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bnx2fc: Improve stats update mechanism
[deliverable/linux.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
45static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
46module_param(qlini_mode, charp, S_IRUGO);
47MODULE_PARM_DESC(qlini_mode,
48 "Determines when initiator mode will be enabled. Possible values: "
49 "\"exclusive\" - initiator mode will be enabled on load, "
50 "disabled on enabling target mode and then on disabling target mode "
51 "enabled back; "
52 "\"disabled\" - initiator mode will never be enabled; "
53 "\"enabled\" (default) - initiator mode will always stay enabled.");
54
aa230bc5 55int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103
NB		 56
57/*
58 * From scsi/fc/fc_fcp.h
59 */
60enum fcp_resp_rsp_codes {
61 FCP_TMF_CMPL = 0,
62 FCP_DATA_LEN_INVALID = 1,
63 FCP_CMND_FIELDS_INVALID = 2,
64 FCP_DATA_PARAM_MISMATCH = 3,
65 FCP_TMF_REJECTED = 4,
66 FCP_TMF_FAILED = 5,
67 FCP_TMF_INVALID_LUN = 9,
68};
69
70/*
71 * fc_pri_ta from scsi/fc/fc_fcp.h
72 */
73#define FCP_PTA_SIMPLE 0 /* simple task attribute */
74#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
75#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 76#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 77#define FCP_PTA_MASK 7 /* mask for task attribute field */
78#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
79#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
80
81/*
82 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
83 * must be called under HW lock and could unlock/lock it inside.
84 * It isn't an issue, since in the current implementation on the time when
85 * those functions are called:
86 *
87 * - Either context is IRQ and only IRQ handler can modify HW data,
88 * including rings related fields,
89 *
90 * - Or access to target mode variables from struct qla_tgt doesn't
91 * cross those functions boundaries, except tgt_stop, which
92 * additionally protected by irq_cmd_count.
93 */
94/* Predefs for callbacks handed to qla2xxx LLD */
95static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
96 struct atio_from_isp *pkt);
97static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
98static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
99 int fn, void *iocb, int flags);
100static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
101 *cmd, struct atio_from_isp *atio, int ha_locked);
102static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
103 struct qla_tgt_srr_imm *imm, int ha_lock);
104/*
105 * Global Variables
106 */
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);
1131 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
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;
1265
1266 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1267 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1268 ha, atio, resp_code);
1269
1270 /* Send marker if required */
1271 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1272 return;
1273
1274 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1275 if (ctio == NULL) {
1276 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1277 "qla_target(%d): %s failed: unable to allocate "
1278 "request packet\n", ha->vp_idx, __func__);
1279 return;
1280 }
1281
1282 ctio->entry_type = CTIO_TYPE7;
1283 ctio->entry_count = 1;
1284 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1285 ctio->nport_handle = mcmd->sess->loop_id;
1286 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1287 ctio->vp_index = ha->vp_idx;
1288 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1289 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1290 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1291 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1292 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1293 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1294 CTIO7_FLAGS_SEND_STATUS);
1295 ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1296 ctio->u.status1.scsi_status =
1297 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1298 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
e4b11b89 1299 ctio->u.status1.sense_data[0] = resp_code;
2d70c103
NB		 1300
1301 qla2x00_start_iocbs(ha, ha->req);
1302}
1303
1304void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1305{
1306 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1307}
1308EXPORT_SYMBOL(qlt_free_mcmd);
1309
1310/* callback from target fabric module code */
1311void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1312{
1313 struct scsi_qla_host *vha = mcmd->sess->vha;
1314 struct qla_hw_data *ha = vha->hw;
1315 unsigned long flags;
1316
1317 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1318 "TM response mcmd (%p) status %#x state %#x",
1319 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1320
1321 spin_lock_irqsave(&ha->hardware_lock, flags);
1322 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1323 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1324 0, 0, 0, 0, 0, 0);
1325 else {
1326 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1327 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1328 mcmd->fc_tm_rsp, false);
1329 else
1330 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1331 mcmd->fc_tm_rsp);
1332 }
1333 /*
1334 * Make the callback for ->free_mcmd() to queue_work() and invoke
1335 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1336 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1337 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1338 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1339 * qlt_xmit_tm_rsp() returns here..
1340 */
1341 ha->tgt.tgt_ops->free_mcmd(mcmd);
1342 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1343}
1344EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1345
1346/* No locks */
1347static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1348{
1349 struct qla_tgt_cmd *cmd = prm->cmd;
1350
1351 BUG_ON(cmd->sg_cnt == 0);
1352
1353 prm->sg = (struct scatterlist *)cmd->sg;
1354 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1355 cmd->sg_cnt, cmd->dma_data_direction);
1356 if (unlikely(prm->seg_cnt == 0))
1357 goto out_err;
1358
1359 prm->cmd->sg_mapped = 1;
1360
f83adb61
QT		 1361 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1362 /*
1363 * If greater than four sg entries then we need to allocate
1364 * the continuation entries
1365 */
1366 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1367 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1368 prm->tgt->datasegs_per_cmd,
1369 prm->tgt->datasegs_per_cont);
1370 } else {
1371 /* DIF */
1372 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1373 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1374 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1375 prm->tot_dsds = prm->seg_cnt;
1376 } else
1377 prm->tot_dsds = prm->seg_cnt;
1378
1379 if (cmd->prot_sg_cnt) {
1380 prm->prot_sg = cmd->prot_sg;
1381 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1382 cmd->prot_sg, cmd->prot_sg_cnt,
1383 cmd->dma_data_direction);
1384 if (unlikely(prm->prot_seg_cnt == 0))
1385 goto out_err;
1386
1387 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1388 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1389 /* Dif Bundling not support here */
1390 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1391 cmd->blk_sz);
1392 prm->tot_dsds += prm->prot_seg_cnt;
1393 } else
1394 prm->tot_dsds += prm->prot_seg_cnt;
1395 }
1396 }
2d70c103
NB		 1397
1398 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
1399 prm->seg_cnt, prm->req_cnt);
1400 return 0;
1401
1402out_err:
1403 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1404 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1405 0, prm->cmd->sg_cnt);
1406 return -1;
1407}
1408
1409static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
1410 struct qla_tgt_cmd *cmd)
1411{
1412 struct qla_hw_data *ha = vha->hw;
1413
1414 BUG_ON(!cmd->sg_mapped);
1415 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1416 cmd->sg_mapped = 0;
f83adb61
QT		 1417
1418 if (cmd->prot_sg_cnt)
1419 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1420 cmd->dma_data_direction);
1421
1422 if (cmd->ctx_dsd_alloced)
1423 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1424
1425 if (cmd->ctx)
1426 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 1427}
1428
1429static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1430 uint32_t req_cnt)
1431{
1432 struct qla_hw_data *ha = vha->hw;
1433 device_reg_t __iomem *reg = ha->iobase;
1434 uint32_t cnt;
1435
1436 if (vha->req->cnt < (req_cnt + 2)) {
1437 cnt = (uint16_t)RD_REG_DWORD(&reg->isp24.req_q_out);
1438
1439 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
1440 "Request ring circled: cnt=%d, vha->->ring_index=%d, "
1441 "vha->req->cnt=%d, req_cnt=%d\n", cnt,
1442 vha->req->ring_index, vha->req->cnt, req_cnt);
1443 if (vha->req->ring_index < cnt)
1444 vha->req->cnt = cnt - vha->req->ring_index;
1445 else
1446 vha->req->cnt = vha->req->length -
1447 (vha->req->ring_index - cnt);
1448 }
1449
1450 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1451 ql_dbg(ql_dbg_tgt, vha, 0xe00b,
1452 "qla_target(%d): There is no room in the "
1453 "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
1454 "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
1455 vha->req->cnt, req_cnt);
1456 return -EAGAIN;
1457 }
1458 vha->req->cnt -= req_cnt;
1459
1460 return 0;
1461}
1462
1463/*
1464 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1465 */
1466static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1467{
1468 /* Adjust ring index. */
1469 vha->req->ring_index++;
1470 if (vha->req->ring_index == vha->req->length) {
1471 vha->req->ring_index = 0;
1472 vha->req->ring_ptr = vha->req->ring;
1473 } else {
1474 vha->req->ring_ptr++;
1475 }
1476 return (cont_entry_t *)vha->req->ring_ptr;
1477}
1478
1479/* ha->hardware_lock supposed to be held on entry */
1480static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1481{
1482 struct qla_hw_data *ha = vha->hw;
1483 uint32_t h;
1484
1485 h = ha->tgt.current_handle;
1486 /* always increment cmd handle */
1487 do {
1488 ++h;
8d93f550 1489 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 1490 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1491 if (h == ha->tgt.current_handle) {
1492 ql_dbg(ql_dbg_tgt, vha, 0xe04e,
1493 "qla_target(%d): Ran out of "
1494 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1495 h = QLA_TGT_NULL_HANDLE;
1496 break;
1497 }
1498 } while ((h == QLA_TGT_NULL_HANDLE) ||
1499 (h == QLA_TGT_SKIP_HANDLE) ||
1500 (ha->tgt.cmds[h-1] != NULL));
1501
1502 if (h != QLA_TGT_NULL_HANDLE)
1503 ha->tgt.current_handle = h;
1504
1505 return h;
1506}
1507
1508/* ha->hardware_lock supposed to be held on entry */
1509static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1510 struct scsi_qla_host *vha)
1511{
1512 uint32_t h;
1513 struct ctio7_to_24xx *pkt;
1514 struct qla_hw_data *ha = vha->hw;
1515 struct atio_from_isp *atio = &prm->cmd->atio;
1516
1517 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1518 prm->pkt = pkt;
1519 memset(pkt, 0, sizeof(*pkt));
1520
1521 pkt->entry_type = CTIO_TYPE7;
1522 pkt->entry_count = (uint8_t)prm->req_cnt;
1523 pkt->vp_index = vha->vp_idx;
1524
1525 h = qlt_make_handle(vha);
1526 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1527 /*
1528 * CTIO type 7 from the firmware doesn't provide a way to
1529 * know the initiator's LOOP ID, hence we can't find
1530 * the session and, so, the command.
1531 */
1532 return -EAGAIN;
1533 } else
1534 ha->tgt.cmds[h-1] = prm->cmd;
1535
1536 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1537 pkt->nport_handle = prm->cmd->loop_id;
1538 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1539 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1540 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1541 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1542 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1543 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
1544 pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
1545 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1546
1547 ql_dbg(ql_dbg_tgt, vha, 0xe00c,
1548 "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
1549 vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT,
1550 le16_to_cpu(pkt->u.status0.ox_id));
1551 return 0;
1552}
1553
1554/*
1555 * ha->hardware_lock supposed to be held on entry. We have already made sure
1556 * that there is sufficient amount of request entries to not drop it.
1557 */
1558static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1559 struct scsi_qla_host *vha)
1560{
1561 int cnt;
1562 uint32_t *dword_ptr;
1563 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1564
1565 /* Build continuation packets */
1566 while (prm->seg_cnt > 0) {
1567 cont_a64_entry_t *cont_pkt64 =
1568 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1569
1570 /*
1571 * Make sure that from cont_pkt64 none of
1572 * 64-bit specific fields used for 32-bit
1573 * addressing. Cast to (cont_entry_t *) for
1574 * that.
1575 */
1576
1577 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1578
1579 cont_pkt64->entry_count = 1;
1580 cont_pkt64->sys_define = 0;
1581
1582 if (enable_64bit_addressing) {
1583 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1584 dword_ptr =
1585 (uint32_t *)&cont_pkt64->dseg_0_address;
1586 } else {
1587 cont_pkt64->entry_type = CONTINUE_TYPE;
1588 dword_ptr =
1589 (uint32_t *)&((cont_entry_t *)
1590 cont_pkt64)->dseg_0_address;
1591 }
1592
1593 /* Load continuation entry data segments */
1594 for (cnt = 0;
1595 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1596 cnt++, prm->seg_cnt--) {
1597 *dword_ptr++ =
1598 cpu_to_le32(pci_dma_lo32
1599 (sg_dma_address(prm->sg)));
1600 if (enable_64bit_addressing) {
1601 *dword_ptr++ =
1602 cpu_to_le32(pci_dma_hi32
1603 (sg_dma_address
1604 (prm->sg)));
1605 }
1606 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1607
1608 ql_dbg(ql_dbg_tgt, vha, 0xe00d,
1609 "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
1610 (long long unsigned int)
1611 pci_dma_hi32(sg_dma_address(prm->sg)),
1612 (long long unsigned int)
1613 pci_dma_lo32(sg_dma_address(prm->sg)),
1614 (int)sg_dma_len(prm->sg));
1615
1616 prm->sg = sg_next(prm->sg);
1617 }
1618 }
1619}
1620
1621/*
1622 * ha->hardware_lock supposed to be held on entry. We have already made sure
1623 * that there is sufficient amount of request entries to not drop it.
1624 */
1625static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1626 struct scsi_qla_host *vha)
1627{
1628 int cnt;
1629 uint32_t *dword_ptr;
1630 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1631 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1632
1633 ql_dbg(ql_dbg_tgt, vha, 0xe00e,
1634 "iocb->scsi_status=%x, iocb->flags=%x\n",
1635 le16_to_cpu(pkt24->u.status0.scsi_status),
1636 le16_to_cpu(pkt24->u.status0.flags));
1637
1638 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1639
1640 /* Setup packet address segment pointer */
1641 dword_ptr = pkt24->u.status0.dseg_0_address;
1642
1643 /* Set total data segment count */
1644 if (prm->seg_cnt)
1645 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1646
1647 if (prm->seg_cnt == 0) {
1648 /* No data transfer */
1649 *dword_ptr++ = 0;
1650 *dword_ptr = 0;
1651 return;
1652 }
1653
1654 /* If scatter gather */
1655 ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
1656
1657 /* Load command entry data segments */
1658 for (cnt = 0;
1659 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1660 cnt++, prm->seg_cnt--) {
1661 *dword_ptr++ =
1662 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1663 if (enable_64bit_addressing) {
1664 *dword_ptr++ =
1665 cpu_to_le32(pci_dma_hi32(
1666 sg_dma_address(prm->sg)));
1667 }
1668 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1669
1670 ql_dbg(ql_dbg_tgt, vha, 0xe010,
1671 "S/G Segment phys_addr=%llx:%llx, len=%d\n",
1672 (long long unsigned int)pci_dma_hi32(sg_dma_address(
1673 prm->sg)),
1674 (long long unsigned int)pci_dma_lo32(sg_dma_address(
1675 prm->sg)),
1676 (int)sg_dma_len(prm->sg));
1677
1678 prm->sg = sg_next(prm->sg);
1679 }
1680
1681 qlt_load_cont_data_segments(prm, vha);
1682}
1683
1684static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1685{
1686 return cmd->bufflen > 0;
1687}
1688
1689/*
1690 * Called without ha->hardware_lock held
1691 */
1692static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1693 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1694 uint32_t *full_req_cnt)
1695{
1696 struct qla_tgt *tgt = cmd->tgt;
1697 struct scsi_qla_host *vha = tgt->vha;
1698 struct qla_hw_data *ha = vha->hw;
1699 struct se_cmd *se_cmd = &cmd->se_cmd;
1700
1701 if (unlikely(cmd->aborted)) {
1702 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1703 "qla_target(%d): terminating exchange "
1704 "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
1705 se_cmd, cmd->tag);
1706
1707 cmd->state = QLA_TGT_STATE_ABORTED;
1708
1709 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1710
1711 /* !! At this point cmd could be already freed !! */
1712 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1713 }
1714
f83adb61
QT		 1715 ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u ox_id %04x\n",
1716 vha->vp_idx, cmd->tag,
1717 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103
NB		 1718
1719 prm->cmd = cmd;
1720 prm->tgt = tgt;
1721 prm->rq_result = scsi_status;
1722 prm->sense_buffer = &cmd->sense_buffer[0];
1723 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1724 prm->sg = NULL;
1725 prm->seg_cnt = -1;
1726 prm->req_cnt = 1;
1727 prm->add_status_pkt = 0;
1728
1729 ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
1730 prm->rq_result, xmit_type);
1731
1732 /* Send marker if required */
1733 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1734 return -EFAULT;
1735
1736 ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
1737
1738 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1739 if (qlt_pci_map_calc_cnt(prm) != 0)
1740 return -EAGAIN;
1741 }
1742
1743 *full_req_cnt = prm->req_cnt;
1744
1745 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1746 prm->residual = se_cmd->residual_count;
1747 ql_dbg(ql_dbg_tgt, vha, 0xe014,
1748 "Residual underflow: %d (tag %d, "
1749 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1750 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1751 cmd->bufflen, prm->rq_result);
1752 prm->rq_result |= SS_RESIDUAL_UNDER;
1753 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1754 prm->residual = se_cmd->residual_count;
1755 ql_dbg(ql_dbg_tgt, vha, 0xe015,
1756 "Residual overflow: %d (tag %d, "
1757 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1758 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1759 cmd->bufflen, prm->rq_result);
1760 prm->rq_result |= SS_RESIDUAL_OVER;
1761 }
1762
1763 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1764 /*
1765 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1766 * ignored in *xmit_response() below
1767 */
1768 if (qlt_has_data(cmd)) {
1769 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1770 (IS_FWI2_CAPABLE(ha) &&
1771 (prm->rq_result != 0))) {
1772 prm->add_status_pkt = 1;
1773 (*full_req_cnt)++;
1774 }
1775 }
1776 }
1777
1778 ql_dbg(ql_dbg_tgt, vha, 0xe016,
1779 "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
1780 prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
1781
1782 return 0;
1783}
1784
1785static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1786 struct qla_tgt_cmd *cmd, int sending_sense)
1787{
1788 if (ha->tgt.enable_class_2)
1789 return 0;
1790
1791 if (sending_sense)
1792 return cmd->conf_compl_supported;
1793 else
1794 return ha->tgt.enable_explicit_conf &&
1795 cmd->conf_compl_supported;
1796}
1797
1798#ifdef CONFIG_QLA_TGT_DEBUG_SRR
1799/*
1800 * Original taken from the XFS code
1801 */
1802static unsigned long qlt_srr_random(void)
1803{
1804 static int Inited;
1805 static unsigned long RandomValue;
1806 static DEFINE_SPINLOCK(lock);
1807 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1808 register long rv;
1809 register long lo;
1810 register long hi;
1811 unsigned long flags;
1812
1813 spin_lock_irqsave(&lock, flags);
1814 if (!Inited) {
1815 RandomValue = jiffies;
1816 Inited = 1;
1817 }
1818 rv = RandomValue;
1819 hi = rv / 127773;
1820 lo = rv % 127773;
1821 rv = 16807 * lo - 2836 * hi;
1822 if (rv <= 0)
1823 rv += 2147483647;
1824 RandomValue = rv;
1825 spin_unlock_irqrestore(&lock, flags);
1826 return rv;
1827}
1828
1829static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1830{
1831#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1832 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1833 == 50) {
1834 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1835 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1836 "Dropping cmd %p (tag %d) status", cmd, cmd->tag);
1837 }
1838#endif
1839 /*
1840 * It's currently not possible to simulate SRRs for FCP_WRITE without
1841 * a physical link layer failure, so don't even try here..
1842 */
1843 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1844 return;
1845
1846 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1847 ((qlt_srr_random() % 100) == 20)) {
1848 int i, leave = 0;
1849 unsigned int tot_len = 0;
1850
1851 while (leave == 0)
1852 leave = qlt_srr_random() % cmd->sg_cnt;
1853
1854 for (i = 0; i < leave; i++)
1855 tot_len += cmd->sg[i].length;
1856
1857 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1858 "Cutting cmd %p (tag %d) buffer"
1859 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1860 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
1861 cmd->bufflen, cmd->sg_cnt);
1862
1863 cmd->bufflen = tot_len;
1864 cmd->sg_cnt = leave;
1865 }
1866
1867 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1868 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1869
1870 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1871 "Cutting cmd %p (tag %d) buffer head "
1872 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
1873 cmd->bufflen);
1874 if (offset == 0)
1875 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1876 else if (qlt_set_data_offset(cmd, offset)) {
1877 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1878 "qlt_set_data_offset() failed (tag %d)", cmd->tag);
1879 }
1880 }
1881}
1882#else
1883static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1884{}
1885#endif
1886
1887static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1888 struct qla_tgt_prm *prm)
1889{
1890 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1891 (uint32_t)sizeof(ctio->u.status1.sense_data));
1892 ctio->u.status0.flags |=
1893 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1894 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1895 ctio->u.status0.flags |= __constant_cpu_to_le16(
1896 CTIO7_FLAGS_EXPLICIT_CONFORM |
1897 CTIO7_FLAGS_CONFORM_REQ);
1898 }
1899 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1900 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1901 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1902 int i;
1903
1904 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1905 if (prm->cmd->se_cmd.scsi_status != 0) {
1906 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1907 "Skipping EXPLICIT_CONFORM and "
1908 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1909 "non GOOD status\n");
1910 goto skip_explict_conf;
1911 }
1912 ctio->u.status1.flags |= __constant_cpu_to_le16(
1913 CTIO7_FLAGS_EXPLICIT_CONFORM |
1914 CTIO7_FLAGS_CONFORM_REQ);
1915 }
1916skip_explict_conf:
1917 ctio->u.status1.flags &=
1918 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1919 ctio->u.status1.flags |=
1920 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1921 ctio->u.status1.scsi_status |=
1922 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1923 ctio->u.status1.sense_length =
1924 cpu_to_le16(prm->sense_buffer_len);
1925 for (i = 0; i < prm->sense_buffer_len/4; i++)
1926 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1927 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1928#if 0
1929 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
1930 static int q;
1931 if (q < 10) {
1932 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
1933 "qla_target(%d): %d bytes of sense "
1934 "lost", prm->tgt->ha->vp_idx,
1935 prm->sense_buffer_len % 4);
1936 q++;
1937 }
1938 }
1939#endif
1940 } else {
1941 ctio->u.status1.flags &=
1942 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1943 ctio->u.status1.flags |=
1944 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1945 ctio->u.status1.sense_length = 0;
1946 memset(ctio->u.status1.sense_data, 0,
1947 sizeof(ctio->u.status1.sense_data));
1948 }
1949
1950 /* Sense with len > 24, is it possible ??? */
1951}
1952
f83adb61
QT		 1953
1954
1955/* diff */
1956static inline int
1957qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
1958{
1959 /*
1960 * Uncomment when corresponding SCSI changes are done.
1961 *
1962 if (!sp->cmd->prot_chk)
1963 return 0;
1964 *
1965 */
1966 switch (se_cmd->prot_op) {
1967 case TARGET_PROT_DOUT_INSERT:
1968 case TARGET_PROT_DIN_STRIP:
1969 if (ql2xenablehba_err_chk >= 1)
1970 return 1;
1971 break;
1972 case TARGET_PROT_DOUT_PASS:
1973 case TARGET_PROT_DIN_PASS:
1974 if (ql2xenablehba_err_chk >= 2)
1975 return 1;
1976 break;
1977 case TARGET_PROT_DIN_INSERT:
1978 case TARGET_PROT_DOUT_STRIP:
1979 return 1;
1980 default:
1981 break;
1982 }
1983 return 0;
1984}
1985
1986/*
1987 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
1988 *
1989 */
1990static inline void
1991qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
1992{
1993 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
1994
1995 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
1996 * have been immplemented by TCM, before AppTag is avail.
1997 * Look for modesense_handlers[]
1998 */
c7ee3bd4 1999 ctx->app_tag = 0;
f83adb61
QT		 2000 ctx->app_tag_mask[0] = 0x0;
2001 ctx->app_tag_mask[1] = 0x0;
2002
2003 switch (se_cmd->prot_type) {
2004 case TARGET_DIF_TYPE0_PROT:
2005 /*
2006 * No check for ql2xenablehba_err_chk, as it would be an
2007 * I/O error if hba tag generation is not done.
2008 */
2009 ctx->ref_tag = cpu_to_le32(lba);
2010
2011 if (!qlt_hba_err_chk_enabled(se_cmd))
2012 break;
2013
2014 /* enable ALL bytes of the ref tag */
2015 ctx->ref_tag_mask[0] = 0xff;
2016 ctx->ref_tag_mask[1] = 0xff;
2017 ctx->ref_tag_mask[2] = 0xff;
2018 ctx->ref_tag_mask[3] = 0xff;
2019 break;
2020 /*
2021 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2022 * 16 bit app tag.
2023 */
2024 case TARGET_DIF_TYPE1_PROT:
2025 ctx->ref_tag = cpu_to_le32(lba);
2026
2027 if (!qlt_hba_err_chk_enabled(se_cmd))
2028 break;
2029
2030 /* enable ALL bytes of the ref tag */
2031 ctx->ref_tag_mask[0] = 0xff;
2032 ctx->ref_tag_mask[1] = 0xff;
2033 ctx->ref_tag_mask[2] = 0xff;
2034 ctx->ref_tag_mask[3] = 0xff;
2035 break;
2036 /*
2037 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2038 * match LBA in CDB + N
2039 */
2040 case TARGET_DIF_TYPE2_PROT:
2041 ctx->ref_tag = cpu_to_le32(lba);
2042
2043 if (!qlt_hba_err_chk_enabled(se_cmd))
2044 break;
2045
2046 /* enable ALL bytes of the ref tag */
2047 ctx->ref_tag_mask[0] = 0xff;
2048 ctx->ref_tag_mask[1] = 0xff;
2049 ctx->ref_tag_mask[2] = 0xff;
2050 ctx->ref_tag_mask[3] = 0xff;
2051 break;
2052
2053 /* For Type 3 protection: 16 bit GUARD only */
2054 case TARGET_DIF_TYPE3_PROT:
2055 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2056 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2057 break;
2058 }
2059}
2060
2061
2062static inline int
2063qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2064{
2065 uint32_t *cur_dsd;
2066 int sgc;
2067 uint32_t transfer_length = 0;
2068 uint32_t data_bytes;
2069 uint32_t dif_bytes;
2070 uint8_t bundling = 1;
2071 uint8_t *clr_ptr;
2072 struct crc_context *crc_ctx_pkt = NULL;
2073 struct qla_hw_data *ha;
2074 struct ctio_crc2_to_fw *pkt;
2075 dma_addr_t crc_ctx_dma;
2076 uint16_t fw_prot_opts = 0;
2077 struct qla_tgt_cmd *cmd = prm->cmd;
2078 struct se_cmd *se_cmd = &cmd->se_cmd;
2079 uint32_t h;
2080 struct atio_from_isp *atio = &prm->cmd->atio;
c7ee3bd4 2081 uint16_t t16;
f83adb61
QT		 2082
2083 sgc = 0;
2084 ha = vha->hw;
2085
2086 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2087 prm->pkt = pkt;
2088 memset(pkt, 0, sizeof(*pkt));
2089
2090 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2091 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2092 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2093 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2094
2095 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2096 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2097 bundling = 0;
2098
2099 /* Compute dif len and adjust data len to incude protection */
2100 data_bytes = cmd->bufflen;
2101 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2102
2103 switch (se_cmd->prot_op) {
2104 case TARGET_PROT_DIN_INSERT:
2105 case TARGET_PROT_DOUT_STRIP:
2106 transfer_length = data_bytes;
2107 data_bytes += dif_bytes;
2108 break;
2109
2110 case TARGET_PROT_DIN_STRIP:
2111 case TARGET_PROT_DOUT_INSERT:
2112 case TARGET_PROT_DIN_PASS:
2113 case TARGET_PROT_DOUT_PASS:
2114 transfer_length = data_bytes + dif_bytes;
2115 break;
2116
2117 default:
2118 BUG();
2119 break;
2120 }
2121
2122 if (!qlt_hba_err_chk_enabled(se_cmd))
2123 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2124 /* HBA error checking enabled */
2125 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2126 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2127 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2128 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2129 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2130 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2131 }
2132
2133 switch (se_cmd->prot_op) {
2134 case TARGET_PROT_DIN_INSERT:
2135 case TARGET_PROT_DOUT_INSERT:
2136 fw_prot_opts |= PO_MODE_DIF_INSERT;
2137 break;
2138 case TARGET_PROT_DIN_STRIP:
2139 case TARGET_PROT_DOUT_STRIP:
2140 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2141 break;
2142 case TARGET_PROT_DIN_PASS:
2143 case TARGET_PROT_DOUT_PASS:
2144 fw_prot_opts |= PO_MODE_DIF_PASS;
2145 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2146 break;
2147 default:/* Normal Request */
2148 fw_prot_opts |= PO_MODE_DIF_PASS;
2149 break;
2150 }
2151
2152
2153 /* ---- PKT ---- */
2154 /* Update entry type to indicate Command Type CRC_2 IOCB */
2155 pkt->entry_type = CTIO_CRC2;
2156 pkt->entry_count = 1;
2157 pkt->vp_index = vha->vp_idx;
2158
2159 h = qlt_make_handle(vha);
2160 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2161 /*
2162 * CTIO type 7 from the firmware doesn't provide a way to
2163 * know the initiator's LOOP ID, hence we can't find
2164 * the session and, so, the command.
2165 */
2166 return -EAGAIN;
2167 } else
2168 ha->tgt.cmds[h-1] = prm->cmd;
2169
2170
2171 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2172 pkt->nport_handle = prm->cmd->loop_id;
2173 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2174 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2175 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2176 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2177 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2178
2179 /* silence compile warning */
2180 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2181 pkt->ox_id = cpu_to_le16(t16);
2182
2183 t16 = (atio->u.isp24.attr << 9);
2184 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2185 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2186
2187 /* Set transfer direction */
2188 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2189 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2190 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2191 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2192
2193
2194 pkt->dseg_count = prm->tot_dsds;
2195 /* Fibre channel byte count */
2196 pkt->transfer_length = cpu_to_le32(transfer_length);
2197
2198
2199 /* ----- CRC context -------- */
2200
2201 /* Allocate CRC context from global pool */
2202 crc_ctx_pkt = cmd->ctx =
2203 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2204
2205 if (!crc_ctx_pkt)
2206 goto crc_queuing_error;
2207
2208 /* Zero out CTX area. */
2209 clr_ptr = (uint8_t *)crc_ctx_pkt;
2210 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2211
2212 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2213 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2214
2215 /* Set handle */
2216 crc_ctx_pkt->handle = pkt->handle;
2217
2218 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2219
2220 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2221 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2222 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2223
2224
2225 if (!bundling) {
2226 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2227 } else {
2228 /*
2229 * Configure Bundling if we need to fetch interlaving
2230 * protection PCI accesses
2231 */
2232 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2233 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2234 crc_ctx_pkt->u.bundling.dseg_count =
2235 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2236 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2237 }
2238
2239 /* Finish the common fields of CRC pkt */
2240 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2241 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2242 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
2243 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0);
2244
2245
2246 /* Walks data segments */
2247 pkt->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
2248
2249 if (!bundling && prm->prot_seg_cnt) {
2250 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2251 prm->tot_dsds, cmd))
2252 goto crc_queuing_error;
2253 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2254 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2255 goto crc_queuing_error;
2256
2257 if (bundling && prm->prot_seg_cnt) {
2258 /* Walks dif segments */
c7ee3bd4 2259 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2260
2261 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2262 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2263 prm->prot_seg_cnt, cmd))
2264 goto crc_queuing_error;
2265 }
2266 return QLA_SUCCESS;
2267
2268crc_queuing_error:
2269 /* Cleanup will be performed by the caller */
2270
2271 return QLA_FUNCTION_FAILED;
2272}
2273
2274
2d70c103
NB		 2275/*
2276 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2277 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2278 */
2279int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2280 uint8_t scsi_status)
2281{
2282 struct scsi_qla_host *vha = cmd->vha;
2283 struct qla_hw_data *ha = vha->hw;
2284 struct ctio7_to_24xx *pkt;
2285 struct qla_tgt_prm prm;
2286 uint32_t full_req_cnt = 0;
2287 unsigned long flags = 0;
2288 int res;
2289
2290 memset(&prm, 0, sizeof(prm));
2291 qlt_check_srr_debug(cmd, &xmit_type);
2292
2293 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 2294 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2295 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2296 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2297 &cmd->se_cmd);
2d70c103
NB		 2298
2299 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2300 &full_req_cnt);
2301 if (unlikely(res != 0)) {
2302 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
2303 return 0;
2304
2305 return res;
2306 }
2307
2308 spin_lock_irqsave(&ha->hardware_lock, flags);
2309
2310 /* Does F/W have an IOCBs for this request */
2311 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2312 if (unlikely(res))
2313 goto out_unmap_unlock;
2314
f83adb61
QT		 2315 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2316 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2317 else
2318 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103
NB		 2319 if (unlikely(res != 0))
2320 goto out_unmap_unlock;
2321
2322
2323 pkt = (struct ctio7_to_24xx *)prm.pkt;
2324
2325 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2326 pkt->u.status0.flags |=
2327 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2328 CTIO7_FLAGS_STATUS_MODE_0);
2329
f83adb61
QT		 2330 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2331 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2332
2333 if (prm.add_status_pkt == 0) {
2334 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2335 pkt->u.status0.scsi_status =
2336 cpu_to_le16(prm.rq_result);
2337 pkt->u.status0.residual =
2338 cpu_to_le32(prm.residual);
2339 pkt->u.status0.flags |= __constant_cpu_to_le16(
2340 CTIO7_FLAGS_SEND_STATUS);
2341 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2342 pkt->u.status0.flags |=
2343 __constant_cpu_to_le16(
2344 CTIO7_FLAGS_EXPLICIT_CONFORM |
2345 CTIO7_FLAGS_CONFORM_REQ);
2346 }
2347 }
2348
2349 } else {
2350 /*
2351 * We have already made sure that there is sufficient
2352 * amount of request entries to not drop HW lock in
2353 * req_pkt().
2354 */
2355 struct ctio7_to_24xx *ctio =
2356 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2357
2358 ql_dbg(ql_dbg_tgt, vha, 0xe019,
2359 "Building additional status packet\n");
2360
f83adb61
QT		 2361 /*
2362 * T10Dif: ctio_crc2_to_fw overlay ontop of
2363 * ctio7_to_24xx
2364 */
2d70c103 2365 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 2366 /* reset back to CTIO7 */
2d70c103 2367 ctio->entry_count = 1;
f83adb61 2368 ctio->entry_type = CTIO_TYPE7;
2d70c103
NB		 2369 ctio->dseg_count = 0;
2370 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
2371 CTIO7_FLAGS_DATA_IN);
2372
2373 /* Real finish is ctio_m1's finish */
2374 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
2375 pkt->u.status0.flags |= __constant_cpu_to_le16(
2376 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 2377
2378 /* qlt_24xx_init_ctio_to_isp will correct
2379 * all neccessary fields that's part of CTIO7.
2380 * There should be no residual of CTIO-CRC2 data.
2381 */
2d70c103
NB		 2382 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2383 &prm);
2384 pr_debug("Status CTIO7: %p\n", ctio);
2385 }
2386 } else
2387 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2388
2389
2390 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
2391
2392 ql_dbg(ql_dbg_tgt, vha, 0xe01a,
2393 "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
2394 pkt, scsi_status);
2395
2396 qla2x00_start_iocbs(vha, vha->req);
2397 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2398
2399 return 0;
2400
2401out_unmap_unlock:
2402 if (cmd->sg_mapped)
2403 qlt_unmap_sg(vha, cmd);
2404 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2405
2406 return res;
2407}
2408EXPORT_SYMBOL(qlt_xmit_response);
2409
2410int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2411{
2412 struct ctio7_to_24xx *pkt;
2413 struct scsi_qla_host *vha = cmd->vha;
2414 struct qla_hw_data *ha = vha->hw;
2415 struct qla_tgt *tgt = cmd->tgt;
2416 struct qla_tgt_prm prm;
2417 unsigned long flags;
2418 int res = 0;
2419
2420 memset(&prm, 0, sizeof(prm));
2421 prm.cmd = cmd;
2422 prm.tgt = tgt;
2423 prm.sg = NULL;
2424 prm.req_cnt = 1;
2425
2426 /* Send marker if required */
2427 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2428 return -EIO;
2429
f83adb61
QT		 2430 ql_dbg(ql_dbg_tgt, vha, 0xe01b,
2431 "%s: CTIO_start: vha(%d) se_cmd %p ox_id %04x\n",
2432 __func__, (int)vha->vp_idx, &cmd->se_cmd,
2433 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103
NB		 2434
2435 /* Calculate number of entries and segments required */
2436 if (qlt_pci_map_calc_cnt(&prm) != 0)
2437 return -EAGAIN;
2438
2439 spin_lock_irqsave(&ha->hardware_lock, flags);
2440
2441 /* Does F/W have an IOCBs for this request */
2442 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2443 if (res != 0)
2444 goto out_unlock_free_unmap;
f83adb61
QT		 2445 if (cmd->se_cmd.prot_op)
2446 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2447 else
2448 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 2449
2d70c103
NB		 2450 if (unlikely(res != 0))
2451 goto out_unlock_free_unmap;
2452 pkt = (struct ctio7_to_24xx *)prm.pkt;
2453 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2454 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 2455
2456 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2457 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2458
2459 cmd->state = QLA_TGT_STATE_NEED_DATA;
2460
2461 qla2x00_start_iocbs(vha, vha->req);
2462 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2463
2464 return res;
2465
2466out_unlock_free_unmap:
2467 if (cmd->sg_mapped)
2468 qlt_unmap_sg(vha, cmd);
2469 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2470
2471 return res;
2472}
2473EXPORT_SYMBOL(qlt_rdy_to_xfer);
2474
f83adb61
QT		 2475
2476/*
2477 * Checks the guard or meta-data for the type of error
2478 * detected by the HBA.
2479 */
2480static inline int
2481qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2482 struct ctio_crc_from_fw *sts)
2483{
2484 uint8_t *ap = &sts->actual_dif[0];
2485 uint8_t *ep = &sts->expected_dif[0];
2486 uint32_t e_ref_tag, a_ref_tag;
2487 uint16_t e_app_tag, a_app_tag;
2488 uint16_t e_guard, a_guard;
2489 uint64_t lba = cmd->se_cmd.t_task_lba;
2490
2491 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2492 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2493 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2494
2495 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2496 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2497 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2498
2499 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2500 "iocb(s) %p Returned STATUS.\n", sts);
2501
2502 ql_dbg(ql_dbg_tgt, vha, 0xf075,
2503 "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",
2504 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2505 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2506
2507 /*
2508 * Ignore sector if:
2509 * For type 3: ref & app tag is all 'f's
2510 * For type 0,1,2: app tag is all 'f's
2511 */
2512 if ((a_app_tag == 0xffff) &&
2513 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2514 (a_ref_tag == 0xffffffff))) {
2515 uint32_t blocks_done;
2516
2517 /* 2TB boundary case covered automatically with this */
2518 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2519 cmd->se_cmd.bad_sector = e_ref_tag;
2520 cmd->se_cmd.pi_err = 0;
2521 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2522 "need to return scsi good\n");
2523
2524 /* Update protection tag */
2525 if (cmd->prot_sg_cnt) {
2526 uint32_t i, j = 0, k = 0, num_ent;
2527 struct scatterlist *sg, *sgl;
2528
2529
2530 sgl = cmd->prot_sg;
2531
2532 /* Patch the corresponding protection tags */
2533 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2534 num_ent = sg_dma_len(sg) / 8;
2535 if (k + num_ent < blocks_done) {
2536 k += num_ent;
2537 continue;
2538 }
2539 j = blocks_done - k - 1;
2540 k = blocks_done;
2541 break;
2542 }
2543
2544 if (k != blocks_done) {
2545 ql_log(ql_log_warn, vha, 0xf076,
2546 "unexpected tag values tag:lba=%u:%llu)\n",
2547 e_ref_tag, (unsigned long long)lba);
2548 goto out;
2549 }
2550
2551#if 0
2552 struct sd_dif_tuple *spt;
2553 /* TODO:
2554 * This section came from initiator. Is it valid here?
2555 * should ulp be override with actual val???
2556 */
2557 spt = page_address(sg_page(sg)) + sg->offset;
2558 spt += j;
2559
2560 spt->app_tag = 0xffff;
2561 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2562 spt->ref_tag = 0xffffffff;
2563#endif
2564 }
2565
2566 return 0;
2567 }
2568
2569 /* check guard */
2570 if (e_guard != a_guard) {
2571 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2572 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2573
2574 ql_log(ql_log_warn, vha, 0xe076,
2575 "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",
2576 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2577 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2578 a_guard, e_guard, cmd);
2579 goto out;
2580 }
2581
2582 /* check ref tag */
2583 if (e_ref_tag != a_ref_tag) {
2584 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
2585 cmd->se_cmd.bad_sector = e_ref_tag;
2586
2587 ql_log(ql_log_warn, vha, 0xe077,
2588 "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",
2589 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2590 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2591 a_guard, e_guard, cmd);
2592 goto out;
2593 }
2594
2595 /* check appl tag */
2596 if (e_app_tag != a_app_tag) {
2597 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
2598 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2599
2600 ql_log(ql_log_warn, vha, 0xe078,
2601 "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",
2602 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2603 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2604 a_guard, e_guard, cmd);
2605 goto out;
2606 }
2607out:
2608 return 1;
2609}
2610
2611
2d70c103
NB		 2612/* If hardware_lock held on entry, might drop it, then reaquire */
2613/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2614static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2615 struct qla_tgt_cmd *cmd,
2616 struct atio_from_isp *atio)
2617{
2618 struct ctio7_to_24xx *ctio24;
2619 struct qla_hw_data *ha = vha->hw;
2620 request_t *pkt;
2621 int ret = 0;
2622
2623 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2624
2625 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
2626 if (pkt == NULL) {
2627 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2628 "qla_target(%d): %s failed: unable to allocate "
2629 "request packet\n", vha->vp_idx, __func__);
2630 return -ENOMEM;
2631 }
2632
2633 if (cmd != NULL) {
2634 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2635 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2636 "qla_target(%d): Terminating cmd %p with "
2637 "incorrect state %d\n", vha->vp_idx, cmd,
2638 cmd->state);
2639 } else
2640 ret = 1;
2641 }
2642
2643 pkt->entry_count = 1;
2644 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2645
2646 ctio24 = (struct ctio7_to_24xx *)pkt;
2647 ctio24->entry_type = CTIO_TYPE7;
2648 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2649 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2650 ctio24->vp_index = vha->vp_idx;
2651 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2652 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2653 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2654 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2655 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2656 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2657 CTIO7_FLAGS_TERMINATE);
2658 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
2659
2660 /* Most likely, it isn't needed */
2661 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2662 &atio->u.isp24.fcp_cmnd.add_cdb[
2663 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2664 if (ctio24->u.status1.residual != 0)
2665 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2666
2667 qla2x00_start_iocbs(vha, vha->req);
2668 return ret;
2669}
2670
2671static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2672 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2673{
2674 unsigned long flags;
2675 int rc;
2676
2677 if (qlt_issue_marker(vha, ha_locked) < 0)
2678 return;
2679
2680 if (ha_locked) {
2681 rc = __qlt_send_term_exchange(vha, cmd, atio);
2682 goto done;
2683 }
2684 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2685 rc = __qlt_send_term_exchange(vha, cmd, atio);
2686 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2687done:
7b898542
QT		 2688 /*
2689 * Terminate exchange will tell fw to release any active CTIO
2690 * that's in FW posession and cleanup the exchange.
2691 *
2692 * "cmd->state == QLA_TGT_STATE_ABORTED" means CTIO is still
2693 * down at FW. Free the cmd later when CTIO comes back later
2694 * w/aborted(0x2) status.
2695 *
2696 * "cmd->state != QLA_TGT_STATE_ABORTED" means CTIO is already
2697 * back w/some err. Free the cmd now.
2698 */
2699 if ((rc == 1) && (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 2700 if (!ha_locked && !in_interrupt())
2701 msleep(250); /* just in case */
2702
f83adb61
QT		 2703 if (cmd->sg_mapped)
2704 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2705 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2706 }
7b898542 2707 return;
2d70c103
NB		 2708}
2709
2710void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2711{
51a07f84
NB		 2712 struct qla_tgt_sess *sess = cmd->sess;
2713
f83adb61
QT		 2714 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
2715 "%s: se_cmd[%p] ox_id %04x\n",
2716 __func__, &cmd->se_cmd,
2717 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 2718
f83adb61 2719 BUG_ON(cmd->sg_mapped);
2d70c103
NB		 2720 if (unlikely(cmd->free_sg))
2721 kfree(cmd->sg);
51a07f84
NB		 2722
2723 if (!sess || !sess->se_sess) {
2724 WARN_ON(1);
2725 return;
2726 }
2727 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 2728}
2729EXPORT_SYMBOL(qlt_free_cmd);
2730
2731/* ha->hardware_lock supposed to be held on entry */
2732static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2733 struct qla_tgt_cmd *cmd, void *ctio)
2734{
2735 struct qla_tgt_srr_ctio *sc;
0e8cd71c 2736 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 2737 struct qla_tgt_srr_imm *imm;
2738
2739 tgt->ctio_srr_id++;
2740
2741 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2742 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2743
2744 if (!ctio) {
2745 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2746 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2747 vha->vp_idx);
2748 return -EINVAL;
2749 }
2750
2751 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2752 if (sc != NULL) {
2753 sc->cmd = cmd;
2754 /* IRQ is already OFF */
2755 spin_lock(&tgt->srr_lock);
2756 sc->srr_id = tgt->ctio_srr_id;
2757 list_add_tail(&sc->srr_list_entry,
2758 &tgt->srr_ctio_list);
2759 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2760 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2761 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2762 int found = 0;
2763 list_for_each_entry(imm, &tgt->srr_imm_list,
2764 srr_list_entry) {
2765 if (imm->srr_id == sc->srr_id) {
2766 found = 1;
2767 break;
2768 }
2769 }
2770 if (found) {
2771 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2772 "Scheduling srr work\n");
2773 schedule_work(&tgt->srr_work);
2774 } else {
2775 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2776 "qla_target(%d): imm_srr_id "
2777 "== ctio_srr_id (%d), but there is no "
2778 "corresponding SRR IMM, deleting CTIO "
2779 "SRR %p\n", vha->vp_idx,
2780 tgt->ctio_srr_id, sc);
2781 list_del(&sc->srr_list_entry);
2782 spin_unlock(&tgt->srr_lock);
2783
2784 kfree(sc);
2785 return -EINVAL;
2786 }
2787 }
2788 spin_unlock(&tgt->srr_lock);
2789 } else {
2790 struct qla_tgt_srr_imm *ti;
2791
2792 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2793 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2794 vha->vp_idx);
2795 spin_lock(&tgt->srr_lock);
2796 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2797 srr_list_entry) {
2798 if (imm->srr_id == tgt->ctio_srr_id) {
2799 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2800 "IMM SRR %p deleted (id %d)\n",
2801 imm, imm->srr_id);
2802 list_del(&imm->srr_list_entry);
2803 qlt_reject_free_srr_imm(vha, imm, 1);
2804 }
2805 }
2806 spin_unlock(&tgt->srr_lock);
2807
2808 return -ENOMEM;
2809 }
2810
2811 return 0;
2812}
2813
2814/*
2815 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2816 */
2817static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2818 struct qla_tgt_cmd *cmd, uint32_t status)
2819{
2820 int term = 0;
2821
2822 if (ctio != NULL) {
2823 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2824 term = !(c->flags &
2825 __constant_cpu_to_le16(OF_TERM_EXCH));
2826 } else
2827 term = 1;
2828
2829 if (term)
2830 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2831
2832 return term;
2833}
2834
2835/* ha->hardware_lock supposed to be held on entry */
2836static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2837 uint32_t handle)
2838{
2839 struct qla_hw_data *ha = vha->hw;
2840
2841 handle--;
2842 if (ha->tgt.cmds[handle] != NULL) {
2843 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2844 ha->tgt.cmds[handle] = NULL;
2845 return cmd;
2846 } else
2847 return NULL;
2848}
2849
2850/* ha->hardware_lock supposed to be held on entry */
2851static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2852 uint32_t handle, void *ctio)
2853{
2854 struct qla_tgt_cmd *cmd = NULL;
2855
2856 /* Clear out internal marks */
2857 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2858 CTIO_INTERMEDIATE_HANDLE_MARK);
2859
2860 if (handle != QLA_TGT_NULL_HANDLE) {
2861 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
2862 ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
2863 "SKIP_HANDLE CTIO\n");
2864 return NULL;
2865 }
2866 /* handle-1 is actually used */
8d93f550 2867 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 2868 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2869 "qla_target(%d): Wrong handle %x received\n",
2870 vha->vp_idx, handle);
2871 return NULL;
2872 }
2873 cmd = qlt_get_cmd(vha, handle);
2874 if (unlikely(cmd == NULL)) {
2875 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2876 "qla_target(%d): Suspicious: unable to "
2877 "find the command with handle %x\n", vha->vp_idx,
2878 handle);
2879 return NULL;
2880 }
2881 } else if (ctio != NULL) {
2882 /* We can't get loop ID from CTIO7 */
2883 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2884 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2885 "support NULL handles\n", vha->vp_idx);
2886 return NULL;
2887 }
2888
2889 return cmd;
2890}
2891
2892/*
2893 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2894 */
2895static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2896 uint32_t status, void *ctio)
2897{
2898 struct qla_hw_data *ha = vha->hw;
2899 struct se_cmd *se_cmd;
2900 struct target_core_fabric_ops *tfo;
2901 struct qla_tgt_cmd *cmd;
2902
2903 ql_dbg(ql_dbg_tgt, vha, 0xe01e,
2904 "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
2905 vha->vp_idx, ctio, status, handle);
2906
2907 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2908 /* That could happen only in case of an error/reset/abort */
2909 if (status != CTIO_SUCCESS) {
2910 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2911 "Intermediate CTIO received"
2912 " (status %x)\n", status);
2913 }
2914 return;
2915 }
2916
2917 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 2918 if (cmd == NULL)
2d70c103 2919 return;
092e1dc3 2920
2d70c103
NB		 2921 se_cmd = &cmd->se_cmd;
2922 tfo = se_cmd->se_tfo;
2923
2924 if (cmd->sg_mapped)
2925 qlt_unmap_sg(vha, cmd);
2926
2927 if (unlikely(status != CTIO_SUCCESS)) {
2928 switch (status & 0xFFFF) {
2929 case CTIO_LIP_RESET:
2930 case CTIO_TARGET_RESET:
2931 case CTIO_ABORTED:
7b898542 2932 /* driver request abort via Terminate exchange */
2d70c103
NB		 2933 case CTIO_TIMEOUT:
2934 case CTIO_INVALID_RX_ID:
2935 /* They are OK */
2936 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
2937 "qla_target(%d): CTIO with "
2938 "status %#x received, state %x, se_cmd %p, "
2939 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
2940 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
2941 status, cmd->state, se_cmd);
2942 break;
2943
2944 case CTIO_PORT_LOGGED_OUT:
2945 case CTIO_PORT_UNAVAILABLE:
2946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
2947 "qla_target(%d): CTIO with PORT LOGGED "
2948 "OUT (29) or PORT UNAVAILABLE (28) status %x "
2949 "received (state %x, se_cmd %p)\n", vha->vp_idx,
2950 status, cmd->state, se_cmd);
2951 break;
2952
2953 case CTIO_SRR_RECEIVED:
2954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
2955 "qla_target(%d): CTIO with SRR_RECEIVED"
2956 " status %x received (state %x, se_cmd %p)\n",
2957 vha->vp_idx, status, cmd->state, se_cmd);
2958 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
2959 break;
2960 else
2961 return;
2962
f83adb61
QT		 2963 case CTIO_DIF_ERROR: {
2964 struct ctio_crc_from_fw *crc =
2965 (struct ctio_crc_from_fw *)ctio;
2966 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
2967 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
2968 vha->vp_idx, status, cmd->state, se_cmd,
2969 *((u64 *)&crc->actual_dif[0]),
2970 *((u64 *)&crc->expected_dif[0]));
2971
2972 if (qlt_handle_dif_error(vha, cmd, ctio)) {
2973 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2974 /* scsi Write/xfer rdy complete */
2975 goto skip_term;
2976 } else {
2977 /* scsi read/xmit respond complete
2978 * call handle dif to send scsi status
2979 * rather than terminate exchange.
2980 */
2981 cmd->state = QLA_TGT_STATE_PROCESSED;
2982 ha->tgt.tgt_ops->handle_dif_err(cmd);
2983 return;
2984 }
2985 } else {
2986 /* Need to generate a SCSI good completion.
2987 * because FW did not send scsi status.
2988 */
2989 status = 0;
2990 goto skip_term;
2991 }
2992 break;
2993 }
2d70c103
NB		 2994 default:
2995 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 2996 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 2997 vha->vp_idx, status, cmd->state, se_cmd);
2998 break;
2999 }
3000
7b898542
QT		 3001
3002 /* "cmd->state == QLA_TGT_STATE_ABORTED" means
3003 * cmd is already aborted/terminated, we don't
3004 * need to terminate again. The exchange is already
3005 * cleaned up/freed at FW level. Just cleanup at driver
3006 * level.
3007 */
3008 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3009 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3010 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3011 return;
7b898542 3012 }
2d70c103 3013 }
f83adb61 3014skip_term:
2d70c103
NB		 3015
3016 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3017 ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
3018 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3019 int rx_status = 0;
3020
3021 cmd->state = QLA_TGT_STATE_DATA_IN;
3022
3023 if (unlikely(status != CTIO_SUCCESS))
3024 rx_status = -EIO;
3025 else
3026 cmd->write_data_transferred = 1;
3027
3028 ql_dbg(ql_dbg_tgt, vha, 0xe020,
3029 "Data received, context %x, rx_status %d\n",
3030 0x0, rx_status);
3031
3032 ha->tgt.tgt_ops->handle_data(cmd);
3033 return;
3034 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
3035 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3036 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
3037 } else {
3038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3039 "qla_target(%d): A command in state (%d) should "
3040 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3041 }
3042
7b898542
QT		 3043 if (unlikely(status != CTIO_SUCCESS) &&
3044 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3045 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3046 dump_stack();
3047 }
3048
3049 ha->tgt.tgt_ops->free_cmd(cmd);
3050}
3051
2d70c103
NB		 3052static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3053 uint8_t task_codes)
3054{
3055 int fcp_task_attr;
3056
3057 switch (task_codes) {
3058 case ATIO_SIMPLE_QUEUE:
3059 fcp_task_attr = MSG_SIMPLE_TAG;
3060 break;
3061 case ATIO_HEAD_OF_QUEUE:
3062 fcp_task_attr = MSG_HEAD_TAG;
3063 break;
3064 case ATIO_ORDERED_QUEUE:
3065 fcp_task_attr = MSG_ORDERED_TAG;
3066 break;
3067 case ATIO_ACA_QUEUE:
3068 fcp_task_attr = MSG_ACA_TAG;
3069 break;
3070 case ATIO_UNTAGGED:
3071 fcp_task_attr = MSG_SIMPLE_TAG;
3072 break;
3073 default:
3074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3075 "qla_target: unknown task code %x, use ORDERED instead\n",
3076 task_codes);
3077 fcp_task_attr = MSG_ORDERED_TAG;
3078 break;
3079 }
3080
3081 return fcp_task_attr;
3082}
3083
3084static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3085 uint8_t *);
3086/*
3087 * Process context for I/O path into tcm_qla2xxx code
3088 */
51a07f84 3089static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3090{
2d70c103
NB		 3091 scsi_qla_host_t *vha = cmd->vha;
3092 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3093 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3094 struct qla_tgt_sess *sess = cmd->sess;
2d70c103
NB		 3095 struct atio_from_isp *atio = &cmd->atio;
3096 unsigned char *cdb;
3097 unsigned long flags;
3098 uint32_t data_length;
3099 int ret, fcp_task_attr, data_dir, bidi = 0;
3100
3101 if (tgt->tgt_stop)
3102 goto out_term;
3103
2d70c103
NB		 3104 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
3105 cmd->tag = atio->u.isp24.exchange_addr;
3106 cmd->unpacked_lun = scsilun_to_int(
3107 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3108
3109 if (atio->u.isp24.fcp_cmnd.rddata &&
3110 atio->u.isp24.fcp_cmnd.wrdata) {
3111 bidi = 1;
3112 data_dir = DMA_TO_DEVICE;
3113 } else if (atio->u.isp24.fcp_cmnd.rddata)
3114 data_dir = DMA_FROM_DEVICE;
3115 else if (atio->u.isp24.fcp_cmnd.wrdata)
3116 data_dir = DMA_TO_DEVICE;
3117 else
3118 data_dir = DMA_NONE;
3119
3120 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3121 atio->u.isp24.fcp_cmnd.task_attr);
3122 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3123 &atio->u.isp24.fcp_cmnd.add_cdb[
3124 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3125
3126 ql_dbg(ql_dbg_tgt, vha, 0xe022,
f83adb61
QT		 3127 "qla_target: START qla cmd: %p se_cmd %p lun: 0x%04x (tag %d) len(%d) ox_id %x\n",
3128 cmd, &cmd->se_cmd, cmd->unpacked_lun, cmd->tag, data_length,
3129 cmd->atio.u.isp24.fcp_hdr.ox_id);
2d70c103 3130
51a07f84
NB		 3131 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3132 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 3133 if (ret != 0)
3134 goto out_term;
3135 /*
3136 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3137 */
08234e3a 3138 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 3139 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 3140 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 3141 return;
3142
3143out_term:
3144 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
3145 /*
fae9eaf8
RD		 3146 * cmd has not sent to target yet, so pass NULL as the second
3147 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103
NB		 3148 */
3149 spin_lock_irqsave(&ha->hardware_lock, flags);
3150 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
51a07f84
NB		 3151 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3152 ha->tgt.tgt_ops->put_sess(sess);
3153 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3154}
3155
3156static void qlt_do_work(struct work_struct *work)
3157{
3158 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
3159
3160 __qlt_do_work(cmd);
3161}
3162
3163static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
3164 struct qla_tgt_sess *sess,
3165 struct atio_from_isp *atio)
3166{
3167 struct se_session *se_sess = sess->se_sess;
3168 struct qla_tgt_cmd *cmd;
3169 int tag;
3170
3171 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3172 if (tag < 0)
3173 return NULL;
3174
3175 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3176 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3177
3178 memcpy(&cmd->atio, atio, sizeof(*atio));
3179 cmd->state = QLA_TGT_STATE_NEW;
3180 cmd->tgt = vha->vha_tgt.qla_tgt;
3181 cmd->vha = vha;
3182 cmd->se_cmd.map_tag = tag;
3183 cmd->sess = sess;
3184 cmd->loop_id = sess->loop_id;
3185 cmd->conf_compl_supported = sess->conf_compl_supported;
3186
3187 return cmd;
3188}
3189
3190static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
3191 uint16_t);
3192
3193static void qlt_create_sess_from_atio(struct work_struct *work)
3194{
3195 struct qla_tgt_sess_op *op = container_of(work,
3196 struct qla_tgt_sess_op, work);
3197 scsi_qla_host_t *vha = op->vha;
3198 struct qla_hw_data *ha = vha->hw;
3199 struct qla_tgt_sess *sess;
3200 struct qla_tgt_cmd *cmd;
3201 unsigned long flags;
3202 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
3203
3204 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
3205 "qla_target(%d): Unable to find wwn login"
3206 " (s_id %x:%x:%x), trying to create it manually\n",
3207 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
3208
3209 if (op->atio.u.raw.entry_count > 1) {
3210 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
3211 "Dropping multy entry atio %p\n", &op->atio);
3212 goto out_term;
3213 }
3214
3215 mutex_lock(&vha->vha_tgt.tgt_mutex);
3216 sess = qlt_make_local_sess(vha, s_id);
3217 /* sess has an extra creation ref. */
3218 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3219
3220 if (!sess)
3221 goto out_term;
3222 /*
3223 * Now obtain a pre-allocated session tag using the original op->atio
3224 * packet header, and dispatch into __qlt_do_work() using the existing
3225 * process context.
3226 */
3227 cmd = qlt_get_tag(vha, sess, &op->atio);
3228 if (!cmd) {
3229 spin_lock_irqsave(&ha->hardware_lock, flags);
3230 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
2d70c103 3231 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 3232 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3233 kfree(op);
3234 return;
3235 }
3236 /*
3237 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release
3238 * the extra reference taken above by qlt_make_local_sess()
3239 */
3240 __qlt_do_work(cmd);
3241 kfree(op);
3242 return;
3243
3244out_term:
3245 spin_lock_irqsave(&ha->hardware_lock, flags);
3246 qlt_send_term_exchange(vha, NULL, &op->atio, 1);
08234e3a 3247 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84
NB		 3248 kfree(op);
3249
2d70c103
NB		 3250}
3251
3252/* ha->hardware_lock supposed to be held on entry */
3253static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3254 struct atio_from_isp *atio)
3255{
51a07f84 3256 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3257 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3258 struct qla_tgt_sess *sess;
2d70c103
NB		 3259 struct qla_tgt_cmd *cmd;
3260
3261 if (unlikely(tgt->tgt_stop)) {
3262 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
3263 "New command while device %p is shutting down\n", tgt);
3264 return -EFAULT;
3265 }
3266
51a07f84
NB		 3267 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
3268 if (unlikely(!sess)) {
3269 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
3270 GFP_ATOMIC);
3271 if (!op)
3272 return -ENOMEM;
3273
3274 memcpy(&op->atio, atio, sizeof(*atio));
3275 INIT_WORK(&op->work, qlt_create_sess_from_atio);
3276 queue_work(qla_tgt_wq, &op->work);
3277 return 0;
3278 }
3279 /*
3280 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
3281 */
3282 kref_get(&sess->se_sess->sess_kref);
3283
3284 cmd = qlt_get_tag(vha, sess, atio);
2d70c103
NB		 3285 if (!cmd) {
3286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
3287 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
51a07f84 3288 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 3289 return -ENOMEM;
3290 }
3291
2d70c103
NB		 3292 INIT_WORK(&cmd->work, qlt_do_work);
3293 queue_work(qla_tgt_wq, &cmd->work);
3294 return 0;
3295
3296}
3297
3298/* ha->hardware_lock supposed to be held on entry */
3299static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
3300 int fn, void *iocb, int flags)
3301{
3302 struct scsi_qla_host *vha = sess->vha;
3303 struct qla_hw_data *ha = vha->hw;
3304 struct qla_tgt_mgmt_cmd *mcmd;
3305 int res;
3306 uint8_t tmr_func;
3307
3308 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3309 if (!mcmd) {
3310 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
3311 "qla_target(%d): Allocation of management "
3312 "command failed, some commands and their data could "
3313 "leak\n", vha->vp_idx);
3314 return -ENOMEM;
3315 }
3316 memset(mcmd, 0, sizeof(*mcmd));
3317 mcmd->sess = sess;
3318
3319 if (iocb) {
3320 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3321 sizeof(mcmd->orig_iocb.imm_ntfy));
3322 }
3323 mcmd->tmr_func = fn;
3324 mcmd->flags = flags;
3325
3326 switch (fn) {
3327 case QLA_TGT_CLEAR_ACA:
3328 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
3329 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
3330 tmr_func = TMR_CLEAR_ACA;
3331 break;
3332
3333 case QLA_TGT_TARGET_RESET:
3334 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
3335 "qla_target(%d): TARGET_RESET received\n",
3336 sess->vha->vp_idx);
3337 tmr_func = TMR_TARGET_WARM_RESET;
3338 break;
3339
3340 case QLA_TGT_LUN_RESET:
3341 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
3342 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
3343 tmr_func = TMR_LUN_RESET;
3344 break;
3345
3346 case QLA_TGT_CLEAR_TS:
3347 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
3348 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
3349 tmr_func = TMR_CLEAR_TASK_SET;
3350 break;
3351
3352 case QLA_TGT_ABORT_TS:
3353 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
3354 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
3355 tmr_func = TMR_ABORT_TASK_SET;
3356 break;
3357#if 0
3358 case QLA_TGT_ABORT_ALL:
3359 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
3360 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
3361 sess->vha->vp_idx);
3362 tmr_func = 0;
3363 break;
3364
3365 case QLA_TGT_ABORT_ALL_SESS:
3366 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
3367 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
3368 sess->vha->vp_idx);
3369 tmr_func = 0;
3370 break;
3371
3372 case QLA_TGT_NEXUS_LOSS_SESS:
3373 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
3374 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
3375 sess->vha->vp_idx);
3376 tmr_func = 0;
3377 break;
3378
3379 case QLA_TGT_NEXUS_LOSS:
3380 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
3381 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
3382 tmr_func = 0;
3383 break;
3384#endif
3385 default:
3386 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
3387 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
3388 sess->vha->vp_idx, fn);
3389 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3390 return -ENOSYS;
3391 }
3392
3393 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
3394 if (res != 0) {
3395 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
3396 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
3397 sess->vha->vp_idx, res);
3398 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3399 return -EFAULT;
3400 }
3401
3402 return 0;
3403}
3404
3405/* ha->hardware_lock supposed to be held on entry */
3406static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
3407{
3408 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3409 struct qla_hw_data *ha = vha->hw;
3410 struct qla_tgt *tgt;
3411 struct qla_tgt_sess *sess;
3412 uint32_t lun, unpacked_lun;
3413 int lun_size, fn;
3414
0e8cd71c 3415 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3416
3417 lun = a->u.isp24.fcp_cmnd.lun;
3418 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
3419 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
3420 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3421 a->u.isp24.fcp_hdr.s_id);
3422 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3423
3424 if (!sess) {
3425 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
3426 "qla_target(%d): task mgmt fn 0x%x for "
3427 "non-existant session\n", vha->vp_idx, fn);
3428 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
3429 sizeof(struct atio_from_isp));
3430 }
3431
3432 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
3433}
3434
3435/* ha->hardware_lock supposed to be held on entry */
3436static int __qlt_abort_task(struct scsi_qla_host *vha,
3437 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
3438{
3439 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3440 struct qla_hw_data *ha = vha->hw;
3441 struct qla_tgt_mgmt_cmd *mcmd;
3442 uint32_t lun, unpacked_lun;
3443 int rc;
3444
3445 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3446 if (mcmd == NULL) {
3447 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
3448 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
3449 vha->vp_idx, __func__);
3450 return -ENOMEM;
3451 }
3452 memset(mcmd, 0, sizeof(*mcmd));
3453
3454 mcmd->sess = sess;
3455 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3456 sizeof(mcmd->orig_iocb.imm_ntfy));
3457
3458 lun = a->u.isp24.fcp_cmnd.lun;
3459 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3460
3461 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
3462 le16_to_cpu(iocb->u.isp2x.seq_id));
3463 if (rc != 0) {
3464 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
3465 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
3466 vha->vp_idx, rc);
3467 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3468 return -EFAULT;
3469 }
3470
3471 return 0;
3472}
3473
3474/* ha->hardware_lock supposed to be held on entry */
3475static int qlt_abort_task(struct scsi_qla_host *vha,
3476 struct imm_ntfy_from_isp *iocb)
3477{
3478 struct qla_hw_data *ha = vha->hw;
3479 struct qla_tgt_sess *sess;
3480 int loop_id;
3481
3482 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
3483
3484 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
3485 if (sess == NULL) {
3486 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
3487 "qla_target(%d): task abort for unexisting "
3488 "session\n", vha->vp_idx);
0e8cd71c 3489 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 3490 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
3491 }
3492
3493 return __qlt_abort_task(vha, iocb, sess);
3494}
3495
3496/*
3497 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3498 */
3499static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
3500 struct imm_ntfy_from_isp *iocb)
3501{
2d70c103
NB		 3502 int res = 0;
3503
3504 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
7b833558
OK		 3505 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
3506 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2d70c103
NB		 3507
3508 switch (iocb->u.isp24.status_subcode) {
3509 case ELS_PLOGI:
3510 case ELS_FLOGI:
3511 case ELS_PRLI:
3512 case ELS_LOGO:
3513 case ELS_PRLO:
3514 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3515 break;
3516 case ELS_PDISC:
3517 case ELS_ADISC:
3518 {
0e8cd71c 3519 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3520 if (tgt->link_reinit_iocb_pending) {
3521 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3522 0, 0, 0, 0, 0, 0);
3523 tgt->link_reinit_iocb_pending = 0;
3524 }
3525 res = 1; /* send notify ack */
3526 break;
3527 }
3528
3529 default:
3530 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
3531 "qla_target(%d): Unsupported ELS command %x "
3532 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
3533 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3534 break;
3535 }
3536
3537 return res;
3538}
3539
3540static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
3541{
3542 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
3543 size_t first_offset = 0, rem_offset = offset, tmp = 0;
3544 int i, sg_srr_cnt, bufflen = 0;
3545
3546 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
3547 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
3548 "cmd->sg_cnt: %u, direction: %d\n",
3549 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
3550
3551 /*
3552 * FIXME: Reject non zero SRR relative offset until we can test
3553 * this code properly.
3554 */
3555 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
3556 return -1;
3557
3558 if (!cmd->sg || !cmd->sg_cnt) {
3559 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
3560 "Missing cmd->sg or zero cmd->sg_cnt in"
3561 " qla_tgt_set_data_offset\n");
3562 return -EINVAL;
3563 }
3564 /*
3565 * Walk the current cmd->sg list until we locate the new sg_srr_start
3566 */
3567 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
3568 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
3569 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
3570 i, sg, sg_page(sg), sg->length, sg->offset);
3571
3572 if ((sg->length + tmp) > offset) {
3573 first_offset = rem_offset;
3574 sg_srr_start = sg;
3575 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
3576 "Found matching sg[%d], using %p as sg_srr_start, "
3577 "and using first_offset: %zu\n", i, sg,
3578 first_offset);
3579 break;
3580 }
3581 tmp += sg->length;
3582 rem_offset -= sg->length;
3583 }
3584
3585 if (!sg_srr_start) {
3586 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
3587 "Unable to locate sg_srr_start for offset: %u\n", offset);
3588 return -EINVAL;
3589 }
3590 sg_srr_cnt = (cmd->sg_cnt - i);
3591
3592 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
3593 if (!sg_srr) {
3594 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
3595 "Unable to allocate sgp\n");
3596 return -ENOMEM;
3597 }
3598 sg_init_table(sg_srr, sg_srr_cnt);
3599 sgp = &sg_srr[0];
3600 /*
3601 * Walk the remaining list for sg_srr_start, mapping to the newly
3602 * allocated sg_srr taking first_offset into account.
3603 */
3604 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
3605 if (first_offset) {
3606 sg_set_page(sgp, sg_page(sg),
3607 (sg->length - first_offset), first_offset);
3608 first_offset = 0;
3609 } else {
3610 sg_set_page(sgp, sg_page(sg), sg->length, 0);
3611 }
3612 bufflen += sgp->length;
3613
3614 sgp = sg_next(sgp);
3615 if (!sgp)
3616 break;
3617 }
3618
3619 cmd->sg = sg_srr;
3620 cmd->sg_cnt = sg_srr_cnt;
3621 cmd->bufflen = bufflen;
3622 cmd->offset += offset;
3623 cmd->free_sg = 1;
3624
3625 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
3626 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
3627 cmd->sg_cnt);
3628 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
3629 cmd->bufflen);
3630 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
3631 cmd->offset);
3632
3633 if (cmd->sg_cnt < 0)
3634 BUG();
3635
3636 if (cmd->bufflen < 0)
3637 BUG();
3638
3639 return 0;
3640}
3641
3642static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
3643 uint32_t srr_rel_offs, int *xmit_type)
3644{
3645 int res = 0, rel_offs;
3646
3647 rel_offs = srr_rel_offs - cmd->offset;
3648 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
3649 srr_rel_offs, rel_offs);
3650
3651 *xmit_type = QLA_TGT_XMIT_ALL;
3652
3653 if (rel_offs < 0) {
3654 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
3655 "qla_target(%d): SRR rel_offs (%d) < 0",
3656 cmd->vha->vp_idx, rel_offs);
3657 res = -1;
3658 } else if (rel_offs == cmd->bufflen)
3659 *xmit_type = QLA_TGT_XMIT_STATUS;
3660 else if (rel_offs > 0)
3661 res = qlt_set_data_offset(cmd, rel_offs);
3662
3663 return res;
3664}
3665
3666/* No locks, thread context */
3667static void qlt_handle_srr(struct scsi_qla_host *vha,
3668 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
3669{
3670 struct imm_ntfy_from_isp *ntfy =
3671 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
3672 struct qla_hw_data *ha = vha->hw;
3673 struct qla_tgt_cmd *cmd = sctio->cmd;
3674 struct se_cmd *se_cmd = &cmd->se_cmd;
3675 unsigned long flags;
3676 int xmit_type = 0, resp = 0;
3677 uint32_t offset;
3678 uint16_t srr_ui;
3679
3680 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
3681 srr_ui = ntfy->u.isp24.srr_ui;
3682
3683 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3684 cmd, srr_ui);
3685
3686 switch (srr_ui) {
3687 case SRR_IU_STATUS:
3688 spin_lock_irqsave(&ha->hardware_lock, flags);
3689 qlt_send_notify_ack(vha, ntfy,
3690 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3691 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3692 xmit_type = QLA_TGT_XMIT_STATUS;
3693 resp = 1;
3694 break;
3695 case SRR_IU_DATA_IN:
3696 if (!cmd->sg || !cmd->sg_cnt) {
3697 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3698 "Unable to process SRR_IU_DATA_IN due to"
3699 " missing cmd->sg, state: %d\n", cmd->state);
3700 dump_stack();
3701 goto out_reject;
3702 }
3703 if (se_cmd->scsi_status != 0) {
3704 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3705 "Rejecting SRR_IU_DATA_IN with non GOOD "
3706 "scsi_status\n");
3707 goto out_reject;
3708 }
3709 cmd->bufflen = se_cmd->data_length;
3710
3711 if (qlt_has_data(cmd)) {
3712 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3713 goto out_reject;
3714 spin_lock_irqsave(&ha->hardware_lock, flags);
3715 qlt_send_notify_ack(vha, ntfy,
3716 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3717 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3718 resp = 1;
3719 } else {
3720 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3721 "qla_target(%d): SRR for in data for cmd "
3722 "without them (tag %d, SCSI status %d), "
3723 "reject", vha->vp_idx, cmd->tag,
3724 cmd->se_cmd.scsi_status);
3725 goto out_reject;
3726 }
3727 break;
3728 case SRR_IU_DATA_OUT:
3729 if (!cmd->sg || !cmd->sg_cnt) {
3730 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3731 "Unable to process SRR_IU_DATA_OUT due to"
3732 " missing cmd->sg\n");
3733 dump_stack();
3734 goto out_reject;
3735 }
3736 if (se_cmd->scsi_status != 0) {
3737 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3738 "Rejecting SRR_IU_DATA_OUT"
3739 " with non GOOD scsi_status\n");
3740 goto out_reject;
3741 }
3742 cmd->bufflen = se_cmd->data_length;
3743
3744 if (qlt_has_data(cmd)) {
3745 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3746 goto out_reject;
3747 spin_lock_irqsave(&ha->hardware_lock, flags);
3748 qlt_send_notify_ack(vha, ntfy,
3749 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3750 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3751 if (xmit_type & QLA_TGT_XMIT_DATA)
3752 qlt_rdy_to_xfer(cmd);
3753 } else {
3754 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3755 "qla_target(%d): SRR for out data for cmd "
3756 "without them (tag %d, SCSI status %d), "
3757 "reject", vha->vp_idx, cmd->tag,
3758 cmd->se_cmd.scsi_status);
3759 goto out_reject;
3760 }
3761 break;
3762 default:
3763 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3764 "qla_target(%d): Unknown srr_ui value %x",
3765 vha->vp_idx, srr_ui);
3766 goto out_reject;
3767 }
3768
3769 /* Transmit response in case of status and data-in cases */
3770 if (resp)
3771 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3772
3773 return;
3774
3775out_reject:
3776 spin_lock_irqsave(&ha->hardware_lock, flags);
3777 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3778 NOTIFY_ACK_SRR_FLAGS_REJECT,
3779 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3780 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3781 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3782 cmd->state = QLA_TGT_STATE_DATA_IN;
3783 dump_stack();
3784 } else
3785 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3786 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3787}
3788
3789static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3790 struct qla_tgt_srr_imm *imm, int ha_locked)
3791{
3792 struct qla_hw_data *ha = vha->hw;
3793 unsigned long flags = 0;
3794
3795 if (!ha_locked)
3796 spin_lock_irqsave(&ha->hardware_lock, flags);
3797
3798 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3799 NOTIFY_ACK_SRR_FLAGS_REJECT,
3800 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3801 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3802
3803 if (!ha_locked)
3804 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3805
3806 kfree(imm);
3807}
3808
3809static void qlt_handle_srr_work(struct work_struct *work)
3810{
3811 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3812 struct scsi_qla_host *vha = tgt->vha;
3813 struct qla_tgt_srr_ctio *sctio;
3814 unsigned long flags;
3815
3816 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3817 tgt);
3818
3819restart:
3820 spin_lock_irqsave(&tgt->srr_lock, flags);
3821 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3822 struct qla_tgt_srr_imm *imm, *i, *ti;
3823 struct qla_tgt_cmd *cmd;
3824 struct se_cmd *se_cmd;
3825
3826 imm = NULL;
3827 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3828 srr_list_entry) {
3829 if (i->srr_id == sctio->srr_id) {
3830 list_del(&i->srr_list_entry);
3831 if (imm) {
3832 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3833 "qla_target(%d): There must be "
3834 "only one IMM SRR per CTIO SRR "
3835 "(IMM SRR %p, id %d, CTIO %p\n",
3836 vha->vp_idx, i, i->srr_id, sctio);
3837 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3838 } else
3839 imm = i;
3840 }
3841 }
3842
3843 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3844 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3845 sctio->srr_id);
3846
3847 if (imm == NULL) {
3848 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3849 "Not found matching IMM for SRR CTIO (id %d)\n",
3850 sctio->srr_id);
3851 continue;
3852 } else
3853 list_del(&sctio->srr_list_entry);
3854
3855 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3856
3857 cmd = sctio->cmd;
3858 /*
3859 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3860 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3861 * logic..
3862 */
3863 cmd->offset = 0;
3864 if (cmd->free_sg) {
3865 kfree(cmd->sg);
3866 cmd->sg = NULL;
3867 cmd->free_sg = 0;
3868 }
3869 se_cmd = &cmd->se_cmd;
3870
3871 cmd->sg_cnt = se_cmd->t_data_nents;
3872 cmd->sg = se_cmd->t_data_sg;
3873
3874 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3875 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3876 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
6f58c780
DGW		 3877 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
3878 cmd->sg_cnt, cmd->offset);
2d70c103
NB		 3879
3880 qlt_handle_srr(vha, sctio, imm);
3881
3882 kfree(imm);
3883 kfree(sctio);
3884 goto restart;
3885 }
3886 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3887}
3888
3889/* ha->hardware_lock supposed to be held on entry */
3890static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3891 struct imm_ntfy_from_isp *iocb)
3892{
3893 struct qla_tgt_srr_imm *imm;
0e8cd71c 3894 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3895 struct qla_tgt_srr_ctio *sctio;
3896
3897 tgt->imm_srr_id++;
3898
3899 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
3900 vha->vp_idx);
3901
3902 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
3903 if (imm != NULL) {
3904 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
3905
3906 /* IRQ is already OFF */
3907 spin_lock(&tgt->srr_lock);
3908 imm->srr_id = tgt->imm_srr_id;
3909 list_add_tail(&imm->srr_list_entry,
3910 &tgt->srr_imm_list);
3911 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
3912 "IMM NTFY SRR %p added (id %d, ui %x)\n",
3913 imm, imm->srr_id, iocb->u.isp24.srr_ui);
3914 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3915 int found = 0;
3916 list_for_each_entry(sctio, &tgt->srr_ctio_list,
3917 srr_list_entry) {
3918 if (sctio->srr_id == imm->srr_id) {
3919 found = 1;
3920 break;
3921 }
3922 }
3923 if (found) {
3924 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
3925 "Scheduling srr work\n");
3926 schedule_work(&tgt->srr_work);
3927 } else {
3928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
3929 "qla_target(%d): imm_srr_id "
3930 "== ctio_srr_id (%d), but there is no "
3931 "corresponding SRR CTIO, deleting IMM "
3932 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
3933 imm);
3934 list_del(&imm->srr_list_entry);
3935
3936 kfree(imm);
3937
3938 spin_unlock(&tgt->srr_lock);
3939 goto out_reject;
3940 }
3941 }
3942 spin_unlock(&tgt->srr_lock);
3943 } else {
3944 struct qla_tgt_srr_ctio *ts;
3945
3946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
3947 "qla_target(%d): Unable to allocate SRR IMM "
3948 "entry, SRR request will be rejected\n", vha->vp_idx);
3949
3950 /* IRQ is already OFF */
3951 spin_lock(&tgt->srr_lock);
3952 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
3953 srr_list_entry) {
3954 if (sctio->srr_id == tgt->imm_srr_id) {
3955 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
3956 "CTIO SRR %p deleted (id %d)\n",
3957 sctio, sctio->srr_id);
3958 list_del(&sctio->srr_list_entry);
3959 qlt_send_term_exchange(vha, sctio->cmd,
3960 &sctio->cmd->atio, 1);
3961 kfree(sctio);
3962 }
3963 }
3964 spin_unlock(&tgt->srr_lock);
3965 goto out_reject;
3966 }
3967
3968 return;
3969
3970out_reject:
3971 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
3972 NOTIFY_ACK_SRR_FLAGS_REJECT,
3973 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3974 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3975}
3976
3977/*
3978 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3979 */
3980static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
3981 struct imm_ntfy_from_isp *iocb)
3982{
3983 struct qla_hw_data *ha = vha->hw;
3984 uint32_t add_flags = 0;
3985 int send_notify_ack = 1;
3986 uint16_t status;
3987
3988 status = le16_to_cpu(iocb->u.isp2x.status);
3989 switch (status) {
3990 case IMM_NTFY_LIP_RESET:
3991 {
3992 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
3993 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
3994 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
3995 iocb->u.isp24.status_subcode);
3996
3997 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
3998 send_notify_ack = 0;
3999 break;
4000 }
4001
4002 case IMM_NTFY_LIP_LINK_REINIT:
4003 {
0e8cd71c 4004 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4005 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4006 "qla_target(%d): LINK REINIT (loop %#x, "
4007 "subcode %x)\n", vha->vp_idx,
4008 le16_to_cpu(iocb->u.isp24.nport_handle),
4009 iocb->u.isp24.status_subcode);
4010 if (tgt->link_reinit_iocb_pending) {
4011 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4012 0, 0, 0, 0, 0, 0);
4013 }
4014 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4015 tgt->link_reinit_iocb_pending = 1;
4016 /*
4017 * QLogic requires to wait after LINK REINIT for possible
4018 * PDISC or ADISC ELS commands
4019 */
4020 send_notify_ack = 0;
4021 break;
4022 }
4023
4024 case IMM_NTFY_PORT_LOGOUT:
4025 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4026 "qla_target(%d): Port logout (loop "
4027 "%#x, subcode %x)\n", vha->vp_idx,
4028 le16_to_cpu(iocb->u.isp24.nport_handle),
4029 iocb->u.isp24.status_subcode);
4030
4031 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4032 send_notify_ack = 0;
4033 /* The sessions will be cleared in the callback, if needed */
4034 break;
4035
4036 case IMM_NTFY_GLBL_TPRLO:
4037 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4038 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4039 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4040 send_notify_ack = 0;
4041 /* The sessions will be cleared in the callback, if needed */
4042 break;
4043
4044 case IMM_NTFY_PORT_CONFIG:
4045 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4046 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4047 status);
4048 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4049 send_notify_ack = 0;
4050 /* The sessions will be cleared in the callback, if needed */
4051 break;
4052
4053 case IMM_NTFY_GLBL_LOGO:
4054 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4055 "qla_target(%d): Link failure detected\n",
4056 vha->vp_idx);
4057 /* I_T nexus loss */
4058 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4059 send_notify_ack = 0;
4060 break;
4061
4062 case IMM_NTFY_IOCB_OVERFLOW:
4063 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4064 "qla_target(%d): Cannot provide requested "
4065 "capability (IOCB overflowed the immediate notify "
4066 "resource count)\n", vha->vp_idx);
4067 break;
4068
4069 case IMM_NTFY_ABORT_TASK:
4070 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4071 "qla_target(%d): Abort Task (S %08x I %#x -> "
4072 "L %#x)\n", vha->vp_idx,
4073 le16_to_cpu(iocb->u.isp2x.seq_id),
4074 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4075 le16_to_cpu(iocb->u.isp2x.lun));
4076 if (qlt_abort_task(vha, iocb) == 0)
4077 send_notify_ack = 0;
4078 break;
4079
4080 case IMM_NTFY_RESOURCE:
4081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4082 "qla_target(%d): Out of resources, host %ld\n",
4083 vha->vp_idx, vha->host_no);
4084 break;
4085
4086 case IMM_NTFY_MSG_RX:
4087 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4088 "qla_target(%d): Immediate notify task %x\n",
4089 vha->vp_idx, iocb->u.isp2x.task_flags);
4090 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4091 send_notify_ack = 0;
4092 break;
4093
4094 case IMM_NTFY_ELS:
4095 if (qlt_24xx_handle_els(vha, iocb) == 0)
4096 send_notify_ack = 0;
4097 break;
4098
4099 case IMM_NTFY_SRR:
4100 qlt_prepare_srr_imm(vha, iocb);
4101 send_notify_ack = 0;
4102 break;
4103
4104 default:
4105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4106 "qla_target(%d): Received unknown immediate "
4107 "notify status %x\n", vha->vp_idx, status);
4108 break;
4109 }
4110
4111 if (send_notify_ack)
4112 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4113}
4114
4115/*
4116 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4117 * This function sends busy to ISP 2xxx or 24xx.
4118 */
4119static void qlt_send_busy(struct scsi_qla_host *vha,
4120 struct atio_from_isp *atio, uint16_t status)
4121{
4122 struct ctio7_to_24xx *ctio24;
4123 struct qla_hw_data *ha = vha->hw;
4124 request_t *pkt;
4125 struct qla_tgt_sess *sess = NULL;
4126
4127 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4128 atio->u.isp24.fcp_hdr.s_id);
4129 if (!sess) {
4130 qlt_send_term_exchange(vha, NULL, atio, 1);
4131 return;
4132 }
4133 /* Sending marker isn't necessary, since we called from ISR */
4134
4135 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4136 if (!pkt) {
4137 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
4138 "qla_target(%d): %s failed: unable to allocate "
4139 "request packet", vha->vp_idx, __func__);
4140 return;
4141 }
4142
4143 pkt->entry_count = 1;
4144 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
4145
4146 ctio24 = (struct ctio7_to_24xx *)pkt;
4147 ctio24->entry_type = CTIO_TYPE7;
4148 ctio24->nport_handle = sess->loop_id;
4149 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
4150 ctio24->vp_index = vha->vp_idx;
4151 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
4152 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
4153 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
4154 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
4155 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
4156 __constant_cpu_to_le16(
4157 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
4158 CTIO7_FLAGS_DONT_RET_CTIO);
4159 /*
4160 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
4161 * if the explicit conformation is used.
4162 */
4163 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
4164 ctio24->u.status1.scsi_status = cpu_to_le16(status);
4165 ctio24->u.status1.residual = get_unaligned((uint32_t *)
4166 &atio->u.isp24.fcp_cmnd.add_cdb[
4167 atio->u.isp24.fcp_cmnd.add_cdb_len]);
4168 if (ctio24->u.status1.residual != 0)
4169 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
4170
4171 qla2x00_start_iocbs(vha, vha->req);
4172}
4173
4174/* ha->hardware_lock supposed to be held on entry */
4175/* called via callback from qla2xxx */
4176static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
4177 struct atio_from_isp *atio)
4178{
4179 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4180 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4181 int rc;
4182
4183 if (unlikely(tgt == NULL)) {
4184 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
4185 "ATIO pkt, but no tgt (ha %p)", ha);
4186 return;
4187 }
4188 ql_dbg(ql_dbg_tgt, vha, 0xe02c,
4189 "qla_target(%d): ATIO pkt %p: type %02x count %02x",
4190 vha->vp_idx, atio, atio->u.raw.entry_type,
4191 atio->u.raw.entry_count);
4192 /*
4193 * In tgt_stop mode we also should allow all requests to pass.
4194 * Otherwise, some commands can stuck.
4195 */
4196
4197 tgt->irq_cmd_count++;
4198
4199 switch (atio->u.raw.entry_type) {
4200 case ATIO_TYPE7:
4201 ql_dbg(ql_dbg_tgt, vha, 0xe02d,
f83adb61 4202 "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		 4203 vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
4204 atio->u.isp24.fcp_cmnd.rddata,
4205 atio->u.isp24.fcp_cmnd.wrdata,
f83adb61 4206 atio->u.isp24.fcp_cmnd.cdb[0],
2d70c103
NB		 4207 atio->u.isp24.fcp_cmnd.add_cdb_len,
4208 be32_to_cpu(get_unaligned((uint32_t *)
4209 &atio->u.isp24.fcp_cmnd.add_cdb[
4210 atio->u.isp24.fcp_cmnd.add_cdb_len])),
4211 atio->u.isp24.fcp_hdr.s_id[0],
4212 atio->u.isp24.fcp_hdr.s_id[1],
4213 atio->u.isp24.fcp_hdr.s_id[2]);
4214
4215 if (unlikely(atio->u.isp24.exchange_addr ==
4216 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
4217 ql_dbg(ql_dbg_tgt, vha, 0xe058,
4218 "qla_target(%d): ATIO_TYPE7 "
4219 "received with UNKNOWN exchange address, "
4220 "sending QUEUE_FULL\n", vha->vp_idx);
4221 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
4222 break;
4223 }
4224 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
4225 rc = qlt_handle_cmd_for_atio(vha, atio);
4226 else
4227 rc = qlt_handle_task_mgmt(vha, atio);
4228 if (unlikely(rc != 0)) {
4229 if (rc == -ESRCH) {
4230#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4231 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4232#else
4233 qlt_send_term_exchange(vha, NULL, atio, 1);
4234#endif
4235 } else {
4236 if (tgt->tgt_stop) {
4237 ql_dbg(ql_dbg_tgt, vha, 0xe059,
4238 "qla_target: Unable to send "
4239 "command to target for req, "
4240 "ignoring.\n");
4241 } else {
4242 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
4243 "qla_target(%d): Unable to send "
4244 "command to target, sending BUSY "
4245 "status.\n", vha->vp_idx);
4246 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4247 }
4248 }
4249 }
4250 break;
4251
4252 case IMMED_NOTIFY_TYPE:
4253 {
4254 if (unlikely(atio->u.isp2x.entry_status != 0)) {
4255 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
4256 "qla_target(%d): Received ATIO packet %x "
4257 "with error status %x\n", vha->vp_idx,
4258 atio->u.raw.entry_type,
4259 atio->u.isp2x.entry_status);
4260 break;
4261 }
4262 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
4263 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
4264 break;
4265 }
4266
4267 default:
4268 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
4269 "qla_target(%d): Received unknown ATIO atio "
4270 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
4271 break;
4272 }
4273
4274 tgt->irq_cmd_count--;
4275}
4276
4277/* ha->hardware_lock supposed to be held on entry */
4278/* called via callback from qla2xxx */
4279static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
4280{
4281 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4282 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4283
4284 if (unlikely(tgt == NULL)) {
4285 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
4286 "qla_target(%d): Response pkt %x received, but no "
4287 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
4288 return;
4289 }
4290
4291 ql_dbg(ql_dbg_tgt, vha, 0xe02f,
4292 "qla_target(%d): response pkt %p: T %02x C %02x S %02x "
4293 "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
4294 pkt->entry_count, pkt->entry_status, pkt->handle);
4295
4296 /*
4297 * In tgt_stop mode we also should allow all requests to pass.
4298 * Otherwise, some commands can stuck.
4299 */
4300
4301 tgt->irq_cmd_count++;
4302
4303 switch (pkt->entry_type) {
f83adb61 4304 case CTIO_CRC2:
2d70c103
NB		 4305 case CTIO_TYPE7:
4306 {
4307 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
f83adb61
QT		 4308 ql_dbg(ql_dbg_tgt, vha, 0xe030,
4309 "CTIO[0x%x] 12/CTIO7 7A/CRC2: instance %d\n",
4310 entry->entry_type, vha->vp_idx);
2d70c103
NB		 4311 qlt_do_ctio_completion(vha, entry->handle,
4312 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4313 entry);
4314 break;
4315 }
4316
4317 case ACCEPT_TGT_IO_TYPE:
4318 {
4319 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
4320 int rc;
4321 ql_dbg(ql_dbg_tgt, vha, 0xe031,
4322 "ACCEPT_TGT_IO instance %d status %04x "
4323 "lun %04x read/write %d data_length %04x "
4324 "target_id %02x rx_id %04x\n ", vha->vp_idx,
4325 le16_to_cpu(atio->u.isp2x.status),
4326 le16_to_cpu(atio->u.isp2x.lun),
4327 atio->u.isp2x.execution_codes,
4328 le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
4329 atio), atio->u.isp2x.rx_id);
4330 if (atio->u.isp2x.status !=
4331 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
4332 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
4333 "qla_target(%d): ATIO with error "
4334 "status %x received\n", vha->vp_idx,
4335 le16_to_cpu(atio->u.isp2x.status));
4336 break;
4337 }
4338 ql_dbg(ql_dbg_tgt, vha, 0xe032,
4339 "FCP CDB: 0x%02x, sizeof(cdb): %lu",
4340 atio->u.isp2x.cdb[0], (unsigned long
4341 int)sizeof(atio->u.isp2x.cdb));
4342
4343 rc = qlt_handle_cmd_for_atio(vha, atio);
4344 if (unlikely(rc != 0)) {
4345 if (rc == -ESRCH) {
4346#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4347 qlt_send_busy(vha, atio, 0);
4348#else
4349 qlt_send_term_exchange(vha, NULL, atio, 1);
4350#endif
4351 } else {
4352 if (tgt->tgt_stop) {
4353 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
4354 "qla_target: Unable to send "
4355 "command to target, sending TERM "
4356 "EXCHANGE for rsp\n");
4357 qlt_send_term_exchange(vha, NULL,
4358 atio, 1);
4359 } else {
4360 ql_dbg(ql_dbg_tgt, vha, 0xe060,
4361 "qla_target(%d): Unable to send "
4362 "command to target, sending BUSY "
4363 "status\n", vha->vp_idx);
4364 qlt_send_busy(vha, atio, 0);
4365 }
4366 }
4367 }
4368 }
4369 break;
4370
4371 case CONTINUE_TGT_IO_TYPE:
4372 {
4373 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4374 ql_dbg(ql_dbg_tgt, vha, 0xe033,
4375 "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
4376 qlt_do_ctio_completion(vha, entry->handle,
4377 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4378 entry);
4379 break;
4380 }
4381
4382 case CTIO_A64_TYPE:
4383 {
4384 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4385 ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
4386 vha->vp_idx);
4387 qlt_do_ctio_completion(vha, entry->handle,
4388 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4389 entry);
4390 break;
4391 }
4392
4393 case IMMED_NOTIFY_TYPE:
4394 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
4395 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
4396 break;
4397
4398 case NOTIFY_ACK_TYPE:
4399 if (tgt->notify_ack_expected > 0) {
4400 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
4401 ql_dbg(ql_dbg_tgt, vha, 0xe036,
4402 "NOTIFY_ACK seq %08x status %x\n",
4403 le16_to_cpu(entry->u.isp2x.seq_id),
4404 le16_to_cpu(entry->u.isp2x.status));
4405 tgt->notify_ack_expected--;
4406 if (entry->u.isp2x.status !=
4407 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
4408 ql_dbg(ql_dbg_tgt, vha, 0xe061,
4409 "qla_target(%d): NOTIFY_ACK "
4410 "failed %x\n", vha->vp_idx,
4411 le16_to_cpu(entry->u.isp2x.status));
4412 }
4413 } else {
4414 ql_dbg(ql_dbg_tgt, vha, 0xe062,
4415 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
4416 vha->vp_idx);
4417 }
4418 break;
4419
4420 case ABTS_RECV_24XX:
4421 ql_dbg(ql_dbg_tgt, vha, 0xe037,
4422 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
4423 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
4424 break;
4425
4426 case ABTS_RESP_24XX:
4427 if (tgt->abts_resp_expected > 0) {
4428 struct abts_resp_from_24xx_fw *entry =
4429 (struct abts_resp_from_24xx_fw *)pkt;
4430 ql_dbg(ql_dbg_tgt, vha, 0xe038,
4431 "ABTS_RESP_24XX: compl_status %x\n",
4432 entry->compl_status);
4433 tgt->abts_resp_expected--;
4434 if (le16_to_cpu(entry->compl_status) !=
4435 ABTS_RESP_COMPL_SUCCESS) {
4436 if ((entry->error_subcode1 == 0x1E) &&
4437 (entry->error_subcode2 == 0)) {
4438 /*
4439 * We've got a race here: aborted
4440 * exchange not terminated, i.e.
4441 * response for the aborted command was
4442 * sent between the abort request was
4443 * received and processed.
4444 * Unfortunately, the firmware has a
4445 * silly requirement that all aborted
4446 * exchanges must be explicitely
4447 * terminated, otherwise it refuses to
4448 * send responses for the abort
4449 * requests. So, we have to
4450 * (re)terminate the exchange and retry
4451 * the abort response.
4452 */
4453 qlt_24xx_retry_term_exchange(vha,
4454 entry);
4455 } else
4456 ql_dbg(ql_dbg_tgt, vha, 0xe063,
4457 "qla_target(%d): ABTS_RESP_24XX "
4458 "failed %x (subcode %x:%x)",
4459 vha->vp_idx, entry->compl_status,
4460 entry->error_subcode1,
4461 entry->error_subcode2);
4462 }
4463 } else {
4464 ql_dbg(ql_dbg_tgt, vha, 0xe064,
4465 "qla_target(%d): Unexpected ABTS_RESP_24XX "
4466 "received\n", vha->vp_idx);
4467 }
4468 break;
4469
4470 default:
4471 ql_dbg(ql_dbg_tgt, vha, 0xe065,
4472 "qla_target(%d): Received unknown response pkt "
4473 "type %x\n", vha->vp_idx, pkt->entry_type);
4474 break;
4475 }
4476
4477 tgt->irq_cmd_count--;
4478}
4479
4480/*
4481 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4482 */
4483void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
4484 uint16_t *mailbox)
4485{
4486 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4487 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 4488 int login_code;
2d70c103
NB		 4489
4490 ql_dbg(ql_dbg_tgt, vha, 0xe039,
4491 "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
4492 vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
4493 ha->operating_mode, ha->current_topology);
4494
4495 if (!ha->tgt.tgt_ops)
4496 return;
4497
4498 if (unlikely(tgt == NULL)) {
4499 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
4500 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
4501 return;
4502 }
4503
4504 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
4505 IS_QLA2100(ha))
4506 return;
4507 /*
4508 * In tgt_stop mode we also should allow all requests to pass.
4509 * Otherwise, some commands can stuck.
4510 */
4511
4512 tgt->irq_cmd_count++;
4513
4514 switch (code) {
4515 case MBA_RESET: /* Reset */
4516 case MBA_SYSTEM_ERR: /* System Error */
4517 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
4518 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
4519 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
4520 "qla_target(%d): System error async event %#x "
6efb3c0a 4521 "occurred", vha->vp_idx, code);
2d70c103
NB		 4522 break;
4523 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
4524 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4525 break;
4526
4527 case MBA_LOOP_UP:
4528 {
4529 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 4530 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 4531 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4532 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4533 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4534 if (tgt->link_reinit_iocb_pending) {
4535 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
4536 0, 0, 0, 0, 0, 0);
4537 tgt->link_reinit_iocb_pending = 0;
4538 }
4539 break;
4540 }
4541
4542 case MBA_LIP_OCCURRED:
4543 case MBA_LOOP_DOWN:
4544 case MBA_LIP_RESET:
4545 case MBA_RSCN_UPDATE:
4546 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 4547 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 4548 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4549 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4550 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4551 break;
4552
4553 case MBA_PORT_UPDATE:
4554 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
4555 "qla_target(%d): Port update async event %#x "
6efb3c0a 4556 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 4557 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4558 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4559 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
4560
4561 login_code = le16_to_cpu(mailbox[2]);
4562 if (login_code == 0x4)
2d70c103
NB		 4563 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
4564 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 4565 else if (login_code == 0x7)
2d70c103
NB		 4566 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
4567 "Async MB 2: Port Logged Out\n");
4568 break;
4569
4570 default:
4571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
6efb3c0a 4572 "qla_target(%d): Async event %#x occurred: "
4f1d0f19
AC		 4573 "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4574 code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4575 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4576 break;
4577 }
4578
4579 tgt->irq_cmd_count--;
4580}
4581
4582static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
4583 uint16_t loop_id)
4584{
4585 fc_port_t *fcport;
4586 int rc;
4587
4588 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
4589 if (!fcport) {
4590 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
4591 "qla_target(%d): Allocation of tmp FC port failed",
4592 vha->vp_idx);
4593 return NULL;
4594 }
4595
4596 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
4597
4598 fcport->loop_id = loop_id;
4599
4600 rc = qla2x00_get_port_database(vha, fcport, 0);
4601 if (rc != QLA_SUCCESS) {
4602 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
4603 "qla_target(%d): Failed to retrieve fcport "
4604 "information -- get_port_database() returned %x "
4605 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
4606 kfree(fcport);
4607 return NULL;
4608 }
4609
4610 return fcport;
4611}
4612
4613/* Must be called under tgt_mutex */
4614static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
4615 uint8_t *s_id)
4616{
2d70c103
NB		 4617 struct qla_tgt_sess *sess = NULL;
4618 fc_port_t *fcport = NULL;
4619 int rc, global_resets;
4620 uint16_t loop_id = 0;
4621
4622retry:
0e8cd71c
SK		 4623 global_resets =
4624 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 4625
4626 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
4627 if (rc != 0) {
4628 if ((s_id[0] == 0xFF) &&
4629 (s_id[1] == 0xFC)) {
4630 /*
4631 * This is Domain Controller, so it should be
4632 * OK to drop SCSI commands from it.
4633 */
4634 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
4635 "Unable to find initiator with S_ID %x:%x:%x",
4636 s_id[0], s_id[1], s_id[2]);
4637 } else
4638 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
4639 "qla_target(%d): Unable to find "
4640 "initiator with S_ID %x:%x:%x",
4641 vha->vp_idx, s_id[0], s_id[1],
4642 s_id[2]);
4643 return NULL;
4644 }
4645
4646 fcport = qlt_get_port_database(vha, loop_id);
4647 if (!fcport)
4648 return NULL;
4649
4650 if (global_resets !=
0e8cd71c 4651 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 4652 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
4653 "qla_target(%d): global reset during session discovery "
4654 "(counter was %d, new %d), retrying", vha->vp_idx,
4655 global_resets,
0e8cd71c
SK		 4656 atomic_read(&vha->vha_tgt.
4657 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 4658 goto retry;
4659 }
4660
4661 sess = qlt_create_sess(vha, fcport, true);
4662
4663 kfree(fcport);
4664 return sess;
4665}
4666
4667static void qlt_abort_work(struct qla_tgt *tgt,
4668 struct qla_tgt_sess_work_param *prm)
4669{
4670 struct scsi_qla_host *vha = tgt->vha;
4671 struct qla_hw_data *ha = vha->hw;
4672 struct qla_tgt_sess *sess = NULL;
4673 unsigned long flags;
4674 uint32_t be_s_id;
4675 uint8_t s_id[3];
4676 int rc;
4677
4678 spin_lock_irqsave(&ha->hardware_lock, flags);
4679
4680 if (tgt->tgt_stop)
4681 goto out_term;
4682
4683 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
4684 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
4685 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
4686
4687 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4688 (unsigned char *)&be_s_id);
4689 if (!sess) {
4690 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4691
0e8cd71c 4692 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4693 sess = qlt_make_local_sess(vha, s_id);
4694 /* sess has got an extra creation ref */
0e8cd71c 4695 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4696
4697 spin_lock_irqsave(&ha->hardware_lock, flags);
4698 if (!sess)
4699 goto out_term;
4700 } else {
4701 kref_get(&sess->se_sess->sess_kref);
4702 }
4703
4704 if (tgt->tgt_stop)
4705 goto out_term;
4706
4707 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4708 if (rc != 0)
4709 goto out_term;
2d70c103
NB		 4710
4711 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4712 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4713 return;
4714
4715out_term:
4716 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
2d70c103
NB		 4717 if (sess)
4718 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4719 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4720}
4721
4722static void qlt_tmr_work(struct qla_tgt *tgt,
4723 struct qla_tgt_sess_work_param *prm)
4724{
4725 struct atio_from_isp *a = &prm->tm_iocb2;
4726 struct scsi_qla_host *vha = tgt->vha;
4727 struct qla_hw_data *ha = vha->hw;
4728 struct qla_tgt_sess *sess = NULL;
4729 unsigned long flags;
4730 uint8_t *s_id = NULL; /* to hide compiler warnings */
4731 int rc;
4732 uint32_t lun, unpacked_lun;
4733 int lun_size, fn;
4734 void *iocb;
4735
4736 spin_lock_irqsave(&ha->hardware_lock, flags);
4737
4738 if (tgt->tgt_stop)
4739 goto out_term;
4740
4741 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4742 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4743 if (!sess) {
4744 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4745
0e8cd71c 4746 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4747 sess = qlt_make_local_sess(vha, s_id);
4748 /* sess has got an extra creation ref */
0e8cd71c 4749 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4750
4751 spin_lock_irqsave(&ha->hardware_lock, flags);
4752 if (!sess)
4753 goto out_term;
4754 } else {
4755 kref_get(&sess->se_sess->sess_kref);
4756 }
4757
4758 iocb = a;
4759 lun = a->u.isp24.fcp_cmnd.lun;
4760 lun_size = sizeof(lun);
4761 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4762 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4763
4764 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4765 if (rc != 0)
4766 goto out_term;
2d70c103
NB		 4767
4768 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4769 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4770 return;
4771
4772out_term:
4773 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
2d70c103
NB		 4774 if (sess)
4775 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4776 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4777}
4778
4779static void qlt_sess_work_fn(struct work_struct *work)
4780{
4781 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4782 struct scsi_qla_host *vha = tgt->vha;
4783 unsigned long flags;
4784
4785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4786
4787 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4788 while (!list_empty(&tgt->sess_works_list)) {
4789 struct qla_tgt_sess_work_param *prm = list_entry(
4790 tgt->sess_works_list.next, typeof(*prm),
4791 sess_works_list_entry);
4792
4793 /*
4794 * This work can be scheduled on several CPUs at time, so we
4795 * must delete the entry to eliminate double processing
4796 */
4797 list_del(&prm->sess_works_list_entry);
4798
4799 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4800
4801 switch (prm->type) {
4802 case QLA_TGT_SESS_WORK_ABORT:
4803 qlt_abort_work(tgt, prm);
4804 break;
4805 case QLA_TGT_SESS_WORK_TM:
4806 qlt_tmr_work(tgt, prm);
4807 break;
4808 default:
4809 BUG_ON(1);
4810 break;
4811 }
4812
4813 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4814
4815 kfree(prm);
4816 }
4817 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4818}
4819
4820/* Must be called under tgt_host_action_mutex */
4821int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4822{
4823 struct qla_tgt *tgt;
4824
4825 if (!QLA_TGT_MODE_ENABLED())
4826 return 0;
4827
33c36c0a
AE		 4828 if (!IS_TGT_MODE_CAPABLE(ha)) {
4829 ql_log(ql_log_warn, base_vha, 0xe070,
4830 "This adapter does not support target mode.\n");
4831 return 0;
4832 }
4833
2d70c103 4834 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 4835 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 4836
0e8cd71c 4837 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 4838
4839 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4840 if (!tgt) {
4841 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4842 "Unable to allocate struct qla_tgt\n");
4843 return -ENOMEM;
4844 }
4845
4846 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4847 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4848
4849 tgt->ha = ha;
4850 tgt->vha = base_vha;
4851 init_waitqueue_head(&tgt->waitQ);
4852 INIT_LIST_HEAD(&tgt->sess_list);
4853 INIT_LIST_HEAD(&tgt->del_sess_list);
4854 INIT_DELAYED_WORK(&tgt->sess_del_work,
4855 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4856 spin_lock_init(&tgt->sess_work_lock);
4857 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4858 INIT_LIST_HEAD(&tgt->sess_works_list);
4859 spin_lock_init(&tgt->srr_lock);
4860 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4861 INIT_LIST_HEAD(&tgt->srr_imm_list);
4862 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4863 atomic_set(&tgt->tgt_global_resets_count, 0);
4864
0e8cd71c 4865 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 4866
4867 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4868 "qla_target(%d): using 64 Bit PCI addressing",
4869 base_vha->vp_idx);
4870 tgt->tgt_enable_64bit_addr = 1;
4871 /* 3 is reserved */
4872 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4873 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4874 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4875
ddb95145
NB		 4876 if (base_vha->fc_vport)
4877 return 0;
4878
2d70c103
NB		 4879 mutex_lock(&qla_tgt_mutex);
4880 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4881 mutex_unlock(&qla_tgt_mutex);
4882
4883 return 0;
4884}
4885
4886/* Must be called under tgt_host_action_mutex */
4887int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4888{
0e8cd71c 4889 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 4890 return 0;
4891
ddb95145
NB		 4892 if (vha->fc_vport) {
4893 qlt_release(vha->vha_tgt.qla_tgt);
4894 return 0;
4895 }
2d70c103 4896 mutex_lock(&qla_tgt_mutex);
0e8cd71c 4897 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 4898 mutex_unlock(&qla_tgt_mutex);
4899
4900 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4901 vha->host_no, ha);
0e8cd71c 4902 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 4903
4904 return 0;
4905}
4906
4907static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4908 unsigned char *b)
4909{
4910 int i;
4911
4912 pr_debug("qla2xxx HW vha->node_name: ");
4913 for (i = 0; i < WWN_SIZE; i++)
4914 pr_debug("%02x ", vha->node_name[i]);
4915 pr_debug("\n");
4916 pr_debug("qla2xxx HW vha->port_name: ");
4917 for (i = 0; i < WWN_SIZE; i++)
4918 pr_debug("%02x ", vha->port_name[i]);
4919 pr_debug("\n");
4920
4921 pr_debug("qla2xxx passed configfs WWPN: ");
4922 put_unaligned_be64(wwpn, b);
4923 for (i = 0; i < WWN_SIZE; i++)
4924 pr_debug("%02x ", b[i]);
4925 pr_debug("\n");
4926}
4927
4928/**
4929 * qla_tgt_lport_register - register lport with external module
4930 *
4931 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4932 * @wwpn: Passwd FC target WWPN
4933 * @callback: lport initialization callback for tcm_qla2xxx code
4934 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4935 */
49a47f2c
NB		 4936int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
4937 u64 npiv_wwpn, u64 npiv_wwnn,
4938 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 4939{
4940 struct qla_tgt *tgt;
4941 struct scsi_qla_host *vha;
4942 struct qla_hw_data *ha;
4943 struct Scsi_Host *host;
4944 unsigned long flags;
4945 int rc;
4946 u8 b[WWN_SIZE];
4947
4948 mutex_lock(&qla_tgt_mutex);
4949 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4950 vha = tgt->vha;
4951 ha = vha->hw;
4952
4953 host = vha->host;
4954 if (!host)
4955 continue;
4956
2d70c103
NB		 4957 if (!(host->hostt->supported_mode & MODE_TARGET))
4958 continue;
4959
4960 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 4961 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 4962 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4963 host->host_no);
4964 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4965 continue;
4966 }
ddb95145
NB		 4967 if (tgt->tgt_stop) {
4968 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
4969 host->host_no);
4970 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4971 continue;
4972 }
2d70c103
NB		 4973 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4974
4975 if (!scsi_host_get(host)) {
4976 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4977 "Unable to scsi_host_get() for"
4978 " qla2xxx scsi_host\n");
4979 continue;
4980 }
49a47f2c 4981 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 4982
4983 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4984 scsi_host_put(host);
4985 continue;
4986 }
49a47f2c
NB		 4987 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
4988 if (rc != 0)
4989 scsi_host_put(host);
4990
ddb95145 4991 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 4992 return rc;
4993 }
4994 mutex_unlock(&qla_tgt_mutex);
4995
4996 return -ENODEV;
4997}
4998EXPORT_SYMBOL(qlt_lport_register);
4999
5000/**
5001 * qla_tgt_lport_deregister - Degister lport
5002 *
5003 * @vha: Registered scsi_qla_host pointer
5004 */
5005void qlt_lport_deregister(struct scsi_qla_host *vha)
5006{
5007 struct qla_hw_data *ha = vha->hw;
5008 struct Scsi_Host *sh = vha->host;
5009 /*
5010 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
5011 */
0e8cd71c 5012 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 5013 ha->tgt.tgt_ops = NULL;
5014 /*
5015 * Release the Scsi_Host reference for the underlying qla2xxx host
5016 */
5017 scsi_host_put(sh);
5018}
5019EXPORT_SYMBOL(qlt_lport_deregister);
5020
5021/* Must be called under HW lock */
5022void qlt_set_mode(struct scsi_qla_host *vha)
5023{
5024 struct qla_hw_data *ha = vha->hw;
5025
5026 switch (ql2x_ini_mode) {
5027 case QLA2XXX_INI_MODE_DISABLED:
5028 case QLA2XXX_INI_MODE_EXCLUSIVE:
5029 vha->host->active_mode = MODE_TARGET;
5030 break;
5031 case QLA2XXX_INI_MODE_ENABLED:
5032 vha->host->active_mode |= MODE_TARGET;
5033 break;
5034 default:
5035 break;
5036 }
5037
5038 if (ha->tgt.ini_mode_force_reverse)
5039 qla_reverse_ini_mode(vha);
5040}
5041
5042/* Must be called under HW lock */
5043void qlt_clear_mode(struct scsi_qla_host *vha)
5044{
5045 struct qla_hw_data *ha = vha->hw;
5046
5047 switch (ql2x_ini_mode) {
5048 case QLA2XXX_INI_MODE_DISABLED:
5049 vha->host->active_mode = MODE_UNKNOWN;
5050 break;
5051 case QLA2XXX_INI_MODE_EXCLUSIVE:
5052 vha->host->active_mode = MODE_INITIATOR;
5053 break;
5054 case QLA2XXX_INI_MODE_ENABLED:
5055 vha->host->active_mode &= ~MODE_TARGET;
5056 break;
5057 default:
5058 break;
5059 }
5060
5061 if (ha->tgt.ini_mode_force_reverse)
5062 qla_reverse_ini_mode(vha);
5063}
5064
5065/*
5066 * qla_tgt_enable_vha - NO LOCK HELD
5067 *
5068 * host_reset, bring up w/ Target Mode Enabled
5069 */
5070void
5071qlt_enable_vha(struct scsi_qla_host *vha)
5072{
5073 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5074 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5075 unsigned long flags;
0e8cd71c 5076 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 5077
5078 if (!tgt) {
5079 ql_dbg(ql_dbg_tgt, vha, 0xe069,
5080 "Unable to locate qla_tgt pointer from"
5081 " struct qla_hw_data\n");
5082 dump_stack();
5083 return;
5084 }
5085
5086 spin_lock_irqsave(&ha->hardware_lock, flags);
5087 tgt->tgt_stopped = 0;
5088 qlt_set_mode(vha);
5089 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5090
0e8cd71c
SK		 5091 if (vha->vp_idx) {
5092 qla24xx_disable_vp(vha);
5093 qla24xx_enable_vp(vha);
5094 } else {
5095 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
5096 qla2xxx_wake_dpc(base_vha);
5097 qla2x00_wait_for_hba_online(base_vha);
5098 }
2d70c103
NB		 5099}
5100EXPORT_SYMBOL(qlt_enable_vha);
5101
5102/*
5103 * qla_tgt_disable_vha - NO LOCK HELD
5104 *
5105 * Disable Target Mode and reset the adapter
5106 */
5107void
5108qlt_disable_vha(struct scsi_qla_host *vha)
5109{
5110 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5111 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5112 unsigned long flags;
5113
5114 if (!tgt) {
5115 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
5116 "Unable to locate qla_tgt pointer from"
5117 " struct qla_hw_data\n");
5118 dump_stack();
5119 return;
5120 }
5121
5122 spin_lock_irqsave(&ha->hardware_lock, flags);
5123 qlt_clear_mode(vha);
5124 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5125
5126 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5127 qla2xxx_wake_dpc(vha);
5128 qla2x00_wait_for_hba_online(vha);
5129}
5130
5131/*
5132 * Called from qla_init.c:qla24xx_vport_create() contex to setup
5133 * the target mode specific struct scsi_qla_host and struct qla_hw_data
5134 * members.
5135 */
5136void
5137qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
5138{
5139 if (!qla_tgt_mode_enabled(vha))
5140 return;
5141
0e8cd71c
SK		 5142 vha->vha_tgt.qla_tgt = NULL;
5143
5144 mutex_init(&vha->vha_tgt.tgt_mutex);
5145 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5146
5147 qlt_clear_mode(vha);
5148
5149 /*
5150 * NOTE: Currently the value is kept the same for <24xx and
5151 * >=24xx ISPs. If it is necessary to change it,
5152 * the check should be added for specific ISPs,
5153 * assigning the value appropriately.
5154 */
5155 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 5156
5157 qlt_add_target(ha, vha);
2d70c103
NB		 5158}
5159
5160void
5161qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
5162{
5163 /*
5164 * FC-4 Feature bit 0 indicates target functionality to the name server.
5165 */
5166 if (qla_tgt_mode_enabled(vha)) {
5167 if (qla_ini_mode_enabled(vha))
5168 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
5169 else
5170 ct_req->req.rff_id.fc4_feature = BIT_0;
5171 } else if (qla_ini_mode_enabled(vha)) {
5172 ct_req->req.rff_id.fc4_feature = BIT_1;
5173 }
5174}
5175
5176/*
5177 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
5178 * @ha: HA context
5179 *
5180 * Beginning of ATIO ring has initialization control block already built
5181 * by nvram config routine.
5182 *
5183 * Returns 0 on success.
5184 */
5185void
5186qlt_init_atio_q_entries(struct scsi_qla_host *vha)
5187{
5188 struct qla_hw_data *ha = vha->hw;
5189 uint16_t cnt;
5190 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
5191
5192 if (!qla_tgt_mode_enabled(vha))
5193 return;
5194
5195 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
5196 pkt->u.raw.signature = ATIO_PROCESSED;
5197 pkt++;
5198 }
5199
5200}
5201
5202/*
5203 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
5204 * @ha: SCSI driver HA context
5205 */
5206void
5207qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
5208{
5209 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 5210 struct atio_from_isp *pkt;
5211 int cnt, i;
5212
5213 if (!vha->flags.online)
5214 return;
5215
5216 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
5217 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5218 cnt = pkt->u.raw.entry_count;
5219
5220 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
5221
5222 for (i = 0; i < cnt; i++) {
5223 ha->tgt.atio_ring_index++;
5224 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
5225 ha->tgt.atio_ring_index = 0;
5226 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
5227 } else
5228 ha->tgt.atio_ring_ptr++;
5229
5230 pkt->u.raw.signature = ATIO_PROCESSED;
5231 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5232 }
5233 wmb();
5234 }
5235
5236 /* Adjust ring index */
aa230bc5 5237 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 5238}
5239
5240void
aa230bc5 5241qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 5242{
5243 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 5244 if (!QLA_TGT_MODE_ENABLED())
5245 return;
2d70c103 5246
aa230bc5
AE		 5247 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
5248 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
5249 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
5250
5251 if (IS_ATIO_MSIX_CAPABLE(ha)) {
5252 struct qla_msix_entry *msix = &ha->msix_entries[2];
5253 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
5254
5255 icb->msix_atio = cpu_to_le16(msix->entry);
5256 ql_dbg(ql_dbg_init, vha, 0xf072,
5257 "Registering ICB vector 0x%x for atio que.\n",
5258 msix->entry);
2d70c103
NB		 5259 }
5260}
5261
5262void
5263qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
5264{
5265 struct qla_hw_data *ha = vha->hw;
5266
5267 if (qla_tgt_mode_enabled(vha)) {
5268 if (!ha->tgt.saved_set) {
5269 /* We save only once */
5270 ha->tgt.saved_exchange_count = nv->exchange_count;
5271 ha->tgt.saved_firmware_options_1 =
5272 nv->firmware_options_1;
5273 ha->tgt.saved_firmware_options_2 =
5274 nv->firmware_options_2;
5275 ha->tgt.saved_firmware_options_3 =
5276 nv->firmware_options_3;
5277 ha->tgt.saved_set = 1;
5278 }
5279
5280 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5281
5282 /* Enable target mode */
5283 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5284
5285 /* Disable ini mode, if requested */
5286 if (!qla_ini_mode_enabled(vha))
5287 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
5288
5289 /* Disable Full Login after LIP */
5290 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5291 /* Enable initial LIP */
5292 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5293 /* Enable FC tapes support */
5294 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5295 /* Disable Full Login after LIP */
5296 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5297 /* Enable target PRLI control */
5298 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5299 } else {
5300 if (ha->tgt.saved_set) {
5301 nv->exchange_count = ha->tgt.saved_exchange_count;
5302 nv->firmware_options_1 =
5303 ha->tgt.saved_firmware_options_1;
5304 nv->firmware_options_2 =
5305 ha->tgt.saved_firmware_options_2;
5306 nv->firmware_options_3 =
5307 ha->tgt.saved_firmware_options_3;
5308 }
5309 return;
5310 }
5311
5312 /* out-of-order frames reassembly */
5313 nv->firmware_options_3 |= BIT_6|BIT_9;
5314
5315 if (ha->tgt.enable_class_2) {
5316 if (vha->flags.init_done)
5317 fc_host_supported_classes(vha->host) =
5318 FC_COS_CLASS2 | FC_COS_CLASS3;
5319
5320 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5321 } else {
5322 if (vha->flags.init_done)
5323 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5324
5325 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5326 }
5327}
5328
5329void
5330qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
5331 struct init_cb_24xx *icb)
5332{
5333 struct qla_hw_data *ha = vha->hw;
5334
5335 if (ha->tgt.node_name_set) {
5336 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5337 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5338 }
5339}
5340
aa230bc5
AE		 5341void
5342qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
5343{
5344 struct qla_hw_data *ha = vha->hw;
5345
5346 if (!QLA_TGT_MODE_ENABLED())
5347 return;
5348
5349 if (qla_tgt_mode_enabled(vha)) {
5350 if (!ha->tgt.saved_set) {
5351 /* We save only once */
5352 ha->tgt.saved_exchange_count = nv->exchange_count;
5353 ha->tgt.saved_firmware_options_1 =
5354 nv->firmware_options_1;
5355 ha->tgt.saved_firmware_options_2 =
5356 nv->firmware_options_2;
5357 ha->tgt.saved_firmware_options_3 =
5358 nv->firmware_options_3;
5359 ha->tgt.saved_set = 1;
5360 }
5361
5362 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5363
5364 /* Enable target mode */
5365 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5366
5367 /* Disable ini mode, if requested */
5368 if (!qla_ini_mode_enabled(vha))
5369 nv->firmware_options_1 |=
5370 __constant_cpu_to_le32(BIT_5);
5371
5372 /* Disable Full Login after LIP */
5373 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5374 /* Enable initial LIP */
5375 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5376 /* Enable FC tapes support */
5377 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5378 /* Disable Full Login after LIP */
5379 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5380 /* Enable target PRLI control */
5381 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5382 } else {
5383 if (ha->tgt.saved_set) {
5384 nv->exchange_count = ha->tgt.saved_exchange_count;
5385 nv->firmware_options_1 =
5386 ha->tgt.saved_firmware_options_1;
5387 nv->firmware_options_2 =
5388 ha->tgt.saved_firmware_options_2;
5389 nv->firmware_options_3 =
5390 ha->tgt.saved_firmware_options_3;
5391 }
5392 return;
5393 }
5394
5395 /* out-of-order frames reassembly */
5396 nv->firmware_options_3 |= BIT_6|BIT_9;
5397
5398 if (ha->tgt.enable_class_2) {
5399 if (vha->flags.init_done)
5400 fc_host_supported_classes(vha->host) =
5401 FC_COS_CLASS2 | FC_COS_CLASS3;
5402
5403 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5404 } else {
5405 if (vha->flags.init_done)
5406 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5407
5408 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5409 }
5410}
5411
5412void
5413qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
5414 struct init_cb_81xx *icb)
5415{
5416 struct qla_hw_data *ha = vha->hw;
5417
5418 if (!QLA_TGT_MODE_ENABLED())
5419 return;
5420
5421 if (ha->tgt.node_name_set) {
5422 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5423 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5424 }
5425}
5426
5427void
5428qlt_83xx_iospace_config(struct qla_hw_data *ha)
5429{
5430 if (!QLA_TGT_MODE_ENABLED())
5431 return;
5432
5433 ha->msix_count += 1; /* For ATIO Q */
5434}
5435
2d70c103
NB		 5436int
5437qlt_24xx_process_response_error(struct scsi_qla_host *vha,
5438 struct sts_entry_24xx *pkt)
5439{
5440 switch (pkt->entry_type) {
5441 case ABTS_RECV_24XX:
5442 case ABTS_RESP_24XX:
5443 case CTIO_TYPE7:
5444 case NOTIFY_ACK_TYPE:
f83adb61 5445 case CTIO_CRC2:
2d70c103
NB		 5446 return 1;
5447 default:
5448 return 0;
5449 }
5450}
5451
5452void
5453qlt_modify_vp_config(struct scsi_qla_host *vha,
5454 struct vp_config_entry_24xx *vpmod)
5455{
5456 if (qla_tgt_mode_enabled(vha))
5457 vpmod->options_idx1 &= ~BIT_5;
5458 /* Disable ini mode, if requested */
5459 if (!qla_ini_mode_enabled(vha))
5460 vpmod->options_idx1 &= ~BIT_4;
5461}
5462
5463void
5464qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
5465{
5466 if (!QLA_TGT_MODE_ENABLED())
5467 return;
5468
aa230bc5
AE		 5469 if (ha->mqenable || IS_QLA83XX(ha)) {
5470 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
5471 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
5472 } else {
5473 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
5474 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
5475 }
5476
0e8cd71c
SK		 5477 mutex_init(&base_vha->vha_tgt.tgt_mutex);
5478 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5479 qlt_clear_mode(base_vha);
5480}
5481
aa230bc5
AE		 5482irqreturn_t
5483qla83xx_msix_atio_q(int irq, void *dev_id)
5484{
5485 struct rsp_que *rsp;
5486 scsi_qla_host_t *vha;
5487 struct qla_hw_data *ha;
5488 unsigned long flags;
5489
5490 rsp = (struct rsp_que *) dev_id;
5491 ha = rsp->hw;
5492 vha = pci_get_drvdata(ha->pdev);
5493
5494 spin_lock_irqsave(&ha->hardware_lock, flags);
5495
5496 qlt_24xx_process_atio_queue(vha);
5497 qla24xx_process_response_queue(vha, rsp);
5498
5499 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5500
5501 return IRQ_HANDLED;
5502}
5503
2d70c103
NB		 5504int
5505qlt_mem_alloc(struct qla_hw_data *ha)
5506{
5507 if (!QLA_TGT_MODE_ENABLED())
5508 return 0;
5509
5510 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
5511 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
5512 if (!ha->tgt.tgt_vp_map)
5513 return -ENOMEM;
5514
5515 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
5516 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
5517 &ha->tgt.atio_dma, GFP_KERNEL);
5518 if (!ha->tgt.atio_ring) {
5519 kfree(ha->tgt.tgt_vp_map);
5520 return -ENOMEM;
5521 }
5522 return 0;
5523}
5524
5525void
5526qlt_mem_free(struct qla_hw_data *ha)
5527{
5528 if (!QLA_TGT_MODE_ENABLED())
5529 return;
5530
5531 if (ha->tgt.atio_ring) {
5532 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
5533 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
5534 ha->tgt.atio_dma);
5535 }
5536 kfree(ha->tgt.tgt_vp_map);
5537}
5538
5539/* vport_slock to be held by the caller */
5540void
5541qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
5542{
5543 if (!QLA_TGT_MODE_ENABLED())
5544 return;
5545
5546 switch (cmd) {
5547 case SET_VP_IDX:
5548 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
5549 break;
5550 case SET_AL_PA:
5551 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
5552 break;
5553 case RESET_VP_IDX:
5554 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
5555 break;
5556 case RESET_AL_PA:
5557 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
5558 break;
5559 }
5560}
5561
5562static int __init qlt_parse_ini_mode(void)
5563{
5564 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
5565 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
5566 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
5567 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
5568 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
5569 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
5570 else
5571 return false;
5572
5573 return true;
5574}
5575
5576int __init qlt_init(void)
5577{
5578 int ret;
5579
5580 if (!qlt_parse_ini_mode()) {
5581 ql_log(ql_log_fatal, NULL, 0xe06b,
5582 "qlt_parse_ini_mode() failed\n");
5583 return -EINVAL;
5584 }
5585
5586 if (!QLA_TGT_MODE_ENABLED())
5587 return 0;
5588
2d70c103
NB		 5589 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
5590 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
5591 qla_tgt_mgmt_cmd), 0, NULL);
5592 if (!qla_tgt_mgmt_cmd_cachep) {
5593 ql_log(ql_log_fatal, NULL, 0xe06d,
5594 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 5595 return -ENOMEM;
2d70c103
NB		 5596 }
5597
5598 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
5599 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
5600 if (!qla_tgt_mgmt_cmd_mempool) {
5601 ql_log(ql_log_fatal, NULL, 0xe06e,
5602 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
5603 ret = -ENOMEM;
5604 goto out_mgmt_cmd_cachep;
5605 }
5606
5607 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
5608 if (!qla_tgt_wq) {
5609 ql_log(ql_log_fatal, NULL, 0xe06f,
5610 "alloc_workqueue for qla_tgt_wq failed\n");
5611 ret = -ENOMEM;
5612 goto out_cmd_mempool;
5613 }
5614 /*
5615 * Return 1 to signal that initiator-mode is being disabled
5616 */
5617 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
5618
5619out_cmd_mempool:
5620 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5621out_mgmt_cmd_cachep:
5622 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 5623 return ret;
5624}
5625
5626void qlt_exit(void)
5627{
5628 if (!QLA_TGT_MODE_ENABLED())
5629 return;
5630
5631 destroy_workqueue(qla_tgt_wq);
5632 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5633 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 5634}
Linux kernel - Deliverables
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