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qla2xxx: Increase room in request queue for sending priority packets
[deliverable/linux.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
45static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
46module_param(qlini_mode, charp, S_IRUGO);
47MODULE_PARM_DESC(qlini_mode,
48 "Determines when initiator mode will be enabled. Possible values: "
49 "\"exclusive\" - initiator mode will be enabled on load, "
50 "disabled on enabling target mode and then on disabling target mode "
51 "enabled back; "
52 "\"disabled\" - initiator mode will never be enabled; "
53 "\"enabled\" (default) - initiator mode will always stay enabled.");
54
aa230bc5 55int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103
NB		 56
57/*
58 * From scsi/fc/fc_fcp.h
59 */
60enum fcp_resp_rsp_codes {
61 FCP_TMF_CMPL = 0,
62 FCP_DATA_LEN_INVALID = 1,
63 FCP_CMND_FIELDS_INVALID = 2,
64 FCP_DATA_PARAM_MISMATCH = 3,
65 FCP_TMF_REJECTED = 4,
66 FCP_TMF_FAILED = 5,
67 FCP_TMF_INVALID_LUN = 9,
68};
69
70/*
71 * fc_pri_ta from scsi/fc/fc_fcp.h
72 */
73#define FCP_PTA_SIMPLE 0 /* simple task attribute */
74#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
75#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 76#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 77#define FCP_PTA_MASK 7 /* mask for task attribute field */
78#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
79#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
80
81/*
82 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
83 * must be called under HW lock and could unlock/lock it inside.
84 * It isn't an issue, since in the current implementation on the time when
85 * those functions are called:
86 *
87 * - Either context is IRQ and only IRQ handler can modify HW data,
88 * including rings related fields,
89 *
90 * - Or access to target mode variables from struct qla_tgt doesn't
91 * cross those functions boundaries, except tgt_stop, which
92 * additionally protected by irq_cmd_count.
93 */
94/* Predefs for callbacks handed to qla2xxx LLD */
95static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
96 struct atio_from_isp *pkt);
97static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
98static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
99 int fn, void *iocb, int flags);
100static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
101 *cmd, struct atio_from_isp *atio, int ha_locked);
102static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
103 struct qla_tgt_srr_imm *imm, int ha_lock);
104/*
105 * Global Variables
106 */
2d70c103
NB		 107static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
108static mempool_t *qla_tgt_mgmt_cmd_mempool;
109static struct workqueue_struct *qla_tgt_wq;
110static DEFINE_MUTEX(qla_tgt_mutex);
111static LIST_HEAD(qla_tgt_glist);
112
113/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
114static struct qla_tgt_sess *qlt_find_sess_by_port_name(
115 struct qla_tgt *tgt,
116 const uint8_t *port_name)
117{
118 struct qla_tgt_sess *sess;
119
120 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
121 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
122 return sess;
123 }
124
125 return NULL;
126}
127
128/* Might release hw lock, then reaquire!! */
129static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
130{
131 /* Send marker if required */
132 if (unlikely(vha->marker_needed != 0)) {
133 int rc = qla2x00_issue_marker(vha, vha_locked);
134 if (rc != QLA_SUCCESS) {
135 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
136 "qla_target(%d): issue_marker() failed\n",
137 vha->vp_idx);
138 }
139 return rc;
140 }
141 return QLA_SUCCESS;
142}
143
144static inline
145struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
146 uint8_t *d_id)
147{
148 struct qla_hw_data *ha = vha->hw;
149 uint8_t vp_idx;
150
151 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
152 return NULL;
153
154 if (vha->d_id.b.al_pa == d_id[2])
155 return vha;
156
157 BUG_ON(ha->tgt.tgt_vp_map == NULL);
158 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
159 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
160 return ha->tgt.tgt_vp_map[vp_idx].vha;
161
162 return NULL;
163}
164
165static inline
166struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
167 uint16_t vp_idx)
168{
169 struct qla_hw_data *ha = vha->hw;
170
171 if (vha->vp_idx == vp_idx)
172 return vha;
173
174 BUG_ON(ha->tgt.tgt_vp_map == NULL);
175 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
176 return ha->tgt.tgt_vp_map[vp_idx].vha;
177
178 return NULL;
179}
180
181void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
182 struct atio_from_isp *atio)
183{
f83adb61
QT		 184 ql_dbg(ql_dbg_tgt, vha, 0xe072,
185 "%s: qla_target(%d): type %x ox_id %04x\n",
186 __func__, vha->vp_idx, atio->u.raw.entry_type,
187 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
188
2d70c103
NB		 189 switch (atio->u.raw.entry_type) {
190 case ATIO_TYPE7:
191 {
192 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
193 atio->u.isp24.fcp_hdr.d_id);
194 if (unlikely(NULL == host)) {
195 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
196 "qla_target(%d): Received ATIO_TYPE7 "
197 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
198 atio->u.isp24.fcp_hdr.d_id[0],
199 atio->u.isp24.fcp_hdr.d_id[1],
200 atio->u.isp24.fcp_hdr.d_id[2]);
201 break;
202 }
203 qlt_24xx_atio_pkt(host, atio);
204 break;
205 }
206
207 case IMMED_NOTIFY_TYPE:
208 {
209 struct scsi_qla_host *host = vha;
210 struct imm_ntfy_from_isp *entry =
211 (struct imm_ntfy_from_isp *)atio;
212
213 if ((entry->u.isp24.vp_index != 0xFF) &&
214 (entry->u.isp24.nport_handle != 0xFFFF)) {
215 host = qlt_find_host_by_vp_idx(vha,
216 entry->u.isp24.vp_index);
217 if (unlikely(!host)) {
218 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
219 "qla_target(%d): Received "
220 "ATIO (IMMED_NOTIFY_TYPE) "
221 "with unknown vp_index %d\n",
222 vha->vp_idx, entry->u.isp24.vp_index);
223 break;
224 }
225 }
226 qlt_24xx_atio_pkt(host, atio);
227 break;
228 }
229
230 default:
231 ql_dbg(ql_dbg_tgt, vha, 0xe040,
232 "qla_target(%d): Received unknown ATIO atio "
233 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
234 break;
235 }
236
237 return;
238}
239
240void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
241{
242 switch (pkt->entry_type) {
f83adb61
QT		 243 case CTIO_CRC2:
244 ql_dbg(ql_dbg_tgt, vha, 0xe073,
245 "qla_target(%d):%s: CRC2 Response pkt\n",
246 vha->vp_idx, __func__);
2d70c103
NB		 247 case CTIO_TYPE7:
248 {
249 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
250 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
251 entry->vp_index);
252 if (unlikely(!host)) {
253 ql_dbg(ql_dbg_tgt, vha, 0xe041,
254 "qla_target(%d): Response pkt (CTIO_TYPE7) "
255 "received, with unknown vp_index %d\n",
256 vha->vp_idx, entry->vp_index);
257 break;
258 }
259 qlt_response_pkt(host, pkt);
260 break;
261 }
262
263 case IMMED_NOTIFY_TYPE:
264 {
265 struct scsi_qla_host *host = vha;
266 struct imm_ntfy_from_isp *entry =
267 (struct imm_ntfy_from_isp *)pkt;
268
269 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
270 if (unlikely(!host)) {
271 ql_dbg(ql_dbg_tgt, vha, 0xe042,
272 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
273 "received, with unknown vp_index %d\n",
274 vha->vp_idx, entry->u.isp24.vp_index);
275 break;
276 }
277 qlt_response_pkt(host, pkt);
278 break;
279 }
280
281 case NOTIFY_ACK_TYPE:
282 {
283 struct scsi_qla_host *host = vha;
284 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
285
286 if (0xFF != entry->u.isp24.vp_index) {
287 host = qlt_find_host_by_vp_idx(vha,
288 entry->u.isp24.vp_index);
289 if (unlikely(!host)) {
290 ql_dbg(ql_dbg_tgt, vha, 0xe043,
291 "qla_target(%d): Response "
292 "pkt (NOTIFY_ACK_TYPE) "
293 "received, with unknown "
294 "vp_index %d\n", vha->vp_idx,
295 entry->u.isp24.vp_index);
296 break;
297 }
298 }
299 qlt_response_pkt(host, pkt);
300 break;
301 }
302
303 case ABTS_RECV_24XX:
304 {
305 struct abts_recv_from_24xx *entry =
306 (struct abts_recv_from_24xx *)pkt;
307 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
308 entry->vp_index);
309 if (unlikely(!host)) {
310 ql_dbg(ql_dbg_tgt, vha, 0xe044,
311 "qla_target(%d): Response pkt "
312 "(ABTS_RECV_24XX) received, with unknown "
313 "vp_index %d\n", vha->vp_idx, entry->vp_index);
314 break;
315 }
316 qlt_response_pkt(host, pkt);
317 break;
318 }
319
320 case ABTS_RESP_24XX:
321 {
322 struct abts_resp_to_24xx *entry =
323 (struct abts_resp_to_24xx *)pkt;
324 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
325 entry->vp_index);
326 if (unlikely(!host)) {
327 ql_dbg(ql_dbg_tgt, vha, 0xe045,
328 "qla_target(%d): Response pkt "
329 "(ABTS_RECV_24XX) received, with unknown "
330 "vp_index %d\n", vha->vp_idx, entry->vp_index);
331 break;
332 }
333 qlt_response_pkt(host, pkt);
334 break;
335 }
336
337 default:
338 qlt_response_pkt(vha, pkt);
339 break;
340 }
341
342}
343
344static void qlt_free_session_done(struct work_struct *work)
345{
346 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
347 free_work);
348 struct qla_tgt *tgt = sess->tgt;
349 struct scsi_qla_host *vha = sess->vha;
350 struct qla_hw_data *ha = vha->hw;
351
352 BUG_ON(!tgt);
353 /*
354 * Release the target session for FC Nexus from fabric module code.
355 */
356 if (sess->se_sess != NULL)
357 ha->tgt.tgt_ops->free_session(sess);
358
359 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
360 "Unregistration of sess %p finished\n", sess);
361
362 kfree(sess);
363 /*
364 * We need to protect against race, when tgt is freed before or
365 * inside wake_up()
366 */
367 tgt->sess_count--;
368 if (tgt->sess_count == 0)
369 wake_up_all(&tgt->waitQ);
370}
371
372/* ha->hardware_lock supposed to be held on entry */
373void qlt_unreg_sess(struct qla_tgt_sess *sess)
374{
375 struct scsi_qla_host *vha = sess->vha;
376
377 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
378
379 list_del(&sess->sess_list_entry);
380 if (sess->deleted)
381 list_del(&sess->del_list_entry);
382
383 INIT_WORK(&sess->free_work, qlt_free_session_done);
384 schedule_work(&sess->free_work);
385}
386EXPORT_SYMBOL(qlt_unreg_sess);
387
388/* ha->hardware_lock supposed to be held on entry */
389static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
390{
391 struct qla_hw_data *ha = vha->hw;
392 struct qla_tgt_sess *sess = NULL;
393 uint32_t unpacked_lun, lun = 0;
394 uint16_t loop_id;
395 int res = 0;
396 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
397 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
398
399 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
400 if (loop_id == 0xFFFF) {
401#if 0 /* FIXME: Re-enable Global event handling.. */
402 /* Global event */
403 atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
404 qlt_clear_tgt_db(ha->tgt.qla_tgt, 1);
405 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
406 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
407 typeof(*sess), sess_list_entry);
408 switch (mcmd) {
409 case QLA_TGT_NEXUS_LOSS_SESS:
410 mcmd = QLA_TGT_NEXUS_LOSS;
411 break;
412 case QLA_TGT_ABORT_ALL_SESS:
413 mcmd = QLA_TGT_ABORT_ALL;
414 break;
415 case QLA_TGT_NEXUS_LOSS:
416 case QLA_TGT_ABORT_ALL:
417 break;
418 default:
419 ql_dbg(ql_dbg_tgt, vha, 0xe046,
420 "qla_target(%d): Not allowed "
421 "command %x in %s", vha->vp_idx,
422 mcmd, __func__);
423 sess = NULL;
424 break;
425 }
426 } else
427 sess = NULL;
428#endif
429 } else {
430 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
431 }
432
433 ql_dbg(ql_dbg_tgt, vha, 0xe000,
434 "Using sess for qla_tgt_reset: %p\n", sess);
435 if (!sess) {
436 res = -ESRCH;
437 return res;
438 }
439
440 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 441 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
442 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 443 mcmd, loop_id);
444
445 lun = a->u.isp24.fcp_cmnd.lun;
446 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
447
448 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
449 iocb, QLA24XX_MGMT_SEND_NACK);
450}
451
452/* ha->hardware_lock supposed to be held on entry */
453static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
454 bool immediate)
455{
456 struct qla_tgt *tgt = sess->tgt;
457 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
458
459 if (sess->deleted)
460 return;
461
462 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
463 "Scheduling sess %p for deletion\n", sess);
464 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
465 sess->deleted = 1;
466
467 if (immediate)
468 dev_loss_tmo = 0;
469
470 sess->expires = jiffies + dev_loss_tmo * HZ;
471
472 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
7b833558 473 "qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
2d70c103 474 "deletion in %u secs (expires: %lu) immed: %d\n",
7b833558
OK		 475 sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
476 sess->expires, immediate);
2d70c103
NB		 477
478 if (immediate)
479 schedule_delayed_work(&tgt->sess_del_work, 0);
480 else
481 schedule_delayed_work(&tgt->sess_del_work,
63832aab 482 sess->expires - jiffies);
2d70c103
NB		 483}
484
485/* ha->hardware_lock supposed to be held on entry */
486static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
487{
488 struct qla_tgt_sess *sess;
489
490 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
491 qlt_schedule_sess_for_deletion(sess, true);
492
493 /* At this point tgt could be already dead */
494}
495
496static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
497 uint16_t *loop_id)
498{
499 struct qla_hw_data *ha = vha->hw;
500 dma_addr_t gid_list_dma;
501 struct gid_list_info *gid_list;
502 char *id_iter;
503 int res, rc, i;
504 uint16_t entries;
505
506 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
507 &gid_list_dma, GFP_KERNEL);
508 if (!gid_list) {
509 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
510 "qla_target(%d): DMA Alloc failed of %u\n",
511 vha->vp_idx, qla2x00_gid_list_size(ha));
512 return -ENOMEM;
513 }
514
515 /* Get list of logged in devices */
516 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
517 if (rc != QLA_SUCCESS) {
518 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
519 "qla_target(%d): get_id_list() failed: %x\n",
520 vha->vp_idx, rc);
521 res = -1;
522 goto out_free_id_list;
523 }
524
525 id_iter = (char *)gid_list;
526 res = -1;
527 for (i = 0; i < entries; i++) {
528 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
529 if ((gid->al_pa == s_id[2]) &&
530 (gid->area == s_id[1]) &&
531 (gid->domain == s_id[0])) {
532 *loop_id = le16_to_cpu(gid->loop_id);
533 res = 0;
534 break;
535 }
536 id_iter += ha->gid_list_info_size;
537 }
538
539out_free_id_list:
540 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
541 gid_list, gid_list_dma);
542 return res;
543}
544
2d70c103
NB		 545/* ha->hardware_lock supposed to be held on entry */
546static void qlt_undelete_sess(struct qla_tgt_sess *sess)
547{
548 BUG_ON(!sess->deleted);
549
550 list_del(&sess->del_list_entry);
551 sess->deleted = 0;
552}
553
554static void qlt_del_sess_work_fn(struct delayed_work *work)
555{
556 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
557 sess_del_work);
558 struct scsi_qla_host *vha = tgt->vha;
559 struct qla_hw_data *ha = vha->hw;
560 struct qla_tgt_sess *sess;
63832aab 561 unsigned long flags, elapsed;
2d70c103
NB		 562
563 spin_lock_irqsave(&ha->hardware_lock, flags);
564 while (!list_empty(&tgt->del_sess_list)) {
565 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
566 del_list_entry);
63832aab
SU		 567 elapsed = jiffies;
568 if (time_after_eq(elapsed, sess->expires)) {
2d70c103
NB		 569 qlt_undelete_sess(sess);
570
08234e3a
JE		 571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
572 "Timeout: sess %p about to be deleted\n",
573 sess);
574 ha->tgt.tgt_ops->shutdown_sess(sess);
575 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 576 } else {
577 schedule_delayed_work(&tgt->sess_del_work,
63832aab 578 sess->expires - elapsed);
2d70c103
NB		 579 break;
580 }
581 }
582 spin_unlock_irqrestore(&ha->hardware_lock, flags);
583}
584
585/*
586 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
587 * Caller must put it.
588 */
589static struct qla_tgt_sess *qlt_create_sess(
590 struct scsi_qla_host *vha,
591 fc_port_t *fcport,
592 bool local)
593{
594 struct qla_hw_data *ha = vha->hw;
595 struct qla_tgt_sess *sess;
596 unsigned long flags;
597 unsigned char be_sid[3];
598
599 /* Check to avoid double sessions */
600 spin_lock_irqsave(&ha->hardware_lock, flags);
0e8cd71c 601 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
2d70c103
NB		 602 sess_list_entry) {
603 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
604 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
605 "Double sess %p found (s_id %x:%x:%x, "
606 "loop_id %d), updating to d_id %x:%x:%x, "
607 "loop_id %d", sess, sess->s_id.b.domain,
608 sess->s_id.b.al_pa, sess->s_id.b.area,
609 sess->loop_id, fcport->d_id.b.domain,
610 fcport->d_id.b.al_pa, fcport->d_id.b.area,
611 fcport->loop_id);
612
613 if (sess->deleted)
614 qlt_undelete_sess(sess);
615
616 kref_get(&sess->se_sess->sess_kref);
c8292d1d
RD		 617 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
618 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
619
2d70c103
NB		 620 if (sess->local && !local)
621 sess->local = 0;
622 spin_unlock_irqrestore(&ha->hardware_lock, flags);
623
624 return sess;
625 }
626 }
627 spin_unlock_irqrestore(&ha->hardware_lock, flags);
628
629 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
630 if (!sess) {
631 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
7b833558
OK		 632 "qla_target(%u): session allocation failed, all commands "
633 "from port %8phC will be refused", vha->vp_idx,
634 fcport->port_name);
2d70c103
NB		 635
636 return NULL;
637 }
0e8cd71c 638 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 639 sess->vha = vha;
640 sess->s_id = fcport->d_id;
641 sess->loop_id = fcport->loop_id;
642 sess->local = local;
643
644 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
645 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
0e8cd71c 646 sess, vha->vha_tgt.qla_tgt);
2d70c103
NB		 647
648 be_sid[0] = sess->s_id.b.domain;
649 be_sid[1] = sess->s_id.b.area;
650 be_sid[2] = sess->s_id.b.al_pa;
651 /*
652 * Determine if this fc_port->port_name is allowed to access
653 * target mode using explict NodeACLs+MappedLUNs, or using
654 * TPG demo mode. If this is successful a target mode FC nexus
655 * is created.
656 */
657 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
658 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
659 kfree(sess);
660 return NULL;
661 }
662 /*
663 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
664 * access across ->hardware_lock reaquire.
665 */
666 kref_get(&sess->se_sess->sess_kref);
667
c8292d1d 668 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
2d70c103
NB		 669 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
670 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
671
672 spin_lock_irqsave(&ha->hardware_lock, flags);
0e8cd71c
SK		 673 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
674 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103
NB		 675 spin_unlock_irqrestore(&ha->hardware_lock, flags);
676
677 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 678 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
679 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
680 vha->vp_idx, local ? "local " : "", fcport->port_name,
681 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
682 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 683
684 return sess;
685}
686
687/*
688 * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
689 */
690void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
691{
692 struct qla_hw_data *ha = vha->hw;
0e8cd71c 693 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 694 struct qla_tgt_sess *sess;
695 unsigned long flags;
696
697 if (!vha->hw->tgt.tgt_ops)
698 return;
699
700 if (!tgt || (fcport->port_type != FCT_INITIATOR))
701 return;
702
0e8cd71c
SK		 703 if (qla_ini_mode_enabled(vha))
704 return;
705
2d70c103
NB		 706 spin_lock_irqsave(&ha->hardware_lock, flags);
707 if (tgt->tgt_stop) {
708 spin_unlock_irqrestore(&ha->hardware_lock, flags);
709 return;
710 }
711 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
712 if (!sess) {
713 spin_unlock_irqrestore(&ha->hardware_lock, flags);
714
0e8cd71c 715 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 716 sess = qlt_create_sess(vha, fcport, false);
0e8cd71c 717 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 718
719 spin_lock_irqsave(&ha->hardware_lock, flags);
720 } else {
721 kref_get(&sess->se_sess->sess_kref);
722
723 if (sess->deleted) {
724 qlt_undelete_sess(sess);
725
726 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
7b833558
OK		 727 "qla_target(%u): %ssession for port %8phC "
728 "(loop ID %d) reappeared\n", vha->vp_idx,
729 sess->local ? "local " : "", sess->port_name,
2d70c103
NB		 730 sess->loop_id);
731
732 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
733 "Reappeared sess %p\n", sess);
734 }
c8292d1d
RD		 735 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
736 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
2d70c103
NB		 737 }
738
739 if (sess && sess->local) {
740 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
741 "qla_target(%u): local session for "
7b833558
OK		 742 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
743 fcport->port_name, sess->loop_id);
2d70c103
NB		 744 sess->local = 0;
745 }
2d70c103 746 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 747 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 748}
749
750void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
751{
752 struct qla_hw_data *ha = vha->hw;
0e8cd71c 753 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 754 struct qla_tgt_sess *sess;
755 unsigned long flags;
756
757 if (!vha->hw->tgt.tgt_ops)
758 return;
759
760 if (!tgt || (fcport->port_type != FCT_INITIATOR))
761 return;
762
763 spin_lock_irqsave(&ha->hardware_lock, flags);
764 if (tgt->tgt_stop) {
765 spin_unlock_irqrestore(&ha->hardware_lock, flags);
766 return;
767 }
768 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
769 if (!sess) {
770 spin_unlock_irqrestore(&ha->hardware_lock, flags);
771 return;
772 }
773
774 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
775
776 sess->local = 1;
777 qlt_schedule_sess_for_deletion(sess, false);
778 spin_unlock_irqrestore(&ha->hardware_lock, flags);
779}
780
781static inline int test_tgt_sess_count(struct qla_tgt *tgt)
782{
783 struct qla_hw_data *ha = tgt->ha;
784 unsigned long flags;
785 int res;
786 /*
787 * We need to protect against race, when tgt is freed before or
788 * inside wake_up()
789 */
790 spin_lock_irqsave(&ha->hardware_lock, flags);
791 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
792 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
793 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
794 res = (tgt->sess_count == 0);
795 spin_unlock_irqrestore(&ha->hardware_lock, flags);
796
797 return res;
798}
799
800/* Called by tcm_qla2xxx configfs code */
3c231bda 801int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 802{
803 struct scsi_qla_host *vha = tgt->vha;
804 struct qla_hw_data *ha = tgt->ha;
805 unsigned long flags;
806
3c231bda
NB		 807 mutex_lock(&qla_tgt_mutex);
808 if (!vha->fc_vport) {
809 struct Scsi_Host *sh = vha->host;
810 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
811 bool npiv_vports;
812
813 spin_lock_irqsave(sh->host_lock, flags);
814 npiv_vports = (fc_host->npiv_vports_inuse);
815 spin_unlock_irqrestore(sh->host_lock, flags);
816
817 if (npiv_vports) {
818 mutex_unlock(&qla_tgt_mutex);
819 return -EPERM;
820 }
821 }
2d70c103
NB		 822 if (tgt->tgt_stop || tgt->tgt_stopped) {
823 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
824 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 825 mutex_unlock(&qla_tgt_mutex);
826 return -EPERM;
2d70c103
NB		 827 }
828
829 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
830 vha->host_no, vha);
831 /*
832 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
833 * Lock is needed, because we still can get an incoming packet.
834 */
0e8cd71c 835 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 836 spin_lock_irqsave(&ha->hardware_lock, flags);
837 tgt->tgt_stop = 1;
838 qlt_clear_tgt_db(tgt, true);
839 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 840 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 841 mutex_unlock(&qla_tgt_mutex);
2d70c103 842
43829731 843 flush_delayed_work(&tgt->sess_del_work);
2d70c103
NB		 844
845 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
846 "Waiting for sess works (tgt %p)", tgt);
847 spin_lock_irqsave(&tgt->sess_work_lock, flags);
848 while (!list_empty(&tgt->sess_works_list)) {
849 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
850 flush_scheduled_work();
851 spin_lock_irqsave(&tgt->sess_work_lock, flags);
852 }
853 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
854
855 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
856 "Waiting for tgt %p: list_empty(sess_list)=%d "
857 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
858 tgt->sess_count);
859
860 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
861
862 /* Big hammer */
863 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
864 qlt_disable_vha(vha);
865
866 /* Wait for sessions to clear out (just in case) */
867 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 868 return 0;
2d70c103
NB		 869}
870EXPORT_SYMBOL(qlt_stop_phase1);
871
872/* Called by tcm_qla2xxx configfs code */
873void qlt_stop_phase2(struct qla_tgt *tgt)
874{
875 struct qla_hw_data *ha = tgt->ha;
0e8cd71c 876 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 877 unsigned long flags;
878
879 if (tgt->tgt_stopped) {
0e8cd71c 880 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 881 "Already in tgt->tgt_stopped state\n");
882 dump_stack();
883 return;
884 }
885
0e8cd71c 886 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
2d70c103
NB		 887 "Waiting for %d IRQ commands to complete (tgt %p)",
888 tgt->irq_cmd_count, tgt);
889
0e8cd71c 890 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 891 spin_lock_irqsave(&ha->hardware_lock, flags);
892 while (tgt->irq_cmd_count != 0) {
893 spin_unlock_irqrestore(&ha->hardware_lock, flags);
894 udelay(2);
895 spin_lock_irqsave(&ha->hardware_lock, flags);
896 }
897 tgt->tgt_stop = 0;
898 tgt->tgt_stopped = 1;
899 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 900 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 901
0e8cd71c 902 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
2d70c103
NB		 903 tgt);
904}
905EXPORT_SYMBOL(qlt_stop_phase2);
906
907/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 908static void qlt_release(struct qla_tgt *tgt)
2d70c103 909{
0e8cd71c 910 scsi_qla_host_t *vha = tgt->vha;
2d70c103 911
0e8cd71c 912 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 913 qlt_stop_phase2(tgt);
914
0e8cd71c 915 vha->vha_tgt.qla_tgt = NULL;
2d70c103 916
0e8cd71c 917 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 918 "Release of tgt %p finished\n", tgt);
919
920 kfree(tgt);
921}
922
923/* ha->hardware_lock supposed to be held on entry */
924static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
925 const void *param, unsigned int param_size)
926{
927 struct qla_tgt_sess_work_param *prm;
928 unsigned long flags;
929
930 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
931 if (!prm) {
932 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
933 "qla_target(%d): Unable to create session "
934 "work, command will be refused", 0);
935 return -ENOMEM;
936 }
937
938 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
939 "Scheduling work (type %d, prm %p)"
940 " to find session for param %p (size %d, tgt %p)\n",
941 type, prm, param, param_size, tgt);
942
943 prm->type = type;
944 memcpy(&prm->tm_iocb, param, param_size);
945
946 spin_lock_irqsave(&tgt->sess_work_lock, flags);
947 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
948 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
949
950 schedule_work(&tgt->sess_work);
951
952 return 0;
953}
954
955/*
956 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
957 */
958static void qlt_send_notify_ack(struct scsi_qla_host *vha,
959 struct imm_ntfy_from_isp *ntfy,
960 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
961 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
962{
963 struct qla_hw_data *ha = vha->hw;
964 request_t *pkt;
965 struct nack_to_isp *nack;
966
967 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
968
969 /* Send marker if required */
970 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
971 return;
972
973 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
974 if (!pkt) {
975 ql_dbg(ql_dbg_tgt, vha, 0xe049,
976 "qla_target(%d): %s failed: unable to allocate "
977 "request packet\n", vha->vp_idx, __func__);
978 return;
979 }
980
0e8cd71c
SK		 981 if (vha->vha_tgt.qla_tgt != NULL)
982 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 983
984 pkt->entry_type = NOTIFY_ACK_TYPE;
985 pkt->entry_count = 1;
986
987 nack = (struct nack_to_isp *)pkt;
988 nack->ox_id = ntfy->ox_id;
989
990 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
991 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
992 nack->u.isp24.flags = ntfy->u.isp24.flags &
993 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
994 }
995 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
996 nack->u.isp24.status = ntfy->u.isp24.status;
997 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 998 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 999 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1000 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1001 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1002 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1003 nack->u.isp24.srr_reject_code = srr_reject_code;
1004 nack->u.isp24.srr_reject_code_expl = srr_explan;
1005 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1006
1007 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1008 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1009 vha->vp_idx, nack->u.isp24.status);
1010
1011 qla2x00_start_iocbs(vha, vha->req);
1012}
1013
1014/*
1015 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1016 */
1017static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1018 struct abts_recv_from_24xx *abts, uint32_t status,
1019 bool ids_reversed)
1020{
1021 struct qla_hw_data *ha = vha->hw;
1022 struct abts_resp_to_24xx *resp;
1023 uint32_t f_ctl;
1024 uint8_t *p;
1025
1026 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1027 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1028 ha, abts, status);
1029
1030 /* Send marker if required */
1031 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1032 return;
1033
1034 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1035 if (!resp) {
1036 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1037 "qla_target(%d): %s failed: unable to allocate "
1038 "request packet", vha->vp_idx, __func__);
1039 return;
1040 }
1041
1042 resp->entry_type = ABTS_RESP_24XX;
1043 resp->entry_count = 1;
1044 resp->nport_handle = abts->nport_handle;
1045 resp->vp_index = vha->vp_idx;
1046 resp->sof_type = abts->sof_type;
1047 resp->exchange_address = abts->exchange_address;
1048 resp->fcp_hdr_le = abts->fcp_hdr_le;
1049 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1050 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1051 F_CTL_SEQ_INITIATIVE);
1052 p = (uint8_t *)&f_ctl;
1053 resp->fcp_hdr_le.f_ctl[0] = *p++;
1054 resp->fcp_hdr_le.f_ctl[1] = *p++;
1055 resp->fcp_hdr_le.f_ctl[2] = *p;
1056 if (ids_reversed) {
1057 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1058 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1059 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1060 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1061 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1062 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1063 } else {
1064 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1065 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1066 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1067 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1068 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1069 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1070 }
1071 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1072 if (status == FCP_TMF_CMPL) {
1073 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1074 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1075 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1076 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1077 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1078 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1079 } else {
1080 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1081 resp->payload.ba_rjt.reason_code =
1082 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1083 /* Other bytes are zero */
1084 }
1085
0e8cd71c 1086 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103
NB		 1087
1088 qla2x00_start_iocbs(vha, vha->req);
1089}
1090
1091/*
1092 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1093 */
1094static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1095 struct abts_resp_from_24xx_fw *entry)
1096{
1097 struct ctio7_to_24xx *ctio;
1098
1099 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1100 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1101 /* Send marker if required */
1102 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1103 return;
1104
1105 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
1106 if (ctio == NULL) {
1107 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1108 "qla_target(%d): %s failed: unable to allocate "
1109 "request packet\n", vha->vp_idx, __func__);
1110 return;
1111 }
1112
1113 /*
1114 * We've got on entrance firmware's response on by us generated
1115 * ABTS response. So, in it ID fields are reversed.
1116 */
1117
1118 ctio->entry_type = CTIO_TYPE7;
1119 ctio->entry_count = 1;
1120 ctio->nport_handle = entry->nport_handle;
1121 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1122 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1123 ctio->vp_index = vha->vp_idx;
1124 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1125 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1126 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1127 ctio->exchange_addr = entry->exchange_addr_to_abort;
1128 ctio->u.status1.flags =
1129 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1130 CTIO7_FLAGS_TERMINATE);
33a5fcee 1131 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103
NB		 1132
1133 qla2x00_start_iocbs(vha, vha->req);
1134
1135 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1136 FCP_TMF_CMPL, true);
1137}
1138
1139/* ha->hardware_lock supposed to be held on entry */
1140static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1141 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1142{
1143 struct qla_hw_data *ha = vha->hw;
06e97b48 1144 struct se_session *se_sess = sess->se_sess;
2d70c103 1145 struct qla_tgt_mgmt_cmd *mcmd;
06e97b48
SH		 1146 struct se_cmd *se_cmd;
1147 u32 lun = 0;
2d70c103 1148 int rc;
06e97b48
SH		 1149 bool found_lun = false;
1150
1151 spin_lock(&se_sess->sess_cmd_lock);
1152 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1153 struct qla_tgt_cmd *cmd =
1154 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
1155 if (cmd->tag == abts->exchange_addr_to_abort) {
1156 lun = cmd->unpacked_lun;
1157 found_lun = true;
1158 break;
1159 }
1160 }
1161 spin_unlock(&se_sess->sess_cmd_lock);
1162
1163 if (!found_lun)
1164 return -ENOENT;
2d70c103
NB		 1165
1166 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1167 "qla_target(%d): task abort (tag=%d)\n",
1168 vha->vp_idx, abts->exchange_addr_to_abort);
1169
1170 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1171 if (mcmd == NULL) {
1172 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1173 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1174 vha->vp_idx, __func__);
1175 return -ENOMEM;
1176 }
1177 memset(mcmd, 0, sizeof(*mcmd));
1178
1179 mcmd->sess = sess;
1180 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
1181
06e97b48 1182 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
2d70c103
NB		 1183 abts->exchange_addr_to_abort);
1184 if (rc != 0) {
1185 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1186 "qla_target(%d): tgt_ops->handle_tmr()"
1187 " failed: %d", vha->vp_idx, rc);
1188 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1189 return -EFAULT;
1190 }
1191
1192 return 0;
1193}
1194
1195/*
1196 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1197 */
1198static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1199 struct abts_recv_from_24xx *abts)
1200{
1201 struct qla_hw_data *ha = vha->hw;
1202 struct qla_tgt_sess *sess;
1203 uint32_t tag = abts->exchange_addr_to_abort;
1204 uint8_t s_id[3];
1205 int rc;
1206
1207 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1208 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1209 "qla_target(%d): ABTS: Abort Sequence not "
1210 "supported\n", vha->vp_idx);
1211 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1212 return;
1213 }
1214
1215 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1216 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1217 "qla_target(%d): ABTS: Unknown Exchange "
1218 "Address received\n", vha->vp_idx);
1219 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1220 return;
1221 }
1222
1223 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1224 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1225 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1226 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1227 le32_to_cpu(abts->fcp_hdr_le.parameter));
1228
1229 s_id[0] = abts->fcp_hdr_le.s_id[2];
1230 s_id[1] = abts->fcp_hdr_le.s_id[1];
1231 s_id[2] = abts->fcp_hdr_le.s_id[0];
1232
1233 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1234 if (!sess) {
1235 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1236 "qla_target(%d): task abort for non-existant session\n",
1237 vha->vp_idx);
0e8cd71c 1238 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 1239 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
1240 if (rc != 0) {
1241 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1242 false);
1243 }
1244 return;
1245 }
1246
1247 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1248 if (rc != 0) {
1249 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1250 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1251 vha->vp_idx, rc);
1252 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1253 return;
1254 }
1255}
1256
1257/*
1258 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1259 */
1260static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1261 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1262{
1263 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1264 struct ctio7_to_24xx *ctio;
33a5fcee 1265 uint16_t temp;
2d70c103
NB		 1266
1267 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1268 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1269 ha, atio, resp_code);
1270
1271 /* Send marker if required */
1272 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1273 return;
1274
1275 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1276 if (ctio == NULL) {
1277 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1278 "qla_target(%d): %s failed: unable to allocate "
1279 "request packet\n", ha->vp_idx, __func__);
1280 return;
1281 }
1282
1283 ctio->entry_type = CTIO_TYPE7;
1284 ctio->entry_count = 1;
1285 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1286 ctio->nport_handle = mcmd->sess->loop_id;
1287 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1288 ctio->vp_index = ha->vp_idx;
1289 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1290 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1291 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1292 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1293 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
1294 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1295 CTIO7_FLAGS_SEND_STATUS);
33a5fcee
QT		 1296 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1297 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 1298 ctio->u.status1.scsi_status =
1299 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1300 ctio->u.status1.response_len = __constant_cpu_to_le16(8);
e4b11b89 1301 ctio->u.status1.sense_data[0] = resp_code;
2d70c103
NB		 1302
1303 qla2x00_start_iocbs(ha, ha->req);
1304}
1305
1306void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1307{
1308 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1309}
1310EXPORT_SYMBOL(qlt_free_mcmd);
1311
1312/* callback from target fabric module code */
1313void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1314{
1315 struct scsi_qla_host *vha = mcmd->sess->vha;
1316 struct qla_hw_data *ha = vha->hw;
1317 unsigned long flags;
1318
1319 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1320 "TM response mcmd (%p) status %#x state %#x",
1321 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1322
1323 spin_lock_irqsave(&ha->hardware_lock, flags);
1324 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1325 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1326 0, 0, 0, 0, 0, 0);
1327 else {
1328 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1329 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1330 mcmd->fc_tm_rsp, false);
1331 else
1332 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1333 mcmd->fc_tm_rsp);
1334 }
1335 /*
1336 * Make the callback for ->free_mcmd() to queue_work() and invoke
1337 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1338 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1339 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1340 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1341 * qlt_xmit_tm_rsp() returns here..
1342 */
1343 ha->tgt.tgt_ops->free_mcmd(mcmd);
1344 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1345}
1346EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1347
1348/* No locks */
1349static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1350{
1351 struct qla_tgt_cmd *cmd = prm->cmd;
1352
1353 BUG_ON(cmd->sg_cnt == 0);
1354
1355 prm->sg = (struct scatterlist *)cmd->sg;
1356 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1357 cmd->sg_cnt, cmd->dma_data_direction);
1358 if (unlikely(prm->seg_cnt == 0))
1359 goto out_err;
1360
1361 prm->cmd->sg_mapped = 1;
1362
f83adb61
QT		 1363 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1364 /*
1365 * If greater than four sg entries then we need to allocate
1366 * the continuation entries
1367 */
1368 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1369 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1370 prm->tgt->datasegs_per_cmd,
1371 prm->tgt->datasegs_per_cont);
1372 } else {
1373 /* DIF */
1374 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1375 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1376 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1377 prm->tot_dsds = prm->seg_cnt;
1378 } else
1379 prm->tot_dsds = prm->seg_cnt;
1380
1381 if (cmd->prot_sg_cnt) {
1382 prm->prot_sg = cmd->prot_sg;
1383 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1384 cmd->prot_sg, cmd->prot_sg_cnt,
1385 cmd->dma_data_direction);
1386 if (unlikely(prm->prot_seg_cnt == 0))
1387 goto out_err;
1388
1389 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1390 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1391 /* Dif Bundling not support here */
1392 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1393 cmd->blk_sz);
1394 prm->tot_dsds += prm->prot_seg_cnt;
1395 } else
1396 prm->tot_dsds += prm->prot_seg_cnt;
1397 }
1398 }
2d70c103
NB		 1399
1400 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
1401 prm->seg_cnt, prm->req_cnt);
1402 return 0;
1403
1404out_err:
1405 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1406 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1407 0, prm->cmd->sg_cnt);
1408 return -1;
1409}
1410
1411static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
1412 struct qla_tgt_cmd *cmd)
1413{
1414 struct qla_hw_data *ha = vha->hw;
1415
1416 BUG_ON(!cmd->sg_mapped);
1417 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1418 cmd->sg_mapped = 0;
f83adb61
QT		 1419
1420 if (cmd->prot_sg_cnt)
1421 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1422 cmd->dma_data_direction);
1423
1424 if (cmd->ctx_dsd_alloced)
1425 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1426
1427 if (cmd->ctx)
1428 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 1429}
1430
1431static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1432 uint32_t req_cnt)
1433{
2d70c103
NB		 1434 uint32_t cnt;
1435
1436 if (vha->req->cnt < (req_cnt + 2)) {
75554b68 1437 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
2d70c103
NB		 1438
1439 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
1440 "Request ring circled: cnt=%d, vha->->ring_index=%d, "
1441 "vha->req->cnt=%d, req_cnt=%d\n", cnt,
1442 vha->req->ring_index, vha->req->cnt, req_cnt);
1443 if (vha->req->ring_index < cnt)
1444 vha->req->cnt = cnt - vha->req->ring_index;
1445 else
1446 vha->req->cnt = vha->req->length -
1447 (vha->req->ring_index - cnt);
1448 }
1449
1450 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
1451 ql_dbg(ql_dbg_tgt, vha, 0xe00b,
1452 "qla_target(%d): There is no room in the "
1453 "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
1454 "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
1455 vha->req->cnt, req_cnt);
1456 return -EAGAIN;
1457 }
1458 vha->req->cnt -= req_cnt;
1459
1460 return 0;
1461}
1462
1463/*
1464 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1465 */
1466static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1467{
1468 /* Adjust ring index. */
1469 vha->req->ring_index++;
1470 if (vha->req->ring_index == vha->req->length) {
1471 vha->req->ring_index = 0;
1472 vha->req->ring_ptr = vha->req->ring;
1473 } else {
1474 vha->req->ring_ptr++;
1475 }
1476 return (cont_entry_t *)vha->req->ring_ptr;
1477}
1478
1479/* ha->hardware_lock supposed to be held on entry */
1480static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1481{
1482 struct qla_hw_data *ha = vha->hw;
1483 uint32_t h;
1484
1485 h = ha->tgt.current_handle;
1486 /* always increment cmd handle */
1487 do {
1488 ++h;
8d93f550 1489 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 1490 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1491 if (h == ha->tgt.current_handle) {
1492 ql_dbg(ql_dbg_tgt, vha, 0xe04e,
1493 "qla_target(%d): Ran out of "
1494 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1495 h = QLA_TGT_NULL_HANDLE;
1496 break;
1497 }
1498 } while ((h == QLA_TGT_NULL_HANDLE) ||
1499 (h == QLA_TGT_SKIP_HANDLE) ||
1500 (ha->tgt.cmds[h-1] != NULL));
1501
1502 if (h != QLA_TGT_NULL_HANDLE)
1503 ha->tgt.current_handle = h;
1504
1505 return h;
1506}
1507
1508/* ha->hardware_lock supposed to be held on entry */
1509static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1510 struct scsi_qla_host *vha)
1511{
1512 uint32_t h;
1513 struct ctio7_to_24xx *pkt;
1514 struct qla_hw_data *ha = vha->hw;
1515 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 1516 uint16_t temp;
2d70c103
NB		 1517
1518 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1519 prm->pkt = pkt;
1520 memset(pkt, 0, sizeof(*pkt));
1521
1522 pkt->entry_type = CTIO_TYPE7;
1523 pkt->entry_count = (uint8_t)prm->req_cnt;
1524 pkt->vp_index = vha->vp_idx;
1525
1526 h = qlt_make_handle(vha);
1527 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1528 /*
1529 * CTIO type 7 from the firmware doesn't provide a way to
1530 * know the initiator's LOOP ID, hence we can't find
1531 * the session and, so, the command.
1532 */
1533 return -EAGAIN;
1534 } else
1535 ha->tgt.cmds[h-1] = prm->cmd;
1536
1537 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1538 pkt->nport_handle = prm->cmd->loop_id;
1539 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
1540 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1541 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1542 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1543 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1544 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
33a5fcee
QT		 1545 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1546 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 1547 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1548
1549 ql_dbg(ql_dbg_tgt, vha, 0xe00c,
1550 "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
33a5fcee 1551 vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT, temp);
2d70c103
NB		 1552 return 0;
1553}
1554
1555/*
1556 * ha->hardware_lock supposed to be held on entry. We have already made sure
1557 * that there is sufficient amount of request entries to not drop it.
1558 */
1559static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1560 struct scsi_qla_host *vha)
1561{
1562 int cnt;
1563 uint32_t *dword_ptr;
1564 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1565
1566 /* Build continuation packets */
1567 while (prm->seg_cnt > 0) {
1568 cont_a64_entry_t *cont_pkt64 =
1569 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1570
1571 /*
1572 * Make sure that from cont_pkt64 none of
1573 * 64-bit specific fields used for 32-bit
1574 * addressing. Cast to (cont_entry_t *) for
1575 * that.
1576 */
1577
1578 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1579
1580 cont_pkt64->entry_count = 1;
1581 cont_pkt64->sys_define = 0;
1582
1583 if (enable_64bit_addressing) {
1584 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
1585 dword_ptr =
1586 (uint32_t *)&cont_pkt64->dseg_0_address;
1587 } else {
1588 cont_pkt64->entry_type = CONTINUE_TYPE;
1589 dword_ptr =
1590 (uint32_t *)&((cont_entry_t *)
1591 cont_pkt64)->dseg_0_address;
1592 }
1593
1594 /* Load continuation entry data segments */
1595 for (cnt = 0;
1596 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
1597 cnt++, prm->seg_cnt--) {
1598 *dword_ptr++ =
1599 cpu_to_le32(pci_dma_lo32
1600 (sg_dma_address(prm->sg)));
1601 if (enable_64bit_addressing) {
1602 *dword_ptr++ =
1603 cpu_to_le32(pci_dma_hi32
1604 (sg_dma_address
1605 (prm->sg)));
1606 }
1607 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1608
1609 ql_dbg(ql_dbg_tgt, vha, 0xe00d,
1610 "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
1611 (long long unsigned int)
1612 pci_dma_hi32(sg_dma_address(prm->sg)),
1613 (long long unsigned int)
1614 pci_dma_lo32(sg_dma_address(prm->sg)),
1615 (int)sg_dma_len(prm->sg));
1616
1617 prm->sg = sg_next(prm->sg);
1618 }
1619 }
1620}
1621
1622/*
1623 * ha->hardware_lock supposed to be held on entry. We have already made sure
1624 * that there is sufficient amount of request entries to not drop it.
1625 */
1626static void qlt_load_data_segments(struct qla_tgt_prm *prm,
1627 struct scsi_qla_host *vha)
1628{
1629 int cnt;
1630 uint32_t *dword_ptr;
1631 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1632 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
1633
1634 ql_dbg(ql_dbg_tgt, vha, 0xe00e,
1635 "iocb->scsi_status=%x, iocb->flags=%x\n",
1636 le16_to_cpu(pkt24->u.status0.scsi_status),
1637 le16_to_cpu(pkt24->u.status0.flags));
1638
1639 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
1640
1641 /* Setup packet address segment pointer */
1642 dword_ptr = pkt24->u.status0.dseg_0_address;
1643
1644 /* Set total data segment count */
1645 if (prm->seg_cnt)
1646 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
1647
1648 if (prm->seg_cnt == 0) {
1649 /* No data transfer */
1650 *dword_ptr++ = 0;
1651 *dword_ptr = 0;
1652 return;
1653 }
1654
1655 /* If scatter gather */
1656 ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
1657
1658 /* Load command entry data segments */
1659 for (cnt = 0;
1660 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
1661 cnt++, prm->seg_cnt--) {
1662 *dword_ptr++ =
1663 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
1664 if (enable_64bit_addressing) {
1665 *dword_ptr++ =
1666 cpu_to_le32(pci_dma_hi32(
1667 sg_dma_address(prm->sg)));
1668 }
1669 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
1670
1671 ql_dbg(ql_dbg_tgt, vha, 0xe010,
1672 "S/G Segment phys_addr=%llx:%llx, len=%d\n",
1673 (long long unsigned int)pci_dma_hi32(sg_dma_address(
1674 prm->sg)),
1675 (long long unsigned int)pci_dma_lo32(sg_dma_address(
1676 prm->sg)),
1677 (int)sg_dma_len(prm->sg));
1678
1679 prm->sg = sg_next(prm->sg);
1680 }
1681
1682 qlt_load_cont_data_segments(prm, vha);
1683}
1684
1685static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
1686{
1687 return cmd->bufflen > 0;
1688}
1689
1690/*
1691 * Called without ha->hardware_lock held
1692 */
1693static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
1694 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
1695 uint32_t *full_req_cnt)
1696{
1697 struct qla_tgt *tgt = cmd->tgt;
1698 struct scsi_qla_host *vha = tgt->vha;
1699 struct qla_hw_data *ha = vha->hw;
1700 struct se_cmd *se_cmd = &cmd->se_cmd;
1701
1702 if (unlikely(cmd->aborted)) {
1703 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
1704 "qla_target(%d): terminating exchange "
1705 "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
1706 se_cmd, cmd->tag);
1707
1708 cmd->state = QLA_TGT_STATE_ABORTED;
1709
1710 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
1711
1712 /* !! At this point cmd could be already freed !! */
1713 return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
1714 }
1715
f83adb61
QT		 1716 ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u ox_id %04x\n",
1717 vha->vp_idx, cmd->tag,
1718 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103
NB		 1719
1720 prm->cmd = cmd;
1721 prm->tgt = tgt;
1722 prm->rq_result = scsi_status;
1723 prm->sense_buffer = &cmd->sense_buffer[0];
1724 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
1725 prm->sg = NULL;
1726 prm->seg_cnt = -1;
1727 prm->req_cnt = 1;
1728 prm->add_status_pkt = 0;
1729
1730 ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
1731 prm->rq_result, xmit_type);
1732
1733 /* Send marker if required */
1734 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
1735 return -EFAULT;
1736
1737 ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
1738
1739 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
1740 if (qlt_pci_map_calc_cnt(prm) != 0)
1741 return -EAGAIN;
1742 }
1743
1744 *full_req_cnt = prm->req_cnt;
1745
1746 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
1747 prm->residual = se_cmd->residual_count;
1748 ql_dbg(ql_dbg_tgt, vha, 0xe014,
1749 "Residual underflow: %d (tag %d, "
1750 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1751 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1752 cmd->bufflen, prm->rq_result);
1753 prm->rq_result |= SS_RESIDUAL_UNDER;
1754 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
1755 prm->residual = se_cmd->residual_count;
1756 ql_dbg(ql_dbg_tgt, vha, 0xe015,
1757 "Residual overflow: %d (tag %d, "
1758 "op %x, bufflen %d, rq_result %x)\n", prm->residual,
1759 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
1760 cmd->bufflen, prm->rq_result);
1761 prm->rq_result |= SS_RESIDUAL_OVER;
1762 }
1763
1764 if (xmit_type & QLA_TGT_XMIT_STATUS) {
1765 /*
1766 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
1767 * ignored in *xmit_response() below
1768 */
1769 if (qlt_has_data(cmd)) {
1770 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
1771 (IS_FWI2_CAPABLE(ha) &&
1772 (prm->rq_result != 0))) {
1773 prm->add_status_pkt = 1;
1774 (*full_req_cnt)++;
1775 }
1776 }
1777 }
1778
1779 ql_dbg(ql_dbg_tgt, vha, 0xe016,
1780 "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
1781 prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
1782
1783 return 0;
1784}
1785
1786static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
1787 struct qla_tgt_cmd *cmd, int sending_sense)
1788{
1789 if (ha->tgt.enable_class_2)
1790 return 0;
1791
1792 if (sending_sense)
1793 return cmd->conf_compl_supported;
1794 else
1795 return ha->tgt.enable_explicit_conf &&
1796 cmd->conf_compl_supported;
1797}
1798
1799#ifdef CONFIG_QLA_TGT_DEBUG_SRR
1800/*
1801 * Original taken from the XFS code
1802 */
1803static unsigned long qlt_srr_random(void)
1804{
1805 static int Inited;
1806 static unsigned long RandomValue;
1807 static DEFINE_SPINLOCK(lock);
1808 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
1809 register long rv;
1810 register long lo;
1811 register long hi;
1812 unsigned long flags;
1813
1814 spin_lock_irqsave(&lock, flags);
1815 if (!Inited) {
1816 RandomValue = jiffies;
1817 Inited = 1;
1818 }
1819 rv = RandomValue;
1820 hi = rv / 127773;
1821 lo = rv % 127773;
1822 rv = 16807 * lo - 2836 * hi;
1823 if (rv <= 0)
1824 rv += 2147483647;
1825 RandomValue = rv;
1826 spin_unlock_irqrestore(&lock, flags);
1827 return rv;
1828}
1829
1830static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1831{
1832#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
1833 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
1834 == 50) {
1835 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
1836 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
1837 "Dropping cmd %p (tag %d) status", cmd, cmd->tag);
1838 }
1839#endif
1840 /*
1841 * It's currently not possible to simulate SRRs for FCP_WRITE without
1842 * a physical link layer failure, so don't even try here..
1843 */
1844 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
1845 return;
1846
1847 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
1848 ((qlt_srr_random() % 100) == 20)) {
1849 int i, leave = 0;
1850 unsigned int tot_len = 0;
1851
1852 while (leave == 0)
1853 leave = qlt_srr_random() % cmd->sg_cnt;
1854
1855 for (i = 0; i < leave; i++)
1856 tot_len += cmd->sg[i].length;
1857
1858 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
1859 "Cutting cmd %p (tag %d) buffer"
1860 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
1861 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
1862 cmd->bufflen, cmd->sg_cnt);
1863
1864 cmd->bufflen = tot_len;
1865 cmd->sg_cnt = leave;
1866 }
1867
1868 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
1869 unsigned int offset = qlt_srr_random() % cmd->bufflen;
1870
1871 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
1872 "Cutting cmd %p (tag %d) buffer head "
1873 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
1874 cmd->bufflen);
1875 if (offset == 0)
1876 *xmit_type &= ~QLA_TGT_XMIT_DATA;
1877 else if (qlt_set_data_offset(cmd, offset)) {
1878 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
1879 "qlt_set_data_offset() failed (tag %d)", cmd->tag);
1880 }
1881 }
1882}
1883#else
1884static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
1885{}
1886#endif
1887
1888static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
1889 struct qla_tgt_prm *prm)
1890{
1891 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
1892 (uint32_t)sizeof(ctio->u.status1.sense_data));
1893 ctio->u.status0.flags |=
1894 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
1895 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
1896 ctio->u.status0.flags |= __constant_cpu_to_le16(
1897 CTIO7_FLAGS_EXPLICIT_CONFORM |
1898 CTIO7_FLAGS_CONFORM_REQ);
1899 }
1900 ctio->u.status0.residual = cpu_to_le32(prm->residual);
1901 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
1902 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
1903 int i;
1904
1905 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
1906 if (prm->cmd->se_cmd.scsi_status != 0) {
1907 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
1908 "Skipping EXPLICIT_CONFORM and "
1909 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
1910 "non GOOD status\n");
1911 goto skip_explict_conf;
1912 }
1913 ctio->u.status1.flags |= __constant_cpu_to_le16(
1914 CTIO7_FLAGS_EXPLICIT_CONFORM |
1915 CTIO7_FLAGS_CONFORM_REQ);
1916 }
1917skip_explict_conf:
1918 ctio->u.status1.flags &=
1919 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1920 ctio->u.status1.flags |=
1921 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1922 ctio->u.status1.scsi_status |=
1923 __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
1924 ctio->u.status1.sense_length =
1925 cpu_to_le16(prm->sense_buffer_len);
1926 for (i = 0; i < prm->sense_buffer_len/4; i++)
1927 ((uint32_t *)ctio->u.status1.sense_data)[i] =
1928 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
1929#if 0
1930 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
1931 static int q;
1932 if (q < 10) {
1933 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
1934 "qla_target(%d): %d bytes of sense "
1935 "lost", prm->tgt->ha->vp_idx,
1936 prm->sense_buffer_len % 4);
1937 q++;
1938 }
1939 }
1940#endif
1941 } else {
1942 ctio->u.status1.flags &=
1943 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
1944 ctio->u.status1.flags |=
1945 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
1946 ctio->u.status1.sense_length = 0;
1947 memset(ctio->u.status1.sense_data, 0,
1948 sizeof(ctio->u.status1.sense_data));
1949 }
1950
1951 /* Sense with len > 24, is it possible ??? */
1952}
1953
f83adb61
QT		 1954
1955
1956/* diff */
1957static inline int
1958qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
1959{
1960 /*
1961 * Uncomment when corresponding SCSI changes are done.
1962 *
1963 if (!sp->cmd->prot_chk)
1964 return 0;
1965 *
1966 */
1967 switch (se_cmd->prot_op) {
1968 case TARGET_PROT_DOUT_INSERT:
1969 case TARGET_PROT_DIN_STRIP:
1970 if (ql2xenablehba_err_chk >= 1)
1971 return 1;
1972 break;
1973 case TARGET_PROT_DOUT_PASS:
1974 case TARGET_PROT_DIN_PASS:
1975 if (ql2xenablehba_err_chk >= 2)
1976 return 1;
1977 break;
1978 case TARGET_PROT_DIN_INSERT:
1979 case TARGET_PROT_DOUT_STRIP:
1980 return 1;
1981 default:
1982 break;
1983 }
1984 return 0;
1985}
1986
1987/*
1988 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
1989 *
1990 */
1991static inline void
1992qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
1993{
1994 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
1995
1996 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
1997 * have been immplemented by TCM, before AppTag is avail.
1998 * Look for modesense_handlers[]
1999 */
c7ee3bd4 2000 ctx->app_tag = 0;
f83adb61
QT		 2001 ctx->app_tag_mask[0] = 0x0;
2002 ctx->app_tag_mask[1] = 0x0;
2003
2004 switch (se_cmd->prot_type) {
2005 case TARGET_DIF_TYPE0_PROT:
2006 /*
2007 * No check for ql2xenablehba_err_chk, as it would be an
2008 * I/O error if hba tag generation is not done.
2009 */
2010 ctx->ref_tag = cpu_to_le32(lba);
2011
2012 if (!qlt_hba_err_chk_enabled(se_cmd))
2013 break;
2014
2015 /* enable ALL bytes of the ref tag */
2016 ctx->ref_tag_mask[0] = 0xff;
2017 ctx->ref_tag_mask[1] = 0xff;
2018 ctx->ref_tag_mask[2] = 0xff;
2019 ctx->ref_tag_mask[3] = 0xff;
2020 break;
2021 /*
2022 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2023 * 16 bit app tag.
2024 */
2025 case TARGET_DIF_TYPE1_PROT:
2026 ctx->ref_tag = cpu_to_le32(lba);
2027
2028 if (!qlt_hba_err_chk_enabled(se_cmd))
2029 break;
2030
2031 /* enable ALL bytes of the ref tag */
2032 ctx->ref_tag_mask[0] = 0xff;
2033 ctx->ref_tag_mask[1] = 0xff;
2034 ctx->ref_tag_mask[2] = 0xff;
2035 ctx->ref_tag_mask[3] = 0xff;
2036 break;
2037 /*
2038 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2039 * match LBA in CDB + N
2040 */
2041 case TARGET_DIF_TYPE2_PROT:
2042 ctx->ref_tag = cpu_to_le32(lba);
2043
2044 if (!qlt_hba_err_chk_enabled(se_cmd))
2045 break;
2046
2047 /* enable ALL bytes of the ref tag */
2048 ctx->ref_tag_mask[0] = 0xff;
2049 ctx->ref_tag_mask[1] = 0xff;
2050 ctx->ref_tag_mask[2] = 0xff;
2051 ctx->ref_tag_mask[3] = 0xff;
2052 break;
2053
2054 /* For Type 3 protection: 16 bit GUARD only */
2055 case TARGET_DIF_TYPE3_PROT:
2056 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2057 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2058 break;
2059 }
2060}
2061
2062
2063static inline int
2064qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2065{
2066 uint32_t *cur_dsd;
2067 int sgc;
2068 uint32_t transfer_length = 0;
2069 uint32_t data_bytes;
2070 uint32_t dif_bytes;
2071 uint8_t bundling = 1;
2072 uint8_t *clr_ptr;
2073 struct crc_context *crc_ctx_pkt = NULL;
2074 struct qla_hw_data *ha;
2075 struct ctio_crc2_to_fw *pkt;
2076 dma_addr_t crc_ctx_dma;
2077 uint16_t fw_prot_opts = 0;
2078 struct qla_tgt_cmd *cmd = prm->cmd;
2079 struct se_cmd *se_cmd = &cmd->se_cmd;
2080 uint32_t h;
2081 struct atio_from_isp *atio = &prm->cmd->atio;
c7ee3bd4 2082 uint16_t t16;
f83adb61
QT		 2083
2084 sgc = 0;
2085 ha = vha->hw;
2086
2087 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2088 prm->pkt = pkt;
2089 memset(pkt, 0, sizeof(*pkt));
2090
2091 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2092 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2093 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2094 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2095
2096 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2097 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2098 bundling = 0;
2099
2100 /* Compute dif len and adjust data len to incude protection */
2101 data_bytes = cmd->bufflen;
2102 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2103
2104 switch (se_cmd->prot_op) {
2105 case TARGET_PROT_DIN_INSERT:
2106 case TARGET_PROT_DOUT_STRIP:
2107 transfer_length = data_bytes;
2108 data_bytes += dif_bytes;
2109 break;
2110
2111 case TARGET_PROT_DIN_STRIP:
2112 case TARGET_PROT_DOUT_INSERT:
2113 case TARGET_PROT_DIN_PASS:
2114 case TARGET_PROT_DOUT_PASS:
2115 transfer_length = data_bytes + dif_bytes;
2116 break;
2117
2118 default:
2119 BUG();
2120 break;
2121 }
2122
2123 if (!qlt_hba_err_chk_enabled(se_cmd))
2124 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2125 /* HBA error checking enabled */
2126 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2127 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2128 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2129 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2130 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2131 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2132 }
2133
2134 switch (se_cmd->prot_op) {
2135 case TARGET_PROT_DIN_INSERT:
2136 case TARGET_PROT_DOUT_INSERT:
2137 fw_prot_opts |= PO_MODE_DIF_INSERT;
2138 break;
2139 case TARGET_PROT_DIN_STRIP:
2140 case TARGET_PROT_DOUT_STRIP:
2141 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2142 break;
2143 case TARGET_PROT_DIN_PASS:
2144 case TARGET_PROT_DOUT_PASS:
2145 fw_prot_opts |= PO_MODE_DIF_PASS;
2146 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2147 break;
2148 default:/* Normal Request */
2149 fw_prot_opts |= PO_MODE_DIF_PASS;
2150 break;
2151 }
2152
2153
2154 /* ---- PKT ---- */
2155 /* Update entry type to indicate Command Type CRC_2 IOCB */
2156 pkt->entry_type = CTIO_CRC2;
2157 pkt->entry_count = 1;
2158 pkt->vp_index = vha->vp_idx;
2159
2160 h = qlt_make_handle(vha);
2161 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2162 /*
2163 * CTIO type 7 from the firmware doesn't provide a way to
2164 * know the initiator's LOOP ID, hence we can't find
2165 * the session and, so, the command.
2166 */
2167 return -EAGAIN;
2168 } else
2169 ha->tgt.cmds[h-1] = prm->cmd;
2170
2171
2172 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2173 pkt->nport_handle = prm->cmd->loop_id;
2174 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2175 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2176 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2177 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2178 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2179
2180 /* silence compile warning */
2181 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2182 pkt->ox_id = cpu_to_le16(t16);
2183
2184 t16 = (atio->u.isp24.attr << 9);
2185 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2186 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2187
2188 /* Set transfer direction */
2189 if (cmd->dma_data_direction == DMA_TO_DEVICE)
2190 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN);
2191 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
2192 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
2193
2194
2195 pkt->dseg_count = prm->tot_dsds;
2196 /* Fibre channel byte count */
2197 pkt->transfer_length = cpu_to_le32(transfer_length);
2198
2199
2200 /* ----- CRC context -------- */
2201
2202 /* Allocate CRC context from global pool */
2203 crc_ctx_pkt = cmd->ctx =
2204 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2205
2206 if (!crc_ctx_pkt)
2207 goto crc_queuing_error;
2208
2209 /* Zero out CTX area. */
2210 clr_ptr = (uint8_t *)crc_ctx_pkt;
2211 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2212
2213 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2214 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2215
2216 /* Set handle */
2217 crc_ctx_pkt->handle = pkt->handle;
2218
2219 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2220
2221 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2222 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2223 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2224
2225
2226 if (!bundling) {
2227 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2228 } else {
2229 /*
2230 * Configure Bundling if we need to fetch interlaving
2231 * protection PCI accesses
2232 */
2233 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2234 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2235 crc_ctx_pkt->u.bundling.dseg_count =
2236 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2237 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2238 }
2239
2240 /* Finish the common fields of CRC pkt */
2241 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2242 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2243 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
2244 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0);
2245
2246
2247 /* Walks data segments */
2248 pkt->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
2249
2250 if (!bundling && prm->prot_seg_cnt) {
2251 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2252 prm->tot_dsds, cmd))
2253 goto crc_queuing_error;
2254 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2255 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2256 goto crc_queuing_error;
2257
2258 if (bundling && prm->prot_seg_cnt) {
2259 /* Walks dif segments */
c7ee3bd4 2260 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2261
2262 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2263 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2264 prm->prot_seg_cnt, cmd))
2265 goto crc_queuing_error;
2266 }
2267 return QLA_SUCCESS;
2268
2269crc_queuing_error:
2270 /* Cleanup will be performed by the caller */
2271
2272 return QLA_FUNCTION_FAILED;
2273}
2274
2275
2d70c103
NB		 2276/*
2277 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2278 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2279 */
2280int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2281 uint8_t scsi_status)
2282{
2283 struct scsi_qla_host *vha = cmd->vha;
2284 struct qla_hw_data *ha = vha->hw;
2285 struct ctio7_to_24xx *pkt;
2286 struct qla_tgt_prm prm;
2287 uint32_t full_req_cnt = 0;
2288 unsigned long flags = 0;
2289 int res;
2290
2291 memset(&prm, 0, sizeof(prm));
2292 qlt_check_srr_debug(cmd, &xmit_type);
2293
2294 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 2295 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2296 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2297 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2298 &cmd->se_cmd);
2d70c103
NB		 2299
2300 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2301 &full_req_cnt);
2302 if (unlikely(res != 0)) {
2303 if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
2304 return 0;
2305
2306 return res;
2307 }
2308
2309 spin_lock_irqsave(&ha->hardware_lock, flags);
2310
2311 /* Does F/W have an IOCBs for this request */
2312 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2313 if (unlikely(res))
2314 goto out_unmap_unlock;
2315
f83adb61
QT		 2316 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2317 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2318 else
2319 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103
NB		 2320 if (unlikely(res != 0))
2321 goto out_unmap_unlock;
2322
2323
2324 pkt = (struct ctio7_to_24xx *)prm.pkt;
2325
2326 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2327 pkt->u.status0.flags |=
2328 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2329 CTIO7_FLAGS_STATUS_MODE_0);
2330
f83adb61
QT		 2331 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2332 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2333
2334 if (prm.add_status_pkt == 0) {
2335 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2336 pkt->u.status0.scsi_status =
2337 cpu_to_le16(prm.rq_result);
2338 pkt->u.status0.residual =
2339 cpu_to_le32(prm.residual);
2340 pkt->u.status0.flags |= __constant_cpu_to_le16(
2341 CTIO7_FLAGS_SEND_STATUS);
2342 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2343 pkt->u.status0.flags |=
2344 __constant_cpu_to_le16(
2345 CTIO7_FLAGS_EXPLICIT_CONFORM |
2346 CTIO7_FLAGS_CONFORM_REQ);
2347 }
2348 }
2349
2350 } else {
2351 /*
2352 * We have already made sure that there is sufficient
2353 * amount of request entries to not drop HW lock in
2354 * req_pkt().
2355 */
2356 struct ctio7_to_24xx *ctio =
2357 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2358
2359 ql_dbg(ql_dbg_tgt, vha, 0xe019,
2360 "Building additional status packet\n");
2361
f83adb61
QT		 2362 /*
2363 * T10Dif: ctio_crc2_to_fw overlay ontop of
2364 * ctio7_to_24xx
2365 */
2d70c103 2366 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 2367 /* reset back to CTIO7 */
2d70c103 2368 ctio->entry_count = 1;
f83adb61 2369 ctio->entry_type = CTIO_TYPE7;
2d70c103
NB		 2370 ctio->dseg_count = 0;
2371 ctio->u.status1.flags &= ~__constant_cpu_to_le16(
2372 CTIO7_FLAGS_DATA_IN);
2373
2374 /* Real finish is ctio_m1's finish */
2375 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
2376 pkt->u.status0.flags |= __constant_cpu_to_le16(
2377 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 2378
2379 /* qlt_24xx_init_ctio_to_isp will correct
2380 * all neccessary fields that's part of CTIO7.
2381 * There should be no residual of CTIO-CRC2 data.
2382 */
2d70c103
NB		 2383 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2384 &prm);
2385 pr_debug("Status CTIO7: %p\n", ctio);
2386 }
2387 } else
2388 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2389
2390
2391 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
2392
2393 ql_dbg(ql_dbg_tgt, vha, 0xe01a,
2394 "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
2395 pkt, scsi_status);
2396
2397 qla2x00_start_iocbs(vha, vha->req);
2398 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2399
2400 return 0;
2401
2402out_unmap_unlock:
2403 if (cmd->sg_mapped)
2404 qlt_unmap_sg(vha, cmd);
2405 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2406
2407 return res;
2408}
2409EXPORT_SYMBOL(qlt_xmit_response);
2410
2411int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2412{
2413 struct ctio7_to_24xx *pkt;
2414 struct scsi_qla_host *vha = cmd->vha;
2415 struct qla_hw_data *ha = vha->hw;
2416 struct qla_tgt *tgt = cmd->tgt;
2417 struct qla_tgt_prm prm;
2418 unsigned long flags;
2419 int res = 0;
2420
2421 memset(&prm, 0, sizeof(prm));
2422 prm.cmd = cmd;
2423 prm.tgt = tgt;
2424 prm.sg = NULL;
2425 prm.req_cnt = 1;
2426
2427 /* Send marker if required */
2428 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2429 return -EIO;
2430
f83adb61
QT		 2431 ql_dbg(ql_dbg_tgt, vha, 0xe01b,
2432 "%s: CTIO_start: vha(%d) se_cmd %p ox_id %04x\n",
2433 __func__, (int)vha->vp_idx, &cmd->se_cmd,
2434 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103
NB		 2435
2436 /* Calculate number of entries and segments required */
2437 if (qlt_pci_map_calc_cnt(&prm) != 0)
2438 return -EAGAIN;
2439
2440 spin_lock_irqsave(&ha->hardware_lock, flags);
2441
2442 /* Does F/W have an IOCBs for this request */
2443 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2444 if (res != 0)
2445 goto out_unlock_free_unmap;
f83adb61
QT		 2446 if (cmd->se_cmd.prot_op)
2447 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2448 else
2449 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 2450
2d70c103
NB		 2451 if (unlikely(res != 0))
2452 goto out_unlock_free_unmap;
2453 pkt = (struct ctio7_to_24xx *)prm.pkt;
2454 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2455 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 2456
2457 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2458 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2459
2460 cmd->state = QLA_TGT_STATE_NEED_DATA;
2461
2462 qla2x00_start_iocbs(vha, vha->req);
2463 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2464
2465 return res;
2466
2467out_unlock_free_unmap:
2468 if (cmd->sg_mapped)
2469 qlt_unmap_sg(vha, cmd);
2470 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2471
2472 return res;
2473}
2474EXPORT_SYMBOL(qlt_rdy_to_xfer);
2475
f83adb61
QT		 2476
2477/*
2478 * Checks the guard or meta-data for the type of error
2479 * detected by the HBA.
2480 */
2481static inline int
2482qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2483 struct ctio_crc_from_fw *sts)
2484{
2485 uint8_t *ap = &sts->actual_dif[0];
2486 uint8_t *ep = &sts->expected_dif[0];
2487 uint32_t e_ref_tag, a_ref_tag;
2488 uint16_t e_app_tag, a_app_tag;
2489 uint16_t e_guard, a_guard;
2490 uint64_t lba = cmd->se_cmd.t_task_lba;
2491
2492 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2493 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2494 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2495
2496 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2497 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2498 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2499
2500 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2501 "iocb(s) %p Returned STATUS.\n", sts);
2502
2503 ql_dbg(ql_dbg_tgt, vha, 0xf075,
fc385045 2504 "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		 2505 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2506 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2507
2508 /*
2509 * Ignore sector if:
2510 * For type 3: ref & app tag is all 'f's
2511 * For type 0,1,2: app tag is all 'f's
2512 */
2513 if ((a_app_tag == 0xffff) &&
2514 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2515 (a_ref_tag == 0xffffffff))) {
2516 uint32_t blocks_done;
2517
2518 /* 2TB boundary case covered automatically with this */
2519 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2520 cmd->se_cmd.bad_sector = e_ref_tag;
2521 cmd->se_cmd.pi_err = 0;
2522 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2523 "need to return scsi good\n");
2524
2525 /* Update protection tag */
2526 if (cmd->prot_sg_cnt) {
2527 uint32_t i, j = 0, k = 0, num_ent;
2528 struct scatterlist *sg, *sgl;
2529
2530
2531 sgl = cmd->prot_sg;
2532
2533 /* Patch the corresponding protection tags */
2534 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2535 num_ent = sg_dma_len(sg) / 8;
2536 if (k + num_ent < blocks_done) {
2537 k += num_ent;
2538 continue;
2539 }
2540 j = blocks_done - k - 1;
2541 k = blocks_done;
2542 break;
2543 }
2544
2545 if (k != blocks_done) {
2546 ql_log(ql_log_warn, vha, 0xf076,
2547 "unexpected tag values tag:lba=%u:%llu)\n",
2548 e_ref_tag, (unsigned long long)lba);
2549 goto out;
2550 }
2551
2552#if 0
2553 struct sd_dif_tuple *spt;
2554 /* TODO:
2555 * This section came from initiator. Is it valid here?
2556 * should ulp be override with actual val???
2557 */
2558 spt = page_address(sg_page(sg)) + sg->offset;
2559 spt += j;
2560
2561 spt->app_tag = 0xffff;
2562 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2563 spt->ref_tag = 0xffffffff;
2564#endif
2565 }
2566
2567 return 0;
2568 }
2569
2570 /* check guard */
2571 if (e_guard != a_guard) {
2572 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2573 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2574
2575 ql_log(ql_log_warn, vha, 0xe076,
2576 "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",
2577 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2578 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2579 a_guard, e_guard, cmd);
2580 goto out;
2581 }
2582
2583 /* check ref tag */
2584 if (e_ref_tag != a_ref_tag) {
2585 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
2586 cmd->se_cmd.bad_sector = e_ref_tag;
2587
2588 ql_log(ql_log_warn, vha, 0xe077,
2589 "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",
2590 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2591 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2592 a_guard, e_guard, cmd);
2593 goto out;
2594 }
2595
2596 /* check appl tag */
2597 if (e_app_tag != a_app_tag) {
2598 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
2599 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2600
2601 ql_log(ql_log_warn, vha, 0xe078,
2602 "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",
2603 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2604 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2605 a_guard, e_guard, cmd);
2606 goto out;
2607 }
2608out:
2609 return 1;
2610}
2611
2612
2d70c103
NB		 2613/* If hardware_lock held on entry, might drop it, then reaquire */
2614/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
2615static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
2616 struct qla_tgt_cmd *cmd,
2617 struct atio_from_isp *atio)
2618{
2619 struct ctio7_to_24xx *ctio24;
2620 struct qla_hw_data *ha = vha->hw;
2621 request_t *pkt;
2622 int ret = 0;
33a5fcee 2623 uint16_t temp;
2d70c103
NB		 2624
2625 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2626
2627 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
2628 if (pkt == NULL) {
2629 ql_dbg(ql_dbg_tgt, vha, 0xe050,
2630 "qla_target(%d): %s failed: unable to allocate "
2631 "request packet\n", vha->vp_idx, __func__);
2632 return -ENOMEM;
2633 }
2634
2635 if (cmd != NULL) {
2636 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
2637 ql_dbg(ql_dbg_tgt, vha, 0xe051,
2638 "qla_target(%d): Terminating cmd %p with "
2639 "incorrect state %d\n", vha->vp_idx, cmd,
2640 cmd->state);
2641 } else
2642 ret = 1;
2643 }
2644
2645 pkt->entry_count = 1;
2646 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2647
2648 ctio24 = (struct ctio7_to_24xx *)pkt;
2649 ctio24->entry_type = CTIO_TYPE7;
2650 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
2651 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
2652 ctio24->vp_index = vha->vp_idx;
2653 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2654 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2655 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2656 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
2657 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
2658 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2659 CTIO7_FLAGS_TERMINATE);
33a5fcee
QT		 2660 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2661 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2662
2663 /* Most likely, it isn't needed */
2664 ctio24->u.status1.residual = get_unaligned((uint32_t *)
2665 &atio->u.isp24.fcp_cmnd.add_cdb[
2666 atio->u.isp24.fcp_cmnd.add_cdb_len]);
2667 if (ctio24->u.status1.residual != 0)
2668 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
2669
2670 qla2x00_start_iocbs(vha, vha->req);
2671 return ret;
2672}
2673
2674static void qlt_send_term_exchange(struct scsi_qla_host *vha,
2675 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
2676{
2677 unsigned long flags;
2678 int rc;
2679
2680 if (qlt_issue_marker(vha, ha_locked) < 0)
2681 return;
2682
2683 if (ha_locked) {
2684 rc = __qlt_send_term_exchange(vha, cmd, atio);
2685 goto done;
2686 }
2687 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
2688 rc = __qlt_send_term_exchange(vha, cmd, atio);
2689 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
2690done:
7b898542
QT		 2691 /*
2692 * Terminate exchange will tell fw to release any active CTIO
2693 * that's in FW posession and cleanup the exchange.
2694 *
2695 * "cmd->state == QLA_TGT_STATE_ABORTED" means CTIO is still
2696 * down at FW. Free the cmd later when CTIO comes back later
2697 * w/aborted(0x2) status.
2698 *
2699 * "cmd->state != QLA_TGT_STATE_ABORTED" means CTIO is already
2700 * back w/some err. Free the cmd now.
2701 */
2702 if ((rc == 1) && (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 2703 if (!ha_locked && !in_interrupt())
2704 msleep(250); /* just in case */
2705
f83adb61
QT		 2706 if (cmd->sg_mapped)
2707 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2708 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2709 }
7b898542 2710 return;
2d70c103
NB		 2711}
2712
2713void qlt_free_cmd(struct qla_tgt_cmd *cmd)
2714{
51a07f84
NB		 2715 struct qla_tgt_sess *sess = cmd->sess;
2716
f83adb61
QT		 2717 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
2718 "%s: se_cmd[%p] ox_id %04x\n",
2719 __func__, &cmd->se_cmd,
2720 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 2721
f83adb61 2722 BUG_ON(cmd->sg_mapped);
2d70c103
NB		 2723 if (unlikely(cmd->free_sg))
2724 kfree(cmd->sg);
51a07f84
NB		 2725
2726 if (!sess || !sess->se_sess) {
2727 WARN_ON(1);
2728 return;
2729 }
2730 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 2731}
2732EXPORT_SYMBOL(qlt_free_cmd);
2733
2734/* ha->hardware_lock supposed to be held on entry */
2735static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
2736 struct qla_tgt_cmd *cmd, void *ctio)
2737{
2738 struct qla_tgt_srr_ctio *sc;
0e8cd71c 2739 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 2740 struct qla_tgt_srr_imm *imm;
2741
2742 tgt->ctio_srr_id++;
2743
2744 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
2745 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
2746
2747 if (!ctio) {
2748 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
2749 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
2750 vha->vp_idx);
2751 return -EINVAL;
2752 }
2753
2754 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
2755 if (sc != NULL) {
2756 sc->cmd = cmd;
2757 /* IRQ is already OFF */
2758 spin_lock(&tgt->srr_lock);
2759 sc->srr_id = tgt->ctio_srr_id;
2760 list_add_tail(&sc->srr_list_entry,
2761 &tgt->srr_ctio_list);
2762 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
2763 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
2764 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
2765 int found = 0;
2766 list_for_each_entry(imm, &tgt->srr_imm_list,
2767 srr_list_entry) {
2768 if (imm->srr_id == sc->srr_id) {
2769 found = 1;
2770 break;
2771 }
2772 }
2773 if (found) {
2774 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
2775 "Scheduling srr work\n");
2776 schedule_work(&tgt->srr_work);
2777 } else {
2778 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
2779 "qla_target(%d): imm_srr_id "
2780 "== ctio_srr_id (%d), but there is no "
2781 "corresponding SRR IMM, deleting CTIO "
2782 "SRR %p\n", vha->vp_idx,
2783 tgt->ctio_srr_id, sc);
2784 list_del(&sc->srr_list_entry);
2785 spin_unlock(&tgt->srr_lock);
2786
2787 kfree(sc);
2788 return -EINVAL;
2789 }
2790 }
2791 spin_unlock(&tgt->srr_lock);
2792 } else {
2793 struct qla_tgt_srr_imm *ti;
2794
2795 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
2796 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
2797 vha->vp_idx);
2798 spin_lock(&tgt->srr_lock);
2799 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
2800 srr_list_entry) {
2801 if (imm->srr_id == tgt->ctio_srr_id) {
2802 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
2803 "IMM SRR %p deleted (id %d)\n",
2804 imm, imm->srr_id);
2805 list_del(&imm->srr_list_entry);
2806 qlt_reject_free_srr_imm(vha, imm, 1);
2807 }
2808 }
2809 spin_unlock(&tgt->srr_lock);
2810
2811 return -ENOMEM;
2812 }
2813
2814 return 0;
2815}
2816
2817/*
2818 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2819 */
2820static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
2821 struct qla_tgt_cmd *cmd, uint32_t status)
2822{
2823 int term = 0;
2824
2825 if (ctio != NULL) {
2826 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
2827 term = !(c->flags &
2828 __constant_cpu_to_le16(OF_TERM_EXCH));
2829 } else
2830 term = 1;
2831
2832 if (term)
2833 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2834
2835 return term;
2836}
2837
2838/* ha->hardware_lock supposed to be held on entry */
2839static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
2840 uint32_t handle)
2841{
2842 struct qla_hw_data *ha = vha->hw;
2843
2844 handle--;
2845 if (ha->tgt.cmds[handle] != NULL) {
2846 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
2847 ha->tgt.cmds[handle] = NULL;
2848 return cmd;
2849 } else
2850 return NULL;
2851}
2852
2853/* ha->hardware_lock supposed to be held on entry */
2854static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
2855 uint32_t handle, void *ctio)
2856{
2857 struct qla_tgt_cmd *cmd = NULL;
2858
2859 /* Clear out internal marks */
2860 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
2861 CTIO_INTERMEDIATE_HANDLE_MARK);
2862
2863 if (handle != QLA_TGT_NULL_HANDLE) {
2864 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
2865 ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
2866 "SKIP_HANDLE CTIO\n");
2867 return NULL;
2868 }
2869 /* handle-1 is actually used */
8d93f550 2870 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 2871 ql_dbg(ql_dbg_tgt, vha, 0xe052,
2872 "qla_target(%d): Wrong handle %x received\n",
2873 vha->vp_idx, handle);
2874 return NULL;
2875 }
2876 cmd = qlt_get_cmd(vha, handle);
2877 if (unlikely(cmd == NULL)) {
2878 ql_dbg(ql_dbg_tgt, vha, 0xe053,
2879 "qla_target(%d): Suspicious: unable to "
2880 "find the command with handle %x\n", vha->vp_idx,
2881 handle);
2882 return NULL;
2883 }
2884 } else if (ctio != NULL) {
2885 /* We can't get loop ID from CTIO7 */
2886 ql_dbg(ql_dbg_tgt, vha, 0xe054,
2887 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
2888 "support NULL handles\n", vha->vp_idx);
2889 return NULL;
2890 }
2891
2892 return cmd;
2893}
2894
2895/*
2896 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2897 */
2898static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
2899 uint32_t status, void *ctio)
2900{
2901 struct qla_hw_data *ha = vha->hw;
2902 struct se_cmd *se_cmd;
2903 struct target_core_fabric_ops *tfo;
2904 struct qla_tgt_cmd *cmd;
2905
2906 ql_dbg(ql_dbg_tgt, vha, 0xe01e,
2907 "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
2908 vha->vp_idx, ctio, status, handle);
2909
2910 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
2911 /* That could happen only in case of an error/reset/abort */
2912 if (status != CTIO_SUCCESS) {
2913 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
2914 "Intermediate CTIO received"
2915 " (status %x)\n", status);
2916 }
2917 return;
2918 }
2919
2920 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 2921 if (cmd == NULL)
2d70c103 2922 return;
092e1dc3 2923
2d70c103
NB		 2924 se_cmd = &cmd->se_cmd;
2925 tfo = se_cmd->se_tfo;
2926
2927 if (cmd->sg_mapped)
2928 qlt_unmap_sg(vha, cmd);
2929
2930 if (unlikely(status != CTIO_SUCCESS)) {
2931 switch (status & 0xFFFF) {
2932 case CTIO_LIP_RESET:
2933 case CTIO_TARGET_RESET:
2934 case CTIO_ABORTED:
7b898542 2935 /* driver request abort via Terminate exchange */
2d70c103
NB		 2936 case CTIO_TIMEOUT:
2937 case CTIO_INVALID_RX_ID:
2938 /* They are OK */
2939 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
2940 "qla_target(%d): CTIO with "
2941 "status %#x received, state %x, se_cmd %p, "
2942 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
2943 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
2944 status, cmd->state, se_cmd);
2945 break;
2946
2947 case CTIO_PORT_LOGGED_OUT:
2948 case CTIO_PORT_UNAVAILABLE:
2949 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
2950 "qla_target(%d): CTIO with PORT LOGGED "
2951 "OUT (29) or PORT UNAVAILABLE (28) status %x "
2952 "received (state %x, se_cmd %p)\n", vha->vp_idx,
2953 status, cmd->state, se_cmd);
2954 break;
2955
2956 case CTIO_SRR_RECEIVED:
2957 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
2958 "qla_target(%d): CTIO with SRR_RECEIVED"
2959 " status %x received (state %x, se_cmd %p)\n",
2960 vha->vp_idx, status, cmd->state, se_cmd);
2961 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
2962 break;
2963 else
2964 return;
2965
f83adb61
QT		 2966 case CTIO_DIF_ERROR: {
2967 struct ctio_crc_from_fw *crc =
2968 (struct ctio_crc_from_fw *)ctio;
2969 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
2970 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
2971 vha->vp_idx, status, cmd->state, se_cmd,
2972 *((u64 *)&crc->actual_dif[0]),
2973 *((u64 *)&crc->expected_dif[0]));
2974
2975 if (qlt_handle_dif_error(vha, cmd, ctio)) {
2976 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2977 /* scsi Write/xfer rdy complete */
2978 goto skip_term;
2979 } else {
2980 /* scsi read/xmit respond complete
2981 * call handle dif to send scsi status
2982 * rather than terminate exchange.
2983 */
2984 cmd->state = QLA_TGT_STATE_PROCESSED;
2985 ha->tgt.tgt_ops->handle_dif_err(cmd);
2986 return;
2987 }
2988 } else {
2989 /* Need to generate a SCSI good completion.
2990 * because FW did not send scsi status.
2991 */
2992 status = 0;
2993 goto skip_term;
2994 }
2995 break;
2996 }
2d70c103
NB		 2997 default:
2998 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 2999 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3000 vha->vp_idx, status, cmd->state, se_cmd);
3001 break;
3002 }
3003
7b898542
QT		 3004
3005 /* "cmd->state == QLA_TGT_STATE_ABORTED" means
3006 * cmd is already aborted/terminated, we don't
3007 * need to terminate again. The exchange is already
3008 * cleaned up/freed at FW level. Just cleanup at driver
3009 * level.
3010 */
3011 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
3012 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3013 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3014 return;
7b898542 3015 }
2d70c103 3016 }
f83adb61 3017skip_term:
2d70c103
NB		 3018
3019 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3020 ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
3021 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3022 int rx_status = 0;
3023
3024 cmd->state = QLA_TGT_STATE_DATA_IN;
3025
3026 if (unlikely(status != CTIO_SUCCESS))
3027 rx_status = -EIO;
3028 else
3029 cmd->write_data_transferred = 1;
3030
3031 ql_dbg(ql_dbg_tgt, vha, 0xe020,
3032 "Data received, context %x, rx_status %d\n",
3033 0x0, rx_status);
3034
3035 ha->tgt.tgt_ops->handle_data(cmd);
3036 return;
3037 } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
3038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
3039 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
3040 } else {
3041 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3042 "qla_target(%d): A command in state (%d) should "
3043 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3044 }
3045
7b898542
QT		 3046 if (unlikely(status != CTIO_SUCCESS) &&
3047 (cmd->state != QLA_TGT_STATE_ABORTED)) {
2d70c103
NB		 3048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3049 dump_stack();
3050 }
3051
3052 ha->tgt.tgt_ops->free_cmd(cmd);
3053}
3054
2d70c103
NB		 3055static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3056 uint8_t task_codes)
3057{
3058 int fcp_task_attr;
3059
3060 switch (task_codes) {
3061 case ATIO_SIMPLE_QUEUE:
3062 fcp_task_attr = MSG_SIMPLE_TAG;
3063 break;
3064 case ATIO_HEAD_OF_QUEUE:
3065 fcp_task_attr = MSG_HEAD_TAG;
3066 break;
3067 case ATIO_ORDERED_QUEUE:
3068 fcp_task_attr = MSG_ORDERED_TAG;
3069 break;
3070 case ATIO_ACA_QUEUE:
3071 fcp_task_attr = MSG_ACA_TAG;
3072 break;
3073 case ATIO_UNTAGGED:
3074 fcp_task_attr = MSG_SIMPLE_TAG;
3075 break;
3076 default:
3077 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3078 "qla_target: unknown task code %x, use ORDERED instead\n",
3079 task_codes);
3080 fcp_task_attr = MSG_ORDERED_TAG;
3081 break;
3082 }
3083
3084 return fcp_task_attr;
3085}
3086
3087static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3088 uint8_t *);
3089/*
3090 * Process context for I/O path into tcm_qla2xxx code
3091 */
51a07f84 3092static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3093{
2d70c103
NB		 3094 scsi_qla_host_t *vha = cmd->vha;
3095 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3096 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3097 struct qla_tgt_sess *sess = cmd->sess;
2d70c103
NB		 3098 struct atio_from_isp *atio = &cmd->atio;
3099 unsigned char *cdb;
3100 unsigned long flags;
3101 uint32_t data_length;
3102 int ret, fcp_task_attr, data_dir, bidi = 0;
3103
3104 if (tgt->tgt_stop)
3105 goto out_term;
3106
2d70c103
NB		 3107 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
3108 cmd->tag = atio->u.isp24.exchange_addr;
3109 cmd->unpacked_lun = scsilun_to_int(
3110 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3111
3112 if (atio->u.isp24.fcp_cmnd.rddata &&
3113 atio->u.isp24.fcp_cmnd.wrdata) {
3114 bidi = 1;
3115 data_dir = DMA_TO_DEVICE;
3116 } else if (atio->u.isp24.fcp_cmnd.rddata)
3117 data_dir = DMA_FROM_DEVICE;
3118 else if (atio->u.isp24.fcp_cmnd.wrdata)
3119 data_dir = DMA_TO_DEVICE;
3120 else
3121 data_dir = DMA_NONE;
3122
3123 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3124 atio->u.isp24.fcp_cmnd.task_attr);
3125 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3126 &atio->u.isp24.fcp_cmnd.add_cdb[
3127 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3128
3129 ql_dbg(ql_dbg_tgt, vha, 0xe022,
f83adb61
QT		 3130 "qla_target: START qla cmd: %p se_cmd %p lun: 0x%04x (tag %d) len(%d) ox_id %x\n",
3131 cmd, &cmd->se_cmd, cmd->unpacked_lun, cmd->tag, data_length,
3132 cmd->atio.u.isp24.fcp_hdr.ox_id);
2d70c103 3133
51a07f84
NB		 3134 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3135 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 3136 if (ret != 0)
3137 goto out_term;
3138 /*
3139 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3140 */
08234e3a 3141 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 3142 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 3143 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 3144 return;
3145
3146out_term:
3147 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
3148 /*
fae9eaf8
RD		 3149 * cmd has not sent to target yet, so pass NULL as the second
3150 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103
NB		 3151 */
3152 spin_lock_irqsave(&ha->hardware_lock, flags);
3153 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
51a07f84
NB		 3154 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
3155 ha->tgt.tgt_ops->put_sess(sess);
3156 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3157}
3158
3159static void qlt_do_work(struct work_struct *work)
3160{
3161 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
3162
3163 __qlt_do_work(cmd);
3164}
3165
3166static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
3167 struct qla_tgt_sess *sess,
3168 struct atio_from_isp *atio)
3169{
3170 struct se_session *se_sess = sess->se_sess;
3171 struct qla_tgt_cmd *cmd;
3172 int tag;
3173
3174 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3175 if (tag < 0)
3176 return NULL;
3177
3178 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3179 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3180
3181 memcpy(&cmd->atio, atio, sizeof(*atio));
3182 cmd->state = QLA_TGT_STATE_NEW;
3183 cmd->tgt = vha->vha_tgt.qla_tgt;
3184 cmd->vha = vha;
3185 cmd->se_cmd.map_tag = tag;
3186 cmd->sess = sess;
3187 cmd->loop_id = sess->loop_id;
3188 cmd->conf_compl_supported = sess->conf_compl_supported;
3189
3190 return cmd;
3191}
3192
3193static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
3194 uint16_t);
3195
3196static void qlt_create_sess_from_atio(struct work_struct *work)
3197{
3198 struct qla_tgt_sess_op *op = container_of(work,
3199 struct qla_tgt_sess_op, work);
3200 scsi_qla_host_t *vha = op->vha;
3201 struct qla_hw_data *ha = vha->hw;
3202 struct qla_tgt_sess *sess;
3203 struct qla_tgt_cmd *cmd;
3204 unsigned long flags;
3205 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
3206
3207 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
3208 "qla_target(%d): Unable to find wwn login"
3209 " (s_id %x:%x:%x), trying to create it manually\n",
3210 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
3211
3212 if (op->atio.u.raw.entry_count > 1) {
3213 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
3214 "Dropping multy entry atio %p\n", &op->atio);
3215 goto out_term;
3216 }
3217
3218 mutex_lock(&vha->vha_tgt.tgt_mutex);
3219 sess = qlt_make_local_sess(vha, s_id);
3220 /* sess has an extra creation ref. */
3221 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3222
3223 if (!sess)
3224 goto out_term;
3225 /*
3226 * Now obtain a pre-allocated session tag using the original op->atio
3227 * packet header, and dispatch into __qlt_do_work() using the existing
3228 * process context.
3229 */
3230 cmd = qlt_get_tag(vha, sess, &op->atio);
3231 if (!cmd) {
3232 spin_lock_irqsave(&ha->hardware_lock, flags);
3233 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
2d70c103 3234 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 3235 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3236 kfree(op);
3237 return;
3238 }
3239 /*
3240 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release
3241 * the extra reference taken above by qlt_make_local_sess()
3242 */
3243 __qlt_do_work(cmd);
3244 kfree(op);
3245 return;
3246
3247out_term:
3248 spin_lock_irqsave(&ha->hardware_lock, flags);
3249 qlt_send_term_exchange(vha, NULL, &op->atio, 1);
08234e3a 3250 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84
NB		 3251 kfree(op);
3252
2d70c103
NB		 3253}
3254
3255/* ha->hardware_lock supposed to be held on entry */
3256static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3257 struct atio_from_isp *atio)
3258{
51a07f84 3259 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3260 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3261 struct qla_tgt_sess *sess;
2d70c103
NB		 3262 struct qla_tgt_cmd *cmd;
3263
3264 if (unlikely(tgt->tgt_stop)) {
3265 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
3266 "New command while device %p is shutting down\n", tgt);
3267 return -EFAULT;
3268 }
3269
51a07f84
NB		 3270 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
3271 if (unlikely(!sess)) {
3272 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
3273 GFP_ATOMIC);
3274 if (!op)
3275 return -ENOMEM;
3276
3277 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 3278 op->vha = vha;
51a07f84
NB		 3279 INIT_WORK(&op->work, qlt_create_sess_from_atio);
3280 queue_work(qla_tgt_wq, &op->work);
3281 return 0;
3282 }
3283 /*
3284 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
3285 */
3286 kref_get(&sess->se_sess->sess_kref);
3287
3288 cmd = qlt_get_tag(vha, sess, atio);
2d70c103
NB		 3289 if (!cmd) {
3290 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
3291 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
51a07f84 3292 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 3293 return -ENOMEM;
3294 }
3295
2d70c103
NB		 3296 INIT_WORK(&cmd->work, qlt_do_work);
3297 queue_work(qla_tgt_wq, &cmd->work);
3298 return 0;
3299
3300}
3301
3302/* ha->hardware_lock supposed to be held on entry */
3303static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
3304 int fn, void *iocb, int flags)
3305{
3306 struct scsi_qla_host *vha = sess->vha;
3307 struct qla_hw_data *ha = vha->hw;
3308 struct qla_tgt_mgmt_cmd *mcmd;
3309 int res;
3310 uint8_t tmr_func;
3311
3312 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3313 if (!mcmd) {
3314 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
3315 "qla_target(%d): Allocation of management "
3316 "command failed, some commands and their data could "
3317 "leak\n", vha->vp_idx);
3318 return -ENOMEM;
3319 }
3320 memset(mcmd, 0, sizeof(*mcmd));
3321 mcmd->sess = sess;
3322
3323 if (iocb) {
3324 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3325 sizeof(mcmd->orig_iocb.imm_ntfy));
3326 }
3327 mcmd->tmr_func = fn;
3328 mcmd->flags = flags;
3329
3330 switch (fn) {
3331 case QLA_TGT_CLEAR_ACA:
3332 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
3333 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
3334 tmr_func = TMR_CLEAR_ACA;
3335 break;
3336
3337 case QLA_TGT_TARGET_RESET:
3338 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
3339 "qla_target(%d): TARGET_RESET received\n",
3340 sess->vha->vp_idx);
3341 tmr_func = TMR_TARGET_WARM_RESET;
3342 break;
3343
3344 case QLA_TGT_LUN_RESET:
3345 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
3346 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
3347 tmr_func = TMR_LUN_RESET;
3348 break;
3349
3350 case QLA_TGT_CLEAR_TS:
3351 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
3352 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
3353 tmr_func = TMR_CLEAR_TASK_SET;
3354 break;
3355
3356 case QLA_TGT_ABORT_TS:
3357 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
3358 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
3359 tmr_func = TMR_ABORT_TASK_SET;
3360 break;
3361#if 0
3362 case QLA_TGT_ABORT_ALL:
3363 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
3364 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
3365 sess->vha->vp_idx);
3366 tmr_func = 0;
3367 break;
3368
3369 case QLA_TGT_ABORT_ALL_SESS:
3370 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
3371 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
3372 sess->vha->vp_idx);
3373 tmr_func = 0;
3374 break;
3375
3376 case QLA_TGT_NEXUS_LOSS_SESS:
3377 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
3378 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
3379 sess->vha->vp_idx);
3380 tmr_func = 0;
3381 break;
3382
3383 case QLA_TGT_NEXUS_LOSS:
3384 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
3385 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
3386 tmr_func = 0;
3387 break;
3388#endif
3389 default:
3390 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
3391 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
3392 sess->vha->vp_idx, fn);
3393 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3394 return -ENOSYS;
3395 }
3396
3397 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
3398 if (res != 0) {
3399 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
3400 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
3401 sess->vha->vp_idx, res);
3402 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3403 return -EFAULT;
3404 }
3405
3406 return 0;
3407}
3408
3409/* ha->hardware_lock supposed to be held on entry */
3410static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
3411{
3412 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3413 struct qla_hw_data *ha = vha->hw;
3414 struct qla_tgt *tgt;
3415 struct qla_tgt_sess *sess;
3416 uint32_t lun, unpacked_lun;
3417 int lun_size, fn;
3418
0e8cd71c 3419 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3420
3421 lun = a->u.isp24.fcp_cmnd.lun;
3422 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
3423 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
3424 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
3425 a->u.isp24.fcp_hdr.s_id);
3426 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3427
3428 if (!sess) {
3429 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
3430 "qla_target(%d): task mgmt fn 0x%x for "
3431 "non-existant session\n", vha->vp_idx, fn);
3432 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
3433 sizeof(struct atio_from_isp));
3434 }
3435
3436 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
3437}
3438
3439/* ha->hardware_lock supposed to be held on entry */
3440static int __qlt_abort_task(struct scsi_qla_host *vha,
3441 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
3442{
3443 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
3444 struct qla_hw_data *ha = vha->hw;
3445 struct qla_tgt_mgmt_cmd *mcmd;
3446 uint32_t lun, unpacked_lun;
3447 int rc;
3448
3449 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
3450 if (mcmd == NULL) {
3451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
3452 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
3453 vha->vp_idx, __func__);
3454 return -ENOMEM;
3455 }
3456 memset(mcmd, 0, sizeof(*mcmd));
3457
3458 mcmd->sess = sess;
3459 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
3460 sizeof(mcmd->orig_iocb.imm_ntfy));
3461
3462 lun = a->u.isp24.fcp_cmnd.lun;
3463 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
3464
3465 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
3466 le16_to_cpu(iocb->u.isp2x.seq_id));
3467 if (rc != 0) {
3468 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
3469 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
3470 vha->vp_idx, rc);
3471 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
3472 return -EFAULT;
3473 }
3474
3475 return 0;
3476}
3477
3478/* ha->hardware_lock supposed to be held on entry */
3479static int qlt_abort_task(struct scsi_qla_host *vha,
3480 struct imm_ntfy_from_isp *iocb)
3481{
3482 struct qla_hw_data *ha = vha->hw;
3483 struct qla_tgt_sess *sess;
3484 int loop_id;
3485
3486 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
3487
3488 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
3489 if (sess == NULL) {
3490 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
3491 "qla_target(%d): task abort for unexisting "
3492 "session\n", vha->vp_idx);
0e8cd71c 3493 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 3494 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
3495 }
3496
3497 return __qlt_abort_task(vha, iocb, sess);
3498}
3499
3500/*
3501 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3502 */
3503static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
3504 struct imm_ntfy_from_isp *iocb)
3505{
2d70c103
NB		 3506 int res = 0;
3507
3508 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
7b833558
OK		 3509 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
3510 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2d70c103
NB		 3511
3512 switch (iocb->u.isp24.status_subcode) {
3513 case ELS_PLOGI:
3514 case ELS_FLOGI:
3515 case ELS_PRLI:
3516 case ELS_LOGO:
3517 case ELS_PRLO:
3518 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3519 break;
3520 case ELS_PDISC:
3521 case ELS_ADISC:
3522 {
0e8cd71c 3523 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3524 if (tgt->link_reinit_iocb_pending) {
3525 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
3526 0, 0, 0, 0, 0, 0);
3527 tgt->link_reinit_iocb_pending = 0;
3528 }
3529 res = 1; /* send notify ack */
3530 break;
3531 }
3532
3533 default:
3534 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
3535 "qla_target(%d): Unsupported ELS command %x "
3536 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
3537 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
3538 break;
3539 }
3540
3541 return res;
3542}
3543
3544static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
3545{
3546 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
3547 size_t first_offset = 0, rem_offset = offset, tmp = 0;
3548 int i, sg_srr_cnt, bufflen = 0;
3549
3550 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
3551 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
3552 "cmd->sg_cnt: %u, direction: %d\n",
3553 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
3554
3555 /*
3556 * FIXME: Reject non zero SRR relative offset until we can test
3557 * this code properly.
3558 */
3559 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
3560 return -1;
3561
3562 if (!cmd->sg || !cmd->sg_cnt) {
3563 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
3564 "Missing cmd->sg or zero cmd->sg_cnt in"
3565 " qla_tgt_set_data_offset\n");
3566 return -EINVAL;
3567 }
3568 /*
3569 * Walk the current cmd->sg list until we locate the new sg_srr_start
3570 */
3571 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
3572 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
3573 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
3574 i, sg, sg_page(sg), sg->length, sg->offset);
3575
3576 if ((sg->length + tmp) > offset) {
3577 first_offset = rem_offset;
3578 sg_srr_start = sg;
3579 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
3580 "Found matching sg[%d], using %p as sg_srr_start, "
3581 "and using first_offset: %zu\n", i, sg,
3582 first_offset);
3583 break;
3584 }
3585 tmp += sg->length;
3586 rem_offset -= sg->length;
3587 }
3588
3589 if (!sg_srr_start) {
3590 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
3591 "Unable to locate sg_srr_start for offset: %u\n", offset);
3592 return -EINVAL;
3593 }
3594 sg_srr_cnt = (cmd->sg_cnt - i);
3595
3596 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
3597 if (!sg_srr) {
3598 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
3599 "Unable to allocate sgp\n");
3600 return -ENOMEM;
3601 }
3602 sg_init_table(sg_srr, sg_srr_cnt);
3603 sgp = &sg_srr[0];
3604 /*
3605 * Walk the remaining list for sg_srr_start, mapping to the newly
3606 * allocated sg_srr taking first_offset into account.
3607 */
3608 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
3609 if (first_offset) {
3610 sg_set_page(sgp, sg_page(sg),
3611 (sg->length - first_offset), first_offset);
3612 first_offset = 0;
3613 } else {
3614 sg_set_page(sgp, sg_page(sg), sg->length, 0);
3615 }
3616 bufflen += sgp->length;
3617
3618 sgp = sg_next(sgp);
3619 if (!sgp)
3620 break;
3621 }
3622
3623 cmd->sg = sg_srr;
3624 cmd->sg_cnt = sg_srr_cnt;
3625 cmd->bufflen = bufflen;
3626 cmd->offset += offset;
3627 cmd->free_sg = 1;
3628
3629 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
3630 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
3631 cmd->sg_cnt);
3632 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
3633 cmd->bufflen);
3634 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
3635 cmd->offset);
3636
3637 if (cmd->sg_cnt < 0)
3638 BUG();
3639
3640 if (cmd->bufflen < 0)
3641 BUG();
3642
3643 return 0;
3644}
3645
3646static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
3647 uint32_t srr_rel_offs, int *xmit_type)
3648{
3649 int res = 0, rel_offs;
3650
3651 rel_offs = srr_rel_offs - cmd->offset;
3652 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
3653 srr_rel_offs, rel_offs);
3654
3655 *xmit_type = QLA_TGT_XMIT_ALL;
3656
3657 if (rel_offs < 0) {
3658 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
3659 "qla_target(%d): SRR rel_offs (%d) < 0",
3660 cmd->vha->vp_idx, rel_offs);
3661 res = -1;
3662 } else if (rel_offs == cmd->bufflen)
3663 *xmit_type = QLA_TGT_XMIT_STATUS;
3664 else if (rel_offs > 0)
3665 res = qlt_set_data_offset(cmd, rel_offs);
3666
3667 return res;
3668}
3669
3670/* No locks, thread context */
3671static void qlt_handle_srr(struct scsi_qla_host *vha,
3672 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
3673{
3674 struct imm_ntfy_from_isp *ntfy =
3675 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
3676 struct qla_hw_data *ha = vha->hw;
3677 struct qla_tgt_cmd *cmd = sctio->cmd;
3678 struct se_cmd *se_cmd = &cmd->se_cmd;
3679 unsigned long flags;
3680 int xmit_type = 0, resp = 0;
3681 uint32_t offset;
3682 uint16_t srr_ui;
3683
3684 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
3685 srr_ui = ntfy->u.isp24.srr_ui;
3686
3687 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
3688 cmd, srr_ui);
3689
3690 switch (srr_ui) {
3691 case SRR_IU_STATUS:
3692 spin_lock_irqsave(&ha->hardware_lock, flags);
3693 qlt_send_notify_ack(vha, ntfy,
3694 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3695 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3696 xmit_type = QLA_TGT_XMIT_STATUS;
3697 resp = 1;
3698 break;
3699 case SRR_IU_DATA_IN:
3700 if (!cmd->sg || !cmd->sg_cnt) {
3701 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
3702 "Unable to process SRR_IU_DATA_IN due to"
3703 " missing cmd->sg, state: %d\n", cmd->state);
3704 dump_stack();
3705 goto out_reject;
3706 }
3707 if (se_cmd->scsi_status != 0) {
3708 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
3709 "Rejecting SRR_IU_DATA_IN with non GOOD "
3710 "scsi_status\n");
3711 goto out_reject;
3712 }
3713 cmd->bufflen = se_cmd->data_length;
3714
3715 if (qlt_has_data(cmd)) {
3716 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3717 goto out_reject;
3718 spin_lock_irqsave(&ha->hardware_lock, flags);
3719 qlt_send_notify_ack(vha, ntfy,
3720 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3721 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3722 resp = 1;
3723 } else {
3724 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
3725 "qla_target(%d): SRR for in data for cmd "
3726 "without them (tag %d, SCSI status %d), "
3727 "reject", vha->vp_idx, cmd->tag,
3728 cmd->se_cmd.scsi_status);
3729 goto out_reject;
3730 }
3731 break;
3732 case SRR_IU_DATA_OUT:
3733 if (!cmd->sg || !cmd->sg_cnt) {
3734 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
3735 "Unable to process SRR_IU_DATA_OUT due to"
3736 " missing cmd->sg\n");
3737 dump_stack();
3738 goto out_reject;
3739 }
3740 if (se_cmd->scsi_status != 0) {
3741 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
3742 "Rejecting SRR_IU_DATA_OUT"
3743 " with non GOOD scsi_status\n");
3744 goto out_reject;
3745 }
3746 cmd->bufflen = se_cmd->data_length;
3747
3748 if (qlt_has_data(cmd)) {
3749 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
3750 goto out_reject;
3751 spin_lock_irqsave(&ha->hardware_lock, flags);
3752 qlt_send_notify_ack(vha, ntfy,
3753 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
3754 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3755 if (xmit_type & QLA_TGT_XMIT_DATA)
3756 qlt_rdy_to_xfer(cmd);
3757 } else {
3758 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
3759 "qla_target(%d): SRR for out data for cmd "
3760 "without them (tag %d, SCSI status %d), "
3761 "reject", vha->vp_idx, cmd->tag,
3762 cmd->se_cmd.scsi_status);
3763 goto out_reject;
3764 }
3765 break;
3766 default:
3767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
3768 "qla_target(%d): Unknown srr_ui value %x",
3769 vha->vp_idx, srr_ui);
3770 goto out_reject;
3771 }
3772
3773 /* Transmit response in case of status and data-in cases */
3774 if (resp)
3775 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
3776
3777 return;
3778
3779out_reject:
3780 spin_lock_irqsave(&ha->hardware_lock, flags);
3781 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
3782 NOTIFY_ACK_SRR_FLAGS_REJECT,
3783 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3784 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3785 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3786 cmd->state = QLA_TGT_STATE_DATA_IN;
3787 dump_stack();
3788 } else
3789 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3790 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3791}
3792
3793static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
3794 struct qla_tgt_srr_imm *imm, int ha_locked)
3795{
3796 struct qla_hw_data *ha = vha->hw;
3797 unsigned long flags = 0;
3798
3799 if (!ha_locked)
3800 spin_lock_irqsave(&ha->hardware_lock, flags);
3801
3802 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
3803 NOTIFY_ACK_SRR_FLAGS_REJECT,
3804 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3805 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3806
3807 if (!ha_locked)
3808 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3809
3810 kfree(imm);
3811}
3812
3813static void qlt_handle_srr_work(struct work_struct *work)
3814{
3815 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
3816 struct scsi_qla_host *vha = tgt->vha;
3817 struct qla_tgt_srr_ctio *sctio;
3818 unsigned long flags;
3819
3820 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
3821 tgt);
3822
3823restart:
3824 spin_lock_irqsave(&tgt->srr_lock, flags);
3825 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
3826 struct qla_tgt_srr_imm *imm, *i, *ti;
3827 struct qla_tgt_cmd *cmd;
3828 struct se_cmd *se_cmd;
3829
3830 imm = NULL;
3831 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
3832 srr_list_entry) {
3833 if (i->srr_id == sctio->srr_id) {
3834 list_del(&i->srr_list_entry);
3835 if (imm) {
3836 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
3837 "qla_target(%d): There must be "
3838 "only one IMM SRR per CTIO SRR "
3839 "(IMM SRR %p, id %d, CTIO %p\n",
3840 vha->vp_idx, i, i->srr_id, sctio);
3841 qlt_reject_free_srr_imm(tgt->vha, i, 0);
3842 } else
3843 imm = i;
3844 }
3845 }
3846
3847 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
3848 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
3849 sctio->srr_id);
3850
3851 if (imm == NULL) {
3852 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
3853 "Not found matching IMM for SRR CTIO (id %d)\n",
3854 sctio->srr_id);
3855 continue;
3856 } else
3857 list_del(&sctio->srr_list_entry);
3858
3859 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3860
3861 cmd = sctio->cmd;
3862 /*
3863 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
3864 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
3865 * logic..
3866 */
3867 cmd->offset = 0;
3868 if (cmd->free_sg) {
3869 kfree(cmd->sg);
3870 cmd->sg = NULL;
3871 cmd->free_sg = 0;
3872 }
3873 se_cmd = &cmd->se_cmd;
3874
3875 cmd->sg_cnt = se_cmd->t_data_nents;
3876 cmd->sg = se_cmd->t_data_sg;
3877
3878 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
3879 "SRR cmd %p (se_cmd %p, tag %d, op %x), "
3880 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
6f58c780
DGW		 3881 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
3882 cmd->sg_cnt, cmd->offset);
2d70c103
NB		 3883
3884 qlt_handle_srr(vha, sctio, imm);
3885
3886 kfree(imm);
3887 kfree(sctio);
3888 goto restart;
3889 }
3890 spin_unlock_irqrestore(&tgt->srr_lock, flags);
3891}
3892
3893/* ha->hardware_lock supposed to be held on entry */
3894static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
3895 struct imm_ntfy_from_isp *iocb)
3896{
3897 struct qla_tgt_srr_imm *imm;
0e8cd71c 3898 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3899 struct qla_tgt_srr_ctio *sctio;
3900
3901 tgt->imm_srr_id++;
3902
3903 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
3904 vha->vp_idx);
3905
3906 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
3907 if (imm != NULL) {
3908 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
3909
3910 /* IRQ is already OFF */
3911 spin_lock(&tgt->srr_lock);
3912 imm->srr_id = tgt->imm_srr_id;
3913 list_add_tail(&imm->srr_list_entry,
3914 &tgt->srr_imm_list);
3915 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
3916 "IMM NTFY SRR %p added (id %d, ui %x)\n",
3917 imm, imm->srr_id, iocb->u.isp24.srr_ui);
3918 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3919 int found = 0;
3920 list_for_each_entry(sctio, &tgt->srr_ctio_list,
3921 srr_list_entry) {
3922 if (sctio->srr_id == imm->srr_id) {
3923 found = 1;
3924 break;
3925 }
3926 }
3927 if (found) {
3928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
3929 "Scheduling srr work\n");
3930 schedule_work(&tgt->srr_work);
3931 } else {
3932 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
3933 "qla_target(%d): imm_srr_id "
3934 "== ctio_srr_id (%d), but there is no "
3935 "corresponding SRR CTIO, deleting IMM "
3936 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
3937 imm);
3938 list_del(&imm->srr_list_entry);
3939
3940 kfree(imm);
3941
3942 spin_unlock(&tgt->srr_lock);
3943 goto out_reject;
3944 }
3945 }
3946 spin_unlock(&tgt->srr_lock);
3947 } else {
3948 struct qla_tgt_srr_ctio *ts;
3949
3950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
3951 "qla_target(%d): Unable to allocate SRR IMM "
3952 "entry, SRR request will be rejected\n", vha->vp_idx);
3953
3954 /* IRQ is already OFF */
3955 spin_lock(&tgt->srr_lock);
3956 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
3957 srr_list_entry) {
3958 if (sctio->srr_id == tgt->imm_srr_id) {
3959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
3960 "CTIO SRR %p deleted (id %d)\n",
3961 sctio, sctio->srr_id);
3962 list_del(&sctio->srr_list_entry);
3963 qlt_send_term_exchange(vha, sctio->cmd,
3964 &sctio->cmd->atio, 1);
3965 kfree(sctio);
3966 }
3967 }
3968 spin_unlock(&tgt->srr_lock);
3969 goto out_reject;
3970 }
3971
3972 return;
3973
3974out_reject:
3975 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
3976 NOTIFY_ACK_SRR_FLAGS_REJECT,
3977 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
3978 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
3979}
3980
3981/*
3982 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3983 */
3984static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
3985 struct imm_ntfy_from_isp *iocb)
3986{
3987 struct qla_hw_data *ha = vha->hw;
3988 uint32_t add_flags = 0;
3989 int send_notify_ack = 1;
3990 uint16_t status;
3991
3992 status = le16_to_cpu(iocb->u.isp2x.status);
3993 switch (status) {
3994 case IMM_NTFY_LIP_RESET:
3995 {
3996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
3997 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
3998 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
3999 iocb->u.isp24.status_subcode);
4000
4001 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4002 send_notify_ack = 0;
4003 break;
4004 }
4005
4006 case IMM_NTFY_LIP_LINK_REINIT:
4007 {
0e8cd71c 4008 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4010 "qla_target(%d): LINK REINIT (loop %#x, "
4011 "subcode %x)\n", vha->vp_idx,
4012 le16_to_cpu(iocb->u.isp24.nport_handle),
4013 iocb->u.isp24.status_subcode);
4014 if (tgt->link_reinit_iocb_pending) {
4015 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4016 0, 0, 0, 0, 0, 0);
4017 }
4018 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4019 tgt->link_reinit_iocb_pending = 1;
4020 /*
4021 * QLogic requires to wait after LINK REINIT for possible
4022 * PDISC or ADISC ELS commands
4023 */
4024 send_notify_ack = 0;
4025 break;
4026 }
4027
4028 case IMM_NTFY_PORT_LOGOUT:
4029 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4030 "qla_target(%d): Port logout (loop "
4031 "%#x, subcode %x)\n", vha->vp_idx,
4032 le16_to_cpu(iocb->u.isp24.nport_handle),
4033 iocb->u.isp24.status_subcode);
4034
4035 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4036 send_notify_ack = 0;
4037 /* The sessions will be cleared in the callback, if needed */
4038 break;
4039
4040 case IMM_NTFY_GLBL_TPRLO:
4041 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4042 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4043 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4044 send_notify_ack = 0;
4045 /* The sessions will be cleared in the callback, if needed */
4046 break;
4047
4048 case IMM_NTFY_PORT_CONFIG:
4049 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4050 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4051 status);
4052 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4053 send_notify_ack = 0;
4054 /* The sessions will be cleared in the callback, if needed */
4055 break;
4056
4057 case IMM_NTFY_GLBL_LOGO:
4058 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4059 "qla_target(%d): Link failure detected\n",
4060 vha->vp_idx);
4061 /* I_T nexus loss */
4062 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4063 send_notify_ack = 0;
4064 break;
4065
4066 case IMM_NTFY_IOCB_OVERFLOW:
4067 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4068 "qla_target(%d): Cannot provide requested "
4069 "capability (IOCB overflowed the immediate notify "
4070 "resource count)\n", vha->vp_idx);
4071 break;
4072
4073 case IMM_NTFY_ABORT_TASK:
4074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4075 "qla_target(%d): Abort Task (S %08x I %#x -> "
4076 "L %#x)\n", vha->vp_idx,
4077 le16_to_cpu(iocb->u.isp2x.seq_id),
4078 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4079 le16_to_cpu(iocb->u.isp2x.lun));
4080 if (qlt_abort_task(vha, iocb) == 0)
4081 send_notify_ack = 0;
4082 break;
4083
4084 case IMM_NTFY_RESOURCE:
4085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4086 "qla_target(%d): Out of resources, host %ld\n",
4087 vha->vp_idx, vha->host_no);
4088 break;
4089
4090 case IMM_NTFY_MSG_RX:
4091 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4092 "qla_target(%d): Immediate notify task %x\n",
4093 vha->vp_idx, iocb->u.isp2x.task_flags);
4094 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4095 send_notify_ack = 0;
4096 break;
4097
4098 case IMM_NTFY_ELS:
4099 if (qlt_24xx_handle_els(vha, iocb) == 0)
4100 send_notify_ack = 0;
4101 break;
4102
4103 case IMM_NTFY_SRR:
4104 qlt_prepare_srr_imm(vha, iocb);
4105 send_notify_ack = 0;
4106 break;
4107
4108 default:
4109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4110 "qla_target(%d): Received unknown immediate "
4111 "notify status %x\n", vha->vp_idx, status);
4112 break;
4113 }
4114
4115 if (send_notify_ack)
4116 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4117}
4118
4119/*
4120 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4121 * This function sends busy to ISP 2xxx or 24xx.
4122 */
4123static void qlt_send_busy(struct scsi_qla_host *vha,
4124 struct atio_from_isp *atio, uint16_t status)
4125{
4126 struct ctio7_to_24xx *ctio24;
4127 struct qla_hw_data *ha = vha->hw;
4128 request_t *pkt;
4129 struct qla_tgt_sess *sess = NULL;
4130
4131 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4132 atio->u.isp24.fcp_hdr.s_id);
4133 if (!sess) {
4134 qlt_send_term_exchange(vha, NULL, atio, 1);
4135 return;
4136 }
4137 /* Sending marker isn't necessary, since we called from ISR */
4138
4139 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4140 if (!pkt) {
4141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
4142 "qla_target(%d): %s failed: unable to allocate "
4143 "request packet", vha->vp_idx, __func__);
4144 return;
4145 }
4146
4147 pkt->entry_count = 1;
4148 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
4149
4150 ctio24 = (struct ctio7_to_24xx *)pkt;
4151 ctio24->entry_type = CTIO_TYPE7;
4152 ctio24->nport_handle = sess->loop_id;
4153 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
4154 ctio24->vp_index = vha->vp_idx;
4155 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
4156 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
4157 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
4158 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
4159 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
4160 __constant_cpu_to_le16(
4161 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
4162 CTIO7_FLAGS_DONT_RET_CTIO);
4163 /*
4164 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
4165 * if the explicit conformation is used.
4166 */
4167 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
4168 ctio24->u.status1.scsi_status = cpu_to_le16(status);
4169 ctio24->u.status1.residual = get_unaligned((uint32_t *)
4170 &atio->u.isp24.fcp_cmnd.add_cdb[
4171 atio->u.isp24.fcp_cmnd.add_cdb_len]);
4172 if (ctio24->u.status1.residual != 0)
4173 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
4174
4175 qla2x00_start_iocbs(vha, vha->req);
4176}
4177
4178/* ha->hardware_lock supposed to be held on entry */
4179/* called via callback from qla2xxx */
4180static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
4181 struct atio_from_isp *atio)
4182{
4183 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4184 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4185 int rc;
4186
4187 if (unlikely(tgt == NULL)) {
4188 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
4189 "ATIO pkt, but no tgt (ha %p)", ha);
4190 return;
4191 }
4192 ql_dbg(ql_dbg_tgt, vha, 0xe02c,
4193 "qla_target(%d): ATIO pkt %p: type %02x count %02x",
4194 vha->vp_idx, atio, atio->u.raw.entry_type,
4195 atio->u.raw.entry_count);
4196 /*
4197 * In tgt_stop mode we also should allow all requests to pass.
4198 * Otherwise, some commands can stuck.
4199 */
4200
4201 tgt->irq_cmd_count++;
4202
4203 switch (atio->u.raw.entry_type) {
4204 case ATIO_TYPE7:
4205 ql_dbg(ql_dbg_tgt, vha, 0xe02d,
f83adb61 4206 "ATIO_TYPE7 instance %d, lun %Lx, read/write %d/%d, cdb %x, add_cdb_len %x, data_length %04x, s_id %02x%02x%02x\n",
2d70c103
NB		 4207 vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
4208 atio->u.isp24.fcp_cmnd.rddata,
4209 atio->u.isp24.fcp_cmnd.wrdata,
f83adb61 4210 atio->u.isp24.fcp_cmnd.cdb[0],
2d70c103
NB		 4211 atio->u.isp24.fcp_cmnd.add_cdb_len,
4212 be32_to_cpu(get_unaligned((uint32_t *)
4213 &atio->u.isp24.fcp_cmnd.add_cdb[
4214 atio->u.isp24.fcp_cmnd.add_cdb_len])),
4215 atio->u.isp24.fcp_hdr.s_id[0],
4216 atio->u.isp24.fcp_hdr.s_id[1],
4217 atio->u.isp24.fcp_hdr.s_id[2]);
4218
4219 if (unlikely(atio->u.isp24.exchange_addr ==
4220 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
4221 ql_dbg(ql_dbg_tgt, vha, 0xe058,
4222 "qla_target(%d): ATIO_TYPE7 "
4223 "received with UNKNOWN exchange address, "
4224 "sending QUEUE_FULL\n", vha->vp_idx);
4225 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
4226 break;
4227 }
4228 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
4229 rc = qlt_handle_cmd_for_atio(vha, atio);
4230 else
4231 rc = qlt_handle_task_mgmt(vha, atio);
4232 if (unlikely(rc != 0)) {
4233 if (rc == -ESRCH) {
4234#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4235 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4236#else
4237 qlt_send_term_exchange(vha, NULL, atio, 1);
4238#endif
4239 } else {
4240 if (tgt->tgt_stop) {
4241 ql_dbg(ql_dbg_tgt, vha, 0xe059,
4242 "qla_target: Unable to send "
4243 "command to target for req, "
4244 "ignoring.\n");
4245 } else {
4246 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
4247 "qla_target(%d): Unable to send "
4248 "command to target, sending BUSY "
4249 "status.\n", vha->vp_idx);
4250 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
4251 }
4252 }
4253 }
4254 break;
4255
4256 case IMMED_NOTIFY_TYPE:
4257 {
4258 if (unlikely(atio->u.isp2x.entry_status != 0)) {
4259 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
4260 "qla_target(%d): Received ATIO packet %x "
4261 "with error status %x\n", vha->vp_idx,
4262 atio->u.raw.entry_type,
4263 atio->u.isp2x.entry_status);
4264 break;
4265 }
4266 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
4267 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
4268 break;
4269 }
4270
4271 default:
4272 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
4273 "qla_target(%d): Received unknown ATIO atio "
4274 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
4275 break;
4276 }
4277
4278 tgt->irq_cmd_count--;
4279}
4280
4281/* ha->hardware_lock supposed to be held on entry */
4282/* called via callback from qla2xxx */
4283static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
4284{
4285 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4286 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4287
4288 if (unlikely(tgt == NULL)) {
4289 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
4290 "qla_target(%d): Response pkt %x received, but no "
4291 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
4292 return;
4293 }
4294
4295 ql_dbg(ql_dbg_tgt, vha, 0xe02f,
4296 "qla_target(%d): response pkt %p: T %02x C %02x S %02x "
4297 "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
4298 pkt->entry_count, pkt->entry_status, pkt->handle);
4299
4300 /*
4301 * In tgt_stop mode we also should allow all requests to pass.
4302 * Otherwise, some commands can stuck.
4303 */
4304
4305 tgt->irq_cmd_count++;
4306
4307 switch (pkt->entry_type) {
f83adb61 4308 case CTIO_CRC2:
2d70c103
NB		 4309 case CTIO_TYPE7:
4310 {
4311 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
f83adb61
QT		 4312 ql_dbg(ql_dbg_tgt, vha, 0xe030,
4313 "CTIO[0x%x] 12/CTIO7 7A/CRC2: instance %d\n",
4314 entry->entry_type, vha->vp_idx);
2d70c103
NB		 4315 qlt_do_ctio_completion(vha, entry->handle,
4316 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4317 entry);
4318 break;
4319 }
4320
4321 case ACCEPT_TGT_IO_TYPE:
4322 {
4323 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
4324 int rc;
4325 ql_dbg(ql_dbg_tgt, vha, 0xe031,
4326 "ACCEPT_TGT_IO instance %d status %04x "
4327 "lun %04x read/write %d data_length %04x "
4328 "target_id %02x rx_id %04x\n ", vha->vp_idx,
4329 le16_to_cpu(atio->u.isp2x.status),
4330 le16_to_cpu(atio->u.isp2x.lun),
4331 atio->u.isp2x.execution_codes,
4332 le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
4333 atio), atio->u.isp2x.rx_id);
4334 if (atio->u.isp2x.status !=
4335 __constant_cpu_to_le16(ATIO_CDB_VALID)) {
4336 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
4337 "qla_target(%d): ATIO with error "
4338 "status %x received\n", vha->vp_idx,
4339 le16_to_cpu(atio->u.isp2x.status));
4340 break;
4341 }
4342 ql_dbg(ql_dbg_tgt, vha, 0xe032,
4343 "FCP CDB: 0x%02x, sizeof(cdb): %lu",
4344 atio->u.isp2x.cdb[0], (unsigned long
4345 int)sizeof(atio->u.isp2x.cdb));
4346
4347 rc = qlt_handle_cmd_for_atio(vha, atio);
4348 if (unlikely(rc != 0)) {
4349 if (rc == -ESRCH) {
4350#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
4351 qlt_send_busy(vha, atio, 0);
4352#else
4353 qlt_send_term_exchange(vha, NULL, atio, 1);
4354#endif
4355 } else {
4356 if (tgt->tgt_stop) {
4357 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
4358 "qla_target: Unable to send "
4359 "command to target, sending TERM "
4360 "EXCHANGE for rsp\n");
4361 qlt_send_term_exchange(vha, NULL,
4362 atio, 1);
4363 } else {
4364 ql_dbg(ql_dbg_tgt, vha, 0xe060,
4365 "qla_target(%d): Unable to send "
4366 "command to target, sending BUSY "
4367 "status\n", vha->vp_idx);
4368 qlt_send_busy(vha, atio, 0);
4369 }
4370 }
4371 }
4372 }
4373 break;
4374
4375 case CONTINUE_TGT_IO_TYPE:
4376 {
4377 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4378 ql_dbg(ql_dbg_tgt, vha, 0xe033,
4379 "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
4380 qlt_do_ctio_completion(vha, entry->handle,
4381 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4382 entry);
4383 break;
4384 }
4385
4386 case CTIO_A64_TYPE:
4387 {
4388 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
4389 ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
4390 vha->vp_idx);
4391 qlt_do_ctio_completion(vha, entry->handle,
4392 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
4393 entry);
4394 break;
4395 }
4396
4397 case IMMED_NOTIFY_TYPE:
4398 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
4399 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
4400 break;
4401
4402 case NOTIFY_ACK_TYPE:
4403 if (tgt->notify_ack_expected > 0) {
4404 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
4405 ql_dbg(ql_dbg_tgt, vha, 0xe036,
4406 "NOTIFY_ACK seq %08x status %x\n",
4407 le16_to_cpu(entry->u.isp2x.seq_id),
4408 le16_to_cpu(entry->u.isp2x.status));
4409 tgt->notify_ack_expected--;
4410 if (entry->u.isp2x.status !=
4411 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
4412 ql_dbg(ql_dbg_tgt, vha, 0xe061,
4413 "qla_target(%d): NOTIFY_ACK "
4414 "failed %x\n", vha->vp_idx,
4415 le16_to_cpu(entry->u.isp2x.status));
4416 }
4417 } else {
4418 ql_dbg(ql_dbg_tgt, vha, 0xe062,
4419 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
4420 vha->vp_idx);
4421 }
4422 break;
4423
4424 case ABTS_RECV_24XX:
4425 ql_dbg(ql_dbg_tgt, vha, 0xe037,
4426 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
4427 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
4428 break;
4429
4430 case ABTS_RESP_24XX:
4431 if (tgt->abts_resp_expected > 0) {
4432 struct abts_resp_from_24xx_fw *entry =
4433 (struct abts_resp_from_24xx_fw *)pkt;
4434 ql_dbg(ql_dbg_tgt, vha, 0xe038,
4435 "ABTS_RESP_24XX: compl_status %x\n",
4436 entry->compl_status);
4437 tgt->abts_resp_expected--;
4438 if (le16_to_cpu(entry->compl_status) !=
4439 ABTS_RESP_COMPL_SUCCESS) {
4440 if ((entry->error_subcode1 == 0x1E) &&
4441 (entry->error_subcode2 == 0)) {
4442 /*
4443 * We've got a race here: aborted
4444 * exchange not terminated, i.e.
4445 * response for the aborted command was
4446 * sent between the abort request was
4447 * received and processed.
4448 * Unfortunately, the firmware has a
4449 * silly requirement that all aborted
4450 * exchanges must be explicitely
4451 * terminated, otherwise it refuses to
4452 * send responses for the abort
4453 * requests. So, we have to
4454 * (re)terminate the exchange and retry
4455 * the abort response.
4456 */
4457 qlt_24xx_retry_term_exchange(vha,
4458 entry);
4459 } else
4460 ql_dbg(ql_dbg_tgt, vha, 0xe063,
4461 "qla_target(%d): ABTS_RESP_24XX "
4462 "failed %x (subcode %x:%x)",
4463 vha->vp_idx, entry->compl_status,
4464 entry->error_subcode1,
4465 entry->error_subcode2);
4466 }
4467 } else {
4468 ql_dbg(ql_dbg_tgt, vha, 0xe064,
4469 "qla_target(%d): Unexpected ABTS_RESP_24XX "
4470 "received\n", vha->vp_idx);
4471 }
4472 break;
4473
4474 default:
4475 ql_dbg(ql_dbg_tgt, vha, 0xe065,
4476 "qla_target(%d): Received unknown response pkt "
4477 "type %x\n", vha->vp_idx, pkt->entry_type);
4478 break;
4479 }
4480
4481 tgt->irq_cmd_count--;
4482}
4483
4484/*
4485 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4486 */
4487void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
4488 uint16_t *mailbox)
4489{
4490 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4491 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 4492 int login_code;
2d70c103
NB		 4493
4494 ql_dbg(ql_dbg_tgt, vha, 0xe039,
4495 "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
4496 vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
4497 ha->operating_mode, ha->current_topology);
4498
4499 if (!ha->tgt.tgt_ops)
4500 return;
4501
4502 if (unlikely(tgt == NULL)) {
4503 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
4504 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
4505 return;
4506 }
4507
4508 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
4509 IS_QLA2100(ha))
4510 return;
4511 /*
4512 * In tgt_stop mode we also should allow all requests to pass.
4513 * Otherwise, some commands can stuck.
4514 */
4515
4516 tgt->irq_cmd_count++;
4517
4518 switch (code) {
4519 case MBA_RESET: /* Reset */
4520 case MBA_SYSTEM_ERR: /* System Error */
4521 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
4522 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
4523 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
4524 "qla_target(%d): System error async event %#x "
6efb3c0a 4525 "occurred", vha->vp_idx, code);
2d70c103
NB		 4526 break;
4527 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
4528 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
4529 break;
4530
4531 case MBA_LOOP_UP:
4532 {
4533 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 4534 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 4535 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4536 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4537 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4538 if (tgt->link_reinit_iocb_pending) {
4539 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
4540 0, 0, 0, 0, 0, 0);
4541 tgt->link_reinit_iocb_pending = 0;
4542 }
4543 break;
4544 }
4545
4546 case MBA_LIP_OCCURRED:
4547 case MBA_LOOP_DOWN:
4548 case MBA_LIP_RESET:
4549 case MBA_RSCN_UPDATE:
4550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 4551 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 4552 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4553 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4554 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4555 break;
4556
4557 case MBA_PORT_UPDATE:
4558 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
4559 "qla_target(%d): Port update async event %#x "
6efb3c0a 4560 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 4561 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
4562 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4563 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
4564
4565 login_code = le16_to_cpu(mailbox[2]);
4566 if (login_code == 0x4)
2d70c103
NB		 4567 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
4568 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 4569 else if (login_code == 0x7)
2d70c103
NB		 4570 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
4571 "Async MB 2: Port Logged Out\n");
4572 break;
4573
4574 default:
4575 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
6efb3c0a 4576 "qla_target(%d): Async event %#x occurred: "
4f1d0f19
AC		 4577 "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
4578 code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
4579 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 4580 break;
4581 }
4582
4583 tgt->irq_cmd_count--;
4584}
4585
4586static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
4587 uint16_t loop_id)
4588{
4589 fc_port_t *fcport;
4590 int rc;
4591
4592 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
4593 if (!fcport) {
4594 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
4595 "qla_target(%d): Allocation of tmp FC port failed",
4596 vha->vp_idx);
4597 return NULL;
4598 }
4599
4600 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
4601
4602 fcport->loop_id = loop_id;
4603
4604 rc = qla2x00_get_port_database(vha, fcport, 0);
4605 if (rc != QLA_SUCCESS) {
4606 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
4607 "qla_target(%d): Failed to retrieve fcport "
4608 "information -- get_port_database() returned %x "
4609 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
4610 kfree(fcport);
4611 return NULL;
4612 }
4613
4614 return fcport;
4615}
4616
4617/* Must be called under tgt_mutex */
4618static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
4619 uint8_t *s_id)
4620{
2d70c103
NB		 4621 struct qla_tgt_sess *sess = NULL;
4622 fc_port_t *fcport = NULL;
4623 int rc, global_resets;
4624 uint16_t loop_id = 0;
4625
4626retry:
0e8cd71c
SK		 4627 global_resets =
4628 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 4629
4630 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
4631 if (rc != 0) {
4632 if ((s_id[0] == 0xFF) &&
4633 (s_id[1] == 0xFC)) {
4634 /*
4635 * This is Domain Controller, so it should be
4636 * OK to drop SCSI commands from it.
4637 */
4638 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
4639 "Unable to find initiator with S_ID %x:%x:%x",
4640 s_id[0], s_id[1], s_id[2]);
4641 } else
4642 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
4643 "qla_target(%d): Unable to find "
4644 "initiator with S_ID %x:%x:%x",
4645 vha->vp_idx, s_id[0], s_id[1],
4646 s_id[2]);
4647 return NULL;
4648 }
4649
4650 fcport = qlt_get_port_database(vha, loop_id);
4651 if (!fcport)
4652 return NULL;
4653
4654 if (global_resets !=
0e8cd71c 4655 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 4656 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
4657 "qla_target(%d): global reset during session discovery "
4658 "(counter was %d, new %d), retrying", vha->vp_idx,
4659 global_resets,
0e8cd71c
SK		 4660 atomic_read(&vha->vha_tgt.
4661 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 4662 goto retry;
4663 }
4664
4665 sess = qlt_create_sess(vha, fcport, true);
4666
4667 kfree(fcport);
4668 return sess;
4669}
4670
4671static void qlt_abort_work(struct qla_tgt *tgt,
4672 struct qla_tgt_sess_work_param *prm)
4673{
4674 struct scsi_qla_host *vha = tgt->vha;
4675 struct qla_hw_data *ha = vha->hw;
4676 struct qla_tgt_sess *sess = NULL;
4677 unsigned long flags;
4678 uint32_t be_s_id;
4679 uint8_t s_id[3];
4680 int rc;
4681
4682 spin_lock_irqsave(&ha->hardware_lock, flags);
4683
4684 if (tgt->tgt_stop)
4685 goto out_term;
4686
4687 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
4688 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
4689 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
4690
4691 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4692 (unsigned char *)&be_s_id);
4693 if (!sess) {
4694 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4695
0e8cd71c 4696 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4697 sess = qlt_make_local_sess(vha, s_id);
4698 /* sess has got an extra creation ref */
0e8cd71c 4699 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4700
4701 spin_lock_irqsave(&ha->hardware_lock, flags);
4702 if (!sess)
4703 goto out_term;
4704 } else {
4705 kref_get(&sess->se_sess->sess_kref);
4706 }
4707
4708 if (tgt->tgt_stop)
4709 goto out_term;
4710
4711 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
4712 if (rc != 0)
4713 goto out_term;
2d70c103
NB		 4714
4715 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4716 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4717 return;
4718
4719out_term:
4720 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
2d70c103
NB		 4721 if (sess)
4722 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4723 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4724}
4725
4726static void qlt_tmr_work(struct qla_tgt *tgt,
4727 struct qla_tgt_sess_work_param *prm)
4728{
4729 struct atio_from_isp *a = &prm->tm_iocb2;
4730 struct scsi_qla_host *vha = tgt->vha;
4731 struct qla_hw_data *ha = vha->hw;
4732 struct qla_tgt_sess *sess = NULL;
4733 unsigned long flags;
4734 uint8_t *s_id = NULL; /* to hide compiler warnings */
4735 int rc;
4736 uint32_t lun, unpacked_lun;
4737 int lun_size, fn;
4738 void *iocb;
4739
4740 spin_lock_irqsave(&ha->hardware_lock, flags);
4741
4742 if (tgt->tgt_stop)
4743 goto out_term;
4744
4745 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
4746 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
4747 if (!sess) {
4748 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4749
0e8cd71c 4750 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4751 sess = qlt_make_local_sess(vha, s_id);
4752 /* sess has got an extra creation ref */
0e8cd71c 4753 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 4754
4755 spin_lock_irqsave(&ha->hardware_lock, flags);
4756 if (!sess)
4757 goto out_term;
4758 } else {
4759 kref_get(&sess->se_sess->sess_kref);
4760 }
4761
4762 iocb = a;
4763 lun = a->u.isp24.fcp_cmnd.lun;
4764 lun_size = sizeof(lun);
4765 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
4766 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4767
4768 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4769 if (rc != 0)
4770 goto out_term;
2d70c103
NB		 4771
4772 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4773 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4774 return;
4775
4776out_term:
4777 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
2d70c103
NB		 4778 if (sess)
4779 ha->tgt.tgt_ops->put_sess(sess);
08234e3a 4780 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 4781}
4782
4783static void qlt_sess_work_fn(struct work_struct *work)
4784{
4785 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
4786 struct scsi_qla_host *vha = tgt->vha;
4787 unsigned long flags;
4788
4789 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
4790
4791 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4792 while (!list_empty(&tgt->sess_works_list)) {
4793 struct qla_tgt_sess_work_param *prm = list_entry(
4794 tgt->sess_works_list.next, typeof(*prm),
4795 sess_works_list_entry);
4796
4797 /*
4798 * This work can be scheduled on several CPUs at time, so we
4799 * must delete the entry to eliminate double processing
4800 */
4801 list_del(&prm->sess_works_list_entry);
4802
4803 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4804
4805 switch (prm->type) {
4806 case QLA_TGT_SESS_WORK_ABORT:
4807 qlt_abort_work(tgt, prm);
4808 break;
4809 case QLA_TGT_SESS_WORK_TM:
4810 qlt_tmr_work(tgt, prm);
4811 break;
4812 default:
4813 BUG_ON(1);
4814 break;
4815 }
4816
4817 spin_lock_irqsave(&tgt->sess_work_lock, flags);
4818
4819 kfree(prm);
4820 }
4821 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
4822}
4823
4824/* Must be called under tgt_host_action_mutex */
4825int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
4826{
4827 struct qla_tgt *tgt;
4828
4829 if (!QLA_TGT_MODE_ENABLED())
4830 return 0;
4831
33c36c0a
AE		 4832 if (!IS_TGT_MODE_CAPABLE(ha)) {
4833 ql_log(ql_log_warn, base_vha, 0xe070,
4834 "This adapter does not support target mode.\n");
4835 return 0;
4836 }
4837
2d70c103 4838 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 4839 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 4840
0e8cd71c 4841 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 4842
4843 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
4844 if (!tgt) {
4845 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
4846 "Unable to allocate struct qla_tgt\n");
4847 return -ENOMEM;
4848 }
4849
4850 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
4851 base_vha->host->hostt->supported_mode |= MODE_TARGET;
4852
4853 tgt->ha = ha;
4854 tgt->vha = base_vha;
4855 init_waitqueue_head(&tgt->waitQ);
4856 INIT_LIST_HEAD(&tgt->sess_list);
4857 INIT_LIST_HEAD(&tgt->del_sess_list);
4858 INIT_DELAYED_WORK(&tgt->sess_del_work,
4859 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
4860 spin_lock_init(&tgt->sess_work_lock);
4861 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
4862 INIT_LIST_HEAD(&tgt->sess_works_list);
4863 spin_lock_init(&tgt->srr_lock);
4864 INIT_LIST_HEAD(&tgt->srr_ctio_list);
4865 INIT_LIST_HEAD(&tgt->srr_imm_list);
4866 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
4867 atomic_set(&tgt->tgt_global_resets_count, 0);
4868
0e8cd71c 4869 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 4870
4871 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
4872 "qla_target(%d): using 64 Bit PCI addressing",
4873 base_vha->vp_idx);
4874 tgt->tgt_enable_64bit_addr = 1;
4875 /* 3 is reserved */
4876 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
4877 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
4878 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
4879
ddb95145
NB		 4880 if (base_vha->fc_vport)
4881 return 0;
4882
2d70c103
NB		 4883 mutex_lock(&qla_tgt_mutex);
4884 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
4885 mutex_unlock(&qla_tgt_mutex);
4886
4887 return 0;
4888}
4889
4890/* Must be called under tgt_host_action_mutex */
4891int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
4892{
0e8cd71c 4893 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 4894 return 0;
4895
ddb95145
NB		 4896 if (vha->fc_vport) {
4897 qlt_release(vha->vha_tgt.qla_tgt);
4898 return 0;
4899 }
2d70c103 4900 mutex_lock(&qla_tgt_mutex);
0e8cd71c 4901 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 4902 mutex_unlock(&qla_tgt_mutex);
4903
4904 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
4905 vha->host_no, ha);
0e8cd71c 4906 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 4907
4908 return 0;
4909}
4910
4911static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
4912 unsigned char *b)
4913{
4914 int i;
4915
4916 pr_debug("qla2xxx HW vha->node_name: ");
4917 for (i = 0; i < WWN_SIZE; i++)
4918 pr_debug("%02x ", vha->node_name[i]);
4919 pr_debug("\n");
4920 pr_debug("qla2xxx HW vha->port_name: ");
4921 for (i = 0; i < WWN_SIZE; i++)
4922 pr_debug("%02x ", vha->port_name[i]);
4923 pr_debug("\n");
4924
4925 pr_debug("qla2xxx passed configfs WWPN: ");
4926 put_unaligned_be64(wwpn, b);
4927 for (i = 0; i < WWN_SIZE; i++)
4928 pr_debug("%02x ", b[i]);
4929 pr_debug("\n");
4930}
4931
4932/**
4933 * qla_tgt_lport_register - register lport with external module
4934 *
4935 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
4936 * @wwpn: Passwd FC target WWPN
4937 * @callback: lport initialization callback for tcm_qla2xxx code
4938 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
4939 */
49a47f2c
NB		 4940int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
4941 u64 npiv_wwpn, u64 npiv_wwnn,
4942 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 4943{
4944 struct qla_tgt *tgt;
4945 struct scsi_qla_host *vha;
4946 struct qla_hw_data *ha;
4947 struct Scsi_Host *host;
4948 unsigned long flags;
4949 int rc;
4950 u8 b[WWN_SIZE];
4951
4952 mutex_lock(&qla_tgt_mutex);
4953 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
4954 vha = tgt->vha;
4955 ha = vha->hw;
4956
4957 host = vha->host;
4958 if (!host)
4959 continue;
4960
2d70c103
NB		 4961 if (!(host->hostt->supported_mode & MODE_TARGET))
4962 continue;
4963
4964 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 4965 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 4966 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
4967 host->host_no);
4968 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4969 continue;
4970 }
ddb95145
NB		 4971 if (tgt->tgt_stop) {
4972 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
4973 host->host_no);
4974 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4975 continue;
4976 }
2d70c103
NB		 4977 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4978
4979 if (!scsi_host_get(host)) {
4980 ql_dbg(ql_dbg_tgt, vha, 0xe068,
4981 "Unable to scsi_host_get() for"
4982 " qla2xxx scsi_host\n");
4983 continue;
4984 }
49a47f2c 4985 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 4986
4987 if (memcmp(vha->port_name, b, WWN_SIZE)) {
4988 scsi_host_put(host);
4989 continue;
4990 }
49a47f2c
NB		 4991 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
4992 if (rc != 0)
4993 scsi_host_put(host);
4994
ddb95145 4995 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 4996 return rc;
4997 }
4998 mutex_unlock(&qla_tgt_mutex);
4999
5000 return -ENODEV;
5001}
5002EXPORT_SYMBOL(qlt_lport_register);
5003
5004/**
5005 * qla_tgt_lport_deregister - Degister lport
5006 *
5007 * @vha: Registered scsi_qla_host pointer
5008 */
5009void qlt_lport_deregister(struct scsi_qla_host *vha)
5010{
5011 struct qla_hw_data *ha = vha->hw;
5012 struct Scsi_Host *sh = vha->host;
5013 /*
5014 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
5015 */
0e8cd71c 5016 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 5017 ha->tgt.tgt_ops = NULL;
5018 /*
5019 * Release the Scsi_Host reference for the underlying qla2xxx host
5020 */
5021 scsi_host_put(sh);
5022}
5023EXPORT_SYMBOL(qlt_lport_deregister);
5024
5025/* Must be called under HW lock */
5026void qlt_set_mode(struct scsi_qla_host *vha)
5027{
5028 struct qla_hw_data *ha = vha->hw;
5029
5030 switch (ql2x_ini_mode) {
5031 case QLA2XXX_INI_MODE_DISABLED:
5032 case QLA2XXX_INI_MODE_EXCLUSIVE:
5033 vha->host->active_mode = MODE_TARGET;
5034 break;
5035 case QLA2XXX_INI_MODE_ENABLED:
5036 vha->host->active_mode |= MODE_TARGET;
5037 break;
5038 default:
5039 break;
5040 }
5041
5042 if (ha->tgt.ini_mode_force_reverse)
5043 qla_reverse_ini_mode(vha);
5044}
5045
5046/* Must be called under HW lock */
5047void qlt_clear_mode(struct scsi_qla_host *vha)
5048{
5049 struct qla_hw_data *ha = vha->hw;
5050
5051 switch (ql2x_ini_mode) {
5052 case QLA2XXX_INI_MODE_DISABLED:
5053 vha->host->active_mode = MODE_UNKNOWN;
5054 break;
5055 case QLA2XXX_INI_MODE_EXCLUSIVE:
5056 vha->host->active_mode = MODE_INITIATOR;
5057 break;
5058 case QLA2XXX_INI_MODE_ENABLED:
5059 vha->host->active_mode &= ~MODE_TARGET;
5060 break;
5061 default:
5062 break;
5063 }
5064
5065 if (ha->tgt.ini_mode_force_reverse)
5066 qla_reverse_ini_mode(vha);
5067}
5068
5069/*
5070 * qla_tgt_enable_vha - NO LOCK HELD
5071 *
5072 * host_reset, bring up w/ Target Mode Enabled
5073 */
5074void
5075qlt_enable_vha(struct scsi_qla_host *vha)
5076{
5077 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5078 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5079 unsigned long flags;
0e8cd71c 5080 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 5081
5082 if (!tgt) {
5083 ql_dbg(ql_dbg_tgt, vha, 0xe069,
5084 "Unable to locate qla_tgt pointer from"
5085 " struct qla_hw_data\n");
5086 dump_stack();
5087 return;
5088 }
5089
5090 spin_lock_irqsave(&ha->hardware_lock, flags);
5091 tgt->tgt_stopped = 0;
5092 qlt_set_mode(vha);
5093 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5094
0e8cd71c
SK		 5095 if (vha->vp_idx) {
5096 qla24xx_disable_vp(vha);
5097 qla24xx_enable_vp(vha);
5098 } else {
5099 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
5100 qla2xxx_wake_dpc(base_vha);
5101 qla2x00_wait_for_hba_online(base_vha);
5102 }
2d70c103
NB		 5103}
5104EXPORT_SYMBOL(qlt_enable_vha);
5105
5106/*
5107 * qla_tgt_disable_vha - NO LOCK HELD
5108 *
5109 * Disable Target Mode and reset the adapter
5110 */
5111void
5112qlt_disable_vha(struct scsi_qla_host *vha)
5113{
5114 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5115 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5116 unsigned long flags;
5117
5118 if (!tgt) {
5119 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
5120 "Unable to locate qla_tgt pointer from"
5121 " struct qla_hw_data\n");
5122 dump_stack();
5123 return;
5124 }
5125
5126 spin_lock_irqsave(&ha->hardware_lock, flags);
5127 qlt_clear_mode(vha);
5128 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5129
5130 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5131 qla2xxx_wake_dpc(vha);
5132 qla2x00_wait_for_hba_online(vha);
5133}
5134
5135/*
5136 * Called from qla_init.c:qla24xx_vport_create() contex to setup
5137 * the target mode specific struct scsi_qla_host and struct qla_hw_data
5138 * members.
5139 */
5140void
5141qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
5142{
5143 if (!qla_tgt_mode_enabled(vha))
5144 return;
5145
0e8cd71c
SK		 5146 vha->vha_tgt.qla_tgt = NULL;
5147
5148 mutex_init(&vha->vha_tgt.tgt_mutex);
5149 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5150
5151 qlt_clear_mode(vha);
5152
5153 /*
5154 * NOTE: Currently the value is kept the same for <24xx and
5155 * >=24xx ISPs. If it is necessary to change it,
5156 * the check should be added for specific ISPs,
5157 * assigning the value appropriately.
5158 */
5159 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 5160
5161 qlt_add_target(ha, vha);
2d70c103
NB		 5162}
5163
5164void
5165qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
5166{
5167 /*
5168 * FC-4 Feature bit 0 indicates target functionality to the name server.
5169 */
5170 if (qla_tgt_mode_enabled(vha)) {
5171 if (qla_ini_mode_enabled(vha))
5172 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
5173 else
5174 ct_req->req.rff_id.fc4_feature = BIT_0;
5175 } else if (qla_ini_mode_enabled(vha)) {
5176 ct_req->req.rff_id.fc4_feature = BIT_1;
5177 }
5178}
5179
5180/*
5181 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
5182 * @ha: HA context
5183 *
5184 * Beginning of ATIO ring has initialization control block already built
5185 * by nvram config routine.
5186 *
5187 * Returns 0 on success.
5188 */
5189void
5190qlt_init_atio_q_entries(struct scsi_qla_host *vha)
5191{
5192 struct qla_hw_data *ha = vha->hw;
5193 uint16_t cnt;
5194 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
5195
5196 if (!qla_tgt_mode_enabled(vha))
5197 return;
5198
5199 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
5200 pkt->u.raw.signature = ATIO_PROCESSED;
5201 pkt++;
5202 }
5203
5204}
5205
5206/*
5207 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
5208 * @ha: SCSI driver HA context
5209 */
5210void
5211qlt_24xx_process_atio_queue(struct scsi_qla_host *vha)
5212{
5213 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 5214 struct atio_from_isp *pkt;
5215 int cnt, i;
5216
5217 if (!vha->flags.online)
5218 return;
5219
5220 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
5221 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5222 cnt = pkt->u.raw.entry_count;
5223
5224 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
5225
5226 for (i = 0; i < cnt; i++) {
5227 ha->tgt.atio_ring_index++;
5228 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
5229 ha->tgt.atio_ring_index = 0;
5230 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
5231 } else
5232 ha->tgt.atio_ring_ptr++;
5233
5234 pkt->u.raw.signature = ATIO_PROCESSED;
5235 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
5236 }
5237 wmb();
5238 }
5239
5240 /* Adjust ring index */
aa230bc5 5241 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 5242}
5243
5244void
aa230bc5 5245qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 5246{
5247 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 5248 if (!QLA_TGT_MODE_ENABLED())
5249 return;
2d70c103 5250
aa230bc5
AE		 5251 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
5252 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
5253 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
5254
5255 if (IS_ATIO_MSIX_CAPABLE(ha)) {
5256 struct qla_msix_entry *msix = &ha->msix_entries[2];
5257 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
5258
5259 icb->msix_atio = cpu_to_le16(msix->entry);
5260 ql_dbg(ql_dbg_init, vha, 0xf072,
5261 "Registering ICB vector 0x%x for atio que.\n",
5262 msix->entry);
2d70c103
NB		 5263 }
5264}
5265
5266void
5267qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
5268{
5269 struct qla_hw_data *ha = vha->hw;
5270
5271 if (qla_tgt_mode_enabled(vha)) {
5272 if (!ha->tgt.saved_set) {
5273 /* We save only once */
5274 ha->tgt.saved_exchange_count = nv->exchange_count;
5275 ha->tgt.saved_firmware_options_1 =
5276 nv->firmware_options_1;
5277 ha->tgt.saved_firmware_options_2 =
5278 nv->firmware_options_2;
5279 ha->tgt.saved_firmware_options_3 =
5280 nv->firmware_options_3;
5281 ha->tgt.saved_set = 1;
5282 }
5283
5284 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5285
5286 /* Enable target mode */
5287 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5288
5289 /* Disable ini mode, if requested */
5290 if (!qla_ini_mode_enabled(vha))
5291 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
5292
5293 /* Disable Full Login after LIP */
5294 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5295 /* Enable initial LIP */
5296 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5297 /* Enable FC tapes support */
5298 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5299 /* Disable Full Login after LIP */
5300 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5301 /* Enable target PRLI control */
5302 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5303 } else {
5304 if (ha->tgt.saved_set) {
5305 nv->exchange_count = ha->tgt.saved_exchange_count;
5306 nv->firmware_options_1 =
5307 ha->tgt.saved_firmware_options_1;
5308 nv->firmware_options_2 =
5309 ha->tgt.saved_firmware_options_2;
5310 nv->firmware_options_3 =
5311 ha->tgt.saved_firmware_options_3;
5312 }
5313 return;
5314 }
5315
5316 /* out-of-order frames reassembly */
5317 nv->firmware_options_3 |= BIT_6|BIT_9;
5318
5319 if (ha->tgt.enable_class_2) {
5320 if (vha->flags.init_done)
5321 fc_host_supported_classes(vha->host) =
5322 FC_COS_CLASS2 | FC_COS_CLASS3;
5323
5324 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5325 } else {
5326 if (vha->flags.init_done)
5327 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5328
5329 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5330 }
5331}
5332
5333void
5334qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
5335 struct init_cb_24xx *icb)
5336{
5337 struct qla_hw_data *ha = vha->hw;
5338
5339 if (ha->tgt.node_name_set) {
5340 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5341 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5342 }
5343}
5344
aa230bc5
AE		 5345void
5346qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
5347{
5348 struct qla_hw_data *ha = vha->hw;
5349
5350 if (!QLA_TGT_MODE_ENABLED())
5351 return;
5352
5353 if (qla_tgt_mode_enabled(vha)) {
5354 if (!ha->tgt.saved_set) {
5355 /* We save only once */
5356 ha->tgt.saved_exchange_count = nv->exchange_count;
5357 ha->tgt.saved_firmware_options_1 =
5358 nv->firmware_options_1;
5359 ha->tgt.saved_firmware_options_2 =
5360 nv->firmware_options_2;
5361 ha->tgt.saved_firmware_options_3 =
5362 nv->firmware_options_3;
5363 ha->tgt.saved_set = 1;
5364 }
5365
5366 nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
5367
5368 /* Enable target mode */
5369 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
5370
5371 /* Disable ini mode, if requested */
5372 if (!qla_ini_mode_enabled(vha))
5373 nv->firmware_options_1 |=
5374 __constant_cpu_to_le32(BIT_5);
5375
5376 /* Disable Full Login after LIP */
5377 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
5378 /* Enable initial LIP */
5379 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
5380 /* Enable FC tapes support */
5381 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
5382 /* Disable Full Login after LIP */
5383 nv->host_p &= __constant_cpu_to_le32(~BIT_10);
5384 /* Enable target PRLI control */
5385 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
5386 } else {
5387 if (ha->tgt.saved_set) {
5388 nv->exchange_count = ha->tgt.saved_exchange_count;
5389 nv->firmware_options_1 =
5390 ha->tgt.saved_firmware_options_1;
5391 nv->firmware_options_2 =
5392 ha->tgt.saved_firmware_options_2;
5393 nv->firmware_options_3 =
5394 ha->tgt.saved_firmware_options_3;
5395 }
5396 return;
5397 }
5398
5399 /* out-of-order frames reassembly */
5400 nv->firmware_options_3 |= BIT_6|BIT_9;
5401
5402 if (ha->tgt.enable_class_2) {
5403 if (vha->flags.init_done)
5404 fc_host_supported_classes(vha->host) =
5405 FC_COS_CLASS2 | FC_COS_CLASS3;
5406
5407 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
5408 } else {
5409 if (vha->flags.init_done)
5410 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
5411
5412 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8);
5413 }
5414}
5415
5416void
5417qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
5418 struct init_cb_81xx *icb)
5419{
5420 struct qla_hw_data *ha = vha->hw;
5421
5422 if (!QLA_TGT_MODE_ENABLED())
5423 return;
5424
5425 if (ha->tgt.node_name_set) {
5426 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
5427 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
5428 }
5429}
5430
5431void
5432qlt_83xx_iospace_config(struct qla_hw_data *ha)
5433{
5434 if (!QLA_TGT_MODE_ENABLED())
5435 return;
5436
5437 ha->msix_count += 1; /* For ATIO Q */
5438}
5439
2d70c103
NB		 5440int
5441qlt_24xx_process_response_error(struct scsi_qla_host *vha,
5442 struct sts_entry_24xx *pkt)
5443{
5444 switch (pkt->entry_type) {
5445 case ABTS_RECV_24XX:
5446 case ABTS_RESP_24XX:
5447 case CTIO_TYPE7:
5448 case NOTIFY_ACK_TYPE:
f83adb61 5449 case CTIO_CRC2:
2d70c103
NB		 5450 return 1;
5451 default:
5452 return 0;
5453 }
5454}
5455
5456void
5457qlt_modify_vp_config(struct scsi_qla_host *vha,
5458 struct vp_config_entry_24xx *vpmod)
5459{
5460 if (qla_tgt_mode_enabled(vha))
5461 vpmod->options_idx1 &= ~BIT_5;
5462 /* Disable ini mode, if requested */
5463 if (!qla_ini_mode_enabled(vha))
5464 vpmod->options_idx1 &= ~BIT_4;
5465}
5466
5467void
5468qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
5469{
5470 if (!QLA_TGT_MODE_ENABLED())
5471 return;
5472
aa230bc5
AE		 5473 if (ha->mqenable || IS_QLA83XX(ha)) {
5474 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
5475 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
5476 } else {
5477 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
5478 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
5479 }
5480
0e8cd71c
SK		 5481 mutex_init(&base_vha->vha_tgt.tgt_mutex);
5482 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 5483 qlt_clear_mode(base_vha);
5484}
5485
aa230bc5
AE		 5486irqreturn_t
5487qla83xx_msix_atio_q(int irq, void *dev_id)
5488{
5489 struct rsp_que *rsp;
5490 scsi_qla_host_t *vha;
5491 struct qla_hw_data *ha;
5492 unsigned long flags;
5493
5494 rsp = (struct rsp_que *) dev_id;
5495 ha = rsp->hw;
5496 vha = pci_get_drvdata(ha->pdev);
5497
5498 spin_lock_irqsave(&ha->hardware_lock, flags);
5499
5500 qlt_24xx_process_atio_queue(vha);
5501 qla24xx_process_response_queue(vha, rsp);
5502
5503 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5504
5505 return IRQ_HANDLED;
5506}
5507
2d70c103
NB		 5508int
5509qlt_mem_alloc(struct qla_hw_data *ha)
5510{
5511 if (!QLA_TGT_MODE_ENABLED())
5512 return 0;
5513
5514 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
5515 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
5516 if (!ha->tgt.tgt_vp_map)
5517 return -ENOMEM;
5518
5519 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
5520 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
5521 &ha->tgt.atio_dma, GFP_KERNEL);
5522 if (!ha->tgt.atio_ring) {
5523 kfree(ha->tgt.tgt_vp_map);
5524 return -ENOMEM;
5525 }
5526 return 0;
5527}
5528
5529void
5530qlt_mem_free(struct qla_hw_data *ha)
5531{
5532 if (!QLA_TGT_MODE_ENABLED())
5533 return;
5534
5535 if (ha->tgt.atio_ring) {
5536 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
5537 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
5538 ha->tgt.atio_dma);
5539 }
5540 kfree(ha->tgt.tgt_vp_map);
5541}
5542
5543/* vport_slock to be held by the caller */
5544void
5545qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
5546{
5547 if (!QLA_TGT_MODE_ENABLED())
5548 return;
5549
5550 switch (cmd) {
5551 case SET_VP_IDX:
5552 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
5553 break;
5554 case SET_AL_PA:
5555 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
5556 break;
5557 case RESET_VP_IDX:
5558 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
5559 break;
5560 case RESET_AL_PA:
5561 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
5562 break;
5563 }
5564}
5565
5566static int __init qlt_parse_ini_mode(void)
5567{
5568 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
5569 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
5570 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
5571 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
5572 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
5573 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
5574 else
5575 return false;
5576
5577 return true;
5578}
5579
5580int __init qlt_init(void)
5581{
5582 int ret;
5583
5584 if (!qlt_parse_ini_mode()) {
5585 ql_log(ql_log_fatal, NULL, 0xe06b,
5586 "qlt_parse_ini_mode() failed\n");
5587 return -EINVAL;
5588 }
5589
5590 if (!QLA_TGT_MODE_ENABLED())
5591 return 0;
5592
2d70c103
NB		 5593 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
5594 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
5595 qla_tgt_mgmt_cmd), 0, NULL);
5596 if (!qla_tgt_mgmt_cmd_cachep) {
5597 ql_log(ql_log_fatal, NULL, 0xe06d,
5598 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 5599 return -ENOMEM;
2d70c103
NB		 5600 }
5601
5602 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
5603 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
5604 if (!qla_tgt_mgmt_cmd_mempool) {
5605 ql_log(ql_log_fatal, NULL, 0xe06e,
5606 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
5607 ret = -ENOMEM;
5608 goto out_mgmt_cmd_cachep;
5609 }
5610
5611 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
5612 if (!qla_tgt_wq) {
5613 ql_log(ql_log_fatal, NULL, 0xe06f,
5614 "alloc_workqueue for qla_tgt_wq failed\n");
5615 ret = -ENOMEM;
5616 goto out_cmd_mempool;
5617 }
5618 /*
5619 * Return 1 to signal that initiator-mode is being disabled
5620 */
5621 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
5622
5623out_cmd_mempool:
5624 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5625out_mgmt_cmd_cachep:
5626 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 5627 return ret;
5628}
5629
5630void qlt_exit(void)
5631{
5632 if (!QLA_TGT_MODE_ENABLED())
5633 return;
5634
5635 destroy_workqueue(qla_tgt_wq);
5636 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
5637 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 5638}
Linux kernel - Deliverables
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