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qla2xxx: Increase the request queue size to 8K for ISP2031
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
d154f350
AE		 45static int ql2xtgt_tape_enable;
46module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
2d70c103
NB		 50static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51module_param(qlini_mode, charp, S_IRUGO);
52MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
58 "\"enabled\" (default) - initiator mode will always stay enabled.");
59
aa230bc5 60int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103
NB		 61
62/*
63 * From scsi/fc/fc_fcp.h
64 */
65enum fcp_resp_rsp_codes {
66 FCP_TMF_CMPL = 0,
67 FCP_DATA_LEN_INVALID = 1,
68 FCP_CMND_FIELDS_INVALID = 2,
69 FCP_DATA_PARAM_MISMATCH = 3,
70 FCP_TMF_REJECTED = 4,
71 FCP_TMF_FAILED = 5,
72 FCP_TMF_INVALID_LUN = 9,
73};
74
75/*
76 * fc_pri_ta from scsi/fc/fc_fcp.h
77 */
78#define FCP_PTA_SIMPLE 0 /* simple task attribute */
79#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
80#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 81#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 82#define FCP_PTA_MASK 7 /* mask for task attribute field */
83#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
84#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
85
86/*
87 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
88 * must be called under HW lock and could unlock/lock it inside.
89 * It isn't an issue, since in the current implementation on the time when
90 * those functions are called:
91 *
92 * - Either context is IRQ and only IRQ handler can modify HW data,
93 * including rings related fields,
94 *
95 * - Or access to target mode variables from struct qla_tgt doesn't
96 * cross those functions boundaries, except tgt_stop, which
97 * additionally protected by irq_cmd_count.
98 */
99/* Predefs for callbacks handed to qla2xxx LLD */
100static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
101 struct atio_from_isp *pkt);
102static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
103static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
104 int fn, void *iocb, int flags);
105static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
106 *cmd, struct atio_from_isp *atio, int ha_locked);
107static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
108 struct qla_tgt_srr_imm *imm, int ha_lock);
b6a029e1
AE		 109static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
110 struct qla_tgt_cmd *cmd);
2d70c103
NB		 111/*
112 * Global Variables
113 */
2d70c103
NB		 114static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
115static mempool_t *qla_tgt_mgmt_cmd_mempool;
116static struct workqueue_struct *qla_tgt_wq;
117static DEFINE_MUTEX(qla_tgt_mutex);
118static LIST_HEAD(qla_tgt_glist);
119
120/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
121static struct qla_tgt_sess *qlt_find_sess_by_port_name(
122 struct qla_tgt *tgt,
123 const uint8_t *port_name)
124{
125 struct qla_tgt_sess *sess;
126
127 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
128 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
129 return sess;
130 }
131
132 return NULL;
133}
134
135/* Might release hw lock, then reaquire!! */
136static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
137{
138 /* Send marker if required */
139 if (unlikely(vha->marker_needed != 0)) {
140 int rc = qla2x00_issue_marker(vha, vha_locked);
141 if (rc != QLA_SUCCESS) {
142 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
143 "qla_target(%d): issue_marker() failed\n",
144 vha->vp_idx);
145 }
146 return rc;
147 }
148 return QLA_SUCCESS;
149}
150
151static inline
152struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
153 uint8_t *d_id)
154{
155 struct qla_hw_data *ha = vha->hw;
156 uint8_t vp_idx;
157
158 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
159 return NULL;
160
161 if (vha->d_id.b.al_pa == d_id[2])
162 return vha;
163
164 BUG_ON(ha->tgt.tgt_vp_map == NULL);
165 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
166 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
167 return ha->tgt.tgt_vp_map[vp_idx].vha;
168
169 return NULL;
170}
171
172static inline
173struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
174 uint16_t vp_idx)
175{
176 struct qla_hw_data *ha = vha->hw;
177
178 if (vha->vp_idx == vp_idx)
179 return vha;
180
181 BUG_ON(ha->tgt.tgt_vp_map == NULL);
182 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
183 return ha->tgt.tgt_vp_map[vp_idx].vha;
184
185 return NULL;
186}
187
188void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
189 struct atio_from_isp *atio)
190{
f83adb61
QT		 191 ql_dbg(ql_dbg_tgt, vha, 0xe072,
192 "%s: qla_target(%d): type %x ox_id %04x\n",
193 __func__, vha->vp_idx, atio->u.raw.entry_type,
194 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
195
2d70c103
NB		 196 switch (atio->u.raw.entry_type) {
197 case ATIO_TYPE7:
198 {
199 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
200 atio->u.isp24.fcp_hdr.d_id);
201 if (unlikely(NULL == host)) {
202 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
203 "qla_target(%d): Received ATIO_TYPE7 "
204 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
205 atio->u.isp24.fcp_hdr.d_id[0],
206 atio->u.isp24.fcp_hdr.d_id[1],
207 atio->u.isp24.fcp_hdr.d_id[2]);
208 break;
209 }
210 qlt_24xx_atio_pkt(host, atio);
211 break;
212 }
213
214 case IMMED_NOTIFY_TYPE:
215 {
216 struct scsi_qla_host *host = vha;
217 struct imm_ntfy_from_isp *entry =
218 (struct imm_ntfy_from_isp *)atio;
219
220 if ((entry->u.isp24.vp_index != 0xFF) &&
221 (entry->u.isp24.nport_handle != 0xFFFF)) {
222 host = qlt_find_host_by_vp_idx(vha,
223 entry->u.isp24.vp_index);
224 if (unlikely(!host)) {
225 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
226 "qla_target(%d): Received "
227 "ATIO (IMMED_NOTIFY_TYPE) "
228 "with unknown vp_index %d\n",
229 vha->vp_idx, entry->u.isp24.vp_index);
230 break;
231 }
232 }
233 qlt_24xx_atio_pkt(host, atio);
234 break;
235 }
236
237 default:
238 ql_dbg(ql_dbg_tgt, vha, 0xe040,
239 "qla_target(%d): Received unknown ATIO atio "
240 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
241 break;
242 }
243
244 return;
245}
246
247void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
248{
249 switch (pkt->entry_type) {
f83adb61
QT		 250 case CTIO_CRC2:
251 ql_dbg(ql_dbg_tgt, vha, 0xe073,
252 "qla_target(%d):%s: CRC2 Response pkt\n",
253 vha->vp_idx, __func__);
2d70c103
NB		 254 case CTIO_TYPE7:
255 {
256 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
257 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
258 entry->vp_index);
259 if (unlikely(!host)) {
260 ql_dbg(ql_dbg_tgt, vha, 0xe041,
261 "qla_target(%d): Response pkt (CTIO_TYPE7) "
262 "received, with unknown vp_index %d\n",
263 vha->vp_idx, entry->vp_index);
264 break;
265 }
266 qlt_response_pkt(host, pkt);
267 break;
268 }
269
270 case IMMED_NOTIFY_TYPE:
271 {
272 struct scsi_qla_host *host = vha;
273 struct imm_ntfy_from_isp *entry =
274 (struct imm_ntfy_from_isp *)pkt;
275
276 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
277 if (unlikely(!host)) {
278 ql_dbg(ql_dbg_tgt, vha, 0xe042,
279 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
280 "received, with unknown vp_index %d\n",
281 vha->vp_idx, entry->u.isp24.vp_index);
282 break;
283 }
284 qlt_response_pkt(host, pkt);
285 break;
286 }
287
288 case NOTIFY_ACK_TYPE:
289 {
290 struct scsi_qla_host *host = vha;
291 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
292
293 if (0xFF != entry->u.isp24.vp_index) {
294 host = qlt_find_host_by_vp_idx(vha,
295 entry->u.isp24.vp_index);
296 if (unlikely(!host)) {
297 ql_dbg(ql_dbg_tgt, vha, 0xe043,
298 "qla_target(%d): Response "
299 "pkt (NOTIFY_ACK_TYPE) "
300 "received, with unknown "
301 "vp_index %d\n", vha->vp_idx,
302 entry->u.isp24.vp_index);
303 break;
304 }
305 }
306 qlt_response_pkt(host, pkt);
307 break;
308 }
309
310 case ABTS_RECV_24XX:
311 {
312 struct abts_recv_from_24xx *entry =
313 (struct abts_recv_from_24xx *)pkt;
314 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
315 entry->vp_index);
316 if (unlikely(!host)) {
317 ql_dbg(ql_dbg_tgt, vha, 0xe044,
318 "qla_target(%d): Response pkt "
319 "(ABTS_RECV_24XX) received, with unknown "
320 "vp_index %d\n", vha->vp_idx, entry->vp_index);
321 break;
322 }
323 qlt_response_pkt(host, pkt);
324 break;
325 }
326
327 case ABTS_RESP_24XX:
328 {
329 struct abts_resp_to_24xx *entry =
330 (struct abts_resp_to_24xx *)pkt;
331 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
332 entry->vp_index);
333 if (unlikely(!host)) {
334 ql_dbg(ql_dbg_tgt, vha, 0xe045,
335 "qla_target(%d): Response pkt "
336 "(ABTS_RECV_24XX) received, with unknown "
337 "vp_index %d\n", vha->vp_idx, entry->vp_index);
338 break;
339 }
340 qlt_response_pkt(host, pkt);
341 break;
342 }
343
344 default:
345 qlt_response_pkt(vha, pkt);
346 break;
347 }
348
349}
350
351static void qlt_free_session_done(struct work_struct *work)
352{
353 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
354 free_work);
355 struct qla_tgt *tgt = sess->tgt;
356 struct scsi_qla_host *vha = sess->vha;
357 struct qla_hw_data *ha = vha->hw;
358
359 BUG_ON(!tgt);
360 /*
361 * Release the target session for FC Nexus from fabric module code.
362 */
363 if (sess->se_sess != NULL)
364 ha->tgt.tgt_ops->free_session(sess);
365
366 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
367 "Unregistration of sess %p finished\n", sess);
368
369 kfree(sess);
370 /*
371 * We need to protect against race, when tgt is freed before or
372 * inside wake_up()
373 */
374 tgt->sess_count--;
375 if (tgt->sess_count == 0)
376 wake_up_all(&tgt->waitQ);
377}
378
379/* ha->hardware_lock supposed to be held on entry */
380void qlt_unreg_sess(struct qla_tgt_sess *sess)
381{
382 struct scsi_qla_host *vha = sess->vha;
383
384 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
385
386 list_del(&sess->sess_list_entry);
387 if (sess->deleted)
388 list_del(&sess->del_list_entry);
389
390 INIT_WORK(&sess->free_work, qlt_free_session_done);
391 schedule_work(&sess->free_work);
392}
393EXPORT_SYMBOL(qlt_unreg_sess);
394
395/* ha->hardware_lock supposed to be held on entry */
396static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
397{
398 struct qla_hw_data *ha = vha->hw;
399 struct qla_tgt_sess *sess = NULL;
400 uint32_t unpacked_lun, lun = 0;
401 uint16_t loop_id;
402 int res = 0;
403 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
404 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
405
406 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
407 if (loop_id == 0xFFFF) {
408#if 0 /* FIXME: Re-enable Global event handling.. */
409 /* Global event */
410 atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
411 qlt_clear_tgt_db(ha->tgt.qla_tgt, 1);
412 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
413 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
414 typeof(*sess), sess_list_entry);
415 switch (mcmd) {
416 case QLA_TGT_NEXUS_LOSS_SESS:
417 mcmd = QLA_TGT_NEXUS_LOSS;
418 break;
419 case QLA_TGT_ABORT_ALL_SESS:
420 mcmd = QLA_TGT_ABORT_ALL;
421 break;
422 case QLA_TGT_NEXUS_LOSS:
423 case QLA_TGT_ABORT_ALL:
424 break;
425 default:
426 ql_dbg(ql_dbg_tgt, vha, 0xe046,
427 "qla_target(%d): Not allowed "
428 "command %x in %s", vha->vp_idx,
429 mcmd, __func__);
430 sess = NULL;
431 break;
432 }
433 } else
434 sess = NULL;
435#endif
436 } else {
437 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
438 }
439
440 ql_dbg(ql_dbg_tgt, vha, 0xe000,
441 "Using sess for qla_tgt_reset: %p\n", sess);
442 if (!sess) {
443 res = -ESRCH;
444 return res;
445 }
446
447 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 448 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
449 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 450 mcmd, loop_id);
451
452 lun = a->u.isp24.fcp_cmnd.lun;
453 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
454
455 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
456 iocb, QLA24XX_MGMT_SEND_NACK);
457}
458
459/* ha->hardware_lock supposed to be held on entry */
460static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
461 bool immediate)
462{
463 struct qla_tgt *tgt = sess->tgt;
464 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
465
466 if (sess->deleted)
467 return;
468
469 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
470 "Scheduling sess %p for deletion\n", sess);
471 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
472 sess->deleted = 1;
473
474 if (immediate)
475 dev_loss_tmo = 0;
476
477 sess->expires = jiffies + dev_loss_tmo * HZ;
478
479 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
7b833558 480 "qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
2d70c103 481 "deletion in %u secs (expires: %lu) immed: %d\n",
7b833558
OK		 482 sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
483 sess->expires, immediate);
2d70c103
NB		 484
485 if (immediate)
486 schedule_delayed_work(&tgt->sess_del_work, 0);
487 else
488 schedule_delayed_work(&tgt->sess_del_work,
63832aab 489 sess->expires - jiffies);
2d70c103
NB		 490}
491
492/* ha->hardware_lock supposed to be held on entry */
493static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
494{
495 struct qla_tgt_sess *sess;
496
497 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
498 qlt_schedule_sess_for_deletion(sess, true);
499
500 /* At this point tgt could be already dead */
501}
502
503static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
504 uint16_t *loop_id)
505{
506 struct qla_hw_data *ha = vha->hw;
507 dma_addr_t gid_list_dma;
508 struct gid_list_info *gid_list;
509 char *id_iter;
510 int res, rc, i;
511 uint16_t entries;
512
513 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
514 &gid_list_dma, GFP_KERNEL);
515 if (!gid_list) {
516 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
517 "qla_target(%d): DMA Alloc failed of %u\n",
518 vha->vp_idx, qla2x00_gid_list_size(ha));
519 return -ENOMEM;
520 }
521
522 /* Get list of logged in devices */
523 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
524 if (rc != QLA_SUCCESS) {
525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
526 "qla_target(%d): get_id_list() failed: %x\n",
527 vha->vp_idx, rc);
528 res = -1;
529 goto out_free_id_list;
530 }
531
532 id_iter = (char *)gid_list;
533 res = -1;
534 for (i = 0; i < entries; i++) {
535 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
536 if ((gid->al_pa == s_id[2]) &&
537 (gid->area == s_id[1]) &&
538 (gid->domain == s_id[0])) {
539 *loop_id = le16_to_cpu(gid->loop_id);
540 res = 0;
541 break;
542 }
543 id_iter += ha->gid_list_info_size;
544 }
545
546out_free_id_list:
547 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
548 gid_list, gid_list_dma);
549 return res;
550}
551
2d70c103
NB		 552/* ha->hardware_lock supposed to be held on entry */
553static void qlt_undelete_sess(struct qla_tgt_sess *sess)
554{
555 BUG_ON(!sess->deleted);
556
557 list_del(&sess->del_list_entry);
558 sess->deleted = 0;
559}
560
561static void qlt_del_sess_work_fn(struct delayed_work *work)
562{
563 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
564 sess_del_work);
565 struct scsi_qla_host *vha = tgt->vha;
566 struct qla_hw_data *ha = vha->hw;
567 struct qla_tgt_sess *sess;
63832aab 568 unsigned long flags, elapsed;
2d70c103
NB		 569
570 spin_lock_irqsave(&ha->hardware_lock, flags);
571 while (!list_empty(&tgt->del_sess_list)) {
572 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
573 del_list_entry);
63832aab
SU		 574 elapsed = jiffies;
575 if (time_after_eq(elapsed, sess->expires)) {
2d70c103
NB		 576 qlt_undelete_sess(sess);
577
08234e3a
JE		 578 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
579 "Timeout: sess %p about to be deleted\n",
580 sess);
581 ha->tgt.tgt_ops->shutdown_sess(sess);
582 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 583 } else {
584 schedule_delayed_work(&tgt->sess_del_work,
63832aab 585 sess->expires - elapsed);
2d70c103
NB		 586 break;
587 }
588 }
589 spin_unlock_irqrestore(&ha->hardware_lock, flags);
590}
591
592/*
593 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
594 * Caller must put it.
595 */
596static struct qla_tgt_sess *qlt_create_sess(
597 struct scsi_qla_host *vha,
598 fc_port_t *fcport,
599 bool local)
600{
601 struct qla_hw_data *ha = vha->hw;
602 struct qla_tgt_sess *sess;
603 unsigned long flags;
604 unsigned char be_sid[3];
605
606 /* Check to avoid double sessions */
607 spin_lock_irqsave(&ha->hardware_lock, flags);
0e8cd71c 608 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
2d70c103
NB		 609 sess_list_entry) {
610 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
611 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
612 "Double sess %p found (s_id %x:%x:%x, "
613 "loop_id %d), updating to d_id %x:%x:%x, "
614 "loop_id %d", sess, sess->s_id.b.domain,
615 sess->s_id.b.al_pa, sess->s_id.b.area,
616 sess->loop_id, fcport->d_id.b.domain,
617 fcport->d_id.b.al_pa, fcport->d_id.b.area,
618 fcport->loop_id);
619
620 if (sess->deleted)
621 qlt_undelete_sess(sess);
622
623 kref_get(&sess->se_sess->sess_kref);
c8292d1d
RD		 624 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
625 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
626
2d70c103
NB		 627 if (sess->local && !local)
628 sess->local = 0;
629 spin_unlock_irqrestore(&ha->hardware_lock, flags);
630
631 return sess;
632 }
633 }
634 spin_unlock_irqrestore(&ha->hardware_lock, flags);
635
636 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
637 if (!sess) {
638 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
7b833558
OK		 639 "qla_target(%u): session allocation failed, all commands "
640 "from port %8phC will be refused", vha->vp_idx,
641 fcport->port_name);
2d70c103
NB		 642
643 return NULL;
644 }
0e8cd71c 645 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 646 sess->vha = vha;
647 sess->s_id = fcport->d_id;
648 sess->loop_id = fcport->loop_id;
649 sess->local = local;
650
651 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
652 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
0e8cd71c 653 sess, vha->vha_tgt.qla_tgt);
2d70c103
NB		 654
655 be_sid[0] = sess->s_id.b.domain;
656 be_sid[1] = sess->s_id.b.area;
657 be_sid[2] = sess->s_id.b.al_pa;
658 /*
659 * Determine if this fc_port->port_name is allowed to access
660 * target mode using explict NodeACLs+MappedLUNs, or using
661 * TPG demo mode. If this is successful a target mode FC nexus
662 * is created.
663 */
664 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
665 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
666 kfree(sess);
667 return NULL;
668 }
669 /*
670 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
671 * access across ->hardware_lock reaquire.
672 */
673 kref_get(&sess->se_sess->sess_kref);
674
c8292d1d 675 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
2d70c103
NB		 676 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
677 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
678
679 spin_lock_irqsave(&ha->hardware_lock, flags);
0e8cd71c
SK		 680 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
681 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103
NB		 682 spin_unlock_irqrestore(&ha->hardware_lock, flags);
683
684 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 685 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
686 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
687 vha->vp_idx, local ? "local " : "", fcport->port_name,
688 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
689 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 690
691 return sess;
692}
693
694/*
695 * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
696 */
697void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
698{
699 struct qla_hw_data *ha = vha->hw;
0e8cd71c 700 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 701 struct qla_tgt_sess *sess;
702 unsigned long flags;
703
704 if (!vha->hw->tgt.tgt_ops)
705 return;
706
707 if (!tgt || (fcport->port_type != FCT_INITIATOR))
708 return;
709
0e8cd71c
SK		 710 if (qla_ini_mode_enabled(vha))
711 return;
712
2d70c103
NB		 713 spin_lock_irqsave(&ha->hardware_lock, flags);
714 if (tgt->tgt_stop) {
715 spin_unlock_irqrestore(&ha->hardware_lock, flags);
716 return;
717 }
718 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
719 if (!sess) {
720 spin_unlock_irqrestore(&ha->hardware_lock, flags);
721
0e8cd71c 722 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 723 sess = qlt_create_sess(vha, fcport, false);
0e8cd71c 724 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 725
726 spin_lock_irqsave(&ha->hardware_lock, flags);
727 } else {
728 kref_get(&sess->se_sess->sess_kref);
729
730 if (sess->deleted) {
731 qlt_undelete_sess(sess);
732
733 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
7b833558
OK		 734 "qla_target(%u): %ssession for port %8phC "
735 "(loop ID %d) reappeared\n", vha->vp_idx,
736 sess->local ? "local " : "", sess->port_name,
2d70c103
NB		 737 sess->loop_id);
738
739 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
740 "Reappeared sess %p\n", sess);
741 }
c8292d1d
RD		 742 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
743 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
2d70c103
NB		 744 }
745
746 if (sess && sess->local) {
747 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
748 "qla_target(%u): local session for "
7b833558
OK		 749 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
750 fcport->port_name, sess->loop_id);
2d70c103
NB		 751 sess->local = 0;
752 }
2d70c103 753 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 754 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 755}
756
757void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
758{
759 struct qla_hw_data *ha = vha->hw;
0e8cd71c 760 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 761 struct qla_tgt_sess *sess;
762 unsigned long flags;
763
764 if (!vha->hw->tgt.tgt_ops)
765 return;
766
767 if (!tgt || (fcport->port_type != FCT_INITIATOR))
768 return;
769
770 spin_lock_irqsave(&ha->hardware_lock, flags);
771 if (tgt->tgt_stop) {
772 spin_unlock_irqrestore(&ha->hardware_lock, flags);
773 return;
774 }
775 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
776 if (!sess) {
777 spin_unlock_irqrestore(&ha->hardware_lock, flags);
778 return;
779 }
780
781 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
782
783 sess->local = 1;
784 qlt_schedule_sess_for_deletion(sess, false);
785 spin_unlock_irqrestore(&ha->hardware_lock, flags);
786}
787
788static inline int test_tgt_sess_count(struct qla_tgt *tgt)
789{
790 struct qla_hw_data *ha = tgt->ha;
791 unsigned long flags;
792 int res;
793 /*
794 * We need to protect against race, when tgt is freed before or
795 * inside wake_up()
796 */
797 spin_lock_irqsave(&ha->hardware_lock, flags);
798 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
799 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
800 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
801 res = (tgt->sess_count == 0);
802 spin_unlock_irqrestore(&ha->hardware_lock, flags);
803
804 return res;
805}
806
807/* Called by tcm_qla2xxx configfs code */
3c231bda 808int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 809{
810 struct scsi_qla_host *vha = tgt->vha;
811 struct qla_hw_data *ha = tgt->ha;
812 unsigned long flags;
813
3c231bda
NB		 814 mutex_lock(&qla_tgt_mutex);
815 if (!vha->fc_vport) {
816 struct Scsi_Host *sh = vha->host;
817 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
818 bool npiv_vports;
819
820 spin_lock_irqsave(sh->host_lock, flags);
821 npiv_vports = (fc_host->npiv_vports_inuse);
822 spin_unlock_irqrestore(sh->host_lock, flags);
823
824 if (npiv_vports) {
825 mutex_unlock(&qla_tgt_mutex);
826 return -EPERM;
827 }
828 }
2d70c103
NB		 829 if (tgt->tgt_stop || tgt->tgt_stopped) {
830 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
831 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 832 mutex_unlock(&qla_tgt_mutex);
833 return -EPERM;
2d70c103
NB		 834 }
835
836 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
837 vha->host_no, vha);
838 /*
839 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
840 * Lock is needed, because we still can get an incoming packet.
841 */
0e8cd71c 842 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 843 spin_lock_irqsave(&ha->hardware_lock, flags);
844 tgt->tgt_stop = 1;
845 qlt_clear_tgt_db(tgt, true);
846 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 847 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 848 mutex_unlock(&qla_tgt_mutex);
2d70c103 849
43829731 850 flush_delayed_work(&tgt->sess_del_work);
2d70c103
NB		 851
852 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
853 "Waiting for sess works (tgt %p)", tgt);
854 spin_lock_irqsave(&tgt->sess_work_lock, flags);
855 while (!list_empty(&tgt->sess_works_list)) {
856 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
857 flush_scheduled_work();
858 spin_lock_irqsave(&tgt->sess_work_lock, flags);
859 }
860 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
861
862 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
863 "Waiting for tgt %p: list_empty(sess_list)=%d "
864 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
865 tgt->sess_count);
866
867 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
868
869 /* Big hammer */
870 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
871 qlt_disable_vha(vha);
872
873 /* Wait for sessions to clear out (just in case) */
874 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 875 return 0;
2d70c103
NB		 876}
877EXPORT_SYMBOL(qlt_stop_phase1);
878
879/* Called by tcm_qla2xxx configfs code */
880void qlt_stop_phase2(struct qla_tgt *tgt)
881{
882 struct qla_hw_data *ha = tgt->ha;
0e8cd71c 883 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 884 unsigned long flags;
885
886 if (tgt->tgt_stopped) {
0e8cd71c 887 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 888 "Already in tgt->tgt_stopped state\n");
889 dump_stack();
890 return;
891 }
892
0e8cd71c 893 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
2d70c103
NB		 894 "Waiting for %d IRQ commands to complete (tgt %p)",
895 tgt->irq_cmd_count, tgt);
896
0e8cd71c 897 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 898 spin_lock_irqsave(&ha->hardware_lock, flags);
899 while (tgt->irq_cmd_count != 0) {
900 spin_unlock_irqrestore(&ha->hardware_lock, flags);
901 udelay(2);
902 spin_lock_irqsave(&ha->hardware_lock, flags);
903 }
904 tgt->tgt_stop = 0;
905 tgt->tgt_stopped = 1;
906 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 907 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 908
0e8cd71c 909 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
2d70c103
NB		 910 tgt);
911}
912EXPORT_SYMBOL(qlt_stop_phase2);
913
914/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 915static void qlt_release(struct qla_tgt *tgt)
2d70c103 916{
0e8cd71c 917 scsi_qla_host_t *vha = tgt->vha;
2d70c103 918
0e8cd71c 919 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 920 qlt_stop_phase2(tgt);
921
0e8cd71c 922 vha->vha_tgt.qla_tgt = NULL;
2d70c103 923
0e8cd71c 924 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 925 "Release of tgt %p finished\n", tgt);
926
927 kfree(tgt);
928}
929
930/* ha->hardware_lock supposed to be held on entry */
931static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
932 const void *param, unsigned int param_size)
933{
934 struct qla_tgt_sess_work_param *prm;
935 unsigned long flags;
936
937 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
938 if (!prm) {
939 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
940 "qla_target(%d): Unable to create session "
941 "work, command will be refused", 0);
942 return -ENOMEM;
943 }
944
945 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
946 "Scheduling work (type %d, prm %p)"
947 " to find session for param %p (size %d, tgt %p)\n",
948 type, prm, param, param_size, tgt);
949
950 prm->type = type;
951 memcpy(&prm->tm_iocb, param, param_size);
952
953 spin_lock_irqsave(&tgt->sess_work_lock, flags);
954 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
955 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
956
957 schedule_work(&tgt->sess_work);
958
959 return 0;
960}
961
962/*
963 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
964 */
965static void qlt_send_notify_ack(struct scsi_qla_host *vha,
966 struct imm_ntfy_from_isp *ntfy,
967 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
968 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
969{
970 struct qla_hw_data *ha = vha->hw;
971 request_t *pkt;
972 struct nack_to_isp *nack;
973
974 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
975
976 /* Send marker if required */
977 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
978 return;
979
980 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
981 if (!pkt) {
982 ql_dbg(ql_dbg_tgt, vha, 0xe049,
983 "qla_target(%d): %s failed: unable to allocate "
984 "request packet\n", vha->vp_idx, __func__);
985 return;
986 }
987
0e8cd71c
SK		 988 if (vha->vha_tgt.qla_tgt != NULL)
989 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 990
991 pkt->entry_type = NOTIFY_ACK_TYPE;
992 pkt->entry_count = 1;
993
994 nack = (struct nack_to_isp *)pkt;
995 nack->ox_id = ntfy->ox_id;
996
997 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
998 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
999 nack->u.isp24.flags = ntfy->u.isp24.flags &
1000 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
1001 }
1002 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1003 nack->u.isp24.status = ntfy->u.isp24.status;
1004 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1005 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1006 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1007 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1008 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1009 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1010 nack->u.isp24.srr_reject_code = srr_reject_code;
1011 nack->u.isp24.srr_reject_code_expl = srr_explan;
1012 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1013
1014 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1015 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1016 vha->vp_idx, nack->u.isp24.status);
1017
1018 qla2x00_start_iocbs(vha, vha->req);
1019}
1020
1021/*
1022 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1023 */
1024static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1025 struct abts_recv_from_24xx *abts, uint32_t status,
1026 bool ids_reversed)
1027{
1028 struct qla_hw_data *ha = vha->hw;
1029 struct abts_resp_to_24xx *resp;
1030 uint32_t f_ctl;
1031 uint8_t *p;
1032
1033 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1034 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1035 ha, abts, status);
1036
1037 /* Send marker if required */
1038 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1039 return;
1040
b6a029e1 1041 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1042 if (!resp) {
1043 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1044 "qla_target(%d): %s failed: unable to allocate "
1045 "request packet", vha->vp_idx, __func__);
1046 return;
1047 }
1048
1049 resp->entry_type = ABTS_RESP_24XX;
1050 resp->entry_count = 1;
1051 resp->nport_handle = abts->nport_handle;
1052 resp->vp_index = vha->vp_idx;
1053 resp->sof_type = abts->sof_type;
1054 resp->exchange_address = abts->exchange_address;
1055 resp->fcp_hdr_le = abts->fcp_hdr_le;
1056 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1057 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1058 F_CTL_SEQ_INITIATIVE);
1059 p = (uint8_t *)&f_ctl;
1060 resp->fcp_hdr_le.f_ctl[0] = *p++;
1061 resp->fcp_hdr_le.f_ctl[1] = *p++;
1062 resp->fcp_hdr_le.f_ctl[2] = *p;
1063 if (ids_reversed) {
1064 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1065 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1066 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1067 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1068 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1069 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1070 } else {
1071 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1072 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1073 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1074 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1075 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1076 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1077 }
1078 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1079 if (status == FCP_TMF_CMPL) {
1080 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1081 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1082 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1083 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1084 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1085 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1086 } else {
1087 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1088 resp->payload.ba_rjt.reason_code =
1089 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1090 /* Other bytes are zero */
1091 }
1092
0e8cd71c 1093 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103
NB		 1094
1095 qla2x00_start_iocbs(vha, vha->req);
1096}
1097
1098/*
1099 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1100 */
1101static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1102 struct abts_resp_from_24xx_fw *entry)
1103{
1104 struct ctio7_to_24xx *ctio;
1105
1106 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1107 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1108 /* Send marker if required */
1109 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1110 return;
1111
b6a029e1 1112 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1113 if (ctio == NULL) {
1114 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1115 "qla_target(%d): %s failed: unable to allocate "
1116 "request packet\n", vha->vp_idx, __func__);
1117 return;
1118 }
1119
1120 /*
1121 * We've got on entrance firmware's response on by us generated
1122 * ABTS response. So, in it ID fields are reversed.
1123 */
1124
1125 ctio->entry_type = CTIO_TYPE7;
1126 ctio->entry_count = 1;
1127 ctio->nport_handle = entry->nport_handle;
1128 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1129 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1130 ctio->vp_index = vha->vp_idx;
1131 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1132 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1133 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1134 ctio->exchange_addr = entry->exchange_addr_to_abort;
1135 ctio->u.status1.flags =
1136 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1137 CTIO7_FLAGS_TERMINATE);
33a5fcee 1138 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103
NB		 1139
1140 qla2x00_start_iocbs(vha, vha->req);
1141
1142 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1143 FCP_TMF_CMPL, true);
1144}
1145
1146/* ha->hardware_lock supposed to be held on entry */
1147static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1148 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1149{
1150 struct qla_hw_data *ha = vha->hw;
06e97b48 1151 struct se_session *se_sess = sess->se_sess;
2d70c103 1152 struct qla_tgt_mgmt_cmd *mcmd;
06e97b48
SH		 1153 struct se_cmd *se_cmd;
1154 u32 lun = 0;
2d70c103 1155 int rc;
06e97b48
SH		 1156 bool found_lun = false;
1157
1158 spin_lock(&se_sess->sess_cmd_lock);
1159 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1160 struct qla_tgt_cmd *cmd =
1161 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1162 if (cmd->tag == abts->exchange_addr_to_abort) {
1163 lun = cmd->unpacked_lun;
1164 found_lun = true;
1165 break;
1166 }
1167 }
1168 spin_unlock(&se_sess->sess_cmd_lock);
1169
1170 if (!found_lun)
1171 return -ENOENT;
2d70c103
NB		 1172
1173 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1174 "qla_target(%d): task abort (tag=%d)\n",
1175 vha->vp_idx, abts->exchange_addr_to_abort);
1176
1177 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1178 if (mcmd == NULL) {
1179 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1180 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1181 vha->vp_idx, __func__);
1182 return -ENOMEM;
1183 }
1184 memset(mcmd, 0, sizeof(*mcmd));
1185
1186 mcmd->sess = sess;
1187 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
80187f8e 1188 mcmd->reset_count = vha->hw->chip_reset;
2d70c103 1189
06e97b48 1190 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
2d70c103
NB		 1191 abts->exchange_addr_to_abort);
1192 if (rc != 0) {
1193 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1194 "qla_target(%d): tgt_ops->handle_tmr()"
1195 " failed: %d", vha->vp_idx, rc);
1196 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1197 return -EFAULT;
1198 }
1199
1200 return 0;
1201}
1202
1203/*
1204 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1205 */
1206static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1207 struct abts_recv_from_24xx *abts)
1208{
1209 struct qla_hw_data *ha = vha->hw;
1210 struct qla_tgt_sess *sess;
1211 uint32_t tag = abts->exchange_addr_to_abort;
1212 uint8_t s_id[3];
1213 int rc;
1214
1215 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1216 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1217 "qla_target(%d): ABTS: Abort Sequence not "
1218 "supported\n", vha->vp_idx);
1219 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1220 return;
1221 }
1222
1223 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1224 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1225 "qla_target(%d): ABTS: Unknown Exchange "
1226 "Address received\n", vha->vp_idx);
1227 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1228 return;
1229 }
1230
1231 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1232 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1233 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1234 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1235 le32_to_cpu(abts->fcp_hdr_le.parameter));
1236
1237 s_id[0] = abts->fcp_hdr_le.s_id[2];
1238 s_id[1] = abts->fcp_hdr_le.s_id[1];
1239 s_id[2] = abts->fcp_hdr_le.s_id[0];
1240
1241 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1242 if (!sess) {
1243 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1244 "qla_target(%d): task abort for non-existant session\n",
1245 vha->vp_idx);
0e8cd71c 1246 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 1247 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1248 if (rc != 0) {
1249 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1250 false);
1251 }
1252 return;
1253 }
1254
1255 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1256 if (rc != 0) {
1257 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1258 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1259 vha->vp_idx, rc);
1260 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1261 return;
1262 }
1263}
1264
1265/*
1266 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1267 */
1268static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1269 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1270{
1271 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1272 struct ctio7_to_24xx *ctio;
33a5fcee 1273 uint16_t temp;
2d70c103
NB		 1274
1275 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1276 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1277 ha, atio, resp_code);
1278
1279 /* Send marker if required */
1280 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1281 return;
1282
1283 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1284 if (ctio == NULL) {
1285 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1286 "qla_target(%d): %s failed: unable to allocate "
1287 "request packet\n", ha->vp_idx, __func__);
1288 return;
1289 }
1290
1291 ctio->entry_type = CTIO_TYPE7;
1292 ctio->entry_count = 1;
1293 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1294 ctio->nport_handle = mcmd->sess->loop_id;
1295 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1296 ctio->vp_index = ha->vp_idx;
1297 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1298 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1299 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1300 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1301 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1302 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1303 CTIO7_FLAGS_SEND_STATUS);
33a5fcee
QT		 1304 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1305 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 1306 ctio->u.status1.scsi_status =
1307 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1308 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
e4b11b89 1309 ctio->u.status1.sense_data[0] = resp_code;
2d70c103
NB		 1310
1311 qla2x00_start_iocbs(ha, ha->req);
1312}
1313
1314void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1315{
1316 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1317}
1318EXPORT_SYMBOL(qlt_free_mcmd);
1319
1320/* callback from target fabric module code */
1321void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1322{
1323 struct scsi_qla_host *vha = mcmd->sess->vha;
1324 struct qla_hw_data *ha = vha->hw;
1325 unsigned long flags;
1326
1327 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1328 "TM response mcmd (%p) status %#x state %#x",
1329 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1330
1331 spin_lock_irqsave(&ha->hardware_lock, flags);
b6a029e1
AE		 1332
1333 if (qla2x00_reset_active(vha) || mcmd->reset_count != ha->chip_reset) {
1334 /*
1335 * Either a chip reset is active or this request was from
1336 * previous life, just abort the processing.
1337 */
1338 ql_dbg(ql_dbg_async, vha, 0xe100,
1339 "RESET-TMR active/old-count/new-count = %d/%d/%d.\n",
1340 qla2x00_reset_active(vha), mcmd->reset_count,
1341 ha->chip_reset);
1342 ha->tgt.tgt_ops->free_mcmd(mcmd);
1343 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1344 return;
1345 }
1346
2d70c103
NB		 1347 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1348 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1349 0, 0, 0, 0, 0, 0);
1350 else {
1351 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1352 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1353 mcmd->fc_tm_rsp, false);
1354 else
1355 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1356 mcmd->fc_tm_rsp);
1357 }
1358 /*
1359 * Make the callback for ->free_mcmd() to queue_work() and invoke
1360 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1361 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1362 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1363 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1364 * qlt_xmit_tm_rsp() returns here..
1365 */
1366 ha->tgt.tgt_ops->free_mcmd(mcmd);
1367 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1368}
1369EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1370
1371/* No locks */
1372static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1373{
1374 struct qla_tgt_cmd *cmd = prm->cmd;
1375
1376 BUG_ON(cmd->sg_cnt == 0);
1377
1378 prm->sg = (struct scatterlist *)cmd->sg;
1379 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1380 cmd->sg_cnt, cmd->dma_data_direction);
1381 if (unlikely(prm->seg_cnt == 0))
1382 goto out_err;
1383
1384 prm->cmd->sg_mapped = 1;
1385
f83adb61
QT		 1386 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1387 /*
1388 * If greater than four sg entries then we need to allocate
1389 * the continuation entries
1390 */
1391 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1392 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1393 prm->tgt->datasegs_per_cmd,
1394 prm->tgt->datasegs_per_cont);
1395 } else {
1396 /* DIF */
1397 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1398 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1399 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1400 prm->tot_dsds = prm->seg_cnt;
1401 } else
1402 prm->tot_dsds = prm->seg_cnt;
1403
1404 if (cmd->prot_sg_cnt) {
1405 prm->prot_sg = cmd->prot_sg;
1406 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1407 cmd->prot_sg, cmd->prot_sg_cnt,
1408 cmd->dma_data_direction);
1409 if (unlikely(prm->prot_seg_cnt == 0))
1410 goto out_err;
1411
1412 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1413 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1414 /* Dif Bundling not support here */
1415 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1416 cmd->blk_sz);
1417 prm->tot_dsds += prm->prot_seg_cnt;
1418 } else
1419 prm->tot_dsds += prm->prot_seg_cnt;
1420 }
1421 }
2d70c103 1422
2d70c103
NB		 1423 return 0;
1424
1425out_err:
1426 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1427 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1428 0, prm->cmd->sg_cnt);
1429 return -1;
1430}
1431
1432static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
1433 struct qla_tgt_cmd *cmd)
1434{
1435 struct qla_hw_data *ha = vha->hw;
1436
1437 BUG_ON(!cmd->sg_mapped);
1438 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1439 cmd->sg_mapped = 0;
f83adb61
QT		 1440
1441 if (cmd->prot_sg_cnt)
1442 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1443 cmd->dma_data_direction);
1444
1445 if (cmd->ctx_dsd_alloced)
1446 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1447
1448 if (cmd->ctx)
1449 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 1450}
1451
1452static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1453 uint32_t req_cnt)
1454{
d29fb736 1455 uint32_t cnt, cnt_in;
2d70c103
NB		 1456
1457 if (vha->req->cnt < (req_cnt + 2)) {
75554b68 1458 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
d29fb736 1459 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
2d70c103 1460
2d70c103
NB		 1461 if (vha->req->ring_index < cnt)
1462 vha->req->cnt = cnt - vha->req->ring_index;
1463 else
1464 vha->req->cnt = vha->req->length -
1465 (vha->req->ring_index - cnt);
1466 }
1467
1468 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
667024a3 1469 ql_dbg(ql_dbg_io, vha, 0x305a,
d29fb736
SK		 1470 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n",
1471 vha->vp_idx, vha->req->ring_index,
1472 vha->req->cnt, req_cnt, cnt, cnt_in, vha->req->length);
2d70c103
NB		 1473 return -EAGAIN;
1474 }
1475 vha->req->cnt -= req_cnt;
1476
1477 return 0;
1478}
1479
1480/*
1481 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1482 */
1483static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1484{
1485 /* Adjust ring index. */
1486 vha->req->ring_index++;
1487 if (vha->req->ring_index == vha->req->length) {
1488 vha->req->ring_index = 0;
1489 vha->req->ring_ptr = vha->req->ring;
1490 } else {
1491 vha->req->ring_ptr++;
1492 }
1493 return (cont_entry_t *)vha->req->ring_ptr;
1494}
1495
1496/* ha->hardware_lock supposed to be held on entry */
1497static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1498{
1499 struct qla_hw_data *ha = vha->hw;
1500 uint32_t h;
1501
1502 h = ha->tgt.current_handle;
1503 /* always increment cmd handle */
1504 do {
1505 ++h;
8d93f550 1506 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 1507 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1508 if (h == ha->tgt.current_handle) {
667024a3 1509 ql_dbg(ql_dbg_io, vha, 0x305b,
2d70c103
NB		 1510 "qla_target(%d): Ran out of "
1511 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1512 h = QLA_TGT_NULL_HANDLE;
1513 break;
1514 }
1515 } while ((h == QLA_TGT_NULL_HANDLE) ||
1516 (h == QLA_TGT_SKIP_HANDLE) ||
1517 (ha->tgt.cmds[h-1] != NULL));
1518
1519 if (h != QLA_TGT_NULL_HANDLE)
1520 ha->tgt.current_handle = h;
1521
1522 return h;
1523}
1524
1525/* ha->hardware_lock supposed to be held on entry */
1526static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1527 struct scsi_qla_host *vha)
1528{
1529 uint32_t h;
1530 struct ctio7_to_24xx *pkt;
1531 struct qla_hw_data *ha = vha->hw;
1532 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 1533 uint16_t temp;
2d70c103
NB		 1534
1535 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1536 prm->pkt = pkt;
1537 memset(pkt, 0, sizeof(*pkt));
1538
1539 pkt->entry_type = CTIO_TYPE7;
1540 pkt->entry_count = (uint8_t)prm->req_cnt;
1541 pkt->vp_index = vha->vp_idx;
1542
1543 h = qlt_make_handle(vha);
1544 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1545 /*
1546 * CTIO type 7 from the firmware doesn't provide a way to
1547 * know the initiator's LOOP ID, hence we can't find
1548 * the session and, so, the command.
1549 */
1550 return -EAGAIN;
1551 } else
1552 ha->tgt.cmds[h-1] = prm->cmd;
1553
1554 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1555 pkt->nport_handle = prm->cmd->loop_id;
1556 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1557 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1558 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1559 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1560 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1561 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
33a5fcee
QT		 1562 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1563 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 1564 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1565
2d70c103
NB		 1566 return 0;
1567}
1568
1569/*
1570 * ha->hardware_lock supposed to be held on entry. We have already made sure
1571 * that there is sufficient amount of request entries to not drop it.
1572 */
1573static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1574 struct scsi_qla_host *vha)
1575{
1576 int cnt;
1577 uint32_t *dword_ptr;
1578 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1579
1580 /* Build continuation packets */
1581 while (prm->seg_cnt > 0) {
1582 cont_a64_entry_t *cont_pkt64 =
1583 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1584
1585 /*
1586 * Make sure that from cont_pkt64 none of
1587 * 64-bit specific fields used for 32-bit
1588 * addressing. Cast to (cont_entry_t *) for
1589 * that.
1590 */
1591
1592 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1593
1594 cont_pkt64->entry_count = 1;
1595 cont_pkt64->sys_define = 0;
1596
1597 if (enable_64bit_addressing) {
1598 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1599 dword_ptr =
1600 (uint32_t *)&cont_pkt64->dseg_0_address;
1601 } else {
1602 cont_pkt64->entry_type = CONTINUE_TYPE;
1603 dword_ptr =
1604 (uint32_t *)&((cont_entry_t *)
1605 cont_pkt64)->dseg_0_address;
1606 }
1607
1608 /* Load continuation entry data segments */
1609 for (cnt = 0;
1610 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1611 cnt++, prm->seg_cnt--) {
1612 *dword_ptr++ =
1613 cpu_to_le32(pci_dma_lo32
1614 (sg_dma_address(prm->sg)));
1615 if (enable_64bit_addressing) {
1616 *dword_ptr++ =
1617 cpu_to_le32(pci_dma_hi32
1618 (sg_dma_address
1619 (prm->sg)));
1620 }
1621 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1622
2d70c103
NB		 1623 prm->sg = sg_next(prm->sg);
1624 }
1625 }
1626}
1627
1628/*
1629 * ha->hardware_lock supposed to be held on entry. We have already made sure
1630 * that there is sufficient amount of request entries to not drop it.
1631 */
1632static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1633 struct scsi_qla_host *vha)
1634{
1635 int cnt;
1636 uint32_t *dword_ptr;
1637 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1638 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1639
2d70c103
NB		 1640 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1641
1642 /* Setup packet address segment pointer */
1643 dword_ptr = pkt24->u.status0.dseg_0_address;
1644
1645 /* Set total data segment count */
1646 if (prm->seg_cnt)
1647 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1648
1649 if (prm->seg_cnt == 0) {
1650 /* No data transfer */
1651 *dword_ptr++ = 0;
1652 *dword_ptr = 0;
1653 return;
1654 }
1655
1656 /* If scatter gather */
2d70c103
NB		 1657
1658 /* Load command entry data segments */
1659 for (cnt = 0;
1660 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1661 cnt++, prm->seg_cnt--) {
1662 *dword_ptr++ =
1663 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1664 if (enable_64bit_addressing) {
1665 *dword_ptr++ =
1666 cpu_to_le32(pci_dma_hi32(
1667 sg_dma_address(prm->sg)));
1668 }
1669 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1670
2d70c103
NB		 1671 prm->sg = sg_next(prm->sg);
1672 }
1673
1674 qlt_load_cont_data_segments(prm, vha);
1675}
1676
1677static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1678{
1679 return cmd->bufflen > 0;
1680}
1681
1682/*
1683 * Called without ha->hardware_lock held
1684 */
1685static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1686 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1687 uint32_t *full_req_cnt)
1688{
1689 struct qla_tgt *tgt = cmd->tgt;
1690 struct scsi_qla_host *vha = tgt->vha;
1691 struct qla_hw_data *ha = vha->hw;
1692 struct se_cmd *se_cmd = &cmd->se_cmd;
1693
1694 if (unlikely(cmd->aborted)) {
1695 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1696 "qla_target(%d): terminating exchange "
1697 "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
1698 se_cmd, cmd->tag);
1699
1700 cmd->state = QLA_TGT_STATE_ABORTED;
1701
1702 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1703
1704 /* !! At this point cmd could be already freed !! */
1705 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1706 }
1707
2d70c103
NB		 1708 prm->cmd = cmd;
1709 prm->tgt = tgt;
1710 prm->rq_result = scsi_status;
1711 prm->sense_buffer = &cmd->sense_buffer[0];
1712 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1713 prm->sg = NULL;
1714 prm->seg_cnt = -1;
1715 prm->req_cnt = 1;
1716 prm->add_status_pkt = 0;
1717
2d70c103
NB		 1718 /* Send marker if required */
1719 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1720 return -EFAULT;
1721
2d70c103
NB		 1722 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1723 if (qlt_pci_map_calc_cnt(prm) != 0)
1724 return -EAGAIN;
1725 }
1726
1727 *full_req_cnt = prm->req_cnt;
1728
1729 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1730 prm->residual = se_cmd->residual_count;
667024a3 1731 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
2d70c103
NB		 1732 "Residual underflow: %d (tag %d, "
1733 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1734 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1735 cmd->bufflen, prm->rq_result);
1736 prm->rq_result |= SS_RESIDUAL_UNDER;
1737 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1738 prm->residual = se_cmd->residual_count;
667024a3 1739 ql_dbg(ql_dbg_io, vha, 0x305d,
2d70c103
NB		 1740 "Residual overflow: %d (tag %d, "
1741 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1742 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1743 cmd->bufflen, prm->rq_result);
1744 prm->rq_result |= SS_RESIDUAL_OVER;
1745 }
1746
1747 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1748 /*
1749 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1750 * ignored in *xmit_response() below
1751 */
1752 if (qlt_has_data(cmd)) {
1753 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1754 (IS_FWI2_CAPABLE(ha) &&
1755 (prm->rq_result != 0))) {
1756 prm->add_status_pkt = 1;
1757 (*full_req_cnt)++;
1758 }
1759 }
1760 }
1761
2d70c103
NB		 1762 return 0;
1763}
1764
1765static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1766 struct qla_tgt_cmd *cmd, int sending_sense)
1767{
1768 if (ha->tgt.enable_class_2)
1769 return 0;
1770
1771 if (sending_sense)
1772 return cmd->conf_compl_supported;
1773 else
1774 return ha->tgt.enable_explicit_conf &&
1775 cmd->conf_compl_supported;
1776}
1777
1778#ifdef CONFIG_QLA_TGT_DEBUG_SRR
1779/*
1780 * Original taken from the XFS code
1781 */
1782static unsigned long qlt_srr_random(void)
1783{
1784 static int Inited;
1785 static unsigned long RandomValue;
1786 static DEFINE_SPINLOCK(lock);
1787 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1788 register long rv;
1789 register long lo;
1790 register long hi;
1791 unsigned long flags;
1792
1793 spin_lock_irqsave(&lock, flags);
1794 if (!Inited) {
1795 RandomValue = jiffies;
1796 Inited = 1;
1797 }
1798 rv = RandomValue;
1799 hi = rv / 127773;
1800 lo = rv % 127773;
1801 rv = 16807 * lo - 2836 * hi;
1802 if (rv <= 0)
1803 rv += 2147483647;
1804 RandomValue = rv;
1805 spin_unlock_irqrestore(&lock, flags);
1806 return rv;
1807}
1808
1809static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1810{
1811#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1812 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1813 == 50) {
1814 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1815 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1816 "Dropping cmd %p (tag %d) status", cmd, cmd->tag);
1817 }
1818#endif
1819 /*
1820 * It's currently not possible to simulate SRRs for FCP_WRITE without
1821 * a physical link layer failure, so don't even try here..
1822 */
1823 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1824 return;
1825
1826 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1827 ((qlt_srr_random() % 100) == 20)) {
1828 int i, leave = 0;
1829 unsigned int tot_len = 0;
1830
1831 while (leave == 0)
1832 leave = qlt_srr_random() % cmd->sg_cnt;
1833
1834 for (i = 0; i < leave; i++)
1835 tot_len += cmd->sg[i].length;
1836
1837 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1838 "Cutting cmd %p (tag %d) buffer"
1839 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1840 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
1841 cmd->bufflen, cmd->sg_cnt);
1842
1843 cmd->bufflen = tot_len;
1844 cmd->sg_cnt = leave;
1845 }
1846
1847 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1848 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1849
1850 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1851 "Cutting cmd %p (tag %d) buffer head "
1852 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
1853 cmd->bufflen);
1854 if (offset == 0)
1855 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1856 else if (qlt_set_data_offset(cmd, offset)) {
1857 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1858 "qlt_set_data_offset() failed (tag %d)", cmd->tag);
1859 }
1860 }
1861}
1862#else
1863static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1864{}
1865#endif
1866
1867static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1868 struct qla_tgt_prm *prm)
1869{
1870 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1871 (uint32_t)sizeof(ctio->u.status1.sense_data));
1872 ctio->u.status0.flags |=
1873 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1874 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1875 ctio->u.status0.flags |= __constant_cpu_to_le16(
1876 CTIO7_FLAGS_EXPLICIT_CONFORM |
1877 CTIO7_FLAGS_CONFORM_REQ);
1878 }
1879 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1880 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1881 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1882 int i;
1883
1884 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1885 if (prm->cmd->se_cmd.scsi_status != 0) {
1886 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1887 "Skipping EXPLICIT_CONFORM and "
1888 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1889 "non GOOD status\n");
1890 goto skip_explict_conf;
1891 }
1892 ctio->u.status1.flags |= __constant_cpu_to_le16(
1893 CTIO7_FLAGS_EXPLICIT_CONFORM |
1894 CTIO7_FLAGS_CONFORM_REQ);
1895 }
1896skip_explict_conf:
1897 ctio->u.status1.flags &=
1898 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1899 ctio->u.status1.flags |=
1900 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1901 ctio->u.status1.scsi_status |=
1902 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1903 ctio->u.status1.sense_length =
1904 cpu_to_le16(prm->sense_buffer_len);
1905 for (i = 0; i < prm->sense_buffer_len/4; i++)
1906 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1907 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1908#if 0
1909 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
1910 static int q;
1911 if (q < 10) {
1912 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
1913 "qla_target(%d): %d bytes of sense "
1914 "lost", prm->tgt->ha->vp_idx,
1915 prm->sense_buffer_len % 4);
1916 q++;
1917 }
1918 }
1919#endif
1920 } else {
1921 ctio->u.status1.flags &=
1922 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1923 ctio->u.status1.flags |=
1924 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1925 ctio->u.status1.sense_length = 0;
1926 memset(ctio->u.status1.sense_data, 0,
1927 sizeof(ctio->u.status1.sense_data));
1928 }
1929
1930 /* Sense with len > 24, is it possible ??? */
1931}
1932
f83adb61
QT		 1933
1934
1935/* diff */
1936static inline int
1937qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
1938{
1939 /*
1940 * Uncomment when corresponding SCSI changes are done.
1941 *
1942 if (!sp->cmd->prot_chk)
1943 return 0;
1944 *
1945 */
1946 switch (se_cmd->prot_op) {
1947 case TARGET_PROT_DOUT_INSERT:
1948 case TARGET_PROT_DIN_STRIP:
1949 if (ql2xenablehba_err_chk >= 1)
1950 return 1;
1951 break;
1952 case TARGET_PROT_DOUT_PASS:
1953 case TARGET_PROT_DIN_PASS:
1954 if (ql2xenablehba_err_chk >= 2)
1955 return 1;
1956 break;
1957 case TARGET_PROT_DIN_INSERT:
1958 case TARGET_PROT_DOUT_STRIP:
1959 return 1;
1960 default:
1961 break;
1962 }
1963 return 0;
1964}
1965
1966/*
1967 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
1968 *
1969 */
1970static inline void
1971qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
1972{
1973 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
1974
1975 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
1976 * have been immplemented by TCM, before AppTag is avail.
1977 * Look for modesense_handlers[]
1978 */
c7ee3bd4 1979 ctx->app_tag = 0;
f83adb61
QT		 1980 ctx->app_tag_mask[0] = 0x0;
1981 ctx->app_tag_mask[1] = 0x0;
1982
1983 switch (se_cmd->prot_type) {
1984 case TARGET_DIF_TYPE0_PROT:
1985 /*
1986 * No check for ql2xenablehba_err_chk, as it would be an
1987 * I/O error if hba tag generation is not done.
1988 */
1989 ctx->ref_tag = cpu_to_le32(lba);
1990
1991 if (!qlt_hba_err_chk_enabled(se_cmd))
1992 break;
1993
1994 /* enable ALL bytes of the ref tag */
1995 ctx->ref_tag_mask[0] = 0xff;
1996 ctx->ref_tag_mask[1] = 0xff;
1997 ctx->ref_tag_mask[2] = 0xff;
1998 ctx->ref_tag_mask[3] = 0xff;
1999 break;
2000 /*
2001 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2002 * 16 bit app tag.
2003 */
2004 case TARGET_DIF_TYPE1_PROT:
2005 ctx->ref_tag = cpu_to_le32(lba);
2006
2007 if (!qlt_hba_err_chk_enabled(se_cmd))
2008 break;
2009
2010 /* enable ALL bytes of the ref tag */
2011 ctx->ref_tag_mask[0] = 0xff;
2012 ctx->ref_tag_mask[1] = 0xff;
2013 ctx->ref_tag_mask[2] = 0xff;
2014 ctx->ref_tag_mask[3] = 0xff;
2015 break;
2016 /*
2017 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2018 * match LBA in CDB + N
2019 */
2020 case TARGET_DIF_TYPE2_PROT:
2021 ctx->ref_tag = cpu_to_le32(lba);
2022
2023 if (!qlt_hba_err_chk_enabled(se_cmd))
2024 break;
2025
2026 /* enable ALL bytes of the ref tag */
2027 ctx->ref_tag_mask[0] = 0xff;
2028 ctx->ref_tag_mask[1] = 0xff;
2029 ctx->ref_tag_mask[2] = 0xff;
2030 ctx->ref_tag_mask[3] = 0xff;
2031 break;
2032
2033 /* For Type 3 protection: 16 bit GUARD only */
2034 case TARGET_DIF_TYPE3_PROT:
2035 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2036 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2037 break;
2038 }
2039}
2040
2041
2042static inline int
2043qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2044{
2045 uint32_t *cur_dsd;
2046 int sgc;
2047 uint32_t transfer_length = 0;
2048 uint32_t data_bytes;
2049 uint32_t dif_bytes;
2050 uint8_t bundling = 1;
2051 uint8_t *clr_ptr;
2052 struct crc_context *crc_ctx_pkt = NULL;
2053 struct qla_hw_data *ha;
2054 struct ctio_crc2_to_fw *pkt;
2055 dma_addr_t crc_ctx_dma;
2056 uint16_t fw_prot_opts = 0;
2057 struct qla_tgt_cmd *cmd = prm->cmd;
2058 struct se_cmd *se_cmd = &cmd->se_cmd;
2059 uint32_t h;
2060 struct atio_from_isp *atio = &prm->cmd->atio;
c7ee3bd4 2061 uint16_t t16;
f83adb61
QT		 2062
2063 sgc = 0;
2064 ha = vha->hw;
2065
2066 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2067 prm->pkt = pkt;
2068 memset(pkt, 0, sizeof(*pkt));
2069
2070 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2071 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2072 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2073 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2074
2075 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2076 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2077 bundling = 0;
2078
2079 /* Compute dif len and adjust data len to incude protection */
2080 data_bytes = cmd->bufflen;
2081 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2082
2083 switch (se_cmd->prot_op) {
2084 case TARGET_PROT_DIN_INSERT:
2085 case TARGET_PROT_DOUT_STRIP:
2086 transfer_length = data_bytes;
2087 data_bytes += dif_bytes;
2088 break;
2089
2090 case TARGET_PROT_DIN_STRIP:
2091 case TARGET_PROT_DOUT_INSERT:
2092 case TARGET_PROT_DIN_PASS:
2093 case TARGET_PROT_DOUT_PASS:
2094 transfer_length = data_bytes + dif_bytes;
2095 break;
2096
2097 default:
2098 BUG();
2099 break;
2100 }
2101
2102 if (!qlt_hba_err_chk_enabled(se_cmd))
2103 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2104 /* HBA error checking enabled */
2105 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2106 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2107 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2108 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2109 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2110 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2111 }
2112
2113 switch (se_cmd->prot_op) {
2114 case TARGET_PROT_DIN_INSERT:
2115 case TARGET_PROT_DOUT_INSERT:
2116 fw_prot_opts |= PO_MODE_DIF_INSERT;
2117 break;
2118 case TARGET_PROT_DIN_STRIP:
2119 case TARGET_PROT_DOUT_STRIP:
2120 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2121 break;
2122 case TARGET_PROT_DIN_PASS:
2123 case TARGET_PROT_DOUT_PASS:
2124 fw_prot_opts |= PO_MODE_DIF_PASS;
2125 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2126 break;
2127 default:/* Normal Request */
2128 fw_prot_opts |= PO_MODE_DIF_PASS;
2129 break;
2130 }
2131
2132
2133 /* ---- PKT ---- */
2134 /* Update entry type to indicate Command Type CRC_2 IOCB */
2135 pkt->entry_type = CTIO_CRC2;
2136 pkt->entry_count = 1;
2137 pkt->vp_index = vha->vp_idx;
2138
2139 h = qlt_make_handle(vha);
2140 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2141 /*
2142 * CTIO type 7 from the firmware doesn't provide a way to
2143 * know the initiator's LOOP ID, hence we can't find
2144 * the session and, so, the command.
2145 */
2146 return -EAGAIN;
2147 } else
2148 ha->tgt.cmds[h-1] = prm->cmd;
2149
2150
2151 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2152 pkt->nport_handle = prm->cmd->loop_id;
2153 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2154 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2155 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2156 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2157 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2158
2159 /* silence compile warning */
2160 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2161 pkt->ox_id = cpu_to_le16(t16);
2162
2163 t16 = (atio->u.isp24.attr << 9);
2164 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2165 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2166
2167 /* Set transfer direction */
2168 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2169 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2170 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2171 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2172
2173
2174 pkt->dseg_count = prm->tot_dsds;
2175 /* Fibre channel byte count */
2176 pkt->transfer_length = cpu_to_le32(transfer_length);
2177
2178
2179 /* ----- CRC context -------- */
2180
2181 /* Allocate CRC context from global pool */
2182 crc_ctx_pkt = cmd->ctx =
2183 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2184
2185 if (!crc_ctx_pkt)
2186 goto crc_queuing_error;
2187
2188 /* Zero out CTX area. */
2189 clr_ptr = (uint8_t *)crc_ctx_pkt;
2190 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2191
2192 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2193 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2194
2195 /* Set handle */
2196 crc_ctx_pkt->handle = pkt->handle;
2197
2198 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2199
2200 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2201 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2202 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2203
2204
2205 if (!bundling) {
2206 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2207 } else {
2208 /*
2209 * Configure Bundling if we need to fetch interlaving
2210 * protection PCI accesses
2211 */
2212 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2213 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2214 crc_ctx_pkt->u.bundling.dseg_count =
2215 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2216 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2217 }
2218
2219 /* Finish the common fields of CRC pkt */
2220 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2221 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2222 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
2223 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0);
2224
2225
2226 /* Walks data segments */
2227 pkt->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
2228
2229 if (!bundling && prm->prot_seg_cnt) {
2230 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2231 prm->tot_dsds, cmd))
2232 goto crc_queuing_error;
2233 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2234 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2235 goto crc_queuing_error;
2236
2237 if (bundling && prm->prot_seg_cnt) {
2238 /* Walks dif segments */
c7ee3bd4 2239 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2240
2241 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2242 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2243 prm->prot_seg_cnt, cmd))
2244 goto crc_queuing_error;
2245 }
2246 return QLA_SUCCESS;
2247
2248crc_queuing_error:
2249 /* Cleanup will be performed by the caller */
2250
2251 return QLA_FUNCTION_FAILED;
2252}
2253
2254
2d70c103
NB		 2255/*
2256 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2257 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2258 */
2259int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2260 uint8_t scsi_status)
2261{
2262 struct scsi_qla_host *vha = cmd->vha;
2263 struct qla_hw_data *ha = vha->hw;
2264 struct ctio7_to_24xx *pkt;
2265 struct qla_tgt_prm prm;
2266 uint32_t full_req_cnt = 0;
2267 unsigned long flags = 0;
2268 int res;
2269
2270 memset(&prm, 0, sizeof(prm));
2271 qlt_check_srr_debug(cmd, &xmit_type);
2272
2273 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 2274 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2275 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2276 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2277 &cmd->se_cmd);
2d70c103
NB		 2278
2279 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2280 &full_req_cnt);
2281 if (unlikely(res != 0)) {
2282 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
2283 return 0;
2284
2285 return res;
2286 }
2287
2288 spin_lock_irqsave(&ha->hardware_lock, flags);
2289
b6a029e1
AE		 2290 if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
2291 /*
2292 * Either a chip reset is active or this request was from
2293 * previous life, just abort the processing.
2294 */
2295 cmd->state = QLA_TGT_STATE_PROCESSED;
2296 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2297 ql_dbg(ql_dbg_async, vha, 0xe101,
2298 "RESET-RSP active/old-count/new-count = %d/%d/%d.\n",
2299 qla2x00_reset_active(vha), cmd->reset_count,
2300 ha->chip_reset);
2301 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2302 return 0;
2303 }
2304
2d70c103
NB		 2305 /* Does F/W have an IOCBs for this request */
2306 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2307 if (unlikely(res))
2308 goto out_unmap_unlock;
2309
f83adb61
QT		 2310 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2311 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2312 else
2313 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103
NB		 2314 if (unlikely(res != 0))
2315 goto out_unmap_unlock;
2316
2317
2318 pkt = (struct ctio7_to_24xx *)prm.pkt;
2319
2320 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2321 pkt->u.status0.flags |=
2322 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2323 CTIO7_FLAGS_STATUS_MODE_0);
2324
f83adb61
QT		 2325 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2326 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2327
2328 if (prm.add_status_pkt == 0) {
2329 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2330 pkt->u.status0.scsi_status =
2331 cpu_to_le16(prm.rq_result);
2332 pkt->u.status0.residual =
2333 cpu_to_le32(prm.residual);
2334 pkt->u.status0.flags |= __constant_cpu_to_le16(
2335 CTIO7_FLAGS_SEND_STATUS);
2336 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2337 pkt->u.status0.flags |=
2338 __constant_cpu_to_le16(
2339 CTIO7_FLAGS_EXPLICIT_CONFORM |
2340 CTIO7_FLAGS_CONFORM_REQ);
2341 }
2342 }
2343
2344 } else {
2345 /*
2346 * We have already made sure that there is sufficient
2347 * amount of request entries to not drop HW lock in
2348 * req_pkt().
2349 */
2350 struct ctio7_to_24xx *ctio =
2351 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2352
667024a3
AE		 2353 ql_dbg(ql_dbg_io, vha, 0x305e,
2354 "Building additional status packet 0x%p.\n",
2355 ctio);
2d70c103 2356
f83adb61
QT		 2357 /*
2358 * T10Dif: ctio_crc2_to_fw overlay ontop of
2359 * ctio7_to_24xx
2360 */
2d70c103 2361 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 2362 /* reset back to CTIO7 */
2d70c103 2363 ctio->entry_count = 1;
f83adb61 2364 ctio->entry_type = CTIO_TYPE7;
2d70c103
NB		 2365 ctio->dseg_count = 0;
2366 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
2367 CTIO7_FLAGS_DATA_IN);
2368
2369 /* Real finish is ctio_m1's finish */
2370 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
2371 pkt->u.status0.flags |= __constant_cpu_to_le16(
2372 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 2373
2374 /* qlt_24xx_init_ctio_to_isp will correct
2375 * all neccessary fields that's part of CTIO7.
2376 * There should be no residual of CTIO-CRC2 data.
2377 */
2d70c103
NB		 2378 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2379 &prm);
2380 pr_debug("Status CTIO7: %p\n", ctio);
2381 }
2382 } else
2383 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2384
2385
2386 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
2387
2d70c103
NB		 2388 qla2x00_start_iocbs(vha, vha->req);
2389 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2390
2391 return 0;
2392
2393out_unmap_unlock:
2394 if (cmd->sg_mapped)
2395 qlt_unmap_sg(vha, cmd);
2396 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2397
2398 return res;
2399}
2400EXPORT_SYMBOL(qlt_xmit_response);
2401
2402int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2403{
2404 struct ctio7_to_24xx *pkt;
2405 struct scsi_qla_host *vha = cmd->vha;
2406 struct qla_hw_data *ha = vha->hw;
2407 struct qla_tgt *tgt = cmd->tgt;
2408 struct qla_tgt_prm prm;
2409 unsigned long flags;
2410 int res = 0;
2411
2412 memset(&prm, 0, sizeof(prm));
2413 prm.cmd = cmd;
2414 prm.tgt = tgt;
2415 prm.sg = NULL;
2416 prm.req_cnt = 1;
2417
2418 /* Send marker if required */
2419 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2420 return -EIO;
2421
2d70c103
NB		 2422 /* Calculate number of entries and segments required */
2423 if (qlt_pci_map_calc_cnt(&prm) != 0)
2424 return -EAGAIN;
2425
2426 spin_lock_irqsave(&ha->hardware_lock, flags);
2427
b6a029e1
AE		 2428 if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
2429 /*
2430 * Either a chip reset is active or this request was from
2431 * previous life, just abort the processing.
2432 */
2433 cmd->state = QLA_TGT_STATE_NEED_DATA;
2434 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2435 ql_dbg(ql_dbg_async, vha, 0xe102,
2436 "RESET-XFR active/old-count/new-count = %d/%d/%d.\n",
2437 qla2x00_reset_active(vha), cmd->reset_count,
2438 ha->chip_reset);
2439 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2440 return 0;
2441 }
2442
2d70c103
NB		 2443 /* Does F/W have an IOCBs for this request */
2444 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2445 if (res != 0)
2446 goto out_unlock_free_unmap;
f83adb61
QT		 2447 if (cmd->se_cmd.prot_op)
2448 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2449 else
2450 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 2451
2d70c103
NB		 2452 if (unlikely(res != 0))
2453 goto out_unlock_free_unmap;
2454 pkt = (struct ctio7_to_24xx *)prm.pkt;
2455 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2456 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 2457
2458 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2459 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2460
2461 cmd->state = QLA_TGT_STATE_NEED_DATA;
2462
2463 qla2x00_start_iocbs(vha, vha->req);
2464 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2465
2466 return res;
2467
2468out_unlock_free_unmap:
2469 if (cmd->sg_mapped)
2470 qlt_unmap_sg(vha, cmd);
2471 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2472
2473 return res;
2474}
2475EXPORT_SYMBOL(qlt_rdy_to_xfer);
2476
f83adb61
QT		 2477
2478/*
2479 * Checks the guard or meta-data for the type of error
2480 * detected by the HBA.
2481 */
2482static inline int
2483qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2484 struct ctio_crc_from_fw *sts)
2485{
2486 uint8_t *ap = &sts->actual_dif[0];
2487 uint8_t *ep = &sts->expected_dif[0];
2488 uint32_t e_ref_tag, a_ref_tag;
2489 uint16_t e_app_tag, a_app_tag;
2490 uint16_t e_guard, a_guard;
2491 uint64_t lba = cmd->se_cmd.t_task_lba;
2492
2493 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2494 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2495 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2496
2497 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2498 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2499 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2500
2501 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2502 "iocb(s) %p Returned STATUS.\n", sts);
2503
2504 ql_dbg(ql_dbg_tgt, vha, 0xf075,
fc385045 2505 "dif check TGT 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]\n",
f83adb61
QT		 2506 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2507 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2508
2509 /*
2510 * Ignore sector if:
2511 * For type 3: ref & app tag is all 'f's
2512 * For type 0,1,2: app tag is all 'f's
2513 */
2514 if ((a_app_tag == 0xffff) &&
2515 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2516 (a_ref_tag == 0xffffffff))) {
2517 uint32_t blocks_done;
2518
2519 /* 2TB boundary case covered automatically with this */
2520 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2521 cmd->se_cmd.bad_sector = e_ref_tag;
2522 cmd->se_cmd.pi_err = 0;
2523 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2524 "need to return scsi good\n");
2525
2526 /* Update protection tag */
2527 if (cmd->prot_sg_cnt) {
2528 uint32_t i, j = 0, k = 0, num_ent;
2529 struct scatterlist *sg, *sgl;
2530
2531
2532 sgl = cmd->prot_sg;
2533
2534 /* Patch the corresponding protection tags */
2535 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2536 num_ent = sg_dma_len(sg) / 8;
2537 if (k + num_ent < blocks_done) {
2538 k += num_ent;
2539 continue;
2540 }
2541 j = blocks_done - k - 1;
2542 k = blocks_done;
2543 break;
2544 }
2545
2546 if (k != blocks_done) {
2547 ql_log(ql_log_warn, vha, 0xf076,
2548 "unexpected tag values tag:lba=%u:%llu)\n",
2549 e_ref_tag, (unsigned long long)lba);
2550 goto out;
2551 }
2552
2553#if 0
2554 struct sd_dif_tuple *spt;
2555 /* TODO:
2556 * This section came from initiator. Is it valid here?
2557 * should ulp be override with actual val???
2558 */
2559 spt = page_address(sg_page(sg)) + sg->offset;
2560 spt += j;
2561
2562 spt->app_tag = 0xffff;
2563 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2564 spt->ref_tag = 0xffffffff;
2565#endif
2566 }
2567
2568 return 0;
2569 }
2570
2571 /* check guard */
2572 if (e_guard != a_guard) {
2573 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2574 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2575
2576 ql_log(ql_log_warn, vha, 0xe076,
2577 "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",
2578 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2579 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2580 a_guard, e_guard, cmd);
2581 goto out;
2582 }
2583
2584 /* check ref tag */
2585 if (e_ref_tag != a_ref_tag) {
2586 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
2587 cmd->se_cmd.bad_sector = e_ref_tag;
2588
2589 ql_log(ql_log_warn, vha, 0xe077,
2590 "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",
2591 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2592 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2593 a_guard, e_guard, cmd);
2594 goto out;
2595 }
2596
2597 /* check appl tag */
2598 if (e_app_tag != a_app_tag) {
2599 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
2600 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2601
2602 ql_log(ql_log_warn, vha, 0xe078,
2603 "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",
2604 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2605 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2606 a_guard, e_guard, cmd);
2607 goto out;
2608 }
2609out:
2610 return 1;
2611}
2612
2613
2d70c103
NB		 2614/* If hardware_lock held on entry, might drop it, then reaquire */
2615/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2616static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2617 struct qla_tgt_cmd *cmd,
2618 struct atio_from_isp *atio)
2619{
2620 struct ctio7_to_24xx *ctio24;
2621 struct qla_hw_data *ha = vha->hw;
2622 request_t *pkt;
2623 int ret = 0;
33a5fcee 2624 uint16_t temp;
2d70c103
NB		 2625
2626 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2627
b6a029e1 2628 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 2629 if (pkt == NULL) {
2630 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2631 "qla_target(%d): %s failed: unable to allocate "
2632 "request packet\n", vha->vp_idx, __func__);
2633 return -ENOMEM;
2634 }
2635
2636 if (cmd != NULL) {
2637 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2638 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2639 "qla_target(%d): Terminating cmd %p with "
2640 "incorrect state %d\n", vha->vp_idx, cmd,
2641 cmd->state);
2642 } else
2643 ret = 1;
2644 }
2645
2646 pkt->entry_count = 1;
2647 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2648
2649 ctio24 = (struct ctio7_to_24xx *)pkt;
2650 ctio24->entry_type = CTIO_TYPE7;
2651 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2652 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2653 ctio24->vp_index = vha->vp_idx;
2654 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2655 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2656 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2657 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2658 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2659 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2660 CTIO7_FLAGS_TERMINATE);
33a5fcee
QT		 2661 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2662 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2663
2664 /* Most likely, it isn't needed */
2665 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2666 &atio->u.isp24.fcp_cmnd.add_cdb[
2667 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2668 if (ctio24->u.status1.residual != 0)
2669 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2670
2671 qla2x00_start_iocbs(vha, vha->req);
2672 return ret;
2673}
2674
2675static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2676 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2677{
2678 unsigned long flags;
2679 int rc;
2680
2681 if (qlt_issue_marker(vha, ha_locked) < 0)
2682 return;
2683
2684 if (ha_locked) {
2685 rc = __qlt_send_term_exchange(vha, cmd, atio);
2686 goto done;
2687 }
2688 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2689 rc = __qlt_send_term_exchange(vha, cmd, atio);
2690 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2691done:
7b898542
QT		 2692 /*
2693 * Terminate exchange will tell fw to release any active CTIO
2694 * that's in FW posession and cleanup the exchange.
2695 *
2696 * "cmd->state == QLA_TGT_STATE_ABORTED" means CTIO is still
2697 * down at FW. Free the cmd later when CTIO comes back later
2698 * w/aborted(0x2) status.
2699 *
2700 * "cmd->state != QLA_TGT_STATE_ABORTED" means CTIO is already
2701 * back w/some err. Free the cmd now.
2702 */
2703 if ((rc == 1) && (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 2704 if (!ha_locked && !in_interrupt())
2705 msleep(250); /* just in case */
2706
f83adb61
QT		 2707 if (cmd->sg_mapped)
2708 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2709 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2710 }
7b898542 2711 return;
2d70c103
NB		 2712}
2713
2714void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2715{
51a07f84
NB		 2716 struct qla_tgt_sess *sess = cmd->sess;
2717
f83adb61
QT		 2718 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
2719 "%s: se_cmd[%p] ox_id %04x\n",
2720 __func__, &cmd->se_cmd,
2721 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 2722
f83adb61 2723 BUG_ON(cmd->sg_mapped);
2d70c103
NB		 2724 if (unlikely(cmd->free_sg))
2725 kfree(cmd->sg);
51a07f84
NB		 2726
2727 if (!sess || !sess->se_sess) {
2728 WARN_ON(1);
2729 return;
2730 }
2731 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 2732}
2733EXPORT_SYMBOL(qlt_free_cmd);
2734
2735/* ha->hardware_lock supposed to be held on entry */
2736static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2737 struct qla_tgt_cmd *cmd, void *ctio)
2738{
2739 struct qla_tgt_srr_ctio *sc;
0e8cd71c 2740 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 2741 struct qla_tgt_srr_imm *imm;
2742
2743 tgt->ctio_srr_id++;
2744
2745 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2746 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2747
2748 if (!ctio) {
2749 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2750 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2751 vha->vp_idx);
2752 return -EINVAL;
2753 }
2754
2755 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2756 if (sc != NULL) {
2757 sc->cmd = cmd;
2758 /* IRQ is already OFF */
2759 spin_lock(&tgt->srr_lock);
2760 sc->srr_id = tgt->ctio_srr_id;
2761 list_add_tail(&sc->srr_list_entry,
2762 &tgt->srr_ctio_list);
2763 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2764 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2765 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2766 int found = 0;
2767 list_for_each_entry(imm, &tgt->srr_imm_list,
2768 srr_list_entry) {
2769 if (imm->srr_id == sc->srr_id) {
2770 found = 1;
2771 break;
2772 }
2773 }
2774 if (found) {
2775 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2776 "Scheduling srr work\n");
2777 schedule_work(&tgt->srr_work);
2778 } else {
2779 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2780 "qla_target(%d): imm_srr_id "
2781 "== ctio_srr_id (%d), but there is no "
2782 "corresponding SRR IMM, deleting CTIO "
2783 "SRR %p\n", vha->vp_idx,
2784 tgt->ctio_srr_id, sc);
2785 list_del(&sc->srr_list_entry);
2786 spin_unlock(&tgt->srr_lock);
2787
2788 kfree(sc);
2789 return -EINVAL;
2790 }
2791 }
2792 spin_unlock(&tgt->srr_lock);
2793 } else {
2794 struct qla_tgt_srr_imm *ti;
2795
2796 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2797 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2798 vha->vp_idx);
2799 spin_lock(&tgt->srr_lock);
2800 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2801 srr_list_entry) {
2802 if (imm->srr_id == tgt->ctio_srr_id) {
2803 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2804 "IMM SRR %p deleted (id %d)\n",
2805 imm, imm->srr_id);
2806 list_del(&imm->srr_list_entry);
2807 qlt_reject_free_srr_imm(vha, imm, 1);
2808 }
2809 }
2810 spin_unlock(&tgt->srr_lock);
2811
2812 return -ENOMEM;
2813 }
2814
2815 return 0;
2816}
2817
2818/*
2819 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2820 */
2821static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2822 struct qla_tgt_cmd *cmd, uint32_t status)
2823{
2824 int term = 0;
2825
2826 if (ctio != NULL) {
2827 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2828 term = !(c->flags &
2829 __constant_cpu_to_le16(OF_TERM_EXCH));
2830 } else
2831 term = 1;
2832
2833 if (term)
2834 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2835
2836 return term;
2837}
2838
2839/* ha->hardware_lock supposed to be held on entry */
2840static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2841 uint32_t handle)
2842{
2843 struct qla_hw_data *ha = vha->hw;
2844
2845 handle--;
2846 if (ha->tgt.cmds[handle] != NULL) {
2847 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2848 ha->tgt.cmds[handle] = NULL;
2849 return cmd;
2850 } else
2851 return NULL;
2852}
2853
2854/* ha->hardware_lock supposed to be held on entry */
2855static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2856 uint32_t handle, void *ctio)
2857{
2858 struct qla_tgt_cmd *cmd = NULL;
2859
2860 /* Clear out internal marks */
2861 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2862 CTIO_INTERMEDIATE_HANDLE_MARK);
2863
2864 if (handle != QLA_TGT_NULL_HANDLE) {
667024a3 2865 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
2d70c103 2866 return NULL;
667024a3 2867
2d70c103 2868 /* handle-1 is actually used */
8d93f550 2869 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 2870 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2871 "qla_target(%d): Wrong handle %x received\n",
2872 vha->vp_idx, handle);
2873 return NULL;
2874 }
2875 cmd = qlt_get_cmd(vha, handle);
2876 if (unlikely(cmd == NULL)) {
2877 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2878 "qla_target(%d): Suspicious: unable to "
2879 "find the command with handle %x\n", vha->vp_idx,
2880 handle);
2881 return NULL;
2882 }
2883 } else if (ctio != NULL) {
2884 /* We can't get loop ID from CTIO7 */
2885 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2886 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2887 "support NULL handles\n", vha->vp_idx);
2888 return NULL;
2889 }
2890
2891 return cmd;
2892}
2893
c0cb4496
AE		 2894/* hardware_lock should be held by caller. */
2895static void
2896qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2897{
2898 struct qla_hw_data *ha = vha->hw;
2899 uint32_t handle;
2900
2901 if (cmd->sg_mapped)
2902 qlt_unmap_sg(vha, cmd);
2903
2904 handle = qlt_make_handle(vha);
2905
2906 /* TODO: fix debug message type and ids. */
2907 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
2908 ql_dbg(ql_dbg_io, vha, 0xff00,
2909 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
2910 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2911 cmd->write_data_transferred = 0;
2912 cmd->state = QLA_TGT_STATE_DATA_IN;
2913
2914 ql_dbg(ql_dbg_io, vha, 0xff01,
2915 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
2916
2917 ha->tgt.tgt_ops->handle_data(cmd);
2918 return;
2919 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
2920 ql_dbg(ql_dbg_io, vha, 0xff02,
2921 "HOST-ABORT: handle=%d, state=ABORTED.\n", handle);
2922 } else {
2923 ql_dbg(ql_dbg_io, vha, 0xff03,
2924 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
2925 cmd->state);
2926 dump_stack();
2927 }
2928
2929 ha->tgt.tgt_ops->free_cmd(cmd);
2930}
2931
2932void
2933qlt_host_reset_handler(struct qla_hw_data *ha)
2934{
2935 struct qla_tgt_cmd *cmd;
2936 unsigned long flags;
2937 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2938 scsi_qla_host_t *vha = NULL;
2939 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
2940 uint32_t i;
2941
2942 if (!base_vha->hw->tgt.tgt_ops)
2943 return;
2944
2945 if (!tgt || qla_ini_mode_enabled(base_vha)) {
2946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
2947 "Target mode disabled\n");
2948 return;
2949 }
2950
2951 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
2952 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
2953 base_vha->dpc_flags);
2954
2955 spin_lock_irqsave(&ha->hardware_lock, flags);
2956 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
2957 cmd = qlt_get_cmd(base_vha, i);
2958 if (!cmd)
2959 continue;
2960 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
2961 vha = cmd->vha;
2962 qlt_abort_cmd_on_host_reset(vha, cmd);
2963 }
2964 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2965}
2966
2967
2d70c103
NB		 2968/*
2969 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2970 */
2971static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2972 uint32_t status, void *ctio)
2973{
2974 struct qla_hw_data *ha = vha->hw;
2975 struct se_cmd *se_cmd;
2976 struct target_core_fabric_ops *tfo;
2977 struct qla_tgt_cmd *cmd;
2978
2d70c103
NB		 2979 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2980 /* That could happen only in case of an error/reset/abort */
2981 if (status != CTIO_SUCCESS) {
2982 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2983 "Intermediate CTIO received"
2984 " (status %x)\n", status);
2985 }
2986 return;
2987 }
2988
2989 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 2990 if (cmd == NULL)
2d70c103 2991 return;
092e1dc3 2992
2d70c103
NB		 2993 se_cmd = &cmd->se_cmd;
2994 tfo = se_cmd->se_tfo;
2995
2996 if (cmd->sg_mapped)
2997 qlt_unmap_sg(vha, cmd);
2998
2999 if (unlikely(status != CTIO_SUCCESS)) {
3000 switch (status & 0xFFFF) {
3001 case CTIO_LIP_RESET:
3002 case CTIO_TARGET_RESET:
3003 case CTIO_ABORTED:
7b898542 3004 /* driver request abort via Terminate exchange */
2d70c103
NB		 3005 case CTIO_TIMEOUT:
3006 case CTIO_INVALID_RX_ID:
3007 /* They are OK */
3008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3009 "qla_target(%d): CTIO with "
3010 "status %#x received, state %x, se_cmd %p, "
3011 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3012 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3013 status, cmd->state, se_cmd);
3014 break;
3015
3016 case CTIO_PORT_LOGGED_OUT:
3017 case CTIO_PORT_UNAVAILABLE:
3018 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
3019 "qla_target(%d): CTIO with PORT LOGGED "
3020 "OUT (29) or PORT UNAVAILABLE (28) status %x "
3021 "received (state %x, se_cmd %p)\n", vha->vp_idx,
3022 status, cmd->state, se_cmd);
3023 break;
3024
3025 case CTIO_SRR_RECEIVED:
3026 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
3027 "qla_target(%d): CTIO with SRR_RECEIVED"
3028 " status %x received (state %x, se_cmd %p)\n",
3029 vha->vp_idx, status, cmd->state, se_cmd);
3030 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
3031 break;
3032 else
3033 return;
3034
f83adb61
QT		 3035 case CTIO_DIF_ERROR: {
3036 struct ctio_crc_from_fw *crc =
3037 (struct ctio_crc_from_fw *)ctio;
3038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3039 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
3040 vha->vp_idx, status, cmd->state, se_cmd,
3041 *((u64 *)&crc->actual_dif[0]),
3042 *((u64 *)&crc->expected_dif[0]));
3043
3044 if (qlt_handle_dif_error(vha, cmd, ctio)) {
3045 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3046 /* scsi Write/xfer rdy complete */
3047 goto skip_term;
3048 } else {
3049 /* scsi read/xmit respond complete
3050 * call handle dif to send scsi status
3051 * rather than terminate exchange.
3052 */
3053 cmd->state = QLA_TGT_STATE_PROCESSED;
3054 ha->tgt.tgt_ops->handle_dif_err(cmd);
3055 return;
3056 }
3057 } else {
3058 /* Need to generate a SCSI good completion.
3059 * because FW did not send scsi status.
3060 */
3061 status = 0;
3062 goto skip_term;
3063 }
3064 break;
3065 }
2d70c103
NB		 3066 default:
3067 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3068 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3069 vha->vp_idx, status, cmd->state, se_cmd);
3070 break;
3071 }
3072
7b898542
QT		 3073
3074 /* "cmd->state == QLA_TGT_STATE_ABORTED" means
3075 * cmd is already aborted/terminated, we don't
3076 * need to terminate again. The exchange is already
3077 * cleaned up/freed at FW level. Just cleanup at driver
3078 * level.
3079 */
3080 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3081 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3082 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3083 return;
7b898542 3084 }
2d70c103 3085 }
f83adb61 3086skip_term:
2d70c103
NB		 3087
3088 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
667024a3 3089 ;
2d70c103
NB		 3090 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3091 int rx_status = 0;
3092
3093 cmd->state = QLA_TGT_STATE_DATA_IN;
3094
3095 if (unlikely(status != CTIO_SUCCESS))
3096 rx_status = -EIO;
3097 else
3098 cmd->write_data_transferred = 1;
3099
2d70c103
NB		 3100 ha->tgt.tgt_ops->handle_data(cmd);
3101 return;
3102 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
3103 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3104 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
3105 } else {
3106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3107 "qla_target(%d): A command in state (%d) should "
3108 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3109 }
3110
7b898542
QT		 3111 if (unlikely(status != CTIO_SUCCESS) &&
3112 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3114 dump_stack();
3115 }
3116
3117 ha->tgt.tgt_ops->free_cmd(cmd);
3118}
3119
2d70c103
NB		 3120static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3121 uint8_t task_codes)
3122{
3123 int fcp_task_attr;
3124
3125 switch (task_codes) {
3126 case ATIO_SIMPLE_QUEUE:
3127 fcp_task_attr = MSG_SIMPLE_TAG;
3128 break;
3129 case ATIO_HEAD_OF_QUEUE:
3130 fcp_task_attr = MSG_HEAD_TAG;
3131 break;
3132 case ATIO_ORDERED_QUEUE:
3133 fcp_task_attr = MSG_ORDERED_TAG;
3134 break;
3135 case ATIO_ACA_QUEUE:
3136 fcp_task_attr = MSG_ACA_TAG;
3137 break;
3138 case ATIO_UNTAGGED:
3139 fcp_task_attr = MSG_SIMPLE_TAG;
3140 break;
3141 default:
3142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3143 "qla_target: unknown task code %x, use ORDERED instead\n",
3144 task_codes);
3145 fcp_task_attr = MSG_ORDERED_TAG;
3146 break;
3147 }
3148
3149 return fcp_task_attr;
3150}
3151
3152static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3153 uint8_t *);
3154/*
3155 * Process context for I/O path into tcm_qla2xxx code
3156 */
51a07f84 3157static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3158{
2d70c103
NB		 3159 scsi_qla_host_t *vha = cmd->vha;
3160 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3161 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3162 struct qla_tgt_sess *sess = cmd->sess;
2d70c103
NB		 3163 struct atio_from_isp *atio = &cmd->atio;
3164 unsigned char *cdb;
3165 unsigned long flags;
3166 uint32_t data_length;
3167 int ret, fcp_task_attr, data_dir, bidi = 0;
3168
3169 if (tgt->tgt_stop)
3170 goto out_term;
3171
2d70c103
NB		 3172 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
3173 cmd->tag = atio->u.isp24.exchange_addr;
3174 cmd->unpacked_lun = scsilun_to_int(
3175 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3176
3177 if (atio->u.isp24.fcp_cmnd.rddata &&
3178 atio->u.isp24.fcp_cmnd.wrdata) {
3179 bidi = 1;
3180 data_dir = DMA_TO_DEVICE;
3181 } else if (atio->u.isp24.fcp_cmnd.rddata)
3182 data_dir = DMA_FROM_DEVICE;
3183 else if (atio->u.isp24.fcp_cmnd.wrdata)
3184 data_dir = DMA_TO_DEVICE;
3185 else
3186 data_dir = DMA_NONE;
3187
3188 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3189 atio->u.isp24.fcp_cmnd.task_attr);
3190 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3191 &atio->u.isp24.fcp_cmnd.add_cdb[
3192 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3193
51a07f84
NB		 3194 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3195 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 3196 if (ret != 0)
3197 goto out_term;
3198 /*
3199 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3200 */
08234e3a 3201 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 3202 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 3203 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 3204 return;
3205
3206out_term:
667024a3 3207 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 3208 /*
fae9eaf8
RD		 3209 * cmd has not sent to target yet, so pass NULL as the second
3210 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103
NB		 3211 */
3212 spin_lock_irqsave(&ha->hardware_lock, flags);
3213 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
51a07f84
NB		 3214 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3215 ha->tgt.tgt_ops->put_sess(sess);
3216 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3217}
3218
3219static void qlt_do_work(struct work_struct *work)
3220{
3221 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
3222
3223 __qlt_do_work(cmd);
3224}
3225
3226static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
3227 struct qla_tgt_sess *sess,
3228 struct atio_from_isp *atio)
3229{
3230 struct se_session *se_sess = sess->se_sess;
3231 struct qla_tgt_cmd *cmd;
3232 int tag;
3233
3234 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3235 if (tag < 0)
3236 return NULL;
3237
3238 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3239 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3240
3241 memcpy(&cmd->atio, atio, sizeof(*atio));
3242 cmd->state = QLA_TGT_STATE_NEW;
3243 cmd->tgt = vha->vha_tgt.qla_tgt;
3244 cmd->vha = vha;
3245 cmd->se_cmd.map_tag = tag;
3246 cmd->sess = sess;
3247 cmd->loop_id = sess->loop_id;
3248 cmd->conf_compl_supported = sess->conf_compl_supported;
3249
3250 return cmd;
3251}
3252
3253static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
3254 uint16_t);
3255
3256static void qlt_create_sess_from_atio(struct work_struct *work)
3257{
3258 struct qla_tgt_sess_op *op = container_of(work,
3259 struct qla_tgt_sess_op, work);
3260 scsi_qla_host_t *vha = op->vha;
3261 struct qla_hw_data *ha = vha->hw;
3262 struct qla_tgt_sess *sess;
3263 struct qla_tgt_cmd *cmd;
3264 unsigned long flags;
3265 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
3266
3267 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
3268 "qla_target(%d): Unable to find wwn login"
3269 " (s_id %x:%x:%x), trying to create it manually\n",
3270 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
3271
3272 if (op->atio.u.raw.entry_count > 1) {
3273 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
3274 "Dropping multy entry atio %p\n", &op->atio);
3275 goto out_term;
3276 }
3277
3278 mutex_lock(&vha->vha_tgt.tgt_mutex);
3279 sess = qlt_make_local_sess(vha, s_id);
3280 /* sess has an extra creation ref. */
3281 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3282
3283 if (!sess)
3284 goto out_term;
3285 /*
3286 * Now obtain a pre-allocated session tag using the original op->atio
3287 * packet header, and dispatch into __qlt_do_work() using the existing
3288 * process context.
3289 */
3290 cmd = qlt_get_tag(vha, sess, &op->atio);
3291 if (!cmd) {
3292 spin_lock_irqsave(&ha->hardware_lock, flags);
3293 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
2d70c103 3294 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 3295 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3296 kfree(op);
3297 return;
3298 }
3299 /*
3300 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release
3301 * the extra reference taken above by qlt_make_local_sess()
3302 */
3303 __qlt_do_work(cmd);
3304 kfree(op);
3305 return;
3306
3307out_term:
3308 spin_lock_irqsave(&ha->hardware_lock, flags);
3309 qlt_send_term_exchange(vha, NULL, &op->atio, 1);
08234e3a 3310 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84
NB		 3311 kfree(op);
3312
2d70c103
NB		 3313}
3314
3315/* ha->hardware_lock supposed to be held on entry */
3316static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3317 struct atio_from_isp *atio)
3318{
51a07f84 3319 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3320 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3321 struct qla_tgt_sess *sess;
2d70c103
NB		 3322 struct qla_tgt_cmd *cmd;
3323
3324 if (unlikely(tgt->tgt_stop)) {
667024a3 3325 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 3326 "New command while device %p is shutting down\n", tgt);
3327 return -EFAULT;
3328 }
3329
51a07f84
NB		 3330 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
3331 if (unlikely(!sess)) {
3332 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
3333 GFP_ATOMIC);
3334 if (!op)
3335 return -ENOMEM;
3336
3337 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 3338 op->vha = vha;
51a07f84
NB		 3339 INIT_WORK(&op->work, qlt_create_sess_from_atio);
3340 queue_work(qla_tgt_wq, &op->work);
3341 return 0;
3342 }
3343 /*
3344 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
3345 */
3346 kref_get(&sess->se_sess->sess_kref);
3347
3348 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 3349 if (!cmd) {
667024a3 3350 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 3351 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
51a07f84 3352 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 3353 return -ENOMEM;
3354 }
3355
b6a029e1
AE		 3356 cmd->reset_count = vha->hw->chip_reset;
3357
2d70c103
NB		 3358 INIT_WORK(&cmd->work, qlt_do_work);
3359 queue_work(qla_tgt_wq, &cmd->work);
3360 return 0;
3361
3362}
3363
3364/* ha->hardware_lock supposed to be held on entry */
3365static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
3366 int fn, void *iocb, int flags)
3367{
3368 struct scsi_qla_host *vha = sess->vha;
3369 struct qla_hw_data *ha = vha->hw;
3370 struct qla_tgt_mgmt_cmd *mcmd;
3371 int res;
3372 uint8_t tmr_func;
3373
3374 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3375 if (!mcmd) {
3376 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
3377 "qla_target(%d): Allocation of management "
3378 "command failed, some commands and their data could "
3379 "leak\n", vha->vp_idx);
3380 return -ENOMEM;
3381 }
3382 memset(mcmd, 0, sizeof(*mcmd));
3383 mcmd->sess = sess;
3384
3385 if (iocb) {
3386 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3387 sizeof(mcmd->orig_iocb.imm_ntfy));
3388 }
3389 mcmd->tmr_func = fn;
3390 mcmd->flags = flags;
b6a029e1 3391 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 3392
3393 switch (fn) {
3394 case QLA_TGT_CLEAR_ACA:
3395 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
3396 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
3397 tmr_func = TMR_CLEAR_ACA;
3398 break;
3399
3400 case QLA_TGT_TARGET_RESET:
3401 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
3402 "qla_target(%d): TARGET_RESET received\n",
3403 sess->vha->vp_idx);
3404 tmr_func = TMR_TARGET_WARM_RESET;
3405 break;
3406
3407 case QLA_TGT_LUN_RESET:
3408 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
3409 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
3410 tmr_func = TMR_LUN_RESET;
3411 break;
3412
3413 case QLA_TGT_CLEAR_TS:
3414 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
3415 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
3416 tmr_func = TMR_CLEAR_TASK_SET;
3417 break;
3418
3419 case QLA_TGT_ABORT_TS:
3420 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
3421 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
3422 tmr_func = TMR_ABORT_TASK_SET;
3423 break;
3424#if 0
3425 case QLA_TGT_ABORT_ALL:
3426 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
3427 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
3428 sess->vha->vp_idx);
3429 tmr_func = 0;
3430 break;
3431
3432 case QLA_TGT_ABORT_ALL_SESS:
3433 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
3434 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
3435 sess->vha->vp_idx);
3436 tmr_func = 0;
3437 break;
3438
3439 case QLA_TGT_NEXUS_LOSS_SESS:
3440 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
3441 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
3442 sess->vha->vp_idx);
3443 tmr_func = 0;
3444 break;
3445
3446 case QLA_TGT_NEXUS_LOSS:
3447 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
3448 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
3449 tmr_func = 0;
3450 break;
3451#endif
3452 default:
3453 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
3454 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
3455 sess->vha->vp_idx, fn);
3456 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3457 return -ENOSYS;
3458 }
3459
3460 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
3461 if (res != 0) {
3462 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
3463 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
3464 sess->vha->vp_idx, res);
3465 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3466 return -EFAULT;
3467 }
3468
3469 return 0;
3470}
3471
3472/* ha->hardware_lock supposed to be held on entry */
3473static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
3474{
3475 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3476 struct qla_hw_data *ha = vha->hw;
3477 struct qla_tgt *tgt;
3478 struct qla_tgt_sess *sess;
3479 uint32_t lun, unpacked_lun;
3480 int lun_size, fn;
3481
0e8cd71c 3482 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3483
3484 lun = a->u.isp24.fcp_cmnd.lun;
3485 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
3486 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
3487 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3488 a->u.isp24.fcp_hdr.s_id);
3489 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3490
3491 if (!sess) {
3492 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
3493 "qla_target(%d): task mgmt fn 0x%x for "
3494 "non-existant session\n", vha->vp_idx, fn);
3495 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
3496 sizeof(struct atio_from_isp));
3497 }
3498
3499 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
3500}
3501
3502/* ha->hardware_lock supposed to be held on entry */
3503static int __qlt_abort_task(struct scsi_qla_host *vha,
3504 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
3505{
3506 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3507 struct qla_hw_data *ha = vha->hw;
3508 struct qla_tgt_mgmt_cmd *mcmd;
3509 uint32_t lun, unpacked_lun;
3510 int rc;
3511
3512 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3513 if (mcmd == NULL) {
3514 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
3515 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
3516 vha->vp_idx, __func__);
3517 return -ENOMEM;
3518 }
3519 memset(mcmd, 0, sizeof(*mcmd));
3520
3521 mcmd->sess = sess;
3522 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3523 sizeof(mcmd->orig_iocb.imm_ntfy));
3524
3525 lun = a->u.isp24.fcp_cmnd.lun;
3526 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
80187f8e 3527 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 3528
3529 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
3530 le16_to_cpu(iocb->u.isp2x.seq_id));
3531 if (rc != 0) {
3532 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
3533 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
3534 vha->vp_idx, rc);
3535 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3536 return -EFAULT;
3537 }
3538
3539 return 0;
3540}
3541
3542/* ha->hardware_lock supposed to be held on entry */
3543static int qlt_abort_task(struct scsi_qla_host *vha,
3544 struct imm_ntfy_from_isp *iocb)
3545{
3546 struct qla_hw_data *ha = vha->hw;
3547 struct qla_tgt_sess *sess;
3548 int loop_id;
3549
3550 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
3551
3552 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
3553 if (sess == NULL) {
3554 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
3555 "qla_target(%d): task abort for unexisting "
3556 "session\n", vha->vp_idx);
0e8cd71c 3557 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 3558 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
3559 }
3560
3561 return __qlt_abort_task(vha, iocb, sess);
3562}
3563
3564/*
3565 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3566 */
3567static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
3568 struct imm_ntfy_from_isp *iocb)
3569{
2d70c103
NB		 3570 int res = 0;
3571
3572 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
7b833558
OK		 3573 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
3574 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2d70c103
NB		 3575
3576 switch (iocb->u.isp24.status_subcode) {
3577 case ELS_PLOGI:
3578 case ELS_FLOGI:
3579 case ELS_PRLI:
3580 case ELS_LOGO:
3581 case ELS_PRLO:
3582 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3583 break;
3584 case ELS_PDISC:
3585 case ELS_ADISC:
3586 {
0e8cd71c 3587 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3588 if (tgt->link_reinit_iocb_pending) {
3589 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3590 0, 0, 0, 0, 0, 0);
3591 tgt->link_reinit_iocb_pending = 0;
3592 }
3593 res = 1; /* send notify ack */
3594 break;
3595 }
3596
3597 default:
3598 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
3599 "qla_target(%d): Unsupported ELS command %x "
3600 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
3601 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3602 break;
3603 }
3604
3605 return res;
3606}
3607
3608static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
3609{
3610 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
3611 size_t first_offset = 0, rem_offset = offset, tmp = 0;
3612 int i, sg_srr_cnt, bufflen = 0;
3613
3614 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
3615 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
3616 "cmd->sg_cnt: %u, direction: %d\n",
3617 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
3618
3619 /*
3620 * FIXME: Reject non zero SRR relative offset until we can test
3621 * this code properly.
3622 */
3623 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
3624 return -1;
3625
3626 if (!cmd->sg || !cmd->sg_cnt) {
3627 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
3628 "Missing cmd->sg or zero cmd->sg_cnt in"
3629 " qla_tgt_set_data_offset\n");
3630 return -EINVAL;
3631 }
3632 /*
3633 * Walk the current cmd->sg list until we locate the new sg_srr_start
3634 */
3635 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
3636 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
3637 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
3638 i, sg, sg_page(sg), sg->length, sg->offset);
3639
3640 if ((sg->length + tmp) > offset) {
3641 first_offset = rem_offset;
3642 sg_srr_start = sg;
3643 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
3644 "Found matching sg[%d], using %p as sg_srr_start, "
3645 "and using first_offset: %zu\n", i, sg,
3646 first_offset);
3647 break;
3648 }
3649 tmp += sg->length;
3650 rem_offset -= sg->length;
3651 }
3652
3653 if (!sg_srr_start) {
3654 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
3655 "Unable to locate sg_srr_start for offset: %u\n", offset);
3656 return -EINVAL;
3657 }
3658 sg_srr_cnt = (cmd->sg_cnt - i);
3659
3660 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
3661 if (!sg_srr) {
3662 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
3663 "Unable to allocate sgp\n");
3664 return -ENOMEM;
3665 }
3666 sg_init_table(sg_srr, sg_srr_cnt);
3667 sgp = &sg_srr[0];
3668 /*
3669 * Walk the remaining list for sg_srr_start, mapping to the newly
3670 * allocated sg_srr taking first_offset into account.
3671 */
3672 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
3673 if (first_offset) {
3674 sg_set_page(sgp, sg_page(sg),
3675 (sg->length - first_offset), first_offset);
3676 first_offset = 0;
3677 } else {
3678 sg_set_page(sgp, sg_page(sg), sg->length, 0);
3679 }
3680 bufflen += sgp->length;
3681
3682 sgp = sg_next(sgp);
3683 if (!sgp)
3684 break;
3685 }
3686
3687 cmd->sg = sg_srr;
3688 cmd->sg_cnt = sg_srr_cnt;
3689 cmd->bufflen = bufflen;
3690 cmd->offset += offset;
3691 cmd->free_sg = 1;
3692
3693 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
3694 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
3695 cmd->sg_cnt);
3696 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
3697 cmd->bufflen);
3698 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
3699 cmd->offset);
3700
3701 if (cmd->sg_cnt < 0)
3702 BUG();
3703
3704 if (cmd->bufflen < 0)
3705 BUG();
3706
3707 return 0;
3708}
3709
3710static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
3711 uint32_t srr_rel_offs, int *xmit_type)
3712{
3713 int res = 0, rel_offs;
3714
3715 rel_offs = srr_rel_offs - cmd->offset;
3716 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
3717 srr_rel_offs, rel_offs);
3718
3719 *xmit_type = QLA_TGT_XMIT_ALL;
3720
3721 if (rel_offs < 0) {
3722 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
3723 "qla_target(%d): SRR rel_offs (%d) < 0",
3724 cmd->vha->vp_idx, rel_offs);
3725 res = -1;
3726 } else if (rel_offs == cmd->bufflen)
3727 *xmit_type = QLA_TGT_XMIT_STATUS;
3728 else if (rel_offs > 0)
3729 res = qlt_set_data_offset(cmd, rel_offs);
3730
3731 return res;
3732}
3733
3734/* No locks, thread context */
3735static void qlt_handle_srr(struct scsi_qla_host *vha,
3736 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
3737{
3738 struct imm_ntfy_from_isp *ntfy =
3739 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
3740 struct qla_hw_data *ha = vha->hw;
3741 struct qla_tgt_cmd *cmd = sctio->cmd;
3742 struct se_cmd *se_cmd = &cmd->se_cmd;
3743 unsigned long flags;
3744 int xmit_type = 0, resp = 0;
3745 uint32_t offset;
3746 uint16_t srr_ui;
3747
3748 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
3749 srr_ui = ntfy->u.isp24.srr_ui;
3750
3751 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3752 cmd, srr_ui);
3753
3754 switch (srr_ui) {
3755 case SRR_IU_STATUS:
3756 spin_lock_irqsave(&ha->hardware_lock, flags);
3757 qlt_send_notify_ack(vha, ntfy,
3758 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3759 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3760 xmit_type = QLA_TGT_XMIT_STATUS;
3761 resp = 1;
3762 break;
3763 case SRR_IU_DATA_IN:
3764 if (!cmd->sg || !cmd->sg_cnt) {
3765 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3766 "Unable to process SRR_IU_DATA_IN due to"
3767 " missing cmd->sg, state: %d\n", cmd->state);
3768 dump_stack();
3769 goto out_reject;
3770 }
3771 if (se_cmd->scsi_status != 0) {
3772 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3773 "Rejecting SRR_IU_DATA_IN with non GOOD "
3774 "scsi_status\n");
3775 goto out_reject;
3776 }
3777 cmd->bufflen = se_cmd->data_length;
3778
3779 if (qlt_has_data(cmd)) {
3780 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3781 goto out_reject;
3782 spin_lock_irqsave(&ha->hardware_lock, flags);
3783 qlt_send_notify_ack(vha, ntfy,
3784 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3785 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3786 resp = 1;
3787 } else {
3788 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3789 "qla_target(%d): SRR for in data for cmd "
3790 "without them (tag %d, SCSI status %d), "
3791 "reject", vha->vp_idx, cmd->tag,
3792 cmd->se_cmd.scsi_status);
3793 goto out_reject;
3794 }
3795 break;
3796 case SRR_IU_DATA_OUT:
3797 if (!cmd->sg || !cmd->sg_cnt) {
3798 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3799 "Unable to process SRR_IU_DATA_OUT due to"
3800 " missing cmd->sg\n");
3801 dump_stack();
3802 goto out_reject;
3803 }
3804 if (se_cmd->scsi_status != 0) {
3805 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3806 "Rejecting SRR_IU_DATA_OUT"
3807 " with non GOOD scsi_status\n");
3808 goto out_reject;
3809 }
3810 cmd->bufflen = se_cmd->data_length;
3811
3812 if (qlt_has_data(cmd)) {
3813 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3814 goto out_reject;
3815 spin_lock_irqsave(&ha->hardware_lock, flags);
3816 qlt_send_notify_ack(vha, ntfy,
3817 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3818 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3819 if (xmit_type & QLA_TGT_XMIT_DATA)
3820 qlt_rdy_to_xfer(cmd);
3821 } else {
3822 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3823 "qla_target(%d): SRR for out data for cmd "
3824 "without them (tag %d, SCSI status %d), "
3825 "reject", vha->vp_idx, cmd->tag,
3826 cmd->se_cmd.scsi_status);
3827 goto out_reject;
3828 }
3829 break;
3830 default:
3831 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3832 "qla_target(%d): Unknown srr_ui value %x",
3833 vha->vp_idx, srr_ui);
3834 goto out_reject;
3835 }
3836
3837 /* Transmit response in case of status and data-in cases */
3838 if (resp)
3839 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3840
3841 return;
3842
3843out_reject:
3844 spin_lock_irqsave(&ha->hardware_lock, flags);
3845 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3846 NOTIFY_ACK_SRR_FLAGS_REJECT,
3847 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3848 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3849 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3850 cmd->state = QLA_TGT_STATE_DATA_IN;
3851 dump_stack();
3852 } else
3853 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3854 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3855}
3856
3857static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3858 struct qla_tgt_srr_imm *imm, int ha_locked)
3859{
3860 struct qla_hw_data *ha = vha->hw;
3861 unsigned long flags = 0;
3862
3863 if (!ha_locked)
3864 spin_lock_irqsave(&ha->hardware_lock, flags);
3865
3866 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3867 NOTIFY_ACK_SRR_FLAGS_REJECT,
3868 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3869 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3870
3871 if (!ha_locked)
3872 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3873
3874 kfree(imm);
3875}
3876
3877static void qlt_handle_srr_work(struct work_struct *work)
3878{
3879 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3880 struct scsi_qla_host *vha = tgt->vha;
3881 struct qla_tgt_srr_ctio *sctio;
3882 unsigned long flags;
3883
3884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3885 tgt);
3886
3887restart:
3888 spin_lock_irqsave(&tgt->srr_lock, flags);
3889 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3890 struct qla_tgt_srr_imm *imm, *i, *ti;
3891 struct qla_tgt_cmd *cmd;
3892 struct se_cmd *se_cmd;
3893
3894 imm = NULL;
3895 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3896 srr_list_entry) {
3897 if (i->srr_id == sctio->srr_id) {
3898 list_del(&i->srr_list_entry);
3899 if (imm) {
3900 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3901 "qla_target(%d): There must be "
3902 "only one IMM SRR per CTIO SRR "
3903 "(IMM SRR %p, id %d, CTIO %p\n",
3904 vha->vp_idx, i, i->srr_id, sctio);
3905 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3906 } else
3907 imm = i;
3908 }
3909 }
3910
3911 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3912 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3913 sctio->srr_id);
3914
3915 if (imm == NULL) {
3916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3917 "Not found matching IMM for SRR CTIO (id %d)\n",
3918 sctio->srr_id);
3919 continue;
3920 } else
3921 list_del(&sctio->srr_list_entry);
3922
3923 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3924
3925 cmd = sctio->cmd;
3926 /*
3927 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3928 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3929 * logic..
3930 */
3931 cmd->offset = 0;
3932 if (cmd->free_sg) {
3933 kfree(cmd->sg);
3934 cmd->sg = NULL;
3935 cmd->free_sg = 0;
3936 }
3937 se_cmd = &cmd->se_cmd;
3938
3939 cmd->sg_cnt = se_cmd->t_data_nents;
3940 cmd->sg = se_cmd->t_data_sg;
3941
3942 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3943 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3944 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
6f58c780
DGW		 3945 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
3946 cmd->sg_cnt, cmd->offset);
2d70c103
NB		 3947
3948 qlt_handle_srr(vha, sctio, imm);
3949
3950 kfree(imm);
3951 kfree(sctio);
3952 goto restart;
3953 }
3954 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3955}
3956
3957/* ha->hardware_lock supposed to be held on entry */
3958static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3959 struct imm_ntfy_from_isp *iocb)
3960{
3961 struct qla_tgt_srr_imm *imm;
0e8cd71c 3962 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3963 struct qla_tgt_srr_ctio *sctio;
3964
3965 tgt->imm_srr_id++;
3966
3967 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
3968 vha->vp_idx);
3969
3970 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
3971 if (imm != NULL) {
3972 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
3973
3974 /* IRQ is already OFF */
3975 spin_lock(&tgt->srr_lock);
3976 imm->srr_id = tgt->imm_srr_id;
3977 list_add_tail(&imm->srr_list_entry,
3978 &tgt->srr_imm_list);
3979 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
3980 "IMM NTFY SRR %p added (id %d, ui %x)\n",
3981 imm, imm->srr_id, iocb->u.isp24.srr_ui);
3982 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3983 int found = 0;
3984 list_for_each_entry(sctio, &tgt->srr_ctio_list,
3985 srr_list_entry) {
3986 if (sctio->srr_id == imm->srr_id) {
3987 found = 1;
3988 break;
3989 }
3990 }
3991 if (found) {
3992 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
3993 "Scheduling srr work\n");
3994 schedule_work(&tgt->srr_work);
3995 } else {
3996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
3997 "qla_target(%d): imm_srr_id "
3998 "== ctio_srr_id (%d), but there is no "
3999 "corresponding SRR CTIO, deleting IMM "
4000 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
4001 imm);
4002 list_del(&imm->srr_list_entry);
4003
4004 kfree(imm);
4005
4006 spin_unlock(&tgt->srr_lock);
4007 goto out_reject;
4008 }
4009 }
4010 spin_unlock(&tgt->srr_lock);
4011 } else {
4012 struct qla_tgt_srr_ctio *ts;
4013
4014 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
4015 "qla_target(%d): Unable to allocate SRR IMM "
4016 "entry, SRR request will be rejected\n", vha->vp_idx);
4017
4018 /* IRQ is already OFF */
4019 spin_lock(&tgt->srr_lock);
4020 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
4021 srr_list_entry) {
4022 if (sctio->srr_id == tgt->imm_srr_id) {
4023 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
4024 "CTIO SRR %p deleted (id %d)\n",
4025 sctio, sctio->srr_id);
4026 list_del(&sctio->srr_list_entry);
4027 qlt_send_term_exchange(vha, sctio->cmd,
4028 &sctio->cmd->atio, 1);
4029 kfree(sctio);
4030 }
4031 }
4032 spin_unlock(&tgt->srr_lock);
4033 goto out_reject;
4034 }
4035
4036 return;
4037
4038out_reject:
4039 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
4040 NOTIFY_ACK_SRR_FLAGS_REJECT,
4041 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4042 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4043}
4044
4045/*
4046 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4047 */
4048static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4049 struct imm_ntfy_from_isp *iocb)
4050{
4051 struct qla_hw_data *ha = vha->hw;
4052 uint32_t add_flags = 0;
4053 int send_notify_ack = 1;
4054 uint16_t status;
4055
4056 status = le16_to_cpu(iocb->u.isp2x.status);
4057 switch (status) {
4058 case IMM_NTFY_LIP_RESET:
4059 {
4060 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4061 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4062 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4063 iocb->u.isp24.status_subcode);
4064
4065 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4066 send_notify_ack = 0;
4067 break;
4068 }
4069
4070 case IMM_NTFY_LIP_LINK_REINIT:
4071 {
0e8cd71c 4072 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4073 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4074 "qla_target(%d): LINK REINIT (loop %#x, "
4075 "subcode %x)\n", vha->vp_idx,
4076 le16_to_cpu(iocb->u.isp24.nport_handle),
4077 iocb->u.isp24.status_subcode);
4078 if (tgt->link_reinit_iocb_pending) {
4079 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4080 0, 0, 0, 0, 0, 0);
4081 }
4082 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4083 tgt->link_reinit_iocb_pending = 1;
4084 /*
4085 * QLogic requires to wait after LINK REINIT for possible
4086 * PDISC or ADISC ELS commands
4087 */
4088 send_notify_ack = 0;
4089 break;
4090 }
4091
4092 case IMM_NTFY_PORT_LOGOUT:
4093 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4094 "qla_target(%d): Port logout (loop "
4095 "%#x, subcode %x)\n", vha->vp_idx,
4096 le16_to_cpu(iocb->u.isp24.nport_handle),
4097 iocb->u.isp24.status_subcode);
4098
4099 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4100 send_notify_ack = 0;
4101 /* The sessions will be cleared in the callback, if needed */
4102 break;
4103
4104 case IMM_NTFY_GLBL_TPRLO:
4105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4106 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4107 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4108 send_notify_ack = 0;
4109 /* The sessions will be cleared in the callback, if needed */
4110 break;
4111
4112 case IMM_NTFY_PORT_CONFIG:
4113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4114 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4115 status);
4116 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4117 send_notify_ack = 0;
4118 /* The sessions will be cleared in the callback, if needed */
4119 break;
4120
4121 case IMM_NTFY_GLBL_LOGO:
4122 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4123 "qla_target(%d): Link failure detected\n",
4124 vha->vp_idx);
4125 /* I_T nexus loss */
4126 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4127 send_notify_ack = 0;
4128 break;
4129
4130 case IMM_NTFY_IOCB_OVERFLOW:
4131 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4132 "qla_target(%d): Cannot provide requested "
4133 "capability (IOCB overflowed the immediate notify "
4134 "resource count)\n", vha->vp_idx);
4135 break;
4136
4137 case IMM_NTFY_ABORT_TASK:
4138 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4139 "qla_target(%d): Abort Task (S %08x I %#x -> "
4140 "L %#x)\n", vha->vp_idx,
4141 le16_to_cpu(iocb->u.isp2x.seq_id),
4142 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4143 le16_to_cpu(iocb->u.isp2x.lun));
4144 if (qlt_abort_task(vha, iocb) == 0)
4145 send_notify_ack = 0;
4146 break;
4147
4148 case IMM_NTFY_RESOURCE:
4149 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4150 "qla_target(%d): Out of resources, host %ld\n",
4151 vha->vp_idx, vha->host_no);
4152 break;
4153
4154 case IMM_NTFY_MSG_RX:
4155 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4156 "qla_target(%d): Immediate notify task %x\n",
4157 vha->vp_idx, iocb->u.isp2x.task_flags);
4158 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4159 send_notify_ack = 0;
4160 break;
4161
4162 case IMM_NTFY_ELS:
4163 if (qlt_24xx_handle_els(vha, iocb) == 0)
4164 send_notify_ack = 0;
4165 break;
4166
4167 case IMM_NTFY_SRR:
4168 qlt_prepare_srr_imm(vha, iocb);
4169 send_notify_ack = 0;
4170 break;
4171
4172 default:
4173 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4174 "qla_target(%d): Received unknown immediate "
4175 "notify status %x\n", vha->vp_idx, status);
4176 break;
4177 }
4178
4179 if (send_notify_ack)
4180 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4181}
4182
4183/*
4184 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4185 * This function sends busy to ISP 2xxx or 24xx.
4186 */
4187static void qlt_send_busy(struct scsi_qla_host *vha,
4188 struct atio_from_isp *atio, uint16_t status)
4189{
4190 struct ctio7_to_24xx *ctio24;
4191 struct qla_hw_data *ha = vha->hw;
4192 request_t *pkt;
4193 struct qla_tgt_sess *sess = NULL;
4194
4195 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4196 atio->u.isp24.fcp_hdr.s_id);
4197 if (!sess) {
4198 qlt_send_term_exchange(vha, NULL, atio, 1);
4199 return;
4200 }
4201 /* Sending marker isn't necessary, since we called from ISR */
4202
4203 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4204 if (!pkt) {
667024a3 4205 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 4206 "qla_target(%d): %s failed: unable to allocate "
4207 "request packet", vha->vp_idx, __func__);
4208 return;
4209 }
4210
4211 pkt->entry_count = 1;
4212 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
4213
4214 ctio24 = (struct ctio7_to_24xx *)pkt;
4215 ctio24->entry_type = CTIO_TYPE7;
4216 ctio24->nport_handle = sess->loop_id;
4217 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
4218 ctio24->vp_index = vha->vp_idx;
4219 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
4220 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
4221 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
4222 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
4223 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
4224 __constant_cpu_to_le16(
4225 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
4226 CTIO7_FLAGS_DONT_RET_CTIO);
4227 /*
4228 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
4229 * if the explicit conformation is used.
4230 */
4231 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
4232 ctio24->u.status1.scsi_status = cpu_to_le16(status);
4233 ctio24->u.status1.residual = get_unaligned((uint32_t *)
4234 &atio->u.isp24.fcp_cmnd.add_cdb[
4235 atio->u.isp24.fcp_cmnd.add_cdb_len]);
4236 if (ctio24->u.status1.residual != 0)
4237 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
4238
4239 qla2x00_start_iocbs(vha, vha->req);
4240}
4241
4242/* ha->hardware_lock supposed to be held on entry */
4243/* called via callback from qla2xxx */
4244static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
4245 struct atio_from_isp *atio)
4246{
4247 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4248 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4249 int rc;
4250
4251 if (unlikely(tgt == NULL)) {
667024a3 4252 ql_dbg(ql_dbg_io, vha, 0x3064,
2d70c103
NB		 4253 "ATIO pkt, but no tgt (ha %p)", ha);
4254 return;
4255 }
2d70c103
NB		 4256 /*
4257 * In tgt_stop mode we also should allow all requests to pass.
4258 * Otherwise, some commands can stuck.
4259 */
4260
4261 tgt->irq_cmd_count++;
4262
4263 switch (atio->u.raw.entry_type) {
4264 case ATIO_TYPE7:
2d70c103
NB		 4265 if (unlikely(atio->u.isp24.exchange_addr ==
4266 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 4267 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 4268 "qla_target(%d): ATIO_TYPE7 "
4269 "received with UNKNOWN exchange address, "
4270 "sending QUEUE_FULL\n", vha->vp_idx);
4271 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
4272 break;
4273 }
4274 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
4275 rc = qlt_handle_cmd_for_atio(vha, atio);
4276 else
4277 rc = qlt_handle_task_mgmt(vha, atio);
4278 if (unlikely(rc != 0)) {
4279 if (rc == -ESRCH) {
4280#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4281 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4282#else
4283 qlt_send_term_exchange(vha, NULL, atio, 1);
4284#endif
4285 } else {
4286 if (tgt->tgt_stop) {
4287 ql_dbg(ql_dbg_tgt, vha, 0xe059,
4288 "qla_target: Unable to send "
4289 "command to target for req, "
4290 "ignoring.\n");
4291 } else {
4292 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
4293 "qla_target(%d): Unable to send "
4294 "command to target, sending BUSY "
4295 "status.\n", vha->vp_idx);
4296 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4297 }
4298 }
4299 }
4300 break;
4301
4302 case IMMED_NOTIFY_TYPE:
4303 {
4304 if (unlikely(atio->u.isp2x.entry_status != 0)) {
4305 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
4306 "qla_target(%d): Received ATIO packet %x "
4307 "with error status %x\n", vha->vp_idx,
4308 atio->u.raw.entry_type,
4309 atio->u.isp2x.entry_status);
4310 break;
4311 }
4312 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
4313 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
4314 break;
4315 }
4316
4317 default:
4318 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
4319 "qla_target(%d): Received unknown ATIO atio "
4320 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
4321 break;
4322 }
4323
4324 tgt->irq_cmd_count--;
4325}
4326
4327/* ha->hardware_lock supposed to be held on entry */
4328/* called via callback from qla2xxx */
4329static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
4330{
4331 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4332 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4333
4334 if (unlikely(tgt == NULL)) {
4335 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
4336 "qla_target(%d): Response pkt %x received, but no "
4337 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
4338 return;
4339 }
4340
2d70c103
NB		 4341 /*
4342 * In tgt_stop mode we also should allow all requests to pass.
4343 * Otherwise, some commands can stuck.
4344 */
4345
4346 tgt->irq_cmd_count++;
4347
4348 switch (pkt->entry_type) {
f83adb61 4349 case CTIO_CRC2:
2d70c103
NB		 4350 case CTIO_TYPE7:
4351 {
4352 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
2d70c103
NB		 4353 qlt_do_ctio_completion(vha, entry->handle,
4354 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4355 entry);
4356 break;
4357 }
4358
4359 case ACCEPT_TGT_IO_TYPE:
4360 {
4361 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
4362 int rc;
2d70c103
NB		 4363 if (atio->u.isp2x.status !=
4364 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
4365 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
4366 "qla_target(%d): ATIO with error "
4367 "status %x received\n", vha->vp_idx,
4368 le16_to_cpu(atio->u.isp2x.status));
4369 break;
4370 }
2d70c103
NB		 4371
4372 rc = qlt_handle_cmd_for_atio(vha, atio);
4373 if (unlikely(rc != 0)) {
4374 if (rc == -ESRCH) {
4375#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4376 qlt_send_busy(vha, atio, 0);
4377#else
4378 qlt_send_term_exchange(vha, NULL, atio, 1);
4379#endif
4380 } else {
4381 if (tgt->tgt_stop) {
4382 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
4383 "qla_target: Unable to send "
4384 "command to target, sending TERM "
4385 "EXCHANGE for rsp\n");
4386 qlt_send_term_exchange(vha, NULL,
4387 atio, 1);
4388 } else {
4389 ql_dbg(ql_dbg_tgt, vha, 0xe060,
4390 "qla_target(%d): Unable to send "
4391 "command to target, sending BUSY "
4392 "status\n", vha->vp_idx);
4393 qlt_send_busy(vha, atio, 0);
4394 }
4395 }
4396 }
4397 }
4398 break;
4399
4400 case CONTINUE_TGT_IO_TYPE:
4401 {
4402 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 4403 qlt_do_ctio_completion(vha, entry->handle,
4404 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4405 entry);
4406 break;
4407 }
4408
4409 case CTIO_A64_TYPE:
4410 {
4411 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 4412 qlt_do_ctio_completion(vha, entry->handle,
4413 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4414 entry);
4415 break;
4416 }
4417
4418 case IMMED_NOTIFY_TYPE:
4419 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
4420 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
4421 break;
4422
4423 case NOTIFY_ACK_TYPE:
4424 if (tgt->notify_ack_expected > 0) {
4425 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
4426 ql_dbg(ql_dbg_tgt, vha, 0xe036,
4427 "NOTIFY_ACK seq %08x status %x\n",
4428 le16_to_cpu(entry->u.isp2x.seq_id),
4429 le16_to_cpu(entry->u.isp2x.status));
4430 tgt->notify_ack_expected--;
4431 if (entry->u.isp2x.status !=
4432 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
4433 ql_dbg(ql_dbg_tgt, vha, 0xe061,
4434 "qla_target(%d): NOTIFY_ACK "
4435 "failed %x\n", vha->vp_idx,
4436 le16_to_cpu(entry->u.isp2x.status));
4437 }
4438 } else {
4439 ql_dbg(ql_dbg_tgt, vha, 0xe062,
4440 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
4441 vha->vp_idx);
4442 }
4443 break;
4444
4445 case ABTS_RECV_24XX:
4446 ql_dbg(ql_dbg_tgt, vha, 0xe037,
4447 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
4448 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
4449 break;
4450
4451 case ABTS_RESP_24XX:
4452 if (tgt->abts_resp_expected > 0) {
4453 struct abts_resp_from_24xx_fw *entry =
4454 (struct abts_resp_from_24xx_fw *)pkt;
4455 ql_dbg(ql_dbg_tgt, vha, 0xe038,
4456 "ABTS_RESP_24XX: compl_status %x\n",
4457 entry->compl_status);
4458 tgt->abts_resp_expected--;
4459 if (le16_to_cpu(entry->compl_status) !=
4460 ABTS_RESP_COMPL_SUCCESS) {
4461 if ((entry->error_subcode1 == 0x1E) &&
4462 (entry->error_subcode2 == 0)) {
4463 /*
4464 * We've got a race here: aborted
4465 * exchange not terminated, i.e.
4466 * response for the aborted command was
4467 * sent between the abort request was
4468 * received and processed.
4469 * Unfortunately, the firmware has a
4470 * silly requirement that all aborted
4471 * exchanges must be explicitely
4472 * terminated, otherwise it refuses to
4473 * send responses for the abort
4474 * requests. So, we have to
4475 * (re)terminate the exchange and retry
4476 * the abort response.
4477 */
4478 qlt_24xx_retry_term_exchange(vha,
4479 entry);
4480 } else
4481 ql_dbg(ql_dbg_tgt, vha, 0xe063,
4482 "qla_target(%d): ABTS_RESP_24XX "
4483 "failed %x (subcode %x:%x)",
4484 vha->vp_idx, entry->compl_status,
4485 entry->error_subcode1,
4486 entry->error_subcode2);
4487 }
4488 } else {
4489 ql_dbg(ql_dbg_tgt, vha, 0xe064,
4490 "qla_target(%d): Unexpected ABTS_RESP_24XX "
4491 "received\n", vha->vp_idx);
4492 }
4493 break;
4494
4495 default:
4496 ql_dbg(ql_dbg_tgt, vha, 0xe065,
4497 "qla_target(%d): Received unknown response pkt "
4498 "type %x\n", vha->vp_idx, pkt->entry_type);
4499 break;
4500 }
4501
4502 tgt->irq_cmd_count--;
4503}
4504
4505/*
4506 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4507 */
4508void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
4509 uint16_t *mailbox)
4510{
4511 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4512 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 4513 int login_code;
2d70c103 4514
2d70c103
NB		 4515 if (!ha->tgt.tgt_ops)
4516 return;
4517
4518 if (unlikely(tgt == NULL)) {
4519 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
4520 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
4521 return;
4522 }
4523
4524 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
4525 IS_QLA2100(ha))
4526 return;
4527 /*
4528 * In tgt_stop mode we also should allow all requests to pass.
4529 * Otherwise, some commands can stuck.
4530 */
4531
4532 tgt->irq_cmd_count++;
4533
4534 switch (code) {
4535 case MBA_RESET: /* Reset */
4536 case MBA_SYSTEM_ERR: /* System Error */
4537 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
4538 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
4539 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
4540 "qla_target(%d): System error async event %#x "
6efb3c0a 4541 "occurred", vha->vp_idx, code);
2d70c103
NB		 4542 break;
4543 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
4544 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4545 break;
4546
4547 case MBA_LOOP_UP:
4548 {
4549 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 4550 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 4551 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4552 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4553 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4554 if (tgt->link_reinit_iocb_pending) {
4555 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
4556 0, 0, 0, 0, 0, 0);
4557 tgt->link_reinit_iocb_pending = 0;
4558 }
4559 break;
4560 }
4561
4562 case MBA_LIP_OCCURRED:
4563 case MBA_LOOP_DOWN:
4564 case MBA_LIP_RESET:
4565 case MBA_RSCN_UPDATE:
4566 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 4567 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 4568 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4569 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4570 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4571 break;
4572
4573 case MBA_PORT_UPDATE:
4574 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
4575 "qla_target(%d): Port update async event %#x "
6efb3c0a 4576 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 4577 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4578 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4579 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
4580
4581 login_code = le16_to_cpu(mailbox[2]);
4582 if (login_code == 0x4)
2d70c103
NB		 4583 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
4584 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 4585 else if (login_code == 0x7)
2d70c103
NB		 4586 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
4587 "Async MB 2: Port Logged Out\n");
4588 break;
4589
4590 default:
2d70c103
NB		 4591 break;
4592 }
4593
4594 tgt->irq_cmd_count--;
4595}
4596
4597static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
4598 uint16_t loop_id)
4599{
4600 fc_port_t *fcport;
4601 int rc;
4602
4603 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
4604 if (!fcport) {
4605 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
4606 "qla_target(%d): Allocation of tmp FC port failed",
4607 vha->vp_idx);
4608 return NULL;
4609 }
4610
2d70c103
NB		 4611 fcport->loop_id = loop_id;
4612
4613 rc = qla2x00_get_port_database(vha, fcport, 0);
4614 if (rc != QLA_SUCCESS) {
4615 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
4616 "qla_target(%d): Failed to retrieve fcport "
4617 "information -- get_port_database() returned %x "
4618 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
4619 kfree(fcport);
4620 return NULL;
4621 }
4622
4623 return fcport;
4624}
4625
4626/* Must be called under tgt_mutex */
4627static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
4628 uint8_t *s_id)
4629{
2d70c103
NB		 4630 struct qla_tgt_sess *sess = NULL;
4631 fc_port_t *fcport = NULL;
4632 int rc, global_resets;
4633 uint16_t loop_id = 0;
4634
4635retry:
0e8cd71c
SK		 4636 global_resets =
4637 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 4638
4639 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
4640 if (rc != 0) {
4641 if ((s_id[0] == 0xFF) &&
4642 (s_id[1] == 0xFC)) {
4643 /*
4644 * This is Domain Controller, so it should be
4645 * OK to drop SCSI commands from it.
4646 */
4647 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
4648 "Unable to find initiator with S_ID %x:%x:%x",
4649 s_id[0], s_id[1], s_id[2]);
4650 } else
4651 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
4652 "qla_target(%d): Unable to find "
4653 "initiator with S_ID %x:%x:%x",
4654 vha->vp_idx, s_id[0], s_id[1],
4655 s_id[2]);
4656 return NULL;
4657 }
4658
4659 fcport = qlt_get_port_database(vha, loop_id);
4660 if (!fcport)
4661 return NULL;
4662
4663 if (global_resets !=
0e8cd71c 4664 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 4665 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
4666 "qla_target(%d): global reset during session discovery "
4667 "(counter was %d, new %d), retrying", vha->vp_idx,
4668 global_resets,
0e8cd71c
SK		 4669 atomic_read(&vha->vha_tgt.
4670 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 4671 goto retry;
4672 }
4673
4674 sess = qlt_create_sess(vha, fcport, true);
4675
4676 kfree(fcport);
4677 return sess;
4678}
4679
4680static void qlt_abort_work(struct qla_tgt *tgt,
4681 struct qla_tgt_sess_work_param *prm)
4682{
4683 struct scsi_qla_host *vha = tgt->vha;
4684 struct qla_hw_data *ha = vha->hw;
4685 struct qla_tgt_sess *sess = NULL;
4686 unsigned long flags;
4687 uint32_t be_s_id;
4688 uint8_t s_id[3];
4689 int rc;
4690
4691 spin_lock_irqsave(&ha->hardware_lock, flags);
4692
4693 if (tgt->tgt_stop)
4694 goto out_term;
4695
4696 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
4697 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
4698 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
4699
4700 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4701 (unsigned char *)&be_s_id);
4702 if (!sess) {
4703 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4704
0e8cd71c 4705 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4706 sess = qlt_make_local_sess(vha, s_id);
4707 /* sess has got an extra creation ref */
0e8cd71c 4708 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4709
4710 spin_lock_irqsave(&ha->hardware_lock, flags);
4711 if (!sess)
4712 goto out_term;
4713 } else {
4714 kref_get(&sess->se_sess->sess_kref);
4715 }
4716
4717 if (tgt->tgt_stop)
4718 goto out_term;
4719
4720 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4721 if (rc != 0)
4722 goto out_term;
2d70c103
NB		 4723
4724 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4725 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4726 return;
4727
4728out_term:
4729 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
2d70c103
NB		 4730 if (sess)
4731 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4732 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4733}
4734
4735static void qlt_tmr_work(struct qla_tgt *tgt,
4736 struct qla_tgt_sess_work_param *prm)
4737{
4738 struct atio_from_isp *a = &prm->tm_iocb2;
4739 struct scsi_qla_host *vha = tgt->vha;
4740 struct qla_hw_data *ha = vha->hw;
4741 struct qla_tgt_sess *sess = NULL;
4742 unsigned long flags;
4743 uint8_t *s_id = NULL; /* to hide compiler warnings */
4744 int rc;
4745 uint32_t lun, unpacked_lun;
4746 int lun_size, fn;
4747 void *iocb;
4748
4749 spin_lock_irqsave(&ha->hardware_lock, flags);
4750
4751 if (tgt->tgt_stop)
4752 goto out_term;
4753
4754 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4755 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4756 if (!sess) {
4757 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4758
0e8cd71c 4759 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4760 sess = qlt_make_local_sess(vha, s_id);
4761 /* sess has got an extra creation ref */
0e8cd71c 4762 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4763
4764 spin_lock_irqsave(&ha->hardware_lock, flags);
4765 if (!sess)
4766 goto out_term;
4767 } else {
4768 kref_get(&sess->se_sess->sess_kref);
4769 }
4770
4771 iocb = a;
4772 lun = a->u.isp24.fcp_cmnd.lun;
4773 lun_size = sizeof(lun);
4774 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4775 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4776
4777 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4778 if (rc != 0)
4779 goto out_term;
2d70c103
NB		 4780
4781 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4782 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4783 return;
4784
4785out_term:
4786 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
2d70c103
NB		 4787 if (sess)
4788 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4789 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4790}
4791
4792static void qlt_sess_work_fn(struct work_struct *work)
4793{
4794 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4795 struct scsi_qla_host *vha = tgt->vha;
4796 unsigned long flags;
4797
4798 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4799
4800 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4801 while (!list_empty(&tgt->sess_works_list)) {
4802 struct qla_tgt_sess_work_param *prm = list_entry(
4803 tgt->sess_works_list.next, typeof(*prm),
4804 sess_works_list_entry);
4805
4806 /*
4807 * This work can be scheduled on several CPUs at time, so we
4808 * must delete the entry to eliminate double processing
4809 */
4810 list_del(&prm->sess_works_list_entry);
4811
4812 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4813
4814 switch (prm->type) {
4815 case QLA_TGT_SESS_WORK_ABORT:
4816 qlt_abort_work(tgt, prm);
4817 break;
4818 case QLA_TGT_SESS_WORK_TM:
4819 qlt_tmr_work(tgt, prm);
4820 break;
4821 default:
4822 BUG_ON(1);
4823 break;
4824 }
4825
4826 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4827
4828 kfree(prm);
4829 }
4830 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4831}
4832
4833/* Must be called under tgt_host_action_mutex */
4834int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4835{
4836 struct qla_tgt *tgt;
4837
4838 if (!QLA_TGT_MODE_ENABLED())
4839 return 0;
4840
33c36c0a
AE		 4841 if (!IS_TGT_MODE_CAPABLE(ha)) {
4842 ql_log(ql_log_warn, base_vha, 0xe070,
4843 "This adapter does not support target mode.\n");
4844 return 0;
4845 }
4846
2d70c103 4847 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 4848 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 4849
0e8cd71c 4850 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 4851
4852 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4853 if (!tgt) {
4854 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4855 "Unable to allocate struct qla_tgt\n");
4856 return -ENOMEM;
4857 }
4858
4859 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4860 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4861
4862 tgt->ha = ha;
4863 tgt->vha = base_vha;
4864 init_waitqueue_head(&tgt->waitQ);
4865 INIT_LIST_HEAD(&tgt->sess_list);
4866 INIT_LIST_HEAD(&tgt->del_sess_list);
4867 INIT_DELAYED_WORK(&tgt->sess_del_work,
4868 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4869 spin_lock_init(&tgt->sess_work_lock);
4870 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4871 INIT_LIST_HEAD(&tgt->sess_works_list);
4872 spin_lock_init(&tgt->srr_lock);
4873 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4874 INIT_LIST_HEAD(&tgt->srr_imm_list);
4875 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4876 atomic_set(&tgt->tgt_global_resets_count, 0);
4877
0e8cd71c 4878 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 4879
4880 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4881 "qla_target(%d): using 64 Bit PCI addressing",
4882 base_vha->vp_idx);
4883 tgt->tgt_enable_64bit_addr = 1;
4884 /* 3 is reserved */
4885 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4886 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4887 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4888
ddb95145
NB		 4889 if (base_vha->fc_vport)
4890 return 0;
4891
2d70c103
NB		 4892 mutex_lock(&qla_tgt_mutex);
4893 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4894 mutex_unlock(&qla_tgt_mutex);
4895
4896 return 0;
4897}
4898
4899/* Must be called under tgt_host_action_mutex */
4900int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4901{
0e8cd71c 4902 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 4903 return 0;
4904
ddb95145
NB		 4905 if (vha->fc_vport) {
4906 qlt_release(vha->vha_tgt.qla_tgt);
4907 return 0;
4908 }
2d70c103 4909 mutex_lock(&qla_tgt_mutex);
0e8cd71c 4910 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 4911 mutex_unlock(&qla_tgt_mutex);
4912
4913 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4914 vha->host_no, ha);
0e8cd71c 4915 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 4916
4917 return 0;
4918}
4919
4920static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4921 unsigned char *b)
4922{
4923 int i;
4924
4925 pr_debug("qla2xxx HW vha->node_name: ");
4926 for (i = 0; i < WWN_SIZE; i++)
4927 pr_debug("%02x ", vha->node_name[i]);
4928 pr_debug("\n");
4929 pr_debug("qla2xxx HW vha->port_name: ");
4930 for (i = 0; i < WWN_SIZE; i++)
4931 pr_debug("%02x ", vha->port_name[i]);
4932 pr_debug("\n");
4933
4934 pr_debug("qla2xxx passed configfs WWPN: ");
4935 put_unaligned_be64(wwpn, b);
4936 for (i = 0; i < WWN_SIZE; i++)
4937 pr_debug("%02x ", b[i]);
4938 pr_debug("\n");
4939}
4940
4941/**
4942 * qla_tgt_lport_register - register lport with external module
4943 *
4944 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4945 * @wwpn: Passwd FC target WWPN
4946 * @callback: lport initialization callback for tcm_qla2xxx code
4947 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4948 */
49a47f2c
NB		 4949int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
4950 u64 npiv_wwpn, u64 npiv_wwnn,
4951 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 4952{
4953 struct qla_tgt *tgt;
4954 struct scsi_qla_host *vha;
4955 struct qla_hw_data *ha;
4956 struct Scsi_Host *host;
4957 unsigned long flags;
4958 int rc;
4959 u8 b[WWN_SIZE];
4960
4961 mutex_lock(&qla_tgt_mutex);
4962 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4963 vha = tgt->vha;
4964 ha = vha->hw;
4965
4966 host = vha->host;
4967 if (!host)
4968 continue;
4969
2d70c103
NB		 4970 if (!(host->hostt->supported_mode & MODE_TARGET))
4971 continue;
4972
4973 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 4974 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 4975 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4976 host->host_no);
4977 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4978 continue;
4979 }
ddb95145
NB		 4980 if (tgt->tgt_stop) {
4981 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
4982 host->host_no);
4983 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4984 continue;
4985 }
2d70c103
NB		 4986 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4987
4988 if (!scsi_host_get(host)) {
4989 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4990 "Unable to scsi_host_get() for"
4991 " qla2xxx scsi_host\n");
4992 continue;
4993 }
49a47f2c 4994 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 4995
4996 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4997 scsi_host_put(host);
4998 continue;
4999 }
49a47f2c
NB		 5000 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
5001 if (rc != 0)
5002 scsi_host_put(host);
5003
ddb95145 5004 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 5005 return rc;
5006 }
5007 mutex_unlock(&qla_tgt_mutex);
5008
5009 return -ENODEV;
5010}
5011EXPORT_SYMBOL(qlt_lport_register);
5012
5013/**
5014 * qla_tgt_lport_deregister - Degister lport
5015 *
5016 * @vha: Registered scsi_qla_host pointer
5017 */
5018void qlt_lport_deregister(struct scsi_qla_host *vha)
5019{
5020 struct qla_hw_data *ha = vha->hw;
5021 struct Scsi_Host *sh = vha->host;
5022 /*
5023 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
5024 */
0e8cd71c 5025 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 5026 ha->tgt.tgt_ops = NULL;
5027 /*
5028 * Release the Scsi_Host reference for the underlying qla2xxx host
5029 */
5030 scsi_host_put(sh);
5031}
5032EXPORT_SYMBOL(qlt_lport_deregister);
5033
5034/* Must be called under HW lock */
5035void qlt_set_mode(struct scsi_qla_host *vha)
5036{
5037 struct qla_hw_data *ha = vha->hw;
5038
5039 switch (ql2x_ini_mode) {
5040 case QLA2XXX_INI_MODE_DISABLED:
5041 case QLA2XXX_INI_MODE_EXCLUSIVE:
5042 vha->host->active_mode = MODE_TARGET;
5043 break;
5044 case QLA2XXX_INI_MODE_ENABLED:
5045 vha->host->active_mode |= MODE_TARGET;
5046 break;
5047 default:
5048 break;
5049 }
5050
5051 if (ha->tgt.ini_mode_force_reverse)
5052 qla_reverse_ini_mode(vha);
5053}
5054
5055/* Must be called under HW lock */
5056void qlt_clear_mode(struct scsi_qla_host *vha)
5057{
5058 struct qla_hw_data *ha = vha->hw;
5059
5060 switch (ql2x_ini_mode) {
5061 case QLA2XXX_INI_MODE_DISABLED:
5062 vha->host->active_mode = MODE_UNKNOWN;
5063 break;
5064 case QLA2XXX_INI_MODE_EXCLUSIVE:
5065 vha->host->active_mode = MODE_INITIATOR;
5066 break;
5067 case QLA2XXX_INI_MODE_ENABLED:
5068 vha->host->active_mode &= ~MODE_TARGET;
5069 break;
5070 default:
5071 break;
5072 }
5073
5074 if (ha->tgt.ini_mode_force_reverse)
5075 qla_reverse_ini_mode(vha);
5076}
5077
5078/*
5079 * qla_tgt_enable_vha - NO LOCK HELD
5080 *
5081 * host_reset, bring up w/ Target Mode Enabled
5082 */
5083void
5084qlt_enable_vha(struct scsi_qla_host *vha)
5085{
5086 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5087 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5088 unsigned long flags;
0e8cd71c 5089 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 5090
5091 if (!tgt) {
5092 ql_dbg(ql_dbg_tgt, vha, 0xe069,
5093 "Unable to locate qla_tgt pointer from"
5094 " struct qla_hw_data\n");
5095 dump_stack();
5096 return;
5097 }
5098
5099 spin_lock_irqsave(&ha->hardware_lock, flags);
5100 tgt->tgt_stopped = 0;
5101 qlt_set_mode(vha);
5102 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5103
0e8cd71c
SK		 5104 if (vha->vp_idx) {
5105 qla24xx_disable_vp(vha);
5106 qla24xx_enable_vp(vha);
5107 } else {
5108 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
5109 qla2xxx_wake_dpc(base_vha);
5110 qla2x00_wait_for_hba_online(base_vha);
5111 }
2d70c103
NB		 5112}
5113EXPORT_SYMBOL(qlt_enable_vha);
5114
5115/*
5116 * qla_tgt_disable_vha - NO LOCK HELD
5117 *
5118 * Disable Target Mode and reset the adapter
5119 */
5120void
5121qlt_disable_vha(struct scsi_qla_host *vha)
5122{
5123 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5124 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5125 unsigned long flags;
5126
5127 if (!tgt) {
5128 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
5129 "Unable to locate qla_tgt pointer from"
5130 " struct qla_hw_data\n");
5131 dump_stack();
5132 return;
5133 }
5134
5135 spin_lock_irqsave(&ha->hardware_lock, flags);
5136 qlt_clear_mode(vha);
5137 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5138
5139 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5140 qla2xxx_wake_dpc(vha);
5141 qla2x00_wait_for_hba_online(vha);
5142}
5143
5144/*
5145 * Called from qla_init.c:qla24xx_vport_create() contex to setup
5146 * the target mode specific struct scsi_qla_host and struct qla_hw_data
5147 * members.
5148 */
5149void
5150qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
5151{
5152 if (!qla_tgt_mode_enabled(vha))
5153 return;
5154
0e8cd71c
SK		 5155 vha->vha_tgt.qla_tgt = NULL;
5156
5157 mutex_init(&vha->vha_tgt.tgt_mutex);
5158 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5159
5160 qlt_clear_mode(vha);
5161
5162 /*
5163 * NOTE: Currently the value is kept the same for <24xx and
5164 * >=24xx ISPs. If it is necessary to change it,
5165 * the check should be added for specific ISPs,
5166 * assigning the value appropriately.
5167 */
5168 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 5169
5170 qlt_add_target(ha, vha);
2d70c103
NB		 5171}
5172
5173void
5174qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
5175{
5176 /*
5177 * FC-4 Feature bit 0 indicates target functionality to the name server.
5178 */
5179 if (qla_tgt_mode_enabled(vha)) {
5180 if (qla_ini_mode_enabled(vha))
5181 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
5182 else
5183 ct_req->req.rff_id.fc4_feature = BIT_0;
5184 } else if (qla_ini_mode_enabled(vha)) {
5185 ct_req->req.rff_id.fc4_feature = BIT_1;
5186 }
5187}
5188
5189/*
5190 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
5191 * @ha: HA context
5192 *
5193 * Beginning of ATIO ring has initialization control block already built
5194 * by nvram config routine.
5195 *
5196 * Returns 0 on success.
5197 */
5198void
5199qlt_init_atio_q_entries(struct scsi_qla_host *vha)
5200{
5201 struct qla_hw_data *ha = vha->hw;
5202 uint16_t cnt;
5203 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
5204
5205 if (!qla_tgt_mode_enabled(vha))
5206 return;
5207
5208 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
5209 pkt->u.raw.signature = ATIO_PROCESSED;
5210 pkt++;
5211 }
5212
5213}
5214
5215/*
5216 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
5217 * @ha: SCSI driver HA context
5218 */
5219void
5220qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
5221{
5222 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 5223 struct atio_from_isp *pkt;
5224 int cnt, i;
5225
5226 if (!vha->flags.online)
5227 return;
5228
5229 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
5230 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5231 cnt = pkt->u.raw.entry_count;
5232
5233 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
5234
5235 for (i = 0; i < cnt; i++) {
5236 ha->tgt.atio_ring_index++;
5237 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
5238 ha->tgt.atio_ring_index = 0;
5239 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
5240 } else
5241 ha->tgt.atio_ring_ptr++;
5242
5243 pkt->u.raw.signature = ATIO_PROCESSED;
5244 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5245 }
5246 wmb();
5247 }
5248
5249 /* Adjust ring index */
aa230bc5 5250 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 5251}
5252
5253void
aa230bc5 5254qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 5255{
5256 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 5257 if (!QLA_TGT_MODE_ENABLED())
5258 return;
2d70c103 5259
aa230bc5
AE		 5260 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
5261 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
5262 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
5263
5264 if (IS_ATIO_MSIX_CAPABLE(ha)) {
5265 struct qla_msix_entry *msix = &ha->msix_entries[2];
5266 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
5267
5268 icb->msix_atio = cpu_to_le16(msix->entry);
5269 ql_dbg(ql_dbg_init, vha, 0xf072,
5270 "Registering ICB vector 0x%x for atio que.\n",
5271 msix->entry);
2d70c103
NB		 5272 }
5273}
5274
5275void
5276qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
5277{
5278 struct qla_hw_data *ha = vha->hw;
5279
5280 if (qla_tgt_mode_enabled(vha)) {
5281 if (!ha->tgt.saved_set) {
5282 /* We save only once */
5283 ha->tgt.saved_exchange_count = nv->exchange_count;
5284 ha->tgt.saved_firmware_options_1 =
5285 nv->firmware_options_1;
5286 ha->tgt.saved_firmware_options_2 =
5287 nv->firmware_options_2;
5288 ha->tgt.saved_firmware_options_3 =
5289 nv->firmware_options_3;
5290 ha->tgt.saved_set = 1;
5291 }
5292
5293 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5294
5295 /* Enable target mode */
5296 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5297
5298 /* Disable ini mode, if requested */
5299 if (!qla_ini_mode_enabled(vha))
5300 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
5301
5302 /* Disable Full Login after LIP */
5303 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5304 /* Enable initial LIP */
5305 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
d154f350
AE		 5306 if (ql2xtgt_tape_enable)
5307 /* Enable FC Tape support */
5308 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
5309 else
5310 /* Disable FC Tape support */
5311 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
5312
2d70c103
NB		 5313 /* Disable Full Login after LIP */
5314 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5315 /* Enable target PRLI control */
5316 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5317 } else {
5318 if (ha->tgt.saved_set) {
5319 nv->exchange_count = ha->tgt.saved_exchange_count;
5320 nv->firmware_options_1 =
5321 ha->tgt.saved_firmware_options_1;
5322 nv->firmware_options_2 =
5323 ha->tgt.saved_firmware_options_2;
5324 nv->firmware_options_3 =
5325 ha->tgt.saved_firmware_options_3;
5326 }
5327 return;
5328 }
5329
5330 /* out-of-order frames reassembly */
5331 nv->firmware_options_3 |= BIT_6|BIT_9;
5332
5333 if (ha->tgt.enable_class_2) {
5334 if (vha->flags.init_done)
5335 fc_host_supported_classes(vha->host) =
5336 FC_COS_CLASS2 | FC_COS_CLASS3;
5337
5338 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5339 } else {
5340 if (vha->flags.init_done)
5341 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5342
5343 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5344 }
5345}
5346
5347void
5348qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
5349 struct init_cb_24xx *icb)
5350{
5351 struct qla_hw_data *ha = vha->hw;
5352
5353 if (ha->tgt.node_name_set) {
5354 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5355 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5356 }
5357}
5358
aa230bc5
AE		 5359void
5360qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
5361{
5362 struct qla_hw_data *ha = vha->hw;
5363
5364 if (!QLA_TGT_MODE_ENABLED())
5365 return;
5366
5367 if (qla_tgt_mode_enabled(vha)) {
5368 if (!ha->tgt.saved_set) {
5369 /* We save only once */
5370 ha->tgt.saved_exchange_count = nv->exchange_count;
5371 ha->tgt.saved_firmware_options_1 =
5372 nv->firmware_options_1;
5373 ha->tgt.saved_firmware_options_2 =
5374 nv->firmware_options_2;
5375 ha->tgt.saved_firmware_options_3 =
5376 nv->firmware_options_3;
5377 ha->tgt.saved_set = 1;
5378 }
5379
5380 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5381
5382 /* Enable target mode */
5383 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5384
5385 /* Disable ini mode, if requested */
5386 if (!qla_ini_mode_enabled(vha))
5387 nv->firmware_options_1 |=
5388 __constant_cpu_to_le32(BIT_5);
5389
5390 /* Disable Full Login after LIP */
5391 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5392 /* Enable initial LIP */
5393 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
d154f350
AE		 5394 if (ql2xtgt_tape_enable)
5395 /* Enable FC tape support */
5396 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
5397 else
5398 /* Disable FC tape support */
5399 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
5400
aa230bc5
AE		 5401 /* Disable Full Login after LIP */
5402 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5403 /* Enable target PRLI control */
5404 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5405 } else {
5406 if (ha->tgt.saved_set) {
5407 nv->exchange_count = ha->tgt.saved_exchange_count;
5408 nv->firmware_options_1 =
5409 ha->tgt.saved_firmware_options_1;
5410 nv->firmware_options_2 =
5411 ha->tgt.saved_firmware_options_2;
5412 nv->firmware_options_3 =
5413 ha->tgt.saved_firmware_options_3;
5414 }
5415 return;
5416 }
5417
5418 /* out-of-order frames reassembly */
5419 nv->firmware_options_3 |= BIT_6|BIT_9;
5420
5421 if (ha->tgt.enable_class_2) {
5422 if (vha->flags.init_done)
5423 fc_host_supported_classes(vha->host) =
5424 FC_COS_CLASS2 | FC_COS_CLASS3;
5425
5426 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5427 } else {
5428 if (vha->flags.init_done)
5429 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5430
5431 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5432 }
5433}
5434
5435void
5436qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
5437 struct init_cb_81xx *icb)
5438{
5439 struct qla_hw_data *ha = vha->hw;
5440
5441 if (!QLA_TGT_MODE_ENABLED())
5442 return;
5443
5444 if (ha->tgt.node_name_set) {
5445 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5446 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5447 }
5448}
5449
5450void
5451qlt_83xx_iospace_config(struct qla_hw_data *ha)
5452{
5453 if (!QLA_TGT_MODE_ENABLED())
5454 return;
5455
5456 ha->msix_count += 1; /* For ATIO Q */
5457}
5458
2d70c103
NB		 5459int
5460qlt_24xx_process_response_error(struct scsi_qla_host *vha,
5461 struct sts_entry_24xx *pkt)
5462{
5463 switch (pkt->entry_type) {
5464 case ABTS_RECV_24XX:
5465 case ABTS_RESP_24XX:
5466 case CTIO_TYPE7:
5467 case NOTIFY_ACK_TYPE:
f83adb61 5468 case CTIO_CRC2:
2d70c103
NB		 5469 return 1;
5470 default:
5471 return 0;
5472 }
5473}
5474
5475void
5476qlt_modify_vp_config(struct scsi_qla_host *vha,
5477 struct vp_config_entry_24xx *vpmod)
5478{
5479 if (qla_tgt_mode_enabled(vha))
5480 vpmod->options_idx1 &= ~BIT_5;
5481 /* Disable ini mode, if requested */
5482 if (!qla_ini_mode_enabled(vha))
5483 vpmod->options_idx1 &= ~BIT_4;
5484}
5485
5486void
5487qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
5488{
5489 if (!QLA_TGT_MODE_ENABLED())
5490 return;
5491
aa230bc5
AE		 5492 if (ha->mqenable || IS_QLA83XX(ha)) {
5493 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
5494 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
5495 } else {
5496 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
5497 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
5498 }
5499
0e8cd71c
SK		 5500 mutex_init(&base_vha->vha_tgt.tgt_mutex);
5501 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5502 qlt_clear_mode(base_vha);
5503}
5504
aa230bc5
AE		 5505irqreturn_t
5506qla83xx_msix_atio_q(int irq, void *dev_id)
5507{
5508 struct rsp_que *rsp;
5509 scsi_qla_host_t *vha;
5510 struct qla_hw_data *ha;
5511 unsigned long flags;
5512
5513 rsp = (struct rsp_que *) dev_id;
5514 ha = rsp->hw;
5515 vha = pci_get_drvdata(ha->pdev);
5516
5517 spin_lock_irqsave(&ha->hardware_lock, flags);
5518
5519 qlt_24xx_process_atio_queue(vha);
5520 qla24xx_process_response_queue(vha, rsp);
5521
5522 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5523
5524 return IRQ_HANDLED;
5525}
5526
2d70c103
NB		 5527int
5528qlt_mem_alloc(struct qla_hw_data *ha)
5529{
5530 if (!QLA_TGT_MODE_ENABLED())
5531 return 0;
5532
5533 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
5534 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
5535 if (!ha->tgt.tgt_vp_map)
5536 return -ENOMEM;
5537
5538 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
5539 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
5540 &ha->tgt.atio_dma, GFP_KERNEL);
5541 if (!ha->tgt.atio_ring) {
5542 kfree(ha->tgt.tgt_vp_map);
5543 return -ENOMEM;
5544 }
5545 return 0;
5546}
5547
5548void
5549qlt_mem_free(struct qla_hw_data *ha)
5550{
5551 if (!QLA_TGT_MODE_ENABLED())
5552 return;
5553
5554 if (ha->tgt.atio_ring) {
5555 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
5556 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
5557 ha->tgt.atio_dma);
5558 }
5559 kfree(ha->tgt.tgt_vp_map);
5560}
5561
5562/* vport_slock to be held by the caller */
5563void
5564qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
5565{
5566 if (!QLA_TGT_MODE_ENABLED())
5567 return;
5568
5569 switch (cmd) {
5570 case SET_VP_IDX:
5571 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
5572 break;
5573 case SET_AL_PA:
5574 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
5575 break;
5576 case RESET_VP_IDX:
5577 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
5578 break;
5579 case RESET_AL_PA:
5580 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
5581 break;
5582 }
5583}
5584
5585static int __init qlt_parse_ini_mode(void)
5586{
5587 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
5588 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
5589 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
5590 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
5591 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
5592 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
5593 else
5594 return false;
5595
5596 return true;
5597}
5598
5599int __init qlt_init(void)
5600{
5601 int ret;
5602
5603 if (!qlt_parse_ini_mode()) {
5604 ql_log(ql_log_fatal, NULL, 0xe06b,
5605 "qlt_parse_ini_mode() failed\n");
5606 return -EINVAL;
5607 }
5608
5609 if (!QLA_TGT_MODE_ENABLED())
5610 return 0;
5611
2d70c103
NB		 5612 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
5613 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
5614 qla_tgt_mgmt_cmd), 0, NULL);
5615 if (!qla_tgt_mgmt_cmd_cachep) {
5616 ql_log(ql_log_fatal, NULL, 0xe06d,
5617 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 5618 return -ENOMEM;
2d70c103
NB		 5619 }
5620
5621 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
5622 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
5623 if (!qla_tgt_mgmt_cmd_mempool) {
5624 ql_log(ql_log_fatal, NULL, 0xe06e,
5625 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
5626 ret = -ENOMEM;
5627 goto out_mgmt_cmd_cachep;
5628 }
5629
5630 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
5631 if (!qla_tgt_wq) {
5632 ql_log(ql_log_fatal, NULL, 0xe06f,
5633 "alloc_workqueue for qla_tgt_wq failed\n");
5634 ret = -ENOMEM;
5635 goto out_cmd_mempool;
5636 }
5637 /*
5638 * Return 1 to signal that initiator-mode is being disabled
5639 */
5640 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
5641
5642out_cmd_mempool:
5643 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5644out_mgmt_cmd_cachep:
5645 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 5646 return ret;
5647}
5648
5649void qlt_exit(void)
5650{
5651 if (!QLA_TGT_MODE_ENABLED())
5652 return;
5653
5654 destroy_workqueue(qla_tgt_wq);
5655 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5656 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 5657}
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