
114static struct qla_tgt_sess *qlt_find_sess_by_port_name(
115 struct qla_tgt *tgt,
116 const uint8_t *port_name)
117{
118 struct qla_tgt_sess *sess;
119
120 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
121 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
122 return sess;
123 }
124
125 return NULL;
126}
127
128/* Might release hw lock, then reaquire!! */
129static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
130{
131 /* Send marker if required */
132 if (unlikely(vha->marker_needed != 0)) {
133 int rc = qla2x00_issue_marker(vha, vha_locked);
134 if (rc != QLA_SUCCESS) {
135 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
136 "qla_target(%d): issue_marker() failed\n",
137 vha->vp_idx);
138 }
139 return rc;
140 }
141 return QLA_SUCCESS;
142}
143
144static inline
145struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
146 uint8_t *d_id)
147{
148 struct qla_hw_data *ha = vha->hw;
149 uint8_t vp_idx;
150
151 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
152 return NULL;
153
154 if (vha->d_id.b.al_pa == d_id[2])
155 return vha;
156
157 BUG_ON(ha->tgt.tgt_vp_map == NULL);
158 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
159 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
160 return ha->tgt.tgt_vp_map[vp_idx].vha;
161
162 return NULL;
163}
164
165static inline
166struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
167 uint16_t vp_idx)
168{
169 struct qla_hw_data *ha = vha->hw;
170
171 if (vha->vp_idx == vp_idx)
172 return vha;
173
174 BUG_ON(ha->tgt.tgt_vp_map == NULL);
175 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
176 return ha->tgt.tgt_vp_map[vp_idx].vha;
177
178 return NULL;
179}
180
181void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
182 struct atio_from_isp *atio)
183{
f83adb61
QT		 184 ql_dbg(ql_dbg_tgt, vha, 0xe072,
185 "%s: qla_target(%d): type %x ox_id %04x\n",
186 __func__, vha->vp_idx, atio->u.raw.entry_type,
187 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
188
2d70c103
NB		 189 switch (atio->u.raw.entry_type) {
190 case ATIO_TYPE7:
191 {
192 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
193 atio->u.isp24.fcp_hdr.d_id);
194 if (unlikely(NULL == host)) {
195 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
196 "qla_target(%d): Received ATIO_TYPE7 "
197 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
198 atio->u.isp24.fcp_hdr.d_id[0],
199 atio->u.isp24.fcp_hdr.d_id[1],
200 atio->u.isp24.fcp_hdr.d_id[2]);
201 break;
202 }
203 qlt_24xx_atio_pkt(host, atio);
204 break;
205 }
206
207 case IMMED_NOTIFY_TYPE:
208 {
209 struct scsi_qla_host *host = vha;
210 struct imm_ntfy_from_isp *entry =
211 (struct imm_ntfy_from_isp *)atio;
212
213 if ((entry->u.isp24.vp_index != 0xFF) &&
214 (entry->u.isp24.nport_handle != 0xFFFF)) {
215 host = qlt_find_host_by_vp_idx(vha,
216 entry->u.isp24.vp_index);
217 if (unlikely(!host)) {
218 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
219 "qla_target(%d): Received "
220 "ATIO (IMMED_NOTIFY_TYPE) "
221 "with unknown vp_index %d\n",
222 vha->vp_idx, entry->u.isp24.vp_index);
223 break;
224 }
225 }
226 qlt_24xx_atio_pkt(host, atio);
227 break;
228 }
229
230 default:
231 ql_dbg(ql_dbg_tgt, vha, 0xe040,
232 "qla_target(%d): Received unknown ATIO atio "
233 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
234 break;
235 }
236
237 return;
238}
239
240void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
241{
242 switch (pkt->entry_type) {
f83adb61
QT		 243 case CTIO_CRC2:
244 ql_dbg(ql_dbg_tgt, vha, 0xe073,
245 "qla_target(%d):%s: CRC2 Response pkt\n",
246 vha->vp_idx, __func__);
2d70c103
NB		 247 case CTIO_TYPE7:
248 {
249 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
250 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
251 entry->vp_index);
252 if (unlikely(!host)) {
253 ql_dbg(ql_dbg_tgt, vha, 0xe041,
254 "qla_target(%d): Response pkt (CTIO_TYPE7) "
255 "received, with unknown vp_index %d\n",
256 vha->vp_idx, entry->vp_index);
257 break;
258 }
259 qlt_response_pkt(host, pkt);
260 break;
261 }
262
263 case IMMED_NOTIFY_TYPE:
264 {
265 struct scsi_qla_host *host = vha;
266 struct imm_ntfy_from_isp *entry =
267 (struct imm_ntfy_from_isp *)pkt;
268
269 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
270 if (unlikely(!host)) {
271 ql_dbg(ql_dbg_tgt, vha, 0xe042,
272 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
273 "received, with unknown vp_index %d\n",
274 vha->vp_idx, entry->u.isp24.vp_index);
275 break;
276 }
277 qlt_response_pkt(host, pkt);
278 break;
279 }
280
281 case NOTIFY_ACK_TYPE:
282 {
283 struct scsi_qla_host *host = vha;
284 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
285
286 if (0xFF != entry->u.isp24.vp_index) {
287 host = qlt_find_host_by_vp_idx(vha,
288 entry->u.isp24.vp_index);
289 if (unlikely(!host)) {
290 ql_dbg(ql_dbg_tgt, vha, 0xe043,
291 "qla_target(%d): Response "
292 "pkt (NOTIFY_ACK_TYPE) "
293 "received, with unknown "
294 "vp_index %d\n", vha->vp_idx,
295 entry->u.isp24.vp_index);
296 break;
297 }
298 }
299 qlt_response_pkt(host, pkt);
300 break;
301 }
302
303 case ABTS_RECV_24XX:
304 {
305 struct abts_recv_from_24xx *entry =
306 (struct abts_recv_from_24xx *)pkt;
307 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
308 entry->vp_index);
309 if (unlikely(!host)) {
310 ql_dbg(ql_dbg_tgt, vha, 0xe044,
311 "qla_target(%d): Response pkt "
312 "(ABTS_RECV_24XX) received, with unknown "
313 "vp_index %d\n", vha->vp_idx, entry->vp_index);
314 break;
315 }
316 qlt_response_pkt(host, pkt);
317 break;
318 }
319
320 case ABTS_RESP_24XX:
321 {
322 struct abts_resp_to_24xx *entry =
323 (struct abts_resp_to_24xx *)pkt;
324 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
325 entry->vp_index);
326 if (unlikely(!host)) {
327 ql_dbg(ql_dbg_tgt, vha, 0xe045,
328 "qla_target(%d): Response pkt "
329 "(ABTS_RECV_24XX) received, with unknown "
330 "vp_index %d\n", vha->vp_idx, entry->vp_index);
331 break;
332 }
333 qlt_response_pkt(host, pkt);
334 break;
335 }
336
337 default:
338 qlt_response_pkt(vha, pkt);
339 break;
340 }
341
342}
343
344static void qlt_free_session_done(struct work_struct *work)
345{
346 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
347 free_work);
348 struct qla_tgt *tgt = sess->tgt;
349 struct scsi_qla_host *vha = sess->vha;
350 struct qla_hw_data *ha = vha->hw;
351
352 BUG_ON(!tgt);
353 /*
354 * Release the target session for FC Nexus from fabric module code.
355 */
356 if (sess->se_sess != NULL)
357 ha->tgt.tgt_ops->free_session(sess);
358
359 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
360 "Unregistration of sess %p finished\n", sess);
361
362 kfree(sess);
363 /*
364 * We need to protect against race, when tgt is freed before or
365 * inside wake_up()
366 */
367 tgt->sess_count--;
368 if (tgt->sess_count == 0)
369 wake_up_all(&tgt->waitQ);
370}
371
372/* ha->hardware_lock supposed to be held on entry */
373void qlt_unreg_sess(struct qla_tgt_sess *sess)
374{
375 struct scsi_qla_host *vha = sess->vha;
376
377 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
378
379 list_del(&sess->sess_list_entry);
380 if (sess->deleted)
381 list_del(&sess->del_list_entry);
382
383 INIT_WORK(&sess->free_work, qlt_free_session_done);
384 schedule_work(&sess->free_work);
385}
386EXPORT_SYMBOL(qlt_unreg_sess);
387
388/* ha->hardware_lock supposed to be held on entry */
389static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
390{
391 struct qla_hw_data *ha = vha->hw;
392 struct qla_tgt_sess *sess = NULL;
393 uint32_t unpacked_lun, lun = 0;
394 uint16_t loop_id;
395 int res = 0;
396 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
397 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
398
399 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
400 if (loop_id == 0xFFFF) {
401#if 0 /* FIXME: Re-enable Global event handling.. */
402 /* Global event */
403 atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
404 qlt_clear_tgt_db(ha->tgt.qla_tgt, 1);
405 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
406 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
407 typeof(*sess), sess_list_entry);
408 switch (mcmd) {
409 case QLA_TGT_NEXUS_LOSS_SESS:
410 mcmd = QLA_TGT_NEXUS_LOSS;
411 break;
412 case QLA_TGT_ABORT_ALL_SESS:
413 mcmd = QLA_TGT_ABORT_ALL;
414 break;
415 case QLA_TGT_NEXUS_LOSS:
416 case QLA_TGT_ABORT_ALL:
417 break;
418 default:
419 ql_dbg(ql_dbg_tgt, vha, 0xe046,
420 "qla_target(%d): Not allowed "
421 "command %x in %s", vha->vp_idx,
422 mcmd, __func__);
423 sess = NULL;
424 break;
425 }
426 } else
427 sess = NULL;
428#endif
429 } else {
430 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
431 }
432
433 ql_dbg(ql_dbg_tgt, vha, 0xe000,
434 "Using sess for qla_tgt_reset: %p\n", sess);
435 if (!sess) {
436 res = -ESRCH;
437 return res;
438 }
439
440 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 441 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
442 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 443 mcmd, loop_id);
444
445 lun = a->u.isp24.fcp_cmnd.lun;
446 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
447
448 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
449 iocb, QLA24XX_MGMT_SEND_NACK);
450}
451
452/* ha->hardware_lock supposed to be held on entry */
453static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
454 bool immediate)
455{
456 struct qla_tgt *tgt = sess->tgt;
457 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
458
459 if (sess->deleted)
460 return;
461
462 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
463 "Scheduling sess %p for deletion\n", sess);
464 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
465 sess->deleted = 1;
466
467 if (immediate)
468 dev_loss_tmo = 0;
469
470 sess->expires = jiffies + dev_loss_tmo * HZ;
471
472 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
7b833558 473 "qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
2d70c103 474 "deletion in %u secs (expires: %lu) immed: %d\n",
7b833558
OK		 475 sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
476 sess->expires, immediate);
2d70c103
NB		 477
478 if (immediate)
479 schedule_delayed_work(&tgt->sess_del_work, 0);
480 else
481 schedule_delayed_work(&tgt->sess_del_work,
63832aab 482 sess->expires - jiffies);
2d70c103
NB		 483}
484
485/* ha->hardware_lock supposed to be held on entry */
486static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
487{
488 struct qla_tgt_sess *sess;
489
490 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
491 qlt_schedule_sess_for_deletion(sess, true);
492
493 /* At this point tgt could be already dead */
494}
495
496static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
497 uint16_t *loop_id)
498{
499 struct qla_hw_data *ha = vha->hw;
500 dma_addr_t gid_list_dma;
501 struct gid_list_info *gid_list;
502 char *id_iter;
503 int res, rc, i;
504 uint16_t entries;
505
506 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
507 &gid_list_dma, GFP_KERNEL);
508 if (!gid_list) {
509 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
510 "qla_target(%d): DMA Alloc failed of %u\n",
511 vha->vp_idx, qla2x00_gid_list_size(ha));
512 return -ENOMEM;
513 }
514
515 /* Get list of logged in devices */
516 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
517 if (rc != QLA_SUCCESS) {
518 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
519 "qla_target(%d): get_id_list() failed: %x\n",
520 vha->vp_idx, rc);
521 res = -1;
522 goto out_free_id_list;
523 }
524
525 id_iter = (char *)gid_list;
526 res = -1;
527 for (i = 0; i < entries; i++) {
528 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
529 if ((gid->al_pa == s_id[2]) &&
530 (gid->area == s_id[1]) &&
531 (gid->domain == s_id[0])) {
532 *loop_id = le16_to_cpu(gid->loop_id);
533 res = 0;
534 break;
535 }
536 id_iter += ha->gid_list_info_size;
537 }
538
539out_free_id_list:
540 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
541 gid_list, gid_list_dma);
542 return res;
543}
544
2d70c103
NB		 545/* ha->hardware_lock supposed to be held on entry */
546static void qlt_undelete_sess(struct qla_tgt_sess *sess)
547{
548 BUG_ON(!sess->deleted);
549
550 list_del(&sess->del_list_entry);
551 sess->deleted = 0;
552}
553
554static void qlt_del_sess_work_fn(struct delayed_work *work)
555{
556 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
557 sess_del_work);
558 struct scsi_qla_host *vha = tgt->vha;
559 struct qla_hw_data *ha = vha->hw;
560 struct qla_tgt_sess *sess;
63832aab 561 unsigned long flags, elapsed;
2d70c103
NB		 562
563 spin_lock_irqsave(&ha->hardware_lock, flags);
564 while (!list_empty(&tgt->del_sess_list)) {
565 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
566 del_list_entry);
63832aab
SU		 567 elapsed = jiffies;
568 if (time_after_eq(elapsed, sess->expires)) {
2d70c103
NB		 569 qlt_undelete_sess(sess);
570
08234e3a
JE		 571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
572 "Timeout: sess %p about to be deleted\n",
573 sess);
574 ha->tgt.tgt_ops->shutdown_sess(sess);
575 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 576 } else {
577 schedule_delayed_work(&tgt->sess_del_work,
63832aab 578 sess->expires - elapsed);
2d70c103
NB		 579 break;
580 }
581 }
582 spin_unlock_irqrestore(&ha->hardware_lock, flags);
583}
584
585/*
586 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
587 * Caller must put it.
588 */
589static struct qla_tgt_sess *qlt_create_sess(
590 struct scsi_qla_host *vha,
591 fc_port_t *fcport,
592 bool local)
593{
594 struct qla_hw_data *ha = vha->hw;
595 struct qla_tgt_sess *sess;
596 unsigned long flags;
597 unsigned char be_sid[3];
598
599 /* Check to avoid double sessions */
600 spin_lock_irqsave(&ha->hardware_lock, flags);
0e8cd71c 601 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
2d70c103
NB		 602 sess_list_entry) {
603 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
604 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
605 "Double sess %p found (s_id %x:%x:%x, "
606 "loop_id %d), updating to d_id %x:%x:%x, "
607 "loop_id %d", sess, sess->s_id.b.domain,
608 sess->s_id.b.al_pa, sess->s_id.b.area,
609 sess->loop_id, fcport->d_id.b.domain,
610 fcport->d_id.b.al_pa, fcport->d_id.b.area,
611 fcport->loop_id);
612
613 if (sess->deleted)
614 qlt_undelete_sess(sess);
615
616 kref_get(&sess->se_sess->sess_kref);
c8292d1d
RD		 617 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
618 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
619
2d70c103
NB		 620 if (sess->local && !local)
621 sess->local = 0;
622 spin_unlock_irqrestore(&ha->hardware_lock, flags);
623
624 return sess;
625 }
626 }
627 spin_unlock_irqrestore(&ha->hardware_lock, flags);
628
629 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
630 if (!sess) {
631 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
7b833558
OK		 632 "qla_target(%u): session allocation failed, all commands "
633 "from port %8phC will be refused", vha->vp_idx,
634 fcport->port_name);
2d70c103
NB		 635
636 return NULL;
637 }
0e8cd71c 638 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 639 sess->vha = vha;
640 sess->s_id = fcport->d_id;
641 sess->loop_id = fcport->loop_id;
642 sess->local = local;
643
644 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
645 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
0e8cd71c 646 sess, vha->vha_tgt.qla_tgt);
2d70c103
NB		 647
648 be_sid[0] = sess->s_id.b.domain;
649 be_sid[1] = sess->s_id.b.area;
650 be_sid[2] = sess->s_id.b.al_pa;
651 /*
652 * Determine if this fc_port->port_name is allowed to access
653 * target mode using explict NodeACLs+MappedLUNs, or using
654 * TPG demo mode. If this is successful a target mode FC nexus
655 * is created.
656 */
657 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
658 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
659 kfree(sess);
660 return NULL;
661 }
662 /*
663 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
664 * access across ->hardware_lock reaquire.
665 */
666 kref_get(&sess->se_sess->sess_kref);
667
c8292d1d 668 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
2d70c103
NB		 669 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
670 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
671
672 spin_lock_irqsave(&ha->hardware_lock, flags);
0e8cd71c
SK		 673 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
674 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103
NB		 675 spin_unlock_irqrestore(&ha->hardware_lock, flags);
676
677 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 678 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
679 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
680 vha->vp_idx, local ? "local " : "", fcport->port_name,
681 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
682 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 683
684 return sess;
685}
686
687/*
688 * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
689 */
690void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
691{
692 struct qla_hw_data *ha = vha->hw;
0e8cd71c 693 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 694 struct qla_tgt_sess *sess;
695 unsigned long flags;
696
697 if (!vha->hw->tgt.tgt_ops)
698 return;
699
700 if (!tgt || (fcport->port_type != FCT_INITIATOR))
701 return;
702
0e8cd71c
SK		 703 if (qla_ini_mode_enabled(vha))
704 return;
705
2d70c103
NB		 706 spin_lock_irqsave(&ha->hardware_lock, flags);
707 if (tgt->tgt_stop) {
708 spin_unlock_irqrestore(&ha->hardware_lock, flags);
709 return;
710 }
711 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
712 if (!sess) {
713 spin_unlock_irqrestore(&ha->hardware_lock, flags);
714
0e8cd71c 715 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 716 sess = qlt_create_sess(vha, fcport, false);
0e8cd71c 717 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 718
719 spin_lock_irqsave(&ha->hardware_lock, flags);
720 } else {
721 kref_get(&sess->se_sess->sess_kref);
722
723 if (sess->deleted) {
724 qlt_undelete_sess(sess);
725
726 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
7b833558
OK		 727 "qla_target(%u): %ssession for port %8phC "
728 "(loop ID %d) reappeared\n", vha->vp_idx,
729 sess->local ? "local " : "", sess->port_name,
2d70c103
NB		 730 sess->loop_id);
731
732 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
733 "Reappeared sess %p\n", sess);
734 }
c8292d1d
RD		 735 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
736 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
2d70c103
NB		 737 }
738
739 if (sess && sess->local) {
740 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
741 "qla_target(%u): local session for "
7b833558
OK		 742 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
743 fcport->port_name, sess->loop_id);
2d70c103
NB		 744 sess->local = 0;
745 }
2d70c103 746 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 747 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 748}
749
750void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
751{
752 struct qla_hw_data *ha = vha->hw;
0e8cd71c 753 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 754 struct qla_tgt_sess *sess;
755 unsigned long flags;
756
757 if (!vha->hw->tgt.tgt_ops)
758 return;
759
760 if (!tgt || (fcport->port_type != FCT_INITIATOR))
761 return;
762
763 spin_lock_irqsave(&ha->hardware_lock, flags);
764 if (tgt->tgt_stop) {
765 spin_unlock_irqrestore(&ha->hardware_lock, flags);
766 return;
767 }
768 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
769 if (!sess) {
770 spin_unlock_irqrestore(&ha->hardware_lock, flags);
771 return;
772 }
773
774 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
775
776 sess->local = 1;
777 qlt_schedule_sess_for_deletion(sess, false);
778 spin_unlock_irqrestore(&ha->hardware_lock, flags);
779}
780
781static inline int test_tgt_sess_count(struct qla_tgt *tgt)
782{
783 struct qla_hw_data *ha = tgt->ha;
784 unsigned long flags;
785 int res;
786 /*
787 * We need to protect against race, when tgt is freed before or
788 * inside wake_up()
789 */
790 spin_lock_irqsave(&ha->hardware_lock, flags);
791 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
792 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
793 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
794 res = (tgt->sess_count == 0);
795 spin_unlock_irqrestore(&ha->hardware_lock, flags);
796
797 return res;
798}
799
800/* Called by tcm_qla2xxx configfs code */
3c231bda 801int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 802{
803 struct scsi_qla_host *vha = tgt->vha;
804 struct qla_hw_data *ha = tgt->ha;
805 unsigned long flags;
806
3c231bda
NB		 807 mutex_lock(&qla_tgt_mutex);
808 if (!vha->fc_vport) {
809 struct Scsi_Host *sh = vha->host;
810 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
811 bool npiv_vports;
812
813 spin_lock_irqsave(sh->host_lock, flags);
814 npiv_vports = (fc_host->npiv_vports_inuse);
815 spin_unlock_irqrestore(sh->host_lock, flags);
816
817 if (npiv_vports) {
818 mutex_unlock(&qla_tgt_mutex);
819 return -EPERM;
820 }
821 }
2d70c103
NB		 822 if (tgt->tgt_stop || tgt->tgt_stopped) {
823 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
824 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 825 mutex_unlock(&qla_tgt_mutex);
826 return -EPERM;
2d70c103
NB		 827 }
828
829 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
830 vha->host_no, vha);
831 /*
832 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
833 * Lock is needed, because we still can get an incoming packet.
834 */
0e8cd71c 835 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 836 spin_lock_irqsave(&ha->hardware_lock, flags);
837 tgt->tgt_stop = 1;
838 qlt_clear_tgt_db(tgt, true);
839 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 840 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 841 mutex_unlock(&qla_tgt_mutex);
2d70c103 842
43829731 843 flush_delayed_work(&tgt->sess_del_work);
2d70c103
NB		 844
845 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
846 "Waiting for sess works (tgt %p)", tgt);
847 spin_lock_irqsave(&tgt->sess_work_lock, flags);
848 while (!list_empty(&tgt->sess_works_list)) {
849 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
850 flush_scheduled_work();
851 spin_lock_irqsave(&tgt->sess_work_lock, flags);
852 }
853 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
854
855 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
856 "Waiting for tgt %p: list_empty(sess_list)=%d "
857 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
858 tgt->sess_count);
859
860 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
861
862 /* Big hammer */
863 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
864 qlt_disable_vha(vha);
865
866 /* Wait for sessions to clear out (just in case) */
867 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 868 return 0;
2d70c103
NB		 869}
870EXPORT_SYMBOL(qlt_stop_phase1);
871
872/* Called by tcm_qla2xxx configfs code */
873void qlt_stop_phase2(struct qla_tgt *tgt)
874{
875 struct qla_hw_data *ha = tgt->ha;
0e8cd71c 876 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 877 unsigned long flags;
878
879 if (tgt->tgt_stopped) {
0e8cd71c 880 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 881 "Already in tgt->tgt_stopped state\n");
882 dump_stack();
883 return;
884 }
885
0e8cd71c 886 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
2d70c103
NB		 887 "Waiting for %d IRQ commands to complete (tgt %p)",
888 tgt->irq_cmd_count, tgt);
889
0e8cd71c 890 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 891 spin_lock_irqsave(&ha->hardware_lock, flags);
892 while (tgt->irq_cmd_count != 0) {
893 spin_unlock_irqrestore(&ha->hardware_lock, flags);
894 udelay(2);
895 spin_lock_irqsave(&ha->hardware_lock, flags);
896 }
897 tgt->tgt_stop = 0;
898 tgt->tgt_stopped = 1;
899 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 900 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 901
0e8cd71c 902 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
2d70c103
NB		 903 tgt);
904}
905EXPORT_SYMBOL(qlt_stop_phase2);
906
907/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 908static void qlt_release(struct qla_tgt *tgt)
2d70c103 909{
0e8cd71c 910 scsi_qla_host_t *vha = tgt->vha;
2d70c103 911
0e8cd71c 912 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 913 qlt_stop_phase2(tgt);
914
0e8cd71c 915 vha->vha_tgt.qla_tgt = NULL;
2d70c103 916
0e8cd71c 917 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 918 "Release of tgt %p finished\n", tgt);
919
920 kfree(tgt);
921}
922
923/* ha->hardware_lock supposed to be held on entry */
924static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
925 const void *param, unsigned int param_size)
926{
927 struct qla_tgt_sess_work_param *prm;
928 unsigned long flags;
929
930 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
931 if (!prm) {
932 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
933 "qla_target(%d): Unable to create session "
934 "work, command will be refused", 0);
935 return -ENOMEM;
936 }
937
938 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
939 "Scheduling work (type %d, prm %p)"
940 " to find session for param %p (size %d, tgt %p)\n",
941 type, prm, param, param_size, tgt);
942
943 prm->type = type;
944 memcpy(&prm->tm_iocb, param, param_size);
945
946 spin_lock_irqsave(&tgt->sess_work_lock, flags);
947 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
948 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
949
950 schedule_work(&tgt->sess_work);
951
952 return 0;
953}
954
955/*
956 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
957 */
958static void qlt_send_notify_ack(struct scsi_qla_host *vha,
959 struct imm_ntfy_from_isp *ntfy,
960 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
961 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
962{
963 struct qla_hw_data *ha = vha->hw;
964 request_t *pkt;
965 struct nack_to_isp *nack;
966
967 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
968
969 /* Send marker if required */
970 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
971 return;
972
973 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
974 if (!pkt) {
975 ql_dbg(ql_dbg_tgt, vha, 0xe049,
976 "qla_target(%d): %s failed: unable to allocate "
977 "request packet\n", vha->vp_idx, __func__);
978 return;
979 }
980
0e8cd71c
SK		 981 if (vha->vha_tgt.qla_tgt != NULL)
982 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 983
984 pkt->entry_type = NOTIFY_ACK_TYPE;
985 pkt->entry_count = 1;
986
987 nack = (struct nack_to_isp *)pkt;
988 nack->ox_id = ntfy->ox_id;
989
990 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
991 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
992 nack->u.isp24.flags = ntfy->u.isp24.flags &
993 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
994 }
995 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
996 nack->u.isp24.status = ntfy->u.isp24.status;
997 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 998 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 999 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1000 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1001 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1002 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1003 nack->u.isp24.srr_reject_code = srr_reject_code;
1004 nack->u.isp24.srr_reject_code_expl = srr_explan;
1005 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1006
1007 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1008 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1009 vha->vp_idx, nack->u.isp24.status);
1010
1011 qla2x00_start_iocbs(vha, vha->req);
1012}
1013
1014/*
1015 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1016 */
1017static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1018 struct abts_recv_from_24xx *abts, uint32_t status,
1019 bool ids_reversed)
1020{
1021 struct qla_hw_data *ha = vha->hw;
1022 struct abts_resp_to_24xx *resp;
1023 uint32_t f_ctl;
1024 uint8_t *p;
1025
1026 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1027 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1028 ha, abts, status);
1029
1030 /* Send marker if required */
1031 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1032 return;
1033
1034 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1035 if (!resp) {
1036 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1037 "qla_target(%d): %s failed: unable to allocate "
1038 "request packet", vha->vp_idx, __func__);
1039 return;
1040 }
1041
1042 resp->entry_type = ABTS_RESP_24XX;
1043 resp->entry_count = 1;
1044 resp->nport_handle = abts->nport_handle;
1045 resp->vp_index = vha->vp_idx;
1046 resp->sof_type = abts->sof_type;
1047 resp->exchange_address = abts->exchange_address;
1048 resp->fcp_hdr_le = abts->fcp_hdr_le;
1049 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1050 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1051 F_CTL_SEQ_INITIATIVE);
1052 p = (uint8_t *)&f_ctl;
1053 resp->fcp_hdr_le.f_ctl[0] = *p++;
1054 resp->fcp_hdr_le.f_ctl[1] = *p++;
1055 resp->fcp_hdr_le.f_ctl[2] = *p;
1056 if (ids_reversed) {
1057 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1058 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1059 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1060 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1061 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1062 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1063 } else {
1064 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1065 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1066 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1067 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1068 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1069 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1070 }
1071 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1072 if (status == FCP_TMF_CMPL) {
1073 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1074 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1075 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1076 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1077 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1078 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1079 } else {
1080 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1081 resp->payload.ba_rjt.reason_code =
1082 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1083 /* Other bytes are zero */
1084 }
1085
0e8cd71c 1086 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103
NB		 1087
1088 qla2x00_start_iocbs(vha, vha->req);
1089}
1090
1091/*
1092 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1093 */
1094static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1095 struct abts_resp_from_24xx_fw *entry)
1096{
1097 struct ctio7_to_24xx *ctio;
1098
1099 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1100 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1101 /* Send marker if required */
1102 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1103 return;
1104
1105 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1106 if (ctio == NULL) {
1107 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1108 "qla_target(%d): %s failed: unable to allocate "
1109 "request packet\n", vha->vp_idx, __func__);
1110 return;
1111 }
1112
1113 /*
1114 * We've got on entrance firmware's response on by us generated
1115 * ABTS response. So, in it ID fields are reversed.
1116 */
1117
1118 ctio->entry_type = CTIO_TYPE7;
1119 ctio->entry_count = 1;
1120 ctio->nport_handle = entry->nport_handle;
1121 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1122 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1123 ctio->vp_index = vha->vp_idx;
1124 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1125 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1126 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1127 ctio->exchange_addr = entry->exchange_addr_to_abort;
1128 ctio->u.status1.flags =
1129 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1130 CTIO7_FLAGS_TERMINATE);
33a5fcee 1131 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103
NB		 1132
1133 qla2x00_start_iocbs(vha, vha->req);
1134
1135 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1136 FCP_TMF_CMPL, true);
1137}
1138
1139/* ha->hardware_lock supposed to be held on entry */
1140static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1141 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1142{
1143 struct qla_hw_data *ha = vha->hw;
06e97b48 1144 struct se_session *se_sess = sess->se_sess;
2d70c103 1145 struct qla_tgt_mgmt_cmd *mcmd;
06e97b48
SH		 1146 struct se_cmd *se_cmd;
1147 u32 lun = 0;
2d70c103 1148 int rc;
06e97b48
SH		 1149 bool found_lun = false;
1150
1151 spin_lock(&se_sess->sess_cmd_lock);
1152 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1153 struct qla_tgt_cmd *cmd =
1154 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1155 if (cmd->tag == abts->exchange_addr_to_abort) {
1156 lun = cmd->unpacked_lun;
1157 found_lun = true;
1158 break;
1159 }
1160 }
1161 spin_unlock(&se_sess->sess_cmd_lock);
1162
1163 if (!found_lun)
1164 return -ENOENT;
2d70c103
NB		 1165
1166 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1167 "qla_target(%d): task abort (tag=%d)\n",
1168 vha->vp_idx, abts->exchange_addr_to_abort);
1169
1170 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1171 if (mcmd == NULL) {
1172 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1173 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1174 vha->vp_idx, __func__);
1175 return -ENOMEM;
1176 }
1177 memset(mcmd, 0, sizeof(*mcmd));
1178
1179 mcmd->sess = sess;
1180 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1181
06e97b48 1182 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
2d70c103
NB		 1183 abts->exchange_addr_to_abort);
1184 if (rc != 0) {
1185 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1186 "qla_target(%d): tgt_ops->handle_tmr()"
1187 " failed: %d", vha->vp_idx, rc);
1188 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1189 return -EFAULT;
1190 }
1191
1192 return 0;
1193}
1194
1195/*
1196 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1197 */
1198static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1199 struct abts_recv_from_24xx *abts)
1200{
1201 struct qla_hw_data *ha = vha->hw;
1202 struct qla_tgt_sess *sess;
1203 uint32_t tag = abts->exchange_addr_to_abort;
1204 uint8_t s_id[3];
1205 int rc;
1206
1207 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1208 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1209 "qla_target(%d): ABTS: Abort Sequence not "
1210 "supported\n", vha->vp_idx);
1211 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1212 return;
1213 }
1214
1215 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1216 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1217 "qla_target(%d): ABTS: Unknown Exchange "
1218 "Address received\n", vha->vp_idx);
1219 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1220 return;
1221 }
1222
1223 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1224 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1225 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1226 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1227 le32_to_cpu(abts->fcp_hdr_le.parameter));
1228
1229 s_id[0] = abts->fcp_hdr_le.s_id[2];
1230 s_id[1] = abts->fcp_hdr_le.s_id[1];
1231 s_id[2] = abts->fcp_hdr_le.s_id[0];
1232
1233 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1234 if (!sess) {
1235 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1236 "qla_target(%d): task abort for non-existant session\n",
1237 vha->vp_idx);
0e8cd71c 1238 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 1239 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1240 if (rc != 0) {
1241 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1242 false);
1243 }
1244 return;
1245 }
1246
1247 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1248 if (rc != 0) {
1249 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1250 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1251 vha->vp_idx, rc);
1252 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1253 return;
1254 }
1255}
1256
1257/*
1258 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1259 */
1260static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1261 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1262{
1263 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1264 struct ctio7_to_24xx *ctio;
33a5fcee 1265 uint16_t temp;
2d70c103
NB		 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);
33a5fcee
QT		 1296 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1297 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 1298 ctio->u.status1.scsi_status =
1299 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1300 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
e4b11b89 1301 ctio->u.status1.sense_data[0] = resp_code;
2d70c103
NB		 1302
1303 qla2x00_start_iocbs(ha, ha->req);
1304}
1305
1306void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1307{
1308 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1309}
1310EXPORT_SYMBOL(qlt_free_mcmd);
1311
1312/* callback from target fabric module code */
1313void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1314{
1315 struct scsi_qla_host *vha = mcmd->sess->vha;
1316 struct qla_hw_data *ha = vha->hw;
1317 unsigned long flags;
1318
1319 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1320 "TM response mcmd (%p) status %#x state %#x",
1321 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1322
1323 spin_lock_irqsave(&ha->hardware_lock, flags);
1324 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1325 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1326 0, 0, 0, 0, 0, 0);
1327 else {
1328 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1329 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1330 mcmd->fc_tm_rsp, false);
1331 else
1332 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1333 mcmd->fc_tm_rsp);
1334 }
1335 /*
1336 * Make the callback for ->free_mcmd() to queue_work() and invoke
1337 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1338 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1339 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1340 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1341 * qlt_xmit_tm_rsp() returns here..
1342 */
1343 ha->tgt.tgt_ops->free_mcmd(mcmd);
1344 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1345}
1346EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1347
1348/* No locks */
1349static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1350{
1351 struct qla_tgt_cmd *cmd = prm->cmd;
1352
1353 BUG_ON(cmd->sg_cnt == 0);
1354
1355 prm->sg = (struct scatterlist *)cmd->sg;
1356 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1357 cmd->sg_cnt, cmd->dma_data_direction);
1358 if (unlikely(prm->seg_cnt == 0))
1359 goto out_err;
1360
1361 prm->cmd->sg_mapped = 1;
1362
f83adb61
QT		 1363 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1364 /*
1365 * If greater than four sg entries then we need to allocate
1366 * the continuation entries
1367 */
1368 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1369 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1370 prm->tgt->datasegs_per_cmd,
1371 prm->tgt->datasegs_per_cont);
1372 } else {
1373 /* DIF */
1374 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1375 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1376 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1377 prm->tot_dsds = prm->seg_cnt;
1378 } else
1379 prm->tot_dsds = prm->seg_cnt;
1380
1381 if (cmd->prot_sg_cnt) {
1382 prm->prot_sg = cmd->prot_sg;
1383 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1384 cmd->prot_sg, cmd->prot_sg_cnt,
1385 cmd->dma_data_direction);
1386 if (unlikely(prm->prot_seg_cnt == 0))
1387 goto out_err;
1388
1389 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1390 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1391 /* Dif Bundling not support here */
1392 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1393 cmd->blk_sz);
1394 prm->tot_dsds += prm->prot_seg_cnt;
1395 } else
1396 prm->tot_dsds += prm->prot_seg_cnt;
1397 }
1398 }
2d70c103
NB		 1399
1400 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
1401 prm->seg_cnt, prm->req_cnt);
1402 return 0;
1403
1404out_err:
1405 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1406 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1407 0, prm->cmd->sg_cnt);
1408 return -1;
1409}
1410
1411static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
1412 struct qla_tgt_cmd *cmd)
1413{
1414 struct qla_hw_data *ha = vha->hw;
1415
1416 BUG_ON(!cmd->sg_mapped);
1417 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1418 cmd->sg_mapped = 0;
f83adb61
QT		 1419
1420 if (cmd->prot_sg_cnt)
1421 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1422 cmd->dma_data_direction);
1423
1424 if (cmd->ctx_dsd_alloced)
1425 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1426
1427 if (cmd->ctx)
1428 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 1429}
1430
1431static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1432 uint32_t req_cnt)
1433{
1434 struct qla_hw_data *ha = vha->hw;
1435 device_reg_t __iomem *reg = ha->iobase;
1436 uint32_t cnt;
1437
1438 if (vha->req->cnt < (req_cnt + 2)) {
1439 cnt = (uint16_t)RD_REG_DWORD(&reg->isp24.req_q_out);
1440
1441 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
1442 "Request ring circled: cnt=%d, vha->->ring_index=%d, "
1443 "vha->req->cnt=%d, req_cnt=%d\n", cnt,
1444 vha->req->ring_index, vha->req->cnt, req_cnt);
1445 if (vha->req->ring_index < cnt)
1446 vha->req->cnt = cnt - vha->req->ring_index;
1447 else
1448 vha->req->cnt = vha->req->length -
1449 (vha->req->ring_index - cnt);
1450 }
1451
1452 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1453 ql_dbg(ql_dbg_tgt, vha, 0xe00b,
1454 "qla_target(%d): There is no room in the "
1455 "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
1456 "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
1457 vha->req->cnt, req_cnt);
1458 return -EAGAIN;
1459 }
1460 vha->req->cnt -= req_cnt;
1461
1462 return 0;
1463}
1464
1465/*
1466 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1467 */
1468static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1469{
1470 /* Adjust ring index. */
1471 vha->req->ring_index++;
1472 if (vha->req->ring_index == vha->req->length) {
1473 vha->req->ring_index = 0;
1474 vha->req->ring_ptr = vha->req->ring;
1475 } else {
1476 vha->req->ring_ptr++;
1477 }
1478 return (cont_entry_t *)vha->req->ring_ptr;
1479}
1480
1481/* ha->hardware_lock supposed to be held on entry */
1482static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1483{
1484 struct qla_hw_data *ha = vha->hw;
1485 uint32_t h;
1486
1487 h = ha->tgt.current_handle;
1488 /* always increment cmd handle */
1489 do {
1490 ++h;
8d93f550 1491 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 1492 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1493 if (h == ha->tgt.current_handle) {
1494 ql_dbg(ql_dbg_tgt, vha, 0xe04e,
1495 "qla_target(%d): Ran out of "
1496 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1497 h = QLA_TGT_NULL_HANDLE;
1498 break;
1499 }
1500 } while ((h == QLA_TGT_NULL_HANDLE) ||
1501 (h == QLA_TGT_SKIP_HANDLE) ||
1502 (ha->tgt.cmds[h-1] != NULL));
1503
1504 if (h != QLA_TGT_NULL_HANDLE)
1505 ha->tgt.current_handle = h;
1506
1507 return h;
1508}
1509
1510/* ha->hardware_lock supposed to be held on entry */
1511static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1512 struct scsi_qla_host *vha)
1513{
1514 uint32_t h;
1515 struct ctio7_to_24xx *pkt;
1516 struct qla_hw_data *ha = vha->hw;
1517 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 1518 uint16_t temp;
2d70c103
NB		 1519
1520 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1521 prm->pkt = pkt;
1522 memset(pkt, 0, sizeof(*pkt));
1523
1524 pkt->entry_type = CTIO_TYPE7;
1525 pkt->entry_count = (uint8_t)prm->req_cnt;
1526 pkt->vp_index = vha->vp_idx;
1527
1528 h = qlt_make_handle(vha);
1529 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1530 /*
1531 * CTIO type 7 from the firmware doesn't provide a way to
1532 * know the initiator's LOOP ID, hence we can't find
1533 * the session and, so, the command.
1534 */
1535 return -EAGAIN;
1536 } else
1537 ha->tgt.cmds[h-1] = prm->cmd;
1538
1539 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1540 pkt->nport_handle = prm->cmd->loop_id;
1541 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1542 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1543 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1544 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1545 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1546 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
33a5fcee
QT		 1547 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1548 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 1549 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1550
1551 ql_dbg(ql_dbg_tgt, vha, 0xe00c,
1552 "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
33a5fcee 1553 vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT, temp);
2d70c103
NB		 1554 return 0;
1555}
1556
1557/*
1558 * ha->hardware_lock supposed to be held on entry. We have already made sure
1559 * that there is sufficient amount of request entries to not drop it.
1560 */
1561static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1562 struct scsi_qla_host *vha)
1563{
1564 int cnt;
1565 uint32_t *dword_ptr;
1566 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1567
1568 /* Build continuation packets */
1569 while (prm->seg_cnt > 0) {
1570 cont_a64_entry_t *cont_pkt64 =
1571 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1572
1573 /*
1574 * Make sure that from cont_pkt64 none of
1575 * 64-bit specific fields used for 32-bit
1576 * addressing. Cast to (cont_entry_t *) for
1577 * that.
1578 */
1579
1580 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1581
1582 cont_pkt64->entry_count = 1;
1583 cont_pkt64->sys_define = 0;
1584
1585 if (enable_64bit_addressing) {
1586 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1587 dword_ptr =
1588 (uint32_t *)&cont_pkt64->dseg_0_address;
1589 } else {
1590 cont_pkt64->entry_type = CONTINUE_TYPE;
1591 dword_ptr =
1592 (uint32_t *)&((cont_entry_t *)
1593 cont_pkt64)->dseg_0_address;
1594 }
1595
1596 /* Load continuation entry data segments */
1597 for (cnt = 0;
1598 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1599 cnt++, prm->seg_cnt--) {
1600 *dword_ptr++ =
1601 cpu_to_le32(pci_dma_lo32
1602 (sg_dma_address(prm->sg)));
1603 if (enable_64bit_addressing) {
1604 *dword_ptr++ =
1605 cpu_to_le32(pci_dma_hi32
1606 (sg_dma_address
1607 (prm->sg)));
1608 }
1609 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1610
1611 ql_dbg(ql_dbg_tgt, vha, 0xe00d,
1612 "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
1613 (long long unsigned int)
1614 pci_dma_hi32(sg_dma_address(prm->sg)),
1615 (long long unsigned int)
1616 pci_dma_lo32(sg_dma_address(prm->sg)),
1617 (int)sg_dma_len(prm->sg));
1618
1619 prm->sg = sg_next(prm->sg);
1620 }
1621 }
1622}
1623
1624/*
1625 * ha->hardware_lock supposed to be held on entry. We have already made sure
1626 * that there is sufficient amount of request entries to not drop it.
1627 */
1628static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1629 struct scsi_qla_host *vha)
1630{
1631 int cnt;
1632 uint32_t *dword_ptr;
1633 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1634 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1635
1636 ql_dbg(ql_dbg_tgt, vha, 0xe00e,
1637 "iocb->scsi_status=%x, iocb->flags=%x\n",
1638 le16_to_cpu(pkt24->u.status0.scsi_status),
1639 le16_to_cpu(pkt24->u.status0.flags));
1640
1641 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1642
1643 /* Setup packet address segment pointer */
1644 dword_ptr = pkt24->u.status0.dseg_0_address;
1645
1646 /* Set total data segment count */
1647 if (prm->seg_cnt)
1648 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1649
1650 if (prm->seg_cnt == 0) {
1651 /* No data transfer */
1652 *dword_ptr++ = 0;
1653 *dword_ptr = 0;
1654 return;
1655 }
1656
1657 /* If scatter gather */
1658 ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
1659
1660 /* Load command entry data segments */
1661 for (cnt = 0;
1662 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1663 cnt++, prm->seg_cnt--) {
1664 *dword_ptr++ =
1665 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1666 if (enable_64bit_addressing) {
1667 *dword_ptr++ =
1668 cpu_to_le32(pci_dma_hi32(
1669 sg_dma_address(prm->sg)));
1670 }
1671 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1672
1673 ql_dbg(ql_dbg_tgt, vha, 0xe010,
1674 "S/G Segment phys_addr=%llx:%llx, len=%d\n",
1675 (long long unsigned int)pci_dma_hi32(sg_dma_address(
1676 prm->sg)),
1677 (long long unsigned int)pci_dma_lo32(sg_dma_address(
1678 prm->sg)),
1679 (int)sg_dma_len(prm->sg));
1680
1681 prm->sg = sg_next(prm->sg);
1682 }
1683
1684 qlt_load_cont_data_segments(prm, vha);
1685}
1686
1687static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1688{
1689 return cmd->bufflen > 0;
1690}
1691
1692/*
1693 * Called without ha->hardware_lock held
1694 */
1695static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1696 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1697 uint32_t *full_req_cnt)
1698{
1699 struct qla_tgt *tgt = cmd->tgt;
1700 struct scsi_qla_host *vha = tgt->vha;
1701 struct qla_hw_data *ha = vha->hw;
1702 struct se_cmd *se_cmd = &cmd->se_cmd;
1703
1704 if (unlikely(cmd->aborted)) {
1705 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1706 "qla_target(%d): terminating exchange "
1707 "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
1708 se_cmd, cmd->tag);
1709
1710 cmd->state = QLA_TGT_STATE_ABORTED;
1711
1712 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1713
1714 /* !! At this point cmd could be already freed !! */
1715 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1716 }
1717
f83adb61
QT		 1718 ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u ox_id %04x\n",
1719 vha->vp_idx, cmd->tag,
1720 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103
NB		 1721
1722 prm->cmd = cmd;
1723 prm->tgt = tgt;
1724 prm->rq_result = scsi_status;
1725 prm->sense_buffer = &cmd->sense_buffer[0];
1726 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1727 prm->sg = NULL;
1728 prm->seg_cnt = -1;
1729 prm->req_cnt = 1;
1730 prm->add_status_pkt = 0;
1731
1732 ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
1733 prm->rq_result, xmit_type);
1734
1735 /* Send marker if required */
1736 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1737 return -EFAULT;
1738
1739 ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
1740
1741 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1742 if (qlt_pci_map_calc_cnt(prm) != 0)
1743 return -EAGAIN;
1744 }
1745
1746 *full_req_cnt = prm->req_cnt;
1747
1748 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1749 prm->residual = se_cmd->residual_count;
1750 ql_dbg(ql_dbg_tgt, vha, 0xe014,
1751 "Residual underflow: %d (tag %d, "
1752 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1753 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1754 cmd->bufflen, prm->rq_result);
1755 prm->rq_result |= SS_RESIDUAL_UNDER;
1756 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1757 prm->residual = se_cmd->residual_count;
1758 ql_dbg(ql_dbg_tgt, vha, 0xe015,
1759 "Residual overflow: %d (tag %d, "
1760 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1761 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1762 cmd->bufflen, prm->rq_result);
1763 prm->rq_result |= SS_RESIDUAL_OVER;
1764 }
1765
1766 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1767 /*
1768 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1769 * ignored in *xmit_response() below
1770 */
1771 if (qlt_has_data(cmd)) {
1772 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1773 (IS_FWI2_CAPABLE(ha) &&
1774 (prm->rq_result != 0))) {
1775 prm->add_status_pkt = 1;
1776 (*full_req_cnt)++;
1777 }
1778 }
1779 }
1780
1781 ql_dbg(ql_dbg_tgt, vha, 0xe016,
1782 "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
1783 prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
1784
1785 return 0;
1786}
1787
1788static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1789 struct qla_tgt_cmd *cmd, int sending_sense)
1790{
1791 if (ha->tgt.enable_class_2)
1792 return 0;
1793
1794 if (sending_sense)
1795 return cmd->conf_compl_supported;
1796 else
1797 return ha->tgt.enable_explicit_conf &&
1798 cmd->conf_compl_supported;
1799}
1800
1801#ifdef CONFIG_QLA_TGT_DEBUG_SRR
1802/*
1803 * Original taken from the XFS code
1804 */
1805static unsigned long qlt_srr_random(void)
1806{
1807 static int Inited;
1808 static unsigned long RandomValue;
1809 static DEFINE_SPINLOCK(lock);
1810 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1811 register long rv;
1812 register long lo;
1813 register long hi;
1814 unsigned long flags;
1815
1816 spin_lock_irqsave(&lock, flags);
1817 if (!Inited) {
1818 RandomValue = jiffies;
1819 Inited = 1;
1820 }
1821 rv = RandomValue;
1822 hi = rv / 127773;
1823 lo = rv % 127773;
1824 rv = 16807 * lo - 2836 * hi;
1825 if (rv <= 0)
1826 rv += 2147483647;
1827 RandomValue = rv;
1828 spin_unlock_irqrestore(&lock, flags);
1829 return rv;
1830}
1831
1832static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1833{
1834#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1835 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1836 == 50) {
1837 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1838 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1839 "Dropping cmd %p (tag %d) status", cmd, cmd->tag);
1840 }
1841#endif
1842 /*
1843 * It's currently not possible to simulate SRRs for FCP_WRITE without
1844 * a physical link layer failure, so don't even try here..
1845 */
1846 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1847 return;
1848
1849 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1850 ((qlt_srr_random() % 100) == 20)) {
1851 int i, leave = 0;
1852 unsigned int tot_len = 0;
1853
1854 while (leave == 0)
1855 leave = qlt_srr_random() % cmd->sg_cnt;
1856
1857 for (i = 0; i < leave; i++)
1858 tot_len += cmd->sg[i].length;
1859
1860 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1861 "Cutting cmd %p (tag %d) buffer"
1862 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1863 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
1864 cmd->bufflen, cmd->sg_cnt);
1865
1866 cmd->bufflen = tot_len;
1867 cmd->sg_cnt = leave;
1868 }
1869
1870 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1871 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1872
1873 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1874 "Cutting cmd %p (tag %d) buffer head "
1875 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
1876 cmd->bufflen);
1877 if (offset == 0)
1878 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1879 else if (qlt_set_data_offset(cmd, offset)) {
1880 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1881 "qlt_set_data_offset() failed (tag %d)", cmd->tag);
1882 }
1883 }
1884}
1885#else
1886static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1887{}
1888#endif
1889
1890static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1891 struct qla_tgt_prm *prm)
1892{
1893 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1894 (uint32_t)sizeof(ctio->u.status1.sense_data));
1895 ctio->u.status0.flags |=
1896 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1897 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1898 ctio->u.status0.flags |= __constant_cpu_to_le16(
1899 CTIO7_FLAGS_EXPLICIT_CONFORM |
1900 CTIO7_FLAGS_CONFORM_REQ);
1901 }
1902 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1903 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1904 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1905 int i;
1906
1907 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1908 if (prm->cmd->se_cmd.scsi_status != 0) {
1909 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1910 "Skipping EXPLICIT_CONFORM and "
1911 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1912 "non GOOD status\n");
1913 goto skip_explict_conf;
1914 }
1915 ctio->u.status1.flags |= __constant_cpu_to_le16(
1916 CTIO7_FLAGS_EXPLICIT_CONFORM |
1917 CTIO7_FLAGS_CONFORM_REQ);
1918 }
1919skip_explict_conf:
1920 ctio->u.status1.flags &=
1921 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1922 ctio->u.status1.flags |=
1923 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1924 ctio->u.status1.scsi_status |=
1925 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1926 ctio->u.status1.sense_length =
1927 cpu_to_le16(prm->sense_buffer_len);
1928 for (i = 0; i < prm->sense_buffer_len/4; i++)
1929 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1930 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1931#if 0
1932 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
1933 static int q;
1934 if (q < 10) {
1935 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
1936 "qla_target(%d): %d bytes of sense "
1937 "lost", prm->tgt->ha->vp_idx,
1938 prm->sense_buffer_len % 4);
1939 q++;
1940 }
1941 }
1942#endif
1943 } else {
1944 ctio->u.status1.flags &=
1945 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1946 ctio->u.status1.flags |=
1947 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1948 ctio->u.status1.sense_length = 0;
1949 memset(ctio->u.status1.sense_data, 0,
1950 sizeof(ctio->u.status1.sense_data));
1951 }
1952
1953 /* Sense with len > 24, is it possible ??? */
1954}
1955
f83adb61
QT		 1956
1957
1958/* diff */
1959static inline int
1960qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
1961{
1962 /*
1963 * Uncomment when corresponding SCSI changes are done.
1964 *
1965 if (!sp->cmd->prot_chk)
1966 return 0;
1967 *
1968 */
1969 switch (se_cmd->prot_op) {
1970 case TARGET_PROT_DOUT_INSERT:
1971 case TARGET_PROT_DIN_STRIP:
1972 if (ql2xenablehba_err_chk >= 1)
1973 return 1;
1974 break;
1975 case TARGET_PROT_DOUT_PASS:
1976 case TARGET_PROT_DIN_PASS:
1977 if (ql2xenablehba_err_chk >= 2)
1978 return 1;
1979 break;
1980 case TARGET_PROT_DIN_INSERT:
1981 case TARGET_PROT_DOUT_STRIP:
1982 return 1;
1983 default:
1984 break;
1985 }
1986 return 0;
1987}
1988
1989/*
1990 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
1991 *
1992 */
1993static inline void
1994qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
1995{
1996 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
1997
1998 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
1999 * have been immplemented by TCM, before AppTag is avail.
2000 * Look for modesense_handlers[]
2001 */
c7ee3bd4 2002 ctx->app_tag = 0;
f83adb61
QT		 2003 ctx->app_tag_mask[0] = 0x0;
2004 ctx->app_tag_mask[1] = 0x0;
2005
2006 switch (se_cmd->prot_type) {
2007 case TARGET_DIF_TYPE0_PROT:
2008 /*
2009 * No check for ql2xenablehba_err_chk, as it would be an
2010 * I/O error if hba tag generation is not done.
2011 */
2012 ctx->ref_tag = cpu_to_le32(lba);
2013
2014 if (!qlt_hba_err_chk_enabled(se_cmd))
2015 break;
2016
2017 /* enable ALL bytes of the ref tag */
2018 ctx->ref_tag_mask[0] = 0xff;
2019 ctx->ref_tag_mask[1] = 0xff;
2020 ctx->ref_tag_mask[2] = 0xff;
2021 ctx->ref_tag_mask[3] = 0xff;
2022 break;
2023 /*
2024 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2025 * 16 bit app tag.
2026 */
2027 case TARGET_DIF_TYPE1_PROT:
2028 ctx->ref_tag = cpu_to_le32(lba);
2029
2030 if (!qlt_hba_err_chk_enabled(se_cmd))
2031 break;
2032
2033 /* enable ALL bytes of the ref tag */
2034 ctx->ref_tag_mask[0] = 0xff;
2035 ctx->ref_tag_mask[1] = 0xff;
2036 ctx->ref_tag_mask[2] = 0xff;
2037 ctx->ref_tag_mask[3] = 0xff;
2038 break;
2039 /*
2040 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2041 * match LBA in CDB + N
2042 */
2043 case TARGET_DIF_TYPE2_PROT:
2044 ctx->ref_tag = cpu_to_le32(lba);
2045
2046 if (!qlt_hba_err_chk_enabled(se_cmd))
2047 break;
2048
2049 /* enable ALL bytes of the ref tag */
2050 ctx->ref_tag_mask[0] = 0xff;
2051 ctx->ref_tag_mask[1] = 0xff;
2052 ctx->ref_tag_mask[2] = 0xff;
2053 ctx->ref_tag_mask[3] = 0xff;
2054 break;
2055
2056 /* For Type 3 protection: 16 bit GUARD only */
2057 case TARGET_DIF_TYPE3_PROT:
2058 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2059 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2060 break;
2061 }
2062}
2063
2064
2065static inline int
2066qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2067{
2068 uint32_t *cur_dsd;
2069 int sgc;
2070 uint32_t transfer_length = 0;
2071 uint32_t data_bytes;
2072 uint32_t dif_bytes;
2073 uint8_t bundling = 1;
2074 uint8_t *clr_ptr;
2075 struct crc_context *crc_ctx_pkt = NULL;
2076 struct qla_hw_data *ha;
2077 struct ctio_crc2_to_fw *pkt;
2078 dma_addr_t crc_ctx_dma;
2079 uint16_t fw_prot_opts = 0;
2080 struct qla_tgt_cmd *cmd = prm->cmd;
2081 struct se_cmd *se_cmd = &cmd->se_cmd;
2082 uint32_t h;
2083 struct atio_from_isp *atio = &prm->cmd->atio;
c7ee3bd4 2084 uint16_t t16;
f83adb61
QT		 2085
2086 sgc = 0;
2087 ha = vha->hw;
2088
2089 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2090 prm->pkt = pkt;
2091 memset(pkt, 0, sizeof(*pkt));
2092
2093 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2094 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2095 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2096 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2097
2098 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2099 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2100 bundling = 0;
2101
2102 /* Compute dif len and adjust data len to incude protection */
2103 data_bytes = cmd->bufflen;
2104 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2105
2106 switch (se_cmd->prot_op) {
2107 case TARGET_PROT_DIN_INSERT:
2108 case TARGET_PROT_DOUT_STRIP:
2109 transfer_length = data_bytes;
2110 data_bytes += dif_bytes;
2111 break;
2112
2113 case TARGET_PROT_DIN_STRIP:
2114 case TARGET_PROT_DOUT_INSERT:
2115 case TARGET_PROT_DIN_PASS:
2116 case TARGET_PROT_DOUT_PASS:
2117 transfer_length = data_bytes + dif_bytes;
2118 break;
2119
2120 default:
2121 BUG();
2122 break;
2123 }
2124
2125 if (!qlt_hba_err_chk_enabled(se_cmd))
2126 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2127 /* HBA error checking enabled */
2128 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2129 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2130 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2131 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2132 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2133 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2134 }
2135
2136 switch (se_cmd->prot_op) {
2137 case TARGET_PROT_DIN_INSERT:
2138 case TARGET_PROT_DOUT_INSERT:
2139 fw_prot_opts |= PO_MODE_DIF_INSERT;
2140 break;
2141 case TARGET_PROT_DIN_STRIP:
2142 case TARGET_PROT_DOUT_STRIP:
2143 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2144 break;
2145 case TARGET_PROT_DIN_PASS:
2146 case TARGET_PROT_DOUT_PASS:
2147 fw_prot_opts |= PO_MODE_DIF_PASS;
2148 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2149 break;
2150 default:/* Normal Request */
2151 fw_prot_opts |= PO_MODE_DIF_PASS;
2152 break;
2153 }
2154
2155
2156 /* ---- PKT ---- */
2157 /* Update entry type to indicate Command Type CRC_2 IOCB */
2158 pkt->entry_type = CTIO_CRC2;
2159 pkt->entry_count = 1;
2160 pkt->vp_index = vha->vp_idx;
2161
2162 h = qlt_make_handle(vha);
2163 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2164 /*
2165 * CTIO type 7 from the firmware doesn't provide a way to
2166 * know the initiator's LOOP ID, hence we can't find
2167 * the session and, so, the command.
2168 */
2169 return -EAGAIN;
2170 } else
2171 ha->tgt.cmds[h-1] = prm->cmd;
2172
2173
2174 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2175 pkt->nport_handle = prm->cmd->loop_id;
2176 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2177 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2178 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2179 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2180 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2181
2182 /* silence compile warning */
2183 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2184 pkt->ox_id = cpu_to_le16(t16);
2185
2186 t16 = (atio->u.isp24.attr << 9);
2187 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2188 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2189
2190 /* Set transfer direction */
2191 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2192 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2193 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2194 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2195
2196
2197 pkt->dseg_count = prm->tot_dsds;
2198 /* Fibre channel byte count */
2199 pkt->transfer_length = cpu_to_le32(transfer_length);
2200
2201
2202 /* ----- CRC context -------- */
2203
2204 /* Allocate CRC context from global pool */
2205 crc_ctx_pkt = cmd->ctx =
2206 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2207
2208 if (!crc_ctx_pkt)
2209 goto crc_queuing_error;
2210
2211 /* Zero out CTX area. */
2212 clr_ptr = (uint8_t *)crc_ctx_pkt;
2213 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2214
2215 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2216 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2217
2218 /* Set handle */
2219 crc_ctx_pkt->handle = pkt->handle;
2220
2221 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2222
2223 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2224 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2225 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2226
2227
2228 if (!bundling) {
2229 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2230 } else {
2231 /*
2232 * Configure Bundling if we need to fetch interlaving
2233 * protection PCI accesses
2234 */
2235 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2236 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2237 crc_ctx_pkt->u.bundling.dseg_count =
2238 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2239 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2240 }
2241
2242 /* Finish the common fields of CRC pkt */
2243 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2244 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2245 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
2246 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0);
2247
2248
2249 /* Walks data segments */
2250 pkt->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
2251
2252 if (!bundling && prm->prot_seg_cnt) {
2253 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2254 prm->tot_dsds, cmd))
2255 goto crc_queuing_error;
2256 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2257 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2258 goto crc_queuing_error;
2259
2260 if (bundling && prm->prot_seg_cnt) {
2261 /* Walks dif segments */
c7ee3bd4 2262 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2263
2264 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2265 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2266 prm->prot_seg_cnt, cmd))
2267 goto crc_queuing_error;
2268 }
2269 return QLA_SUCCESS;
2270
2271crc_queuing_error:
2272 /* Cleanup will be performed by the caller */
2273
2274 return QLA_FUNCTION_FAILED;
2275}
2276
2277
2d70c103
NB		 2278/*
2279 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2280 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2281 */
2282int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2283 uint8_t scsi_status)
2284{
2285 struct scsi_qla_host *vha = cmd->vha;
2286 struct qla_hw_data *ha = vha->hw;
2287 struct ctio7_to_24xx *pkt;
2288 struct qla_tgt_prm prm;
2289 uint32_t full_req_cnt = 0;
2290 unsigned long flags = 0;
2291 int res;
2292
2293 memset(&prm, 0, sizeof(prm));
2294 qlt_check_srr_debug(cmd, &xmit_type);
2295
2296 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 2297 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2298 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2299 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2300 &cmd->se_cmd);
2d70c103
NB		 2301
2302 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2303 &full_req_cnt);
2304 if (unlikely(res != 0)) {
2305 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
2306 return 0;
2307
2308 return res;
2309 }
2310
2311 spin_lock_irqsave(&ha->hardware_lock, flags);
2312
2313 /* Does F/W have an IOCBs for this request */
2314 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2315 if (unlikely(res))
2316 goto out_unmap_unlock;
2317
f83adb61
QT		 2318 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2319 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2320 else
2321 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103
NB		 2322 if (unlikely(res != 0))
2323 goto out_unmap_unlock;
2324
2325
2326 pkt = (struct ctio7_to_24xx *)prm.pkt;
2327
2328 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2329 pkt->u.status0.flags |=
2330 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2331 CTIO7_FLAGS_STATUS_MODE_0);
2332
f83adb61
QT		 2333 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2334 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2335
2336 if (prm.add_status_pkt == 0) {
2337 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2338 pkt->u.status0.scsi_status =
2339 cpu_to_le16(prm.rq_result);
2340 pkt->u.status0.residual =
2341 cpu_to_le32(prm.residual);
2342 pkt->u.status0.flags |= __constant_cpu_to_le16(
2343 CTIO7_FLAGS_SEND_STATUS);
2344 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2345 pkt->u.status0.flags |=
2346 __constant_cpu_to_le16(
2347 CTIO7_FLAGS_EXPLICIT_CONFORM |
2348 CTIO7_FLAGS_CONFORM_REQ);
2349 }
2350 }
2351
2352 } else {
2353 /*
2354 * We have already made sure that there is sufficient
2355 * amount of request entries to not drop HW lock in
2356 * req_pkt().
2357 */
2358 struct ctio7_to_24xx *ctio =
2359 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2360
2361 ql_dbg(ql_dbg_tgt, vha, 0xe019,
2362 "Building additional status packet\n");
2363
f83adb61
QT		 2364 /*
2365 * T10Dif: ctio_crc2_to_fw overlay ontop of
2366 * ctio7_to_24xx
2367 */
2d70c103 2368 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 2369 /* reset back to CTIO7 */
2d70c103 2370 ctio->entry_count = 1;
f83adb61 2371 ctio->entry_type = CTIO_TYPE7;
2d70c103
NB		 2372 ctio->dseg_count = 0;
2373 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
2374 CTIO7_FLAGS_DATA_IN);
2375
2376 /* Real finish is ctio_m1's finish */
2377 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
2378 pkt->u.status0.flags |= __constant_cpu_to_le16(
2379 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 2380
2381 /* qlt_24xx_init_ctio_to_isp will correct
2382 * all neccessary fields that's part of CTIO7.
2383 * There should be no residual of CTIO-CRC2 data.
2384 */
2d70c103
NB		 2385 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2386 &prm);
2387 pr_debug("Status CTIO7: %p\n", ctio);
2388 }
2389 } else
2390 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2391
2392
2393 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
2394
2395 ql_dbg(ql_dbg_tgt, vha, 0xe01a,
2396 "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
2397 pkt, scsi_status);
2398
2399 qla2x00_start_iocbs(vha, vha->req);
2400 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2401
2402 return 0;
2403
2404out_unmap_unlock:
2405 if (cmd->sg_mapped)
2406 qlt_unmap_sg(vha, cmd);
2407 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2408
2409 return res;
2410}
2411EXPORT_SYMBOL(qlt_xmit_response);
2412
2413int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2414{
2415 struct ctio7_to_24xx *pkt;
2416 struct scsi_qla_host *vha = cmd->vha;
2417 struct qla_hw_data *ha = vha->hw;
2418 struct qla_tgt *tgt = cmd->tgt;
2419 struct qla_tgt_prm prm;
2420 unsigned long flags;
2421 int res = 0;
2422
2423 memset(&prm, 0, sizeof(prm));
2424 prm.cmd = cmd;
2425 prm.tgt = tgt;
2426 prm.sg = NULL;
2427 prm.req_cnt = 1;
2428
2429 /* Send marker if required */
2430 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2431 return -EIO;
2432
f83adb61
QT		 2433 ql_dbg(ql_dbg_tgt, vha, 0xe01b,
2434 "%s: CTIO_start: vha(%d) se_cmd %p ox_id %04x\n",
2435 __func__, (int)vha->vp_idx, &cmd->se_cmd,
2436 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103
NB		 2437
2438 /* Calculate number of entries and segments required */
2439 if (qlt_pci_map_calc_cnt(&prm) != 0)
2440 return -EAGAIN;
2441
2442 spin_lock_irqsave(&ha->hardware_lock, flags);
2443
2444 /* Does F/W have an IOCBs for this request */
2445 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2446 if (res != 0)
2447 goto out_unlock_free_unmap;
f83adb61
QT		 2448 if (cmd->se_cmd.prot_op)
2449 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2450 else
2451 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 2452
2d70c103
NB		 2453 if (unlikely(res != 0))
2454 goto out_unlock_free_unmap;
2455 pkt = (struct ctio7_to_24xx *)prm.pkt;
2456 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2457 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 2458
2459 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2460 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2461
2462 cmd->state = QLA_TGT_STATE_NEED_DATA;
2463
2464 qla2x00_start_iocbs(vha, vha->req);
2465 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2466
2467 return res;
2468
2469out_unlock_free_unmap:
2470 if (cmd->sg_mapped)
2471 qlt_unmap_sg(vha, cmd);
2472 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2473
2474 return res;
2475}
2476EXPORT_SYMBOL(qlt_rdy_to_xfer);
2477
f83adb61
QT		 2478
2479/*
2480 * Checks the guard or meta-data for the type of error
2481 * detected by the HBA.
2482 */
2483static inline int
2484qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2485 struct ctio_crc_from_fw *sts)
2486{
2487 uint8_t *ap = &sts->actual_dif[0];
2488 uint8_t *ep = &sts->expected_dif[0];
2489 uint32_t e_ref_tag, a_ref_tag;
2490 uint16_t e_app_tag, a_app_tag;
2491 uint16_t e_guard, a_guard;
2492 uint64_t lba = cmd->se_cmd.t_task_lba;
2493
2494 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2495 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2496 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2497
2498 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2499 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2500 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2501
2502 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2503 "iocb(s) %p Returned STATUS.\n", sts);
2504
2505 ql_dbg(ql_dbg_tgt, vha, 0xf075,
2506 "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",
2507 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2508 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2509
2510 /*
2511 * Ignore sector if:
2512 * For type 3: ref & app tag is all 'f's
2513 * For type 0,1,2: app tag is all 'f's
2514 */
2515 if ((a_app_tag == 0xffff) &&
2516 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2517 (a_ref_tag == 0xffffffff))) {
2518 uint32_t blocks_done;
2519
2520 /* 2TB boundary case covered automatically with this */
2521 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2522 cmd->se_cmd.bad_sector = e_ref_tag;
2523 cmd->se_cmd.pi_err = 0;
2524 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2525 "need to return scsi good\n");
2526
2527 /* Update protection tag */
2528 if (cmd->prot_sg_cnt) {
2529 uint32_t i, j = 0, k = 0, num_ent;
2530 struct scatterlist *sg, *sgl;
2531
2532
2533 sgl = cmd->prot_sg;
2534
2535 /* Patch the corresponding protection tags */
2536 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2537 num_ent = sg_dma_len(sg) / 8;
2538 if (k + num_ent < blocks_done) {
2539 k += num_ent;
2540 continue;
2541 }
2542 j = blocks_done - k - 1;
2543 k = blocks_done;
2544 break;
2545 }
2546
2547 if (k != blocks_done) {
2548 ql_log(ql_log_warn, vha, 0xf076,
2549 "unexpected tag values tag:lba=%u:%llu)\n",
2550 e_ref_tag, (unsigned long long)lba);
2551 goto out;
2552 }
2553
2554#if 0
2555 struct sd_dif_tuple *spt;
2556 /* TODO:
2557 * This section came from initiator. Is it valid here?
2558 * should ulp be override with actual val???
2559 */
2560 spt = page_address(sg_page(sg)) + sg->offset;
2561 spt += j;
2562
2563 spt->app_tag = 0xffff;
2564 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2565 spt->ref_tag = 0xffffffff;
2566#endif
2567 }
2568
2569 return 0;
2570 }
2571
2572 /* check guard */
2573 if (e_guard != a_guard) {
2574 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2575 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2576
2577 ql_log(ql_log_warn, vha, 0xe076,
2578 "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",
2579 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2580 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2581 a_guard, e_guard, cmd);
2582 goto out;
2583 }
2584
2585 /* check ref tag */
2586 if (e_ref_tag != a_ref_tag) {
2587 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
2588 cmd->se_cmd.bad_sector = e_ref_tag;
2589
2590 ql_log(ql_log_warn, vha, 0xe077,
2591 "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",
2592 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2593 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2594 a_guard, e_guard, cmd);
2595 goto out;
2596 }
2597
2598 /* check appl tag */
2599 if (e_app_tag != a_app_tag) {
2600 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
2601 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2602
2603 ql_log(ql_log_warn, vha, 0xe078,
2604 "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",
2605 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2606 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2607 a_guard, e_guard, cmd);
2608 goto out;
2609 }
2610out:
2611 return 1;
2612}
2613
2614
2d70c103
NB		 2615/* If hardware_lock held on entry, might drop it, then reaquire */
2616/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2617static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2618 struct qla_tgt_cmd *cmd,
2619 struct atio_from_isp *atio)
2620{
2621 struct ctio7_to_24xx *ctio24;
2622 struct qla_hw_data *ha = vha->hw;
2623 request_t *pkt;
2624 int ret = 0;
33a5fcee 2625 uint16_t temp;
2d70c103
NB		 2626
2627 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2628
2629 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
2630 if (pkt == NULL) {
2631 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2632 "qla_target(%d): %s failed: unable to allocate "
2633 "request packet\n", vha->vp_idx, __func__);
2634 return -ENOMEM;
2635 }
2636
2637 if (cmd != NULL) {
2638 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2639 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2640 "qla_target(%d): Terminating cmd %p with "
2641 "incorrect state %d\n", vha->vp_idx, cmd,
2642 cmd->state);
2643 } else
2644 ret = 1;
2645 }
2646
2647 pkt->entry_count = 1;
2648 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2649
2650 ctio24 = (struct ctio7_to_24xx *)pkt;
2651 ctio24->entry_type = CTIO_TYPE7;
2652 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2653 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2654 ctio24->vp_index = vha->vp_idx;
2655 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2656 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2657 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2658 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2659 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2660 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2661 CTIO7_FLAGS_TERMINATE);
33a5fcee
QT		 2662 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2663 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2664
2665 /* Most likely, it isn't needed */
2666 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2667 &atio->u.isp24.fcp_cmnd.add_cdb[
2668 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2669 if (ctio24->u.status1.residual != 0)
2670 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2671
2672 qla2x00_start_iocbs(vha, vha->req);
2673 return ret;
2674}
2675
2676static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2677 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2678{
2679 unsigned long flags;
2680 int rc;
2681
2682 if (qlt_issue_marker(vha, ha_locked) < 0)
2683 return;
2684
2685 if (ha_locked) {
2686 rc = __qlt_send_term_exchange(vha, cmd, atio);
2687 goto done;
2688 }
2689 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2690 rc = __qlt_send_term_exchange(vha, cmd, atio);
2691 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2692done:
7b898542
QT		 2693 /*
2694 * Terminate exchange will tell fw to release any active CTIO
2695 * that's in FW posession and cleanup the exchange.
2696 *
2697 * "cmd->state == QLA_TGT_STATE_ABORTED" means CTIO is still
2698 * down at FW. Free the cmd later when CTIO comes back later
2699 * w/aborted(0x2) status.
2700 *
2701 * "cmd->state != QLA_TGT_STATE_ABORTED" means CTIO is already
2702 * back w/some err. Free the cmd now.
2703 */
2704 if ((rc == 1) && (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 2705 if (!ha_locked && !in_interrupt())
2706 msleep(250); /* just in case */
2707
f83adb61
QT		 2708 if (cmd->sg_mapped)
2709 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2710 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2711 }
7b898542 2712 return;
2d70c103
NB		 2713}
2714
2715void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2716{
51a07f84
NB		 2717 struct qla_tgt_sess *sess = cmd->sess;
2718
f83adb61
QT		 2719 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
2720 "%s: se_cmd[%p] ox_id %04x\n",
2721 __func__, &cmd->se_cmd,
2722 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 2723
f83adb61 2724 BUG_ON(cmd->sg_mapped);
2d70c103
NB		 2725 if (unlikely(cmd->free_sg))
2726 kfree(cmd->sg);
51a07f84
NB		 2727
2728 if (!sess || !sess->se_sess) {
2729 WARN_ON(1);
2730 return;
2731 }
2732 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 2733}
2734EXPORT_SYMBOL(qlt_free_cmd);
2735
2736/* ha->hardware_lock supposed to be held on entry */
2737static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2738 struct qla_tgt_cmd *cmd, void *ctio)
2739{
2740 struct qla_tgt_srr_ctio *sc;
0e8cd71c 2741 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 2742 struct qla_tgt_srr_imm *imm;
2743
2744 tgt->ctio_srr_id++;
2745
2746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2747 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2748
2749 if (!ctio) {
2750 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2751 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2752 vha->vp_idx);
2753 return -EINVAL;
2754 }
2755
2756 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2757 if (sc != NULL) {
2758 sc->cmd = cmd;
2759 /* IRQ is already OFF */
2760 spin_lock(&tgt->srr_lock);
2761 sc->srr_id = tgt->ctio_srr_id;
2762 list_add_tail(&sc->srr_list_entry,
2763 &tgt->srr_ctio_list);
2764 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2765 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2766 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2767 int found = 0;
2768 list_for_each_entry(imm, &tgt->srr_imm_list,
2769 srr_list_entry) {
2770 if (imm->srr_id == sc->srr_id) {
2771 found = 1;
2772 break;
2773 }
2774 }
2775 if (found) {
2776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2777 "Scheduling srr work\n");
2778 schedule_work(&tgt->srr_work);
2779 } else {
2780 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2781 "qla_target(%d): imm_srr_id "
2782 "== ctio_srr_id (%d), but there is no "
2783 "corresponding SRR IMM, deleting CTIO "
2784 "SRR %p\n", vha->vp_idx,
2785 tgt->ctio_srr_id, sc);
2786 list_del(&sc->srr_list_entry);
2787 spin_unlock(&tgt->srr_lock);
2788
2789 kfree(sc);
2790 return -EINVAL;
2791 }
2792 }
2793 spin_unlock(&tgt->srr_lock);
2794 } else {
2795 struct qla_tgt_srr_imm *ti;
2796
2797 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2798 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2799 vha->vp_idx);
2800 spin_lock(&tgt->srr_lock);
2801 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2802 srr_list_entry) {
2803 if (imm->srr_id == tgt->ctio_srr_id) {
2804 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2805 "IMM SRR %p deleted (id %d)\n",
2806 imm, imm->srr_id);
2807 list_del(&imm->srr_list_entry);
2808 qlt_reject_free_srr_imm(vha, imm, 1);
2809 }
2810 }
2811 spin_unlock(&tgt->srr_lock);
2812
2813 return -ENOMEM;
2814 }
2815
2816 return 0;
2817}
2818
2819/*
2820 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2821 */
2822static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2823 struct qla_tgt_cmd *cmd, uint32_t status)
2824{
2825 int term = 0;
2826
2827 if (ctio != NULL) {
2828 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2829 term = !(c->flags &
2830 __constant_cpu_to_le16(OF_TERM_EXCH));
2831 } else
2832 term = 1;
2833
2834 if (term)
2835 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2836
2837 return term;
2838}
2839
2840/* ha->hardware_lock supposed to be held on entry */
2841static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2842 uint32_t handle)
2843{
2844 struct qla_hw_data *ha = vha->hw;
2845
2846 handle--;
2847 if (ha->tgt.cmds[handle] != NULL) {
2848 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2849 ha->tgt.cmds[handle] = NULL;
2850 return cmd;
2851 } else
2852 return NULL;
2853}
2854
2855/* ha->hardware_lock supposed to be held on entry */
2856static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2857 uint32_t handle, void *ctio)
2858{
2859 struct qla_tgt_cmd *cmd = NULL;
2860
2861 /* Clear out internal marks */
2862 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2863 CTIO_INTERMEDIATE_HANDLE_MARK);
2864
2865 if (handle != QLA_TGT_NULL_HANDLE) {
2866 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
2867 ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
2868 "SKIP_HANDLE CTIO\n");
2869 return NULL;
2870 }
2871 /* handle-1 is actually used */
8d93f550 2872 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 2873 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2874 "qla_target(%d): Wrong handle %x received\n",
2875 vha->vp_idx, handle);
2876 return NULL;
2877 }
2878 cmd = qlt_get_cmd(vha, handle);
2879 if (unlikely(cmd == NULL)) {
2880 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2881 "qla_target(%d): Suspicious: unable to "
2882 "find the command with handle %x\n", vha->vp_idx,
2883 handle);
2884 return NULL;
2885 }
2886 } else if (ctio != NULL) {
2887 /* We can't get loop ID from CTIO7 */
2888 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2889 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2890 "support NULL handles\n", vha->vp_idx);
2891 return NULL;
2892 }
2893
2894 return cmd;
2895}
2896
2897/*
2898 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2899 */
2900static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2901 uint32_t status, void *ctio)
2902{
2903 struct qla_hw_data *ha = vha->hw;
2904 struct se_cmd *se_cmd;
2905 struct target_core_fabric_ops *tfo;
2906 struct qla_tgt_cmd *cmd;
2907
2908 ql_dbg(ql_dbg_tgt, vha, 0xe01e,
2909 "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
2910 vha->vp_idx, ctio, status, handle);
2911
2912 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2913 /* That could happen only in case of an error/reset/abort */
2914 if (status != CTIO_SUCCESS) {
2915 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2916 "Intermediate CTIO received"
2917 " (status %x)\n", status);
2918 }
2919 return;
2920 }
2921
2922 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 2923 if (cmd == NULL)
2d70c103 2924 return;
092e1dc3 2925
2d70c103
NB		 2926 se_cmd = &cmd->se_cmd;
2927 tfo = se_cmd->se_tfo;
2928
2929 if (cmd->sg_mapped)
2930 qlt_unmap_sg(vha, cmd);
2931
2932 if (unlikely(status != CTIO_SUCCESS)) {
2933 switch (status & 0xFFFF) {
2934 case CTIO_LIP_RESET:
2935 case CTIO_TARGET_RESET:
2936 case CTIO_ABORTED:
7b898542 2937 /* driver request abort via Terminate exchange */
2d70c103
NB		 2938 case CTIO_TIMEOUT:
2939 case CTIO_INVALID_RX_ID:
2940 /* They are OK */
2941 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
2942 "qla_target(%d): CTIO with "
2943 "status %#x received, state %x, se_cmd %p, "
2944 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
2945 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
2946 status, cmd->state, se_cmd);
2947 break;
2948
2949 case CTIO_PORT_LOGGED_OUT:
2950 case CTIO_PORT_UNAVAILABLE:
2951 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
2952 "qla_target(%d): CTIO with PORT LOGGED "
2953 "OUT (29) or PORT UNAVAILABLE (28) status %x "
2954 "received (state %x, se_cmd %p)\n", vha->vp_idx,
2955 status, cmd->state, se_cmd);
2956 break;
2957
2958 case CTIO_SRR_RECEIVED:
2959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
2960 "qla_target(%d): CTIO with SRR_RECEIVED"
2961 " status %x received (state %x, se_cmd %p)\n",
2962 vha->vp_idx, status, cmd->state, se_cmd);
2963 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
2964 break;
2965 else
2966 return;
2967
f83adb61
QT		 2968 case CTIO_DIF_ERROR: {
2969 struct ctio_crc_from_fw *crc =
2970 (struct ctio_crc_from_fw *)ctio;
2971 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
2972 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
2973 vha->vp_idx, status, cmd->state, se_cmd,
2974 *((u64 *)&crc->actual_dif[0]),
2975 *((u64 *)&crc->expected_dif[0]));
2976
2977 if (qlt_handle_dif_error(vha, cmd, ctio)) {
2978 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2979 /* scsi Write/xfer rdy complete */
2980 goto skip_term;
2981 } else {
2982 /* scsi read/xmit respond complete
2983 * call handle dif to send scsi status
2984 * rather than terminate exchange.
2985 */
2986 cmd->state = QLA_TGT_STATE_PROCESSED;
2987 ha->tgt.tgt_ops->handle_dif_err(cmd);
2988 return;
2989 }
2990 } else {
2991 /* Need to generate a SCSI good completion.
2992 * because FW did not send scsi status.
2993 */
2994 status = 0;
2995 goto skip_term;
2996 }
2997 break;
2998 }
2d70c103
NB		 2999 default:
3000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3001 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3002 vha->vp_idx, status, cmd->state, se_cmd);
3003 break;
3004 }
3005
7b898542
QT		 3006
3007 /* "cmd->state == QLA_TGT_STATE_ABORTED" means
3008 * cmd is already aborted/terminated, we don't
3009 * need to terminate again. The exchange is already
3010 * cleaned up/freed at FW level. Just cleanup at driver
3011 * level.
3012 */
3013 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3014 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3015 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3016 return;
7b898542 3017 }
2d70c103 3018 }
f83adb61 3019skip_term:
2d70c103
NB		 3020
3021 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3022 ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
3023 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3024 int rx_status = 0;
3025
3026 cmd->state = QLA_TGT_STATE_DATA_IN;
3027
3028 if (unlikely(status != CTIO_SUCCESS))
3029 rx_status = -EIO;
3030 else
3031 cmd->write_data_transferred = 1;
3032
3033 ql_dbg(ql_dbg_tgt, vha, 0xe020,
3034 "Data received, context %x, rx_status %d\n",
3035 0x0, rx_status);
3036
3037 ha->tgt.tgt_ops->handle_data(cmd);
3038 return;
3039 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
3040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3041 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
3042 } else {
3043 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3044 "qla_target(%d): A command in state (%d) should "
3045 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3046 }
3047
7b898542
QT		 3048 if (unlikely(status != CTIO_SUCCESS) &&
3049 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3050 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3051 dump_stack();
3052 }
3053
3054 ha->tgt.tgt_ops->free_cmd(cmd);
3055}
3056
2d70c103
NB		 3057static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3058 uint8_t task_codes)
3059{
3060 int fcp_task_attr;
3061
3062 switch (task_codes) {
3063 case ATIO_SIMPLE_QUEUE:
3064 fcp_task_attr = MSG_SIMPLE_TAG;
3065 break;
3066 case ATIO_HEAD_OF_QUEUE:
3067 fcp_task_attr = MSG_HEAD_TAG;
3068 break;
3069 case ATIO_ORDERED_QUEUE:
3070 fcp_task_attr = MSG_ORDERED_TAG;
3071 break;
3072 case ATIO_ACA_QUEUE:
3073 fcp_task_attr = MSG_ACA_TAG;
3074 break;
3075 case ATIO_UNTAGGED:
3076 fcp_task_attr = MSG_SIMPLE_TAG;
3077 break;
3078 default:
3079 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3080 "qla_target: unknown task code %x, use ORDERED instead\n",
3081 task_codes);
3082 fcp_task_attr = MSG_ORDERED_TAG;
3083 break;
3084 }
3085
3086 return fcp_task_attr;
3087}
3088
3089static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3090 uint8_t *);
3091/*
3092 * Process context for I/O path into tcm_qla2xxx code
3093 */
51a07f84 3094static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3095{
2d70c103
NB		 3096 scsi_qla_host_t *vha = cmd->vha;
3097 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3098 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3099 struct qla_tgt_sess *sess = cmd->sess;
2d70c103
NB		 3100 struct atio_from_isp *atio = &cmd->atio;
3101 unsigned char *cdb;
3102 unsigned long flags;
3103 uint32_t data_length;
3104 int ret, fcp_task_attr, data_dir, bidi = 0;
3105
3106 if (tgt->tgt_stop)
3107 goto out_term;
3108
2d70c103
NB		 3109 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
3110 cmd->tag = atio->u.isp24.exchange_addr;
3111 cmd->unpacked_lun = scsilun_to_int(
3112 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3113
3114 if (atio->u.isp24.fcp_cmnd.rddata &&
3115 atio->u.isp24.fcp_cmnd.wrdata) {
3116 bidi = 1;
3117 data_dir = DMA_TO_DEVICE;
3118 } else if (atio->u.isp24.fcp_cmnd.rddata)
3119 data_dir = DMA_FROM_DEVICE;
3120 else if (atio->u.isp24.fcp_cmnd.wrdata)
3121 data_dir = DMA_TO_DEVICE;
3122 else
3123 data_dir = DMA_NONE;
3124
3125 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3126 atio->u.isp24.fcp_cmnd.task_attr);
3127 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3128 &atio->u.isp24.fcp_cmnd.add_cdb[
3129 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3130
3131 ql_dbg(ql_dbg_tgt, vha, 0xe022,
f83adb61
QT		 3132 "qla_target: START qla cmd: %p se_cmd %p lun: 0x%04x (tag %d) len(%d) ox_id %x\n",
3133 cmd, &cmd->se_cmd, cmd->unpacked_lun, cmd->tag, data_length,
3134 cmd->atio.u.isp24.fcp_hdr.ox_id);
2d70c103 3135
51a07f84
NB		 3136 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3137 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 3138 if (ret != 0)
3139 goto out_term;
3140 /*
3141 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3142 */
08234e3a 3143 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 3144 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 3145 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 3146 return;
3147
3148out_term:
3149 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
3150 /*
fae9eaf8
RD		 3151 * cmd has not sent to target yet, so pass NULL as the second
3152 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103
NB		 3153 */
3154 spin_lock_irqsave(&ha->hardware_lock, flags);
3155 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
51a07f84
NB		 3156 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3157 ha->tgt.tgt_ops->put_sess(sess);
3158 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3159}
3160
3161static void qlt_do_work(struct work_struct *work)
3162{
3163 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
3164
3165 __qlt_do_work(cmd);
3166}
3167
3168static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
3169 struct qla_tgt_sess *sess,
3170 struct atio_from_isp *atio)
3171{
3172 struct se_session *se_sess = sess->se_sess;
3173 struct qla_tgt_cmd *cmd;
3174 int tag;
3175
3176 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3177 if (tag < 0)
3178 return NULL;
3179
3180 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3181 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3182
3183 memcpy(&cmd->atio, atio, sizeof(*atio));
3184 cmd->state = QLA_TGT_STATE_NEW;
3185 cmd->tgt = vha->vha_tgt.qla_tgt;
3186 cmd->vha = vha;
3187 cmd->se_cmd.map_tag = tag;
3188 cmd->sess = sess;
3189 cmd->loop_id = sess->loop_id;
3190 cmd->conf_compl_supported = sess->conf_compl_supported;
3191
3192 return cmd;
3193}
3194
3195static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
3196 uint16_t);
3197
3198static void qlt_create_sess_from_atio(struct work_struct *work)
3199{
3200 struct qla_tgt_sess_op *op = container_of(work,
3201 struct qla_tgt_sess_op, work);
3202 scsi_qla_host_t *vha = op->vha;
3203 struct qla_hw_data *ha = vha->hw;
3204 struct qla_tgt_sess *sess;
3205 struct qla_tgt_cmd *cmd;
3206 unsigned long flags;
3207 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
3208
3209 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
3210 "qla_target(%d): Unable to find wwn login"
3211 " (s_id %x:%x:%x), trying to create it manually\n",
3212 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
3213
3214 if (op->atio.u.raw.entry_count > 1) {
3215 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
3216 "Dropping multy entry atio %p\n", &op->atio);
3217 goto out_term;
3218 }
3219
3220 mutex_lock(&vha->vha_tgt.tgt_mutex);
3221 sess = qlt_make_local_sess(vha, s_id);
3222 /* sess has an extra creation ref. */
3223 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3224
3225 if (!sess)
3226 goto out_term;
3227 /*
3228 * Now obtain a pre-allocated session tag using the original op->atio
3229 * packet header, and dispatch into __qlt_do_work() using the existing
3230 * process context.
3231 */
3232 cmd = qlt_get_tag(vha, sess, &op->atio);
3233 if (!cmd) {
3234 spin_lock_irqsave(&ha->hardware_lock, flags);
3235 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
2d70c103 3236 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 3237 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3238 kfree(op);
3239 return;
3240 }
3241 /*
3242 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release
3243 * the extra reference taken above by qlt_make_local_sess()
3244 */
3245 __qlt_do_work(cmd);
3246 kfree(op);
3247 return;
3248
3249out_term:
3250 spin_lock_irqsave(&ha->hardware_lock, flags);
3251 qlt_send_term_exchange(vha, NULL, &op->atio, 1);
08234e3a 3252 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84
NB		 3253 kfree(op);
3254
2d70c103
NB		 3255}
3256
3257/* ha->hardware_lock supposed to be held on entry */
3258static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3259 struct atio_from_isp *atio)
3260{
51a07f84 3261 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3262 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3263 struct qla_tgt_sess *sess;
2d70c103
NB		 3264 struct qla_tgt_cmd *cmd;
3265
3266 if (unlikely(tgt->tgt_stop)) {
3267 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
3268 "New command while device %p is shutting down\n", tgt);
3269 return -EFAULT;
3270 }
3271
51a07f84
NB		 3272 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
3273 if (unlikely(!sess)) {
3274 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
3275 GFP_ATOMIC);
3276 if (!op)
3277 return -ENOMEM;
3278
3279 memcpy(&op->atio, atio, sizeof(*atio));
3280 INIT_WORK(&op->work, qlt_create_sess_from_atio);
3281 queue_work(qla_tgt_wq, &op->work);
3282 return 0;
3283 }
3284 /*
3285 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
3286 */
3287 kref_get(&sess->se_sess->sess_kref);
3288
3289 cmd = qlt_get_tag(vha, sess, atio);
2d70c103
NB		 3290 if (!cmd) {
3291 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
3292 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
51a07f84 3293 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 3294 return -ENOMEM;
3295 }
3296
2d70c103
NB		 3297 INIT_WORK(&cmd->work, qlt_do_work);
3298 queue_work(qla_tgt_wq, &cmd->work);
3299 return 0;
3300
3301}
3302
3303/* ha->hardware_lock supposed to be held on entry */
3304static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
3305 int fn, void *iocb, int flags)
3306{
3307 struct scsi_qla_host *vha = sess->vha;
3308 struct qla_hw_data *ha = vha->hw;
3309 struct qla_tgt_mgmt_cmd *mcmd;
3310 int res;
3311 uint8_t tmr_func;
3312
3313 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3314 if (!mcmd) {
3315 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
3316 "qla_target(%d): Allocation of management "
3317 "command failed, some commands and their data could "
3318 "leak\n", vha->vp_idx);
3319 return -ENOMEM;
3320 }
3321 memset(mcmd, 0, sizeof(*mcmd));
3322 mcmd->sess = sess;
3323
3324 if (iocb) {
3325 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3326 sizeof(mcmd->orig_iocb.imm_ntfy));
3327 }
3328 mcmd->tmr_func = fn;
3329 mcmd->flags = flags;
3330
3331 switch (fn) {
3332 case QLA_TGT_CLEAR_ACA:
3333 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
3334 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
3335 tmr_func = TMR_CLEAR_ACA;
3336 break;
3337
3338 case QLA_TGT_TARGET_RESET:
3339 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
3340 "qla_target(%d): TARGET_RESET received\n",
3341 sess->vha->vp_idx);
3342 tmr_func = TMR_TARGET_WARM_RESET;
3343 break;
3344
3345 case QLA_TGT_LUN_RESET:
3346 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
3347 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
3348 tmr_func = TMR_LUN_RESET;
3349 break;
3350
3351 case QLA_TGT_CLEAR_TS:
3352 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
3353 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
3354 tmr_func = TMR_CLEAR_TASK_SET;
3355 break;
3356
3357 case QLA_TGT_ABORT_TS:
3358 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
3359 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
3360 tmr_func = TMR_ABORT_TASK_SET;
3361 break;
3362#if 0
3363 case QLA_TGT_ABORT_ALL:
3364 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
3365 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
3366 sess->vha->vp_idx);
3367 tmr_func = 0;
3368 break;
3369
3370 case QLA_TGT_ABORT_ALL_SESS:
3371 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
3372 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
3373 sess->vha->vp_idx);
3374 tmr_func = 0;
3375 break;
3376
3377 case QLA_TGT_NEXUS_LOSS_SESS:
3378 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
3379 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
3380 sess->vha->vp_idx);
3381 tmr_func = 0;
3382 break;
3383
3384 case QLA_TGT_NEXUS_LOSS:
3385 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
3386 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
3387 tmr_func = 0;
3388 break;
3389#endif
3390 default:
3391 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
3392 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
3393 sess->vha->vp_idx, fn);
3394 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3395 return -ENOSYS;
3396 }
3397
3398 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
3399 if (res != 0) {
3400 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
3401 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
3402 sess->vha->vp_idx, res);
3403 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3404 return -EFAULT;
3405 }
3406
3407 return 0;
3408}
3409
3410/* ha->hardware_lock supposed to be held on entry */
3411static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
3412{
3413 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3414 struct qla_hw_data *ha = vha->hw;
3415 struct qla_tgt *tgt;
3416 struct qla_tgt_sess *sess;
3417 uint32_t lun, unpacked_lun;
3418 int lun_size, fn;
3419
0e8cd71c 3420 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3421
3422 lun = a->u.isp24.fcp_cmnd.lun;
3423 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
3424 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
3425 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3426 a->u.isp24.fcp_hdr.s_id);
3427 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3428
3429 if (!sess) {
3430 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
3431 "qla_target(%d): task mgmt fn 0x%x for "
3432 "non-existant session\n", vha->vp_idx, fn);
3433 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
3434 sizeof(struct atio_from_isp));
3435 }
3436
3437 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
3438}
3439
3440/* ha->hardware_lock supposed to be held on entry */
3441static int __qlt_abort_task(struct scsi_qla_host *vha,
3442 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
3443{
3444 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3445 struct qla_hw_data *ha = vha->hw;
3446 struct qla_tgt_mgmt_cmd *mcmd;
3447 uint32_t lun, unpacked_lun;
3448 int rc;
3449
3450 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3451 if (mcmd == NULL) {
3452 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
3453 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
3454 vha->vp_idx, __func__);
3455 return -ENOMEM;
3456 }
3457 memset(mcmd, 0, sizeof(*mcmd));
3458
3459 mcmd->sess = sess;
3460 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3461 sizeof(mcmd->orig_iocb.imm_ntfy));
3462
3463 lun = a->u.isp24.fcp_cmnd.lun;
3464 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3465
3466 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
3467 le16_to_cpu(iocb->u.isp2x.seq_id));
3468 if (rc != 0) {
3469 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
3470 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
3471 vha->vp_idx, rc);
3472 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3473 return -EFAULT;
3474 }
3475
3476 return 0;
3477}
3478
3479/* ha->hardware_lock supposed to be held on entry */
3480static int qlt_abort_task(struct scsi_qla_host *vha,
3481 struct imm_ntfy_from_isp *iocb)
3482{
3483 struct qla_hw_data *ha = vha->hw;
3484 struct qla_tgt_sess *sess;
3485 int loop_id;
3486
3487 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
3488
3489 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
3490 if (sess == NULL) {
3491 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
3492 "qla_target(%d): task abort for unexisting "
3493 "session\n", vha->vp_idx);
0e8cd71c 3494 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 3495 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
3496 }
3497
3498 return __qlt_abort_task(vha, iocb, sess);
3499}
3500
3501/*
3502 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3503 */
3504static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
3505 struct imm_ntfy_from_isp *iocb)
3506{
2d70c103
NB		 3507 int res = 0;
3508
3509 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
7b833558
OK		 3510 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
3511 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2d70c103
NB		 3512
3513 switch (iocb->u.isp24.status_subcode) {
3514 case ELS_PLOGI:
3515 case ELS_FLOGI:
3516 case ELS_PRLI:
3517 case ELS_LOGO:
3518 case ELS_PRLO:
3519 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3520 break;
3521 case ELS_PDISC:
3522 case ELS_ADISC:
3523 {
0e8cd71c 3524 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3525 if (tgt->link_reinit_iocb_pending) {
3526 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3527 0, 0, 0, 0, 0, 0);
3528 tgt->link_reinit_iocb_pending = 0;
3529 }
3530 res = 1; /* send notify ack */
3531 break;
3532 }
3533
3534 default:
3535 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
3536 "qla_target(%d): Unsupported ELS command %x "
3537 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
3538 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3539 break;
3540 }
3541
3542 return res;
3543}
3544
3545static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
3546{
3547 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
3548 size_t first_offset = 0, rem_offset = offset, tmp = 0;
3549 int i, sg_srr_cnt, bufflen = 0;
3550
3551 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
3552 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
3553 "cmd->sg_cnt: %u, direction: %d\n",
3554 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
3555
3556 /*
3557 * FIXME: Reject non zero SRR relative offset until we can test
3558 * this code properly.
3559 */
3560 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
3561 return -1;
3562
3563 if (!cmd->sg || !cmd->sg_cnt) {
3564 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
3565 "Missing cmd->sg or zero cmd->sg_cnt in"
3566 " qla_tgt_set_data_offset\n");
3567 return -EINVAL;
3568 }
3569 /*
3570 * Walk the current cmd->sg list until we locate the new sg_srr_start
3571 */
3572 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
3573 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
3574 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
3575 i, sg, sg_page(sg), sg->length, sg->offset);
3576
3577 if ((sg->length + tmp) > offset) {
3578 first_offset = rem_offset;
3579 sg_srr_start = sg;
3580 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
3581 "Found matching sg[%d], using %p as sg_srr_start, "
3582 "and using first_offset: %zu\n", i, sg,
3583 first_offset);
3584 break;
3585 }
3586 tmp += sg->length;
3587 rem_offset -= sg->length;
3588 }
3589
3590 if (!sg_srr_start) {
3591 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
3592 "Unable to locate sg_srr_start for offset: %u\n", offset);
3593 return -EINVAL;
3594 }
3595 sg_srr_cnt = (cmd->sg_cnt - i);
3596
3597 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
3598 if (!sg_srr) {
3599 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
3600 "Unable to allocate sgp\n");
3601 return -ENOMEM;
3602 }
3603 sg_init_table(sg_srr, sg_srr_cnt);
3604 sgp = &sg_srr[0];
3605 /*
3606 * Walk the remaining list for sg_srr_start, mapping to the newly
3607 * allocated sg_srr taking first_offset into account.
3608 */
3609 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
3610 if (first_offset) {
3611 sg_set_page(sgp, sg_page(sg),
3612 (sg->length - first_offset), first_offset);
3613 first_offset = 0;
3614 } else {
3615 sg_set_page(sgp, sg_page(sg), sg->length, 0);
3616 }
3617 bufflen += sgp->length;
3618
3619 sgp = sg_next(sgp);
3620 if (!sgp)
3621 break;
3622 }
3623
3624 cmd->sg = sg_srr;
3625 cmd->sg_cnt = sg_srr_cnt;
3626 cmd->bufflen = bufflen;
3627 cmd->offset += offset;
3628 cmd->free_sg = 1;
3629
3630 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
3631 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
3632 cmd->sg_cnt);
3633 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
3634 cmd->bufflen);
3635 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
3636 cmd->offset);
3637
3638 if (cmd->sg_cnt < 0)
3639 BUG();
3640
3641 if (cmd->bufflen < 0)
3642 BUG();
3643
3644 return 0;
3645}
3646
3647static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
3648 uint32_t srr_rel_offs, int *xmit_type)
3649{
3650 int res = 0, rel_offs;
3651
3652 rel_offs = srr_rel_offs - cmd->offset;
3653 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
3654 srr_rel_offs, rel_offs);
3655
3656 *xmit_type = QLA_TGT_XMIT_ALL;
3657
3658 if (rel_offs < 0) {
3659 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
3660 "qla_target(%d): SRR rel_offs (%d) < 0",
3661 cmd->vha->vp_idx, rel_offs);
3662 res = -1;
3663 } else if (rel_offs == cmd->bufflen)
3664 *xmit_type = QLA_TGT_XMIT_STATUS;
3665 else if (rel_offs > 0)
3666 res = qlt_set_data_offset(cmd, rel_offs);
3667
3668 return res;
3669}
3670
3671/* No locks, thread context */
3672static void qlt_handle_srr(struct scsi_qla_host *vha,
3673 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
3674{
3675 struct imm_ntfy_from_isp *ntfy =
3676 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
3677 struct qla_hw_data *ha = vha->hw;
3678 struct qla_tgt_cmd *cmd = sctio->cmd;
3679 struct se_cmd *se_cmd = &cmd->se_cmd;
3680 unsigned long flags;
3681 int xmit_type = 0, resp = 0;
3682 uint32_t offset;
3683 uint16_t srr_ui;
3684
3685 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
3686 srr_ui = ntfy->u.isp24.srr_ui;
3687
3688 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3689 cmd, srr_ui);
3690
3691 switch (srr_ui) {
3692 case SRR_IU_STATUS:
3693 spin_lock_irqsave(&ha->hardware_lock, flags);
3694 qlt_send_notify_ack(vha, ntfy,
3695 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3696 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3697 xmit_type = QLA_TGT_XMIT_STATUS;
3698 resp = 1;
3699 break;
3700 case SRR_IU_DATA_IN:
3701 if (!cmd->sg || !cmd->sg_cnt) {
3702 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3703 "Unable to process SRR_IU_DATA_IN due to"
3704 " missing cmd->sg, state: %d\n", cmd->state);
3705 dump_stack();
3706 goto out_reject;
3707 }
3708 if (se_cmd->scsi_status != 0) {
3709 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3710 "Rejecting SRR_IU_DATA_IN with non GOOD "
3711 "scsi_status\n");
3712 goto out_reject;
3713 }
3714 cmd->bufflen = se_cmd->data_length;
3715
3716 if (qlt_has_data(cmd)) {
3717 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3718 goto out_reject;
3719 spin_lock_irqsave(&ha->hardware_lock, flags);
3720 qlt_send_notify_ack(vha, ntfy,
3721 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3722 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3723 resp = 1;
3724 } else {
3725 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3726 "qla_target(%d): SRR for in data for cmd "
3727 "without them (tag %d, SCSI status %d), "
3728 "reject", vha->vp_idx, cmd->tag,
3729 cmd->se_cmd.scsi_status);
3730 goto out_reject;
3731 }
3732 break;
3733 case SRR_IU_DATA_OUT:
3734 if (!cmd->sg || !cmd->sg_cnt) {
3735 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3736 "Unable to process SRR_IU_DATA_OUT due to"
3737 " missing cmd->sg\n");
3738 dump_stack();
3739 goto out_reject;
3740 }
3741 if (se_cmd->scsi_status != 0) {
3742 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3743 "Rejecting SRR_IU_DATA_OUT"
3744 " with non GOOD scsi_status\n");
3745 goto out_reject;
3746 }
3747 cmd->bufflen = se_cmd->data_length;
3748
3749 if (qlt_has_data(cmd)) {
3750 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3751 goto out_reject;
3752 spin_lock_irqsave(&ha->hardware_lock, flags);
3753 qlt_send_notify_ack(vha, ntfy,
3754 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3755 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3756 if (xmit_type & QLA_TGT_XMIT_DATA)
3757 qlt_rdy_to_xfer(cmd);
3758 } else {
3759 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3760 "qla_target(%d): SRR for out data for cmd "
3761 "without them (tag %d, SCSI status %d), "
3762 "reject", vha->vp_idx, cmd->tag,
3763 cmd->se_cmd.scsi_status);
3764 goto out_reject;
3765 }
3766 break;
3767 default:
3768 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3769 "qla_target(%d): Unknown srr_ui value %x",
3770 vha->vp_idx, srr_ui);
3771 goto out_reject;
3772 }
3773
3774 /* Transmit response in case of status and data-in cases */
3775 if (resp)
3776 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3777
3778 return;
3779
3780out_reject:
3781 spin_lock_irqsave(&ha->hardware_lock, flags);
3782 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3783 NOTIFY_ACK_SRR_FLAGS_REJECT,
3784 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3785 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3786 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3787 cmd->state = QLA_TGT_STATE_DATA_IN;
3788 dump_stack();
3789 } else
3790 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3791 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3792}
3793
3794static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3795 struct qla_tgt_srr_imm *imm, int ha_locked)
3796{
3797 struct qla_hw_data *ha = vha->hw;
3798 unsigned long flags = 0;
3799
3800 if (!ha_locked)
3801 spin_lock_irqsave(&ha->hardware_lock, flags);
3802
3803 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3804 NOTIFY_ACK_SRR_FLAGS_REJECT,
3805 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3806 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3807
3808 if (!ha_locked)
3809 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3810
3811 kfree(imm);
3812}
3813
3814static void qlt_handle_srr_work(struct work_struct *work)
3815{
3816 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3817 struct scsi_qla_host *vha = tgt->vha;
3818 struct qla_tgt_srr_ctio *sctio;
3819 unsigned long flags;
3820
3821 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3822 tgt);
3823
3824restart:
3825 spin_lock_irqsave(&tgt->srr_lock, flags);
3826 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3827 struct qla_tgt_srr_imm *imm, *i, *ti;
3828 struct qla_tgt_cmd *cmd;
3829 struct se_cmd *se_cmd;
3830
3831 imm = NULL;
3832 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3833 srr_list_entry) {
3834 if (i->srr_id == sctio->srr_id) {
3835 list_del(&i->srr_list_entry);
3836 if (imm) {
3837 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3838 "qla_target(%d): There must be "
3839 "only one IMM SRR per CTIO SRR "
3840 "(IMM SRR %p, id %d, CTIO %p\n",
3841 vha->vp_idx, i, i->srr_id, sctio);
3842 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3843 } else
3844 imm = i;
3845 }
3846 }
3847
3848 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3849 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3850 sctio->srr_id);
3851
3852 if (imm == NULL) {
3853 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3854 "Not found matching IMM for SRR CTIO (id %d)\n",
3855 sctio->srr_id);
3856 continue;
3857 } else
3858 list_del(&sctio->srr_list_entry);
3859
3860 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3861
3862 cmd = sctio->cmd;
3863 /*
3864 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3865 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3866 * logic..
3867 */
3868 cmd->offset = 0;
3869 if (cmd->free_sg) {
3870 kfree(cmd->sg);
3871 cmd->sg = NULL;
3872 cmd->free_sg = 0;
3873 }
3874 se_cmd = &cmd->se_cmd;
3875
3876 cmd->sg_cnt = se_cmd->t_data_nents;
3877 cmd->sg = se_cmd->t_data_sg;
3878
3879 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3880 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3881 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
6f58c780
DGW		 3882 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
3883 cmd->sg_cnt, cmd->offset);
2d70c103
NB		 3884
3885 qlt_handle_srr(vha, sctio, imm);
3886
3887 kfree(imm);
3888 kfree(sctio);
3889 goto restart;
3890 }
3891 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3892}
3893
3894/* ha->hardware_lock supposed to be held on entry */
3895static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3896 struct imm_ntfy_from_isp *iocb)
3897{
3898 struct qla_tgt_srr_imm *imm;
0e8cd71c 3899 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3900 struct qla_tgt_srr_ctio *sctio;
3901
3902 tgt->imm_srr_id++;
3903
3904 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
3905 vha->vp_idx);
3906
3907 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
3908 if (imm != NULL) {
3909 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
3910
3911 /* IRQ is already OFF */
3912 spin_lock(&tgt->srr_lock);
3913 imm->srr_id = tgt->imm_srr_id;
3914 list_add_tail(&imm->srr_list_entry,
3915 &tgt->srr_imm_list);
3916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
3917 "IMM NTFY SRR %p added (id %d, ui %x)\n",
3918 imm, imm->srr_id, iocb->u.isp24.srr_ui);
3919 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3920 int found = 0;
3921 list_for_each_entry(sctio, &tgt->srr_ctio_list,
3922 srr_list_entry) {
3923 if (sctio->srr_id == imm->srr_id) {
3924 found = 1;
3925 break;
3926 }
3927 }
3928 if (found) {
3929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
3930 "Scheduling srr work\n");
3931 schedule_work(&tgt->srr_work);
3932 } else {
3933 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
3934 "qla_target(%d): imm_srr_id "
3935 "== ctio_srr_id (%d), but there is no "
3936 "corresponding SRR CTIO, deleting IMM "
3937 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
3938 imm);
3939 list_del(&imm->srr_list_entry);
3940
3941 kfree(imm);
3942
3943 spin_unlock(&tgt->srr_lock);
3944 goto out_reject;
3945 }
3946 }
3947 spin_unlock(&tgt->srr_lock);
3948 } else {
3949 struct qla_tgt_srr_ctio *ts;
3950
3951 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
3952 "qla_target(%d): Unable to allocate SRR IMM "
3953 "entry, SRR request will be rejected\n", vha->vp_idx);
3954
3955 /* IRQ is already OFF */
3956 spin_lock(&tgt->srr_lock);
3957 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
3958 srr_list_entry) {
3959 if (sctio->srr_id == tgt->imm_srr_id) {
3960 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
3961 "CTIO SRR %p deleted (id %d)\n",
3962 sctio, sctio->srr_id);
3963 list_del(&sctio->srr_list_entry);
3964 qlt_send_term_exchange(vha, sctio->cmd,
3965 &sctio->cmd->atio, 1);
3966 kfree(sctio);
3967 }
3968 }
3969 spin_unlock(&tgt->srr_lock);
3970 goto out_reject;
3971 }
3972
3973 return;
3974
3975out_reject:
3976 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
3977 NOTIFY_ACK_SRR_FLAGS_REJECT,
3978 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3979 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3980}
3981
3982/*
3983 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3984 */
3985static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
3986 struct imm_ntfy_from_isp *iocb)
3987{
3988 struct qla_hw_data *ha = vha->hw;
3989 uint32_t add_flags = 0;
3990 int send_notify_ack = 1;
3991 uint16_t status;
3992
3993 status = le16_to_cpu(iocb->u.isp2x.status);
3994 switch (status) {
3995 case IMM_NTFY_LIP_RESET:
3996 {
3997 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
3998 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
3999 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4000 iocb->u.isp24.status_subcode);
4001
4002 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4003 send_notify_ack = 0;
4004 break;
4005 }
4006
4007 case IMM_NTFY_LIP_LINK_REINIT:
4008 {
0e8cd71c 4009 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4010 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4011 "qla_target(%d): LINK REINIT (loop %#x, "
4012 "subcode %x)\n", vha->vp_idx,
4013 le16_to_cpu(iocb->u.isp24.nport_handle),
4014 iocb->u.isp24.status_subcode);
4015 if (tgt->link_reinit_iocb_pending) {
4016 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4017 0, 0, 0, 0, 0, 0);
4018 }
4019 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4020 tgt->link_reinit_iocb_pending = 1;
4021 /*
4022 * QLogic requires to wait after LINK REINIT for possible
4023 * PDISC or ADISC ELS commands
4024 */
4025 send_notify_ack = 0;
4026 break;
4027 }
4028
4029 case IMM_NTFY_PORT_LOGOUT:
4030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4031 "qla_target(%d): Port logout (loop "
4032 "%#x, subcode %x)\n", vha->vp_idx,
4033 le16_to_cpu(iocb->u.isp24.nport_handle),
4034 iocb->u.isp24.status_subcode);
4035
4036 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4037 send_notify_ack = 0;
4038 /* The sessions will be cleared in the callback, if needed */
4039 break;
4040
4041 case IMM_NTFY_GLBL_TPRLO:
4042 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4043 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4044 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4045 send_notify_ack = 0;
4046 /* The sessions will be cleared in the callback, if needed */
4047 break;
4048
4049 case IMM_NTFY_PORT_CONFIG:
4050 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4051 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4052 status);
4053 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4054 send_notify_ack = 0;
4055 /* The sessions will be cleared in the callback, if needed */
4056 break;
4057
4058 case IMM_NTFY_GLBL_LOGO:
4059 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4060 "qla_target(%d): Link failure detected\n",
4061 vha->vp_idx);
4062 /* I_T nexus loss */
4063 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4064 send_notify_ack = 0;
4065 break;
4066
4067 case IMM_NTFY_IOCB_OVERFLOW:
4068 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4069 "qla_target(%d): Cannot provide requested "
4070 "capability (IOCB overflowed the immediate notify "
4071 "resource count)\n", vha->vp_idx);
4072 break;
4073
4074 case IMM_NTFY_ABORT_TASK:
4075 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4076 "qla_target(%d): Abort Task (S %08x I %#x -> "
4077 "L %#x)\n", vha->vp_idx,
4078 le16_to_cpu(iocb->u.isp2x.seq_id),
4079 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4080 le16_to_cpu(iocb->u.isp2x.lun));
4081 if (qlt_abort_task(vha, iocb) == 0)
4082 send_notify_ack = 0;
4083 break;
4084
4085 case IMM_NTFY_RESOURCE:
4086 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4087 "qla_target(%d): Out of resources, host %ld\n",
4088 vha->vp_idx, vha->host_no);
4089 break;
4090
4091 case IMM_NTFY_MSG_RX:
4092 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4093 "qla_target(%d): Immediate notify task %x\n",
4094 vha->vp_idx, iocb->u.isp2x.task_flags);
4095 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4096 send_notify_ack = 0;
4097 break;
4098
4099 case IMM_NTFY_ELS:
4100 if (qlt_24xx_handle_els(vha, iocb) == 0)
4101 send_notify_ack = 0;
4102 break;
4103
4104 case IMM_NTFY_SRR:
4105 qlt_prepare_srr_imm(vha, iocb);
4106 send_notify_ack = 0;
4107 break;
4108
4109 default:
4110 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4111 "qla_target(%d): Received unknown immediate "
4112 "notify status %x\n", vha->vp_idx, status);
4113 break;
4114 }
4115
4116 if (send_notify_ack)
4117 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4118}
4119
4120/*
4121 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4122 * This function sends busy to ISP 2xxx or 24xx.
4123 */
4124static void qlt_send_busy(struct scsi_qla_host *vha,
4125 struct atio_from_isp *atio, uint16_t status)
4126{
4127 struct ctio7_to_24xx *ctio24;
4128 struct qla_hw_data *ha = vha->hw;
4129 request_t *pkt;
4130 struct qla_tgt_sess *sess = NULL;
4131
4132 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4133 atio->u.isp24.fcp_hdr.s_id);
4134 if (!sess) {
4135 qlt_send_term_exchange(vha, NULL, atio, 1);
4136 return;
4137 }
4138 /* Sending marker isn't necessary, since we called from ISR */
4139
4140 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4141 if (!pkt) {
4142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
4143 "qla_target(%d): %s failed: unable to allocate "
4144 "request packet", vha->vp_idx, __func__);
4145 return;
4146 }
4147
4148 pkt->entry_count = 1;
4149 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
4150
4151 ctio24 = (struct ctio7_to_24xx *)pkt;
4152 ctio24->entry_type = CTIO_TYPE7;
4153 ctio24->nport_handle = sess->loop_id;
4154 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
4155 ctio24->vp_index = vha->vp_idx;
4156 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
4157 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
4158 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
4159 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
4160 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
4161 __constant_cpu_to_le16(
4162 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
4163 CTIO7_FLAGS_DONT_RET_CTIO);
4164 /*
4165 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
4166 * if the explicit conformation is used.
4167 */
4168 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
4169 ctio24->u.status1.scsi_status = cpu_to_le16(status);
4170 ctio24->u.status1.residual = get_unaligned((uint32_t *)
4171 &atio->u.isp24.fcp_cmnd.add_cdb[
4172 atio->u.isp24.fcp_cmnd.add_cdb_len]);
4173 if (ctio24->u.status1.residual != 0)
4174 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
4175
4176 qla2x00_start_iocbs(vha, vha->req);
4177}
4178
4179/* ha->hardware_lock supposed to be held on entry */
4180/* called via callback from qla2xxx */
4181static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
4182 struct atio_from_isp *atio)
4183{
4184 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4185 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4186 int rc;
4187
4188 if (unlikely(tgt == NULL)) {
4189 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
4190 "ATIO pkt, but no tgt (ha %p)", ha);
4191 return;
4192 }
4193 ql_dbg(ql_dbg_tgt, vha, 0xe02c,
4194 "qla_target(%d): ATIO pkt %p: type %02x count %02x",
4195 vha->vp_idx, atio, atio->u.raw.entry_type,
4196 atio->u.raw.entry_count);
4197 /*
4198 * In tgt_stop mode we also should allow all requests to pass.
4199 * Otherwise, some commands can stuck.
4200 */
4201
4202 tgt->irq_cmd_count++;
4203
4204 switch (atio->u.raw.entry_type) {
4205 case ATIO_TYPE7:
4206 ql_dbg(ql_dbg_tgt, vha, 0xe02d,
f83adb61 4207 "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		 4208 vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
4209 atio->u.isp24.fcp_cmnd.rddata,
4210 atio->u.isp24.fcp_cmnd.wrdata,
f83adb61 4211 atio->u.isp24.fcp_cmnd.cdb[0],
2d70c103
NB		 4212 atio->u.isp24.fcp_cmnd.add_cdb_len,
4213 be32_to_cpu(get_unaligned((uint32_t *)
4214 &atio->u.isp24.fcp_cmnd.add_cdb[
4215 atio->u.isp24.fcp_cmnd.add_cdb_len])),
4216 atio->u.isp24.fcp_hdr.s_id[0],
4217 atio->u.isp24.fcp_hdr.s_id[1],
4218 atio->u.isp24.fcp_hdr.s_id[2]);
4219
4220 if (unlikely(atio->u.isp24.exchange_addr ==
4221 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
4222 ql_dbg(ql_dbg_tgt, vha, 0xe058,
4223 "qla_target(%d): ATIO_TYPE7 "
4224 "received with UNKNOWN exchange address, "
4225 "sending QUEUE_FULL\n", vha->vp_idx);
4226 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
4227 break;
4228 }
4229 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
4230 rc = qlt_handle_cmd_for_atio(vha, atio);
4231 else
4232 rc = qlt_handle_task_mgmt(vha, atio);
4233 if (unlikely(rc != 0)) {
4234 if (rc == -ESRCH) {
4235#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4236 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4237#else
4238 qlt_send_term_exchange(vha, NULL, atio, 1);
4239#endif
4240 } else {
4241 if (tgt->tgt_stop) {
4242 ql_dbg(ql_dbg_tgt, vha, 0xe059,
4243 "qla_target: Unable to send "
4244 "command to target for req, "
4245 "ignoring.\n");
4246 } else {
4247 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
4248 "qla_target(%d): Unable to send "
4249 "command to target, sending BUSY "
4250 "status.\n", vha->vp_idx);
4251 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4252 }
4253 }
4254 }
4255 break;
4256
4257 case IMMED_NOTIFY_TYPE:
4258 {
4259 if (unlikely(atio->u.isp2x.entry_status != 0)) {
4260 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
4261 "qla_target(%d): Received ATIO packet %x "
4262 "with error status %x\n", vha->vp_idx,
4263 atio->u.raw.entry_type,
4264 atio->u.isp2x.entry_status);
4265 break;
4266 }
4267 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
4268 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
4269 break;
4270 }
4271
4272 default:
4273 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
4274 "qla_target(%d): Received unknown ATIO atio "
4275 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
4276 break;
4277 }
4278
4279 tgt->irq_cmd_count--;
4280}
4281
4282/* ha->hardware_lock supposed to be held on entry */
4283/* called via callback from qla2xxx */
4284static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
4285{
4286 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4287 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4288
4289 if (unlikely(tgt == NULL)) {
4290 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
4291 "qla_target(%d): Response pkt %x received, but no "
4292 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
4293 return;
4294 }
4295
4296 ql_dbg(ql_dbg_tgt, vha, 0xe02f,
4297 "qla_target(%d): response pkt %p: T %02x C %02x S %02x "
4298 "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
4299 pkt->entry_count, pkt->entry_status, pkt->handle);
4300
4301 /*
4302 * In tgt_stop mode we also should allow all requests to pass.
4303 * Otherwise, some commands can stuck.
4304 */
4305
4306 tgt->irq_cmd_count++;
4307
4308 switch (pkt->entry_type) {
f83adb61 4309 case CTIO_CRC2:
2d70c103
NB		 4310 case CTIO_TYPE7:
4311 {
4312 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
f83adb61
QT		 4313 ql_dbg(ql_dbg_tgt, vha, 0xe030,
4314 "CTIO[0x%x] 12/CTIO7 7A/CRC2: instance %d\n",
4315 entry->entry_type, vha->vp_idx);
2d70c103
NB		 4316 qlt_do_ctio_completion(vha, entry->handle,
4317 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4318 entry);
4319 break;
4320 }
4321
4322 case ACCEPT_TGT_IO_TYPE:
4323 {
4324 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
4325 int rc;
4326 ql_dbg(ql_dbg_tgt, vha, 0xe031,
4327 "ACCEPT_TGT_IO instance %d status %04x "
4328 "lun %04x read/write %d data_length %04x "
4329 "target_id %02x rx_id %04x\n ", vha->vp_idx,
4330 le16_to_cpu(atio->u.isp2x.status),
4331 le16_to_cpu(atio->u.isp2x.lun),
4332 atio->u.isp2x.execution_codes,
4333 le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
4334 atio), atio->u.isp2x.rx_id);
4335 if (atio->u.isp2x.status !=
4336 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
4337 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
4338 "qla_target(%d): ATIO with error "
4339 "status %x received\n", vha->vp_idx,
4340 le16_to_cpu(atio->u.isp2x.status));
4341 break;
4342 }
4343 ql_dbg(ql_dbg_tgt, vha, 0xe032,
4344 "FCP CDB: 0x%02x, sizeof(cdb): %lu",
4345 atio->u.isp2x.cdb[0], (unsigned long
4346 int)sizeof(atio->u.isp2x.cdb));
4347
4348 rc = qlt_handle_cmd_for_atio(vha, atio);
4349 if (unlikely(rc != 0)) {
4350 if (rc == -ESRCH) {
4351#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4352 qlt_send_busy(vha, atio, 0);
4353#else
4354 qlt_send_term_exchange(vha, NULL, atio, 1);
4355#endif
4356 } else {
4357 if (tgt->tgt_stop) {
4358 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
4359 "qla_target: Unable to send "
4360 "command to target, sending TERM "
4361 "EXCHANGE for rsp\n");
4362 qlt_send_term_exchange(vha, NULL,
4363 atio, 1);
4364 } else {
4365 ql_dbg(ql_dbg_tgt, vha, 0xe060,
4366 "qla_target(%d): Unable to send "
4367 "command to target, sending BUSY "
4368 "status\n", vha->vp_idx);
4369 qlt_send_busy(vha, atio, 0);
4370 }
4371 }
4372 }
4373 }
4374 break;
4375
4376 case CONTINUE_TGT_IO_TYPE:
4377 {
4378 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4379 ql_dbg(ql_dbg_tgt, vha, 0xe033,
4380 "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
4381 qlt_do_ctio_completion(vha, entry->handle,
4382 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4383 entry);
4384 break;
4385 }
4386
4387 case CTIO_A64_TYPE:
4388 {
4389 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4390 ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
4391 vha->vp_idx);
4392 qlt_do_ctio_completion(vha, entry->handle,
4393 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4394 entry);
4395 break;
4396 }
4397
4398 case IMMED_NOTIFY_TYPE:
4399 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
4400 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
4401 break;
4402
4403 case NOTIFY_ACK_TYPE:
4404 if (tgt->notify_ack_expected > 0) {
4405 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
4406 ql_dbg(ql_dbg_tgt, vha, 0xe036,
4407 "NOTIFY_ACK seq %08x status %x\n",
4408 le16_to_cpu(entry->u.isp2x.seq_id),
4409 le16_to_cpu(entry->u.isp2x.status));
4410 tgt->notify_ack_expected--;
4411 if (entry->u.isp2x.status !=
4412 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
4413 ql_dbg(ql_dbg_tgt, vha, 0xe061,
4414 "qla_target(%d): NOTIFY_ACK "
4415 "failed %x\n", vha->vp_idx,
4416 le16_to_cpu(entry->u.isp2x.status));
4417 }
4418 } else {
4419 ql_dbg(ql_dbg_tgt, vha, 0xe062,
4420 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
4421 vha->vp_idx);
4422 }
4423 break;
4424
4425 case ABTS_RECV_24XX:
4426 ql_dbg(ql_dbg_tgt, vha, 0xe037,
4427 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
4428 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
4429 break;
4430
4431 case ABTS_RESP_24XX:
4432 if (tgt->abts_resp_expected > 0) {
4433 struct abts_resp_from_24xx_fw *entry =
4434 (struct abts_resp_from_24xx_fw *)pkt;
4435 ql_dbg(ql_dbg_tgt, vha, 0xe038,
4436 "ABTS_RESP_24XX: compl_status %x\n",
4437 entry->compl_status);
4438 tgt->abts_resp_expected--;
4439 if (le16_to_cpu(entry->compl_status) !=
4440 ABTS_RESP_COMPL_SUCCESS) {
4441 if ((entry->error_subcode1 == 0x1E) &&
4442 (entry->error_subcode2 == 0)) {
4443 /*
4444 * We've got a race here: aborted
4445 * exchange not terminated, i.e.
4446 * response for the aborted command was
4447 * sent between the abort request was
4448 * received and processed.
4449 * Unfortunately, the firmware has a
4450 * silly requirement that all aborted
4451 * exchanges must be explicitely
4452 * terminated, otherwise it refuses to
4453 * send responses for the abort
4454 * requests. So, we have to
4455 * (re)terminate the exchange and retry
4456 * the abort response.
4457 */
4458 qlt_24xx_retry_term_exchange(vha,
4459 entry);
4460 } else
4461 ql_dbg(ql_dbg_tgt, vha, 0xe063,
4462 "qla_target(%d): ABTS_RESP_24XX "
4463 "failed %x (subcode %x:%x)",
4464 vha->vp_idx, entry->compl_status,
4465 entry->error_subcode1,
4466 entry->error_subcode2);
4467 }
4468 } else {
4469 ql_dbg(ql_dbg_tgt, vha, 0xe064,
4470 "qla_target(%d): Unexpected ABTS_RESP_24XX "
4471 "received\n", vha->vp_idx);
4472 }
4473 break;
4474
4475 default:
4476 ql_dbg(ql_dbg_tgt, vha, 0xe065,
4477 "qla_target(%d): Received unknown response pkt "
4478 "type %x\n", vha->vp_idx, pkt->entry_type);
4479 break;
4480 }
4481
4482 tgt->irq_cmd_count--;
4483}
4484
4485/*
4486 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4487 */
4488void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
4489 uint16_t *mailbox)
4490{
4491 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4492 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 4493 int login_code;
2d70c103
NB		 4494
4495 ql_dbg(ql_dbg_tgt, vha, 0xe039,
4496 "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
4497 vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
4498 ha->operating_mode, ha->current_topology);
4499
4500 if (!ha->tgt.tgt_ops)
4501 return;
4502
4503 if (unlikely(tgt == NULL)) {
4504 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
4505 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
4506 return;
4507 }
4508
4509 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
4510 IS_QLA2100(ha))
4511 return;
4512 /*
4513 * In tgt_stop mode we also should allow all requests to pass.
4514 * Otherwise, some commands can stuck.
4515 */
4516
4517 tgt->irq_cmd_count++;
4518
4519 switch (code) {
4520 case MBA_RESET: /* Reset */
4521 case MBA_SYSTEM_ERR: /* System Error */
4522 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
4523 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
4524 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
4525 "qla_target(%d): System error async event %#x "
6efb3c0a 4526 "occurred", vha->vp_idx, code);
2d70c103
NB		 4527 break;
4528 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
4529 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4530 break;
4531
4532 case MBA_LOOP_UP:
4533 {
4534 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 4535 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 4536 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4537 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4538 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4539 if (tgt->link_reinit_iocb_pending) {
4540 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
4541 0, 0, 0, 0, 0, 0);
4542 tgt->link_reinit_iocb_pending = 0;
4543 }
4544 break;
4545 }
4546
4547 case MBA_LIP_OCCURRED:
4548 case MBA_LOOP_DOWN:
4549 case MBA_LIP_RESET:
4550 case MBA_RSCN_UPDATE:
4551 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 4552 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 4553 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4554 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4555 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4556 break;
4557
4558 case MBA_PORT_UPDATE:
4559 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
4560 "qla_target(%d): Port update async event %#x "
6efb3c0a 4561 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 4562 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4563 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4564 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
4565
4566 login_code = le16_to_cpu(mailbox[2]);
4567 if (login_code == 0x4)
2d70c103
NB		 4568 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
4569 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 4570 else if (login_code == 0x7)
2d70c103
NB		 4571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
4572 "Async MB 2: Port Logged Out\n");
4573 break;
4574
4575 default:
4576 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
6efb3c0a 4577 "qla_target(%d): Async event %#x occurred: "
4f1d0f19
AC		 4578 "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4579 code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4580 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4581 break;
4582 }
4583
4584 tgt->irq_cmd_count--;
4585}
4586
4587static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
4588 uint16_t loop_id)
4589{
4590 fc_port_t *fcport;
4591 int rc;
4592
4593 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
4594 if (!fcport) {
4595 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
4596 "qla_target(%d): Allocation of tmp FC port failed",
4597 vha->vp_idx);
4598 return NULL;
4599 }
4600
4601 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
4602
4603 fcport->loop_id = loop_id;
4604
4605 rc = qla2x00_get_port_database(vha, fcport, 0);
4606 if (rc != QLA_SUCCESS) {
4607 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
4608 "qla_target(%d): Failed to retrieve fcport "
4609 "information -- get_port_database() returned %x "
4610 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
4611 kfree(fcport);
4612 return NULL;
4613 }
4614
4615 return fcport;
4616}
4617
4618/* Must be called under tgt_mutex */
4619static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
4620 uint8_t *s_id)
4621{
2d70c103
NB		 4622 struct qla_tgt_sess *sess = NULL;
4623 fc_port_t *fcport = NULL;
4624 int rc, global_resets;
4625 uint16_t loop_id = 0;
4626
4627retry:
0e8cd71c
SK		 4628 global_resets =
4629 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 4630
4631 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
4632 if (rc != 0) {
4633 if ((s_id[0] == 0xFF) &&
4634 (s_id[1] == 0xFC)) {
4635 /*
4636 * This is Domain Controller, so it should be
4637 * OK to drop SCSI commands from it.
4638 */
4639 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
4640 "Unable to find initiator with S_ID %x:%x:%x",
4641 s_id[0], s_id[1], s_id[2]);
4642 } else
4643 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
4644 "qla_target(%d): Unable to find "
4645 "initiator with S_ID %x:%x:%x",
4646 vha->vp_idx, s_id[0], s_id[1],
4647 s_id[2]);
4648 return NULL;
4649 }
4650
4651 fcport = qlt_get_port_database(vha, loop_id);
4652 if (!fcport)
4653 return NULL;
4654
4655 if (global_resets !=
0e8cd71c 4656 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 4657 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
4658 "qla_target(%d): global reset during session discovery "
4659 "(counter was %d, new %d), retrying", vha->vp_idx,
4660 global_resets,
0e8cd71c
SK		 4661 atomic_read(&vha->vha_tgt.
4662 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 4663 goto retry;
4664 }
4665
4666 sess = qlt_create_sess(vha, fcport, true);
4667
4668 kfree(fcport);
4669 return sess;
4670}
4671
4672static void qlt_abort_work(struct qla_tgt *tgt,
4673 struct qla_tgt_sess_work_param *prm)
4674{
4675 struct scsi_qla_host *vha = tgt->vha;
4676 struct qla_hw_data *ha = vha->hw;
4677 struct qla_tgt_sess *sess = NULL;
4678 unsigned long flags;
4679 uint32_t be_s_id;
4680 uint8_t s_id[3];
4681 int rc;
4682
4683 spin_lock_irqsave(&ha->hardware_lock, flags);
4684
4685 if (tgt->tgt_stop)
4686 goto out_term;
4687
4688 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
4689 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
4690 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
4691
4692 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4693 (unsigned char *)&be_s_id);
4694 if (!sess) {
4695 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4696
0e8cd71c 4697 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4698 sess = qlt_make_local_sess(vha, s_id);
4699 /* sess has got an extra creation ref */
0e8cd71c 4700 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4701
4702 spin_lock_irqsave(&ha->hardware_lock, flags);
4703 if (!sess)
4704 goto out_term;
4705 } else {
4706 kref_get(&sess->se_sess->sess_kref);
4707 }
4708
4709 if (tgt->tgt_stop)
4710 goto out_term;
4711
4712 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4713 if (rc != 0)
4714 goto out_term;
2d70c103
NB		 4715
4716 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4717 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4718 return;
4719
4720out_term:
4721 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
2d70c103
NB		 4722 if (sess)
4723 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4724 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4725}
4726
4727static void qlt_tmr_work(struct qla_tgt *tgt,
4728 struct qla_tgt_sess_work_param *prm)
4729{
4730 struct atio_from_isp *a = &prm->tm_iocb2;
4731 struct scsi_qla_host *vha = tgt->vha;
4732 struct qla_hw_data *ha = vha->hw;
4733 struct qla_tgt_sess *sess = NULL;
4734 unsigned long flags;
4735 uint8_t *s_id = NULL; /* to hide compiler warnings */
4736 int rc;
4737 uint32_t lun, unpacked_lun;
4738 int lun_size, fn;
4739 void *iocb;
4740
4741 spin_lock_irqsave(&ha->hardware_lock, flags);
4742
4743 if (tgt->tgt_stop)
4744 goto out_term;
4745
4746 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4747 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4748 if (!sess) {
4749 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4750
0e8cd71c 4751 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4752 sess = qlt_make_local_sess(vha, s_id);
4753 /* sess has got an extra creation ref */
0e8cd71c 4754 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4755
4756 spin_lock_irqsave(&ha->hardware_lock, flags);
4757 if (!sess)
4758 goto out_term;
4759 } else {
4760 kref_get(&sess->se_sess->sess_kref);
4761 }
4762
4763 iocb = a;
4764 lun = a->u.isp24.fcp_cmnd.lun;
4765 lun_size = sizeof(lun);
4766 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4767 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4768
4769 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4770 if (rc != 0)
4771 goto out_term;
2d70c103
NB		 4772
4773 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4774 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4775 return;
4776
4777out_term:
4778 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
2d70c103
NB		 4779 if (sess)
4780 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4781 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4782}
4783
4784static void qlt_sess_work_fn(struct work_struct *work)
4785{
4786 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4787 struct scsi_qla_host *vha = tgt->vha;
4788 unsigned long flags;
4789
4790 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4791
4792 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4793 while (!list_empty(&tgt->sess_works_list)) {
4794 struct qla_tgt_sess_work_param *prm = list_entry(
4795 tgt->sess_works_list.next, typeof(*prm),
4796 sess_works_list_entry);
4797
4798 /*
4799 * This work can be scheduled on several CPUs at time, so we
4800 * must delete the entry to eliminate double processing
4801 */
4802 list_del(&prm->sess_works_list_entry);
4803
4804 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4805
4806 switch (prm->type) {
4807 case QLA_TGT_SESS_WORK_ABORT:
4808 qlt_abort_work(tgt, prm);
4809 break;
4810 case QLA_TGT_SESS_WORK_TM:
4811 qlt_tmr_work(tgt, prm);
4812 break;
4813 default:
4814 BUG_ON(1);
4815 break;
4816 }
4817
4818 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4819
4820 kfree(prm);
4821 }
4822 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4823}
4824
4825/* Must be called under tgt_host_action_mutex */
4826int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4827{
4828 struct qla_tgt *tgt;
4829
4830 if (!QLA_TGT_MODE_ENABLED())
4831 return 0;
4832
33c36c0a
AE		 4833 if (!IS_TGT_MODE_CAPABLE(ha)) {
4834 ql_log(ql_log_warn, base_vha, 0xe070,
4835 "This adapter does not support target mode.\n");
4836 return 0;
4837 }
4838
2d70c103 4839 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 4840 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 4841
0e8cd71c 4842 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 4843
4844 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4845 if (!tgt) {
4846 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4847 "Unable to allocate struct qla_tgt\n");
4848 return -ENOMEM;
4849 }
4850
4851 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4852 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4853
4854 tgt->ha = ha;
4855 tgt->vha = base_vha;
4856 init_waitqueue_head(&tgt->waitQ);
4857 INIT_LIST_HEAD(&tgt->sess_list);
4858 INIT_LIST_HEAD(&tgt->del_sess_list);
4859 INIT_DELAYED_WORK(&tgt->sess_del_work,
4860 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4861 spin_lock_init(&tgt->sess_work_lock);
4862 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4863 INIT_LIST_HEAD(&tgt->sess_works_list);
4864 spin_lock_init(&tgt->srr_lock);
4865 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4866 INIT_LIST_HEAD(&tgt->srr_imm_list);
4867 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4868 atomic_set(&tgt->tgt_global_resets_count, 0);
4869
0e8cd71c 4870 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 4871
4872 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4873 "qla_target(%d): using 64 Bit PCI addressing",
4874 base_vha->vp_idx);
4875 tgt->tgt_enable_64bit_addr = 1;
4876 /* 3 is reserved */
4877 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4878 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4879 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4880
ddb95145
NB		 4881 if (base_vha->fc_vport)
4882 return 0;
4883
2d70c103
NB		 4884 mutex_lock(&qla_tgt_mutex);
4885 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4886 mutex_unlock(&qla_tgt_mutex);
4887
4888 return 0;
4889}
4890
4891/* Must be called under tgt_host_action_mutex */
4892int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4893{
0e8cd71c 4894 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 4895 return 0;
4896
ddb95145
NB		 4897 if (vha->fc_vport) {
4898 qlt_release(vha->vha_tgt.qla_tgt);
4899 return 0;
4900 }
2d70c103 4901 mutex_lock(&qla_tgt_mutex);
0e8cd71c 4902 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 4903 mutex_unlock(&qla_tgt_mutex);
4904
4905 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4906 vha->host_no, ha);
0e8cd71c 4907 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 4908
4909 return 0;
4910}
4911
4912static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4913 unsigned char *b)
4914{
4915 int i;
4916
4917 pr_debug("qla2xxx HW vha->node_name: ");
4918 for (i = 0; i < WWN_SIZE; i++)
4919 pr_debug("%02x ", vha->node_name[i]);
4920 pr_debug("\n");
4921 pr_debug("qla2xxx HW vha->port_name: ");
4922 for (i = 0; i < WWN_SIZE; i++)
4923 pr_debug("%02x ", vha->port_name[i]);
4924 pr_debug("\n");
4925
4926 pr_debug("qla2xxx passed configfs WWPN: ");
4927 put_unaligned_be64(wwpn, b);
4928 for (i = 0; i < WWN_SIZE; i++)
4929 pr_debug("%02x ", b[i]);
4930 pr_debug("\n");
4931}
4932
4933/**
4934 * qla_tgt_lport_register - register lport with external module
4935 *
4936 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4937 * @wwpn: Passwd FC target WWPN
4938 * @callback: lport initialization callback for tcm_qla2xxx code
4939 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4940 */
49a47f2c
NB		 4941int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
4942 u64 npiv_wwpn, u64 npiv_wwnn,
4943 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 4944{
4945 struct qla_tgt *tgt;
4946 struct scsi_qla_host *vha;
4947 struct qla_hw_data *ha;
4948 struct Scsi_Host *host;
4949 unsigned long flags;
4950 int rc;
4951 u8 b[WWN_SIZE];
4952
4953 mutex_lock(&qla_tgt_mutex);
4954 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4955 vha = tgt->vha;
4956 ha = vha->hw;
4957
4958 host = vha->host;
4959 if (!host)
4960 continue;
4961
2d70c103
NB		 4962 if (!(host->hostt->supported_mode & MODE_TARGET))
4963 continue;
4964
4965 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 4966 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 4967 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4968 host->host_no);
4969 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4970 continue;
4971 }
ddb95145
NB		 4972 if (tgt->tgt_stop) {
4973 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
4974 host->host_no);
4975 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4976 continue;
4977 }
2d70c103
NB		 4978 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4979
4980 if (!scsi_host_get(host)) {
4981 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4982 "Unable to scsi_host_get() for"
4983 " qla2xxx scsi_host\n");
4984 continue;
4985 }
49a47f2c 4986 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 4987
4988 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4989 scsi_host_put(host);
4990 continue;
4991 }
49a47f2c
NB		 4992 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
4993 if (rc != 0)
4994 scsi_host_put(host);
4995
ddb95145 4996 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 4997 return rc;
4998 }
4999 mutex_unlock(&qla_tgt_mutex);
5000
5001 return -ENODEV;
5002}
5003EXPORT_SYMBOL(qlt_lport_register);
5004
5005/**
5006 * qla_tgt_lport_deregister - Degister lport
5007 *
5008 * @vha: Registered scsi_qla_host pointer
5009 */
5010void qlt_lport_deregister(struct scsi_qla_host *vha)
5011{
5012 struct qla_hw_data *ha = vha->hw;
5013 struct Scsi_Host *sh = vha->host;
5014 /*
5015 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
5016 */
0e8cd71c 5017 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 5018 ha->tgt.tgt_ops = NULL;
5019 /*
5020 * Release the Scsi_Host reference for the underlying qla2xxx host
5021 */
5022 scsi_host_put(sh);
5023}
5024EXPORT_SYMBOL(qlt_lport_deregister);
5025
5026/* Must be called under HW lock */
5027void qlt_set_mode(struct scsi_qla_host *vha)
5028{
5029 struct qla_hw_data *ha = vha->hw;
5030
5031 switch (ql2x_ini_mode) {
5032 case QLA2XXX_INI_MODE_DISABLED:
5033 case QLA2XXX_INI_MODE_EXCLUSIVE:
5034 vha->host->active_mode = MODE_TARGET;
5035 break;
5036 case QLA2XXX_INI_MODE_ENABLED:
5037 vha->host->active_mode |= MODE_TARGET;
5038 break;
5039 default:
5040 break;
5041 }
5042
5043 if (ha->tgt.ini_mode_force_reverse)
5044 qla_reverse_ini_mode(vha);
5045}
5046
5047/* Must be called under HW lock */
5048void qlt_clear_mode(struct scsi_qla_host *vha)
5049{
5050 struct qla_hw_data *ha = vha->hw;
5051
5052 switch (ql2x_ini_mode) {
5053 case QLA2XXX_INI_MODE_DISABLED:
5054 vha->host->active_mode = MODE_UNKNOWN;
5055 break;
5056 case QLA2XXX_INI_MODE_EXCLUSIVE:
5057 vha->host->active_mode = MODE_INITIATOR;
5058 break;
5059 case QLA2XXX_INI_MODE_ENABLED:
5060 vha->host->active_mode &= ~MODE_TARGET;
5061 break;
5062 default:
5063 break;
5064 }
5065
5066 if (ha->tgt.ini_mode_force_reverse)
5067 qla_reverse_ini_mode(vha);
5068}
5069
5070/*
5071 * qla_tgt_enable_vha - NO LOCK HELD
5072 *
5073 * host_reset, bring up w/ Target Mode Enabled
5074 */
5075void
5076qlt_enable_vha(struct scsi_qla_host *vha)
5077{
5078 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5079 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5080 unsigned long flags;
0e8cd71c 5081 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 5082
5083 if (!tgt) {
5084 ql_dbg(ql_dbg_tgt, vha, 0xe069,
5085 "Unable to locate qla_tgt pointer from"
5086 " struct qla_hw_data\n");
5087 dump_stack();
5088 return;
5089 }
5090
5091 spin_lock_irqsave(&ha->hardware_lock, flags);
5092 tgt->tgt_stopped = 0;
5093 qlt_set_mode(vha);
5094 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5095
0e8cd71c
SK		 5096 if (vha->vp_idx) {
5097 qla24xx_disable_vp(vha);
5098 qla24xx_enable_vp(vha);
5099 } else {
5100 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
5101 qla2xxx_wake_dpc(base_vha);
5102 qla2x00_wait_for_hba_online(base_vha);
5103 }
2d70c103
NB		 5104}
5105EXPORT_SYMBOL(qlt_enable_vha);
5106
5107/*
5108 * qla_tgt_disable_vha - NO LOCK HELD
5109 *
5110 * Disable Target Mode and reset the adapter
5111 */
5112void
5113qlt_disable_vha(struct scsi_qla_host *vha)
5114{
5115 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5116 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5117 unsigned long flags;
5118
5119 if (!tgt) {
5120 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
5121 "Unable to locate qla_tgt pointer from"
5122 " struct qla_hw_data\n");
5123 dump_stack();
5124 return;
5125 }
5126
5127 spin_lock_irqsave(&ha->hardware_lock, flags);
5128 qlt_clear_mode(vha);
5129 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5130
5131 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5132 qla2xxx_wake_dpc(vha);
5133 qla2x00_wait_for_hba_online(vha);
5134}
5135
5136/*
5137 * Called from qla_init.c:qla24xx_vport_create() contex to setup
5138 * the target mode specific struct scsi_qla_host and struct qla_hw_data
5139 * members.
5140 */
5141void
5142qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
5143{
5144 if (!qla_tgt_mode_enabled(vha))
5145 return;
5146
0e8cd71c
SK		 5147 vha->vha_tgt.qla_tgt = NULL;
5148
5149 mutex_init(&vha->vha_tgt.tgt_mutex);
5150 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5151
5152 qlt_clear_mode(vha);
5153
5154 /*
5155 * NOTE: Currently the value is kept the same for <24xx and
5156 * >=24xx ISPs. If it is necessary to change it,
5157 * the check should be added for specific ISPs,
5158 * assigning the value appropriately.
5159 */
5160 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 5161
5162 qlt_add_target(ha, vha);
2d70c103
NB		 5163}
5164
5165void
5166qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
5167{
5168 /*
5169 * FC-4 Feature bit 0 indicates target functionality to the name server.
5170 */
5171 if (qla_tgt_mode_enabled(vha)) {
5172 if (qla_ini_mode_enabled(vha))
5173 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
5174 else
5175 ct_req->req.rff_id.fc4_feature = BIT_0;
5176 } else if (qla_ini_mode_enabled(vha)) {
5177 ct_req->req.rff_id.fc4_feature = BIT_1;
5178 }
5179}
5180
5181/*
5182 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
5183 * @ha: HA context
5184 *
5185 * Beginning of ATIO ring has initialization control block already built
5186 * by nvram config routine.
5187 *
5188 * Returns 0 on success.
5189 */
5190void
5191qlt_init_atio_q_entries(struct scsi_qla_host *vha)
5192{
5193 struct qla_hw_data *ha = vha->hw;
5194 uint16_t cnt;
5195 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
5196
5197 if (!qla_tgt_mode_enabled(vha))
5198 return;
5199
5200 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
5201 pkt->u.raw.signature = ATIO_PROCESSED;
5202 pkt++;
5203 }
5204
5205}
5206
5207/*
5208 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
5209 * @ha: SCSI driver HA context
5210 */
5211void
5212qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
5213{
5214 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 5215 struct atio_from_isp *pkt;
5216 int cnt, i;
5217
5218 if (!vha->flags.online)
5219 return;
5220
5221 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
5222 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5223 cnt = pkt->u.raw.entry_count;
5224
5225 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
5226
5227 for (i = 0; i < cnt; i++) {
5228 ha->tgt.atio_ring_index++;
5229 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
5230 ha->tgt.atio_ring_index = 0;
5231 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
5232 } else
5233 ha->tgt.atio_ring_ptr++;
5234
5235 pkt->u.raw.signature = ATIO_PROCESSED;
5236 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5237 }
5238 wmb();
5239 }
5240
5241 /* Adjust ring index */
aa230bc5 5242 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 5243}
5244
5245void
aa230bc5 5246qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 5247{
5248 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 5249 if (!QLA_TGT_MODE_ENABLED())
5250 return;
2d70c103 5251
aa230bc5
AE		 5252 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
5253 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
5254 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
5255
5256 if (IS_ATIO_MSIX_CAPABLE(ha)) {
5257 struct qla_msix_entry *msix = &ha->msix_entries[2];
5258 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
5259
5260 icb->msix_atio = cpu_to_le16(msix->entry);
5261 ql_dbg(ql_dbg_init, vha, 0xf072,
5262 "Registering ICB vector 0x%x for atio que.\n",
5263 msix->entry);
2d70c103
NB		 5264 }
5265}
5266
5267void
5268qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
5269{
5270 struct qla_hw_data *ha = vha->hw;
5271
5272 if (qla_tgt_mode_enabled(vha)) {
5273 if (!ha->tgt.saved_set) {
5274 /* We save only once */
5275 ha->tgt.saved_exchange_count = nv->exchange_count;
5276 ha->tgt.saved_firmware_options_1 =
5277 nv->firmware_options_1;
5278 ha->tgt.saved_firmware_options_2 =
5279 nv->firmware_options_2;
5280 ha->tgt.saved_firmware_options_3 =
5281 nv->firmware_options_3;
5282 ha->tgt.saved_set = 1;
5283 }
5284
5285 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5286
5287 /* Enable target mode */
5288 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5289
5290 /* Disable ini mode, if requested */
5291 if (!qla_ini_mode_enabled(vha))
5292 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
5293
5294 /* Disable Full Login after LIP */
5295 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5296 /* Enable initial LIP */
5297 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5298 /* Enable FC tapes support */
5299 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5300 /* Disable Full Login after LIP */
5301 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5302 /* Enable target PRLI control */
5303 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5304 } else {
5305 if (ha->tgt.saved_set) {
5306 nv->exchange_count = ha->tgt.saved_exchange_count;
5307 nv->firmware_options_1 =
5308 ha->tgt.saved_firmware_options_1;
5309 nv->firmware_options_2 =
5310 ha->tgt.saved_firmware_options_2;
5311 nv->firmware_options_3 =
5312 ha->tgt.saved_firmware_options_3;
5313 }
5314 return;
5315 }
5316
5317 /* out-of-order frames reassembly */
5318 nv->firmware_options_3 |= BIT_6|BIT_9;
5319
5320 if (ha->tgt.enable_class_2) {
5321 if (vha->flags.init_done)
5322 fc_host_supported_classes(vha->host) =
5323 FC_COS_CLASS2 | FC_COS_CLASS3;
5324
5325 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5326 } else {
5327 if (vha->flags.init_done)
5328 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5329
5330 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5331 }
5332}
5333
5334void
5335qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
5336 struct init_cb_24xx *icb)
5337{
5338 struct qla_hw_data *ha = vha->hw;
5339
5340 if (ha->tgt.node_name_set) {
5341 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5342 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5343 }
5344}
5345
aa230bc5
AE		 5346void
5347qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
5348{
5349 struct qla_hw_data *ha = vha->hw;
5350
5351 if (!QLA_TGT_MODE_ENABLED())
5352 return;
5353
5354 if (qla_tgt_mode_enabled(vha)) {
5355 if (!ha->tgt.saved_set) {
5356 /* We save only once */
5357 ha->tgt.saved_exchange_count = nv->exchange_count;
5358 ha->tgt.saved_firmware_options_1 =
5359 nv->firmware_options_1;
5360 ha->tgt.saved_firmware_options_2 =
5361 nv->firmware_options_2;
5362 ha->tgt.saved_firmware_options_3 =
5363 nv->firmware_options_3;
5364 ha->tgt.saved_set = 1;
5365 }
5366
5367 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5368
5369 /* Enable target mode */
5370 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5371
5372 /* Disable ini mode, if requested */
5373 if (!qla_ini_mode_enabled(vha))
5374 nv->firmware_options_1 |=
5375 __constant_cpu_to_le32(BIT_5);
5376
5377 /* Disable Full Login after LIP */
5378 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5379 /* Enable initial LIP */
5380 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5381 /* Enable FC tapes support */
5382 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5383 /* Disable Full Login after LIP */
5384 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5385 /* Enable target PRLI control */
5386 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5387 } else {
5388 if (ha->tgt.saved_set) {
5389 nv->exchange_count = ha->tgt.saved_exchange_count;
5390 nv->firmware_options_1 =
5391 ha->tgt.saved_firmware_options_1;
5392 nv->firmware_options_2 =
5393 ha->tgt.saved_firmware_options_2;
5394 nv->firmware_options_3 =
5395 ha->tgt.saved_firmware_options_3;
5396 }
5397 return;
5398 }
5399
5400 /* out-of-order frames reassembly */
5401 nv->firmware_options_3 |= BIT_6|BIT_9;
5402
5403 if (ha->tgt.enable_class_2) {
5404 if (vha->flags.init_done)
5405 fc_host_supported_classes(vha->host) =
5406 FC_COS_CLASS2 | FC_COS_CLASS3;
5407
5408 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5409 } else {
5410 if (vha->flags.init_done)
5411 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5412
5413 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5414 }
5415}
5416
5417void
5418qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
5419 struct init_cb_81xx *icb)
5420{
5421 struct qla_hw_data *ha = vha->hw;
5422
5423 if (!QLA_TGT_MODE_ENABLED())
5424 return;
5425
5426 if (ha->tgt.node_name_set) {
5427 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5428 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5429 }
5430}
5431
5432void
5433qlt_83xx_iospace_config(struct qla_hw_data *ha)
5434{
5435 if (!QLA_TGT_MODE_ENABLED())
5436 return;
5437
5438 ha->msix_count += 1; /* For ATIO Q */
5439}
5440
2d70c103
NB		 5441int
5442qlt_24xx_process_response_error(struct scsi_qla_host *vha,
5443 struct sts_entry_24xx *pkt)
5444{
5445 switch (pkt->entry_type) {
5446 case ABTS_RECV_24XX:
5447 case ABTS_RESP_24XX:
5448 case CTIO_TYPE7:
5449 case NOTIFY_ACK_TYPE:
f83adb61 5450 case CTIO_CRC2:
2d70c103
NB		 5451 return 1;
5452 default:
5453 return 0;
5454 }
5455}
5456
5457void
5458qlt_modify_vp_config(struct scsi_qla_host *vha,
5459 struct vp_config_entry_24xx *vpmod)
5460{
5461 if (qla_tgt_mode_enabled(vha))
5462 vpmod->options_idx1 &= ~BIT_5;
5463 /* Disable ini mode, if requested */
5464 if (!qla_ini_mode_enabled(vha))
5465 vpmod->options_idx1 &= ~BIT_4;
5466}
5467
5468void
5469qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
5470{
5471 if (!QLA_TGT_MODE_ENABLED())
5472 return;
5473
aa230bc5
AE		 5474 if (ha->mqenable || IS_QLA83XX(ha)) {
5475 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
5476 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
5477 } else {
5478 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
5479 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
5480 }
5481
0e8cd71c
SK		 5482 mutex_init(&base_vha->vha_tgt.tgt_mutex);
5483 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5484 qlt_clear_mode(base_vha);
5485}
5486
aa230bc5
AE		 5487irqreturn_t
5488qla83xx_msix_atio_q(int irq, void *dev_id)
5489{
5490 struct rsp_que *rsp;
5491 scsi_qla_host_t *vha;
5492 struct qla_hw_data *ha;
5493 unsigned long flags;
5494
5495 rsp = (struct rsp_que *) dev_id;
5496 ha = rsp->hw;
5497 vha = pci_get_drvdata(ha->pdev);
5498
5499 spin_lock_irqsave(&ha->hardware_lock, flags);
5500
5501 qlt_24xx_process_atio_queue(vha);
5502 qla24xx_process_response_queue(vha, rsp);
5503
5504 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5505
5506 return IRQ_HANDLED;
5507}
5508
2d70c103
NB		 5509int
5510qlt_mem_alloc(struct qla_hw_data *ha)
5511{
5512 if (!QLA_TGT_MODE_ENABLED())
5513 return 0;
5514
5515 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
5516 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
5517 if (!ha->tgt.tgt_vp_map)
5518 return -ENOMEM;
5519
5520 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
5521 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
5522 &ha->tgt.atio_dma, GFP_KERNEL);
5523 if (!ha->tgt.atio_ring) {
5524 kfree(ha->tgt.tgt_vp_map);
5525 return -ENOMEM;
5526 }
5527 return 0;
5528}
5529
5530void
5531qlt_mem_free(struct qla_hw_data *ha)
5532{
5533 if (!QLA_TGT_MODE_ENABLED())
5534 return;
5535
5536 if (ha->tgt.atio_ring) {
5537 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
5538 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
5539 ha->tgt.atio_dma);
5540 }
5541 kfree(ha->tgt.tgt_vp_map);
5542}
5543
5544/* vport_slock to be held by the caller */
5545void
5546qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
5547{
5548 if (!QLA_TGT_MODE_ENABLED())
5549 return;
5550
5551 switch (cmd) {
5552 case SET_VP_IDX:
5553 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
5554 break;
5555 case SET_AL_PA:
5556 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
5557 break;
5558 case RESET_VP_IDX:
5559 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
5560 break;
5561 case RESET_AL_PA:
5562 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
5563 break;
5564 }
5565}
5566
5567static int __init qlt_parse_ini_mode(void)
5568{
5569 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
5570 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
5571 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
5572 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
5573 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
5574 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
5575 else
5576 return false;
5577
5578 return true;
5579}
5580
5581int __init qlt_init(void)
5582{
5583 int ret;
5584
5585 if (!qlt_parse_ini_mode()) {
5586 ql_log(ql_log_fatal, NULL, 0xe06b,
5587 "qlt_parse_ini_mode() failed\n");
5588 return -EINVAL;
5589 }
5590
5591 if (!QLA_TGT_MODE_ENABLED())
5592 return 0;
5593
2d70c103
NB		 5594 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
5595 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
5596 qla_tgt_mgmt_cmd), 0, NULL);
5597 if (!qla_tgt_mgmt_cmd_cachep) {
5598 ql_log(ql_log_fatal, NULL, 0xe06d,
5599 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 5600 return -ENOMEM;
2d70c103
NB		 5601 }
5602
5603 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
5604 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
5605 if (!qla_tgt_mgmt_cmd_mempool) {
5606 ql_log(ql_log_fatal, NULL, 0xe06e,
5607 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
5608 ret = -ENOMEM;
5609 goto out_mgmt_cmd_cachep;
5610 }
5611
5612 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
5613 if (!qla_tgt_wq) {
5614 ql_log(ql_log_fatal, NULL, 0xe06f,
5615 "alloc_workqueue for qla_tgt_wq failed\n");
5616 ret = -ENOMEM;
5617 goto out_cmd_mempool;
5618 }
5619 /*
5620 * Return 1 to signal that initiator-mode is being disabled
5621 */
5622 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
5623
5624out_cmd_mempool:
5625 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5626out_mgmt_cmd_cachep:
5627 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 5628 return ret;
5629}
5630
5631void qlt_exit(void)
5632{
5633 if (!QLA_TGT_MODE_ENABLED())
5634 return;
5635
5636 destroy_workqueue(qla_tgt_wq);
5637 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5638 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 5639}
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