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qla2xxx: Move atioq to a different lock to reduce lock contention
[linux-2.6-block.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
d154f350
AE		 45static int ql2xtgt_tape_enable;
46module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
2d70c103
NB		 50static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51module_param(qlini_mode, charp, S_IRUGO);
52MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
58 "\"enabled\" (default) - initiator mode will always stay enabled.");
59
aa230bc5 60int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103 61
33e79977
QT		 62static int temp_sam_status = SAM_STAT_BUSY;
63
2d70c103
NB		 64/*
65 * From scsi/fc/fc_fcp.h
66 */
67enum fcp_resp_rsp_codes {
68 FCP_TMF_CMPL = 0,
69 FCP_DATA_LEN_INVALID = 1,
70 FCP_CMND_FIELDS_INVALID = 2,
71 FCP_DATA_PARAM_MISMATCH = 3,
72 FCP_TMF_REJECTED = 4,
73 FCP_TMF_FAILED = 5,
74 FCP_TMF_INVALID_LUN = 9,
75};
76
77/*
78 * fc_pri_ta from scsi/fc/fc_fcp.h
79 */
80#define FCP_PTA_SIMPLE 0 /* simple task attribute */
81#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
82#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 83#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 84#define FCP_PTA_MASK 7 /* mask for task attribute field */
85#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
86#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
87
88/*
89 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
90 * must be called under HW lock and could unlock/lock it inside.
91 * It isn't an issue, since in the current implementation on the time when
92 * those functions are called:
93 *
94 * - Either context is IRQ and only IRQ handler can modify HW data,
95 * including rings related fields,
96 *
97 * - Or access to target mode variables from struct qla_tgt doesn't
98 * cross those functions boundaries, except tgt_stop, which
99 * additionally protected by irq_cmd_count.
100 */
101/* Predefs for callbacks handed to qla2xxx LLD */
102static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
2f424b9b 103 struct atio_from_isp *pkt, uint8_t);
2d70c103
NB		 104static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
105static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
106 int fn, void *iocb, int flags);
107static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
108 *cmd, struct atio_from_isp *atio, int ha_locked);
109static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
110 struct qla_tgt_srr_imm *imm, int ha_lock);
b6a029e1
AE		 111static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
112 struct qla_tgt_cmd *cmd);
33e79977
QT		 113static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
114 struct atio_from_isp *atio, uint16_t status, int qfull);
55a9066f 115static void qlt_disable_vha(struct scsi_qla_host *vha);
b2032fd5 116static void qlt_clear_tgt_db(struct qla_tgt *tgt);
a6ca8878
AP		 117static void qlt_send_notify_ack(struct scsi_qla_host *vha,
118 struct imm_ntfy_from_isp *ntfy,
119 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
120 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
b7bd104e
AP		 121static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
122 struct imm_ntfy_from_isp *imm, int ha_locked);
2d70c103
NB		 123/*
124 * Global Variables
125 */
2d70c103 126static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
b7bd104e 127static struct kmem_cache *qla_tgt_plogi_cachep;
2d70c103
NB		 128static mempool_t *qla_tgt_mgmt_cmd_mempool;
129static struct workqueue_struct *qla_tgt_wq;
130static DEFINE_MUTEX(qla_tgt_mutex);
131static LIST_HEAD(qla_tgt_glist);
132
df673274
AP		 133/* This API intentionally takes dest as a parameter, rather than returning
134 * int value to avoid caller forgetting to issue wmb() after the store */
135void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
136{
137 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
138 *dest = atomic_inc_return(&base_vha->generation_tick);
139 /* memory barrier */
140 wmb();
141}
142
2d70c103
NB		 143/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
144static struct qla_tgt_sess *qlt_find_sess_by_port_name(
145 struct qla_tgt *tgt,
146 const uint8_t *port_name)
147{
148 struct qla_tgt_sess *sess;
149
150 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
151 if (!memcmp(sess->port_name, port_name, WWN_SIZE))
152 return sess;
153 }
154
155 return NULL;
156}
157
158/* Might release hw lock, then reaquire!! */
159static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
160{
161 /* Send marker if required */
162 if (unlikely(vha->marker_needed != 0)) {
163 int rc = qla2x00_issue_marker(vha, vha_locked);
164 if (rc != QLA_SUCCESS) {
165 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
166 "qla_target(%d): issue_marker() failed\n",
167 vha->vp_idx);
168 }
169 return rc;
170 }
171 return QLA_SUCCESS;
172}
173
174static inline
175struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
176 uint8_t *d_id)
177{
178 struct qla_hw_data *ha = vha->hw;
179 uint8_t vp_idx;
180
181 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
182 return NULL;
183
184 if (vha->d_id.b.al_pa == d_id[2])
185 return vha;
186
187 BUG_ON(ha->tgt.tgt_vp_map == NULL);
188 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
189 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
190 return ha->tgt.tgt_vp_map[vp_idx].vha;
191
192 return NULL;
193}
194
195static inline
196struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
197 uint16_t vp_idx)
198{
199 struct qla_hw_data *ha = vha->hw;
200
201 if (vha->vp_idx == vp_idx)
202 return vha;
203
204 BUG_ON(ha->tgt.tgt_vp_map == NULL);
205 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
206 return ha->tgt.tgt_vp_map[vp_idx].vha;
207
208 return NULL;
209}
210
33e79977
QT		 211static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
212{
213 unsigned long flags;
214
215 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
216
217 vha->hw->tgt.num_pend_cmds++;
218 if (vha->hw->tgt.num_pend_cmds > vha->hw->qla_stats.stat_max_pend_cmds)
219 vha->hw->qla_stats.stat_max_pend_cmds =
220 vha->hw->tgt.num_pend_cmds;
221 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
222}
223static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
224{
225 unsigned long flags;
226
227 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
228 vha->hw->tgt.num_pend_cmds--;
229 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
230}
231
55a9066f 232static void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2f424b9b 233 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103 234{
f83adb61
QT		 235 ql_dbg(ql_dbg_tgt, vha, 0xe072,
236 "%s: qla_target(%d): type %x ox_id %04x\n",
237 __func__, vha->vp_idx, atio->u.raw.entry_type,
238 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
239
2d70c103
NB		 240 switch (atio->u.raw.entry_type) {
241 case ATIO_TYPE7:
242 {
243 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
244 atio->u.isp24.fcp_hdr.d_id);
245 if (unlikely(NULL == host)) {
246 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
247 "qla_target(%d): Received ATIO_TYPE7 "
248 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
249 atio->u.isp24.fcp_hdr.d_id[0],
250 atio->u.isp24.fcp_hdr.d_id[1],
251 atio->u.isp24.fcp_hdr.d_id[2]);
252 break;
253 }
2f424b9b 254 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 255 break;
256 }
257
258 case IMMED_NOTIFY_TYPE:
259 {
260 struct scsi_qla_host *host = vha;
261 struct imm_ntfy_from_isp *entry =
262 (struct imm_ntfy_from_isp *)atio;
263
264 if ((entry->u.isp24.vp_index != 0xFF) &&
265 (entry->u.isp24.nport_handle != 0xFFFF)) {
266 host = qlt_find_host_by_vp_idx(vha,
267 entry->u.isp24.vp_index);
268 if (unlikely(!host)) {
269 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
270 "qla_target(%d): Received "
271 "ATIO (IMMED_NOTIFY_TYPE) "
272 "with unknown vp_index %d\n",
273 vha->vp_idx, entry->u.isp24.vp_index);
274 break;
275 }
276 }
2f424b9b 277 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 278 break;
279 }
280
281 default:
282 ql_dbg(ql_dbg_tgt, vha, 0xe040,
283 "qla_target(%d): Received unknown ATIO atio "
284 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
285 break;
286 }
287
288 return;
289}
290
291void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
292{
293 switch (pkt->entry_type) {
f83adb61
QT		 294 case CTIO_CRC2:
295 ql_dbg(ql_dbg_tgt, vha, 0xe073,
296 "qla_target(%d):%s: CRC2 Response pkt\n",
297 vha->vp_idx, __func__);
2d70c103
NB		 298 case CTIO_TYPE7:
299 {
300 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
301 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
302 entry->vp_index);
303 if (unlikely(!host)) {
304 ql_dbg(ql_dbg_tgt, vha, 0xe041,
305 "qla_target(%d): Response pkt (CTIO_TYPE7) "
306 "received, with unknown vp_index %d\n",
307 vha->vp_idx, entry->vp_index);
308 break;
309 }
310 qlt_response_pkt(host, pkt);
311 break;
312 }
313
314 case IMMED_NOTIFY_TYPE:
315 {
316 struct scsi_qla_host *host = vha;
317 struct imm_ntfy_from_isp *entry =
318 (struct imm_ntfy_from_isp *)pkt;
319
320 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
321 if (unlikely(!host)) {
322 ql_dbg(ql_dbg_tgt, vha, 0xe042,
323 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
324 "received, with unknown vp_index %d\n",
325 vha->vp_idx, entry->u.isp24.vp_index);
326 break;
327 }
328 qlt_response_pkt(host, pkt);
329 break;
330 }
331
332 case NOTIFY_ACK_TYPE:
333 {
334 struct scsi_qla_host *host = vha;
335 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
336
337 if (0xFF != entry->u.isp24.vp_index) {
338 host = qlt_find_host_by_vp_idx(vha,
339 entry->u.isp24.vp_index);
340 if (unlikely(!host)) {
341 ql_dbg(ql_dbg_tgt, vha, 0xe043,
342 "qla_target(%d): Response "
343 "pkt (NOTIFY_ACK_TYPE) "
344 "received, with unknown "
345 "vp_index %d\n", vha->vp_idx,
346 entry->u.isp24.vp_index);
347 break;
348 }
349 }
350 qlt_response_pkt(host, pkt);
351 break;
352 }
353
354 case ABTS_RECV_24XX:
355 {
356 struct abts_recv_from_24xx *entry =
357 (struct abts_recv_from_24xx *)pkt;
358 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
359 entry->vp_index);
360 if (unlikely(!host)) {
361 ql_dbg(ql_dbg_tgt, vha, 0xe044,
362 "qla_target(%d): Response pkt "
363 "(ABTS_RECV_24XX) received, with unknown "
364 "vp_index %d\n", vha->vp_idx, entry->vp_index);
365 break;
366 }
367 qlt_response_pkt(host, pkt);
368 break;
369 }
370
371 case ABTS_RESP_24XX:
372 {
373 struct abts_resp_to_24xx *entry =
374 (struct abts_resp_to_24xx *)pkt;
375 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
376 entry->vp_index);
377 if (unlikely(!host)) {
378 ql_dbg(ql_dbg_tgt, vha, 0xe045,
379 "qla_target(%d): Response pkt "
380 "(ABTS_RECV_24XX) received, with unknown "
381 "vp_index %d\n", vha->vp_idx, entry->vp_index);
382 break;
383 }
384 qlt_response_pkt(host, pkt);
385 break;
386 }
387
388 default:
389 qlt_response_pkt(vha, pkt);
390 break;
391 }
392
393}
394
b7bd104e
AP		 395/*
396 * All qlt_plogi_ack_t operations are protected by hardware_lock
397 */
398
399/*
400 * This is a zero-base ref-counting solution, since hardware_lock
401 * guarantees that ref_count is not modified concurrently.
402 * Upon successful return content of iocb is undefined
403 */
404static qlt_plogi_ack_t *
405qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
406 struct imm_ntfy_from_isp *iocb)
407{
408 qlt_plogi_ack_t *pla;
409
410 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
411 if (pla->id.b24 == id->b24) {
412 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
413 pla->iocb = *iocb;
414 return pla;
415 }
416 }
417
418 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
419 if (!pla) {
420 ql_dbg(ql_dbg_async, vha, 0x5088,
421 "qla_target(%d): Allocation of plogi_ack failed\n",
422 vha->vp_idx);
423 return NULL;
424 }
425
426 pla->iocb = *iocb;
427 pla->id = *id;
428 list_add_tail(&pla->list, &vha->plogi_ack_list);
429
430 return pla;
431}
432
433static void qlt_plogi_ack_unref(struct scsi_qla_host *vha, qlt_plogi_ack_t *pla)
434{
435 BUG_ON(!pla->ref_count);
436 pla->ref_count--;
437
438 if (pla->ref_count)
439 return;
440
441 ql_dbg(ql_dbg_async, vha, 0x5089,
442 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
443 " exch %#x ox_id %#x\n", pla->iocb.u.isp24.port_name,
444 pla->iocb.u.isp24.port_id[2], pla->iocb.u.isp24.port_id[1],
445 pla->iocb.u.isp24.port_id[0],
446 le16_to_cpu(pla->iocb.u.isp24.nport_handle),
447 pla->iocb.u.isp24.exchange_address, pla->iocb.ox_id);
448 qlt_send_notify_ack(vha, &pla->iocb, 0, 0, 0, 0, 0, 0);
449
450 list_del(&pla->list);
451 kmem_cache_free(qla_tgt_plogi_cachep, pla);
452}
453
454static void
455qlt_plogi_ack_link(struct scsi_qla_host *vha, qlt_plogi_ack_t *pla,
456 struct qla_tgt_sess *sess, qlt_plogi_link_t link)
457{
458 /* Inc ref_count first because link might already be pointing at pla */
459 pla->ref_count++;
460
461 if (sess->plogi_link[link])
462 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
463
464 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
465 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
466 " s_id %02x:%02x:%02x, ref=%d\n", sess, link, sess->port_name,
467 pla->iocb.u.isp24.port_name, pla->iocb.u.isp24.port_id[2],
468 pla->iocb.u.isp24.port_id[1], pla->iocb.u.isp24.port_id[0],
469 pla->ref_count);
470
471 sess->plogi_link[link] = pla;
472}
473
71cdc079
AP		 474typedef struct {
475 /* These fields must be initialized by the caller */
476 port_id_t id;
477 /*
478 * number of cmds dropped while we were waiting for
479 * initiator to ack LOGO initialize to 1 if LOGO is
480 * triggered by a command, otherwise, to 0
481 */
482 int cmd_count;
483
484 /* These fields are used by callee */
485 struct list_head list;
486} qlt_port_logo_t;
487
488static void
489qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
490{
491 qlt_port_logo_t *tmp;
492 int res;
493
494 mutex_lock(&vha->vha_tgt.tgt_mutex);
495
496 list_for_each_entry(tmp, &vha->logo_list, list) {
497 if (tmp->id.b24 == logo->id.b24) {
498 tmp->cmd_count += logo->cmd_count;
499 mutex_unlock(&vha->vha_tgt.tgt_mutex);
500 return;
501 }
502 }
503
504 list_add_tail(&logo->list, &vha->logo_list);
505
506 mutex_unlock(&vha->vha_tgt.tgt_mutex);
507
508 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
509
510 mutex_lock(&vha->vha_tgt.tgt_mutex);
511 list_del(&logo->list);
512 mutex_unlock(&vha->vha_tgt.tgt_mutex);
513
b7bd104e
AP		 514 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
515 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
516 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
517 logo->cmd_count, res);
71cdc079
AP		 518}
519
2d70c103
NB		 520static void qlt_free_session_done(struct work_struct *work)
521{
522 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
523 free_work);
524 struct qla_tgt *tgt = sess->tgt;
525 struct scsi_qla_host *vha = sess->vha;
526 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 527 unsigned long flags;
528 bool logout_started = false;
529 fc_port_t fcport;
530
531 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
532 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 533 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878
AP		 534 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
535 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
536 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 537 sess->send_els_logo);
2d70c103
NB		 538
539 BUG_ON(!tgt);
a6ca8878 540
71cdc079
AP		 541 if (sess->send_els_logo) {
542 qlt_port_logo_t logo;
543 logo.id = sess->s_id;
544 logo.cmd_count = 0;
545 qlt_send_first_logo(vha, &logo);
546 }
547
a6ca8878
AP		 548 if (sess->logout_on_delete) {
549 int rc;
550
551 memset(&fcport, 0, sizeof(fcport));
552 fcport.loop_id = sess->loop_id;
553 fcport.d_id = sess->s_id;
554 memcpy(fcport.port_name, sess->port_name, WWN_SIZE);
555 fcport.vha = vha;
556 fcport.tgt_session = sess;
557
558 rc = qla2x00_post_async_logout_work(vha, &fcport, NULL);
559 if (rc != QLA_SUCCESS)
560 ql_log(ql_log_warn, vha, 0xf085,
561 "Schedule logo failed sess %p rc %d\n",
562 sess, rc);
563 else
564 logout_started = true;
565 }
566
2d70c103
NB		 567 /*
568 * Release the target session for FC Nexus from fabric module code.
569 */
570 if (sess->se_sess != NULL)
571 ha->tgt.tgt_ops->free_session(sess);
572
a6ca8878
AP		 573 if (logout_started) {
574 bool traced = false;
575
576 while (!ACCESS_ONCE(sess->logout_completed)) {
577 if (!traced) {
578 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
579 "%s: waiting for sess %p logout\n",
580 __func__, sess);
581 traced = true;
582 }
583 msleep(100);
584 }
585
586 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf087,
587 "%s: sess %p logout completed\n",
588 __func__, sess);
589 }
590
591 spin_lock_irqsave(&ha->hardware_lock, flags);
592
b7bd104e
AP		 593 {
594 qlt_plogi_ack_t *own =
595 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
596 qlt_plogi_ack_t *con =
597 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
598
599 if (con) {
600 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
601 "se_sess %p / sess %p port %8phC is gone,"
602 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
603 sess->se_sess, sess, sess->port_name,
604 own ? "releasing own PLOGI" :
605 "no own PLOGI pending",
606 own ? own->ref_count : -1,
607 con->iocb.u.isp24.port_name, con->ref_count);
608 qlt_plogi_ack_unref(vha, con);
609 } else {
610 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
611 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
612 sess->se_sess, sess, sess->port_name,
613 own ? "releasing own PLOGI" :
614 "no own PLOGI pending",
615 own ? own->ref_count : -1);
616 }
617
618 if (own)
619 qlt_plogi_ack_unref(vha, own);
620 }
a6ca8878
AP		 621
622 list_del(&sess->sess_list_entry);
623
624 spin_unlock_irqrestore(&ha->hardware_lock, flags);
625
2d70c103
NB		 626 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
627 "Unregistration of sess %p finished\n", sess);
628
629 kfree(sess);
630 /*
631 * We need to protect against race, when tgt is freed before or
632 * inside wake_up()
633 */
634 tgt->sess_count--;
635 if (tgt->sess_count == 0)
636 wake_up_all(&tgt->waitQ);
637}
638
7560151b 639/* ha->tgt.sess_lock supposed to be held on entry */
2d70c103
NB		 640void qlt_unreg_sess(struct qla_tgt_sess *sess)
641{
642 struct scsi_qla_host *vha = sess->vha;
643
644 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
645
a6ca8878
AP		 646 if (!list_empty(&sess->del_list_entry))
647 list_del_init(&sess->del_list_entry);
648 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
2d70c103
NB		 649
650 INIT_WORK(&sess->free_work, qlt_free_session_done);
651 schedule_work(&sess->free_work);
652}
653EXPORT_SYMBOL(qlt_unreg_sess);
654
7560151b 655
2d70c103
NB		 656static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
657{
658 struct qla_hw_data *ha = vha->hw;
659 struct qla_tgt_sess *sess = NULL;
660 uint32_t unpacked_lun, lun = 0;
661 uint16_t loop_id;
662 int res = 0;
663 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
664 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
7560151b 665 unsigned long flags;
2d70c103
NB		 666
667 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
668 if (loop_id == 0xFFFF) {
2d70c103 669 /* Global event */
b2032fd5 670 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 671 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 672 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 673 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
b2032fd5 674#if 0 /* FIXME: do we need to choose a session here? */
2d70c103
NB		 675 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
676 sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
677 typeof(*sess), sess_list_entry);
678 switch (mcmd) {
679 case QLA_TGT_NEXUS_LOSS_SESS:
680 mcmd = QLA_TGT_NEXUS_LOSS;
681 break;
682 case QLA_TGT_ABORT_ALL_SESS:
683 mcmd = QLA_TGT_ABORT_ALL;
684 break;
685 case QLA_TGT_NEXUS_LOSS:
686 case QLA_TGT_ABORT_ALL:
687 break;
688 default:
689 ql_dbg(ql_dbg_tgt, vha, 0xe046,
690 "qla_target(%d): Not allowed "
691 "command %x in %s", vha->vp_idx,
692 mcmd, __func__);
693 sess = NULL;
694 break;
695 }
696 } else
697 sess = NULL;
698#endif
699 } else {
7560151b 700 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 701 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 702 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 703 }
704
705 ql_dbg(ql_dbg_tgt, vha, 0xe000,
706 "Using sess for qla_tgt_reset: %p\n", sess);
707 if (!sess) {
708 res = -ESRCH;
709 return res;
710 }
711
712 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 713 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
714 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 715 mcmd, loop_id);
716
717 lun = a->u.isp24.fcp_cmnd.lun;
718 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
719
720 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
721 iocb, QLA24XX_MGMT_SEND_NACK);
722}
723
7560151b 724/* ha->tgt.sess_lock supposed to be held on entry */
2d70c103
NB		 725static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
726 bool immediate)
727{
728 struct qla_tgt *tgt = sess->tgt;
729 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
730
a6ca8878
AP		 731 if (sess->deleted) {
732 /* Upgrade to unconditional deletion in case it was temporary */
733 if (immediate && sess->deleted == QLA_SESS_DELETION_PENDING)
734 list_del(&sess->del_list_entry);
735 else
736 return;
737 }
2d70c103
NB		 738
739 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
740 "Scheduling sess %p for deletion\n", sess);
2d70c103 741
a6ca8878 742 if (immediate) {
2d70c103 743 dev_loss_tmo = 0;
a6ca8878
AP		 744 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
745 list_add(&sess->del_list_entry, &tgt->del_sess_list);
746 } else {
747 sess->deleted = QLA_SESS_DELETION_PENDING;
748 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
749 }
2d70c103
NB		 750
751 sess->expires = jiffies + dev_loss_tmo * HZ;
752
753 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
df673274
AP		 754 "qla_target(%d): session for port %8phC (loop ID %d s_id %02x:%02x:%02x)"
755 " scheduled for deletion in %u secs (expires: %lu) immed: %d, logout: %d, gen: %#x\n",
756 sess->vha->vp_idx, sess->port_name, sess->loop_id,
757 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
758 dev_loss_tmo, sess->expires, immediate, sess->logout_on_delete,
759 sess->generation);
2d70c103
NB		 760
761 if (immediate)
a6ca8878 762 mod_delayed_work(system_wq, &tgt->sess_del_work, 0);
2d70c103
NB		 763 else
764 schedule_delayed_work(&tgt->sess_del_work,
63832aab 765 sess->expires - jiffies);
2d70c103
NB		 766}
767
7560151b 768/* ha->tgt.sess_lock supposed to be held on entry */
c5701042 769static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103
NB		 770{
771 struct qla_tgt_sess *sess;
772
773 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
774 qlt_schedule_sess_for_deletion(sess, true);
775
776 /* At this point tgt could be already dead */
777}
778
779static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
780 uint16_t *loop_id)
781{
782 struct qla_hw_data *ha = vha->hw;
783 dma_addr_t gid_list_dma;
784 struct gid_list_info *gid_list;
785 char *id_iter;
786 int res, rc, i;
787 uint16_t entries;
788
789 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
790 &gid_list_dma, GFP_KERNEL);
791 if (!gid_list) {
792 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
793 "qla_target(%d): DMA Alloc failed of %u\n",
794 vha->vp_idx, qla2x00_gid_list_size(ha));
795 return -ENOMEM;
796 }
797
798 /* Get list of logged in devices */
799 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
800 if (rc != QLA_SUCCESS) {
801 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
802 "qla_target(%d): get_id_list() failed: %x\n",
803 vha->vp_idx, rc);
71cdc079 804 res = -EBUSY;
2d70c103
NB		 805 goto out_free_id_list;
806 }
807
808 id_iter = (char *)gid_list;
71cdc079 809 res = -ENOENT;
2d70c103
NB		 810 for (i = 0; i < entries; i++) {
811 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
812 if ((gid->al_pa == s_id[2]) &&
813 (gid->area == s_id[1]) &&
814 (gid->domain == s_id[0])) {
815 *loop_id = le16_to_cpu(gid->loop_id);
816 res = 0;
817 break;
818 }
819 id_iter += ha->gid_list_info_size;
820 }
821
822out_free_id_list:
823 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
824 gid_list, gid_list_dma);
825 return res;
826}
827
7560151b 828/* ha->tgt.sess_lock supposed to be held on entry */
2d70c103
NB		 829static void qlt_undelete_sess(struct qla_tgt_sess *sess)
830{
a6ca8878 831 BUG_ON(sess->deleted != QLA_SESS_DELETION_PENDING);
2d70c103 832
a6ca8878 833 list_del_init(&sess->del_list_entry);
2d70c103
NB		 834 sess->deleted = 0;
835}
836
837static void qlt_del_sess_work_fn(struct delayed_work *work)
838{
839 struct qla_tgt *tgt = container_of(work, struct qla_tgt,
840 sess_del_work);
841 struct scsi_qla_host *vha = tgt->vha;
842 struct qla_hw_data *ha = vha->hw;
843 struct qla_tgt_sess *sess;
63832aab 844 unsigned long flags, elapsed;
2d70c103 845
7560151b 846 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 847 while (!list_empty(&tgt->del_sess_list)) {
848 sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
849 del_list_entry);
63832aab
SU		 850 elapsed = jiffies;
851 if (time_after_eq(elapsed, sess->expires)) {
a6ca8878
AP		 852 /* No turning back */
853 list_del_init(&sess->del_list_entry);
854 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
2d70c103 855
08234e3a
JE		 856 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
857 "Timeout: sess %p about to be deleted\n",
858 sess);
859 ha->tgt.tgt_ops->shutdown_sess(sess);
860 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 861 } else {
862 schedule_delayed_work(&tgt->sess_del_work,
63832aab 863 sess->expires - elapsed);
2d70c103
NB		 864 break;
865 }
866 }
7560151b 867 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 868}
869
870/*
871 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
872 * Caller must put it.
873 */
874static struct qla_tgt_sess *qlt_create_sess(
875 struct scsi_qla_host *vha,
876 fc_port_t *fcport,
877 bool local)
878{
879 struct qla_hw_data *ha = vha->hw;
880 struct qla_tgt_sess *sess;
881 unsigned long flags;
882 unsigned char be_sid[3];
883
884 /* Check to avoid double sessions */
7560151b 885 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
0e8cd71c 886 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
2d70c103
NB		 887 sess_list_entry) {
888 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
889 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
890 "Double sess %p found (s_id %x:%x:%x, "
891 "loop_id %d), updating to d_id %x:%x:%x, "
892 "loop_id %d", sess, sess->s_id.b.domain,
893 sess->s_id.b.al_pa, sess->s_id.b.area,
894 sess->loop_id, fcport->d_id.b.domain,
895 fcport->d_id.b.al_pa, fcport->d_id.b.area,
896 fcport->loop_id);
897
a6ca8878
AP		 898 /* Cannot undelete at this point */
899 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
7560151b 900 spin_unlock_irqrestore(&ha->tgt.sess_lock,
a6ca8878
AP		 901 flags);
902 return NULL;
903 }
904
2d70c103
NB		 905 if (sess->deleted)
906 qlt_undelete_sess(sess);
907
908 kref_get(&sess->se_sess->sess_kref);
c8292d1d
RD		 909 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
910 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
911
2d70c103
NB		 912 if (sess->local && !local)
913 sess->local = 0;
df673274
AP		 914
915 qlt_do_generation_tick(vha, &sess->generation);
916
7560151b 917 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 918
919 return sess;
920 }
921 }
7560151b 922 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 923
924 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
925 if (!sess) {
926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
7b833558
OK		 927 "qla_target(%u): session allocation failed, all commands "
928 "from port %8phC will be refused", vha->vp_idx,
929 fcport->port_name);
2d70c103
NB		 930
931 return NULL;
932 }
0e8cd71c 933 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 934 sess->vha = vha;
935 sess->s_id = fcport->d_id;
936 sess->loop_id = fcport->loop_id;
937 sess->local = local;
a6ca8878
AP		 938 INIT_LIST_HEAD(&sess->del_list_entry);
939
940 /* Under normal circumstances we want to logout from firmware when
941 * session eventually ends and release corresponding nport handle.
942 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
943 * code will adjust these flags as necessary. */
944 sess->logout_on_delete = 1;
945 sess->keep_nport_handle = 0;
2d70c103
NB		 946
947 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
948 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
0e8cd71c 949 sess, vha->vha_tgt.qla_tgt);
2d70c103
NB		 950
951 be_sid[0] = sess->s_id.b.domain;
952 be_sid[1] = sess->s_id.b.area;
953 be_sid[2] = sess->s_id.b.al_pa;
954 /*
955 * Determine if this fc_port->port_name is allowed to access
956 * target mode using explict NodeACLs+MappedLUNs, or using
957 * TPG demo mode. If this is successful a target mode FC nexus
958 * is created.
959 */
960 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
961 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
962 kfree(sess);
963 return NULL;
964 }
965 /*
966 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
7560151b 967 * access across ->tgt.sess_lock reaquire.
2d70c103
NB		 968 */
969 kref_get(&sess->se_sess->sess_kref);
970
c8292d1d 971 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
2d70c103
NB		 972 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
973 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
974
7560151b 975 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
0e8cd71c
SK		 976 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
977 vha->vha_tgt.qla_tgt->sess_count++;
df673274 978 qlt_do_generation_tick(vha, &sess->generation);
7560151b 979 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 980
981 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 982 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
983 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
984 vha->vp_idx, local ? "local " : "", fcport->port_name,
985 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
986 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 987
988 return sess;
989}
990
991/*
df673274 992 * Called from qla2x00_reg_remote_port()
2d70c103
NB		 993 */
994void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
995{
996 struct qla_hw_data *ha = vha->hw;
0e8cd71c 997 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 998 struct qla_tgt_sess *sess;
999 unsigned long flags;
1000
1001 if (!vha->hw->tgt.tgt_ops)
1002 return;
1003
1004 if (!tgt || (fcport->port_type != FCT_INITIATOR))
1005 return;
1006
0e8cd71c
SK		 1007 if (qla_ini_mode_enabled(vha))
1008 return;
1009
7560151b 1010 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1011 if (tgt->tgt_stop) {
7560151b 1012 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1013 return;
1014 }
1015 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
1016 if (!sess) {
7560151b 1017 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1018
0e8cd71c 1019 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1020 sess = qlt_create_sess(vha, fcport, false);
0e8cd71c 1021 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1022
7560151b 1023 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
a6ca8878
AP		 1024 } else if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1025 /* Point of no return */
7560151b 1026 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
a6ca8878 1027 return;
2d70c103
NB		 1028 } else {
1029 kref_get(&sess->se_sess->sess_kref);
1030
1031 if (sess->deleted) {
1032 qlt_undelete_sess(sess);
1033
1034 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
7b833558
OK		 1035 "qla_target(%u): %ssession for port %8phC "
1036 "(loop ID %d) reappeared\n", vha->vp_idx,
1037 sess->local ? "local " : "", sess->port_name,
2d70c103
NB		 1038 sess->loop_id);
1039
1040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
1041 "Reappeared sess %p\n", sess);
1042 }
c8292d1d
RD		 1043 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
1044 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
2d70c103
NB		 1045 }
1046
1047 if (sess && sess->local) {
1048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
1049 "qla_target(%u): local session for "
7b833558
OK		 1050 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
1051 fcport->port_name, sess->loop_id);
2d70c103
NB		 1052 sess->local = 0;
1053 }
2d70c103 1054 ha->tgt.tgt_ops->put_sess(sess);
7560151b 1055 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1056}
1057
df673274
AP		 1058/*
1059 * max_gen - specifies maximum session generation
1060 * at which this deletion requestion is still valid
1061 */
1062void
1063qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1064{
0e8cd71c 1065 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 1066 struct qla_tgt_sess *sess;
7560151b 1067 unsigned long flags;
2d70c103
NB		 1068
1069 if (!vha->hw->tgt.tgt_ops)
1070 return;
1071
b2032fd5 1072 if (!tgt)
2d70c103
NB		 1073 return;
1074
7560151b 1075 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1076 if (tgt->tgt_stop) {
7560151b 1077 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1078 return;
1079 }
1080 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
1081 if (!sess) {
7560151b 1082 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1083 return;
1084 }
1085
df673274 1086 if (max_gen - sess->generation < 0) {
7560151b 1087 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1088 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1089 "Ignoring stale deletion request for se_sess %p / sess %p"
1090 " for port %8phC, req_gen %d, sess_gen %d\n",
1091 sess->se_sess, sess, sess->port_name, max_gen,
1092 sess->generation);
1093 return;
1094 }
1095
2d70c103
NB		 1096 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1097
1098 sess->local = 1;
1099 qlt_schedule_sess_for_deletion(sess, false);
7560151b 1100 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1101}
1102
1103static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1104{
1105 struct qla_hw_data *ha = tgt->ha;
1106 unsigned long flags;
1107 int res;
1108 /*
1109 * We need to protect against race, when tgt is freed before or
1110 * inside wake_up()
1111 */
1112 spin_lock_irqsave(&ha->hardware_lock, flags);
1113 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1114 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
1115 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
1116 res = (tgt->sess_count == 0);
1117 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1118
1119 return res;
1120}
1121
1122/* Called by tcm_qla2xxx configfs code */
3c231bda 1123int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1124{
1125 struct scsi_qla_host *vha = tgt->vha;
1126 struct qla_hw_data *ha = tgt->ha;
1127 unsigned long flags;
1128
3c231bda
NB		 1129 mutex_lock(&qla_tgt_mutex);
1130 if (!vha->fc_vport) {
1131 struct Scsi_Host *sh = vha->host;
1132 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1133 bool npiv_vports;
1134
1135 spin_lock_irqsave(sh->host_lock, flags);
1136 npiv_vports = (fc_host->npiv_vports_inuse);
1137 spin_unlock_irqrestore(sh->host_lock, flags);
1138
1139 if (npiv_vports) {
1140 mutex_unlock(&qla_tgt_mutex);
1141 return -EPERM;
1142 }
1143 }
2d70c103
NB		 1144 if (tgt->tgt_stop || tgt->tgt_stopped) {
1145 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1146 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1147 mutex_unlock(&qla_tgt_mutex);
1148 return -EPERM;
2d70c103
NB		 1149 }
1150
1151 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1152 vha->host_no, vha);
1153 /*
1154 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1155 * Lock is needed, because we still can get an incoming packet.
1156 */
0e8cd71c 1157 mutex_lock(&vha->vha_tgt.tgt_mutex);
7560151b 1158 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1159 tgt->tgt_stop = 1;
c5701042 1160 qlt_clear_tgt_db(tgt);
7560151b 1161 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
0e8cd71c 1162 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1163 mutex_unlock(&qla_tgt_mutex);
2d70c103 1164
43829731 1165 flush_delayed_work(&tgt->sess_del_work);
2d70c103
NB		 1166
1167 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1168 "Waiting for sess works (tgt %p)", tgt);
1169 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1170 while (!list_empty(&tgt->sess_works_list)) {
1171 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1172 flush_scheduled_work();
1173 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1174 }
1175 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1176
1177 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1178 "Waiting for tgt %p: list_empty(sess_list)=%d "
1179 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
1180 tgt->sess_count);
1181
1182 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1183
1184 /* Big hammer */
1185 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
1186 qlt_disable_vha(vha);
1187
1188 /* Wait for sessions to clear out (just in case) */
1189 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 1190 return 0;
2d70c103
NB		 1191}
1192EXPORT_SYMBOL(qlt_stop_phase1);
1193
1194/* Called by tcm_qla2xxx configfs code */
1195void qlt_stop_phase2(struct qla_tgt *tgt)
1196{
1197 struct qla_hw_data *ha = tgt->ha;
0e8cd71c 1198 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 1199 unsigned long flags;
1200
1201 if (tgt->tgt_stopped) {
0e8cd71c 1202 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1203 "Already in tgt->tgt_stopped state\n");
1204 dump_stack();
1205 return;
1206 }
1207
0e8cd71c 1208 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
2d70c103
NB		 1209 "Waiting for %d IRQ commands to complete (tgt %p)",
1210 tgt->irq_cmd_count, tgt);
1211
0e8cd71c 1212 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1213 spin_lock_irqsave(&ha->hardware_lock, flags);
2f424b9b 1214 while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) {
2d70c103
NB		 1215 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1216 udelay(2);
1217 spin_lock_irqsave(&ha->hardware_lock, flags);
1218 }
1219 tgt->tgt_stop = 0;
1220 tgt->tgt_stopped = 1;
1221 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 1222 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1223
0e8cd71c 1224 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
2d70c103
NB		 1225 tgt);
1226}
1227EXPORT_SYMBOL(qlt_stop_phase2);
1228
1229/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1230static void qlt_release(struct qla_tgt *tgt)
2d70c103 1231{
0e8cd71c 1232 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1233
0e8cd71c 1234 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1235 qlt_stop_phase2(tgt);
1236
0e8cd71c 1237 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1238
0e8cd71c 1239 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1240 "Release of tgt %p finished\n", tgt);
1241
1242 kfree(tgt);
1243}
1244
1245/* ha->hardware_lock supposed to be held on entry */
1246static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1247 const void *param, unsigned int param_size)
1248{
1249 struct qla_tgt_sess_work_param *prm;
1250 unsigned long flags;
1251
1252 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1253 if (!prm) {
1254 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1255 "qla_target(%d): Unable to create session "
1256 "work, command will be refused", 0);
1257 return -ENOMEM;
1258 }
1259
1260 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1261 "Scheduling work (type %d, prm %p)"
1262 " to find session for param %p (size %d, tgt %p)\n",
1263 type, prm, param, param_size, tgt);
1264
1265 prm->type = type;
1266 memcpy(&prm->tm_iocb, param, param_size);
1267
1268 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1269 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1270 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1271
1272 schedule_work(&tgt->sess_work);
1273
1274 return 0;
1275}
1276
1277/*
1278 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1279 */
1280static void qlt_send_notify_ack(struct scsi_qla_host *vha,
1281 struct imm_ntfy_from_isp *ntfy,
1282 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1283 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1284{
1285 struct qla_hw_data *ha = vha->hw;
1286 request_t *pkt;
1287 struct nack_to_isp *nack;
1288
1289 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1290
1291 /* Send marker if required */
1292 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1293 return;
1294
1295 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1296 if (!pkt) {
1297 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1298 "qla_target(%d): %s failed: unable to allocate "
1299 "request packet\n", vha->vp_idx, __func__);
1300 return;
1301 }
1302
0e8cd71c
SK		 1303 if (vha->vha_tgt.qla_tgt != NULL)
1304 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1305
1306 pkt->entry_type = NOTIFY_ACK_TYPE;
1307 pkt->entry_count = 1;
1308
1309 nack = (struct nack_to_isp *)pkt;
1310 nack->ox_id = ntfy->ox_id;
1311
1312 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1313 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1314 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1315 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1316 }
1317 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1318 nack->u.isp24.status = ntfy->u.isp24.status;
1319 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1320 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1321 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1322 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1323 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1324 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1325 nack->u.isp24.srr_reject_code = srr_reject_code;
1326 nack->u.isp24.srr_reject_code_expl = srr_explan;
1327 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1328
1329 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1330 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1331 vha->vp_idx, nack->u.isp24.status);
1332
63163e06
HM		 1333 /* Memory Barrier */
1334 wmb();
2d70c103
NB		 1335 qla2x00_start_iocbs(vha, vha->req);
1336}
1337
1338/*
1339 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1340 */
1341static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1342 struct abts_recv_from_24xx *abts, uint32_t status,
1343 bool ids_reversed)
1344{
1345 struct qla_hw_data *ha = vha->hw;
1346 struct abts_resp_to_24xx *resp;
1347 uint32_t f_ctl;
1348 uint8_t *p;
1349
1350 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1351 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1352 ha, abts, status);
1353
1354 /* Send marker if required */
1355 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1356 return;
1357
b6a029e1 1358 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1359 if (!resp) {
1360 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1361 "qla_target(%d): %s failed: unable to allocate "
1362 "request packet", vha->vp_idx, __func__);
1363 return;
1364 }
1365
1366 resp->entry_type = ABTS_RESP_24XX;
1367 resp->entry_count = 1;
1368 resp->nport_handle = abts->nport_handle;
1369 resp->vp_index = vha->vp_idx;
1370 resp->sof_type = abts->sof_type;
1371 resp->exchange_address = abts->exchange_address;
1372 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1373 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1374 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1375 F_CTL_SEQ_INITIATIVE);
1376 p = (uint8_t *)&f_ctl;
1377 resp->fcp_hdr_le.f_ctl[0] = *p++;
1378 resp->fcp_hdr_le.f_ctl[1] = *p++;
1379 resp->fcp_hdr_le.f_ctl[2] = *p;
1380 if (ids_reversed) {
1381 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1382 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1383 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1384 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1385 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1386 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1387 } else {
1388 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1389 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1390 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1391 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1392 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1393 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1394 }
1395 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1396 if (status == FCP_TMF_CMPL) {
1397 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1398 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1399 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1400 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1401 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1402 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1403 } else {
1404 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1405 resp->payload.ba_rjt.reason_code =
1406 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1407 /* Other bytes are zero */
1408 }
1409
0e8cd71c 1410 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1411
63163e06
HM		 1412 /* Memory Barrier */
1413 wmb();
2d70c103
NB		 1414 qla2x00_start_iocbs(vha, vha->req);
1415}
1416
1417/*
1418 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1419 */
1420static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1421 struct abts_resp_from_24xx_fw *entry)
1422{
1423 struct ctio7_to_24xx *ctio;
1424
1425 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1426 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1427 /* Send marker if required */
1428 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1429 return;
1430
b6a029e1 1431 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1432 if (ctio == NULL) {
1433 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1434 "qla_target(%d): %s failed: unable to allocate "
1435 "request packet\n", vha->vp_idx, __func__);
1436 return;
1437 }
1438
1439 /*
1440 * We've got on entrance firmware's response on by us generated
1441 * ABTS response. So, in it ID fields are reversed.
1442 */
1443
1444 ctio->entry_type = CTIO_TYPE7;
1445 ctio->entry_count = 1;
1446 ctio->nport_handle = entry->nport_handle;
1447 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1448 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1449 ctio->vp_index = vha->vp_idx;
1450 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1451 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1452 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1453 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1454 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1455 CTIO7_FLAGS_TERMINATE);
33a5fcee 1456 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1457
63163e06
HM		 1458 /* Memory Barrier */
1459 wmb();
2d70c103
NB		 1460 qla2x00_start_iocbs(vha, vha->req);
1461
1462 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1463 FCP_TMF_CMPL, true);
1464}
1465
8b2f5ff3
SN		 1466static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1467{
1468 struct qla_tgt_sess_op *op;
1469 struct qla_tgt_cmd *cmd;
1470
1471 spin_lock(&vha->cmd_list_lock);
1472
1473 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1474 if (tag == op->atio.u.isp24.exchange_addr) {
1475 op->aborted = true;
1476 spin_unlock(&vha->cmd_list_lock);
1477 return 1;
1478 }
1479 }
1480
1481 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1482 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1483 cmd->aborted = 1;
8b2f5ff3
SN		 1484 spin_unlock(&vha->cmd_list_lock);
1485 return 1;
1486 }
1487 }
1488
1489 spin_unlock(&vha->cmd_list_lock);
1490 return 0;
1491}
1492
1493/* drop cmds for the given lun
1494 * XXX only looks for cmds on the port through which lun reset was recieved
1495 * XXX does not go through the list of other port (which may have cmds
1496 * for the same lun)
1497 */
1498static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1499 uint32_t lun, uint8_t *s_id)
1500{
1501 struct qla_tgt_sess_op *op;
1502 struct qla_tgt_cmd *cmd;
1503 uint32_t key;
1504
1505 key = sid_to_key(s_id);
1506 spin_lock(&vha->cmd_list_lock);
1507 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1508 uint32_t op_key;
1509 uint32_t op_lun;
1510
1511 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1512 op_lun = scsilun_to_int(
1513 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1514 if (op_key == key && op_lun == lun)
1515 op->aborted = true;
1516 }
1517 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1518 uint32_t cmd_key;
1519 uint32_t cmd_lun;
1520
1521 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1522 cmd_lun = scsilun_to_int(
1523 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1524 if (cmd_key == key && cmd_lun == lun)
193b50b9 1525 cmd->aborted = 1;
8b2f5ff3
SN		 1526 }
1527 spin_unlock(&vha->cmd_list_lock);
1528}
1529
2d70c103
NB		 1530/* ha->hardware_lock supposed to be held on entry */
1531static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1532 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1533{
1534 struct qla_hw_data *ha = vha->hw;
06e97b48 1535 struct se_session *se_sess = sess->se_sess;
2d70c103 1536 struct qla_tgt_mgmt_cmd *mcmd;
06e97b48
SH		 1537 struct se_cmd *se_cmd;
1538 u32 lun = 0;
2d70c103 1539 int rc;
06e97b48
SH		 1540 bool found_lun = false;
1541
1542 spin_lock(&se_sess->sess_cmd_lock);
1543 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1544 struct qla_tgt_cmd *cmd =
1545 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
649ee054 1546 if (se_cmd->tag == abts->exchange_addr_to_abort) {
06e97b48
SH		 1547 lun = cmd->unpacked_lun;
1548 found_lun = true;
1549 break;
1550 }
1551 }
1552 spin_unlock(&se_sess->sess_cmd_lock);
1553
8b2f5ff3
SN		 1554 /* cmd not in LIO lists, look in qla list */
1555 if (!found_lun) {
1556 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1557 /* send TASK_ABORT response immediately */
1558 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
1559 return 0;
1560 } else {
1561 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
1562 "unable to find cmd in driver or LIO for tag 0x%x\n",
1563 abts->exchange_addr_to_abort);
1564 return -ENOENT;
1565 }
1566 }
2d70c103
NB		 1567
1568 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1569 "qla_target(%d): task abort (tag=%d)\n",
1570 vha->vp_idx, abts->exchange_addr_to_abort);
1571
1572 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1573 if (mcmd == NULL) {
1574 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1575 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1576 vha->vp_idx, __func__);
1577 return -ENOMEM;
1578 }
1579 memset(mcmd, 0, sizeof(*mcmd));
1580
1581 mcmd->sess = sess;
1582 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
80187f8e 1583 mcmd->reset_count = vha->hw->chip_reset;
2d70c103 1584
06e97b48 1585 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
2d70c103
NB		 1586 abts->exchange_addr_to_abort);
1587 if (rc != 0) {
1588 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1589 "qla_target(%d): tgt_ops->handle_tmr()"
1590 " failed: %d", vha->vp_idx, rc);
1591 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1592 return -EFAULT;
1593 }
1594
1595 return 0;
1596}
1597
1598/*
1599 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1600 */
1601static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1602 struct abts_recv_from_24xx *abts)
1603{
1604 struct qla_hw_data *ha = vha->hw;
1605 struct qla_tgt_sess *sess;
1606 uint32_t tag = abts->exchange_addr_to_abort;
1607 uint8_t s_id[3];
1608 int rc;
7560151b 1609 unsigned long flags;
2d70c103
NB		 1610
1611 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1612 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1613 "qla_target(%d): ABTS: Abort Sequence not "
1614 "supported\n", vha->vp_idx);
1615 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1616 return;
1617 }
1618
1619 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1620 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1621 "qla_target(%d): ABTS: Unknown Exchange "
1622 "Address received\n", vha->vp_idx);
1623 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1624 return;
1625 }
1626
1627 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1628 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1629 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1630 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1631 le32_to_cpu(abts->fcp_hdr_le.parameter));
1632
1633 s_id[0] = abts->fcp_hdr_le.s_id[2];
1634 s_id[1] = abts->fcp_hdr_le.s_id[1];
1635 s_id[2] = abts->fcp_hdr_le.s_id[0];
1636
7560151b 1637 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1638 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1639 if (!sess) {
1640 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1641 "qla_target(%d): task abort for non-existant session\n",
1642 vha->vp_idx);
0e8cd71c 1643 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103 1644 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
7560151b
QT		 1645
1646 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1647
2d70c103
NB		 1648 if (rc != 0) {
1649 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1650 false);
1651 }
1652 return;
1653 }
7560151b
QT		 1654 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1655
2d70c103 1656
e52a8b45
AP		 1657 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1658 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1659 return;
1660 }
1661
2d70c103
NB		 1662 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1663 if (rc != 0) {
1664 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1665 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1666 vha->vp_idx, rc);
1667 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1668 return;
1669 }
1670}
1671
1672/*
1673 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1674 */
1675static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1676 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1677{
1678 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1679 struct ctio7_to_24xx *ctio;
33a5fcee 1680 uint16_t temp;
2d70c103
NB		 1681
1682 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1683 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1684 ha, atio, resp_code);
1685
1686 /* Send marker if required */
1687 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1688 return;
1689
1690 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1691 if (ctio == NULL) {
1692 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1693 "qla_target(%d): %s failed: unable to allocate "
1694 "request packet\n", ha->vp_idx, __func__);
1695 return;
1696 }
1697
1698 ctio->entry_type = CTIO_TYPE7;
1699 ctio->entry_count = 1;
1700 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1701 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 1702 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1703 ctio->vp_index = ha->vp_idx;
1704 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1705 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1706 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1707 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1708 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 1709 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
33a5fcee
QT		 1710 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1711 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 1712 ctio->u.status1.scsi_status =
ad950360
BVA		 1713 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1714 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 1715 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 1716
63163e06
HM		 1717 /* Memory Barrier */
1718 wmb();
2d70c103
NB		 1719 qla2x00_start_iocbs(ha, ha->req);
1720}
1721
1722void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1723{
1724 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1725}
1726EXPORT_SYMBOL(qlt_free_mcmd);
1727
1728/* callback from target fabric module code */
1729void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1730{
1731 struct scsi_qla_host *vha = mcmd->sess->vha;
1732 struct qla_hw_data *ha = vha->hw;
1733 unsigned long flags;
1734
1735 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1736 "TM response mcmd (%p) status %#x state %#x",
1737 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1738
1739 spin_lock_irqsave(&ha->hardware_lock, flags);
b6a029e1
AE		 1740
1741 if (qla2x00_reset_active(vha) || mcmd->reset_count != ha->chip_reset) {
1742 /*
1743 * Either a chip reset is active or this request was from
1744 * previous life, just abort the processing.
1745 */
1746 ql_dbg(ql_dbg_async, vha, 0xe100,
1747 "RESET-TMR active/old-count/new-count = %d/%d/%d.\n",
1748 qla2x00_reset_active(vha), mcmd->reset_count,
1749 ha->chip_reset);
1750 ha->tgt.tgt_ops->free_mcmd(mcmd);
1751 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1752 return;
1753 }
1754
2d70c103
NB		 1755 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1756 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1757 0, 0, 0, 0, 0, 0);
1758 else {
1759 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
1760 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1761 mcmd->fc_tm_rsp, false);
1762 else
1763 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1764 mcmd->fc_tm_rsp);
1765 }
1766 /*
1767 * Make the callback for ->free_mcmd() to queue_work() and invoke
1768 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1769 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1770 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1771 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1772 * qlt_xmit_tm_rsp() returns here..
1773 */
1774 ha->tgt.tgt_ops->free_mcmd(mcmd);
1775 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1776}
1777EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1778
1779/* No locks */
1780static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1781{
1782 struct qla_tgt_cmd *cmd = prm->cmd;
1783
1784 BUG_ON(cmd->sg_cnt == 0);
1785
1786 prm->sg = (struct scatterlist *)cmd->sg;
1787 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1788 cmd->sg_cnt, cmd->dma_data_direction);
1789 if (unlikely(prm->seg_cnt == 0))
1790 goto out_err;
1791
1792 prm->cmd->sg_mapped = 1;
1793
f83adb61
QT		 1794 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1795 /*
1796 * If greater than four sg entries then we need to allocate
1797 * the continuation entries
1798 */
1799 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1800 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1801 prm->tgt->datasegs_per_cmd,
1802 prm->tgt->datasegs_per_cont);
1803 } else {
1804 /* DIF */
1805 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1806 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1807 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1808 prm->tot_dsds = prm->seg_cnt;
1809 } else
1810 prm->tot_dsds = prm->seg_cnt;
1811
1812 if (cmd->prot_sg_cnt) {
1813 prm->prot_sg = cmd->prot_sg;
1814 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1815 cmd->prot_sg, cmd->prot_sg_cnt,
1816 cmd->dma_data_direction);
1817 if (unlikely(prm->prot_seg_cnt == 0))
1818 goto out_err;
1819
1820 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1821 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1822 /* Dif Bundling not support here */
1823 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1824 cmd->blk_sz);
1825 prm->tot_dsds += prm->prot_seg_cnt;
1826 } else
1827 prm->tot_dsds += prm->prot_seg_cnt;
1828 }
1829 }
2d70c103 1830
2d70c103
NB		 1831 return 0;
1832
1833out_err:
1834 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1835 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1836 0, prm->cmd->sg_cnt);
1837 return -1;
1838}
1839
f9b6721a 1840static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103
NB		 1841{
1842 struct qla_hw_data *ha = vha->hw;
1843
f9b6721a
JE		 1844 if (!cmd->sg_mapped)
1845 return;
1846
2d70c103
NB		 1847 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1848 cmd->sg_mapped = 0;
f83adb61
QT		 1849
1850 if (cmd->prot_sg_cnt)
1851 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1852 cmd->dma_data_direction);
1853
1854 if (cmd->ctx_dsd_alloced)
1855 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1856
1857 if (cmd->ctx)
1858 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 1859}
1860
1861static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1862 uint32_t req_cnt)
1863{
d29fb736 1864 uint32_t cnt, cnt_in;
2d70c103
NB		 1865
1866 if (vha->req->cnt < (req_cnt + 2)) {
75554b68 1867 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
d29fb736 1868 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
2d70c103 1869
2d70c103
NB		 1870 if (vha->req->ring_index < cnt)
1871 vha->req->cnt = cnt - vha->req->ring_index;
1872 else
1873 vha->req->cnt = vha->req->length -
1874 (vha->req->ring_index - cnt);
1875 }
1876
1877 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
667024a3 1878 ql_dbg(ql_dbg_io, vha, 0x305a,
d29fb736
SK		 1879 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n",
1880 vha->vp_idx, vha->req->ring_index,
1881 vha->req->cnt, req_cnt, cnt, cnt_in, vha->req->length);
2d70c103
NB		 1882 return -EAGAIN;
1883 }
1884 vha->req->cnt -= req_cnt;
1885
1886 return 0;
1887}
1888
1889/*
1890 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1891 */
1892static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1893{
1894 /* Adjust ring index. */
1895 vha->req->ring_index++;
1896 if (vha->req->ring_index == vha->req->length) {
1897 vha->req->ring_index = 0;
1898 vha->req->ring_ptr = vha->req->ring;
1899 } else {
1900 vha->req->ring_ptr++;
1901 }
1902 return (cont_entry_t *)vha->req->ring_ptr;
1903}
1904
1905/* ha->hardware_lock supposed to be held on entry */
1906static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1907{
1908 struct qla_hw_data *ha = vha->hw;
1909 uint32_t h;
1910
1911 h = ha->tgt.current_handle;
1912 /* always increment cmd handle */
1913 do {
1914 ++h;
8d93f550 1915 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 1916 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1917 if (h == ha->tgt.current_handle) {
667024a3 1918 ql_dbg(ql_dbg_io, vha, 0x305b,
2d70c103
NB		 1919 "qla_target(%d): Ran out of "
1920 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1921 h = QLA_TGT_NULL_HANDLE;
1922 break;
1923 }
1924 } while ((h == QLA_TGT_NULL_HANDLE) ||
1925 (h == QLA_TGT_SKIP_HANDLE) ||
1926 (ha->tgt.cmds[h-1] != NULL));
1927
1928 if (h != QLA_TGT_NULL_HANDLE)
1929 ha->tgt.current_handle = h;
1930
1931 return h;
1932}
1933
1934/* ha->hardware_lock supposed to be held on entry */
1935static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1936 struct scsi_qla_host *vha)
1937{
1938 uint32_t h;
1939 struct ctio7_to_24xx *pkt;
1940 struct qla_hw_data *ha = vha->hw;
1941 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 1942 uint16_t temp;
2d70c103
NB		 1943
1944 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1945 prm->pkt = pkt;
1946 memset(pkt, 0, sizeof(*pkt));
1947
1948 pkt->entry_type = CTIO_TYPE7;
1949 pkt->entry_count = (uint8_t)prm->req_cnt;
1950 pkt->vp_index = vha->vp_idx;
1951
1952 h = qlt_make_handle(vha);
1953 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1954 /*
1955 * CTIO type 7 from the firmware doesn't provide a way to
1956 * know the initiator's LOOP ID, hence we can't find
1957 * the session and, so, the command.
1958 */
1959 return -EAGAIN;
1960 } else
1961 ha->tgt.cmds[h-1] = prm->cmd;
1962
1963 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1964 pkt->nport_handle = prm->cmd->loop_id;
ad950360 1965 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1966 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1967 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1968 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1969 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1970 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
33a5fcee
QT		 1971 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1972 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 1973 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1974
2d70c103
NB		 1975 return 0;
1976}
1977
1978/*
1979 * ha->hardware_lock supposed to be held on entry. We have already made sure
1980 * that there is sufficient amount of request entries to not drop it.
1981 */
1982static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1983 struct scsi_qla_host *vha)
1984{
1985 int cnt;
1986 uint32_t *dword_ptr;
1987 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1988
1989 /* Build continuation packets */
1990 while (prm->seg_cnt > 0) {
1991 cont_a64_entry_t *cont_pkt64 =
1992 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1993
1994 /*
1995 * Make sure that from cont_pkt64 none of
1996 * 64-bit specific fields used for 32-bit
1997 * addressing. Cast to (cont_entry_t *) for
1998 * that.
1999 */
2000
2001 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2002
2003 cont_pkt64->entry_count = 1;
2004 cont_pkt64->sys_define = 0;
2005
2006 if (enable_64bit_addressing) {
2007 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2008 dword_ptr =
2009 (uint32_t *)&cont_pkt64->dseg_0_address;
2010 } else {
2011 cont_pkt64->entry_type = CONTINUE_TYPE;
2012 dword_ptr =
2013 (uint32_t *)&((cont_entry_t *)
2014 cont_pkt64)->dseg_0_address;
2015 }
2016
2017 /* Load continuation entry data segments */
2018 for (cnt = 0;
2019 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
2020 cnt++, prm->seg_cnt--) {
2021 *dword_ptr++ =
2022 cpu_to_le32(pci_dma_lo32
2023 (sg_dma_address(prm->sg)));
2024 if (enable_64bit_addressing) {
2025 *dword_ptr++ =
2026 cpu_to_le32(pci_dma_hi32
2027 (sg_dma_address
2028 (prm->sg)));
2029 }
2030 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2031
2d70c103
NB		 2032 prm->sg = sg_next(prm->sg);
2033 }
2034 }
2035}
2036
2037/*
2038 * ha->hardware_lock supposed to be held on entry. We have already made sure
2039 * that there is sufficient amount of request entries to not drop it.
2040 */
2041static void qlt_load_data_segments(struct qla_tgt_prm *prm,
2042 struct scsi_qla_host *vha)
2043{
2044 int cnt;
2045 uint32_t *dword_ptr;
2046 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2047 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2048
2d70c103
NB		 2049 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2050
2051 /* Setup packet address segment pointer */
2052 dword_ptr = pkt24->u.status0.dseg_0_address;
2053
2054 /* Set total data segment count */
2055 if (prm->seg_cnt)
2056 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2057
2058 if (prm->seg_cnt == 0) {
2059 /* No data transfer */
2060 *dword_ptr++ = 0;
2061 *dword_ptr = 0;
2062 return;
2063 }
2064
2065 /* If scatter gather */
2d70c103
NB		 2066
2067 /* Load command entry data segments */
2068 for (cnt = 0;
2069 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
2070 cnt++, prm->seg_cnt--) {
2071 *dword_ptr++ =
2072 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2073 if (enable_64bit_addressing) {
2074 *dword_ptr++ =
2075 cpu_to_le32(pci_dma_hi32(
2076 sg_dma_address(prm->sg)));
2077 }
2078 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2079
2d70c103
NB		 2080 prm->sg = sg_next(prm->sg);
2081 }
2082
2083 qlt_load_cont_data_segments(prm, vha);
2084}
2085
2086static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2087{
2088 return cmd->bufflen > 0;
2089}
2090
2091/*
2092 * Called without ha->hardware_lock held
2093 */
2094static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2095 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2096 uint32_t *full_req_cnt)
2097{
2098 struct qla_tgt *tgt = cmd->tgt;
2099 struct scsi_qla_host *vha = tgt->vha;
2100 struct qla_hw_data *ha = vha->hw;
2101 struct se_cmd *se_cmd = &cmd->se_cmd;
2102
2d70c103
NB		 2103 prm->cmd = cmd;
2104 prm->tgt = tgt;
2105 prm->rq_result = scsi_status;
2106 prm->sense_buffer = &cmd->sense_buffer[0];
2107 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2108 prm->sg = NULL;
2109 prm->seg_cnt = -1;
2110 prm->req_cnt = 1;
2111 prm->add_status_pkt = 0;
2112
2d70c103
NB		 2113 /* Send marker if required */
2114 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2115 return -EFAULT;
2116
2d70c103
NB		 2117 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2118 if (qlt_pci_map_calc_cnt(prm) != 0)
2119 return -EAGAIN;
2120 }
2121
2122 *full_req_cnt = prm->req_cnt;
2123
2124 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2125 prm->residual = se_cmd->residual_count;
667024a3 2126 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
649ee054
BVA		 2127 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2128 prm->residual, se_cmd->tag,
2129 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2130 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2131 prm->rq_result |= SS_RESIDUAL_UNDER;
2132 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2133 prm->residual = se_cmd->residual_count;
667024a3 2134 ql_dbg(ql_dbg_io, vha, 0x305d,
649ee054
BVA		 2135 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2136 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2137 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2138 prm->rq_result |= SS_RESIDUAL_OVER;
2139 }
2140
2141 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2142 /*
2143 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2144 * ignored in *xmit_response() below
2145 */
2146 if (qlt_has_data(cmd)) {
2147 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2148 (IS_FWI2_CAPABLE(ha) &&
2149 (prm->rq_result != 0))) {
2150 prm->add_status_pkt = 1;
2151 (*full_req_cnt)++;
2152 }
2153 }
2154 }
2155
2d70c103
NB		 2156 return 0;
2157}
2158
2159static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
2160 struct qla_tgt_cmd *cmd, int sending_sense)
2161{
2162 if (ha->tgt.enable_class_2)
2163 return 0;
2164
2165 if (sending_sense)
2166 return cmd->conf_compl_supported;
2167 else
2168 return ha->tgt.enable_explicit_conf &&
2169 cmd->conf_compl_supported;
2170}
2171
2172#ifdef CONFIG_QLA_TGT_DEBUG_SRR
2173/*
2174 * Original taken from the XFS code
2175 */
2176static unsigned long qlt_srr_random(void)
2177{
2178 static int Inited;
2179 static unsigned long RandomValue;
2180 static DEFINE_SPINLOCK(lock);
2181 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
2182 register long rv;
2183 register long lo;
2184 register long hi;
2185 unsigned long flags;
2186
2187 spin_lock_irqsave(&lock, flags);
2188 if (!Inited) {
2189 RandomValue = jiffies;
2190 Inited = 1;
2191 }
2192 rv = RandomValue;
2193 hi = rv / 127773;
2194 lo = rv % 127773;
2195 rv = 16807 * lo - 2836 * hi;
2196 if (rv <= 0)
2197 rv += 2147483647;
2198 RandomValue = rv;
2199 spin_unlock_irqrestore(&lock, flags);
2200 return rv;
2201}
2202
2203static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
2204{
2205#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
2206 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
2207 == 50) {
2208 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
2209 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
649ee054 2210 "Dropping cmd %p (tag %d) status", cmd, se_cmd->tag);
2d70c103
NB		 2211 }
2212#endif
2213 /*
2214 * It's currently not possible to simulate SRRs for FCP_WRITE without
2215 * a physical link layer failure, so don't even try here..
2216 */
2217 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
2218 return;
2219
2220 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
2221 ((qlt_srr_random() % 100) == 20)) {
2222 int i, leave = 0;
2223 unsigned int tot_len = 0;
2224
2225 while (leave == 0)
2226 leave = qlt_srr_random() % cmd->sg_cnt;
2227
2228 for (i = 0; i < leave; i++)
2229 tot_len += cmd->sg[i].length;
2230
2231 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
2232 "Cutting cmd %p (tag %d) buffer"
2233 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
649ee054 2234 " cmd->sg_cnt %d)", cmd, se_cmd->tag, tot_len, leave,
2d70c103
NB		 2235 cmd->bufflen, cmd->sg_cnt);
2236
2237 cmd->bufflen = tot_len;
2238 cmd->sg_cnt = leave;
2239 }
2240
2241 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
2242 unsigned int offset = qlt_srr_random() % cmd->bufflen;
2243
2244 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
2245 "Cutting cmd %p (tag %d) buffer head "
649ee054 2246 "to offset %d (cmd->bufflen %d)", cmd, se_cmd->tag, offset,
2d70c103
NB		 2247 cmd->bufflen);
2248 if (offset == 0)
2249 *xmit_type &= ~QLA_TGT_XMIT_DATA;
2250 else if (qlt_set_data_offset(cmd, offset)) {
2251 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
649ee054 2252 "qlt_set_data_offset() failed (tag %d)", se_cmd->tag);
2d70c103
NB		 2253 }
2254 }
2255}
2256#else
2257static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
2258{}
2259#endif
2260
2261static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2262 struct qla_tgt_prm *prm)
2263{
2264 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2265 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2266 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2d70c103 2267 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
ad950360 2268 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2269 CTIO7_FLAGS_EXPLICIT_CONFORM |
2270 CTIO7_FLAGS_CONFORM_REQ);
2271 }
2272 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2273 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2274 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2275 int i;
2276
2277 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
2278 if (prm->cmd->se_cmd.scsi_status != 0) {
2279 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
2280 "Skipping EXPLICIT_CONFORM and "
2281 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2282 "non GOOD status\n");
2283 goto skip_explict_conf;
2284 }
ad950360 2285 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2286 CTIO7_FLAGS_EXPLICIT_CONFORM |
2287 CTIO7_FLAGS_CONFORM_REQ);
2288 }
2289skip_explict_conf:
2290 ctio->u.status1.flags &=
ad950360 2291 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2292 ctio->u.status1.flags |=
ad950360 2293 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2294 ctio->u.status1.scsi_status |=
ad950360 2295 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2296 ctio->u.status1.sense_length =
2297 cpu_to_le16(prm->sense_buffer_len);
2298 for (i = 0; i < prm->sense_buffer_len/4; i++)
2299 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2300 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2301#if 0
2302 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
2303 static int q;
2304 if (q < 10) {
2305 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
2306 "qla_target(%d): %d bytes of sense "
2307 "lost", prm->tgt->ha->vp_idx,
2308 prm->sense_buffer_len % 4);
2309 q++;
2310 }
2311 }
2312#endif
2313 } else {
2314 ctio->u.status1.flags &=
ad950360 2315 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2316 ctio->u.status1.flags |=
ad950360 2317 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2318 ctio->u.status1.sense_length = 0;
2319 memset(ctio->u.status1.sense_data, 0,
2320 sizeof(ctio->u.status1.sense_data));
2321 }
2322
2323 /* Sense with len > 24, is it possible ??? */
2324}
2325
f83adb61
QT		 2326
2327
2328/* diff */
2329static inline int
2330qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2331{
2332 /*
2333 * Uncomment when corresponding SCSI changes are done.
2334 *
2335 if (!sp->cmd->prot_chk)
2336 return 0;
2337 *
2338 */
2339 switch (se_cmd->prot_op) {
2340 case TARGET_PROT_DOUT_INSERT:
2341 case TARGET_PROT_DIN_STRIP:
2342 if (ql2xenablehba_err_chk >= 1)
2343 return 1;
2344 break;
2345 case TARGET_PROT_DOUT_PASS:
2346 case TARGET_PROT_DIN_PASS:
2347 if (ql2xenablehba_err_chk >= 2)
2348 return 1;
2349 break;
2350 case TARGET_PROT_DIN_INSERT:
2351 case TARGET_PROT_DOUT_STRIP:
2352 return 1;
2353 default:
2354 break;
2355 }
2356 return 0;
2357}
2358
2359/*
2360 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
2361 *
2362 */
2363static inline void
2364qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
2365{
2366 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2367
2368 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
2369 * have been immplemented by TCM, before AppTag is avail.
2370 * Look for modesense_handlers[]
2371 */
c7ee3bd4 2372 ctx->app_tag = 0;
f83adb61
QT		 2373 ctx->app_tag_mask[0] = 0x0;
2374 ctx->app_tag_mask[1] = 0x0;
2375
2376 switch (se_cmd->prot_type) {
2377 case TARGET_DIF_TYPE0_PROT:
2378 /*
2379 * No check for ql2xenablehba_err_chk, as it would be an
2380 * I/O error if hba tag generation is not done.
2381 */
2382 ctx->ref_tag = cpu_to_le32(lba);
2383
2384 if (!qlt_hba_err_chk_enabled(se_cmd))
2385 break;
2386
2387 /* enable ALL bytes of the ref tag */
2388 ctx->ref_tag_mask[0] = 0xff;
2389 ctx->ref_tag_mask[1] = 0xff;
2390 ctx->ref_tag_mask[2] = 0xff;
2391 ctx->ref_tag_mask[3] = 0xff;
2392 break;
2393 /*
2394 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2395 * 16 bit app tag.
2396 */
2397 case TARGET_DIF_TYPE1_PROT:
2398 ctx->ref_tag = cpu_to_le32(lba);
2399
2400 if (!qlt_hba_err_chk_enabled(se_cmd))
2401 break;
2402
2403 /* enable ALL bytes of the ref tag */
2404 ctx->ref_tag_mask[0] = 0xff;
2405 ctx->ref_tag_mask[1] = 0xff;
2406 ctx->ref_tag_mask[2] = 0xff;
2407 ctx->ref_tag_mask[3] = 0xff;
2408 break;
2409 /*
2410 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2411 * match LBA in CDB + N
2412 */
2413 case TARGET_DIF_TYPE2_PROT:
2414 ctx->ref_tag = cpu_to_le32(lba);
2415
2416 if (!qlt_hba_err_chk_enabled(se_cmd))
2417 break;
2418
2419 /* enable ALL bytes of the ref tag */
2420 ctx->ref_tag_mask[0] = 0xff;
2421 ctx->ref_tag_mask[1] = 0xff;
2422 ctx->ref_tag_mask[2] = 0xff;
2423 ctx->ref_tag_mask[3] = 0xff;
2424 break;
2425
2426 /* For Type 3 protection: 16 bit GUARD only */
2427 case TARGET_DIF_TYPE3_PROT:
2428 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2429 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2430 break;
2431 }
2432}
2433
2434
2435static inline int
2436qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2437{
2438 uint32_t *cur_dsd;
f83adb61
QT		 2439 uint32_t transfer_length = 0;
2440 uint32_t data_bytes;
2441 uint32_t dif_bytes;
2442 uint8_t bundling = 1;
2443 uint8_t *clr_ptr;
2444 struct crc_context *crc_ctx_pkt = NULL;
2445 struct qla_hw_data *ha;
2446 struct ctio_crc2_to_fw *pkt;
2447 dma_addr_t crc_ctx_dma;
2448 uint16_t fw_prot_opts = 0;
2449 struct qla_tgt_cmd *cmd = prm->cmd;
2450 struct se_cmd *se_cmd = &cmd->se_cmd;
2451 uint32_t h;
2452 struct atio_from_isp *atio = &prm->cmd->atio;
c7ee3bd4 2453 uint16_t t16;
f83adb61 2454
f83adb61
QT		 2455 ha = vha->hw;
2456
2457 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2458 prm->pkt = pkt;
2459 memset(pkt, 0, sizeof(*pkt));
2460
2461 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2462 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2463 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2464 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2465
2466 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2467 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2468 bundling = 0;
2469
2470 /* Compute dif len and adjust data len to incude protection */
2471 data_bytes = cmd->bufflen;
2472 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2473
2474 switch (se_cmd->prot_op) {
2475 case TARGET_PROT_DIN_INSERT:
2476 case TARGET_PROT_DOUT_STRIP:
2477 transfer_length = data_bytes;
2478 data_bytes += dif_bytes;
2479 break;
2480
2481 case TARGET_PROT_DIN_STRIP:
2482 case TARGET_PROT_DOUT_INSERT:
2483 case TARGET_PROT_DIN_PASS:
2484 case TARGET_PROT_DOUT_PASS:
2485 transfer_length = data_bytes + dif_bytes;
2486 break;
2487
2488 default:
2489 BUG();
2490 break;
2491 }
2492
2493 if (!qlt_hba_err_chk_enabled(se_cmd))
2494 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2495 /* HBA error checking enabled */
2496 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2497 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2498 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2499 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2500 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2501 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2502 }
2503
2504 switch (se_cmd->prot_op) {
2505 case TARGET_PROT_DIN_INSERT:
2506 case TARGET_PROT_DOUT_INSERT:
2507 fw_prot_opts |= PO_MODE_DIF_INSERT;
2508 break;
2509 case TARGET_PROT_DIN_STRIP:
2510 case TARGET_PROT_DOUT_STRIP:
2511 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2512 break;
2513 case TARGET_PROT_DIN_PASS:
2514 case TARGET_PROT_DOUT_PASS:
2515 fw_prot_opts |= PO_MODE_DIF_PASS;
2516 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2517 break;
2518 default:/* Normal Request */
2519 fw_prot_opts |= PO_MODE_DIF_PASS;
2520 break;
2521 }
2522
2523
2524 /* ---- PKT ---- */
2525 /* Update entry type to indicate Command Type CRC_2 IOCB */
2526 pkt->entry_type = CTIO_CRC2;
2527 pkt->entry_count = 1;
2528 pkt->vp_index = vha->vp_idx;
2529
2530 h = qlt_make_handle(vha);
2531 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2532 /*
2533 * CTIO type 7 from the firmware doesn't provide a way to
2534 * know the initiator's LOOP ID, hence we can't find
2535 * the session and, so, the command.
2536 */
2537 return -EAGAIN;
2538 } else
2539 ha->tgt.cmds[h-1] = prm->cmd;
2540
2541
2542 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2543 pkt->nport_handle = prm->cmd->loop_id;
ad950360 2544 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2545 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2546 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2547 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2548 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2549
2550 /* silence compile warning */
2551 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2552 pkt->ox_id = cpu_to_le16(t16);
2553
2554 t16 = (atio->u.isp24.attr << 9);
2555 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2556 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2557
2558 /* Set transfer direction */
2559 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2560 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2561 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2562 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61
QT		 2563
2564
2565 pkt->dseg_count = prm->tot_dsds;
2566 /* Fibre channel byte count */
2567 pkt->transfer_length = cpu_to_le32(transfer_length);
2568
2569
2570 /* ----- CRC context -------- */
2571
2572 /* Allocate CRC context from global pool */
2573 crc_ctx_pkt = cmd->ctx =
2574 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2575
2576 if (!crc_ctx_pkt)
2577 goto crc_queuing_error;
2578
2579 /* Zero out CTX area. */
2580 clr_ptr = (uint8_t *)crc_ctx_pkt;
2581 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2582
2583 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2584 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2585
2586 /* Set handle */
2587 crc_ctx_pkt->handle = pkt->handle;
2588
2589 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2590
2591 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2592 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2593 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2594
2595
2596 if (!bundling) {
2597 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2598 } else {
2599 /*
2600 * Configure Bundling if we need to fetch interlaving
2601 * protection PCI accesses
2602 */
2603 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2604 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2605 crc_ctx_pkt->u.bundling.dseg_count =
2606 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2607 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2608 }
2609
2610 /* Finish the common fields of CRC pkt */
2611 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2612 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2613 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 2614 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61
QT		 2615
2616
2617 /* Walks data segments */
ad950360 2618 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 2619
2620 if (!bundling && prm->prot_seg_cnt) {
2621 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2622 prm->tot_dsds, cmd))
2623 goto crc_queuing_error;
2624 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2625 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2626 goto crc_queuing_error;
2627
2628 if (bundling && prm->prot_seg_cnt) {
2629 /* Walks dif segments */
c7ee3bd4 2630 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2631
2632 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2633 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2634 prm->prot_seg_cnt, cmd))
2635 goto crc_queuing_error;
2636 }
2637 return QLA_SUCCESS;
2638
2639crc_queuing_error:
2640 /* Cleanup will be performed by the caller */
2641
2642 return QLA_FUNCTION_FAILED;
2643}
2644
2645
2d70c103
NB		 2646/*
2647 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2648 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2649 */
2650int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2651 uint8_t scsi_status)
2652{
2653 struct scsi_qla_host *vha = cmd->vha;
2654 struct qla_hw_data *ha = vha->hw;
2655 struct ctio7_to_24xx *pkt;
2656 struct qla_tgt_prm prm;
2657 uint32_t full_req_cnt = 0;
2658 unsigned long flags = 0;
2659 int res;
2660
a6ca8878
AP		 2661 spin_lock_irqsave(&ha->hardware_lock, flags);
2662 if (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
2663 cmd->state = QLA_TGT_STATE_PROCESSED;
2664 if (cmd->sess->logout_completed)
2665 /* no need to terminate. FW already freed exchange. */
2666 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2667 else
2668 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
2669 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2670 return 0;
2671 }
2672 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2673
2d70c103
NB		 2674 memset(&prm, 0, sizeof(prm));
2675 qlt_check_srr_debug(cmd, &xmit_type);
2676
2677 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 2678 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2679 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2680 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2681 &cmd->se_cmd);
2d70c103
NB		 2682
2683 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2684 &full_req_cnt);
2685 if (unlikely(res != 0)) {
2d70c103
NB		 2686 return res;
2687 }
2688
2689 spin_lock_irqsave(&ha->hardware_lock, flags);
2690
ce1025cd
HM		 2691 if (xmit_type == QLA_TGT_XMIT_STATUS)
2692 vha->tgt_counters.core_qla_snd_status++;
2693 else
2694 vha->tgt_counters.core_qla_que_buf++;
2695
b6a029e1
AE		 2696 if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
2697 /*
2698 * Either a chip reset is active or this request was from
2699 * previous life, just abort the processing.
2700 */
2701 cmd->state = QLA_TGT_STATE_PROCESSED;
2702 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2703 ql_dbg(ql_dbg_async, vha, 0xe101,
2704 "RESET-RSP active/old-count/new-count = %d/%d/%d.\n",
2705 qla2x00_reset_active(vha), cmd->reset_count,
2706 ha->chip_reset);
2707 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2708 return 0;
2709 }
2710
2d70c103
NB		 2711 /* Does F/W have an IOCBs for this request */
2712 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2713 if (unlikely(res))
2714 goto out_unmap_unlock;
2715
f83adb61
QT		 2716 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2717 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2718 else
2719 res = qlt_24xx_build_ctio_pkt(&prm, vha);
810e30bc
QT		 2720 if (unlikely(res != 0)) {
2721 vha->req->cnt += full_req_cnt;
2d70c103 2722 goto out_unmap_unlock;
810e30bc 2723 }
2d70c103
NB		 2724
2725 pkt = (struct ctio7_to_24xx *)prm.pkt;
2726
2727 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2728 pkt->u.status0.flags |=
ad950360 2729 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 2730 CTIO7_FLAGS_STATUS_MODE_0);
2731
f83adb61
QT		 2732 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2733 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2734
2735 if (prm.add_status_pkt == 0) {
2736 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2737 pkt->u.status0.scsi_status =
2738 cpu_to_le16(prm.rq_result);
2739 pkt->u.status0.residual =
2740 cpu_to_le32(prm.residual);
ad950360 2741 pkt->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2742 CTIO7_FLAGS_SEND_STATUS);
2743 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2744 pkt->u.status0.flags |=
ad950360 2745 cpu_to_le16(
2d70c103
NB		 2746 CTIO7_FLAGS_EXPLICIT_CONFORM |
2747 CTIO7_FLAGS_CONFORM_REQ);
2748 }
2749 }
2750
2751 } else {
2752 /*
2753 * We have already made sure that there is sufficient
2754 * amount of request entries to not drop HW lock in
2755 * req_pkt().
2756 */
2757 struct ctio7_to_24xx *ctio =
2758 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2759
667024a3
AE		 2760 ql_dbg(ql_dbg_io, vha, 0x305e,
2761 "Building additional status packet 0x%p.\n",
2762 ctio);
2d70c103 2763
f83adb61
QT		 2764 /*
2765 * T10Dif: ctio_crc2_to_fw overlay ontop of
2766 * ctio7_to_24xx
2767 */
2d70c103 2768 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 2769 /* reset back to CTIO7 */
2d70c103 2770 ctio->entry_count = 1;
f83adb61 2771 ctio->entry_type = CTIO_TYPE7;
2d70c103 2772 ctio->dseg_count = 0;
ad950360 2773 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 2774 CTIO7_FLAGS_DATA_IN);
2775
2776 /* Real finish is ctio_m1's finish */
2777 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 2778 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 2779 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 2780
2781 /* qlt_24xx_init_ctio_to_isp will correct
2782 * all neccessary fields that's part of CTIO7.
2783 * There should be no residual of CTIO-CRC2 data.
2784 */
2d70c103
NB		 2785 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2786 &prm);
2787 pr_debug("Status CTIO7: %p\n", ctio);
2788 }
2789 } else
2790 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2791
2792
2793 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 2794 cmd->cmd_sent_to_fw = 1;
2d70c103 2795
63163e06
HM		 2796 /* Memory Barrier */
2797 wmb();
2d70c103
NB		 2798 qla2x00_start_iocbs(vha, vha->req);
2799 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2800
2801 return 0;
2802
2803out_unmap_unlock:
f9b6721a 2804 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2805 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2806
2807 return res;
2808}
2809EXPORT_SYMBOL(qlt_xmit_response);
2810
2811int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2812{
2813 struct ctio7_to_24xx *pkt;
2814 struct scsi_qla_host *vha = cmd->vha;
2815 struct qla_hw_data *ha = vha->hw;
2816 struct qla_tgt *tgt = cmd->tgt;
2817 struct qla_tgt_prm prm;
2818 unsigned long flags;
2819 int res = 0;
2820
2821 memset(&prm, 0, sizeof(prm));
2822 prm.cmd = cmd;
2823 prm.tgt = tgt;
2824 prm.sg = NULL;
2825 prm.req_cnt = 1;
2826
2827 /* Send marker if required */
2828 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2829 return -EIO;
2830
2d70c103
NB		 2831 /* Calculate number of entries and segments required */
2832 if (qlt_pci_map_calc_cnt(&prm) != 0)
2833 return -EAGAIN;
2834
2835 spin_lock_irqsave(&ha->hardware_lock, flags);
2836
a6ca8878
AP		 2837 if (qla2x00_reset_active(vha) || (cmd->reset_count != ha->chip_reset) ||
2838 (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)) {
b6a029e1
AE		 2839 /*
2840 * Either a chip reset is active or this request was from
2841 * previous life, just abort the processing.
2842 */
2843 cmd->state = QLA_TGT_STATE_NEED_DATA;
2844 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2845 ql_dbg(ql_dbg_async, vha, 0xe102,
2846 "RESET-XFR active/old-count/new-count = %d/%d/%d.\n",
2847 qla2x00_reset_active(vha), cmd->reset_count,
2848 ha->chip_reset);
2849 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2850 return 0;
2851 }
2852
2d70c103
NB		 2853 /* Does F/W have an IOCBs for this request */
2854 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2855 if (res != 0)
2856 goto out_unlock_free_unmap;
f83adb61
QT		 2857 if (cmd->se_cmd.prot_op)
2858 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2859 else
2860 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 2861
810e30bc
QT		 2862 if (unlikely(res != 0)) {
2863 vha->req->cnt += prm.req_cnt;
2d70c103 2864 goto out_unlock_free_unmap;
810e30bc
QT		 2865 }
2866
2d70c103 2867 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 2868 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 2869 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 2870
2871 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2872 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2873
2874 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 2875 cmd->cmd_sent_to_fw = 1;
2d70c103 2876
63163e06
HM		 2877 /* Memory Barrier */
2878 wmb();
2d70c103
NB		 2879 qla2x00_start_iocbs(vha, vha->req);
2880 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2881
2882 return res;
2883
2884out_unlock_free_unmap:
f9b6721a 2885 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2886 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2887
2888 return res;
2889}
2890EXPORT_SYMBOL(qlt_rdy_to_xfer);
2891
f83adb61
QT		 2892
2893/*
2894 * Checks the guard or meta-data for the type of error
2895 * detected by the HBA.
2896 */
2897static inline int
2898qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2899 struct ctio_crc_from_fw *sts)
2900{
2901 uint8_t *ap = &sts->actual_dif[0];
2902 uint8_t *ep = &sts->expected_dif[0];
2903 uint32_t e_ref_tag, a_ref_tag;
2904 uint16_t e_app_tag, a_app_tag;
2905 uint16_t e_guard, a_guard;
2906 uint64_t lba = cmd->se_cmd.t_task_lba;
2907
2908 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2909 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2910 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2911
2912 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2913 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2914 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2915
2916 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2917 "iocb(s) %p Returned STATUS.\n", sts);
2918
2919 ql_dbg(ql_dbg_tgt, vha, 0xf075,
fc385045 2920 "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		 2921 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2922 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2923
2924 /*
2925 * Ignore sector if:
2926 * For type 3: ref & app tag is all 'f's
2927 * For type 0,1,2: app tag is all 'f's
2928 */
2929 if ((a_app_tag == 0xffff) &&
2930 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2931 (a_ref_tag == 0xffffffff))) {
2932 uint32_t blocks_done;
2933
2934 /* 2TB boundary case covered automatically with this */
2935 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2936 cmd->se_cmd.bad_sector = e_ref_tag;
2937 cmd->se_cmd.pi_err = 0;
2938 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2939 "need to return scsi good\n");
2940
2941 /* Update protection tag */
2942 if (cmd->prot_sg_cnt) {
52c82823 2943 uint32_t i, k = 0, num_ent;
f83adb61
QT		 2944 struct scatterlist *sg, *sgl;
2945
2946
2947 sgl = cmd->prot_sg;
2948
2949 /* Patch the corresponding protection tags */
2950 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2951 num_ent = sg_dma_len(sg) / 8;
2952 if (k + num_ent < blocks_done) {
2953 k += num_ent;
2954 continue;
2955 }
f83adb61
QT		 2956 k = blocks_done;
2957 break;
2958 }
2959
2960 if (k != blocks_done) {
2961 ql_log(ql_log_warn, vha, 0xf076,
2962 "unexpected tag values tag:lba=%u:%llu)\n",
2963 e_ref_tag, (unsigned long long)lba);
2964 goto out;
2965 }
2966
2967#if 0
2968 struct sd_dif_tuple *spt;
2969 /* TODO:
2970 * This section came from initiator. Is it valid here?
2971 * should ulp be override with actual val???
2972 */
2973 spt = page_address(sg_page(sg)) + sg->offset;
2974 spt += j;
2975
2976 spt->app_tag = 0xffff;
2977 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2978 spt->ref_tag = 0xffffffff;
2979#endif
2980 }
2981
2982 return 0;
2983 }
2984
2985 /* check guard */
2986 if (e_guard != a_guard) {
2987 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2988 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2989
2990 ql_log(ql_log_warn, vha, 0xe076,
2991 "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",
2992 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2993 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2994 a_guard, e_guard, cmd);
2995 goto out;
2996 }
2997
2998 /* check ref tag */
2999 if (e_ref_tag != a_ref_tag) {
3000 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
3001 cmd->se_cmd.bad_sector = e_ref_tag;
3002
3003 ql_log(ql_log_warn, vha, 0xe077,
3004 "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",
3005 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3006 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3007 a_guard, e_guard, cmd);
3008 goto out;
3009 }
3010
3011 /* check appl tag */
3012 if (e_app_tag != a_app_tag) {
3013 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
3014 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
3015
3016 ql_log(ql_log_warn, vha, 0xe078,
3017 "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",
3018 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3019 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3020 a_guard, e_guard, cmd);
3021 goto out;
3022 }
3023out:
3024 return 1;
3025}
3026
3027
a6ca8878
AP		 3028/* If hardware_lock held on entry, might drop it, then reaquire */
3029/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3030static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3031 struct imm_ntfy_from_isp *ntfy)
3032{
3033 struct nack_to_isp *nack;
3034 struct qla_hw_data *ha = vha->hw;
3035 request_t *pkt;
3036 int ret = 0;
3037
3038 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3039 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3040
3041 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
3042 if (pkt == NULL) {
3043 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3044 "qla_target(%d): %s failed: unable to allocate "
3045 "request packet\n", vha->vp_idx, __func__);
3046 return -ENOMEM;
3047 }
3048
3049 pkt->entry_type = NOTIFY_ACK_TYPE;
3050 pkt->entry_count = 1;
3051 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3052
3053 nack = (struct nack_to_isp *)pkt;
3054 nack->ox_id = ntfy->ox_id;
3055
3056 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3057 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3058 nack->u.isp24.flags = ntfy->u.isp24.flags &
3059 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3060 }
3061
3062 /* terminate */
3063 nack->u.isp24.flags |=
3064 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3065
3066 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3067 nack->u.isp24.status = ntfy->u.isp24.status;
3068 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3069 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3070 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3071 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3072 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3073 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3074
3075 qla2x00_start_iocbs(vha, vha->req);
3076 return ret;
3077}
3078
3079static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3080 struct imm_ntfy_from_isp *imm, int ha_locked)
3081{
3082 unsigned long flags = 0;
3083 int rc;
3084
3085 if (qlt_issue_marker(vha, ha_locked) < 0)
3086 return;
3087
3088 if (ha_locked) {
3089 rc = __qlt_send_term_imm_notif(vha, imm);
3090
3091#if 0 /* Todo */
3092 if (rc == -ENOMEM)
3093 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3094#endif
3095 goto done;
3096 }
3097
3098 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3099 rc = __qlt_send_term_imm_notif(vha, imm);
3100
3101#if 0 /* Todo */
3102 if (rc == -ENOMEM)
3103 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3104#endif
3105
3106done:
3107 if (!ha_locked)
3108 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3109}
3110
2d70c103
NB		 3111/* If hardware_lock held on entry, might drop it, then reaquire */
3112/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3113static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
3114 struct qla_tgt_cmd *cmd,
3115 struct atio_from_isp *atio)
3116{
3117 struct ctio7_to_24xx *ctio24;
3118 struct qla_hw_data *ha = vha->hw;
3119 request_t *pkt;
3120 int ret = 0;
33a5fcee 3121 uint16_t temp;
2d70c103
NB		 3122
3123 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3124
b6a029e1 3125 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 3126 if (pkt == NULL) {
3127 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3128 "qla_target(%d): %s failed: unable to allocate "
3129 "request packet\n", vha->vp_idx, __func__);
3130 return -ENOMEM;
3131 }
3132
3133 if (cmd != NULL) {
3134 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3135 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3136 "qla_target(%d): Terminating cmd %p with "
3137 "incorrect state %d\n", vha->vp_idx, cmd,
3138 cmd->state);
3139 } else
3140 ret = 1;
3141 }
3142
ce1025cd 3143 vha->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3144 pkt->entry_count = 1;
3145 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3146
3147 ctio24 = (struct ctio7_to_24xx *)pkt;
3148 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3149 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3150 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3151 ctio24->vp_index = vha->vp_idx;
3152 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3153 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3154 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3155 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3156 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 3157 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2d70c103 3158 CTIO7_FLAGS_TERMINATE);
33a5fcee
QT		 3159 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3160 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3161
3162 /* Most likely, it isn't needed */
3163 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3164 &atio->u.isp24.fcp_cmnd.add_cdb[
3165 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3166 if (ctio24->u.status1.residual != 0)
3167 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3168
63163e06
HM		 3169 /* Memory Barrier */
3170 wmb();
2d70c103
NB		 3171 qla2x00_start_iocbs(vha, vha->req);
3172 return ret;
3173}
3174
3175static void qlt_send_term_exchange(struct scsi_qla_host *vha,
3176 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
3177{
6bc85dd5 3178 unsigned long flags = 0;
2d70c103
NB		 3179 int rc;
3180
3181 if (qlt_issue_marker(vha, ha_locked) < 0)
3182 return;
3183
3184 if (ha_locked) {
3185 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3186 if (rc == -ENOMEM)
3187 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3188 goto done;
3189 }
3190 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3191 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3192 if (rc == -ENOMEM)
3193 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3194
2d70c103 3195done:
193b50b9 3196 if (cmd && (!cmd->aborted ||
d564a372 3197 !cmd->cmd_sent_to_fw)) {
6bc85dd5
HM		 3198 if (cmd->sg_mapped)
3199 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3200 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3201 }
6bc85dd5
HM		 3202
3203 if (!ha_locked)
3204 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3205
7b898542 3206 return;
2d70c103
NB		 3207}
3208
33e79977
QT		 3209static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3210{
3211 struct list_head free_list;
3212 struct qla_tgt_cmd *cmd, *tcmd;
3213
3214 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3215 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3216
3217 cmd = tcmd = NULL;
3218 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3219 INIT_LIST_HEAD(&free_list);
3220 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3221
3222 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3223 list_del(&cmd->cmd_list);
3224 /* This cmd was never sent to TCM. There is no need
3225 * to schedule free or call free_cmd
3226 */
3227 qlt_free_cmd(cmd);
3228 vha->hw->tgt.num_qfull_cmds_alloc--;
3229 }
3230 }
3231 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3232}
3233
3234static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3235{
3236 uint32_t total_leaked;
3237
3238 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3239
3240 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3241 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3242
3243 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3244 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3245 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3246
3247 if (IS_P3P_TYPE(vha->hw))
3248 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3249 else
3250 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3251 qla2xxx_wake_dpc(vha);
3252 }
3253
3254}
3255
7359df25
AP		 3256void qlt_abort_cmd(struct qla_tgt_cmd *cmd)
3257{
3258 struct qla_tgt *tgt = cmd->tgt;
3259 struct scsi_qla_host *vha = tgt->vha;
3260 struct se_cmd *se_cmd = &cmd->se_cmd;
3261
3262 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3263 "qla_target(%d): terminating exchange for aborted cmd=%p "
3264 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3265 se_cmd->tag);
3266
193b50b9 3267 cmd->aborted = 1;
7359df25
AP		 3268 cmd->cmd_flags |= BIT_6;
3269
3270 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
3271}
3272EXPORT_SYMBOL(qlt_abort_cmd);
3273
2d70c103
NB		 3274void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3275{
51a07f84
NB		 3276 struct qla_tgt_sess *sess = cmd->sess;
3277
f83adb61
QT		 3278 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3279 "%s: se_cmd[%p] ox_id %04x\n",
3280 __func__, &cmd->se_cmd,
3281 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3282
e07f8f65
SK		 3283 BUG_ON(cmd->cmd_in_wq);
3284
33e79977
QT		 3285 if (!cmd->q_full)
3286 qlt_decr_num_pend_cmds(cmd->vha);
3287
f83adb61 3288 BUG_ON(cmd->sg_mapped);
e07f8f65 3289 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3290 if (unlikely(cmd->free_sg))
3291 kfree(cmd->sg);
51a07f84
NB		 3292
3293 if (!sess || !sess->se_sess) {
3294 WARN_ON(1);
3295 return;
3296 }
e07f8f65 3297 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3298 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3299}
3300EXPORT_SYMBOL(qlt_free_cmd);
3301
3302/* ha->hardware_lock supposed to be held on entry */
3303static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
3304 struct qla_tgt_cmd *cmd, void *ctio)
3305{
3306 struct qla_tgt_srr_ctio *sc;
0e8cd71c 3307 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3308 struct qla_tgt_srr_imm *imm;
3309
3310 tgt->ctio_srr_id++;
e07f8f65 3311 cmd->cmd_flags |= BIT_15;
2d70c103
NB		 3312
3313 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
3314 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
3315
3316 if (!ctio) {
3317 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
3318 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
3319 vha->vp_idx);
3320 return -EINVAL;
3321 }
3322
3323 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
3324 if (sc != NULL) {
3325 sc->cmd = cmd;
3326 /* IRQ is already OFF */
3327 spin_lock(&tgt->srr_lock);
3328 sc->srr_id = tgt->ctio_srr_id;
3329 list_add_tail(&sc->srr_list_entry,
3330 &tgt->srr_ctio_list);
3331 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
3332 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
3333 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3334 int found = 0;
3335 list_for_each_entry(imm, &tgt->srr_imm_list,
3336 srr_list_entry) {
3337 if (imm->srr_id == sc->srr_id) {
3338 found = 1;
3339 break;
3340 }
3341 }
3342 if (found) {
3343 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
3344 "Scheduling srr work\n");
3345 schedule_work(&tgt->srr_work);
3346 } else {
3347 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
3348 "qla_target(%d): imm_srr_id "
3349 "== ctio_srr_id (%d), but there is no "
3350 "corresponding SRR IMM, deleting CTIO "
3351 "SRR %p\n", vha->vp_idx,
3352 tgt->ctio_srr_id, sc);
3353 list_del(&sc->srr_list_entry);
3354 spin_unlock(&tgt->srr_lock);
3355
3356 kfree(sc);
3357 return -EINVAL;
3358 }
3359 }
3360 spin_unlock(&tgt->srr_lock);
3361 } else {
3362 struct qla_tgt_srr_imm *ti;
3363
3364 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
3365 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
3366 vha->vp_idx);
3367 spin_lock(&tgt->srr_lock);
3368 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
3369 srr_list_entry) {
3370 if (imm->srr_id == tgt->ctio_srr_id) {
3371 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
3372 "IMM SRR %p deleted (id %d)\n",
3373 imm, imm->srr_id);
3374 list_del(&imm->srr_list_entry);
3375 qlt_reject_free_srr_imm(vha, imm, 1);
3376 }
3377 }
3378 spin_unlock(&tgt->srr_lock);
3379
3380 return -ENOMEM;
3381 }
3382
3383 return 0;
3384}
3385
3386/*
3387 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3388 */
3389static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
3390 struct qla_tgt_cmd *cmd, uint32_t status)
3391{
3392 int term = 0;
3393
3394 if (ctio != NULL) {
3395 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3396 term = !(c->flags &
ad950360 3397 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3398 } else
3399 term = 1;
3400
3401 if (term)
3402 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
3403
3404 return term;
3405}
3406
3407/* ha->hardware_lock supposed to be held on entry */
3408static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
3409 uint32_t handle)
3410{
3411 struct qla_hw_data *ha = vha->hw;
3412
3413 handle--;
3414 if (ha->tgt.cmds[handle] != NULL) {
3415 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
3416 ha->tgt.cmds[handle] = NULL;
3417 return cmd;
3418 } else
3419 return NULL;
3420}
3421
3422/* ha->hardware_lock supposed to be held on entry */
3423static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3424 uint32_t handle, void *ctio)
3425{
3426 struct qla_tgt_cmd *cmd = NULL;
3427
3428 /* Clear out internal marks */
3429 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
3430 CTIO_INTERMEDIATE_HANDLE_MARK);
3431
3432 if (handle != QLA_TGT_NULL_HANDLE) {
667024a3 3433 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
2d70c103 3434 return NULL;
667024a3 3435
2d70c103 3436 /* handle-1 is actually used */
8d93f550 3437 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 3438 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3439 "qla_target(%d): Wrong handle %x received\n",
3440 vha->vp_idx, handle);
3441 return NULL;
3442 }
3443 cmd = qlt_get_cmd(vha, handle);
3444 if (unlikely(cmd == NULL)) {
3445 ql_dbg(ql_dbg_tgt, vha, 0xe053,
3446 "qla_target(%d): Suspicious: unable to "
3447 "find the command with handle %x\n", vha->vp_idx,
3448 handle);
3449 return NULL;
3450 }
3451 } else if (ctio != NULL) {
3452 /* We can't get loop ID from CTIO7 */
3453 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3454 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3455 "support NULL handles\n", vha->vp_idx);
3456 return NULL;
3457 }
3458
3459 return cmd;
3460}
3461
c0cb4496
AE		 3462/* hardware_lock should be held by caller. */
3463static void
3464qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3465{
3466 struct qla_hw_data *ha = vha->hw;
3467 uint32_t handle;
3468
3469 if (cmd->sg_mapped)
3470 qlt_unmap_sg(vha, cmd);
3471
3472 handle = qlt_make_handle(vha);
3473
3474 /* TODO: fix debug message type and ids. */
3475 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3476 ql_dbg(ql_dbg_io, vha, 0xff00,
3477 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
3478 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3479 cmd->write_data_transferred = 0;
3480 cmd->state = QLA_TGT_STATE_DATA_IN;
3481
3482 ql_dbg(ql_dbg_io, vha, 0xff01,
3483 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
3484
3485 ha->tgt.tgt_ops->handle_data(cmd);
3486 return;
c0cb4496
AE		 3487 } else {
3488 ql_dbg(ql_dbg_io, vha, 0xff03,
3489 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
3490 cmd->state);
3491 dump_stack();
3492 }
3493
e5fdee87 3494 cmd->cmd_flags |= BIT_17;
c0cb4496
AE		 3495 ha->tgt.tgt_ops->free_cmd(cmd);
3496}
3497
3498void
3499qlt_host_reset_handler(struct qla_hw_data *ha)
3500{
3501 struct qla_tgt_cmd *cmd;
3502 unsigned long flags;
3503 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
3504 scsi_qla_host_t *vha = NULL;
3505 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
3506 uint32_t i;
3507
3508 if (!base_vha->hw->tgt.tgt_ops)
3509 return;
3510
3511 if (!tgt || qla_ini_mode_enabled(base_vha)) {
3512 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
3513 "Target mode disabled\n");
3514 return;
3515 }
3516
3517 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
3518 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
3519 base_vha->dpc_flags);
3520
3521 spin_lock_irqsave(&ha->hardware_lock, flags);
3522 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
3523 cmd = qlt_get_cmd(base_vha, i);
3524 if (!cmd)
3525 continue;
3526 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
3527 vha = cmd->vha;
3528 qlt_abort_cmd_on_host_reset(vha, cmd);
3529 }
3530 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3531}
3532
3533
2d70c103
NB		 3534/*
3535 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3536 */
3537static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
3538 uint32_t status, void *ctio)
3539{
3540 struct qla_hw_data *ha = vha->hw;
3541 struct se_cmd *se_cmd;
2d70c103
NB		 3542 struct qla_tgt_cmd *cmd;
3543
2d70c103
NB		 3544 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3545 /* That could happen only in case of an error/reset/abort */
3546 if (status != CTIO_SUCCESS) {
3547 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3548 "Intermediate CTIO received"
3549 " (status %x)\n", status);
3550 }
3551 return;
3552 }
3553
3554 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 3555 if (cmd == NULL)
2d70c103 3556 return;
092e1dc3 3557
2d70c103 3558 se_cmd = &cmd->se_cmd;
d564a372 3559 cmd->cmd_sent_to_fw = 0;
2d70c103 3560
f9b6721a 3561 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3562
3563 if (unlikely(status != CTIO_SUCCESS)) {
3564 switch (status & 0xFFFF) {
3565 case CTIO_LIP_RESET:
3566 case CTIO_TARGET_RESET:
3567 case CTIO_ABORTED:
7b898542 3568 /* driver request abort via Terminate exchange */
2d70c103
NB		 3569 case CTIO_TIMEOUT:
3570 case CTIO_INVALID_RX_ID:
3571 /* They are OK */
3572 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3573 "qla_target(%d): CTIO with "
3574 "status %#x received, state %x, se_cmd %p, "
3575 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3576 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3577 status, cmd->state, se_cmd);
3578 break;
3579
3580 case CTIO_PORT_LOGGED_OUT:
3581 case CTIO_PORT_UNAVAILABLE:
71cdc079
AP		 3582 {
3583 bool logged_out = (status & 0xFFFF);
2d70c103 3584 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3585 "qla_target(%d): CTIO with %s status %x "
2d70c103 3586 "received (state %x, se_cmd %p)\n", vha->vp_idx,
71cdc079
AP		 3587 (logged_out == CTIO_PORT_LOGGED_OUT) ?
3588 "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3589 status, cmd->state, se_cmd);
2d70c103 3590
71cdc079
AP		 3591 if (logged_out && cmd->sess) {
3592 /*
3593 * Session is already logged out, but we need
3594 * to notify initiator, who's not aware of this
3595 */
3596 cmd->sess->logout_on_delete = 0;
3597 cmd->sess->send_els_logo = 1;
3598 qlt_schedule_sess_for_deletion(cmd->sess, true);
3599 }
3600 break;
3601 }
2d70c103
NB		 3602 case CTIO_SRR_RECEIVED:
3603 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
3604 "qla_target(%d): CTIO with SRR_RECEIVED"
3605 " status %x received (state %x, se_cmd %p)\n",
3606 vha->vp_idx, status, cmd->state, se_cmd);
3607 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
3608 break;
3609 else
3610 return;
3611
f83adb61
QT		 3612 case CTIO_DIF_ERROR: {
3613 struct ctio_crc_from_fw *crc =
3614 (struct ctio_crc_from_fw *)ctio;
3615 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3616 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
3617 vha->vp_idx, status, cmd->state, se_cmd,
3618 *((u64 *)&crc->actual_dif[0]),
3619 *((u64 *)&crc->expected_dif[0]));
3620
3621 if (qlt_handle_dif_error(vha, cmd, ctio)) {
3622 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3623 /* scsi Write/xfer rdy complete */
3624 goto skip_term;
3625 } else {
3626 /* scsi read/xmit respond complete
3627 * call handle dif to send scsi status
3628 * rather than terminate exchange.
3629 */
3630 cmd->state = QLA_TGT_STATE_PROCESSED;
3631 ha->tgt.tgt_ops->handle_dif_err(cmd);
3632 return;
3633 }
3634 } else {
3635 /* Need to generate a SCSI good completion.
3636 * because FW did not send scsi status.
3637 */
3638 status = 0;
3639 goto skip_term;
3640 }
3641 break;
3642 }
2d70c103
NB		 3643 default:
3644 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3645 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3646 vha->vp_idx, status, cmd->state, se_cmd);
3647 break;
3648 }
3649
7b898542 3650
193b50b9 3651 /* "cmd->aborted" means
7b898542
QT		 3652 * cmd is already aborted/terminated, we don't
3653 * need to terminate again. The exchange is already
3654 * cleaned up/freed at FW level. Just cleanup at driver
3655 * level.
3656 */
3657 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3658 (!cmd->aborted)) {
e07f8f65 3659 cmd->cmd_flags |= BIT_13;
2d70c103
NB		 3660 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3661 return;
7b898542 3662 }
2d70c103 3663 }
f83adb61 3664skip_term:
2d70c103
NB		 3665
3666 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
e5fdee87 3667 cmd->cmd_flags |= BIT_12;
2d70c103 3668 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3669 cmd->state = QLA_TGT_STATE_DATA_IN;
3670
52c82823 3671 if (status == CTIO_SUCCESS)
2d70c103
NB		 3672 cmd->write_data_transferred = 1;
3673
2d70c103
NB		 3674 ha->tgt.tgt_ops->handle_data(cmd);
3675 return;
193b50b9 3676 } else if (cmd->aborted) {
e5fdee87 3677 cmd->cmd_flags |= BIT_18;
2d70c103 3678 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3679 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3680 } else {
e5fdee87 3681 cmd->cmd_flags |= BIT_19;
2d70c103
NB		 3682 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3683 "qla_target(%d): A command in state (%d) should "
3684 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3685 }
3686
7b898542 3687 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3688 !cmd->aborted) {
2d70c103
NB		 3689 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3690 dump_stack();
3691 }
3692
3693 ha->tgt.tgt_ops->free_cmd(cmd);
3694}
3695
2d70c103
NB		 3696static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3697 uint8_t task_codes)
3698{
3699 int fcp_task_attr;
3700
3701 switch (task_codes) {
3702 case ATIO_SIMPLE_QUEUE:
68d81f40 3703 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3704 break;
3705 case ATIO_HEAD_OF_QUEUE:
68d81f40 3706 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3707 break;
3708 case ATIO_ORDERED_QUEUE:
68d81f40 3709 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3710 break;
3711 case ATIO_ACA_QUEUE:
68d81f40 3712 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3713 break;
3714 case ATIO_UNTAGGED:
68d81f40 3715 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3716 break;
3717 default:
3718 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3719 "qla_target: unknown task code %x, use ORDERED instead\n",
3720 task_codes);
68d81f40 3721 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3722 break;
3723 }
3724
3725 return fcp_task_attr;
3726}
3727
3728static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3729 uint8_t *);
3730/*
3731 * Process context for I/O path into tcm_qla2xxx code
3732 */
51a07f84 3733static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3734{
2d70c103
NB		 3735 scsi_qla_host_t *vha = cmd->vha;
3736 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3737 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3738 struct qla_tgt_sess *sess = cmd->sess;
2d70c103
NB		 3739 struct atio_from_isp *atio = &cmd->atio;
3740 unsigned char *cdb;
3741 unsigned long flags;
3742 uint32_t data_length;
3743 int ret, fcp_task_attr, data_dir, bidi = 0;
3744
e07f8f65
SK		 3745 cmd->cmd_in_wq = 0;
3746 cmd->cmd_flags |= BIT_1;
2d70c103
NB		 3747 if (tgt->tgt_stop)
3748 goto out_term;
3749
193b50b9 3750 if (cmd->aborted) {
8b2f5ff3
SN		 3751 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
3752 "cmd with tag %u is aborted\n",
3753 cmd->atio.u.isp24.exchange_addr);
3754 goto out_term;
3755 }
3756
2d70c103 3757 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 3758 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 3759 cmd->unpacked_lun = scsilun_to_int(
3760 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3761
3762 if (atio->u.isp24.fcp_cmnd.rddata &&
3763 atio->u.isp24.fcp_cmnd.wrdata) {
3764 bidi = 1;
3765 data_dir = DMA_TO_DEVICE;
3766 } else if (atio->u.isp24.fcp_cmnd.rddata)
3767 data_dir = DMA_FROM_DEVICE;
3768 else if (atio->u.isp24.fcp_cmnd.wrdata)
3769 data_dir = DMA_TO_DEVICE;
3770 else
3771 data_dir = DMA_NONE;
3772
3773 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3774 atio->u.isp24.fcp_cmnd.task_attr);
3775 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3776 &atio->u.isp24.fcp_cmnd.add_cdb[
3777 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3778
51a07f84
NB		 3779 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3780 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 3781 if (ret != 0)
3782 goto out_term;
3783 /*
3784 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3785 */
7560151b 3786 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 3787 ha->tgt.tgt_ops->put_sess(sess);
7560151b 3788 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 3789 return;
3790
3791out_term:
667024a3 3792 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 3793 /*
fae9eaf8
RD		 3794 * cmd has not sent to target yet, so pass NULL as the second
3795 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 3796 */
e07f8f65 3797 cmd->cmd_flags |= BIT_2;
2d70c103
NB		 3798 spin_lock_irqsave(&ha->hardware_lock, flags);
3799 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
33e79977
QT		 3800
3801 qlt_decr_num_pend_cmds(vha);
51a07f84 3802 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
51a07f84 3803 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7560151b
QT		 3804
3805 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
3806 ha->tgt.tgt_ops->put_sess(sess);
3807 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 3808}
3809
3810static void qlt_do_work(struct work_struct *work)
3811{
3812 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 3813 scsi_qla_host_t *vha = cmd->vha;
3814 unsigned long flags;
3815
3816 spin_lock_irqsave(&vha->cmd_list_lock, flags);
3817 list_del(&cmd->cmd_list);
3818 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 3819
3820 __qlt_do_work(cmd);
3821}
3822
3823static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
3824 struct qla_tgt_sess *sess,
3825 struct atio_from_isp *atio)
3826{
3827 struct se_session *se_sess = sess->se_sess;
3828 struct qla_tgt_cmd *cmd;
3829 int tag;
3830
3831 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3832 if (tag < 0)
3833 return NULL;
3834
3835 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3836 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3837
3838 memcpy(&cmd->atio, atio, sizeof(*atio));
3839 cmd->state = QLA_TGT_STATE_NEW;
3840 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 3841 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 3842 cmd->vha = vha;
3843 cmd->se_cmd.map_tag = tag;
3844 cmd->sess = sess;
3845 cmd->loop_id = sess->loop_id;
3846 cmd->conf_compl_supported = sess->conf_compl_supported;
3847
9fce1254
KS		 3848 cmd->cmd_flags = 0;
3849 cmd->jiffies_at_alloc = get_jiffies_64();
3850
3851 cmd->reset_count = vha->hw->chip_reset;
3852
51a07f84
NB		 3853 return cmd;
3854}
3855
3856static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
3857 uint16_t);
3858
3859static void qlt_create_sess_from_atio(struct work_struct *work)
3860{
3861 struct qla_tgt_sess_op *op = container_of(work,
3862 struct qla_tgt_sess_op, work);
3863 scsi_qla_host_t *vha = op->vha;
3864 struct qla_hw_data *ha = vha->hw;
3865 struct qla_tgt_sess *sess;
3866 struct qla_tgt_cmd *cmd;
3867 unsigned long flags;
3868 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
3869
8b2f5ff3
SN		 3870 spin_lock_irqsave(&vha->cmd_list_lock, flags);
3871 list_del(&op->cmd_list);
3872 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
3873
3874 if (op->aborted) {
3875 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
3876 "sess_op with tag %u is aborted\n",
3877 op->atio.u.isp24.exchange_addr);
3878 goto out_term;
3879 }
3880
51a07f84 3881 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
8b2f5ff3
SN		 3882 "qla_target(%d): Unable to find wwn login"
3883 " (s_id %x:%x:%x), trying to create it manually\n",
3884 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
51a07f84
NB		 3885
3886 if (op->atio.u.raw.entry_count > 1) {
3887 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
8b2f5ff3 3888 "Dropping multy entry atio %p\n", &op->atio);
51a07f84
NB		 3889 goto out_term;
3890 }
3891
51a07f84
NB		 3892 sess = qlt_make_local_sess(vha, s_id);
3893 /* sess has an extra creation ref. */
51a07f84
NB		 3894
3895 if (!sess)
3896 goto out_term;
3897 /*
3898 * Now obtain a pre-allocated session tag using the original op->atio
3899 * packet header, and dispatch into __qlt_do_work() using the existing
3900 * process context.
3901 */
3902 cmd = qlt_get_tag(vha, sess, &op->atio);
3903 if (!cmd) {
3904 spin_lock_irqsave(&ha->hardware_lock, flags);
3905 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
2d70c103 3906 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 3907 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3908 kfree(op);
3909 return;
3910 }
3911 /*
3912 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release
3913 * the extra reference taken above by qlt_make_local_sess()
3914 */
3915 __qlt_do_work(cmd);
3916 kfree(op);
3917 return;
3918
3919out_term:
3920 spin_lock_irqsave(&ha->hardware_lock, flags);
3921 qlt_send_term_exchange(vha, NULL, &op->atio, 1);
08234e3a 3922 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84
NB		 3923 kfree(op);
3924
2d70c103
NB		 3925}
3926
3927/* ha->hardware_lock supposed to be held on entry */
3928static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3929 struct atio_from_isp *atio)
3930{
51a07f84 3931 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3932 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3933 struct qla_tgt_sess *sess;
2d70c103
NB		 3934 struct qla_tgt_cmd *cmd;
3935
3936 if (unlikely(tgt->tgt_stop)) {
667024a3 3937 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 3938 "New command while device %p is shutting down\n", tgt);
3939 return -EFAULT;
3940 }
3941
51a07f84
NB		 3942 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
3943 if (unlikely(!sess)) {
3944 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
3945 GFP_ATOMIC);
3946 if (!op)
3947 return -ENOMEM;
3948
3949 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 3950 op->vha = vha;
8b2f5ff3
SN		 3951
3952 spin_lock(&vha->cmd_list_lock);
3953 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
3954 spin_unlock(&vha->cmd_list_lock);
3955
51a07f84
NB		 3956 INIT_WORK(&op->work, qlt_create_sess_from_atio);
3957 queue_work(qla_tgt_wq, &op->work);
3958 return 0;
3959 }
e52a8b45
AP		 3960
3961 /* Another WWN used to have our s_id. Our PLOGI scheduled its
3962 * session deletion, but it's still in sess_del_work wq */
3963 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
3964 ql_dbg(ql_dbg_io, vha, 0x3061,
3965 "New command while old session %p is being deleted\n",
3966 sess);
3967 return -EFAULT;
3968 }
3969
51a07f84
NB		 3970 /*
3971 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
3972 */
3973 kref_get(&sess->se_sess->sess_kref);
3974
3975 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 3976 if (!cmd) {
667024a3 3977 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 3978 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
51a07f84 3979 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 3980 return -ENOMEM;
3981 }
3982
e07f8f65
SK		 3983 cmd->cmd_in_wq = 1;
3984 cmd->cmd_flags |= BIT_0;
fb3269ba 3985 cmd->se_cmd.cpuid = -1;
8b2f5ff3
SN		 3986
3987 spin_lock(&vha->cmd_list_lock);
3988 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
3989 spin_unlock(&vha->cmd_list_lock);
3990
2d70c103 3991 INIT_WORK(&cmd->work, qlt_do_work);
fb3269ba
QT		 3992 if (ha->msix_count) {
3993 cmd->se_cmd.cpuid = ha->tgt.rspq_vector_cpuid;
3994 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
3995 queue_work_on(smp_processor_id(), qla_tgt_wq,
3996 &cmd->work);
3997 else
3998 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
3999 &cmd->work);
4000 } else {
4001 queue_work(qla_tgt_wq, &cmd->work);
4002 }
2d70c103
NB		 4003 return 0;
4004
4005}
4006
4007/* ha->hardware_lock supposed to be held on entry */
4008static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
4009 int fn, void *iocb, int flags)
4010{
4011 struct scsi_qla_host *vha = sess->vha;
4012 struct qla_hw_data *ha = vha->hw;
4013 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4014 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103
NB		 4015 int res;
4016 uint8_t tmr_func;
4017
4018 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4019 if (!mcmd) {
4020 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4021 "qla_target(%d): Allocation of management "
4022 "command failed, some commands and their data could "
4023 "leak\n", vha->vp_idx);
4024 return -ENOMEM;
4025 }
4026 memset(mcmd, 0, sizeof(*mcmd));
4027 mcmd->sess = sess;
4028
4029 if (iocb) {
4030 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4031 sizeof(mcmd->orig_iocb.imm_ntfy));
4032 }
4033 mcmd->tmr_func = fn;
4034 mcmd->flags = flags;
b6a029e1 4035 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 4036
4037 switch (fn) {
4038 case QLA_TGT_CLEAR_ACA:
4039 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
4040 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
4041 tmr_func = TMR_CLEAR_ACA;
4042 break;
4043
4044 case QLA_TGT_TARGET_RESET:
4045 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
4046 "qla_target(%d): TARGET_RESET received\n",
4047 sess->vha->vp_idx);
4048 tmr_func = TMR_TARGET_WARM_RESET;
4049 break;
4050
4051 case QLA_TGT_LUN_RESET:
4052 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
4053 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
4054 tmr_func = TMR_LUN_RESET;
8b2f5ff3 4055 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
2d70c103
NB		 4056 break;
4057
4058 case QLA_TGT_CLEAR_TS:
4059 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
4060 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
4061 tmr_func = TMR_CLEAR_TASK_SET;
4062 break;
4063
4064 case QLA_TGT_ABORT_TS:
4065 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
4066 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
4067 tmr_func = TMR_ABORT_TASK_SET;
4068 break;
4069#if 0
4070 case QLA_TGT_ABORT_ALL:
4071 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
4072 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
4073 sess->vha->vp_idx);
4074 tmr_func = 0;
4075 break;
4076
4077 case QLA_TGT_ABORT_ALL_SESS:
4078 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
4079 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
4080 sess->vha->vp_idx);
4081 tmr_func = 0;
4082 break;
4083
4084 case QLA_TGT_NEXUS_LOSS_SESS:
4085 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
4086 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
4087 sess->vha->vp_idx);
4088 tmr_func = 0;
4089 break;
4090
4091 case QLA_TGT_NEXUS_LOSS:
4092 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
4093 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
4094 tmr_func = 0;
4095 break;
4096#endif
4097 default:
4098 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
4099 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
4100 sess->vha->vp_idx, fn);
4101 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4102 return -ENOSYS;
4103 }
4104
4105 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
4106 if (res != 0) {
4107 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4108 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4109 sess->vha->vp_idx, res);
4110 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4111 return -EFAULT;
4112 }
4113
4114 return 0;
4115}
4116
4117/* ha->hardware_lock supposed to be held on entry */
4118static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4119{
4120 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4121 struct qla_hw_data *ha = vha->hw;
4122 struct qla_tgt *tgt;
4123 struct qla_tgt_sess *sess;
4124 uint32_t lun, unpacked_lun;
52c82823 4125 int fn;
7560151b 4126 unsigned long flags;
2d70c103 4127
0e8cd71c 4128 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4129
4130 lun = a->u.isp24.fcp_cmnd.lun;
2d70c103 4131 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4132
4133 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4134 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4135 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4136 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4137
2d70c103
NB		 4138 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4139
4140 if (!sess) {
4141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4142 "qla_target(%d): task mgmt fn 0x%x for "
4143 "non-existant session\n", vha->vp_idx, fn);
4144 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4145 sizeof(struct atio_from_isp));
4146 }
4147
e52a8b45
AP		 4148 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)
4149 return -EFAULT;
4150
2d70c103
NB		 4151 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4152}
4153
4154/* ha->hardware_lock supposed to be held on entry */
4155static int __qlt_abort_task(struct scsi_qla_host *vha,
4156 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
4157{
4158 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4159 struct qla_hw_data *ha = vha->hw;
4160 struct qla_tgt_mgmt_cmd *mcmd;
4161 uint32_t lun, unpacked_lun;
4162 int rc;
4163
4164 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4165 if (mcmd == NULL) {
4166 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4167 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4168 vha->vp_idx, __func__);
4169 return -ENOMEM;
4170 }
4171 memset(mcmd, 0, sizeof(*mcmd));
4172
4173 mcmd->sess = sess;
4174 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4175 sizeof(mcmd->orig_iocb.imm_ntfy));
4176
4177 lun = a->u.isp24.fcp_cmnd.lun;
4178 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
80187f8e 4179 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 4180
4181 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
4182 le16_to_cpu(iocb->u.isp2x.seq_id));
4183 if (rc != 0) {
4184 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4185 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4186 vha->vp_idx, rc);
4187 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4188 return -EFAULT;
4189 }
4190
4191 return 0;
4192}
4193
4194/* ha->hardware_lock supposed to be held on entry */
4195static int qlt_abort_task(struct scsi_qla_host *vha,
4196 struct imm_ntfy_from_isp *iocb)
4197{
4198 struct qla_hw_data *ha = vha->hw;
4199 struct qla_tgt_sess *sess;
4200 int loop_id;
7560151b 4201 unsigned long flags;
2d70c103
NB		 4202
4203 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4204
7560151b 4205 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4206 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4207 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4208
2d70c103
NB		 4209 if (sess == NULL) {
4210 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4211 "qla_target(%d): task abort for unexisting "
4212 "session\n", vha->vp_idx);
0e8cd71c 4213 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4214 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4215 }
4216
4217 return __qlt_abort_task(vha, iocb, sess);
4218}
4219
a6ca8878
AP		 4220void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4221{
4222 if (fcport->tgt_session) {
4223 if (rc != MBS_COMMAND_COMPLETE) {
df673274 4224 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
a6ca8878
AP		 4225 "%s: se_sess %p / sess %p from"
4226 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4227 " LOGO failed: %#x\n",
4228 __func__,
4229 fcport->tgt_session->se_sess,
4230 fcport->tgt_session,
4231 fcport->port_name, fcport->loop_id,
4232 fcport->d_id.b.domain, fcport->d_id.b.area,
4233 fcport->d_id.b.al_pa, rc);
4234 }
4235
4236 fcport->tgt_session->logout_completed = 1;
4237 }
4238}
4239
a6ca8878
AP		 4240/*
4241* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4242*
4243* Schedules sessions with matching port_id/loop_id but different wwn for
4244* deletion. Returns existing session with matching wwn if present.
4245* Null otherwise.
4246*/
4247static struct qla_tgt_sess *
4248qlt_find_sess_invalidate_other(struct qla_tgt *tgt, uint64_t wwn,
b7bd104e 4249 port_id_t port_id, uint16_t loop_id, struct qla_tgt_sess **conflict_sess)
a6ca8878
AP		 4250{
4251 struct qla_tgt_sess *sess = NULL, *other_sess;
4252 uint64_t other_wwn;
4253
b7bd104e
AP		 4254 *conflict_sess = NULL;
4255
a6ca8878
AP		 4256 list_for_each_entry(other_sess, &tgt->sess_list, sess_list_entry) {
4257
4258 other_wwn = wwn_to_u64(other_sess->port_name);
4259
4260 if (wwn == other_wwn) {
4261 WARN_ON(sess);
4262 sess = other_sess;
4263 continue;
4264 }
4265
4266 /* find other sess with nport_id collision */
4267 if (port_id.b24 == other_sess->s_id.b24) {
4268 if (loop_id != other_sess->loop_id) {
4269 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000c,
4270 "Invalidating sess %p loop_id %d wwn %llx.\n",
4271 other_sess, other_sess->loop_id, other_wwn);
4272
4273 /*
4274 * logout_on_delete is set by default, but another
4275 * session that has the same s_id/loop_id combo
4276 * might have cleared it when requested this session
4277 * deletion, so don't touch it
4278 */
4279 qlt_schedule_sess_for_deletion(other_sess, true);
4280 } else {
4281 /*
4282 * Another wwn used to have our s_id/loop_id
b7bd104e 4283 * kill the session, but don't free the loop_id
a6ca8878 4284 */
b7bd104e
AP		 4285 other_sess->keep_nport_handle = 1;
4286 *conflict_sess = other_sess;
a6ca8878
AP		 4287 qlt_schedule_sess_for_deletion(other_sess,
4288 true);
4289 }
4290 continue;
4291 }
4292
4293 /* find other sess with nport handle collision */
4294 if (loop_id == other_sess->loop_id) {
4295 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000d,
4296 "Invalidating sess %p loop_id %d wwn %llx.\n",
4297 other_sess, other_sess->loop_id, other_wwn);
4298
4299 /* Same loop_id but different s_id
4300 * Ok to kill and logout */
4301 qlt_schedule_sess_for_deletion(other_sess, true);
4302 }
4303 }
4304
4305 return sess;
4306}
4307
daddf5cf
AP		 4308/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4309static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4310{
4311 struct qla_tgt_sess_op *op;
4312 struct qla_tgt_cmd *cmd;
4313 uint32_t key;
4314 int count = 0;
4315
4316 key = (((u32)s_id->b.domain << 16) |
4317 ((u32)s_id->b.area << 8) |
4318 ((u32)s_id->b.al_pa));
4319
4320 spin_lock(&vha->cmd_list_lock);
4321 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4322 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4323 if (op_key == key) {
4324 op->aborted = true;
4325 count++;
4326 }
4327 }
4328 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4329 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4330 if (cmd_key == key) {
193b50b9 4331 cmd->aborted = 1;
daddf5cf
AP		 4332 count++;
4333 }
4334 }
4335 spin_unlock(&vha->cmd_list_lock);
4336
4337 return count;
4338}
4339
2d70c103
NB		 4340/*
4341 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4342 */
4343static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4344 struct imm_ntfy_from_isp *iocb)
4345{
a6ca8878 4346 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4347 struct qla_hw_data *ha = vha->hw;
b7bd104e 4348 struct qla_tgt_sess *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4349 uint64_t wwn;
4350 port_id_t port_id;
4351 uint16_t loop_id;
4352 uint16_t wd3_lo;
2d70c103 4353 int res = 0;
b7bd104e 4354 qlt_plogi_ack_t *pla;
7560151b 4355 unsigned long flags;
2d70c103 4356
a6ca8878
AP		 4357 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4358
4359 port_id.b.domain = iocb->u.isp24.port_id[2];
4360 port_id.b.area = iocb->u.isp24.port_id[1];
4361 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4362 port_id.b.rsvd_1 = 0;
4363
4364 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4365
2d70c103 4366 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
7b833558
OK		 4367 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
4368 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2d70c103 4369
a6ca8878
AP		 4370 /* res = 1 means ack at the end of thread
4371 * res = 0 means ack async/later.
4372 */
2d70c103
NB		 4373 switch (iocb->u.isp24.status_subcode) {
4374 case ELS_PLOGI:
a6ca8878 4375
daddf5cf
AP		 4376 /* Mark all stale commands in qla_tgt_wq for deletion */
4377 abort_cmds_for_s_id(vha, &port_id);
4378
7560151b
QT		 4379 if (wwn) {
4380 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
a6ca8878 4381 sess = qlt_find_sess_invalidate_other(tgt, wwn,
b7bd104e 4382 port_id, loop_id, &conflict_sess);
7560151b
QT		 4383 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4384 }
a6ca8878 4385
b7bd104e 4386 if (IS_SW_RESV_ADDR(port_id) || (!sess && !conflict_sess)) {
a6ca8878
AP		 4387 res = 1;
4388 break;
4389 }
4390
b7bd104e
AP		 4391 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4392 if (!pla) {
a6ca8878
AP		 4393 qlt_send_term_imm_notif(vha, iocb, 1);
4394
4395 res = 0;
4396 break;
4397 }
4398
4399 res = 0;
4400
b7bd104e
AP		 4401 if (conflict_sess)
4402 qlt_plogi_ack_link(vha, pla, conflict_sess,
4403 QLT_PLOGI_LINK_CONFLICT);
a6ca8878 4404
b7bd104e
AP		 4405 if (!sess)
4406 break;
4407
4408 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
a6ca8878
AP		 4409 /*
4410 * Under normal circumstances we want to release nport handle
4411 * during LOGO process to avoid nport handle leaks inside FW.
4412 * The exception is when LOGO is done while another PLOGI with
4413 * the same nport handle is waiting as might be the case here.
4414 * Note: there is always a possibily of a race where session
4415 * deletion has already started for other reasons (e.g. ACL
4416 * removal) and now PLOGI arrives:
4417 * 1. if PLOGI arrived in FW after nport handle has been freed,
4418 * FW must have assigned this PLOGI a new/same handle and we
4419 * can proceed ACK'ing it as usual when session deletion
4420 * completes.
4421 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4422 * bit reached it, the handle has now been released. We'll
4423 * get an error when we ACK this PLOGI. Nothing will be sent
4424 * back to initiator. Initiator should eventually retry
4425 * PLOGI and situation will correct itself.
4426 */
4427 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4428 (sess->s_id.b24 == port_id.b24));
4429 qlt_schedule_sess_for_deletion(sess, true);
4430 break;
4431
2d70c103 4432 case ELS_PRLI:
a6ca8878
AP		 4433 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4434
7560151b
QT		 4435 if (wwn) {
4436 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
a6ca8878 4437 sess = qlt_find_sess_invalidate_other(tgt, wwn, port_id,
b7bd104e 4438 loop_id, &conflict_sess);
7560151b
QT		 4439 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4440 }
b7bd104e
AP		 4441
4442 if (conflict_sess) {
4443 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4444 "PRLI with conflicting sess %p port %8phC\n",
4445 conflict_sess, conflict_sess->port_name);
4446 qlt_send_term_imm_notif(vha, iocb, 1);
4447 res = 0;
4448 break;
4449 }
a6ca8878
AP		 4450
4451 if (sess != NULL) {
4452 if (sess->deleted) {
4453 /*
4454 * Impatient initiator sent PRLI before last
4455 * PLOGI could finish. Will force him to re-try,
4456 * while last one finishes.
4457 */
df673274 4458 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4459 "sess %p PRLI received, before plogi ack.\n",
4460 sess);
4461 qlt_send_term_imm_notif(vha, iocb, 1);
4462 res = 0;
4463 break;
4464 }
4465
4466 /*
4467 * This shouldn't happen under normal circumstances,
4468 * since we have deleted the old session during PLOGI
4469 */
df673274 4470 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4471 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4472 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4473
4474 sess->local = 0;
4475 sess->loop_id = loop_id;
4476 sess->s_id = port_id;
4477
4478 if (wd3_lo & BIT_7)
4479 sess->conf_compl_supported = 1;
4480
df673274
AP		 4481 }
4482 res = 1; /* send notify ack */
4483
4484 /* Make session global (not used in fabric mode) */
4485 if (ha->current_topology != ISP_CFG_F) {
4486 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4487 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4488 qla2xxx_wake_dpc(vha);
a6ca8878
AP		 4489 } else {
4490 /* todo: else - create sess here. */
4491 res = 1; /* send notify ack */
4492 }
4493
4494 break;
4495
2d70c103
NB		 4496 case ELS_LOGO:
4497 case ELS_PRLO:
4498 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4499 break;
4500 case ELS_PDISC:
4501 case ELS_ADISC:
4502 {
0e8cd71c 4503 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4504 if (tgt->link_reinit_iocb_pending) {
4505 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4506 0, 0, 0, 0, 0, 0);
4507 tgt->link_reinit_iocb_pending = 0;
4508 }
4509 res = 1; /* send notify ack */
4510 break;
4511 }
4512
a6ca8878 4513 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4514 default:
4515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4516 "qla_target(%d): Unsupported ELS command %x "
4517 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4518 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4519 break;
4520 }
4521
4522 return res;
4523}
4524
4525static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
4526{
5897cb2f
BVA		 4527#if 1
4528 /*
4529 * FIXME: Reject non zero SRR relative offset until we can test
4530 * this code properly.
4531 */
4532 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
4533 return -1;
4534#else
2d70c103
NB		 4535 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
4536 size_t first_offset = 0, rem_offset = offset, tmp = 0;
4537 int i, sg_srr_cnt, bufflen = 0;
4538
4539 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
4540 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
4541 "cmd->sg_cnt: %u, direction: %d\n",
4542 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
4543
2d70c103
NB		 4544 if (!cmd->sg || !cmd->sg_cnt) {
4545 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
4546 "Missing cmd->sg or zero cmd->sg_cnt in"
4547 " qla_tgt_set_data_offset\n");
4548 return -EINVAL;
4549 }
4550 /*
4551 * Walk the current cmd->sg list until we locate the new sg_srr_start
4552 */
4553 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
4554 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
4555 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
4556 i, sg, sg_page(sg), sg->length, sg->offset);
4557
4558 if ((sg->length + tmp) > offset) {
4559 first_offset = rem_offset;
4560 sg_srr_start = sg;
4561 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
4562 "Found matching sg[%d], using %p as sg_srr_start, "
4563 "and using first_offset: %zu\n", i, sg,
4564 first_offset);
4565 break;
4566 }
4567 tmp += sg->length;
4568 rem_offset -= sg->length;
4569 }
4570
4571 if (!sg_srr_start) {
4572 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
4573 "Unable to locate sg_srr_start for offset: %u\n", offset);
4574 return -EINVAL;
4575 }
4576 sg_srr_cnt = (cmd->sg_cnt - i);
4577
4578 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
4579 if (!sg_srr) {
4580 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
4581 "Unable to allocate sgp\n");
4582 return -ENOMEM;
4583 }
4584 sg_init_table(sg_srr, sg_srr_cnt);
4585 sgp = &sg_srr[0];
4586 /*
4587 * Walk the remaining list for sg_srr_start, mapping to the newly
4588 * allocated sg_srr taking first_offset into account.
4589 */
4590 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
4591 if (first_offset) {
4592 sg_set_page(sgp, sg_page(sg),
4593 (sg->length - first_offset), first_offset);
4594 first_offset = 0;
4595 } else {
4596 sg_set_page(sgp, sg_page(sg), sg->length, 0);
4597 }
4598 bufflen += sgp->length;
4599
4600 sgp = sg_next(sgp);
4601 if (!sgp)
4602 break;
4603 }
4604
4605 cmd->sg = sg_srr;
4606 cmd->sg_cnt = sg_srr_cnt;
4607 cmd->bufflen = bufflen;
4608 cmd->offset += offset;
4609 cmd->free_sg = 1;
4610
4611 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
4612 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
4613 cmd->sg_cnt);
4614 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
4615 cmd->bufflen);
4616 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
4617 cmd->offset);
4618
4619 if (cmd->sg_cnt < 0)
4620 BUG();
4621
4622 if (cmd->bufflen < 0)
4623 BUG();
4624
4625 return 0;
5897cb2f 4626#endif
2d70c103
NB		 4627}
4628
4629static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
4630 uint32_t srr_rel_offs, int *xmit_type)
4631{
4632 int res = 0, rel_offs;
4633
4634 rel_offs = srr_rel_offs - cmd->offset;
4635 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
4636 srr_rel_offs, rel_offs);
4637
4638 *xmit_type = QLA_TGT_XMIT_ALL;
4639
4640 if (rel_offs < 0) {
4641 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
4642 "qla_target(%d): SRR rel_offs (%d) < 0",
4643 cmd->vha->vp_idx, rel_offs);
4644 res = -1;
4645 } else if (rel_offs == cmd->bufflen)
4646 *xmit_type = QLA_TGT_XMIT_STATUS;
4647 else if (rel_offs > 0)
4648 res = qlt_set_data_offset(cmd, rel_offs);
4649
4650 return res;
4651}
4652
4653/* No locks, thread context */
4654static void qlt_handle_srr(struct scsi_qla_host *vha,
4655 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
4656{
4657 struct imm_ntfy_from_isp *ntfy =
4658 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
4659 struct qla_hw_data *ha = vha->hw;
4660 struct qla_tgt_cmd *cmd = sctio->cmd;
4661 struct se_cmd *se_cmd = &cmd->se_cmd;
4662 unsigned long flags;
4663 int xmit_type = 0, resp = 0;
4664 uint32_t offset;
4665 uint16_t srr_ui;
4666
4667 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
4668 srr_ui = ntfy->u.isp24.srr_ui;
4669
4670 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
4671 cmd, srr_ui);
4672
4673 switch (srr_ui) {
4674 case SRR_IU_STATUS:
4675 spin_lock_irqsave(&ha->hardware_lock, flags);
4676 qlt_send_notify_ack(vha, ntfy,
4677 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4678 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4679 xmit_type = QLA_TGT_XMIT_STATUS;
4680 resp = 1;
4681 break;
4682 case SRR_IU_DATA_IN:
4683 if (!cmd->sg || !cmd->sg_cnt) {
4684 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
4685 "Unable to process SRR_IU_DATA_IN due to"
4686 " missing cmd->sg, state: %d\n", cmd->state);
4687 dump_stack();
4688 goto out_reject;
4689 }
4690 if (se_cmd->scsi_status != 0) {
4691 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
4692 "Rejecting SRR_IU_DATA_IN with non GOOD "
4693 "scsi_status\n");
4694 goto out_reject;
4695 }
4696 cmd->bufflen = se_cmd->data_length;
4697
4698 if (qlt_has_data(cmd)) {
4699 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
4700 goto out_reject;
4701 spin_lock_irqsave(&ha->hardware_lock, flags);
4702 qlt_send_notify_ack(vha, ntfy,
4703 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4704 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4705 resp = 1;
4706 } else {
4707 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
649ee054
BVA		 4708 "qla_target(%d): SRR for in data for cmd without them (tag %lld, SCSI status %d), reject",
4709 vha->vp_idx, se_cmd->tag,
2d70c103
NB		 4710 cmd->se_cmd.scsi_status);
4711 goto out_reject;
4712 }
4713 break;
4714 case SRR_IU_DATA_OUT:
4715 if (!cmd->sg || !cmd->sg_cnt) {
4716 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
4717 "Unable to process SRR_IU_DATA_OUT due to"
4718 " missing cmd->sg\n");
4719 dump_stack();
4720 goto out_reject;
4721 }
4722 if (se_cmd->scsi_status != 0) {
4723 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
4724 "Rejecting SRR_IU_DATA_OUT"
4725 " with non GOOD scsi_status\n");
4726 goto out_reject;
4727 }
4728 cmd->bufflen = se_cmd->data_length;
4729
4730 if (qlt_has_data(cmd)) {
4731 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
4732 goto out_reject;
4733 spin_lock_irqsave(&ha->hardware_lock, flags);
4734 qlt_send_notify_ack(vha, ntfy,
4735 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4736 spin_unlock_irqrestore(&ha->hardware_lock, flags);
e07f8f65
SK		 4737 if (xmit_type & QLA_TGT_XMIT_DATA) {
4738 cmd->cmd_flags |= BIT_8;
2d70c103 4739 qlt_rdy_to_xfer(cmd);
e07f8f65 4740 }
2d70c103
NB		 4741 } else {
4742 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
649ee054
BVA		 4743 "qla_target(%d): SRR for out data for cmd without them (tag %lld, SCSI status %d), reject",
4744 vha->vp_idx, se_cmd->tag, cmd->se_cmd.scsi_status);
2d70c103
NB		 4745 goto out_reject;
4746 }
4747 break;
4748 default:
4749 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
4750 "qla_target(%d): Unknown srr_ui value %x",
4751 vha->vp_idx, srr_ui);
4752 goto out_reject;
4753 }
4754
4755 /* Transmit response in case of status and data-in cases */
e07f8f65
SK		 4756 if (resp) {
4757 cmd->cmd_flags |= BIT_7;
2d70c103 4758 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
e07f8f65 4759 }
2d70c103
NB		 4760
4761 return;
4762
4763out_reject:
4764 spin_lock_irqsave(&ha->hardware_lock, flags);
4765 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
4766 NOTIFY_ACK_SRR_FLAGS_REJECT,
4767 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4768 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4769 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
4770 cmd->state = QLA_TGT_STATE_DATA_IN;
4771 dump_stack();
e07f8f65
SK		 4772 } else {
4773 cmd->cmd_flags |= BIT_9;
2d70c103 4774 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
e07f8f65 4775 }
2d70c103
NB		 4776 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4777}
4778
4779static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
4780 struct qla_tgt_srr_imm *imm, int ha_locked)
4781{
4782 struct qla_hw_data *ha = vha->hw;
4783 unsigned long flags = 0;
4784
8d16366b 4785#ifndef __CHECKER__
2d70c103
NB		 4786 if (!ha_locked)
4787 spin_lock_irqsave(&ha->hardware_lock, flags);
8d16366b 4788#endif
2d70c103
NB		 4789
4790 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
4791 NOTIFY_ACK_SRR_FLAGS_REJECT,
4792 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4793 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4794
8d16366b 4795#ifndef __CHECKER__
2d70c103
NB		 4796 if (!ha_locked)
4797 spin_unlock_irqrestore(&ha->hardware_lock, flags);
8d16366b 4798#endif
2d70c103
NB		 4799
4800 kfree(imm);
4801}
4802
4803static void qlt_handle_srr_work(struct work_struct *work)
4804{
4805 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
4806 struct scsi_qla_host *vha = tgt->vha;
4807 struct qla_tgt_srr_ctio *sctio;
4808 unsigned long flags;
4809
4810 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
4811 tgt);
4812
4813restart:
4814 spin_lock_irqsave(&tgt->srr_lock, flags);
4815 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
4816 struct qla_tgt_srr_imm *imm, *i, *ti;
4817 struct qla_tgt_cmd *cmd;
4818 struct se_cmd *se_cmd;
4819
4820 imm = NULL;
4821 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
4822 srr_list_entry) {
4823 if (i->srr_id == sctio->srr_id) {
4824 list_del(&i->srr_list_entry);
4825 if (imm) {
4826 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
4827 "qla_target(%d): There must be "
4828 "only one IMM SRR per CTIO SRR "
4829 "(IMM SRR %p, id %d, CTIO %p\n",
4830 vha->vp_idx, i, i->srr_id, sctio);
4831 qlt_reject_free_srr_imm(tgt->vha, i, 0);
4832 } else
4833 imm = i;
4834 }
4835 }
4836
4837 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
4838 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
4839 sctio->srr_id);
4840
4841 if (imm == NULL) {
4842 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
4843 "Not found matching IMM for SRR CTIO (id %d)\n",
4844 sctio->srr_id);
4845 continue;
4846 } else
4847 list_del(&sctio->srr_list_entry);
4848
4849 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4850
4851 cmd = sctio->cmd;
4852 /*
4853 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
4854 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
4855 * logic..
4856 */
4857 cmd->offset = 0;
4858 if (cmd->free_sg) {
4859 kfree(cmd->sg);
4860 cmd->sg = NULL;
4861 cmd->free_sg = 0;
4862 }
4863 se_cmd = &cmd->se_cmd;
4864
4865 cmd->sg_cnt = se_cmd->t_data_nents;
4866 cmd->sg = se_cmd->t_data_sg;
4867
4868 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
649ee054
BVA		 4869 "SRR cmd %p (se_cmd %p, tag %lld, op %x), sg_cnt=%d, offset=%d",
4870 cmd, &cmd->se_cmd, se_cmd->tag, se_cmd->t_task_cdb ?
4871 se_cmd->t_task_cdb[0] : 0, cmd->sg_cnt, cmd->offset);
2d70c103
NB		 4872
4873 qlt_handle_srr(vha, sctio, imm);
4874
4875 kfree(imm);
4876 kfree(sctio);
4877 goto restart;
4878 }
4879 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4880}
4881
4882/* ha->hardware_lock supposed to be held on entry */
4883static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
4884 struct imm_ntfy_from_isp *iocb)
4885{
4886 struct qla_tgt_srr_imm *imm;
0e8cd71c 4887 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4888 struct qla_tgt_srr_ctio *sctio;
4889
4890 tgt->imm_srr_id++;
4891
e07f8f65 4892 ql_log(ql_log_warn, vha, 0xf02d, "qla_target(%d): SRR received\n",
2d70c103
NB		 4893 vha->vp_idx);
4894
4895 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
4896 if (imm != NULL) {
4897 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
4898
4899 /* IRQ is already OFF */
4900 spin_lock(&tgt->srr_lock);
4901 imm->srr_id = tgt->imm_srr_id;
4902 list_add_tail(&imm->srr_list_entry,
4903 &tgt->srr_imm_list);
4904 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
4905 "IMM NTFY SRR %p added (id %d, ui %x)\n",
4906 imm, imm->srr_id, iocb->u.isp24.srr_ui);
4907 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
4908 int found = 0;
4909 list_for_each_entry(sctio, &tgt->srr_ctio_list,
4910 srr_list_entry) {
4911 if (sctio->srr_id == imm->srr_id) {
4912 found = 1;
4913 break;
4914 }
4915 }
4916 if (found) {
4917 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
4918 "Scheduling srr work\n");
4919 schedule_work(&tgt->srr_work);
4920 } else {
4921 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
4922 "qla_target(%d): imm_srr_id "
4923 "== ctio_srr_id (%d), but there is no "
4924 "corresponding SRR CTIO, deleting IMM "
4925 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
4926 imm);
4927 list_del(&imm->srr_list_entry);
4928
4929 kfree(imm);
4930
4931 spin_unlock(&tgt->srr_lock);
4932 goto out_reject;
4933 }
4934 }
4935 spin_unlock(&tgt->srr_lock);
4936 } else {
4937 struct qla_tgt_srr_ctio *ts;
4938
4939 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
4940 "qla_target(%d): Unable to allocate SRR IMM "
4941 "entry, SRR request will be rejected\n", vha->vp_idx);
4942
4943 /* IRQ is already OFF */
4944 spin_lock(&tgt->srr_lock);
4945 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
4946 srr_list_entry) {
4947 if (sctio->srr_id == tgt->imm_srr_id) {
4948 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
4949 "CTIO SRR %p deleted (id %d)\n",
4950 sctio, sctio->srr_id);
4951 list_del(&sctio->srr_list_entry);
4952 qlt_send_term_exchange(vha, sctio->cmd,
4953 &sctio->cmd->atio, 1);
4954 kfree(sctio);
4955 }
4956 }
4957 spin_unlock(&tgt->srr_lock);
4958 goto out_reject;
4959 }
4960
4961 return;
4962
4963out_reject:
4964 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
4965 NOTIFY_ACK_SRR_FLAGS_REJECT,
4966 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4967 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4968}
4969
4970/*
4971 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4972 */
4973static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4974 struct imm_ntfy_from_isp *iocb)
4975{
4976 struct qla_hw_data *ha = vha->hw;
4977 uint32_t add_flags = 0;
4978 int send_notify_ack = 1;
4979 uint16_t status;
4980
4981 status = le16_to_cpu(iocb->u.isp2x.status);
4982 switch (status) {
4983 case IMM_NTFY_LIP_RESET:
4984 {
4985 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4986 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4987 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4988 iocb->u.isp24.status_subcode);
4989
4990 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4991 send_notify_ack = 0;
4992 break;
4993 }
4994
4995 case IMM_NTFY_LIP_LINK_REINIT:
4996 {
0e8cd71c 4997 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4998 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4999 "qla_target(%d): LINK REINIT (loop %#x, "
5000 "subcode %x)\n", vha->vp_idx,
5001 le16_to_cpu(iocb->u.isp24.nport_handle),
5002 iocb->u.isp24.status_subcode);
5003 if (tgt->link_reinit_iocb_pending) {
5004 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
5005 0, 0, 0, 0, 0, 0);
5006 }
5007 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5008 tgt->link_reinit_iocb_pending = 1;
5009 /*
5010 * QLogic requires to wait after LINK REINIT for possible
5011 * PDISC or ADISC ELS commands
5012 */
5013 send_notify_ack = 0;
5014 break;
5015 }
5016
5017 case IMM_NTFY_PORT_LOGOUT:
5018 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5019 "qla_target(%d): Port logout (loop "
5020 "%#x, subcode %x)\n", vha->vp_idx,
5021 le16_to_cpu(iocb->u.isp24.nport_handle),
5022 iocb->u.isp24.status_subcode);
5023
5024 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5025 send_notify_ack = 0;
5026 /* The sessions will be cleared in the callback, if needed */
5027 break;
5028
5029 case IMM_NTFY_GLBL_TPRLO:
5030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5031 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5032 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5033 send_notify_ack = 0;
5034 /* The sessions will be cleared in the callback, if needed */
5035 break;
5036
5037 case IMM_NTFY_PORT_CONFIG:
5038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5039 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5040 status);
5041 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5042 send_notify_ack = 0;
5043 /* The sessions will be cleared in the callback, if needed */
5044 break;
5045
5046 case IMM_NTFY_GLBL_LOGO:
5047 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5048 "qla_target(%d): Link failure detected\n",
5049 vha->vp_idx);
5050 /* I_T nexus loss */
5051 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5052 send_notify_ack = 0;
5053 break;
5054
5055 case IMM_NTFY_IOCB_OVERFLOW:
5056 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5057 "qla_target(%d): Cannot provide requested "
5058 "capability (IOCB overflowed the immediate notify "
5059 "resource count)\n", vha->vp_idx);
5060 break;
5061
5062 case IMM_NTFY_ABORT_TASK:
5063 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5064 "qla_target(%d): Abort Task (S %08x I %#x -> "
5065 "L %#x)\n", vha->vp_idx,
5066 le16_to_cpu(iocb->u.isp2x.seq_id),
5067 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5068 le16_to_cpu(iocb->u.isp2x.lun));
5069 if (qlt_abort_task(vha, iocb) == 0)
5070 send_notify_ack = 0;
5071 break;
5072
5073 case IMM_NTFY_RESOURCE:
5074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5075 "qla_target(%d): Out of resources, host %ld\n",
5076 vha->vp_idx, vha->host_no);
5077 break;
5078
5079 case IMM_NTFY_MSG_RX:
5080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5081 "qla_target(%d): Immediate notify task %x\n",
5082 vha->vp_idx, iocb->u.isp2x.task_flags);
5083 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5084 send_notify_ack = 0;
5085 break;
5086
5087 case IMM_NTFY_ELS:
5088 if (qlt_24xx_handle_els(vha, iocb) == 0)
5089 send_notify_ack = 0;
5090 break;
5091
5092 case IMM_NTFY_SRR:
5093 qlt_prepare_srr_imm(vha, iocb);
5094 send_notify_ack = 0;
5095 break;
5096
5097 default:
5098 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5099 "qla_target(%d): Received unknown immediate "
5100 "notify status %x\n", vha->vp_idx, status);
5101 break;
5102 }
5103
5104 if (send_notify_ack)
5105 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
5106}
5107
5108/*
5109 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5110 * This function sends busy to ISP 2xxx or 24xx.
5111 */
33e79977 5112static int __qlt_send_busy(struct scsi_qla_host *vha,
2d70c103
NB		 5113 struct atio_from_isp *atio, uint16_t status)
5114{
5115 struct ctio7_to_24xx *ctio24;
5116 struct qla_hw_data *ha = vha->hw;
5117 request_t *pkt;
5118 struct qla_tgt_sess *sess = NULL;
7560151b 5119 unsigned long flags;
2d70c103 5120
7560151b 5121 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5122 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5123 atio->u.isp24.fcp_hdr.s_id);
7560151b 5124 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5125 if (!sess) {
5126 qlt_send_term_exchange(vha, NULL, atio, 1);
33e79977 5127 return 0;
2d70c103
NB		 5128 }
5129 /* Sending marker isn't necessary, since we called from ISR */
5130
5131 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
5132 if (!pkt) {
667024a3 5133 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5134 "qla_target(%d): %s failed: unable to allocate "
5135 "request packet", vha->vp_idx, __func__);
33e79977 5136 return -ENOMEM;
2d70c103
NB		 5137 }
5138
ce1025cd 5139 vha->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5140 pkt->entry_count = 1;
5141 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5142
5143 ctio24 = (struct ctio7_to_24xx *)pkt;
5144 ctio24->entry_type = CTIO_TYPE7;
5145 ctio24->nport_handle = sess->loop_id;
ad950360 5146 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5147 ctio24->vp_index = vha->vp_idx;
5148 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5149 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5150 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5151 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5152 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 5153 cpu_to_le16(
2d70c103
NB		 5154 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5155 CTIO7_FLAGS_DONT_RET_CTIO);
5156 /*
5157 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5158 * if the explicit conformation is used.
5159 */
5160 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5161 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5162 /* Memory Barrier */
5163 wmb();
2d70c103 5164 qla2x00_start_iocbs(vha, vha->req);
33e79977
QT		 5165 return 0;
5166}
5167
5168/*
5169 * This routine is used to allocate a command for either a QFull condition
5170 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5171 * out previously.
5172 */
5173static void
5174qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5175 struct atio_from_isp *atio, uint16_t status, int qfull)
5176{
5177 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5178 struct qla_hw_data *ha = vha->hw;
5179 struct qla_tgt_sess *sess;
5180 struct se_session *se_sess;
5181 struct qla_tgt_cmd *cmd;
5182 int tag;
5183
5184 if (unlikely(tgt->tgt_stop)) {
5185 ql_dbg(ql_dbg_io, vha, 0x300a,
5186 "New command while device %p is shutting down\n", tgt);
5187 return;
5188 }
5189
5190 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5191 vha->hw->tgt.num_qfull_cmds_dropped++;
5192 if (vha->hw->tgt.num_qfull_cmds_dropped >
5193 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
5194 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
5195 vha->hw->tgt.num_qfull_cmds_dropped;
5196
5197 ql_dbg(ql_dbg_io, vha, 0x3068,
5198 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5199 vha->vp_idx, __func__,
5200 vha->hw->tgt.num_qfull_cmds_dropped);
5201
5202 qlt_chk_exch_leak_thresh_hold(vha);
5203 return;
5204 }
5205
5206 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5207 (vha, atio->u.isp24.fcp_hdr.s_id);
5208 if (!sess)
5209 return;
5210
5211 se_sess = sess->se_sess;
5212
5213 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5214 if (tag < 0)
5215 return;
5216
5217 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5218 if (!cmd) {
5219 ql_dbg(ql_dbg_io, vha, 0x3009,
5220 "qla_target(%d): %s: Allocation of cmd failed\n",
5221 vha->vp_idx, __func__);
5222
5223 vha->hw->tgt.num_qfull_cmds_dropped++;
5224 if (vha->hw->tgt.num_qfull_cmds_dropped >
5225 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
5226 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
5227 vha->hw->tgt.num_qfull_cmds_dropped;
5228
5229 qlt_chk_exch_leak_thresh_hold(vha);
5230 return;
5231 }
5232
5233 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5234
5235 qlt_incr_num_pend_cmds(vha);
5236 INIT_LIST_HEAD(&cmd->cmd_list);
5237 memcpy(&cmd->atio, atio, sizeof(*atio));
5238
5239 cmd->tgt = vha->vha_tgt.qla_tgt;
5240 cmd->vha = vha;
5241 cmd->reset_count = vha->hw->chip_reset;
5242 cmd->q_full = 1;
5243
5244 if (qfull) {
5245 cmd->q_full = 1;
5246 /* NOTE: borrowing the state field to carry the status */
5247 cmd->state = status;
5248 } else
5249 cmd->term_exchg = 1;
5250
5251 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5252
5253 vha->hw->tgt.num_qfull_cmds_alloc++;
5254 if (vha->hw->tgt.num_qfull_cmds_alloc >
5255 vha->hw->qla_stats.stat_max_qfull_cmds_alloc)
5256 vha->hw->qla_stats.stat_max_qfull_cmds_alloc =
5257 vha->hw->tgt.num_qfull_cmds_alloc;
5258}
5259
5260int
5261qlt_free_qfull_cmds(struct scsi_qla_host *vha)
5262{
5263 struct qla_hw_data *ha = vha->hw;
5264 unsigned long flags;
5265 struct qla_tgt_cmd *cmd, *tcmd;
5266 struct list_head free_list;
5267 int rc = 0;
5268
5269 if (list_empty(&ha->tgt.q_full_list))
5270 return 0;
5271
5272 INIT_LIST_HEAD(&free_list);
5273
5274 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
5275
5276 if (list_empty(&ha->tgt.q_full_list)) {
5277 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5278 return 0;
5279 }
5280
5281 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
5282 if (cmd->q_full)
5283 /* cmd->state is a borrowed field to hold status */
5284 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
5285 else if (cmd->term_exchg)
5286 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
5287
5288 if (rc == -ENOMEM)
5289 break;
5290
5291 if (cmd->q_full)
5292 ql_dbg(ql_dbg_io, vha, 0x3006,
5293 "%s: busy sent for ox_id[%04x]\n", __func__,
5294 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5295 else if (cmd->term_exchg)
5296 ql_dbg(ql_dbg_io, vha, 0x3007,
5297 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5298 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5299 else
5300 ql_dbg(ql_dbg_io, vha, 0x3008,
5301 "%s: Unexpected cmd in QFull list %p\n", __func__,
5302 cmd);
5303
5304 list_del(&cmd->cmd_list);
5305 list_add_tail(&cmd->cmd_list, &free_list);
5306
5307 /* piggy back on hardware_lock for protection */
5308 vha->hw->tgt.num_qfull_cmds_alloc--;
5309 }
5310 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5311
5312 cmd = NULL;
5313
5314 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5315 list_del(&cmd->cmd_list);
5316 /* This cmd was never sent to TCM. There is no need
5317 * to schedule free or call free_cmd
5318 */
5319 qlt_free_cmd(cmd);
5320 }
5321 return rc;
5322}
5323
5324static void
5325qlt_send_busy(struct scsi_qla_host *vha,
5326 struct atio_from_isp *atio, uint16_t status)
5327{
5328 int rc = 0;
5329
5330 rc = __qlt_send_busy(vha, atio, status);
5331 if (rc == -ENOMEM)
5332 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5333}
5334
5335static int
5336qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
5337 struct atio_from_isp *atio)
5338{
5339 struct qla_hw_data *ha = vha->hw;
5340 uint16_t status;
5341
5342 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5343 return 0;
5344
5345 status = temp_sam_status;
5346 qlt_send_busy(vha, atio, status);
5347 return 1;
2d70c103
NB		 5348}
5349
5350/* ha->hardware_lock supposed to be held on entry */
5351/* called via callback from qla2xxx */
5352static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5353 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5354{
5355 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5356 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5357 int rc;
2f424b9b 5358 unsigned long flags;
2d70c103
NB		 5359
5360 if (unlikely(tgt == NULL)) {
667024a3 5361 ql_dbg(ql_dbg_io, vha, 0x3064,
2d70c103
NB		 5362 "ATIO pkt, but no tgt (ha %p)", ha);
5363 return;
5364 }
2d70c103
NB		 5365 /*
5366 * In tgt_stop mode we also should allow all requests to pass.
5367 * Otherwise, some commands can stuck.
5368 */
5369
2f424b9b 5370 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5371
5372 switch (atio->u.raw.entry_type) {
5373 case ATIO_TYPE7:
2d70c103
NB		 5374 if (unlikely(atio->u.isp24.exchange_addr ==
5375 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5376 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5377 "qla_target(%d): ATIO_TYPE7 "
5378 "received with UNKNOWN exchange address, "
5379 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5380 if (!ha_locked)
5381 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5382 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
2f424b9b
QT		 5383 if (!ha_locked)
5384 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5385 break;
5386 }
33e79977
QT		 5387
5388
5389
5390 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5391 rc = qlt_chk_qfull_thresh_hold(vha, atio);
5392 if (rc != 0) {
2f424b9b 5393 tgt->atio_irq_cmd_count--;
33e79977
QT		 5394 return;
5395 }
2d70c103 5396 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5397 } else {
2d70c103 5398 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5399 }
2d70c103
NB		 5400 if (unlikely(rc != 0)) {
5401 if (rc == -ESRCH) {
2f424b9b
QT		 5402 if (!ha_locked)
5403 spin_lock_irqsave
5404 (&ha->hardware_lock, flags);
5405
2d70c103
NB		 5406#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5407 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5408#else
5409 qlt_send_term_exchange(vha, NULL, atio, 1);
5410#endif
2f424b9b
QT		 5411
5412 if (!ha_locked)
5413 spin_unlock_irqrestore
5414 (&ha->hardware_lock, flags);
5415
2d70c103
NB		 5416 } else {
5417 if (tgt->tgt_stop) {
5418 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5419 "qla_target: Unable to send "
5420 "command to target for req, "
5421 "ignoring.\n");
5422 } else {
5423 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5424 "qla_target(%d): Unable to send "
5425 "command to target, sending BUSY "
5426 "status.\n", vha->vp_idx);
2f424b9b
QT		 5427 if (!ha_locked)
5428 spin_lock_irqsave(
5429 &ha->hardware_lock, flags);
2d70c103 5430 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
2f424b9b
QT		 5431 if (!ha_locked)
5432 spin_unlock_irqrestore(
5433 &ha->hardware_lock, flags);
2d70c103
NB		 5434 }
5435 }
5436 }
5437 break;
5438
5439 case IMMED_NOTIFY_TYPE:
5440 {
5441 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5442 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5443 "qla_target(%d): Received ATIO packet %x "
5444 "with error status %x\n", vha->vp_idx,
5445 atio->u.raw.entry_type,
5446 atio->u.isp2x.entry_status);
5447 break;
5448 }
5449 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5450
5451 if (!ha_locked)
5452 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5453 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5454 if (!ha_locked)
5455 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5456 break;
5457 }
5458
5459 default:
5460 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5461 "qla_target(%d): Received unknown ATIO atio "
5462 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5463 break;
5464 }
5465
2f424b9b 5466 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5467}
5468
5469/* ha->hardware_lock supposed to be held on entry */
5470/* called via callback from qla2xxx */
5471static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
5472{
5473 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5474 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5475
5476 if (unlikely(tgt == NULL)) {
5477 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5478 "qla_target(%d): Response pkt %x received, but no "
5479 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
5480 return;
5481 }
5482
2d70c103
NB		 5483 /*
5484 * In tgt_stop mode we also should allow all requests to pass.
5485 * Otherwise, some commands can stuck.
5486 */
5487
5488 tgt->irq_cmd_count++;
5489
5490 switch (pkt->entry_type) {
f83adb61 5491 case CTIO_CRC2:
2d70c103
NB		 5492 case CTIO_TYPE7:
5493 {
5494 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
2d70c103
NB		 5495 qlt_do_ctio_completion(vha, entry->handle,
5496 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5497 entry);
5498 break;
5499 }
5500
5501 case ACCEPT_TGT_IO_TYPE:
5502 {
5503 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5504 int rc;
2d70c103 5505 if (atio->u.isp2x.status !=
ad950360 5506 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5507 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5508 "qla_target(%d): ATIO with error "
5509 "status %x received\n", vha->vp_idx,
5510 le16_to_cpu(atio->u.isp2x.status));
5511 break;
5512 }
2d70c103 5513
33e79977
QT		 5514 rc = qlt_chk_qfull_thresh_hold(vha, atio);
5515 if (rc != 0) {
5516 tgt->irq_cmd_count--;
5517 return;
5518 }
5519
2d70c103
NB		 5520 rc = qlt_handle_cmd_for_atio(vha, atio);
5521 if (unlikely(rc != 0)) {
5522 if (rc == -ESRCH) {
5523#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5524 qlt_send_busy(vha, atio, 0);
5525#else
5526 qlt_send_term_exchange(vha, NULL, atio, 1);
5527#endif
5528 } else {
5529 if (tgt->tgt_stop) {
5530 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5531 "qla_target: Unable to send "
5532 "command to target, sending TERM "
5533 "EXCHANGE for rsp\n");
5534 qlt_send_term_exchange(vha, NULL,
5535 atio, 1);
5536 } else {
5537 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5538 "qla_target(%d): Unable to send "
5539 "command to target, sending BUSY "
5540 "status\n", vha->vp_idx);
5541 qlt_send_busy(vha, atio, 0);
5542 }
5543 }
5544 }
5545 }
5546 break;
5547
5548 case CONTINUE_TGT_IO_TYPE:
5549 {
5550 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5551 qlt_do_ctio_completion(vha, entry->handle,
5552 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5553 entry);
5554 break;
5555 }
5556
5557 case CTIO_A64_TYPE:
5558 {
5559 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5560 qlt_do_ctio_completion(vha, entry->handle,
5561 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5562 entry);
5563 break;
5564 }
5565
5566 case IMMED_NOTIFY_TYPE:
5567 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5568 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5569 break;
5570
5571 case NOTIFY_ACK_TYPE:
5572 if (tgt->notify_ack_expected > 0) {
5573 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5574 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5575 "NOTIFY_ACK seq %08x status %x\n",
5576 le16_to_cpu(entry->u.isp2x.seq_id),
5577 le16_to_cpu(entry->u.isp2x.status));
5578 tgt->notify_ack_expected--;
5579 if (entry->u.isp2x.status !=
ad950360 5580 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5581 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5582 "qla_target(%d): NOTIFY_ACK "
5583 "failed %x\n", vha->vp_idx,
5584 le16_to_cpu(entry->u.isp2x.status));
5585 }
5586 } else {
5587 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5588 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5589 vha->vp_idx);
5590 }
5591 break;
5592
5593 case ABTS_RECV_24XX:
5594 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5595 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5596 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5597 break;
5598
5599 case ABTS_RESP_24XX:
5600 if (tgt->abts_resp_expected > 0) {
5601 struct abts_resp_from_24xx_fw *entry =
5602 (struct abts_resp_from_24xx_fw *)pkt;
5603 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5604 "ABTS_RESP_24XX: compl_status %x\n",
5605 entry->compl_status);
5606 tgt->abts_resp_expected--;
5607 if (le16_to_cpu(entry->compl_status) !=
5608 ABTS_RESP_COMPL_SUCCESS) {
5609 if ((entry->error_subcode1 == 0x1E) &&
5610 (entry->error_subcode2 == 0)) {
5611 /*
5612 * We've got a race here: aborted
5613 * exchange not terminated, i.e.
5614 * response for the aborted command was
5615 * sent between the abort request was
5616 * received and processed.
5617 * Unfortunately, the firmware has a
5618 * silly requirement that all aborted
5619 * exchanges must be explicitely
5620 * terminated, otherwise it refuses to
5621 * send responses for the abort
5622 * requests. So, we have to
5623 * (re)terminate the exchange and retry
5624 * the abort response.
5625 */
5626 qlt_24xx_retry_term_exchange(vha,
5627 entry);
5628 } else
5629 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5630 "qla_target(%d): ABTS_RESP_24XX "
5631 "failed %x (subcode %x:%x)",
5632 vha->vp_idx, entry->compl_status,
5633 entry->error_subcode1,
5634 entry->error_subcode2);
5635 }
5636 } else {
5637 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5638 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5639 "received\n", vha->vp_idx);
5640 }
5641 break;
5642
5643 default:
5644 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5645 "qla_target(%d): Received unknown response pkt "
5646 "type %x\n", vha->vp_idx, pkt->entry_type);
5647 break;
5648 }
5649
5650 tgt->irq_cmd_count--;
5651}
5652
5653/*
5654 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5655 */
5656void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5657 uint16_t *mailbox)
5658{
5659 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5660 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5661 int login_code;
2d70c103 5662
2d70c103
NB		 5663 if (!ha->tgt.tgt_ops)
5664 return;
5665
5666 if (unlikely(tgt == NULL)) {
5667 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
5668 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
5669 return;
5670 }
5671
5672 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5673 IS_QLA2100(ha))
5674 return;
5675 /*
5676 * In tgt_stop mode we also should allow all requests to pass.
5677 * Otherwise, some commands can stuck.
5678 */
5679
5680 tgt->irq_cmd_count++;
5681
5682 switch (code) {
5683 case MBA_RESET: /* Reset */
5684 case MBA_SYSTEM_ERR: /* System Error */
5685 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5686 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5687 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5688 "qla_target(%d): System error async event %#x "
6efb3c0a 5689 "occurred", vha->vp_idx, code);
2d70c103
NB		 5690 break;
5691 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5692 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5693 break;
5694
5695 case MBA_LOOP_UP:
5696 {
5697 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5698 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5699 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5700 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5701 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5702 if (tgt->link_reinit_iocb_pending) {
5703 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
5704 0, 0, 0, 0, 0, 0);
5705 tgt->link_reinit_iocb_pending = 0;
5706 }
5707 break;
5708 }
5709
5710 case MBA_LIP_OCCURRED:
5711 case MBA_LOOP_DOWN:
5712 case MBA_LIP_RESET:
5713 case MBA_RSCN_UPDATE:
5714 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5715 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5716 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5717 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5718 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5719 break;
5720
5721 case MBA_PORT_UPDATE:
5722 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5723 "qla_target(%d): Port update async event %#x "
6efb3c0a 5724 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5725 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5726 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5727 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5728
5729 login_code = le16_to_cpu(mailbox[2]);
5730 if (login_code == 0x4)
2d70c103
NB		 5731 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5732 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 5733 else if (login_code == 0x7)
2d70c103
NB		 5734 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5735 "Async MB 2: Port Logged Out\n");
5736 break;
5737
5738 default:
2d70c103
NB		 5739 break;
5740 }
5741
5742 tgt->irq_cmd_count--;
5743}
5744
5745static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5746 uint16_t loop_id)
5747{
5748 fc_port_t *fcport;
5749 int rc;
5750
5751 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
5752 if (!fcport) {
5753 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5754 "qla_target(%d): Allocation of tmp FC port failed",
5755 vha->vp_idx);
5756 return NULL;
5757 }
5758
2d70c103
NB		 5759 fcport->loop_id = loop_id;
5760
5761 rc = qla2x00_get_port_database(vha, fcport, 0);
5762 if (rc != QLA_SUCCESS) {
5763 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5764 "qla_target(%d): Failed to retrieve fcport "
5765 "information -- get_port_database() returned %x "
5766 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5767 kfree(fcport);
5768 return NULL;
5769 }
5770
5771 return fcport;
5772}
5773
5774/* Must be called under tgt_mutex */
5775static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
5776 uint8_t *s_id)
5777{
2d70c103
NB		 5778 struct qla_tgt_sess *sess = NULL;
5779 fc_port_t *fcport = NULL;
5780 int rc, global_resets;
5781 uint16_t loop_id = 0;
5782
71cdc079
AP		 5783 mutex_lock(&vha->vha_tgt.tgt_mutex);
5784
2d70c103 5785retry:
0e8cd71c
SK		 5786 global_resets =
5787 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5788
5789 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5790 if (rc != 0) {
71cdc079
AP		 5791 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5792
2d70c103
NB		 5793 if ((s_id[0] == 0xFF) &&
5794 (s_id[1] == 0xFC)) {
5795 /*
5796 * This is Domain Controller, so it should be
5797 * OK to drop SCSI commands from it.
5798 */
5799 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5800 "Unable to find initiator with S_ID %x:%x:%x",
5801 s_id[0], s_id[1], s_id[2]);
5802 } else
71cdc079 5803 ql_log(ql_log_info, vha, 0xf071,
2d70c103
NB		 5804 "qla_target(%d): Unable to find "
5805 "initiator with S_ID %x:%x:%x",
5806 vha->vp_idx, s_id[0], s_id[1],
5807 s_id[2]);
71cdc079
AP		 5808
5809 if (rc == -ENOENT) {
5810 qlt_port_logo_t logo;
5811 sid_to_portid(s_id, &logo.id);
5812 logo.cmd_count = 1;
5813 qlt_send_first_logo(vha, &logo);
5814 }
5815
2d70c103
NB		 5816 return NULL;
5817 }
5818
5819 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5820 if (!fcport) {
5821 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5822 return NULL;
71cdc079 5823 }
2d70c103
NB		 5824
5825 if (global_resets !=
0e8cd71c 5826 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5827 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5828 "qla_target(%d): global reset during session discovery "
5829 "(counter was %d, new %d), retrying", vha->vp_idx,
5830 global_resets,
0e8cd71c
SK		 5831 atomic_read(&vha->vha_tgt.
5832 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5833 goto retry;
5834 }
5835
5836 sess = qlt_create_sess(vha, fcport, true);
5837
71cdc079
AP		 5838 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5839
2d70c103
NB		 5840 kfree(fcport);
5841 return sess;
5842}
5843
5844static void qlt_abort_work(struct qla_tgt *tgt,
5845 struct qla_tgt_sess_work_param *prm)
5846{
5847 struct scsi_qla_host *vha = tgt->vha;
5848 struct qla_hw_data *ha = vha->hw;
5849 struct qla_tgt_sess *sess = NULL;
7560151b 5850 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5851 uint32_t be_s_id;
5852 uint8_t s_id[3];
5853 int rc;
5854
7560151b 5855 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5856
5857 if (tgt->tgt_stop)
7560151b 5858 goto out_term2;
2d70c103
NB		 5859
5860 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5861 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5862 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5863
5864 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5865 (unsigned char *)&be_s_id);
5866 if (!sess) {
7560151b 5867 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 5868
2d70c103
NB		 5869 sess = qlt_make_local_sess(vha, s_id);
5870 /* sess has got an extra creation ref */
2d70c103 5871
7560151b 5872 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 5873 if (!sess)
7560151b 5874 goto out_term2;
2d70c103 5875 } else {
e52a8b45
AP		 5876 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
5877 sess = NULL;
7560151b 5878 goto out_term2;
e52a8b45
AP		 5879 }
5880
2d70c103
NB		 5881 kref_get(&sess->se_sess->sess_kref);
5882 }
5883
7560151b
QT		 5884 spin_lock_irqsave(&ha->hardware_lock, flags);
5885
2d70c103
NB		 5886 if (tgt->tgt_stop)
5887 goto out_term;
5888
5889 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
5890 if (rc != 0)
5891 goto out_term;
7560151b 5892 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5893
5894 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5895 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5896 return;
5897
7560151b
QT		 5898out_term2:
5899 spin_lock_irqsave(&ha->hardware_lock, flags);
5900
2d70c103
NB		 5901out_term:
5902 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
7560151b
QT		 5903 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5904
2d70c103
NB		 5905 if (sess)
5906 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5907 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5908}
5909
5910static void qlt_tmr_work(struct qla_tgt *tgt,
5911 struct qla_tgt_sess_work_param *prm)
5912{
5913 struct atio_from_isp *a = &prm->tm_iocb2;
5914 struct scsi_qla_host *vha = tgt->vha;
5915 struct qla_hw_data *ha = vha->hw;
5916 struct qla_tgt_sess *sess = NULL;
5917 unsigned long flags;
5918 uint8_t *s_id = NULL; /* to hide compiler warnings */
5919 int rc;
5920 uint32_t lun, unpacked_lun;
52c82823 5921 int fn;
2d70c103
NB		 5922 void *iocb;
5923
7560151b 5924 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5925
5926 if (tgt->tgt_stop)
5927 goto out_term;
5928
5929 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5930 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5931 if (!sess) {
7560151b 5932 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5933
2d70c103
NB		 5934 sess = qlt_make_local_sess(vha, s_id);
5935 /* sess has got an extra creation ref */
2d70c103 5936
7560151b 5937 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5938 if (!sess)
5939 goto out_term;
5940 } else {
e52a8b45
AP		 5941 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
5942 sess = NULL;
5943 goto out_term;
5944 }
5945
2d70c103
NB		 5946 kref_get(&sess->se_sess->sess_kref);
5947 }
5948
5949 iocb = a;
5950 lun = a->u.isp24.fcp_cmnd.lun;
2d70c103
NB		 5951 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
5952 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
5953
5954 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5955 if (rc != 0)
5956 goto out_term;
2d70c103
NB		 5957
5958 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5959 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5960 return;
5961
5962out_term:
7560151b 5963 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 0);
2d70c103
NB		 5964 if (sess)
5965 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5966 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5967}
5968
5969static void qlt_sess_work_fn(struct work_struct *work)
5970{
5971 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
5972 struct scsi_qla_host *vha = tgt->vha;
5973 unsigned long flags;
5974
5975 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
5976
5977 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5978 while (!list_empty(&tgt->sess_works_list)) {
5979 struct qla_tgt_sess_work_param *prm = list_entry(
5980 tgt->sess_works_list.next, typeof(*prm),
5981 sess_works_list_entry);
5982
5983 /*
5984 * This work can be scheduled on several CPUs at time, so we
5985 * must delete the entry to eliminate double processing
5986 */
5987 list_del(&prm->sess_works_list_entry);
5988
5989 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5990
5991 switch (prm->type) {
5992 case QLA_TGT_SESS_WORK_ABORT:
5993 qlt_abort_work(tgt, prm);
5994 break;
5995 case QLA_TGT_SESS_WORK_TM:
5996 qlt_tmr_work(tgt, prm);
5997 break;
5998 default:
5999 BUG_ON(1);
6000 break;
6001 }
6002
6003 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6004
6005 kfree(prm);
6006 }
6007 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6008}
6009
6010/* Must be called under tgt_host_action_mutex */
6011int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6012{
6013 struct qla_tgt *tgt;
6014
6015 if (!QLA_TGT_MODE_ENABLED())
6016 return 0;
6017
33c36c0a
AE		 6018 if (!IS_TGT_MODE_CAPABLE(ha)) {
6019 ql_log(ql_log_warn, base_vha, 0xe070,
6020 "This adapter does not support target mode.\n");
6021 return 0;
6022 }
6023
2d70c103 6024 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6025 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6026
0e8cd71c 6027 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6028
6029 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6030 if (!tgt) {
6031 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6032 "Unable to allocate struct qla_tgt\n");
6033 return -ENOMEM;
6034 }
6035
6036 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6037 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6038
6039 tgt->ha = ha;
6040 tgt->vha = base_vha;
6041 init_waitqueue_head(&tgt->waitQ);
6042 INIT_LIST_HEAD(&tgt->sess_list);
6043 INIT_LIST_HEAD(&tgt->del_sess_list);
6044 INIT_DELAYED_WORK(&tgt->sess_del_work,
6045 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
6046 spin_lock_init(&tgt->sess_work_lock);
6047 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6048 INIT_LIST_HEAD(&tgt->sess_works_list);
6049 spin_lock_init(&tgt->srr_lock);
6050 INIT_LIST_HEAD(&tgt->srr_ctio_list);
6051 INIT_LIST_HEAD(&tgt->srr_imm_list);
6052 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
6053 atomic_set(&tgt->tgt_global_resets_count, 0);
6054
0e8cd71c 6055 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6056
6057 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6058 "qla_target(%d): using 64 Bit PCI addressing",
6059 base_vha->vp_idx);
6060 tgt->tgt_enable_64bit_addr = 1;
6061 /* 3 is reserved */
6062 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6063 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
6064 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
6065
ddb95145
NB		 6066 if (base_vha->fc_vport)
6067 return 0;
6068
2d70c103
NB		 6069 mutex_lock(&qla_tgt_mutex);
6070 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6071 mutex_unlock(&qla_tgt_mutex);
6072
6073 return 0;
6074}
6075
6076/* Must be called under tgt_host_action_mutex */
6077int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6078{
0e8cd71c 6079 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6080 return 0;
6081
ddb95145
NB		 6082 if (vha->fc_vport) {
6083 qlt_release(vha->vha_tgt.qla_tgt);
6084 return 0;
6085 }
33e79977
QT		 6086
6087 /* free left over qfull cmds */
6088 qlt_init_term_exchange(vha);
6089
2d70c103 6090 mutex_lock(&qla_tgt_mutex);
0e8cd71c 6091 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 6092 mutex_unlock(&qla_tgt_mutex);
6093
6094 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6095 vha->host_no, ha);
0e8cd71c 6096 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6097
6098 return 0;
6099}
6100
6101static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6102 unsigned char *b)
6103{
6104 int i;
6105
6106 pr_debug("qla2xxx HW vha->node_name: ");
6107 for (i = 0; i < WWN_SIZE; i++)
6108 pr_debug("%02x ", vha->node_name[i]);
6109 pr_debug("\n");
6110 pr_debug("qla2xxx HW vha->port_name: ");
6111 for (i = 0; i < WWN_SIZE; i++)
6112 pr_debug("%02x ", vha->port_name[i]);
6113 pr_debug("\n");
6114
6115 pr_debug("qla2xxx passed configfs WWPN: ");
6116 put_unaligned_be64(wwpn, b);
6117 for (i = 0; i < WWN_SIZE; i++)
6118 pr_debug("%02x ", b[i]);
6119 pr_debug("\n");
6120}
6121
6122/**
6123 * qla_tgt_lport_register - register lport with external module
6124 *
6125 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6126 * @wwpn: Passwd FC target WWPN
6127 * @callback: lport initialization callback for tcm_qla2xxx code
6128 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6129 */
49a47f2c
NB		 6130int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6131 u64 npiv_wwpn, u64 npiv_wwnn,
6132 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6133{
6134 struct qla_tgt *tgt;
6135 struct scsi_qla_host *vha;
6136 struct qla_hw_data *ha;
6137 struct Scsi_Host *host;
6138 unsigned long flags;
6139 int rc;
6140 u8 b[WWN_SIZE];
6141
6142 mutex_lock(&qla_tgt_mutex);
6143 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6144 vha = tgt->vha;
6145 ha = vha->hw;
6146
6147 host = vha->host;
6148 if (!host)
6149 continue;
6150
2d70c103
NB		 6151 if (!(host->hostt->supported_mode & MODE_TARGET))
6152 continue;
6153
6154 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6155 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6156 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6157 host->host_no);
6158 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6159 continue;
6160 }
ddb95145
NB		 6161 if (tgt->tgt_stop) {
6162 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6163 host->host_no);
6164 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6165 continue;
6166 }
2d70c103
NB		 6167 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6168
6169 if (!scsi_host_get(host)) {
6170 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6171 "Unable to scsi_host_get() for"
6172 " qla2xxx scsi_host\n");
6173 continue;
6174 }
49a47f2c 6175 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6176
6177 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6178 scsi_host_put(host);
6179 continue;
6180 }
49a47f2c
NB		 6181 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6182 if (rc != 0)
6183 scsi_host_put(host);
6184
ddb95145 6185 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6186 return rc;
6187 }
6188 mutex_unlock(&qla_tgt_mutex);
6189
6190 return -ENODEV;
6191}
6192EXPORT_SYMBOL(qlt_lport_register);
6193
6194/**
6195 * qla_tgt_lport_deregister - Degister lport
6196 *
6197 * @vha: Registered scsi_qla_host pointer
6198 */
6199void qlt_lport_deregister(struct scsi_qla_host *vha)
6200{
6201 struct qla_hw_data *ha = vha->hw;
6202 struct Scsi_Host *sh = vha->host;
6203 /*
6204 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6205 */
0e8cd71c 6206 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6207 ha->tgt.tgt_ops = NULL;
6208 /*
6209 * Release the Scsi_Host reference for the underlying qla2xxx host
6210 */
6211 scsi_host_put(sh);
6212}
6213EXPORT_SYMBOL(qlt_lport_deregister);
6214
6215/* Must be called under HW lock */
55a9066f 6216static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103
NB		 6217{
6218 struct qla_hw_data *ha = vha->hw;
6219
6220 switch (ql2x_ini_mode) {
6221 case QLA2XXX_INI_MODE_DISABLED:
6222 case QLA2XXX_INI_MODE_EXCLUSIVE:
6223 vha->host->active_mode = MODE_TARGET;
6224 break;
6225 case QLA2XXX_INI_MODE_ENABLED:
6226 vha->host->active_mode |= MODE_TARGET;
6227 break;
6228 default:
6229 break;
6230 }
6231
6232 if (ha->tgt.ini_mode_force_reverse)
6233 qla_reverse_ini_mode(vha);
6234}
6235
6236/* Must be called under HW lock */
55a9066f 6237static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103
NB		 6238{
6239 struct qla_hw_data *ha = vha->hw;
6240
6241 switch (ql2x_ini_mode) {
6242 case QLA2XXX_INI_MODE_DISABLED:
6243 vha->host->active_mode = MODE_UNKNOWN;
6244 break;
6245 case QLA2XXX_INI_MODE_EXCLUSIVE:
6246 vha->host->active_mode = MODE_INITIATOR;
6247 break;
6248 case QLA2XXX_INI_MODE_ENABLED:
6249 vha->host->active_mode &= ~MODE_TARGET;
6250 break;
6251 default:
6252 break;
6253 }
6254
6255 if (ha->tgt.ini_mode_force_reverse)
6256 qla_reverse_ini_mode(vha);
6257}
6258
6259/*
6260 * qla_tgt_enable_vha - NO LOCK HELD
6261 *
6262 * host_reset, bring up w/ Target Mode Enabled
6263 */
6264void
6265qlt_enable_vha(struct scsi_qla_host *vha)
6266{
6267 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6268 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6269 unsigned long flags;
0e8cd71c 6270 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
cdb898c5 6271 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER;
2d70c103
NB		 6272
6273 if (!tgt) {
6274 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6275 "Unable to locate qla_tgt pointer from"
6276 " struct qla_hw_data\n");
6277 dump_stack();
6278 return;
6279 }
6280
6281 spin_lock_irqsave(&ha->hardware_lock, flags);
6282 tgt->tgt_stopped = 0;
6283 qlt_set_mode(vha);
6284 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6285
0e8cd71c
SK		 6286 if (vha->vp_idx) {
6287 qla24xx_disable_vp(vha);
6288 qla24xx_enable_vp(vha);
6289 } else {
cdb898c5
QT		 6290 if (ha->msix_entries) {
6291 ql_dbg(ql_dbg_tgt, vha, 0xffff,
6292 "%s: host%ld : vector %d cpu %d\n",
6293 __func__, vha->host_no,
6294 ha->msix_entries[rspq_ent].vector,
6295 ha->msix_entries[rspq_ent].cpuid);
6296
6297 ha->tgt.rspq_vector_cpuid =
6298 ha->msix_entries[rspq_ent].cpuid;
6299 }
6300
0e8cd71c
SK		 6301 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6302 qla2xxx_wake_dpc(base_vha);
6303 qla2x00_wait_for_hba_online(base_vha);
6304 }
2d70c103
NB		 6305}
6306EXPORT_SYMBOL(qlt_enable_vha);
6307
6308/*
6309 * qla_tgt_disable_vha - NO LOCK HELD
6310 *
6311 * Disable Target Mode and reset the adapter
6312 */
55a9066f 6313static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6314{
6315 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6316 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6317 unsigned long flags;
6318
6319 if (!tgt) {
6320 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6321 "Unable to locate qla_tgt pointer from"
6322 " struct qla_hw_data\n");
6323 dump_stack();
6324 return;
6325 }
6326
6327 spin_lock_irqsave(&ha->hardware_lock, flags);
6328 qlt_clear_mode(vha);
6329 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6330
6331 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6332 qla2xxx_wake_dpc(vha);
6333 qla2x00_wait_for_hba_online(vha);
6334}
6335
6336/*
6337 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6338 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6339 * members.
6340 */
6341void
6342qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6343{
6344 if (!qla_tgt_mode_enabled(vha))
6345 return;
6346
0e8cd71c
SK		 6347 vha->vha_tgt.qla_tgt = NULL;
6348
6349 mutex_init(&vha->vha_tgt.tgt_mutex);
6350 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6351
6352 qlt_clear_mode(vha);
6353
6354 /*
6355 * NOTE: Currently the value is kept the same for <24xx and
6356 * >=24xx ISPs. If it is necessary to change it,
6357 * the check should be added for specific ISPs,
6358 * assigning the value appropriately.
6359 */
6360 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6361
6362 qlt_add_target(ha, vha);
2d70c103
NB		 6363}
6364
6365void
6366qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6367{
6368 /*
6369 * FC-4 Feature bit 0 indicates target functionality to the name server.
6370 */
6371 if (qla_tgt_mode_enabled(vha)) {
6372 if (qla_ini_mode_enabled(vha))
6373 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
6374 else
6375 ct_req->req.rff_id.fc4_feature = BIT_0;
6376 } else if (qla_ini_mode_enabled(vha)) {
6377 ct_req->req.rff_id.fc4_feature = BIT_1;
6378 }
6379}
6380
6381/*
6382 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6383 * @ha: HA context
6384 *
6385 * Beginning of ATIO ring has initialization control block already built
6386 * by nvram config routine.
6387 *
6388 * Returns 0 on success.
6389 */
6390void
6391qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6392{
6393 struct qla_hw_data *ha = vha->hw;
6394 uint16_t cnt;
6395 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6396
6397 if (!qla_tgt_mode_enabled(vha))
6398 return;
6399
6400 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6401 pkt->u.raw.signature = ATIO_PROCESSED;
6402 pkt++;
6403 }
6404
6405}
6406
6407/*
6408 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6409 * @ha: SCSI driver HA context
6410 */
6411void
2f424b9b 6412qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6413{
6414 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6415 struct atio_from_isp *pkt;
6416 int cnt, i;
6417
6418 if (!vha->flags.online)
6419 return;
6420
6421 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
6422 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6423 cnt = pkt->u.raw.entry_count;
6424
2f424b9b
QT		 6425 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt,
6426 ha_locked);
2d70c103
NB		 6427
6428 for (i = 0; i < cnt; i++) {
6429 ha->tgt.atio_ring_index++;
6430 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6431 ha->tgt.atio_ring_index = 0;
6432 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6433 } else
6434 ha->tgt.atio_ring_ptr++;
6435
6436 pkt->u.raw.signature = ATIO_PROCESSED;
6437 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6438 }
6439 wmb();
6440 }
6441
6442 /* Adjust ring index */
aa230bc5 6443 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
3761f3e8 6444 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
2d70c103
NB		 6445}
6446
6447void
aa230bc5 6448qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6449{
6450 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 6451 if (!QLA_TGT_MODE_ENABLED())
6452 return;
2d70c103 6453
aa230bc5
AE		 6454 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6455 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6456 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6457
6458 if (IS_ATIO_MSIX_CAPABLE(ha)) {
6459 struct qla_msix_entry *msix = &ha->msix_entries[2];
6460 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6461
6462 icb->msix_atio = cpu_to_le16(msix->entry);
6463 ql_dbg(ql_dbg_init, vha, 0xf072,
6464 "Registering ICB vector 0x%x for atio que.\n",
6465 msix->entry);
2d70c103
NB		 6466 }
6467}
6468
6469void
6470qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6471{
6472 struct qla_hw_data *ha = vha->hw;
6473
6474 if (qla_tgt_mode_enabled(vha)) {
6475 if (!ha->tgt.saved_set) {
6476 /* We save only once */
6477 ha->tgt.saved_exchange_count = nv->exchange_count;
6478 ha->tgt.saved_firmware_options_1 =
6479 nv->firmware_options_1;
6480 ha->tgt.saved_firmware_options_2 =
6481 nv->firmware_options_2;
6482 ha->tgt.saved_firmware_options_3 =
6483 nv->firmware_options_3;
6484 ha->tgt.saved_set = 1;
6485 }
6486
ad950360 6487 nv->exchange_count = cpu_to_le16(0xFFFF);
2d70c103
NB		 6488
6489 /* Enable target mode */
ad950360 6490 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6491
6492 /* Disable ini mode, if requested */
6493 if (!qla_ini_mode_enabled(vha))
ad950360 6494 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6495
6496 /* Disable Full Login after LIP */
ad950360 6497 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6498 /* Enable initial LIP */
ad950360 6499 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6500 if (ql2xtgt_tape_enable)
6501 /* Enable FC Tape support */
6502 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6503 else
6504 /* Disable FC Tape support */
6505 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6506
2d70c103 6507 /* Disable Full Login after LIP */
ad950360 6508 nv->host_p &= cpu_to_le32(~BIT_10);
2d70c103 6509 /* Enable target PRLI control */
ad950360 6510 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6511 } else {
6512 if (ha->tgt.saved_set) {
6513 nv->exchange_count = ha->tgt.saved_exchange_count;
6514 nv->firmware_options_1 =
6515 ha->tgt.saved_firmware_options_1;
6516 nv->firmware_options_2 =
6517 ha->tgt.saved_firmware_options_2;
6518 nv->firmware_options_3 =
6519 ha->tgt.saved_firmware_options_3;
6520 }
6521 return;
6522 }
6523
6524 /* out-of-order frames reassembly */
6525 nv->firmware_options_3 |= BIT_6|BIT_9;
6526
6527 if (ha->tgt.enable_class_2) {
6528 if (vha->flags.init_done)
6529 fc_host_supported_classes(vha->host) =
6530 FC_COS_CLASS2 | FC_COS_CLASS3;
6531
ad950360 6532 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6533 } else {
6534 if (vha->flags.init_done)
6535 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6536
ad950360 6537 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6538 }
6539}
6540
6541void
6542qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6543 struct init_cb_24xx *icb)
6544{
6545 struct qla_hw_data *ha = vha->hw;
6546
6547 if (ha->tgt.node_name_set) {
6548 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6549 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6550 }
6551}
6552
aa230bc5
AE		 6553void
6554qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6555{
6556 struct qla_hw_data *ha = vha->hw;
6557
6558 if (!QLA_TGT_MODE_ENABLED())
6559 return;
6560
6561 if (qla_tgt_mode_enabled(vha)) {
6562 if (!ha->tgt.saved_set) {
6563 /* We save only once */
6564 ha->tgt.saved_exchange_count = nv->exchange_count;
6565 ha->tgt.saved_firmware_options_1 =
6566 nv->firmware_options_1;
6567 ha->tgt.saved_firmware_options_2 =
6568 nv->firmware_options_2;
6569 ha->tgt.saved_firmware_options_3 =
6570 nv->firmware_options_3;
6571 ha->tgt.saved_set = 1;
6572 }
6573
ad950360 6574 nv->exchange_count = cpu_to_le16(0xFFFF);
aa230bc5
AE		 6575
6576 /* Enable target mode */
ad950360 6577 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6578
6579 /* Disable ini mode, if requested */
6580 if (!qla_ini_mode_enabled(vha))
ad950360 6581 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5
AE		 6582
6583 /* Disable Full Login after LIP */
ad950360 6584 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6585 /* Enable initial LIP */
ad950360 6586 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6587 if (ql2xtgt_tape_enable)
6588 /* Enable FC tape support */
6589 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6590 else
6591 /* Disable FC tape support */
6592 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6593
aa230bc5 6594 /* Disable Full Login after LIP */
ad950360 6595 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6596 /* Enable target PRLI control */
ad950360 6597 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6598 } else {
6599 if (ha->tgt.saved_set) {
6600 nv->exchange_count = ha->tgt.saved_exchange_count;
6601 nv->firmware_options_1 =
6602 ha->tgt.saved_firmware_options_1;
6603 nv->firmware_options_2 =
6604 ha->tgt.saved_firmware_options_2;
6605 nv->firmware_options_3 =
6606 ha->tgt.saved_firmware_options_3;
6607 }
6608 return;
6609 }
6610
6611 /* out-of-order frames reassembly */
6612 nv->firmware_options_3 |= BIT_6|BIT_9;
6613
6614 if (ha->tgt.enable_class_2) {
6615 if (vha->flags.init_done)
6616 fc_host_supported_classes(vha->host) =
6617 FC_COS_CLASS2 | FC_COS_CLASS3;
6618
ad950360 6619 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6620 } else {
6621 if (vha->flags.init_done)
6622 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6623
ad950360 6624 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6625 }
6626}
6627
6628void
6629qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6630 struct init_cb_81xx *icb)
6631{
6632 struct qla_hw_data *ha = vha->hw;
6633
6634 if (!QLA_TGT_MODE_ENABLED())
6635 return;
6636
6637 if (ha->tgt.node_name_set) {
6638 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6639 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6640 }
6641}
6642
6643void
6644qlt_83xx_iospace_config(struct qla_hw_data *ha)
6645{
6646 if (!QLA_TGT_MODE_ENABLED())
6647 return;
6648
6649 ha->msix_count += 1; /* For ATIO Q */
6650}
6651
2d70c103
NB		 6652int
6653qlt_24xx_process_response_error(struct scsi_qla_host *vha,
6654 struct sts_entry_24xx *pkt)
6655{
6656 switch (pkt->entry_type) {
6657 case ABTS_RECV_24XX:
6658 case ABTS_RESP_24XX:
6659 case CTIO_TYPE7:
6660 case NOTIFY_ACK_TYPE:
f83adb61 6661 case CTIO_CRC2:
2d70c103
NB		 6662 return 1;
6663 default:
6664 return 0;
6665 }
6666}
6667
6668void
6669qlt_modify_vp_config(struct scsi_qla_host *vha,
6670 struct vp_config_entry_24xx *vpmod)
6671{
6672 if (qla_tgt_mode_enabled(vha))
6673 vpmod->options_idx1 &= ~BIT_5;
6674 /* Disable ini mode, if requested */
6675 if (!qla_ini_mode_enabled(vha))
6676 vpmod->options_idx1 &= ~BIT_4;
6677}
6678
6679void
6680qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6681{
6682 if (!QLA_TGT_MODE_ENABLED())
6683 return;
6684
b20f02e1 6685 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6686 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6687 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6688 } else {
6689 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6690 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6691 }
6692
0e8cd71c
SK		 6693 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6694 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6695 qlt_clear_mode(base_vha);
6696}
6697
aa230bc5
AE		 6698irqreturn_t
6699qla83xx_msix_atio_q(int irq, void *dev_id)
6700{
6701 struct rsp_que *rsp;
6702 scsi_qla_host_t *vha;
6703 struct qla_hw_data *ha;
6704 unsigned long flags;
6705
6706 rsp = (struct rsp_que *) dev_id;
6707 ha = rsp->hw;
6708 vha = pci_get_drvdata(ha->pdev);
6709
2f424b9b 6710 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6711
2f424b9b 6712 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6713
2f424b9b 6714 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6715
6716 return IRQ_HANDLED;
6717}
6718
2f424b9b
QT		 6719static void
6720qlt_handle_abts_recv_work(struct work_struct *work)
6721{
6722 struct qla_tgt_sess_op *op = container_of(work,
6723 struct qla_tgt_sess_op, work);
6724 scsi_qla_host_t *vha = op->vha;
6725 struct qla_hw_data *ha = vha->hw;
6726 unsigned long flags;
6727
6728 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset))
6729 return;
6730
6731 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6732 qlt_24xx_process_atio_queue(vha, 0);
6733 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6734
6735 spin_lock_irqsave(&ha->hardware_lock, flags);
6736 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio);
6737 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6738}
6739
6740void
6741qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
6742{
6743 struct qla_tgt_sess_op *op;
6744
6745 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6746
6747 if (!op) {
6748 /* do not reach for ATIO queue here. This is best effort err
6749 * recovery at this point.
6750 */
6751 qlt_response_pkt_all_vps(vha, pkt);
6752 return;
6753 }
6754
6755 memcpy(&op->atio, pkt, sizeof(*pkt));
6756 op->vha = vha;
6757 op->chip_reset = vha->hw->chip_reset;
6758 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6759 queue_work(qla_tgt_wq, &op->work);
6760 return;
6761}
6762
2d70c103
NB		 6763int
6764qlt_mem_alloc(struct qla_hw_data *ha)
6765{
6766 if (!QLA_TGT_MODE_ENABLED())
6767 return 0;
6768
6769 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6770 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6771 if (!ha->tgt.tgt_vp_map)
6772 return -ENOMEM;
6773
6774 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6775 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6776 &ha->tgt.atio_dma, GFP_KERNEL);
6777 if (!ha->tgt.atio_ring) {
6778 kfree(ha->tgt.tgt_vp_map);
6779 return -ENOMEM;
6780 }
6781 return 0;
6782}
6783
6784void
6785qlt_mem_free(struct qla_hw_data *ha)
6786{
6787 if (!QLA_TGT_MODE_ENABLED())
6788 return;
6789
6790 if (ha->tgt.atio_ring) {
6791 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6792 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6793 ha->tgt.atio_dma);
6794 }
6795 kfree(ha->tgt.tgt_vp_map);
6796}
6797
6798/* vport_slock to be held by the caller */
6799void
6800qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6801{
6802 if (!QLA_TGT_MODE_ENABLED())
6803 return;
6804
6805 switch (cmd) {
6806 case SET_VP_IDX:
6807 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6808 break;
6809 case SET_AL_PA:
6810 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
6811 break;
6812 case RESET_VP_IDX:
6813 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
6814 break;
6815 case RESET_AL_PA:
6816 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
6817 break;
6818 }
6819}
6820
6821static int __init qlt_parse_ini_mode(void)
6822{
6823 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
6824 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
6825 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
6826 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
6827 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
6828 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
6829 else
6830 return false;
6831
6832 return true;
6833}
6834
6835int __init qlt_init(void)
6836{
6837 int ret;
6838
6839 if (!qlt_parse_ini_mode()) {
6840 ql_log(ql_log_fatal, NULL, 0xe06b,
6841 "qlt_parse_ini_mode() failed\n");
6842 return -EINVAL;
6843 }
6844
6845 if (!QLA_TGT_MODE_ENABLED())
6846 return 0;
6847
2d70c103
NB		 6848 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
6849 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
6850 qla_tgt_mgmt_cmd), 0, NULL);
6851 if (!qla_tgt_mgmt_cmd_cachep) {
6852 ql_log(ql_log_fatal, NULL, 0xe06d,
6853 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 6854 return -ENOMEM;
2d70c103
NB		 6855 }
6856
b7bd104e
AP		 6857 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
6858 sizeof(qlt_plogi_ack_t),
6859 __alignof__(qlt_plogi_ack_t),
6860 0, NULL);
6861
6862 if (!qla_tgt_plogi_cachep) {
6863 ql_log(ql_log_fatal, NULL, 0xe06d,
6864 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
6865 ret = -ENOMEM;
6866 goto out_mgmt_cmd_cachep;
6867 }
6868
2d70c103
NB		 6869 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
6870 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
6871 if (!qla_tgt_mgmt_cmd_mempool) {
6872 ql_log(ql_log_fatal, NULL, 0xe06e,
6873 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
6874 ret = -ENOMEM;
b7bd104e 6875 goto out_plogi_cachep;
2d70c103
NB		 6876 }
6877
6878 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
6879 if (!qla_tgt_wq) {
6880 ql_log(ql_log_fatal, NULL, 0xe06f,
6881 "alloc_workqueue for qla_tgt_wq failed\n");
6882 ret = -ENOMEM;
6883 goto out_cmd_mempool;
6884 }
6885 /*
6886 * Return 1 to signal that initiator-mode is being disabled
6887 */
6888 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
6889
6890out_cmd_mempool:
6891 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 6892out_plogi_cachep:
6893 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 6894out_mgmt_cmd_cachep:
6895 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 6896 return ret;
6897}
6898
6899void qlt_exit(void)
6900{
6901 if (!QLA_TGT_MODE_ENABLED())
6902 return;
6903
6904 destroy_workqueue(qla_tgt_wq);
6905 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 6906 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 6907 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 6908}
Linux 6.x block layer and io_uring tree(s)